This subdev driver currently only handles an image sensor's
power supplies and reset signal. There is no any I2C communication
here as it is handled by the ISP's firmware.
Signed-off-by: Sylwester Nawrocki <s.nawro...@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.p...@samsung.com>
---
drivers/media/platform/s5p-fimc/fimc-is-sensor.c | 308 ++++++++++++++++++++++
drivers/media/platform/s5p-fimc/fimc-is-sensor.h | 80 ++++++
2 files changed, 388 insertions(+)
create mode 100644 drivers/media/platform/s5p-fimc/fimc-is-sensor.c
create mode 100644 drivers/media/platform/s5p-fimc/fimc-is-sensor.h
diff --git a/drivers/media/platform/s5p-fimc/fimc-is-sensor.c
b/drivers/media/platform/s5p-fimc/fimc-is-sensor.c
new file mode 100644
index 0000000..151915c
--- /dev/null
+++ b/drivers/media/platform/s5p-fimc/fimc-is-sensor.c
@@ -0,0 +1,308 @@
+/*
+ * Samsung EXYNOS4x12 FIMC-IS (Imaging Subsystem) driver
+ *
+ * Copyright (C) 2013 Samsung Electronics Co., Ltd.
+ * Sylwester Nawrocki <s.nawro...@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/interrupt.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/kernel.h>
+#include <linux/memory.h>
+#include <linux/module.h>
+#include <linux/of_gpio.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 struct fimc_is_sensor *sd_to_fimc_is_sensor(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct fimc_is_sensor, subdev);
+}
+
+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)
+ sensor->format = *mf;
+ 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 = v4l2_get_subdevdata(sd);
+ int gpio = sensor->gpio_reset;
+ int ret;
+
+ pr_debug("%s:%d: on: %d\n", __func__, __LINE__, on);
+
+ if (on) {
+ ret = regulator_bulk_enable(SENSOR_NUM_SUPPLIES,
+ sensor->supplies);
+ 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);
+ }
+ } else {
+ if (gpio_is_valid(gpio))
+ gpio_set_value(gpio, 0);
+
+ ret = regulator_bulk_disable(SENSOR_NUM_SUPPLIES,
+ sensor->supplies);
+ }
+
+ 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); /* &of_flags); */
+ if (gpio_is_valid(gpio)) {
+ /* gpio->level = !(of_flags & OF_GPIO_ACTIVE_LOW); */
+ ret = gpio_request_one(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)
+ goto err_gpio;
+
+ of_id = of_match_node(fimc_is_sensor_of_match, dev->of_node);
+ if (!of_id) {
+ ret = -ENODEV;
+ goto err_reg;
+ }
+
+ sensor->drvdata = of_id->data;
+
+ 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)
+ goto err_reg;
+
+ v4l2_set_subdevdata(sd, sensor);
+
+ return 0;
+err_reg:
+ regulator_bulk_free(SENSOR_NUM_SUPPLIES, sensor->supplies);
+err_gpio:
+ if (gpio_is_valid(sensor->gpio_reset))
+ gpio_free(sensor->gpio_reset);
+ return ret;
+}
+
+static int fimc_is_sensor_remove(struct i2c_client *client)
+{
+ struct fimc_is_sensor *sensor;
+
+ regulator_bulk_free(SENSOR_NUM_SUPPLIES, sensor->supplies);
+ media_entity_cleanup(&sensor->subdev.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,
+};
+
+static const struct of_device_id fimc_is_sensor_of_match[] = {
+ {
+ .compatible = "samsung,s5k6a3",
+ .data = &s5k6a3_drvdata,
+ },
+ { }
+};
+MODULE_DEVICE_TABLE(of, fimc_is_sensor_of_match);
+
+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)
+{
+ return i2c_add_driver(&fimc_is_sensor_driver);
+}
+
+void fimc_is_unregister_sensor_driver(void)
+{
+ i2c_del_driver(&fimc_is_sensor_driver);
+}
+
+MODULE_AUTHOR("Sylwester Nawrocki <s.nawro...@samsung.com>");
+MODULE_DESCRIPTION("Exynos4x12 FIMC-IS image sensor subdev driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/media/platform/s5p-fimc/fimc-is-sensor.h
b/drivers/media/platform/s5p-fimc/fimc-is-sensor.h
new file mode 100644
index 0000000..e80490e
--- /dev/null
+++ b/drivers/media/platform/s5p-fimc/fimc-is-sensor.h
@@ -0,0 +1,80 @@
+/*
+ * Samsung EXYNOS4x12 FIMC-IS (Imaging Subsystem) driver
+ *
+ * Copyright (C) 2012 Samsung Electronics Co., Ltd.
+ * Younghwan Joo <yhwan....@samsung.com>
+ * Sylwester Nawrocki <s.nawro...@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.
+ */
+#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
+
+#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,
+ FIMC_IS_SENSOR_ID_S5K4E5,
+ FIMC_IS_SENSOR_ID_S5K3H7,
+ FIMC_IS_SENSOR_ID_CUSTOM,
+ FIMC_IS_SENSOR_ID_END
+};
+
+#define IS_SENSOR_CTRL_BUS_I2C0 0
+#define IS_SENSOR_CTRL_BUS_I2C1 1
+
+struct sensor_drv_data {
+ enum fimc_is_sensor_id id;
+ const char * const subdev_name;
+ unsigned int width;
+ unsigned int height;
+};
+
+/**
+ * struct fimc_is_sensor - fimc-is sensor data 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 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;
+};
+
+int fimc_is_register_sensor_driver(void);
+void fimc_is_unregister_sensor_driver(void);
+
+#endif /* FIMC_IS_SENSOR_H_ */
--
1.7.9.5
--
To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
