-From 63ef88ff48e864eed44d25e6edd61c743e6efd30 Mon Sep 17 00:00:00 2001
-From: Zefa Chen <zefa.chen@rock-chips.com>
-Date: Fri, 17 May 2019 18:23:03 +0800
-Subject: [PATCH] media: i2c: add ov9281 driver.
-
-Change-Id: I7b77250bbc56d2f861450cf77271ad15f9b88ab1
-Signed-off-by: Zefa Chen <zefa.chen@rock-chips.com>
----
- drivers/media/i2c/Kconfig | 11 +
- drivers/media/i2c/Makefile | 1 +
- drivers/media/i2c/ov9281.c | 1171 ++++++++++++++++++++++++++++++++++++
- 3 files changed, 1183 insertions(+)
- create mode 100644 drivers/media/i2c/ov9281.c
-
---- a/drivers/media/i2c/Kconfig
-+++ b/drivers/media/i2c/Kconfig
-@@ -1040,6 +1040,17 @@ config VIDEO_OV9640
- This is a Video4Linux2 sensor driver for the OmniVision
- OV9640 camera sensor.
-
-+config VIDEO_OV9281
-+ tristate "OmniVision OV9281 sensor support"
-+ depends on I2C && VIDEO_V4L2
-+ depends on MEDIA_CAMERA_SUPPORT
-+ help
-+ This is a Video4Linux2 sensor-level driver for the OmniVision
-+ OV9281 camera.
-+
-+ To compile this driver as a module, choose M here: the
-+ module will be called ov9281.
-+
- config VIDEO_OV9650
- tristate "OmniVision OV9650/OV9652 sensor support"
- depends on I2C && VIDEO_V4L2
---- a/drivers/media/i2c/Makefile
-+++ b/drivers/media/i2c/Makefile
-@@ -81,6 +81,7 @@ obj-$(CONFIG_VIDEO_OV7670) += ov7670.o
- obj-$(CONFIG_VIDEO_OV772X) += ov772x.o
- obj-$(CONFIG_VIDEO_OV7740) += ov7740.o
- obj-$(CONFIG_VIDEO_OV8856) += ov8856.o
-+obj-$(CONFIG_VIDEO_OV9281) += ov9281.o
- obj-$(CONFIG_VIDEO_OV9640) += ov9640.o
- obj-$(CONFIG_VIDEO_OV9650) += ov9650.o
- obj-$(CONFIG_VIDEO_OV13858) += ov13858.o
---- /dev/null
-+++ b/drivers/media/i2c/ov9281.c
-@@ -0,0 +1,1171 @@
-+// SPDX-License-Identifier: GPL-2.0
-+/*
-+ * ov9281 driver
-+ *
-+ * Copyright (C) 2017 Fuzhou Rockchip Electronics Co., Ltd.
-+ */
-+
-+#include <linux/clk.h>
-+#include <linux/device.h>
-+#include <linux/delay.h>
-+#include <linux/gpio/consumer.h>
-+#include <linux/i2c.h>
-+#include <linux/module.h>
-+#include <linux/pm_runtime.h>
-+#include <linux/regulator/consumer.h>
-+#include <linux/sysfs.h>
-+#include <linux/slab.h>
-+#include <linux/rk-camera-module.h>
-+#include <media/media-entity.h>
-+#include <media/v4l2-async.h>
-+#include <media/v4l2-ctrls.h>
-+#include <media/v4l2-subdev.h>
-+#include <linux/pinctrl/consumer.h>
-+
-+#define DRIVER_VERSION KERNEL_VERSION(0, 0x01, 0x0)
-+
-+#ifndef V4L2_CID_DIGITAL_GAIN
-+#define V4L2_CID_DIGITAL_GAIN V4L2_CID_GAIN
-+#endif
-+
-+#define OV9281_LINK_FREQ_400MHZ 400000000
-+/* pixel rate = link frequency * 2 * lanes / BITS_PER_SAMPLE */
-+#define OV9281_PIXEL_RATE (OV9281_LINK_FREQ_400MHZ * 2 * 2 / 10)
-+#define OV9281_XVCLK_FREQ 24000000
-+
-+#define CHIP_ID 0x9281
-+#define OV9281_REG_CHIP_ID 0x300a
-+
-+#define OV9281_REG_CTRL_MODE 0x0100
-+#define OV9281_MODE_SW_STANDBY 0x0
-+#define OV9281_MODE_STREAMING BIT(0)
-+
-+#define OV9281_REG_EXPOSURE 0x3500
-+#define OV9281_EXPOSURE_MIN 4
-+#define OV9281_EXPOSURE_STEP 1
-+#define OV9281_VTS_MAX 0x7fff
-+
-+#define OV9281_REG_GAIN_H 0x3508
-+#define OV9281_REG_GAIN_L 0x3509
-+#define OV9281_GAIN_H_MASK 0x07
-+#define OV9281_GAIN_H_SHIFT 8
-+#define OV9281_GAIN_L_MASK 0xff
-+#define OV9281_GAIN_MIN 0x10
-+#define OV9281_GAIN_MAX 0xf8
-+#define OV9281_GAIN_STEP 1
-+#define OV9281_GAIN_DEFAULT 0x10
-+
-+#define OV9281_REG_TEST_PATTERN 0x5e00
-+#define OV9281_TEST_PATTERN_ENABLE 0x80
-+#define OV9281_TEST_PATTERN_DISABLE 0x0
-+
-+#define OV9281_REG_VTS 0x380e
-+
-+#define REG_NULL 0xFFFF
-+
-+#define OV9281_REG_VALUE_08BIT 1
-+#define OV9281_REG_VALUE_16BIT 2
-+#define OV9281_REG_VALUE_24BIT 3
-+
-+#define OV9281_LANES 2
-+#define OV9281_BITS_PER_SAMPLE 10
-+
-+#define OF_CAMERA_PINCTRL_STATE_DEFAULT "rockchip,camera_default"
-+#define OF_CAMERA_PINCTRL_STATE_SLEEP "rockchip,camera_sleep"
-+
-+#define OV9281_NAME "ov9281"
-+
-+static const char * const ov9281_supply_names[] = {
-+ "avdd", /* Analog power */
-+ "dovdd", /* Digital I/O power */
-+ "dvdd", /* Digital core power */
-+};
-+
-+#define OV9281_NUM_SUPPLIES ARRAY_SIZE(ov9281_supply_names)
-+
-+struct regval {
-+ u16 addr;
-+ u8 val;
-+};
-+
-+struct ov9281_mode {
-+ u32 width;
-+ u32 height;
-+ u32 max_fps;
-+ u32 hts_def;
-+ u32 vts_def;
-+ u32 exp_def;
-+ const struct regval *reg_list;
-+};
-+
-+struct ov9281 {
-+ struct i2c_client *client;
-+ struct clk *xvclk;
-+ struct gpio_desc *reset_gpio;
-+ struct gpio_desc *pwdn_gpio;
-+ struct regulator_bulk_data supplies[OV9281_NUM_SUPPLIES];
-+
-+ struct pinctrl *pinctrl;
-+ struct pinctrl_state *pins_default;
-+ struct pinctrl_state *pins_sleep;
-+
-+ struct v4l2_subdev subdev;
-+ struct media_pad pad;
-+ struct v4l2_ctrl_handler ctrl_handler;
-+ struct v4l2_ctrl *exposure;
-+ struct v4l2_ctrl *anal_gain;
-+ struct v4l2_ctrl *digi_gain;
-+ struct v4l2_ctrl *hblank;
-+ struct v4l2_ctrl *vblank;
-+ struct v4l2_ctrl *test_pattern;
-+ struct mutex mutex;
-+ bool streaming;
-+ bool power_on;
-+ const struct ov9281_mode *cur_mode;
-+ u32 module_index;
-+ const char *module_facing;
-+ const char *module_name;
-+ const char *len_name;
-+};
-+
-+#define to_ov9281(sd) container_of(sd, struct ov9281, subdev)
-+
-+/*
-+ * Xclk 24Mhz
-+ */
-+static const struct regval ov9281_global_regs[] = {
-+ {REG_NULL, 0x00},
-+};
-+
-+/*
-+ * Xclk 24Mhz
-+ * max_framerate 120fps
-+ * mipi_datarate per lane 800Mbps
-+ */
-+static const struct regval ov9281_1280x800_regs[] = {
-+ {0x0103, 0x01},
-+ {0x0302, 0x32},
-+ {0x030d, 0x50},
-+ {0x030e, 0x02},
-+ {0x3001, 0x00},
-+ {0x3004, 0x00},
-+ {0x3005, 0x00},
-+ {0x3006, 0x04},
-+ {0x3011, 0x0a},
-+ {0x3013, 0x18},
-+ {0x3022, 0x01},
-+ {0x3023, 0x00},
-+ {0x302c, 0x00},
-+ {0x302f, 0x00},
-+ {0x3030, 0x04},
-+ {0x3039, 0x32},
-+ {0x303a, 0x00},
-+ {0x303f, 0x01},
-+ {0x3500, 0x00},
-+ {0x3501, 0x2a},
-+ {0x3502, 0x90},
-+ {0x3503, 0x08},
-+ {0x3505, 0x8c},
-+ {0x3507, 0x03},
-+ {0x3508, 0x00},
-+ {0x3509, 0x10},
-+ {0x3610, 0x80},
-+ {0x3611, 0xa0},
-+ {0x3620, 0x6f},
-+ {0x3632, 0x56},
-+ {0x3633, 0x78},
-+ {0x3662, 0x05},
-+ {0x3666, 0x00},
-+ {0x366f, 0x5a},
-+ {0x3680, 0x84},
-+ {0x3712, 0x80},
-+ {0x372d, 0x22},
-+ {0x3731, 0x80},
-+ {0x3732, 0x30},
-+ {0x3778, 0x00},
-+ {0x377d, 0x22},
-+ {0x3788, 0x02},
-+ {0x3789, 0xa4},
-+ {0x378a, 0x00},
-+ {0x378b, 0x4a},
-+ {0x3799, 0x20},
-+ {0x3800, 0x00},
-+ {0x3801, 0x00},
-+ {0x3802, 0x00},
-+ {0x3803, 0x00},
-+ {0x3804, 0x05},
-+ {0x3805, 0x0f},
-+ {0x3806, 0x03},
-+ {0x3807, 0x2f},
-+ {0x3808, 0x05},
-+ {0x3809, 0x00},
-+ {0x380a, 0x03},
-+ {0x380b, 0x20},
-+ {0x380c, 0x02},
-+ {0x380d, 0xd8},
-+ {0x380e, 0x03},
-+ {0x380f, 0x8e},
-+ {0x3810, 0x00},
-+ {0x3811, 0x08},
-+ {0x3812, 0x00},
-+ {0x3813, 0x08},
-+ {0x3814, 0x11},
-+ {0x3815, 0x11},
-+ {0x3820, 0x40},
-+ {0x3821, 0x00},
-+ {0x3881, 0x42},
-+ {0x38b1, 0x00},
-+ {0x3920, 0xff},
-+ {0x4003, 0x40},
-+ {0x4008, 0x04},
-+ {0x4009, 0x0b},
-+ {0x400c, 0x00},
-+ {0x400d, 0x07},
-+ {0x4010, 0x40},
-+ {0x4043, 0x40},
-+ {0x4307, 0x30},
-+ {0x4317, 0x00},
-+ {0x4501, 0x00},
-+ {0x4507, 0x00},
-+ {0x4509, 0x00},
-+ {0x450a, 0x08},
-+ {0x4601, 0x04},
-+ {0x470f, 0x00},
-+ {0x4f07, 0x00},
-+ {0x4800, 0x00},
-+ {0x5000, 0x9f},
-+ {0x5001, 0x00},
-+ {0x5e00, 0x00},
-+ {0x5d00, 0x07},
-+ {0x5d01, 0x00},
-+ {REG_NULL, 0x00},
-+};
-+
-+static const struct ov9281_mode supported_modes[] = {
-+ {
-+ .width = 1280,
-+ .height = 800,
-+ .max_fps = 120,
-+ .exp_def = 0x0320,
-+ .hts_def = 0x0b60,//0x2d8*4
-+ .vts_def = 0x038e,
-+ .reg_list = ov9281_1280x800_regs,
-+ },
-+};
-+
-+static const s64 link_freq_menu_items[] = {
-+ OV9281_LINK_FREQ_400MHZ
-+};
-+
-+static const char * const ov9281_test_pattern_menu[] = {
-+ "Disabled",
-+ "Vertical Color Bar Type 1",
-+ "Vertical Color Bar Type 2",
-+ "Vertical Color Bar Type 3",
-+ "Vertical Color Bar Type 4"
-+};
-+
-+/* Write registers up to 4 at a time */
-+static int ov9281_write_reg(struct i2c_client *client, u16 reg,
-+ u32 len, u32 val)
-+{
-+ u32 buf_i, val_i;
-+ u8 buf[6];
-+ u8 *val_p;
-+ __be32 val_be;
-+
-+ if (len > 4)
-+ return -EINVAL;
-+
-+ buf[0] = reg >> 8;
-+ buf[1] = reg & 0xff;
-+
-+ val_be = cpu_to_be32(val);
-+ val_p = (u8 *)&val_be;
-+ buf_i = 2;
-+ val_i = 4 - len;
-+
-+ while (val_i < 4)
-+ buf[buf_i++] = val_p[val_i++];
-+
-+ if (i2c_master_send(client, buf, len + 2) != len + 2)
-+ return -EIO;
-+
-+ return 0;
-+}
-+
-+static int ov9281_write_array(struct i2c_client *client,
-+ const struct regval *regs)
-+{
-+ u32 i;
-+ int ret = 0;
-+
-+ for (i = 0; ret == 0 && regs[i].addr != REG_NULL; i++)
-+ ret = ov9281_write_reg(client, regs[i].addr,
-+ OV9281_REG_VALUE_08BIT, regs[i].val);
-+
-+ return ret;
-+}
-+
-+/* Read registers up to 4 at a time */
-+static int ov9281_read_reg(struct i2c_client *client, u16 reg, unsigned int len,
-+ u32 *val)
-+{
-+ struct i2c_msg msgs[2];
-+ u8 *data_be_p;
-+ __be32 data_be = 0;
-+ __be16 reg_addr_be = cpu_to_be16(reg);
-+ int ret;
-+
-+ if (len > 4 || !len)
-+ return -EINVAL;
-+
-+ data_be_p = (u8 *)&data_be;
-+ /* Write register address */
-+ msgs[0].addr = client->addr;
-+ msgs[0].flags = 0;
-+ msgs[0].len = 2;
-+ msgs[0].buf = (u8 *)®_addr_be;
-+
-+ /* Read data from register */
-+ msgs[1].addr = client->addr;
-+ msgs[1].flags = I2C_M_RD;
-+ msgs[1].len = len;
-+ msgs[1].buf = &data_be_p[4 - len];
-+
-+ ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
-+ if (ret != ARRAY_SIZE(msgs))
-+ return -EIO;
-+
-+ *val = be32_to_cpu(data_be);
-+
-+ return 0;
-+}
-+
-+static int ov9281_get_reso_dist(const struct ov9281_mode *mode,
-+ struct v4l2_mbus_framefmt *framefmt)
-+{
-+ return abs(mode->width - framefmt->width) +
-+ abs(mode->height - framefmt->height);
-+}
-+
-+static const struct ov9281_mode *
-+ov9281_find_best_fit(struct v4l2_subdev_format *fmt)
-+{
-+ struct v4l2_mbus_framefmt *framefmt = &fmt->format;
-+ int dist;
-+ int cur_best_fit = 0;
-+ int cur_best_fit_dist = -1;
-+ unsigned int i;
-+
-+ for (i = 0; i < ARRAY_SIZE(supported_modes); i++) {
-+ dist = ov9281_get_reso_dist(&supported_modes[i], framefmt);
-+ if (cur_best_fit_dist == -1 || dist < cur_best_fit_dist) {
-+ cur_best_fit_dist = dist;
-+ cur_best_fit = i;
-+ }
-+ }
-+
-+ return &supported_modes[cur_best_fit];
-+}
-+
-+static int ov9281_set_fmt(struct v4l2_subdev *sd,
-+ struct v4l2_subdev_pad_config *cfg,
-+ struct v4l2_subdev_format *fmt)
-+{
-+ struct ov9281 *ov9281 = to_ov9281(sd);
-+ const struct ov9281_mode *mode;
-+ s64 h_blank, vblank_def;
-+
-+ mutex_lock(&ov9281->mutex);
-+
-+ mode = ov9281_find_best_fit(fmt);
-+ fmt->format.code = MEDIA_BUS_FMT_Y10_1X10;
-+ fmt->format.width = mode->width;
-+ fmt->format.height = mode->height;
-+ fmt->format.field = V4L2_FIELD_NONE;
-+ if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
-+#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
-+ *v4l2_subdev_get_try_format(sd, cfg, fmt->pad) = fmt->format;
-+#else
-+ mutex_unlock(&ov9281->mutex);
-+ return -ENOTTY;
-+#endif
-+ } else {
-+ ov9281->cur_mode = mode;
-+ h_blank = mode->hts_def - mode->width;
-+ __v4l2_ctrl_modify_range(ov9281->hblank, h_blank,
-+ h_blank, 1, h_blank);
-+ vblank_def = mode->vts_def - mode->height;
-+ __v4l2_ctrl_modify_range(ov9281->vblank, vblank_def,
-+ OV9281_VTS_MAX - mode->height,
-+ 1, vblank_def);
-+ }
-+
-+ mutex_unlock(&ov9281->mutex);
-+
-+ return 0;
-+}
-+
-+static int ov9281_get_fmt(struct v4l2_subdev *sd,
-+ struct v4l2_subdev_pad_config *cfg,
-+ struct v4l2_subdev_format *fmt)
-+{
-+ struct ov9281 *ov9281 = to_ov9281(sd);
-+ const struct ov9281_mode *mode = ov9281->cur_mode;
-+
-+ mutex_lock(&ov9281->mutex);
-+ if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
-+#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
-+ fmt->format = *v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
-+#else
-+ mutex_unlock(&ov9281->mutex);
-+ return -ENOTTY;
-+#endif
-+ } else {
-+ fmt->format.width = mode->width;
-+ fmt->format.height = mode->height;
-+ fmt->format.code = MEDIA_BUS_FMT_Y10_1X10;
-+ fmt->format.field = V4L2_FIELD_NONE;
-+ }
-+ mutex_unlock(&ov9281->mutex);
-+
-+ return 0;
-+}
-+
-+static int ov9281_enum_mbus_code(struct v4l2_subdev *sd,
-+ struct v4l2_subdev_pad_config *cfg,
-+ struct v4l2_subdev_mbus_code_enum *code)
-+{
-+ if (code->index != 0)
-+ return -EINVAL;
-+ code->code = MEDIA_BUS_FMT_Y10_1X10;
-+
-+ return 0;
-+}
-+
-+static int ov9281_enum_frame_sizes(struct v4l2_subdev *sd,
-+ struct v4l2_subdev_pad_config *cfg,
-+ struct v4l2_subdev_frame_size_enum *fse)
-+{
-+ if (fse->index >= ARRAY_SIZE(supported_modes))
-+ return -EINVAL;
-+
-+ if (fse->code != MEDIA_BUS_FMT_Y10_1X10)
-+ return -EINVAL;
-+
-+ fse->min_width = supported_modes[fse->index].width;
-+ fse->max_width = supported_modes[fse->index].width;
-+ fse->max_height = supported_modes[fse->index].height;
-+ fse->min_height = supported_modes[fse->index].height;
-+
-+ return 0;
-+}
-+
-+static int ov9281_enable_test_pattern(struct ov9281 *ov9281, u32 pattern)
-+{
-+ u32 val;
-+
-+ if (pattern)
-+ val = (pattern - 1) | OV9281_TEST_PATTERN_ENABLE;
-+ else
-+ val = OV9281_TEST_PATTERN_DISABLE;
-+
-+ return ov9281_write_reg(ov9281->client, OV9281_REG_TEST_PATTERN,
-+ OV9281_REG_VALUE_08BIT, val);
-+}
-+
-+static int OV9281_g_frame_interval(struct v4l2_subdev *sd,
-+ struct v4l2_subdev_frame_interval *fi)
-+{
-+ struct ov9281 *ov9281 = to_ov9281(sd);
-+ const struct ov9281_mode *mode = ov9281->cur_mode;
-+
-+ mutex_lock(&ov9281->mutex);
-+ fi->interval.numerator = 10000;
-+ fi->interval.denominator = mode->max_fps * 10000;
-+ mutex_unlock(&ov9281->mutex);
-+
-+ return 0;
-+}
-+
-+static void ov9281_get_module_inf(struct ov9281 *ov9281,
-+ struct rkmodule_inf *inf)
-+{
-+ memset(inf, 0, sizeof(*inf));
-+ strlcpy(inf->base.sensor, OV9281_NAME, sizeof(inf->base.sensor));
-+ strlcpy(inf->base.module, ov9281->module_name,
-+ sizeof(inf->base.module));
-+ strlcpy(inf->base.lens, ov9281->len_name, sizeof(inf->base.lens));
-+}
-+
-+static long ov9281_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
-+{
-+ struct ov9281 *ov9281 = to_ov9281(sd);
-+ long ret = 0;
-+
-+ switch (cmd) {
-+ case RKMODULE_GET_MODULE_INFO:
-+ ov9281_get_module_inf(ov9281, (struct rkmodule_inf *)arg);
-+ break;
-+ default:
-+ ret = -ENOIOCTLCMD;
-+ break;
-+ }
-+
-+ return ret;
-+}
-+
-+#ifdef CONFIG_COMPAT
-+static long ov9281_compat_ioctl32(struct v4l2_subdev *sd,
-+ unsigned int cmd, unsigned long arg)
-+{
-+ void __user *up = compat_ptr(arg);
-+ struct rkmodule_inf *inf;
-+ struct rkmodule_awb_cfg *cfg;
-+ long ret;
-+
-+ switch (cmd) {
-+ case RKMODULE_GET_MODULE_INFO:
-+ inf = kzalloc(sizeof(*inf), GFP_KERNEL);
-+ if (!inf) {
-+ ret = -ENOMEM;
-+ return ret;
-+ }
-+
-+ ret = ov9281_ioctl(sd, cmd, inf);
-+ if (!ret)
-+ ret = copy_to_user(up, inf, sizeof(*inf));
-+ kfree(inf);
-+ break;
-+ case RKMODULE_AWB_CFG:
-+ cfg = kzalloc(sizeof(*cfg), GFP_KERNEL);
-+ if (!cfg) {
-+ ret = -ENOMEM;
-+ return ret;
-+ }
-+
-+ ret = copy_from_user(cfg, up, sizeof(*cfg));
-+ if (!ret)
-+ ret = ov9281_ioctl(sd, cmd, cfg);
-+ kfree(cfg);
-+ break;
-+ default:
-+ ret = -ENOIOCTLCMD;
-+ break;
-+ }
-+
-+ return ret;
-+}
-+#endif
-+
-+static int __ov9281_start_stream(struct ov9281 *ov9281)
-+{
-+ int ret;
-+
-+ ret = ov9281_write_array(ov9281->client, ov9281->cur_mode->reg_list);
-+ if (ret)
-+ return ret;
-+
-+ /* In case these controls are set before streaming */
-+ mutex_unlock(&ov9281->mutex);
-+ ret = v4l2_ctrl_handler_setup(&ov9281->ctrl_handler);
-+ mutex_lock(&ov9281->mutex);
-+ if (ret)
-+ return ret;
-+
-+ return ov9281_write_reg(ov9281->client, OV9281_REG_CTRL_MODE,
-+ OV9281_REG_VALUE_08BIT, OV9281_MODE_STREAMING);
-+}
-+
-+static int __ov9281_stop_stream(struct ov9281 *ov9281)
-+{
-+ return ov9281_write_reg(ov9281->client, OV9281_REG_CTRL_MODE,
-+ OV9281_REG_VALUE_08BIT, OV9281_MODE_SW_STANDBY);
-+}
-+
-+static int ov9281_s_stream(struct v4l2_subdev *sd, int on)
-+{
-+ struct ov9281 *ov9281 = to_ov9281(sd);
-+ struct i2c_client *client = ov9281->client;
-+ int ret = 0;
-+
-+ mutex_lock(&ov9281->mutex);
-+ on = !!on;
-+ if (on == ov9281->streaming)
-+ goto unlock_and_return;
-+
-+ if (on) {
-+ ret = pm_runtime_get_sync(&client->dev);
-+ if (ret < 0) {
-+ pm_runtime_put_noidle(&client->dev);
-+ goto unlock_and_return;
-+ }
-+
-+ ret = __ov9281_start_stream(ov9281);
-+ if (ret) {
-+ v4l2_err(sd, "start stream failed while write regs\n");
-+ pm_runtime_put(&client->dev);
-+ goto unlock_and_return;
-+ }
-+ } else {
-+ __ov9281_stop_stream(ov9281);
-+ pm_runtime_put(&client->dev);
-+ }
-+
-+ ov9281->streaming = on;
-+
-+unlock_and_return:
-+ mutex_unlock(&ov9281->mutex);
-+
-+ return ret;
-+}
-+
-+static int ov9281_s_power(struct v4l2_subdev *sd, int on)
-+{
-+ struct ov9281 *ov9281 = to_ov9281(sd);
-+ struct i2c_client *client = ov9281->client;
-+ int ret = 0;
-+
-+ mutex_lock(&ov9281->mutex);
-+
-+ /* If the power state is not modified - no work to do. */
-+ if (ov9281->power_on == !!on)
-+ goto unlock_and_return;
-+
-+ if (on) {
-+ ret = pm_runtime_get_sync(&client->dev);
-+ if (ret < 0) {
-+ pm_runtime_put_noidle(&client->dev);
-+ goto unlock_and_return;
-+ }
-+ ret = ov9281_write_array(ov9281->client, ov9281_global_regs);
-+ if (ret) {
-+ v4l2_err(sd, "could not set init registers\n");
-+ pm_runtime_put_noidle(&client->dev);
-+ goto unlock_and_return;
-+ }
-+ ov9281->power_on = true;
-+ } else {
-+ pm_runtime_put(&client->dev);
-+ ov9281->power_on = false;
-+ }
-+
-+unlock_and_return:
-+ mutex_unlock(&ov9281->mutex);
-+
-+ return ret;
-+}
-+
-+/* Calculate the delay in us by clock rate and clock cycles */
-+static inline u32 ov9281_cal_delay(u32 cycles)
-+{
-+ return DIV_ROUND_UP(cycles, OV9281_XVCLK_FREQ / 1000 / 1000);
-+}
-+
-+static int __ov9281_power_on(struct ov9281 *ov9281)
-+{
-+ int ret;
-+ u32 delay_us;
-+ struct device *dev = &ov9281->client->dev;
-+
-+ if (!IS_ERR_OR_NULL(ov9281->pins_default)) {
-+ ret = pinctrl_select_state(ov9281->pinctrl,
-+ ov9281->pins_default);
-+ if (ret < 0)
-+ dev_err(dev, "could not set pins\n");
-+ }
-+
-+ ret = clk_prepare_enable(ov9281->xvclk);
-+ if (ret < 0) {
-+ dev_err(dev, "Failed to enable xvclk\n");
-+ return ret;
-+ }
-+
-+ if (!IS_ERR(ov9281->reset_gpio))
-+ gpiod_set_value_cansleep(ov9281->reset_gpio, 0);
-+
-+ ret = regulator_bulk_enable(OV9281_NUM_SUPPLIES, ov9281->supplies);
-+ if (ret < 0) {
-+ dev_err(dev, "Failed to enable regulators\n");
-+ goto disable_clk;
-+ }
-+
-+ if (!IS_ERR(ov9281->reset_gpio))
-+ gpiod_set_value_cansleep(ov9281->reset_gpio, 1);
-+
-+ usleep_range(500, 1000);
-+ if (!IS_ERR(ov9281->pwdn_gpio))
-+ gpiod_set_value_cansleep(ov9281->pwdn_gpio, 1);
-+
-+ /* 8192 cycles prior to first SCCB transaction */
-+ delay_us = ov9281_cal_delay(8192);
-+ usleep_range(delay_us, delay_us * 2);
-+
-+ return 0;
-+
-+disable_clk:
-+ clk_disable_unprepare(ov9281->xvclk);
-+
-+ return ret;
-+}
-+
-+static void __ov9281_power_off(struct ov9281 *ov9281)
-+{
-+ int ret;
-+ struct device *dev = &ov9281->client->dev;
-+
-+ if (!IS_ERR(ov9281->pwdn_gpio))
-+ gpiod_set_value_cansleep(ov9281->pwdn_gpio, 0);
-+ clk_disable_unprepare(ov9281->xvclk);
-+ if (!IS_ERR(ov9281->reset_gpio))
-+ gpiod_set_value_cansleep(ov9281->reset_gpio, 0);
-+ if (!IS_ERR_OR_NULL(ov9281->pins_sleep)) {
-+ ret = pinctrl_select_state(ov9281->pinctrl,
-+ ov9281->pins_sleep);
-+ if (ret < 0)
-+ dev_dbg(dev, "could not set pins\n");
-+ }
-+ regulator_bulk_disable(OV9281_NUM_SUPPLIES, ov9281->supplies);
-+}
-+
-+static int ov9281_runtime_resume(struct device *dev)
-+{
-+ struct i2c_client *client = to_i2c_client(dev);
-+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
-+ struct ov9281 *ov9281 = to_ov9281(sd);
-+
-+ return __ov9281_power_on(ov9281);
-+}
-+
-+static int ov9281_runtime_suspend(struct device *dev)
-+{
-+ struct i2c_client *client = to_i2c_client(dev);
-+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
-+ struct ov9281 *ov9281 = to_ov9281(sd);
-+
-+ __ov9281_power_off(ov9281);
-+
-+ return 0;
-+}
-+
-+#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
-+static int ov9281_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
-+{
-+ struct ov9281 *ov9281 = to_ov9281(sd);
-+ struct v4l2_mbus_framefmt *try_fmt =
-+ v4l2_subdev_get_try_format(sd, fh->pad, 0);
-+ const struct ov9281_mode *def_mode = &supported_modes[0];
-+
-+ mutex_lock(&ov9281->mutex);
-+ /* Initialize try_fmt */
-+ try_fmt->width = def_mode->width;
-+ try_fmt->height = def_mode->height;
-+ try_fmt->code = MEDIA_BUS_FMT_Y10_1X10;
-+ try_fmt->field = V4L2_FIELD_NONE;
-+
-+ mutex_unlock(&ov9281->mutex);
-+ /* No crop or compose */
-+
-+ return 0;
-+}
-+#endif
-+
-+static const struct dev_pm_ops ov9281_pm_ops = {
-+ SET_RUNTIME_PM_OPS(ov9281_runtime_suspend,
-+ ov9281_runtime_resume, NULL)
-+};
-+
-+#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
-+static const struct v4l2_subdev_internal_ops ov9281_internal_ops = {
-+ .open = ov9281_open,
-+};
-+#endif
-+
-+static const struct v4l2_subdev_core_ops ov9281_core_ops = {
-+ .s_power = ov9281_s_power,
-+ .ioctl = ov9281_ioctl,
-+#ifdef CONFIG_COMPAT
-+ .compat_ioctl32 = ov9281_compat_ioctl32,
-+#endif
-+};
-+
-+static const struct v4l2_subdev_video_ops ov9281_video_ops = {
-+ .s_stream = ov9281_s_stream,
-+ .g_frame_interval = OV9281_g_frame_interval,
-+};
-+
-+static const struct v4l2_subdev_pad_ops ov9281_pad_ops = {
-+ .enum_mbus_code = ov9281_enum_mbus_code,
-+ .enum_frame_size = ov9281_enum_frame_sizes,
-+ .get_fmt = ov9281_get_fmt,
-+ .set_fmt = ov9281_set_fmt,
-+};
-+
-+static const struct v4l2_subdev_ops ov9281_subdev_ops = {
-+ .core = &ov9281_core_ops,
-+ .video = &ov9281_video_ops,
-+ .pad = &ov9281_pad_ops,
-+};
-+
-+static int ov9281_set_ctrl(struct v4l2_ctrl *ctrl)
-+{
-+ struct ov9281 *ov9281 = container_of(ctrl->handler,
-+ struct ov9281, ctrl_handler);
-+ struct i2c_client *client = ov9281->client;
-+ s64 max;
-+ int ret = 0;
-+
-+ /* Propagate change of current control to all related controls */
-+ switch (ctrl->id) {
-+ case V4L2_CID_VBLANK:
-+ /* Update max exposure while meeting expected vblanking */
-+ max = ov9281->cur_mode->height + ctrl->val - 4;
-+ __v4l2_ctrl_modify_range(ov9281->exposure,
-+ ov9281->exposure->minimum, max,
-+ ov9281->exposure->step,
-+ ov9281->exposure->default_value);
-+ break;
-+ }
-+
-+ if (pm_runtime_get(&client->dev) <= 0)
-+ return 0;
-+
-+ switch (ctrl->id) {
-+ case V4L2_CID_EXPOSURE:
-+ /* 4 least significant bits of expsoure are fractional part */
-+ ret = ov9281_write_reg(ov9281->client, OV9281_REG_EXPOSURE,
-+ OV9281_REG_VALUE_24BIT, ctrl->val << 4);
-+ break;
-+ case V4L2_CID_ANALOGUE_GAIN:
-+ ret = ov9281_write_reg(ov9281->client, OV9281_REG_GAIN_H,
-+ OV9281_REG_VALUE_08BIT,
-+ (ctrl->val >> OV9281_GAIN_H_SHIFT) & OV9281_GAIN_H_MASK);
-+ ret |= ov9281_write_reg(ov9281->client, OV9281_REG_GAIN_L,
-+ OV9281_REG_VALUE_08BIT,
-+ ctrl->val & OV9281_GAIN_L_MASK);
-+ break;
-+ case V4L2_CID_VBLANK:
-+ ret = ov9281_write_reg(ov9281->client, OV9281_REG_VTS,
-+ OV9281_REG_VALUE_16BIT,
-+ ctrl->val + ov9281->cur_mode->height);
-+ break;
-+ case V4L2_CID_TEST_PATTERN:
-+ ret = ov9281_enable_test_pattern(ov9281, ctrl->val);
-+ break;
-+ default:
-+ dev_warn(&client->dev, "%s Unhandled id:0x%x, val:0x%x\n",
-+ __func__, ctrl->id, ctrl->val);
-+ break;
-+ }
-+
-+ pm_runtime_put(&client->dev);
-+
-+ return ret;
-+}
-+
-+static const struct v4l2_ctrl_ops ov9281_ctrl_ops = {
-+ .s_ctrl = ov9281_set_ctrl,
-+};
-+
-+static int ov9281_initialize_controls(struct ov9281 *ov9281)
-+{
-+ const struct ov9281_mode *mode;
-+ struct v4l2_ctrl_handler *handler;
-+ struct v4l2_ctrl *ctrl;
-+ s64 exposure_max, vblank_def;
-+ u32 h_blank;
-+ int ret;
-+
-+ handler = &ov9281->ctrl_handler;
-+ mode = ov9281->cur_mode;
-+ ret = v4l2_ctrl_handler_init(handler, 8);
-+ if (ret)
-+ return ret;
-+ handler->lock = &ov9281->mutex;
-+
-+ ctrl = v4l2_ctrl_new_int_menu(handler, NULL, V4L2_CID_LINK_FREQ,
-+ 0, 0, link_freq_menu_items);
-+ if (ctrl)
-+ ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
-+
-+ v4l2_ctrl_new_std(handler, NULL, V4L2_CID_PIXEL_RATE,
-+ 0, OV9281_PIXEL_RATE, 1, OV9281_PIXEL_RATE);
-+
-+ h_blank = mode->hts_def - mode->width;
-+ ov9281->hblank = v4l2_ctrl_new_std(handler, NULL, V4L2_CID_HBLANK,
-+ h_blank, h_blank, 1, h_blank);
-+ if (ov9281->hblank)
-+ ov9281->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
-+
-+ vblank_def = mode->vts_def - mode->height;
-+ ov9281->vblank = v4l2_ctrl_new_std(handler, &ov9281_ctrl_ops,
-+ V4L2_CID_VBLANK, vblank_def,
-+ OV9281_VTS_MAX - mode->height,
-+ 1, vblank_def);
-+
-+ exposure_max = mode->vts_def - 4;
-+ ov9281->exposure = v4l2_ctrl_new_std(handler, &ov9281_ctrl_ops,
-+ V4L2_CID_EXPOSURE, OV9281_EXPOSURE_MIN,
-+ exposure_max, OV9281_EXPOSURE_STEP,
-+ mode->exp_def);
-+
-+ ov9281->anal_gain = v4l2_ctrl_new_std(handler, &ov9281_ctrl_ops,
-+ V4L2_CID_ANALOGUE_GAIN, OV9281_GAIN_MIN,
-+ OV9281_GAIN_MAX, OV9281_GAIN_STEP,
-+ OV9281_GAIN_DEFAULT);
-+
-+ ov9281->test_pattern = v4l2_ctrl_new_std_menu_items(handler,
-+ &ov9281_ctrl_ops, V4L2_CID_TEST_PATTERN,
-+ ARRAY_SIZE(ov9281_test_pattern_menu) - 1,
-+ 0, 0, ov9281_test_pattern_menu);
-+
-+ if (handler->error) {
-+ ret = handler->error;
-+ dev_err(&ov9281->client->dev,
-+ "Failed to init controls(%d)\n", ret);
-+ goto err_free_handler;
-+ }
-+
-+ ov9281->subdev.ctrl_handler = handler;
-+
-+ return 0;
-+
-+err_free_handler:
-+ v4l2_ctrl_handler_free(handler);
-+
-+ return ret;
-+}
-+
-+static int ov9281_check_sensor_id(struct ov9281 *ov9281,
-+ struct i2c_client *client)
-+{
-+ struct device *dev = &ov9281->client->dev;
-+ u32 id = 0;
-+ int ret;
-+
-+ ret = ov9281_read_reg(client, OV9281_REG_CHIP_ID,
-+ OV9281_REG_VALUE_16BIT, &id);
-+ if (id != CHIP_ID) {
-+ dev_err(dev, "Unexpected sensor id(%06x), ret(%d)\n", id, ret);
-+ return -ENODEV;
-+ }
-+
-+ dev_info(dev, "Detected OV%06x sensor\n", CHIP_ID);
-+
-+ return 0;
-+}
-+
-+static int ov9281_configure_regulators(struct ov9281 *ov9281)
-+{
-+ unsigned int i;
-+
-+ for (i = 0; i < OV9281_NUM_SUPPLIES; i++)
-+ ov9281->supplies[i].supply = ov9281_supply_names[i];
-+
-+ return devm_regulator_bulk_get(&ov9281->client->dev,
-+ OV9281_NUM_SUPPLIES,
-+ ov9281->supplies);
-+}
-+
-+static int ov9281_probe(struct i2c_client *client,
-+ const struct i2c_device_id *id)
-+{
-+ struct device *dev = &client->dev;
-+ struct device_node *node = dev->of_node;
-+ struct ov9281 *ov9281;
-+ struct v4l2_subdev *sd;
-+ char facing[2];
-+ int ret;
-+
-+ dev_info(dev, "driver version: %02x.%02x.%02x",
-+ DRIVER_VERSION >> 16,
-+ (DRIVER_VERSION & 0xff00) >> 8,
-+ DRIVER_VERSION & 0x00ff);
-+
-+ ov9281 = devm_kzalloc(dev, sizeof(*ov9281), GFP_KERNEL);
-+ if (!ov9281)
-+ return -ENOMEM;
-+
-+ ret = of_property_read_u32(node, RKMODULE_CAMERA_MODULE_INDEX,
-+ &ov9281->module_index);
-+ ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_FACING,
-+ &ov9281->module_facing);
-+ ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_NAME,
-+ &ov9281->module_name);
-+ ret |= of_property_read_string(node, RKMODULE_CAMERA_LENS_NAME,
-+ &ov9281->len_name);
-+ if (ret) {
-+ dev_err(dev, "could not get module information!\n");
-+ return -EINVAL;
-+ }
-+
-+ ov9281->client = client;
-+ ov9281->cur_mode = &supported_modes[0];
-+
-+ ov9281->xvclk = devm_clk_get(dev, "xvclk");
-+ if (IS_ERR(ov9281->xvclk)) {
-+ dev_err(dev, "Failed to get xvclk\n");
-+ return -EINVAL;
-+ }
-+ ret = clk_set_rate(ov9281->xvclk, OV9281_XVCLK_FREQ);
-+ if (ret < 0) {
-+ dev_err(dev, "Failed to set xvclk rate (24MHz)\n");
-+ return ret;
-+ }
-+ if (clk_get_rate(ov9281->xvclk) != OV9281_XVCLK_FREQ)
-+ dev_warn(dev, "xvclk mismatched, modes are based on 24MHz\n");
-+
-+ ov9281->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
-+ if (IS_ERR(ov9281->reset_gpio))
-+ dev_warn(dev, "Failed to get reset-gpios\n");
-+
-+ ov9281->pwdn_gpio = devm_gpiod_get(dev, "pwdn", GPIOD_OUT_LOW);
-+ if (IS_ERR(ov9281->pwdn_gpio))
-+ dev_warn(dev, "Failed to get pwdn-gpios\n");
-+
-+ ov9281->pinctrl = devm_pinctrl_get(dev);
-+ if (!IS_ERR(ov9281->pinctrl)) {
-+ ov9281->pins_default =
-+ pinctrl_lookup_state(ov9281->pinctrl,
-+ OF_CAMERA_PINCTRL_STATE_DEFAULT);
-+ if (IS_ERR(ov9281->pins_default))
-+ dev_err(dev, "could not get default pinstate\n");
-+
-+ ov9281->pins_sleep =
-+ pinctrl_lookup_state(ov9281->pinctrl,
-+ OF_CAMERA_PINCTRL_STATE_SLEEP);
-+ if (IS_ERR(ov9281->pins_sleep))
-+ dev_err(dev, "could not get sleep pinstate\n");
-+ } else {
-+ dev_err(dev, "no pinctrl\n");
-+ }
-+
-+ ret = ov9281_configure_regulators(ov9281);
-+ if (ret) {
-+ dev_err(dev, "Failed to get power regulators\n");
-+ return ret;
-+ }
-+
-+ mutex_init(&ov9281->mutex);
-+
-+ sd = &ov9281->subdev;
-+ v4l2_i2c_subdev_init(sd, client, &ov9281_subdev_ops);
-+ ret = ov9281_initialize_controls(ov9281);
-+ if (ret)
-+ goto err_destroy_mutex;
-+
-+ ret = __ov9281_power_on(ov9281);
-+ if (ret)
-+ goto err_free_handler;
-+
-+ ret = ov9281_check_sensor_id(ov9281, client);
-+ if (ret)
-+ goto err_power_off;
-+
-+#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
-+ sd->internal_ops = &ov9281_internal_ops;
-+ sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
-+#endif
-+#if defined(CONFIG_MEDIA_CONTROLLER)
-+ ov9281->pad.flags = MEDIA_PAD_FL_SOURCE;
-+ sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
-+ ret = media_entity_init(&sd->entity, 1, &ov9281->pad, 0);
-+ if (ret < 0)
-+ goto err_power_off;
-+#endif
-+
-+ memset(facing, 0, sizeof(facing));
-+ if (strcmp(ov9281->module_facing, "back") == 0)
-+ facing[0] = 'b';
-+ else
-+ facing[0] = 'f';
-+
-+ snprintf(sd->name, sizeof(sd->name), "m%02d_%s_%s %s",
-+ ov9281->module_index, facing,
-+ OV9281_NAME, dev_name(sd->dev));
-+ ret = v4l2_async_register_subdev_sensor_common(sd);
-+ if (ret) {
-+ dev_err(dev, "v4l2 async register subdev failed\n");
-+ goto err_clean_entity;
-+ }
-+
-+ pm_runtime_set_active(dev);
-+ pm_runtime_enable(dev);
-+ pm_runtime_idle(dev);
-+
-+ return 0;
-+
-+err_clean_entity:
-+#if defined(CONFIG_MEDIA_CONTROLLER)
-+ media_entity_cleanup(&sd->entity);
-+#endif
-+err_power_off:
-+ __ov9281_power_off(ov9281);
-+err_free_handler:
-+ v4l2_ctrl_handler_free(&ov9281->ctrl_handler);
-+err_destroy_mutex:
-+ mutex_destroy(&ov9281->mutex);
-+
-+ return ret;
-+}
-+
-+static int ov9281_remove(struct i2c_client *client)
-+{
-+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
-+ struct ov9281 *ov9281 = to_ov9281(sd);
-+
-+ v4l2_async_unregister_subdev(sd);
-+#if defined(CONFIG_MEDIA_CONTROLLER)
-+ media_entity_cleanup(&sd->entity);
-+#endif
-+ v4l2_ctrl_handler_free(&ov9281->ctrl_handler);
-+ mutex_destroy(&ov9281->mutex);
-+
-+ pm_runtime_disable(&client->dev);
-+ if (!pm_runtime_status_suspended(&client->dev))
-+ __ov9281_power_off(ov9281);
-+ pm_runtime_set_suspended(&client->dev);
-+
-+ return 0;
-+}
-+
-+#if IS_ENABLED(CONFIG_OF)
-+static const struct of_device_id ov9281_of_match[] = {
-+ { .compatible = "ovti,ov9281" },
-+ {},
-+};
-+MODULE_DEVICE_TABLE(of, ov9281_of_match);
-+#endif
-+
-+static const struct i2c_device_id ov9281_match_id[] = {
-+ { "ovti,ov9281", 0 },
-+ { },
-+};
-+
-+static struct i2c_driver ov9281_i2c_driver = {
-+ .driver = {
-+ .name = OV9281_NAME,
-+ .pm = &ov9281_pm_ops,
-+ .of_match_table = of_match_ptr(ov9281_of_match),
-+ },
-+ .probe = &ov9281_probe,
-+ .remove = &ov9281_remove,
-+ .id_table = ov9281_match_id,
-+};
-+
-+static int __init sensor_mod_init(void)
-+{
-+ return i2c_add_driver(&ov9281_i2c_driver);
-+}
-+
-+static void __exit sensor_mod_exit(void)
-+{
-+ i2c_del_driver(&ov9281_i2c_driver);
-+}
-+
-+device_initcall_sync(sensor_mod_init);
-+module_exit(sensor_mod_exit);
-+
-+MODULE_DESCRIPTION("OmniVision ov9281 sensor driver");
-+MODULE_LICENSE("GPL v2");
projects / openwrt / staging / chunkeey.git / blobdiff