* Samsung EXYNOS4x12 FIMC-IS (Imaging Subsystem) driver
*
* Copyright (C) 2013 Samsung Electronics Co., Ltd.
- *
* Author: 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 version 2 as
* published by the Free Software Foundation.
*/
-#include <linux/delay.h>
-#include <linux/device.h>
-#include <linux/errno.h>
-#include <linux/gpio.h>
-#include <linux/i2c.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/of_gpio.h>
-#include <linux/pm_runtime.h>
-#include <linux/regulator/consumer.h>
-#include <linux/slab.h>
-#include <media/v4l2-subdev.h>
-#include "fimc-is.h"
#include "fimc-is-sensor.h"
-#define DRIVER_NAME "FIMC-IS-SENSOR"
-
-static const char * const sensor_supply_names[] = {
- "svdda",
- "svddio",
-};
-
-static const struct v4l2_mbus_framefmt fimc_is_sensor_formats[] = {
- {
- .code = V4L2_MBUS_FMT_SGRBG10_1X10,
- .colorspace = V4L2_COLORSPACE_SRGB,
- .field = V4L2_FIELD_NONE,
- }
-};
-
-static const struct v4l2_mbus_framefmt *find_sensor_format(
- struct v4l2_mbus_framefmt *mf)
-{
- int i;
-
- for (i = 0; i < ARRAY_SIZE(fimc_is_sensor_formats); i++)
- if (mf->code == fimc_is_sensor_formats[i].code)
- return &fimc_is_sensor_formats[i];
-
- return &fimc_is_sensor_formats[0];
-}
-
-static int fimc_is_sensor_enum_mbus_code(struct v4l2_subdev *sd,
- struct v4l2_subdev_fh *fh,
- struct v4l2_subdev_mbus_code_enum *code)
-{
- if (code->index >= ARRAY_SIZE(fimc_is_sensor_formats))
- return -EINVAL;
-
- code->code = fimc_is_sensor_formats[code->index].code;
- return 0;
-}
-
-static void fimc_is_sensor_try_format(struct fimc_is_sensor *sensor,
- struct v4l2_mbus_framefmt *mf)
-{
- const struct sensor_drv_data *dd = sensor->drvdata;
- const struct v4l2_mbus_framefmt *fmt;
-
- fmt = find_sensor_format(mf);
- mf->code = fmt->code;
- v4l_bound_align_image(&mf->width, 16 + 8, dd->width, 0,
- &mf->height, 12 + 8, dd->height, 0, 0);
-}
-
-static struct v4l2_mbus_framefmt *__fimc_is_sensor_get_format(
- struct fimc_is_sensor *sensor, struct v4l2_subdev_fh *fh,
- u32 pad, enum v4l2_subdev_format_whence which)
-{
- if (which == V4L2_SUBDEV_FORMAT_TRY)
- return fh ? v4l2_subdev_get_try_format(fh, pad) : NULL;
-
- return &sensor->format;
-}
-
-static int fimc_is_sensor_set_fmt(struct v4l2_subdev *sd,
- struct v4l2_subdev_fh *fh,
- struct v4l2_subdev_format *fmt)
-{
- struct fimc_is_sensor *sensor = sd_to_fimc_is_sensor(sd);
- struct v4l2_mbus_framefmt *mf;
-
- fimc_is_sensor_try_format(sensor, &fmt->format);
-
- mf = __fimc_is_sensor_get_format(sensor, fh, fmt->pad, fmt->which);
- if (mf) {
- mutex_lock(&sensor->lock);
- if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE)
- *mf = fmt->format;
- mutex_unlock(&sensor->lock);
- }
- return 0;
-}
-
-static int fimc_is_sensor_get_fmt(struct v4l2_subdev *sd,
- struct v4l2_subdev_fh *fh,
- struct v4l2_subdev_format *fmt)
-{
- struct fimc_is_sensor *sensor = sd_to_fimc_is_sensor(sd);
- struct v4l2_mbus_framefmt *mf;
-
- mf = __fimc_is_sensor_get_format(sensor, fh, fmt->pad, fmt->which);
-
- mutex_lock(&sensor->lock);
- fmt->format = *mf;
- mutex_unlock(&sensor->lock);
- return 0;
-}
-
-static struct v4l2_subdev_pad_ops fimc_is_sensor_pad_ops = {
- .enum_mbus_code = fimc_is_sensor_enum_mbus_code,
- .get_fmt = fimc_is_sensor_get_fmt,
- .set_fmt = fimc_is_sensor_set_fmt,
-};
-
-static int fimc_is_sensor_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
-{
- struct v4l2_mbus_framefmt *format = v4l2_subdev_get_try_format(fh, 0);
-
- *format = fimc_is_sensor_formats[0];
- format->width = FIMC_IS_SENSOR_DEF_PIX_WIDTH;
- format->height = FIMC_IS_SENSOR_DEF_PIX_HEIGHT;
-
- return 0;
-}
-
-static const struct v4l2_subdev_internal_ops fimc_is_sensor_sd_internal_ops = {
- .open = fimc_is_sensor_open,
-};
-
-static int fimc_is_sensor_s_power(struct v4l2_subdev *sd, int on)
-{
- struct fimc_is_sensor *sensor = sd_to_fimc_is_sensor(sd);
- int gpio = sensor->gpio_reset;
- int ret;
-
- if (on) {
- ret = pm_runtime_get(sensor->dev);
- if (ret < 0)
- return ret;
-
- ret = regulator_bulk_enable(SENSOR_NUM_SUPPLIES,
- sensor->supplies);
- if (ret < 0) {
- pm_runtime_put(sensor->dev);
- return ret;
- }
- if (gpio_is_valid(gpio)) {
- gpio_set_value(gpio, 1);
- usleep_range(600, 800);
- gpio_set_value(gpio, 0);
- usleep_range(10000, 11000);
- gpio_set_value(gpio, 1);
- }
-
- /* A delay needed for the sensor initialization. */
- msleep(20);
- } else {
- if (gpio_is_valid(gpio))
- gpio_set_value(gpio, 0);
-
- ret = regulator_bulk_disable(SENSOR_NUM_SUPPLIES,
- sensor->supplies);
- if (!ret)
- pm_runtime_put(sensor->dev);
- }
-
- pr_info("%s:%d: on: %d, ret: %d\n", __func__, __LINE__, on, ret);
-
- return ret;
-}
-
-static struct v4l2_subdev_core_ops fimc_is_sensor_core_ops = {
- .s_power = fimc_is_sensor_s_power,
-};
-
-static struct v4l2_subdev_ops fimc_is_sensor_subdev_ops = {
- .core = &fimc_is_sensor_core_ops,
- .pad = &fimc_is_sensor_pad_ops,
-};
-
-static const struct of_device_id fimc_is_sensor_of_match[];
-
-static int fimc_is_sensor_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
-{
- struct device *dev = &client->dev;
- struct fimc_is_sensor *sensor;
- const struct of_device_id *of_id;
- struct v4l2_subdev *sd;
- int gpio, i, ret;
-
- sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL);
- if (!sensor)
- return -ENOMEM;
-
- mutex_init(&sensor->lock);
- sensor->gpio_reset = -EINVAL;
-
- gpio = of_get_gpio_flags(dev->of_node, 0, NULL);
- if (gpio_is_valid(gpio)) {
- ret = devm_gpio_request_one(dev, gpio, GPIOF_OUT_INIT_LOW,
- DRIVER_NAME);
- if (ret < 0)
- return ret;
- }
- sensor->gpio_reset = gpio;
-
- for (i = 0; i < SENSOR_NUM_SUPPLIES; i++)
- sensor->supplies[i].supply = sensor_supply_names[i];
-
- ret = devm_regulator_bulk_get(&client->dev, SENSOR_NUM_SUPPLIES,
- sensor->supplies);
- if (ret < 0)
- return ret;
-
- of_id = of_match_node(fimc_is_sensor_of_match, dev->of_node);
- if (!of_id)
- return -ENODEV;
-
- sensor->drvdata = of_id->data;
- sensor->dev = dev;
-
- sd = &sensor->subdev;
- v4l2_i2c_subdev_init(sd, client, &fimc_is_sensor_subdev_ops);
- snprintf(sd->name, sizeof(sd->name), sensor->drvdata->subdev_name);
- sensor->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
-
- sensor->format.code = fimc_is_sensor_formats[0].code;
- sensor->format.width = FIMC_IS_SENSOR_DEF_PIX_WIDTH;
- sensor->format.height = FIMC_IS_SENSOR_DEF_PIX_HEIGHT;
-
- sensor->pad.flags = MEDIA_PAD_FL_SOURCE;
- ret = media_entity_init(&sd->entity, 1, &sensor->pad, 0);
- if (ret < 0)
- return ret;
-
- pm_runtime_no_callbacks(dev);
- pm_runtime_enable(dev);
-
- return ret;
-}
-
-static int fimc_is_sensor_remove(struct i2c_client *client)
-{
- struct v4l2_subdev *sd = i2c_get_clientdata(client);
- media_entity_cleanup(&sd->entity);
- return 0;
-}
-
-static const struct i2c_device_id fimc_is_sensor_ids[] = {
- { }
-};
-
static const struct sensor_drv_data s5k6a3_drvdata = {
.id = FIMC_IS_SENSOR_ID_S5K6A3,
- .subdev_name = "S5K6A3",
- .width = S5K6A3_SENSOR_WIDTH,
- .height = S5K6A3_SENSOR_HEIGHT,
+ .open_timeout = S5K6A3_OPEN_TIMEOUT,
};
-static const struct of_device_id fimc_is_sensor_of_match[] = {
+static const struct of_device_id fimc_is_sensor_of_ids[] = {
{
.compatible = "samsung,s5k6a3",
.data = &s5k6a3_drvdata,
{ }
};
-static struct i2c_driver fimc_is_sensor_driver = {
- .driver = {
- .of_match_table = fimc_is_sensor_of_match,
- .name = DRIVER_NAME,
- .owner = THIS_MODULE,
- },
- .probe = fimc_is_sensor_probe,
- .remove = fimc_is_sensor_remove,
- .id_table = fimc_is_sensor_ids,
-};
-
-int fimc_is_register_sensor_driver(void)
+const struct sensor_drv_data *fimc_is_sensor_get_drvdata(
+ struct device_node *node)
{
- return i2c_add_driver(&fimc_is_sensor_driver);
-}
+ const struct of_device_id *of_id;
-void fimc_is_unregister_sensor_driver(void)
-{
- i2c_del_driver(&fimc_is_sensor_driver);
+ of_id = of_match_node(fimc_is_sensor_of_ids, node);
+ return of_id ? of_id->data : NULL;
}
-
-MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>");
-MODULE_DESCRIPTION("Exynos4x12 FIMC-IS image sensor subdev driver");
-MODULE_LICENSE("GPL");
#ifndef FIMC_IS_SENSOR_H_
#define FIMC_IS_SENSOR_H_
-#include <linux/clk.h>
-#include <linux/device.h>
-#include <linux/kernel.h>
-#include <linux/platform_device.h>
-#include <linux/regulator/consumer.h>
-#include <linux/videodev2.h>
-#include <media/v4l2-subdev.h>
-
-#define FIMC_IS_SENSOR_OPEN_TIMEOUT 2000 /* ms */
-
-#define FIMC_IS_SENSOR_DEF_PIX_WIDTH 1296
-#define FIMC_IS_SENSOR_DEF_PIX_HEIGHT 732
+#include <linux/of.h>
+#include <linux/types.h>
+#define S5K6A3_OPEN_TIMEOUT 2000 /* ms */
#define S5K6A3_SENSOR_WIDTH 1392
#define S5K6A3_SENSOR_HEIGHT 1392
-#define SENSOR_NUM_SUPPLIES 2
-
enum fimc_is_sensor_id {
FIMC_IS_SENSOR_ID_S5K3H2 = 1,
FIMC_IS_SENSOR_ID_S5K6A3,
struct sensor_drv_data {
enum fimc_is_sensor_id id;
- const char * const subdev_name;
- unsigned int width;
- unsigned int height;
+ /* sensor open timeout in ms */
+ unsigned short open_timeout;
};
/**
* struct fimc_is_sensor - fimc-is sensor data structure
- * @dev: pointer to this I2C client device structure
- * @subdev: the image sensor's v4l2 subdev
- * @pad: subdev media source pad
- * @supplies: image sensor's voltage regulator supplies
- * @gpio_reset: GPIO connected to the sensor's reset pin
* @drvdata: a pointer to the sensor's parameters data structure
* @i2c_bus: ISP I2C bus index (0...1)
* @test_pattern: true to enable video test pattern
- * @lock: mutex protecting the structure's members below
- * @format: media bus format at the sensor's source pad
*/
struct fimc_is_sensor {
- struct device *dev;
- struct v4l2_subdev subdev;
- struct media_pad pad;
- struct regulator_bulk_data supplies[SENSOR_NUM_SUPPLIES];
- int gpio_reset;
const struct sensor_drv_data *drvdata;
unsigned int i2c_bus;
- bool test_pattern;
-
- struct mutex lock;
- struct v4l2_mbus_framefmt format;
+ u8 test_pattern;
};
-static inline
-struct fimc_is_sensor *sd_to_fimc_is_sensor(struct v4l2_subdev *sd)
-{
- return container_of(sd, struct fimc_is_sensor, subdev);
-}
-
-int fimc_is_register_sensor_driver(void);
-void fimc_is_unregister_sensor_driver(void);
+const struct sensor_drv_data *fimc_is_sensor_get_drvdata(
+ struct device_node *node);
#endif /* FIMC_IS_SENSOR_H_ */
}
}
-static int fimc_is_parse_sensor_config(struct fimc_is_sensor *sensor,
- struct device_node *np)
+static int fimc_is_parse_sensor_config(struct fimc_is *is, unsigned int index,
+ struct device_node *node)
{
+ struct fimc_is_sensor *sensor = &is->sensor[index];
u32 tmp = 0;
int ret;
- np = v4l2_of_get_next_endpoint(np, NULL);
- if (!np)
+ sensor->drvdata = fimc_is_sensor_get_drvdata(node);
+ if (!sensor->drvdata) {
+ dev_err(&is->pdev->dev, "no driver data found for: %s\n",
+ node->full_name);
+ return -EINVAL;
+ }
+
+ node = v4l2_of_get_next_endpoint(node, NULL);
+ if (!node)
return -ENXIO;
- np = v4l2_of_get_remote_port(np);
- if (!np)
+
+ node = v4l2_of_get_remote_port(node);
+ if (!node)
return -ENXIO;
/* Use MIPI-CSIS channel id to determine the ISP I2C bus index. */
- ret = of_property_read_u32(np, "reg", &tmp);
- sensor->i2c_bus = tmp - FIMC_INPUT_MIPI_CSI2_0;
+ ret = of_property_read_u32(node, "reg", &tmp);
+ if (ret < 0) {
+ dev_err(&is->pdev->dev, "reg property not found at: %s\n",
+ node->full_name);
+ return ret;
+ }
- return ret;
+ sensor->i2c_bus = tmp - FIMC_INPUT_MIPI_CSI2_0;
+ return 0;
}
static int fimc_is_register_subdevs(struct fimc_is *is)
{
- struct device_node *adapter, *child;
- int ret;
+ struct device_node *i2c_bus, *child;
+ int ret, index = 0;
ret = fimc_isp_subdev_create(&is->isp);
if (ret < 0)
return ret;
- for_each_compatible_node(adapter, NULL, FIMC_IS_I2C_COMPATIBLE) {
- if (!of_find_device_by_node(adapter)) {
- of_node_put(adapter);
- return -EPROBE_DEFER;
- }
+ for_each_compatible_node(i2c_bus, NULL, FIMC_IS_I2C_COMPATIBLE) {
+ for_each_available_child_of_node(i2c_bus, child) {
+ ret = fimc_is_parse_sensor_config(is, index, child);
- for_each_available_child_of_node(adapter, child) {
- struct i2c_client *client;
- struct v4l2_subdev *sd;
-
- client = of_find_i2c_device_by_node(child);
- if (!client)
- goto e_retry;
-
- sd = i2c_get_clientdata(client);
- if (!sd)
- goto e_retry;
-
- /* FIXME: Add support for multiple sensors. */
- if (WARN_ON(is->sensor))
- continue;
-
- is->sensor = sd_to_fimc_is_sensor(sd);
-
- if (fimc_is_parse_sensor_config(is->sensor, child)) {
- dev_warn(&is->pdev->dev, "DT parse error: %s\n",
- child->full_name);
+ if (ret < 0 || index >= FIMC_IS_SENSORS_NUM) {
+ of_node_put(child);
+ return ret;
}
- pr_debug("%s(): registered subdev: %p\n",
- __func__, sd->name);
+ index++;
}
}
return 0;
-
-e_retry:
- of_node_put(child);
- return -EPROBE_DEFER;
}
static int fimc_is_unregister_subdevs(struct fimc_is *is)
{
fimc_isp_subdev_destroy(&is->isp);
- is->sensor = NULL;
return 0;
}
fimc_is_hw_set_intgr0_gd0(is);
return fimc_is_wait_event(is, IS_ST_OPEN_SENSOR, 1,
- FIMC_IS_SENSOR_OPEN_TIMEOUT);
+ sensor->drvdata->open_timeout);
}
u32 prev_id;
int i, ret;
- /* Sensor initialization. */
- ret = fimc_is_hw_open_sensor(is, is->sensor);
+ /* Sensor initialization. Only one sensor is currently supported. */
+ ret = fimc_is_hw_open_sensor(is, &is->sensor[0]);
if (ret < 0)
return ret;
{
int ret;
- ret = fimc_is_register_sensor_driver();
- if (ret < 0)
- return ret;
-
ret = fimc_is_register_i2c_driver();
if (ret < 0)
- goto err_sens;
+ return ret;
ret = platform_driver_register(&fimc_is_driver);
- if (!ret)
- return ret;
- fimc_is_unregister_i2c_driver();
-err_sens:
- fimc_is_unregister_sensor_driver();
+ if (ret < 0)
+ fimc_is_unregister_i2c_driver();
+
return ret;
}
static void fimc_is_module_exit(void)
{
- fimc_is_unregister_sensor_driver();
fimc_is_unregister_i2c_driver();
platform_driver_unregister(&fimc_is_driver);
}
projects / GitHub / exynos8895 / android_kernel_samsung_universal8895.git / commitdiff