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> |
| 20 | #include <linux/delay.h> |
| 21 | #include <linux/dma-mapping.h> |
| 22 | #include <linux/errno.h> |
| 23 | #include <linux/fs.h> |
| 24 | #include <linux/interrupt.h> |
| 25 | #include <linux/kernel.h> |
| 26 | #include <linux/mm.h> |
| 27 | #include <linux/moduleparam.h> |
| 28 | #include <linux/time.h> |
| 29 | #include <linux/version.h> |
| 30 | #include <linux/device.h> |
| 31 | #include <linux/platform_device.h> |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 32 | #include <linux/videodev2.h> |
Magnus Damm | 6d1386c | 2009-08-14 10:49:17 +0000 | [diff] [blame] | 33 | #include <linux/pm_runtime.h> |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 34 | |
| 35 | #include <media/v4l2-common.h> |
| 36 | #include <media/v4l2-dev.h> |
| 37 | #include <media/soc_camera.h> |
| 38 | #include <media/sh_mobile_ceu.h> |
| 39 | #include <media/videobuf-dma-contig.h> |
| 40 | |
| 41 | /* register offsets for sh7722 / sh7723 */ |
| 42 | |
Magnus Damm | dd54203 | 2008-10-16 19:50:22 -0300 | [diff] [blame] | 43 | #define CAPSR 0x00 /* Capture start register */ |
| 44 | #define CAPCR 0x04 /* Capture control register */ |
| 45 | #define CAMCR 0x08 /* Capture interface control register */ |
| 46 | #define CMCYR 0x0c /* Capture interface cycle register */ |
| 47 | #define CAMOR 0x10 /* Capture interface offset register */ |
| 48 | #define CAPWR 0x14 /* Capture interface width register */ |
| 49 | #define CAIFR 0x18 /* Capture interface input format register */ |
| 50 | #define CSTCR 0x20 /* Camera strobe control register (<= sh7722) */ |
| 51 | #define CSECR 0x24 /* Camera strobe emission count register (<= sh7722) */ |
| 52 | #define CRCNTR 0x28 /* CEU register control register */ |
| 53 | #define CRCMPR 0x2c /* CEU register forcible control register */ |
| 54 | #define CFLCR 0x30 /* Capture filter control register */ |
| 55 | #define CFSZR 0x34 /* Capture filter size clip register */ |
| 56 | #define CDWDR 0x38 /* Capture destination width register */ |
| 57 | #define CDAYR 0x3c /* Capture data address Y register */ |
| 58 | #define CDACR 0x40 /* Capture data address C register */ |
| 59 | #define CDBYR 0x44 /* Capture data bottom-field address Y register */ |
| 60 | #define CDBCR 0x48 /* Capture data bottom-field address C register */ |
| 61 | #define CBDSR 0x4c /* Capture bundle destination size register */ |
| 62 | #define CFWCR 0x5c /* Firewall operation control register */ |
| 63 | #define CLFCR 0x60 /* Capture low-pass filter control register */ |
| 64 | #define CDOCR 0x64 /* Capture data output control register */ |
| 65 | #define CDDCR 0x68 /* Capture data complexity level register */ |
| 66 | #define CDDAR 0x6c /* Capture data complexity level address register */ |
| 67 | #define CEIER 0x70 /* Capture event interrupt enable register */ |
| 68 | #define CETCR 0x74 /* Capture event flag clear register */ |
| 69 | #define CSTSR 0x7c /* Capture status register */ |
| 70 | #define CSRTR 0x80 /* Capture software reset register */ |
| 71 | #define CDSSR 0x84 /* Capture data size register */ |
| 72 | #define CDAYR2 0x90 /* Capture data address Y register 2 */ |
| 73 | #define CDACR2 0x94 /* Capture data address C register 2 */ |
| 74 | #define CDBYR2 0x98 /* Capture data bottom-field address Y register 2 */ |
| 75 | #define CDBCR2 0x9c /* Capture data bottom-field address C register 2 */ |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 76 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 77 | /* per video frame buffer */ |
| 78 | struct sh_mobile_ceu_buffer { |
| 79 | struct videobuf_buffer vb; /* v4l buffer must be first */ |
| 80 | const struct soc_camera_data_format *fmt; |
| 81 | }; |
| 82 | |
| 83 | struct sh_mobile_ceu_dev { |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 84 | struct soc_camera_host ici; |
| 85 | struct soc_camera_device *icd; |
| 86 | |
| 87 | unsigned int irq; |
| 88 | void __iomem *base; |
| 89 | unsigned long video_limit; |
| 90 | |
Guennadi Liakhovetski | c60f2b5 | 2008-07-17 17:30:47 -0300 | [diff] [blame] | 91 | /* lock used to protect videobuf */ |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 92 | spinlock_t lock; |
| 93 | struct list_head capture; |
| 94 | struct videobuf_buffer *active; |
| 95 | |
| 96 | struct sh_mobile_ceu_info *pdata; |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 97 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame^] | 98 | unsigned int is_interlaced:1; |
| 99 | unsigned int image_mode:1; |
| 100 | unsigned int is_16bit:1; |
| 101 | }; |
| 102 | |
| 103 | struct sh_mobile_ceu_cam { |
| 104 | struct v4l2_rect camera_rect; |
| 105 | const struct soc_camera_data_format *extra_fmt; |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 106 | const struct soc_camera_data_format *camera_fmt; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 107 | }; |
| 108 | |
Kuninori Morimoto | c354b40 | 2009-02-23 12:12:58 -0300 | [diff] [blame] | 109 | static unsigned long make_bus_param(struct sh_mobile_ceu_dev *pcdev) |
| 110 | { |
| 111 | unsigned long flags; |
| 112 | |
| 113 | flags = SOCAM_MASTER | |
| 114 | SOCAM_PCLK_SAMPLE_RISING | |
| 115 | SOCAM_HSYNC_ACTIVE_HIGH | |
| 116 | SOCAM_HSYNC_ACTIVE_LOW | |
| 117 | SOCAM_VSYNC_ACTIVE_HIGH | |
| 118 | SOCAM_VSYNC_ACTIVE_LOW | |
| 119 | SOCAM_DATA_ACTIVE_HIGH; |
| 120 | |
| 121 | if (pcdev->pdata->flags & SH_CEU_FLAG_USE_8BIT_BUS) |
| 122 | flags |= SOCAM_DATAWIDTH_8; |
| 123 | |
| 124 | if (pcdev->pdata->flags & SH_CEU_FLAG_USE_16BIT_BUS) |
| 125 | flags |= SOCAM_DATAWIDTH_16; |
| 126 | |
| 127 | if (flags & SOCAM_DATAWIDTH_MASK) |
| 128 | return flags; |
| 129 | |
| 130 | return 0; |
| 131 | } |
| 132 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 133 | static void ceu_write(struct sh_mobile_ceu_dev *priv, |
Magnus Damm | 7a1a816 | 2008-12-18 12:50:30 -0300 | [diff] [blame] | 134 | unsigned long reg_offs, u32 data) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 135 | { |
| 136 | iowrite32(data, priv->base + reg_offs); |
| 137 | } |
| 138 | |
Magnus Damm | 7a1a816 | 2008-12-18 12:50:30 -0300 | [diff] [blame] | 139 | 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] | 140 | { |
| 141 | return ioread32(priv->base + reg_offs); |
| 142 | } |
| 143 | |
| 144 | /* |
| 145 | * Videobuf operations |
| 146 | */ |
| 147 | static int sh_mobile_ceu_videobuf_setup(struct videobuf_queue *vq, |
| 148 | unsigned int *count, |
| 149 | unsigned int *size) |
| 150 | { |
| 151 | struct soc_camera_device *icd = vq->priv_data; |
| 152 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 153 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
| 154 | int bytes_per_pixel = (icd->current_fmt->depth + 7) >> 3; |
| 155 | |
Guennadi Liakhovetski | a0705b0 | 2009-08-25 11:46:17 -0300 | [diff] [blame] | 156 | *size = PAGE_ALIGN(icd->rect_current.width * icd->rect_current.height * |
| 157 | bytes_per_pixel); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 158 | |
| 159 | if (0 == *count) |
| 160 | *count = 2; |
| 161 | |
| 162 | if (pcdev->video_limit) { |
| 163 | while (*size * *count > pcdev->video_limit) |
| 164 | (*count)--; |
| 165 | } |
| 166 | |
| 167 | dev_dbg(&icd->dev, "count=%d, size=%d\n", *count, *size); |
| 168 | |
| 169 | return 0; |
| 170 | } |
| 171 | |
| 172 | static void free_buffer(struct videobuf_queue *vq, |
| 173 | struct sh_mobile_ceu_buffer *buf) |
| 174 | { |
| 175 | struct soc_camera_device *icd = vq->priv_data; |
| 176 | |
Hans Verkuil | 86751b0 | 2008-07-18 01:35:14 -0300 | [diff] [blame] | 177 | dev_dbg(&icd->dev, "%s (vb=0x%p) 0x%08lx %zd\n", __func__, |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 178 | &buf->vb, buf->vb.baddr, buf->vb.bsize); |
| 179 | |
| 180 | if (in_interrupt()) |
| 181 | BUG(); |
| 182 | |
Magnus Damm | 97215cb | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 183 | videobuf_waiton(&buf->vb, 0, 0); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 184 | videobuf_dma_contig_free(vq, &buf->vb); |
| 185 | dev_dbg(&icd->dev, "%s freed\n", __func__); |
| 186 | buf->vb.state = VIDEOBUF_NEEDS_INIT; |
| 187 | } |
| 188 | |
Magnus Damm | 7a1a816 | 2008-12-18 12:50:30 -0300 | [diff] [blame] | 189 | #define CEU_CETCR_MAGIC 0x0317f313 /* acknowledge magical interrupt sources */ |
| 190 | #define CEU_CETCR_IGRW (1 << 4) /* prohibited register access interrupt bit */ |
| 191 | #define CEU_CEIER_CPEIE (1 << 0) /* one-frame capture end interrupt */ |
| 192 | #define CEU_CAPCR_CTNCP (1 << 16) /* continuous capture mode (if set) */ |
| 193 | |
| 194 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 195 | static void sh_mobile_ceu_capture(struct sh_mobile_ceu_dev *pcdev) |
| 196 | { |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 197 | struct soc_camera_device *icd = pcdev->icd; |
Kuninori Morimoto | ccab8a2 | 2008-12-18 12:51:21 -0300 | [diff] [blame] | 198 | dma_addr_t phys_addr_top, phys_addr_bottom; |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 199 | |
Magnus Damm | 7a1a816 | 2008-12-18 12:50:30 -0300 | [diff] [blame] | 200 | /* The hardware is _very_ picky about this sequence. Especially |
| 201 | * the CEU_CETCR_MAGIC value. It seems like we need to acknowledge |
| 202 | * several not-so-well documented interrupt sources in CETCR. |
| 203 | */ |
| 204 | ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) & ~CEU_CEIER_CPEIE); |
| 205 | ceu_write(pcdev, CETCR, ~ceu_read(pcdev, CETCR) & CEU_CETCR_MAGIC); |
| 206 | ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) | CEU_CEIER_CPEIE); |
| 207 | ceu_write(pcdev, CAPCR, ceu_read(pcdev, CAPCR) & ~CEU_CAPCR_CTNCP); |
| 208 | ceu_write(pcdev, CETCR, CEU_CETCR_MAGIC ^ CEU_CETCR_IGRW); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 209 | |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 210 | if (!pcdev->active) |
| 211 | return; |
| 212 | |
Kuninori Morimoto | ccab8a2 | 2008-12-18 12:51:21 -0300 | [diff] [blame] | 213 | phys_addr_top = videobuf_to_dma_contig(pcdev->active); |
| 214 | ceu_write(pcdev, CDAYR, phys_addr_top); |
Guennadi Liakhovetski | e802967 | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 215 | if (pcdev->is_interlaced) { |
Guennadi Liakhovetski | a0705b0 | 2009-08-25 11:46:17 -0300 | [diff] [blame] | 216 | phys_addr_bottom = phys_addr_top + icd->rect_current.width; |
Kuninori Morimoto | ccab8a2 | 2008-12-18 12:51:21 -0300 | [diff] [blame] | 217 | ceu_write(pcdev, CDBYR, phys_addr_bottom); |
| 218 | } |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 219 | |
| 220 | switch (icd->current_fmt->fourcc) { |
| 221 | case V4L2_PIX_FMT_NV12: |
| 222 | case V4L2_PIX_FMT_NV21: |
Magnus Damm | 9e4a56d | 2008-12-18 12:45:33 -0300 | [diff] [blame] | 223 | case V4L2_PIX_FMT_NV16: |
| 224 | case V4L2_PIX_FMT_NV61: |
Guennadi Liakhovetski | a0705b0 | 2009-08-25 11:46:17 -0300 | [diff] [blame] | 225 | phys_addr_top += icd->rect_current.width * |
| 226 | icd->rect_current.height; |
Kuninori Morimoto | ccab8a2 | 2008-12-18 12:51:21 -0300 | [diff] [blame] | 227 | ceu_write(pcdev, CDACR, phys_addr_top); |
Guennadi Liakhovetski | e802967 | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 228 | if (pcdev->is_interlaced) { |
Guennadi Liakhovetski | a0705b0 | 2009-08-25 11:46:17 -0300 | [diff] [blame] | 229 | phys_addr_bottom = phys_addr_top + |
| 230 | icd->rect_current.width; |
Kuninori Morimoto | ccab8a2 | 2008-12-18 12:51:21 -0300 | [diff] [blame] | 231 | ceu_write(pcdev, CDBCR, phys_addr_bottom); |
| 232 | } |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 233 | } |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 234 | |
| 235 | pcdev->active->state = VIDEOBUF_ACTIVE; |
| 236 | ceu_write(pcdev, CAPSR, 0x1); /* start capture */ |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 237 | } |
| 238 | |
| 239 | static int sh_mobile_ceu_videobuf_prepare(struct videobuf_queue *vq, |
| 240 | struct videobuf_buffer *vb, |
| 241 | enum v4l2_field field) |
| 242 | { |
| 243 | struct soc_camera_device *icd = vq->priv_data; |
| 244 | struct sh_mobile_ceu_buffer *buf; |
| 245 | int ret; |
| 246 | |
| 247 | buf = container_of(vb, struct sh_mobile_ceu_buffer, vb); |
| 248 | |
Hans Verkuil | 86751b0 | 2008-07-18 01:35:14 -0300 | [diff] [blame] | 249 | dev_dbg(&icd->dev, "%s (vb=0x%p) 0x%08lx %zd\n", __func__, |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 250 | vb, vb->baddr, vb->bsize); |
| 251 | |
| 252 | /* Added list head initialization on alloc */ |
| 253 | WARN_ON(!list_empty(&vb->queue)); |
| 254 | |
| 255 | #ifdef DEBUG |
| 256 | /* This can be useful if you want to see if we actually fill |
| 257 | * the buffer with something */ |
| 258 | memset((void *)vb->baddr, 0xaa, vb->bsize); |
| 259 | #endif |
| 260 | |
| 261 | BUG_ON(NULL == icd->current_fmt); |
| 262 | |
| 263 | if (buf->fmt != icd->current_fmt || |
Guennadi Liakhovetski | a0705b0 | 2009-08-25 11:46:17 -0300 | [diff] [blame] | 264 | vb->width != icd->rect_current.width || |
| 265 | vb->height != icd->rect_current.height || |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 266 | vb->field != field) { |
| 267 | buf->fmt = icd->current_fmt; |
Guennadi Liakhovetski | a0705b0 | 2009-08-25 11:46:17 -0300 | [diff] [blame] | 268 | vb->width = icd->rect_current.width; |
| 269 | vb->height = icd->rect_current.height; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 270 | vb->field = field; |
| 271 | vb->state = VIDEOBUF_NEEDS_INIT; |
| 272 | } |
| 273 | |
| 274 | vb->size = vb->width * vb->height * ((buf->fmt->depth + 7) >> 3); |
| 275 | if (0 != vb->baddr && vb->bsize < vb->size) { |
| 276 | ret = -EINVAL; |
| 277 | goto out; |
| 278 | } |
| 279 | |
| 280 | if (vb->state == VIDEOBUF_NEEDS_INIT) { |
| 281 | ret = videobuf_iolock(vq, vb, NULL); |
| 282 | if (ret) |
| 283 | goto fail; |
| 284 | vb->state = VIDEOBUF_PREPARED; |
| 285 | } |
| 286 | |
| 287 | return 0; |
| 288 | fail: |
| 289 | free_buffer(vq, buf); |
| 290 | out: |
| 291 | return ret; |
| 292 | } |
| 293 | |
Guennadi Liakhovetski | 2dd54a5 | 2009-08-05 20:06:31 -0300 | [diff] [blame] | 294 | /* Called under spinlock_irqsave(&pcdev->lock, ...) */ |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 295 | static void sh_mobile_ceu_videobuf_queue(struct videobuf_queue *vq, |
| 296 | struct videobuf_buffer *vb) |
| 297 | { |
| 298 | struct soc_camera_device *icd = vq->priv_data; |
| 299 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 300 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 301 | |
Hans Verkuil | 86751b0 | 2008-07-18 01:35:14 -0300 | [diff] [blame] | 302 | dev_dbg(&icd->dev, "%s (vb=0x%p) 0x%08lx %zd\n", __func__, |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 303 | vb, vb->baddr, vb->bsize); |
| 304 | |
Magnus Damm | 51354cc | 2008-10-16 19:51:20 -0300 | [diff] [blame] | 305 | vb->state = VIDEOBUF_QUEUED; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 306 | list_add_tail(&vb->queue, &pcdev->capture); |
| 307 | |
| 308 | if (!pcdev->active) { |
| 309 | pcdev->active = vb; |
| 310 | sh_mobile_ceu_capture(pcdev); |
| 311 | } |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 312 | } |
| 313 | |
| 314 | static void sh_mobile_ceu_videobuf_release(struct videobuf_queue *vq, |
| 315 | struct videobuf_buffer *vb) |
| 316 | { |
Guennadi Liakhovetski | cca0e549 | 2009-08-25 11:46:51 -0300 | [diff] [blame] | 317 | struct soc_camera_device *icd = vq->priv_data; |
| 318 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 319 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
| 320 | unsigned long flags; |
| 321 | |
| 322 | spin_lock_irqsave(&pcdev->lock, flags); |
| 323 | |
| 324 | if (pcdev->active == vb) { |
| 325 | /* disable capture (release DMA buffer), reset */ |
| 326 | ceu_write(pcdev, CAPSR, 1 << 16); |
| 327 | pcdev->active = NULL; |
| 328 | } |
| 329 | |
| 330 | if ((vb->state == VIDEOBUF_ACTIVE || vb->state == VIDEOBUF_QUEUED) && |
| 331 | !list_empty(&vb->queue)) { |
| 332 | vb->state = VIDEOBUF_ERROR; |
| 333 | list_del_init(&vb->queue); |
| 334 | } |
| 335 | |
| 336 | spin_unlock_irqrestore(&pcdev->lock, flags); |
| 337 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 338 | free_buffer(vq, container_of(vb, struct sh_mobile_ceu_buffer, vb)); |
| 339 | } |
| 340 | |
| 341 | static struct videobuf_queue_ops sh_mobile_ceu_videobuf_ops = { |
| 342 | .buf_setup = sh_mobile_ceu_videobuf_setup, |
| 343 | .buf_prepare = sh_mobile_ceu_videobuf_prepare, |
| 344 | .buf_queue = sh_mobile_ceu_videobuf_queue, |
| 345 | .buf_release = sh_mobile_ceu_videobuf_release, |
| 346 | }; |
| 347 | |
| 348 | static irqreturn_t sh_mobile_ceu_irq(int irq, void *data) |
| 349 | { |
| 350 | struct sh_mobile_ceu_dev *pcdev = data; |
| 351 | struct videobuf_buffer *vb; |
| 352 | unsigned long flags; |
| 353 | |
| 354 | spin_lock_irqsave(&pcdev->lock, flags); |
| 355 | |
| 356 | vb = pcdev->active; |
Guennadi Liakhovetski | cca0e549 | 2009-08-25 11:46:51 -0300 | [diff] [blame] | 357 | if (!vb) |
| 358 | /* Stale interrupt from a released buffer */ |
| 359 | goto out; |
| 360 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 361 | list_del_init(&vb->queue); |
| 362 | |
| 363 | if (!list_empty(&pcdev->capture)) |
| 364 | pcdev->active = list_entry(pcdev->capture.next, |
| 365 | struct videobuf_buffer, queue); |
| 366 | else |
| 367 | pcdev->active = NULL; |
| 368 | |
| 369 | sh_mobile_ceu_capture(pcdev); |
| 370 | |
| 371 | vb->state = VIDEOBUF_DONE; |
| 372 | do_gettimeofday(&vb->ts); |
| 373 | vb->field_count++; |
| 374 | wake_up(&vb->done); |
Guennadi Liakhovetski | cca0e549 | 2009-08-25 11:46:51 -0300 | [diff] [blame] | 375 | |
| 376 | out: |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 377 | spin_unlock_irqrestore(&pcdev->lock, flags); |
| 378 | |
| 379 | return IRQ_HANDLED; |
| 380 | } |
| 381 | |
Guennadi Liakhovetski | 1c3bb74 | 2008-12-18 12:28:54 -0300 | [diff] [blame] | 382 | /* Called with .video_lock held */ |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 383 | static int sh_mobile_ceu_add_device(struct soc_camera_device *icd) |
| 384 | { |
| 385 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 386 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 387 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 388 | if (pcdev->icd) |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 389 | return -EBUSY; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 390 | |
| 391 | dev_info(&icd->dev, |
| 392 | "SuperH Mobile CEU driver attached to camera %d\n", |
| 393 | icd->devnum); |
| 394 | |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 395 | clk_enable(pcdev->clk); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 396 | |
| 397 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset */ |
| 398 | while (ceu_read(pcdev, CSTSR) & 1) |
| 399 | msleep(1); |
| 400 | |
| 401 | pcdev->icd = icd; |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 402 | |
| 403 | return 0; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 404 | } |
| 405 | |
Guennadi Liakhovetski | 1c3bb74 | 2008-12-18 12:28:54 -0300 | [diff] [blame] | 406 | /* Called with .video_lock held */ |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 407 | static void sh_mobile_ceu_remove_device(struct soc_camera_device *icd) |
| 408 | { |
| 409 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 410 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Magnus Damm | 51354cc | 2008-10-16 19:51:20 -0300 | [diff] [blame] | 411 | unsigned long flags; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 412 | |
| 413 | BUG_ON(icd != pcdev->icd); |
| 414 | |
| 415 | /* disable capture, disable interrupts */ |
| 416 | ceu_write(pcdev, CEIER, 0); |
| 417 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset */ |
Magnus Damm | 51354cc | 2008-10-16 19:51:20 -0300 | [diff] [blame] | 418 | |
| 419 | /* make sure active buffer is canceled */ |
| 420 | spin_lock_irqsave(&pcdev->lock, flags); |
| 421 | if (pcdev->active) { |
| 422 | list_del(&pcdev->active->queue); |
| 423 | pcdev->active->state = VIDEOBUF_ERROR; |
| 424 | wake_up_all(&pcdev->active->done); |
| 425 | pcdev->active = NULL; |
| 426 | } |
| 427 | spin_unlock_irqrestore(&pcdev->lock, flags); |
| 428 | |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 429 | clk_disable(pcdev->clk); |
| 430 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 431 | dev_info(&icd->dev, |
| 432 | "SuperH Mobile CEU driver detached from camera %d\n", |
| 433 | icd->devnum); |
| 434 | |
| 435 | pcdev->icd = NULL; |
| 436 | } |
| 437 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame^] | 438 | static void sh_mobile_ceu_set_rect(struct soc_camera_device *icd, |
| 439 | struct v4l2_rect *rect) |
| 440 | { |
| 441 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 442 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
| 443 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
| 444 | int width, height, cfszr_width, cdwdr_width; |
| 445 | unsigned int left_offset, top_offset; |
| 446 | u32 camor; |
| 447 | |
| 448 | if (rect->left > cam->camera_rect.left) { |
| 449 | left_offset = rect->left - cam->camera_rect.left; |
| 450 | } else { |
| 451 | left_offset = 0; |
| 452 | rect->left = cam->camera_rect.left; |
| 453 | } |
| 454 | |
| 455 | if (rect->top > cam->camera_rect.top) { |
| 456 | top_offset = rect->top - cam->camera_rect.top; |
| 457 | } else { |
| 458 | top_offset = 0; |
| 459 | rect->top = cam->camera_rect.top; |
| 460 | } |
| 461 | |
| 462 | dev_dbg(&icd->dev, "Offsets %u:%u\n", left_offset, top_offset); |
| 463 | |
| 464 | if (pcdev->image_mode) { |
| 465 | width = rect->width; |
| 466 | if (!pcdev->is_16bit) |
| 467 | width *= 2; |
| 468 | cfszr_width = cdwdr_width = rect->width; |
| 469 | } else { |
| 470 | width = rect->width * |
| 471 | ((icd->current_fmt->depth + 7) >> 3); |
| 472 | width = pcdev->is_16bit ? width / 2 : width; |
| 473 | cfszr_width = pcdev->is_16bit ? width : width / 2; |
| 474 | cdwdr_width = pcdev->is_16bit ? width * 2 : width; |
| 475 | } |
| 476 | |
| 477 | height = rect->height; |
| 478 | if (pcdev->is_interlaced) { |
| 479 | height /= 2; |
| 480 | cdwdr_width *= 2; |
| 481 | } |
| 482 | |
| 483 | camor = left_offset | (top_offset << 16); |
| 484 | ceu_write(pcdev, CAMOR, camor); |
| 485 | ceu_write(pcdev, CAPWR, (height << 16) | width); |
| 486 | ceu_write(pcdev, CFSZR, (height << 16) | cfszr_width); |
| 487 | ceu_write(pcdev, CDWDR, cdwdr_width); |
| 488 | } |
| 489 | |
| 490 | static u32 capture_save_reset(struct sh_mobile_ceu_dev *pcdev) |
| 491 | { |
| 492 | u32 capsr = ceu_read(pcdev, CAPSR); |
| 493 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset, stop capture */ |
| 494 | return capsr; |
| 495 | } |
| 496 | |
| 497 | static void capture_restore(struct sh_mobile_ceu_dev *pcdev, u32 capsr) |
| 498 | { |
| 499 | unsigned long timeout = jiffies + 10 * HZ; |
| 500 | |
| 501 | /* |
| 502 | * Wait until the end of the current frame. It can take a long time, |
| 503 | * but if it has been aborted by a CAPSR reset, it shoule exit sooner. |
| 504 | */ |
| 505 | while ((ceu_read(pcdev, CSTSR) & 1) && time_before(jiffies, timeout)) |
| 506 | msleep(1); |
| 507 | |
| 508 | if (time_after(jiffies, timeout)) { |
| 509 | dev_err(pcdev->ici.v4l2_dev.dev, |
| 510 | "Timeout waiting for frame end! Interface problem?\n"); |
| 511 | return; |
| 512 | } |
| 513 | |
| 514 | /* Wait until reset clears, this shall not hang... */ |
| 515 | while (ceu_read(pcdev, CAPSR) & (1 << 16)) |
| 516 | udelay(10); |
| 517 | |
| 518 | /* Anything to restore? */ |
| 519 | if (capsr & ~(1 << 16)) |
| 520 | ceu_write(pcdev, CAPSR, capsr); |
| 521 | } |
| 522 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 523 | static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd, |
| 524 | __u32 pixfmt) |
| 525 | { |
| 526 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 527 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame^] | 528 | int ret; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 529 | unsigned long camera_flags, common_flags, value; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame^] | 530 | int yuv_lineskip; |
| 531 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
| 532 | u32 capsr = capture_save_reset(pcdev); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 533 | |
| 534 | camera_flags = icd->ops->query_bus_param(icd); |
| 535 | common_flags = soc_camera_bus_param_compatible(camera_flags, |
Kuninori Morimoto | c354b40 | 2009-02-23 12:12:58 -0300 | [diff] [blame] | 536 | make_bus_param(pcdev)); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 537 | if (!common_flags) |
| 538 | return -EINVAL; |
| 539 | |
| 540 | ret = icd->ops->set_bus_param(icd, common_flags); |
| 541 | if (ret < 0) |
| 542 | return ret; |
| 543 | |
| 544 | switch (common_flags & SOCAM_DATAWIDTH_MASK) { |
| 545 | case SOCAM_DATAWIDTH_8: |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame^] | 546 | pcdev->is_16bit = 0; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 547 | break; |
| 548 | case SOCAM_DATAWIDTH_16: |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame^] | 549 | pcdev->is_16bit = 1; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 550 | break; |
| 551 | default: |
| 552 | return -EINVAL; |
| 553 | } |
| 554 | |
| 555 | ceu_write(pcdev, CRCNTR, 0); |
| 556 | ceu_write(pcdev, CRCMPR, 0); |
| 557 | |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 558 | value = 0x00000010; /* data fetch by default */ |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame^] | 559 | pcdev->image_mode = yuv_lineskip = 0; |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 560 | |
| 561 | switch (icd->current_fmt->fourcc) { |
| 562 | case V4L2_PIX_FMT_NV12: |
| 563 | case V4L2_PIX_FMT_NV21: |
| 564 | yuv_lineskip = 1; /* skip for NV12/21, no skip for NV16/61 */ |
Magnus Damm | 9e4a56d | 2008-12-18 12:45:33 -0300 | [diff] [blame] | 565 | /* fall-through */ |
| 566 | case V4L2_PIX_FMT_NV16: |
| 567 | case V4L2_PIX_FMT_NV61: |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame^] | 568 | pcdev->image_mode = 1; |
| 569 | switch (cam->camera_fmt->fourcc) { |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 570 | case V4L2_PIX_FMT_UYVY: |
| 571 | value = 0x00000000; /* Cb0, Y0, Cr0, Y1 */ |
| 572 | break; |
| 573 | case V4L2_PIX_FMT_VYUY: |
| 574 | value = 0x00000100; /* Cr0, Y0, Cb0, Y1 */ |
| 575 | break; |
| 576 | case V4L2_PIX_FMT_YUYV: |
| 577 | value = 0x00000200; /* Y0, Cb0, Y1, Cr0 */ |
| 578 | break; |
| 579 | case V4L2_PIX_FMT_YVYU: |
| 580 | value = 0x00000300; /* Y0, Cr0, Y1, Cb0 */ |
| 581 | break; |
| 582 | default: |
| 583 | BUG(); |
| 584 | } |
| 585 | } |
| 586 | |
Magnus Damm | 7a1a816 | 2008-12-18 12:50:30 -0300 | [diff] [blame] | 587 | if (icd->current_fmt->fourcc == V4L2_PIX_FMT_NV21 || |
| 588 | icd->current_fmt->fourcc == V4L2_PIX_FMT_NV61) |
Magnus Damm | 9e4a56d | 2008-12-18 12:45:33 -0300 | [diff] [blame] | 589 | value ^= 0x00000100; /* swap U, V to change from NV1x->NVx1 */ |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 590 | |
Magnus Damm | 7a1a816 | 2008-12-18 12:50:30 -0300 | [diff] [blame] | 591 | value |= common_flags & SOCAM_VSYNC_ACTIVE_LOW ? 1 << 1 : 0; |
| 592 | value |= common_flags & SOCAM_HSYNC_ACTIVE_LOW ? 1 << 0 : 0; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame^] | 593 | value |= pcdev->is_16bit ? 1 << 12 : 0; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 594 | ceu_write(pcdev, CAMCR, value); |
| 595 | |
| 596 | ceu_write(pcdev, CAPCR, 0x00300000); |
Guennadi Liakhovetski | e802967 | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 597 | ceu_write(pcdev, CAIFR, pcdev->is_interlaced ? 0x101 : 0); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 598 | |
| 599 | mdelay(1); |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame^] | 600 | sh_mobile_ceu_set_rect(icd, &icd->rect_current); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 601 | |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 602 | ceu_write(pcdev, CFLCR, 0); /* no scaling */ |
Magnus Damm | dd54203 | 2008-10-16 19:50:22 -0300 | [diff] [blame] | 603 | |
| 604 | /* A few words about byte order (observed in Big Endian mode) |
| 605 | * |
| 606 | * In data fetch mode bytes are received in chunks of 8 bytes. |
| 607 | * D0, D1, D2, D3, D4, D5, D6, D7 (D0 received first) |
| 608 | * |
| 609 | * The data is however by default written to memory in reverse order: |
| 610 | * D7, D6, D5, D4, D3, D2, D1, D0 (D7 written to lowest byte) |
| 611 | * |
| 612 | * The lowest three bits of CDOCR allows us to do swapping, |
Magnus Damm | 2c0a072 | 2008-10-16 19:50:56 -0300 | [diff] [blame] | 613 | * using 7 we swap the data bytes to match the incoming order: |
| 614 | * D0, D1, D2, D3, D4, D5, D6, D7 |
Magnus Damm | dd54203 | 2008-10-16 19:50:22 -0300 | [diff] [blame] | 615 | */ |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 616 | value = 0x00000017; |
| 617 | if (yuv_lineskip) |
| 618 | value &= ~0x00000010; /* convert 4:2:2 -> 4:2:0 */ |
| 619 | |
| 620 | ceu_write(pcdev, CDOCR, value); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 621 | ceu_write(pcdev, CFWCR, 0); /* keep "datafetch firewall" disabled */ |
| 622 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame^] | 623 | dev_dbg(&icd->dev, "S_FMT successful for %c%c%c%c %ux%u@%u.%u\n", |
| 624 | pixfmt & 0xff, (pixfmt >> 8) & 0xff, |
| 625 | (pixfmt >> 16) & 0xff, (pixfmt >> 24) & 0xff, |
| 626 | icd->rect_current.width, icd->rect_current.height, |
| 627 | icd->rect_current.left, icd->rect_current.top); |
| 628 | |
| 629 | capture_restore(pcdev, capsr); |
| 630 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 631 | /* not in bundle mode: skip CBDSR, CDAYR2, CDACR2, CDBYR2, CDBCR2 */ |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 632 | return 0; |
| 633 | } |
| 634 | |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 635 | static int sh_mobile_ceu_try_bus_param(struct soc_camera_device *icd) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 636 | { |
| 637 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 638 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
| 639 | unsigned long camera_flags, common_flags; |
| 640 | |
| 641 | camera_flags = icd->ops->query_bus_param(icd); |
| 642 | common_flags = soc_camera_bus_param_compatible(camera_flags, |
Kuninori Morimoto | c354b40 | 2009-02-23 12:12:58 -0300 | [diff] [blame] | 643 | make_bus_param(pcdev)); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 644 | if (!common_flags) |
| 645 | return -EINVAL; |
| 646 | |
| 647 | return 0; |
| 648 | } |
| 649 | |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 650 | static const struct soc_camera_data_format sh_mobile_ceu_formats[] = { |
| 651 | { |
| 652 | .name = "NV12", |
| 653 | .depth = 12, |
| 654 | .fourcc = V4L2_PIX_FMT_NV12, |
| 655 | .colorspace = V4L2_COLORSPACE_JPEG, |
| 656 | }, |
| 657 | { |
| 658 | .name = "NV21", |
| 659 | .depth = 12, |
| 660 | .fourcc = V4L2_PIX_FMT_NV21, |
| 661 | .colorspace = V4L2_COLORSPACE_JPEG, |
| 662 | }, |
Magnus Damm | 9e4a56d | 2008-12-18 12:45:33 -0300 | [diff] [blame] | 663 | { |
| 664 | .name = "NV16", |
| 665 | .depth = 16, |
| 666 | .fourcc = V4L2_PIX_FMT_NV16, |
| 667 | .colorspace = V4L2_COLORSPACE_JPEG, |
| 668 | }, |
| 669 | { |
| 670 | .name = "NV61", |
| 671 | .depth = 16, |
| 672 | .fourcc = V4L2_PIX_FMT_NV61, |
| 673 | .colorspace = V4L2_COLORSPACE_JPEG, |
| 674 | }, |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 675 | }; |
| 676 | |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 677 | static int sh_mobile_ceu_get_formats(struct soc_camera_device *icd, int idx, |
| 678 | struct soc_camera_format_xlate *xlate) |
| 679 | { |
| 680 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 681 | int ret, k, n; |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 682 | int formats = 0; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame^] | 683 | struct sh_mobile_ceu_cam *cam; |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 684 | |
| 685 | ret = sh_mobile_ceu_try_bus_param(icd); |
| 686 | if (ret < 0) |
| 687 | return 0; |
| 688 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame^] | 689 | if (!icd->host_priv) { |
| 690 | cam = kzalloc(sizeof(*cam), GFP_KERNEL); |
| 691 | if (!cam) |
| 692 | return -ENOMEM; |
| 693 | |
| 694 | icd->host_priv = cam; |
| 695 | } else { |
| 696 | cam = icd->host_priv; |
| 697 | } |
| 698 | |
Guennadi Liakhovetski | c8329ac | 2009-02-23 12:12:58 -0300 | [diff] [blame] | 699 | /* Beginning of a pass */ |
| 700 | if (!idx) |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame^] | 701 | cam->extra_fmt = NULL; |
Guennadi Liakhovetski | c8329ac | 2009-02-23 12:12:58 -0300 | [diff] [blame] | 702 | |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 703 | switch (icd->formats[idx].fourcc) { |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 704 | case V4L2_PIX_FMT_UYVY: |
| 705 | case V4L2_PIX_FMT_VYUY: |
| 706 | case V4L2_PIX_FMT_YUYV: |
| 707 | case V4L2_PIX_FMT_YVYU: |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame^] | 708 | if (cam->extra_fmt) |
Guennadi Liakhovetski | c8329ac | 2009-02-23 12:12:58 -0300 | [diff] [blame] | 709 | goto add_single_format; |
| 710 | |
| 711 | /* |
| 712 | * Our case is simple so far: for any of the above four camera |
| 713 | * formats we add all our four synthesized NV* formats, so, |
| 714 | * just marking the device with a single flag suffices. If |
| 715 | * the format generation rules are more complex, you would have |
| 716 | * to actually hang your already added / counted formats onto |
| 717 | * the host_priv pointer and check whether the format you're |
| 718 | * going to add now is already there. |
| 719 | */ |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame^] | 720 | cam->extra_fmt = (void *)sh_mobile_ceu_formats; |
Guennadi Liakhovetski | c8329ac | 2009-02-23 12:12:58 -0300 | [diff] [blame] | 721 | |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 722 | n = ARRAY_SIZE(sh_mobile_ceu_formats); |
| 723 | formats += n; |
| 724 | for (k = 0; xlate && k < n; k++) { |
| 725 | xlate->host_fmt = &sh_mobile_ceu_formats[k]; |
| 726 | xlate->cam_fmt = icd->formats + idx; |
| 727 | xlate->buswidth = icd->formats[idx].depth; |
| 728 | xlate++; |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 729 | dev_dbg(ici->v4l2_dev.dev, "Providing format %s using %s\n", |
Magnus Damm | 8be65dc | 2008-12-18 12:38:06 -0300 | [diff] [blame] | 730 | sh_mobile_ceu_formats[k].name, |
| 731 | icd->formats[idx].name); |
| 732 | } |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 733 | default: |
Guennadi Liakhovetski | c8329ac | 2009-02-23 12:12:58 -0300 | [diff] [blame] | 734 | add_single_format: |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 735 | /* Generic pass-through */ |
| 736 | formats++; |
| 737 | if (xlate) { |
| 738 | xlate->host_fmt = icd->formats + idx; |
| 739 | xlate->cam_fmt = icd->formats + idx; |
| 740 | xlate->buswidth = icd->formats[idx].depth; |
| 741 | xlate++; |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 742 | dev_dbg(ici->v4l2_dev.dev, |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 743 | "Providing format %s in pass-through mode\n", |
| 744 | icd->formats[idx].name); |
| 745 | } |
| 746 | } |
| 747 | |
| 748 | return formats; |
| 749 | } |
| 750 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame^] | 751 | static void sh_mobile_ceu_put_formats(struct soc_camera_device *icd) |
| 752 | { |
| 753 | kfree(icd->host_priv); |
| 754 | icd->host_priv = NULL; |
| 755 | } |
| 756 | |
| 757 | static bool is_smaller(struct v4l2_rect *r1, struct v4l2_rect *r2) |
| 758 | { |
| 759 | return r1->width < r2->width || r1->height < r2->height; |
| 760 | } |
| 761 | |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 762 | static int sh_mobile_ceu_set_crop(struct soc_camera_device *icd, |
| 763 | struct v4l2_rect *rect) |
| 764 | { |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame^] | 765 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 766 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
| 767 | struct v4l2_rect cam_rect = *rect; |
| 768 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
| 769 | unsigned short width, height; |
| 770 | u32 capsr; |
| 771 | int ret; |
| 772 | |
| 773 | capsr = capture_save_reset(pcdev); |
| 774 | dev_dbg(&icd->dev, "CAPSR %x\n", capsr); |
| 775 | |
| 776 | ret = icd->ops->set_crop(icd, &cam_rect); |
| 777 | if (!ret && !memcmp(rect, &cam_rect, sizeof(*rect))) { |
| 778 | dev_dbg(&icd->dev, "Camera S_CROP successful for %ux%u@%u.%u\n", |
| 779 | cam_rect.width, cam_rect.height, |
| 780 | cam_rect.left, cam_rect.top); |
| 781 | goto ceu_set_rect; |
| 782 | } |
| 783 | |
| 784 | /* Try to fix cropping, that camera hasn't managed to do */ |
| 785 | dev_dbg(&icd->dev, "Fix camera S_CROP %d for %ux%u@%u.%u\n", |
| 786 | ret, cam_rect.width, cam_rect.height, |
| 787 | cam_rect.left, cam_rect.top); |
| 788 | |
| 789 | /* |
| 790 | * Popular special case - some cameras can only handle fixed sizes like |
| 791 | * QVGA, VGA,... Take care to avoid infinite loop. |
| 792 | */ |
| 793 | width = max(cam_rect.width, 1) * 2; |
| 794 | height = max(cam_rect.height, 1) * 2; |
| 795 | while (!ret && is_smaller(&cam_rect, rect) && |
| 796 | (icd->rect_max.width >= width && |
| 797 | icd->rect_max.height >= height)) { |
| 798 | cam_rect.width = width; |
| 799 | cam_rect.height = height; |
| 800 | |
| 801 | if (cam_rect.width + cam_rect.left > |
| 802 | icd->rect_max.width + icd->rect_max.left) |
| 803 | cam_rect.left = icd->rect_max.width + |
| 804 | icd->rect_max.left - cam_rect.width; |
| 805 | |
| 806 | if (cam_rect.height + cam_rect.top > |
| 807 | icd->rect_max.height + icd->rect_max.top) |
| 808 | cam_rect.top = icd->rect_max.height + |
| 809 | icd->rect_max.top - cam_rect.height; |
| 810 | |
| 811 | ret = icd->ops->set_crop(icd, &cam_rect); |
| 812 | dev_dbg(&icd->dev, "Camera S_CROP %d for %ux%u@%u.%u\n", |
| 813 | ret, cam_rect.width, cam_rect.height, |
| 814 | cam_rect.left, cam_rect.top); |
| 815 | width *= 2; |
| 816 | height *= 2; |
| 817 | } |
| 818 | |
| 819 | /* |
| 820 | * If the camera failed to configure cropping, it should not modify the |
| 821 | * rectangle |
| 822 | */ |
| 823 | if ((ret < 0 && is_smaller(&icd->rect_current, rect)) || |
| 824 | is_smaller(&cam_rect, rect)) { |
| 825 | /* |
| 826 | * The camera failed to configure a suitable cropping, |
| 827 | * we cannot use the current rectangle, set to max |
| 828 | */ |
| 829 | cam_rect = icd->rect_max; |
| 830 | ret = icd->ops->set_crop(icd, &cam_rect); |
| 831 | dev_dbg(&icd->dev, "Camera S_CROP %d for max %ux%u@%u.%u\n", |
| 832 | ret, cam_rect.width, cam_rect.height, |
| 833 | cam_rect.left, cam_rect.top); |
| 834 | if (ret < 0) |
| 835 | /* All failed, hopefully resume current capture */ |
| 836 | goto resume_capture; |
| 837 | } |
| 838 | |
| 839 | /* We now have a rectangle, larger than requested, let's crop */ |
| 840 | |
| 841 | /* |
| 842 | * We have to preserve camera rectangle between close() / open(), |
| 843 | * because soc-camera core calls .set_fmt() on each first open() with |
| 844 | * last before last close() _user_ rectangle, which can be different |
| 845 | * from camera rectangle. |
| 846 | */ |
| 847 | dev_dbg(&icd->dev, "SH S_CROP from %ux%u@%u.%u to %ux%u@%u.%u\n", |
| 848 | cam_rect.width, cam_rect.height, cam_rect.left, cam_rect.top, |
| 849 | rect->width, rect->height, rect->left, rect->top); |
| 850 | |
| 851 | ret = 0; |
| 852 | |
| 853 | ceu_set_rect: |
| 854 | cam->camera_rect = cam_rect; |
| 855 | |
| 856 | /* Set CAMOR, CAPWR, CFSZR, take care of CDWDR */ |
| 857 | if (pcdev->active) |
| 858 | capsr |= 1; |
| 859 | sh_mobile_ceu_set_rect(icd, rect); |
| 860 | capture_restore(pcdev, capsr); |
| 861 | |
| 862 | resume_capture: |
| 863 | |
| 864 | /* Even if only camera cropping succeeded */ |
| 865 | return ret; |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 866 | } |
| 867 | |
Guennadi Liakhovetski | d8fac21 | 2008-12-01 09:45:21 -0300 | [diff] [blame] | 868 | static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd, |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 869 | struct v4l2_format *f) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 870 | { |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 871 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame^] | 872 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
| 873 | struct v4l2_pix_format *pix = &f->fmt.pix; |
| 874 | __u32 pixfmt = pix->pixelformat; |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 875 | const struct soc_camera_format_xlate *xlate; |
Guennadi Liakhovetski | 25c4d74 | 2008-12-01 09:44:59 -0300 | [diff] [blame] | 876 | int ret; |
| 877 | |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 878 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
| 879 | if (!xlate) { |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 880 | dev_warn(ici->v4l2_dev.dev, "Format %x not found\n", pixfmt); |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 881 | return -EINVAL; |
Guennadi Liakhovetski | 25c4d74 | 2008-12-01 09:44:59 -0300 | [diff] [blame] | 882 | } |
| 883 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame^] | 884 | pix->pixelformat = xlate->cam_fmt->fourcc; |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 885 | ret = v4l2_device_call_until_err(&ici->v4l2_dev, (__u32)icd, video, s_fmt, f); |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame^] | 886 | pix->pixelformat = pixfmt; |
Guennadi Liakhovetski | 0ad675e | 2009-02-23 12:11:25 -0300 | [diff] [blame] | 887 | if (!ret) { |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 888 | icd->buswidth = xlate->buswidth; |
| 889 | icd->current_fmt = xlate->host_fmt; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame^] | 890 | cam->camera_fmt = xlate->cam_fmt; |
| 891 | cam->camera_rect.width = pix->width; |
| 892 | cam->camera_rect.height = pix->height; |
| 893 | cam->camera_rect.left = icd->rect_current.left; |
| 894 | cam->camera_rect.top = icd->rect_current.top; |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 895 | } |
Guennadi Liakhovetski | 25c4d74 | 2008-12-01 09:44:59 -0300 | [diff] [blame] | 896 | |
| 897 | return ret; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 898 | } |
| 899 | |
Guennadi Liakhovetski | d8fac21 | 2008-12-01 09:45:21 -0300 | [diff] [blame] | 900 | static int sh_mobile_ceu_try_fmt(struct soc_camera_device *icd, |
| 901 | struct v4l2_format *f) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 902 | { |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 903 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
Kuninori Morimoto | ccab8a2 | 2008-12-18 12:51:21 -0300 | [diff] [blame] | 904 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 905 | const struct soc_camera_format_xlate *xlate; |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame^] | 906 | struct v4l2_pix_format *pix = &f->fmt.pix; |
| 907 | __u32 pixfmt = pix->pixelformat; |
Kuninori Morimoto | ccab8a2 | 2008-12-18 12:51:21 -0300 | [diff] [blame] | 908 | int ret; |
Guennadi Liakhovetski | a2c8c68 | 2008-12-01 09:44:53 -0300 | [diff] [blame] | 909 | |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 910 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
| 911 | if (!xlate) { |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 912 | dev_warn(ici->v4l2_dev.dev, "Format %x not found\n", pixfmt); |
Guennadi Liakhovetski | 25c4d74 | 2008-12-01 09:44:59 -0300 | [diff] [blame] | 913 | return -EINVAL; |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 914 | } |
Guennadi Liakhovetski | 25c4d74 | 2008-12-01 09:44:59 -0300 | [diff] [blame] | 915 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 916 | /* FIXME: calculate using depth and bus width */ |
| 917 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame^] | 918 | v4l_bound_align_image(&pix->width, 2, 2560, 1, |
| 919 | &pix->height, 4, 1920, 2, 0); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 920 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame^] | 921 | pix->bytesperline = pix->width * |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 922 | DIV_ROUND_UP(xlate->host_fmt->depth, 8); |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame^] | 923 | pix->sizeimage = pix->height * pix->bytesperline; |
Guennadi Liakhovetski | 25c4d74 | 2008-12-01 09:44:59 -0300 | [diff] [blame] | 924 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame^] | 925 | pix->pixelformat = xlate->cam_fmt->fourcc; |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 926 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 927 | /* limit to sensor capabilities */ |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 928 | ret = v4l2_device_call_until_err(&ici->v4l2_dev, (__u32)icd, video, try_fmt, f); |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame^] | 929 | pix->pixelformat = pixfmt; |
Kuninori Morimoto | ccab8a2 | 2008-12-18 12:51:21 -0300 | [diff] [blame] | 930 | if (ret < 0) |
| 931 | return ret; |
| 932 | |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame^] | 933 | switch (pix->field) { |
Kuninori Morimoto | ccab8a2 | 2008-12-18 12:51:21 -0300 | [diff] [blame] | 934 | case V4L2_FIELD_INTERLACED: |
Guennadi Liakhovetski | e802967 | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 935 | pcdev->is_interlaced = 1; |
Kuninori Morimoto | ccab8a2 | 2008-12-18 12:51:21 -0300 | [diff] [blame] | 936 | break; |
| 937 | case V4L2_FIELD_ANY: |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame^] | 938 | pix->field = V4L2_FIELD_NONE; |
Kuninori Morimoto | ccab8a2 | 2008-12-18 12:51:21 -0300 | [diff] [blame] | 939 | /* fall-through */ |
| 940 | case V4L2_FIELD_NONE: |
Guennadi Liakhovetski | e802967 | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 941 | pcdev->is_interlaced = 0; |
Kuninori Morimoto | ccab8a2 | 2008-12-18 12:51:21 -0300 | [diff] [blame] | 942 | break; |
| 943 | default: |
| 944 | ret = -EINVAL; |
| 945 | break; |
| 946 | } |
| 947 | |
| 948 | return ret; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 949 | } |
| 950 | |
| 951 | static int sh_mobile_ceu_reqbufs(struct soc_camera_file *icf, |
| 952 | struct v4l2_requestbuffers *p) |
| 953 | { |
| 954 | int i; |
| 955 | |
| 956 | /* This is for locking debugging only. I removed spinlocks and now I |
| 957 | * check whether .prepare is ever called on a linked buffer, or whether |
| 958 | * a dma IRQ can occur for an in-work or unlinked buffer. Until now |
| 959 | * it hadn't triggered */ |
| 960 | for (i = 0; i < p->count; i++) { |
| 961 | struct sh_mobile_ceu_buffer *buf; |
| 962 | |
| 963 | buf = container_of(icf->vb_vidq.bufs[i], |
| 964 | struct sh_mobile_ceu_buffer, vb); |
| 965 | INIT_LIST_HEAD(&buf->vb.queue); |
| 966 | } |
| 967 | |
| 968 | return 0; |
| 969 | } |
| 970 | |
| 971 | static unsigned int sh_mobile_ceu_poll(struct file *file, poll_table *pt) |
| 972 | { |
| 973 | struct soc_camera_file *icf = file->private_data; |
| 974 | struct sh_mobile_ceu_buffer *buf; |
| 975 | |
| 976 | buf = list_entry(icf->vb_vidq.stream.next, |
| 977 | struct sh_mobile_ceu_buffer, vb.stream); |
| 978 | |
| 979 | poll_wait(file, &buf->vb.done, pt); |
| 980 | |
| 981 | if (buf->vb.state == VIDEOBUF_DONE || |
| 982 | buf->vb.state == VIDEOBUF_ERROR) |
| 983 | return POLLIN|POLLRDNORM; |
| 984 | |
| 985 | return 0; |
| 986 | } |
| 987 | |
| 988 | static int sh_mobile_ceu_querycap(struct soc_camera_host *ici, |
| 989 | struct v4l2_capability *cap) |
| 990 | { |
| 991 | strlcpy(cap->card, "SuperH_Mobile_CEU", sizeof(cap->card)); |
| 992 | cap->version = KERNEL_VERSION(0, 0, 5); |
| 993 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; |
| 994 | return 0; |
| 995 | } |
| 996 | |
| 997 | static void sh_mobile_ceu_init_videobuf(struct videobuf_queue *q, |
| 998 | struct soc_camera_device *icd) |
| 999 | { |
| 1000 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 1001 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
| 1002 | |
| 1003 | videobuf_queue_dma_contig_init(q, |
| 1004 | &sh_mobile_ceu_videobuf_ops, |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1005 | ici->v4l2_dev.dev, &pcdev->lock, |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1006 | V4L2_BUF_TYPE_VIDEO_CAPTURE, |
Guennadi Liakhovetski | e802967 | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 1007 | pcdev->is_interlaced ? |
| 1008 | V4L2_FIELD_INTERLACED : V4L2_FIELD_NONE, |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1009 | sizeof(struct sh_mobile_ceu_buffer), |
| 1010 | icd); |
| 1011 | } |
| 1012 | |
Guennadi Liakhovetski | 4a6110b | 2009-08-25 11:44:15 -0300 | [diff] [blame] | 1013 | static int sh_mobile_ceu_get_ctrl(struct soc_camera_device *icd, |
| 1014 | struct v4l2_control *ctrl) |
| 1015 | { |
| 1016 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 1017 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
| 1018 | u32 val; |
| 1019 | |
| 1020 | switch (ctrl->id) { |
| 1021 | case V4L2_CID_SHARPNESS: |
| 1022 | val = ceu_read(pcdev, CLFCR); |
| 1023 | ctrl->value = val ^ 1; |
| 1024 | return 0; |
| 1025 | } |
| 1026 | return -ENOIOCTLCMD; |
| 1027 | } |
| 1028 | |
| 1029 | static int sh_mobile_ceu_set_ctrl(struct soc_camera_device *icd, |
| 1030 | struct v4l2_control *ctrl) |
| 1031 | { |
| 1032 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 1033 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
| 1034 | |
| 1035 | switch (ctrl->id) { |
| 1036 | case V4L2_CID_SHARPNESS: |
| 1037 | switch (icd->current_fmt->fourcc) { |
| 1038 | case V4L2_PIX_FMT_NV12: |
| 1039 | case V4L2_PIX_FMT_NV21: |
| 1040 | case V4L2_PIX_FMT_NV16: |
| 1041 | case V4L2_PIX_FMT_NV61: |
| 1042 | ceu_write(pcdev, CLFCR, !ctrl->value); |
| 1043 | return 0; |
| 1044 | } |
| 1045 | return -EINVAL; |
| 1046 | } |
| 1047 | return -ENOIOCTLCMD; |
| 1048 | } |
| 1049 | |
| 1050 | static const struct v4l2_queryctrl sh_mobile_ceu_controls[] = { |
| 1051 | { |
| 1052 | .id = V4L2_CID_SHARPNESS, |
| 1053 | .type = V4L2_CTRL_TYPE_BOOLEAN, |
| 1054 | .name = "Low-pass filter", |
| 1055 | .minimum = 0, |
| 1056 | .maximum = 1, |
| 1057 | .step = 1, |
| 1058 | .default_value = 0, |
| 1059 | }, |
| 1060 | }; |
| 1061 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1062 | static struct soc_camera_host_ops sh_mobile_ceu_host_ops = { |
| 1063 | .owner = THIS_MODULE, |
| 1064 | .add = sh_mobile_ceu_add_device, |
| 1065 | .remove = sh_mobile_ceu_remove_device, |
Magnus Damm | 9414de3 | 2008-12-18 11:49:06 -0300 | [diff] [blame] | 1066 | .get_formats = sh_mobile_ceu_get_formats, |
Guennadi Liakhovetski | 904078f | 2009-08-25 11:46:52 -0300 | [diff] [blame^] | 1067 | .put_formats = sh_mobile_ceu_put_formats, |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 1068 | .set_crop = sh_mobile_ceu_set_crop, |
Guennadi Liakhovetski | d8fac21 | 2008-12-01 09:45:21 -0300 | [diff] [blame] | 1069 | .set_fmt = sh_mobile_ceu_set_fmt, |
| 1070 | .try_fmt = sh_mobile_ceu_try_fmt, |
Guennadi Liakhovetski | 4a6110b | 2009-08-25 11:44:15 -0300 | [diff] [blame] | 1071 | .set_ctrl = sh_mobile_ceu_set_ctrl, |
| 1072 | .get_ctrl = sh_mobile_ceu_get_ctrl, |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1073 | .reqbufs = sh_mobile_ceu_reqbufs, |
| 1074 | .poll = sh_mobile_ceu_poll, |
| 1075 | .querycap = sh_mobile_ceu_querycap, |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1076 | .set_bus_param = sh_mobile_ceu_set_bus_param, |
| 1077 | .init_videobuf = sh_mobile_ceu_init_videobuf, |
Guennadi Liakhovetski | 4a6110b | 2009-08-25 11:44:15 -0300 | [diff] [blame] | 1078 | .controls = sh_mobile_ceu_controls, |
| 1079 | .num_controls = ARRAY_SIZE(sh_mobile_ceu_controls), |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1080 | }; |
| 1081 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1082 | static int __devinit sh_mobile_ceu_probe(struct platform_device *pdev) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1083 | { |
| 1084 | struct sh_mobile_ceu_dev *pcdev; |
| 1085 | struct resource *res; |
| 1086 | void __iomem *base; |
| 1087 | unsigned int irq; |
| 1088 | int err = 0; |
| 1089 | |
| 1090 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 1091 | irq = platform_get_irq(pdev, 0); |
| 1092 | if (!res || !irq) { |
| 1093 | dev_err(&pdev->dev, "Not enough CEU platform resources.\n"); |
| 1094 | err = -ENODEV; |
| 1095 | goto exit; |
| 1096 | } |
| 1097 | |
| 1098 | pcdev = kzalloc(sizeof(*pcdev), GFP_KERNEL); |
| 1099 | if (!pcdev) { |
| 1100 | dev_err(&pdev->dev, "Could not allocate pcdev\n"); |
| 1101 | err = -ENOMEM; |
| 1102 | goto exit; |
| 1103 | } |
| 1104 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1105 | INIT_LIST_HEAD(&pcdev->capture); |
| 1106 | spin_lock_init(&pcdev->lock); |
| 1107 | |
| 1108 | pcdev->pdata = pdev->dev.platform_data; |
| 1109 | if (!pcdev->pdata) { |
| 1110 | err = -EINVAL; |
| 1111 | dev_err(&pdev->dev, "CEU platform data not set.\n"); |
| 1112 | goto exit_kfree; |
| 1113 | } |
| 1114 | |
Guennadi Liakhovetski | eb6c855 | 2009-04-24 12:55:18 -0300 | [diff] [blame] | 1115 | base = ioremap_nocache(res->start, resource_size(res)); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1116 | if (!base) { |
| 1117 | err = -ENXIO; |
| 1118 | dev_err(&pdev->dev, "Unable to ioremap CEU registers.\n"); |
| 1119 | goto exit_kfree; |
| 1120 | } |
| 1121 | |
| 1122 | pcdev->irq = irq; |
| 1123 | pcdev->base = base; |
| 1124 | pcdev->video_limit = 0; /* only enabled if second resource exists */ |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1125 | |
| 1126 | res = platform_get_resource(pdev, IORESOURCE_MEM, 1); |
| 1127 | if (res) { |
| 1128 | err = dma_declare_coherent_memory(&pdev->dev, res->start, |
| 1129 | res->start, |
Guennadi Liakhovetski | eb6c855 | 2009-04-24 12:55:18 -0300 | [diff] [blame] | 1130 | resource_size(res), |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1131 | DMA_MEMORY_MAP | |
| 1132 | DMA_MEMORY_EXCLUSIVE); |
| 1133 | if (!err) { |
| 1134 | dev_err(&pdev->dev, "Unable to declare CEU memory.\n"); |
| 1135 | err = -ENXIO; |
| 1136 | goto exit_iounmap; |
| 1137 | } |
| 1138 | |
Guennadi Liakhovetski | eb6c855 | 2009-04-24 12:55:18 -0300 | [diff] [blame] | 1139 | pcdev->video_limit = resource_size(res); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1140 | } |
| 1141 | |
| 1142 | /* request irq */ |
| 1143 | err = request_irq(pcdev->irq, sh_mobile_ceu_irq, IRQF_DISABLED, |
Kay Sievers | af128a1 | 2008-10-30 00:51:46 -0300 | [diff] [blame] | 1144 | dev_name(&pdev->dev), pcdev); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1145 | if (err) { |
| 1146 | dev_err(&pdev->dev, "Unable to register CEU interrupt.\n"); |
| 1147 | goto exit_release_mem; |
| 1148 | } |
| 1149 | |
Magnus Damm | 6d1386c | 2009-08-14 10:49:17 +0000 | [diff] [blame] | 1150 | pm_suspend_ignore_children(&pdev->dev, true); |
| 1151 | pm_runtime_enable(&pdev->dev); |
| 1152 | pm_runtime_resume(&pdev->dev); |
Magnus Damm | a42b6dd | 2008-10-31 20:21:44 +0900 | [diff] [blame] | 1153 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1154 | pcdev->ici.priv = pcdev; |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1155 | pcdev->ici.v4l2_dev.dev = &pdev->dev; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1156 | pcdev->ici.nr = pdev->id; |
Kay Sievers | af128a1 | 2008-10-30 00:51:46 -0300 | [diff] [blame] | 1157 | pcdev->ici.drv_name = dev_name(&pdev->dev); |
| 1158 | pcdev->ici.ops = &sh_mobile_ceu_host_ops; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1159 | |
| 1160 | err = soc_camera_host_register(&pcdev->ici); |
| 1161 | if (err) |
Magnus Damm | 6d1386c | 2009-08-14 10:49:17 +0000 | [diff] [blame] | 1162 | goto exit_free_irq; |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1163 | |
| 1164 | return 0; |
| 1165 | |
| 1166 | exit_free_irq: |
| 1167 | free_irq(pcdev->irq, pcdev); |
| 1168 | exit_release_mem: |
| 1169 | if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) |
| 1170 | dma_release_declared_memory(&pdev->dev); |
| 1171 | exit_iounmap: |
| 1172 | iounmap(base); |
| 1173 | exit_kfree: |
| 1174 | kfree(pcdev); |
| 1175 | exit: |
| 1176 | return err; |
| 1177 | } |
| 1178 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1179 | static int __devexit sh_mobile_ceu_remove(struct platform_device *pdev) |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1180 | { |
Guennadi Liakhovetski | eff505f | 2009-04-24 12:55:48 -0300 | [diff] [blame] | 1181 | struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev); |
| 1182 | struct sh_mobile_ceu_dev *pcdev = container_of(soc_host, |
| 1183 | struct sh_mobile_ceu_dev, ici); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1184 | |
Guennadi Liakhovetski | eff505f | 2009-04-24 12:55:48 -0300 | [diff] [blame] | 1185 | soc_camera_host_unregister(soc_host); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1186 | free_irq(pcdev->irq, pcdev); |
| 1187 | if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) |
| 1188 | dma_release_declared_memory(&pdev->dev); |
| 1189 | iounmap(pcdev->base); |
| 1190 | kfree(pcdev); |
| 1191 | return 0; |
| 1192 | } |
| 1193 | |
Magnus Damm | 6d1386c | 2009-08-14 10:49:17 +0000 | [diff] [blame] | 1194 | static int sh_mobile_ceu_runtime_nop(struct device *dev) |
| 1195 | { |
| 1196 | /* Runtime PM callback shared between ->runtime_suspend() |
| 1197 | * and ->runtime_resume(). Simply returns success. |
| 1198 | * |
| 1199 | * This driver re-initializes all registers after |
| 1200 | * pm_runtime_get_sync() anyway so there is no need |
| 1201 | * to save and restore registers here. |
| 1202 | */ |
| 1203 | return 0; |
| 1204 | } |
| 1205 | |
| 1206 | static struct dev_pm_ops sh_mobile_ceu_dev_pm_ops = { |
| 1207 | .runtime_suspend = sh_mobile_ceu_runtime_nop, |
| 1208 | .runtime_resume = sh_mobile_ceu_runtime_nop, |
| 1209 | }; |
| 1210 | |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1211 | static struct platform_driver sh_mobile_ceu_driver = { |
| 1212 | .driver = { |
| 1213 | .name = "sh_mobile_ceu", |
Magnus Damm | 6d1386c | 2009-08-14 10:49:17 +0000 | [diff] [blame] | 1214 | .pm = &sh_mobile_ceu_dev_pm_ops, |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1215 | }, |
| 1216 | .probe = sh_mobile_ceu_probe, |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1217 | .remove = __exit_p(sh_mobile_ceu_remove), |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1218 | }; |
| 1219 | |
| 1220 | static int __init sh_mobile_ceu_init(void) |
| 1221 | { |
| 1222 | return platform_driver_register(&sh_mobile_ceu_driver); |
| 1223 | } |
| 1224 | |
| 1225 | static void __exit sh_mobile_ceu_exit(void) |
| 1226 | { |
Paul Mundt | 01c1e4c | 2008-08-01 19:48:51 -0300 | [diff] [blame] | 1227 | platform_driver_unregister(&sh_mobile_ceu_driver); |
Magnus Damm | 0d3244d | 2008-07-16 22:59:28 -0300 | [diff] [blame] | 1228 | } |
| 1229 | |
| 1230 | module_init(sh_mobile_ceu_init); |
| 1231 | module_exit(sh_mobile_ceu_exit); |
| 1232 | |
| 1233 | MODULE_DESCRIPTION("SuperH Mobile CEU driver"); |
| 1234 | MODULE_AUTHOR("Magnus Damm"); |
| 1235 | MODULE_LICENSE("GPL"); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1236 | MODULE_ALIAS("platform:sh_mobile_ceu"); |