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d3953223 SN |
1 | /* |
2 | * S5P/EXYNOS4 SoC series camera host interface media device driver | |
3 | * | |
4 | * Copyright (C) 2011 Samsung Electronics Co., Ltd. | |
5 | * Contact: Sylwester Nawrocki, <s.nawrocki@samsung.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 | ||
13 | #include <linux/bug.h> | |
14 | #include <linux/device.h> | |
15 | #include <linux/errno.h> | |
16 | #include <linux/i2c.h> | |
17 | #include <linux/kernel.h> | |
18 | #include <linux/list.h> | |
19 | #include <linux/module.h> | |
20 | #include <linux/platform_device.h> | |
21 | #include <linux/pm_runtime.h> | |
22 | #include <linux/types.h> | |
23 | #include <linux/slab.h> | |
131b6c61 | 24 | #include <media/v4l2-ctrls.h> |
d3953223 | 25 | #include <media/media-device.h> |
b9ee31e6 | 26 | #include <media/s5p_fimc.h> |
d3953223 SN |
27 | |
28 | #include "fimc-core.h" | |
0f735f52 | 29 | #include "fimc-lite.h" |
d3953223 SN |
30 | #include "fimc-mdevice.h" |
31 | #include "mipi-csis.h" | |
32 | ||
33 | static int __fimc_md_set_camclk(struct fimc_md *fmd, | |
34 | struct fimc_sensor_info *s_info, | |
35 | bool on); | |
36 | /** | |
37 | * fimc_pipeline_prepare - update pipeline information with subdevice pointers | |
38 | * @fimc: fimc device terminating the pipeline | |
39 | * | |
40 | * Caller holds the graph mutex. | |
41 | */ | |
b9ee31e6 SN |
42 | static void fimc_pipeline_prepare(struct fimc_pipeline *p, |
43 | struct media_entity *me) | |
d3953223 | 44 | { |
0f735f52 | 45 | struct media_pad *pad = &me->pads[0]; |
d3953223 | 46 | struct v4l2_subdev *sd; |
0f735f52 | 47 | int i; |
d3953223 | 48 | |
0f735f52 SN |
49 | for (i = 0; i < IDX_MAX; i++) |
50 | p->subdevs[i] = NULL; | |
d3953223 | 51 | |
0f735f52 SN |
52 | while (1) { |
53 | if (!(pad->flags & MEDIA_PAD_FL_SINK)) | |
54 | break; | |
55 | ||
56 | /* source pad */ | |
57 | pad = media_entity_remote_source(pad); | |
58 | if (pad == NULL || | |
59 | media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV) | |
60 | break; | |
d3953223 | 61 | |
0f735f52 SN |
62 | sd = media_entity_to_v4l2_subdev(pad->entity); |
63 | ||
64 | switch (sd->grp_id) { | |
588c87be SN |
65 | case GRP_ID_FIMC_IS_SENSOR: |
66 | case GRP_ID_SENSOR: | |
0f735f52 SN |
67 | p->subdevs[IDX_SENSOR] = sd; |
68 | break; | |
588c87be | 69 | case GRP_ID_CSIS: |
0f735f52 SN |
70 | p->subdevs[IDX_CSIS] = sd; |
71 | break; | |
588c87be | 72 | case GRP_ID_FLITE: |
4af81310 SN |
73 | p->subdevs[IDX_FLITE] = sd; |
74 | break; | |
588c87be | 75 | case GRP_ID_FIMC: |
0f735f52 SN |
76 | /* No need to control FIMC subdev through subdev ops */ |
77 | break; | |
78 | default: | |
79 | pr_warn("%s: Unknown subdev grp_id: %#x\n", | |
80 | __func__, sd->grp_id); | |
81 | } | |
82 | /* sink pad */ | |
83 | pad = &sd->entity.pads[0]; | |
d3953223 SN |
84 | } |
85 | } | |
86 | ||
87 | /** | |
88 | * __subdev_set_power - change power state of a single subdev | |
89 | * @sd: subdevice to change power state for | |
90 | * @on: 1 to enable power or 0 to disable | |
91 | * | |
92 | * Return result of s_power subdev operation or -ENXIO if sd argument | |
93 | * is NULL. Return 0 if the subdevice does not implement s_power. | |
94 | */ | |
95 | static int __subdev_set_power(struct v4l2_subdev *sd, int on) | |
96 | { | |
97 | int *use_count; | |
98 | int ret; | |
99 | ||
100 | if (sd == NULL) | |
101 | return -ENXIO; | |
102 | ||
103 | use_count = &sd->entity.use_count; | |
104 | if (on && (*use_count)++ > 0) | |
105 | return 0; | |
106 | else if (!on && (*use_count == 0 || --(*use_count) > 0)) | |
107 | return 0; | |
108 | ret = v4l2_subdev_call(sd, core, s_power, on); | |
109 | ||
110 | return ret != -ENOIOCTLCMD ? ret : 0; | |
111 | } | |
112 | ||
113 | /** | |
114 | * fimc_pipeline_s_power - change power state of all pipeline subdevs | |
115 | * @fimc: fimc device terminating the pipeline | |
0f735f52 | 116 | * @state: true to power on, false to power off |
d3953223 | 117 | * |
0f735f52 | 118 | * Needs to be called with the graph mutex held. |
d3953223 | 119 | */ |
b9ee31e6 | 120 | static int fimc_pipeline_s_power(struct fimc_pipeline *p, bool state) |
d3953223 | 121 | { |
0f735f52 SN |
122 | unsigned int i; |
123 | int ret; | |
d3953223 | 124 | |
0f735f52 | 125 | if (p->subdevs[IDX_SENSOR] == NULL) |
d3953223 SN |
126 | return -ENXIO; |
127 | ||
0f735f52 SN |
128 | for (i = 0; i < IDX_MAX; i++) { |
129 | unsigned int idx = state ? (IDX_MAX - 1) - i : i; | |
130 | ||
131 | ret = __subdev_set_power(p->subdevs[idx], state); | |
132 | if (ret < 0 && ret != -ENXIO) | |
d3953223 | 133 | return ret; |
d3953223 SN |
134 | } |
135 | ||
0f735f52 | 136 | return 0; |
d3953223 SN |
137 | } |
138 | ||
139 | /** | |
b9ee31e6 SN |
140 | * __fimc_pipeline_open - update the pipeline information, enable power |
141 | * of all pipeline subdevs and the sensor clock | |
d3953223 SN |
142 | * @me: media entity to start graph walk with |
143 | * @prep: true to acquire sensor (and csis) subdevs | |
144 | * | |
145 | * This function must be called with the graph mutex held. | |
146 | */ | |
b9ee31e6 SN |
147 | static int __fimc_pipeline_open(struct fimc_pipeline *p, |
148 | struct media_entity *me, bool prep) | |
d3953223 SN |
149 | { |
150 | int ret; | |
151 | ||
152 | if (prep) | |
0f735f52 SN |
153 | fimc_pipeline_prepare(p, me); |
154 | ||
155 | if (p->subdevs[IDX_SENSOR] == NULL) | |
d3953223 | 156 | return -EINVAL; |
0f735f52 SN |
157 | |
158 | ret = fimc_md_set_camclk(p->subdevs[IDX_SENSOR], true); | |
d3953223 SN |
159 | if (ret) |
160 | return ret; | |
0f735f52 SN |
161 | |
162 | return fimc_pipeline_s_power(p, 1); | |
d3953223 SN |
163 | } |
164 | ||
b9ee31e6 SN |
165 | static int fimc_pipeline_open(struct fimc_pipeline *p, |
166 | struct media_entity *me, bool prep) | |
d3953223 SN |
167 | { |
168 | int ret; | |
169 | ||
170 | mutex_lock(&me->parent->graph_mutex); | |
b9ee31e6 | 171 | ret = __fimc_pipeline_open(p, me, prep); |
d3953223 SN |
172 | mutex_unlock(&me->parent->graph_mutex); |
173 | ||
174 | return ret; | |
175 | } | |
176 | ||
177 | /** | |
b9ee31e6 | 178 | * __fimc_pipeline_close - disable the sensor clock and pipeline power |
d3953223 SN |
179 | * @fimc: fimc device terminating the pipeline |
180 | * | |
181 | * Disable power of all subdevs in the pipeline and turn off the external | |
182 | * sensor clock. | |
183 | * Called with the graph mutex held. | |
184 | */ | |
b9ee31e6 | 185 | static int __fimc_pipeline_close(struct fimc_pipeline *p) |
d3953223 SN |
186 | { |
187 | int ret = 0; | |
188 | ||
0f735f52 SN |
189 | if (p->subdevs[IDX_SENSOR]) { |
190 | ret = fimc_pipeline_s_power(p, 0); | |
191 | fimc_md_set_camclk(p->subdevs[IDX_SENSOR], false); | |
d3953223 SN |
192 | } |
193 | return ret == -ENXIO ? 0 : ret; | |
194 | } | |
195 | ||
b9ee31e6 | 196 | static int fimc_pipeline_close(struct fimc_pipeline *p) |
d3953223 | 197 | { |
90e614bb | 198 | struct media_entity *me; |
d3953223 SN |
199 | int ret; |
200 | ||
90e614bb SN |
201 | if (!p || !p->subdevs[IDX_SENSOR]) |
202 | return -EINVAL; | |
203 | ||
204 | me = &p->subdevs[IDX_SENSOR]->entity; | |
d3953223 | 205 | mutex_lock(&me->parent->graph_mutex); |
b9ee31e6 | 206 | ret = __fimc_pipeline_close(p); |
d3953223 SN |
207 | mutex_unlock(&me->parent->graph_mutex); |
208 | ||
209 | return ret; | |
210 | } | |
211 | ||
212 | /** | |
213 | * fimc_pipeline_s_stream - invoke s_stream on pipeline subdevs | |
0f735f52 | 214 | * @pipeline: video pipeline structure |
d3953223 SN |
215 | * @on: passed as the s_stream call argument |
216 | */ | |
57fcfb6f | 217 | static int fimc_pipeline_s_stream(struct fimc_pipeline *p, bool on) |
d3953223 | 218 | { |
0f735f52 | 219 | int i, ret; |
d3953223 | 220 | |
0f735f52 | 221 | if (p->subdevs[IDX_SENSOR] == NULL) |
d3953223 SN |
222 | return -ENODEV; |
223 | ||
0f735f52 SN |
224 | for (i = 0; i < IDX_MAX; i++) { |
225 | unsigned int idx = on ? (IDX_MAX - 1) - i : i; | |
226 | ||
227 | ret = v4l2_subdev_call(p->subdevs[idx], video, s_stream, on); | |
228 | ||
229 | if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV) | |
230 | return ret; | |
231 | } | |
232 | ||
233 | return 0; | |
234 | ||
d3953223 | 235 | } |
b9ee31e6 SN |
236 | |
237 | /* Media pipeline operations for the FIMC/FIMC-LITE video device driver */ | |
238 | static const struct fimc_pipeline_ops fimc_pipeline_ops = { | |
239 | .open = fimc_pipeline_open, | |
240 | .close = fimc_pipeline_close, | |
241 | .set_stream = fimc_pipeline_s_stream, | |
242 | }; | |
d3953223 SN |
243 | |
244 | /* | |
245 | * Sensor subdevice helper functions | |
246 | */ | |
247 | static struct v4l2_subdev *fimc_md_register_sensor(struct fimc_md *fmd, | |
248 | struct fimc_sensor_info *s_info) | |
249 | { | |
250 | struct i2c_adapter *adapter; | |
251 | struct v4l2_subdev *sd = NULL; | |
252 | ||
253 | if (!s_info || !fmd) | |
254 | return NULL; | |
255 | ||
6612a082 | 256 | adapter = i2c_get_adapter(s_info->pdata.i2c_bus_num); |
ecd9acbf SN |
257 | if (!adapter) { |
258 | v4l2_warn(&fmd->v4l2_dev, | |
259 | "Failed to get I2C adapter %d, deferring probe\n", | |
6612a082 | 260 | s_info->pdata.i2c_bus_num); |
ecd9acbf SN |
261 | return ERR_PTR(-EPROBE_DEFER); |
262 | } | |
d3953223 | 263 | sd = v4l2_i2c_new_subdev_board(&fmd->v4l2_dev, adapter, |
6612a082 | 264 | s_info->pdata.board_info, NULL); |
d3953223 | 265 | if (IS_ERR_OR_NULL(sd)) { |
7acde02a | 266 | i2c_put_adapter(adapter); |
ecd9acbf SN |
267 | v4l2_warn(&fmd->v4l2_dev, |
268 | "Failed to acquire subdev %s, deferring probe\n", | |
6612a082 | 269 | s_info->pdata.board_info->type); |
ecd9acbf | 270 | return ERR_PTR(-EPROBE_DEFER); |
d3953223 SN |
271 | } |
272 | v4l2_set_subdev_hostdata(sd, s_info); | |
588c87be | 273 | sd->grp_id = GRP_ID_SENSOR; |
d3953223 SN |
274 | |
275 | v4l2_info(&fmd->v4l2_dev, "Registered sensor subdevice %s\n", | |
6612a082 | 276 | s_info->pdata.board_info->type); |
d3953223 SN |
277 | return sd; |
278 | } | |
279 | ||
280 | static void fimc_md_unregister_sensor(struct v4l2_subdev *sd) | |
281 | { | |
282 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
7acde02a | 283 | struct i2c_adapter *adapter; |
d3953223 SN |
284 | |
285 | if (!client) | |
286 | return; | |
287 | v4l2_device_unregister_subdev(sd); | |
7acde02a | 288 | adapter = client->adapter; |
d3953223 | 289 | i2c_unregister_device(client); |
7acde02a SN |
290 | if (adapter) |
291 | i2c_put_adapter(adapter); | |
d3953223 SN |
292 | } |
293 | ||
294 | static int fimc_md_register_sensor_entities(struct fimc_md *fmd) | |
295 | { | |
296 | struct s5p_platform_fimc *pdata = fmd->pdev->dev.platform_data; | |
297 | struct fimc_dev *fd = NULL; | |
298 | int num_clients, ret, i; | |
299 | ||
300 | /* | |
301 | * Runtime resume one of the FIMC entities to make sure | |
302 | * the sclk_cam clocks are not globally disabled. | |
303 | */ | |
304 | for (i = 0; !fd && i < ARRAY_SIZE(fmd->fimc); i++) | |
305 | if (fmd->fimc[i]) | |
306 | fd = fmd->fimc[i]; | |
307 | if (!fd) | |
308 | return -ENXIO; | |
309 | ret = pm_runtime_get_sync(&fd->pdev->dev); | |
310 | if (ret < 0) | |
311 | return ret; | |
312 | ||
313 | WARN_ON(pdata->num_clients > ARRAY_SIZE(fmd->sensor)); | |
314 | num_clients = min_t(u32, pdata->num_clients, ARRAY_SIZE(fmd->sensor)); | |
315 | ||
316 | fmd->num_sensors = num_clients; | |
317 | for (i = 0; i < num_clients; i++) { | |
ecd9acbf SN |
318 | struct v4l2_subdev *sd; |
319 | ||
6612a082 | 320 | fmd->sensor[i].pdata = pdata->isp_info[i]; |
d3953223 SN |
321 | ret = __fimc_md_set_camclk(fmd, &fmd->sensor[i], true); |
322 | if (ret) | |
323 | break; | |
ecd9acbf | 324 | sd = fimc_md_register_sensor(fmd, &fmd->sensor[i]); |
d3953223 | 325 | ret = __fimc_md_set_camclk(fmd, &fmd->sensor[i], false); |
ecd9acbf SN |
326 | |
327 | if (!IS_ERR(sd)) { | |
328 | fmd->sensor[i].subdev = sd; | |
329 | } else { | |
330 | fmd->sensor[i].subdev = NULL; | |
331 | ret = PTR_ERR(sd); | |
332 | break; | |
333 | } | |
d3953223 SN |
334 | if (ret) |
335 | break; | |
336 | } | |
337 | pm_runtime_put(&fd->pdev->dev); | |
338 | return ret; | |
339 | } | |
340 | ||
341 | /* | |
342 | * MIPI CSIS and FIMC platform devices registration. | |
343 | */ | |
344 | static int fimc_register_callback(struct device *dev, void *p) | |
345 | { | |
346 | struct fimc_dev *fimc = dev_get_drvdata(dev); | |
8163ec0b | 347 | struct v4l2_subdev *sd; |
d3953223 | 348 | struct fimc_md *fmd = p; |
afd7348c | 349 | int ret; |
4af81310 | 350 | |
afd7348c | 351 | if (fimc == NULL || fimc->id >= FIMC_MAX_DEVS) |
d3953223 SN |
352 | return 0; |
353 | ||
8163ec0b | 354 | sd = &fimc->vid_cap.subdev; |
588c87be | 355 | sd->grp_id = GRP_ID_FIMC; |
97d66c47 | 356 | v4l2_set_subdev_hostdata(sd, (void *)&fimc_pipeline_ops); |
693f5c40 SN |
357 | |
358 | ret = v4l2_device_register_subdev(&fmd->v4l2_dev, sd); | |
359 | if (ret) { | |
360 | v4l2_err(&fmd->v4l2_dev, "Failed to register FIMC.%d (%d)\n", | |
361 | fimc->id, ret); | |
afd7348c | 362 | return ret; |
693f5c40 SN |
363 | } |
364 | ||
afd7348c SN |
365 | fmd->fimc[fimc->id] = fimc; |
366 | return 0; | |
d3953223 SN |
367 | } |
368 | ||
4af81310 SN |
369 | static int fimc_lite_register_callback(struct device *dev, void *p) |
370 | { | |
371 | struct fimc_lite *fimc = dev_get_drvdata(dev); | |
4af81310 SN |
372 | struct fimc_md *fmd = p; |
373 | int ret; | |
374 | ||
afd7348c | 375 | if (fimc == NULL || fimc->index >= FIMC_LITE_MAX_DEVS) |
4af81310 SN |
376 | return 0; |
377 | ||
588c87be | 378 | fimc->subdev.grp_id = GRP_ID_FLITE; |
97d66c47 | 379 | v4l2_set_subdev_hostdata(&fimc->subdev, (void *)&fimc_pipeline_ops); |
4af81310 | 380 | |
8163ec0b | 381 | ret = v4l2_device_register_subdev(&fmd->v4l2_dev, &fimc->subdev); |
4af81310 SN |
382 | if (ret) { |
383 | v4l2_err(&fmd->v4l2_dev, | |
384 | "Failed to register FIMC-LITE.%d (%d)\n", | |
385 | fimc->index, ret); | |
afd7348c | 386 | return ret; |
4af81310 | 387 | } |
afd7348c | 388 | |
afd7348c SN |
389 | fmd->fimc_lite[fimc->index] = fimc; |
390 | return 0; | |
4af81310 SN |
391 | } |
392 | ||
d3953223 SN |
393 | static int csis_register_callback(struct device *dev, void *p) |
394 | { | |
395 | struct v4l2_subdev *sd = dev_get_drvdata(dev); | |
396 | struct platform_device *pdev; | |
397 | struct fimc_md *fmd = p; | |
398 | int id, ret; | |
399 | ||
400 | if (!sd) | |
401 | return 0; | |
402 | pdev = v4l2_get_subdevdata(sd); | |
403 | if (!pdev || pdev->id < 0 || pdev->id >= CSIS_MAX_ENTITIES) | |
404 | return 0; | |
405 | v4l2_info(sd, "csis%d sd: %s\n", pdev->id, sd->name); | |
406 | ||
407 | id = pdev->id < 0 ? 0 : pdev->id; | |
588c87be | 408 | sd->grp_id = GRP_ID_CSIS; |
afd7348c | 409 | |
d3953223 | 410 | ret = v4l2_device_register_subdev(&fmd->v4l2_dev, sd); |
afd7348c SN |
411 | if (!ret) |
412 | fmd->csis[id].sd = sd; | |
413 | else | |
d3953223 SN |
414 | v4l2_err(&fmd->v4l2_dev, |
415 | "Failed to register CSIS subdevice: %d\n", ret); | |
416 | return ret; | |
417 | } | |
418 | ||
419 | /** | |
420 | * fimc_md_register_platform_entities - register FIMC and CSIS media entities | |
421 | */ | |
422 | static int fimc_md_register_platform_entities(struct fimc_md *fmd) | |
423 | { | |
ecd9acbf | 424 | struct s5p_platform_fimc *pdata = fmd->pdev->dev.platform_data; |
d3953223 | 425 | struct device_driver *driver; |
ecd9acbf | 426 | int ret, i; |
d3953223 SN |
427 | |
428 | driver = driver_find(FIMC_MODULE_NAME, &platform_bus_type); | |
ecd9acbf SN |
429 | if (!driver) { |
430 | v4l2_warn(&fmd->v4l2_dev, | |
431 | "%s driver not found, deffering probe\n", | |
432 | FIMC_MODULE_NAME); | |
433 | return -EPROBE_DEFER; | |
434 | } | |
435 | ||
d3953223 SN |
436 | ret = driver_for_each_device(driver, NULL, fmd, |
437 | fimc_register_callback); | |
d3953223 SN |
438 | if (ret) |
439 | return ret; | |
4af81310 SN |
440 | |
441 | driver = driver_find(FIMC_LITE_DRV_NAME, &platform_bus_type); | |
442 | if (driver && try_module_get(driver->owner)) { | |
443 | ret = driver_for_each_device(driver, NULL, fmd, | |
444 | fimc_lite_register_callback); | |
445 | if (ret) | |
446 | return ret; | |
447 | module_put(driver->owner); | |
448 | } | |
ecd9acbf SN |
449 | /* |
450 | * Check if there is any sensor on the MIPI-CSI2 bus and | |
451 | * if not skip the s5p-csis module loading. | |
452 | */ | |
41df5bf0 SN |
453 | if (pdata == NULL) |
454 | return 0; | |
ecd9acbf SN |
455 | for (i = 0; i < pdata->num_clients; i++) { |
456 | if (pdata->isp_info[i].bus_type == FIMC_MIPI_CSI2) { | |
457 | ret = 1; | |
458 | break; | |
459 | } | |
460 | } | |
461 | if (!ret) | |
462 | return 0; | |
d3953223 SN |
463 | |
464 | driver = driver_find(CSIS_DRIVER_NAME, &platform_bus_type); | |
ecd9acbf SN |
465 | if (!driver || !try_module_get(driver->owner)) { |
466 | v4l2_warn(&fmd->v4l2_dev, | |
467 | "%s driver not found, deffering probe\n", | |
468 | CSIS_DRIVER_NAME); | |
469 | return -EPROBE_DEFER; | |
470 | } | |
471 | ||
472 | return driver_for_each_device(driver, NULL, fmd, | |
473 | csis_register_callback); | |
d3953223 SN |
474 | } |
475 | ||
476 | static void fimc_md_unregister_entities(struct fimc_md *fmd) | |
477 | { | |
478 | int i; | |
479 | ||
480 | for (i = 0; i < FIMC_MAX_DEVS; i++) { | |
481 | if (fmd->fimc[i] == NULL) | |
482 | continue; | |
693f5c40 | 483 | v4l2_device_unregister_subdev(&fmd->fimc[i]->vid_cap.subdev); |
b9ee31e6 | 484 | fmd->fimc[i]->pipeline_ops = NULL; |
d3953223 SN |
485 | fmd->fimc[i] = NULL; |
486 | } | |
4af81310 SN |
487 | for (i = 0; i < FIMC_LITE_MAX_DEVS; i++) { |
488 | if (fmd->fimc_lite[i] == NULL) | |
489 | continue; | |
490 | v4l2_device_unregister_subdev(&fmd->fimc_lite[i]->subdev); | |
b9ee31e6 | 491 | fmd->fimc[i]->pipeline_ops = NULL; |
4af81310 SN |
492 | fmd->fimc_lite[i] = NULL; |
493 | } | |
d3953223 SN |
494 | for (i = 0; i < CSIS_MAX_ENTITIES; i++) { |
495 | if (fmd->csis[i].sd == NULL) | |
496 | continue; | |
497 | v4l2_device_unregister_subdev(fmd->csis[i].sd); | |
ecd9acbf | 498 | module_put(fmd->csis[i].sd->owner); |
d3953223 SN |
499 | fmd->csis[i].sd = NULL; |
500 | } | |
501 | for (i = 0; i < fmd->num_sensors; i++) { | |
502 | if (fmd->sensor[i].subdev == NULL) | |
503 | continue; | |
504 | fimc_md_unregister_sensor(fmd->sensor[i].subdev); | |
505 | fmd->sensor[i].subdev = NULL; | |
506 | } | |
507 | } | |
508 | ||
d3953223 SN |
509 | /** |
510 | * __fimc_md_create_fimc_links - create links to all FIMC entities | |
511 | * @fmd: fimc media device | |
512 | * @source: the source entity to create links to all fimc entities from | |
513 | * @sensor: sensor subdev linked to FIMC[fimc_id] entity, may be null | |
514 | * @pad: the source entity pad index | |
d0da3c35 | 515 | * @link_mask: bitmask of the fimc devices for which link should be enabled |
d3953223 | 516 | */ |
4af81310 SN |
517 | static int __fimc_md_create_fimc_sink_links(struct fimc_md *fmd, |
518 | struct media_entity *source, | |
519 | struct v4l2_subdev *sensor, | |
d0da3c35 | 520 | int pad, int link_mask) |
d3953223 SN |
521 | { |
522 | struct fimc_sensor_info *s_info; | |
523 | struct media_entity *sink; | |
4af81310 | 524 | unsigned int flags = 0; |
237e0265 | 525 | int ret, i; |
d3953223 SN |
526 | |
527 | for (i = 0; i < FIMC_MAX_DEVS; i++) { | |
528 | if (!fmd->fimc[i]) | |
4af81310 | 529 | continue; |
d3953223 SN |
530 | /* |
531 | * Some FIMC variants are not fitted with camera capture | |
532 | * interface. Skip creating a link from sensor for those. | |
533 | */ | |
4af81310 | 534 | if (!fmd->fimc[i]->variant->has_cam_if) |
d3953223 SN |
535 | continue; |
536 | ||
d0da3c35 | 537 | flags = ((1 << i) & link_mask) ? MEDIA_LNK_FL_ENABLED : 0; |
4af81310 | 538 | |
693f5c40 | 539 | sink = &fmd->fimc[i]->vid_cap.subdev.entity; |
237e0265 SN |
540 | ret = media_entity_create_link(source, pad, sink, |
541 | FIMC_SD_PAD_SINK, flags); | |
d3953223 SN |
542 | if (ret) |
543 | return ret; | |
544 | ||
237e0265 SN |
545 | /* Notify FIMC capture subdev entity */ |
546 | ret = media_entity_call(sink, link_setup, &sink->pads[0], | |
547 | &source->pads[pad], flags); | |
548 | if (ret) | |
549 | break; | |
550 | ||
542fb082 | 551 | v4l2_info(&fmd->v4l2_dev, "created link [%s] %c> [%s]\n", |
d3953223 SN |
552 | source->name, flags ? '=' : '-', sink->name); |
553 | ||
4af81310 | 554 | if (flags == 0 || sensor == NULL) |
d3953223 SN |
555 | continue; |
556 | s_info = v4l2_get_subdev_hostdata(sensor); | |
557 | if (!WARN_ON(s_info == NULL)) { | |
558 | unsigned long irq_flags; | |
559 | spin_lock_irqsave(&fmd->slock, irq_flags); | |
560 | s_info->host = fmd->fimc[i]; | |
561 | spin_unlock_irqrestore(&fmd->slock, irq_flags); | |
562 | } | |
563 | } | |
4af81310 SN |
564 | |
565 | for (i = 0; i < FIMC_LITE_MAX_DEVS; i++) { | |
566 | if (!fmd->fimc_lite[i]) | |
567 | continue; | |
568 | ||
d0da3c35 SN |
569 | if (link_mask & (1 << (i + FIMC_MAX_DEVS))) |
570 | flags = MEDIA_LNK_FL_ENABLED; | |
571 | else | |
572 | flags = 0; | |
4af81310 SN |
573 | |
574 | sink = &fmd->fimc_lite[i]->subdev.entity; | |
575 | ret = media_entity_create_link(source, pad, sink, | |
576 | FLITE_SD_PAD_SINK, flags); | |
577 | if (ret) | |
578 | return ret; | |
579 | ||
580 | /* Notify FIMC-LITE subdev entity */ | |
581 | ret = media_entity_call(sink, link_setup, &sink->pads[0], | |
582 | &source->pads[pad], flags); | |
583 | if (ret) | |
584 | break; | |
585 | ||
586 | v4l2_info(&fmd->v4l2_dev, "created link [%s] %c> [%s]", | |
587 | source->name, flags ? '=' : '-', sink->name); | |
588 | } | |
d3953223 SN |
589 | return 0; |
590 | } | |
591 | ||
4af81310 SN |
592 | /* Create links from FIMC-LITE source pads to other entities */ |
593 | static int __fimc_md_create_flite_source_links(struct fimc_md *fmd) | |
594 | { | |
595 | struct media_entity *source, *sink; | |
596 | unsigned int flags = MEDIA_LNK_FL_ENABLED; | |
597 | int i, ret; | |
598 | ||
599 | for (i = 0; i < FIMC_LITE_MAX_DEVS; i++) { | |
600 | struct fimc_lite *fimc = fmd->fimc_lite[i]; | |
601 | if (fimc == NULL) | |
602 | continue; | |
603 | source = &fimc->subdev.entity; | |
1bcd7041 | 604 | sink = &fimc->vfd.entity; |
4af81310 | 605 | /* FIMC-LITE's subdev and video node */ |
6319d6a0 | 606 | ret = media_entity_create_link(source, FLITE_SD_PAD_SOURCE_DMA, |
4af81310 SN |
607 | sink, 0, flags); |
608 | if (ret) | |
609 | break; | |
610 | /* TODO: create links to other entities */ | |
611 | } | |
612 | ||
613 | return ret; | |
614 | } | |
615 | ||
d3953223 SN |
616 | /** |
617 | * fimc_md_create_links - create default links between registered entities | |
618 | * | |
619 | * Parallel interface sensor entities are connected directly to FIMC capture | |
620 | * entities. The sensors using MIPI CSIS bus are connected through immutable | |
621 | * link with CSI receiver entity specified by mux_id. Any registered CSIS | |
622 | * entity has a link to each registered FIMC capture entity. Enabled links | |
623 | * are created by default between each subsequent registered sensor and | |
624 | * subsequent FIMC capture entity. The number of default active links is | |
625 | * determined by the number of available sensors or FIMC entities, | |
626 | * whichever is less. | |
627 | */ | |
628 | static int fimc_md_create_links(struct fimc_md *fmd) | |
629 | { | |
a8697ec8 | 630 | struct v4l2_subdev *csi_sensors[CSIS_MAX_ENTITIES] = { NULL }; |
d3953223 SN |
631 | struct v4l2_subdev *sensor, *csis; |
632 | struct s5p_fimc_isp_info *pdata; | |
633 | struct fimc_sensor_info *s_info; | |
237e0265 | 634 | struct media_entity *source, *sink; |
d0da3c35 SN |
635 | int i, pad, fimc_id = 0, ret = 0; |
636 | u32 flags, link_mask = 0; | |
d3953223 SN |
637 | |
638 | for (i = 0; i < fmd->num_sensors; i++) { | |
639 | if (fmd->sensor[i].subdev == NULL) | |
640 | continue; | |
641 | ||
642 | sensor = fmd->sensor[i].subdev; | |
643 | s_info = v4l2_get_subdev_hostdata(sensor); | |
6612a082 | 644 | if (!s_info) |
d3953223 SN |
645 | continue; |
646 | ||
647 | source = NULL; | |
6612a082 | 648 | pdata = &s_info->pdata; |
d3953223 SN |
649 | |
650 | switch (pdata->bus_type) { | |
651 | case FIMC_MIPI_CSI2: | |
652 | if (WARN(pdata->mux_id >= CSIS_MAX_ENTITIES, | |
653 | "Wrong CSI channel id: %d\n", pdata->mux_id)) | |
654 | return -EINVAL; | |
655 | ||
656 | csis = fmd->csis[pdata->mux_id].sd; | |
657 | if (WARN(csis == NULL, | |
658 | "MIPI-CSI interface specified " | |
659 | "but s5p-csis module is not loaded!\n")) | |
d12392ec | 660 | return -EINVAL; |
d3953223 | 661 | |
1c9f5bd7 AH |
662 | pad = sensor->entity.num_pads - 1; |
663 | ret = media_entity_create_link(&sensor->entity, pad, | |
d3953223 SN |
664 | &csis->entity, CSIS_PAD_SINK, |
665 | MEDIA_LNK_FL_IMMUTABLE | | |
666 | MEDIA_LNK_FL_ENABLED); | |
667 | if (ret) | |
668 | return ret; | |
669 | ||
670 | v4l2_info(&fmd->v4l2_dev, "created link [%s] => [%s]", | |
671 | sensor->entity.name, csis->entity.name); | |
672 | ||
4af81310 | 673 | source = NULL; |
5d33ee92 | 674 | csi_sensors[pdata->mux_id] = sensor; |
d3953223 SN |
675 | break; |
676 | ||
677 | case FIMC_ITU_601...FIMC_ITU_656: | |
678 | source = &sensor->entity; | |
679 | pad = 0; | |
680 | break; | |
681 | ||
682 | default: | |
683 | v4l2_err(&fmd->v4l2_dev, "Wrong bus_type: %x\n", | |
684 | pdata->bus_type); | |
685 | return -EINVAL; | |
686 | } | |
687 | if (source == NULL) | |
688 | continue; | |
689 | ||
d0da3c35 | 690 | link_mask = 1 << fimc_id++; |
4af81310 | 691 | ret = __fimc_md_create_fimc_sink_links(fmd, source, sensor, |
d0da3c35 | 692 | pad, link_mask); |
4af81310 SN |
693 | } |
694 | ||
a8697ec8 | 695 | for (i = 0; i < CSIS_MAX_ENTITIES; i++) { |
4af81310 SN |
696 | if (fmd->csis[i].sd == NULL) |
697 | continue; | |
698 | source = &fmd->csis[i].sd->entity; | |
699 | pad = CSIS_PAD_SOURCE; | |
5d33ee92 | 700 | sensor = csi_sensors[i]; |
4af81310 | 701 | |
d0da3c35 | 702 | link_mask = 1 << fimc_id++; |
5d33ee92 | 703 | ret = __fimc_md_create_fimc_sink_links(fmd, source, sensor, |
d0da3c35 | 704 | pad, link_mask); |
d3953223 | 705 | } |
4af81310 | 706 | |
237e0265 SN |
707 | /* Create immutable links between each FIMC's subdev and video node */ |
708 | flags = MEDIA_LNK_FL_IMMUTABLE | MEDIA_LNK_FL_ENABLED; | |
709 | for (i = 0; i < FIMC_MAX_DEVS; i++) { | |
710 | if (!fmd->fimc[i]) | |
711 | continue; | |
693f5c40 | 712 | source = &fmd->fimc[i]->vid_cap.subdev.entity; |
31d34d9b | 713 | sink = &fmd->fimc[i]->vid_cap.vfd.entity; |
237e0265 SN |
714 | ret = media_entity_create_link(source, FIMC_SD_PAD_SOURCE, |
715 | sink, 0, flags); | |
716 | if (ret) | |
717 | break; | |
718 | } | |
719 | ||
4af81310 | 720 | return __fimc_md_create_flite_source_links(fmd); |
d3953223 SN |
721 | } |
722 | ||
723 | /* | |
724 | * The peripheral sensor clock management. | |
725 | */ | |
726 | static int fimc_md_get_clocks(struct fimc_md *fmd) | |
727 | { | |
728 | char clk_name[32]; | |
729 | struct clk *clock; | |
730 | int i; | |
731 | ||
732 | for (i = 0; i < FIMC_MAX_CAMCLKS; i++) { | |
733 | snprintf(clk_name, sizeof(clk_name), "sclk_cam%u", i); | |
734 | clock = clk_get(NULL, clk_name); | |
dc3ae328 | 735 | if (IS_ERR(clock)) { |
d3953223 SN |
736 | v4l2_err(&fmd->v4l2_dev, "Failed to get clock: %s", |
737 | clk_name); | |
738 | return -ENXIO; | |
739 | } | |
740 | fmd->camclk[i].clock = clock; | |
741 | } | |
742 | return 0; | |
743 | } | |
744 | ||
745 | static void fimc_md_put_clocks(struct fimc_md *fmd) | |
746 | { | |
747 | int i = FIMC_MAX_CAMCLKS; | |
748 | ||
749 | while (--i >= 0) { | |
750 | if (IS_ERR_OR_NULL(fmd->camclk[i].clock)) | |
751 | continue; | |
752 | clk_put(fmd->camclk[i].clock); | |
753 | fmd->camclk[i].clock = NULL; | |
754 | } | |
755 | } | |
756 | ||
757 | static int __fimc_md_set_camclk(struct fimc_md *fmd, | |
e3fc82e8 SN |
758 | struct fimc_sensor_info *s_info, |
759 | bool on) | |
d3953223 | 760 | { |
6612a082 | 761 | struct s5p_fimc_isp_info *pdata = &s_info->pdata; |
d3953223 SN |
762 | struct fimc_camclk_info *camclk; |
763 | int ret = 0; | |
764 | ||
765 | if (WARN_ON(pdata->clk_id >= FIMC_MAX_CAMCLKS) || fmd == NULL) | |
766 | return -EINVAL; | |
767 | ||
d3953223 SN |
768 | camclk = &fmd->camclk[pdata->clk_id]; |
769 | ||
e3fc82e8 SN |
770 | dbg("camclk %d, f: %lu, use_count: %d, on: %d", |
771 | pdata->clk_id, pdata->clk_frequency, camclk->use_count, on); | |
d3953223 SN |
772 | |
773 | if (on) { | |
774 | if (camclk->use_count > 0 && | |
775 | camclk->frequency != pdata->clk_frequency) | |
776 | return -EINVAL; | |
777 | ||
778 | if (camclk->use_count++ == 0) { | |
779 | clk_set_rate(camclk->clock, pdata->clk_frequency); | |
780 | camclk->frequency = pdata->clk_frequency; | |
781 | ret = clk_enable(camclk->clock); | |
e3fc82e8 SN |
782 | dbg("Enabled camclk %d: f: %lu", pdata->clk_id, |
783 | clk_get_rate(camclk->clock)); | |
d3953223 | 784 | } |
d3953223 SN |
785 | return ret; |
786 | } | |
787 | ||
788 | if (WARN_ON(camclk->use_count == 0)) | |
789 | return 0; | |
790 | ||
791 | if (--camclk->use_count == 0) { | |
792 | clk_disable(camclk->clock); | |
d3953223 SN |
793 | dbg("Disabled camclk %d", pdata->clk_id); |
794 | } | |
795 | return ret; | |
796 | } | |
797 | ||
798 | /** | |
799 | * fimc_md_set_camclk - peripheral sensor clock setup | |
800 | * @sd: sensor subdev to configure sclk_cam clock for | |
801 | * @on: 1 to enable or 0 to disable the clock | |
802 | * | |
803 | * There are 2 separate clock outputs available in the SoC for external | |
804 | * image processors. These clocks are shared between all registered FIMC | |
805 | * devices to which sensors can be attached, either directly or through | |
806 | * the MIPI CSI receiver. The clock is allowed here to be used by | |
807 | * multiple sensors concurrently if they use same frequency. | |
d3953223 SN |
808 | * This function should only be called when the graph mutex is held. |
809 | */ | |
810 | int fimc_md_set_camclk(struct v4l2_subdev *sd, bool on) | |
811 | { | |
812 | struct fimc_sensor_info *s_info = v4l2_get_subdev_hostdata(sd); | |
813 | struct fimc_md *fmd = entity_to_fimc_mdev(&sd->entity); | |
814 | ||
815 | return __fimc_md_set_camclk(fmd, s_info, on); | |
816 | } | |
817 | ||
818 | static int fimc_md_link_notify(struct media_pad *source, | |
819 | struct media_pad *sink, u32 flags) | |
820 | { | |
4af81310 SN |
821 | struct fimc_lite *fimc_lite = NULL; |
822 | struct fimc_dev *fimc = NULL; | |
0f735f52 | 823 | struct fimc_pipeline *pipeline; |
237e0265 | 824 | struct v4l2_subdev *sd; |
d3953223 SN |
825 | int ret = 0; |
826 | ||
237e0265 | 827 | if (media_entity_type(sink->entity) != MEDIA_ENT_T_V4L2_SUBDEV) |
d3953223 SN |
828 | return 0; |
829 | ||
237e0265 | 830 | sd = media_entity_to_v4l2_subdev(sink->entity); |
d3953223 | 831 | |
0f735f52 | 832 | switch (sd->grp_id) { |
588c87be | 833 | case GRP_ID_FLITE: |
4af81310 SN |
834 | fimc_lite = v4l2_get_subdevdata(sd); |
835 | pipeline = &fimc_lite->pipeline; | |
836 | break; | |
588c87be | 837 | case GRP_ID_FIMC: |
0f735f52 SN |
838 | fimc = v4l2_get_subdevdata(sd); |
839 | pipeline = &fimc->pipeline; | |
840 | break; | |
841 | default: | |
842 | return 0; | |
843 | } | |
131b6c61 | 844 | |
0f735f52 | 845 | if (!(flags & MEDIA_LNK_FL_ENABLED)) { |
b9ee31e6 | 846 | ret = __fimc_pipeline_close(pipeline); |
0f735f52 SN |
847 | pipeline->subdevs[IDX_SENSOR] = NULL; |
848 | pipeline->subdevs[IDX_CSIS] = NULL; | |
849 | ||
850 | if (fimc) { | |
851 | mutex_lock(&fimc->lock); | |
852 | fimc_ctrls_delete(fimc->vid_cap.ctx); | |
853 | mutex_unlock(&fimc->lock); | |
854 | } | |
d3953223 SN |
855 | return ret; |
856 | } | |
857 | /* | |
858 | * Link activation. Enable power of pipeline elements only if the | |
859 | * pipeline is already in use, i.e. its video node is opened. | |
131b6c61 | 860 | * Recreate the controls destroyed during the link deactivation. |
d3953223 | 861 | */ |
4af81310 SN |
862 | if (fimc) { |
863 | mutex_lock(&fimc->lock); | |
864 | if (fimc->vid_cap.refcnt > 0) { | |
b9ee31e6 SN |
865 | ret = __fimc_pipeline_open(pipeline, |
866 | source->entity, true); | |
131b6c61 SN |
867 | if (!ret) |
868 | ret = fimc_capture_ctrls_create(fimc); | |
4af81310 SN |
869 | } |
870 | mutex_unlock(&fimc->lock); | |
871 | } else { | |
872 | mutex_lock(&fimc_lite->lock); | |
873 | if (fimc_lite->ref_count > 0) { | |
b9ee31e6 SN |
874 | ret = __fimc_pipeline_open(pipeline, |
875 | source->entity, true); | |
4af81310 SN |
876 | } |
877 | mutex_unlock(&fimc_lite->lock); | |
131b6c61 | 878 | } |
d3953223 SN |
879 | return ret ? -EPIPE : ret; |
880 | } | |
881 | ||
882 | static ssize_t fimc_md_sysfs_show(struct device *dev, | |
883 | struct device_attribute *attr, char *buf) | |
884 | { | |
885 | struct platform_device *pdev = to_platform_device(dev); | |
886 | struct fimc_md *fmd = platform_get_drvdata(pdev); | |
887 | ||
888 | if (fmd->user_subdev_api) | |
889 | return strlcpy(buf, "Sub-device API (sub-dev)\n", PAGE_SIZE); | |
890 | ||
891 | return strlcpy(buf, "V4L2 video node only API (vid-dev)\n", PAGE_SIZE); | |
892 | } | |
893 | ||
894 | static ssize_t fimc_md_sysfs_store(struct device *dev, | |
895 | struct device_attribute *attr, | |
896 | const char *buf, size_t count) | |
897 | { | |
898 | struct platform_device *pdev = to_platform_device(dev); | |
899 | struct fimc_md *fmd = platform_get_drvdata(pdev); | |
900 | bool subdev_api; | |
901 | int i; | |
902 | ||
903 | if (!strcmp(buf, "vid-dev\n")) | |
904 | subdev_api = false; | |
905 | else if (!strcmp(buf, "sub-dev\n")) | |
906 | subdev_api = true; | |
907 | else | |
908 | return count; | |
909 | ||
910 | fmd->user_subdev_api = subdev_api; | |
911 | for (i = 0; i < FIMC_MAX_DEVS; i++) | |
912 | if (fmd->fimc[i]) | |
913 | fmd->fimc[i]->vid_cap.user_subdev_api = subdev_api; | |
914 | return count; | |
915 | } | |
916 | /* | |
917 | * This device attribute is to select video pipeline configuration method. | |
918 | * There are following valid values: | |
919 | * vid-dev - for V4L2 video node API only, subdevice will be configured | |
920 | * by the host driver. | |
921 | * sub-dev - for media controller API, subdevs must be configured in user | |
922 | * space before starting streaming. | |
923 | */ | |
924 | static DEVICE_ATTR(subdev_conf_mode, S_IWUSR | S_IRUGO, | |
925 | fimc_md_sysfs_show, fimc_md_sysfs_store); | |
926 | ||
ecd9acbf | 927 | static int fimc_md_probe(struct platform_device *pdev) |
d3953223 SN |
928 | { |
929 | struct v4l2_device *v4l2_dev; | |
930 | struct fimc_md *fmd; | |
931 | int ret; | |
932 | ||
6d91a51a | 933 | fmd = devm_kzalloc(&pdev->dev, sizeof(*fmd), GFP_KERNEL); |
d3953223 SN |
934 | if (!fmd) |
935 | return -ENOMEM; | |
936 | ||
937 | spin_lock_init(&fmd->slock); | |
938 | fmd->pdev = pdev; | |
939 | ||
940 | strlcpy(fmd->media_dev.model, "SAMSUNG S5P FIMC", | |
941 | sizeof(fmd->media_dev.model)); | |
942 | fmd->media_dev.link_notify = fimc_md_link_notify; | |
943 | fmd->media_dev.dev = &pdev->dev; | |
944 | ||
945 | v4l2_dev = &fmd->v4l2_dev; | |
946 | v4l2_dev->mdev = &fmd->media_dev; | |
e1d72f4d | 947 | v4l2_dev->notify = fimc_sensor_notify; |
d3953223 SN |
948 | snprintf(v4l2_dev->name, sizeof(v4l2_dev->name), "%s", |
949 | dev_name(&pdev->dev)); | |
950 | ||
951 | ret = v4l2_device_register(&pdev->dev, &fmd->v4l2_dev); | |
952 | if (ret < 0) { | |
953 | v4l2_err(v4l2_dev, "Failed to register v4l2_device: %d\n", ret); | |
6d91a51a | 954 | return ret; |
d3953223 SN |
955 | } |
956 | ret = media_device_register(&fmd->media_dev); | |
957 | if (ret < 0) { | |
958 | v4l2_err(v4l2_dev, "Failed to register media device: %d\n", ret); | |
693f5c40 | 959 | goto err_md; |
d3953223 SN |
960 | } |
961 | ret = fimc_md_get_clocks(fmd); | |
962 | if (ret) | |
693f5c40 | 963 | goto err_clk; |
d3953223 SN |
964 | |
965 | fmd->user_subdev_api = false; | |
693f5c40 SN |
966 | |
967 | /* Protect the media graph while we're registering entities */ | |
968 | mutex_lock(&fmd->media_dev.graph_mutex); | |
969 | ||
d3953223 SN |
970 | ret = fimc_md_register_platform_entities(fmd); |
971 | if (ret) | |
693f5c40 | 972 | goto err_unlock; |
d3953223 | 973 | |
5cbf6f16 SN |
974 | if (pdev->dev.platform_data) { |
975 | ret = fimc_md_register_sensor_entities(fmd); | |
976 | if (ret) | |
693f5c40 | 977 | goto err_unlock; |
5cbf6f16 | 978 | } |
d3953223 SN |
979 | ret = fimc_md_create_links(fmd); |
980 | if (ret) | |
693f5c40 | 981 | goto err_unlock; |
d3953223 SN |
982 | ret = v4l2_device_register_subdev_nodes(&fmd->v4l2_dev); |
983 | if (ret) | |
693f5c40 | 984 | goto err_unlock; |
d3953223 SN |
985 | |
986 | ret = device_create_file(&pdev->dev, &dev_attr_subdev_conf_mode); | |
693f5c40 SN |
987 | if (ret) |
988 | goto err_unlock; | |
989 | ||
990 | platform_set_drvdata(pdev, fmd); | |
991 | mutex_unlock(&fmd->media_dev.graph_mutex); | |
992 | return 0; | |
993 | ||
994 | err_unlock: | |
995 | mutex_unlock(&fmd->media_dev.graph_mutex); | |
996 | err_clk: | |
d3953223 SN |
997 | media_device_unregister(&fmd->media_dev); |
998 | fimc_md_put_clocks(fmd); | |
999 | fimc_md_unregister_entities(fmd); | |
693f5c40 | 1000 | err_md: |
d3953223 | 1001 | v4l2_device_unregister(&fmd->v4l2_dev); |
d3953223 SN |
1002 | return ret; |
1003 | } | |
1004 | ||
1005 | static int __devexit fimc_md_remove(struct platform_device *pdev) | |
1006 | { | |
1007 | struct fimc_md *fmd = platform_get_drvdata(pdev); | |
1008 | ||
1009 | if (!fmd) | |
1010 | return 0; | |
1011 | device_remove_file(&pdev->dev, &dev_attr_subdev_conf_mode); | |
1012 | fimc_md_unregister_entities(fmd); | |
1013 | media_device_unregister(&fmd->media_dev); | |
1014 | fimc_md_put_clocks(fmd); | |
d3953223 SN |
1015 | return 0; |
1016 | } | |
1017 | ||
1018 | static struct platform_driver fimc_md_driver = { | |
1019 | .probe = fimc_md_probe, | |
1020 | .remove = __devexit_p(fimc_md_remove), | |
1021 | .driver = { | |
1022 | .name = "s5p-fimc-md", | |
1023 | .owner = THIS_MODULE, | |
1024 | } | |
1025 | }; | |
1026 | ||
7e566be2 | 1027 | static int __init fimc_md_init(void) |
d3953223 SN |
1028 | { |
1029 | int ret; | |
ecd9acbf | 1030 | |
d3953223 SN |
1031 | request_module("s5p-csis"); |
1032 | ret = fimc_register_driver(); | |
1033 | if (ret) | |
1034 | return ret; | |
ecd9acbf | 1035 | |
d3953223 SN |
1036 | return platform_driver_register(&fimc_md_driver); |
1037 | } | |
7e566be2 SK |
1038 | |
1039 | static void __exit fimc_md_exit(void) | |
d3953223 SN |
1040 | { |
1041 | platform_driver_unregister(&fimc_md_driver); | |
1042 | fimc_unregister_driver(); | |
1043 | } | |
1044 | ||
1045 | module_init(fimc_md_init); | |
1046 | module_exit(fimc_md_exit); | |
1047 | ||
1048 | MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>"); | |
1049 | MODULE_DESCRIPTION("S5P FIMC camera host interface/video postprocessor driver"); | |
1050 | MODULE_LICENSE("GPL"); | |
1051 | MODULE_VERSION("2.0.1"); |