From 88d85896c3a5ddde5360f4fa6fee6b347afc917b Mon Sep 17 00:00:00 2001 From: Su Yuefu Date: Tue, 29 Nov 2022 10:03:13 +0800 Subject: [PATCH] media: i2c: add sc2336 sensor driver Signed-off-by: Su Yuefu Change-Id: Ifc5a2353624f4acea6e4faa06ff160203e0fdb2c --- drivers/media/i2c/Kconfig | 10 + drivers/media/i2c/Makefile | 1 + drivers/media/i2c/sc2336.c | 1572 ++++++++++++++++++++++++++++++++++++ 3 files changed, 1583 insertions(+) create mode 100644 drivers/media/i2c/sc2336.c diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig index f4748c1e4dcd..ac5919e86b22 100644 --- a/drivers/media/i2c/Kconfig +++ b/drivers/media/i2c/Kconfig @@ -1938,6 +1938,16 @@ config VIDEO_SC2310 This is a Video4Linux2 sensor driver for the SmartSens SC2310 camera. +config VIDEO_SC2336 + tristate "SmartSens SC2336 sensor support" + depends on I2C && VIDEO_V4L2 + select MEDIA_CONTROLLER + select VIDEO_V4L2_SUBDEV_API + select V4L2_FWNODE + help + This is a Video4Linux2 sensor driver for the SmartSens + SC2336 camera. + config VIDEO_SC301IOT tristate "SmartSens SC301IOT sensor support" depends on I2C && VIDEO_V4L2 diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile index 52329659f200..112ff12aa443 100644 --- a/drivers/media/i2c/Makefile +++ b/drivers/media/i2c/Makefile @@ -129,6 +129,7 @@ obj-$(CONFIG_VIDEO_SC2232) += sc2232.o obj-$(CONFIG_VIDEO_SC2239) += sc2239.o obj-$(CONFIG_VIDEO_SC230AI) += sc230ai.o obj-$(CONFIG_VIDEO_SC2310) += sc2310.o +obj-$(CONFIG_VIDEO_SC2336) += sc2336.o obj-$(CONFIG_VIDEO_SC301IOT) += sc301iot.o obj-$(CONFIG_VIDEO_SC3336) += sc3336.o obj-$(CONFIG_VIDEO_SC3338) += sc3338.o diff --git a/drivers/media/i2c/sc2336.c b/drivers/media/i2c/sc2336.c new file mode 100644 index 000000000000..dde243a43200 --- /dev/null +++ b/drivers/media/i2c/sc2336.c @@ -0,0 +1,1572 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * sc2336 driver + * + * Copyright (C) 2022 Rockchip Electronics Co., Ltd. + * + * V0.0X01.0X01 first version + */ + +//#define DEBUG +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "../platform/rockchip/isp/rkisp_tb_helper.h" + +#define DRIVER_VERSION KERNEL_VERSION(0, 0x01, 0x01) + +#ifndef V4L2_CID_DIGITAL_GAIN +#define V4L2_CID_DIGITAL_GAIN V4L2_CID_GAIN +#endif + +#define SC2336_LANES 2 +#define SC2336_BITS_PER_SAMPLE 10 +#define SC2336_LINK_FREQ_405 202500000 + +#define PIXEL_RATE_WITH_405M_10BIT (SC2336_LINK_FREQ_405 * 2 * \ + SC2336_LANES / SC2336_BITS_PER_SAMPLE) + +#define CHIP_ID 0xcb3a +#define SC2336_REG_CHIP_ID 0x3107 + +#define SC2336_REG_CTRL_MODE 0x0100 +#define SC2336_MODE_SW_STANDBY 0x0 +#define SC2336_MODE_STREAMING BIT(0) + +#define SC2336_REG_EXPOSURE_H 0x3e00 +#define SC2336_REG_EXPOSURE_M 0x3e01 +#define SC2336_REG_EXPOSURE_L 0x3e02 +#define SC2336_EXPOSURE_MIN 1 +#define SC2336_EXPOSURE_STEP 1 +#define SC2336_VTS_MAX 0x7fff + +#define SC2336_REG_DIG_GAIN 0x3e06 +#define SC2336_REG_DIG_FINE_GAIN 0x3e07 +#define SC2336_REG_ANA_GAIN 0x3e09 +#define SC2336_GAIN_MIN 0x0020 +#define SC2336_GAIN_MAX (4096) //32*4*32 +#define SC2336_GAIN_STEP 1 +#define SC2336_GAIN_DEFAULT 0x80 + + +#define SC2336_REG_GROUP_HOLD 0x3812 +#define SC2336_GROUP_HOLD_START 0x00 +#define SC2336_GROUP_HOLD_END 0x30 + +#define SC2336_REG_TEST_PATTERN 0x4501 +#define SC2336_TEST_PATTERN_BIT_MASK BIT(3) + +#define SC2336_REG_VTS_H 0x320e +#define SC2336_REG_VTS_L 0x320f + +#define SC2336_FLIP_MIRROR_REG 0x3221 + +#define SC2336_FETCH_EXP_H(VAL) (((VAL) >> 12) & 0xF) +#define SC2336_FETCH_EXP_M(VAL) (((VAL) >> 4) & 0xFF) +#define SC2336_FETCH_EXP_L(VAL) (((VAL) & 0xF) << 4) + +#define SC2336_FETCH_AGAIN_H(VAL) (((VAL) >> 8) & 0x03) +#define SC2336_FETCH_AGAIN_L(VAL) ((VAL) & 0xFF) + +#define SC2336_FETCH_MIRROR(VAL, ENABLE) (ENABLE ? VAL | 0x06 : VAL & 0xf9) +#define SC2336_FETCH_FLIP(VAL, ENABLE) (ENABLE ? VAL | 0x60 : VAL & 0x9f) + +#define REG_DELAY 0xFFFE +#define REG_NULL 0xFFFF + +#define SC2336_REG_VALUE_08BIT 1 +#define SC2336_REG_VALUE_16BIT 2 +#define SC2336_REG_VALUE_24BIT 3 + +#define OF_CAMERA_PINCTRL_STATE_DEFAULT "rockchip,camera_default" +#define OF_CAMERA_PINCTRL_STATE_SLEEP "rockchip,camera_sleep" +#define SC2336_NAME "sc2336" + +static const char * const sc2336_supply_names[] = { + "avdd", /* Analog power */ + "dovdd", /* Digital I/O power */ + "dvdd", /* Digital core power */ +}; + +#define SC2336_NUM_SUPPLIES ARRAY_SIZE(sc2336_supply_names) + +struct regval { + u16 addr; + u8 val; +}; + +struct sc2336_mode { + u32 bus_fmt; + u32 width; + u32 height; + struct v4l2_fract max_fps; + u32 hts_def; + u32 vts_def; + u32 exp_def; + const struct regval *reg_list; + u32 hdr_mode; + u32 xvclk_freq; + u32 link_freq_idx; + u32 vc[PAD_MAX]; +}; + +struct sc2336 { + struct i2c_client *client; + struct clk *xvclk; + struct gpio_desc *reset_gpio; + struct regulator_bulk_data supplies[SC2336_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 *pixel_rate; + struct v4l2_ctrl *link_freq; + struct v4l2_ctrl *test_pattern; + struct mutex mutex; + bool streaming; + bool power_on; + const struct sc2336_mode *cur_mode; + u32 module_index; + const char *module_facing; + const char *module_name; + const char *len_name; + u32 cur_vts; + bool has_init_exp; + bool is_thunderboot; + bool is_first_streamoff; + struct preisp_hdrae_exp_s init_hdrae_exp; +}; + +#define to_sc2336(sd) container_of(sd, struct sc2336, subdev) + +/* + * Xclk 24Mhz + */ +static const struct regval sc2336_global_regs[] = { + {REG_NULL, 0x00}, +}; + +/* + * Xclk 24Mhz + * max_framerate 30fps + * mipi_datarate per lane 405Mbps, 2lane + */ +static const struct regval sc2336_linear_10_1920x1080_30fps_regs[] = { + {0x0103, 0x01}, + {0x0100, 0x00}, + {0x36e9, 0x80}, + {0x37f9, 0x80}, + {0x301f, 0x02}, + {0x3106, 0x05}, + {0x320c, 0x08}, + {0x320d, 0xca}, + {0x320e, 0x04}, + {0x320f, 0xb0}, + {0x3248, 0x04}, + {0x3249, 0x0b}, + {0x3253, 0x08}, + {0x3301, 0x09}, + {0x3302, 0xff}, + {0x3303, 0x10}, + {0x3306, 0x60}, + {0x3307, 0x02}, + {0x330a, 0x01}, + {0x330b, 0x10}, + {0x330c, 0x16}, + {0x330d, 0xff}, + {0x3318, 0x02}, + {0x3321, 0x0a}, + {0x3327, 0x0e}, + {0x332b, 0x12}, + {0x3333, 0x10}, + {0x3334, 0x40}, + {0x335e, 0x06}, + {0x335f, 0x0a}, + {0x3364, 0x1f}, + {0x337c, 0x02}, + {0x337d, 0x0e}, + {0x3390, 0x09}, + {0x3391, 0x0f}, + {0x3392, 0x1f}, + {0x3393, 0x20}, + {0x3394, 0x20}, + {0x3395, 0xff}, + {0x33a2, 0x04}, + {0x33b1, 0x80}, + {0x33b2, 0x68}, + {0x33b3, 0x42}, + {0x33f9, 0x70}, + {0x33fb, 0xd0}, + {0x33fc, 0x0f}, + {0x33fd, 0x1f}, + {0x349f, 0x03}, + {0x34a6, 0x0f}, + {0x34a7, 0x1f}, + {0x34a8, 0x42}, + {0x34a9, 0x06}, + {0x34aa, 0x01}, + {0x34ab, 0x23}, + {0x34ac, 0x01}, + {0x34ad, 0x84}, + {0x3630, 0xf4}, + {0x3633, 0x22}, + {0x3639, 0xf4}, + {0x363c, 0x47}, + {0x3670, 0x09}, + {0x3674, 0xf4}, + {0x3675, 0xfb}, + {0x3676, 0xed}, + {0x367c, 0x09}, + {0x367d, 0x0f}, + {0x3690, 0x33}, + {0x3691, 0x33}, + {0x3692, 0x43}, + {0x3698, 0x89}, + {0x3699, 0x96}, + {0x369a, 0xd0}, + {0x369b, 0xd0}, + {0x369c, 0x09}, + {0x369d, 0x0f}, + {0x36a2, 0x09}, + {0x36a3, 0x0f}, + {0x36a4, 0x1f}, + {0x36d0, 0x01}, + {0x36ea, 0x09}, + {0x36eb, 0x0c}, + {0x36ec, 0x1c}, + {0x36ed, 0x28}, + {0x3722, 0xe1}, + {0x3724, 0x41}, + {0x3725, 0xc1}, + {0x3728, 0x20}, + {0x37fa, 0x09}, + {0x37fb, 0x32}, + {0x37fc, 0x11}, + {0x37fd, 0x37}, + {0x3900, 0x0d}, + {0x3905, 0x98}, + {0x391b, 0x81}, + {0x391c, 0x10}, + {0x3933, 0x81}, + {0x3934, 0xc5}, + {0x3940, 0x68}, + {0x3941, 0x00}, + {0x3942, 0x01}, + {0x3943, 0xc6}, + {0x3952, 0x02}, + {0x3953, 0x0f}, + {0x3e01, 0x4a}, + {0x3e02, 0xa0}, + {0x3e08, 0x1f}, + {0x3e1b, 0x14}, + {0x440e, 0x02}, + {0x4509, 0x38}, + {0x4819, 0x06}, + {0x481b, 0x03}, + {0x481d, 0x0b}, + {0x481f, 0x03}, + {0x4821, 0x08}, + {0x4823, 0x03}, + {0x4825, 0x03}, + {0x4827, 0x03}, + {0x4829, 0x05}, + {0x5799, 0x06}, + {0x5ae0, 0xfe}, + {0x5ae1, 0x40}, + {0x5ae2, 0x30}, + {0x5ae3, 0x28}, + {0x5ae4, 0x20}, + {0x5ae5, 0x30}, + {0x5ae6, 0x28}, + {0x5ae7, 0x20}, + {0x5ae8, 0x3c}, + {0x5ae9, 0x30}, + {0x5aea, 0x28}, + {0x5aeb, 0x3c}, + {0x5aec, 0x30}, + {0x5aed, 0x28}, + {0x5aee, 0xfe}, + {0x5aef, 0x40}, + {0x5af4, 0x30}, + {0x5af5, 0x28}, + {0x5af6, 0x20}, + {0x5af7, 0x30}, + {0x5af8, 0x28}, + {0x5af9, 0x20}, + {0x5afa, 0x3c}, + {0x5afb, 0x30}, + {0x5afc, 0x28}, + {0x5afd, 0x3c}, + {0x5afe, 0x30}, + {0x5aff, 0x28}, + {0x36e9, 0x53}, + {0x37f9, 0x53}, + {REG_NULL, 0x00}, +}; + +static const struct sc2336_mode supported_modes[] = { + { + .width = 1920, + .height = 1080, + .max_fps = { + .numerator = 10000, + .denominator = 300000, + }, + .exp_def = 0x080, + .hts_def = 0x08ca, + .vts_def = 0x04b0, + .bus_fmt = MEDIA_BUS_FMT_SBGGR10_1X10, + .reg_list = sc2336_linear_10_1920x1080_30fps_regs, + .hdr_mode = NO_HDR, + .xvclk_freq = 24000000, + .link_freq_idx = 0, + .vc[PAD0] = V4L2_MBUS_CSI2_CHANNEL_0, + }, +}; + +static const s64 link_freq_menu_items[] = { + SC2336_LINK_FREQ_405, +}; + +static const char * const sc2336_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 sc2336_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 sc2336_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 = sc2336_write_reg(client, regs[i].addr, + SC2336_REG_VALUE_08BIT, regs[i].val); + + return ret; +} + +/* Read registers up to 4 at a time */ +static int sc2336_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 sc2336_set_gain_reg(struct sc2336 *sc2336, u32 gain) +{ + u32 coarse_again = 0, coarse_dgain = 0, fine_dgain = 0; + u32 gain_factor; + int ret = 0; + + gain_factor = gain * 1000 / 32; + if (gain_factor < 1000) { + coarse_again = 0x00; + coarse_dgain = 0x00; + fine_dgain = 0x80; + } else if (gain_factor < 1000 * 2) { /*1x ~ 2x gain*/ + coarse_again = 0x00; + coarse_dgain = 0x00; + fine_dgain = gain_factor * 128 / 1000; + } else if (gain_factor < 1000 * 4) { /*2x ~ 4x gain*/ + coarse_again = 0x01; + coarse_dgain = 0x00; + fine_dgain = gain_factor * 128 / 1000 / 2; + } else if (gain_factor < 1000 * 8) { /*4x ~ 8x gain*/ + coarse_again = 0x03; + coarse_dgain = 0x00; + fine_dgain = gain_factor * 128 / 1000 / 4; + } else if (gain_factor < 1000 * 16) { /*8x ~ 16x gain*/ + coarse_again = 0x07; + coarse_dgain = 0x00; + fine_dgain = gain_factor * 128 / 1000 / 8; + } else if (gain_factor < 1000 * 32) { /*16x ~ 32x gain*/ + coarse_again = 0x0f; + coarse_dgain = 0x00; + fine_dgain = gain_factor * 128 / 1000 / 16; + //open dgain begin max digital gain 4X + } else if (gain_factor < 1000 * 64) { /*32x ~ 64x gain*/ + coarse_again = 0x1f; + coarse_dgain = 0x00; + fine_dgain = gain_factor * 128 / 1000 / 32; + } else if (gain_factor < 1000 * 128) { /*64x ~ 128x gain*/ + coarse_again = 0x1f; + coarse_dgain = 0x01; + fine_dgain = gain_factor * 128 / 1000 / 64; + } else { /*max 128x gain*/ + coarse_again = 0x1f; + coarse_dgain = 0x03; + fine_dgain = 0x80; + } + dev_dbg(&sc2336->client->dev, + "total_gain: 0x%x, d_gain: 0x%x, d_fine_gain: 0x%x, c_gain: 0x%x\n", + gain, coarse_dgain, fine_dgain, coarse_again); + + ret = sc2336_write_reg(sc2336->client, + SC2336_REG_DIG_GAIN, + SC2336_REG_VALUE_08BIT, + coarse_dgain); + ret |= sc2336_write_reg(sc2336->client, + SC2336_REG_DIG_FINE_GAIN, + SC2336_REG_VALUE_08BIT, + fine_dgain); + ret |= sc2336_write_reg(sc2336->client, + SC2336_REG_ANA_GAIN, + SC2336_REG_VALUE_08BIT, + coarse_again); + + return ret; +} + +static int sc2336_get_reso_dist(const struct sc2336_mode *mode, + struct v4l2_mbus_framefmt *framefmt) +{ + return abs(mode->width - framefmt->width) + + abs(mode->height - framefmt->height); +} + +static const struct sc2336_mode * +sc2336_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 = sc2336_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 sc2336_set_fmt(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_format *fmt) +{ + struct sc2336 *sc2336 = to_sc2336(sd); + const struct sc2336_mode *mode; + s64 h_blank, vblank_def; + u64 dst_link_freq = 0; + u64 dst_pixel_rate = 0; + + mutex_lock(&sc2336->mutex); + + mode = sc2336_find_best_fit(fmt); + fmt->format.code = mode->bus_fmt; + 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(&sc2336->mutex); + return -ENOTTY; +#endif + } else { + sc2336->cur_mode = mode; + h_blank = mode->hts_def - mode->width; + __v4l2_ctrl_modify_range(sc2336->hblank, h_blank, + h_blank, 1, h_blank); + vblank_def = mode->vts_def - mode->height; + __v4l2_ctrl_modify_range(sc2336->vblank, vblank_def, + SC2336_VTS_MAX - mode->height, + 1, vblank_def); + dst_link_freq = mode->link_freq_idx; + dst_pixel_rate = (u32)link_freq_menu_items[mode->link_freq_idx] / + SC2336_BITS_PER_SAMPLE * 2 * SC2336_LANES; + __v4l2_ctrl_s_ctrl_int64(sc2336->pixel_rate, + dst_pixel_rate); + __v4l2_ctrl_s_ctrl(sc2336->link_freq, + dst_link_freq); + } + + mutex_unlock(&sc2336->mutex); + + return 0; +} + +static int sc2336_get_fmt(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_format *fmt) +{ + struct sc2336 *sc2336 = to_sc2336(sd); + const struct sc2336_mode *mode = sc2336->cur_mode; + + mutex_lock(&sc2336->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(&sc2336->mutex); + return -ENOTTY; +#endif + } else { + fmt->format.width = mode->width; + fmt->format.height = mode->height; + fmt->format.code = mode->bus_fmt; + fmt->format.field = V4L2_FIELD_NONE; + /* format info: width/height/data type/virctual channel */ + if (fmt->pad < PAD_MAX && mode->hdr_mode != NO_HDR) + fmt->reserved[0] = mode->vc[fmt->pad]; + else + fmt->reserved[0] = mode->vc[PAD0]; + } + mutex_unlock(&sc2336->mutex); + + return 0; +} + +static int sc2336_enum_mbus_code(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_mbus_code_enum *code) +{ + struct sc2336 *sc2336 = to_sc2336(sd); + + if (code->index != 0) + return -EINVAL; + code->code = sc2336->cur_mode->bus_fmt; + + return 0; +} + +static int sc2336_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 != supported_modes[0].bus_fmt) + 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 sc2336_enable_test_pattern(struct sc2336 *sc2336, u32 pattern) +{ + u32 val = 0; + int ret = 0; + + ret = sc2336_read_reg(sc2336->client, SC2336_REG_TEST_PATTERN, + SC2336_REG_VALUE_08BIT, &val); + if (pattern) + val |= SC2336_TEST_PATTERN_BIT_MASK; + else + val &= ~SC2336_TEST_PATTERN_BIT_MASK; + + ret |= sc2336_write_reg(sc2336->client, SC2336_REG_TEST_PATTERN, + SC2336_REG_VALUE_08BIT, val); + return ret; +} + +static int sc2336_g_frame_interval(struct v4l2_subdev *sd, + struct v4l2_subdev_frame_interval *fi) +{ + struct sc2336 *sc2336 = to_sc2336(sd); + const struct sc2336_mode *mode = sc2336->cur_mode; + + mutex_lock(&sc2336->mutex); + fi->interval = mode->max_fps; + mutex_unlock(&sc2336->mutex); + + return 0; +} + +static int sc2336_g_mbus_config(struct v4l2_subdev *sd, + unsigned int pad_id, + struct v4l2_mbus_config *config) +{ + struct sc2336 *sc2336 = to_sc2336(sd); + const struct sc2336_mode *mode = sc2336->cur_mode; + + u32 val = 1 << (SC2336_LANES - 1) | + V4L2_MBUS_CSI2_CHANNEL_0 | + V4L2_MBUS_CSI2_CONTINUOUS_CLOCK; + + if (mode->hdr_mode != NO_HDR) + val |= V4L2_MBUS_CSI2_CHANNEL_1; + if (mode->hdr_mode == HDR_X3) + val |= V4L2_MBUS_CSI2_CHANNEL_2; + + config->type = V4L2_MBUS_CSI2_DPHY; + config->flags = val; + + return 0; +} + +static void sc2336_get_module_inf(struct sc2336 *sc2336, + struct rkmodule_inf *inf) +{ + memset(inf, 0, sizeof(*inf)); + strscpy(inf->base.sensor, SC2336_NAME, sizeof(inf->base.sensor)); + strscpy(inf->base.module, sc2336->module_name, + sizeof(inf->base.module)); + strscpy(inf->base.lens, sc2336->len_name, sizeof(inf->base.lens)); +} + +static long sc2336_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg) +{ + struct sc2336 *sc2336 = to_sc2336(sd); + struct rkmodule_hdr_cfg *hdr; + u32 i, h, w; + long ret = 0; + u32 stream = 0; + + switch (cmd) { + case RKMODULE_GET_MODULE_INFO: + sc2336_get_module_inf(sc2336, (struct rkmodule_inf *)arg); + break; + case RKMODULE_GET_HDR_CFG: + hdr = (struct rkmodule_hdr_cfg *)arg; + hdr->esp.mode = HDR_NORMAL_VC; + hdr->hdr_mode = sc2336->cur_mode->hdr_mode; + break; + case RKMODULE_SET_HDR_CFG: + hdr = (struct rkmodule_hdr_cfg *)arg; + w = sc2336->cur_mode->width; + h = sc2336->cur_mode->height; + for (i = 0; i < ARRAY_SIZE(supported_modes); i++) { + if (w == supported_modes[i].width && + h == supported_modes[i].height && + supported_modes[i].hdr_mode == hdr->hdr_mode) { + sc2336->cur_mode = &supported_modes[i]; + break; + } + } + if (i == ARRAY_SIZE(supported_modes)) { + dev_err(&sc2336->client->dev, + "not find hdr mode:%d %dx%d config\n", + hdr->hdr_mode, w, h); + ret = -EINVAL; + } else { + w = sc2336->cur_mode->hts_def - sc2336->cur_mode->width; + h = sc2336->cur_mode->vts_def - sc2336->cur_mode->height; + __v4l2_ctrl_modify_range(sc2336->hblank, w, w, 1, w); + __v4l2_ctrl_modify_range(sc2336->vblank, h, + SC2336_VTS_MAX - sc2336->cur_mode->height, 1, h); + } + break; + case PREISP_CMD_SET_HDRAE_EXP: + break; + case RKMODULE_SET_QUICK_STREAM: + + stream = *((u32 *)arg); + + if (stream) + ret = sc2336_write_reg(sc2336->client, SC2336_REG_CTRL_MODE, + SC2336_REG_VALUE_08BIT, SC2336_MODE_STREAMING); + else + ret = sc2336_write_reg(sc2336->client, SC2336_REG_CTRL_MODE, + SC2336_REG_VALUE_08BIT, SC2336_MODE_SW_STANDBY); + break; + default: + ret = -ENOIOCTLCMD; + break; + } + + return ret; +} + +#ifdef CONFIG_COMPAT +static long sc2336_compat_ioctl32(struct v4l2_subdev *sd, + unsigned int cmd, unsigned long arg) +{ + void __user *up = compat_ptr(arg); + struct rkmodule_inf *inf; + struct rkmodule_hdr_cfg *hdr; + struct preisp_hdrae_exp_s *hdrae; + long ret; + u32 stream = 0; + + switch (cmd) { + case RKMODULE_GET_MODULE_INFO: + inf = kzalloc(sizeof(*inf), GFP_KERNEL); + if (!inf) { + ret = -ENOMEM; + return ret; + } + + ret = sc2336_ioctl(sd, cmd, inf); + if (!ret) { + if (copy_to_user(up, inf, sizeof(*inf))) + ret = -EFAULT; + } + kfree(inf); + break; + case RKMODULE_GET_HDR_CFG: + hdr = kzalloc(sizeof(*hdr), GFP_KERNEL); + if (!hdr) { + ret = -ENOMEM; + return ret; + } + + ret = sc2336_ioctl(sd, cmd, hdr); + if (!ret) { + if (copy_to_user(up, hdr, sizeof(*hdr))) + ret = -EFAULT; + } + kfree(hdr); + break; + case RKMODULE_SET_HDR_CFG: + hdr = kzalloc(sizeof(*hdr), GFP_KERNEL); + if (!hdr) { + ret = -ENOMEM; + return ret; + } + + ret = copy_from_user(hdr, up, sizeof(*hdr)); + if (!ret) + ret = sc2336_ioctl(sd, cmd, hdr); + else + ret = -EFAULT; + kfree(hdr); + break; + case PREISP_CMD_SET_HDRAE_EXP: + hdrae = kzalloc(sizeof(*hdrae), GFP_KERNEL); + if (!hdrae) { + ret = -ENOMEM; + return ret; + } + + ret = copy_from_user(hdrae, up, sizeof(*hdrae)); + if (!ret) + ret = sc2336_ioctl(sd, cmd, hdrae); + else + ret = -EFAULT; + kfree(hdrae); + break; + case RKMODULE_SET_QUICK_STREAM: + ret = copy_from_user(&stream, up, sizeof(u32)); + if (!ret) + ret = sc2336_ioctl(sd, cmd, &stream); + else + ret = -EFAULT; + break; + default: + ret = -ENOIOCTLCMD; + break; + } + + return ret; +} +#endif + +static int __sc2336_start_stream(struct sc2336 *sc2336) +{ + int ret; + + if (!sc2336->is_thunderboot) { + ret = sc2336_write_array(sc2336->client, sc2336->cur_mode->reg_list); + if (ret) + return ret; + /* In case these controls are set before streaming */ + ret = __v4l2_ctrl_handler_setup(&sc2336->ctrl_handler); + if (ret) + return ret; + if (sc2336->has_init_exp && sc2336->cur_mode->hdr_mode != NO_HDR) { + ret = sc2336_ioctl(&sc2336->subdev, PREISP_CMD_SET_HDRAE_EXP, + &sc2336->init_hdrae_exp); + if (ret) { + dev_err(&sc2336->client->dev, + "init exp fail in hdr mode\n"); + return ret; + } + } + } + ret = sc2336_write_reg(sc2336->client, SC2336_REG_CTRL_MODE, + SC2336_REG_VALUE_08BIT, SC2336_MODE_STREAMING); + return ret; +} + +static int __sc2336_stop_stream(struct sc2336 *sc2336) +{ + sc2336->has_init_exp = false; + if (sc2336->is_thunderboot) { + sc2336->is_first_streamoff = true; + pm_runtime_put(&sc2336->client->dev); + } + return sc2336_write_reg(sc2336->client, SC2336_REG_CTRL_MODE, + SC2336_REG_VALUE_08BIT, SC2336_MODE_SW_STANDBY); +} + +static int __sc2336_power_on(struct sc2336 *sc2336); +static int sc2336_s_stream(struct v4l2_subdev *sd, int on) +{ + struct sc2336 *sc2336 = to_sc2336(sd); + struct i2c_client *client = sc2336->client; + int ret = 0; + + mutex_lock(&sc2336->mutex); + on = !!on; + if (on == sc2336->streaming) + goto unlock_and_return; + if (on) { + if (sc2336->is_thunderboot && rkisp_tb_get_state() == RKISP_TB_NG) { + sc2336->is_thunderboot = false; + __sc2336_power_on(sc2336); + } + ret = pm_runtime_get_sync(&client->dev); + if (ret < 0) { + pm_runtime_put_noidle(&client->dev); + goto unlock_and_return; + } + ret = __sc2336_start_stream(sc2336); + if (ret) { + v4l2_err(sd, "start stream failed while write regs\n"); + pm_runtime_put(&client->dev); + goto unlock_and_return; + } + } else { + __sc2336_stop_stream(sc2336); + pm_runtime_put(&client->dev); + } + + sc2336->streaming = on; +unlock_and_return: + mutex_unlock(&sc2336->mutex); + return ret; +} + +static int sc2336_s_power(struct v4l2_subdev *sd, int on) +{ + struct sc2336 *sc2336 = to_sc2336(sd); + struct i2c_client *client = sc2336->client; + int ret = 0; + + mutex_lock(&sc2336->mutex); + + /* If the power state is not modified - no work to do. */ + if (sc2336->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; + } + + if (!sc2336->is_thunderboot) { + ret = sc2336_write_array(sc2336->client, sc2336_global_regs); + if (ret) { + v4l2_err(sd, "could not set init registers\n"); + pm_runtime_put_noidle(&client->dev); + goto unlock_and_return; + } + } + + sc2336->power_on = true; + } else { + pm_runtime_put(&client->dev); + sc2336->power_on = false; + } + +unlock_and_return: + mutex_unlock(&sc2336->mutex); + + return ret; +} + +/* Calculate the delay in us by clock rate and clock cycles */ +static inline u32 sc2336_cal_delay(u32 cycles, struct sc2336 *sc2336) +{ + return DIV_ROUND_UP(cycles, sc2336->cur_mode->xvclk_freq / 1000 / 1000); +} + +static int __sc2336_power_on(struct sc2336 *sc2336) +{ + int ret; + u32 delay_us; + struct device *dev = &sc2336->client->dev; + + if (!IS_ERR_OR_NULL(sc2336->pins_default)) { + ret = pinctrl_select_state(sc2336->pinctrl, + sc2336->pins_default); + if (ret < 0) + dev_err(dev, "could not set pins\n"); + } + ret = clk_set_rate(sc2336->xvclk, sc2336->cur_mode->xvclk_freq); + if (ret < 0) + dev_warn(dev, "Failed to set xvclk rate (%dHz)\n", sc2336->cur_mode->xvclk_freq); + if (clk_get_rate(sc2336->xvclk) != sc2336->cur_mode->xvclk_freq) + dev_warn(dev, "xvclk mismatched, modes are based on %dHz\n", + sc2336->cur_mode->xvclk_freq); + ret = clk_prepare_enable(sc2336->xvclk); + if (ret < 0) { + dev_err(dev, "Failed to enable xvclk\n"); + return ret; + } + + if (sc2336->is_thunderboot) + return 0; + + if (!IS_ERR(sc2336->reset_gpio)) + gpiod_set_value_cansleep(sc2336->reset_gpio, 0); + + ret = regulator_bulk_enable(SC2336_NUM_SUPPLIES, sc2336->supplies); + if (ret < 0) { + dev_err(dev, "Failed to enable regulators\n"); + goto disable_clk; + } + + if (!IS_ERR(sc2336->reset_gpio)) + gpiod_set_value_cansleep(sc2336->reset_gpio, 1); + + usleep_range(500, 1000); + + if (!IS_ERR(sc2336->reset_gpio)) + usleep_range(6000, 8000); + else + usleep_range(12000, 16000); + + /* 8192 cycles prior to first SCCB transaction */ + delay_us = sc2336_cal_delay(8192, sc2336); + usleep_range(delay_us, delay_us * 2); + + return 0; + +disable_clk: + clk_disable_unprepare(sc2336->xvclk); + + return ret; +} + +static void __sc2336_power_off(struct sc2336 *sc2336) +{ + int ret; + struct device *dev = &sc2336->client->dev; + + clk_disable_unprepare(sc2336->xvclk); + if (sc2336->is_thunderboot) { + if (sc2336->is_first_streamoff) { + sc2336->is_thunderboot = false; + sc2336->is_first_streamoff = false; + } else { + return; + } + } + + if (!IS_ERR(sc2336->reset_gpio)) + gpiod_set_value_cansleep(sc2336->reset_gpio, 0); + if (!IS_ERR_OR_NULL(sc2336->pins_sleep)) { + ret = pinctrl_select_state(sc2336->pinctrl, + sc2336->pins_sleep); + if (ret < 0) + dev_dbg(dev, "could not set pins\n"); + } + regulator_bulk_disable(SC2336_NUM_SUPPLIES, sc2336->supplies); +} + +static int sc2336_runtime_resume(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct sc2336 *sc2336 = to_sc2336(sd); + + return __sc2336_power_on(sc2336); +} + +static int sc2336_runtime_suspend(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct sc2336 *sc2336 = to_sc2336(sd); + + __sc2336_power_off(sc2336); + + return 0; +} + +#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API +static int sc2336_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) +{ + struct sc2336 *sc2336 = to_sc2336(sd); + struct v4l2_mbus_framefmt *try_fmt = + v4l2_subdev_get_try_format(sd, fh->pad, 0); + const struct sc2336_mode *def_mode = &supported_modes[0]; + + mutex_lock(&sc2336->mutex); + /* Initialize try_fmt */ + try_fmt->width = def_mode->width; + try_fmt->height = def_mode->height; + try_fmt->code = def_mode->bus_fmt; + try_fmt->field = V4L2_FIELD_NONE; + + mutex_unlock(&sc2336->mutex); + /* No crop or compose */ + + return 0; +} +#endif + +static int sc2336_enum_frame_interval(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_frame_interval_enum *fie) +{ + if (fie->index >= ARRAY_SIZE(supported_modes)) + return -EINVAL; + + fie->code = supported_modes[fie->index].bus_fmt; + fie->width = supported_modes[fie->index].width; + fie->height = supported_modes[fie->index].height; + fie->interval = supported_modes[fie->index].max_fps; + fie->reserved[0] = supported_modes[fie->index].hdr_mode; + return 0; +} + +static const struct dev_pm_ops sc2336_pm_ops = { + SET_RUNTIME_PM_OPS(sc2336_runtime_suspend, + sc2336_runtime_resume, NULL) +}; + +#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API +static const struct v4l2_subdev_internal_ops sc2336_internal_ops = { + .open = sc2336_open, +}; +#endif + +static const struct v4l2_subdev_core_ops sc2336_core_ops = { + .s_power = sc2336_s_power, + .ioctl = sc2336_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl32 = sc2336_compat_ioctl32, +#endif +}; + +static const struct v4l2_subdev_video_ops sc2336_video_ops = { + .s_stream = sc2336_s_stream, + .g_frame_interval = sc2336_g_frame_interval, +}; + +static const struct v4l2_subdev_pad_ops sc2336_pad_ops = { + .enum_mbus_code = sc2336_enum_mbus_code, + .enum_frame_size = sc2336_enum_frame_sizes, + .enum_frame_interval = sc2336_enum_frame_interval, + .get_fmt = sc2336_get_fmt, + .set_fmt = sc2336_set_fmt, + .get_mbus_config = sc2336_g_mbus_config, +}; + +static const struct v4l2_subdev_ops sc2336_subdev_ops = { + .core = &sc2336_core_ops, + .video = &sc2336_video_ops, + .pad = &sc2336_pad_ops, +}; + +static int sc2336_set_ctrl(struct v4l2_ctrl *ctrl) +{ + struct sc2336 *sc2336 = container_of(ctrl->handler, + struct sc2336, ctrl_handler); + struct i2c_client *client = sc2336->client; + s64 max; + int ret = 0; + u32 val = 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 = sc2336->cur_mode->height + ctrl->val - 8; + __v4l2_ctrl_modify_range(sc2336->exposure, + sc2336->exposure->minimum, max, + sc2336->exposure->step, + sc2336->exposure->default_value); + break; + } + + if (!pm_runtime_get_if_in_use(&client->dev)) + return 0; + + switch (ctrl->id) { + case V4L2_CID_EXPOSURE: + dev_dbg(&client->dev, "set exposure 0x%x\n", ctrl->val); + if (sc2336->cur_mode->hdr_mode == NO_HDR) { + val = ctrl->val; + /* 4 least significant bits of expsoure are fractional part */ + ret = sc2336_write_reg(sc2336->client, + SC2336_REG_EXPOSURE_H, + SC2336_REG_VALUE_08BIT, + SC2336_FETCH_EXP_H(val)); + ret |= sc2336_write_reg(sc2336->client, + SC2336_REG_EXPOSURE_M, + SC2336_REG_VALUE_08BIT, + SC2336_FETCH_EXP_M(val)); + ret |= sc2336_write_reg(sc2336->client, + SC2336_REG_EXPOSURE_L, + SC2336_REG_VALUE_08BIT, + SC2336_FETCH_EXP_L(val)); + } + break; + case V4L2_CID_ANALOGUE_GAIN: + dev_dbg(&client->dev, "set gain 0x%x\n", ctrl->val); + if (sc2336->cur_mode->hdr_mode == NO_HDR) + ret = sc2336_set_gain_reg(sc2336, ctrl->val); + break; + case V4L2_CID_VBLANK: + dev_dbg(&client->dev, "set vblank 0x%x\n", ctrl->val); + ret = sc2336_write_reg(sc2336->client, + SC2336_REG_VTS_H, + SC2336_REG_VALUE_08BIT, + (ctrl->val + sc2336->cur_mode->height) + >> 8); + ret |= sc2336_write_reg(sc2336->client, + SC2336_REG_VTS_L, + SC2336_REG_VALUE_08BIT, + (ctrl->val + sc2336->cur_mode->height) + & 0xff); + sc2336->cur_vts = ctrl->val + sc2336->cur_mode->height; + break; + case V4L2_CID_TEST_PATTERN: + ret = sc2336_enable_test_pattern(sc2336, ctrl->val); + break; + case V4L2_CID_HFLIP: + ret = sc2336_read_reg(sc2336->client, SC2336_FLIP_MIRROR_REG, + SC2336_REG_VALUE_08BIT, &val); + ret |= sc2336_write_reg(sc2336->client, SC2336_FLIP_MIRROR_REG, + SC2336_REG_VALUE_08BIT, + SC2336_FETCH_MIRROR(val, ctrl->val)); + break; + case V4L2_CID_VFLIP: + ret = sc2336_read_reg(sc2336->client, SC2336_FLIP_MIRROR_REG, + SC2336_REG_VALUE_08BIT, &val); + ret |= sc2336_write_reg(sc2336->client, SC2336_FLIP_MIRROR_REG, + SC2336_REG_VALUE_08BIT, + SC2336_FETCH_FLIP(val, 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 sc2336_ctrl_ops = { + .s_ctrl = sc2336_set_ctrl, +}; + +static int sc2336_initialize_controls(struct sc2336 *sc2336) +{ + const struct sc2336_mode *mode; + struct v4l2_ctrl_handler *handler; + s64 exposure_max, vblank_def; + u32 h_blank; + int ret; + u64 dst_link_freq = 0; + u64 dst_pixel_rate = 0; + + handler = &sc2336->ctrl_handler; + mode = sc2336->cur_mode; + ret = v4l2_ctrl_handler_init(handler, 9); + if (ret) + return ret; + handler->lock = &sc2336->mutex; + + sc2336->link_freq = v4l2_ctrl_new_int_menu(handler, NULL, + V4L2_CID_LINK_FREQ, + ARRAY_SIZE(link_freq_menu_items) - 1, 0, link_freq_menu_items); + if (sc2336->link_freq) + sc2336->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY; + + dst_link_freq = mode->link_freq_idx; + dst_pixel_rate = (u32)link_freq_menu_items[mode->link_freq_idx] / + SC2336_BITS_PER_SAMPLE * 2 * SC2336_LANES; + sc2336->pixel_rate = v4l2_ctrl_new_std(handler, NULL, V4L2_CID_PIXEL_RATE, + 0, PIXEL_RATE_WITH_405M_10BIT, 1, dst_pixel_rate); + + __v4l2_ctrl_s_ctrl(sc2336->link_freq, dst_link_freq); + + h_blank = mode->hts_def - mode->width; + sc2336->hblank = v4l2_ctrl_new_std(handler, NULL, V4L2_CID_HBLANK, + h_blank, h_blank, 1, h_blank); + if (sc2336->hblank) + sc2336->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; + vblank_def = mode->vts_def - mode->height; + sc2336->vblank = v4l2_ctrl_new_std(handler, &sc2336_ctrl_ops, + V4L2_CID_VBLANK, vblank_def, + SC2336_VTS_MAX - mode->height, + 1, vblank_def); + exposure_max = mode->vts_def - 8; + sc2336->exposure = v4l2_ctrl_new_std(handler, &sc2336_ctrl_ops, + V4L2_CID_EXPOSURE, SC2336_EXPOSURE_MIN, + exposure_max, SC2336_EXPOSURE_STEP, + mode->exp_def); + sc2336->anal_gain = v4l2_ctrl_new_std(handler, &sc2336_ctrl_ops, + V4L2_CID_ANALOGUE_GAIN, SC2336_GAIN_MIN, + SC2336_GAIN_MAX, SC2336_GAIN_STEP, + SC2336_GAIN_DEFAULT); + sc2336->test_pattern = v4l2_ctrl_new_std_menu_items(handler, + &sc2336_ctrl_ops, + V4L2_CID_TEST_PATTERN, + ARRAY_SIZE(sc2336_test_pattern_menu) - 1, + 0, 0, sc2336_test_pattern_menu); + v4l2_ctrl_new_std(handler, &sc2336_ctrl_ops, + V4L2_CID_HFLIP, 0, 1, 1, 0); + v4l2_ctrl_new_std(handler, &sc2336_ctrl_ops, + V4L2_CID_VFLIP, 0, 1, 1, 0); + if (handler->error) { + ret = handler->error; + dev_err(&sc2336->client->dev, + "Failed to init controls(%d)\n", ret); + goto err_free_handler; + } + + sc2336->subdev.ctrl_handler = handler; + sc2336->has_init_exp = false; + + return 0; + +err_free_handler: + v4l2_ctrl_handler_free(handler); + + return ret; +} + +static int sc2336_check_sensor_id(struct sc2336 *sc2336, + struct i2c_client *client) +{ + struct device *dev = &sc2336->client->dev; + u32 id = 0; + int ret; + + if (sc2336->is_thunderboot) { + dev_info(dev, "Enable thunderboot mode, skip sensor id check\n"); + return 0; + } + + ret = sc2336_read_reg(client, SC2336_REG_CHIP_ID, + SC2336_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 sc2336_configure_regulators(struct sc2336 *sc2336) +{ + unsigned int i; + + for (i = 0; i < SC2336_NUM_SUPPLIES; i++) + sc2336->supplies[i].supply = sc2336_supply_names[i]; + + return devm_regulator_bulk_get(&sc2336->client->dev, + SC2336_NUM_SUPPLIES, + sc2336->supplies); +} + +static int sc2336_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct device *dev = &client->dev; + struct device_node *node = dev->of_node; + struct sc2336 *sc2336; + struct v4l2_subdev *sd; + char facing[2]; + int ret; + int i, hdr_mode = 0; + + dev_info(dev, "driver version: %02x.%02x.%02x", + DRIVER_VERSION >> 16, + (DRIVER_VERSION & 0xff00) >> 8, + DRIVER_VERSION & 0x00ff); + + sc2336 = devm_kzalloc(dev, sizeof(*sc2336), GFP_KERNEL); + if (!sc2336) + return -ENOMEM; + + ret = of_property_read_u32(node, RKMODULE_CAMERA_MODULE_INDEX, + &sc2336->module_index); + ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_FACING, + &sc2336->module_facing); + ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_NAME, + &sc2336->module_name); + ret |= of_property_read_string(node, RKMODULE_CAMERA_LENS_NAME, + &sc2336->len_name); + if (ret) { + dev_err(dev, "could not get module information!\n"); + return -EINVAL; + } + + sc2336->is_thunderboot = IS_ENABLED(CONFIG_VIDEO_ROCKCHIP_THUNDER_BOOT_ISP); + + sc2336->client = client; + for (i = 0; i < ARRAY_SIZE(supported_modes); i++) { + if (hdr_mode == supported_modes[i].hdr_mode) { + sc2336->cur_mode = &supported_modes[i]; + break; + } + } + if (i == ARRAY_SIZE(supported_modes)) + sc2336->cur_mode = &supported_modes[0]; + + sc2336->xvclk = devm_clk_get(dev, "xvclk"); + if (IS_ERR(sc2336->xvclk)) { + dev_err(dev, "Failed to get xvclk\n"); + return -EINVAL; + } + + if (sc2336->is_thunderboot) { + sc2336->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_ASIS); + if (IS_ERR(sc2336->reset_gpio)) + dev_warn(dev, "Failed to get reset-gpios\n"); + } else { + sc2336->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); + if (IS_ERR(sc2336->reset_gpio)) + dev_warn(dev, "Failed to get reset-gpios\n"); + } + + sc2336->pinctrl = devm_pinctrl_get(dev); + if (!IS_ERR(sc2336->pinctrl)) { + sc2336->pins_default = + pinctrl_lookup_state(sc2336->pinctrl, + OF_CAMERA_PINCTRL_STATE_DEFAULT); + if (IS_ERR(sc2336->pins_default)) + dev_err(dev, "could not get default pinstate\n"); + + sc2336->pins_sleep = + pinctrl_lookup_state(sc2336->pinctrl, + OF_CAMERA_PINCTRL_STATE_SLEEP); + if (IS_ERR(sc2336->pins_sleep)) + dev_err(dev, "could not get sleep pinstate\n"); + } else { + dev_err(dev, "no pinctrl\n"); + } + + ret = sc2336_configure_regulators(sc2336); + if (ret) { + dev_err(dev, "Failed to get power regulators\n"); + return ret; + } + + mutex_init(&sc2336->mutex); + + sd = &sc2336->subdev; + v4l2_i2c_subdev_init(sd, client, &sc2336_subdev_ops); + ret = sc2336_initialize_controls(sc2336); + if (ret) + goto err_destroy_mutex; + + ret = __sc2336_power_on(sc2336); + if (ret) + goto err_free_handler; + + ret = sc2336_check_sensor_id(sc2336, client); + if (ret) + goto err_power_off; + +#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API + sd->internal_ops = &sc2336_internal_ops; + sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | + V4L2_SUBDEV_FL_HAS_EVENTS; +#endif +#if defined(CONFIG_MEDIA_CONTROLLER) + sc2336->pad.flags = MEDIA_PAD_FL_SOURCE; + sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; + ret = media_entity_pads_init(&sd->entity, 1, &sc2336->pad); + if (ret < 0) + goto err_power_off; +#endif + + memset(facing, 0, sizeof(facing)); + if (strcmp(sc2336->module_facing, "back") == 0) + facing[0] = 'b'; + else + facing[0] = 'f'; + + snprintf(sd->name, sizeof(sd->name), "m%02d_%s_%s %s", + sc2336->module_index, facing, + SC2336_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); + if (sc2336->is_thunderboot) + pm_runtime_get_sync(dev); + else + pm_runtime_idle(dev); + + return 0; + +err_clean_entity: +#if defined(CONFIG_MEDIA_CONTROLLER) + media_entity_cleanup(&sd->entity); +#endif +err_power_off: + __sc2336_power_off(sc2336); +err_free_handler: + v4l2_ctrl_handler_free(&sc2336->ctrl_handler); +err_destroy_mutex: + mutex_destroy(&sc2336->mutex); + + return ret; +} + +static int sc2336_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct sc2336 *sc2336 = to_sc2336(sd); + + v4l2_async_unregister_subdev(sd); +#if defined(CONFIG_MEDIA_CONTROLLER) + media_entity_cleanup(&sd->entity); +#endif + v4l2_ctrl_handler_free(&sc2336->ctrl_handler); + mutex_destroy(&sc2336->mutex); + + pm_runtime_disable(&client->dev); + if (!pm_runtime_status_suspended(&client->dev)) + __sc2336_power_off(sc2336); + pm_runtime_set_suspended(&client->dev); + + return 0; +} + +#if IS_ENABLED(CONFIG_OF) +static const struct of_device_id sc2336_of_match[] = { + { .compatible = "smartsens,sc2336" }, + {}, +}; +MODULE_DEVICE_TABLE(of, sc2336_of_match); +#endif + +static const struct i2c_device_id sc2336_match_id[] = { + { "smartsens,sc2336", 0 }, + { }, +}; + +static struct i2c_driver sc2336_i2c_driver = { + .driver = { + .name = SC2336_NAME, + .pm = &sc2336_pm_ops, + .of_match_table = of_match_ptr(sc2336_of_match), + }, + .probe = &sc2336_probe, + .remove = &sc2336_remove, + .id_table = sc2336_match_id, +}; + +static int __init sensor_mod_init(void) +{ + return i2c_add_driver(&sc2336_i2c_driver); +} + +static void __exit sensor_mod_exit(void) +{ + i2c_del_driver(&sc2336_i2c_driver); +} + +#if defined(CONFIG_VIDEO_ROCKCHIP_THUNDER_BOOT_ISP) && !defined(CONFIG_INITCALL_ASYNC) +subsys_initcall(sensor_mod_init); +#else +device_initcall_sync(sensor_mod_init); +#endif +module_exit(sensor_mod_exit); + +MODULE_DESCRIPTION("smartsens sc2336 sensor driver"); +MODULE_LICENSE("GPL");