From abcc0b4c71396e215f170040824624ea791c0f46 Mon Sep 17 00:00:00 2001 From: Wang Panzhenzhuan Date: Sun, 28 Apr 2019 21:08:29 +0800 Subject: [PATCH] media: i2c: add sensor ov2680 Change-Id: Ia08879044569f4a656b6fa1e0eb78f336b34a1bd Signed-off-by: Wang Panzhenzhuan --- drivers/media/i2c/Kconfig | 12 + drivers/media/i2c/Makefile | 1 + drivers/media/i2c/ov2680.c | 1332 ++++++++++++++++++++++++++++++++++++ 3 files changed, 1345 insertions(+) create mode 100644 drivers/media/i2c/ov2680.c diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig index 0a2ce6984591..825113cfc750 100644 --- a/drivers/media/i2c/Kconfig +++ b/drivers/media/i2c/Kconfig @@ -554,6 +554,18 @@ config VIDEO_OV2659 To compile this driver as a module, choose M here: the module will be called ov2659. +config VIDEO_OV2680 + tristate "OmniVision OV2680 sensor support" + depends on VIDEO_V4L2 && I2C + depends on MEDIA_CAMERA_SUPPORT + select V4L2_FWNODE + help + This is a Video4Linux2 sensor-level driver for the OmniVision + OV2680 camera. + + To compile this driver as a module, choose M here: the + module will be called OV2680. + config VIDEO_OV2685 tristate "OmniVision OV2685 sensor support" depends on VIDEO_V4L2 && I2C && MEDIA_CONTROLLER diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile index 7c8741d42e78..02dd0459ea8a 100644 --- a/drivers/media/i2c/Makefile +++ b/drivers/media/i2c/Makefile @@ -56,6 +56,7 @@ obj-$(CONFIG_VIDEO_SONY_BTF_MPX) += sony-btf-mpx.o obj-$(CONFIG_VIDEO_UPD64031A) += upd64031a.o obj-$(CONFIG_VIDEO_UPD64083) += upd64083.o +obj-$(CONFIG_VIDEO_OV2685) += ov2680.o obj-$(CONFIG_VIDEO_OV2685) += ov2685.o obj-$(CONFIG_VIDEO_OV2718) += ov2718.o obj-$(CONFIG_VIDEO_OV2735) += ov2735.o diff --git a/drivers/media/i2c/ov2680.c b/drivers/media/i2c/ov2680.c new file mode 100644 index 000000000000..bf8274d552c4 --- /dev/null +++ b/drivers/media/i2c/ov2680.c @@ -0,0 +1,1332 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * ov2680 driver + * + * Copyright (C) 2017 Fuzhou Rockchip Electronics Co., Ltd. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +/* verify default register values */ +//#define CHECK_REG_VALUE + +#define DRIVER_VERSION KERNEL_VERSION(0, 0x01, 0x0) + +#ifndef V4L2_CID_DIGITAL_GAIN +#define V4L2_CID_DIGITAL_GAIN V4L2_CID_GAIN +#endif + +/* pixel rate = link frequency * 2 * lanes / BITS_PER_SAMPLE */ +#define MIPI_FREQ 330000000U +#define OV2680_PIXEL_RATE (330000000LL * 1LL * 2LL / 10) +#define OV2680_XVCLK_FREQ 24000000 + +#define CHIP_ID 0x2680 +#define OV2680_REG_CHIP_ID 0x300a + +#define OV2680_REG_CTRL_MODE 0x0100 +#define OV2680_MODE_SW_STANDBY 0x00 +#define OV2680_MODE_STREAMING 0x01 + +#define OV2680_REG_EXPOSURE 0x3500 +#define OV2680_EXPOSURE_MIN 4 +#define OV2680_EXPOSURE_STEP 1 +#define OV2680_VTS_MAX 0x7fff + +#define OV2680_REG_ANALOG_GAIN 0x350a +#define ANALOG_GAIN_MIN 0x10 +#define ANALOG_GAIN_MAX 0xf8 +#define ANALOG_GAIN_STEP 1 +#define ANALOG_GAIN_DEFAULT 0xf8 +#define OV2680_REG_GAIN_H 0x350a +#define OV2680_REG_GAIN_L 0x350b +#define OV2680_GAIN_L_MASK 0xff +#define OV2680_GAIN_H_MASK 0x07 +#define OV2680_DIGI_GAIN_H_SHIFT 8 + +#define OV2680_DIGI_GAIN_MIN 0 +#define OV2680_DIGI_GAIN_MAX (0x4000 - 1) +#define OV2680_DIGI_GAIN_STEP 1 +#define OV2680_DIGI_GAIN_DEFAULT 1024 + +#define OV2680_REG_TEST_PATTERN 0x5080 +#define OV2680_TEST_PATTERN_ENABLE 0x80 +#define OV2680_TEST_PATTERN_DISABLE 0x0 + +#define OV2680_REG_VTS 0x380e + +#define REG_NULL 0xFFFF + +#define OV2680_REG_VALUE_08BIT 1 +#define OV2680_REG_VALUE_16BIT 2 +#define OV2680_REG_VALUE_24BIT 3 + +#define OV2680_LANES 1 +#define OV2680_BITS_PER_SAMPLE 10 + +#define OF_CAMERA_PINCTRL_STATE_DEFAULT "rockchip,camera_default" +#define OF_CAMERA_PINCTRL_STATE_SLEEP "rockchip,camera_sleep" + +#define OV2680_NAME "ov2680" + +static const char * const ov2680_supply_names[] = { + "avdd", /* Analog power */ + "dovdd", /* Digital I/O power */ + "dvdd", /* Digital core power */ +}; + +#define OV2680_NUM_SUPPLIES ARRAY_SIZE(ov2680_supply_names) + +struct regval { + u16 addr; + u8 val; +}; + +struct ov2680_mode { + u32 width; + u32 height; + struct v4l2_fract max_fps; + u32 hts_def; + u32 vts_def; + u32 exp_def; + const struct regval *reg_list; +}; + +struct ov2680 { + struct i2c_client *client; + struct clk *xvclk; + struct gpio_desc *power_gpio; + struct gpio_desc *reset_gpio; + struct gpio_desc *pwdn_gpio; + struct regulator_bulk_data supplies[OV2680_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; + const struct ov2680_mode *cur_mode; + unsigned int lane_num; + unsigned int cfg_num; + unsigned int pixel_rate; + u32 module_index; + const char *module_facing; + const char *module_name; + const char *len_name; +}; + +#define to_ov2680(sd) container_of(sd, struct ov2680, subdev) + +/* + * Xclk 24Mhz + * Pclk 66Mhz + * linelength 1700(0x6a4) + * framelength 1294(0x50e) + * grabwindow_width 1600 + * grabwindow_height 1200 + * max_framerate 30fps + * mipi_datarate per lane 660Mbps + */ +static const struct regval ov2680_global_regs[] = { + {0x0100, 0x00}, + {0x0103, 0x01}, + {0x3002, 0x00}, + {0x3016, 0x1c}, + {0x3018, 0x44}, + {0x3020, 0x00}, + {0x3080, 0x02}, + {0x3082, 0x37}, + {0x3084, 0x09}, + {0x3085, 0x04}, + {0x3086, 0x01}, + {0x3501, 0x26}, + {0x3502, 0x40}, + {0x3503, 0x03}, + {0x350b, 0x36}, + {0x3600, 0xb4}, + {0x3603, 0x35}, + {0x3604, 0x24}, + {0x3605, 0x00}, + {0x3620, 0x26}, + {0x3621, 0x37}, + {0x3622, 0x04}, + {0x3628, 0x00}, + {0x3705, 0x3c}, + {0x370c, 0x50}, + {0x370d, 0xc0}, + {0x3718, 0x88}, + {0x3720, 0x00}, + {0x3721, 0x00}, + {0x3722, 0x00}, + {0x3723, 0x00}, + {0x3738, 0x00}, + {0x370a, 0x23}, + {0x3717, 0x58}, + {0x3781, 0x80}, + {0x3784, 0x0c}, + {0x3789, 0x60}, + {0x3800, 0x00}, + {0x3801, 0x00}, + {0x3802, 0x00}, + {0x3803, 0x00}, + {0x3804, 0x06}, + {0x3805, 0x4f}, + {0x3806, 0x04}, + {0x3807, 0xbf}, + {0x3808, 0x03}, + {0x3809, 0x20}, + {0x380a, 0x02}, + {0x380b, 0x58}, + {0x380c, 0x06}, + {0x380d, 0xac}, + {0x380e, 0x02}, + {0x380f, 0x84}, + {0x3810, 0x00}, + {0x3811, 0x04}, + {0x3812, 0x00}, + {0x3813, 0x04}, + {0x3814, 0x31}, + {0x3815, 0x31}, + {0x3819, 0x04}, + {0x3820, 0xc2}, + {0x3821, 0x01}, + {0x4000, 0x81}, + {0x4001, 0x40}, + {0x4008, 0x00}, + {0x4009, 0x03}, + {0x4602, 0x02}, + {0x481f, 0x36}, + {0x4825, 0x36}, + {0x4837, 0x30}, + {0x5002, 0x30}, + {0x5080, 0x00}, + {0x5081, 0x41}, + {REG_NULL, 0x00}, + //{0x0100, 0x01}, + + {REG_NULL, 0x00}, +}; + +/* + * Xclk 24Mhz + * Pclk 66Mhz + * linelength 1700(0x6a4) + * framelength 1294(0x50e) + * grabwindow_width 1600 + * grabwindow_height 1200 + * max_framerate 30fps + * mipi_datarate per lane 660Mbps + */ +static const struct regval ov2680_1600x1200_regs[] = { + // 1600x1200 30fps 1 lane MIPI 660Mbps/lane + {0x3086, 0x00}, + {0x3620, 0x26}, + {0x3621, 0x37}, + {0x3622, 0x04}, + {0x370a, 0x21}, + {0x370d, 0xc0}, + {0x3718, 0x88}, + {0x3721, 0x00}, + {0x3722, 0x00}, + {0x3723, 0x00}, + {0x3738, 0x00}, + {0x3803, 0x00}, + {0x3807, 0xbf}, + {0x3808, 0x06}, + {0x3809, 0x40}, + {0x380a, 0x04}, + {0x380b, 0xb0}, + {0x380c, 0x06}, + {0x380d, 0xa4}, + {0x380e, 0x05}, + {0x380f, 0x0e}, + {0x3811, 0x08}, + {0x3813, 0x08}, + {0x3814, 0x11}, + {0x3815, 0x11}, + {0x3820, 0xc0}, + {0x3821, 0x00}, + {0x4008, 0x02}, + {0x4009, 0x09}, + {0x4837, 0x18}, + //{0x0100, 0x01}, + + {REG_NULL, 0x00}, +}; + +static const struct ov2680_mode supported_modes_1lane[] = { + { + .width = 1600, + .height = 1200, + .max_fps = { + .numerator = 10000, + .denominator = 300000, + }, + .exp_def = 0x0500, + .hts_def = 0x06a4, + .vts_def = 0x050e, + .reg_list = ov2680_1600x1200_regs, + }, +}; + +static const struct ov2680_mode *supported_modes; + +static const s64 link_freq_menu_items[] = { + MIPI_FREQ +}; + +static const char * const ov2680_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 ov2680_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; + + dev_dbg(&client->dev, "write reg(0x%x val:0x%06x)!\n", reg, val); + + 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) { + dev_err(&client->dev, + "write reg(0x%x val:0x%x)failed !\n", reg, val); + return -EIO; + } + return 0; +} + +static int ov2680_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 = ov2680_write_reg(client, regs[i].addr, + OV2680_REG_VALUE_08BIT, regs[i].val); + + return ret; +} + +/* Read registers up to 4 at a time */ +static int ov2680_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; +} + +/* Check Register value */ +#ifdef CHECK_REG_VALUE +static int ov2680_reg_verify(struct i2c_client *client, + const struct regval *regs) +{ + u32 i; + int ret = 0; + u32 value; + + for (i = 0; ret == 0 && regs[i].addr != REG_NULL; i++) { + ret = ov2680_read_reg(client, regs[i].addr, + OV2680_REG_VALUE_08BIT, &value); + if (value != regs[i].val) { + dev_info(&client->dev, "%s:0x%04x is 0x%08x instead of 0x%08x\n", + __func__, regs[i].addr, value, regs[i].val); + } + } + return ret; +} +#endif + +static int ov2680_get_reso_dist(const struct ov2680_mode *mode, + struct v4l2_mbus_framefmt *framefmt) +{ + return abs(mode->width - framefmt->width) + + abs(mode->height - framefmt->height); +} + +static const struct ov2680_mode * +ov2680_find_best_fit(struct ov2680 *ov2680, + 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 < ov2680->cfg_num; i++) { + dist = ov2680_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 ov2680_set_fmt(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_format *fmt) +{ + struct ov2680 *ov2680 = to_ov2680(sd); + const struct ov2680_mode *mode; + s64 h_blank, vblank_def; + + mutex_lock(&ov2680->mutex); + + mode = ov2680_find_best_fit(ov2680, fmt); + fmt->format.code = MEDIA_BUS_FMT_SBGGR10_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(&ov2680->mutex); + return -ENOTTY; +#endif + } else { + ov2680->cur_mode = mode; + h_blank = mode->hts_def - mode->width; + __v4l2_ctrl_modify_range(ov2680->hblank, h_blank, + h_blank, 1, h_blank); + vblank_def = mode->vts_def - mode->height; + __v4l2_ctrl_modify_range(ov2680->vblank, vblank_def, + OV2680_VTS_MAX - mode->height, + 1, vblank_def); + } + + mutex_unlock(&ov2680->mutex); + + return 0; +} + +static int ov2680_get_fmt(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_format *fmt) +{ + struct ov2680 *ov2680 = to_ov2680(sd); + const struct ov2680_mode *mode = ov2680->cur_mode; + + mutex_lock(&ov2680->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(&ov2680->mutex); + return -ENOTTY; +#endif + } else { + fmt->format.width = mode->width; + fmt->format.height = mode->height; + fmt->format.code = MEDIA_BUS_FMT_SBGGR10_1X10; + fmt->format.field = V4L2_FIELD_NONE; + } + mutex_unlock(&ov2680->mutex); + + return 0; +} + +static int ov2680_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_SBGGR10_1X10; + + return 0; +} + +static int ov2680_enum_frame_sizes(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_frame_size_enum *fse) +{ + struct ov2680 *ov2680 = to_ov2680(sd); + + if (fse->index >= ov2680->cfg_num) + return -EINVAL; + + if (fse->code != MEDIA_BUS_FMT_SBGGR10_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 ov2680_enable_test_pattern(struct ov2680 *ov2680, u32 pattern) +{ + u32 val; + + if (pattern) + val = (pattern - 1) | OV2680_TEST_PATTERN_ENABLE; + else + val = OV2680_TEST_PATTERN_DISABLE; + + return ov2680_write_reg(ov2680->client, OV2680_REG_TEST_PATTERN, + OV2680_REG_VALUE_08BIT, val); +} + +static int ov2680_g_frame_interval(struct v4l2_subdev *sd, + struct v4l2_subdev_frame_interval *fi) +{ + struct ov2680 *ov2680 = to_ov2680(sd); + const struct ov2680_mode *mode = ov2680->cur_mode; + + mutex_lock(&ov2680->mutex); + fi->interval = mode->max_fps; + mutex_unlock(&ov2680->mutex); + + return 0; +} + +static void ov2680_get_module_inf(struct ov2680 *ov2680, + struct rkmodule_inf *inf) +{ + memset(inf, 0, sizeof(*inf)); + strlcpy(inf->base.sensor, OV2680_NAME, sizeof(inf->base.sensor)); + strlcpy(inf->base.module, ov2680->module_name, + sizeof(inf->base.module)); + strlcpy(inf->base.lens, ov2680->len_name, sizeof(inf->base.lens)); +} + +static long ov2680_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg) +{ + struct ov2680 *ov2680 = to_ov2680(sd); + long ret = 0; + + switch (cmd) { + case RKMODULE_GET_MODULE_INFO: + ov2680_get_module_inf(ov2680, (struct rkmodule_inf *)arg); + break; + default: + ret = -ENOIOCTLCMD; + break; + } + + return ret; +} + +#ifdef CONFIG_COMPAT +static long ov2680_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 = ov2680_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 = ov2680_ioctl(sd, cmd, cfg); + kfree(cfg); + break; + default: + ret = -ENOIOCTLCMD; + break; + } + + return ret; +} +#endif + +static int __ov2680_start_stream(struct ov2680 *ov2680) +{ + int ret; + + ret = ov2680_write_array(ov2680->client, ov2680->cur_mode->reg_list); + if (ret) + return ret; + +#ifdef CHECK_REG_VALUE + usleep_range(10000, 20000); + /* verify default values to make sure everything has */ + /* been written correctly as expected */ + dev_info(&ov2680->client->dev, "%s:Check register value!\n", + __func__); + ret = ov2680_reg_verify(ov2680->client, ov2680_global_regs); + if (ret) + return ret; + + ret = ov2680_reg_verify(ov2680->client, ov2680->cur_mode->reg_list); + if (ret) + return ret; +#endif + + /* In case these controls are set before streaming */ + mutex_unlock(&ov2680->mutex); + ret = v4l2_ctrl_handler_setup(&ov2680->ctrl_handler); + mutex_lock(&ov2680->mutex); + if (ret) + return ret; + ret = ov2680_write_reg(ov2680->client, OV2680_REG_CTRL_MODE, + OV2680_REG_VALUE_08BIT, OV2680_MODE_STREAMING); + return ret; +} + +static int __ov2680_stop_stream(struct ov2680 *ov2680) +{ + return ov2680_write_reg(ov2680->client, OV2680_REG_CTRL_MODE, + OV2680_REG_VALUE_08BIT, OV2680_MODE_SW_STANDBY); +} + +static int ov2680_s_stream(struct v4l2_subdev *sd, int on) +{ + struct ov2680 *ov2680 = to_ov2680(sd); + struct i2c_client *client = ov2680->client; + int ret = 0; + + dev_info(&client->dev, "%s: on: %d, %dx%d@%d\n", __func__, on, + ov2680->cur_mode->width, + ov2680->cur_mode->height, + ov2680->cur_mode->max_fps.denominator); + + mutex_lock(&ov2680->mutex); + on = !!on; + if (on == ov2680->streaming) + goto unlock_and_return; + + if (on) { + dev_info(&client->dev, "stream on!!!\n"); + ret = __ov2680_start_stream(ov2680); + if (ret) { + v4l2_err(sd, "start stream failed while write regs\n"); + pm_runtime_put(&client->dev); + goto unlock_and_return; + } + } else { + dev_info(&client->dev, "stream off!!!\n"); + __ov2680_stop_stream(ov2680); + } + + ov2680->streaming = on; + +unlock_and_return: + mutex_unlock(&ov2680->mutex); + + return ret; +} + +/* Calculate the delay in us by clock rate and clock cycles */ +static inline u32 ov2680_cal_delay(u32 cycles) +{ + return DIV_ROUND_UP(cycles, OV2680_XVCLK_FREQ / 1000 / 1000); +} + +static int __ov2680_power_on(struct ov2680 *ov2680) +{ + int ret; + u32 delay_us; + struct device *dev = &ov2680->client->dev; + + if (!IS_ERR(ov2680->power_gpio)) + gpiod_set_value_cansleep(ov2680->power_gpio, 1); + + usleep_range(1000, 2000); + + if (!IS_ERR_OR_NULL(ov2680->pins_default)) { + ret = pinctrl_select_state(ov2680->pinctrl, + ov2680->pins_default); + if (ret < 0) + dev_err(dev, "could not set pins\n"); + } + + ret = clk_prepare_enable(ov2680->xvclk); + if (ret < 0) { + dev_err(dev, "Failed to enable xvclk\n"); + return ret; + } + + if (!IS_ERR(ov2680->reset_gpio)) + gpiod_set_value_cansleep(ov2680->reset_gpio, 1); + + ret = regulator_bulk_enable(OV2680_NUM_SUPPLIES, ov2680->supplies); + if (ret < 0) { + dev_err(dev, "Failed to enable regulators\n"); + goto disable_clk; + } + + if (!IS_ERR(ov2680->reset_gpio)) + gpiod_set_value_cansleep(ov2680->reset_gpio, 0); + + if (!IS_ERR(ov2680->pwdn_gpio)) + gpiod_set_value_cansleep(ov2680->pwdn_gpio, 1); + + /* 8192 cycles prior to first SCCB transaction */ + delay_us = ov2680_cal_delay(8192); + usleep_range(delay_us, delay_us * 2); + + return 0; + +disable_clk: + clk_disable_unprepare(ov2680->xvclk); + + return ret; +} + +static void __ov2680_power_off(struct ov2680 *ov2680) +{ + int ret; + struct device *dev = &ov2680->client->dev; + + if (!IS_ERR(ov2680->pwdn_gpio)) + gpiod_set_value_cansleep(ov2680->pwdn_gpio, 0); + clk_disable_unprepare(ov2680->xvclk); + if (!IS_ERR(ov2680->reset_gpio)) + gpiod_set_value_cansleep(ov2680->reset_gpio, 1); + if (!IS_ERR_OR_NULL(ov2680->pins_sleep)) { + ret = pinctrl_select_state(ov2680->pinctrl, + ov2680->pins_sleep); + if (ret < 0) + dev_dbg(dev, "could not set pins\n"); + } + if (!IS_ERR(ov2680->power_gpio)) + gpiod_set_value_cansleep(ov2680->power_gpio, 0); + + regulator_bulk_disable(OV2680_NUM_SUPPLIES, ov2680->supplies); +} + +static int ov2680_runtime_resume(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct ov2680 *ov2680 = to_ov2680(sd); + + return __ov2680_power_on(ov2680); +} + +static int ov2680_runtime_suspend(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct ov2680 *ov2680 = to_ov2680(sd); + + __ov2680_power_off(ov2680); + + return 0; +} + +#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API +static int ov2680_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) +{ + struct ov2680 *ov2680 = to_ov2680(sd); + struct v4l2_mbus_framefmt *try_fmt = + v4l2_subdev_get_try_format(sd, fh->pad, 0); + const struct ov2680_mode *def_mode = &supported_modes[0]; + + mutex_lock(&ov2680->mutex); + /* Initialize try_fmt */ + try_fmt->width = def_mode->width; + try_fmt->height = def_mode->height; + try_fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10; + try_fmt->field = V4L2_FIELD_NONE; + + mutex_unlock(&ov2680->mutex); + /* No crop or compose */ + + return 0; +} +#endif + +static int ov2680_init(struct v4l2_subdev *sd) +{ + int ret; + struct ov2680 *ov2680 = to_ov2680(sd); + struct i2c_client *client = ov2680->client; + + dev_info(&client->dev, "%s(%d)\n", __func__, __LINE__); + ret = ov2680_write_array(ov2680->client, ov2680_global_regs); + return ret; +} + +static int ov2680_power(struct v4l2_subdev *sd, int on) +{ + int ret; + struct ov2680 *ov2680 = to_ov2680(sd); + struct i2c_client *client = ov2680->client; + struct device *dev = &ov2680->client->dev; + + dev_info(&client->dev, "%s(%d) on(%d)\n", __func__, __LINE__, on); + if (on) { + ret = pm_runtime_get_sync(&client->dev); + if (ret < 0) { + pm_runtime_put_noidle(&client->dev); + return ret; + } + ret = ov2680_init(sd); + usleep_range(5000, 10000); + if (ret) + dev_err(dev, "init error\n"); + } else { + pm_runtime_put(&client->dev); + } + return 0; +} + +static const struct dev_pm_ops ov2680_pm_ops = { + SET_RUNTIME_PM_OPS(ov2680_runtime_suspend, + ov2680_runtime_resume, NULL) +}; + +#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API +static const struct v4l2_subdev_internal_ops ov2680_internal_ops = { + .open = ov2680_open, +}; +#endif + +static const struct v4l2_subdev_core_ops ov2680_core_ops = { + .ioctl = ov2680_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl32 = ov2680_compat_ioctl32, +#endif + .s_power = ov2680_power, +}; + +static const struct v4l2_subdev_video_ops ov2680_video_ops = { + .s_stream = ov2680_s_stream, + .g_frame_interval = ov2680_g_frame_interval, +}; + +static const struct v4l2_subdev_pad_ops ov2680_pad_ops = { + .enum_mbus_code = ov2680_enum_mbus_code, + .enum_frame_size = ov2680_enum_frame_sizes, + .get_fmt = ov2680_get_fmt, + .set_fmt = ov2680_set_fmt, +}; + +static const struct v4l2_subdev_ops ov2680_subdev_ops = { + .core = &ov2680_core_ops, + .video = &ov2680_video_ops, + .pad = &ov2680_pad_ops, +}; + +static int ov2680_set_ctrl(struct v4l2_ctrl *ctrl) +{ + struct ov2680 *ov2680 = container_of(ctrl->handler, + struct ov2680, ctrl_handler); + struct i2c_client *client = ov2680->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 = ov2680->cur_mode->height + ctrl->val - 4; + __v4l2_ctrl_modify_range(ov2680->exposure, + ov2680->exposure->minimum, max, + ov2680->exposure->step, + ov2680->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 = ov2680_write_reg(ov2680->client, OV2680_REG_EXPOSURE, + OV2680_REG_VALUE_24BIT, ctrl->val << 4); + + break; + case V4L2_CID_ANALOGUE_GAIN: + ret = ov2680_write_reg(ov2680->client, OV2680_REG_GAIN_L, + OV2680_REG_VALUE_08BIT, + ctrl->val & OV2680_GAIN_L_MASK); + ret |= ov2680_write_reg(ov2680->client, OV2680_REG_GAIN_H, + OV2680_REG_VALUE_08BIT, + (ctrl->val >> OV2680_DIGI_GAIN_H_SHIFT) & + OV2680_GAIN_H_MASK); + break; + case V4L2_CID_VBLANK: + + ret = ov2680_write_reg(ov2680->client, OV2680_REG_VTS, + OV2680_REG_VALUE_16BIT, + ctrl->val + ov2680->cur_mode->height); + break; + case V4L2_CID_TEST_PATTERN: + ret = ov2680_enable_test_pattern(ov2680, 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 ov2680_ctrl_ops = { + .s_ctrl = ov2680_set_ctrl, +}; + +static int ov2680_initialize_controls(struct ov2680 *ov2680) +{ + const struct ov2680_mode *mode; + struct v4l2_ctrl_handler *handler; + struct v4l2_ctrl *ctrl; + s64 exposure_max, vblank_def; + u32 h_blank; + int ret; + + handler = &ov2680->ctrl_handler; + mode = ov2680->cur_mode; + ret = v4l2_ctrl_handler_init(handler, 8); + if (ret) + return ret; + handler->lock = &ov2680->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, ov2680->pixel_rate, 1, ov2680->pixel_rate); + + h_blank = mode->hts_def - mode->width; + ov2680->hblank = v4l2_ctrl_new_std(handler, NULL, V4L2_CID_HBLANK, + h_blank, h_blank, 1, h_blank); + if (ov2680->hblank) + ov2680->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; + + vblank_def = mode->vts_def - mode->height; + ov2680->vblank = v4l2_ctrl_new_std(handler, &ov2680_ctrl_ops, + V4L2_CID_VBLANK, vblank_def, + OV2680_VTS_MAX - mode->height, + 1, vblank_def); + + exposure_max = mode->vts_def - 4; + ov2680->exposure = v4l2_ctrl_new_std(handler, &ov2680_ctrl_ops, + V4L2_CID_EXPOSURE, OV2680_EXPOSURE_MIN, + exposure_max, OV2680_EXPOSURE_STEP, + mode->exp_def); + + ov2680->anal_gain = v4l2_ctrl_new_std(handler, &ov2680_ctrl_ops, + V4L2_CID_ANALOGUE_GAIN, ANALOG_GAIN_MIN, + ANALOG_GAIN_MAX, ANALOG_GAIN_STEP, + ANALOG_GAIN_DEFAULT); + + /* Digital gain */ + ov2680->digi_gain = v4l2_ctrl_new_std(handler, &ov2680_ctrl_ops, + V4L2_CID_DIGITAL_GAIN, OV2680_DIGI_GAIN_MIN, + OV2680_DIGI_GAIN_MAX, OV2680_DIGI_GAIN_STEP, + OV2680_DIGI_GAIN_DEFAULT); + + ov2680->test_pattern = v4l2_ctrl_new_std_menu_items(handler, + &ov2680_ctrl_ops, V4L2_CID_TEST_PATTERN, + ARRAY_SIZE(ov2680_test_pattern_menu) - 1, + 0, 0, ov2680_test_pattern_menu); + + if (handler->error) { + ret = handler->error; + dev_err(&ov2680->client->dev, + "Failed to init controls(%d)\n", ret); + goto err_free_handler; + } + + ov2680->subdev.ctrl_handler = handler; + + return 0; + +err_free_handler: + v4l2_ctrl_handler_free(handler); + + return ret; +} + +static int ov2680_check_sensor_id(struct ov2680 *ov2680, + struct i2c_client *client) +{ + struct device *dev = &ov2680->client->dev; + u32 id = 0; + int ret; + + ret = ov2680_read_reg(client, OV2680_REG_CHIP_ID, + OV2680_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 ov2680_configure_regulators(struct ov2680 *ov2680) +{ + unsigned int i; + + for (i = 0; i < OV2680_NUM_SUPPLIES; i++) + ov2680->supplies[i].supply = ov2680_supply_names[i]; + + return devm_regulator_bulk_get(&ov2680->client->dev, + OV2680_NUM_SUPPLIES, + ov2680->supplies); +} + +static int ov2680_parse_of(struct ov2680 *ov2680) +{ + struct device *dev = &ov2680->client->dev; + struct device_node *endpoint; + struct fwnode_handle *fwnode; + int rval; + + endpoint = of_graph_get_next_endpoint(dev->of_node, NULL); + if (!endpoint) { + dev_err(dev, "Failed to get endpoint\n"); + return -EINVAL; + } + fwnode = of_fwnode_handle(endpoint); + rval = fwnode_property_read_u32_array(fwnode, "data-lanes", NULL, 0); + if (rval <= 0) { + dev_warn(dev, " Get mipi lane num failed!\n"); + return -1; + } + + ov2680->lane_num = rval; + if (1 == ov2680->lane_num) { + ov2680->cur_mode = &supported_modes_1lane[0]; + supported_modes = supported_modes_1lane; + ov2680->cfg_num = ARRAY_SIZE(supported_modes_1lane); + + /* pixel rate = link frequency * 2 * lanes / BITS_PER_SAMPLE */ + ov2680->pixel_rate = MIPI_FREQ * 2U * ov2680->lane_num / 10U; + dev_info(dev, "lane_num(%d) pixel_rate(%u)\n", + ov2680->lane_num, ov2680->pixel_rate); + } else { + dev_err(dev, "unsupported lane_num(%d)\n", ov2680->lane_num); + return -1; + } + return 0; +} + +static int ov2680_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct device *dev = &client->dev; + struct device_node *node = dev->of_node; + struct ov2680 *ov2680; + struct v4l2_subdev *sd; + char facing[2] = "b"; + int ret; + + dev_info(dev, "driver version: %02x.%02x.%02x", + DRIVER_VERSION >> 16, + (DRIVER_VERSION & 0xff00) >> 8, + DRIVER_VERSION & 0x00ff); + + ov2680 = devm_kzalloc(dev, sizeof(*ov2680), GFP_KERNEL); + if (!ov2680) + return -ENOMEM; + + ret = of_property_read_u32(node, RKMODULE_CAMERA_MODULE_INDEX, + &ov2680->module_index); + if (ret) { + dev_warn(dev, "could not get module index!\n"); + ov2680->module_index = 0; + } + + ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_FACING, + &ov2680->module_facing); + ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_NAME, + &ov2680->module_name); + ret |= of_property_read_string(node, RKMODULE_CAMERA_LENS_NAME, + &ov2680->len_name); + if (ret) { + dev_err(dev, "could not get module information!\n"); + return -EINVAL; + } + + ov2680->client = client; + + ov2680->xvclk = devm_clk_get(dev, "xvclk"); + if (IS_ERR(ov2680->xvclk)) { + dev_err(dev, "Failed to get xvclk\n"); + return -EINVAL; + } + ret = clk_set_rate(ov2680->xvclk, OV2680_XVCLK_FREQ); + if (ret < 0) { + dev_err(dev, "Failed to set xvclk rate (24MHz)\n"); + return ret; + } + if (clk_get_rate(ov2680->xvclk) != OV2680_XVCLK_FREQ) + dev_warn(dev, "xvclk mismatched, modes are based on 24MHz\n"); + + ov2680->power_gpio = devm_gpiod_get(dev, "power", GPIOD_OUT_LOW); + if (IS_ERR(ov2680->power_gpio)) + dev_warn(dev, "Failed to get power-gpios, maybe no use\n"); + + ov2680->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); + if (IS_ERR(ov2680->reset_gpio)) + dev_warn(dev, "Failed to get reset-gpios, maybe no use\n"); + + ov2680->pwdn_gpio = devm_gpiod_get(dev, "pwdn", GPIOD_OUT_LOW); + if (IS_ERR(ov2680->pwdn_gpio)) + dev_warn(dev, "Failed to get pwdn-gpios\n"); + + ret = ov2680_configure_regulators(ov2680); + if (ret) { + dev_err(dev, "Failed to get power regulators\n"); + return ret; + } + ret = ov2680_parse_of(ov2680); + if (ret != 0) + return -EINVAL; + + ov2680->pinctrl = devm_pinctrl_get(dev); + if (!IS_ERR(ov2680->pinctrl)) { + ov2680->pins_default = + pinctrl_lookup_state(ov2680->pinctrl, + OF_CAMERA_PINCTRL_STATE_DEFAULT); + if (IS_ERR(ov2680->pins_default)) + dev_err(dev, "could not get default pinstate\n"); + + ov2680->pins_sleep = + pinctrl_lookup_state(ov2680->pinctrl, + OF_CAMERA_PINCTRL_STATE_SLEEP); + if (IS_ERR(ov2680->pins_sleep)) + dev_err(dev, "could not get sleep pinstate\n"); + } + + mutex_init(&ov2680->mutex); + + sd = &ov2680->subdev; + v4l2_i2c_subdev_init(sd, client, &ov2680_subdev_ops); + ret = ov2680_initialize_controls(ov2680); + if (ret) + goto err_destroy_mutex; + + ret = __ov2680_power_on(ov2680); + if (ret) + goto err_free_handler; + + ret = ov2680_check_sensor_id(ov2680, client); + if (ret < 0) { + dev_info(&client->dev, "%s(%d) Check id failed\n" + "check following information:\n" + "Power/PowerDown/Reset/Mclk/I2cBus !!\n", + __func__, __LINE__); + goto err_power_off; + } + +#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API + sd->internal_ops = &ov2680_internal_ops; + sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; +#endif +#if defined(CONFIG_MEDIA_CONTROLLER) + ov2680->pad.flags = MEDIA_PAD_FL_SOURCE; + sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; + ret = media_entity_init(&sd->entity, 1, &ov2680->pad, 0); + if (ret < 0) + goto err_power_off; +#endif + + memset(facing, 0, sizeof(facing)); + if (strcmp(ov2680->module_facing, "back") == 0) + facing[0] = 'b'; + else + facing[0] = 'f'; + + snprintf(sd->name, sizeof(sd->name), "m%02d_%s_%s %s", + ov2680->module_index, facing, + OV2680_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: + __ov2680_power_off(ov2680); +err_free_handler: + v4l2_ctrl_handler_free(&ov2680->ctrl_handler); +err_destroy_mutex: + mutex_destroy(&ov2680->mutex); + + return ret; +} + +static int ov2680_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct ov2680 *ov2680 = to_ov2680(sd); + + v4l2_async_unregister_subdev(sd); +#if defined(CONFIG_MEDIA_CONTROLLER) + media_entity_cleanup(&sd->entity); +#endif + v4l2_ctrl_handler_free(&ov2680->ctrl_handler); + mutex_destroy(&ov2680->mutex); + + pm_runtime_disable(&client->dev); + if (!pm_runtime_status_suspended(&client->dev)) + __ov2680_power_off(ov2680); + pm_runtime_set_suspended(&client->dev); + + return 0; +} + +#if IS_ENABLED(CONFIG_OF) +static const struct of_device_id ov2680_of_match[] = { + { .compatible = "ovti,ov2680" }, + {}, +}; +MODULE_DEVICE_TABLE(of, ov2680_of_match); +#endif + +static const struct i2c_device_id ov2680_match_id[] = { + { "ovti,ov2680", 0 }, + { }, +}; + +static struct i2c_driver ov2680_i2c_driver = { + .driver = { + .name = OV2680_NAME, + .pm = &ov2680_pm_ops, + .of_match_table = of_match_ptr(ov2680_of_match), + }, + .probe = &ov2680_probe, + .remove = &ov2680_remove, + .id_table = ov2680_match_id, +}; + +static int __init sensor_mod_init(void) +{ + return i2c_add_driver(&ov2680_i2c_driver); +} + +static void __exit sensor_mod_exit(void) +{ + i2c_del_driver(&ov2680_i2c_driver); +} + +device_initcall_sync(sensor_mod_init); +module_exit(sensor_mod_exit); + +MODULE_DESCRIPTION("OmniVision ov2680 sensor driver"); +MODULE_LICENSE("GPL v2");