[media] exynos4-is: Add common FIMC-IS image sensor driver

This patch adds a common image sensor driver and Makefile/Kconfig
to enable compilation of the whole IS driver.
The sensor subdev driver currently only handles an image sensor's
power supplies and reset signal. There is no I2C communication as
it is handled by the ISP's firmware.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 83 insertions, 0 deletions

diff --git a/drivers/media/platform/exynos4-is/fimc-is-sensor.h b/drivers/media/platform/exynos4-is/fimc-is-sensor.h
new file mode 100644
index 000000000000..50b8e4d59d62
--- /dev/null
+++ b/drivers/media/platform/exynos4-is/fimc-is-sensor.h
@@ -0,0 +1,83 @@
+/*
+ * Samsung EXYNOS4x12 FIMC-IS (Imaging Subsystem) driver
+ *
+ * Copyright (C) 2013 Samsung Electronics Co., Ltd.
+ *
+ * Authors:  Sylwester Nawrocki <s.nawrocki@samsung.com>
+ *           Younghwan Joo <yhwan.joo@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
+ * @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;
+};
+
+int fimc_is_register_sensor_driver(void);
+void fimc_is_unregister_sensor_driver(void);
+
+#endif /* FIMC_IS_SENSOR_H_ */