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; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 93 | enum v4l2_mbus_pixelcode code; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 94 | }; |
| 95 | |
| 96 | struct sh_mobile_ceu_dev { |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 97 | struct soc_camera_host ici; |
| 98 | struct soc_camera_device *icd; |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 99 | struct platform_device *csi2_pdev; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 100 | |
| 101 | unsigned int irq; |
| 102 | void __iomem *base; |
| 103 | unsigned long video_limit; |
| 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 | |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 115 | enum v4l2_field field; |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 116 | int sequence; |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 117 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 118 | unsigned int image_mode:1; |
| 119 | unsigned int is_16bit:1; |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 120 | unsigned int frozen:1; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 121 | }; |
| 122 | |
| 123 | struct sh_mobile_ceu_cam { |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 124 | /* CEU offsets within scaled by the CEU camera output */ |
| 125 | unsigned int ceu_left; |
| 126 | unsigned int ceu_top; |
| 127 | /* Client output, as seen by the CEU */ |
| 128 | unsigned int width; |
| 129 | unsigned int height; |
| 130 | /* |
| 131 | * User window from S_CROP / G_CROP, produced by client cropping and |
| 132 | * scaling, CEU scaling and CEU cropping, mapped back onto the client |
| 133 | * input window |
| 134 | */ |
| 135 | struct v4l2_rect subrect; |
| 136 | /* Camera cropping rectangle */ |
| 137 | struct v4l2_rect rect; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 138 | const struct soc_mbus_pixelfmt *extra_fmt; |
| 139 | enum v4l2_mbus_pixelcode code; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 140 | }; |
| 141 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 142 | static struct sh_mobile_ceu_buffer *to_ceu_vb(struct vb2_buffer *vb) |
| 143 | { |
| 144 | return container_of(vb, struct sh_mobile_ceu_buffer, vb); |
| 145 | } |
| 146 | |
Kuninori Morimoto | c354b40 | 2009-02-23 12:12:58 -0300 | [diff] [blame] | 147 | static unsigned long make_bus_param(struct sh_mobile_ceu_dev *pcdev) |
| 148 | { |
| 149 | unsigned long flags; |
| 150 | |
| 151 | flags = SOCAM_MASTER | |
| 152 | SOCAM_PCLK_SAMPLE_RISING | |
| 153 | SOCAM_HSYNC_ACTIVE_HIGH | |
| 154 | SOCAM_HSYNC_ACTIVE_LOW | |
| 155 | SOCAM_VSYNC_ACTIVE_HIGH | |
| 156 | SOCAM_VSYNC_ACTIVE_LOW | |
| 157 | SOCAM_DATA_ACTIVE_HIGH; |
| 158 | |
| 159 | if (pcdev->pdata->flags & SH_CEU_FLAG_USE_8BIT_BUS) |
| 160 | flags |= SOCAM_DATAWIDTH_8; |
| 161 | |
| 162 | if (pcdev->pdata->flags & SH_CEU_FLAG_USE_16BIT_BUS) |
| 163 | flags |= SOCAM_DATAWIDTH_16; |
| 164 | |
| 165 | if (flags & SOCAM_DATAWIDTH_MASK) |
| 166 | return flags; |
| 167 | |
| 168 | return 0; |
| 169 | } |
| 170 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 171 | static void ceu_write(struct sh_mobile_ceu_dev *priv, |
Magnus Damm | 7a1a816 | 2008-12-18 12:50:30 -0300 | [diff] [blame] | 172 | unsigned long reg_offs, u32 data) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 173 | { |
| 174 | iowrite32(data, priv->base + reg_offs); |
| 175 | } |
| 176 | |
Magnus Damm | 7a1a816 | 2008-12-18 12:50:30 -0300 | [diff] [blame] | 177 | 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] | 178 | { |
| 179 | return ioread32(priv->base + reg_offs); |
| 180 | } |
| 181 | |
Kuninori Morimoto | b1de7ae | 2009-10-05 12:48:20 -0300 | [diff] [blame] | 182 | static int sh_mobile_ceu_soft_reset(struct sh_mobile_ceu_dev *pcdev) |
| 183 | { |
| 184 | int i, success = 0; |
| 185 | struct soc_camera_device *icd = pcdev->icd; |
| 186 | |
| 187 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset */ |
| 188 | |
| 189 | /* wait CSTSR.CPTON bit */ |
| 190 | for (i = 0; i < 1000; i++) { |
| 191 | if (!(ceu_read(pcdev, CSTSR) & 1)) { |
| 192 | success++; |
| 193 | break; |
| 194 | } |
| 195 | udelay(1); |
| 196 | } |
| 197 | |
| 198 | /* wait CAPSR.CPKIL bit */ |
| 199 | for (i = 0; i < 1000; i++) { |
| 200 | if (!(ceu_read(pcdev, CAPSR) & (1 << 16))) { |
| 201 | success++; |
| 202 | break; |
| 203 | } |
| 204 | udelay(1); |
| 205 | } |
| 206 | |
| 207 | |
| 208 | if (2 != success) { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 209 | dev_warn(icd->pdev, "soft reset time out\n"); |
Kuninori Morimoto | b1de7ae | 2009-10-05 12:48:20 -0300 | [diff] [blame] | 210 | return -EIO; |
| 211 | } |
| 212 | |
| 213 | return 0; |
| 214 | } |
| 215 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 216 | /* |
| 217 | * Videobuf operations |
| 218 | */ |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 219 | static int sh_mobile_ceu_videobuf_setup(struct vb2_queue *vq, |
| 220 | unsigned int *count, unsigned int *num_planes, |
| 221 | unsigned long sizes[], void *alloc_ctxs[]) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 222 | { |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 223 | 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] | 224 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 225 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 226 | int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, |
| 227 | icd->current_fmt->host_fmt); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 228 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 229 | if (bytes_per_line < 0) |
| 230 | return bytes_per_line; |
| 231 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 232 | *num_planes = 1; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 233 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 234 | pcdev->sequence = 0; |
| 235 | sizes[0] = bytes_per_line * icd->user_height; |
| 236 | alloc_ctxs[0] = pcdev->alloc_ctx; |
| 237 | |
| 238 | if (!*count) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 239 | *count = 2; |
| 240 | |
| 241 | if (pcdev->video_limit) { |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 242 | if (PAGE_ALIGN(sizes[0]) * *count > pcdev->video_limit) |
| 243 | *count = pcdev->video_limit / PAGE_ALIGN(sizes[0]); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 244 | } |
| 245 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 246 | dev_dbg(icd->parent, "count=%d, size=%lu\n", *count, sizes[0]); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 247 | |
| 248 | return 0; |
| 249 | } |
| 250 | |
Magnus Damm | 7a1a816 | 2008-12-18 12:50:30 -0300 | [diff] [blame] | 251 | #define CEU_CETCR_MAGIC 0x0317f313 /* acknowledge magical interrupt sources */ |
| 252 | #define CEU_CETCR_IGRW (1 << 4) /* prohibited register access interrupt bit */ |
| 253 | #define CEU_CEIER_CPEIE (1 << 0) /* one-frame capture end interrupt */ |
Kuninori Morimoto | 5cf93f1 | 2009-10-05 12:48:59 -0300 | [diff] [blame] | 254 | #define CEU_CEIER_VBP (1 << 20) /* vbp error */ |
Magnus Damm | 7a1a816 | 2008-12-18 12:50:30 -0300 | [diff] [blame] | 255 | #define CEU_CAPCR_CTNCP (1 << 16) /* continuous capture mode (if set) */ |
Kuninori Morimoto | 5cf93f1 | 2009-10-05 12:48:59 -0300 | [diff] [blame] | 256 | #define CEU_CEIER_MASK (CEU_CEIER_CPEIE | CEU_CEIER_VBP) |
Magnus Damm | 7a1a816 | 2008-12-18 12:50:30 -0300 | [diff] [blame] | 257 | |
| 258 | |
Kuninori Morimoto | 5cf93f1 | 2009-10-05 12:48:59 -0300 | [diff] [blame] | 259 | /* |
| 260 | * return value doesn't reflex the success/failure to queue the new buffer, |
| 261 | * but rather the status of the previous buffer. |
| 262 | */ |
| 263 | static int sh_mobile_ceu_capture(struct sh_mobile_ceu_dev *pcdev) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 264 | { |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 265 | struct soc_camera_device *icd = pcdev->icd; |
Kuninori Morimoto | ccab8a2 | 2008-12-18 12:51:21 -0300 | [diff] [blame] | 266 | dma_addr_t phys_addr_top, phys_addr_bottom; |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 267 | unsigned long top1, top2; |
| 268 | unsigned long bottom1, bottom2; |
Kuninori Morimoto | 5cf93f1 | 2009-10-05 12:48:59 -0300 | [diff] [blame] | 269 | u32 status; |
| 270 | int ret = 0; |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 271 | |
Guennadi Liakhovetski | 5d28d52 | 2009-12-11 11:15:05 -0300 | [diff] [blame] | 272 | /* |
| 273 | * The hardware is _very_ picky about this sequence. Especially |
Magnus Damm | 7a1a816 | 2008-12-18 12:50:30 -0300 | [diff] [blame] | 274 | * the CEU_CETCR_MAGIC value. It seems like we need to acknowledge |
| 275 | * several not-so-well documented interrupt sources in CETCR. |
| 276 | */ |
Kuninori Morimoto | 5cf93f1 | 2009-10-05 12:48:59 -0300 | [diff] [blame] | 277 | ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) & ~CEU_CEIER_MASK); |
| 278 | status = ceu_read(pcdev, CETCR); |
| 279 | ceu_write(pcdev, CETCR, ~status & CEU_CETCR_MAGIC); |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 280 | if (!pcdev->frozen) |
| 281 | ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) | CEU_CEIER_MASK); |
Magnus Damm | 7a1a816 | 2008-12-18 12:50:30 -0300 | [diff] [blame] | 282 | ceu_write(pcdev, CAPCR, ceu_read(pcdev, CAPCR) & ~CEU_CAPCR_CTNCP); |
| 283 | ceu_write(pcdev, CETCR, CEU_CETCR_MAGIC ^ CEU_CETCR_IGRW); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 284 | |
Kuninori Morimoto | 5cf93f1 | 2009-10-05 12:48:59 -0300 | [diff] [blame] | 285 | /* |
| 286 | * When a VBP interrupt occurs, a capture end interrupt does not occur |
| 287 | * and the image of that frame is not captured correctly. So, soft reset |
| 288 | * is needed here. |
| 289 | */ |
| 290 | if (status & CEU_CEIER_VBP) { |
| 291 | sh_mobile_ceu_soft_reset(pcdev); |
| 292 | ret = -EIO; |
| 293 | } |
| 294 | |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 295 | if (pcdev->frozen) { |
| 296 | complete(&pcdev->complete); |
| 297 | return ret; |
| 298 | } |
| 299 | |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 300 | if (!pcdev->active) |
Kuninori Morimoto | 5cf93f1 | 2009-10-05 12:48:59 -0300 | [diff] [blame] | 301 | return ret; |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 302 | |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 303 | if (V4L2_FIELD_INTERLACED_BT == pcdev->field) { |
| 304 | top1 = CDBYR; |
| 305 | top2 = CDBCR; |
| 306 | bottom1 = CDAYR; |
| 307 | bottom2 = CDACR; |
| 308 | } else { |
| 309 | top1 = CDAYR; |
| 310 | top2 = CDACR; |
| 311 | bottom1 = CDBYR; |
| 312 | bottom2 = CDBCR; |
| 313 | } |
| 314 | |
Pawel Osciak | d6db5bf | 2011-03-14 10:38:23 -0300 | [diff] [blame] | 315 | phys_addr_top = vb2_dma_contig_plane_paddr(pcdev->active, 0); |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 316 | |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 317 | ceu_write(pcdev, top1, phys_addr_top); |
| 318 | if (V4L2_FIELD_NONE != pcdev->field) { |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 319 | phys_addr_bottom = phys_addr_top + icd->user_width; |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 320 | ceu_write(pcdev, bottom1, phys_addr_bottom); |
Kuninori Morimoto | ccab8a2 | 2008-12-18 12:51:21 -0300 | [diff] [blame] | 321 | } |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 322 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 323 | switch (icd->current_fmt->host_fmt->fourcc) { |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 324 | case V4L2_PIX_FMT_NV12: |
| 325 | case V4L2_PIX_FMT_NV21: |
Magnus Damm | 9e4a56d | 2008-12-18 12:45:33 -0300 | [diff] [blame] | 326 | case V4L2_PIX_FMT_NV16: |
| 327 | case V4L2_PIX_FMT_NV61: |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 328 | phys_addr_top += icd->user_width * |
| 329 | icd->user_height; |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 330 | ceu_write(pcdev, top2, phys_addr_top); |
| 331 | if (V4L2_FIELD_NONE != pcdev->field) { |
| 332 | phys_addr_bottom = phys_addr_top + icd->user_width; |
| 333 | ceu_write(pcdev, bottom2, phys_addr_bottom); |
Kuninori Morimoto | ccab8a2 | 2008-12-18 12:51:21 -0300 | [diff] [blame] | 334 | } |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 335 | } |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 336 | |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 337 | ceu_write(pcdev, CAPSR, 0x1); /* start capture */ |
Kuninori Morimoto | 5cf93f1 | 2009-10-05 12:48:59 -0300 | [diff] [blame] | 338 | |
| 339 | return ret; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 340 | } |
| 341 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 342 | static int sh_mobile_ceu_videobuf_prepare(struct vb2_buffer *vb) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 343 | { |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 344 | struct soc_camera_device *icd = container_of(vb->vb2_queue, struct soc_camera_device, vb2_vidq); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 345 | struct sh_mobile_ceu_buffer *buf; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 346 | int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, |
| 347 | icd->current_fmt->host_fmt); |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 348 | unsigned long size; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 349 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 350 | if (bytes_per_line < 0) |
| 351 | return bytes_per_line; |
| 352 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 353 | buf = to_ceu_vb(vb); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 354 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 355 | 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] | 356 | vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0)); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 357 | |
| 358 | /* Added list head initialization on alloc */ |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 359 | WARN(!list_empty(&buf->queue), "Buffer %p on queue!\n", vb); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 360 | |
| 361 | #ifdef DEBUG |
Guennadi Liakhovetski | 5d28d52 | 2009-12-11 11:15:05 -0300 | [diff] [blame] | 362 | /* |
| 363 | * This can be useful if you want to see if we actually fill |
| 364 | * the buffer with something |
| 365 | */ |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 366 | if (vb2_plane_vaddr(vb, 0)) |
| 367 | memset(vb2_plane_vaddr(vb, 0), 0xaa, vb2_get_plane_payload(vb, 0)); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 368 | #endif |
| 369 | |
| 370 | BUG_ON(NULL == icd->current_fmt); |
| 371 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 372 | size = icd->user_height * bytes_per_line; |
| 373 | |
| 374 | if (vb2_plane_size(vb, 0) < size) { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 375 | dev_err(icd->parent, "Buffer too small (%lu < %lu)\n", |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 376 | vb2_plane_size(vb, 0), size); |
| 377 | return -ENOBUFS; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 378 | } |
| 379 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 380 | vb2_set_plane_payload(vb, 0, size); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 381 | |
| 382 | return 0; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 383 | } |
| 384 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 385 | static void sh_mobile_ceu_videobuf_queue(struct vb2_buffer *vb) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 386 | { |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 387 | 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] | 388 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 389 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 390 | struct sh_mobile_ceu_buffer *buf = to_ceu_vb(vb); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 391 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 392 | 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] | 393 | vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0)); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 394 | |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 395 | spin_lock_irq(&pcdev->lock); |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 396 | list_add_tail(&buf->queue, &pcdev->capture); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 397 | |
| 398 | if (!pcdev->active) { |
Kuninori Morimoto | 5cf93f1 | 2009-10-05 12:48:59 -0300 | [diff] [blame] | 399 | /* |
| 400 | * Because there were no active buffer at this moment, |
| 401 | * we are not interested in the return value of |
| 402 | * sh_mobile_ceu_capture here. |
| 403 | */ |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 404 | pcdev->active = vb; |
| 405 | sh_mobile_ceu_capture(pcdev); |
| 406 | } |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 407 | spin_unlock_irq(&pcdev->lock); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 408 | } |
| 409 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 410 | static void sh_mobile_ceu_videobuf_release(struct vb2_buffer *vb) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 411 | { |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 412 | 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] | 413 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 414 | struct sh_mobile_ceu_buffer *buf = to_ceu_vb(vb); |
Guennadi Liakhovetski | cca0e549 | 2009-08-25 11:46:51 -0300 | [diff] [blame] | 415 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Guennadi Liakhovetski | cca0e549 | 2009-08-25 11:46:51 -0300 | [diff] [blame] | 416 | |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 417 | spin_lock_irq(&pcdev->lock); |
Guennadi Liakhovetski | cca0e549 | 2009-08-25 11:46:51 -0300 | [diff] [blame] | 418 | |
| 419 | if (pcdev->active == vb) { |
| 420 | /* disable capture (release DMA buffer), reset */ |
| 421 | ceu_write(pcdev, CAPSR, 1 << 16); |
| 422 | pcdev->active = NULL; |
| 423 | } |
| 424 | |
Guennadi Liakhovetski | cb74cf5 | 2011-07-04 12:15:14 -0300 | [diff] [blame] | 425 | /* |
| 426 | * Doesn't hurt also if the list is empty, but it hurts, if queuing the |
| 427 | * buffer failed, and .buf_init() hasn't been called |
| 428 | */ |
| 429 | if (buf->queue.next) |
| 430 | list_del_init(&buf->queue); |
Guennadi Liakhovetski | cca0e549 | 2009-08-25 11:46:51 -0300 | [diff] [blame] | 431 | |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 432 | spin_unlock_irq(&pcdev->lock); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 433 | } |
| 434 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 435 | static int sh_mobile_ceu_videobuf_init(struct vb2_buffer *vb) |
| 436 | { |
| 437 | /* This is for locking debugging only */ |
| 438 | INIT_LIST_HEAD(&to_ceu_vb(vb)->queue); |
| 439 | return 0; |
| 440 | } |
| 441 | |
Guennadi Liakhovetski | 066f786 | 2011-03-24 12:51:07 -0300 | [diff] [blame] | 442 | static int sh_mobile_ceu_stop_streaming(struct vb2_queue *q) |
| 443 | { |
| 444 | 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] | 445 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | 066f786 | 2011-03-24 12:51:07 -0300 | [diff] [blame] | 446 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
| 447 | struct list_head *buf_head, *tmp; |
Guennadi Liakhovetski | 066f786 | 2011-03-24 12:51:07 -0300 | [diff] [blame] | 448 | |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 449 | spin_lock_irq(&pcdev->lock); |
Guennadi Liakhovetski | 066f786 | 2011-03-24 12:51:07 -0300 | [diff] [blame] | 450 | |
| 451 | pcdev->active = NULL; |
| 452 | |
| 453 | list_for_each_safe(buf_head, tmp, &pcdev->capture) |
| 454 | list_del_init(buf_head); |
| 455 | |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 456 | spin_unlock_irq(&pcdev->lock); |
Guennadi Liakhovetski | 066f786 | 2011-03-24 12:51:07 -0300 | [diff] [blame] | 457 | |
| 458 | return sh_mobile_ceu_soft_reset(pcdev); |
| 459 | } |
| 460 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 461 | static struct vb2_ops sh_mobile_ceu_videobuf_ops = { |
| 462 | .queue_setup = sh_mobile_ceu_videobuf_setup, |
| 463 | .buf_prepare = sh_mobile_ceu_videobuf_prepare, |
| 464 | .buf_queue = sh_mobile_ceu_videobuf_queue, |
| 465 | .buf_cleanup = sh_mobile_ceu_videobuf_release, |
| 466 | .buf_init = sh_mobile_ceu_videobuf_init, |
| 467 | .wait_prepare = soc_camera_unlock, |
| 468 | .wait_finish = soc_camera_lock, |
Guennadi Liakhovetski | 066f786 | 2011-03-24 12:51:07 -0300 | [diff] [blame] | 469 | .stop_streaming = sh_mobile_ceu_stop_streaming, |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 470 | }; |
| 471 | |
| 472 | static irqreturn_t sh_mobile_ceu_irq(int irq, void *data) |
| 473 | { |
| 474 | struct sh_mobile_ceu_dev *pcdev = data; |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 475 | struct vb2_buffer *vb; |
| 476 | int ret; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 477 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 478 | spin_lock(&pcdev->lock); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 479 | |
| 480 | vb = pcdev->active; |
Guennadi Liakhovetski | cca0e549 | 2009-08-25 11:46:51 -0300 | [diff] [blame] | 481 | if (!vb) |
| 482 | /* Stale interrupt from a released buffer */ |
| 483 | goto out; |
| 484 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 485 | list_del_init(&to_ceu_vb(vb)->queue); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 486 | |
| 487 | if (!list_empty(&pcdev->capture)) |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 488 | pcdev->active = &list_entry(pcdev->capture.next, |
| 489 | struct sh_mobile_ceu_buffer, queue)->vb; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 490 | else |
| 491 | pcdev->active = NULL; |
| 492 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 493 | ret = sh_mobile_ceu_capture(pcdev); |
| 494 | do_gettimeofday(&vb->v4l2_buf.timestamp); |
| 495 | if (!ret) { |
| 496 | vb->v4l2_buf.field = pcdev->field; |
| 497 | vb->v4l2_buf.sequence = pcdev->sequence++; |
| 498 | } |
| 499 | 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] | 500 | |
| 501 | out: |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 502 | spin_unlock(&pcdev->lock); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 503 | |
| 504 | return IRQ_HANDLED; |
| 505 | } |
| 506 | |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 507 | static struct v4l2_subdev *find_csi2(struct sh_mobile_ceu_dev *pcdev) |
| 508 | { |
| 509 | struct v4l2_subdev *sd; |
| 510 | |
| 511 | if (!pcdev->csi2_pdev) |
| 512 | return NULL; |
| 513 | |
| 514 | v4l2_device_for_each_subdev(sd, &pcdev->ici.v4l2_dev) |
| 515 | if (&pcdev->csi2_pdev->dev == v4l2_get_subdevdata(sd)) |
| 516 | return sd; |
| 517 | |
| 518 | return NULL; |
| 519 | } |
| 520 | |
Guennadi Liakhovetski | 1c3bb74 | 2008-12-18 12:28:54 -0300 | [diff] [blame] | 521 | /* Called with .video_lock held */ |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 522 | static int sh_mobile_ceu_add_device(struct soc_camera_device *icd) |
| 523 | { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 524 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 525 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 526 | struct v4l2_subdev *csi2_sd; |
Guennadi Liakhovetski | 6ed7c03 | 2009-12-11 11:15:06 -0300 | [diff] [blame] | 527 | int ret; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 528 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 529 | if (pcdev->icd) |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 530 | return -EBUSY; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 531 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 532 | dev_info(icd->parent, |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 533 | "SuperH Mobile CEU driver attached to camera %d\n", |
| 534 | icd->devnum); |
| 535 | |
Guennadi Liakhovetski | a79aebf | 2009-09-25 13:36:51 +0900 | [diff] [blame] | 536 | pm_runtime_get_sync(ici->v4l2_dev.dev); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 537 | |
Guennadi Liakhovetski | 6ed7c03 | 2009-12-11 11:15:06 -0300 | [diff] [blame] | 538 | ret = sh_mobile_ceu_soft_reset(pcdev); |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 539 | |
| 540 | csi2_sd = find_csi2(pcdev); |
| 541 | |
| 542 | ret = v4l2_subdev_call(csi2_sd, core, s_power, 1); |
| 543 | if (ret != -ENODEV && ret != -ENOIOCTLCMD && ret < 0) { |
| 544 | pm_runtime_put_sync(ici->v4l2_dev.dev); |
| 545 | } else { |
Guennadi Liakhovetski | 6ed7c03 | 2009-12-11 11:15:06 -0300 | [diff] [blame] | 546 | pcdev->icd = icd; |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 547 | ret = 0; |
| 548 | } |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 549 | |
Guennadi Liakhovetski | 6ed7c03 | 2009-12-11 11:15:06 -0300 | [diff] [blame] | 550 | return ret; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 551 | } |
| 552 | |
Guennadi Liakhovetski | 1c3bb74 | 2008-12-18 12:28:54 -0300 | [diff] [blame] | 553 | /* Called with .video_lock held */ |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 554 | static void sh_mobile_ceu_remove_device(struct soc_camera_device *icd) |
| 555 | { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 556 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 557 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 558 | struct v4l2_subdev *csi2_sd = find_csi2(pcdev); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 559 | |
| 560 | BUG_ON(icd != pcdev->icd); |
| 561 | |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 562 | v4l2_subdev_call(csi2_sd, core, s_power, 0); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 563 | /* disable capture, disable interrupts */ |
| 564 | ceu_write(pcdev, CEIER, 0); |
Kuninori Morimoto | b1de7ae | 2009-10-05 12:48:20 -0300 | [diff] [blame] | 565 | sh_mobile_ceu_soft_reset(pcdev); |
Magnus Damm | 51354cc | 2008-10-16 19:51:20 -0300 | [diff] [blame] | 566 | |
| 567 | /* make sure active buffer is canceled */ |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 568 | spin_lock_irq(&pcdev->lock); |
Magnus Damm | 51354cc | 2008-10-16 19:51:20 -0300 | [diff] [blame] | 569 | if (pcdev->active) { |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 570 | list_del_init(&to_ceu_vb(pcdev->active)->queue); |
| 571 | vb2_buffer_done(pcdev->active, VB2_BUF_STATE_ERROR); |
Magnus Damm | 51354cc | 2008-10-16 19:51:20 -0300 | [diff] [blame] | 572 | pcdev->active = NULL; |
| 573 | } |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 574 | spin_unlock_irq(&pcdev->lock); |
Magnus Damm | 51354cc | 2008-10-16 19:51:20 -0300 | [diff] [blame] | 575 | |
Guennadi Liakhovetski | a79aebf | 2009-09-25 13:36:51 +0900 | [diff] [blame] | 576 | pm_runtime_put_sync(ici->v4l2_dev.dev); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 577 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 578 | dev_info(icd->parent, |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 579 | "SuperH Mobile CEU driver detached from camera %d\n", |
| 580 | icd->devnum); |
| 581 | |
| 582 | pcdev->icd = NULL; |
| 583 | } |
| 584 | |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 585 | /* |
| 586 | * See chapter 29.4.12 "Capture Filter Control Register (CFLCR)" |
| 587 | * in SH7722 Hardware Manual |
| 588 | */ |
| 589 | static unsigned int size_dst(unsigned int src, unsigned int scale) |
| 590 | { |
| 591 | unsigned int mant_pre = scale >> 12; |
| 592 | if (!src || !scale) |
| 593 | return src; |
| 594 | return ((mant_pre + 2 * (src - 1)) / (2 * mant_pre) - 1) * |
| 595 | mant_pre * 4096 / scale + 1; |
| 596 | } |
| 597 | |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 598 | static u16 calc_scale(unsigned int src, unsigned int *dst) |
| 599 | { |
| 600 | u16 scale; |
| 601 | |
| 602 | if (src == *dst) |
| 603 | return 0; |
| 604 | |
| 605 | scale = (src * 4096 / *dst) & ~7; |
| 606 | |
| 607 | while (scale > 4096 && size_dst(src, scale) < *dst) |
| 608 | scale -= 8; |
| 609 | |
| 610 | *dst = size_dst(src, scale); |
| 611 | |
| 612 | return scale; |
| 613 | } |
| 614 | |
| 615 | /* rect is guaranteed to not exceed the scaled camera rectangle */ |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 616 | static void sh_mobile_ceu_set_rect(struct soc_camera_device *icd) |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 617 | { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 618 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 619 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
| 620 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 621 | unsigned int height, width, cdwdr_width, in_width, in_height; |
| 622 | unsigned int left_offset, top_offset; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 623 | u32 camor; |
| 624 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 625 | dev_geo(icd->parent, "Crop %ux%u@%u:%u\n", |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 626 | icd->user_width, icd->user_height, cam->ceu_left, cam->ceu_top); |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 627 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 628 | left_offset = cam->ceu_left; |
| 629 | top_offset = cam->ceu_top; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 630 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 631 | /* CEU cropping (CFSZR) is applied _after_ the scaling filter (CFLCR) */ |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 632 | if (pcdev->image_mode) { |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 633 | in_width = cam->width; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 634 | if (!pcdev->is_16bit) { |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 635 | in_width *= 2; |
| 636 | left_offset *= 2; |
| 637 | } |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 638 | width = icd->user_width; |
| 639 | cdwdr_width = icd->user_width; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 640 | } else { |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 641 | int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 642 | icd->current_fmt->host_fmt); |
| 643 | unsigned int w_factor; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 644 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 645 | width = icd->user_width; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 646 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 647 | switch (icd->current_fmt->host_fmt->packing) { |
| 648 | case SOC_MBUS_PACKING_2X8_PADHI: |
| 649 | w_factor = 2; |
| 650 | break; |
| 651 | default: |
| 652 | w_factor = 1; |
| 653 | } |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 654 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 655 | in_width = cam->width * w_factor; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 656 | left_offset = left_offset * w_factor; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 657 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 658 | if (bytes_per_line < 0) |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 659 | cdwdr_width = icd->user_width; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 660 | else |
| 661 | cdwdr_width = bytes_per_line; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 662 | } |
| 663 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 664 | height = icd->user_height; |
| 665 | in_height = cam->height; |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 666 | if (V4L2_FIELD_NONE != pcdev->field) { |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 667 | height /= 2; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 668 | in_height /= 2; |
| 669 | top_offset /= 2; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 670 | cdwdr_width *= 2; |
| 671 | } |
| 672 | |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 673 | /* CSI2 special configuration */ |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 674 | if (pcdev->pdata->csi2) { |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 675 | in_width = ((in_width - 2) * 2); |
| 676 | left_offset *= 2; |
| 677 | } |
| 678 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 679 | /* Set CAMOR, CAPWR, CFSZR, take care of CDWDR */ |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 680 | camor = left_offset | (top_offset << 16); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 681 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 682 | dev_geo(icd->parent, |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 683 | "CAMOR 0x%x, CAPWR 0x%x, CFSZR 0x%x, CDWDR 0x%x\n", camor, |
| 684 | (in_height << 16) | in_width, (height << 16) | width, |
| 685 | cdwdr_width); |
| 686 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 687 | ceu_write(pcdev, CAMOR, camor); |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 688 | ceu_write(pcdev, CAPWR, (in_height << 16) | in_width); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 689 | ceu_write(pcdev, CFSZR, (height << 16) | width); |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 690 | ceu_write(pcdev, CDWDR, cdwdr_width); |
| 691 | } |
| 692 | |
| 693 | static u32 capture_save_reset(struct sh_mobile_ceu_dev *pcdev) |
| 694 | { |
| 695 | u32 capsr = ceu_read(pcdev, CAPSR); |
| 696 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset, stop capture */ |
| 697 | return capsr; |
| 698 | } |
| 699 | |
| 700 | static void capture_restore(struct sh_mobile_ceu_dev *pcdev, u32 capsr) |
| 701 | { |
| 702 | unsigned long timeout = jiffies + 10 * HZ; |
| 703 | |
| 704 | /* |
| 705 | * Wait until the end of the current frame. It can take a long time, |
| 706 | * but if it has been aborted by a CAPSR reset, it shoule exit sooner. |
| 707 | */ |
| 708 | while ((ceu_read(pcdev, CSTSR) & 1) && time_before(jiffies, timeout)) |
| 709 | msleep(1); |
| 710 | |
| 711 | if (time_after(jiffies, timeout)) { |
| 712 | dev_err(pcdev->ici.v4l2_dev.dev, |
| 713 | "Timeout waiting for frame end! Interface problem?\n"); |
| 714 | return; |
| 715 | } |
| 716 | |
| 717 | /* Wait until reset clears, this shall not hang... */ |
| 718 | while (ceu_read(pcdev, CAPSR) & (1 << 16)) |
| 719 | udelay(10); |
| 720 | |
| 721 | /* Anything to restore? */ |
| 722 | if (capsr & ~(1 << 16)) |
| 723 | ceu_write(pcdev, CAPSR, capsr); |
| 724 | } |
| 725 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 726 | /* Capture is not running, no interrupts, no locking needed */ |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 727 | static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd, |
| 728 | __u32 pixfmt) |
| 729 | { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 730 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 731 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 732 | int ret; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 733 | unsigned long camera_flags, common_flags, value; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 734 | int yuv_lineskip; |
| 735 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
| 736 | u32 capsr = capture_save_reset(pcdev); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 737 | |
| 738 | camera_flags = icd->ops->query_bus_param(icd); |
| 739 | common_flags = soc_camera_bus_param_compatible(camera_flags, |
Kuninori Morimoto | c354b40 | 2009-02-23 12:12:58 -0300 | [diff] [blame] | 740 | make_bus_param(pcdev)); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 741 | if (!common_flags) |
| 742 | return -EINVAL; |
| 743 | |
Kuninori Morimoto | 85dc1cf | 2009-12-11 11:53:54 -0300 | [diff] [blame] | 744 | /* Make choises, based on platform preferences */ |
| 745 | if ((common_flags & SOCAM_HSYNC_ACTIVE_HIGH) && |
| 746 | (common_flags & SOCAM_HSYNC_ACTIVE_LOW)) { |
| 747 | if (pcdev->pdata->flags & SH_CEU_FLAG_HSYNC_LOW) |
| 748 | common_flags &= ~SOCAM_HSYNC_ACTIVE_HIGH; |
| 749 | else |
| 750 | common_flags &= ~SOCAM_HSYNC_ACTIVE_LOW; |
| 751 | } |
| 752 | |
| 753 | if ((common_flags & SOCAM_VSYNC_ACTIVE_HIGH) && |
| 754 | (common_flags & SOCAM_VSYNC_ACTIVE_LOW)) { |
| 755 | if (pcdev->pdata->flags & SH_CEU_FLAG_VSYNC_LOW) |
| 756 | common_flags &= ~SOCAM_VSYNC_ACTIVE_HIGH; |
| 757 | else |
| 758 | common_flags &= ~SOCAM_VSYNC_ACTIVE_LOW; |
| 759 | } |
| 760 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 761 | ret = icd->ops->set_bus_param(icd, common_flags); |
| 762 | if (ret < 0) |
| 763 | return ret; |
| 764 | |
| 765 | switch (common_flags & SOCAM_DATAWIDTH_MASK) { |
| 766 | case SOCAM_DATAWIDTH_8: |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 767 | pcdev->is_16bit = 0; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 768 | break; |
| 769 | case SOCAM_DATAWIDTH_16: |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 770 | pcdev->is_16bit = 1; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 771 | break; |
| 772 | default: |
| 773 | return -EINVAL; |
| 774 | } |
| 775 | |
| 776 | ceu_write(pcdev, CRCNTR, 0); |
| 777 | ceu_write(pcdev, CRCMPR, 0); |
| 778 | |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 779 | value = 0x00000010; /* data fetch by default */ |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 780 | yuv_lineskip = 0; |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 781 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 782 | switch (icd->current_fmt->host_fmt->fourcc) { |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 783 | case V4L2_PIX_FMT_NV12: |
| 784 | case V4L2_PIX_FMT_NV21: |
| 785 | yuv_lineskip = 1; /* skip for NV12/21, no skip for NV16/61 */ |
Magnus Damm | 9e4a56d | 2008-12-18 12:45:33 -0300 | [diff] [blame] | 786 | /* fall-through */ |
| 787 | case V4L2_PIX_FMT_NV16: |
| 788 | case V4L2_PIX_FMT_NV61: |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 789 | switch (cam->code) { |
Guennadi Liakhovetski | ace6e97 | 2010-07-22 16:52:51 -0300 | [diff] [blame] | 790 | case V4L2_MBUS_FMT_UYVY8_2X8: |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 791 | value = 0x00000000; /* Cb0, Y0, Cr0, Y1 */ |
| 792 | break; |
Guennadi Liakhovetski | ace6e97 | 2010-07-22 16:52:51 -0300 | [diff] [blame] | 793 | case V4L2_MBUS_FMT_VYUY8_2X8: |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 794 | value = 0x00000100; /* Cr0, Y0, Cb0, Y1 */ |
| 795 | break; |
Guennadi Liakhovetski | ace6e97 | 2010-07-22 16:52:51 -0300 | [diff] [blame] | 796 | case V4L2_MBUS_FMT_YUYV8_2X8: |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 797 | value = 0x00000200; /* Y0, Cb0, Y1, Cr0 */ |
| 798 | break; |
Guennadi Liakhovetski | ace6e97 | 2010-07-22 16:52:51 -0300 | [diff] [blame] | 799 | case V4L2_MBUS_FMT_YVYU8_2X8: |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 800 | value = 0x00000300; /* Y0, Cr0, Y1, Cb0 */ |
| 801 | break; |
| 802 | default: |
| 803 | BUG(); |
| 804 | } |
| 805 | } |
| 806 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 807 | if (icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_NV21 || |
| 808 | icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_NV61) |
Magnus Damm | 9e4a56d | 2008-12-18 12:45:33 -0300 | [diff] [blame] | 809 | value ^= 0x00000100; /* swap U, V to change from NV1x->NVx1 */ |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 810 | |
Magnus Damm | 7a1a816 | 2008-12-18 12:50:30 -0300 | [diff] [blame] | 811 | value |= common_flags & SOCAM_VSYNC_ACTIVE_LOW ? 1 << 1 : 0; |
| 812 | value |= common_flags & SOCAM_HSYNC_ACTIVE_LOW ? 1 << 0 : 0; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 813 | value |= pcdev->is_16bit ? 1 << 12 : 0; |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 814 | |
| 815 | /* CSI2 mode */ |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 816 | if (pcdev->pdata->csi2) |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 817 | value |= 3 << 12; |
| 818 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 819 | ceu_write(pcdev, CAMCR, value); |
| 820 | |
| 821 | ceu_write(pcdev, CAPCR, 0x00300000); |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 822 | |
| 823 | switch (pcdev->field) { |
| 824 | case V4L2_FIELD_INTERLACED_TB: |
| 825 | value = 0x101; |
| 826 | break; |
| 827 | case V4L2_FIELD_INTERLACED_BT: |
| 828 | value = 0x102; |
| 829 | break; |
| 830 | default: |
| 831 | value = 0; |
| 832 | break; |
| 833 | } |
| 834 | ceu_write(pcdev, CAIFR, value); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 835 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 836 | sh_mobile_ceu_set_rect(icd); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 837 | mdelay(1); |
| 838 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 839 | dev_geo(icd->parent, "CFLCR 0x%x\n", pcdev->cflcr); |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 840 | ceu_write(pcdev, CFLCR, pcdev->cflcr); |
Magnus Damm | dd54203 | 2008-10-16 19:50:22 -0300 | [diff] [blame] | 841 | |
Guennadi Liakhovetski | 5d28d52 | 2009-12-11 11:15:05 -0300 | [diff] [blame] | 842 | /* |
| 843 | * A few words about byte order (observed in Big Endian mode) |
Magnus Damm | dd54203 | 2008-10-16 19:50:22 -0300 | [diff] [blame] | 844 | * |
| 845 | * In data fetch mode bytes are received in chunks of 8 bytes. |
| 846 | * D0, D1, D2, D3, D4, D5, D6, D7 (D0 received first) |
| 847 | * |
| 848 | * The data is however by default written to memory in reverse order: |
| 849 | * D7, D6, D5, D4, D3, D2, D1, D0 (D7 written to lowest byte) |
| 850 | * |
| 851 | * The lowest three bits of CDOCR allows us to do swapping, |
Magnus Damm | 2c0a072 | 2008-10-16 19:50:56 -0300 | [diff] [blame] | 852 | * using 7 we swap the data bytes to match the incoming order: |
| 853 | * D0, D1, D2, D3, D4, D5, D6, D7 |
Magnus Damm | dd54203 | 2008-10-16 19:50:22 -0300 | [diff] [blame] | 854 | */ |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 855 | value = 0x00000017; |
| 856 | if (yuv_lineskip) |
| 857 | value &= ~0x00000010; /* convert 4:2:2 -> 4:2:0 */ |
| 858 | |
| 859 | ceu_write(pcdev, CDOCR, value); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 860 | ceu_write(pcdev, CFWCR, 0); /* keep "datafetch firewall" disabled */ |
| 861 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 862 | dev_dbg(icd->parent, "S_FMT successful for %c%c%c%c %ux%u\n", |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 863 | pixfmt & 0xff, (pixfmt >> 8) & 0xff, |
| 864 | (pixfmt >> 16) & 0xff, (pixfmt >> 24) & 0xff, |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 865 | icd->user_width, icd->user_height); |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 866 | |
| 867 | capture_restore(pcdev, capsr); |
| 868 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 869 | /* not in bundle mode: skip CBDSR, CDAYR2, CDACR2, CDBYR2, CDBCR2 */ |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 870 | return 0; |
| 871 | } |
| 872 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 873 | static int sh_mobile_ceu_try_bus_param(struct soc_camera_device *icd, |
| 874 | unsigned char buswidth) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 875 | { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 876 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 877 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
| 878 | unsigned long camera_flags, common_flags; |
| 879 | |
| 880 | camera_flags = icd->ops->query_bus_param(icd); |
| 881 | common_flags = soc_camera_bus_param_compatible(camera_flags, |
Kuninori Morimoto | c354b40 | 2009-02-23 12:12:58 -0300 | [diff] [blame] | 882 | make_bus_param(pcdev)); |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 883 | if (!common_flags || buswidth > 16 || |
| 884 | (buswidth > 8 && !(common_flags & SOCAM_DATAWIDTH_16))) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 885 | return -EINVAL; |
| 886 | |
| 887 | return 0; |
| 888 | } |
| 889 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 890 | static const struct soc_mbus_pixelfmt sh_mobile_ceu_formats[] = { |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 891 | { |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 892 | .fourcc = V4L2_PIX_FMT_NV12, |
| 893 | .name = "NV12", |
| 894 | .bits_per_sample = 12, |
| 895 | .packing = SOC_MBUS_PACKING_NONE, |
| 896 | .order = SOC_MBUS_ORDER_LE, |
| 897 | }, { |
| 898 | .fourcc = V4L2_PIX_FMT_NV21, |
| 899 | .name = "NV21", |
| 900 | .bits_per_sample = 12, |
| 901 | .packing = SOC_MBUS_PACKING_NONE, |
| 902 | .order = SOC_MBUS_ORDER_LE, |
| 903 | }, { |
| 904 | .fourcc = V4L2_PIX_FMT_NV16, |
| 905 | .name = "NV16", |
| 906 | .bits_per_sample = 16, |
| 907 | .packing = SOC_MBUS_PACKING_NONE, |
| 908 | .order = SOC_MBUS_ORDER_LE, |
| 909 | }, { |
| 910 | .fourcc = V4L2_PIX_FMT_NV61, |
| 911 | .name = "NV61", |
| 912 | .bits_per_sample = 16, |
| 913 | .packing = SOC_MBUS_PACKING_NONE, |
| 914 | .order = SOC_MBUS_ORDER_LE, |
Magnus Damm | 9e4a56d | 2008-12-18 12:45:33 -0300 | [diff] [blame] | 915 | }, |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 916 | }; |
| 917 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 918 | /* This will be corrected as we get more formats */ |
| 919 | static bool sh_mobile_ceu_packing_supported(const struct soc_mbus_pixelfmt *fmt) |
| 920 | { |
| 921 | return fmt->packing == SOC_MBUS_PACKING_NONE || |
| 922 | (fmt->bits_per_sample == 8 && |
| 923 | fmt->packing == SOC_MBUS_PACKING_2X8_PADHI) || |
| 924 | (fmt->bits_per_sample > 8 && |
| 925 | fmt->packing == SOC_MBUS_PACKING_EXTEND16); |
| 926 | } |
| 927 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 928 | static int client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect); |
| 929 | |
Hans Verkuil | 3805f20 | 2010-05-08 17:55:00 -0300 | [diff] [blame] | 930 | 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] | 931 | struct soc_camera_format_xlate *xlate) |
| 932 | { |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 933 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 934 | struct device *dev = icd->parent; |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 935 | struct soc_camera_host *ici = to_soc_camera_host(dev); |
| 936 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 937 | int ret, k, n; |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 938 | int formats = 0; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 939 | struct sh_mobile_ceu_cam *cam; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 940 | enum v4l2_mbus_pixelcode code; |
| 941 | const struct soc_mbus_pixelfmt *fmt; |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 942 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 943 | ret = v4l2_subdev_call(sd, video, enum_mbus_fmt, idx, &code); |
| 944 | if (ret < 0) |
| 945 | /* No more formats */ |
| 946 | return 0; |
| 947 | |
| 948 | fmt = soc_mbus_get_fmtdesc(code); |
| 949 | if (!fmt) { |
Guennadi Liakhovetski | d2dcad4 | 2011-05-18 06:49:54 -0300 | [diff] [blame] | 950 | dev_warn(dev, "unsupported format code #%u: %d\n", idx, code); |
| 951 | return 0; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 952 | } |
| 953 | |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 954 | if (!pcdev->pdata->csi2) { |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 955 | ret = sh_mobile_ceu_try_bus_param(icd, fmt->bits_per_sample); |
| 956 | if (ret < 0) |
| 957 | return 0; |
| 958 | } |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 959 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 960 | if (!icd->host_priv) { |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 961 | struct v4l2_mbus_framefmt mf; |
| 962 | struct v4l2_rect rect; |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 963 | int shift = 0; |
| 964 | |
| 965 | /* FIXME: subwindow is lost between close / open */ |
| 966 | |
| 967 | /* Cache current client geometry */ |
| 968 | ret = client_g_rect(sd, &rect); |
| 969 | if (ret < 0) |
| 970 | return ret; |
| 971 | |
| 972 | /* First time */ |
| 973 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); |
| 974 | if (ret < 0) |
| 975 | return ret; |
| 976 | |
| 977 | while ((mf.width > 2560 || mf.height > 1920) && shift < 4) { |
| 978 | /* Try 2560x1920, 1280x960, 640x480, 320x240 */ |
| 979 | mf.width = 2560 >> shift; |
| 980 | mf.height = 1920 >> shift; |
Guennadi Liakhovetski | 24105eb | 2011-03-23 05:41:28 -0300 | [diff] [blame] | 981 | ret = v4l2_device_call_until_err(sd->v4l2_dev, (long)icd, video, |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 982 | s_mbus_fmt, &mf); |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 983 | if (ret < 0) |
| 984 | return ret; |
| 985 | shift++; |
| 986 | } |
| 987 | |
| 988 | if (shift == 4) { |
| 989 | dev_err(dev, "Failed to configure the client below %ux%x\n", |
| 990 | mf.width, mf.height); |
| 991 | return -EIO; |
| 992 | } |
| 993 | |
| 994 | dev_geo(dev, "camera fmt %ux%u\n", mf.width, mf.height); |
| 995 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 996 | cam = kzalloc(sizeof(*cam), GFP_KERNEL); |
| 997 | if (!cam) |
| 998 | return -ENOMEM; |
| 999 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1000 | /* We are called with current camera crop, initialise subrect with it */ |
| 1001 | cam->rect = rect; |
| 1002 | cam->subrect = rect; |
| 1003 | |
| 1004 | cam->width = mf.width; |
| 1005 | cam->height = mf.height; |
| 1006 | |
| 1007 | cam->width = mf.width; |
| 1008 | cam->height = mf.height; |
| 1009 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1010 | icd->host_priv = cam; |
| 1011 | } else { |
| 1012 | cam = icd->host_priv; |
| 1013 | } |
| 1014 | |
Guennadi Liakhovetski | c8329ac | 2009-02-23 12:12:58 -0300 | [diff] [blame] | 1015 | /* Beginning of a pass */ |
| 1016 | if (!idx) |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1017 | cam->extra_fmt = NULL; |
Guennadi Liakhovetski | c8329ac | 2009-02-23 12:12:58 -0300 | [diff] [blame] | 1018 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1019 | switch (code) { |
Guennadi Liakhovetski | ace6e97 | 2010-07-22 16:52:51 -0300 | [diff] [blame] | 1020 | case V4L2_MBUS_FMT_UYVY8_2X8: |
| 1021 | case V4L2_MBUS_FMT_VYUY8_2X8: |
| 1022 | case V4L2_MBUS_FMT_YUYV8_2X8: |
| 1023 | case V4L2_MBUS_FMT_YVYU8_2X8: |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1024 | if (cam->extra_fmt) |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1025 | break; |
Guennadi Liakhovetski | c8329ac | 2009-02-23 12:12:58 -0300 | [diff] [blame] | 1026 | |
| 1027 | /* |
| 1028 | * Our case is simple so far: for any of the above four camera |
| 1029 | * formats we add all our four synthesized NV* formats, so, |
| 1030 | * just marking the device with a single flag suffices. If |
| 1031 | * the format generation rules are more complex, you would have |
| 1032 | * to actually hang your already added / counted formats onto |
| 1033 | * the host_priv pointer and check whether the format you're |
| 1034 | * going to add now is already there. |
| 1035 | */ |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1036 | cam->extra_fmt = sh_mobile_ceu_formats; |
Guennadi Liakhovetski | c8329ac | 2009-02-23 12:12:58 -0300 | [diff] [blame] | 1037 | |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 1038 | n = ARRAY_SIZE(sh_mobile_ceu_formats); |
| 1039 | formats += n; |
| 1040 | for (k = 0; xlate && k < n; k++) { |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1041 | xlate->host_fmt = &sh_mobile_ceu_formats[k]; |
| 1042 | xlate->code = code; |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 1043 | xlate++; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1044 | dev_dbg(dev, "Providing format %s using code %d\n", |
| 1045 | sh_mobile_ceu_formats[k].name, code); |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 1046 | } |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1047 | break; |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1048 | default: |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1049 | if (!sh_mobile_ceu_packing_supported(fmt)) |
| 1050 | return 0; |
| 1051 | } |
| 1052 | |
| 1053 | /* Generic pass-through */ |
| 1054 | formats++; |
| 1055 | if (xlate) { |
| 1056 | xlate->host_fmt = fmt; |
| 1057 | xlate->code = code; |
| 1058 | xlate++; |
| 1059 | dev_dbg(dev, "Providing format %s in pass-through mode\n", |
Guennadi Liakhovetski | e53a480 | 2010-06-18 04:20:56 -0300 | [diff] [blame] | 1060 | fmt->name); |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1061 | } |
| 1062 | |
| 1063 | return formats; |
| 1064 | } |
| 1065 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1066 | static void sh_mobile_ceu_put_formats(struct soc_camera_device *icd) |
| 1067 | { |
| 1068 | kfree(icd->host_priv); |
| 1069 | icd->host_priv = NULL; |
| 1070 | } |
| 1071 | |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1072 | /* 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] | 1073 | static bool is_smaller(struct v4l2_rect *r1, struct v4l2_rect *r2) |
| 1074 | { |
| 1075 | return r1->width < r2->width || r1->height < r2->height; |
| 1076 | } |
| 1077 | |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1078 | /* Check if r1 fails to cover r2 */ |
| 1079 | static bool is_inside(struct v4l2_rect *r1, struct v4l2_rect *r2) |
| 1080 | { |
| 1081 | return r1->left > r2->left || r1->top > r2->top || |
| 1082 | r1->left + r1->width < r2->left + r2->width || |
| 1083 | r1->top + r1->height < r2->top + r2->height; |
| 1084 | } |
| 1085 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1086 | static unsigned int scale_down(unsigned int size, unsigned int scale) |
| 1087 | { |
| 1088 | return (size * 4096 + scale / 2) / scale; |
| 1089 | } |
| 1090 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1091 | static unsigned int calc_generic_scale(unsigned int input, unsigned int output) |
| 1092 | { |
| 1093 | return (input * 4096 + output / 2) / output; |
| 1094 | } |
| 1095 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1096 | /* Get and store current client crop */ |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1097 | static int client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect) |
| 1098 | { |
| 1099 | struct v4l2_crop crop; |
| 1100 | struct v4l2_cropcap cap; |
| 1101 | int ret; |
| 1102 | |
| 1103 | crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 1104 | |
| 1105 | ret = v4l2_subdev_call(sd, video, g_crop, &crop); |
| 1106 | if (!ret) { |
| 1107 | *rect = crop.c; |
| 1108 | return ret; |
| 1109 | } |
| 1110 | |
| 1111 | /* Camera driver doesn't support .g_crop(), assume default rectangle */ |
| 1112 | cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 1113 | |
| 1114 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1115 | if (!ret) |
| 1116 | *rect = cap.defrect; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1117 | |
| 1118 | return ret; |
| 1119 | } |
| 1120 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1121 | /* Client crop has changed, update our sub-rectangle to remain within the area */ |
| 1122 | static void update_subrect(struct sh_mobile_ceu_cam *cam) |
| 1123 | { |
| 1124 | struct v4l2_rect *rect = &cam->rect, *subrect = &cam->subrect; |
| 1125 | |
| 1126 | if (rect->width < subrect->width) |
| 1127 | subrect->width = rect->width; |
| 1128 | |
| 1129 | if (rect->height < subrect->height) |
| 1130 | subrect->height = rect->height; |
| 1131 | |
| 1132 | if (rect->left > subrect->left) |
| 1133 | subrect->left = rect->left; |
| 1134 | else if (rect->left + rect->width > |
| 1135 | subrect->left + subrect->width) |
| 1136 | subrect->left = rect->left + rect->width - |
| 1137 | subrect->width; |
| 1138 | |
| 1139 | if (rect->top > subrect->top) |
| 1140 | subrect->top = rect->top; |
| 1141 | else if (rect->top + rect->height > |
| 1142 | subrect->top + subrect->height) |
| 1143 | subrect->top = rect->top + rect->height - |
| 1144 | subrect->height; |
| 1145 | } |
| 1146 | |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1147 | /* |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1148 | * The common for both scaling and cropping iterative approach is: |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1149 | * 1. try if the client can produce exactly what requested by the user |
| 1150 | * 2. if (1) failed, try to double the client image until we get one big enough |
| 1151 | * 3. if (2) failed, try to request the maximum image |
| 1152 | */ |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1153 | 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] | 1154 | struct v4l2_crop *cam_crop) |
| 1155 | { |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1156 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1157 | struct v4l2_rect *rect = &crop->c, *cam_rect = &cam_crop->c; |
| 1158 | struct device *dev = sd->v4l2_dev->dev; |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1159 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1160 | struct v4l2_cropcap cap; |
| 1161 | int ret; |
| 1162 | unsigned int width, height; |
| 1163 | |
| 1164 | v4l2_subdev_call(sd, video, s_crop, crop); |
| 1165 | ret = client_g_rect(sd, cam_rect); |
| 1166 | if (ret < 0) |
| 1167 | return ret; |
| 1168 | |
| 1169 | /* |
| 1170 | * Now cam_crop contains the current camera input rectangle, and it must |
| 1171 | * be within camera cropcap bounds |
| 1172 | */ |
| 1173 | if (!memcmp(rect, cam_rect, sizeof(*rect))) { |
| 1174 | /* Even if camera S_CROP failed, but camera rectangle matches */ |
Márton Németh | e26b314 | 2010-02-24 17:13:29 -0300 | [diff] [blame] | 1175 | 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] | 1176 | rect->width, rect->height, rect->left, rect->top); |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1177 | cam->rect = *cam_rect; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1178 | return 0; |
| 1179 | } |
| 1180 | |
| 1181 | /* Try to fix cropping, that camera hasn't managed to set */ |
Márton Németh | e26b314 | 2010-02-24 17:13:29 -0300 | [diff] [blame] | 1182 | 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] | 1183 | cam_rect->width, cam_rect->height, |
| 1184 | cam_rect->left, cam_rect->top, |
| 1185 | rect->width, rect->height, rect->left, rect->top); |
| 1186 | |
| 1187 | /* We need sensor maximum rectangle */ |
| 1188 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); |
| 1189 | if (ret < 0) |
| 1190 | return ret; |
| 1191 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1192 | /* Put user requested rectangle within sensor bounds */ |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1193 | soc_camera_limit_side(&rect->left, &rect->width, cap.bounds.left, 2, |
| 1194 | cap.bounds.width); |
| 1195 | soc_camera_limit_side(&rect->top, &rect->height, cap.bounds.top, 4, |
| 1196 | cap.bounds.height); |
| 1197 | |
| 1198 | /* |
| 1199 | * Popular special case - some cameras can only handle fixed sizes like |
| 1200 | * QVGA, VGA,... Take care to avoid infinite loop. |
| 1201 | */ |
| 1202 | width = max(cam_rect->width, 2); |
| 1203 | height = max(cam_rect->height, 2); |
| 1204 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1205 | /* |
| 1206 | * Loop as long as sensor is not covering the requested rectangle and |
| 1207 | * is still within its bounds |
| 1208 | */ |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1209 | while (!ret && (is_smaller(cam_rect, rect) || |
| 1210 | is_inside(cam_rect, rect)) && |
| 1211 | (cap.bounds.width > width || cap.bounds.height > height)) { |
| 1212 | |
| 1213 | width *= 2; |
| 1214 | height *= 2; |
| 1215 | |
| 1216 | cam_rect->width = width; |
| 1217 | cam_rect->height = height; |
| 1218 | |
| 1219 | /* |
| 1220 | * We do not know what capabilities the camera has to set up |
| 1221 | * left and top borders. We could try to be smarter in iterating |
| 1222 | * them, e.g., if camera current left is to the right of the |
| 1223 | * target left, set it to the middle point between the current |
| 1224 | * left and minimum left. But that would add too much |
| 1225 | * complexity: we would have to iterate each border separately. |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1226 | * Instead we just drop to the left and top bounds. |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1227 | */ |
| 1228 | if (cam_rect->left > rect->left) |
| 1229 | cam_rect->left = cap.bounds.left; |
| 1230 | |
| 1231 | if (cam_rect->left + cam_rect->width < rect->left + rect->width) |
| 1232 | cam_rect->width = rect->left + rect->width - |
| 1233 | cam_rect->left; |
| 1234 | |
| 1235 | if (cam_rect->top > rect->top) |
| 1236 | cam_rect->top = cap.bounds.top; |
| 1237 | |
| 1238 | if (cam_rect->top + cam_rect->height < rect->top + rect->height) |
| 1239 | cam_rect->height = rect->top + rect->height - |
| 1240 | cam_rect->top; |
| 1241 | |
| 1242 | v4l2_subdev_call(sd, video, s_crop, cam_crop); |
| 1243 | ret = client_g_rect(sd, cam_rect); |
Márton Németh | e26b314 | 2010-02-24 17:13:29 -0300 | [diff] [blame] | 1244 | 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] | 1245 | cam_rect->width, cam_rect->height, |
| 1246 | cam_rect->left, cam_rect->top); |
| 1247 | } |
| 1248 | |
| 1249 | /* S_CROP must not modify the rectangle */ |
| 1250 | if (is_smaller(cam_rect, rect) || is_inside(cam_rect, rect)) { |
| 1251 | /* |
| 1252 | * The camera failed to configure a suitable cropping, |
| 1253 | * we cannot use the current rectangle, set to max |
| 1254 | */ |
| 1255 | *cam_rect = cap.bounds; |
| 1256 | v4l2_subdev_call(sd, video, s_crop, cam_crop); |
| 1257 | ret = client_g_rect(sd, cam_rect); |
Márton Németh | e26b314 | 2010-02-24 17:13:29 -0300 | [diff] [blame] | 1258 | 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] | 1259 | cam_rect->width, cam_rect->height, |
| 1260 | cam_rect->left, cam_rect->top); |
| 1261 | } |
| 1262 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1263 | if (!ret) { |
| 1264 | cam->rect = *cam_rect; |
| 1265 | update_subrect(cam); |
| 1266 | } |
| 1267 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1268 | return ret; |
| 1269 | } |
| 1270 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1271 | /* Iterative s_mbus_fmt, also updates cached client crop on success */ |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1272 | static int client_s_fmt(struct soc_camera_device *icd, |
| 1273 | struct v4l2_mbus_framefmt *mf, bool ceu_can_scale) |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1274 | { |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1275 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1276 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1277 | struct device *dev = icd->parent; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1278 | unsigned int width = mf->width, height = mf->height, tmp_w, tmp_h; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1279 | unsigned int max_width, max_height; |
| 1280 | struct v4l2_cropcap cap; |
| 1281 | int ret; |
| 1282 | |
Guennadi Liakhovetski | 24105eb | 2011-03-23 05:41:28 -0300 | [diff] [blame] | 1283 | ret = v4l2_device_call_until_err(sd->v4l2_dev, (long)icd, video, |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 1284 | s_mbus_fmt, mf); |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1285 | if (ret < 0) |
| 1286 | return ret; |
| 1287 | |
| 1288 | dev_geo(dev, "camera scaled to %ux%u\n", mf->width, mf->height); |
| 1289 | |
| 1290 | if ((width == mf->width && height == mf->height) || !ceu_can_scale) |
| 1291 | goto update_cache; |
| 1292 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1293 | cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 1294 | |
| 1295 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); |
| 1296 | if (ret < 0) |
| 1297 | return ret; |
| 1298 | |
| 1299 | max_width = min(cap.bounds.width, 2560); |
| 1300 | max_height = min(cap.bounds.height, 1920); |
| 1301 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1302 | /* Camera set a format, but geometry is not precise, try to improve */ |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1303 | tmp_w = mf->width; |
| 1304 | tmp_h = mf->height; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1305 | |
| 1306 | /* width <= max_width && height <= max_height - guaranteed by try_fmt */ |
| 1307 | while ((width > tmp_w || height > tmp_h) && |
| 1308 | tmp_w < max_width && tmp_h < max_height) { |
| 1309 | tmp_w = min(2 * tmp_w, max_width); |
| 1310 | tmp_h = min(2 * tmp_h, max_height); |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1311 | mf->width = tmp_w; |
| 1312 | mf->height = tmp_h; |
Guennadi Liakhovetski | 24105eb | 2011-03-23 05:41:28 -0300 | [diff] [blame] | 1313 | ret = v4l2_device_call_until_err(sd->v4l2_dev, (long)icd, video, |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 1314 | s_mbus_fmt, mf); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1315 | dev_geo(dev, "Camera scaled to %ux%u\n", |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1316 | mf->width, mf->height); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1317 | if (ret < 0) { |
| 1318 | /* This shouldn't happen */ |
| 1319 | dev_err(dev, "Client failed to set format: %d\n", ret); |
| 1320 | return ret; |
| 1321 | } |
| 1322 | } |
| 1323 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1324 | update_cache: |
| 1325 | /* Update cache */ |
| 1326 | ret = client_g_rect(sd, &cam->rect); |
| 1327 | if (ret < 0) |
| 1328 | return ret; |
| 1329 | |
| 1330 | update_subrect(cam); |
| 1331 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1332 | return 0; |
| 1333 | } |
| 1334 | |
| 1335 | /** |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1336 | * @width - on output: user width, mapped back to input |
| 1337 | * @height - on output: user height, mapped back to input |
| 1338 | * @mf - in- / output camera output window |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1339 | */ |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1340 | static int client_scale(struct soc_camera_device *icd, |
| 1341 | struct v4l2_mbus_framefmt *mf, |
| 1342 | unsigned int *width, unsigned int *height, |
| 1343 | bool ceu_can_scale) |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1344 | { |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1345 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1346 | struct device *dev = icd->parent; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1347 | struct v4l2_mbus_framefmt mf_tmp = *mf; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1348 | unsigned int scale_h, scale_v; |
| 1349 | int ret; |
| 1350 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1351 | /* |
| 1352 | * 5. Apply iterative camera S_FMT for camera user window (also updates |
| 1353 | * client crop cache and the imaginary sub-rectangle). |
| 1354 | */ |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1355 | ret = client_s_fmt(icd, &mf_tmp, ceu_can_scale); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1356 | if (ret < 0) |
| 1357 | return ret; |
| 1358 | |
| 1359 | dev_geo(dev, "5: camera scaled to %ux%u\n", |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1360 | mf_tmp.width, mf_tmp.height); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1361 | |
| 1362 | /* 6. Retrieve camera output window (g_fmt) */ |
| 1363 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1364 | /* unneeded - it is already in "mf_tmp" */ |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1365 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1366 | /* 7. Calculate new client scales. */ |
| 1367 | scale_h = calc_generic_scale(cam->rect.width, mf_tmp.width); |
| 1368 | scale_v = calc_generic_scale(cam->rect.height, mf_tmp.height); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1369 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1370 | mf->width = mf_tmp.width; |
| 1371 | mf->height = mf_tmp.height; |
| 1372 | mf->colorspace = mf_tmp.colorspace; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1373 | |
| 1374 | /* |
| 1375 | * 8. Calculate new CEU crop - apply camera scales to previously |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1376 | * updated "effective" crop. |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1377 | */ |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1378 | *width = scale_down(cam->subrect.width, scale_h); |
| 1379 | *height = scale_down(cam->subrect.height, scale_v); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1380 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1381 | 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] | 1382 | |
| 1383 | return 0; |
| 1384 | } |
| 1385 | |
| 1386 | /* |
| 1387 | * CEU can scale and crop, but we don't want to waste bandwidth and kill the |
| 1388 | * framerate by always requesting the maximum image from the client. See |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 1389 | * Documentation/video4linux/sh_mobile_ceu_camera.txt for a description of |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1390 | * scaling and cropping algorithms and for the meaning of referenced here steps. |
| 1391 | */ |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 1392 | static int sh_mobile_ceu_set_crop(struct soc_camera_device *icd, |
Guennadi Liakhovetski | 08590b9 | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1393 | struct v4l2_crop *a) |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 1394 | { |
Guennadi Liakhovetski | 08590b9 | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1395 | struct v4l2_rect *rect = &a->c; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1396 | struct device *dev = icd->parent; |
| 1397 | struct soc_camera_host *ici = to_soc_camera_host(dev); |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1398 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Guennadi Liakhovetski | 08590b9 | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1399 | struct v4l2_crop cam_crop; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1400 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1401 | struct v4l2_rect *cam_rect = &cam_crop.c; |
Guennadi Liakhovetski | c9c1f1c | 2009-08-25 11:46:59 -0300 | [diff] [blame] | 1402 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1403 | struct v4l2_mbus_framefmt mf; |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1404 | 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] | 1405 | out_width, out_height; |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1406 | int interm_width, interm_height; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1407 | u32 capsr, cflcr; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1408 | int ret; |
| 1409 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1410 | dev_geo(dev, "S_CROP(%ux%u@%u:%u)\n", rect->width, rect->height, |
| 1411 | rect->left, rect->top); |
| 1412 | |
| 1413 | /* During camera cropping its output window can change too, stop CEU */ |
| 1414 | capsr = capture_save_reset(pcdev); |
| 1415 | dev_dbg(dev, "CAPSR 0x%x, CFLCR 0x%x\n", capsr, pcdev->cflcr); |
| 1416 | |
| 1417 | /* 1. - 2. Apply iterative camera S_CROP for new input window. */ |
| 1418 | ret = client_s_crop(icd, a, &cam_crop); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1419 | if (ret < 0) |
| 1420 | return ret; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1421 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1422 | 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] | 1423 | cam_rect->width, cam_rect->height, |
| 1424 | cam_rect->left, cam_rect->top); |
| 1425 | |
| 1426 | /* On success cam_crop contains current camera crop */ |
| 1427 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1428 | /* 3. Retrieve camera output window */ |
| 1429 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); |
| 1430 | if (ret < 0) |
| 1431 | return ret; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1432 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1433 | if (mf.width > 2560 || mf.height > 1920) |
| 1434 | return -EINVAL; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1435 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1436 | /* 4. Calculate camera scales */ |
| 1437 | scale_cam_h = calc_generic_scale(cam_rect->width, mf.width); |
| 1438 | scale_cam_v = calc_generic_scale(cam_rect->height, mf.height); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1439 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1440 | /* Calculate intermediate window */ |
| 1441 | interm_width = scale_down(rect->width, scale_cam_h); |
| 1442 | interm_height = scale_down(rect->height, scale_cam_v); |
| 1443 | |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 1444 | if (interm_width < icd->user_width) { |
| 1445 | u32 new_scale_h; |
| 1446 | |
| 1447 | new_scale_h = calc_generic_scale(rect->width, icd->user_width); |
| 1448 | |
| 1449 | mf.width = scale_down(cam_rect->width, new_scale_h); |
| 1450 | } |
| 1451 | |
| 1452 | if (interm_height < icd->user_height) { |
| 1453 | u32 new_scale_v; |
| 1454 | |
| 1455 | new_scale_v = calc_generic_scale(rect->height, icd->user_height); |
| 1456 | |
| 1457 | mf.height = scale_down(cam_rect->height, new_scale_v); |
| 1458 | } |
| 1459 | |
| 1460 | if (interm_width < icd->user_width || interm_height < icd->user_height) { |
| 1461 | ret = v4l2_device_call_until_err(sd->v4l2_dev, (int)icd, video, |
| 1462 | s_mbus_fmt, &mf); |
| 1463 | if (ret < 0) |
| 1464 | return ret; |
| 1465 | |
| 1466 | dev_geo(dev, "New camera output %ux%u\n", mf.width, mf.height); |
| 1467 | scale_cam_h = calc_generic_scale(cam_rect->width, mf.width); |
| 1468 | scale_cam_v = calc_generic_scale(cam_rect->height, mf.height); |
| 1469 | interm_width = scale_down(rect->width, scale_cam_h); |
| 1470 | interm_height = scale_down(rect->height, scale_cam_v); |
| 1471 | } |
| 1472 | |
| 1473 | /* Cache camera output window */ |
| 1474 | cam->width = mf.width; |
| 1475 | cam->height = mf.height; |
| 1476 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1477 | if (pcdev->image_mode) { |
| 1478 | out_width = min(interm_width, icd->user_width); |
| 1479 | out_height = min(interm_height, icd->user_height); |
| 1480 | } else { |
| 1481 | out_width = interm_width; |
| 1482 | out_height = interm_height; |
| 1483 | } |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1484 | |
| 1485 | /* |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1486 | * 5. Calculate CEU scales from camera scales from results of (5) and |
| 1487 | * the user window |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1488 | */ |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1489 | scale_ceu_h = calc_scale(interm_width, &out_width); |
| 1490 | scale_ceu_v = calc_scale(interm_height, &out_height); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1491 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1492 | 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] | 1493 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1494 | /* Apply CEU scales. */ |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1495 | cflcr = scale_ceu_h | (scale_ceu_v << 16); |
| 1496 | if (cflcr != pcdev->cflcr) { |
| 1497 | pcdev->cflcr = cflcr; |
| 1498 | ceu_write(pcdev, CFLCR, cflcr); |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1499 | } |
| 1500 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1501 | icd->user_width = out_width; |
| 1502 | icd->user_height = out_height; |
Guennadi Liakhovetski | 787d0f9 | 2011-02-16 18:42:24 -0300 | [diff] [blame] | 1503 | cam->ceu_left = scale_down(rect->left - cam_rect->left, scale_cam_h) & ~1; |
| 1504 | 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] | 1505 | |
| 1506 | /* 6. Use CEU cropping to crop to the new window. */ |
| 1507 | sh_mobile_ceu_set_rect(icd); |
| 1508 | |
| 1509 | cam->subrect = *rect; |
| 1510 | |
| 1511 | dev_geo(dev, "6: CEU cropped to %ux%u@%u:%u\n", |
| 1512 | icd->user_width, icd->user_height, |
| 1513 | cam->ceu_left, cam->ceu_top); |
| 1514 | |
Guennadi Liakhovetski | 787d0f9 | 2011-02-16 18:42:24 -0300 | [diff] [blame] | 1515 | /* Restore capture. The CE bit can be cleared by the hardware */ |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1516 | if (pcdev->active) |
| 1517 | capsr |= 1; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1518 | capture_restore(pcdev, capsr); |
| 1519 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1520 | /* Even if only camera cropping succeeded */ |
| 1521 | return ret; |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 1522 | } |
| 1523 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1524 | static int sh_mobile_ceu_get_crop(struct soc_camera_device *icd, |
| 1525 | struct v4l2_crop *a) |
| 1526 | { |
| 1527 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
| 1528 | |
| 1529 | a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 1530 | a->c = cam->subrect; |
| 1531 | |
| 1532 | return 0; |
| 1533 | } |
| 1534 | |
| 1535 | /* |
| 1536 | * Calculate real client output window by applying new scales to the current |
| 1537 | * client crop. New scales are calculated from the requested output format and |
| 1538 | * CEU crop, mapped backed onto the client input (subrect). |
| 1539 | */ |
| 1540 | static void calculate_client_output(struct soc_camera_device *icd, |
| 1541 | struct v4l2_pix_format *pix, struct v4l2_mbus_framefmt *mf) |
| 1542 | { |
| 1543 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1544 | struct device *dev = icd->parent; |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1545 | struct v4l2_rect *cam_subrect = &cam->subrect; |
| 1546 | unsigned int scale_v, scale_h; |
| 1547 | |
| 1548 | if (cam_subrect->width == cam->rect.width && |
| 1549 | cam_subrect->height == cam->rect.height) { |
| 1550 | /* No sub-cropping */ |
| 1551 | mf->width = pix->width; |
| 1552 | mf->height = pix->height; |
| 1553 | return; |
| 1554 | } |
| 1555 | |
| 1556 | /* 1.-2. Current camera scales and subwin - cached. */ |
| 1557 | |
| 1558 | dev_geo(dev, "2: subwin %ux%u@%u:%u\n", |
| 1559 | cam_subrect->width, cam_subrect->height, |
| 1560 | cam_subrect->left, cam_subrect->top); |
| 1561 | |
| 1562 | /* |
| 1563 | * 3. Calculate new combined scales from input sub-window to requested |
| 1564 | * user window. |
| 1565 | */ |
| 1566 | |
| 1567 | /* |
| 1568 | * TODO: CEU cannot scale images larger than VGA to smaller than SubQCIF |
| 1569 | * (128x96) or larger than VGA |
| 1570 | */ |
| 1571 | scale_h = calc_generic_scale(cam_subrect->width, pix->width); |
| 1572 | scale_v = calc_generic_scale(cam_subrect->height, pix->height); |
| 1573 | |
| 1574 | dev_geo(dev, "3: scales %u:%u\n", scale_h, scale_v); |
| 1575 | |
| 1576 | /* |
| 1577 | * 4. Calculate client output window by applying combined scales to real |
| 1578 | * input window. |
| 1579 | */ |
| 1580 | mf->width = scale_down(cam->rect.width, scale_h); |
| 1581 | mf->height = scale_down(cam->rect.height, scale_v); |
| 1582 | } |
| 1583 | |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1584 | /* Similar to set_crop multistage iterative algorithm */ |
Guennadi Liakhovetski | d8fac21 | 2008-12-01 09:45:21 -0300 | [diff] [blame] | 1585 | static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd, |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 1586 | struct v4l2_format *f) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1587 | { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1588 | struct device *dev = icd->parent; |
| 1589 | struct soc_camera_host *ici = to_soc_camera_host(dev); |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1590 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1591 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
| 1592 | struct v4l2_pix_format *pix = &f->fmt.pix; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1593 | struct v4l2_mbus_framefmt mf; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1594 | __u32 pixfmt = pix->pixelformat; |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1595 | const struct soc_camera_format_xlate *xlate; |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 1596 | /* Keep Compiler Happy */ |
| 1597 | unsigned int ceu_sub_width = 0, ceu_sub_height = 0; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1598 | u16 scale_v, scale_h; |
| 1599 | int ret; |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 1600 | bool image_mode; |
| 1601 | enum v4l2_field field; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1602 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1603 | dev_geo(dev, "S_FMT(pix=0x%x, %ux%u)\n", pixfmt, pix->width, pix->height); |
| 1604 | |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1605 | switch (pix->field) { |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1606 | default: |
| 1607 | pix->field = V4L2_FIELD_NONE; |
| 1608 | /* fall-through */ |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 1609 | case V4L2_FIELD_INTERLACED_TB: |
| 1610 | case V4L2_FIELD_INTERLACED_BT: |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1611 | case V4L2_FIELD_NONE: |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 1612 | field = pix->field; |
| 1613 | break; |
| 1614 | case V4L2_FIELD_INTERLACED: |
| 1615 | field = V4L2_FIELD_INTERLACED_TB; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1616 | break; |
| 1617 | } |
Guennadi Liakhovetski | 25c4d74 | 2008-12-01 09:44:59 -0300 | [diff] [blame] | 1618 | |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1619 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
| 1620 | if (!xlate) { |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1621 | dev_warn(dev, "Format %x not found\n", pixfmt); |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1622 | return -EINVAL; |
Guennadi Liakhovetski | 25c4d74 | 2008-12-01 09:44:59 -0300 | [diff] [blame] | 1623 | } |
| 1624 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1625 | /* 1.-4. Calculate client output geometry */ |
| 1626 | calculate_client_output(icd, &f->fmt.pix, &mf); |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1627 | mf.field = pix->field; |
| 1628 | mf.colorspace = pix->colorspace; |
| 1629 | mf.code = xlate->code; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1630 | |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1631 | switch (pixfmt) { |
| 1632 | case V4L2_PIX_FMT_NV12: |
| 1633 | case V4L2_PIX_FMT_NV21: |
| 1634 | case V4L2_PIX_FMT_NV16: |
| 1635 | case V4L2_PIX_FMT_NV61: |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1636 | image_mode = true; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1637 | break; |
| 1638 | default: |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1639 | image_mode = false; |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1640 | } |
Guennadi Liakhovetski | 25c4d74 | 2008-12-01 09:44:59 -0300 | [diff] [blame] | 1641 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1642 | 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] | 1643 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1644 | /* 5. - 9. */ |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1645 | ret = client_scale(icd, &mf, &ceu_sub_width, &ceu_sub_height, |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 1646 | image_mode && V4L2_FIELD_NONE == field); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1647 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1648 | dev_geo(dev, "5-9: client scale return %d\n", ret); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1649 | |
| 1650 | /* Done with the camera. Now see if we can improve the result */ |
| 1651 | |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 1652 | dev_geo(dev, "fmt %ux%u, requested %ux%u\n", |
| 1653 | mf.width, mf.height, pix->width, pix->height); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1654 | if (ret < 0) |
| 1655 | return ret; |
| 1656 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1657 | if (mf.code != xlate->code) |
| 1658 | return -EINVAL; |
| 1659 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1660 | /* 9. Prepare CEU crop */ |
| 1661 | cam->width = mf.width; |
| 1662 | cam->height = mf.height; |
| 1663 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1664 | /* 10. Use CEU scaling to scale to the requested user window. */ |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1665 | |
| 1666 | /* We cannot scale up */ |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1667 | if (pix->width > ceu_sub_width) |
| 1668 | ceu_sub_width = pix->width; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1669 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1670 | if (pix->height > ceu_sub_height) |
| 1671 | ceu_sub_height = pix->height; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1672 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1673 | pix->colorspace = mf.colorspace; |
| 1674 | |
| 1675 | if (image_mode) { |
| 1676 | /* Scale pix->{width x height} down to width x height */ |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1677 | scale_h = calc_scale(ceu_sub_width, &pix->width); |
| 1678 | scale_v = calc_scale(ceu_sub_height, &pix->height); |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1679 | } else { |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1680 | pix->width = ceu_sub_width; |
| 1681 | pix->height = ceu_sub_height; |
| 1682 | scale_h = 0; |
| 1683 | scale_v = 0; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1684 | } |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1685 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1686 | pcdev->cflcr = scale_h | (scale_v << 16); |
| 1687 | |
| 1688 | /* |
| 1689 | * We have calculated CFLCR, the actual configuration will be performed |
| 1690 | * in sh_mobile_ceu_set_bus_param() |
| 1691 | */ |
| 1692 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1693 | 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] | 1694 | ceu_sub_width, scale_h, pix->width, |
| 1695 | ceu_sub_height, scale_v, pix->height); |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1696 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1697 | cam->code = xlate->code; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1698 | icd->current_fmt = xlate; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1699 | |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 1700 | pcdev->field = field; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1701 | pcdev->image_mode = image_mode; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1702 | |
| 1703 | return 0; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1704 | } |
| 1705 | |
Guennadi Liakhovetski | d8fac21 | 2008-12-01 09:45:21 -0300 | [diff] [blame] | 1706 | static int sh_mobile_ceu_try_fmt(struct soc_camera_device *icd, |
| 1707 | struct v4l2_format *f) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1708 | { |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1709 | const struct soc_camera_format_xlate *xlate; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1710 | struct v4l2_pix_format *pix = &f->fmt.pix; |
Guennadi Liakhovetski | c9c1f1c | 2009-08-25 11:46:59 -0300 | [diff] [blame] | 1711 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1712 | struct v4l2_mbus_framefmt mf; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1713 | __u32 pixfmt = pix->pixelformat; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1714 | int width, height; |
Kuninori Morimoto | ccab8a2 | 2008-12-18 12:51:21 -0300 | [diff] [blame] | 1715 | int ret; |
Guennadi Liakhovetski | a2c8c68 | 2008-12-01 09:44:53 -0300 | [diff] [blame] | 1716 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1717 | dev_geo(icd->parent, "TRY_FMT(pix=0x%x, %ux%u)\n", |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 1718 | pixfmt, pix->width, pix->height); |
| 1719 | |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1720 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
| 1721 | if (!xlate) { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1722 | dev_warn(icd->parent, "Format %x not found\n", pixfmt); |
Guennadi Liakhovetski | 25c4d74 | 2008-12-01 09:44:59 -0300 | [diff] [blame] | 1723 | return -EINVAL; |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1724 | } |
Guennadi Liakhovetski | 25c4d74 | 2008-12-01 09:44:59 -0300 | [diff] [blame] | 1725 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1726 | /* FIXME: calculate using depth and bus width */ |
| 1727 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1728 | v4l_bound_align_image(&pix->width, 2, 2560, 1, |
| 1729 | &pix->height, 4, 1920, 2, 0); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1730 | |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1731 | width = pix->width; |
| 1732 | height = pix->height; |
| 1733 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1734 | /* limit to sensor capabilities */ |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1735 | mf.width = pix->width; |
| 1736 | mf.height = pix->height; |
| 1737 | mf.field = pix->field; |
| 1738 | mf.code = xlate->code; |
| 1739 | mf.colorspace = pix->colorspace; |
| 1740 | |
Guennadi Liakhovetski | 24105eb | 2011-03-23 05:41:28 -0300 | [diff] [blame] | 1741 | ret = v4l2_device_call_until_err(sd->v4l2_dev, (long)icd, video, try_mbus_fmt, &mf); |
Kuninori Morimoto | ccab8a2 | 2008-12-18 12:51:21 -0300 | [diff] [blame] | 1742 | if (ret < 0) |
| 1743 | return ret; |
| 1744 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1745 | pix->width = mf.width; |
| 1746 | pix->height = mf.height; |
| 1747 | pix->field = mf.field; |
| 1748 | pix->colorspace = mf.colorspace; |
| 1749 | |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1750 | switch (pixfmt) { |
| 1751 | case V4L2_PIX_FMT_NV12: |
| 1752 | case V4L2_PIX_FMT_NV21: |
| 1753 | case V4L2_PIX_FMT_NV16: |
| 1754 | case V4L2_PIX_FMT_NV61: |
| 1755 | /* FIXME: check against rect_max after converting soc-camera */ |
| 1756 | /* We can scale precisely, need a bigger image from camera */ |
| 1757 | if (pix->width < width || pix->height < height) { |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1758 | /* |
| 1759 | * We presume, the sensor behaves sanely, i.e., if |
| 1760 | * requested a bigger rectangle, it will not return a |
| 1761 | * smaller one. |
| 1762 | */ |
| 1763 | mf.width = 2560; |
| 1764 | mf.height = 1920; |
Guennadi Liakhovetski | 24105eb | 2011-03-23 05:41:28 -0300 | [diff] [blame] | 1765 | ret = v4l2_device_call_until_err(sd->v4l2_dev, (long)icd, video, |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 1766 | try_mbus_fmt, &mf); |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1767 | if (ret < 0) { |
| 1768 | /* Shouldn't actually happen... */ |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1769 | dev_err(icd->parent, |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1770 | "FIXME: client try_fmt() = %d\n", ret); |
| 1771 | return ret; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1772 | } |
| 1773 | } |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1774 | /* We will scale exactly */ |
| 1775 | if (mf.width > width) |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1776 | pix->width = width; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1777 | if (mf.height > height) |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1778 | pix->height = height; |
Kuninori Morimoto | ccab8a2 | 2008-12-18 12:51:21 -0300 | [diff] [blame] | 1779 | } |
| 1780 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1781 | 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] | 1782 | __func__, ret, pix->pixelformat, pix->width, pix->height); |
| 1783 | |
Kuninori Morimoto | ccab8a2 | 2008-12-18 12:51:21 -0300 | [diff] [blame] | 1784 | return ret; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1785 | } |
| 1786 | |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 1787 | static int sh_mobile_ceu_set_livecrop(struct soc_camera_device *icd, |
| 1788 | struct v4l2_crop *a) |
| 1789 | { |
| 1790 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1791 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 1792 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
| 1793 | u32 out_width = icd->user_width, out_height = icd->user_height; |
| 1794 | int ret; |
| 1795 | |
| 1796 | /* Freeze queue */ |
| 1797 | pcdev->frozen = 1; |
| 1798 | /* Wait for frame */ |
| 1799 | ret = wait_for_completion_interruptible(&pcdev->complete); |
| 1800 | /* Stop the client */ |
| 1801 | ret = v4l2_subdev_call(sd, video, s_stream, 0); |
| 1802 | if (ret < 0) |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1803 | dev_warn(icd->parent, |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 1804 | "Client failed to stop the stream: %d\n", ret); |
| 1805 | else |
| 1806 | /* Do the crop, if it fails, there's nothing more we can do */ |
| 1807 | sh_mobile_ceu_set_crop(icd, a); |
| 1808 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1809 | 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] | 1810 | |
| 1811 | if (icd->user_width != out_width || icd->user_height != out_height) { |
| 1812 | struct v4l2_format f = { |
| 1813 | .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, |
| 1814 | .fmt.pix = { |
| 1815 | .width = out_width, |
| 1816 | .height = out_height, |
| 1817 | .pixelformat = icd->current_fmt->host_fmt->fourcc, |
| 1818 | .field = pcdev->field, |
| 1819 | .colorspace = icd->colorspace, |
| 1820 | }, |
| 1821 | }; |
| 1822 | ret = sh_mobile_ceu_set_fmt(icd, &f); |
| 1823 | if (!ret && (out_width != f.fmt.pix.width || |
| 1824 | out_height != f.fmt.pix.height)) |
| 1825 | ret = -EINVAL; |
| 1826 | if (!ret) { |
| 1827 | icd->user_width = out_width; |
| 1828 | icd->user_height = out_height; |
| 1829 | ret = sh_mobile_ceu_set_bus_param(icd, |
| 1830 | icd->current_fmt->host_fmt->fourcc); |
| 1831 | } |
| 1832 | } |
| 1833 | |
| 1834 | /* Thaw the queue */ |
| 1835 | pcdev->frozen = 0; |
| 1836 | spin_lock_irq(&pcdev->lock); |
| 1837 | sh_mobile_ceu_capture(pcdev); |
| 1838 | spin_unlock_irq(&pcdev->lock); |
| 1839 | /* Start the client */ |
| 1840 | ret = v4l2_subdev_call(sd, video, s_stream, 1); |
| 1841 | return ret; |
| 1842 | } |
| 1843 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1844 | static unsigned int sh_mobile_ceu_poll(struct file *file, poll_table *pt) |
| 1845 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 1846 | struct soc_camera_device *icd = file->private_data; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1847 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 1848 | return vb2_poll(&icd->vb2_vidq, file, pt); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1849 | } |
| 1850 | |
| 1851 | static int sh_mobile_ceu_querycap(struct soc_camera_host *ici, |
| 1852 | struct v4l2_capability *cap) |
| 1853 | { |
| 1854 | strlcpy(cap->card, "SuperH_Mobile_CEU", sizeof(cap->card)); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1855 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; |
| 1856 | return 0; |
| 1857 | } |
| 1858 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 1859 | static int sh_mobile_ceu_init_videobuf(struct vb2_queue *q, |
| 1860 | struct soc_camera_device *icd) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1861 | { |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 1862 | q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 1863 | q->io_modes = VB2_MMAP | VB2_USERPTR; |
| 1864 | q->drv_priv = icd; |
| 1865 | q->ops = &sh_mobile_ceu_videobuf_ops; |
| 1866 | q->mem_ops = &vb2_dma_contig_memops; |
| 1867 | q->buf_struct_size = sizeof(struct sh_mobile_ceu_buffer); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1868 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 1869 | return vb2_queue_init(q); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1870 | } |
| 1871 | |
Guennadi Liakhovetski | 4a6110b | 2009-08-25 11:44:15 -0300 | [diff] [blame] | 1872 | static int sh_mobile_ceu_get_ctrl(struct soc_camera_device *icd, |
| 1873 | struct v4l2_control *ctrl) |
| 1874 | { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1875 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | 4a6110b | 2009-08-25 11:44:15 -0300 | [diff] [blame] | 1876 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
| 1877 | u32 val; |
| 1878 | |
| 1879 | switch (ctrl->id) { |
| 1880 | case V4L2_CID_SHARPNESS: |
| 1881 | val = ceu_read(pcdev, CLFCR); |
| 1882 | ctrl->value = val ^ 1; |
| 1883 | return 0; |
| 1884 | } |
| 1885 | return -ENOIOCTLCMD; |
| 1886 | } |
| 1887 | |
| 1888 | static int sh_mobile_ceu_set_ctrl(struct soc_camera_device *icd, |
| 1889 | struct v4l2_control *ctrl) |
| 1890 | { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1891 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | 4a6110b | 2009-08-25 11:44:15 -0300 | [diff] [blame] | 1892 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
| 1893 | |
| 1894 | switch (ctrl->id) { |
| 1895 | case V4L2_CID_SHARPNESS: |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1896 | switch (icd->current_fmt->host_fmt->fourcc) { |
Guennadi Liakhovetski | 4a6110b | 2009-08-25 11:44:15 -0300 | [diff] [blame] | 1897 | case V4L2_PIX_FMT_NV12: |
| 1898 | case V4L2_PIX_FMT_NV21: |
| 1899 | case V4L2_PIX_FMT_NV16: |
| 1900 | case V4L2_PIX_FMT_NV61: |
| 1901 | ceu_write(pcdev, CLFCR, !ctrl->value); |
| 1902 | return 0; |
| 1903 | } |
| 1904 | return -EINVAL; |
| 1905 | } |
| 1906 | return -ENOIOCTLCMD; |
| 1907 | } |
| 1908 | |
| 1909 | static const struct v4l2_queryctrl sh_mobile_ceu_controls[] = { |
| 1910 | { |
| 1911 | .id = V4L2_CID_SHARPNESS, |
| 1912 | .type = V4L2_CTRL_TYPE_BOOLEAN, |
| 1913 | .name = "Low-pass filter", |
| 1914 | .minimum = 0, |
| 1915 | .maximum = 1, |
| 1916 | .step = 1, |
| 1917 | .default_value = 0, |
| 1918 | }, |
| 1919 | }; |
| 1920 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1921 | static struct soc_camera_host_ops sh_mobile_ceu_host_ops = { |
| 1922 | .owner = THIS_MODULE, |
| 1923 | .add = sh_mobile_ceu_add_device, |
| 1924 | .remove = sh_mobile_ceu_remove_device, |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1925 | .get_formats = sh_mobile_ceu_get_formats, |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1926 | .put_formats = sh_mobile_ceu_put_formats, |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1927 | .get_crop = sh_mobile_ceu_get_crop, |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 1928 | .set_crop = sh_mobile_ceu_set_crop, |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 1929 | .set_livecrop = sh_mobile_ceu_set_livecrop, |
Guennadi Liakhovetski | d8fac21 | 2008-12-01 09:45:21 -0300 | [diff] [blame] | 1930 | .set_fmt = sh_mobile_ceu_set_fmt, |
| 1931 | .try_fmt = sh_mobile_ceu_try_fmt, |
Guennadi Liakhovetski | 4a6110b | 2009-08-25 11:44:15 -0300 | [diff] [blame] | 1932 | .set_ctrl = sh_mobile_ceu_set_ctrl, |
| 1933 | .get_ctrl = sh_mobile_ceu_get_ctrl, |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1934 | .poll = sh_mobile_ceu_poll, |
| 1935 | .querycap = sh_mobile_ceu_querycap, |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1936 | .set_bus_param = sh_mobile_ceu_set_bus_param, |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 1937 | .init_videobuf2 = sh_mobile_ceu_init_videobuf, |
Guennadi Liakhovetski | 4a6110b | 2009-08-25 11:44:15 -0300 | [diff] [blame] | 1938 | .controls = sh_mobile_ceu_controls, |
| 1939 | .num_controls = ARRAY_SIZE(sh_mobile_ceu_controls), |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1940 | }; |
| 1941 | |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 1942 | struct bus_wait { |
| 1943 | struct notifier_block notifier; |
| 1944 | struct completion completion; |
| 1945 | struct device *dev; |
| 1946 | }; |
| 1947 | |
| 1948 | static int bus_notify(struct notifier_block *nb, |
| 1949 | unsigned long action, void *data) |
| 1950 | { |
| 1951 | struct device *dev = data; |
| 1952 | struct bus_wait *wait = container_of(nb, struct bus_wait, notifier); |
| 1953 | |
| 1954 | if (wait->dev != dev) |
| 1955 | return NOTIFY_DONE; |
| 1956 | |
| 1957 | switch (action) { |
| 1958 | case BUS_NOTIFY_UNBOUND_DRIVER: |
| 1959 | /* Protect from module unloading */ |
| 1960 | wait_for_completion(&wait->completion); |
| 1961 | return NOTIFY_OK; |
| 1962 | } |
| 1963 | return NOTIFY_DONE; |
| 1964 | } |
| 1965 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1966 | static int __devinit sh_mobile_ceu_probe(struct platform_device *pdev) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1967 | { |
| 1968 | struct sh_mobile_ceu_dev *pcdev; |
| 1969 | struct resource *res; |
| 1970 | void __iomem *base; |
| 1971 | unsigned int irq; |
| 1972 | int err = 0; |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 1973 | struct bus_wait wait = { |
| 1974 | .completion = COMPLETION_INITIALIZER_ONSTACK(wait.completion), |
| 1975 | .notifier.notifier_call = bus_notify, |
| 1976 | }; |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 1977 | struct sh_mobile_ceu_companion *csi2; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1978 | |
| 1979 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 1980 | irq = platform_get_irq(pdev, 0); |
Uwe Kleine-König | b89fc2e | 2010-01-09 20:45:13 -0300 | [diff] [blame] | 1981 | if (!res || (int)irq <= 0) { |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1982 | dev_err(&pdev->dev, "Not enough CEU platform resources.\n"); |
| 1983 | err = -ENODEV; |
| 1984 | goto exit; |
| 1985 | } |
| 1986 | |
| 1987 | pcdev = kzalloc(sizeof(*pcdev), GFP_KERNEL); |
| 1988 | if (!pcdev) { |
| 1989 | dev_err(&pdev->dev, "Could not allocate pcdev\n"); |
| 1990 | err = -ENOMEM; |
| 1991 | goto exit; |
| 1992 | } |
| 1993 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1994 | INIT_LIST_HEAD(&pcdev->capture); |
| 1995 | spin_lock_init(&pcdev->lock); |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 1996 | init_completion(&pcdev->complete); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1997 | |
| 1998 | pcdev->pdata = pdev->dev.platform_data; |
| 1999 | if (!pcdev->pdata) { |
| 2000 | err = -EINVAL; |
| 2001 | dev_err(&pdev->dev, "CEU platform data not set.\n"); |
| 2002 | goto exit_kfree; |
| 2003 | } |
| 2004 | |
Guennadi Liakhovetski | eb6c855 | 2009-04-24 12:55:18 -0300 | [diff] [blame] | 2005 | base = ioremap_nocache(res->start, resource_size(res)); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2006 | if (!base) { |
| 2007 | err = -ENXIO; |
| 2008 | dev_err(&pdev->dev, "Unable to ioremap CEU registers.\n"); |
| 2009 | goto exit_kfree; |
| 2010 | } |
| 2011 | |
| 2012 | pcdev->irq = irq; |
| 2013 | pcdev->base = base; |
| 2014 | pcdev->video_limit = 0; /* only enabled if second resource exists */ |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2015 | |
| 2016 | res = platform_get_resource(pdev, IORESOURCE_MEM, 1); |
| 2017 | if (res) { |
| 2018 | err = dma_declare_coherent_memory(&pdev->dev, res->start, |
| 2019 | res->start, |
Guennadi Liakhovetski | eb6c855 | 2009-04-24 12:55:18 -0300 | [diff] [blame] | 2020 | resource_size(res), |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2021 | DMA_MEMORY_MAP | |
| 2022 | DMA_MEMORY_EXCLUSIVE); |
| 2023 | if (!err) { |
| 2024 | dev_err(&pdev->dev, "Unable to declare CEU memory.\n"); |
| 2025 | err = -ENXIO; |
| 2026 | goto exit_iounmap; |
| 2027 | } |
| 2028 | |
Guennadi Liakhovetski | eb6c855 | 2009-04-24 12:55:18 -0300 | [diff] [blame] | 2029 | pcdev->video_limit = resource_size(res); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2030 | } |
| 2031 | |
| 2032 | /* request irq */ |
| 2033 | err = request_irq(pcdev->irq, sh_mobile_ceu_irq, IRQF_DISABLED, |
Kay Sievers | af128a1 | 2008-10-30 00:51:46 -0300 | [diff] [blame] | 2034 | dev_name(&pdev->dev), pcdev); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2035 | if (err) { |
| 2036 | dev_err(&pdev->dev, "Unable to register CEU interrupt.\n"); |
| 2037 | goto exit_release_mem; |
| 2038 | } |
| 2039 | |
Magnus Damm | 6d1386c | 2009-08-14 10:49:17 +0000 | [diff] [blame] | 2040 | pm_suspend_ignore_children(&pdev->dev, true); |
| 2041 | pm_runtime_enable(&pdev->dev); |
| 2042 | pm_runtime_resume(&pdev->dev); |
Magnus Damm | a42b6dd | 2008-10-31 20:21:44 +0900 | [diff] [blame] | 2043 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2044 | pcdev->ici.priv = pcdev; |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 2045 | pcdev->ici.v4l2_dev.dev = &pdev->dev; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2046 | pcdev->ici.nr = pdev->id; |
Kay Sievers | af128a1 | 2008-10-30 00:51:46 -0300 | [diff] [blame] | 2047 | pcdev->ici.drv_name = dev_name(&pdev->dev); |
| 2048 | pcdev->ici.ops = &sh_mobile_ceu_host_ops; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2049 | |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 2050 | pcdev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev); |
| 2051 | if (IS_ERR(pcdev->alloc_ctx)) { |
| 2052 | err = PTR_ERR(pcdev->alloc_ctx); |
| 2053 | goto exit_free_clk; |
| 2054 | } |
| 2055 | |
| 2056 | err = soc_camera_host_register(&pcdev->ici); |
| 2057 | if (err) |
| 2058 | goto exit_free_ctx; |
| 2059 | |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 2060 | /* CSI2 interfacing */ |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 2061 | csi2 = pcdev->pdata->csi2; |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 2062 | if (csi2) { |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 2063 | struct platform_device *csi2_pdev = |
| 2064 | platform_device_alloc("sh-mobile-csi2", csi2->id); |
| 2065 | struct sh_csi2_pdata *csi2_pdata = csi2->platform_data; |
| 2066 | |
| 2067 | if (!csi2_pdev) { |
| 2068 | err = -ENOMEM; |
| 2069 | goto exit_host_unregister; |
| 2070 | } |
| 2071 | |
| 2072 | pcdev->csi2_pdev = csi2_pdev; |
| 2073 | |
| 2074 | err = platform_device_add_data(csi2_pdev, csi2_pdata, sizeof(*csi2_pdata)); |
| 2075 | if (err < 0) |
| 2076 | goto exit_pdev_put; |
| 2077 | |
| 2078 | csi2_pdata = csi2_pdev->dev.platform_data; |
| 2079 | csi2_pdata->v4l2_dev = &pcdev->ici.v4l2_dev; |
| 2080 | |
| 2081 | csi2_pdev->resource = csi2->resource; |
| 2082 | csi2_pdev->num_resources = csi2->num_resources; |
| 2083 | |
| 2084 | err = platform_device_add(csi2_pdev); |
| 2085 | if (err < 0) |
| 2086 | goto exit_pdev_put; |
| 2087 | |
| 2088 | wait.dev = &csi2_pdev->dev; |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 2089 | |
| 2090 | err = bus_register_notifier(&platform_bus_type, &wait.notifier); |
| 2091 | if (err < 0) |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 2092 | goto exit_pdev_unregister; |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 2093 | |
| 2094 | /* |
| 2095 | * From this point the driver module will not unload, until |
| 2096 | * we complete the completion. |
| 2097 | */ |
| 2098 | |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 2099 | if (!csi2_pdev->dev.driver) { |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 2100 | complete(&wait.completion); |
| 2101 | /* Either too late, or probing failed */ |
| 2102 | bus_unregister_notifier(&platform_bus_type, &wait.notifier); |
| 2103 | err = -ENXIO; |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 2104 | goto exit_pdev_unregister; |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 2105 | } |
| 2106 | |
| 2107 | /* |
| 2108 | * The module is still loaded, in the worst case it is hanging |
| 2109 | * in device release on our completion. So, _now_ dereferencing |
| 2110 | * the "owner" is safe! |
| 2111 | */ |
| 2112 | |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 2113 | err = try_module_get(csi2_pdev->dev.driver->owner); |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 2114 | |
| 2115 | /* Let notifier complete, if it has been locked */ |
| 2116 | complete(&wait.completion); |
| 2117 | bus_unregister_notifier(&platform_bus_type, &wait.notifier); |
| 2118 | if (!err) { |
| 2119 | err = -ENODEV; |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 2120 | goto exit_pdev_unregister; |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 2121 | } |
| 2122 | } |
| 2123 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2124 | return 0; |
| 2125 | |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 2126 | exit_pdev_unregister: |
| 2127 | platform_device_del(pcdev->csi2_pdev); |
| 2128 | exit_pdev_put: |
| 2129 | pcdev->csi2_pdev->resource = NULL; |
| 2130 | platform_device_put(pcdev->csi2_pdev); |
| 2131 | exit_host_unregister: |
| 2132 | soc_camera_host_unregister(&pcdev->ici); |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 2133 | exit_free_ctx: |
| 2134 | vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx); |
Kuninori Morimoto | 055e05a | 2009-11-09 16:13:24 -0300 | [diff] [blame] | 2135 | exit_free_clk: |
| 2136 | pm_runtime_disable(&pdev->dev); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2137 | free_irq(pcdev->irq, pcdev); |
| 2138 | exit_release_mem: |
| 2139 | if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) |
| 2140 | dma_release_declared_memory(&pdev->dev); |
| 2141 | exit_iounmap: |
| 2142 | iounmap(base); |
| 2143 | exit_kfree: |
| 2144 | kfree(pcdev); |
| 2145 | exit: |
| 2146 | return err; |
| 2147 | } |
| 2148 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 2149 | static int __devexit sh_mobile_ceu_remove(struct platform_device *pdev) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2150 | { |
Guennadi Liakhovetski | eff505f | 2009-04-24 12:55:48 -0300 | [diff] [blame] | 2151 | struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev); |
| 2152 | struct sh_mobile_ceu_dev *pcdev = container_of(soc_host, |
| 2153 | struct sh_mobile_ceu_dev, ici); |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 2154 | struct platform_device *csi2_pdev = pcdev->csi2_pdev; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2155 | |
Guennadi Liakhovetski | eff505f | 2009-04-24 12:55:48 -0300 | [diff] [blame] | 2156 | soc_camera_host_unregister(soc_host); |
Kuninori Morimoto | 055e05a | 2009-11-09 16:13:24 -0300 | [diff] [blame] | 2157 | pm_runtime_disable(&pdev->dev); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2158 | free_irq(pcdev->irq, pcdev); |
| 2159 | if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) |
| 2160 | dma_release_declared_memory(&pdev->dev); |
| 2161 | iounmap(pcdev->base); |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 2162 | vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx); |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 2163 | if (csi2_pdev && csi2_pdev->dev.driver) { |
| 2164 | struct module *csi2_drv = csi2_pdev->dev.driver->owner; |
| 2165 | platform_device_del(csi2_pdev); |
| 2166 | csi2_pdev->resource = NULL; |
| 2167 | platform_device_put(csi2_pdev); |
| 2168 | module_put(csi2_drv); |
| 2169 | } |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2170 | kfree(pcdev); |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 2171 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2172 | return 0; |
| 2173 | } |
| 2174 | |
Magnus Damm | 6d1386c | 2009-08-14 10:49:17 +0000 | [diff] [blame] | 2175 | static int sh_mobile_ceu_runtime_nop(struct device *dev) |
| 2176 | { |
| 2177 | /* Runtime PM callback shared between ->runtime_suspend() |
| 2178 | * and ->runtime_resume(). Simply returns success. |
| 2179 | * |
| 2180 | * This driver re-initializes all registers after |
| 2181 | * pm_runtime_get_sync() anyway so there is no need |
| 2182 | * to save and restore registers here. |
| 2183 | */ |
| 2184 | return 0; |
| 2185 | } |
| 2186 | |
Alexey Dobriyan | 4714521 | 2009-12-14 18:00:08 -0800 | [diff] [blame] | 2187 | static const struct dev_pm_ops sh_mobile_ceu_dev_pm_ops = { |
Magnus Damm | 6d1386c | 2009-08-14 10:49:17 +0000 | [diff] [blame] | 2188 | .runtime_suspend = sh_mobile_ceu_runtime_nop, |
| 2189 | .runtime_resume = sh_mobile_ceu_runtime_nop, |
| 2190 | }; |
| 2191 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2192 | static struct platform_driver sh_mobile_ceu_driver = { |
| 2193 | .driver = { |
| 2194 | .name = "sh_mobile_ceu", |
Magnus Damm | 6d1386c | 2009-08-14 10:49:17 +0000 | [diff] [blame] | 2195 | .pm = &sh_mobile_ceu_dev_pm_ops, |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2196 | }, |
| 2197 | .probe = sh_mobile_ceu_probe, |
Uwe Kleine-König | 50e55fd | 2009-12-10 17:00:13 -0300 | [diff] [blame] | 2198 | .remove = __devexit_p(sh_mobile_ceu_remove), |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2199 | }; |
| 2200 | |
| 2201 | static int __init sh_mobile_ceu_init(void) |
| 2202 | { |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 2203 | /* Whatever return code */ |
| 2204 | request_module("sh_mobile_csi2"); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2205 | return platform_driver_register(&sh_mobile_ceu_driver); |
| 2206 | } |
| 2207 | |
| 2208 | static void __exit sh_mobile_ceu_exit(void) |
| 2209 | { |
Paul Mundt | 01c1e4c | 2008-08-01 19:48:51 -0300 | [diff] [blame] | 2210 | platform_driver_unregister(&sh_mobile_ceu_driver); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2211 | } |
| 2212 | |
| 2213 | module_init(sh_mobile_ceu_init); |
| 2214 | module_exit(sh_mobile_ceu_exit); |
| 2215 | |
| 2216 | MODULE_DESCRIPTION("SuperH Mobile CEU driver"); |
| 2217 | MODULE_AUTHOR("Magnus Damm"); |
| 2218 | MODULE_LICENSE("GPL"); |
Mauro Carvalho Chehab | 64dc3c1 | 2011-06-25 11:28:37 -0300 | [diff] [blame] | 2219 | MODULE_VERSION("0.0.6"); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 2220 | MODULE_ALIAS("platform:sh_mobile_ceu"); |