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> |
| 30 | #include <linux/version.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 31 | #include <linux/slab.h> |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 32 | #include <linux/device.h> |
| 33 | #include <linux/platform_device.h> |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 34 | #include <linux/videodev2.h> |
Magnus Damm | 6d1386c | 2009-08-14 10:49:17 +0000 | [diff] [blame] | 35 | #include <linux/pm_runtime.h> |
Guennadi Liakhovetski | f39c1ab | 2009-11-09 16:11:34 -0300 | [diff] [blame] | 36 | #include <linux/sched.h> |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 37 | |
| 38 | #include <media/v4l2-common.h> |
| 39 | #include <media/v4l2-dev.h> |
| 40 | #include <media/soc_camera.h> |
| 41 | #include <media/sh_mobile_ceu.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; |
| 99 | |
| 100 | unsigned int irq; |
| 101 | void __iomem *base; |
| 102 | unsigned long video_limit; |
| 103 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 104 | spinlock_t lock; /* Protects video buffer lists */ |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 105 | struct list_head capture; |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 106 | struct vb2_buffer *active; |
| 107 | struct vb2_alloc_ctx *alloc_ctx; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 108 | |
| 109 | struct sh_mobile_ceu_info *pdata; |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 110 | struct completion complete; |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 111 | |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 112 | u32 cflcr; |
| 113 | |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 114 | enum v4l2_field field; |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 115 | int sequence; |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 116 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 117 | unsigned int image_mode:1; |
| 118 | unsigned int is_16bit:1; |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 119 | unsigned int frozen:1; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 120 | }; |
| 121 | |
| 122 | struct sh_mobile_ceu_cam { |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 123 | /* CEU offsets within scaled by the CEU camera output */ |
| 124 | unsigned int ceu_left; |
| 125 | unsigned int ceu_top; |
| 126 | /* Client output, as seen by the CEU */ |
| 127 | unsigned int width; |
| 128 | unsigned int height; |
| 129 | /* |
| 130 | * User window from S_CROP / G_CROP, produced by client cropping and |
| 131 | * scaling, CEU scaling and CEU cropping, mapped back onto the client |
| 132 | * input window |
| 133 | */ |
| 134 | struct v4l2_rect subrect; |
| 135 | /* Camera cropping rectangle */ |
| 136 | struct v4l2_rect rect; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 137 | const struct soc_mbus_pixelfmt *extra_fmt; |
| 138 | enum v4l2_mbus_pixelcode code; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 139 | }; |
| 140 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 141 | static struct sh_mobile_ceu_buffer *to_ceu_vb(struct vb2_buffer *vb) |
| 142 | { |
| 143 | return container_of(vb, struct sh_mobile_ceu_buffer, vb); |
| 144 | } |
| 145 | |
Kuninori Morimoto | c354b40 | 2009-02-23 12:12:58 -0300 | [diff] [blame] | 146 | static unsigned long make_bus_param(struct sh_mobile_ceu_dev *pcdev) |
| 147 | { |
| 148 | unsigned long flags; |
| 149 | |
| 150 | flags = SOCAM_MASTER | |
| 151 | SOCAM_PCLK_SAMPLE_RISING | |
| 152 | SOCAM_HSYNC_ACTIVE_HIGH | |
| 153 | SOCAM_HSYNC_ACTIVE_LOW | |
| 154 | SOCAM_VSYNC_ACTIVE_HIGH | |
| 155 | SOCAM_VSYNC_ACTIVE_LOW | |
| 156 | SOCAM_DATA_ACTIVE_HIGH; |
| 157 | |
| 158 | if (pcdev->pdata->flags & SH_CEU_FLAG_USE_8BIT_BUS) |
| 159 | flags |= SOCAM_DATAWIDTH_8; |
| 160 | |
| 161 | if (pcdev->pdata->flags & SH_CEU_FLAG_USE_16BIT_BUS) |
| 162 | flags |= SOCAM_DATAWIDTH_16; |
| 163 | |
| 164 | if (flags & SOCAM_DATAWIDTH_MASK) |
| 165 | return flags; |
| 166 | |
| 167 | return 0; |
| 168 | } |
| 169 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 170 | static void ceu_write(struct sh_mobile_ceu_dev *priv, |
Magnus Damm | 7a1a816 | 2008-12-18 12:50:30 -0300 | [diff] [blame] | 171 | unsigned long reg_offs, u32 data) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 172 | { |
| 173 | iowrite32(data, priv->base + reg_offs); |
| 174 | } |
| 175 | |
Magnus Damm | 7a1a816 | 2008-12-18 12:50:30 -0300 | [diff] [blame] | 176 | 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] | 177 | { |
| 178 | return ioread32(priv->base + reg_offs); |
| 179 | } |
| 180 | |
Kuninori Morimoto | b1de7ae | 2009-10-05 12:48:20 -0300 | [diff] [blame] | 181 | static int sh_mobile_ceu_soft_reset(struct sh_mobile_ceu_dev *pcdev) |
| 182 | { |
| 183 | int i, success = 0; |
| 184 | struct soc_camera_device *icd = pcdev->icd; |
| 185 | |
| 186 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset */ |
| 187 | |
| 188 | /* wait CSTSR.CPTON bit */ |
| 189 | for (i = 0; i < 1000; i++) { |
| 190 | if (!(ceu_read(pcdev, CSTSR) & 1)) { |
| 191 | success++; |
| 192 | break; |
| 193 | } |
| 194 | udelay(1); |
| 195 | } |
| 196 | |
| 197 | /* wait CAPSR.CPKIL bit */ |
| 198 | for (i = 0; i < 1000; i++) { |
| 199 | if (!(ceu_read(pcdev, CAPSR) & (1 << 16))) { |
| 200 | success++; |
| 201 | break; |
| 202 | } |
| 203 | udelay(1); |
| 204 | } |
| 205 | |
| 206 | |
| 207 | if (2 != success) { |
| 208 | dev_warn(&icd->dev, "soft reset time out\n"); |
| 209 | return -EIO; |
| 210 | } |
| 211 | |
| 212 | return 0; |
| 213 | } |
| 214 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 215 | /* |
| 216 | * Videobuf operations |
| 217 | */ |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 218 | static int sh_mobile_ceu_videobuf_setup(struct vb2_queue *vq, |
| 219 | unsigned int *count, unsigned int *num_planes, |
| 220 | unsigned long sizes[], void *alloc_ctxs[]) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 221 | { |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 222 | struct soc_camera_device *icd = container_of(vq, struct soc_camera_device, vb2_vidq); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 223 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 224 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 225 | int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, |
| 226 | icd->current_fmt->host_fmt); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 227 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 228 | if (bytes_per_line < 0) |
| 229 | return bytes_per_line; |
| 230 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 231 | *num_planes = 1; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 232 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 233 | pcdev->sequence = 0; |
| 234 | sizes[0] = bytes_per_line * icd->user_height; |
| 235 | alloc_ctxs[0] = pcdev->alloc_ctx; |
| 236 | |
| 237 | if (!*count) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 238 | *count = 2; |
| 239 | |
| 240 | if (pcdev->video_limit) { |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 241 | if (PAGE_ALIGN(sizes[0]) * *count > pcdev->video_limit) |
| 242 | *count = pcdev->video_limit / PAGE_ALIGN(sizes[0]); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 243 | } |
| 244 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 245 | dev_dbg(icd->dev.parent, "count=%d, size=%lu\n", *count, sizes[0]); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 246 | |
| 247 | return 0; |
| 248 | } |
| 249 | |
Magnus Damm | 7a1a816 | 2008-12-18 12:50:30 -0300 | [diff] [blame] | 250 | #define CEU_CETCR_MAGIC 0x0317f313 /* acknowledge magical interrupt sources */ |
| 251 | #define CEU_CETCR_IGRW (1 << 4) /* prohibited register access interrupt bit */ |
| 252 | #define CEU_CEIER_CPEIE (1 << 0) /* one-frame capture end interrupt */ |
Kuninori Morimoto | 5cf93f1 | 2009-10-05 12:48:59 -0300 | [diff] [blame] | 253 | #define CEU_CEIER_VBP (1 << 20) /* vbp error */ |
Magnus Damm | 7a1a816 | 2008-12-18 12:50:30 -0300 | [diff] [blame] | 254 | #define CEU_CAPCR_CTNCP (1 << 16) /* continuous capture mode (if set) */ |
Kuninori Morimoto | 5cf93f1 | 2009-10-05 12:48:59 -0300 | [diff] [blame] | 255 | #define CEU_CEIER_MASK (CEU_CEIER_CPEIE | CEU_CEIER_VBP) |
Magnus Damm | 7a1a816 | 2008-12-18 12:50:30 -0300 | [diff] [blame] | 256 | |
| 257 | |
Kuninori Morimoto | 5cf93f1 | 2009-10-05 12:48:59 -0300 | [diff] [blame] | 258 | /* |
| 259 | * return value doesn't reflex the success/failure to queue the new buffer, |
| 260 | * but rather the status of the previous buffer. |
| 261 | */ |
| 262 | static int sh_mobile_ceu_capture(struct sh_mobile_ceu_dev *pcdev) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 263 | { |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 264 | struct soc_camera_device *icd = pcdev->icd; |
Kuninori Morimoto | ccab8a2 | 2008-12-18 12:51:21 -0300 | [diff] [blame] | 265 | dma_addr_t phys_addr_top, phys_addr_bottom; |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 266 | unsigned long top1, top2; |
| 267 | unsigned long bottom1, bottom2; |
Kuninori Morimoto | 5cf93f1 | 2009-10-05 12:48:59 -0300 | [diff] [blame] | 268 | u32 status; |
| 269 | int ret = 0; |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 270 | |
Guennadi Liakhovetski | 5d28d52 | 2009-12-11 11:15:05 -0300 | [diff] [blame] | 271 | /* |
| 272 | * The hardware is _very_ picky about this sequence. Especially |
Magnus Damm | 7a1a816 | 2008-12-18 12:50:30 -0300 | [diff] [blame] | 273 | * the CEU_CETCR_MAGIC value. It seems like we need to acknowledge |
| 274 | * several not-so-well documented interrupt sources in CETCR. |
| 275 | */ |
Kuninori Morimoto | 5cf93f1 | 2009-10-05 12:48:59 -0300 | [diff] [blame] | 276 | ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) & ~CEU_CEIER_MASK); |
| 277 | status = ceu_read(pcdev, CETCR); |
| 278 | ceu_write(pcdev, CETCR, ~status & CEU_CETCR_MAGIC); |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 279 | if (!pcdev->frozen) |
| 280 | ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) | CEU_CEIER_MASK); |
Magnus Damm | 7a1a816 | 2008-12-18 12:50:30 -0300 | [diff] [blame] | 281 | ceu_write(pcdev, CAPCR, ceu_read(pcdev, CAPCR) & ~CEU_CAPCR_CTNCP); |
| 282 | ceu_write(pcdev, CETCR, CEU_CETCR_MAGIC ^ CEU_CETCR_IGRW); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 283 | |
Kuninori Morimoto | 5cf93f1 | 2009-10-05 12:48:59 -0300 | [diff] [blame] | 284 | /* |
| 285 | * When a VBP interrupt occurs, a capture end interrupt does not occur |
| 286 | * and the image of that frame is not captured correctly. So, soft reset |
| 287 | * is needed here. |
| 288 | */ |
| 289 | if (status & CEU_CEIER_VBP) { |
| 290 | sh_mobile_ceu_soft_reset(pcdev); |
| 291 | ret = -EIO; |
| 292 | } |
| 293 | |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 294 | if (pcdev->frozen) { |
| 295 | complete(&pcdev->complete); |
| 296 | return ret; |
| 297 | } |
| 298 | |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 299 | if (!pcdev->active) |
Kuninori Morimoto | 5cf93f1 | 2009-10-05 12:48:59 -0300 | [diff] [blame] | 300 | return ret; |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 301 | |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 302 | if (V4L2_FIELD_INTERLACED_BT == pcdev->field) { |
| 303 | top1 = CDBYR; |
| 304 | top2 = CDBCR; |
| 305 | bottom1 = CDAYR; |
| 306 | bottom2 = CDACR; |
| 307 | } else { |
| 308 | top1 = CDAYR; |
| 309 | top2 = CDACR; |
| 310 | bottom1 = CDBYR; |
| 311 | bottom2 = CDBCR; |
| 312 | } |
| 313 | |
Pawel Osciak | d6db5bf | 2011-03-14 10:38:23 -0300 | [diff] [blame] | 314 | phys_addr_top = vb2_dma_contig_plane_paddr(pcdev->active, 0); |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 315 | |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 316 | ceu_write(pcdev, top1, phys_addr_top); |
| 317 | if (V4L2_FIELD_NONE != pcdev->field) { |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 318 | phys_addr_bottom = phys_addr_top + icd->user_width; |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 319 | ceu_write(pcdev, bottom1, phys_addr_bottom); |
Kuninori Morimoto | ccab8a2 | 2008-12-18 12:51:21 -0300 | [diff] [blame] | 320 | } |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 321 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 322 | switch (icd->current_fmt->host_fmt->fourcc) { |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 323 | case V4L2_PIX_FMT_NV12: |
| 324 | case V4L2_PIX_FMT_NV21: |
Magnus Damm | 9e4a56d | 2008-12-18 12:45:33 -0300 | [diff] [blame] | 325 | case V4L2_PIX_FMT_NV16: |
| 326 | case V4L2_PIX_FMT_NV61: |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 327 | phys_addr_top += icd->user_width * |
| 328 | icd->user_height; |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 329 | ceu_write(pcdev, top2, phys_addr_top); |
| 330 | if (V4L2_FIELD_NONE != pcdev->field) { |
| 331 | phys_addr_bottom = phys_addr_top + icd->user_width; |
| 332 | ceu_write(pcdev, bottom2, phys_addr_bottom); |
Kuninori Morimoto | ccab8a2 | 2008-12-18 12:51:21 -0300 | [diff] [blame] | 333 | } |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 334 | } |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 335 | |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 336 | ceu_write(pcdev, CAPSR, 0x1); /* start capture */ |
Kuninori Morimoto | 5cf93f1 | 2009-10-05 12:48:59 -0300 | [diff] [blame] | 337 | |
| 338 | return ret; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 339 | } |
| 340 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 341 | static int sh_mobile_ceu_videobuf_prepare(struct vb2_buffer *vb) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 342 | { |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 343 | 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] | 344 | struct sh_mobile_ceu_buffer *buf; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 345 | int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, |
| 346 | icd->current_fmt->host_fmt); |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 347 | unsigned long size; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 348 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 349 | if (bytes_per_line < 0) |
| 350 | return bytes_per_line; |
| 351 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 352 | buf = to_ceu_vb(vb); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 353 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 354 | dev_dbg(icd->dev.parent, "%s (vb=0x%p) 0x%p %lu\n", __func__, |
| 355 | vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0)); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 356 | |
| 357 | /* Added list head initialization on alloc */ |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 358 | WARN(!list_empty(&buf->queue), "Buffer %p on queue!\n", vb); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 359 | |
| 360 | #ifdef DEBUG |
Guennadi Liakhovetski | 5d28d52 | 2009-12-11 11:15:05 -0300 | [diff] [blame] | 361 | /* |
| 362 | * This can be useful if you want to see if we actually fill |
| 363 | * the buffer with something |
| 364 | */ |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 365 | if (vb2_plane_vaddr(vb, 0)) |
| 366 | 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] | 367 | #endif |
| 368 | |
| 369 | BUG_ON(NULL == icd->current_fmt); |
| 370 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 371 | size = icd->user_height * bytes_per_line; |
| 372 | |
| 373 | if (vb2_plane_size(vb, 0) < size) { |
| 374 | dev_err(icd->dev.parent, "Buffer too small (%lu < %lu)\n", |
| 375 | vb2_plane_size(vb, 0), size); |
| 376 | return -ENOBUFS; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 377 | } |
| 378 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 379 | vb2_set_plane_payload(vb, 0, size); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 380 | |
| 381 | return 0; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 382 | } |
| 383 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 384 | static void sh_mobile_ceu_videobuf_queue(struct vb2_buffer *vb) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 385 | { |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 386 | 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] | 387 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 388 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 389 | struct sh_mobile_ceu_buffer *buf = to_ceu_vb(vb); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 390 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 391 | dev_dbg(icd->dev.parent, "%s (vb=0x%p) 0x%p %lu\n", __func__, |
| 392 | vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0)); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 393 | |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 394 | spin_lock_irq(&pcdev->lock); |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 395 | list_add_tail(&buf->queue, &pcdev->capture); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 396 | |
| 397 | if (!pcdev->active) { |
Kuninori Morimoto | 5cf93f1 | 2009-10-05 12:48:59 -0300 | [diff] [blame] | 398 | /* |
| 399 | * Because there were no active buffer at this moment, |
| 400 | * we are not interested in the return value of |
| 401 | * sh_mobile_ceu_capture here. |
| 402 | */ |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 403 | pcdev->active = vb; |
| 404 | sh_mobile_ceu_capture(pcdev); |
| 405 | } |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 406 | spin_unlock_irq(&pcdev->lock); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 407 | } |
| 408 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 409 | static void sh_mobile_ceu_videobuf_release(struct vb2_buffer *vb) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 410 | { |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 411 | struct soc_camera_device *icd = container_of(vb->vb2_queue, struct soc_camera_device, vb2_vidq); |
Guennadi Liakhovetski | cca0e549 | 2009-08-25 11:46:51 -0300 | [diff] [blame] | 412 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 413 | struct sh_mobile_ceu_buffer *buf = to_ceu_vb(vb); |
Guennadi Liakhovetski | cca0e549 | 2009-08-25 11:46:51 -0300 | [diff] [blame] | 414 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Guennadi Liakhovetski | cca0e549 | 2009-08-25 11:46:51 -0300 | [diff] [blame] | 415 | |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 416 | spin_lock_irq(&pcdev->lock); |
Guennadi Liakhovetski | cca0e549 | 2009-08-25 11:46:51 -0300 | [diff] [blame] | 417 | |
| 418 | if (pcdev->active == vb) { |
| 419 | /* disable capture (release DMA buffer), reset */ |
| 420 | ceu_write(pcdev, CAPSR, 1 << 16); |
| 421 | pcdev->active = NULL; |
| 422 | } |
| 423 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 424 | /* Doesn't hurt also if the list is empty */ |
| 425 | list_del_init(&buf->queue); |
Guennadi Liakhovetski | cca0e549 | 2009-08-25 11:46:51 -0300 | [diff] [blame] | 426 | |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 427 | spin_unlock_irq(&pcdev->lock); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 428 | } |
| 429 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 430 | static int sh_mobile_ceu_videobuf_init(struct vb2_buffer *vb) |
| 431 | { |
| 432 | /* This is for locking debugging only */ |
| 433 | INIT_LIST_HEAD(&to_ceu_vb(vb)->queue); |
| 434 | return 0; |
| 435 | } |
| 436 | |
Guennadi Liakhovetski | 066f786 | 2011-03-24 12:51:07 -0300 | [diff] [blame] | 437 | static int sh_mobile_ceu_stop_streaming(struct vb2_queue *q) |
| 438 | { |
| 439 | struct soc_camera_device *icd = container_of(q, struct soc_camera_device, vb2_vidq); |
| 440 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 441 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
| 442 | struct list_head *buf_head, *tmp; |
Guennadi Liakhovetski | 066f786 | 2011-03-24 12:51:07 -0300 | [diff] [blame] | 443 | |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 444 | spin_lock_irq(&pcdev->lock); |
Guennadi Liakhovetski | 066f786 | 2011-03-24 12:51:07 -0300 | [diff] [blame] | 445 | |
| 446 | pcdev->active = NULL; |
| 447 | |
| 448 | list_for_each_safe(buf_head, tmp, &pcdev->capture) |
| 449 | list_del_init(buf_head); |
| 450 | |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 451 | spin_unlock_irq(&pcdev->lock); |
Guennadi Liakhovetski | 066f786 | 2011-03-24 12:51:07 -0300 | [diff] [blame] | 452 | |
| 453 | return sh_mobile_ceu_soft_reset(pcdev); |
| 454 | } |
| 455 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 456 | static struct vb2_ops sh_mobile_ceu_videobuf_ops = { |
| 457 | .queue_setup = sh_mobile_ceu_videobuf_setup, |
| 458 | .buf_prepare = sh_mobile_ceu_videobuf_prepare, |
| 459 | .buf_queue = sh_mobile_ceu_videobuf_queue, |
| 460 | .buf_cleanup = sh_mobile_ceu_videobuf_release, |
| 461 | .buf_init = sh_mobile_ceu_videobuf_init, |
| 462 | .wait_prepare = soc_camera_unlock, |
| 463 | .wait_finish = soc_camera_lock, |
Guennadi Liakhovetski | 066f786 | 2011-03-24 12:51:07 -0300 | [diff] [blame] | 464 | .stop_streaming = sh_mobile_ceu_stop_streaming, |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 465 | }; |
| 466 | |
| 467 | static irqreturn_t sh_mobile_ceu_irq(int irq, void *data) |
| 468 | { |
| 469 | struct sh_mobile_ceu_dev *pcdev = data; |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 470 | struct vb2_buffer *vb; |
| 471 | int ret; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 472 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 473 | spin_lock(&pcdev->lock); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 474 | |
| 475 | vb = pcdev->active; |
Guennadi Liakhovetski | cca0e549 | 2009-08-25 11:46:51 -0300 | [diff] [blame] | 476 | if (!vb) |
| 477 | /* Stale interrupt from a released buffer */ |
| 478 | goto out; |
| 479 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 480 | list_del_init(&to_ceu_vb(vb)->queue); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 481 | |
| 482 | if (!list_empty(&pcdev->capture)) |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 483 | pcdev->active = &list_entry(pcdev->capture.next, |
| 484 | struct sh_mobile_ceu_buffer, queue)->vb; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 485 | else |
| 486 | pcdev->active = NULL; |
| 487 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 488 | ret = sh_mobile_ceu_capture(pcdev); |
| 489 | do_gettimeofday(&vb->v4l2_buf.timestamp); |
| 490 | if (!ret) { |
| 491 | vb->v4l2_buf.field = pcdev->field; |
| 492 | vb->v4l2_buf.sequence = pcdev->sequence++; |
| 493 | } |
| 494 | 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] | 495 | |
| 496 | out: |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 497 | spin_unlock(&pcdev->lock); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 498 | |
| 499 | return IRQ_HANDLED; |
| 500 | } |
| 501 | |
Guennadi Liakhovetski | 1c3bb74 | 2008-12-18 12:28:54 -0300 | [diff] [blame] | 502 | /* Called with .video_lock held */ |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 503 | static int sh_mobile_ceu_add_device(struct soc_camera_device *icd) |
| 504 | { |
| 505 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 506 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Guennadi Liakhovetski | 6ed7c03 | 2009-12-11 11:15:06 -0300 | [diff] [blame] | 507 | int ret; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 508 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 509 | if (pcdev->icd) |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 510 | return -EBUSY; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 511 | |
Guennadi Liakhovetski | 0166b74 | 2009-08-25 11:47:00 -0300 | [diff] [blame] | 512 | dev_info(icd->dev.parent, |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 513 | "SuperH Mobile CEU driver attached to camera %d\n", |
| 514 | icd->devnum); |
| 515 | |
Guennadi Liakhovetski | a79aebf | 2009-09-25 13:36:51 +0900 | [diff] [blame] | 516 | pm_runtime_get_sync(ici->v4l2_dev.dev); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 517 | |
Guennadi Liakhovetski | 6ed7c03 | 2009-12-11 11:15:06 -0300 | [diff] [blame] | 518 | ret = sh_mobile_ceu_soft_reset(pcdev); |
| 519 | if (!ret) |
| 520 | pcdev->icd = icd; |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 521 | |
Guennadi Liakhovetski | 6ed7c03 | 2009-12-11 11:15:06 -0300 | [diff] [blame] | 522 | return ret; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 523 | } |
| 524 | |
Guennadi Liakhovetski | 1c3bb74 | 2008-12-18 12:28:54 -0300 | [diff] [blame] | 525 | /* Called with .video_lock held */ |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 526 | static void sh_mobile_ceu_remove_device(struct soc_camera_device *icd) |
| 527 | { |
| 528 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 529 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
| 530 | |
| 531 | BUG_ON(icd != pcdev->icd); |
| 532 | |
| 533 | /* disable capture, disable interrupts */ |
| 534 | ceu_write(pcdev, CEIER, 0); |
Kuninori Morimoto | b1de7ae | 2009-10-05 12:48:20 -0300 | [diff] [blame] | 535 | sh_mobile_ceu_soft_reset(pcdev); |
Magnus Damm | 51354cc | 2008-10-16 19:51:20 -0300 | [diff] [blame] | 536 | |
| 537 | /* make sure active buffer is canceled */ |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 538 | spin_lock_irq(&pcdev->lock); |
Magnus Damm | 51354cc | 2008-10-16 19:51:20 -0300 | [diff] [blame] | 539 | if (pcdev->active) { |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 540 | list_del_init(&to_ceu_vb(pcdev->active)->queue); |
| 541 | vb2_buffer_done(pcdev->active, VB2_BUF_STATE_ERROR); |
Magnus Damm | 51354cc | 2008-10-16 19:51:20 -0300 | [diff] [blame] | 542 | pcdev->active = NULL; |
| 543 | } |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 544 | spin_unlock_irq(&pcdev->lock); |
Magnus Damm | 51354cc | 2008-10-16 19:51:20 -0300 | [diff] [blame] | 545 | |
Guennadi Liakhovetski | a79aebf | 2009-09-25 13:36:51 +0900 | [diff] [blame] | 546 | pm_runtime_put_sync(ici->v4l2_dev.dev); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 547 | |
Guennadi Liakhovetski | 0166b74 | 2009-08-25 11:47:00 -0300 | [diff] [blame] | 548 | dev_info(icd->dev.parent, |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 549 | "SuperH Mobile CEU driver detached from camera %d\n", |
| 550 | icd->devnum); |
| 551 | |
| 552 | pcdev->icd = NULL; |
| 553 | } |
| 554 | |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 555 | /* |
| 556 | * See chapter 29.4.12 "Capture Filter Control Register (CFLCR)" |
| 557 | * in SH7722 Hardware Manual |
| 558 | */ |
| 559 | static unsigned int size_dst(unsigned int src, unsigned int scale) |
| 560 | { |
| 561 | unsigned int mant_pre = scale >> 12; |
| 562 | if (!src || !scale) |
| 563 | return src; |
| 564 | return ((mant_pre + 2 * (src - 1)) / (2 * mant_pre) - 1) * |
| 565 | mant_pre * 4096 / scale + 1; |
| 566 | } |
| 567 | |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 568 | static u16 calc_scale(unsigned int src, unsigned int *dst) |
| 569 | { |
| 570 | u16 scale; |
| 571 | |
| 572 | if (src == *dst) |
| 573 | return 0; |
| 574 | |
| 575 | scale = (src * 4096 / *dst) & ~7; |
| 576 | |
| 577 | while (scale > 4096 && size_dst(src, scale) < *dst) |
| 578 | scale -= 8; |
| 579 | |
| 580 | *dst = size_dst(src, scale); |
| 581 | |
| 582 | return scale; |
| 583 | } |
| 584 | |
| 585 | /* rect is guaranteed to not exceed the scaled camera rectangle */ |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 586 | static void sh_mobile_ceu_set_rect(struct soc_camera_device *icd) |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 587 | { |
| 588 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 589 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
| 590 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 591 | unsigned int height, width, cdwdr_width, in_width, in_height; |
| 592 | unsigned int left_offset, top_offset; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 593 | u32 camor; |
| 594 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 595 | dev_geo(icd->dev.parent, "Crop %ux%u@%u:%u\n", |
| 596 | icd->user_width, icd->user_height, cam->ceu_left, cam->ceu_top); |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 597 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 598 | left_offset = cam->ceu_left; |
| 599 | top_offset = cam->ceu_top; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 600 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 601 | /* CEU cropping (CFSZR) is applied _after_ the scaling filter (CFLCR) */ |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 602 | if (pcdev->image_mode) { |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 603 | in_width = cam->width; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 604 | if (!pcdev->is_16bit) { |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 605 | in_width *= 2; |
| 606 | left_offset *= 2; |
| 607 | } |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 608 | width = icd->user_width; |
| 609 | cdwdr_width = icd->user_width; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 610 | } else { |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 611 | int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 612 | icd->current_fmt->host_fmt); |
| 613 | unsigned int w_factor; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 614 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 615 | width = icd->user_width; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 616 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 617 | switch (icd->current_fmt->host_fmt->packing) { |
| 618 | case SOC_MBUS_PACKING_2X8_PADHI: |
| 619 | w_factor = 2; |
| 620 | break; |
| 621 | default: |
| 622 | w_factor = 1; |
| 623 | } |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 624 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 625 | in_width = cam->width * w_factor; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 626 | left_offset = left_offset * w_factor; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 627 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 628 | if (bytes_per_line < 0) |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 629 | cdwdr_width = icd->user_width; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 630 | else |
| 631 | cdwdr_width = bytes_per_line; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 632 | } |
| 633 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 634 | height = icd->user_height; |
| 635 | in_height = cam->height; |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 636 | if (V4L2_FIELD_NONE != pcdev->field) { |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 637 | height /= 2; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 638 | in_height /= 2; |
| 639 | top_offset /= 2; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 640 | cdwdr_width *= 2; |
| 641 | } |
| 642 | |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 643 | /* CSI2 special configuration */ |
| 644 | if (pcdev->pdata->csi2_dev) { |
| 645 | in_width = ((in_width - 2) * 2); |
| 646 | left_offset *= 2; |
| 647 | } |
| 648 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 649 | /* Set CAMOR, CAPWR, CFSZR, take care of CDWDR */ |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 650 | camor = left_offset | (top_offset << 16); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 651 | |
| 652 | dev_geo(icd->dev.parent, |
| 653 | "CAMOR 0x%x, CAPWR 0x%x, CFSZR 0x%x, CDWDR 0x%x\n", camor, |
| 654 | (in_height << 16) | in_width, (height << 16) | width, |
| 655 | cdwdr_width); |
| 656 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 657 | ceu_write(pcdev, CAMOR, camor); |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 658 | ceu_write(pcdev, CAPWR, (in_height << 16) | in_width); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 659 | ceu_write(pcdev, CFSZR, (height << 16) | width); |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 660 | ceu_write(pcdev, CDWDR, cdwdr_width); |
| 661 | } |
| 662 | |
| 663 | static u32 capture_save_reset(struct sh_mobile_ceu_dev *pcdev) |
| 664 | { |
| 665 | u32 capsr = ceu_read(pcdev, CAPSR); |
| 666 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset, stop capture */ |
| 667 | return capsr; |
| 668 | } |
| 669 | |
| 670 | static void capture_restore(struct sh_mobile_ceu_dev *pcdev, u32 capsr) |
| 671 | { |
| 672 | unsigned long timeout = jiffies + 10 * HZ; |
| 673 | |
| 674 | /* |
| 675 | * Wait until the end of the current frame. It can take a long time, |
| 676 | * but if it has been aborted by a CAPSR reset, it shoule exit sooner. |
| 677 | */ |
| 678 | while ((ceu_read(pcdev, CSTSR) & 1) && time_before(jiffies, timeout)) |
| 679 | msleep(1); |
| 680 | |
| 681 | if (time_after(jiffies, timeout)) { |
| 682 | dev_err(pcdev->ici.v4l2_dev.dev, |
| 683 | "Timeout waiting for frame end! Interface problem?\n"); |
| 684 | return; |
| 685 | } |
| 686 | |
| 687 | /* Wait until reset clears, this shall not hang... */ |
| 688 | while (ceu_read(pcdev, CAPSR) & (1 << 16)) |
| 689 | udelay(10); |
| 690 | |
| 691 | /* Anything to restore? */ |
| 692 | if (capsr & ~(1 << 16)) |
| 693 | ceu_write(pcdev, CAPSR, capsr); |
| 694 | } |
| 695 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 696 | /* Capture is not running, no interrupts, no locking needed */ |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 697 | static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd, |
| 698 | __u32 pixfmt) |
| 699 | { |
| 700 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 701 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 702 | int ret; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 703 | unsigned long camera_flags, common_flags, value; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 704 | int yuv_lineskip; |
| 705 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
| 706 | u32 capsr = capture_save_reset(pcdev); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 707 | |
| 708 | camera_flags = icd->ops->query_bus_param(icd); |
| 709 | common_flags = soc_camera_bus_param_compatible(camera_flags, |
Kuninori Morimoto | c354b40 | 2009-02-23 12:12:58 -0300 | [diff] [blame] | 710 | make_bus_param(pcdev)); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 711 | if (!common_flags) |
| 712 | return -EINVAL; |
| 713 | |
Kuninori Morimoto | 85dc1cf | 2009-12-11 11:53:54 -0300 | [diff] [blame] | 714 | /* Make choises, based on platform preferences */ |
| 715 | if ((common_flags & SOCAM_HSYNC_ACTIVE_HIGH) && |
| 716 | (common_flags & SOCAM_HSYNC_ACTIVE_LOW)) { |
| 717 | if (pcdev->pdata->flags & SH_CEU_FLAG_HSYNC_LOW) |
| 718 | common_flags &= ~SOCAM_HSYNC_ACTIVE_HIGH; |
| 719 | else |
| 720 | common_flags &= ~SOCAM_HSYNC_ACTIVE_LOW; |
| 721 | } |
| 722 | |
| 723 | if ((common_flags & SOCAM_VSYNC_ACTIVE_HIGH) && |
| 724 | (common_flags & SOCAM_VSYNC_ACTIVE_LOW)) { |
| 725 | if (pcdev->pdata->flags & SH_CEU_FLAG_VSYNC_LOW) |
| 726 | common_flags &= ~SOCAM_VSYNC_ACTIVE_HIGH; |
| 727 | else |
| 728 | common_flags &= ~SOCAM_VSYNC_ACTIVE_LOW; |
| 729 | } |
| 730 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 731 | ret = icd->ops->set_bus_param(icd, common_flags); |
| 732 | if (ret < 0) |
| 733 | return ret; |
| 734 | |
| 735 | switch (common_flags & SOCAM_DATAWIDTH_MASK) { |
| 736 | case SOCAM_DATAWIDTH_8: |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 737 | pcdev->is_16bit = 0; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 738 | break; |
| 739 | case SOCAM_DATAWIDTH_16: |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 740 | pcdev->is_16bit = 1; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 741 | break; |
| 742 | default: |
| 743 | return -EINVAL; |
| 744 | } |
| 745 | |
| 746 | ceu_write(pcdev, CRCNTR, 0); |
| 747 | ceu_write(pcdev, CRCMPR, 0); |
| 748 | |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 749 | value = 0x00000010; /* data fetch by default */ |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 750 | yuv_lineskip = 0; |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 751 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 752 | switch (icd->current_fmt->host_fmt->fourcc) { |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 753 | case V4L2_PIX_FMT_NV12: |
| 754 | case V4L2_PIX_FMT_NV21: |
| 755 | yuv_lineskip = 1; /* skip for NV12/21, no skip for NV16/61 */ |
Magnus Damm | 9e4a56d | 2008-12-18 12:45:33 -0300 | [diff] [blame] | 756 | /* fall-through */ |
| 757 | case V4L2_PIX_FMT_NV16: |
| 758 | case V4L2_PIX_FMT_NV61: |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 759 | switch (cam->code) { |
Guennadi Liakhovetski | ace6e97 | 2010-07-22 16:52:51 -0300 | [diff] [blame] | 760 | case V4L2_MBUS_FMT_UYVY8_2X8: |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 761 | value = 0x00000000; /* Cb0, Y0, Cr0, Y1 */ |
| 762 | break; |
Guennadi Liakhovetski | ace6e97 | 2010-07-22 16:52:51 -0300 | [diff] [blame] | 763 | case V4L2_MBUS_FMT_VYUY8_2X8: |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 764 | value = 0x00000100; /* Cr0, Y0, Cb0, Y1 */ |
| 765 | break; |
Guennadi Liakhovetski | ace6e97 | 2010-07-22 16:52:51 -0300 | [diff] [blame] | 766 | case V4L2_MBUS_FMT_YUYV8_2X8: |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 767 | value = 0x00000200; /* Y0, Cb0, Y1, Cr0 */ |
| 768 | break; |
Guennadi Liakhovetski | ace6e97 | 2010-07-22 16:52:51 -0300 | [diff] [blame] | 769 | case V4L2_MBUS_FMT_YVYU8_2X8: |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 770 | value = 0x00000300; /* Y0, Cr0, Y1, Cb0 */ |
| 771 | break; |
| 772 | default: |
| 773 | BUG(); |
| 774 | } |
| 775 | } |
| 776 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 777 | if (icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_NV21 || |
| 778 | icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_NV61) |
Magnus Damm | 9e4a56d | 2008-12-18 12:45:33 -0300 | [diff] [blame] | 779 | value ^= 0x00000100; /* swap U, V to change from NV1x->NVx1 */ |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 780 | |
Magnus Damm | 7a1a816 | 2008-12-18 12:50:30 -0300 | [diff] [blame] | 781 | value |= common_flags & SOCAM_VSYNC_ACTIVE_LOW ? 1 << 1 : 0; |
| 782 | value |= common_flags & SOCAM_HSYNC_ACTIVE_LOW ? 1 << 0 : 0; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 783 | value |= pcdev->is_16bit ? 1 << 12 : 0; |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 784 | |
| 785 | /* CSI2 mode */ |
| 786 | if (pcdev->pdata->csi2_dev) |
| 787 | value |= 3 << 12; |
| 788 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 789 | ceu_write(pcdev, CAMCR, value); |
| 790 | |
| 791 | ceu_write(pcdev, CAPCR, 0x00300000); |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 792 | |
| 793 | switch (pcdev->field) { |
| 794 | case V4L2_FIELD_INTERLACED_TB: |
| 795 | value = 0x101; |
| 796 | break; |
| 797 | case V4L2_FIELD_INTERLACED_BT: |
| 798 | value = 0x102; |
| 799 | break; |
| 800 | default: |
| 801 | value = 0; |
| 802 | break; |
| 803 | } |
| 804 | ceu_write(pcdev, CAIFR, value); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 805 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 806 | sh_mobile_ceu_set_rect(icd); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 807 | mdelay(1); |
| 808 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 809 | dev_geo(icd->dev.parent, "CFLCR 0x%x\n", pcdev->cflcr); |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 810 | ceu_write(pcdev, CFLCR, pcdev->cflcr); |
Magnus Damm | dd54203 | 2008-10-16 19:50:22 -0300 | [diff] [blame] | 811 | |
Guennadi Liakhovetski | 5d28d52 | 2009-12-11 11:15:05 -0300 | [diff] [blame] | 812 | /* |
| 813 | * A few words about byte order (observed in Big Endian mode) |
Magnus Damm | dd54203 | 2008-10-16 19:50:22 -0300 | [diff] [blame] | 814 | * |
| 815 | * In data fetch mode bytes are received in chunks of 8 bytes. |
| 816 | * D0, D1, D2, D3, D4, D5, D6, D7 (D0 received first) |
| 817 | * |
| 818 | * The data is however by default written to memory in reverse order: |
| 819 | * D7, D6, D5, D4, D3, D2, D1, D0 (D7 written to lowest byte) |
| 820 | * |
| 821 | * The lowest three bits of CDOCR allows us to do swapping, |
Magnus Damm | 2c0a072 | 2008-10-16 19:50:56 -0300 | [diff] [blame] | 822 | * using 7 we swap the data bytes to match the incoming order: |
| 823 | * D0, D1, D2, D3, D4, D5, D6, D7 |
Magnus Damm | dd54203 | 2008-10-16 19:50:22 -0300 | [diff] [blame] | 824 | */ |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 825 | value = 0x00000017; |
| 826 | if (yuv_lineskip) |
| 827 | value &= ~0x00000010; /* convert 4:2:2 -> 4:2:0 */ |
| 828 | |
| 829 | ceu_write(pcdev, CDOCR, value); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 830 | ceu_write(pcdev, CFWCR, 0); /* keep "datafetch firewall" disabled */ |
| 831 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 832 | dev_dbg(icd->dev.parent, "S_FMT successful for %c%c%c%c %ux%u\n", |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 833 | pixfmt & 0xff, (pixfmt >> 8) & 0xff, |
| 834 | (pixfmt >> 16) & 0xff, (pixfmt >> 24) & 0xff, |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 835 | icd->user_width, icd->user_height); |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 836 | |
| 837 | capture_restore(pcdev, capsr); |
| 838 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 839 | /* not in bundle mode: skip CBDSR, CDAYR2, CDACR2, CDBYR2, CDBCR2 */ |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 840 | return 0; |
| 841 | } |
| 842 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 843 | static int sh_mobile_ceu_try_bus_param(struct soc_camera_device *icd, |
| 844 | unsigned char buswidth) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 845 | { |
| 846 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 847 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
| 848 | unsigned long camera_flags, common_flags; |
| 849 | |
| 850 | camera_flags = icd->ops->query_bus_param(icd); |
| 851 | common_flags = soc_camera_bus_param_compatible(camera_flags, |
Kuninori Morimoto | c354b40 | 2009-02-23 12:12:58 -0300 | [diff] [blame] | 852 | make_bus_param(pcdev)); |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 853 | if (!common_flags || buswidth > 16 || |
| 854 | (buswidth > 8 && !(common_flags & SOCAM_DATAWIDTH_16))) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 855 | return -EINVAL; |
| 856 | |
| 857 | return 0; |
| 858 | } |
| 859 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 860 | static const struct soc_mbus_pixelfmt sh_mobile_ceu_formats[] = { |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 861 | { |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 862 | .fourcc = V4L2_PIX_FMT_NV12, |
| 863 | .name = "NV12", |
| 864 | .bits_per_sample = 12, |
| 865 | .packing = SOC_MBUS_PACKING_NONE, |
| 866 | .order = SOC_MBUS_ORDER_LE, |
| 867 | }, { |
| 868 | .fourcc = V4L2_PIX_FMT_NV21, |
| 869 | .name = "NV21", |
| 870 | .bits_per_sample = 12, |
| 871 | .packing = SOC_MBUS_PACKING_NONE, |
| 872 | .order = SOC_MBUS_ORDER_LE, |
| 873 | }, { |
| 874 | .fourcc = V4L2_PIX_FMT_NV16, |
| 875 | .name = "NV16", |
| 876 | .bits_per_sample = 16, |
| 877 | .packing = SOC_MBUS_PACKING_NONE, |
| 878 | .order = SOC_MBUS_ORDER_LE, |
| 879 | }, { |
| 880 | .fourcc = V4L2_PIX_FMT_NV61, |
| 881 | .name = "NV61", |
| 882 | .bits_per_sample = 16, |
| 883 | .packing = SOC_MBUS_PACKING_NONE, |
| 884 | .order = SOC_MBUS_ORDER_LE, |
Magnus Damm | 9e4a56d | 2008-12-18 12:45:33 -0300 | [diff] [blame] | 885 | }, |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 886 | }; |
| 887 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 888 | /* This will be corrected as we get more formats */ |
| 889 | static bool sh_mobile_ceu_packing_supported(const struct soc_mbus_pixelfmt *fmt) |
| 890 | { |
| 891 | return fmt->packing == SOC_MBUS_PACKING_NONE || |
| 892 | (fmt->bits_per_sample == 8 && |
| 893 | fmt->packing == SOC_MBUS_PACKING_2X8_PADHI) || |
| 894 | (fmt->bits_per_sample > 8 && |
| 895 | fmt->packing == SOC_MBUS_PACKING_EXTEND16); |
| 896 | } |
| 897 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 898 | static int client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect); |
| 899 | |
Hans Verkuil | 3805f20 | 2010-05-08 17:55:00 -0300 | [diff] [blame] | 900 | 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] | 901 | struct soc_camera_format_xlate *xlate) |
| 902 | { |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 903 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 904 | struct device *dev = icd->dev.parent; |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 905 | struct soc_camera_host *ici = to_soc_camera_host(dev); |
| 906 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 907 | int ret, k, n; |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 908 | int formats = 0; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 909 | struct sh_mobile_ceu_cam *cam; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 910 | enum v4l2_mbus_pixelcode code; |
| 911 | const struct soc_mbus_pixelfmt *fmt; |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 912 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 913 | ret = v4l2_subdev_call(sd, video, enum_mbus_fmt, idx, &code); |
| 914 | if (ret < 0) |
| 915 | /* No more formats */ |
| 916 | return 0; |
| 917 | |
| 918 | fmt = soc_mbus_get_fmtdesc(code); |
| 919 | if (!fmt) { |
Guennadi Liakhovetski | d2dcad4 | 2011-05-18 06:49:54 -0300 | [diff] [blame] | 920 | dev_warn(dev, "unsupported format code #%u: %d\n", idx, code); |
| 921 | return 0; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 922 | } |
| 923 | |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 924 | if (!pcdev->pdata->csi2_dev) { |
| 925 | ret = sh_mobile_ceu_try_bus_param(icd, fmt->bits_per_sample); |
| 926 | if (ret < 0) |
| 927 | return 0; |
| 928 | } |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 929 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 930 | if (!icd->host_priv) { |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 931 | struct v4l2_mbus_framefmt mf; |
| 932 | struct v4l2_rect rect; |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 933 | int shift = 0; |
| 934 | |
| 935 | /* FIXME: subwindow is lost between close / open */ |
| 936 | |
| 937 | /* Cache current client geometry */ |
| 938 | ret = client_g_rect(sd, &rect); |
| 939 | if (ret < 0) |
| 940 | return ret; |
| 941 | |
| 942 | /* First time */ |
| 943 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); |
| 944 | if (ret < 0) |
| 945 | return ret; |
| 946 | |
| 947 | while ((mf.width > 2560 || mf.height > 1920) && shift < 4) { |
| 948 | /* Try 2560x1920, 1280x960, 640x480, 320x240 */ |
| 949 | mf.width = 2560 >> shift; |
| 950 | mf.height = 1920 >> shift; |
Guennadi Liakhovetski | 24105eb | 2011-03-23 05:41:28 -0300 | [diff] [blame] | 951 | ret = v4l2_device_call_until_err(sd->v4l2_dev, (long)icd, video, |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 952 | s_mbus_fmt, &mf); |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 953 | if (ret < 0) |
| 954 | return ret; |
| 955 | shift++; |
| 956 | } |
| 957 | |
| 958 | if (shift == 4) { |
| 959 | dev_err(dev, "Failed to configure the client below %ux%x\n", |
| 960 | mf.width, mf.height); |
| 961 | return -EIO; |
| 962 | } |
| 963 | |
| 964 | dev_geo(dev, "camera fmt %ux%u\n", mf.width, mf.height); |
| 965 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 966 | cam = kzalloc(sizeof(*cam), GFP_KERNEL); |
| 967 | if (!cam) |
| 968 | return -ENOMEM; |
| 969 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 970 | /* We are called with current camera crop, initialise subrect with it */ |
| 971 | cam->rect = rect; |
| 972 | cam->subrect = rect; |
| 973 | |
| 974 | cam->width = mf.width; |
| 975 | cam->height = mf.height; |
| 976 | |
| 977 | cam->width = mf.width; |
| 978 | cam->height = mf.height; |
| 979 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 980 | icd->host_priv = cam; |
| 981 | } else { |
| 982 | cam = icd->host_priv; |
| 983 | } |
| 984 | |
Guennadi Liakhovetski | c8329ac | 2009-02-23 12:12:58 -0300 | [diff] [blame] | 985 | /* Beginning of a pass */ |
| 986 | if (!idx) |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 987 | cam->extra_fmt = NULL; |
Guennadi Liakhovetski | c8329ac | 2009-02-23 12:12:58 -0300 | [diff] [blame] | 988 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 989 | switch (code) { |
Guennadi Liakhovetski | ace6e97 | 2010-07-22 16:52:51 -0300 | [diff] [blame] | 990 | case V4L2_MBUS_FMT_UYVY8_2X8: |
| 991 | case V4L2_MBUS_FMT_VYUY8_2X8: |
| 992 | case V4L2_MBUS_FMT_YUYV8_2X8: |
| 993 | case V4L2_MBUS_FMT_YVYU8_2X8: |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 994 | if (cam->extra_fmt) |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 995 | break; |
Guennadi Liakhovetski | c8329ac | 2009-02-23 12:12:58 -0300 | [diff] [blame] | 996 | |
| 997 | /* |
| 998 | * Our case is simple so far: for any of the above four camera |
| 999 | * formats we add all our four synthesized NV* formats, so, |
| 1000 | * just marking the device with a single flag suffices. If |
| 1001 | * the format generation rules are more complex, you would have |
| 1002 | * to actually hang your already added / counted formats onto |
| 1003 | * the host_priv pointer and check whether the format you're |
| 1004 | * going to add now is already there. |
| 1005 | */ |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1006 | cam->extra_fmt = sh_mobile_ceu_formats; |
Guennadi Liakhovetski | c8329ac | 2009-02-23 12:12:58 -0300 | [diff] [blame] | 1007 | |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 1008 | n = ARRAY_SIZE(sh_mobile_ceu_formats); |
| 1009 | formats += n; |
| 1010 | for (k = 0; xlate && k < n; k++) { |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1011 | xlate->host_fmt = &sh_mobile_ceu_formats[k]; |
| 1012 | xlate->code = code; |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 1013 | xlate++; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1014 | dev_dbg(dev, "Providing format %s using code %d\n", |
| 1015 | sh_mobile_ceu_formats[k].name, code); |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 1016 | } |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1017 | break; |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1018 | default: |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1019 | if (!sh_mobile_ceu_packing_supported(fmt)) |
| 1020 | return 0; |
| 1021 | } |
| 1022 | |
| 1023 | /* Generic pass-through */ |
| 1024 | formats++; |
| 1025 | if (xlate) { |
| 1026 | xlate->host_fmt = fmt; |
| 1027 | xlate->code = code; |
| 1028 | xlate++; |
| 1029 | dev_dbg(dev, "Providing format %s in pass-through mode\n", |
Guennadi Liakhovetski | e53a480 | 2010-06-18 04:20:56 -0300 | [diff] [blame] | 1030 | fmt->name); |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1031 | } |
| 1032 | |
| 1033 | return formats; |
| 1034 | } |
| 1035 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1036 | static void sh_mobile_ceu_put_formats(struct soc_camera_device *icd) |
| 1037 | { |
| 1038 | kfree(icd->host_priv); |
| 1039 | icd->host_priv = NULL; |
| 1040 | } |
| 1041 | |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1042 | /* 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] | 1043 | static bool is_smaller(struct v4l2_rect *r1, struct v4l2_rect *r2) |
| 1044 | { |
| 1045 | return r1->width < r2->width || r1->height < r2->height; |
| 1046 | } |
| 1047 | |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1048 | /* Check if r1 fails to cover r2 */ |
| 1049 | static bool is_inside(struct v4l2_rect *r1, struct v4l2_rect *r2) |
| 1050 | { |
| 1051 | return r1->left > r2->left || r1->top > r2->top || |
| 1052 | r1->left + r1->width < r2->left + r2->width || |
| 1053 | r1->top + r1->height < r2->top + r2->height; |
| 1054 | } |
| 1055 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1056 | static unsigned int scale_down(unsigned int size, unsigned int scale) |
| 1057 | { |
| 1058 | return (size * 4096 + scale / 2) / scale; |
| 1059 | } |
| 1060 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1061 | static unsigned int calc_generic_scale(unsigned int input, unsigned int output) |
| 1062 | { |
| 1063 | return (input * 4096 + output / 2) / output; |
| 1064 | } |
| 1065 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1066 | /* Get and store current client crop */ |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1067 | static int client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect) |
| 1068 | { |
| 1069 | struct v4l2_crop crop; |
| 1070 | struct v4l2_cropcap cap; |
| 1071 | int ret; |
| 1072 | |
| 1073 | crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 1074 | |
| 1075 | ret = v4l2_subdev_call(sd, video, g_crop, &crop); |
| 1076 | if (!ret) { |
| 1077 | *rect = crop.c; |
| 1078 | return ret; |
| 1079 | } |
| 1080 | |
| 1081 | /* Camera driver doesn't support .g_crop(), assume default rectangle */ |
| 1082 | cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 1083 | |
| 1084 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1085 | if (!ret) |
| 1086 | *rect = cap.defrect; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1087 | |
| 1088 | return ret; |
| 1089 | } |
| 1090 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1091 | /* Client crop has changed, update our sub-rectangle to remain within the area */ |
| 1092 | static void update_subrect(struct sh_mobile_ceu_cam *cam) |
| 1093 | { |
| 1094 | struct v4l2_rect *rect = &cam->rect, *subrect = &cam->subrect; |
| 1095 | |
| 1096 | if (rect->width < subrect->width) |
| 1097 | subrect->width = rect->width; |
| 1098 | |
| 1099 | if (rect->height < subrect->height) |
| 1100 | subrect->height = rect->height; |
| 1101 | |
| 1102 | if (rect->left > subrect->left) |
| 1103 | subrect->left = rect->left; |
| 1104 | else if (rect->left + rect->width > |
| 1105 | subrect->left + subrect->width) |
| 1106 | subrect->left = rect->left + rect->width - |
| 1107 | subrect->width; |
| 1108 | |
| 1109 | if (rect->top > subrect->top) |
| 1110 | subrect->top = rect->top; |
| 1111 | else if (rect->top + rect->height > |
| 1112 | subrect->top + subrect->height) |
| 1113 | subrect->top = rect->top + rect->height - |
| 1114 | subrect->height; |
| 1115 | } |
| 1116 | |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1117 | /* |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1118 | * The common for both scaling and cropping iterative approach is: |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1119 | * 1. try if the client can produce exactly what requested by the user |
| 1120 | * 2. if (1) failed, try to double the client image until we get one big enough |
| 1121 | * 3. if (2) failed, try to request the maximum image |
| 1122 | */ |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1123 | 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] | 1124 | struct v4l2_crop *cam_crop) |
| 1125 | { |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1126 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1127 | struct v4l2_rect *rect = &crop->c, *cam_rect = &cam_crop->c; |
| 1128 | struct device *dev = sd->v4l2_dev->dev; |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1129 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1130 | struct v4l2_cropcap cap; |
| 1131 | int ret; |
| 1132 | unsigned int width, height; |
| 1133 | |
| 1134 | v4l2_subdev_call(sd, video, s_crop, crop); |
| 1135 | ret = client_g_rect(sd, cam_rect); |
| 1136 | if (ret < 0) |
| 1137 | return ret; |
| 1138 | |
| 1139 | /* |
| 1140 | * Now cam_crop contains the current camera input rectangle, and it must |
| 1141 | * be within camera cropcap bounds |
| 1142 | */ |
| 1143 | if (!memcmp(rect, cam_rect, sizeof(*rect))) { |
| 1144 | /* Even if camera S_CROP failed, but camera rectangle matches */ |
Márton Németh | e26b314 | 2010-02-24 17:13:29 -0300 | [diff] [blame] | 1145 | 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] | 1146 | rect->width, rect->height, rect->left, rect->top); |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1147 | cam->rect = *cam_rect; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1148 | return 0; |
| 1149 | } |
| 1150 | |
| 1151 | /* Try to fix cropping, that camera hasn't managed to set */ |
Márton Németh | e26b314 | 2010-02-24 17:13:29 -0300 | [diff] [blame] | 1152 | 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] | 1153 | cam_rect->width, cam_rect->height, |
| 1154 | cam_rect->left, cam_rect->top, |
| 1155 | rect->width, rect->height, rect->left, rect->top); |
| 1156 | |
| 1157 | /* We need sensor maximum rectangle */ |
| 1158 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); |
| 1159 | if (ret < 0) |
| 1160 | return ret; |
| 1161 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1162 | /* Put user requested rectangle within sensor bounds */ |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1163 | soc_camera_limit_side(&rect->left, &rect->width, cap.bounds.left, 2, |
| 1164 | cap.bounds.width); |
| 1165 | soc_camera_limit_side(&rect->top, &rect->height, cap.bounds.top, 4, |
| 1166 | cap.bounds.height); |
| 1167 | |
| 1168 | /* |
| 1169 | * Popular special case - some cameras can only handle fixed sizes like |
| 1170 | * QVGA, VGA,... Take care to avoid infinite loop. |
| 1171 | */ |
| 1172 | width = max(cam_rect->width, 2); |
| 1173 | height = max(cam_rect->height, 2); |
| 1174 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1175 | /* |
| 1176 | * Loop as long as sensor is not covering the requested rectangle and |
| 1177 | * is still within its bounds |
| 1178 | */ |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1179 | while (!ret && (is_smaller(cam_rect, rect) || |
| 1180 | is_inside(cam_rect, rect)) && |
| 1181 | (cap.bounds.width > width || cap.bounds.height > height)) { |
| 1182 | |
| 1183 | width *= 2; |
| 1184 | height *= 2; |
| 1185 | |
| 1186 | cam_rect->width = width; |
| 1187 | cam_rect->height = height; |
| 1188 | |
| 1189 | /* |
| 1190 | * We do not know what capabilities the camera has to set up |
| 1191 | * left and top borders. We could try to be smarter in iterating |
| 1192 | * them, e.g., if camera current left is to the right of the |
| 1193 | * target left, set it to the middle point between the current |
| 1194 | * left and minimum left. But that would add too much |
| 1195 | * complexity: we would have to iterate each border separately. |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1196 | * Instead we just drop to the left and top bounds. |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1197 | */ |
| 1198 | if (cam_rect->left > rect->left) |
| 1199 | cam_rect->left = cap.bounds.left; |
| 1200 | |
| 1201 | if (cam_rect->left + cam_rect->width < rect->left + rect->width) |
| 1202 | cam_rect->width = rect->left + rect->width - |
| 1203 | cam_rect->left; |
| 1204 | |
| 1205 | if (cam_rect->top > rect->top) |
| 1206 | cam_rect->top = cap.bounds.top; |
| 1207 | |
| 1208 | if (cam_rect->top + cam_rect->height < rect->top + rect->height) |
| 1209 | cam_rect->height = rect->top + rect->height - |
| 1210 | cam_rect->top; |
| 1211 | |
| 1212 | v4l2_subdev_call(sd, video, s_crop, cam_crop); |
| 1213 | ret = client_g_rect(sd, cam_rect); |
Márton Németh | e26b314 | 2010-02-24 17:13:29 -0300 | [diff] [blame] | 1214 | 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] | 1215 | cam_rect->width, cam_rect->height, |
| 1216 | cam_rect->left, cam_rect->top); |
| 1217 | } |
| 1218 | |
| 1219 | /* S_CROP must not modify the rectangle */ |
| 1220 | if (is_smaller(cam_rect, rect) || is_inside(cam_rect, rect)) { |
| 1221 | /* |
| 1222 | * The camera failed to configure a suitable cropping, |
| 1223 | * we cannot use the current rectangle, set to max |
| 1224 | */ |
| 1225 | *cam_rect = cap.bounds; |
| 1226 | v4l2_subdev_call(sd, video, s_crop, cam_crop); |
| 1227 | ret = client_g_rect(sd, cam_rect); |
Márton Németh | e26b314 | 2010-02-24 17:13:29 -0300 | [diff] [blame] | 1228 | 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] | 1229 | cam_rect->width, cam_rect->height, |
| 1230 | cam_rect->left, cam_rect->top); |
| 1231 | } |
| 1232 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1233 | if (!ret) { |
| 1234 | cam->rect = *cam_rect; |
| 1235 | update_subrect(cam); |
| 1236 | } |
| 1237 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1238 | return ret; |
| 1239 | } |
| 1240 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1241 | /* Iterative s_mbus_fmt, also updates cached client crop on success */ |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1242 | static int client_s_fmt(struct soc_camera_device *icd, |
| 1243 | struct v4l2_mbus_framefmt *mf, bool ceu_can_scale) |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1244 | { |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1245 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1246 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| 1247 | struct device *dev = icd->dev.parent; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1248 | unsigned int width = mf->width, height = mf->height, tmp_w, tmp_h; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1249 | unsigned int max_width, max_height; |
| 1250 | struct v4l2_cropcap cap; |
| 1251 | int ret; |
| 1252 | |
Guennadi Liakhovetski | 24105eb | 2011-03-23 05:41:28 -0300 | [diff] [blame] | 1253 | ret = v4l2_device_call_until_err(sd->v4l2_dev, (long)icd, video, |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 1254 | s_mbus_fmt, mf); |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1255 | if (ret < 0) |
| 1256 | return ret; |
| 1257 | |
| 1258 | dev_geo(dev, "camera scaled to %ux%u\n", mf->width, mf->height); |
| 1259 | |
| 1260 | if ((width == mf->width && height == mf->height) || !ceu_can_scale) |
| 1261 | goto update_cache; |
| 1262 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1263 | cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 1264 | |
| 1265 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); |
| 1266 | if (ret < 0) |
| 1267 | return ret; |
| 1268 | |
| 1269 | max_width = min(cap.bounds.width, 2560); |
| 1270 | max_height = min(cap.bounds.height, 1920); |
| 1271 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1272 | /* Camera set a format, but geometry is not precise, try to improve */ |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1273 | tmp_w = mf->width; |
| 1274 | tmp_h = mf->height; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1275 | |
| 1276 | /* width <= max_width && height <= max_height - guaranteed by try_fmt */ |
| 1277 | while ((width > tmp_w || height > tmp_h) && |
| 1278 | tmp_w < max_width && tmp_h < max_height) { |
| 1279 | tmp_w = min(2 * tmp_w, max_width); |
| 1280 | tmp_h = min(2 * tmp_h, max_height); |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1281 | mf->width = tmp_w; |
| 1282 | mf->height = tmp_h; |
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 | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1285 | dev_geo(dev, "Camera scaled to %ux%u\n", |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1286 | mf->width, mf->height); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1287 | if (ret < 0) { |
| 1288 | /* This shouldn't happen */ |
| 1289 | dev_err(dev, "Client failed to set format: %d\n", ret); |
| 1290 | return ret; |
| 1291 | } |
| 1292 | } |
| 1293 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1294 | update_cache: |
| 1295 | /* Update cache */ |
| 1296 | ret = client_g_rect(sd, &cam->rect); |
| 1297 | if (ret < 0) |
| 1298 | return ret; |
| 1299 | |
| 1300 | update_subrect(cam); |
| 1301 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1302 | return 0; |
| 1303 | } |
| 1304 | |
| 1305 | /** |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1306 | * @width - on output: user width, mapped back to input |
| 1307 | * @height - on output: user height, mapped back to input |
| 1308 | * @mf - in- / output camera output window |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1309 | */ |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1310 | static int client_scale(struct soc_camera_device *icd, |
| 1311 | struct v4l2_mbus_framefmt *mf, |
| 1312 | unsigned int *width, unsigned int *height, |
| 1313 | bool ceu_can_scale) |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1314 | { |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1315 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
| 1316 | struct device *dev = icd->dev.parent; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1317 | struct v4l2_mbus_framefmt mf_tmp = *mf; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1318 | unsigned int scale_h, scale_v; |
| 1319 | int ret; |
| 1320 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1321 | /* |
| 1322 | * 5. Apply iterative camera S_FMT for camera user window (also updates |
| 1323 | * client crop cache and the imaginary sub-rectangle). |
| 1324 | */ |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1325 | ret = client_s_fmt(icd, &mf_tmp, ceu_can_scale); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1326 | if (ret < 0) |
| 1327 | return ret; |
| 1328 | |
| 1329 | dev_geo(dev, "5: camera scaled to %ux%u\n", |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1330 | mf_tmp.width, mf_tmp.height); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1331 | |
| 1332 | /* 6. Retrieve camera output window (g_fmt) */ |
| 1333 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1334 | /* unneeded - it is already in "mf_tmp" */ |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1335 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1336 | /* 7. Calculate new client scales. */ |
| 1337 | scale_h = calc_generic_scale(cam->rect.width, mf_tmp.width); |
| 1338 | scale_v = calc_generic_scale(cam->rect.height, mf_tmp.height); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1339 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1340 | mf->width = mf_tmp.width; |
| 1341 | mf->height = mf_tmp.height; |
| 1342 | mf->colorspace = mf_tmp.colorspace; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1343 | |
| 1344 | /* |
| 1345 | * 8. Calculate new CEU crop - apply camera scales to previously |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1346 | * updated "effective" crop. |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1347 | */ |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1348 | *width = scale_down(cam->subrect.width, scale_h); |
| 1349 | *height = scale_down(cam->subrect.height, scale_v); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1350 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1351 | 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] | 1352 | |
| 1353 | return 0; |
| 1354 | } |
| 1355 | |
| 1356 | /* |
| 1357 | * CEU can scale and crop, but we don't want to waste bandwidth and kill the |
| 1358 | * framerate by always requesting the maximum image from the client. See |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 1359 | * Documentation/video4linux/sh_mobile_ceu_camera.txt for a description of |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1360 | * scaling and cropping algorithms and for the meaning of referenced here steps. |
| 1361 | */ |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 1362 | static int sh_mobile_ceu_set_crop(struct soc_camera_device *icd, |
Guennadi Liakhovetski | 08590b9 | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1363 | struct v4l2_crop *a) |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 1364 | { |
Guennadi Liakhovetski | 08590b9 | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1365 | struct v4l2_rect *rect = &a->c; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1366 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 1367 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Guennadi Liakhovetski | 08590b9 | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1368 | struct v4l2_crop cam_crop; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1369 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1370 | struct v4l2_rect *cam_rect = &cam_crop.c; |
Guennadi Liakhovetski | c9c1f1c | 2009-08-25 11:46:59 -0300 | [diff] [blame] | 1371 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1372 | struct device *dev = icd->dev.parent; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1373 | struct v4l2_mbus_framefmt mf; |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1374 | 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] | 1375 | out_width, out_height; |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1376 | int interm_width, interm_height; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1377 | u32 capsr, cflcr; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1378 | int ret; |
| 1379 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1380 | dev_geo(dev, "S_CROP(%ux%u@%u:%u)\n", rect->width, rect->height, |
| 1381 | rect->left, rect->top); |
| 1382 | |
| 1383 | /* During camera cropping its output window can change too, stop CEU */ |
| 1384 | capsr = capture_save_reset(pcdev); |
| 1385 | dev_dbg(dev, "CAPSR 0x%x, CFLCR 0x%x\n", capsr, pcdev->cflcr); |
| 1386 | |
| 1387 | /* 1. - 2. Apply iterative camera S_CROP for new input window. */ |
| 1388 | ret = client_s_crop(icd, a, &cam_crop); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1389 | if (ret < 0) |
| 1390 | return ret; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1391 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1392 | 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] | 1393 | cam_rect->width, cam_rect->height, |
| 1394 | cam_rect->left, cam_rect->top); |
| 1395 | |
| 1396 | /* On success cam_crop contains current camera crop */ |
| 1397 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1398 | /* 3. Retrieve camera output window */ |
| 1399 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); |
| 1400 | if (ret < 0) |
| 1401 | return ret; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1402 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1403 | if (mf.width > 2560 || mf.height > 1920) |
| 1404 | return -EINVAL; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1405 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1406 | /* 4. Calculate camera scales */ |
| 1407 | scale_cam_h = calc_generic_scale(cam_rect->width, mf.width); |
| 1408 | scale_cam_v = calc_generic_scale(cam_rect->height, mf.height); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1409 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1410 | /* Calculate intermediate window */ |
| 1411 | interm_width = scale_down(rect->width, scale_cam_h); |
| 1412 | interm_height = scale_down(rect->height, scale_cam_v); |
| 1413 | |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 1414 | if (interm_width < icd->user_width) { |
| 1415 | u32 new_scale_h; |
| 1416 | |
| 1417 | new_scale_h = calc_generic_scale(rect->width, icd->user_width); |
| 1418 | |
| 1419 | mf.width = scale_down(cam_rect->width, new_scale_h); |
| 1420 | } |
| 1421 | |
| 1422 | if (interm_height < icd->user_height) { |
| 1423 | u32 new_scale_v; |
| 1424 | |
| 1425 | new_scale_v = calc_generic_scale(rect->height, icd->user_height); |
| 1426 | |
| 1427 | mf.height = scale_down(cam_rect->height, new_scale_v); |
| 1428 | } |
| 1429 | |
| 1430 | if (interm_width < icd->user_width || interm_height < icd->user_height) { |
| 1431 | ret = v4l2_device_call_until_err(sd->v4l2_dev, (int)icd, video, |
| 1432 | s_mbus_fmt, &mf); |
| 1433 | if (ret < 0) |
| 1434 | return ret; |
| 1435 | |
| 1436 | dev_geo(dev, "New camera output %ux%u\n", mf.width, mf.height); |
| 1437 | scale_cam_h = calc_generic_scale(cam_rect->width, mf.width); |
| 1438 | scale_cam_v = calc_generic_scale(cam_rect->height, mf.height); |
| 1439 | interm_width = scale_down(rect->width, scale_cam_h); |
| 1440 | interm_height = scale_down(rect->height, scale_cam_v); |
| 1441 | } |
| 1442 | |
| 1443 | /* Cache camera output window */ |
| 1444 | cam->width = mf.width; |
| 1445 | cam->height = mf.height; |
| 1446 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1447 | if (pcdev->image_mode) { |
| 1448 | out_width = min(interm_width, icd->user_width); |
| 1449 | out_height = min(interm_height, icd->user_height); |
| 1450 | } else { |
| 1451 | out_width = interm_width; |
| 1452 | out_height = interm_height; |
| 1453 | } |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1454 | |
| 1455 | /* |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1456 | * 5. Calculate CEU scales from camera scales from results of (5) and |
| 1457 | * the user window |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1458 | */ |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1459 | scale_ceu_h = calc_scale(interm_width, &out_width); |
| 1460 | scale_ceu_v = calc_scale(interm_height, &out_height); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1461 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1462 | 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] | 1463 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1464 | /* Apply CEU scales. */ |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1465 | cflcr = scale_ceu_h | (scale_ceu_v << 16); |
| 1466 | if (cflcr != pcdev->cflcr) { |
| 1467 | pcdev->cflcr = cflcr; |
| 1468 | ceu_write(pcdev, CFLCR, cflcr); |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1469 | } |
| 1470 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1471 | icd->user_width = out_width; |
| 1472 | icd->user_height = out_height; |
Guennadi Liakhovetski | 787d0f9 | 2011-02-16 18:42:24 -0300 | [diff] [blame] | 1473 | cam->ceu_left = scale_down(rect->left - cam_rect->left, scale_cam_h) & ~1; |
| 1474 | 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] | 1475 | |
| 1476 | /* 6. Use CEU cropping to crop to the new window. */ |
| 1477 | sh_mobile_ceu_set_rect(icd); |
| 1478 | |
| 1479 | cam->subrect = *rect; |
| 1480 | |
| 1481 | dev_geo(dev, "6: CEU cropped to %ux%u@%u:%u\n", |
| 1482 | icd->user_width, icd->user_height, |
| 1483 | cam->ceu_left, cam->ceu_top); |
| 1484 | |
Guennadi Liakhovetski | 787d0f9 | 2011-02-16 18:42:24 -0300 | [diff] [blame] | 1485 | /* Restore capture. The CE bit can be cleared by the hardware */ |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1486 | if (pcdev->active) |
| 1487 | capsr |= 1; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1488 | capture_restore(pcdev, capsr); |
| 1489 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1490 | /* Even if only camera cropping succeeded */ |
| 1491 | return ret; |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 1492 | } |
| 1493 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1494 | static int sh_mobile_ceu_get_crop(struct soc_camera_device *icd, |
| 1495 | struct v4l2_crop *a) |
| 1496 | { |
| 1497 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
| 1498 | |
| 1499 | a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 1500 | a->c = cam->subrect; |
| 1501 | |
| 1502 | return 0; |
| 1503 | } |
| 1504 | |
| 1505 | /* |
| 1506 | * Calculate real client output window by applying new scales to the current |
| 1507 | * client crop. New scales are calculated from the requested output format and |
| 1508 | * CEU crop, mapped backed onto the client input (subrect). |
| 1509 | */ |
| 1510 | static void calculate_client_output(struct soc_camera_device *icd, |
| 1511 | struct v4l2_pix_format *pix, struct v4l2_mbus_framefmt *mf) |
| 1512 | { |
| 1513 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
| 1514 | struct device *dev = icd->dev.parent; |
| 1515 | struct v4l2_rect *cam_subrect = &cam->subrect; |
| 1516 | unsigned int scale_v, scale_h; |
| 1517 | |
| 1518 | if (cam_subrect->width == cam->rect.width && |
| 1519 | cam_subrect->height == cam->rect.height) { |
| 1520 | /* No sub-cropping */ |
| 1521 | mf->width = pix->width; |
| 1522 | mf->height = pix->height; |
| 1523 | return; |
| 1524 | } |
| 1525 | |
| 1526 | /* 1.-2. Current camera scales and subwin - cached. */ |
| 1527 | |
| 1528 | dev_geo(dev, "2: subwin %ux%u@%u:%u\n", |
| 1529 | cam_subrect->width, cam_subrect->height, |
| 1530 | cam_subrect->left, cam_subrect->top); |
| 1531 | |
| 1532 | /* |
| 1533 | * 3. Calculate new combined scales from input sub-window to requested |
| 1534 | * user window. |
| 1535 | */ |
| 1536 | |
| 1537 | /* |
| 1538 | * TODO: CEU cannot scale images larger than VGA to smaller than SubQCIF |
| 1539 | * (128x96) or larger than VGA |
| 1540 | */ |
| 1541 | scale_h = calc_generic_scale(cam_subrect->width, pix->width); |
| 1542 | scale_v = calc_generic_scale(cam_subrect->height, pix->height); |
| 1543 | |
| 1544 | dev_geo(dev, "3: scales %u:%u\n", scale_h, scale_v); |
| 1545 | |
| 1546 | /* |
| 1547 | * 4. Calculate client output window by applying combined scales to real |
| 1548 | * input window. |
| 1549 | */ |
| 1550 | mf->width = scale_down(cam->rect.width, scale_h); |
| 1551 | mf->height = scale_down(cam->rect.height, scale_v); |
| 1552 | } |
| 1553 | |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1554 | /* Similar to set_crop multistage iterative algorithm */ |
Guennadi Liakhovetski | d8fac21 | 2008-12-01 09:45:21 -0300 | [diff] [blame] | 1555 | static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd, |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 1556 | struct v4l2_format *f) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1557 | { |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1558 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1559 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1560 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
| 1561 | struct v4l2_pix_format *pix = &f->fmt.pix; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1562 | struct v4l2_mbus_framefmt mf; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1563 | struct device *dev = icd->dev.parent; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1564 | __u32 pixfmt = pix->pixelformat; |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1565 | const struct soc_camera_format_xlate *xlate; |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 1566 | /* Keep Compiler Happy */ |
| 1567 | unsigned int ceu_sub_width = 0, ceu_sub_height = 0; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1568 | u16 scale_v, scale_h; |
| 1569 | int ret; |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 1570 | bool image_mode; |
| 1571 | enum v4l2_field field; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1572 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1573 | dev_geo(dev, "S_FMT(pix=0x%x, %ux%u)\n", pixfmt, pix->width, pix->height); |
| 1574 | |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1575 | switch (pix->field) { |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1576 | default: |
| 1577 | pix->field = V4L2_FIELD_NONE; |
| 1578 | /* fall-through */ |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 1579 | case V4L2_FIELD_INTERLACED_TB: |
| 1580 | case V4L2_FIELD_INTERLACED_BT: |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1581 | case V4L2_FIELD_NONE: |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 1582 | field = pix->field; |
| 1583 | break; |
| 1584 | case V4L2_FIELD_INTERLACED: |
| 1585 | field = V4L2_FIELD_INTERLACED_TB; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1586 | break; |
| 1587 | } |
Guennadi Liakhovetski | 25c4d74 | 2008-12-01 09:44:59 -0300 | [diff] [blame] | 1588 | |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1589 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
| 1590 | if (!xlate) { |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1591 | dev_warn(dev, "Format %x not found\n", pixfmt); |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1592 | return -EINVAL; |
Guennadi Liakhovetski | 25c4d74 | 2008-12-01 09:44:59 -0300 | [diff] [blame] | 1593 | } |
| 1594 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1595 | /* 1.-4. Calculate client output geometry */ |
| 1596 | calculate_client_output(icd, &f->fmt.pix, &mf); |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1597 | mf.field = pix->field; |
| 1598 | mf.colorspace = pix->colorspace; |
| 1599 | mf.code = xlate->code; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1600 | |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1601 | switch (pixfmt) { |
| 1602 | case V4L2_PIX_FMT_NV12: |
| 1603 | case V4L2_PIX_FMT_NV21: |
| 1604 | case V4L2_PIX_FMT_NV16: |
| 1605 | case V4L2_PIX_FMT_NV61: |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1606 | image_mode = true; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1607 | break; |
| 1608 | default: |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1609 | image_mode = false; |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1610 | } |
Guennadi Liakhovetski | 25c4d74 | 2008-12-01 09:44:59 -0300 | [diff] [blame] | 1611 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1612 | 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] | 1613 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1614 | /* 5. - 9. */ |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1615 | ret = client_scale(icd, &mf, &ceu_sub_width, &ceu_sub_height, |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 1616 | image_mode && V4L2_FIELD_NONE == field); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1617 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1618 | dev_geo(dev, "5-9: client scale return %d\n", ret); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1619 | |
| 1620 | /* Done with the camera. Now see if we can improve the result */ |
| 1621 | |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 1622 | dev_geo(dev, "fmt %ux%u, requested %ux%u\n", |
| 1623 | mf.width, mf.height, pix->width, pix->height); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1624 | if (ret < 0) |
| 1625 | return ret; |
| 1626 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1627 | if (mf.code != xlate->code) |
| 1628 | return -EINVAL; |
| 1629 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1630 | /* 9. Prepare CEU crop */ |
| 1631 | cam->width = mf.width; |
| 1632 | cam->height = mf.height; |
| 1633 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1634 | /* 10. Use CEU scaling to scale to the requested user window. */ |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1635 | |
| 1636 | /* We cannot scale up */ |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1637 | if (pix->width > ceu_sub_width) |
| 1638 | ceu_sub_width = pix->width; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1639 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1640 | if (pix->height > ceu_sub_height) |
| 1641 | ceu_sub_height = pix->height; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1642 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1643 | pix->colorspace = mf.colorspace; |
| 1644 | |
| 1645 | if (image_mode) { |
| 1646 | /* Scale pix->{width x height} down to width x height */ |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1647 | scale_h = calc_scale(ceu_sub_width, &pix->width); |
| 1648 | scale_v = calc_scale(ceu_sub_height, &pix->height); |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1649 | } else { |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1650 | pix->width = ceu_sub_width; |
| 1651 | pix->height = ceu_sub_height; |
| 1652 | scale_h = 0; |
| 1653 | scale_v = 0; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1654 | } |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1655 | |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1656 | pcdev->cflcr = scale_h | (scale_v << 16); |
| 1657 | |
| 1658 | /* |
| 1659 | * We have calculated CFLCR, the actual configuration will be performed |
| 1660 | * in sh_mobile_ceu_set_bus_param() |
| 1661 | */ |
| 1662 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1663 | 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] | 1664 | ceu_sub_width, scale_h, pix->width, |
| 1665 | ceu_sub_height, scale_v, pix->height); |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1666 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1667 | cam->code = xlate->code; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1668 | icd->current_fmt = xlate; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1669 | |
Kuninori Morimoto | 1edcc10 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 1670 | pcdev->field = field; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1671 | pcdev->image_mode = image_mode; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1672 | |
| 1673 | return 0; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1674 | } |
| 1675 | |
Guennadi Liakhovetski | d8fac21 | 2008-12-01 09:45:21 -0300 | [diff] [blame] | 1676 | static int sh_mobile_ceu_try_fmt(struct soc_camera_device *icd, |
| 1677 | struct v4l2_format *f) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1678 | { |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1679 | const struct soc_camera_format_xlate *xlate; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1680 | struct v4l2_pix_format *pix = &f->fmt.pix; |
Guennadi Liakhovetski | c9c1f1c | 2009-08-25 11:46:59 -0300 | [diff] [blame] | 1681 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1682 | struct v4l2_mbus_framefmt mf; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1683 | __u32 pixfmt = pix->pixelformat; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1684 | int width, height; |
Kuninori Morimoto | ccab8a2 | 2008-12-18 12:51:21 -0300 | [diff] [blame] | 1685 | int ret; |
Guennadi Liakhovetski | a2c8c68 | 2008-12-01 09:44:53 -0300 | [diff] [blame] | 1686 | |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 1687 | dev_geo(icd->dev.parent, "TRY_FMT(pix=0x%x, %ux%u)\n", |
| 1688 | pixfmt, pix->width, pix->height); |
| 1689 | |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1690 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
| 1691 | if (!xlate) { |
Guennadi Liakhovetski | 0166b74 | 2009-08-25 11:47:00 -0300 | [diff] [blame] | 1692 | dev_warn(icd->dev.parent, "Format %x not found\n", pixfmt); |
Guennadi Liakhovetski | 25c4d74 | 2008-12-01 09:44:59 -0300 | [diff] [blame] | 1693 | return -EINVAL; |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1694 | } |
Guennadi Liakhovetski | 25c4d74 | 2008-12-01 09:44:59 -0300 | [diff] [blame] | 1695 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1696 | /* FIXME: calculate using depth and bus width */ |
| 1697 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1698 | v4l_bound_align_image(&pix->width, 2, 2560, 1, |
| 1699 | &pix->height, 4, 1920, 2, 0); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1700 | |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1701 | width = pix->width; |
| 1702 | height = pix->height; |
| 1703 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1704 | pix->bytesperline = soc_mbus_bytes_per_line(width, xlate->host_fmt); |
Dan Carpenter | 981cbef | 2010-04-07 06:41:14 -0300 | [diff] [blame] | 1705 | if ((int)pix->bytesperline < 0) |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1706 | return pix->bytesperline; |
| 1707 | pix->sizeimage = height * pix->bytesperline; |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1708 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1709 | /* limit to sensor capabilities */ |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1710 | mf.width = pix->width; |
| 1711 | mf.height = pix->height; |
| 1712 | mf.field = pix->field; |
| 1713 | mf.code = xlate->code; |
| 1714 | mf.colorspace = pix->colorspace; |
| 1715 | |
Guennadi Liakhovetski | 24105eb | 2011-03-23 05:41:28 -0300 | [diff] [blame] | 1716 | 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] | 1717 | if (ret < 0) |
| 1718 | return ret; |
| 1719 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1720 | pix->width = mf.width; |
| 1721 | pix->height = mf.height; |
| 1722 | pix->field = mf.field; |
| 1723 | pix->colorspace = mf.colorspace; |
| 1724 | |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1725 | switch (pixfmt) { |
| 1726 | case V4L2_PIX_FMT_NV12: |
| 1727 | case V4L2_PIX_FMT_NV21: |
| 1728 | case V4L2_PIX_FMT_NV16: |
| 1729 | case V4L2_PIX_FMT_NV61: |
| 1730 | /* FIXME: check against rect_max after converting soc-camera */ |
| 1731 | /* We can scale precisely, need a bigger image from camera */ |
| 1732 | if (pix->width < width || pix->height < height) { |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1733 | /* |
| 1734 | * We presume, the sensor behaves sanely, i.e., if |
| 1735 | * requested a bigger rectangle, it will not return a |
| 1736 | * smaller one. |
| 1737 | */ |
| 1738 | mf.width = 2560; |
| 1739 | mf.height = 1920; |
Guennadi Liakhovetski | 24105eb | 2011-03-23 05:41:28 -0300 | [diff] [blame] | 1740 | ret = v4l2_device_call_until_err(sd->v4l2_dev, (long)icd, video, |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 1741 | try_mbus_fmt, &mf); |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1742 | if (ret < 0) { |
| 1743 | /* Shouldn't actually happen... */ |
Guennadi Liakhovetski | 0166b74 | 2009-08-25 11:47:00 -0300 | [diff] [blame] | 1744 | dev_err(icd->dev.parent, |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1745 | "FIXME: client try_fmt() = %d\n", ret); |
| 1746 | return ret; |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1747 | } |
| 1748 | } |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1749 | /* We will scale exactly */ |
| 1750 | if (mf.width > width) |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1751 | pix->width = width; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1752 | if (mf.height > height) |
Guennadi Liakhovetski | 961801b | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1753 | pix->height = height; |
Kuninori Morimoto | ccab8a2 | 2008-12-18 12:51:21 -0300 | [diff] [blame] | 1754 | } |
| 1755 | |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 1756 | dev_geo(icd->dev.parent, "%s(): return %d, fmt 0x%x, %ux%u\n", |
| 1757 | __func__, ret, pix->pixelformat, pix->width, pix->height); |
| 1758 | |
Kuninori Morimoto | ccab8a2 | 2008-12-18 12:51:21 -0300 | [diff] [blame] | 1759 | return ret; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1760 | } |
| 1761 | |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 1762 | static int sh_mobile_ceu_set_livecrop(struct soc_camera_device *icd, |
| 1763 | struct v4l2_crop *a) |
| 1764 | { |
| 1765 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| 1766 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 1767 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
| 1768 | u32 out_width = icd->user_width, out_height = icd->user_height; |
| 1769 | int ret; |
| 1770 | |
| 1771 | /* Freeze queue */ |
| 1772 | pcdev->frozen = 1; |
| 1773 | /* Wait for frame */ |
| 1774 | ret = wait_for_completion_interruptible(&pcdev->complete); |
| 1775 | /* Stop the client */ |
| 1776 | ret = v4l2_subdev_call(sd, video, s_stream, 0); |
| 1777 | if (ret < 0) |
| 1778 | dev_warn(icd->dev.parent, |
| 1779 | "Client failed to stop the stream: %d\n", ret); |
| 1780 | else |
| 1781 | /* Do the crop, if it fails, there's nothing more we can do */ |
| 1782 | sh_mobile_ceu_set_crop(icd, a); |
| 1783 | |
| 1784 | dev_geo(icd->dev.parent, "Output after crop: %ux%u\n", icd->user_width, icd->user_height); |
| 1785 | |
| 1786 | if (icd->user_width != out_width || icd->user_height != out_height) { |
| 1787 | struct v4l2_format f = { |
| 1788 | .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, |
| 1789 | .fmt.pix = { |
| 1790 | .width = out_width, |
| 1791 | .height = out_height, |
| 1792 | .pixelformat = icd->current_fmt->host_fmt->fourcc, |
| 1793 | .field = pcdev->field, |
| 1794 | .colorspace = icd->colorspace, |
| 1795 | }, |
| 1796 | }; |
| 1797 | ret = sh_mobile_ceu_set_fmt(icd, &f); |
| 1798 | if (!ret && (out_width != f.fmt.pix.width || |
| 1799 | out_height != f.fmt.pix.height)) |
| 1800 | ret = -EINVAL; |
| 1801 | if (!ret) { |
| 1802 | icd->user_width = out_width; |
| 1803 | icd->user_height = out_height; |
| 1804 | ret = sh_mobile_ceu_set_bus_param(icd, |
| 1805 | icd->current_fmt->host_fmt->fourcc); |
| 1806 | } |
| 1807 | } |
| 1808 | |
| 1809 | /* Thaw the queue */ |
| 1810 | pcdev->frozen = 0; |
| 1811 | spin_lock_irq(&pcdev->lock); |
| 1812 | sh_mobile_ceu_capture(pcdev); |
| 1813 | spin_unlock_irq(&pcdev->lock); |
| 1814 | /* Start the client */ |
| 1815 | ret = v4l2_subdev_call(sd, video, s_stream, 1); |
| 1816 | return ret; |
| 1817 | } |
| 1818 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1819 | static unsigned int sh_mobile_ceu_poll(struct file *file, poll_table *pt) |
| 1820 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 1821 | struct soc_camera_device *icd = file->private_data; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1822 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 1823 | return vb2_poll(&icd->vb2_vidq, file, pt); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1824 | } |
| 1825 | |
| 1826 | static int sh_mobile_ceu_querycap(struct soc_camera_host *ici, |
| 1827 | struct v4l2_capability *cap) |
| 1828 | { |
| 1829 | strlcpy(cap->card, "SuperH_Mobile_CEU", sizeof(cap->card)); |
| 1830 | cap->version = KERNEL_VERSION(0, 0, 5); |
| 1831 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; |
| 1832 | return 0; |
| 1833 | } |
| 1834 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 1835 | static int sh_mobile_ceu_init_videobuf(struct vb2_queue *q, |
| 1836 | struct soc_camera_device *icd) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1837 | { |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 1838 | q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 1839 | q->io_modes = VB2_MMAP | VB2_USERPTR; |
| 1840 | q->drv_priv = icd; |
| 1841 | q->ops = &sh_mobile_ceu_videobuf_ops; |
| 1842 | q->mem_ops = &vb2_dma_contig_memops; |
| 1843 | q->buf_struct_size = sizeof(struct sh_mobile_ceu_buffer); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1844 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 1845 | return vb2_queue_init(q); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1846 | } |
| 1847 | |
Guennadi Liakhovetski | 4a6110b | 2009-08-25 11:44:15 -0300 | [diff] [blame] | 1848 | static int sh_mobile_ceu_get_ctrl(struct soc_camera_device *icd, |
| 1849 | struct v4l2_control *ctrl) |
| 1850 | { |
| 1851 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 1852 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
| 1853 | u32 val; |
| 1854 | |
| 1855 | switch (ctrl->id) { |
| 1856 | case V4L2_CID_SHARPNESS: |
| 1857 | val = ceu_read(pcdev, CLFCR); |
| 1858 | ctrl->value = val ^ 1; |
| 1859 | return 0; |
| 1860 | } |
| 1861 | return -ENOIOCTLCMD; |
| 1862 | } |
| 1863 | |
| 1864 | static int sh_mobile_ceu_set_ctrl(struct soc_camera_device *icd, |
| 1865 | struct v4l2_control *ctrl) |
| 1866 | { |
| 1867 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 1868 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
| 1869 | |
| 1870 | switch (ctrl->id) { |
| 1871 | case V4L2_CID_SHARPNESS: |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1872 | switch (icd->current_fmt->host_fmt->fourcc) { |
Guennadi Liakhovetski | 4a6110b | 2009-08-25 11:44:15 -0300 | [diff] [blame] | 1873 | case V4L2_PIX_FMT_NV12: |
| 1874 | case V4L2_PIX_FMT_NV21: |
| 1875 | case V4L2_PIX_FMT_NV16: |
| 1876 | case V4L2_PIX_FMT_NV61: |
| 1877 | ceu_write(pcdev, CLFCR, !ctrl->value); |
| 1878 | return 0; |
| 1879 | } |
| 1880 | return -EINVAL; |
| 1881 | } |
| 1882 | return -ENOIOCTLCMD; |
| 1883 | } |
| 1884 | |
| 1885 | static const struct v4l2_queryctrl sh_mobile_ceu_controls[] = { |
| 1886 | { |
| 1887 | .id = V4L2_CID_SHARPNESS, |
| 1888 | .type = V4L2_CTRL_TYPE_BOOLEAN, |
| 1889 | .name = "Low-pass filter", |
| 1890 | .minimum = 0, |
| 1891 | .maximum = 1, |
| 1892 | .step = 1, |
| 1893 | .default_value = 0, |
| 1894 | }, |
| 1895 | }; |
| 1896 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1897 | static struct soc_camera_host_ops sh_mobile_ceu_host_ops = { |
| 1898 | .owner = THIS_MODULE, |
| 1899 | .add = sh_mobile_ceu_add_device, |
| 1900 | .remove = sh_mobile_ceu_remove_device, |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1901 | .get_formats = sh_mobile_ceu_get_formats, |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 1902 | .put_formats = sh_mobile_ceu_put_formats, |
Guennadi Liakhovetski | e622681 | 2010-03-23 11:23:31 -0300 | [diff] [blame] | 1903 | .get_crop = sh_mobile_ceu_get_crop, |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 1904 | .set_crop = sh_mobile_ceu_set_crop, |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 1905 | .set_livecrop = sh_mobile_ceu_set_livecrop, |
Guennadi Liakhovetski | d8fac21 | 2008-12-01 09:45:21 -0300 | [diff] [blame] | 1906 | .set_fmt = sh_mobile_ceu_set_fmt, |
| 1907 | .try_fmt = sh_mobile_ceu_try_fmt, |
Guennadi Liakhovetski | 4a6110b | 2009-08-25 11:44:15 -0300 | [diff] [blame] | 1908 | .set_ctrl = sh_mobile_ceu_set_ctrl, |
| 1909 | .get_ctrl = sh_mobile_ceu_get_ctrl, |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1910 | .poll = sh_mobile_ceu_poll, |
| 1911 | .querycap = sh_mobile_ceu_querycap, |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1912 | .set_bus_param = sh_mobile_ceu_set_bus_param, |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 1913 | .init_videobuf2 = sh_mobile_ceu_init_videobuf, |
Guennadi Liakhovetski | 4a6110b | 2009-08-25 11:44:15 -0300 | [diff] [blame] | 1914 | .controls = sh_mobile_ceu_controls, |
| 1915 | .num_controls = ARRAY_SIZE(sh_mobile_ceu_controls), |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1916 | }; |
| 1917 | |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 1918 | struct bus_wait { |
| 1919 | struct notifier_block notifier; |
| 1920 | struct completion completion; |
| 1921 | struct device *dev; |
| 1922 | }; |
| 1923 | |
| 1924 | static int bus_notify(struct notifier_block *nb, |
| 1925 | unsigned long action, void *data) |
| 1926 | { |
| 1927 | struct device *dev = data; |
| 1928 | struct bus_wait *wait = container_of(nb, struct bus_wait, notifier); |
| 1929 | |
| 1930 | if (wait->dev != dev) |
| 1931 | return NOTIFY_DONE; |
| 1932 | |
| 1933 | switch (action) { |
| 1934 | case BUS_NOTIFY_UNBOUND_DRIVER: |
| 1935 | /* Protect from module unloading */ |
| 1936 | wait_for_completion(&wait->completion); |
| 1937 | return NOTIFY_OK; |
| 1938 | } |
| 1939 | return NOTIFY_DONE; |
| 1940 | } |
| 1941 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1942 | static int __devinit sh_mobile_ceu_probe(struct platform_device *pdev) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1943 | { |
| 1944 | struct sh_mobile_ceu_dev *pcdev; |
| 1945 | struct resource *res; |
| 1946 | void __iomem *base; |
| 1947 | unsigned int irq; |
| 1948 | int err = 0; |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 1949 | struct bus_wait wait = { |
| 1950 | .completion = COMPLETION_INITIALIZER_ONSTACK(wait.completion), |
| 1951 | .notifier.notifier_call = bus_notify, |
| 1952 | }; |
| 1953 | struct device *csi2; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1954 | |
| 1955 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 1956 | irq = platform_get_irq(pdev, 0); |
Uwe Kleine-König | b89fc2e | 2010-01-09 20:45:13 -0300 | [diff] [blame] | 1957 | if (!res || (int)irq <= 0) { |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1958 | dev_err(&pdev->dev, "Not enough CEU platform resources.\n"); |
| 1959 | err = -ENODEV; |
| 1960 | goto exit; |
| 1961 | } |
| 1962 | |
| 1963 | pcdev = kzalloc(sizeof(*pcdev), GFP_KERNEL); |
| 1964 | if (!pcdev) { |
| 1965 | dev_err(&pdev->dev, "Could not allocate pcdev\n"); |
| 1966 | err = -ENOMEM; |
| 1967 | goto exit; |
| 1968 | } |
| 1969 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1970 | INIT_LIST_HEAD(&pcdev->capture); |
| 1971 | spin_lock_init(&pcdev->lock); |
Guennadi Liakhovetski | 3dac322 | 2011-03-28 13:39:16 -0300 | [diff] [blame] | 1972 | init_completion(&pcdev->complete); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1973 | |
| 1974 | pcdev->pdata = pdev->dev.platform_data; |
| 1975 | if (!pcdev->pdata) { |
| 1976 | err = -EINVAL; |
| 1977 | dev_err(&pdev->dev, "CEU platform data not set.\n"); |
| 1978 | goto exit_kfree; |
| 1979 | } |
| 1980 | |
Guennadi Liakhovetski | eb6c855 | 2009-04-24 12:55:18 -0300 | [diff] [blame] | 1981 | base = ioremap_nocache(res->start, resource_size(res)); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1982 | if (!base) { |
| 1983 | err = -ENXIO; |
| 1984 | dev_err(&pdev->dev, "Unable to ioremap CEU registers.\n"); |
| 1985 | goto exit_kfree; |
| 1986 | } |
| 1987 | |
| 1988 | pcdev->irq = irq; |
| 1989 | pcdev->base = base; |
| 1990 | pcdev->video_limit = 0; /* only enabled if second resource exists */ |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1991 | |
| 1992 | res = platform_get_resource(pdev, IORESOURCE_MEM, 1); |
| 1993 | if (res) { |
| 1994 | err = dma_declare_coherent_memory(&pdev->dev, res->start, |
| 1995 | res->start, |
Guennadi Liakhovetski | eb6c855 | 2009-04-24 12:55:18 -0300 | [diff] [blame] | 1996 | resource_size(res), |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1997 | DMA_MEMORY_MAP | |
| 1998 | DMA_MEMORY_EXCLUSIVE); |
| 1999 | if (!err) { |
| 2000 | dev_err(&pdev->dev, "Unable to declare CEU memory.\n"); |
| 2001 | err = -ENXIO; |
| 2002 | goto exit_iounmap; |
| 2003 | } |
| 2004 | |
Guennadi Liakhovetski | eb6c855 | 2009-04-24 12:55:18 -0300 | [diff] [blame] | 2005 | pcdev->video_limit = resource_size(res); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2006 | } |
| 2007 | |
| 2008 | /* request irq */ |
| 2009 | err = request_irq(pcdev->irq, sh_mobile_ceu_irq, IRQF_DISABLED, |
Kay Sievers | af128a1 | 2008-10-30 00:51:46 -0300 | [diff] [blame] | 2010 | dev_name(&pdev->dev), pcdev); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2011 | if (err) { |
| 2012 | dev_err(&pdev->dev, "Unable to register CEU interrupt.\n"); |
| 2013 | goto exit_release_mem; |
| 2014 | } |
| 2015 | |
Magnus Damm | 6d1386c | 2009-08-14 10:49:17 +0000 | [diff] [blame] | 2016 | pm_suspend_ignore_children(&pdev->dev, true); |
| 2017 | pm_runtime_enable(&pdev->dev); |
| 2018 | pm_runtime_resume(&pdev->dev); |
Magnus Damm | a42b6dd | 2008-10-31 20:21:44 +0900 | [diff] [blame] | 2019 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2020 | pcdev->ici.priv = pcdev; |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 2021 | pcdev->ici.v4l2_dev.dev = &pdev->dev; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2022 | pcdev->ici.nr = pdev->id; |
Kay Sievers | af128a1 | 2008-10-30 00:51:46 -0300 | [diff] [blame] | 2023 | pcdev->ici.drv_name = dev_name(&pdev->dev); |
| 2024 | pcdev->ici.ops = &sh_mobile_ceu_host_ops; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2025 | |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 2026 | /* CSI2 interfacing */ |
| 2027 | csi2 = pcdev->pdata->csi2_dev; |
| 2028 | if (csi2) { |
| 2029 | wait.dev = csi2; |
| 2030 | |
| 2031 | err = bus_register_notifier(&platform_bus_type, &wait.notifier); |
| 2032 | if (err < 0) |
| 2033 | goto exit_free_clk; |
| 2034 | |
| 2035 | /* |
| 2036 | * From this point the driver module will not unload, until |
| 2037 | * we complete the completion. |
| 2038 | */ |
| 2039 | |
Guennadi Liakhovetski | cd05e79 | 2010-10-20 10:14:57 -0300 | [diff] [blame] | 2040 | if (!csi2->driver) { |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 2041 | complete(&wait.completion); |
| 2042 | /* Either too late, or probing failed */ |
| 2043 | bus_unregister_notifier(&platform_bus_type, &wait.notifier); |
| 2044 | err = -ENXIO; |
| 2045 | goto exit_free_clk; |
| 2046 | } |
| 2047 | |
| 2048 | /* |
| 2049 | * The module is still loaded, in the worst case it is hanging |
| 2050 | * in device release on our completion. So, _now_ dereferencing |
| 2051 | * the "owner" is safe! |
| 2052 | */ |
| 2053 | |
| 2054 | err = try_module_get(csi2->driver->owner); |
| 2055 | |
| 2056 | /* Let notifier complete, if it has been locked */ |
| 2057 | complete(&wait.completion); |
| 2058 | bus_unregister_notifier(&platform_bus_type, &wait.notifier); |
| 2059 | if (!err) { |
| 2060 | err = -ENODEV; |
| 2061 | goto exit_free_clk; |
| 2062 | } |
| 2063 | } |
| 2064 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 2065 | pcdev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev); |
| 2066 | if (IS_ERR(pcdev->alloc_ctx)) { |
| 2067 | err = PTR_ERR(pcdev->alloc_ctx); |
| 2068 | goto exit_module_put; |
| 2069 | } |
| 2070 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2071 | err = soc_camera_host_register(&pcdev->ici); |
| 2072 | if (err) |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 2073 | goto exit_free_ctx; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2074 | |
| 2075 | return 0; |
| 2076 | |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 2077 | exit_free_ctx: |
| 2078 | vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx); |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 2079 | exit_module_put: |
| 2080 | if (csi2 && csi2->driver) |
| 2081 | module_put(csi2->driver->owner); |
Kuninori Morimoto | 055e05a | 2009-11-09 16:13:24 -0300 | [diff] [blame] | 2082 | exit_free_clk: |
| 2083 | pm_runtime_disable(&pdev->dev); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2084 | free_irq(pcdev->irq, pcdev); |
| 2085 | exit_release_mem: |
| 2086 | if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) |
| 2087 | dma_release_declared_memory(&pdev->dev); |
| 2088 | exit_iounmap: |
| 2089 | iounmap(base); |
| 2090 | exit_kfree: |
| 2091 | kfree(pcdev); |
| 2092 | exit: |
| 2093 | return err; |
| 2094 | } |
| 2095 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 2096 | static int __devexit sh_mobile_ceu_remove(struct platform_device *pdev) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2097 | { |
Guennadi Liakhovetski | eff505f | 2009-04-24 12:55:48 -0300 | [diff] [blame] | 2098 | struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev); |
| 2099 | struct sh_mobile_ceu_dev *pcdev = container_of(soc_host, |
| 2100 | struct sh_mobile_ceu_dev, ici); |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 2101 | struct device *csi2 = pcdev->pdata->csi2_dev; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2102 | |
Guennadi Liakhovetski | eff505f | 2009-04-24 12:55:48 -0300 | [diff] [blame] | 2103 | soc_camera_host_unregister(soc_host); |
Kuninori Morimoto | 055e05a | 2009-11-09 16:13:24 -0300 | [diff] [blame] | 2104 | pm_runtime_disable(&pdev->dev); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2105 | free_irq(pcdev->irq, pcdev); |
| 2106 | if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) |
| 2107 | dma_release_declared_memory(&pdev->dev); |
| 2108 | iounmap(pcdev->base); |
Guennadi Liakhovetski | a616898 | 2011-02-18 05:30:15 -0300 | [diff] [blame] | 2109 | vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx); |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 2110 | if (csi2 && csi2->driver) |
| 2111 | module_put(csi2->driver->owner); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2112 | kfree(pcdev); |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 2113 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2114 | return 0; |
| 2115 | } |
| 2116 | |
Magnus Damm | 6d1386c | 2009-08-14 10:49:17 +0000 | [diff] [blame] | 2117 | static int sh_mobile_ceu_runtime_nop(struct device *dev) |
| 2118 | { |
| 2119 | /* Runtime PM callback shared between ->runtime_suspend() |
| 2120 | * and ->runtime_resume(). Simply returns success. |
| 2121 | * |
| 2122 | * This driver re-initializes all registers after |
| 2123 | * pm_runtime_get_sync() anyway so there is no need |
| 2124 | * to save and restore registers here. |
| 2125 | */ |
| 2126 | return 0; |
| 2127 | } |
| 2128 | |
Alexey Dobriyan | 4714521 | 2009-12-14 18:00:08 -0800 | [diff] [blame] | 2129 | static const struct dev_pm_ops sh_mobile_ceu_dev_pm_ops = { |
Magnus Damm | 6d1386c | 2009-08-14 10:49:17 +0000 | [diff] [blame] | 2130 | .runtime_suspend = sh_mobile_ceu_runtime_nop, |
| 2131 | .runtime_resume = sh_mobile_ceu_runtime_nop, |
| 2132 | }; |
| 2133 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2134 | static struct platform_driver sh_mobile_ceu_driver = { |
| 2135 | .driver = { |
| 2136 | .name = "sh_mobile_ceu", |
Magnus Damm | 6d1386c | 2009-08-14 10:49:17 +0000 | [diff] [blame] | 2137 | .pm = &sh_mobile_ceu_dev_pm_ops, |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2138 | }, |
| 2139 | .probe = sh_mobile_ceu_probe, |
Uwe Kleine-König | 50e55fd | 2009-12-10 17:00:13 -0300 | [diff] [blame] | 2140 | .remove = __devexit_p(sh_mobile_ceu_remove), |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2141 | }; |
| 2142 | |
| 2143 | static int __init sh_mobile_ceu_init(void) |
| 2144 | { |
Guennadi Liakhovetski | b3b5020 | 2010-07-26 12:13:34 -0300 | [diff] [blame] | 2145 | /* Whatever return code */ |
| 2146 | request_module("sh_mobile_csi2"); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2147 | return platform_driver_register(&sh_mobile_ceu_driver); |
| 2148 | } |
| 2149 | |
| 2150 | static void __exit sh_mobile_ceu_exit(void) |
| 2151 | { |
Paul Mundt | 01c1e4c | 2008-08-01 19:48:51 -0300 | [diff] [blame] | 2152 | platform_driver_unregister(&sh_mobile_ceu_driver); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 2153 | } |
| 2154 | |
| 2155 | module_init(sh_mobile_ceu_init); |
| 2156 | module_exit(sh_mobile_ceu_exit); |
| 2157 | |
| 2158 | MODULE_DESCRIPTION("SuperH Mobile CEU driver"); |
| 2159 | MODULE_AUTHOR("Magnus Damm"); |
| 2160 | MODULE_LICENSE("GPL"); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 2161 | MODULE_ALIAS("platform:sh_mobile_ceu"); |