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Sylwester Nawrockid3953222011-09-01 06:01:08 -03001/*
2 * S5P/EXYNOS4 SoC series camera host interface media device driver
3 *
Sylwester Nawrocki52917bc2013-05-31 11:37:24 -03004 * Copyright (C) 2011 - 2013 Samsung Electronics Co., Ltd.
5 * Author: Sylwester Nawrocki <s.nawrocki@samsung.com>
Sylwester Nawrockid3953222011-09-01 06:01:08 -03006 *
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>
Sylwester Nawrockid3f5e0c2013-12-20 18:53:53 -030014#include <linux/clk.h>
15#include <linux/clk-provider.h>
Sylwester Nawrockid3953222011-09-01 06:01:08 -030016#include <linux/device.h>
17#include <linux/errno.h>
18#include <linux/i2c.h>
19#include <linux/kernel.h>
20#include <linux/list.h>
21#include <linux/module.h>
Sylwester Nawrockie2985a22013-03-08 12:59:33 -030022#include <linux/of.h>
23#include <linux/of_platform.h>
24#include <linux/of_device.h>
Philipp Zabelfd9fdb72014-02-10 22:01:48 +010025#include <linux/of_graph.h>
Sylwester Nawrockid3953222011-09-01 06:01:08 -030026#include <linux/platform_device.h>
27#include <linux/pm_runtime.h>
28#include <linux/types.h>
29#include <linux/slab.h>
Sylwester Nawrockifa91f102014-02-24 11:44:50 -030030#include <media/v4l2-async.h>
Sylwester Nawrocki131b6c62011-08-24 19:25:10 -030031#include <media/v4l2-ctrls.h>
Sylwester Nawrockie2985a22013-03-08 12:59:33 -030032#include <media/v4l2-of.h>
Sylwester Nawrockid3953222011-09-01 06:01:08 -030033#include <media/media-device.h>
Mauro Carvalho Chehabd647f0b2015-11-13 19:40:07 -020034#include <media/drv-intf/exynos-fimc.h>
Sylwester Nawrockid3953222011-09-01 06:01:08 -030035
Sylwester Nawrocki56fa1a62013-03-24 16:54:25 +010036#include "media-dev.h"
Sylwester Nawrockid3953222011-09-01 06:01:08 -030037#include "fimc-core.h"
Sylwester Nawrockie781bbe32013-03-21 14:49:16 -030038#include "fimc-is.h"
Sylwester Nawrocki0f735f52012-04-27 09:33:10 -030039#include "fimc-lite.h"
Sylwester Nawrockid3953222011-09-01 06:01:08 -030040#include "mipi-csis.h"
41
Sylwester Nawrocki52917bc2013-05-31 11:37:24 -030042/* Set up image sensor subdev -> FIMC capture node notifications. */
43static void __setup_sensor_notification(struct fimc_md *fmd,
44 struct v4l2_subdev *sensor,
45 struct v4l2_subdev *fimc_sd)
46{
47 struct fimc_source_info *src_inf;
48 struct fimc_sensor_info *md_si;
49 unsigned long flags;
50
51 src_inf = v4l2_get_subdev_hostdata(sensor);
52 if (!src_inf || WARN_ON(fmd == NULL))
53 return;
54
55 md_si = source_to_sensor_info(src_inf);
56 spin_lock_irqsave(&fmd->slock, flags);
57 md_si->host = v4l2_get_subdevdata(fimc_sd);
58 spin_unlock_irqrestore(&fmd->slock, flags);
59}
60
Sylwester Nawrockid3953222011-09-01 06:01:08 -030061/**
62 * fimc_pipeline_prepare - update pipeline information with subdevice pointers
Sylwester Nawrocki39bb6df62013-03-08 08:58:34 -030063 * @me: media entity terminating the pipeline
Sylwester Nawrockid3953222011-09-01 06:01:08 -030064 *
65 * Caller holds the graph mutex.
66 */
Sylwester Nawrockib9ee31e62012-08-14 10:46:58 -030067static void fimc_pipeline_prepare(struct fimc_pipeline *p,
Sylwester Nawrocki403dfbe2013-05-31 11:37:22 -030068 struct media_entity *me)
Sylwester Nawrockid3953222011-09-01 06:01:08 -030069{
Sylwester Nawrocki52917bc2013-05-31 11:37:24 -030070 struct fimc_md *fmd = entity_to_fimc_mdev(me);
Sylwester Nawrockid3953222011-09-01 06:01:08 -030071 struct v4l2_subdev *sd;
Sylwester Nawrocki52917bc2013-05-31 11:37:24 -030072 struct v4l2_subdev *sensor = NULL;
Sylwester Nawrocki0f735f52012-04-27 09:33:10 -030073 int i;
Sylwester Nawrockid3953222011-09-01 06:01:08 -030074
Sylwester Nawrocki0f735f52012-04-27 09:33:10 -030075 for (i = 0; i < IDX_MAX; i++)
76 p->subdevs[i] = NULL;
Sylwester Nawrockid3953222011-09-01 06:01:08 -030077
Sylwester Nawrocki0f735f52012-04-27 09:33:10 -030078 while (1) {
Sylwester Nawrocki39bb6df62013-03-08 08:58:34 -030079 struct media_pad *pad = NULL;
Sylwester Nawrockid3953222011-09-01 06:01:08 -030080
Sylwester Nawrocki39bb6df62013-03-08 08:58:34 -030081 /* Find remote source pad */
82 for (i = 0; i < me->num_pads; i++) {
83 struct media_pad *spad = &me->pads[i];
84 if (!(spad->flags & MEDIA_PAD_FL_SINK))
85 continue;
Andrzej Hajda1bddf1b2013-06-03 05:16:13 -030086 pad = media_entity_remote_pad(spad);
Sylwester Nawrocki39bb6df62013-03-08 08:58:34 -030087 if (pad)
88 break;
89 }
90
Mauro Carvalho Chehab3efdf622015-05-07 22:12:32 -030091 if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
Sylwester Nawrocki0f735f52012-04-27 09:33:10 -030092 break;
Sylwester Nawrocki0f735f52012-04-27 09:33:10 -030093 sd = media_entity_to_v4l2_subdev(pad->entity);
94
95 switch (sd->grp_id) {
Sylwester Nawrocki588c87b2012-11-27 11:57:42 -030096 case GRP_ID_SENSOR:
Sylwester Nawrocki52917bc2013-05-31 11:37:24 -030097 sensor = sd;
98 /* fall through */
99 case GRP_ID_FIMC_IS_SENSOR:
Sylwester Nawrocki0f735f52012-04-27 09:33:10 -0300100 p->subdevs[IDX_SENSOR] = sd;
101 break;
Sylwester Nawrocki588c87b2012-11-27 11:57:42 -0300102 case GRP_ID_CSIS:
Sylwester Nawrocki0f735f52012-04-27 09:33:10 -0300103 p->subdevs[IDX_CSIS] = sd;
104 break;
Sylwester Nawrocki588c87b2012-11-27 11:57:42 -0300105 case GRP_ID_FLITE:
Sylwester Nawrocki4af81312012-04-27 05:29:05 -0300106 p->subdevs[IDX_FLITE] = sd;
107 break;
Sylwester Nawrocki588c87b2012-11-27 11:57:42 -0300108 case GRP_ID_FIMC:
Sylwester Nawrocki52917bc2013-05-31 11:37:24 -0300109 p->subdevs[IDX_FIMC] = sd;
Sylwester Nawrocki0f735f52012-04-27 09:33:10 -0300110 break;
Sylwester Nawrockie781bbe32013-03-21 14:49:16 -0300111 case GRP_ID_FIMC_IS:
112 p->subdevs[IDX_IS_ISP] = sd;
113 break;
Sylwester Nawrocki0f735f52012-04-27 09:33:10 -0300114 default:
Sylwester Nawrockie781bbe32013-03-21 14:49:16 -0300115 break;
Sylwester Nawrocki0f735f52012-04-27 09:33:10 -0300116 }
Sylwester Nawrocki39bb6df62013-03-08 08:58:34 -0300117 me = &sd->entity;
118 if (me->num_pads == 1)
119 break;
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300120 }
Sylwester Nawrocki52917bc2013-05-31 11:37:24 -0300121
122 if (sensor && p->subdevs[IDX_FIMC])
123 __setup_sensor_notification(fmd, sensor, p->subdevs[IDX_FIMC]);
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300124}
125
126/**
127 * __subdev_set_power - change power state of a single subdev
128 * @sd: subdevice to change power state for
129 * @on: 1 to enable power or 0 to disable
130 *
131 * Return result of s_power subdev operation or -ENXIO if sd argument
132 * is NULL. Return 0 if the subdevice does not implement s_power.
133 */
134static int __subdev_set_power(struct v4l2_subdev *sd, int on)
135{
136 int *use_count;
137 int ret;
138
139 if (sd == NULL)
140 return -ENXIO;
141
142 use_count = &sd->entity.use_count;
143 if (on && (*use_count)++ > 0)
144 return 0;
145 else if (!on && (*use_count == 0 || --(*use_count) > 0))
146 return 0;
147 ret = v4l2_subdev_call(sd, core, s_power, on);
148
149 return ret != -ENOIOCTLCMD ? ret : 0;
150}
151
152/**
153 * fimc_pipeline_s_power - change power state of all pipeline subdevs
154 * @fimc: fimc device terminating the pipeline
Sylwester Nawrocki0f735f52012-04-27 09:33:10 -0300155 * @state: true to power on, false to power off
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300156 *
Sylwester Nawrocki0f735f52012-04-27 09:33:10 -0300157 * Needs to be called with the graph mutex held.
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300158 */
Sylwester Nawrockif8bca4f2012-11-20 08:54:22 -0300159static int fimc_pipeline_s_power(struct fimc_pipeline *p, bool on)
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300160{
Sylwester Nawrockif8bca4f2012-11-20 08:54:22 -0300161 static const u8 seq[2][IDX_MAX - 1] = {
162 { IDX_IS_ISP, IDX_SENSOR, IDX_CSIS, IDX_FLITE },
163 { IDX_CSIS, IDX_FLITE, IDX_SENSOR, IDX_IS_ISP },
164 };
165 int i, ret = 0;
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300166
Sylwester Nawrocki0f735f52012-04-27 09:33:10 -0300167 if (p->subdevs[IDX_SENSOR] == NULL)
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300168 return -ENXIO;
169
Sylwester Nawrockif8bca4f2012-11-20 08:54:22 -0300170 for (i = 0; i < IDX_MAX - 1; i++) {
171 unsigned int idx = seq[on][i];
Sylwester Nawrocki0f735f52012-04-27 09:33:10 -0300172
Sylwester Nawrockif8bca4f2012-11-20 08:54:22 -0300173 ret = __subdev_set_power(p->subdevs[idx], on);
174
175
Sylwester Nawrocki0f735f52012-04-27 09:33:10 -0300176 if (ret < 0 && ret != -ENXIO)
Sylwester Nawrockif8bca4f2012-11-20 08:54:22 -0300177 goto error;
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300178 }
Sylwester Nawrocki0f735f52012-04-27 09:33:10 -0300179 return 0;
Sylwester Nawrockif8bca4f2012-11-20 08:54:22 -0300180error:
181 for (; i >= 0; i--) {
182 unsigned int idx = seq[on][i];
183 __subdev_set_power(p->subdevs[idx], !on);
184 }
185 return ret;
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300186}
187
188/**
Jacek Anaszewski76775772016-01-18 14:10:26 -0200189 * __fimc_pipeline_enable - enable power of all pipeline subdevs
190 * and the sensor clock
191 * @ep: video pipeline structure
192 * @fmd: fimc media device
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300193 *
Sylwester Nawrocki740ad922012-12-06 10:26:19 -0300194 * Called with the graph mutex held.
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300195 */
Jacek Anaszewski76775772016-01-18 14:10:26 -0200196static int __fimc_pipeline_enable(struct exynos_media_pipeline *ep,
197 struct fimc_md *fmd)
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300198{
Sylwester Nawrocki403dfbe2013-05-31 11:37:22 -0300199 struct fimc_pipeline *p = to_fimc_pipeline(ep);
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300200 int ret;
201
Jacek Anaszewski76775772016-01-18 14:10:26 -0200202 /* Enable PXLASYNC clock if this pipeline includes FIMC-IS */
Sylwester Nawrocki056f4f32013-03-21 14:43:17 -0300203 if (!IS_ERR(fmd->wbclk[CLK_IDX_WB_B]) && p->subdevs[IDX_IS_ISP]) {
204 ret = clk_prepare_enable(fmd->wbclk[CLK_IDX_WB_B]);
205 if (ret < 0)
206 return ret;
207 }
Sylwester Nawrockifa91f102014-02-24 11:44:50 -0300208
Sylwester Nawrocki056f4f32013-03-21 14:43:17 -0300209 ret = fimc_pipeline_s_power(p, 1);
210 if (!ret)
211 return 0;
212
Sylwester Nawrocki056f4f32013-03-21 14:43:17 -0300213 if (!IS_ERR(fmd->wbclk[CLK_IDX_WB_B]) && p->subdevs[IDX_IS_ISP])
214 clk_disable_unprepare(fmd->wbclk[CLK_IDX_WB_B]);
215
216 return ret;
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300217}
218
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300219/**
Jacek Anaszewski76775772016-01-18 14:10:26 -0200220 * __fimc_pipeline_open - update the pipeline information, enable power
221 * of all pipeline subdevs and the sensor clock
222 * @me: media entity to start graph walk with
223 * @prepare: true to walk the current pipeline and acquire all subdevs
224 *
225 * Called with the graph mutex held.
226 */
227static int __fimc_pipeline_open(struct exynos_media_pipeline *ep,
228 struct media_entity *me, bool prepare)
229{
230 struct fimc_md *fmd = entity_to_fimc_mdev(me);
231 struct fimc_pipeline *p = to_fimc_pipeline(ep);
232 struct v4l2_subdev *sd;
233
234 if (WARN_ON(p == NULL || me == NULL))
235 return -EINVAL;
236
237 if (prepare)
238 fimc_pipeline_prepare(p, me);
239
240 sd = p->subdevs[IDX_SENSOR];
241 if (sd == NULL) {
242 pr_warn("%s(): No sensor subdev\n", __func__);
243 /*
244 * Pipeline open cannot fail so as to make it possible
245 * for the user space to configure the pipeline.
246 */
247 return 0;
248 }
249
250 return __fimc_pipeline_enable(ep, fmd);
251}
252
253/**
Sylwester Nawrockib9ee31e62012-08-14 10:46:58 -0300254 * __fimc_pipeline_close - disable the sensor clock and pipeline power
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300255 * @fimc: fimc device terminating the pipeline
256 *
Sylwester Nawrocki740ad922012-12-06 10:26:19 -0300257 * Disable power of all subdevs and turn the external sensor clock off.
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300258 */
Sylwester Nawrocki403dfbe2013-05-31 11:37:22 -0300259static int __fimc_pipeline_close(struct exynos_media_pipeline *ep)
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300260{
Sylwester Nawrocki403dfbe2013-05-31 11:37:22 -0300261 struct fimc_pipeline *p = to_fimc_pipeline(ep);
Sylwester Nawrocki056f4f32013-03-21 14:43:17 -0300262 struct v4l2_subdev *sd = p ? p->subdevs[IDX_SENSOR] : NULL;
263 struct fimc_md *fmd;
Sylwester Nawrocki36da6fc2013-05-31 11:37:23 -0300264 int ret;
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300265
Sylwester Nawrocki36da6fc2013-05-31 11:37:23 -0300266 if (sd == NULL) {
267 pr_warn("%s(): No sensor subdev\n", __func__);
268 return 0;
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300269 }
Sylwester Nawrocki056f4f32013-03-21 14:43:17 -0300270
Sylwester Nawrocki36da6fc2013-05-31 11:37:23 -0300271 ret = fimc_pipeline_s_power(p, 0);
Sylwester Nawrocki36da6fc2013-05-31 11:37:23 -0300272
Sylwester Nawrocki056f4f32013-03-21 14:43:17 -0300273 fmd = entity_to_fimc_mdev(&sd->entity);
274
275 /* Disable PXLASYNC clock if this pipeline includes FIMC-IS */
276 if (!IS_ERR(fmd->wbclk[CLK_IDX_WB_B]) && p->subdevs[IDX_IS_ISP])
277 clk_disable_unprepare(fmd->wbclk[CLK_IDX_WB_B]);
278
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300279 return ret == -ENXIO ? 0 : ret;
280}
281
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300282/**
Sylwester Nawrocki8d274e72012-11-13 14:35:22 -0300283 * __fimc_pipeline_s_stream - call s_stream() on pipeline subdevs
Sylwester Nawrocki0f735f52012-04-27 09:33:10 -0300284 * @pipeline: video pipeline structure
Sylwester Nawrocki8d274e72012-11-13 14:35:22 -0300285 * @on: passed as the s_stream() callback argument
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300286 */
Sylwester Nawrocki403dfbe2013-05-31 11:37:22 -0300287static int __fimc_pipeline_s_stream(struct exynos_media_pipeline *ep, bool on)
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300288{
Sylwester Nawrocki8d274e72012-11-13 14:35:22 -0300289 static const u8 seq[2][IDX_MAX] = {
290 { IDX_FIMC, IDX_SENSOR, IDX_IS_ISP, IDX_CSIS, IDX_FLITE },
291 { IDX_CSIS, IDX_FLITE, IDX_FIMC, IDX_SENSOR, IDX_IS_ISP },
292 };
Sylwester Nawrocki403dfbe2013-05-31 11:37:22 -0300293 struct fimc_pipeline *p = to_fimc_pipeline(ep);
Jacek Anaszewski76775772016-01-18 14:10:26 -0200294 struct fimc_md *fmd = entity_to_fimc_mdev(&p->subdevs[IDX_CSIS]->entity);
295 enum fimc_subdev_index sd_id;
Sylwester Nawrocki8d274e72012-11-13 14:35:22 -0300296 int i, ret = 0;
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300297
Jacek Anaszewski76775772016-01-18 14:10:26 -0200298 if (p->subdevs[IDX_SENSOR] == NULL) {
299 if (!fmd->user_subdev_api) {
300 /*
301 * Sensor must be already discovered if we
302 * aren't in the user_subdev_api mode
303 */
304 return -ENODEV;
305 }
306
307 /* Get pipeline sink entity */
308 if (p->subdevs[IDX_FIMC])
309 sd_id = IDX_FIMC;
310 else if (p->subdevs[IDX_IS_ISP])
311 sd_id = IDX_IS_ISP;
312 else if (p->subdevs[IDX_FLITE])
313 sd_id = IDX_FLITE;
314 else
315 return -ENODEV;
316
317 /*
318 * Sensor could have been linked between open and STREAMON -
319 * check if this is the case.
320 */
321 fimc_pipeline_prepare(p, &p->subdevs[sd_id]->entity);
322
323 if (p->subdevs[IDX_SENSOR] == NULL)
324 return -ENODEV;
325
326 ret = __fimc_pipeline_enable(ep, fmd);
327 if (ret < 0)
328 return ret;
329
330 }
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300331
Sylwester Nawrocki0f735f52012-04-27 09:33:10 -0300332 for (i = 0; i < IDX_MAX; i++) {
Sylwester Nawrocki8d274e72012-11-13 14:35:22 -0300333 unsigned int idx = seq[on][i];
Sylwester Nawrocki0f735f52012-04-27 09:33:10 -0300334
335 ret = v4l2_subdev_call(p->subdevs[idx], video, s_stream, on);
336
337 if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV)
Sylwester Nawrocki8d274e72012-11-13 14:35:22 -0300338 goto error;
Sylwester Nawrocki0f735f52012-04-27 09:33:10 -0300339 }
Jacek Anaszewski76775772016-01-18 14:10:26 -0200340
Sylwester Nawrocki0f735f52012-04-27 09:33:10 -0300341 return 0;
Sylwester Nawrocki8d274e72012-11-13 14:35:22 -0300342error:
Jacek Anaszewski76775772016-01-18 14:10:26 -0200343 fimc_pipeline_s_power(p, !on);
Sylwester Nawrocki8d274e72012-11-13 14:35:22 -0300344 for (; i >= 0; i--) {
345 unsigned int idx = seq[on][i];
346 v4l2_subdev_call(p->subdevs[idx], video, s_stream, !on);
347 }
348 return ret;
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300349}
Sylwester Nawrockib9ee31e62012-08-14 10:46:58 -0300350
351/* Media pipeline operations for the FIMC/FIMC-LITE video device driver */
Sylwester Nawrocki403dfbe2013-05-31 11:37:22 -0300352static const struct exynos_media_pipeline_ops fimc_pipeline_ops = {
Sylwester Nawrocki740ad922012-12-06 10:26:19 -0300353 .open = __fimc_pipeline_open,
354 .close = __fimc_pipeline_close,
355 .set_stream = __fimc_pipeline_s_stream,
Sylwester Nawrockib9ee31e62012-08-14 10:46:58 -0300356};
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300357
Sylwester Nawrocki403dfbe2013-05-31 11:37:22 -0300358static struct exynos_media_pipeline *fimc_md_pipeline_create(
359 struct fimc_md *fmd)
360{
361 struct fimc_pipeline *p;
362
363 p = kzalloc(sizeof(*p), GFP_KERNEL);
364 if (!p)
365 return NULL;
366
367 list_add_tail(&p->list, &fmd->pipelines);
368
369 p->ep.ops = &fimc_pipeline_ops;
370 return &p->ep;
371}
372
373static void fimc_md_pipelines_free(struct fimc_md *fmd)
374{
375 while (!list_empty(&fmd->pipelines)) {
376 struct fimc_pipeline *p;
377
378 p = list_entry(fmd->pipelines.next, typeof(*p), list);
379 list_del(&p->list);
380 kfree(p);
381 }
382}
383
Sylwester Nawrocki2b13f7d2013-03-29 14:12:39 -0300384/* Parse port node and register as a sub-device any sensor specified there. */
385static int fimc_md_parse_port_node(struct fimc_md *fmd,
386 struct device_node *port,
387 unsigned int index)
388{
Sylwester Nawrocki49b2f4c52014-04-15 08:35:25 -0300389 struct fimc_source_info *pd = &fmd->sensor[index].pdata;
Sylwester Nawrocki2b13f7d2013-03-29 14:12:39 -0300390 struct device_node *rem, *ep, *np;
Sylwester Nawrocki2b13f7d2013-03-29 14:12:39 -0300391 struct v4l2_of_endpoint endpoint;
Javier Martinez Canillas234eab82016-01-11 14:47:15 -0200392 int ret;
Sylwester Nawrocki2b13f7d2013-03-29 14:12:39 -0300393
394 /* Assume here a port node can have only one endpoint node. */
395 ep = of_get_next_child(port, NULL);
396 if (!ep)
397 return 0;
398
Javier Martinez Canillas234eab82016-01-11 14:47:15 -0200399 ret = v4l2_of_parse_endpoint(ep, &endpoint);
400 if (ret) {
401 of_node_put(ep);
402 return ret;
403 }
404
Philipp Zabelf2a575f2014-02-14 11:53:56 +0100405 if (WARN_ON(endpoint.base.port == 0) || index >= FIMC_MAX_SENSORS)
Sylwester Nawrocki2b13f7d2013-03-29 14:12:39 -0300406 return -EINVAL;
407
Philipp Zabelf2a575f2014-02-14 11:53:56 +0100408 pd->mux_id = (endpoint.base.port - 1) & 0x1;
Sylwester Nawrocki2b13f7d2013-03-29 14:12:39 -0300409
Philipp Zabelfd9fdb72014-02-10 22:01:48 +0100410 rem = of_graph_get_remote_port_parent(ep);
Sylwester Nawrocki2b13f7d2013-03-29 14:12:39 -0300411 of_node_put(ep);
412 if (rem == NULL) {
413 v4l2_info(&fmd->v4l2_dev, "Remote device at %s not found\n",
414 ep->full_name);
415 return 0;
416 }
Sylwester Nawrocki2b13f7d2013-03-29 14:12:39 -0300417
Philipp Zabelf2a575f2014-02-14 11:53:56 +0100418 if (fimc_input_is_parallel(endpoint.base.port)) {
Sylwester Nawrocki2b13f7d2013-03-29 14:12:39 -0300419 if (endpoint.bus_type == V4L2_MBUS_PARALLEL)
420 pd->sensor_bus_type = FIMC_BUS_TYPE_ITU_601;
421 else
422 pd->sensor_bus_type = FIMC_BUS_TYPE_ITU_656;
423 pd->flags = endpoint.bus.parallel.flags;
Philipp Zabelf2a575f2014-02-14 11:53:56 +0100424 } else if (fimc_input_is_mipi_csi(endpoint.base.port)) {
Sylwester Nawrocki2b13f7d2013-03-29 14:12:39 -0300425 /*
426 * MIPI CSI-2: only input mux selection and
427 * the sensor's clock frequency is needed.
428 */
429 pd->sensor_bus_type = FIMC_BUS_TYPE_MIPI_CSI2;
430 } else {
431 v4l2_err(&fmd->v4l2_dev, "Wrong port id (%u) at node %s\n",
Philipp Zabelf2a575f2014-02-14 11:53:56 +0100432 endpoint.base.port, rem->full_name);
Sylwester Nawrocki2b13f7d2013-03-29 14:12:39 -0300433 }
434 /*
435 * For FIMC-IS handled sensors, that are placed under i2c-isp device
436 * node, FIMC is connected to the FIMC-IS through its ISP Writeback
437 * input. Sensors are attached to the FIMC-LITE hostdata interface
438 * directly or through MIPI-CSIS, depending on the external media bus
439 * used. This needs to be handled in a more reliable way, not by just
440 * checking parent's node name.
441 */
442 np = of_get_parent(rem);
443
444 if (np && !of_node_cmp(np->name, "i2c-isp"))
445 pd->fimc_bus_type = FIMC_BUS_TYPE_ISP_WRITEBACK;
446 else
447 pd->fimc_bus_type = pd->sensor_bus_type;
448
Krzysztof Kozlowski7e8da342016-01-25 22:41:46 -0200449 if (WARN_ON(index >= ARRAY_SIZE(fmd->sensor))) {
450 of_node_put(rem);
Sylwester Nawrockifa91f102014-02-24 11:44:50 -0300451 return -EINVAL;
Krzysztof Kozlowski7e8da342016-01-25 22:41:46 -0200452 }
Sylwester Nawrocki2b13f7d2013-03-29 14:12:39 -0300453
Sylwester Nawrockifa91f102014-02-24 11:44:50 -0300454 fmd->sensor[index].asd.match_type = V4L2_ASYNC_MATCH_OF;
455 fmd->sensor[index].asd.match.of.node = rem;
456 fmd->async_subdevs[index] = &fmd->sensor[index].asd;
457
458 fmd->num_sensors++;
459
460 of_node_put(rem);
461 return 0;
Sylwester Nawrocki2b13f7d2013-03-29 14:12:39 -0300462}
463
464/* Register all SoC external sub-devices */
Sylwester Nawrocki49b2f4c52014-04-15 08:35:25 -0300465static int fimc_md_register_sensor_entities(struct fimc_md *fmd)
Sylwester Nawrocki2b13f7d2013-03-29 14:12:39 -0300466{
467 struct device_node *parent = fmd->pdev->dev.of_node;
468 struct device_node *node, *ports;
469 int index = 0;
470 int ret;
471
Sylwester Nawrocki49b2f4c52014-04-15 08:35:25 -0300472 /*
473 * Runtime resume one of the FIMC entities to make sure
474 * the sclk_cam clocks are not globally disabled.
475 */
476 if (!fmd->pmf)
477 return -ENXIO;
478
479 ret = pm_runtime_get_sync(fmd->pmf);
480 if (ret < 0)
481 return ret;
482
483 fmd->num_sensors = 0;
484
Sylwester Nawrocki2b13f7d2013-03-29 14:12:39 -0300485 /* Attach sensors linked to MIPI CSI-2 receivers */
486 for_each_available_child_of_node(parent, node) {
487 struct device_node *port;
488
489 if (of_node_cmp(node->name, "csis"))
490 continue;
491 /* The csis node can have only port subnode. */
492 port = of_get_next_child(node, NULL);
493 if (!port)
494 continue;
495
496 ret = fimc_md_parse_port_node(fmd, port, index);
Amitoj Kaur Chawla458a3952016-01-25 13:21:37 -0200497 if (ret < 0) {
498 of_node_put(node);
Sylwester Nawrocki49b2f4c52014-04-15 08:35:25 -0300499 goto rpm_put;
Amitoj Kaur Chawla458a3952016-01-25 13:21:37 -0200500 }
Sylwester Nawrocki2b13f7d2013-03-29 14:12:39 -0300501 index++;
502 }
503
504 /* Attach sensors listed in the parallel-ports node */
505 ports = of_get_child_by_name(parent, "parallel-ports");
506 if (!ports)
Sylwester Nawrocki49b2f4c52014-04-15 08:35:25 -0300507 goto rpm_put;
Sylwester Nawrocki2b13f7d2013-03-29 14:12:39 -0300508
509 for_each_child_of_node(ports, node) {
510 ret = fimc_md_parse_port_node(fmd, node, index);
Amitoj Kaur Chawla458a3952016-01-25 13:21:37 -0200511 if (ret < 0) {
512 of_node_put(node);
Sylwester Nawrocki2b13f7d2013-03-29 14:12:39 -0300513 break;
Amitoj Kaur Chawla458a3952016-01-25 13:21:37 -0200514 }
Sylwester Nawrocki2b13f7d2013-03-29 14:12:39 -0300515 index++;
516 }
Sylwester Nawrocki49b2f4c52014-04-15 08:35:25 -0300517rpm_put:
518 pm_runtime_put(fmd->pmf);
519 return ret;
Sylwester Nawrocki2b13f7d2013-03-29 14:12:39 -0300520}
521
Sylwester Nawrockie2985a22013-03-08 12:59:33 -0300522static int __of_get_csis_id(struct device_node *np)
523{
524 u32 reg = 0;
525
526 np = of_get_child_by_name(np, "port");
527 if (!np)
528 return -EINVAL;
529 of_property_read_u32(np, "reg", &reg);
530 return reg - FIMC_INPUT_MIPI_CSI2_0;
531}
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300532
533/*
Sylwester Nawrocki7b43a6f2012-12-12 08:16:05 -0300534 * MIPI-CSIS, FIMC and FIMC-LITE platform devices registration.
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300535 */
Sylwester Nawrocki7b43a6f2012-12-12 08:16:05 -0300536static int register_fimc_lite_entity(struct fimc_md *fmd,
537 struct fimc_lite *fimc_lite)
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300538{
Sachin Kamat8163ec02012-10-25 10:56:00 -0300539 struct v4l2_subdev *sd;
Sylwester Nawrocki403dfbe2013-05-31 11:37:22 -0300540 struct exynos_media_pipeline *ep;
Sylwester Nawrockiafd73482012-10-25 10:48:44 -0300541 int ret;
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300542
Sylwester Nawrocki7b43a6f2012-12-12 08:16:05 -0300543 if (WARN_ON(fimc_lite->index >= FIMC_LITE_MAX_DEVS ||
544 fmd->fimc_lite[fimc_lite->index]))
545 return -EBUSY;
546
547 sd = &fimc_lite->subdev;
548 sd->grp_id = GRP_ID_FLITE;
Sylwester Nawrocki403dfbe2013-05-31 11:37:22 -0300549
550 ep = fimc_md_pipeline_create(fmd);
551 if (!ep)
552 return -ENOMEM;
553
554 v4l2_set_subdev_hostdata(sd, ep);
Sylwester Nawrocki7b43a6f2012-12-12 08:16:05 -0300555
556 ret = v4l2_device_register_subdev(&fmd->v4l2_dev, sd);
557 if (!ret)
558 fmd->fimc_lite[fimc_lite->index] = fimc_lite;
559 else
560 v4l2_err(&fmd->v4l2_dev, "Failed to register FIMC.LITE%d\n",
561 fimc_lite->index);
562 return ret;
563}
564
565static int register_fimc_entity(struct fimc_md *fmd, struct fimc_dev *fimc)
566{
567 struct v4l2_subdev *sd;
Sylwester Nawrocki403dfbe2013-05-31 11:37:22 -0300568 struct exynos_media_pipeline *ep;
Sylwester Nawrocki7b43a6f2012-12-12 08:16:05 -0300569 int ret;
570
571 if (WARN_ON(fimc->id >= FIMC_MAX_DEVS || fmd->fimc[fimc->id]))
572 return -EBUSY;
Sylwester Nawrocki4af81312012-04-27 05:29:05 -0300573
Sachin Kamat8163ec02012-10-25 10:56:00 -0300574 sd = &fimc->vid_cap.subdev;
Sylwester Nawrocki588c87b2012-11-27 11:57:42 -0300575 sd->grp_id = GRP_ID_FIMC;
Sylwester Nawrocki403dfbe2013-05-31 11:37:22 -0300576
577 ep = fimc_md_pipeline_create(fmd);
578 if (!ep)
579 return -ENOMEM;
580
581 v4l2_set_subdev_hostdata(sd, ep);
Sylwester Nawrocki693f5c42012-04-20 18:57:25 -0300582
583 ret = v4l2_device_register_subdev(&fmd->v4l2_dev, sd);
Sylwester Nawrocki7b43a6f2012-12-12 08:16:05 -0300584 if (!ret) {
Sylwester Nawrocki3e20c342013-03-21 14:47:17 -0300585 if (!fmd->pmf && fimc->pdev)
586 fmd->pmf = &fimc->pdev->dev;
Sylwester Nawrocki7b43a6f2012-12-12 08:16:05 -0300587 fmd->fimc[fimc->id] = fimc;
588 fimc->vid_cap.user_subdev_api = fmd->user_subdev_api;
589 } else {
Sylwester Nawrocki693f5c42012-04-20 18:57:25 -0300590 v4l2_err(&fmd->v4l2_dev, "Failed to register FIMC.%d (%d)\n",
591 fimc->id, ret);
592 }
Sylwester Nawrocki7b43a6f2012-12-12 08:16:05 -0300593 return ret;
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300594}
595
Sylwester Nawrocki7b43a6f2012-12-12 08:16:05 -0300596static int register_csis_entity(struct fimc_md *fmd,
597 struct platform_device *pdev,
598 struct v4l2_subdev *sd)
Sylwester Nawrocki4af81312012-04-27 05:29:05 -0300599{
Sylwester Nawrocki7b43a6f2012-12-12 08:16:05 -0300600 struct device_node *node = pdev->dev.of_node;
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300601 int id, ret;
602
Sylwester Nawrockie2985a22013-03-08 12:59:33 -0300603 id = node ? __of_get_csis_id(node) : max(0, pdev->id);
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300604
Sylwester Nawrockie2985a22013-03-08 12:59:33 -0300605 if (WARN_ON(id < 0 || id >= CSIS_MAX_ENTITIES))
606 return -ENOENT;
607
608 if (WARN_ON(fmd->csis[id].sd))
Sylwester Nawrocki7b43a6f2012-12-12 08:16:05 -0300609 return -EBUSY;
610
Sylwester Nawrocki588c87b2012-11-27 11:57:42 -0300611 sd->grp_id = GRP_ID_CSIS;
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300612 ret = v4l2_device_register_subdev(&fmd->v4l2_dev, sd);
Sylwester Nawrockiafd73482012-10-25 10:48:44 -0300613 if (!ret)
614 fmd->csis[id].sd = sd;
615 else
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300616 v4l2_err(&fmd->v4l2_dev,
Sylwester Nawrocki7b43a6f2012-12-12 08:16:05 -0300617 "Failed to register MIPI-CSIS.%d (%d)\n", id, ret);
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300618 return ret;
619}
620
Sylwester Nawrockie781bbe32013-03-21 14:49:16 -0300621static int register_fimc_is_entity(struct fimc_md *fmd, struct fimc_is *is)
622{
623 struct v4l2_subdev *sd = &is->isp.subdev;
Sylwester Nawrocki34947b82013-12-20 19:35:06 -0300624 struct exynos_media_pipeline *ep;
Sylwester Nawrockie781bbe32013-03-21 14:49:16 -0300625 int ret;
626
Sylwester Nawrocki34947b82013-12-20 19:35:06 -0300627 /* Allocate pipeline object for the ISP capture video node. */
628 ep = fimc_md_pipeline_create(fmd);
629 if (!ep)
630 return -ENOMEM;
631
632 v4l2_set_subdev_hostdata(sd, ep);
633
Sylwester Nawrockie781bbe32013-03-21 14:49:16 -0300634 ret = v4l2_device_register_subdev(&fmd->v4l2_dev, sd);
635 if (ret) {
636 v4l2_err(&fmd->v4l2_dev,
637 "Failed to register FIMC-ISP (%d)\n", ret);
638 return ret;
639 }
640
641 fmd->fimc_is = is;
642 return 0;
643}
644
Sylwester Nawrocki7b43a6f2012-12-12 08:16:05 -0300645static int fimc_md_register_platform_entity(struct fimc_md *fmd,
646 struct platform_device *pdev,
647 int plat_entity)
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300648{
Sylwester Nawrocki7b43a6f2012-12-12 08:16:05 -0300649 struct device *dev = &pdev->dev;
650 int ret = -EPROBE_DEFER;
651 void *drvdata;
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300652
Sylwester Nawrocki7b43a6f2012-12-12 08:16:05 -0300653 /* Lock to ensure dev->driver won't change. */
654 device_lock(dev);
Sylwester Nawrockiecd9acb2012-03-21 09:58:09 -0300655
Sylwester Nawrocki7b43a6f2012-12-12 08:16:05 -0300656 if (!dev->driver || !try_module_get(dev->driver->owner))
657 goto dev_unlock;
Sylwester Nawrocki4af81312012-04-27 05:29:05 -0300658
Sylwester Nawrocki7b43a6f2012-12-12 08:16:05 -0300659 drvdata = dev_get_drvdata(dev);
Jonathan McCrohanf58c91c2013-10-20 21:34:01 -0300660 /* Some subdev didn't probe successfully id drvdata is NULL */
Sylwester Nawrocki7b43a6f2012-12-12 08:16:05 -0300661 if (drvdata) {
662 switch (plat_entity) {
663 case IDX_FIMC:
664 ret = register_fimc_entity(fmd, drvdata);
Sylwester Nawrockiecd9acb2012-03-21 09:58:09 -0300665 break;
Sylwester Nawrocki7b43a6f2012-12-12 08:16:05 -0300666 case IDX_FLITE:
667 ret = register_fimc_lite_entity(fmd, drvdata);
668 break;
669 case IDX_CSIS:
670 ret = register_csis_entity(fmd, pdev, drvdata);
671 break;
Sylwester Nawrockie781bbe32013-03-21 14:49:16 -0300672 case IDX_IS_ISP:
673 ret = register_fimc_is_entity(fmd, drvdata);
674 break;
Sylwester Nawrocki7b43a6f2012-12-12 08:16:05 -0300675 default:
676 ret = -ENODEV;
Sylwester Nawrockiecd9acb2012-03-21 09:58:09 -0300677 }
678 }
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300679
Sylwester Nawrocki7b43a6f2012-12-12 08:16:05 -0300680 module_put(dev->driver->owner);
681dev_unlock:
682 device_unlock(dev);
683 if (ret == -EPROBE_DEFER)
684 dev_info(&fmd->pdev->dev, "deferring %s device registration\n",
685 dev_name(dev));
686 else if (ret < 0)
687 dev_err(&fmd->pdev->dev, "%s device registration failed (%d)\n",
688 dev_name(dev), ret);
689 return ret;
690}
691
Sylwester Nawrockie2985a22013-03-08 12:59:33 -0300692/* Register FIMC, FIMC-LITE and CSIS media entities */
Sylwester Nawrocki49b2f4c52014-04-15 08:35:25 -0300693static int fimc_md_register_platform_entities(struct fimc_md *fmd,
694 struct device_node *parent)
Sylwester Nawrockie2985a22013-03-08 12:59:33 -0300695{
696 struct device_node *node;
697 int ret = 0;
698
699 for_each_available_child_of_node(parent, node) {
700 struct platform_device *pdev;
701 int plat_entity = -1;
702
703 pdev = of_find_device_by_node(node);
704 if (!pdev)
705 continue;
706
707 /* If driver of any entity isn't ready try all again later. */
708 if (!strcmp(node->name, CSIS_OF_NODE_NAME))
709 plat_entity = IDX_CSIS;
Sylwester Nawrockie781bbe32013-03-21 14:49:16 -0300710 else if (!strcmp(node->name, FIMC_IS_OF_NODE_NAME))
711 plat_entity = IDX_IS_ISP;
Sylwester Nawrockie2985a22013-03-08 12:59:33 -0300712 else if (!strcmp(node->name, FIMC_LITE_OF_NODE_NAME))
713 plat_entity = IDX_FLITE;
714 else if (!strcmp(node->name, FIMC_OF_NODE_NAME) &&
715 !of_property_read_bool(node, "samsung,lcd-wb"))
716 plat_entity = IDX_FIMC;
717
718 if (plat_entity >= 0)
719 ret = fimc_md_register_platform_entity(fmd, pdev,
720 plat_entity);
721 put_device(&pdev->dev);
Amitoj Kaur Chawla458a3952016-01-25 13:21:37 -0200722 if (ret < 0) {
723 of_node_put(node);
Sylwester Nawrockie2985a22013-03-08 12:59:33 -0300724 break;
Amitoj Kaur Chawla458a3952016-01-25 13:21:37 -0200725 }
Sylwester Nawrockie2985a22013-03-08 12:59:33 -0300726 }
727
728 return ret;
729}
Sylwester Nawrockie2985a22013-03-08 12:59:33 -0300730
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300731static void fimc_md_unregister_entities(struct fimc_md *fmd)
732{
733 int i;
734
735 for (i = 0; i < FIMC_MAX_DEVS; i++) {
Sylwester Nawrocki403dfbe2013-05-31 11:37:22 -0300736 struct fimc_dev *dev = fmd->fimc[i];
737 if (dev == NULL)
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300738 continue;
Sylwester Nawrocki403dfbe2013-05-31 11:37:22 -0300739 v4l2_device_unregister_subdev(&dev->vid_cap.subdev);
740 dev->vid_cap.ve.pipe = NULL;
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300741 fmd->fimc[i] = NULL;
742 }
Sylwester Nawrocki4af81312012-04-27 05:29:05 -0300743 for (i = 0; i < FIMC_LITE_MAX_DEVS; i++) {
Sylwester Nawrocki403dfbe2013-05-31 11:37:22 -0300744 struct fimc_lite *dev = fmd->fimc_lite[i];
745 if (dev == NULL)
Sylwester Nawrocki4af81312012-04-27 05:29:05 -0300746 continue;
Sylwester Nawrocki403dfbe2013-05-31 11:37:22 -0300747 v4l2_device_unregister_subdev(&dev->subdev);
748 dev->ve.pipe = NULL;
Sylwester Nawrocki4af81312012-04-27 05:29:05 -0300749 fmd->fimc_lite[i] = NULL;
750 }
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300751 for (i = 0; i < CSIS_MAX_ENTITIES; i++) {
752 if (fmd->csis[i].sd == NULL)
753 continue;
754 v4l2_device_unregister_subdev(fmd->csis[i].sd);
755 fmd->csis[i].sd = NULL;
756 }
Sylwester Nawrockie41a35c2013-04-18 09:05:54 -0300757
758 if (fmd->fimc_is)
759 v4l2_device_unregister_subdev(&fmd->fimc_is->isp.subdev);
760
Sylwester Nawrocki7b43a6f2012-12-12 08:16:05 -0300761 v4l2_info(&fmd->v4l2_dev, "Unregistered all entities\n");
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300762}
763
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300764/**
765 * __fimc_md_create_fimc_links - create links to all FIMC entities
766 * @fmd: fimc media device
767 * @source: the source entity to create links to all fimc entities from
768 * @sensor: sensor subdev linked to FIMC[fimc_id] entity, may be null
769 * @pad: the source entity pad index
Sylwester Nawrockid0da3c32012-05-16 13:08:30 -0300770 * @link_mask: bitmask of the fimc devices for which link should be enabled
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300771 */
Sylwester Nawrocki4af81312012-04-27 05:29:05 -0300772static int __fimc_md_create_fimc_sink_links(struct fimc_md *fmd,
773 struct media_entity *source,
774 struct v4l2_subdev *sensor,
Sylwester Nawrockid0da3c32012-05-16 13:08:30 -0300775 int pad, int link_mask)
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300776{
Sylwester Nawrocki4c8f0622013-04-09 11:11:58 -0300777 struct fimc_source_info *si = NULL;
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300778 struct media_entity *sink;
Sylwester Nawrocki4af81312012-04-27 05:29:05 -0300779 unsigned int flags = 0;
Sylwester Nawrockif998bb72012-11-27 13:29:48 -0300780 int i, ret = 0;
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300781
Sylwester Nawrockif998bb72012-11-27 13:29:48 -0300782 if (sensor) {
783 si = v4l2_get_subdev_hostdata(sensor);
784 /* Skip direct FIMC links in the logical FIMC-IS sensor path */
Sylwester Nawrocki4c8f0622013-04-09 11:11:58 -0300785 if (si && si->fimc_bus_type == FIMC_BUS_TYPE_ISP_WRITEBACK)
Sylwester Nawrockif998bb72012-11-27 13:29:48 -0300786 ret = 1;
787 }
788
789 for (i = 0; !ret && i < FIMC_MAX_DEVS; i++) {
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300790 if (!fmd->fimc[i])
Sylwester Nawrocki4af81312012-04-27 05:29:05 -0300791 continue;
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300792 /*
793 * Some FIMC variants are not fitted with camera capture
794 * interface. Skip creating a link from sensor for those.
795 */
Sylwester Nawrocki4af81312012-04-27 05:29:05 -0300796 if (!fmd->fimc[i]->variant->has_cam_if)
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300797 continue;
798
Sylwester Nawrockid0da3c32012-05-16 13:08:30 -0300799 flags = ((1 << i) & link_mask) ? MEDIA_LNK_FL_ENABLED : 0;
Sylwester Nawrocki4af81312012-04-27 05:29:05 -0300800
Sylwester Nawrocki693f5c42012-04-20 18:57:25 -0300801 sink = &fmd->fimc[i]->vid_cap.subdev.entity;
Mauro Carvalho Chehab8df00a12015-08-07 08:14:38 -0300802 ret = media_create_pad_link(source, pad, sink,
Sylwester Nawrocki88fa8312013-03-20 10:44:39 -0300803 FIMC_SD_PAD_SINK_CAM, flags);
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300804 if (ret)
805 return ret;
806
Sylwester Nawrocki237e0262011-08-24 20:35:30 -0300807 /* Notify FIMC capture subdev entity */
808 ret = media_entity_call(sink, link_setup, &sink->pads[0],
809 &source->pads[pad], flags);
810 if (ret)
811 break;
812
Sylwester Nawrocki542fb082012-10-25 05:48:19 -0300813 v4l2_info(&fmd->v4l2_dev, "created link [%s] %c> [%s]\n",
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300814 source->name, flags ? '=' : '-', sink->name);
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300815 }
Sylwester Nawrocki4af81312012-04-27 05:29:05 -0300816
817 for (i = 0; i < FIMC_LITE_MAX_DEVS; i++) {
818 if (!fmd->fimc_lite[i])
819 continue;
820
Sylwester Nawrocki4af81312012-04-27 05:29:05 -0300821 sink = &fmd->fimc_lite[i]->subdev.entity;
Mauro Carvalho Chehab8df00a12015-08-07 08:14:38 -0300822 ret = media_create_pad_link(source, pad, sink,
Sylwester Nawrockif998bb72012-11-27 13:29:48 -0300823 FLITE_SD_PAD_SINK, 0);
Sylwester Nawrocki4af81312012-04-27 05:29:05 -0300824 if (ret)
825 return ret;
826
827 /* Notify FIMC-LITE subdev entity */
828 ret = media_entity_call(sink, link_setup, &sink->pads[0],
Sylwester Nawrockif998bb72012-11-27 13:29:48 -0300829 &source->pads[pad], 0);
Sylwester Nawrocki4af81312012-04-27 05:29:05 -0300830 if (ret)
831 break;
832
Sylwester Nawrockif998bb72012-11-27 13:29:48 -0300833 v4l2_info(&fmd->v4l2_dev, "created link [%s] -> [%s]\n",
834 source->name, sink->name);
Sylwester Nawrocki4af81312012-04-27 05:29:05 -0300835 }
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300836 return 0;
837}
838
Sylwester Nawrocki4af81312012-04-27 05:29:05 -0300839/* Create links from FIMC-LITE source pads to other entities */
840static int __fimc_md_create_flite_source_links(struct fimc_md *fmd)
841{
842 struct media_entity *source, *sink;
Sylwester Nawrockia26860b2012-12-05 13:43:05 -0300843 int i, ret = 0;
Sylwester Nawrocki4af81312012-04-27 05:29:05 -0300844
845 for (i = 0; i < FIMC_LITE_MAX_DEVS; i++) {
846 struct fimc_lite *fimc = fmd->fimc_lite[i];
Sylwester Nawrockif998bb72012-11-27 13:29:48 -0300847
Sylwester Nawrocki4af81312012-04-27 05:29:05 -0300848 if (fimc == NULL)
849 continue;
Sylwester Nawrockif998bb72012-11-27 13:29:48 -0300850
Sylwester Nawrocki4af81312012-04-27 05:29:05 -0300851 source = &fimc->subdev.entity;
Sylwester Nawrockibc7584b2013-05-31 11:37:18 -0300852 sink = &fimc->ve.vdev.entity;
Sylwester Nawrocki4af81312012-04-27 05:29:05 -0300853 /* FIMC-LITE's subdev and video node */
Mauro Carvalho Chehab8df00a12015-08-07 08:14:38 -0300854 ret = media_create_pad_link(source, FLITE_SD_PAD_SOURCE_DMA,
Sylwester Nawrockif998bb72012-11-27 13:29:48 -0300855 sink, 0, 0);
Sylwester Nawrocki4af81312012-04-27 05:29:05 -0300856 if (ret)
857 break;
Sylwester Nawrockif998bb72012-11-27 13:29:48 -0300858 /* Link from FIMC-LITE to IS-ISP subdev */
859 sink = &fmd->fimc_is->isp.subdev.entity;
Mauro Carvalho Chehab8df00a12015-08-07 08:14:38 -0300860 ret = media_create_pad_link(source, FLITE_SD_PAD_SOURCE_ISP,
Sylwester Nawrockif998bb72012-11-27 13:29:48 -0300861 sink, 0, 0);
862 if (ret)
863 break;
864 }
865
866 return ret;
867}
868
869/* Create FIMC-IS links */
870static int __fimc_md_create_fimc_is_links(struct fimc_md *fmd)
871{
Sylwester Nawrocki34947b82013-12-20 19:35:06 -0300872 struct fimc_isp *isp = &fmd->fimc_is->isp;
Sylwester Nawrockif998bb72012-11-27 13:29:48 -0300873 struct media_entity *source, *sink;
874 int i, ret;
875
Sylwester Nawrocki34947b82013-12-20 19:35:06 -0300876 source = &isp->subdev.entity;
Sylwester Nawrockif998bb72012-11-27 13:29:48 -0300877
878 for (i = 0; i < FIMC_MAX_DEVS; i++) {
879 if (fmd->fimc[i] == NULL)
880 continue;
881
Sylwester Nawrocki34947b82013-12-20 19:35:06 -0300882 /* Link from FIMC-IS-ISP subdev to FIMC */
Sylwester Nawrockif998bb72012-11-27 13:29:48 -0300883 sink = &fmd->fimc[i]->vid_cap.subdev.entity;
Mauro Carvalho Chehab8df00a12015-08-07 08:14:38 -0300884 ret = media_create_pad_link(source, FIMC_ISP_SD_PAD_SRC_FIFO,
Sylwester Nawrockif998bb72012-11-27 13:29:48 -0300885 sink, FIMC_SD_PAD_SINK_FIFO, 0);
886 if (ret)
887 return ret;
Sylwester Nawrocki4af81312012-04-27 05:29:05 -0300888 }
889
Sylwester Nawrocki34947b82013-12-20 19:35:06 -0300890 /* Link from FIMC-IS-ISP subdev to fimc-is-isp.capture video node */
891 sink = &isp->video_capture.ve.vdev.entity;
892
893 /* Skip this link if the fimc-is-isp video node driver isn't built-in */
894 if (sink->num_pads == 0)
895 return 0;
896
Mauro Carvalho Chehab8df00a12015-08-07 08:14:38 -0300897 return media_create_pad_link(source, FIMC_ISP_SD_PAD_SRC_DMA,
Sylwester Nawrocki34947b82013-12-20 19:35:06 -0300898 sink, 0, 0);
Sylwester Nawrocki4af81312012-04-27 05:29:05 -0300899}
900
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300901/**
902 * fimc_md_create_links - create default links between registered entities
903 *
904 * Parallel interface sensor entities are connected directly to FIMC capture
905 * entities. The sensors using MIPI CSIS bus are connected through immutable
906 * link with CSI receiver entity specified by mux_id. Any registered CSIS
907 * entity has a link to each registered FIMC capture entity. Enabled links
908 * are created by default between each subsequent registered sensor and
909 * subsequent FIMC capture entity. The number of default active links is
910 * determined by the number of available sensors or FIMC entities,
911 * whichever is less.
912 */
913static int fimc_md_create_links(struct fimc_md *fmd)
914{
Sylwester Nawrockia8697ec2012-12-05 13:40:04 -0300915 struct v4l2_subdev *csi_sensors[CSIS_MAX_ENTITIES] = { NULL };
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300916 struct v4l2_subdev *sensor, *csis;
Sylwester Nawrocki56bc9112013-02-01 15:00:40 -0300917 struct fimc_source_info *pdata;
Sylwester Nawrocki237e0262011-08-24 20:35:30 -0300918 struct media_entity *source, *sink;
Sylwester Nawrockid0da3c32012-05-16 13:08:30 -0300919 int i, pad, fimc_id = 0, ret = 0;
920 u32 flags, link_mask = 0;
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300921
922 for (i = 0; i < fmd->num_sensors; i++) {
923 if (fmd->sensor[i].subdev == NULL)
924 continue;
925
926 sensor = fmd->sensor[i].subdev;
Sylwester Nawrocki4c8f0622013-04-09 11:11:58 -0300927 pdata = v4l2_get_subdev_hostdata(sensor);
928 if (!pdata)
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300929 continue;
930
931 source = NULL;
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300932
Sylwester Nawrocki56bc9112013-02-01 15:00:40 -0300933 switch (pdata->sensor_bus_type) {
934 case FIMC_BUS_TYPE_MIPI_CSI2:
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300935 if (WARN(pdata->mux_id >= CSIS_MAX_ENTITIES,
936 "Wrong CSI channel id: %d\n", pdata->mux_id))
937 return -EINVAL;
938
939 csis = fmd->csis[pdata->mux_id].sd;
940 if (WARN(csis == NULL,
941 "MIPI-CSI interface specified "
942 "but s5p-csis module is not loaded!\n"))
Sylwester Nawrockid12392e2011-10-20 05:15:59 -0300943 return -EINVAL;
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300944
Andrzej Hajda1c9f5bd2012-11-22 12:13:27 -0300945 pad = sensor->entity.num_pads - 1;
Mauro Carvalho Chehab8df00a12015-08-07 08:14:38 -0300946 ret = media_create_pad_link(&sensor->entity, pad,
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300947 &csis->entity, CSIS_PAD_SINK,
948 MEDIA_LNK_FL_IMMUTABLE |
949 MEDIA_LNK_FL_ENABLED);
950 if (ret)
951 return ret;
952
Sylwester Nawrocki969e8772012-12-07 16:40:08 -0300953 v4l2_info(&fmd->v4l2_dev, "created link [%s] => [%s]\n",
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300954 sensor->entity.name, csis->entity.name);
955
Sylwester Nawrocki4af81312012-04-27 05:29:05 -0300956 source = NULL;
Sylwester Nawrocki5d33ee92012-08-16 14:06:41 -0300957 csi_sensors[pdata->mux_id] = sensor;
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300958 break;
959
Sylwester Nawrocki56bc9112013-02-01 15:00:40 -0300960 case FIMC_BUS_TYPE_ITU_601...FIMC_BUS_TYPE_ITU_656:
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300961 source = &sensor->entity;
962 pad = 0;
963 break;
964
965 default:
966 v4l2_err(&fmd->v4l2_dev, "Wrong bus_type: %x\n",
Sylwester Nawrocki56bc9112013-02-01 15:00:40 -0300967 pdata->sensor_bus_type);
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300968 return -EINVAL;
969 }
970 if (source == NULL)
971 continue;
972
Sylwester Nawrockid0da3c32012-05-16 13:08:30 -0300973 link_mask = 1 << fimc_id++;
Sylwester Nawrocki4af81312012-04-27 05:29:05 -0300974 ret = __fimc_md_create_fimc_sink_links(fmd, source, sensor,
Sylwester Nawrockid0da3c32012-05-16 13:08:30 -0300975 pad, link_mask);
Sylwester Nawrockid3953222011-09-01 06:01:08 -0300976 }
Sylwester Nawrocki4af81312012-04-27 05:29:05 -0300977
Sylwester Nawrockia8697ec2012-12-05 13:40:04 -0300978 for (i = 0; i < CSIS_MAX_ENTITIES; i++) {
Sylwester Nawrocki4af81312012-04-27 05:29:05 -0300979 if (fmd->csis[i].sd == NULL)
980 continue;
Sylwester Nawrockif998bb72012-11-27 13:29:48 -0300981
Sylwester Nawrocki4af81312012-04-27 05:29:05 -0300982 source = &fmd->csis[i].sd->entity;
983 pad = CSIS_PAD_SOURCE;
Sylwester Nawrocki5d33ee92012-08-16 14:06:41 -0300984 sensor = csi_sensors[i];
Sylwester Nawrocki4af81312012-04-27 05:29:05 -0300985
Sylwester Nawrockid0da3c32012-05-16 13:08:30 -0300986 link_mask = 1 << fimc_id++;
Sylwester Nawrocki5d33ee92012-08-16 14:06:41 -0300987 ret = __fimc_md_create_fimc_sink_links(fmd, source, sensor,
Sylwester Nawrockid0da3c32012-05-16 13:08:30 -0300988 pad, link_mask);
Sylwester Nawrocki4af81312012-04-27 05:29:05 -0300989 }
990
Sylwester Nawrocki237e0262011-08-24 20:35:30 -0300991 /* Create immutable links between each FIMC's subdev and video node */
992 flags = MEDIA_LNK_FL_IMMUTABLE | MEDIA_LNK_FL_ENABLED;
993 for (i = 0; i < FIMC_MAX_DEVS; i++) {
994 if (!fmd->fimc[i])
995 continue;
Sylwester Nawrockif998bb72012-11-27 13:29:48 -0300996
Sylwester Nawrocki693f5c42012-04-20 18:57:25 -0300997 source = &fmd->fimc[i]->vid_cap.subdev.entity;
Sylwester Nawrockibc7584b2013-05-31 11:37:18 -0300998 sink = &fmd->fimc[i]->vid_cap.ve.vdev.entity;
Sylwester Nawrockif998bb72012-11-27 13:29:48 -0300999
Mauro Carvalho Chehab8df00a12015-08-07 08:14:38 -03001000 ret = media_create_pad_link(source, FIMC_SD_PAD_SOURCE,
Sylwester Nawrocki237e0262011-08-24 20:35:30 -03001001 sink, 0, flags);
1002 if (ret)
1003 break;
1004 }
1005
Sylwester Nawrockif998bb72012-11-27 13:29:48 -03001006 ret = __fimc_md_create_flite_source_links(fmd);
1007 if (ret < 0)
1008 return ret;
1009
1010 if (fmd->use_isp)
1011 ret = __fimc_md_create_fimc_is_links(fmd);
1012
1013 return ret;
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001014}
1015
1016/*
Sylwester Nawrocki056f4f32013-03-21 14:43:17 -03001017 * The peripheral sensor and CAM_BLK (PIXELASYNCMx) clocks management.
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001018 */
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001019static void fimc_md_put_clocks(struct fimc_md *fmd)
1020{
1021 int i = FIMC_MAX_CAMCLKS;
1022
1023 while (--i >= 0) {
Sylwester Nawrocki0e23cbb2013-01-18 15:34:37 -03001024 if (IS_ERR(fmd->camclk[i].clock))
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001025 continue;
1026 clk_put(fmd->camclk[i].clock);
Sylwester Nawrocki0e23cbb2013-01-18 15:34:37 -03001027 fmd->camclk[i].clock = ERR_PTR(-EINVAL);
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001028 }
Sylwester Nawrocki056f4f32013-03-21 14:43:17 -03001029
1030 /* Writeback (PIXELASYNCMx) clocks */
1031 for (i = 0; i < FIMC_MAX_WBCLKS; i++) {
1032 if (IS_ERR(fmd->wbclk[i]))
1033 continue;
1034 clk_put(fmd->wbclk[i]);
1035 fmd->wbclk[i] = ERR_PTR(-EINVAL);
1036 }
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001037}
1038
Sylwester Nawrocki0e23cbb2013-01-18 15:34:37 -03001039static int fimc_md_get_clocks(struct fimc_md *fmd)
1040{
Sylwester Nawrocki49b2f4c52014-04-15 08:35:25 -03001041 struct device *dev = &fmd->pdev->dev;
Sylwester Nawrocki0e23cbb2013-01-18 15:34:37 -03001042 char clk_name[32];
1043 struct clk *clock;
Sylwester Nawrocki044c3722013-07-19 10:05:17 -03001044 int i, ret = 0;
Sylwester Nawrocki0e23cbb2013-01-18 15:34:37 -03001045
1046 for (i = 0; i < FIMC_MAX_CAMCLKS; i++)
1047 fmd->camclk[i].clock = ERR_PTR(-EINVAL);
1048
Sylwester Nawrocki0e23cbb2013-01-18 15:34:37 -03001049 for (i = 0; i < FIMC_MAX_CAMCLKS; i++) {
1050 snprintf(clk_name, sizeof(clk_name), "sclk_cam%u", i);
1051 clock = clk_get(dev, clk_name);
1052
1053 if (IS_ERR(clock)) {
Sylwester Nawrocki49b2f4c52014-04-15 08:35:25 -03001054 dev_err(dev, "Failed to get clock: %s\n", clk_name);
Sylwester Nawrocki0e23cbb2013-01-18 15:34:37 -03001055 ret = PTR_ERR(clock);
1056 break;
1057 }
Sylwester Nawrocki0e23cbb2013-01-18 15:34:37 -03001058 fmd->camclk[i].clock = clock;
1059 }
1060 if (ret)
1061 fimc_md_put_clocks(fmd);
1062
Sylwester Nawrocki056f4f32013-03-21 14:43:17 -03001063 if (!fmd->use_isp)
1064 return 0;
1065 /*
1066 * For now get only PIXELASYNCM1 clock (Writeback B/ISP),
1067 * leave PIXELASYNCM0 out for the LCD Writeback driver.
1068 */
1069 fmd->wbclk[CLK_IDX_WB_A] = ERR_PTR(-EINVAL);
1070
1071 for (i = CLK_IDX_WB_B; i < FIMC_MAX_WBCLKS; i++) {
1072 snprintf(clk_name, sizeof(clk_name), "pxl_async%u", i);
1073 clock = clk_get(dev, clk_name);
1074 if (IS_ERR(clock)) {
1075 v4l2_err(&fmd->v4l2_dev, "Failed to get clock: %s\n",
1076 clk_name);
1077 ret = PTR_ERR(clock);
1078 break;
1079 }
1080 fmd->wbclk[i] = clock;
1081 }
1082 if (ret)
1083 fimc_md_put_clocks(fmd);
1084
Sylwester Nawrocki0e23cbb2013-01-18 15:34:37 -03001085 return ret;
1086}
1087
Sylwester Nawrockid3775fa2013-05-31 10:37:27 -03001088static int __fimc_md_modify_pipeline(struct media_entity *entity, bool enable)
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001089{
Sylwester Nawrocki403dfbe2013-05-31 11:37:22 -03001090 struct exynos_video_entity *ve;
Sylwester Nawrockid3775fa2013-05-31 10:37:27 -03001091 struct fimc_pipeline *p;
Sylwester Nawrocki403dfbe2013-05-31 11:37:22 -03001092 struct video_device *vdev;
Sylwester Nawrockid3775fa2013-05-31 10:37:27 -03001093 int ret;
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001094
Sylwester Nawrockid3775fa2013-05-31 10:37:27 -03001095 vdev = media_entity_to_video_device(entity);
1096 if (vdev->entity.use_count == 0)
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001097 return 0;
1098
Sylwester Nawrocki403dfbe2013-05-31 11:37:22 -03001099 ve = vdev_to_exynos_video_entity(vdev);
Sylwester Nawrockid3775fa2013-05-31 10:37:27 -03001100 p = to_fimc_pipeline(ve->pipe);
1101 /*
1102 * Nothing to do if we are disabling the pipeline, some link
1103 * has been disconnected and p->subdevs array is cleared now.
1104 */
1105 if (!enable && p->subdevs[IDX_SENSOR] == NULL)
1106 return 0;
Sylwester Nawrocki0f735f52012-04-27 09:33:10 -03001107
Sylwester Nawrockid3775fa2013-05-31 10:37:27 -03001108 if (enable)
1109 ret = __fimc_pipeline_open(ve->pipe, entity, true);
1110 else
1111 ret = __fimc_pipeline_close(ve->pipe);
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001112
Sylwester Nawrockid3775fa2013-05-31 10:37:27 -03001113 if (ret == 0 && !enable)
1114 memset(p->subdevs, 0, sizeof(p->subdevs));
1115
1116 return ret;
1117}
1118
Javier Martinez Canillasd10c9892015-08-19 12:35:21 -03001119/* Locking: called with entity->graph_obj.mdev->graph_mutex mutex held. */
Sakari Ailusfd7e5302015-12-16 15:32:25 +02001120static int __fimc_md_modify_pipelines(struct media_entity *entity, bool enable,
1121 struct media_entity_graph *graph)
Sylwester Nawrockid3775fa2013-05-31 10:37:27 -03001122{
1123 struct media_entity *entity_err = entity;
Sylwester Nawrockid3775fa2013-05-31 10:37:27 -03001124 int ret;
1125
1126 /*
1127 * Walk current graph and call the pipeline open/close routine for each
1128 * opened video node that belongs to the graph of entities connected
1129 * through active links. This is needed as we cannot power on/off the
1130 * subdevs in random order.
1131 */
Sakari Ailusfd7e5302015-12-16 15:32:25 +02001132 media_entity_graph_walk_start(graph, entity);
Sylwester Nawrockid3775fa2013-05-31 10:37:27 -03001133
Sakari Ailusfd7e5302015-12-16 15:32:25 +02001134 while ((entity = media_entity_graph_walk_next(graph))) {
Laurent Pinchart45b46872016-02-29 08:45:45 -03001135 if (!is_media_entity_v4l2_video_device(entity))
Sylwester Nawrockid3775fa2013-05-31 10:37:27 -03001136 continue;
1137
1138 ret = __fimc_md_modify_pipeline(entity, enable);
1139
1140 if (ret < 0)
1141 goto err;
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001142 }
Sylwester Nawrocki740ad922012-12-06 10:26:19 -03001143
Sylwester Nawrockid3775fa2013-05-31 10:37:27 -03001144 return 0;
Sylwester Nawrockid3775fa2013-05-31 10:37:27 -03001145
Sakari Ailusfd7e5302015-12-16 15:32:25 +02001146err:
1147 media_entity_graph_walk_start(graph, entity_err);
1148
1149 while ((entity_err = media_entity_graph_walk_next(graph))) {
Laurent Pinchart45b46872016-02-29 08:45:45 -03001150 if (!is_media_entity_v4l2_video_device(entity_err))
Sylwester Nawrockid3775fa2013-05-31 10:37:27 -03001151 continue;
1152
1153 __fimc_md_modify_pipeline(entity_err, !enable);
1154
1155 if (entity_err == entity)
1156 break;
1157 }
1158
1159 return ret;
1160}
1161
1162static int fimc_md_link_notify(struct media_link *link, unsigned int flags,
1163 unsigned int notification)
1164{
Sakari Ailusfd7e5302015-12-16 15:32:25 +02001165 struct media_entity_graph *graph =
1166 &container_of(link->graph_obj.mdev, struct fimc_md,
1167 media_dev)->link_setup_graph;
Sylwester Nawrockid3775fa2013-05-31 10:37:27 -03001168 struct media_entity *sink = link->sink->entity;
1169 int ret = 0;
1170
1171 /* Before link disconnection */
1172 if (notification == MEDIA_DEV_NOTIFY_PRE_LINK_CH) {
Sakari Ailusfd7e5302015-12-16 15:32:25 +02001173 ret = media_entity_graph_walk_init(graph,
1174 link->graph_obj.mdev);
1175 if (ret)
1176 return ret;
Sylwester Nawrockid3775fa2013-05-31 10:37:27 -03001177 if (!(flags & MEDIA_LNK_FL_ENABLED))
Sakari Ailusfd7e5302015-12-16 15:32:25 +02001178 ret = __fimc_md_modify_pipelines(sink, false, graph);
Mauro Carvalho Chehabcdf58a62014-08-26 11:19:18 -03001179#if 0
Sylwester Nawrockid3775fa2013-05-31 10:37:27 -03001180 else
Mauro Carvalho Chehabcdf58a62014-08-26 11:19:18 -03001181 /* TODO: Link state change validation */
1182#endif
Sylwester Nawrockid3775fa2013-05-31 10:37:27 -03001183 /* After link activation */
Sakari Ailusfd7e5302015-12-16 15:32:25 +02001184 } else if (notification == MEDIA_DEV_NOTIFY_POST_LINK_CH) {
1185 if (link->flags & MEDIA_LNK_FL_ENABLED)
1186 ret = __fimc_md_modify_pipelines(sink, true, graph);
1187 media_entity_graph_walk_cleanup(graph);
Sylwester Nawrockid3775fa2013-05-31 10:37:27 -03001188 }
1189
1190 return ret ? -EPIPE : 0;
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001191}
1192
1193static ssize_t fimc_md_sysfs_show(struct device *dev,
1194 struct device_attribute *attr, char *buf)
1195{
1196 struct platform_device *pdev = to_platform_device(dev);
1197 struct fimc_md *fmd = platform_get_drvdata(pdev);
1198
1199 if (fmd->user_subdev_api)
1200 return strlcpy(buf, "Sub-device API (sub-dev)\n", PAGE_SIZE);
1201
1202 return strlcpy(buf, "V4L2 video node only API (vid-dev)\n", PAGE_SIZE);
1203}
1204
1205static ssize_t fimc_md_sysfs_store(struct device *dev,
1206 struct device_attribute *attr,
1207 const char *buf, size_t count)
1208{
1209 struct platform_device *pdev = to_platform_device(dev);
1210 struct fimc_md *fmd = platform_get_drvdata(pdev);
1211 bool subdev_api;
1212 int i;
1213
1214 if (!strcmp(buf, "vid-dev\n"))
1215 subdev_api = false;
1216 else if (!strcmp(buf, "sub-dev\n"))
1217 subdev_api = true;
1218 else
1219 return count;
1220
1221 fmd->user_subdev_api = subdev_api;
1222 for (i = 0; i < FIMC_MAX_DEVS; i++)
1223 if (fmd->fimc[i])
1224 fmd->fimc[i]->vid_cap.user_subdev_api = subdev_api;
1225 return count;
1226}
1227/*
1228 * This device attribute is to select video pipeline configuration method.
1229 * There are following valid values:
1230 * vid-dev - for V4L2 video node API only, subdevice will be configured
1231 * by the host driver.
1232 * sub-dev - for media controller API, subdevs must be configured in user
1233 * space before starting streaming.
1234 */
1235static DEVICE_ATTR(subdev_conf_mode, S_IWUSR | S_IRUGO,
1236 fimc_md_sysfs_show, fimc_md_sysfs_store);
1237
Sylwester Nawrocki41638512013-03-08 10:41:47 -03001238static int fimc_md_get_pinctrl(struct fimc_md *fmd)
1239{
1240 struct device *dev = &fmd->pdev->dev;
1241 struct fimc_pinctrl *pctl = &fmd->pinctl;
1242
1243 pctl->pinctrl = devm_pinctrl_get(dev);
1244 if (IS_ERR(pctl->pinctrl))
1245 return PTR_ERR(pctl->pinctrl);
1246
1247 pctl->state_default = pinctrl_lookup_state(pctl->pinctrl,
1248 PINCTRL_STATE_DEFAULT);
1249 if (IS_ERR(pctl->state_default))
1250 return PTR_ERR(pctl->state_default);
1251
1252 pctl->state_idle = pinctrl_lookup_state(pctl->pinctrl,
1253 PINCTRL_STATE_IDLE);
1254 return 0;
1255}
1256
Sylwester Nawrockid3f5e0c2013-12-20 18:53:53 -03001257static int cam_clk_prepare(struct clk_hw *hw)
1258{
1259 struct cam_clk *camclk = to_cam_clk(hw);
1260 int ret;
1261
1262 if (camclk->fmd->pmf == NULL)
1263 return -ENODEV;
1264
1265 ret = pm_runtime_get_sync(camclk->fmd->pmf);
1266 return ret < 0 ? ret : 0;
1267}
1268
1269static void cam_clk_unprepare(struct clk_hw *hw)
1270{
1271 struct cam_clk *camclk = to_cam_clk(hw);
1272
1273 if (camclk->fmd->pmf == NULL)
1274 return;
1275
1276 pm_runtime_put_sync(camclk->fmd->pmf);
1277}
1278
1279static const struct clk_ops cam_clk_ops = {
1280 .prepare = cam_clk_prepare,
1281 .unprepare = cam_clk_unprepare,
1282};
1283
1284static void fimc_md_unregister_clk_provider(struct fimc_md *fmd)
1285{
1286 struct cam_clk_provider *cp = &fmd->clk_provider;
1287 unsigned int i;
1288
1289 if (cp->of_node)
1290 of_clk_del_provider(cp->of_node);
1291
1292 for (i = 0; i < cp->num_clocks; i++)
1293 clk_unregister(cp->clks[i]);
1294}
1295
1296static int fimc_md_register_clk_provider(struct fimc_md *fmd)
1297{
1298 struct cam_clk_provider *cp = &fmd->clk_provider;
1299 struct device *dev = &fmd->pdev->dev;
1300 int i, ret;
1301
1302 for (i = 0; i < FIMC_MAX_CAMCLKS; i++) {
1303 struct cam_clk *camclk = &cp->camclk[i];
1304 struct clk_init_data init;
1305 const char *p_name;
1306
1307 ret = of_property_read_string_index(dev->of_node,
1308 "clock-output-names", i, &init.name);
1309 if (ret < 0)
1310 break;
1311
1312 p_name = __clk_get_name(fmd->camclk[i].clock);
1313
1314 /* It's safe since clk_register() will duplicate the string. */
1315 init.parent_names = &p_name;
1316 init.num_parents = 1;
1317 init.ops = &cam_clk_ops;
1318 init.flags = CLK_SET_RATE_PARENT;
1319 camclk->hw.init = &init;
1320 camclk->fmd = fmd;
1321
1322 cp->clks[i] = clk_register(NULL, &camclk->hw);
1323 if (IS_ERR(cp->clks[i])) {
1324 dev_err(dev, "failed to register clock: %s (%ld)\n",
1325 init.name, PTR_ERR(cp->clks[i]));
1326 ret = PTR_ERR(cp->clks[i]);
1327 goto err;
1328 }
1329 cp->num_clocks++;
1330 }
1331
1332 if (cp->num_clocks == 0) {
1333 dev_warn(dev, "clk provider not registered\n");
1334 return 0;
1335 }
1336
1337 cp->clk_data.clks = cp->clks;
1338 cp->clk_data.clk_num = cp->num_clocks;
1339 cp->of_node = dev->of_node;
1340 ret = of_clk_add_provider(dev->of_node, of_clk_src_onecell_get,
1341 &cp->clk_data);
1342 if (ret == 0)
1343 return 0;
1344err:
1345 fimc_md_unregister_clk_provider(fmd);
1346 return ret;
1347}
Sylwester Nawrockid3f5e0c2013-12-20 18:53:53 -03001348
Sylwester Nawrockifa91f102014-02-24 11:44:50 -03001349static int subdev_notifier_bound(struct v4l2_async_notifier *notifier,
1350 struct v4l2_subdev *subdev,
1351 struct v4l2_async_subdev *asd)
1352{
1353 struct fimc_md *fmd = notifier_to_fimc_md(notifier);
1354 struct fimc_sensor_info *si = NULL;
1355 int i;
1356
1357 /* Find platform data for this sensor subdev */
1358 for (i = 0; i < ARRAY_SIZE(fmd->sensor); i++)
1359 if (fmd->sensor[i].asd.match.of.node == subdev->dev->of_node)
1360 si = &fmd->sensor[i];
1361
1362 if (si == NULL)
1363 return -EINVAL;
1364
1365 v4l2_set_subdev_hostdata(subdev, &si->pdata);
1366
1367 if (si->pdata.fimc_bus_type == FIMC_BUS_TYPE_ISP_WRITEBACK)
1368 subdev->grp_id = GRP_ID_FIMC_IS_SENSOR;
1369 else
1370 subdev->grp_id = GRP_ID_SENSOR;
1371
1372 si->subdev = subdev;
1373
1374 v4l2_info(&fmd->v4l2_dev, "Registered sensor subdevice: %s (%d)\n",
1375 subdev->name, fmd->num_sensors);
1376
1377 fmd->num_sensors++;
1378
1379 return 0;
1380}
1381
1382static int subdev_notifier_complete(struct v4l2_async_notifier *notifier)
1383{
1384 struct fimc_md *fmd = notifier_to_fimc_md(notifier);
1385 int ret;
1386
1387 mutex_lock(&fmd->media_dev.graph_mutex);
1388
1389 ret = fimc_md_create_links(fmd);
1390 if (ret < 0)
1391 goto unlock;
1392
1393 ret = v4l2_device_register_subdev_nodes(&fmd->v4l2_dev);
1394unlock:
1395 mutex_unlock(&fmd->media_dev.graph_mutex);
Javier Martinez Canillas9832e152015-12-11 20:57:08 -02001396 if (ret < 0)
1397 return ret;
1398
1399 return media_device_register(&fmd->media_dev);
Sylwester Nawrockifa91f102014-02-24 11:44:50 -03001400}
1401
Sylwester Nawrockiecd9acb2012-03-21 09:58:09 -03001402static int fimc_md_probe(struct platform_device *pdev)
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001403{
Sylwester Nawrockie2985a22013-03-08 12:59:33 -03001404 struct device *dev = &pdev->dev;
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001405 struct v4l2_device *v4l2_dev;
1406 struct fimc_md *fmd;
1407 int ret;
1408
Sylwester Nawrockie2985a22013-03-08 12:59:33 -03001409 fmd = devm_kzalloc(dev, sizeof(*fmd), GFP_KERNEL);
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001410 if (!fmd)
1411 return -ENOMEM;
1412
1413 spin_lock_init(&fmd->slock);
Sylwester Nawrocki403dfbe2013-05-31 11:37:22 -03001414 INIT_LIST_HEAD(&fmd->pipelines);
Sylwester Nawrocki49b2f4c52014-04-15 08:35:25 -03001415 fmd->pdev = pdev;
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001416
1417 strlcpy(fmd->media_dev.model, "SAMSUNG S5P FIMC",
1418 sizeof(fmd->media_dev.model));
1419 fmd->media_dev.link_notify = fimc_md_link_notify;
Sylwester Nawrockie2985a22013-03-08 12:59:33 -03001420 fmd->media_dev.dev = dev;
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001421
1422 v4l2_dev = &fmd->v4l2_dev;
1423 v4l2_dev->mdev = &fmd->media_dev;
Sylwester Nawrockie1d72f42011-06-10 15:36:58 -03001424 v4l2_dev->notify = fimc_sensor_notify;
Sylwester Nawrockie2985a22013-03-08 12:59:33 -03001425 strlcpy(v4l2_dev->name, "s5p-fimc-md", sizeof(v4l2_dev->name));
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001426
Sylwester Nawrockie781bbe32013-03-21 14:49:16 -03001427 fmd->use_isp = fimc_md_is_isp_available(dev->of_node);
Sylwester Nawrocki49b2f4c52014-04-15 08:35:25 -03001428 fmd->user_subdev_api = true;
Sylwester Nawrockie781bbe32013-03-21 14:49:16 -03001429
Mauro Carvalho Chehab2e7508e2015-12-28 09:24:23 -02001430 media_device_init(&fmd->media_dev);
1431
Sylwester Nawrockie2985a22013-03-08 12:59:33 -03001432 ret = v4l2_device_register(dev, &fmd->v4l2_dev);
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001433 if (ret < 0) {
1434 v4l2_err(v4l2_dev, "Failed to register v4l2_device: %d\n", ret);
Sylwester Nawrocki6d91a512012-01-30 11:37:59 -03001435 return ret;
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001436 }
Sylwester Nawrockid3f5e0c2013-12-20 18:53:53 -03001437
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001438 ret = fimc_md_get_clocks(fmd);
1439 if (ret)
Sylwester Nawrockifa91f102014-02-24 11:44:50 -03001440 goto err_md;
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001441
Sylwester Nawrocki41638512013-03-08 10:41:47 -03001442 ret = fimc_md_get_pinctrl(fmd);
1443 if (ret < 0) {
1444 if (ret != EPROBE_DEFER)
1445 dev_err(dev, "Failed to get pinctrl: %d\n", ret);
Sylwester Nawrockifa91f102014-02-24 11:44:50 -03001446 goto err_clk;
Sylwester Nawrocki41638512013-03-08 10:41:47 -03001447 }
1448
Sylwester Nawrockifa91f102014-02-24 11:44:50 -03001449 platform_set_drvdata(pdev, fmd);
1450
1451 /* Protect the media graph while we're registering entities */
1452 mutex_lock(&fmd->media_dev.graph_mutex);
1453
Sylwester Nawrocki49b2f4c52014-04-15 08:35:25 -03001454 ret = fimc_md_register_platform_entities(fmd, dev->of_node);
Sylwester Nawrockifa91f102014-02-24 11:44:50 -03001455 if (ret) {
1456 mutex_unlock(&fmd->media_dev.graph_mutex);
1457 goto err_clk;
1458 }
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001459
Sylwester Nawrocki49b2f4c52014-04-15 08:35:25 -03001460 ret = fimc_md_register_sensor_entities(fmd);
1461 if (ret) {
1462 mutex_unlock(&fmd->media_dev.graph_mutex);
1463 goto err_m_ent;
Sylwester Nawrocki5cbf6f162011-10-07 07:40:00 -03001464 }
Sylwester Nawrockie2985a22013-03-08 12:59:33 -03001465
Sylwester Nawrockifa91f102014-02-24 11:44:50 -03001466 mutex_unlock(&fmd->media_dev.graph_mutex);
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001467
1468 ret = device_create_file(&pdev->dev, &dev_attr_subdev_conf_mode);
Sylwester Nawrocki693f5c42012-04-20 18:57:25 -03001469 if (ret)
Sylwester Nawrockifa91f102014-02-24 11:44:50 -03001470 goto err_m_ent;
1471 /*
1472 * FIMC platform devices need to be registered before the sclk_cam
1473 * clocks provider, as one of these devices needs to be activated
1474 * to enable the clock.
1475 */
1476 ret = fimc_md_register_clk_provider(fmd);
1477 if (ret < 0) {
1478 v4l2_err(v4l2_dev, "clock provider registration failed\n");
1479 goto err_attr;
1480 }
Sylwester Nawrocki693f5c42012-04-20 18:57:25 -03001481
Sylwester Nawrockifa91f102014-02-24 11:44:50 -03001482 if (fmd->num_sensors > 0) {
1483 fmd->subdev_notifier.subdevs = fmd->async_subdevs;
1484 fmd->subdev_notifier.num_subdevs = fmd->num_sensors;
1485 fmd->subdev_notifier.bound = subdev_notifier_bound;
1486 fmd->subdev_notifier.complete = subdev_notifier_complete;
1487 fmd->num_sensors = 0;
1488
1489 ret = v4l2_async_notifier_register(&fmd->v4l2_dev,
1490 &fmd->subdev_notifier);
1491 if (ret)
1492 goto err_clk_p;
1493 }
1494
Sylwester Nawrocki693f5c42012-04-20 18:57:25 -03001495 return 0;
1496
Sylwester Nawrockifa91f102014-02-24 11:44:50 -03001497err_clk_p:
1498 fimc_md_unregister_clk_provider(fmd);
1499err_attr:
1500 device_remove_file(&pdev->dev, &dev_attr_subdev_conf_mode);
Sylwester Nawrocki693f5c42012-04-20 18:57:25 -03001501err_clk:
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001502 fimc_md_put_clocks(fmd);
Sylwester Nawrockifa91f102014-02-24 11:44:50 -03001503err_m_ent:
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001504 fimc_md_unregister_entities(fmd);
Sylwester Nawrocki693f5c42012-04-20 18:57:25 -03001505err_md:
Javier Martinez Canillas9832e152015-12-11 20:57:08 -02001506 media_device_cleanup(&fmd->media_dev);
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001507 v4l2_device_unregister(&fmd->v4l2_dev);
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001508 return ret;
1509}
1510
Greg Kroah-Hartman4c62e972012-12-21 13:17:53 -08001511static int fimc_md_remove(struct platform_device *pdev)
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001512{
1513 struct fimc_md *fmd = platform_get_drvdata(pdev);
1514
1515 if (!fmd)
1516 return 0;
Sylwester Nawrockib74bee12013-08-09 14:23:53 -03001517
Sylwester Nawrockid3f5e0c2013-12-20 18:53:53 -03001518 fimc_md_unregister_clk_provider(fmd);
Sylwester Nawrockifa91f102014-02-24 11:44:50 -03001519 v4l2_async_notifier_unregister(&fmd->subdev_notifier);
1520
Sylwester Nawrockib74bee12013-08-09 14:23:53 -03001521 v4l2_device_unregister(&fmd->v4l2_dev);
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001522 device_remove_file(&pdev->dev, &dev_attr_subdev_conf_mode);
1523 fimc_md_unregister_entities(fmd);
Sylwester Nawrocki403dfbe2013-05-31 11:37:22 -03001524 fimc_md_pipelines_free(fmd);
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001525 media_device_unregister(&fmd->media_dev);
Javier Martinez Canillas9832e152015-12-11 20:57:08 -02001526 media_device_cleanup(&fmd->media_dev);
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001527 fimc_md_put_clocks(fmd);
Sylwester Nawrockifa91f102014-02-24 11:44:50 -03001528
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001529 return 0;
1530}
1531
Krzysztof Kozlowskic42639d2015-05-01 12:51:01 -03001532static const struct platform_device_id fimc_driver_ids[] __always_unused = {
Sylwester Nawrockie2985a22013-03-08 12:59:33 -03001533 { .name = "s5p-fimc-md" },
1534 { },
1535};
1536MODULE_DEVICE_TABLE(platform, fimc_driver_ids);
1537
1538static const struct of_device_id fimc_md_of_match[] = {
1539 { .compatible = "samsung,fimc" },
1540 { },
1541};
1542MODULE_DEVICE_TABLE(of, fimc_md_of_match);
1543
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001544static struct platform_driver fimc_md_driver = {
1545 .probe = fimc_md_probe,
Greg Kroah-Hartman4c62e972012-12-21 13:17:53 -08001546 .remove = fimc_md_remove,
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001547 .driver = {
Sylwester Nawrockie2985a22013-03-08 12:59:33 -03001548 .of_match_table = of_match_ptr(fimc_md_of_match),
1549 .name = "s5p-fimc-md",
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001550 }
1551};
1552
Sachin Kamat7e566be2012-05-26 11:11:54 -03001553static int __init fimc_md_init(void)
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001554{
1555 int ret;
Sylwester Nawrockiecd9acb2012-03-21 09:58:09 -03001556
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001557 request_module("s5p-csis");
1558 ret = fimc_register_driver();
1559 if (ret)
1560 return ret;
Sylwester Nawrockiecd9acb2012-03-21 09:58:09 -03001561
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001562 return platform_driver_register(&fimc_md_driver);
1563}
Sachin Kamat7e566be2012-05-26 11:11:54 -03001564
1565static void __exit fimc_md_exit(void)
Sylwester Nawrockid3953222011-09-01 06:01:08 -03001566{
1567 platform_driver_unregister(&fimc_md_driver);
1568 fimc_unregister_driver();
1569}
1570
1571module_init(fimc_md_init);
1572module_exit(fimc_md_exit);
1573
1574MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>");
1575MODULE_DESCRIPTION("S5P FIMC camera host interface/video postprocessor driver");
1576MODULE_LICENSE("GPL");
1577MODULE_VERSION("2.0.1");