Sylwester Nawrocki | babde1c | 2012-08-22 20:09:18 -0300 | [diff] [blame] | 1 | /* |
| 2 | * s3c24xx/s3c64xx SoC series Camera Interface (CAMIF) driver |
| 3 | * |
| 4 | * Copyright (C) 2012 Sylwester Nawrocki <sylvester.nawrocki@gmail.com> |
| 5 | * Copyright (C) 2012 Tomasz Figa <tomasz.figa@gmail.com> |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published |
| 9 | * by the Free Software Foundation, either version 2 of the License, |
| 10 | * or (at your option) any later version. |
| 11 | */ |
| 12 | #define pr_fmt(fmt) "%s:%d " fmt, __func__, __LINE__ |
| 13 | |
| 14 | #include <linux/bug.h> |
| 15 | #include <linux/clk.h> |
| 16 | #include <linux/delay.h> |
| 17 | #include <linux/device.h> |
| 18 | #include <linux/errno.h> |
| 19 | #include <linux/gpio.h> |
| 20 | #include <linux/i2c.h> |
| 21 | #include <linux/interrupt.h> |
| 22 | #include <linux/io.h> |
| 23 | #include <linux/kernel.h> |
| 24 | #include <linux/list.h> |
| 25 | #include <linux/module.h> |
| 26 | #include <linux/platform_device.h> |
| 27 | #include <linux/pm_runtime.h> |
| 28 | #include <linux/slab.h> |
| 29 | #include <linux/types.h> |
Sachin Kamat | 250539a | 2012-12-03 02:44:31 -0300 | [diff] [blame] | 30 | #include <linux/version.h> |
Sylwester Nawrocki | babde1c | 2012-08-22 20:09:18 -0300 | [diff] [blame] | 31 | |
| 32 | #include <media/media-device.h> |
| 33 | #include <media/v4l2-ctrls.h> |
| 34 | #include <media/v4l2-ioctl.h> |
| 35 | #include <media/videobuf2-core.h> |
| 36 | #include <media/videobuf2-dma-contig.h> |
| 37 | |
| 38 | #include "camif-core.h" |
| 39 | |
| 40 | static char *camif_clocks[CLK_MAX_NUM] = { |
| 41 | /* HCLK CAMIF clock */ |
| 42 | [CLK_GATE] = "camif", |
| 43 | /* CAMIF / external camera sensor master clock */ |
| 44 | [CLK_CAM] = "camera", |
| 45 | }; |
| 46 | |
| 47 | static const struct camif_fmt camif_formats[] = { |
| 48 | { |
| 49 | .name = "YUV 4:2:2 planar, Y/Cb/Cr", |
| 50 | .fourcc = V4L2_PIX_FMT_YUV422P, |
| 51 | .depth = 16, |
| 52 | .ybpp = 1, |
| 53 | .color = IMG_FMT_YCBCR422P, |
| 54 | .colplanes = 3, |
| 55 | .flags = FMT_FL_S3C24XX_CODEC | |
| 56 | FMT_FL_S3C64XX, |
| 57 | }, { |
| 58 | .name = "YUV 4:2:0 planar, Y/Cb/Cr", |
| 59 | .fourcc = V4L2_PIX_FMT_YUV420, |
| 60 | .depth = 12, |
| 61 | .ybpp = 1, |
| 62 | .color = IMG_FMT_YCBCR420, |
| 63 | .colplanes = 3, |
| 64 | .flags = FMT_FL_S3C24XX_CODEC | |
| 65 | FMT_FL_S3C64XX, |
| 66 | }, { |
| 67 | .name = "YVU 4:2:0 planar, Y/Cr/Cb", |
| 68 | .fourcc = V4L2_PIX_FMT_YVU420, |
| 69 | .depth = 12, |
| 70 | .ybpp = 1, |
| 71 | .color = IMG_FMT_YCRCB420, |
| 72 | .colplanes = 3, |
| 73 | .flags = FMT_FL_S3C24XX_CODEC | |
| 74 | FMT_FL_S3C64XX, |
| 75 | }, { |
| 76 | .name = "RGB565, 16 bpp", |
| 77 | .fourcc = V4L2_PIX_FMT_RGB565X, |
| 78 | .depth = 16, |
| 79 | .ybpp = 2, |
| 80 | .color = IMG_FMT_RGB565, |
| 81 | .colplanes = 1, |
| 82 | .flags = FMT_FL_S3C24XX_PREVIEW | |
| 83 | FMT_FL_S3C64XX, |
| 84 | }, { |
| 85 | .name = "XRGB8888, 32 bpp", |
| 86 | .fourcc = V4L2_PIX_FMT_RGB32, |
| 87 | .depth = 32, |
| 88 | .ybpp = 4, |
| 89 | .color = IMG_FMT_XRGB8888, |
| 90 | .colplanes = 1, |
| 91 | .flags = FMT_FL_S3C24XX_PREVIEW | |
| 92 | FMT_FL_S3C64XX, |
| 93 | }, { |
| 94 | .name = "BGR666", |
| 95 | .fourcc = V4L2_PIX_FMT_BGR666, |
| 96 | .depth = 32, |
| 97 | .ybpp = 4, |
| 98 | .color = IMG_FMT_RGB666, |
| 99 | .colplanes = 1, |
| 100 | .flags = FMT_FL_S3C64XX, |
| 101 | } |
| 102 | }; |
| 103 | |
| 104 | /** |
| 105 | * s3c_camif_find_format() - lookup camif color format by fourcc or an index |
| 106 | * @pixelformat: fourcc to match, ignored if null |
| 107 | * @index: index to the camif_formats array, ignored if negative |
| 108 | */ |
| 109 | const struct camif_fmt *s3c_camif_find_format(struct camif_vp *vp, |
| 110 | const u32 *pixelformat, |
| 111 | int index) |
| 112 | { |
| 113 | const struct camif_fmt *fmt, *def_fmt = NULL; |
| 114 | unsigned int i; |
| 115 | int id = 0; |
| 116 | |
| 117 | if (index >= (int)ARRAY_SIZE(camif_formats)) |
| 118 | return NULL; |
| 119 | |
| 120 | for (i = 0; i < ARRAY_SIZE(camif_formats); ++i) { |
| 121 | fmt = &camif_formats[i]; |
| 122 | if (vp && !(vp->fmt_flags & fmt->flags)) |
| 123 | continue; |
| 124 | if (pixelformat && fmt->fourcc == *pixelformat) |
| 125 | return fmt; |
| 126 | if (index == id) |
| 127 | def_fmt = fmt; |
| 128 | id++; |
| 129 | } |
| 130 | return def_fmt; |
| 131 | } |
| 132 | |
| 133 | static int camif_get_scaler_factor(u32 src, u32 tar, u32 *ratio, u32 *shift) |
| 134 | { |
| 135 | unsigned int sh = 6; |
| 136 | |
| 137 | if (src >= 64 * tar) |
| 138 | return -EINVAL; |
| 139 | |
| 140 | while (sh--) { |
| 141 | unsigned int tmp = 1 << sh; |
| 142 | if (src >= tar * tmp) { |
| 143 | *shift = sh, *ratio = tmp; |
| 144 | return 0; |
| 145 | } |
| 146 | } |
| 147 | *shift = 0, *ratio = 1; |
| 148 | return 0; |
| 149 | } |
| 150 | |
| 151 | int s3c_camif_get_scaler_config(struct camif_vp *vp, |
| 152 | struct camif_scaler *scaler) |
| 153 | { |
| 154 | struct v4l2_rect *camif_crop = &vp->camif->camif_crop; |
| 155 | int source_x = camif_crop->width; |
| 156 | int source_y = camif_crop->height; |
| 157 | int target_x = vp->out_frame.rect.width; |
| 158 | int target_y = vp->out_frame.rect.height; |
| 159 | int ret; |
| 160 | |
| 161 | if (vp->rotation == 90 || vp->rotation == 270) |
| 162 | swap(target_x, target_y); |
| 163 | |
| 164 | ret = camif_get_scaler_factor(source_x, target_x, &scaler->pre_h_ratio, |
| 165 | &scaler->h_shift); |
| 166 | if (ret < 0) |
| 167 | return ret; |
| 168 | |
| 169 | ret = camif_get_scaler_factor(source_y, target_y, &scaler->pre_v_ratio, |
| 170 | &scaler->v_shift); |
| 171 | if (ret < 0) |
| 172 | return ret; |
| 173 | |
| 174 | scaler->pre_dst_width = source_x / scaler->pre_h_ratio; |
| 175 | scaler->pre_dst_height = source_y / scaler->pre_v_ratio; |
| 176 | |
| 177 | scaler->main_h_ratio = (source_x << 8) / (target_x << scaler->h_shift); |
| 178 | scaler->main_v_ratio = (source_y << 8) / (target_y << scaler->v_shift); |
| 179 | |
| 180 | scaler->scaleup_h = (target_x >= source_x); |
| 181 | scaler->scaleup_v = (target_y >= source_y); |
| 182 | |
| 183 | scaler->copy = 0; |
| 184 | |
| 185 | pr_debug("H: ratio: %u, shift: %u. V: ratio: %u, shift: %u.\n", |
| 186 | scaler->pre_h_ratio, scaler->h_shift, |
| 187 | scaler->pre_v_ratio, scaler->v_shift); |
| 188 | |
| 189 | pr_debug("Source: %dx%d, Target: %dx%d, scaleup_h/v: %d/%d\n", |
| 190 | source_x, source_y, target_x, target_y, |
| 191 | scaler->scaleup_h, scaler->scaleup_v); |
| 192 | |
| 193 | return 0; |
| 194 | } |
| 195 | |
| 196 | static int camif_register_sensor(struct camif_dev *camif) |
| 197 | { |
| 198 | struct s3c_camif_sensor_info *sensor = &camif->pdata.sensor; |
| 199 | struct v4l2_device *v4l2_dev = &camif->v4l2_dev; |
| 200 | struct i2c_adapter *adapter; |
| 201 | struct v4l2_subdev_format format; |
| 202 | struct v4l2_subdev *sd; |
| 203 | int ret; |
| 204 | |
| 205 | camif->sensor.sd = NULL; |
| 206 | |
| 207 | if (sensor->i2c_board_info.addr == 0) |
| 208 | return -EINVAL; |
| 209 | |
| 210 | adapter = i2c_get_adapter(sensor->i2c_bus_num); |
| 211 | if (adapter == NULL) { |
| 212 | v4l2_warn(v4l2_dev, "failed to get I2C adapter %d\n", |
| 213 | sensor->i2c_bus_num); |
| 214 | return -EPROBE_DEFER; |
| 215 | } |
| 216 | |
| 217 | sd = v4l2_i2c_new_subdev_board(v4l2_dev, adapter, |
| 218 | &sensor->i2c_board_info, NULL); |
| 219 | if (sd == NULL) { |
| 220 | i2c_put_adapter(adapter); |
| 221 | v4l2_warn(v4l2_dev, "failed to acquire subdev %s\n", |
| 222 | sensor->i2c_board_info.type); |
| 223 | return -EPROBE_DEFER; |
| 224 | } |
| 225 | camif->sensor.sd = sd; |
| 226 | |
| 227 | v4l2_info(v4l2_dev, "registered sensor subdevice %s\n", sd->name); |
| 228 | |
| 229 | /* Get initial pixel format and set it at the camif sink pad */ |
| 230 | format.pad = 0; |
| 231 | format.which = V4L2_SUBDEV_FORMAT_ACTIVE; |
| 232 | ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &format); |
| 233 | |
| 234 | if (ret < 0) |
| 235 | return 0; |
| 236 | |
| 237 | format.pad = CAMIF_SD_PAD_SINK; |
| 238 | v4l2_subdev_call(&camif->subdev, pad, set_fmt, NULL, &format); |
| 239 | |
| 240 | v4l2_info(sd, "Initial format from sensor: %dx%d, %#x\n", |
| 241 | format.format.width, format.format.height, |
| 242 | format.format.code); |
| 243 | return 0; |
| 244 | } |
| 245 | |
| 246 | static void camif_unregister_sensor(struct camif_dev *camif) |
| 247 | { |
| 248 | struct v4l2_subdev *sd = camif->sensor.sd; |
| 249 | struct i2c_client *client = sd ? v4l2_get_subdevdata(sd) : NULL; |
| 250 | struct i2c_adapter *adapter; |
| 251 | |
| 252 | if (client == NULL) |
| 253 | return; |
| 254 | |
| 255 | adapter = client->adapter; |
| 256 | v4l2_device_unregister_subdev(sd); |
| 257 | camif->sensor.sd = NULL; |
| 258 | i2c_unregister_device(client); |
| 259 | if (adapter) |
| 260 | i2c_put_adapter(adapter); |
| 261 | } |
| 262 | |
| 263 | static int camif_create_media_links(struct camif_dev *camif) |
| 264 | { |
| 265 | int i, ret; |
| 266 | |
| 267 | ret = media_entity_create_link(&camif->sensor.sd->entity, 0, |
| 268 | &camif->subdev.entity, CAMIF_SD_PAD_SINK, |
| 269 | MEDIA_LNK_FL_IMMUTABLE | |
| 270 | MEDIA_LNK_FL_ENABLED); |
| 271 | if (ret) |
| 272 | return ret; |
| 273 | |
| 274 | for (i = 1; i < CAMIF_SD_PADS_NUM && !ret; i++) { |
| 275 | ret = media_entity_create_link(&camif->subdev.entity, i, |
| 276 | &camif->vp[i - 1].vdev.entity, 0, |
| 277 | MEDIA_LNK_FL_IMMUTABLE | |
| 278 | MEDIA_LNK_FL_ENABLED); |
| 279 | } |
| 280 | |
| 281 | return ret; |
| 282 | } |
| 283 | |
| 284 | static int camif_register_video_nodes(struct camif_dev *camif) |
| 285 | { |
| 286 | int ret = s3c_camif_register_video_node(camif, VP_CODEC); |
| 287 | if (ret < 0) |
| 288 | return ret; |
| 289 | |
| 290 | return s3c_camif_register_video_node(camif, VP_PREVIEW); |
| 291 | } |
| 292 | |
| 293 | static void camif_unregister_video_nodes(struct camif_dev *camif) |
| 294 | { |
| 295 | s3c_camif_unregister_video_node(camif, VP_CODEC); |
| 296 | s3c_camif_unregister_video_node(camif, VP_PREVIEW); |
| 297 | } |
| 298 | |
| 299 | static void camif_unregister_media_entities(struct camif_dev *camif) |
| 300 | { |
| 301 | camif_unregister_video_nodes(camif); |
| 302 | camif_unregister_sensor(camif); |
| 303 | s3c_camif_unregister_subdev(camif); |
| 304 | } |
| 305 | |
| 306 | /* |
| 307 | * Media device |
| 308 | */ |
| 309 | static int camif_media_dev_register(struct camif_dev *camif) |
| 310 | { |
| 311 | struct media_device *md = &camif->media_dev; |
| 312 | struct v4l2_device *v4l2_dev = &camif->v4l2_dev; |
| 313 | unsigned int ip_rev = camif->variant->ip_revision; |
| 314 | int ret; |
| 315 | |
| 316 | memset(md, 0, sizeof(*md)); |
| 317 | snprintf(md->model, sizeof(md->model), "SAMSUNG S3C%s CAMIF", |
| 318 | ip_rev == S3C6410_CAMIF_IP_REV ? "6410" : "244X"); |
| 319 | strlcpy(md->bus_info, "platform", sizeof(md->bus_info)); |
| 320 | md->hw_revision = ip_rev; |
| 321 | md->driver_version = KERNEL_VERSION(1, 0, 0); |
| 322 | |
| 323 | md->dev = camif->dev; |
| 324 | |
| 325 | strlcpy(v4l2_dev->name, "s3c-camif", sizeof(v4l2_dev->name)); |
| 326 | v4l2_dev->mdev = md; |
| 327 | |
| 328 | ret = v4l2_device_register(camif->dev, v4l2_dev); |
| 329 | if (ret < 0) |
| 330 | return ret; |
| 331 | |
| 332 | ret = media_device_register(md); |
| 333 | if (ret < 0) |
| 334 | v4l2_device_unregister(v4l2_dev); |
| 335 | |
| 336 | return ret; |
| 337 | } |
| 338 | |
| 339 | static void camif_clk_put(struct camif_dev *camif) |
| 340 | { |
| 341 | int i; |
| 342 | |
| 343 | for (i = 0; i < CLK_MAX_NUM; i++) { |
Sachin Kamat | d46a5a6 | 2013-04-30 02:16:18 -0300 | [diff] [blame] | 344 | if (IS_ERR(camif->clock[i])) |
Sylwester Nawrocki | babde1c | 2012-08-22 20:09:18 -0300 | [diff] [blame] | 345 | continue; |
| 346 | clk_unprepare(camif->clock[i]); |
| 347 | clk_put(camif->clock[i]); |
Sachin Kamat | d46a5a6 | 2013-04-30 02:16:18 -0300 | [diff] [blame] | 348 | camif->clock[i] = ERR_PTR(-EINVAL); |
Sylwester Nawrocki | babde1c | 2012-08-22 20:09:18 -0300 | [diff] [blame] | 349 | } |
| 350 | } |
| 351 | |
| 352 | static int camif_clk_get(struct camif_dev *camif) |
| 353 | { |
| 354 | int ret, i; |
| 355 | |
Sachin Kamat | d46a5a6 | 2013-04-30 02:16:18 -0300 | [diff] [blame] | 356 | for (i = 1; i < CLK_MAX_NUM; i++) |
| 357 | camif->clock[i] = ERR_PTR(-EINVAL); |
| 358 | |
Sylwester Nawrocki | babde1c | 2012-08-22 20:09:18 -0300 | [diff] [blame] | 359 | for (i = 0; i < CLK_MAX_NUM; i++) { |
| 360 | camif->clock[i] = clk_get(camif->dev, camif_clocks[i]); |
| 361 | if (IS_ERR(camif->clock[i])) { |
| 362 | ret = PTR_ERR(camif->clock[i]); |
| 363 | goto err; |
| 364 | } |
| 365 | ret = clk_prepare(camif->clock[i]); |
| 366 | if (ret < 0) { |
| 367 | clk_put(camif->clock[i]); |
| 368 | camif->clock[i] = NULL; |
| 369 | goto err; |
| 370 | } |
| 371 | } |
| 372 | return 0; |
| 373 | err: |
| 374 | camif_clk_put(camif); |
| 375 | dev_err(camif->dev, "failed to get clock: %s\n", |
| 376 | camif_clocks[i]); |
| 377 | return ret; |
| 378 | } |
| 379 | |
| 380 | /* |
| 381 | * The CAMIF device has two relatively independent data processing paths |
| 382 | * that can source data from memory or the common camera input frontend. |
| 383 | * Register interrupts for each data processing path (camif_vp). |
| 384 | */ |
| 385 | static int camif_request_irqs(struct platform_device *pdev, |
| 386 | struct camif_dev *camif) |
| 387 | { |
| 388 | int irq, ret, i; |
| 389 | |
| 390 | for (i = 0; i < CAMIF_VP_NUM; i++) { |
| 391 | struct camif_vp *vp = &camif->vp[i]; |
| 392 | |
| 393 | init_waitqueue_head(&vp->irq_queue); |
| 394 | |
| 395 | irq = platform_get_irq(pdev, i); |
| 396 | if (irq <= 0) { |
| 397 | dev_err(&pdev->dev, "failed to get IRQ %d\n", i); |
| 398 | return -ENXIO; |
| 399 | } |
| 400 | |
| 401 | ret = devm_request_irq(&pdev->dev, irq, s3c_camif_irq_handler, |
| 402 | 0, dev_name(&pdev->dev), vp); |
| 403 | if (ret < 0) { |
| 404 | dev_err(&pdev->dev, "failed to install IRQ: %d\n", ret); |
| 405 | break; |
| 406 | } |
| 407 | } |
| 408 | |
| 409 | return ret; |
| 410 | } |
| 411 | |
| 412 | static int s3c_camif_probe(struct platform_device *pdev) |
| 413 | { |
| 414 | struct device *dev = &pdev->dev; |
| 415 | struct s3c_camif_plat_data *pdata = dev->platform_data; |
| 416 | struct s3c_camif_drvdata *drvdata; |
| 417 | struct camif_dev *camif; |
| 418 | struct resource *mres; |
| 419 | int ret = 0; |
| 420 | |
| 421 | camif = devm_kzalloc(dev, sizeof(*camif), GFP_KERNEL); |
| 422 | if (!camif) |
| 423 | return -ENOMEM; |
| 424 | |
| 425 | spin_lock_init(&camif->slock); |
| 426 | mutex_init(&camif->lock); |
| 427 | |
| 428 | camif->dev = dev; |
| 429 | |
| 430 | if (!pdata || !pdata->gpio_get || !pdata->gpio_put) { |
| 431 | dev_err(dev, "wrong platform data\n"); |
| 432 | return -EINVAL; |
| 433 | } |
| 434 | |
| 435 | camif->pdata = *pdata; |
| 436 | drvdata = (void *)platform_get_device_id(pdev)->driver_data; |
| 437 | camif->variant = drvdata->variant; |
| 438 | |
| 439 | mres = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 440 | |
Thierry Reding | f23999e | 2013-01-21 06:09:07 -0300 | [diff] [blame] | 441 | camif->io_base = devm_ioremap_resource(dev, mres); |
| 442 | if (IS_ERR(camif->io_base)) |
| 443 | return PTR_ERR(camif->io_base); |
Sylwester Nawrocki | babde1c | 2012-08-22 20:09:18 -0300 | [diff] [blame] | 444 | |
| 445 | ret = camif_request_irqs(pdev, camif); |
| 446 | if (ret < 0) |
| 447 | return ret; |
| 448 | |
| 449 | ret = pdata->gpio_get(); |
| 450 | if (ret < 0) |
| 451 | return ret; |
| 452 | |
| 453 | ret = s3c_camif_create_subdev(camif); |
| 454 | if (ret < 0) |
| 455 | goto err_sd; |
| 456 | |
| 457 | ret = camif_clk_get(camif); |
| 458 | if (ret < 0) |
| 459 | goto err_clk; |
| 460 | |
| 461 | platform_set_drvdata(pdev, camif); |
| 462 | clk_set_rate(camif->clock[CLK_CAM], |
| 463 | camif->pdata.sensor.clock_frequency); |
| 464 | |
| 465 | dev_info(dev, "sensor clock frequency: %lu\n", |
| 466 | clk_get_rate(camif->clock[CLK_CAM])); |
| 467 | /* |
| 468 | * Set initial pixel format, resolution and crop rectangle. |
| 469 | * Must be done before a sensor subdev is registered as some |
| 470 | * settings are overrode with values from sensor subdev. |
| 471 | */ |
| 472 | s3c_camif_set_defaults(camif); |
| 473 | |
| 474 | pm_runtime_enable(dev); |
| 475 | |
| 476 | ret = pm_runtime_get_sync(dev); |
| 477 | if (ret < 0) |
| 478 | goto err_pm; |
| 479 | |
| 480 | /* Initialize contiguous memory allocator */ |
| 481 | camif->alloc_ctx = vb2_dma_contig_init_ctx(dev); |
| 482 | if (IS_ERR(camif->alloc_ctx)) { |
| 483 | ret = PTR_ERR(camif->alloc_ctx); |
| 484 | goto err_alloc; |
| 485 | } |
| 486 | |
| 487 | ret = camif_media_dev_register(camif); |
| 488 | if (ret < 0) |
| 489 | goto err_mdev; |
| 490 | |
| 491 | ret = camif_register_sensor(camif); |
| 492 | if (ret < 0) |
| 493 | goto err_sens; |
| 494 | |
| 495 | ret = v4l2_device_register_subdev(&camif->v4l2_dev, &camif->subdev); |
| 496 | if (ret < 0) |
| 497 | goto err_sens; |
| 498 | |
| 499 | mutex_lock(&camif->media_dev.graph_mutex); |
| 500 | |
| 501 | ret = v4l2_device_register_subdev_nodes(&camif->v4l2_dev); |
| 502 | if (ret < 0) |
| 503 | goto err_unlock; |
| 504 | |
| 505 | ret = camif_register_video_nodes(camif); |
| 506 | if (ret < 0) |
| 507 | goto err_unlock; |
| 508 | |
| 509 | ret = camif_create_media_links(camif); |
| 510 | if (ret < 0) |
| 511 | goto err_unlock; |
| 512 | |
| 513 | mutex_unlock(&camif->media_dev.graph_mutex); |
| 514 | pm_runtime_put(dev); |
| 515 | return 0; |
| 516 | |
| 517 | err_unlock: |
| 518 | mutex_unlock(&camif->media_dev.graph_mutex); |
| 519 | err_sens: |
| 520 | v4l2_device_unregister(&camif->v4l2_dev); |
| 521 | media_device_unregister(&camif->media_dev); |
| 522 | camif_unregister_media_entities(camif); |
| 523 | err_mdev: |
| 524 | vb2_dma_contig_cleanup_ctx(camif->alloc_ctx); |
| 525 | err_alloc: |
| 526 | pm_runtime_put(dev); |
| 527 | pm_runtime_disable(dev); |
| 528 | err_pm: |
| 529 | camif_clk_put(camif); |
| 530 | err_clk: |
| 531 | s3c_camif_unregister_subdev(camif); |
| 532 | err_sd: |
| 533 | pdata->gpio_put(); |
| 534 | return ret; |
| 535 | } |
| 536 | |
Greg Kroah-Hartman | 4c62e97 | 2012-12-21 13:17:53 -0800 | [diff] [blame] | 537 | static int s3c_camif_remove(struct platform_device *pdev) |
Sylwester Nawrocki | babde1c | 2012-08-22 20:09:18 -0300 | [diff] [blame] | 538 | { |
| 539 | struct camif_dev *camif = platform_get_drvdata(pdev); |
| 540 | struct s3c_camif_plat_data *pdata = &camif->pdata; |
| 541 | |
| 542 | media_device_unregister(&camif->media_dev); |
| 543 | camif_unregister_media_entities(camif); |
| 544 | v4l2_device_unregister(&camif->v4l2_dev); |
| 545 | |
| 546 | pm_runtime_disable(&pdev->dev); |
| 547 | camif_clk_put(camif); |
| 548 | pdata->gpio_put(); |
| 549 | |
| 550 | return 0; |
| 551 | } |
| 552 | |
| 553 | static int s3c_camif_runtime_resume(struct device *dev) |
| 554 | { |
| 555 | struct camif_dev *camif = dev_get_drvdata(dev); |
| 556 | |
| 557 | clk_enable(camif->clock[CLK_GATE]); |
| 558 | /* null op on s3c244x */ |
| 559 | clk_enable(camif->clock[CLK_CAM]); |
| 560 | return 0; |
| 561 | } |
| 562 | |
| 563 | static int s3c_camif_runtime_suspend(struct device *dev) |
| 564 | { |
| 565 | struct camif_dev *camif = dev_get_drvdata(dev); |
| 566 | |
| 567 | /* null op on s3c244x */ |
| 568 | clk_disable(camif->clock[CLK_CAM]); |
| 569 | |
| 570 | clk_disable(camif->clock[CLK_GATE]); |
| 571 | return 0; |
| 572 | } |
| 573 | |
| 574 | static const struct s3c_camif_variant s3c244x_camif_variant = { |
| 575 | .vp_pix_limits = { |
| 576 | [VP_CODEC] = { |
| 577 | .max_out_width = 4096, |
| 578 | .max_sc_out_width = 2048, |
| 579 | .out_width_align = 16, |
| 580 | .min_out_width = 16, |
| 581 | .max_height = 4096, |
| 582 | }, |
| 583 | [VP_PREVIEW] = { |
| 584 | .max_out_width = 640, |
| 585 | .max_sc_out_width = 640, |
| 586 | .out_width_align = 16, |
| 587 | .min_out_width = 16, |
| 588 | .max_height = 480, |
| 589 | } |
| 590 | }, |
| 591 | .pix_limits = { |
| 592 | .win_hor_offset_align = 8, |
| 593 | }, |
| 594 | .ip_revision = S3C244X_CAMIF_IP_REV, |
| 595 | }; |
| 596 | |
| 597 | static struct s3c_camif_drvdata s3c244x_camif_drvdata = { |
| 598 | .variant = &s3c244x_camif_variant, |
| 599 | .bus_clk_freq = 24000000UL, |
| 600 | }; |
| 601 | |
| 602 | static const struct s3c_camif_variant s3c6410_camif_variant = { |
| 603 | .vp_pix_limits = { |
| 604 | [VP_CODEC] = { |
| 605 | .max_out_width = 4096, |
| 606 | .max_sc_out_width = 2048, |
| 607 | .out_width_align = 16, |
| 608 | .min_out_width = 16, |
| 609 | .max_height = 4096, |
| 610 | }, |
| 611 | [VP_PREVIEW] = { |
| 612 | .max_out_width = 4096, |
| 613 | .max_sc_out_width = 720, |
| 614 | .out_width_align = 16, |
| 615 | .min_out_width = 16, |
| 616 | .max_height = 4096, |
| 617 | } |
| 618 | }, |
| 619 | .pix_limits = { |
| 620 | .win_hor_offset_align = 8, |
| 621 | }, |
| 622 | .ip_revision = S3C6410_CAMIF_IP_REV, |
| 623 | .has_img_effect = 1, |
| 624 | .vp_offset = 0x20, |
| 625 | }; |
| 626 | |
| 627 | static struct s3c_camif_drvdata s3c6410_camif_drvdata = { |
| 628 | .variant = &s3c6410_camif_variant, |
| 629 | .bus_clk_freq = 133000000UL, |
| 630 | }; |
| 631 | |
| 632 | static struct platform_device_id s3c_camif_driver_ids[] = { |
| 633 | { |
| 634 | .name = "s3c2440-camif", |
| 635 | .driver_data = (unsigned long)&s3c244x_camif_drvdata, |
| 636 | }, { |
| 637 | .name = "s3c6410-camif", |
| 638 | .driver_data = (unsigned long)&s3c6410_camif_drvdata, |
| 639 | }, |
| 640 | { /* sentinel */ }, |
| 641 | }; |
| 642 | MODULE_DEVICE_TABLE(platform, s3c_camif_driver_ids); |
| 643 | |
| 644 | static const struct dev_pm_ops s3c_camif_pm_ops = { |
| 645 | .runtime_suspend = s3c_camif_runtime_suspend, |
| 646 | .runtime_resume = s3c_camif_runtime_resume, |
| 647 | }; |
| 648 | |
| 649 | static struct platform_driver s3c_camif_driver = { |
| 650 | .probe = s3c_camif_probe, |
Greg Kroah-Hartman | 4c62e97 | 2012-12-21 13:17:53 -0800 | [diff] [blame] | 651 | .remove = s3c_camif_remove, |
Sylwester Nawrocki | babde1c | 2012-08-22 20:09:18 -0300 | [diff] [blame] | 652 | .id_table = s3c_camif_driver_ids, |
| 653 | .driver = { |
| 654 | .name = S3C_CAMIF_DRIVER_NAME, |
| 655 | .owner = THIS_MODULE, |
| 656 | .pm = &s3c_camif_pm_ops, |
| 657 | } |
| 658 | }; |
| 659 | |
| 660 | module_platform_driver(s3c_camif_driver); |
| 661 | |
| 662 | MODULE_AUTHOR("Sylwester Nawrocki <sylvester.nawrocki@gmail.com>"); |
| 663 | MODULE_AUTHOR("Tomasz Figa <tomasz.figa@gmail.com>"); |
| 664 | MODULE_DESCRIPTION("S3C24XX/S3C64XX SoC camera interface driver"); |
| 665 | MODULE_LICENSE("GPL"); |