diff options
Diffstat (limited to 'drivers/media/video/s5p-fimc/fimc-mdevice.c')
| -rw-r--r-- | drivers/media/video/s5p-fimc/fimc-mdevice.c | 1037 |
1 files changed, 0 insertions, 1037 deletions
diff --git a/drivers/media/video/s5p-fimc/fimc-mdevice.c b/drivers/media/video/s5p-fimc/fimc-mdevice.c deleted file mode 100644 index e65bb28..0000000 --- a/drivers/media/video/s5p-fimc/fimc-mdevice.c +++ /dev/null @@ -1,1037 +0,0 @@ -/* - * S5P/EXYNOS4 SoC series camera host interface media device driver - * - * Copyright (C) 2011 Samsung Electronics Co., Ltd. - * Contact: Sylwester Nawrocki, <s.nawrocki@samsung.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published - * by the Free Software Foundation, either version 2 of the License, - * or (at your option) any later version. - */ - -#include <linux/bug.h> -#include <linux/device.h> -#include <linux/errno.h> -#include <linux/i2c.h> -#include <linux/kernel.h> -#include <linux/list.h> -#include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/pm_runtime.h> -#include <linux/types.h> -#include <linux/slab.h> -#include <media/v4l2-ctrls.h> -#include <media/media-device.h> - -#include "fimc-core.h" -#include "fimc-lite.h" -#include "fimc-mdevice.h" -#include "mipi-csis.h" - -static int __fimc_md_set_camclk(struct fimc_md *fmd, - struct fimc_sensor_info *s_info, - bool on); -/** - * fimc_pipeline_prepare - update pipeline information with subdevice pointers - * @fimc: fimc device terminating the pipeline - * - * Caller holds the graph mutex. - */ -void fimc_pipeline_prepare(struct fimc_pipeline *p, struct media_entity *me) -{ - struct media_pad *pad = &me->pads[0]; - struct v4l2_subdev *sd; - int i; - - for (i = 0; i < IDX_MAX; i++) - p->subdevs[i] = NULL; - - while (1) { - if (!(pad->flags & MEDIA_PAD_FL_SINK)) - break; - - /* source pad */ - pad = media_entity_remote_source(pad); - if (pad == NULL || - media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV) - break; - - sd = media_entity_to_v4l2_subdev(pad->entity); - - switch (sd->grp_id) { - case SENSOR_GROUP_ID: - p->subdevs[IDX_SENSOR] = sd; - break; - case CSIS_GROUP_ID: - p->subdevs[IDX_CSIS] = sd; - break; - case FLITE_GROUP_ID: - p->subdevs[IDX_FLITE] = sd; - break; - case FIMC_GROUP_ID: - /* No need to control FIMC subdev through subdev ops */ - break; - default: - pr_warn("%s: Unknown subdev grp_id: %#x\n", - __func__, sd->grp_id); - } - /* sink pad */ - pad = &sd->entity.pads[0]; - } -} - -/** - * __subdev_set_power - change power state of a single subdev - * @sd: subdevice to change power state for - * @on: 1 to enable power or 0 to disable - * - * Return result of s_power subdev operation or -ENXIO if sd argument - * is NULL. Return 0 if the subdevice does not implement s_power. - */ -static int __subdev_set_power(struct v4l2_subdev *sd, int on) -{ - int *use_count; - int ret; - - if (sd == NULL) - return -ENXIO; - - use_count = &sd->entity.use_count; - if (on && (*use_count)++ > 0) - return 0; - else if (!on && (*use_count == 0 || --(*use_count) > 0)) - return 0; - ret = v4l2_subdev_call(sd, core, s_power, on); - - return ret != -ENOIOCTLCMD ? ret : 0; -} - -/** - * fimc_pipeline_s_power - change power state of all pipeline subdevs - * @fimc: fimc device terminating the pipeline - * @state: true to power on, false to power off - * - * Needs to be called with the graph mutex held. - */ -int fimc_pipeline_s_power(struct fimc_pipeline *p, bool state) -{ - unsigned int i; - int ret; - - if (p->subdevs[IDX_SENSOR] == NULL) - return -ENXIO; - - for (i = 0; i < IDX_MAX; i++) { - unsigned int idx = state ? (IDX_MAX - 1) - i : i; - - ret = __subdev_set_power(p->subdevs[idx], state); - if (ret < 0 && ret != -ENXIO) - return ret; - } - - return 0; -} - -/** - * __fimc_pipeline_initialize - update the pipeline information, enable power - * of all pipeline subdevs and the sensor clock - * @me: media entity to start graph walk with - * @prep: true to acquire sensor (and csis) subdevs - * - * This function must be called with the graph mutex held. - */ -static int __fimc_pipeline_initialize(struct fimc_pipeline *p, - struct media_entity *me, bool prep) -{ - int ret; - - if (prep) - fimc_pipeline_prepare(p, me); - - if (p->subdevs[IDX_SENSOR] == NULL) - return -EINVAL; - - ret = fimc_md_set_camclk(p->subdevs[IDX_SENSOR], true); - if (ret) - return ret; - - return fimc_pipeline_s_power(p, 1); -} - -int fimc_pipeline_initialize(struct fimc_pipeline *p, struct media_entity *me, - bool prep) -{ - int ret; - - mutex_lock(&me->parent->graph_mutex); - ret = __fimc_pipeline_initialize(p, me, prep); - mutex_unlock(&me->parent->graph_mutex); - - return ret; -} -EXPORT_SYMBOL_GPL(fimc_pipeline_initialize); - -/** - * __fimc_pipeline_shutdown - disable the sensor clock and pipeline power - * @fimc: fimc device terminating the pipeline - * - * Disable power of all subdevs in the pipeline and turn off the external - * sensor clock. - * Called with the graph mutex held. - */ -static int __fimc_pipeline_shutdown(struct fimc_pipeline *p) -{ - int ret = 0; - - if (p->subdevs[IDX_SENSOR]) { - ret = fimc_pipeline_s_power(p, 0); - fimc_md_set_camclk(p->subdevs[IDX_SENSOR], false); - } - return ret == -ENXIO ? 0 : ret; -} - -int fimc_pipeline_shutdown(struct fimc_pipeline *p) -{ - struct media_entity *me; - int ret; - - if (!p || !p->subdevs[IDX_SENSOR]) - return -EINVAL; - - me = &p->subdevs[IDX_SENSOR]->entity; - mutex_lock(&me->parent->graph_mutex); - ret = __fimc_pipeline_shutdown(p); - mutex_unlock(&me->parent->graph_mutex); - - return ret; -} -EXPORT_SYMBOL_GPL(fimc_pipeline_shutdown); - -/** - * fimc_pipeline_s_stream - invoke s_stream on pipeline subdevs - * @pipeline: video pipeline structure - * @on: passed as the s_stream call argument - */ -int fimc_pipeline_s_stream(struct fimc_pipeline *p, bool on) -{ - int i, ret; - - if (p->subdevs[IDX_SENSOR] == NULL) - return -ENODEV; - - for (i = 0; i < IDX_MAX; i++) { - unsigned int idx = on ? (IDX_MAX - 1) - i : i; - - ret = v4l2_subdev_call(p->subdevs[idx], video, s_stream, on); - - if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV) - return ret; - } - - return 0; - -} -EXPORT_SYMBOL_GPL(fimc_pipeline_s_stream); - -/* - * Sensor subdevice helper functions - */ -static struct v4l2_subdev *fimc_md_register_sensor(struct fimc_md *fmd, - struct fimc_sensor_info *s_info) -{ - struct i2c_adapter *adapter; - struct v4l2_subdev *sd = NULL; - - if (!s_info || !fmd) - return NULL; - - adapter = i2c_get_adapter(s_info->pdata->i2c_bus_num); - if (!adapter) { - v4l2_warn(&fmd->v4l2_dev, - "Failed to get I2C adapter %d, deferring probe\n", - s_info->pdata->i2c_bus_num); - return ERR_PTR(-EPROBE_DEFER); - } - sd = v4l2_i2c_new_subdev_board(&fmd->v4l2_dev, adapter, - s_info->pdata->board_info, NULL); - if (IS_ERR_OR_NULL(sd)) { - i2c_put_adapter(adapter); - v4l2_warn(&fmd->v4l2_dev, - "Failed to acquire subdev %s, deferring probe\n", - s_info->pdata->board_info->type); - return ERR_PTR(-EPROBE_DEFER); - } - v4l2_set_subdev_hostdata(sd, s_info); - sd->grp_id = SENSOR_GROUP_ID; - - v4l2_info(&fmd->v4l2_dev, "Registered sensor subdevice %s\n", - s_info->pdata->board_info->type); - return sd; -} - -static void fimc_md_unregister_sensor(struct v4l2_subdev *sd) -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - struct i2c_adapter *adapter; - - if (!client) - return; - v4l2_device_unregister_subdev(sd); - adapter = client->adapter; - i2c_unregister_device(client); - if (adapter) - i2c_put_adapter(adapter); -} - -static int fimc_md_register_sensor_entities(struct fimc_md *fmd) -{ - struct s5p_platform_fimc *pdata = fmd->pdev->dev.platform_data; - struct fimc_dev *fd = NULL; - int num_clients, ret, i; - - /* - * Runtime resume one of the FIMC entities to make sure - * the sclk_cam clocks are not globally disabled. - */ - for (i = 0; !fd && i < ARRAY_SIZE(fmd->fimc); i++) - if (fmd->fimc[i]) - fd = fmd->fimc[i]; - if (!fd) - return -ENXIO; - ret = pm_runtime_get_sync(&fd->pdev->dev); - if (ret < 0) - return ret; - - WARN_ON(pdata->num_clients > ARRAY_SIZE(fmd->sensor)); - num_clients = min_t(u32, pdata->num_clients, ARRAY_SIZE(fmd->sensor)); - - fmd->num_sensors = num_clients; - for (i = 0; i < num_clients; i++) { - struct v4l2_subdev *sd; - - fmd->sensor[i].pdata = &pdata->isp_info[i]; - ret = __fimc_md_set_camclk(fmd, &fmd->sensor[i], true); - if (ret) - break; - sd = fimc_md_register_sensor(fmd, &fmd->sensor[i]); - ret = __fimc_md_set_camclk(fmd, &fmd->sensor[i], false); - - if (!IS_ERR(sd)) { - fmd->sensor[i].subdev = sd; - } else { - fmd->sensor[i].subdev = NULL; - ret = PTR_ERR(sd); - break; - } - if (ret) - break; - } - pm_runtime_put(&fd->pdev->dev); - return ret; -} - -/* - * MIPI CSIS and FIMC platform devices registration. - */ -static int fimc_register_callback(struct device *dev, void *p) -{ - struct fimc_dev *fimc = dev_get_drvdata(dev); - struct v4l2_subdev *sd = &fimc->vid_cap.subdev; - struct fimc_md *fmd = p; - int ret = 0; - - if (!fimc || !fimc->pdev) - return 0; - - if (fimc->pdev->id < 0 || fimc->pdev->id >= FIMC_MAX_DEVS) - return 0; - - fmd->fimc[fimc->pdev->id] = fimc; - sd->grp_id = FIMC_GROUP_ID; - - ret = v4l2_device_register_subdev(&fmd->v4l2_dev, sd); - if (ret) { - v4l2_err(&fmd->v4l2_dev, "Failed to register FIMC.%d (%d)\n", - fimc->id, ret); - } - - return ret; -} - -static int fimc_lite_register_callback(struct device *dev, void *p) -{ - struct fimc_lite *fimc = dev_get_drvdata(dev); - struct v4l2_subdev *sd = &fimc->subdev; - struct fimc_md *fmd = p; - int ret; - - if (fimc == NULL) - return 0; - - if (fimc->index >= FIMC_LITE_MAX_DEVS) - return 0; - - fmd->fimc_lite[fimc->index] = fimc; - sd->grp_id = FLITE_GROUP_ID; - - ret = v4l2_device_register_subdev(&fmd->v4l2_dev, sd); - if (ret) { - v4l2_err(&fmd->v4l2_dev, - "Failed to register FIMC-LITE.%d (%d)\n", - fimc->index, ret); - } - return ret; -} - -static int csis_register_callback(struct device *dev, void *p) -{ - struct v4l2_subdev *sd = dev_get_drvdata(dev); - struct platform_device *pdev; - struct fimc_md *fmd = p; - int id, ret; - - if (!sd) - return 0; - pdev = v4l2_get_subdevdata(sd); - if (!pdev || pdev->id < 0 || pdev->id >= CSIS_MAX_ENTITIES) - return 0; - v4l2_info(sd, "csis%d sd: %s\n", pdev->id, sd->name); - - id = pdev->id < 0 ? 0 : pdev->id; - fmd->csis[id].sd = sd; - sd->grp_id = CSIS_GROUP_ID; - ret = v4l2_device_register_subdev(&fmd->v4l2_dev, sd); - if (ret) - v4l2_err(&fmd->v4l2_dev, - "Failed to register CSIS subdevice: %d\n", ret); - return ret; -} - -/** - * fimc_md_register_platform_entities - register FIMC and CSIS media entities - */ -static int fimc_md_register_platform_entities(struct fimc_md *fmd) -{ - struct s5p_platform_fimc *pdata = fmd->pdev->dev.platform_data; - struct device_driver *driver; - int ret, i; - - driver = driver_find(FIMC_MODULE_NAME, &platform_bus_type); - if (!driver) { - v4l2_warn(&fmd->v4l2_dev, - "%s driver not found, deffering probe\n", - FIMC_MODULE_NAME); - return -EPROBE_DEFER; - } - - ret = driver_for_each_device(driver, NULL, fmd, - fimc_register_callback); - if (ret) - return ret; - - driver = driver_find(FIMC_LITE_DRV_NAME, &platform_bus_type); - if (driver && try_module_get(driver->owner)) { - ret = driver_for_each_device(driver, NULL, fmd, - fimc_lite_register_callback); - if (ret) - return ret; - module_put(driver->owner); - } - /* - * Check if there is any sensor on the MIPI-CSI2 bus and - * if not skip the s5p-csis module loading. - */ - if (pdata == NULL) - return 0; - for (i = 0; i < pdata->num_clients; i++) { - if (pdata->isp_info[i].bus_type == FIMC_MIPI_CSI2) { - ret = 1; - break; - } - } - if (!ret) - return 0; - - driver = driver_find(CSIS_DRIVER_NAME, &platform_bus_type); - if (!driver || !try_module_get(driver->owner)) { - v4l2_warn(&fmd->v4l2_dev, - "%s driver not found, deffering probe\n", - CSIS_DRIVER_NAME); - return -EPROBE_DEFER; - } - - return driver_for_each_device(driver, NULL, fmd, - csis_register_callback); -} - -static void fimc_md_unregister_entities(struct fimc_md *fmd) -{ - int i; - - for (i = 0; i < FIMC_MAX_DEVS; i++) { - if (fmd->fimc[i] == NULL) - continue; - v4l2_device_unregister_subdev(&fmd->fimc[i]->vid_cap.subdev); - fmd->fimc[i] = NULL; - } - for (i = 0; i < FIMC_LITE_MAX_DEVS; i++) { - if (fmd->fimc_lite[i] == NULL) - continue; - v4l2_device_unregister_subdev(&fmd->fimc_lite[i]->subdev); - fmd->fimc_lite[i] = NULL; - } - for (i = 0; i < CSIS_MAX_ENTITIES; i++) { - if (fmd->csis[i].sd == NULL) - continue; - v4l2_device_unregister_subdev(fmd->csis[i].sd); - module_put(fmd->csis[i].sd->owner); - fmd->csis[i].sd = NULL; - } - for (i = 0; i < fmd->num_sensors; i++) { - if (fmd->sensor[i].subdev == NULL) - continue; - fimc_md_unregister_sensor(fmd->sensor[i].subdev); - fmd->sensor[i].subdev = NULL; - } -} - -/** - * __fimc_md_create_fimc_links - create links to all FIMC entities - * @fmd: fimc media device - * @source: the source entity to create links to all fimc entities from - * @sensor: sensor subdev linked to FIMC[fimc_id] entity, may be null - * @pad: the source entity pad index - * @link_mask: bitmask of the fimc devices for which link should be enabled - */ -static int __fimc_md_create_fimc_sink_links(struct fimc_md *fmd, - struct media_entity *source, - struct v4l2_subdev *sensor, - int pad, int link_mask) -{ - struct fimc_sensor_info *s_info; - struct media_entity *sink; - unsigned int flags = 0; - int ret, i; - - for (i = 0; i < FIMC_MAX_DEVS; i++) { - if (!fmd->fimc[i]) - continue; - /* - * Some FIMC variants are not fitted with camera capture - * interface. Skip creating a link from sensor for those. - */ - if (!fmd->fimc[i]->variant->has_cam_if) - continue; - - flags = ((1 << i) & link_mask) ? MEDIA_LNK_FL_ENABLED : 0; - - sink = &fmd->fimc[i]->vid_cap.subdev.entity; - ret = media_entity_create_link(source, pad, sink, - FIMC_SD_PAD_SINK, flags); - if (ret) - return ret; - - /* Notify FIMC capture subdev entity */ - ret = media_entity_call(sink, link_setup, &sink->pads[0], - &source->pads[pad], flags); - if (ret) - break; - - v4l2_info(&fmd->v4l2_dev, "created link [%s] %c> [%s]", - source->name, flags ? '=' : '-', sink->name); - - if (flags == 0 || sensor == NULL) - continue; - s_info = v4l2_get_subdev_hostdata(sensor); - if (!WARN_ON(s_info == NULL)) { - unsigned long irq_flags; - spin_lock_irqsave(&fmd->slock, irq_flags); - s_info->host = fmd->fimc[i]; - spin_unlock_irqrestore(&fmd->slock, irq_flags); - } - } - - for (i = 0; i < FIMC_LITE_MAX_DEVS; i++) { - if (!fmd->fimc_lite[i]) - continue; - - if (link_mask & (1 << (i + FIMC_MAX_DEVS))) - flags = MEDIA_LNK_FL_ENABLED; - else - flags = 0; - - sink = &fmd->fimc_lite[i]->subdev.entity; - ret = media_entity_create_link(source, pad, sink, - FLITE_SD_PAD_SINK, flags); - if (ret) - return ret; - - /* Notify FIMC-LITE subdev entity */ - ret = media_entity_call(sink, link_setup, &sink->pads[0], - &source->pads[pad], flags); - if (ret) - break; - - v4l2_info(&fmd->v4l2_dev, "created link [%s] %c> [%s]", - source->name, flags ? '=' : '-', sink->name); - } - return 0; -} - -/* Create links from FIMC-LITE source pads to other entities */ -static int __fimc_md_create_flite_source_links(struct fimc_md *fmd) -{ - struct media_entity *source, *sink; - unsigned int flags = MEDIA_LNK_FL_ENABLED; - int i, ret; - - for (i = 0; i < FIMC_LITE_MAX_DEVS; i++) { - struct fimc_lite *fimc = fmd->fimc_lite[i]; - if (fimc == NULL) - continue; - source = &fimc->subdev.entity; - sink = &fimc->vfd->entity; - /* FIMC-LITE's subdev and video node */ - ret = media_entity_create_link(source, FIMC_SD_PAD_SOURCE, - sink, 0, flags); - if (ret) - break; - /* TODO: create links to other entities */ - } - - return ret; -} - -/** - * fimc_md_create_links - create default links between registered entities - * - * Parallel interface sensor entities are connected directly to FIMC capture - * entities. The sensors using MIPI CSIS bus are connected through immutable - * link with CSI receiver entity specified by mux_id. Any registered CSIS - * entity has a link to each registered FIMC capture entity. Enabled links - * are created by default between each subsequent registered sensor and - * subsequent FIMC capture entity. The number of default active links is - * determined by the number of available sensors or FIMC entities, - * whichever is less. - */ -static int fimc_md_create_links(struct fimc_md *fmd) -{ - struct v4l2_subdev *sensor, *csis; - struct s5p_fimc_isp_info *pdata; - struct fimc_sensor_info *s_info; - struct media_entity *source, *sink; - int i, pad, fimc_id = 0, ret = 0; - u32 flags, link_mask = 0; - - for (i = 0; i < fmd->num_sensors; i++) { - if (fmd->sensor[i].subdev == NULL) - continue; - - sensor = fmd->sensor[i].subdev; - s_info = v4l2_get_subdev_hostdata(sensor); - if (!s_info || !s_info->pdata) - continue; - - source = NULL; - pdata = s_info->pdata; - - switch (pdata->bus_type) { - case FIMC_MIPI_CSI2: - if (WARN(pdata->mux_id >= CSIS_MAX_ENTITIES, - "Wrong CSI channel id: %d\n", pdata->mux_id)) - return -EINVAL; - - csis = fmd->csis[pdata->mux_id].sd; - if (WARN(csis == NULL, - "MIPI-CSI interface specified " - "but s5p-csis module is not loaded!\n")) - return -EINVAL; - - ret = media_entity_create_link(&sensor->entity, 0, - &csis->entity, CSIS_PAD_SINK, - MEDIA_LNK_FL_IMMUTABLE | - MEDIA_LNK_FL_ENABLED); - if (ret) - return ret; - - v4l2_info(&fmd->v4l2_dev, "created link [%s] => [%s]", - sensor->entity.name, csis->entity.name); - - source = NULL; - break; - - case FIMC_ITU_601...FIMC_ITU_656: - source = &sensor->entity; - pad = 0; - break; - - default: - v4l2_err(&fmd->v4l2_dev, "Wrong bus_type: %x\n", - pdata->bus_type); - return -EINVAL; - } - if (source == NULL) - continue; - - link_mask = 1 << fimc_id++; - ret = __fimc_md_create_fimc_sink_links(fmd, source, sensor, - pad, link_mask); - } - - for (i = 0; i < ARRAY_SIZE(fmd->csis); i++) { - if (fmd->csis[i].sd == NULL) - continue; - source = &fmd->csis[i].sd->entity; - pad = CSIS_PAD_SOURCE; - - link_mask = 1 << fimc_id++; - ret = __fimc_md_create_fimc_sink_links(fmd, source, NULL, - pad, link_mask); - } - - /* Create immutable links between each FIMC's subdev and video node */ - flags = MEDIA_LNK_FL_IMMUTABLE | MEDIA_LNK_FL_ENABLED; - for (i = 0; i < FIMC_MAX_DEVS; i++) { - if (!fmd->fimc[i]) - continue; - source = &fmd->fimc[i]->vid_cap.subdev.entity; - sink = &fmd->fimc[i]->vid_cap.vfd->entity; - ret = media_entity_create_link(source, FIMC_SD_PAD_SOURCE, - sink, 0, flags); - if (ret) - break; - } - - return __fimc_md_create_flite_source_links(fmd); -} - -/* - * The peripheral sensor clock management. - */ -static int fimc_md_get_clocks(struct fimc_md *fmd) -{ - char clk_name[32]; - struct clk *clock; - int i; - - for (i = 0; i < FIMC_MAX_CAMCLKS; i++) { - snprintf(clk_name, sizeof(clk_name), "sclk_cam%u", i); - clock = clk_get(NULL, clk_name); - if (IS_ERR_OR_NULL(clock)) { - v4l2_err(&fmd->v4l2_dev, "Failed to get clock: %s", - clk_name); - return -ENXIO; - } - fmd->camclk[i].clock = clock; - } - return 0; -} - -static void fimc_md_put_clocks(struct fimc_md *fmd) -{ - int i = FIMC_MAX_CAMCLKS; - - while (--i >= 0) { - if (IS_ERR_OR_NULL(fmd->camclk[i].clock)) - continue; - clk_put(fmd->camclk[i].clock); - fmd->camclk[i].clock = NULL; - } -} - -static int __fimc_md_set_camclk(struct fimc_md *fmd, - struct fimc_sensor_info *s_info, - bool on) -{ - struct s5p_fimc_isp_info *pdata = s_info->pdata; - struct fimc_camclk_info *camclk; - int ret = 0; - - if (WARN_ON(pdata->clk_id >= FIMC_MAX_CAMCLKS) || fmd == NULL) - return -EINVAL; - - camclk = &fmd->camclk[pdata->clk_id]; - - dbg("camclk %d, f: %lu, use_count: %d, on: %d", - pdata->clk_id, pdata->clk_frequency, camclk->use_count, on); - - if (on) { - if (camclk->use_count > 0 && - camclk->frequency != pdata->clk_frequency) - return -EINVAL; - - if (camclk->use_count++ == 0) { - clk_set_rate(camclk->clock, pdata->clk_frequency); - camclk->frequency = pdata->clk_frequency; - ret = clk_enable(camclk->clock); - dbg("Enabled camclk %d: f: %lu", pdata->clk_id, - clk_get_rate(camclk->clock)); - } - return ret; - } - - if (WARN_ON(camclk->use_count == 0)) - return 0; - - if (--camclk->use_count == 0) { - clk_disable(camclk->clock); - dbg("Disabled camclk %d", pdata->clk_id); - } - return ret; -} - -/** - * fimc_md_set_camclk - peripheral sensor clock setup - * @sd: sensor subdev to configure sclk_cam clock for - * @on: 1 to enable or 0 to disable the clock - * - * There are 2 separate clock outputs available in the SoC for external - * image processors. These clocks are shared between all registered FIMC - * devices to which sensors can be attached, either directly or through - * the MIPI CSI receiver. The clock is allowed here to be used by - * multiple sensors concurrently if they use same frequency. - * This function should only be called when the graph mutex is held. - */ -int fimc_md_set_camclk(struct v4l2_subdev *sd, bool on) -{ - struct fimc_sensor_info *s_info = v4l2_get_subdev_hostdata(sd); - struct fimc_md *fmd = entity_to_fimc_mdev(&sd->entity); - - return __fimc_md_set_camclk(fmd, s_info, on); -} - -static int fimc_md_link_notify(struct media_pad *source, - struct media_pad *sink, u32 flags) -{ - struct fimc_lite *fimc_lite = NULL; - struct fimc_dev *fimc = NULL; - struct fimc_pipeline *pipeline; - struct v4l2_subdev *sd; - int ret = 0; - - if (media_entity_type(sink->entity) != MEDIA_ENT_T_V4L2_SUBDEV) - return 0; - - sd = media_entity_to_v4l2_subdev(sink->entity); - - switch (sd->grp_id) { - case FLITE_GROUP_ID: - fimc_lite = v4l2_get_subdevdata(sd); - pipeline = &fimc_lite->pipeline; - break; - case FIMC_GROUP_ID: - fimc = v4l2_get_subdevdata(sd); - pipeline = &fimc->pipeline; - break; - default: - return 0; - } - - if (!(flags & MEDIA_LNK_FL_ENABLED)) { - ret = __fimc_pipeline_shutdown(pipeline); - pipeline->subdevs[IDX_SENSOR] = NULL; - pipeline->subdevs[IDX_CSIS] = NULL; - - if (fimc) { - mutex_lock(&fimc->lock); - fimc_ctrls_delete(fimc->vid_cap.ctx); - mutex_unlock(&fimc->lock); - } - return ret; - } - /* - * Link activation. Enable power of pipeline elements only if the - * pipeline is already in use, i.e. its video node is opened. - * Recreate the controls destroyed during the link deactivation. - */ - if (fimc) { - mutex_lock(&fimc->lock); - if (fimc->vid_cap.refcnt > 0) { - ret = __fimc_pipeline_initialize(pipeline, - source->entity, true); - if (!ret) - ret = fimc_capture_ctrls_create(fimc); - } - mutex_unlock(&fimc->lock); - } else { - mutex_lock(&fimc_lite->lock); - if (fimc_lite->ref_count > 0) { - ret = __fimc_pipeline_initialize(pipeline, - source->entity, true); - } - mutex_unlock(&fimc_lite->lock); - } - return ret ? -EPIPE : ret; -} - -static ssize_t fimc_md_sysfs_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct platform_device *pdev = to_platform_device(dev); - struct fimc_md *fmd = platform_get_drvdata(pdev); - - if (fmd->user_subdev_api) - return strlcpy(buf, "Sub-device API (sub-dev)\n", PAGE_SIZE); - - return strlcpy(buf, "V4L2 video node only API (vid-dev)\n", PAGE_SIZE); -} - -static ssize_t fimc_md_sysfs_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - struct platform_device *pdev = to_platform_device(dev); - struct fimc_md *fmd = platform_get_drvdata(pdev); - bool subdev_api; - int i; - - if (!strcmp(buf, "vid-dev\n")) - subdev_api = false; - else if (!strcmp(buf, "sub-dev\n")) - subdev_api = true; - else - return count; - - fmd->user_subdev_api = subdev_api; - for (i = 0; i < FIMC_MAX_DEVS; i++) - if (fmd->fimc[i]) - fmd->fimc[i]->vid_cap.user_subdev_api = subdev_api; - return count; -} -/* - * This device attribute is to select video pipeline configuration method. - * There are following valid values: - * vid-dev - for V4L2 video node API only, subdevice will be configured - * by the host driver. - * sub-dev - for media controller API, subdevs must be configured in user - * space before starting streaming. - */ -static DEVICE_ATTR(subdev_conf_mode, S_IWUSR | S_IRUGO, - fimc_md_sysfs_show, fimc_md_sysfs_store); - -static int fimc_md_probe(struct platform_device *pdev) -{ - struct v4l2_device *v4l2_dev; - struct fimc_md *fmd; - int ret; - - fmd = devm_kzalloc(&pdev->dev, sizeof(*fmd), GFP_KERNEL); - if (!fmd) - return -ENOMEM; - - spin_lock_init(&fmd->slock); - fmd->pdev = pdev; - - strlcpy(fmd->media_dev.model, "SAMSUNG S5P FIMC", - sizeof(fmd->media_dev.model)); - fmd->media_dev.link_notify = fimc_md_link_notify; - fmd->media_dev.dev = &pdev->dev; - - v4l2_dev = &fmd->v4l2_dev; - v4l2_dev->mdev = &fmd->media_dev; - v4l2_dev->notify = fimc_sensor_notify; - snprintf(v4l2_dev->name, sizeof(v4l2_dev->name), "%s", - dev_name(&pdev->dev)); - - ret = v4l2_device_register(&pdev->dev, &fmd->v4l2_dev); - if (ret < 0) { - v4l2_err(v4l2_dev, "Failed to register v4l2_device: %d\n", ret); - return ret; - } - ret = media_device_register(&fmd->media_dev); - if (ret < 0) { - v4l2_err(v4l2_dev, "Failed to register media device: %d\n", ret); - goto err_md; - } - ret = fimc_md_get_clocks(fmd); - if (ret) - goto err_clk; - - fmd->user_subdev_api = false; - - /* Protect the media graph while we're registering entities */ - mutex_lock(&fmd->media_dev.graph_mutex); - - ret = fimc_md_register_platform_entities(fmd); - if (ret) - goto err_unlock; - - if (pdev->dev.platform_data) { - ret = fimc_md_register_sensor_entities(fmd); - if (ret) - goto err_unlock; - } - ret = fimc_md_create_links(fmd); - if (ret) - goto err_unlock; - ret = v4l2_device_register_subdev_nodes(&fmd->v4l2_dev); - if (ret) - goto err_unlock; - - ret = device_create_file(&pdev->dev, &dev_attr_subdev_conf_mode); - if (ret) - goto err_unlock; - - platform_set_drvdata(pdev, fmd); - mutex_unlock(&fmd->media_dev.graph_mutex); - return 0; - -err_unlock: - mutex_unlock(&fmd->media_dev.graph_mutex); -err_clk: - media_device_unregister(&fmd->media_dev); - fimc_md_put_clocks(fmd); - fimc_md_unregister_entities(fmd); -err_md: - v4l2_device_unregister(&fmd->v4l2_dev); - return ret; -} - -static int __devexit fimc_md_remove(struct platform_device *pdev) -{ - struct fimc_md *fmd = platform_get_drvdata(pdev); - - if (!fmd) - return 0; - device_remove_file(&pdev->dev, &dev_attr_subdev_conf_mode); - fimc_md_unregister_entities(fmd); - media_device_unregister(&fmd->media_dev); - fimc_md_put_clocks(fmd); - return 0; -} - -static struct platform_driver fimc_md_driver = { - .probe = fimc_md_probe, - .remove = __devexit_p(fimc_md_remove), - .driver = { - .name = "s5p-fimc-md", - .owner = THIS_MODULE, - } -}; - -static int __init fimc_md_init(void) -{ - int ret; - - request_module("s5p-csis"); - ret = fimc_register_driver(); - if (ret) - return ret; - - return platform_driver_register(&fimc_md_driver); -} - -static void __exit fimc_md_exit(void) -{ - platform_driver_unregister(&fimc_md_driver); - fimc_unregister_driver(); -} - -module_init(fimc_md_init); -module_exit(fimc_md_exit); - -MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>"); -MODULE_DESCRIPTION("S5P FIMC camera host interface/video postprocessor driver"); -MODULE_LICENSE("GPL"); -MODULE_VERSION("2.0.1"); |
