Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1 | /* |
| 2 | * V4L2 Driver for SuperH Mobile CEU interface |
| 3 | * |
| 4 | * Copyright (C) 2008 Magnus Damm |
| 5 | * |
| 6 | * Based on V4L2 Driver for PXA camera host - "pxa_camera.c", |
| 7 | * |
| 8 | * Copyright (C) 2006, Sascha Hauer, Pengutronix |
| 9 | * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de> |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or modify |
| 12 | * it under the terms of the GNU General Public License as published by |
| 13 | * the Free Software Foundation; either version 2 of the License, or |
| 14 | * (at your option) any later version. |
| 15 | */ |
| 16 | |
| 17 | #include <linux/init.h> |
| 18 | #include <linux/module.h> |
| 19 | #include <linux/io.h> |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 20 | #include <linux/completion.h> |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 21 | #include <linux/delay.h> |
| 22 | #include <linux/dma-mapping.h> |
| 23 | #include <linux/errno.h> |
| 24 | #include <linux/fs.h> |
| 25 | #include <linux/interrupt.h> |
| 26 | #include <linux/kernel.h> |
| 27 | #include <linux/mm.h> |
| 28 | #include <linux/moduleparam.h> |
| 29 | #include <linux/time.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 30 | #include <linux/slab.h> |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 31 | #include <linux/device.h> |
| 32 | #include <linux/platform_device.h> |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 33 | #include <linux/videodev2.h> |
Magnus Damm | 6d1386c | 2009-08-14 10:49:17 +0000 | [diff] [blame] | 34 | #include <linux/pm_runtime.h> |
Guennadi Liakhovetski | f39c1ab | 2009-11-09 16:11:34 -0300 | [diff] [blame] | 35 | #include <linux/sched.h> |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 36 | |
| 37 | #include <media/v4l2-common.h> |
| 38 | #include <media/v4l2-dev.h> |
| 39 | #include <media/soc_camera.h> |
| 40 | #include <media/sh_mobile_ceu.h> |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 41 | #include <media/sh_mobile_csi2.h> |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 42 | #include <media/videobuf2-dma-contig.h> |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 43 | #include <media/v4l2-mediabus.h> |
| 44 | #include <media/soc_mediabus.h> |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 45 | |
| 46 | /* register offsets for sh7722 / sh7723 */ |
| 47 | |
Magnus Damm | dd54203 | 2008-10-16 19:50:22 -0300 | [diff] [blame] | 48 | #define CAPSR 0x00 /* Capture start register */ |
| 49 | #define CAPCR 0x04 /* Capture control register */ |
| 50 | #define CAMCR 0x08 /* Capture interface control register */ |
| 51 | #define CMCYR 0x0c /* Capture interface cycle register */ |
| 52 | #define CAMOR 0x10 /* Capture interface offset register */ |
| 53 | #define CAPWR 0x14 /* Capture interface width register */ |
| 54 | #define CAIFR 0x18 /* Capture interface input format register */ |
| 55 | #define CSTCR 0x20 /* Camera strobe control register (<= sh7722) */ |
| 56 | #define CSECR 0x24 /* Camera strobe emission count register (<= sh7722) */ |
| 57 | #define CRCNTR 0x28 /* CEU register control register */ |
| 58 | #define CRCMPR 0x2c /* CEU register forcible control register */ |
| 59 | #define CFLCR 0x30 /* Capture filter control register */ |
| 60 | #define CFSZR 0x34 /* Capture filter size clip register */ |
| 61 | #define CDWDR 0x38 /* Capture destination width register */ |
| 62 | #define CDAYR 0x3c /* Capture data address Y register */ |
| 63 | #define CDACR 0x40 /* Capture data address C register */ |
| 64 | #define CDBYR 0x44 /* Capture data bottom-field address Y register */ |
| 65 | #define CDBCR 0x48 /* Capture data bottom-field address C register */ |
| 66 | #define CBDSR 0x4c /* Capture bundle destination size register */ |
| 67 | #define CFWCR 0x5c /* Firewall operation control register */ |
| 68 | #define CLFCR 0x60 /* Capture low-pass filter control register */ |
| 69 | #define CDOCR 0x64 /* Capture data output control register */ |
| 70 | #define CDDCR 0x68 /* Capture data complexity level register */ |
| 71 | #define CDDAR 0x6c /* Capture data complexity level address register */ |
| 72 | #define CEIER 0x70 /* Capture event interrupt enable register */ |
| 73 | #define CETCR 0x74 /* Capture event flag clear register */ |
| 74 | #define CSTSR 0x7c /* Capture status register */ |
| 75 | #define CSRTR 0x80 /* Capture software reset register */ |
| 76 | #define CDSSR 0x84 /* Capture data size register */ |
| 77 | #define CDAYR2 0x90 /* Capture data address Y register 2 */ |
| 78 | #define CDACR2 0x94 /* Capture data address C register 2 */ |
| 79 | #define CDBYR2 0x98 /* Capture data bottom-field address Y register 2 */ |
| 80 | #define CDBCR2 0x9c /* Capture data bottom-field address C register 2 */ |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 81 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 82 | #undef DEBUG_GEOMETRY |
| 83 | #ifdef DEBUG_GEOMETRY |
| 84 | #define dev_geo dev_info |
| 85 | #else |
| 86 | #define dev_geo dev_dbg |
| 87 | #endif |
| 88 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 89 | /* per video frame buffer */ |
| 90 | struct sh_mobile_ceu_buffer { |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 91 | struct vb2_buffer vb; /* v4l buffer must be first */ |
| 92 | struct list_head queue; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 93 | }; |
| 94 | |
| 95 | struct sh_mobile_ceu_dev { |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 96 | struct soc_camera_host ici; |
| 97 | struct soc_camera_device *icd; |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 98 | struct platform_device *csi2_pdev; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 99 | |
| 100 | unsigned int irq; |
| 101 | void __iomem *base; |
Guennadi Liakhovetski | b5518a4 | 2011-11-03 10:11:11 -0300 | [diff] [blame] | 102 | size_t video_limit; |
| 103 | size_t buf_total; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 104 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 105 | spinlock_t lock; /* Protects video buffer lists */ |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 106 | struct list_head capture; |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 107 | struct vb2_buffer *active; |
| 108 | struct vb2_alloc_ctx *alloc_ctx; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 109 | |
| 110 | struct sh_mobile_ceu_info *pdata; |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 111 | struct completion complete; |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 112 | |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 113 | u32 cflcr; |
| 114 | |
Guennadi Liakhovetski | 48e971c | 2012-03-14 08:37:03 -0300 | [diff] [blame] | 115 | /* static max sizes either from platform data or default */ |
| 116 | int max_width; |
| 117 | int max_height; |
| 118 | |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 119 | enum v4l2_field field; |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 120 | int sequence; |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 121 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 122 | unsigned int image_mode:1; |
| 123 | unsigned int is_16bit:1; |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 124 | unsigned int frozen:1; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 125 | }; |
| 126 | |
| 127 | struct sh_mobile_ceu_cam { |
Guennadi Liakhovetski | eec5ce0 | 2011-07-22 07:43:15 -0300 | [diff] [blame] | 128 | /* CEU offsets within the camera output, before the CEU scaler */ |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 129 | unsigned int ceu_left; |
| 130 | unsigned int ceu_top; |
| 131 | /* Client output, as seen by the CEU */ |
| 132 | unsigned int width; |
| 133 | unsigned int height; |
| 134 | /* |
| 135 | * User window from S_CROP / G_CROP, produced by client cropping and |
| 136 | * scaling, CEU scaling and CEU cropping, mapped back onto the client |
| 137 | * input window |
| 138 | */ |
| 139 | struct v4l2_rect subrect; |
| 140 | /* Camera cropping rectangle */ |
| 141 | struct v4l2_rect rect; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 142 | const struct soc_mbus_pixelfmt *extra_fmt; |
| 143 | enum v4l2_mbus_pixelcode code; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 144 | }; |
| 145 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 146 | static struct sh_mobile_ceu_buffer *to_ceu_vb(struct vb2_buffer *vb) |
| 147 | { |
| 148 | return container_of(vb, struct sh_mobile_ceu_buffer, vb); |
| 149 | } |
| 150 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 151 | static void ceu_write(struct sh_mobile_ceu_dev *priv, |
Magnus Damm | 7a1a816 | 2008-12-18 12:50:30 -0300 | [diff] [blame] | 152 | unsigned long reg_offs, u32 data) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 153 | { |
| 154 | iowrite32(data, priv->base + reg_offs); |
| 155 | } |
| 156 | |
Magnus Damm | 7a1a816 | 2008-12-18 12:50:30 -0300 | [diff] [blame] | 157 | static u32 ceu_read(struct sh_mobile_ceu_dev *priv, unsigned long reg_offs) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 158 | { |
| 159 | return ioread32(priv->base + reg_offs); |
| 160 | } |
| 161 | |
Kuninori Morimoto | b1de7ae | 2009-10-05 12:48:20 -0300 | [diff] [blame] | 162 | static int sh_mobile_ceu_soft_reset(struct sh_mobile_ceu_dev *pcdev) |
| 163 | { |
| 164 | int i, success = 0; |
| 165 | struct soc_camera_device *icd = pcdev->icd; |
| 166 | |
| 167 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset */ |
| 168 | |
| 169 | /* wait CSTSR.CPTON bit */ |
| 170 | for (i = 0; i < 1000; i++) { |
| 171 | if (!(ceu_read(pcdev, CSTSR) & 1)) { |
| 172 | success++; |
| 173 | break; |
| 174 | } |
| 175 | udelay(1); |
| 176 | } |
| 177 | |
| 178 | /* wait CAPSR.CPKIL bit */ |
| 179 | for (i = 0; i < 1000; i++) { |
| 180 | if (!(ceu_read(pcdev, CAPSR) & (1 << 16))) { |
| 181 | success++; |
| 182 | break; |
| 183 | } |
| 184 | udelay(1); |
| 185 | } |
| 186 | |
| 187 | |
| 188 | if (2 != success) { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 189 | dev_warn(icd->pdev, "soft reset time out\n"); |
Kuninori Morimoto | b1de7ae | 2009-10-05 12:48:20 -0300 | [diff] [blame] | 190 | return -EIO; |
| 191 | } |
| 192 | |
| 193 | return 0; |
| 194 | } |
| 195 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 196 | /* |
| 197 | * Videobuf operations |
| 198 | */ |
Guennadi Liakhovetski | b5518a4 | 2011-11-03 10:11:11 -0300 | [diff] [blame] | 199 | |
| 200 | /* |
| 201 | * .queue_setup() is called to check, whether the driver can accept the |
| 202 | * requested number of buffers and to fill in plane sizes |
| 203 | * for the current frame format if required |
| 204 | */ |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 205 | static int sh_mobile_ceu_videobuf_setup(struct vb2_queue *vq, |
Guennadi Liakhovetski | fc714e7 | 2011-08-24 10:30:21 -0300 | [diff] [blame] | 206 | const struct v4l2_format *fmt, |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 207 | unsigned int *count, unsigned int *num_planes, |
Marek Szyprowski | 035aa14 | 2011-08-24 06:43:36 -0300 | [diff] [blame] | 208 | unsigned int sizes[], void *alloc_ctxs[]) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 209 | { |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 210 | struct soc_camera_device *icd = container_of(vq, struct soc_camera_device, vb2_vidq); |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 211 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 212 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 213 | |
Guennadi Liakhovetski | b5518a4 | 2011-11-03 10:11:11 -0300 | [diff] [blame] | 214 | if (fmt) { |
| 215 | const struct soc_camera_format_xlate *xlate = soc_camera_xlate_by_fourcc(icd, |
| 216 | fmt->fmt.pix.pixelformat); |
Laurent Pinchart | bed8d80 | 2012-03-21 08:03:26 -0300 | [diff] [blame] | 217 | unsigned int bytes_per_line; |
| 218 | int ret; |
Laurent Pinchart | 2b61d46e | 2012-03-21 08:03:21 -0300 | [diff] [blame] | 219 | |
Guennadi Liakhovetski | b5518a4 | 2011-11-03 10:11:11 -0300 | [diff] [blame] | 220 | if (!xlate) |
| 221 | return -EINVAL; |
Laurent Pinchart | 2b61d46e | 2012-03-21 08:03:21 -0300 | [diff] [blame] | 222 | |
Laurent Pinchart | bed8d80 | 2012-03-21 08:03:26 -0300 | [diff] [blame] | 223 | ret = soc_mbus_bytes_per_line(fmt->fmt.pix.width, |
| 224 | xlate->host_fmt); |
| 225 | if (ret < 0) |
| 226 | return ret; |
Laurent Pinchart | 2b61d46e | 2012-03-21 08:03:21 -0300 | [diff] [blame] | 227 | |
Laurent Pinchart | bed8d80 | 2012-03-21 08:03:26 -0300 | [diff] [blame] | 228 | bytes_per_line = max_t(u32, fmt->fmt.pix.bytesperline, ret); |
| 229 | |
| 230 | ret = soc_mbus_image_size(xlate->host_fmt, bytes_per_line, |
| 231 | fmt->fmt.pix.height); |
| 232 | if (ret < 0) |
| 233 | return ret; |
| 234 | |
| 235 | sizes[0] = max_t(u32, fmt->fmt.pix.sizeimage, ret); |
Guennadi Liakhovetski | b5518a4 | 2011-11-03 10:11:11 -0300 | [diff] [blame] | 236 | } else { |
| 237 | /* Called from VIDIOC_REQBUFS or in compatibility mode */ |
Laurent Pinchart | 2b61d46e | 2012-03-21 08:03:21 -0300 | [diff] [blame] | 238 | sizes[0] = icd->sizeimage; |
Guennadi Liakhovetski | b5518a4 | 2011-11-03 10:11:11 -0300 | [diff] [blame] | 239 | } |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 240 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 241 | alloc_ctxs[0] = pcdev->alloc_ctx; |
| 242 | |
Guennadi Liakhovetski | b5518a4 | 2011-11-03 10:11:11 -0300 | [diff] [blame] | 243 | if (!vq->num_buffers) |
| 244 | pcdev->sequence = 0; |
| 245 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 246 | if (!*count) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 247 | *count = 2; |
| 248 | |
Guennadi Liakhovetski | b5518a4 | 2011-11-03 10:11:11 -0300 | [diff] [blame] | 249 | /* If *num_planes != 0, we have already verified *count. */ |
| 250 | if (pcdev->video_limit && !*num_planes) { |
| 251 | size_t size = PAGE_ALIGN(sizes[0]) * *count; |
| 252 | |
| 253 | if (size + pcdev->buf_total > pcdev->video_limit) |
| 254 | *count = (pcdev->video_limit - pcdev->buf_total) / |
| 255 | PAGE_ALIGN(sizes[0]); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 256 | } |
| 257 | |
Guennadi Liakhovetski | b5518a4 | 2011-11-03 10:11:11 -0300 | [diff] [blame] | 258 | *num_planes = 1; |
| 259 | |
Marek Szyprowski | 035aa14 | 2011-08-24 06:43:36 -0300 | [diff] [blame] | 260 | dev_dbg(icd->parent, "count=%d, size=%u\n", *count, sizes[0]); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 261 | |
| 262 | return 0; |
| 263 | } |
| 264 | |
Magnus Damm | 7a1a816 | 2008-12-18 12:50:30 -0300 | [diff] [blame] | 265 | #define CEU_CETCR_MAGIC 0x0317f313 /* acknowledge magical interrupt sources */ |
| 266 | #define CEU_CETCR_IGRW (1 << 4) /* prohibited register access interrupt bit */ |
| 267 | #define CEU_CEIER_CPEIE (1 << 0) /* one-frame capture end interrupt */ |
Kuninori Morimoto | 5cf93f1 | 2009-10-05 12:48:59 -0300 | [diff] [blame] | 268 | #define CEU_CEIER_VBP (1 << 20) /* vbp error */ |
Magnus Damm | 7a1a816 | 2008-12-18 12:50:30 -0300 | [diff] [blame] | 269 | #define CEU_CAPCR_CTNCP (1 << 16) /* continuous capture mode (if set) */ |
Kuninori Morimoto | 5cf93f1 | 2009-10-05 12:48:59 -0300 | [diff] [blame] | 270 | #define CEU_CEIER_MASK (CEU_CEIER_CPEIE | CEU_CEIER_VBP) |
Magnus Damm | 7a1a816 | 2008-12-18 12:50:30 -0300 | [diff] [blame] | 271 | |
| 272 | |
Kuninori Morimoto | 5cf93f1 | 2009-10-05 12:48:59 -0300 | [diff] [blame] | 273 | /* |
| 274 | * return value doesn't reflex the success/failure to queue the new buffer, |
| 275 | * but rather the status of the previous buffer. |
| 276 | */ |
| 277 | static int sh_mobile_ceu_capture(struct sh_mobile_ceu_dev *pcdev) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 278 | { |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 279 | struct soc_camera_device *icd = pcdev->icd; |
Kuninori Morimoto | ccab8a2 | 2008-12-18 12:51:21 -0300 | [diff] [blame] | 280 | dma_addr_t phys_addr_top, phys_addr_bottom; |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 281 | unsigned long top1, top2; |
| 282 | unsigned long bottom1, bottom2; |
Kuninori Morimoto | 5cf93f1 | 2009-10-05 12:48:59 -0300 | [diff] [blame] | 283 | u32 status; |
Guennadi Liakhovetski | 15f517e | 2011-07-26 11:03:37 -0300 | [diff] [blame] | 284 | bool planar; |
Kuninori Morimoto | 5cf93f1 | 2009-10-05 12:48:59 -0300 | [diff] [blame] | 285 | int ret = 0; |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 286 | |
Guennadi Liakhovetski | 5d28d52 | 2009-12-11 11:15:05 -0300 | [diff] [blame] | 287 | /* |
| 288 | * The hardware is _very_ picky about this sequence. Especially |
Magnus Damm | 7a1a816 | 2008-12-18 12:50:30 -0300 | [diff] [blame] | 289 | * the CEU_CETCR_MAGIC value. It seems like we need to acknowledge |
| 290 | * several not-so-well documented interrupt sources in CETCR. |
| 291 | */ |
Kuninori Morimoto | 5cf93f1 | 2009-10-05 12:48:59 -0300 | [diff] [blame] | 292 | ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) & ~CEU_CEIER_MASK); |
| 293 | status = ceu_read(pcdev, CETCR); |
| 294 | ceu_write(pcdev, CETCR, ~status & CEU_CETCR_MAGIC); |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 295 | if (!pcdev->frozen) |
| 296 | ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) | CEU_CEIER_MASK); |
Magnus Damm | 7a1a816 | 2008-12-18 12:50:30 -0300 | [diff] [blame] | 297 | ceu_write(pcdev, CAPCR, ceu_read(pcdev, CAPCR) & ~CEU_CAPCR_CTNCP); |
| 298 | ceu_write(pcdev, CETCR, CEU_CETCR_MAGIC ^ CEU_CETCR_IGRW); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 299 | |
Kuninori Morimoto | 5cf93f1 | 2009-10-05 12:48:59 -0300 | [diff] [blame] | 300 | /* |
| 301 | * When a VBP interrupt occurs, a capture end interrupt does not occur |
| 302 | * and the image of that frame is not captured correctly. So, soft reset |
| 303 | * is needed here. |
| 304 | */ |
| 305 | if (status & CEU_CEIER_VBP) { |
| 306 | sh_mobile_ceu_soft_reset(pcdev); |
| 307 | ret = -EIO; |
| 308 | } |
| 309 | |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 310 | if (pcdev->frozen) { |
| 311 | complete(&pcdev->complete); |
| 312 | return ret; |
| 313 | } |
| 314 | |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 315 | if (!pcdev->active) |
Kuninori Morimoto | 5cf93f1 | 2009-10-05 12:48:59 -0300 | [diff] [blame] | 316 | return ret; |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 317 | |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 318 | if (V4L2_FIELD_INTERLACED_BT == pcdev->field) { |
| 319 | top1 = CDBYR; |
| 320 | top2 = CDBCR; |
| 321 | bottom1 = CDAYR; |
| 322 | bottom2 = CDACR; |
| 323 | } else { |
| 324 | top1 = CDAYR; |
| 325 | top2 = CDACR; |
| 326 | bottom1 = CDBYR; |
| 327 | bottom2 = CDBCR; |
| 328 | } |
| 329 | |
Marek Szyprowski | ba7fcb0 | 2011-08-29 03:20:56 -0300 | [diff] [blame] | 330 | phys_addr_top = vb2_dma_contig_plane_dma_addr(pcdev->active, 0); |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 331 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 332 | switch (icd->current_fmt->host_fmt->fourcc) { |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 333 | case V4L2_PIX_FMT_NV12: |
| 334 | case V4L2_PIX_FMT_NV21: |
Magnus Damm | 9e4a56d | 2008-12-18 12:45:33 -0300 | [diff] [blame] | 335 | case V4L2_PIX_FMT_NV16: |
| 336 | case V4L2_PIX_FMT_NV61: |
Guennadi Liakhovetski | 15f517e | 2011-07-26 11:03:37 -0300 | [diff] [blame] | 337 | planar = true; |
| 338 | break; |
| 339 | default: |
| 340 | planar = false; |
| 341 | } |
| 342 | |
| 343 | ceu_write(pcdev, top1, phys_addr_top); |
| 344 | if (V4L2_FIELD_NONE != pcdev->field) { |
Laurent Pinchart | fc13baf | 2012-03-21 08:16:05 -0300 | [diff] [blame^] | 345 | phys_addr_bottom = phys_addr_top + icd->bytesperline; |
Guennadi Liakhovetski | 15f517e | 2011-07-26 11:03:37 -0300 | [diff] [blame] | 346 | ceu_write(pcdev, bottom1, phys_addr_bottom); |
| 347 | } |
| 348 | |
| 349 | if (planar) { |
Laurent Pinchart | fc13baf | 2012-03-21 08:16:05 -0300 | [diff] [blame^] | 350 | phys_addr_top += icd->bytesperline * icd->user_height; |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 351 | ceu_write(pcdev, top2, phys_addr_top); |
| 352 | if (V4L2_FIELD_NONE != pcdev->field) { |
Laurent Pinchart | fc13baf | 2012-03-21 08:16:05 -0300 | [diff] [blame^] | 353 | phys_addr_bottom = phys_addr_top + icd->bytesperline; |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 354 | ceu_write(pcdev, bottom2, phys_addr_bottom); |
Kuninori Morimoto | ccab8a2 | 2008-12-18 12:51:21 -0300 | [diff] [blame] | 355 | } |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 356 | } |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 357 | |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 358 | ceu_write(pcdev, CAPSR, 0x1); /* start capture */ |
Kuninori Morimoto | 5cf93f1 | 2009-10-05 12:48:59 -0300 | [diff] [blame] | 359 | |
| 360 | return ret; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 361 | } |
| 362 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 363 | static int sh_mobile_ceu_videobuf_prepare(struct vb2_buffer *vb) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 364 | { |
Guennadi Liakhovetski | b5518a4 | 2011-11-03 10:11:11 -0300 | [diff] [blame] | 365 | struct sh_mobile_ceu_buffer *buf = to_ceu_vb(vb); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 366 | |
| 367 | /* Added list head initialization on alloc */ |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 368 | WARN(!list_empty(&buf->queue), "Buffer %p on queue!\n", vb); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 369 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 370 | return 0; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 371 | } |
| 372 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 373 | static void sh_mobile_ceu_videobuf_queue(struct vb2_buffer *vb) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 374 | { |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 375 | struct soc_camera_device *icd = container_of(vb->vb2_queue, struct soc_camera_device, vb2_vidq); |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 376 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 377 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 378 | struct sh_mobile_ceu_buffer *buf = to_ceu_vb(vb); |
Guennadi Liakhovetski | b5518a4 | 2011-11-03 10:11:11 -0300 | [diff] [blame] | 379 | unsigned long size; |
Guennadi Liakhovetski | b5518a4 | 2011-11-03 10:11:11 -0300 | [diff] [blame] | 380 | |
Laurent Pinchart | 2b61d46e | 2012-03-21 08:03:21 -0300 | [diff] [blame] | 381 | size = icd->sizeimage; |
Guennadi Liakhovetski | b5518a4 | 2011-11-03 10:11:11 -0300 | [diff] [blame] | 382 | |
| 383 | if (vb2_plane_size(vb, 0) < size) { |
| 384 | dev_err(icd->parent, "Buffer #%d too small (%lu < %lu)\n", |
| 385 | vb->v4l2_buf.index, vb2_plane_size(vb, 0), size); |
| 386 | goto error; |
| 387 | } |
| 388 | |
| 389 | vb2_set_plane_payload(vb, 0, size); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 390 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 391 | dev_dbg(icd->parent, "%s (vb=0x%p) 0x%p %lu\n", __func__, |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 392 | vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0)); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 393 | |
Guennadi Liakhovetski | b5518a4 | 2011-11-03 10:11:11 -0300 | [diff] [blame] | 394 | #ifdef DEBUG |
| 395 | /* |
| 396 | * This can be useful if you want to see if we actually fill |
| 397 | * the buffer with something |
| 398 | */ |
| 399 | if (vb2_plane_vaddr(vb, 0)) |
| 400 | memset(vb2_plane_vaddr(vb, 0), 0xaa, vb2_get_plane_payload(vb, 0)); |
| 401 | #endif |
| 402 | |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 403 | spin_lock_irq(&pcdev->lock); |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 404 | list_add_tail(&buf->queue, &pcdev->capture); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 405 | |
| 406 | if (!pcdev->active) { |
Kuninori Morimoto | 5cf93f1 | 2009-10-05 12:48:59 -0300 | [diff] [blame] | 407 | /* |
| 408 | * Because there were no active buffer at this moment, |
| 409 | * we are not interested in the return value of |
| 410 | * sh_mobile_ceu_capture here. |
| 411 | */ |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 412 | pcdev->active = vb; |
| 413 | sh_mobile_ceu_capture(pcdev); |
| 414 | } |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 415 | spin_unlock_irq(&pcdev->lock); |
Guennadi Liakhovetski | b5518a4 | 2011-11-03 10:11:11 -0300 | [diff] [blame] | 416 | |
| 417 | return; |
| 418 | |
| 419 | error: |
| 420 | vb2_buffer_done(vb, VB2_BUF_STATE_ERROR); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 421 | } |
| 422 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 423 | static void sh_mobile_ceu_videobuf_release(struct vb2_buffer *vb) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 424 | { |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 425 | struct soc_camera_device *icd = container_of(vb->vb2_queue, struct soc_camera_device, vb2_vidq); |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 426 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 427 | struct sh_mobile_ceu_buffer *buf = to_ceu_vb(vb); |
Guennadi Liakhovetski | cca0e549 | 2009-08-25 11:46:51 -0300 | [diff] [blame] | 428 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Guennadi Liakhovetski | cca0e549 | 2009-08-25 11:46:51 -0300 | [diff] [blame] | 429 | |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 430 | spin_lock_irq(&pcdev->lock); |
Guennadi Liakhovetski | cca0e549 | 2009-08-25 11:46:51 -0300 | [diff] [blame] | 431 | |
| 432 | if (pcdev->active == vb) { |
| 433 | /* disable capture (release DMA buffer), reset */ |
| 434 | ceu_write(pcdev, CAPSR, 1 << 16); |
| 435 | pcdev->active = NULL; |
| 436 | } |
| 437 | |
Guennadi Liakhovetski | cb74cf5 | 2011-07-04 12:15:14 -0300 | [diff] [blame] | 438 | /* |
| 439 | * Doesn't hurt also if the list is empty, but it hurts, if queuing the |
| 440 | * buffer failed, and .buf_init() hasn't been called |
| 441 | */ |
| 442 | if (buf->queue.next) |
| 443 | list_del_init(&buf->queue); |
Guennadi Liakhovetski | cca0e549 | 2009-08-25 11:46:51 -0300 | [diff] [blame] | 444 | |
Guennadi Liakhovetski | b5518a4 | 2011-11-03 10:11:11 -0300 | [diff] [blame] | 445 | pcdev->buf_total -= PAGE_ALIGN(vb2_plane_size(vb, 0)); |
| 446 | dev_dbg(icd->parent, "%s() %zu bytes buffers\n", __func__, |
| 447 | pcdev->buf_total); |
| 448 | |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 449 | spin_unlock_irq(&pcdev->lock); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 450 | } |
| 451 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 452 | static int sh_mobile_ceu_videobuf_init(struct vb2_buffer *vb) |
| 453 | { |
Guennadi Liakhovetski | b5518a4 | 2011-11-03 10:11:11 -0300 | [diff] [blame] | 454 | struct soc_camera_device *icd = container_of(vb->vb2_queue, struct soc_camera_device, vb2_vidq); |
| 455 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| 456 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
| 457 | |
| 458 | pcdev->buf_total += PAGE_ALIGN(vb2_plane_size(vb, 0)); |
| 459 | dev_dbg(icd->parent, "%s() %zu bytes buffers\n", __func__, |
| 460 | pcdev->buf_total); |
| 461 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 462 | /* This is for locking debugging only */ |
| 463 | INIT_LIST_HEAD(&to_ceu_vb(vb)->queue); |
| 464 | return 0; |
| 465 | } |
| 466 | |
Guennadi Liakhovetski | 066f786 | 2011-03-24 12:51:07 -0300 | [diff] [blame] | 467 | static int sh_mobile_ceu_stop_streaming(struct vb2_queue *q) |
| 468 | { |
| 469 | struct soc_camera_device *icd = container_of(q, struct soc_camera_device, vb2_vidq); |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 470 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | 066f786 | 2011-03-24 12:51:07 -0300 | [diff] [blame] | 471 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
| 472 | struct list_head *buf_head, *tmp; |
Guennadi Liakhovetski | 066f786 | 2011-03-24 12:51:07 -0300 | [diff] [blame] | 473 | |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 474 | spin_lock_irq(&pcdev->lock); |
Guennadi Liakhovetski | 066f786 | 2011-03-24 12:51:07 -0300 | [diff] [blame] | 475 | |
| 476 | pcdev->active = NULL; |
| 477 | |
| 478 | list_for_each_safe(buf_head, tmp, &pcdev->capture) |
| 479 | list_del_init(buf_head); |
| 480 | |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 481 | spin_unlock_irq(&pcdev->lock); |
Guennadi Liakhovetski | 066f786 | 2011-03-24 12:51:07 -0300 | [diff] [blame] | 482 | |
| 483 | return sh_mobile_ceu_soft_reset(pcdev); |
| 484 | } |
| 485 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 486 | static struct vb2_ops sh_mobile_ceu_videobuf_ops = { |
| 487 | .queue_setup = sh_mobile_ceu_videobuf_setup, |
| 488 | .buf_prepare = sh_mobile_ceu_videobuf_prepare, |
| 489 | .buf_queue = sh_mobile_ceu_videobuf_queue, |
| 490 | .buf_cleanup = sh_mobile_ceu_videobuf_release, |
| 491 | .buf_init = sh_mobile_ceu_videobuf_init, |
| 492 | .wait_prepare = soc_camera_unlock, |
| 493 | .wait_finish = soc_camera_lock, |
Guennadi Liakhovetski | 066f786 | 2011-03-24 12:51:07 -0300 | [diff] [blame] | 494 | .stop_streaming = sh_mobile_ceu_stop_streaming, |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 495 | }; |
| 496 | |
| 497 | static irqreturn_t sh_mobile_ceu_irq(int irq, void *data) |
| 498 | { |
| 499 | struct sh_mobile_ceu_dev *pcdev = data; |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 500 | struct vb2_buffer *vb; |
| 501 | int ret; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 502 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 503 | spin_lock(&pcdev->lock); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 504 | |
| 505 | vb = pcdev->active; |
Guennadi Liakhovetski | cca0e549 | 2009-08-25 11:46:51 -0300 | [diff] [blame] | 506 | if (!vb) |
| 507 | /* Stale interrupt from a released buffer */ |
| 508 | goto out; |
| 509 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 510 | list_del_init(&to_ceu_vb(vb)->queue); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 511 | |
| 512 | if (!list_empty(&pcdev->capture)) |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 513 | pcdev->active = &list_entry(pcdev->capture.next, |
| 514 | struct sh_mobile_ceu_buffer, queue)->vb; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 515 | else |
| 516 | pcdev->active = NULL; |
| 517 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 518 | ret = sh_mobile_ceu_capture(pcdev); |
| 519 | do_gettimeofday(&vb->v4l2_buf.timestamp); |
| 520 | if (!ret) { |
| 521 | vb->v4l2_buf.field = pcdev->field; |
| 522 | vb->v4l2_buf.sequence = pcdev->sequence++; |
| 523 | } |
| 524 | vb2_buffer_done(vb, ret < 0 ? VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE); |
Guennadi Liakhovetski | cca0e549 | 2009-08-25 11:46:51 -0300 | [diff] [blame] | 525 | |
| 526 | out: |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 527 | spin_unlock(&pcdev->lock); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 528 | |
| 529 | return IRQ_HANDLED; |
| 530 | } |
| 531 | |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 532 | static struct v4l2_subdev *find_csi2(struct sh_mobile_ceu_dev *pcdev) |
| 533 | { |
| 534 | struct v4l2_subdev *sd; |
| 535 | |
| 536 | if (!pcdev->csi2_pdev) |
| 537 | return NULL; |
| 538 | |
| 539 | v4l2_device_for_each_subdev(sd, &pcdev->ici.v4l2_dev) |
| 540 | if (&pcdev->csi2_pdev->dev == v4l2_get_subdevdata(sd)) |
| 541 | return sd; |
| 542 | |
| 543 | return NULL; |
| 544 | } |
| 545 | |
Guennadi Liakhovetski | 1c3bb74 | 2008-12-18 12:28:54 -0300 | [diff] [blame] | 546 | /* Called with .video_lock held */ |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 547 | static int sh_mobile_ceu_add_device(struct soc_camera_device *icd) |
| 548 | { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 549 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 550 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 551 | struct v4l2_subdev *csi2_sd; |
Guennadi Liakhovetski | 6ed7c03 | 2009-12-11 11:15:06 -0300 | [diff] [blame] | 552 | int ret; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 553 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 554 | if (pcdev->icd) |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 555 | return -EBUSY; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 556 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 557 | dev_info(icd->parent, |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 558 | "SuperH Mobile CEU driver attached to camera %d\n", |
| 559 | icd->devnum); |
| 560 | |
Guennadi Liakhovetski | a79aebf | 2009-09-25 13:36:51 +0900 | [diff] [blame] | 561 | pm_runtime_get_sync(ici->v4l2_dev.dev); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 562 | |
Guennadi Liakhovetski | b5518a4 | 2011-11-03 10:11:11 -0300 | [diff] [blame] | 563 | pcdev->buf_total = 0; |
| 564 | |
Guennadi Liakhovetski | 6ed7c03 | 2009-12-11 11:15:06 -0300 | [diff] [blame] | 565 | ret = sh_mobile_ceu_soft_reset(pcdev); |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 566 | |
| 567 | csi2_sd = find_csi2(pcdev); |
Guennadi Liakhovetski | 4c0b036 | 2011-12-05 16:01:13 -0300 | [diff] [blame] | 568 | if (csi2_sd) { |
| 569 | csi2_sd->grp_id = soc_camera_grp_id(icd); |
| 570 | v4l2_set_subdev_hostdata(csi2_sd, icd); |
| 571 | } |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 572 | |
| 573 | ret = v4l2_subdev_call(csi2_sd, core, s_power, 1); |
Guennadi Liakhovetski | 489759c | 2011-09-07 11:59:47 -0300 | [diff] [blame] | 574 | if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV) { |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 575 | pm_runtime_put_sync(ici->v4l2_dev.dev); |
Guennadi Liakhovetski | 489759c | 2011-09-07 11:59:47 -0300 | [diff] [blame] | 576 | return ret; |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 577 | } |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 578 | |
Guennadi Liakhovetski | 489759c | 2011-09-07 11:59:47 -0300 | [diff] [blame] | 579 | /* |
| 580 | * -ENODEV is special: either csi2_sd == NULL or the CSI-2 driver |
| 581 | * has not found this soc-camera device among its clients |
| 582 | */ |
| 583 | if (ret == -ENODEV && csi2_sd) |
| 584 | csi2_sd->grp_id = 0; |
| 585 | pcdev->icd = icd; |
| 586 | |
| 587 | return 0; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 588 | } |
| 589 | |
Guennadi Liakhovetski | 1c3bb74 | 2008-12-18 12:28:54 -0300 | [diff] [blame] | 590 | /* Called with .video_lock held */ |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 591 | static void sh_mobile_ceu_remove_device(struct soc_camera_device *icd) |
| 592 | { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 593 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 594 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 595 | struct v4l2_subdev *csi2_sd = find_csi2(pcdev); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 596 | |
| 597 | BUG_ON(icd != pcdev->icd); |
| 598 | |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 599 | v4l2_subdev_call(csi2_sd, core, s_power, 0); |
Guennadi Liakhovetski | 489759c | 2011-09-07 11:59:47 -0300 | [diff] [blame] | 600 | if (csi2_sd) |
| 601 | csi2_sd->grp_id = 0; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 602 | /* disable capture, disable interrupts */ |
| 603 | ceu_write(pcdev, CEIER, 0); |
Kuninori Morimoto | b1de7ae | 2009-10-05 12:48:20 -0300 | [diff] [blame] | 604 | sh_mobile_ceu_soft_reset(pcdev); |
Magnus Damm | 51354cc | 2008-10-16 19:51:20 -0300 | [diff] [blame] | 605 | |
| 606 | /* make sure active buffer is canceled */ |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 607 | spin_lock_irq(&pcdev->lock); |
Magnus Damm | 51354cc | 2008-10-16 19:51:20 -0300 | [diff] [blame] | 608 | if (pcdev->active) { |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 609 | list_del_init(&to_ceu_vb(pcdev->active)->queue); |
| 610 | vb2_buffer_done(pcdev->active, VB2_BUF_STATE_ERROR); |
Magnus Damm | 51354cc | 2008-10-16 19:51:20 -0300 | [diff] [blame] | 611 | pcdev->active = NULL; |
| 612 | } |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 613 | spin_unlock_irq(&pcdev->lock); |
Magnus Damm | 51354cc | 2008-10-16 19:51:20 -0300 | [diff] [blame] | 614 | |
Guennadi Liakhovetski | a79aebf | 2009-09-25 13:36:51 +0900 | [diff] [blame] | 615 | pm_runtime_put_sync(ici->v4l2_dev.dev); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 616 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 617 | dev_info(icd->parent, |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 618 | "SuperH Mobile CEU driver detached from camera %d\n", |
| 619 | icd->devnum); |
| 620 | |
| 621 | pcdev->icd = NULL; |
| 622 | } |
| 623 | |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 624 | /* |
| 625 | * See chapter 29.4.12 "Capture Filter Control Register (CFLCR)" |
| 626 | * in SH7722 Hardware Manual |
| 627 | */ |
| 628 | static unsigned int size_dst(unsigned int src, unsigned int scale) |
| 629 | { |
| 630 | unsigned int mant_pre = scale >> 12; |
| 631 | if (!src || !scale) |
| 632 | return src; |
| 633 | return ((mant_pre + 2 * (src - 1)) / (2 * mant_pre) - 1) * |
| 634 | mant_pre * 4096 / scale + 1; |
| 635 | } |
| 636 | |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 637 | static u16 calc_scale(unsigned int src, unsigned int *dst) |
| 638 | { |
| 639 | u16 scale; |
| 640 | |
| 641 | if (src == *dst) |
| 642 | return 0; |
| 643 | |
| 644 | scale = (src * 4096 / *dst) & ~7; |
| 645 | |
| 646 | while (scale > 4096 && size_dst(src, scale) < *dst) |
| 647 | scale -= 8; |
| 648 | |
| 649 | *dst = size_dst(src, scale); |
| 650 | |
| 651 | return scale; |
| 652 | } |
| 653 | |
| 654 | /* rect is guaranteed to not exceed the scaled camera rectangle */ |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 655 | static void sh_mobile_ceu_set_rect(struct soc_camera_device *icd) |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 656 | { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 657 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 658 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
| 659 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 660 | unsigned int height, width, cdwdr_width, in_width, in_height; |
| 661 | unsigned int left_offset, top_offset; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 662 | u32 camor; |
| 663 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 664 | dev_geo(icd->parent, "Crop %ux%u@%u:%u\n", |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 665 | icd->user_width, icd->user_height, cam->ceu_left, cam->ceu_top); |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 666 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 667 | left_offset = cam->ceu_left; |
| 668 | top_offset = cam->ceu_top; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 669 | |
Guennadi Liakhovetski | eec5ce0 | 2011-07-22 07:43:15 -0300 | [diff] [blame] | 670 | WARN_ON(icd->user_width & 3 || icd->user_height & 3); |
| 671 | |
| 672 | width = icd->user_width; |
| 673 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 674 | if (pcdev->image_mode) { |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 675 | in_width = cam->width; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 676 | if (!pcdev->is_16bit) { |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 677 | in_width *= 2; |
| 678 | left_offset *= 2; |
| 679 | } |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 680 | } else { |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 681 | unsigned int w_factor; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 682 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 683 | switch (icd->current_fmt->host_fmt->packing) { |
| 684 | case SOC_MBUS_PACKING_2X8_PADHI: |
| 685 | w_factor = 2; |
| 686 | break; |
| 687 | default: |
| 688 | w_factor = 1; |
| 689 | } |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 690 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 691 | in_width = cam->width * w_factor; |
Guennadi Liakhovetski | eec5ce0 | 2011-07-22 07:43:15 -0300 | [diff] [blame] | 692 | left_offset *= w_factor; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 693 | } |
| 694 | |
Laurent Pinchart | fc13baf | 2012-03-21 08:16:05 -0300 | [diff] [blame^] | 695 | cdwdr_width = icd->bytesperline; |
| 696 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 697 | height = icd->user_height; |
| 698 | in_height = cam->height; |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 699 | if (V4L2_FIELD_NONE != pcdev->field) { |
Guennadi Liakhovetski | eec5ce0 | 2011-07-22 07:43:15 -0300 | [diff] [blame] | 700 | height = (height / 2) & ~3; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 701 | in_height /= 2; |
| 702 | top_offset /= 2; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 703 | cdwdr_width *= 2; |
| 704 | } |
| 705 | |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 706 | /* CSI2 special configuration */ |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 707 | if (pcdev->pdata->csi2) { |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 708 | in_width = ((in_width - 2) * 2); |
| 709 | left_offset *= 2; |
| 710 | } |
| 711 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 712 | /* Set CAMOR, CAPWR, CFSZR, take care of CDWDR */ |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 713 | camor = left_offset | (top_offset << 16); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 714 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 715 | dev_geo(icd->parent, |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 716 | "CAMOR 0x%x, CAPWR 0x%x, CFSZR 0x%x, CDWDR 0x%x\n", camor, |
| 717 | (in_height << 16) | in_width, (height << 16) | width, |
| 718 | cdwdr_width); |
| 719 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 720 | ceu_write(pcdev, CAMOR, camor); |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 721 | ceu_write(pcdev, CAPWR, (in_height << 16) | in_width); |
Guennadi Liakhovetski | eec5ce0 | 2011-07-22 07:43:15 -0300 | [diff] [blame] | 722 | /* CFSZR clipping is applied _after_ the scaling filter (CFLCR) */ |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 723 | ceu_write(pcdev, CFSZR, (height << 16) | width); |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 724 | ceu_write(pcdev, CDWDR, cdwdr_width); |
| 725 | } |
| 726 | |
| 727 | static u32 capture_save_reset(struct sh_mobile_ceu_dev *pcdev) |
| 728 | { |
| 729 | u32 capsr = ceu_read(pcdev, CAPSR); |
| 730 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset, stop capture */ |
| 731 | return capsr; |
| 732 | } |
| 733 | |
| 734 | static void capture_restore(struct sh_mobile_ceu_dev *pcdev, u32 capsr) |
| 735 | { |
| 736 | unsigned long timeout = jiffies + 10 * HZ; |
| 737 | |
| 738 | /* |
| 739 | * Wait until the end of the current frame. It can take a long time, |
| 740 | * but if it has been aborted by a CAPSR reset, it shoule exit sooner. |
| 741 | */ |
| 742 | while ((ceu_read(pcdev, CSTSR) & 1) && time_before(jiffies, timeout)) |
| 743 | msleep(1); |
| 744 | |
| 745 | if (time_after(jiffies, timeout)) { |
| 746 | dev_err(pcdev->ici.v4l2_dev.dev, |
| 747 | "Timeout waiting for frame end! Interface problem?\n"); |
| 748 | return; |
| 749 | } |
| 750 | |
| 751 | /* Wait until reset clears, this shall not hang... */ |
| 752 | while (ceu_read(pcdev, CAPSR) & (1 << 16)) |
| 753 | udelay(10); |
| 754 | |
| 755 | /* Anything to restore? */ |
| 756 | if (capsr & ~(1 << 16)) |
| 757 | ceu_write(pcdev, CAPSR, capsr); |
| 758 | } |
| 759 | |
Guennadi Liakhovetski | e1db704 | 2011-07-27 18:17:56 -0300 | [diff] [blame] | 760 | /* Find the bus subdevice driver, e.g., CSI2 */ |
| 761 | static struct v4l2_subdev *find_bus_subdev(struct sh_mobile_ceu_dev *pcdev, |
| 762 | struct soc_camera_device *icd) |
| 763 | { |
Guennadi Liakhovetski | 6ac939c | 2011-08-22 12:35:09 -0300 | [diff] [blame] | 764 | if (pcdev->csi2_pdev) { |
| 765 | struct v4l2_subdev *csi2_sd = find_csi2(pcdev); |
Guennadi Liakhovetski | 4c0b036 | 2011-12-05 16:01:13 -0300 | [diff] [blame] | 766 | if (csi2_sd && csi2_sd->grp_id == soc_camera_grp_id(icd)) |
Guennadi Liakhovetski | 6ac939c | 2011-08-22 12:35:09 -0300 | [diff] [blame] | 767 | return csi2_sd; |
| 768 | } |
Guennadi Liakhovetski | e1db704 | 2011-07-27 18:17:56 -0300 | [diff] [blame] | 769 | |
Guennadi Liakhovetski | 6ac939c | 2011-08-22 12:35:09 -0300 | [diff] [blame] | 770 | return soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | e1db704 | 2011-07-27 18:17:56 -0300 | [diff] [blame] | 771 | } |
| 772 | |
| 773 | #define CEU_BUS_FLAGS (V4L2_MBUS_MASTER | \ |
| 774 | V4L2_MBUS_PCLK_SAMPLE_RISING | \ |
| 775 | V4L2_MBUS_HSYNC_ACTIVE_HIGH | \ |
| 776 | V4L2_MBUS_HSYNC_ACTIVE_LOW | \ |
| 777 | V4L2_MBUS_VSYNC_ACTIVE_HIGH | \ |
| 778 | V4L2_MBUS_VSYNC_ACTIVE_LOW | \ |
| 779 | V4L2_MBUS_DATA_ACTIVE_HIGH) |
| 780 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 781 | /* Capture is not running, no interrupts, no locking needed */ |
Guennadi Liakhovetski | 8843d11 | 2011-09-21 17:52:51 -0300 | [diff] [blame] | 782 | static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 783 | { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 784 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 785 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Guennadi Liakhovetski | e1db704 | 2011-07-27 18:17:56 -0300 | [diff] [blame] | 786 | struct v4l2_subdev *sd = find_bus_subdev(pcdev, icd); |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 787 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
Guennadi Liakhovetski | e1db704 | 2011-07-27 18:17:56 -0300 | [diff] [blame] | 788 | struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,}; |
| 789 | unsigned long value, common_flags = CEU_BUS_FLAGS; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 790 | u32 capsr = capture_save_reset(pcdev); |
Guennadi Liakhovetski | e1db704 | 2011-07-27 18:17:56 -0300 | [diff] [blame] | 791 | unsigned int yuv_lineskip; |
| 792 | int ret; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 793 | |
Guennadi Liakhovetski | e1db704 | 2011-07-27 18:17:56 -0300 | [diff] [blame] | 794 | /* |
| 795 | * If the client doesn't implement g_mbus_config, we just use our |
| 796 | * platform data |
| 797 | */ |
| 798 | ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg); |
| 799 | if (!ret) { |
| 800 | common_flags = soc_mbus_config_compatible(&cfg, |
| 801 | common_flags); |
| 802 | if (!common_flags) |
| 803 | return -EINVAL; |
| 804 | } else if (ret != -ENOIOCTLCMD) { |
| 805 | return ret; |
| 806 | } |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 807 | |
Kuninori Morimoto | 85dc1cf | 2009-12-11 11:53:54 -0300 | [diff] [blame] | 808 | /* Make choises, based on platform preferences */ |
Guennadi Liakhovetski | e1db704 | 2011-07-27 18:17:56 -0300 | [diff] [blame] | 809 | if ((common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) && |
| 810 | (common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)) { |
Kuninori Morimoto | 85dc1cf | 2009-12-11 11:53:54 -0300 | [diff] [blame] | 811 | if (pcdev->pdata->flags & SH_CEU_FLAG_HSYNC_LOW) |
Guennadi Liakhovetski | e1db704 | 2011-07-27 18:17:56 -0300 | [diff] [blame] | 812 | common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_HIGH; |
Kuninori Morimoto | 85dc1cf | 2009-12-11 11:53:54 -0300 | [diff] [blame] | 813 | else |
Guennadi Liakhovetski | e1db704 | 2011-07-27 18:17:56 -0300 | [diff] [blame] | 814 | common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_LOW; |
Kuninori Morimoto | 85dc1cf | 2009-12-11 11:53:54 -0300 | [diff] [blame] | 815 | } |
| 816 | |
Guennadi Liakhovetski | e1db704 | 2011-07-27 18:17:56 -0300 | [diff] [blame] | 817 | if ((common_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) && |
| 818 | (common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)) { |
Kuninori Morimoto | 85dc1cf | 2009-12-11 11:53:54 -0300 | [diff] [blame] | 819 | if (pcdev->pdata->flags & SH_CEU_FLAG_VSYNC_LOW) |
Guennadi Liakhovetski | e1db704 | 2011-07-27 18:17:56 -0300 | [diff] [blame] | 820 | common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_HIGH; |
Kuninori Morimoto | 85dc1cf | 2009-12-11 11:53:54 -0300 | [diff] [blame] | 821 | else |
Guennadi Liakhovetski | e1db704 | 2011-07-27 18:17:56 -0300 | [diff] [blame] | 822 | common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_LOW; |
Kuninori Morimoto | 85dc1cf | 2009-12-11 11:53:54 -0300 | [diff] [blame] | 823 | } |
| 824 | |
Guennadi Liakhovetski | e1db704 | 2011-07-27 18:17:56 -0300 | [diff] [blame] | 825 | cfg.flags = common_flags; |
| 826 | ret = v4l2_subdev_call(sd, video, s_mbus_config, &cfg); |
| 827 | if (ret < 0 && ret != -ENOIOCTLCMD) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 828 | return ret; |
| 829 | |
Guennadi Liakhovetski | e1db704 | 2011-07-27 18:17:56 -0300 | [diff] [blame] | 830 | if (icd->current_fmt->host_fmt->bits_per_sample > 8) |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 831 | pcdev->is_16bit = 1; |
Guennadi Liakhovetski | e1db704 | 2011-07-27 18:17:56 -0300 | [diff] [blame] | 832 | else |
| 833 | pcdev->is_16bit = 0; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 834 | |
| 835 | ceu_write(pcdev, CRCNTR, 0); |
| 836 | ceu_write(pcdev, CRCMPR, 0); |
| 837 | |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 838 | value = 0x00000010; /* data fetch by default */ |
Guennadi Liakhovetski | e1db704 | 2011-07-27 18:17:56 -0300 | [diff] [blame] | 839 | yuv_lineskip = 0x10; |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 840 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 841 | switch (icd->current_fmt->host_fmt->fourcc) { |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 842 | case V4L2_PIX_FMT_NV12: |
| 843 | case V4L2_PIX_FMT_NV21: |
Guennadi Liakhovetski | e1db704 | 2011-07-27 18:17:56 -0300 | [diff] [blame] | 844 | /* convert 4:2:2 -> 4:2:0 */ |
| 845 | yuv_lineskip = 0; /* skip for NV12/21, no skip for NV16/61 */ |
Magnus Damm | 9e4a56d | 2008-12-18 12:45:33 -0300 | [diff] [blame] | 846 | /* fall-through */ |
| 847 | case V4L2_PIX_FMT_NV16: |
| 848 | case V4L2_PIX_FMT_NV61: |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 849 | switch (cam->code) { |
Guennadi Liakhovetski | ace6e97 | 2010-07-22 16:52:51 -0300 | [diff] [blame] | 850 | case V4L2_MBUS_FMT_UYVY8_2X8: |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 851 | value = 0x00000000; /* Cb0, Y0, Cr0, Y1 */ |
| 852 | break; |
Guennadi Liakhovetski | ace6e97 | 2010-07-22 16:52:51 -0300 | [diff] [blame] | 853 | case V4L2_MBUS_FMT_VYUY8_2X8: |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 854 | value = 0x00000100; /* Cr0, Y0, Cb0, Y1 */ |
| 855 | break; |
Guennadi Liakhovetski | ace6e97 | 2010-07-22 16:52:51 -0300 | [diff] [blame] | 856 | case V4L2_MBUS_FMT_YUYV8_2X8: |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 857 | value = 0x00000200; /* Y0, Cb0, Y1, Cr0 */ |
| 858 | break; |
Guennadi Liakhovetski | ace6e97 | 2010-07-22 16:52:51 -0300 | [diff] [blame] | 859 | case V4L2_MBUS_FMT_YVYU8_2X8: |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 860 | value = 0x00000300; /* Y0, Cr0, Y1, Cb0 */ |
| 861 | break; |
| 862 | default: |
| 863 | BUG(); |
| 864 | } |
| 865 | } |
| 866 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 867 | if (icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_NV21 || |
| 868 | icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_NV61) |
Magnus Damm | 9e4a56d | 2008-12-18 12:45:33 -0300 | [diff] [blame] | 869 | value ^= 0x00000100; /* swap U, V to change from NV1x->NVx1 */ |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 870 | |
Guennadi Liakhovetski | e1db704 | 2011-07-27 18:17:56 -0300 | [diff] [blame] | 871 | value |= common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW ? 1 << 1 : 0; |
| 872 | value |= common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW ? 1 << 0 : 0; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 873 | value |= pcdev->is_16bit ? 1 << 12 : 0; |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 874 | |
| 875 | /* CSI2 mode */ |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 876 | if (pcdev->pdata->csi2) |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 877 | value |= 3 << 12; |
| 878 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 879 | ceu_write(pcdev, CAMCR, value); |
| 880 | |
| 881 | ceu_write(pcdev, CAPCR, 0x00300000); |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 882 | |
| 883 | switch (pcdev->field) { |
| 884 | case V4L2_FIELD_INTERLACED_TB: |
| 885 | value = 0x101; |
| 886 | break; |
| 887 | case V4L2_FIELD_INTERLACED_BT: |
| 888 | value = 0x102; |
| 889 | break; |
| 890 | default: |
| 891 | value = 0; |
| 892 | break; |
| 893 | } |
| 894 | ceu_write(pcdev, CAIFR, value); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 895 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 896 | sh_mobile_ceu_set_rect(icd); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 897 | mdelay(1); |
| 898 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 899 | dev_geo(icd->parent, "CFLCR 0x%x\n", pcdev->cflcr); |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 900 | ceu_write(pcdev, CFLCR, pcdev->cflcr); |
Magnus Damm | dd54203 | 2008-10-16 19:50:22 -0300 | [diff] [blame] | 901 | |
Guennadi Liakhovetski | 5d28d52 | 2009-12-11 11:15:05 -0300 | [diff] [blame] | 902 | /* |
| 903 | * A few words about byte order (observed in Big Endian mode) |
Magnus Damm | dd54203 | 2008-10-16 19:50:22 -0300 | [diff] [blame] | 904 | * |
| 905 | * In data fetch mode bytes are received in chunks of 8 bytes. |
| 906 | * D0, D1, D2, D3, D4, D5, D6, D7 (D0 received first) |
| 907 | * |
| 908 | * The data is however by default written to memory in reverse order: |
| 909 | * D7, D6, D5, D4, D3, D2, D1, D0 (D7 written to lowest byte) |
| 910 | * |
| 911 | * The lowest three bits of CDOCR allows us to do swapping, |
Magnus Damm | 2c0a072 | 2008-10-16 19:50:56 -0300 | [diff] [blame] | 912 | * using 7 we swap the data bytes to match the incoming order: |
| 913 | * D0, D1, D2, D3, D4, D5, D6, D7 |
Magnus Damm | dd54203 | 2008-10-16 19:50:22 -0300 | [diff] [blame] | 914 | */ |
Guennadi Liakhovetski | e1db704 | 2011-07-27 18:17:56 -0300 | [diff] [blame] | 915 | value = 0x00000007 | yuv_lineskip; |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 916 | |
| 917 | ceu_write(pcdev, CDOCR, value); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 918 | ceu_write(pcdev, CFWCR, 0); /* keep "datafetch firewall" disabled */ |
| 919 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 920 | capture_restore(pcdev, capsr); |
| 921 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 922 | /* not in bundle mode: skip CBDSR, CDAYR2, CDACR2, CDBYR2, CDBCR2 */ |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 923 | return 0; |
| 924 | } |
| 925 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 926 | static int sh_mobile_ceu_try_bus_param(struct soc_camera_device *icd, |
| 927 | unsigned char buswidth) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 928 | { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 929 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 930 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Guennadi Liakhovetski | e1db704 | 2011-07-27 18:17:56 -0300 | [diff] [blame] | 931 | struct v4l2_subdev *sd = find_bus_subdev(pcdev, icd); |
| 932 | unsigned long common_flags = CEU_BUS_FLAGS; |
| 933 | struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,}; |
| 934 | int ret; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 935 | |
Guennadi Liakhovetski | e1db704 | 2011-07-27 18:17:56 -0300 | [diff] [blame] | 936 | ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg); |
| 937 | if (!ret) |
| 938 | common_flags = soc_mbus_config_compatible(&cfg, |
| 939 | common_flags); |
| 940 | else if (ret != -ENOIOCTLCMD) |
| 941 | return ret; |
| 942 | |
| 943 | if (!common_flags || buswidth > 16) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 944 | return -EINVAL; |
| 945 | |
| 946 | return 0; |
| 947 | } |
| 948 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 949 | static const struct soc_mbus_pixelfmt sh_mobile_ceu_formats[] = { |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 950 | { |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 951 | .fourcc = V4L2_PIX_FMT_NV12, |
| 952 | .name = "NV12", |
Guennadi Liakhovetski | e1db704 | 2011-07-27 18:17:56 -0300 | [diff] [blame] | 953 | .bits_per_sample = 8, |
| 954 | .packing = SOC_MBUS_PACKING_1_5X8, |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 955 | .order = SOC_MBUS_ORDER_LE, |
Laurent Pinchart | ad3b81f | 2012-03-21 08:03:23 -0300 | [diff] [blame] | 956 | .layout = SOC_MBUS_LAYOUT_PLANAR_2Y_C, |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 957 | }, { |
| 958 | .fourcc = V4L2_PIX_FMT_NV21, |
| 959 | .name = "NV21", |
Guennadi Liakhovetski | e1db704 | 2011-07-27 18:17:56 -0300 | [diff] [blame] | 960 | .bits_per_sample = 8, |
| 961 | .packing = SOC_MBUS_PACKING_1_5X8, |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 962 | .order = SOC_MBUS_ORDER_LE, |
Laurent Pinchart | ad3b81f | 2012-03-21 08:03:23 -0300 | [diff] [blame] | 963 | .layout = SOC_MBUS_LAYOUT_PLANAR_2Y_C, |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 964 | }, { |
| 965 | .fourcc = V4L2_PIX_FMT_NV16, |
| 966 | .name = "NV16", |
Guennadi Liakhovetski | e1db704 | 2011-07-27 18:17:56 -0300 | [diff] [blame] | 967 | .bits_per_sample = 8, |
| 968 | .packing = SOC_MBUS_PACKING_2X8_PADHI, |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 969 | .order = SOC_MBUS_ORDER_LE, |
Laurent Pinchart | ad3b81f | 2012-03-21 08:03:23 -0300 | [diff] [blame] | 970 | .layout = SOC_MBUS_LAYOUT_PLANAR_Y_C, |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 971 | }, { |
| 972 | .fourcc = V4L2_PIX_FMT_NV61, |
| 973 | .name = "NV61", |
Guennadi Liakhovetski | e1db704 | 2011-07-27 18:17:56 -0300 | [diff] [blame] | 974 | .bits_per_sample = 8, |
| 975 | .packing = SOC_MBUS_PACKING_2X8_PADHI, |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 976 | .order = SOC_MBUS_ORDER_LE, |
Laurent Pinchart | ad3b81f | 2012-03-21 08:03:23 -0300 | [diff] [blame] | 977 | .layout = SOC_MBUS_LAYOUT_PLANAR_Y_C, |
Magnus Damm | 9e4a56d | 2008-12-18 12:45:33 -0300 | [diff] [blame] | 978 | }, |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 979 | }; |
| 980 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 981 | /* This will be corrected as we get more formats */ |
| 982 | static bool sh_mobile_ceu_packing_supported(const struct soc_mbus_pixelfmt *fmt) |
| 983 | { |
| 984 | return fmt->packing == SOC_MBUS_PACKING_NONE || |
| 985 | (fmt->bits_per_sample == 8 && |
Guennadi Liakhovetski | e1db704 | 2011-07-27 18:17:56 -0300 | [diff] [blame] | 986 | fmt->packing == SOC_MBUS_PACKING_1_5X8) || |
| 987 | (fmt->bits_per_sample == 8 && |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 988 | fmt->packing == SOC_MBUS_PACKING_2X8_PADHI) || |
| 989 | (fmt->bits_per_sample > 8 && |
| 990 | fmt->packing == SOC_MBUS_PACKING_EXTEND16); |
| 991 | } |
| 992 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 993 | static int client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect); |
| 994 | |
Hans Verkuil | d34bfcd2 | 2011-09-05 17:07:47 -0300 | [diff] [blame] | 995 | static struct soc_camera_device *ctrl_to_icd(struct v4l2_ctrl *ctrl) |
| 996 | { |
| 997 | return container_of(ctrl->handler, struct soc_camera_device, |
| 998 | ctrl_handler); |
| 999 | } |
| 1000 | |
| 1001 | static int sh_mobile_ceu_s_ctrl(struct v4l2_ctrl *ctrl) |
| 1002 | { |
| 1003 | struct soc_camera_device *icd = ctrl_to_icd(ctrl); |
| 1004 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| 1005 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
| 1006 | |
| 1007 | switch (ctrl->id) { |
| 1008 | case V4L2_CID_SHARPNESS: |
| 1009 | switch (icd->current_fmt->host_fmt->fourcc) { |
| 1010 | case V4L2_PIX_FMT_NV12: |
| 1011 | case V4L2_PIX_FMT_NV21: |
| 1012 | case V4L2_PIX_FMT_NV16: |
| 1013 | case V4L2_PIX_FMT_NV61: |
| 1014 | ceu_write(pcdev, CLFCR, !ctrl->val); |
| 1015 | return 0; |
| 1016 | } |
| 1017 | break; |
| 1018 | } |
| 1019 | |
| 1020 | return -EINVAL; |
| 1021 | } |
| 1022 | |
| 1023 | static const struct v4l2_ctrl_ops sh_mobile_ceu_ctrl_ops = { |
| 1024 | .s_ctrl = sh_mobile_ceu_s_ctrl, |
| 1025 | }; |
| 1026 | |
Hans Verkuil | 3805f20 | 2010-05-08 17:55:00 -0300 | [diff] [blame] | 1027 | static int sh_mobile_ceu_get_formats(struct soc_camera_device *icd, unsigned int idx, |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1028 | struct soc_camera_format_xlate *xlate) |
| 1029 | { |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1030 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1031 | struct device *dev = icd->parent; |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 1032 | struct soc_camera_host *ici = to_soc_camera_host(dev); |
| 1033 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 1034 | int ret, k, n; |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1035 | int formats = 0; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1036 | struct sh_mobile_ceu_cam *cam; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1037 | enum v4l2_mbus_pixelcode code; |
| 1038 | const struct soc_mbus_pixelfmt *fmt; |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1039 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1040 | ret = v4l2_subdev_call(sd, video, enum_mbus_fmt, idx, &code); |
| 1041 | if (ret < 0) |
| 1042 | /* No more formats */ |
| 1043 | return 0; |
| 1044 | |
| 1045 | fmt = soc_mbus_get_fmtdesc(code); |
| 1046 | if (!fmt) { |
Guennadi Liakhovetski | d2dcad4 | 2011-05-18 06:49:54 -0300 | [diff] [blame] | 1047 | dev_warn(dev, "unsupported format code #%u: %d\n", idx, code); |
| 1048 | return 0; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1049 | } |
| 1050 | |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 1051 | if (!pcdev->pdata->csi2) { |
Guennadi Liakhovetski | e1db704 | 2011-07-27 18:17:56 -0300 | [diff] [blame] | 1052 | /* Are there any restrictions in the CSI-2 case? */ |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 1053 | ret = sh_mobile_ceu_try_bus_param(icd, fmt->bits_per_sample); |
| 1054 | if (ret < 0) |
| 1055 | return 0; |
| 1056 | } |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1057 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1058 | if (!icd->host_priv) { |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1059 | struct v4l2_mbus_framefmt mf; |
| 1060 | struct v4l2_rect rect; |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1061 | int shift = 0; |
| 1062 | |
Hans Verkuil | d34bfcd2 | 2011-09-05 17:07:47 -0300 | [diff] [blame] | 1063 | /* Add our control */ |
| 1064 | v4l2_ctrl_new_std(&icd->ctrl_handler, &sh_mobile_ceu_ctrl_ops, |
| 1065 | V4L2_CID_SHARPNESS, 0, 1, 1, 0); |
| 1066 | if (icd->ctrl_handler.error) |
| 1067 | return icd->ctrl_handler.error; |
| 1068 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1069 | /* FIXME: subwindow is lost between close / open */ |
| 1070 | |
| 1071 | /* Cache current client geometry */ |
| 1072 | ret = client_g_rect(sd, &rect); |
| 1073 | if (ret < 0) |
| 1074 | return ret; |
| 1075 | |
| 1076 | /* First time */ |
| 1077 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); |
| 1078 | if (ret < 0) |
| 1079 | return ret; |
| 1080 | |
Guennadi Liakhovetski | 48e971c | 2012-03-14 08:37:03 -0300 | [diff] [blame] | 1081 | /* |
| 1082 | * All currently existing CEU implementations support 2560x1920 |
| 1083 | * or larger frames. If the sensor is proposing too big a frame, |
| 1084 | * don't bother with possibly supportred by the CEU larger |
| 1085 | * sizes, just try VGA multiples. If needed, this can be |
| 1086 | * adjusted in the future. |
| 1087 | */ |
| 1088 | while ((mf.width > pcdev->max_width || |
| 1089 | mf.height > pcdev->max_height) && shift < 4) { |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1090 | /* Try 2560x1920, 1280x960, 640x480, 320x240 */ |
| 1091 | mf.width = 2560 >> shift; |
| 1092 | mf.height = 1920 >> shift; |
Guennadi Liakhovetski | 4c0b036 | 2011-12-05 16:01:13 -0300 | [diff] [blame] | 1093 | ret = v4l2_device_call_until_err(sd->v4l2_dev, |
| 1094 | soc_camera_grp_id(icd), video, |
| 1095 | s_mbus_fmt, &mf); |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1096 | if (ret < 0) |
| 1097 | return ret; |
| 1098 | shift++; |
| 1099 | } |
| 1100 | |
| 1101 | if (shift == 4) { |
| 1102 | dev_err(dev, "Failed to configure the client below %ux%x\n", |
| 1103 | mf.width, mf.height); |
| 1104 | return -EIO; |
| 1105 | } |
| 1106 | |
| 1107 | dev_geo(dev, "camera fmt %ux%u\n", mf.width, mf.height); |
| 1108 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1109 | cam = kzalloc(sizeof(*cam), GFP_KERNEL); |
| 1110 | if (!cam) |
| 1111 | return -ENOMEM; |
| 1112 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1113 | /* We are called with current camera crop, initialise subrect with it */ |
| 1114 | cam->rect = rect; |
| 1115 | cam->subrect = rect; |
| 1116 | |
| 1117 | cam->width = mf.width; |
| 1118 | cam->height = mf.height; |
| 1119 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1120 | icd->host_priv = cam; |
| 1121 | } else { |
| 1122 | cam = icd->host_priv; |
| 1123 | } |
| 1124 | |
Guennadi Liakhovetski | c8329ac | 2009-02-23 12:12:58 -0300 | [diff] [blame] | 1125 | /* Beginning of a pass */ |
| 1126 | if (!idx) |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1127 | cam->extra_fmt = NULL; |
Guennadi Liakhovetski | c8329ac | 2009-02-23 12:12:58 -0300 | [diff] [blame] | 1128 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1129 | switch (code) { |
Guennadi Liakhovetski | ace6e97 | 2010-07-22 16:52:51 -0300 | [diff] [blame] | 1130 | case V4L2_MBUS_FMT_UYVY8_2X8: |
| 1131 | case V4L2_MBUS_FMT_VYUY8_2X8: |
| 1132 | case V4L2_MBUS_FMT_YUYV8_2X8: |
| 1133 | case V4L2_MBUS_FMT_YVYU8_2X8: |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1134 | if (cam->extra_fmt) |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1135 | break; |
Guennadi Liakhovetski | c8329ac | 2009-02-23 12:12:58 -0300 | [diff] [blame] | 1136 | |
| 1137 | /* |
| 1138 | * Our case is simple so far: for any of the above four camera |
| 1139 | * formats we add all our four synthesized NV* formats, so, |
| 1140 | * just marking the device with a single flag suffices. If |
| 1141 | * the format generation rules are more complex, you would have |
| 1142 | * to actually hang your already added / counted formats onto |
| 1143 | * the host_priv pointer and check whether the format you're |
| 1144 | * going to add now is already there. |
| 1145 | */ |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1146 | cam->extra_fmt = sh_mobile_ceu_formats; |
Guennadi Liakhovetski | c8329ac | 2009-02-23 12:12:58 -0300 | [diff] [blame] | 1147 | |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 1148 | n = ARRAY_SIZE(sh_mobile_ceu_formats); |
| 1149 | formats += n; |
| 1150 | for (k = 0; xlate && k < n; k++) { |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1151 | xlate->host_fmt = &sh_mobile_ceu_formats[k]; |
| 1152 | xlate->code = code; |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 1153 | xlate++; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1154 | dev_dbg(dev, "Providing format %s using code %d\n", |
| 1155 | sh_mobile_ceu_formats[k].name, code); |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 1156 | } |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1157 | break; |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1158 | default: |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1159 | if (!sh_mobile_ceu_packing_supported(fmt)) |
| 1160 | return 0; |
| 1161 | } |
| 1162 | |
| 1163 | /* Generic pass-through */ |
| 1164 | formats++; |
| 1165 | if (xlate) { |
| 1166 | xlate->host_fmt = fmt; |
| 1167 | xlate->code = code; |
| 1168 | xlate++; |
| 1169 | dev_dbg(dev, "Providing format %s in pass-through mode\n", |
Guennadi Liakhovetski | e53a480 | 2010-06-18 04:20:56 -0300 | [diff] [blame] | 1170 | fmt->name); |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1171 | } |
| 1172 | |
| 1173 | return formats; |
| 1174 | } |
| 1175 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1176 | static void sh_mobile_ceu_put_formats(struct soc_camera_device *icd) |
| 1177 | { |
| 1178 | kfree(icd->host_priv); |
| 1179 | icd->host_priv = NULL; |
| 1180 | } |
| 1181 | |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1182 | /* Check if any dimension of r1 is smaller than respective one of r2 */ |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1183 | static bool is_smaller(struct v4l2_rect *r1, struct v4l2_rect *r2) |
| 1184 | { |
| 1185 | return r1->width < r2->width || r1->height < r2->height; |
| 1186 | } |
| 1187 | |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1188 | /* Check if r1 fails to cover r2 */ |
| 1189 | static bool is_inside(struct v4l2_rect *r1, struct v4l2_rect *r2) |
| 1190 | { |
| 1191 | return r1->left > r2->left || r1->top > r2->top || |
| 1192 | r1->left + r1->width < r2->left + r2->width || |
| 1193 | r1->top + r1->height < r2->top + r2->height; |
| 1194 | } |
| 1195 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1196 | static unsigned int scale_down(unsigned int size, unsigned int scale) |
| 1197 | { |
| 1198 | return (size * 4096 + scale / 2) / scale; |
| 1199 | } |
| 1200 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1201 | static unsigned int calc_generic_scale(unsigned int input, unsigned int output) |
| 1202 | { |
| 1203 | return (input * 4096 + output / 2) / output; |
| 1204 | } |
| 1205 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1206 | /* Get and store current client crop */ |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1207 | static int client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect) |
| 1208 | { |
| 1209 | struct v4l2_crop crop; |
| 1210 | struct v4l2_cropcap cap; |
| 1211 | int ret; |
| 1212 | |
| 1213 | crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 1214 | |
| 1215 | ret = v4l2_subdev_call(sd, video, g_crop, &crop); |
| 1216 | if (!ret) { |
| 1217 | *rect = crop.c; |
| 1218 | return ret; |
| 1219 | } |
| 1220 | |
| 1221 | /* Camera driver doesn't support .g_crop(), assume default rectangle */ |
| 1222 | cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 1223 | |
| 1224 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1225 | if (!ret) |
| 1226 | *rect = cap.defrect; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1227 | |
| 1228 | return ret; |
| 1229 | } |
| 1230 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1231 | /* Client crop has changed, update our sub-rectangle to remain within the area */ |
| 1232 | static void update_subrect(struct sh_mobile_ceu_cam *cam) |
| 1233 | { |
| 1234 | struct v4l2_rect *rect = &cam->rect, *subrect = &cam->subrect; |
| 1235 | |
| 1236 | if (rect->width < subrect->width) |
| 1237 | subrect->width = rect->width; |
| 1238 | |
| 1239 | if (rect->height < subrect->height) |
| 1240 | subrect->height = rect->height; |
| 1241 | |
| 1242 | if (rect->left > subrect->left) |
| 1243 | subrect->left = rect->left; |
| 1244 | else if (rect->left + rect->width > |
| 1245 | subrect->left + subrect->width) |
| 1246 | subrect->left = rect->left + rect->width - |
| 1247 | subrect->width; |
| 1248 | |
| 1249 | if (rect->top > subrect->top) |
| 1250 | subrect->top = rect->top; |
| 1251 | else if (rect->top + rect->height > |
| 1252 | subrect->top + subrect->height) |
| 1253 | subrect->top = rect->top + rect->height - |
| 1254 | subrect->height; |
| 1255 | } |
| 1256 | |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1257 | /* |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1258 | * The common for both scaling and cropping iterative approach is: |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1259 | * 1. try if the client can produce exactly what requested by the user |
| 1260 | * 2. if (1) failed, try to double the client image until we get one big enough |
| 1261 | * 3. if (2) failed, try to request the maximum image |
| 1262 | */ |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1263 | static int client_s_crop(struct soc_camera_device *icd, struct v4l2_crop *crop, |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1264 | struct v4l2_crop *cam_crop) |
| 1265 | { |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1266 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1267 | struct v4l2_rect *rect = &crop->c, *cam_rect = &cam_crop->c; |
| 1268 | struct device *dev = sd->v4l2_dev->dev; |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1269 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1270 | struct v4l2_cropcap cap; |
| 1271 | int ret; |
| 1272 | unsigned int width, height; |
| 1273 | |
| 1274 | v4l2_subdev_call(sd, video, s_crop, crop); |
| 1275 | ret = client_g_rect(sd, cam_rect); |
| 1276 | if (ret < 0) |
| 1277 | return ret; |
| 1278 | |
| 1279 | /* |
| 1280 | * Now cam_crop contains the current camera input rectangle, and it must |
| 1281 | * be within camera cropcap bounds |
| 1282 | */ |
| 1283 | if (!memcmp(rect, cam_rect, sizeof(*rect))) { |
| 1284 | /* Even if camera S_CROP failed, but camera rectangle matches */ |
Márton Németh | e26b314 | 2010-02-24 17:13:29 -0300 | [diff] [blame] | 1285 | dev_dbg(dev, "Camera S_CROP successful for %dx%d@%d:%d\n", |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1286 | rect->width, rect->height, rect->left, rect->top); |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1287 | cam->rect = *cam_rect; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1288 | return 0; |
| 1289 | } |
| 1290 | |
| 1291 | /* Try to fix cropping, that camera hasn't managed to set */ |
Márton Németh | e26b314 | 2010-02-24 17:13:29 -0300 | [diff] [blame] | 1292 | dev_geo(dev, "Fix camera S_CROP for %dx%d@%d:%d to %dx%d@%d:%d\n", |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1293 | cam_rect->width, cam_rect->height, |
| 1294 | cam_rect->left, cam_rect->top, |
| 1295 | rect->width, rect->height, rect->left, rect->top); |
| 1296 | |
| 1297 | /* We need sensor maximum rectangle */ |
| 1298 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); |
| 1299 | if (ret < 0) |
| 1300 | return ret; |
| 1301 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1302 | /* Put user requested rectangle within sensor bounds */ |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1303 | soc_camera_limit_side(&rect->left, &rect->width, cap.bounds.left, 2, |
| 1304 | cap.bounds.width); |
| 1305 | soc_camera_limit_side(&rect->top, &rect->height, cap.bounds.top, 4, |
| 1306 | cap.bounds.height); |
| 1307 | |
| 1308 | /* |
| 1309 | * Popular special case - some cameras can only handle fixed sizes like |
| 1310 | * QVGA, VGA,... Take care to avoid infinite loop. |
| 1311 | */ |
| 1312 | width = max(cam_rect->width, 2); |
| 1313 | height = max(cam_rect->height, 2); |
| 1314 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1315 | /* |
| 1316 | * Loop as long as sensor is not covering the requested rectangle and |
| 1317 | * is still within its bounds |
| 1318 | */ |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1319 | while (!ret && (is_smaller(cam_rect, rect) || |
| 1320 | is_inside(cam_rect, rect)) && |
| 1321 | (cap.bounds.width > width || cap.bounds.height > height)) { |
| 1322 | |
| 1323 | width *= 2; |
| 1324 | height *= 2; |
| 1325 | |
| 1326 | cam_rect->width = width; |
| 1327 | cam_rect->height = height; |
| 1328 | |
| 1329 | /* |
| 1330 | * We do not know what capabilities the camera has to set up |
| 1331 | * left and top borders. We could try to be smarter in iterating |
| 1332 | * them, e.g., if camera current left is to the right of the |
| 1333 | * target left, set it to the middle point between the current |
| 1334 | * left and minimum left. But that would add too much |
| 1335 | * complexity: we would have to iterate each border separately. |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1336 | * Instead we just drop to the left and top bounds. |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1337 | */ |
| 1338 | if (cam_rect->left > rect->left) |
| 1339 | cam_rect->left = cap.bounds.left; |
| 1340 | |
| 1341 | if (cam_rect->left + cam_rect->width < rect->left + rect->width) |
| 1342 | cam_rect->width = rect->left + rect->width - |
| 1343 | cam_rect->left; |
| 1344 | |
| 1345 | if (cam_rect->top > rect->top) |
| 1346 | cam_rect->top = cap.bounds.top; |
| 1347 | |
| 1348 | if (cam_rect->top + cam_rect->height < rect->top + rect->height) |
| 1349 | cam_rect->height = rect->top + rect->height - |
| 1350 | cam_rect->top; |
| 1351 | |
| 1352 | v4l2_subdev_call(sd, video, s_crop, cam_crop); |
| 1353 | ret = client_g_rect(sd, cam_rect); |
Márton Németh | e26b314 | 2010-02-24 17:13:29 -0300 | [diff] [blame] | 1354 | dev_geo(dev, "Camera S_CROP %d for %dx%d@%d:%d\n", ret, |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1355 | cam_rect->width, cam_rect->height, |
| 1356 | cam_rect->left, cam_rect->top); |
| 1357 | } |
| 1358 | |
| 1359 | /* S_CROP must not modify the rectangle */ |
| 1360 | if (is_smaller(cam_rect, rect) || is_inside(cam_rect, rect)) { |
| 1361 | /* |
| 1362 | * The camera failed to configure a suitable cropping, |
| 1363 | * we cannot use the current rectangle, set to max |
| 1364 | */ |
| 1365 | *cam_rect = cap.bounds; |
| 1366 | v4l2_subdev_call(sd, video, s_crop, cam_crop); |
| 1367 | ret = client_g_rect(sd, cam_rect); |
Márton Németh | e26b314 | 2010-02-24 17:13:29 -0300 | [diff] [blame] | 1368 | dev_geo(dev, "Camera S_CROP %d for max %dx%d@%d:%d\n", ret, |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1369 | cam_rect->width, cam_rect->height, |
| 1370 | cam_rect->left, cam_rect->top); |
| 1371 | } |
| 1372 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1373 | if (!ret) { |
| 1374 | cam->rect = *cam_rect; |
| 1375 | update_subrect(cam); |
| 1376 | } |
| 1377 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1378 | return ret; |
| 1379 | } |
| 1380 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1381 | /* Iterative s_mbus_fmt, also updates cached client crop on success */ |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1382 | static int client_s_fmt(struct soc_camera_device *icd, |
| 1383 | struct v4l2_mbus_framefmt *mf, bool ceu_can_scale) |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1384 | { |
Guennadi Liakhovetski | 48e971c | 2012-03-14 08:37:03 -0300 | [diff] [blame] | 1385 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| 1386 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1387 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1388 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1389 | struct device *dev = icd->parent; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1390 | unsigned int width = mf->width, height = mf->height, tmp_w, tmp_h; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1391 | unsigned int max_width, max_height; |
| 1392 | struct v4l2_cropcap cap; |
Guennadi Liakhovetski | 3698874 | 2011-07-22 09:44:40 -0300 | [diff] [blame] | 1393 | bool ceu_1to1; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1394 | int ret; |
| 1395 | |
Guennadi Liakhovetski | 4c0b036 | 2011-12-05 16:01:13 -0300 | [diff] [blame] | 1396 | ret = v4l2_device_call_until_err(sd->v4l2_dev, |
| 1397 | soc_camera_grp_id(icd), video, |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 1398 | s_mbus_fmt, mf); |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1399 | if (ret < 0) |
| 1400 | return ret; |
| 1401 | |
| 1402 | dev_geo(dev, "camera scaled to %ux%u\n", mf->width, mf->height); |
| 1403 | |
Guennadi Liakhovetski | 3698874 | 2011-07-22 09:44:40 -0300 | [diff] [blame] | 1404 | if (width == mf->width && height == mf->height) { |
| 1405 | /* Perfect! The client has done it all. */ |
| 1406 | ceu_1to1 = true; |
| 1407 | goto update_cache; |
| 1408 | } |
| 1409 | |
| 1410 | ceu_1to1 = false; |
| 1411 | if (!ceu_can_scale) |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1412 | goto update_cache; |
| 1413 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1414 | cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 1415 | |
| 1416 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); |
| 1417 | if (ret < 0) |
| 1418 | return ret; |
| 1419 | |
Guennadi Liakhovetski | 48e971c | 2012-03-14 08:37:03 -0300 | [diff] [blame] | 1420 | max_width = min(cap.bounds.width, pcdev->max_width); |
| 1421 | max_height = min(cap.bounds.height, pcdev->max_height); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1422 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1423 | /* Camera set a format, but geometry is not precise, try to improve */ |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1424 | tmp_w = mf->width; |
| 1425 | tmp_h = mf->height; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1426 | |
| 1427 | /* width <= max_width && height <= max_height - guaranteed by try_fmt */ |
| 1428 | while ((width > tmp_w || height > tmp_h) && |
| 1429 | tmp_w < max_width && tmp_h < max_height) { |
| 1430 | tmp_w = min(2 * tmp_w, max_width); |
| 1431 | tmp_h = min(2 * tmp_h, max_height); |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1432 | mf->width = tmp_w; |
| 1433 | mf->height = tmp_h; |
Guennadi Liakhovetski | 4c0b036 | 2011-12-05 16:01:13 -0300 | [diff] [blame] | 1434 | ret = v4l2_device_call_until_err(sd->v4l2_dev, |
| 1435 | soc_camera_grp_id(icd), video, |
| 1436 | s_mbus_fmt, mf); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1437 | dev_geo(dev, "Camera scaled to %ux%u\n", |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1438 | mf->width, mf->height); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1439 | if (ret < 0) { |
| 1440 | /* This shouldn't happen */ |
| 1441 | dev_err(dev, "Client failed to set format: %d\n", ret); |
| 1442 | return ret; |
| 1443 | } |
| 1444 | } |
| 1445 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1446 | update_cache: |
| 1447 | /* Update cache */ |
| 1448 | ret = client_g_rect(sd, &cam->rect); |
| 1449 | if (ret < 0) |
| 1450 | return ret; |
| 1451 | |
Guennadi Liakhovetski | 3698874 | 2011-07-22 09:44:40 -0300 | [diff] [blame] | 1452 | if (ceu_1to1) |
| 1453 | cam->subrect = cam->rect; |
| 1454 | else |
| 1455 | update_subrect(cam); |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1456 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1457 | return 0; |
| 1458 | } |
| 1459 | |
| 1460 | /** |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1461 | * @width - on output: user width, mapped back to input |
| 1462 | * @height - on output: user height, mapped back to input |
| 1463 | * @mf - in- / output camera output window |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1464 | */ |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1465 | static int client_scale(struct soc_camera_device *icd, |
| 1466 | struct v4l2_mbus_framefmt *mf, |
| 1467 | unsigned int *width, unsigned int *height, |
| 1468 | bool ceu_can_scale) |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1469 | { |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1470 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1471 | struct device *dev = icd->parent; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1472 | struct v4l2_mbus_framefmt mf_tmp = *mf; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1473 | unsigned int scale_h, scale_v; |
| 1474 | int ret; |
| 1475 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1476 | /* |
| 1477 | * 5. Apply iterative camera S_FMT for camera user window (also updates |
| 1478 | * client crop cache and the imaginary sub-rectangle). |
| 1479 | */ |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1480 | ret = client_s_fmt(icd, &mf_tmp, ceu_can_scale); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1481 | if (ret < 0) |
| 1482 | return ret; |
| 1483 | |
| 1484 | dev_geo(dev, "5: camera scaled to %ux%u\n", |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1485 | mf_tmp.width, mf_tmp.height); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1486 | |
| 1487 | /* 6. Retrieve camera output window (g_fmt) */ |
| 1488 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1489 | /* unneeded - it is already in "mf_tmp" */ |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1490 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1491 | /* 7. Calculate new client scales. */ |
| 1492 | scale_h = calc_generic_scale(cam->rect.width, mf_tmp.width); |
| 1493 | scale_v = calc_generic_scale(cam->rect.height, mf_tmp.height); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1494 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1495 | mf->width = mf_tmp.width; |
| 1496 | mf->height = mf_tmp.height; |
| 1497 | mf->colorspace = mf_tmp.colorspace; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1498 | |
| 1499 | /* |
| 1500 | * 8. Calculate new CEU crop - apply camera scales to previously |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1501 | * updated "effective" crop. |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1502 | */ |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1503 | *width = scale_down(cam->subrect.width, scale_h); |
| 1504 | *height = scale_down(cam->subrect.height, scale_v); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1505 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1506 | dev_geo(dev, "8: new client sub-window %ux%u\n", *width, *height); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1507 | |
| 1508 | return 0; |
| 1509 | } |
| 1510 | |
| 1511 | /* |
| 1512 | * CEU can scale and crop, but we don't want to waste bandwidth and kill the |
| 1513 | * framerate by always requesting the maximum image from the client. See |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 1514 | * Documentation/video4linux/sh_mobile_ceu_camera.txt for a description of |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1515 | * scaling and cropping algorithms and for the meaning of referenced here steps. |
| 1516 | */ |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 1517 | static int sh_mobile_ceu_set_crop(struct soc_camera_device *icd, |
Guennadi Liakhovetski | 08590b9 | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1518 | struct v4l2_crop *a) |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 1519 | { |
Guennadi Liakhovetski | 08590b9 | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1520 | struct v4l2_rect *rect = &a->c; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1521 | struct device *dev = icd->parent; |
| 1522 | struct soc_camera_host *ici = to_soc_camera_host(dev); |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1523 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Guennadi Liakhovetski | 08590b9 | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1524 | struct v4l2_crop cam_crop; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1525 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1526 | struct v4l2_rect *cam_rect = &cam_crop.c; |
Guennadi Liakhovetski | c9c1f1c | 2009-08-25 11:46:59 -0300 | [diff] [blame] | 1527 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1528 | struct v4l2_mbus_framefmt mf; |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1529 | unsigned int scale_cam_h, scale_cam_v, scale_ceu_h, scale_ceu_v, |
Guennadi Liakhovetski | 787d0f9 | 2011-02-16 18:42:24 -0300 | [diff] [blame] | 1530 | out_width, out_height; |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1531 | int interm_width, interm_height; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1532 | u32 capsr, cflcr; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1533 | int ret; |
| 1534 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1535 | dev_geo(dev, "S_CROP(%ux%u@%u:%u)\n", rect->width, rect->height, |
| 1536 | rect->left, rect->top); |
| 1537 | |
| 1538 | /* During camera cropping its output window can change too, stop CEU */ |
| 1539 | capsr = capture_save_reset(pcdev); |
| 1540 | dev_dbg(dev, "CAPSR 0x%x, CFLCR 0x%x\n", capsr, pcdev->cflcr); |
| 1541 | |
Guennadi Liakhovetski | eec5ce0 | 2011-07-22 07:43:15 -0300 | [diff] [blame] | 1542 | /* |
| 1543 | * 1. - 2. Apply iterative camera S_CROP for new input window, read back |
| 1544 | * actual camera rectangle. |
| 1545 | */ |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1546 | ret = client_s_crop(icd, a, &cam_crop); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1547 | if (ret < 0) |
| 1548 | return ret; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1549 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1550 | dev_geo(dev, "1-2: camera cropped to %ux%u@%u:%u\n", |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1551 | cam_rect->width, cam_rect->height, |
| 1552 | cam_rect->left, cam_rect->top); |
| 1553 | |
| 1554 | /* On success cam_crop contains current camera crop */ |
| 1555 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1556 | /* 3. Retrieve camera output window */ |
| 1557 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); |
| 1558 | if (ret < 0) |
| 1559 | return ret; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1560 | |
Guennadi Liakhovetski | 48e971c | 2012-03-14 08:37:03 -0300 | [diff] [blame] | 1561 | if (mf.width > pcdev->max_width || mf.height > pcdev->max_height) |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1562 | return -EINVAL; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1563 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1564 | /* 4. Calculate camera scales */ |
| 1565 | scale_cam_h = calc_generic_scale(cam_rect->width, mf.width); |
| 1566 | scale_cam_v = calc_generic_scale(cam_rect->height, mf.height); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1567 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1568 | /* Calculate intermediate window */ |
| 1569 | interm_width = scale_down(rect->width, scale_cam_h); |
| 1570 | interm_height = scale_down(rect->height, scale_cam_v); |
| 1571 | |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 1572 | if (interm_width < icd->user_width) { |
| 1573 | u32 new_scale_h; |
| 1574 | |
| 1575 | new_scale_h = calc_generic_scale(rect->width, icd->user_width); |
| 1576 | |
| 1577 | mf.width = scale_down(cam_rect->width, new_scale_h); |
| 1578 | } |
| 1579 | |
| 1580 | if (interm_height < icd->user_height) { |
| 1581 | u32 new_scale_v; |
| 1582 | |
| 1583 | new_scale_v = calc_generic_scale(rect->height, icd->user_height); |
| 1584 | |
| 1585 | mf.height = scale_down(cam_rect->height, new_scale_v); |
| 1586 | } |
| 1587 | |
| 1588 | if (interm_width < icd->user_width || interm_height < icd->user_height) { |
Guennadi Liakhovetski | 4c0b036 | 2011-12-05 16:01:13 -0300 | [diff] [blame] | 1589 | ret = v4l2_device_call_until_err(sd->v4l2_dev, |
| 1590 | soc_camera_grp_id(icd), video, |
| 1591 | s_mbus_fmt, &mf); |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 1592 | if (ret < 0) |
| 1593 | return ret; |
| 1594 | |
| 1595 | dev_geo(dev, "New camera output %ux%u\n", mf.width, mf.height); |
| 1596 | scale_cam_h = calc_generic_scale(cam_rect->width, mf.width); |
| 1597 | scale_cam_v = calc_generic_scale(cam_rect->height, mf.height); |
| 1598 | interm_width = scale_down(rect->width, scale_cam_h); |
| 1599 | interm_height = scale_down(rect->height, scale_cam_v); |
| 1600 | } |
| 1601 | |
| 1602 | /* Cache camera output window */ |
| 1603 | cam->width = mf.width; |
| 1604 | cam->height = mf.height; |
| 1605 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1606 | if (pcdev->image_mode) { |
| 1607 | out_width = min(interm_width, icd->user_width); |
| 1608 | out_height = min(interm_height, icd->user_height); |
| 1609 | } else { |
| 1610 | out_width = interm_width; |
| 1611 | out_height = interm_height; |
| 1612 | } |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1613 | |
| 1614 | /* |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1615 | * 5. Calculate CEU scales from camera scales from results of (5) and |
| 1616 | * the user window |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1617 | */ |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1618 | scale_ceu_h = calc_scale(interm_width, &out_width); |
| 1619 | scale_ceu_v = calc_scale(interm_height, &out_height); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1620 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1621 | dev_geo(dev, "5: CEU scales %u:%u\n", scale_ceu_h, scale_ceu_v); |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1622 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1623 | /* Apply CEU scales. */ |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1624 | cflcr = scale_ceu_h | (scale_ceu_v << 16); |
| 1625 | if (cflcr != pcdev->cflcr) { |
| 1626 | pcdev->cflcr = cflcr; |
| 1627 | ceu_write(pcdev, CFLCR, cflcr); |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1628 | } |
| 1629 | |
Guennadi Liakhovetski | eec5ce0 | 2011-07-22 07:43:15 -0300 | [diff] [blame] | 1630 | icd->user_width = out_width & ~3; |
| 1631 | icd->user_height = out_height & ~3; |
| 1632 | /* Offsets are applied at the CEU scaling filter input */ |
Guennadi Liakhovetski | 787d0f9 | 2011-02-16 18:42:24 -0300 | [diff] [blame] | 1633 | cam->ceu_left = scale_down(rect->left - cam_rect->left, scale_cam_h) & ~1; |
| 1634 | cam->ceu_top = scale_down(rect->top - cam_rect->top, scale_cam_v) & ~1; |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1635 | |
| 1636 | /* 6. Use CEU cropping to crop to the new window. */ |
| 1637 | sh_mobile_ceu_set_rect(icd); |
| 1638 | |
| 1639 | cam->subrect = *rect; |
| 1640 | |
| 1641 | dev_geo(dev, "6: CEU cropped to %ux%u@%u:%u\n", |
| 1642 | icd->user_width, icd->user_height, |
| 1643 | cam->ceu_left, cam->ceu_top); |
| 1644 | |
Guennadi Liakhovetski | 787d0f9 | 2011-02-16 18:42:24 -0300 | [diff] [blame] | 1645 | /* Restore capture. The CE bit can be cleared by the hardware */ |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1646 | if (pcdev->active) |
| 1647 | capsr |= 1; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1648 | capture_restore(pcdev, capsr); |
| 1649 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1650 | /* Even if only camera cropping succeeded */ |
| 1651 | return ret; |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 1652 | } |
| 1653 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1654 | static int sh_mobile_ceu_get_crop(struct soc_camera_device *icd, |
| 1655 | struct v4l2_crop *a) |
| 1656 | { |
| 1657 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
| 1658 | |
| 1659 | a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 1660 | a->c = cam->subrect; |
| 1661 | |
| 1662 | return 0; |
| 1663 | } |
| 1664 | |
| 1665 | /* |
| 1666 | * Calculate real client output window by applying new scales to the current |
| 1667 | * client crop. New scales are calculated from the requested output format and |
| 1668 | * CEU crop, mapped backed onto the client input (subrect). |
| 1669 | */ |
| 1670 | static void calculate_client_output(struct soc_camera_device *icd, |
Guennadi Liakhovetski | eec5ce0 | 2011-07-22 07:43:15 -0300 | [diff] [blame] | 1671 | const struct v4l2_pix_format *pix, struct v4l2_mbus_framefmt *mf) |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1672 | { |
| 1673 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1674 | struct device *dev = icd->parent; |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1675 | struct v4l2_rect *cam_subrect = &cam->subrect; |
| 1676 | unsigned int scale_v, scale_h; |
| 1677 | |
| 1678 | if (cam_subrect->width == cam->rect.width && |
| 1679 | cam_subrect->height == cam->rect.height) { |
| 1680 | /* No sub-cropping */ |
| 1681 | mf->width = pix->width; |
| 1682 | mf->height = pix->height; |
| 1683 | return; |
| 1684 | } |
| 1685 | |
| 1686 | /* 1.-2. Current camera scales and subwin - cached. */ |
| 1687 | |
| 1688 | dev_geo(dev, "2: subwin %ux%u@%u:%u\n", |
| 1689 | cam_subrect->width, cam_subrect->height, |
| 1690 | cam_subrect->left, cam_subrect->top); |
| 1691 | |
| 1692 | /* |
| 1693 | * 3. Calculate new combined scales from input sub-window to requested |
| 1694 | * user window. |
| 1695 | */ |
| 1696 | |
| 1697 | /* |
| 1698 | * TODO: CEU cannot scale images larger than VGA to smaller than SubQCIF |
| 1699 | * (128x96) or larger than VGA |
| 1700 | */ |
| 1701 | scale_h = calc_generic_scale(cam_subrect->width, pix->width); |
| 1702 | scale_v = calc_generic_scale(cam_subrect->height, pix->height); |
| 1703 | |
| 1704 | dev_geo(dev, "3: scales %u:%u\n", scale_h, scale_v); |
| 1705 | |
| 1706 | /* |
Guennadi Liakhovetski | 3698874 | 2011-07-22 09:44:40 -0300 | [diff] [blame] | 1707 | * 4. Calculate desired client output window by applying combined scales |
| 1708 | * to client (real) input window. |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1709 | */ |
| 1710 | mf->width = scale_down(cam->rect.width, scale_h); |
| 1711 | mf->height = scale_down(cam->rect.height, scale_v); |
| 1712 | } |
| 1713 | |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1714 | /* Similar to set_crop multistage iterative algorithm */ |
Guennadi Liakhovetski | d8fac21 | 2008-12-01 09:45:21 -0300 | [diff] [blame] | 1715 | static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd, |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 1716 | struct v4l2_format *f) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1717 | { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1718 | struct device *dev = icd->parent; |
| 1719 | struct soc_camera_host *ici = to_soc_camera_host(dev); |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1720 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1721 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
| 1722 | struct v4l2_pix_format *pix = &f->fmt.pix; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1723 | struct v4l2_mbus_framefmt mf; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1724 | __u32 pixfmt = pix->pixelformat; |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1725 | const struct soc_camera_format_xlate *xlate; |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 1726 | /* Keep Compiler Happy */ |
| 1727 | unsigned int ceu_sub_width = 0, ceu_sub_height = 0; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1728 | u16 scale_v, scale_h; |
| 1729 | int ret; |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 1730 | bool image_mode; |
| 1731 | enum v4l2_field field; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1732 | |
| 1733 | switch (pix->field) { |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1734 | default: |
| 1735 | pix->field = V4L2_FIELD_NONE; |
| 1736 | /* fall-through */ |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 1737 | case V4L2_FIELD_INTERLACED_TB: |
| 1738 | case V4L2_FIELD_INTERLACED_BT: |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1739 | case V4L2_FIELD_NONE: |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 1740 | field = pix->field; |
| 1741 | break; |
| 1742 | case V4L2_FIELD_INTERLACED: |
| 1743 | field = V4L2_FIELD_INTERLACED_TB; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1744 | break; |
| 1745 | } |
Guennadi Liakhovetski | 25c4d74 | 2008-12-01 09:44:59 -0300 | [diff] [blame] | 1746 | |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1747 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
| 1748 | if (!xlate) { |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1749 | dev_warn(dev, "Format %x not found\n", pixfmt); |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1750 | return -EINVAL; |
Guennadi Liakhovetski | 25c4d74 | 2008-12-01 09:44:59 -0300 | [diff] [blame] | 1751 | } |
| 1752 | |
Guennadi Liakhovetski | 3698874 | 2011-07-22 09:44:40 -0300 | [diff] [blame] | 1753 | /* 1.-4. Calculate desired client output geometry */ |
Guennadi Liakhovetski | eec5ce0 | 2011-07-22 07:43:15 -0300 | [diff] [blame] | 1754 | calculate_client_output(icd, pix, &mf); |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1755 | mf.field = pix->field; |
| 1756 | mf.colorspace = pix->colorspace; |
| 1757 | mf.code = xlate->code; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1758 | |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1759 | switch (pixfmt) { |
| 1760 | case V4L2_PIX_FMT_NV12: |
| 1761 | case V4L2_PIX_FMT_NV21: |
| 1762 | case V4L2_PIX_FMT_NV16: |
| 1763 | case V4L2_PIX_FMT_NV61: |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1764 | image_mode = true; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1765 | break; |
| 1766 | default: |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1767 | image_mode = false; |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1768 | } |
Guennadi Liakhovetski | 25c4d74 | 2008-12-01 09:44:59 -0300 | [diff] [blame] | 1769 | |
Guennadi Liakhovetski | b5518a4 | 2011-11-03 10:11:11 -0300 | [diff] [blame] | 1770 | dev_geo(dev, "S_FMT(pix=0x%x, fld 0x%x, code 0x%x, %ux%u)\n", pixfmt, mf.field, mf.code, |
Guennadi Liakhovetski | e1db704 | 2011-07-27 18:17:56 -0300 | [diff] [blame] | 1771 | pix->width, pix->height); |
| 1772 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1773 | dev_geo(dev, "4: request camera output %ux%u\n", mf.width, mf.height); |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1774 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1775 | /* 5. - 9. */ |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1776 | ret = client_scale(icd, &mf, &ceu_sub_width, &ceu_sub_height, |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 1777 | image_mode && V4L2_FIELD_NONE == field); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1778 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1779 | dev_geo(dev, "5-9: client scale return %d\n", ret); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1780 | |
| 1781 | /* Done with the camera. Now see if we can improve the result */ |
| 1782 | |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 1783 | dev_geo(dev, "fmt %ux%u, requested %ux%u\n", |
| 1784 | mf.width, mf.height, pix->width, pix->height); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1785 | if (ret < 0) |
| 1786 | return ret; |
| 1787 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1788 | if (mf.code != xlate->code) |
| 1789 | return -EINVAL; |
| 1790 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1791 | /* 9. Prepare CEU crop */ |
| 1792 | cam->width = mf.width; |
| 1793 | cam->height = mf.height; |
| 1794 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1795 | /* 10. Use CEU scaling to scale to the requested user window. */ |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1796 | |
| 1797 | /* We cannot scale up */ |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1798 | if (pix->width > ceu_sub_width) |
| 1799 | ceu_sub_width = pix->width; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1800 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1801 | if (pix->height > ceu_sub_height) |
| 1802 | ceu_sub_height = pix->height; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1803 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1804 | pix->colorspace = mf.colorspace; |
| 1805 | |
| 1806 | if (image_mode) { |
| 1807 | /* Scale pix->{width x height} down to width x height */ |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1808 | scale_h = calc_scale(ceu_sub_width, &pix->width); |
| 1809 | scale_v = calc_scale(ceu_sub_height, &pix->height); |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1810 | } else { |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1811 | pix->width = ceu_sub_width; |
| 1812 | pix->height = ceu_sub_height; |
| 1813 | scale_h = 0; |
| 1814 | scale_v = 0; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1815 | } |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1816 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1817 | pcdev->cflcr = scale_h | (scale_v << 16); |
| 1818 | |
| 1819 | /* |
| 1820 | * We have calculated CFLCR, the actual configuration will be performed |
| 1821 | * in sh_mobile_ceu_set_bus_param() |
| 1822 | */ |
| 1823 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1824 | dev_geo(dev, "10: W: %u : 0x%x = %u, H: %u : 0x%x = %u\n", |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1825 | ceu_sub_width, scale_h, pix->width, |
| 1826 | ceu_sub_height, scale_v, pix->height); |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1827 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1828 | cam->code = xlate->code; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1829 | icd->current_fmt = xlate; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1830 | |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 1831 | pcdev->field = field; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1832 | pcdev->image_mode = image_mode; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1833 | |
Guennadi Liakhovetski | eec5ce0 | 2011-07-22 07:43:15 -0300 | [diff] [blame] | 1834 | /* CFSZR requirement */ |
| 1835 | pix->width &= ~3; |
| 1836 | pix->height &= ~3; |
| 1837 | |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1838 | return 0; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1839 | } |
| 1840 | |
Laurent Pinchart | fc13baf | 2012-03-21 08:16:05 -0300 | [diff] [blame^] | 1841 | #define CEU_CHDW_MAX 8188U /* Maximum line stride */ |
| 1842 | |
Guennadi Liakhovetski | d8fac21 | 2008-12-01 09:45:21 -0300 | [diff] [blame] | 1843 | static int sh_mobile_ceu_try_fmt(struct soc_camera_device *icd, |
| 1844 | struct v4l2_format *f) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1845 | { |
Guennadi Liakhovetski | 48e971c | 2012-03-14 08:37:03 -0300 | [diff] [blame] | 1846 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| 1847 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1848 | const struct soc_camera_format_xlate *xlate; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1849 | struct v4l2_pix_format *pix = &f->fmt.pix; |
Guennadi Liakhovetski | c9c1f1c | 2009-08-25 11:46:59 -0300 | [diff] [blame] | 1850 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1851 | struct v4l2_mbus_framefmt mf; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1852 | __u32 pixfmt = pix->pixelformat; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1853 | int width, height; |
Kuninori Morimoto | ccab8a2 | 2008-12-18 12:51:21 -0300 | [diff] [blame] | 1854 | int ret; |
Guennadi Liakhovetski | a2c8c68 | 2008-12-01 09:44:53 -0300 | [diff] [blame] | 1855 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1856 | dev_geo(icd->parent, "TRY_FMT(pix=0x%x, %ux%u)\n", |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 1857 | pixfmt, pix->width, pix->height); |
| 1858 | |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1859 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
| 1860 | if (!xlate) { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1861 | dev_warn(icd->parent, "Format %x not found\n", pixfmt); |
Guennadi Liakhovetski | 25c4d74 | 2008-12-01 09:44:59 -0300 | [diff] [blame] | 1862 | return -EINVAL; |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1863 | } |
Guennadi Liakhovetski | 25c4d74 | 2008-12-01 09:44:59 -0300 | [diff] [blame] | 1864 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1865 | /* FIXME: calculate using depth and bus width */ |
| 1866 | |
Guennadi Liakhovetski | eec5ce0 | 2011-07-22 07:43:15 -0300 | [diff] [blame] | 1867 | /* CFSZR requires height and width to be 4-pixel aligned */ |
Guennadi Liakhovetski | 48e971c | 2012-03-14 08:37:03 -0300 | [diff] [blame] | 1868 | v4l_bound_align_image(&pix->width, 2, pcdev->max_width, 2, |
| 1869 | &pix->height, 4, pcdev->max_height, 2, 0); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1870 | |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1871 | width = pix->width; |
| 1872 | height = pix->height; |
| 1873 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1874 | /* limit to sensor capabilities */ |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1875 | mf.width = pix->width; |
| 1876 | mf.height = pix->height; |
| 1877 | mf.field = pix->field; |
| 1878 | mf.code = xlate->code; |
| 1879 | mf.colorspace = pix->colorspace; |
| 1880 | |
Guennadi Liakhovetski | 4c0b036 | 2011-12-05 16:01:13 -0300 | [diff] [blame] | 1881 | ret = v4l2_device_call_until_err(sd->v4l2_dev, soc_camera_grp_id(icd), |
| 1882 | video, try_mbus_fmt, &mf); |
Kuninori Morimoto | ccab8a2 | 2008-12-18 12:51:21 -0300 | [diff] [blame] | 1883 | if (ret < 0) |
| 1884 | return ret; |
| 1885 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1886 | pix->width = mf.width; |
| 1887 | pix->height = mf.height; |
| 1888 | pix->field = mf.field; |
| 1889 | pix->colorspace = mf.colorspace; |
| 1890 | |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1891 | switch (pixfmt) { |
| 1892 | case V4L2_PIX_FMT_NV12: |
| 1893 | case V4L2_PIX_FMT_NV21: |
| 1894 | case V4L2_PIX_FMT_NV16: |
| 1895 | case V4L2_PIX_FMT_NV61: |
| 1896 | /* FIXME: check against rect_max after converting soc-camera */ |
| 1897 | /* We can scale precisely, need a bigger image from camera */ |
| 1898 | if (pix->width < width || pix->height < height) { |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1899 | /* |
| 1900 | * We presume, the sensor behaves sanely, i.e., if |
| 1901 | * requested a bigger rectangle, it will not return a |
| 1902 | * smaller one. |
| 1903 | */ |
Guennadi Liakhovetski | 48e971c | 2012-03-14 08:37:03 -0300 | [diff] [blame] | 1904 | mf.width = pcdev->max_width; |
| 1905 | mf.height = pcdev->max_height; |
Guennadi Liakhovetski | 4c0b036 | 2011-12-05 16:01:13 -0300 | [diff] [blame] | 1906 | ret = v4l2_device_call_until_err(sd->v4l2_dev, |
| 1907 | soc_camera_grp_id(icd), video, |
| 1908 | try_mbus_fmt, &mf); |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1909 | if (ret < 0) { |
| 1910 | /* Shouldn't actually happen... */ |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1911 | dev_err(icd->parent, |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1912 | "FIXME: client try_fmt() = %d\n", ret); |
| 1913 | return ret; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1914 | } |
| 1915 | } |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1916 | /* We will scale exactly */ |
| 1917 | if (mf.width > width) |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1918 | pix->width = width; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1919 | if (mf.height > height) |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1920 | pix->height = height; |
Laurent Pinchart | fc13baf | 2012-03-21 08:16:05 -0300 | [diff] [blame^] | 1921 | |
| 1922 | pix->bytesperline = max(pix->bytesperline, pix->width); |
| 1923 | pix->bytesperline = min(pix->bytesperline, CEU_CHDW_MAX); |
| 1924 | pix->bytesperline &= ~3; |
| 1925 | break; |
| 1926 | |
| 1927 | default: |
| 1928 | /* Configurable stride isn't supported in pass-through mode. */ |
| 1929 | pix->bytesperline = 0; |
Kuninori Morimoto | ccab8a2 | 2008-12-18 12:51:21 -0300 | [diff] [blame] | 1930 | } |
| 1931 | |
Guennadi Liakhovetski | eec5ce0 | 2011-07-22 07:43:15 -0300 | [diff] [blame] | 1932 | pix->width &= ~3; |
| 1933 | pix->height &= ~3; |
Laurent Pinchart | fc13baf | 2012-03-21 08:16:05 -0300 | [diff] [blame^] | 1934 | pix->sizeimage = 0; |
Guennadi Liakhovetski | eec5ce0 | 2011-07-22 07:43:15 -0300 | [diff] [blame] | 1935 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1936 | dev_geo(icd->parent, "%s(): return %d, fmt 0x%x, %ux%u\n", |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 1937 | __func__, ret, pix->pixelformat, pix->width, pix->height); |
| 1938 | |
Kuninori Morimoto | ccab8a2 | 2008-12-18 12:51:21 -0300 | [diff] [blame] | 1939 | return ret; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1940 | } |
| 1941 | |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 1942 | static int sh_mobile_ceu_set_livecrop(struct soc_camera_device *icd, |
| 1943 | struct v4l2_crop *a) |
| 1944 | { |
| 1945 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1946 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 1947 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
| 1948 | u32 out_width = icd->user_width, out_height = icd->user_height; |
| 1949 | int ret; |
| 1950 | |
| 1951 | /* Freeze queue */ |
| 1952 | pcdev->frozen = 1; |
| 1953 | /* Wait for frame */ |
| 1954 | ret = wait_for_completion_interruptible(&pcdev->complete); |
| 1955 | /* Stop the client */ |
| 1956 | ret = v4l2_subdev_call(sd, video, s_stream, 0); |
| 1957 | if (ret < 0) |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1958 | dev_warn(icd->parent, |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 1959 | "Client failed to stop the stream: %d\n", ret); |
| 1960 | else |
| 1961 | /* Do the crop, if it fails, there's nothing more we can do */ |
| 1962 | sh_mobile_ceu_set_crop(icd, a); |
| 1963 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1964 | dev_geo(icd->parent, "Output after crop: %ux%u\n", icd->user_width, icd->user_height); |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 1965 | |
| 1966 | if (icd->user_width != out_width || icd->user_height != out_height) { |
| 1967 | struct v4l2_format f = { |
| 1968 | .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, |
| 1969 | .fmt.pix = { |
| 1970 | .width = out_width, |
| 1971 | .height = out_height, |
| 1972 | .pixelformat = icd->current_fmt->host_fmt->fourcc, |
| 1973 | .field = pcdev->field, |
| 1974 | .colorspace = icd->colorspace, |
| 1975 | }, |
| 1976 | }; |
| 1977 | ret = sh_mobile_ceu_set_fmt(icd, &f); |
| 1978 | if (!ret && (out_width != f.fmt.pix.width || |
| 1979 | out_height != f.fmt.pix.height)) |
| 1980 | ret = -EINVAL; |
| 1981 | if (!ret) { |
Guennadi Liakhovetski | eec5ce0 | 2011-07-22 07:43:15 -0300 | [diff] [blame] | 1982 | icd->user_width = out_width & ~3; |
| 1983 | icd->user_height = out_height & ~3; |
Guennadi Liakhovetski | 8843d11 | 2011-09-21 17:52:51 -0300 | [diff] [blame] | 1984 | ret = sh_mobile_ceu_set_bus_param(icd); |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 1985 | } |
| 1986 | } |
| 1987 | |
| 1988 | /* Thaw the queue */ |
| 1989 | pcdev->frozen = 0; |
| 1990 | spin_lock_irq(&pcdev->lock); |
| 1991 | sh_mobile_ceu_capture(pcdev); |
| 1992 | spin_unlock_irq(&pcdev->lock); |
| 1993 | /* Start the client */ |
| 1994 | ret = v4l2_subdev_call(sd, video, s_stream, 1); |
| 1995 | return ret; |
| 1996 | } |
| 1997 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1998 | static unsigned int sh_mobile_ceu_poll(struct file *file, poll_table *pt) |
| 1999 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 2000 | struct soc_camera_device *icd = file->private_data; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2001 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 2002 | return vb2_poll(&icd->vb2_vidq, file, pt); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2003 | } |
| 2004 | |
| 2005 | static int sh_mobile_ceu_querycap(struct soc_camera_host *ici, |
| 2006 | struct v4l2_capability *cap) |
| 2007 | { |
| 2008 | strlcpy(cap->card, "SuperH_Mobile_CEU", sizeof(cap->card)); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2009 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; |
| 2010 | return 0; |
| 2011 | } |
| 2012 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 2013 | static int sh_mobile_ceu_init_videobuf(struct vb2_queue *q, |
| 2014 | struct soc_camera_device *icd) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2015 | { |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 2016 | q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 2017 | q->io_modes = VB2_MMAP | VB2_USERPTR; |
| 2018 | q->drv_priv = icd; |
| 2019 | q->ops = &sh_mobile_ceu_videobuf_ops; |
| 2020 | q->mem_ops = &vb2_dma_contig_memops; |
| 2021 | q->buf_struct_size = sizeof(struct sh_mobile_ceu_buffer); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2022 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 2023 | return vb2_queue_init(q); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2024 | } |
| 2025 | |
| 2026 | static struct soc_camera_host_ops sh_mobile_ceu_host_ops = { |
| 2027 | .owner = THIS_MODULE, |
| 2028 | .add = sh_mobile_ceu_add_device, |
| 2029 | .remove = sh_mobile_ceu_remove_device, |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 2030 | .get_formats = sh_mobile_ceu_get_formats, |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 2031 | .put_formats = sh_mobile_ceu_put_formats, |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 2032 | .get_crop = sh_mobile_ceu_get_crop, |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 2033 | .set_crop = sh_mobile_ceu_set_crop, |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 2034 | .set_livecrop = sh_mobile_ceu_set_livecrop, |
Guennadi Liakhovetski | d8fac21 | 2008-12-01 09:45:21 -0300 | [diff] [blame] | 2035 | .set_fmt = sh_mobile_ceu_set_fmt, |
| 2036 | .try_fmt = sh_mobile_ceu_try_fmt, |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2037 | .poll = sh_mobile_ceu_poll, |
| 2038 | .querycap = sh_mobile_ceu_querycap, |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2039 | .set_bus_param = sh_mobile_ceu_set_bus_param, |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 2040 | .init_videobuf2 = sh_mobile_ceu_init_videobuf, |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2041 | }; |
| 2042 | |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 2043 | struct bus_wait { |
| 2044 | struct notifier_block notifier; |
| 2045 | struct completion completion; |
| 2046 | struct device *dev; |
| 2047 | }; |
| 2048 | |
| 2049 | static int bus_notify(struct notifier_block *nb, |
| 2050 | unsigned long action, void *data) |
| 2051 | { |
| 2052 | struct device *dev = data; |
| 2053 | struct bus_wait *wait = container_of(nb, struct bus_wait, notifier); |
| 2054 | |
| 2055 | if (wait->dev != dev) |
| 2056 | return NOTIFY_DONE; |
| 2057 | |
| 2058 | switch (action) { |
| 2059 | case BUS_NOTIFY_UNBOUND_DRIVER: |
| 2060 | /* Protect from module unloading */ |
| 2061 | wait_for_completion(&wait->completion); |
| 2062 | return NOTIFY_OK; |
| 2063 | } |
| 2064 | return NOTIFY_DONE; |
| 2065 | } |
| 2066 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 2067 | static int __devinit sh_mobile_ceu_probe(struct platform_device *pdev) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2068 | { |
| 2069 | struct sh_mobile_ceu_dev *pcdev; |
| 2070 | struct resource *res; |
| 2071 | void __iomem *base; |
| 2072 | unsigned int irq; |
| 2073 | int err = 0; |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 2074 | struct bus_wait wait = { |
| 2075 | .completion = COMPLETION_INITIALIZER_ONSTACK(wait.completion), |
| 2076 | .notifier.notifier_call = bus_notify, |
| 2077 | }; |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 2078 | struct sh_mobile_ceu_companion *csi2; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2079 | |
| 2080 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 2081 | irq = platform_get_irq(pdev, 0); |
Uwe Kleine-König | b89fc2e | 2010-01-09 20:45:13 -0300 | [diff] [blame] | 2082 | if (!res || (int)irq <= 0) { |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2083 | dev_err(&pdev->dev, "Not enough CEU platform resources.\n"); |
| 2084 | err = -ENODEV; |
| 2085 | goto exit; |
| 2086 | } |
| 2087 | |
| 2088 | pcdev = kzalloc(sizeof(*pcdev), GFP_KERNEL); |
| 2089 | if (!pcdev) { |
| 2090 | dev_err(&pdev->dev, "Could not allocate pcdev\n"); |
| 2091 | err = -ENOMEM; |
| 2092 | goto exit; |
| 2093 | } |
| 2094 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2095 | INIT_LIST_HEAD(&pcdev->capture); |
| 2096 | spin_lock_init(&pcdev->lock); |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 2097 | init_completion(&pcdev->complete); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2098 | |
| 2099 | pcdev->pdata = pdev->dev.platform_data; |
| 2100 | if (!pcdev->pdata) { |
| 2101 | err = -EINVAL; |
| 2102 | dev_err(&pdev->dev, "CEU platform data not set.\n"); |
| 2103 | goto exit_kfree; |
| 2104 | } |
| 2105 | |
Guennadi Liakhovetski | 48e971c | 2012-03-14 08:37:03 -0300 | [diff] [blame] | 2106 | pcdev->max_width = pcdev->pdata->max_width ? : 2560; |
| 2107 | pcdev->max_height = pcdev->pdata->max_height ? : 1920; |
| 2108 | |
Guennadi Liakhovetski | eb6c855 | 2009-04-24 12:55:18 -0300 | [diff] [blame] | 2109 | base = ioremap_nocache(res->start, resource_size(res)); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2110 | if (!base) { |
| 2111 | err = -ENXIO; |
| 2112 | dev_err(&pdev->dev, "Unable to ioremap CEU registers.\n"); |
| 2113 | goto exit_kfree; |
| 2114 | } |
| 2115 | |
| 2116 | pcdev->irq = irq; |
| 2117 | pcdev->base = base; |
| 2118 | pcdev->video_limit = 0; /* only enabled if second resource exists */ |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2119 | |
| 2120 | res = platform_get_resource(pdev, IORESOURCE_MEM, 1); |
| 2121 | if (res) { |
| 2122 | err = dma_declare_coherent_memory(&pdev->dev, res->start, |
| 2123 | res->start, |
Guennadi Liakhovetski | eb6c855 | 2009-04-24 12:55:18 -0300 | [diff] [blame] | 2124 | resource_size(res), |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2125 | DMA_MEMORY_MAP | |
| 2126 | DMA_MEMORY_EXCLUSIVE); |
| 2127 | if (!err) { |
| 2128 | dev_err(&pdev->dev, "Unable to declare CEU memory.\n"); |
| 2129 | err = -ENXIO; |
| 2130 | goto exit_iounmap; |
| 2131 | } |
| 2132 | |
Guennadi Liakhovetski | eb6c855 | 2009-04-24 12:55:18 -0300 | [diff] [blame] | 2133 | pcdev->video_limit = resource_size(res); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2134 | } |
| 2135 | |
| 2136 | /* request irq */ |
| 2137 | err = request_irq(pcdev->irq, sh_mobile_ceu_irq, IRQF_DISABLED, |
Kay Sievers | af128a1 | 2008-10-30 00:51:46 -0300 | [diff] [blame] | 2138 | dev_name(&pdev->dev), pcdev); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2139 | if (err) { |
| 2140 | dev_err(&pdev->dev, "Unable to register CEU interrupt.\n"); |
| 2141 | goto exit_release_mem; |
| 2142 | } |
| 2143 | |
Magnus Damm | 6d1386c | 2009-08-14 10:49:17 +0000 | [diff] [blame] | 2144 | pm_suspend_ignore_children(&pdev->dev, true); |
| 2145 | pm_runtime_enable(&pdev->dev); |
| 2146 | pm_runtime_resume(&pdev->dev); |
Magnus Damm | a42b6dd | 2008-10-31 20:21:44 +0900 | [diff] [blame] | 2147 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2148 | pcdev->ici.priv = pcdev; |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 2149 | pcdev->ici.v4l2_dev.dev = &pdev->dev; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2150 | pcdev->ici.nr = pdev->id; |
Kay Sievers | af128a1 | 2008-10-30 00:51:46 -0300 | [diff] [blame] | 2151 | pcdev->ici.drv_name = dev_name(&pdev->dev); |
| 2152 | pcdev->ici.ops = &sh_mobile_ceu_host_ops; |
Laurent Pinchart | fc13baf | 2012-03-21 08:16:05 -0300 | [diff] [blame^] | 2153 | pcdev->ici.capabilities = SOCAM_HOST_CAP_STRIDE; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2154 | |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 2155 | pcdev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev); |
| 2156 | if (IS_ERR(pcdev->alloc_ctx)) { |
| 2157 | err = PTR_ERR(pcdev->alloc_ctx); |
| 2158 | goto exit_free_clk; |
| 2159 | } |
| 2160 | |
| 2161 | err = soc_camera_host_register(&pcdev->ici); |
| 2162 | if (err) |
| 2163 | goto exit_free_ctx; |
| 2164 | |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 2165 | /* CSI2 interfacing */ |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 2166 | csi2 = pcdev->pdata->csi2; |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 2167 | if (csi2) { |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 2168 | struct platform_device *csi2_pdev = |
| 2169 | platform_device_alloc("sh-mobile-csi2", csi2->id); |
| 2170 | struct sh_csi2_pdata *csi2_pdata = csi2->platform_data; |
| 2171 | |
| 2172 | if (!csi2_pdev) { |
| 2173 | err = -ENOMEM; |
| 2174 | goto exit_host_unregister; |
| 2175 | } |
| 2176 | |
| 2177 | pcdev->csi2_pdev = csi2_pdev; |
| 2178 | |
| 2179 | err = platform_device_add_data(csi2_pdev, csi2_pdata, sizeof(*csi2_pdata)); |
| 2180 | if (err < 0) |
| 2181 | goto exit_pdev_put; |
| 2182 | |
| 2183 | csi2_pdata = csi2_pdev->dev.platform_data; |
| 2184 | csi2_pdata->v4l2_dev = &pcdev->ici.v4l2_dev; |
| 2185 | |
| 2186 | csi2_pdev->resource = csi2->resource; |
| 2187 | csi2_pdev->num_resources = csi2->num_resources; |
| 2188 | |
| 2189 | err = platform_device_add(csi2_pdev); |
| 2190 | if (err < 0) |
| 2191 | goto exit_pdev_put; |
| 2192 | |
| 2193 | wait.dev = &csi2_pdev->dev; |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 2194 | |
| 2195 | err = bus_register_notifier(&platform_bus_type, &wait.notifier); |
| 2196 | if (err < 0) |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 2197 | goto exit_pdev_unregister; |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 2198 | |
| 2199 | /* |
| 2200 | * From this point the driver module will not unload, until |
| 2201 | * we complete the completion. |
| 2202 | */ |
| 2203 | |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 2204 | if (!csi2_pdev->dev.driver) { |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 2205 | complete(&wait.completion); |
| 2206 | /* Either too late, or probing failed */ |
| 2207 | bus_unregister_notifier(&platform_bus_type, &wait.notifier); |
| 2208 | err = -ENXIO; |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 2209 | goto exit_pdev_unregister; |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 2210 | } |
| 2211 | |
| 2212 | /* |
| 2213 | * The module is still loaded, in the worst case it is hanging |
| 2214 | * in device release on our completion. So, _now_ dereferencing |
| 2215 | * the "owner" is safe! |
| 2216 | */ |
| 2217 | |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 2218 | err = try_module_get(csi2_pdev->dev.driver->owner); |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 2219 | |
| 2220 | /* Let notifier complete, if it has been locked */ |
| 2221 | complete(&wait.completion); |
| 2222 | bus_unregister_notifier(&platform_bus_type, &wait.notifier); |
| 2223 | if (!err) { |
| 2224 | err = -ENODEV; |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 2225 | goto exit_pdev_unregister; |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 2226 | } |
| 2227 | } |
| 2228 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2229 | return 0; |
| 2230 | |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 2231 | exit_pdev_unregister: |
| 2232 | platform_device_del(pcdev->csi2_pdev); |
| 2233 | exit_pdev_put: |
| 2234 | pcdev->csi2_pdev->resource = NULL; |
| 2235 | platform_device_put(pcdev->csi2_pdev); |
| 2236 | exit_host_unregister: |
| 2237 | soc_camera_host_unregister(&pcdev->ici); |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 2238 | exit_free_ctx: |
| 2239 | vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx); |
Kuninori Morimoto | 055e05a | 2009-11-09 16:13:24 -0300 | [diff] [blame] | 2240 | exit_free_clk: |
| 2241 | pm_runtime_disable(&pdev->dev); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2242 | free_irq(pcdev->irq, pcdev); |
| 2243 | exit_release_mem: |
| 2244 | if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) |
| 2245 | dma_release_declared_memory(&pdev->dev); |
| 2246 | exit_iounmap: |
| 2247 | iounmap(base); |
| 2248 | exit_kfree: |
| 2249 | kfree(pcdev); |
| 2250 | exit: |
| 2251 | return err; |
| 2252 | } |
| 2253 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 2254 | static int __devexit sh_mobile_ceu_remove(struct platform_device *pdev) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2255 | { |
Guennadi Liakhovetski | eff505f | 2009-04-24 12:55:48 -0300 | [diff] [blame] | 2256 | struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev); |
| 2257 | struct sh_mobile_ceu_dev *pcdev = container_of(soc_host, |
| 2258 | struct sh_mobile_ceu_dev, ici); |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 2259 | struct platform_device *csi2_pdev = pcdev->csi2_pdev; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2260 | |
Guennadi Liakhovetski | eff505f | 2009-04-24 12:55:48 -0300 | [diff] [blame] | 2261 | soc_camera_host_unregister(soc_host); |
Kuninori Morimoto | 055e05a | 2009-11-09 16:13:24 -0300 | [diff] [blame] | 2262 | pm_runtime_disable(&pdev->dev); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2263 | free_irq(pcdev->irq, pcdev); |
| 2264 | if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) |
| 2265 | dma_release_declared_memory(&pdev->dev); |
| 2266 | iounmap(pcdev->base); |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 2267 | vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx); |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 2268 | if (csi2_pdev && csi2_pdev->dev.driver) { |
| 2269 | struct module *csi2_drv = csi2_pdev->dev.driver->owner; |
| 2270 | platform_device_del(csi2_pdev); |
| 2271 | csi2_pdev->resource = NULL; |
| 2272 | platform_device_put(csi2_pdev); |
| 2273 | module_put(csi2_drv); |
| 2274 | } |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2275 | kfree(pcdev); |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 2276 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2277 | return 0; |
| 2278 | } |
| 2279 | |
Magnus Damm | 6d1386c | 2009-08-14 10:49:17 +0000 | [diff] [blame] | 2280 | static int sh_mobile_ceu_runtime_nop(struct device *dev) |
| 2281 | { |
| 2282 | /* Runtime PM callback shared between ->runtime_suspend() |
| 2283 | * and ->runtime_resume(). Simply returns success. |
| 2284 | * |
| 2285 | * This driver re-initializes all registers after |
| 2286 | * pm_runtime_get_sync() anyway so there is no need |
| 2287 | * to save and restore registers here. |
| 2288 | */ |
| 2289 | return 0; |
| 2290 | } |
| 2291 | |
Alexey Dobriyan | 4714521 | 2009-12-14 18:00:08 -0800 | [diff] [blame] | 2292 | static const struct dev_pm_ops sh_mobile_ceu_dev_pm_ops = { |
Magnus Damm | 6d1386c | 2009-08-14 10:49:17 +0000 | [diff] [blame] | 2293 | .runtime_suspend = sh_mobile_ceu_runtime_nop, |
| 2294 | .runtime_resume = sh_mobile_ceu_runtime_nop, |
| 2295 | }; |
| 2296 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2297 | static struct platform_driver sh_mobile_ceu_driver = { |
| 2298 | .driver = { |
| 2299 | .name = "sh_mobile_ceu", |
Magnus Damm | 6d1386c | 2009-08-14 10:49:17 +0000 | [diff] [blame] | 2300 | .pm = &sh_mobile_ceu_dev_pm_ops, |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2301 | }, |
| 2302 | .probe = sh_mobile_ceu_probe, |
Uwe Kleine-König | 50e55fd | 2009-12-10 17:00:13 -0300 | [diff] [blame] | 2303 | .remove = __devexit_p(sh_mobile_ceu_remove), |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2304 | }; |
| 2305 | |
| 2306 | static int __init sh_mobile_ceu_init(void) |
| 2307 | { |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 2308 | /* Whatever return code */ |
| 2309 | request_module("sh_mobile_csi2"); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2310 | return platform_driver_register(&sh_mobile_ceu_driver); |
| 2311 | } |
| 2312 | |
| 2313 | static void __exit sh_mobile_ceu_exit(void) |
| 2314 | { |
Paul Mundt | 01c1e4c | 2008-08-01 19:48:51 -0300 | [diff] [blame] | 2315 | platform_driver_unregister(&sh_mobile_ceu_driver); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2316 | } |
| 2317 | |
| 2318 | module_init(sh_mobile_ceu_init); |
| 2319 | module_exit(sh_mobile_ceu_exit); |
| 2320 | |
| 2321 | MODULE_DESCRIPTION("SuperH Mobile CEU driver"); |
| 2322 | MODULE_AUTHOR("Magnus Damm"); |
| 2323 | MODULE_LICENSE("GPL"); |
Mauro Carvalho Chehab | 64dc3c1 | 2011-06-25 11:28:37 -0300 | [diff] [blame] | 2324 | MODULE_VERSION("0.0.6"); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 2325 | MODULE_ALIAS("platform:sh_mobile_ceu"); |