--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (c) 2022 Intel Corporation.
+
+#include <asm/unaligned.h>
+#include <linux/acpi.h>
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/pm_runtime.h>
+#include <linux/version.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-fwnode.h>
+#include <linux/vsc.h>
+
+#define OV02C10_LINK_FREQ_400MHZ 400000000ULL
+#define OV02C10_SCLK 80000000LL
+#define OV02C10_MCLK 19200000
+#define OV02C10_DATA_LANES 1
+#define OV02C10_RGB_DEPTH 10
+
+#define OV02C10_REG_CHIP_ID 0x300a
+#define OV02C10_CHIP_ID 0x560243
+
+#define OV02C10_REG_MODE_SELECT 0x0100
+#define OV02C10_MODE_STANDBY 0x00
+#define OV02C10_MODE_STREAMING 0x01
+
+/* vertical-timings from sensor */
+#define OV02C10_REG_VTS 0x380e
+#define OV02C10_VTS_DEF 0x048c
+#define OV02C10_VTS_MIN 0x048c
+#define OV02C10_VTS_MAX 0x7fff
+
+/* Exposure controls from sensor */
+#define OV02C10_REG_EXPOSURE 0x3501
+#define OV02C10_EXPOSURE_MIN 4
+#define OV02C10_EXPOSURE_MAX_MARGIN 8
+#define OV02C10_EXPOSURE_STEP 1
+
+/* Analog gain controls from sensor */
+#define OV02C10_REG_ANALOG_GAIN 0x3508
+#define OV02C10_ANAL_GAIN_MIN 0x10
+#define OV02C10_ANAL_GAIN_MAX 0xf8
+#define OV02C10_ANAL_GAIN_STEP 1
+#define OV02C10_ANAL_GAIN_DEFAULT 0x80
+
+/* Digital gain controls from sensor */
+#define OV02C10_REG_DIGILAL_GAIN 0x350a
+#define OV02C10_DGTL_GAIN_MIN 0x0400
+#define OV02C10_DGTL_GAIN_MAX 0x3fff
+#define OV02C10_DGTL_GAIN_STEP 1
+#define OV02C10_DGTL_GAIN_DEFAULT 0x0400
+
+/* Test Pattern Control */
+#define OV02C10_REG_TEST_PATTERN 0x4503
+#define OV02C10_TEST_PATTERN_ENABLE BIT(7)
+#define OV02C10_TEST_PATTERN_BAR_SHIFT 0
+
+enum {
+ OV02C10_LINK_FREQ_400MHZ_INDEX,
+};
+
+struct ov02c10_reg {
+ u16 address;
+ u8 val;
+};
+
+struct ov02c10_reg_list {
+ u32 num_of_regs;
+ const struct ov02c10_reg *regs;
+};
+
+struct ov02c10_link_freq_config {
+ const struct ov02c10_reg_list reg_list;
+};
+
+struct ov02c10_mode {
+ /* Frame width in pixels */
+ u32 width;
+
+ /* Frame height in pixels */
+ u32 height;
+
+ /* Horizontal timining size */
+ u32 hts;
+
+ /* Default vertical timining size */
+ u32 vts_def;
+
+ /* Min vertical timining size */
+ u32 vts_min;
+
+ /* Link frequency needed for this resolution */
+ u32 link_freq_index;
+
+ /* Sensor register settings for this resolution */
+ const struct ov02c10_reg_list reg_list;
+};
+
+static const struct ov02c10_reg mipi_data_rate_960mbps[] = {
+};
+
+static const struct ov02c10_reg sensor_1932x1092_1lane_30fps_setting[] = {
+ // 1932x1092_GRBG_MIPI_MCLK19.2MHz_30fps_1Lane
+ {0x0301, 0x08},
+ // {0x0303, 0x06},
+ {0x0304, 0x01},
+ // {0x0305, 0xe0},
+ {0x0313, 0x40},
+ {0x031c, 0x4f},
+ {0x301b, 0xd2},
+ {0x3020, 0x97},
+ {0x3022, 0x01},
+ {0x3026, 0xb4},
+ {0x3027, 0xe1},
+ {0x303b, 0x00},
+ {0x303c, 0x4f},
+ {0x303d, 0xe6},
+ {0x303e, 0x00},
+ {0x303f, 0x03},
+ {0x3021, 0x23},
+ {0x3501, 0x04},
+ {0x3502, 0x6c},
+ {0x3504, 0x0c},
+ {0x3507, 0x00},
+ {0x3508, 0x08},
+ {0x3509, 0x00},
+ {0x350a, 0x01},
+ {0x350b, 0x00},
+ {0x350c, 0x41},
+ {0x3600, 0x84},
+ {0x3611, 0x1b},
+ {0x3613, 0x78},
+ {0x3623, 0x00},
+ {0x3632, 0xa0},
+ {0x3642, 0xe8},
+ {0x364c, 0x70},
+ {0x365f, 0x0f},
+ {0x3708, 0x30},
+ {0x3714, 0x24},
+ {0x3725, 0x02},
+ {0x3737, 0x08},
+ {0x3739, 0x28},
+ {0x3749, 0x32},
+ {0x374a, 0x32},
+ {0x374b, 0x32},
+ {0x374c, 0x32},
+ {0x374d, 0x81},
+ {0x374e, 0x81},
+ {0x374f, 0x81},
+ {0x3752, 0x36},
+ {0x3753, 0x36},
+ {0x3754, 0x36},
+ {0x3761, 0x00},
+ {0x376c, 0x81},
+ {0x377c, 0x81},
+ {0x377d, 0x81},
+ {0x377e, 0x81},
+ {0x37a0, 0x44},
+ {0x37a6, 0x44},
+ {0x37aa, 0x0d},
+ {0x37ae, 0x00},
+ {0x37cb, 0x03},
+ {0x37cc, 0x01},
+ {0x37d8, 0x02},
+ {0x37d9, 0x10},
+ {0x37e1, 0x10},
+ {0x37e2, 0x18},
+ {0x37e3, 0x08},
+ {0x37e4, 0x08},
+ {0x37e5, 0x02},
+ {0x37e6, 0x08},
+ {0x3800, 0x00},
+ {0x3801, 0x00},
+ {0x3802, 0x00},
+ // {0x3803, 0x04},
+ // {0x3804, 0x07},
+ // {0x3805, 0x8f},
+ // {0x3806, 0x04},
+ // {0x3807, 0x43},
+ // {0x3808, 0x07},
+ // {0x3809, 0x80},
+ // {0x380a, 0x04},
+ // {0x380b, 0x38},
+ // {0x380c, 0x04},
+ // {0x380d, 0x74},
+ // {0x380e, 0x04},
+ // {0x380f, 0x8c},
+ // {0x3810, 0x00},
+ // {0x3811, 0x07},
+ // {0x3812, 0x00},
+ // {0x3813, 0x04},
+ {0x3814, 0x01},
+ {0x3815, 0x01},
+ {0x3816, 0x01},
+ {0x3817, 0x01},
+ {0x3820, 0xa8},
+ {0x3821, 0x00},
+ {0x3822, 0x80},
+ {0x3823, 0x08},
+ {0x3824, 0x00},
+ {0x3825, 0x20},
+ {0x3826, 0x00},
+ {0x3827, 0x08},
+ {0x382a, 0x00},
+ {0x382b, 0x08},
+ {0x382d, 0x00},
+ {0x382e, 0x00},
+ {0x382f, 0x23},
+ {0x3834, 0x00},
+ {0x3839, 0x00},
+ {0x383a, 0xd1},
+ {0x383e, 0x03},
+ {0x393d, 0x29},
+ {0x393f, 0x6e},
+ {0x394b, 0x01},
+ {0x394c, 0x01},
+ {0x394d, 0x01},
+ {0x394e, 0x01},
+ {0x394f, 0x01},
+ {0x3950, 0x01},
+ {0x3951, 0x01},
+ {0x3952, 0x01},
+ {0x3953, 0x01},
+ {0x3954, 0x01},
+ {0x3955, 0x01},
+ {0x3956, 0x01},
+ {0x3957, 0x0e},
+ {0x3958, 0x08},
+ {0x3959, 0x08},
+ {0x395a, 0x08},
+ {0x395b, 0x00},
+ {0x395c, 0x00},
+ {0x395d, 0x00},
+ {0x395e, 0x00},
+ {0x395f, 0x00},
+ {0x395f, 0x00},
+ {0x3960, 0x00},
+ {0x3961, 0x00},
+ {0x3962, 0x00},
+ {0x3963, 0x00},
+ {0x3964, 0x00},
+ {0x3965, 0x00},
+ {0x3966, 0x00},
+ {0x3967, 0x00},
+ {0x3968, 0x01},
+ {0x3969, 0x01},
+ {0x396a, 0x01},
+ {0x396b, 0x01},
+ {0x396c, 0x00},
+ {0x396d, 0xf0},
+ {0x396e, 0x11},
+ {0x396f, 0x00},
+ {0x3970, 0x37},
+ {0x3971, 0x37},
+ {0x3972, 0x37},
+ {0x3973, 0x37},
+ {0x3974, 0x00},
+ {0x3975, 0x3c},
+ {0x3976, 0x3c},
+ {0x3977, 0x3c},
+ {0x3978, 0x3c},
+ {0x3c00, 0x0f},
+ {0x3c20, 0x01},
+ {0x3c21, 0x08},
+ {0x3f00, 0x8b},
+ {0x3f02, 0x0f},
+ {0x4000, 0xc3},
+ {0x4001, 0xe0},
+ {0x4002, 0x00},
+ {0x4003, 0x40},
+ {0x4008, 0x04},
+ {0x4009, 0x23},
+ {0x400a, 0x04},
+ {0x400b, 0x01},
+ {0x4077, 0x06},
+ {0x4078, 0x00},
+ {0x4079, 0x1a},
+ {0x407a, 0x7f},
+ {0x407b, 0x01},
+ {0x4080, 0x03},
+ {0x4081, 0x84},
+ {0x4308, 0x03},
+ {0x4309, 0xff},
+ {0x430d, 0x00},
+ {0x4806, 0x00},
+ {0x4813, 0x00},
+ {0x4837, 0x10},
+ {0x4857, 0x05},
+ {0x4500, 0x07},
+ {0x4501, 0x00},
+ {0x4503, 0x00},
+ {0x450a, 0x04},
+ {0x450e, 0x00},
+ {0x450f, 0x00},
+ {0x4800, 0x24},
+ {0x4900, 0x00},
+ {0x4901, 0x00},
+ {0x4902, 0x01},
+ {0x5000, 0xf5},
+ {0x5001, 0x50},
+ {0x5006, 0x00},
+ {0x5080, 0x40},
+ {0x5181, 0x2b},
+ {0x5202, 0xa3},
+ {0x5206, 0x01},
+ {0x5207, 0x00},
+ {0x520a, 0x01},
+ {0x520b, 0x00},
+ // {0x3016, 0x32},
+ {0x365d, 0x00},
+ {0x4815, 0x40},
+ {0x4816, 0x12},
+ {0x4f00, 0x01},
+ {0x396c, 0x10},
+ {0x3603, 0x08},
+ {0x395b, 0x13},
+ {0x395c, 0x09},
+ {0x395d, 0x05},
+ {0x395e, 0x02},
+ {0x3610, 0x57},
+ {0x394e, 0x0b},
+ {0x394d, 0x08},
+ {0x394c, 0x06},
+ {0x394b, 0x06},
+ // key setting for MCLK=19.2MCLK 1932x1092 GRBG 1 lane 30fps
+ {0x0303, 0x05},
+ {0x0305, 0x90},
+ {0x0316, 0x90},
+ {0x3016, 0x12},
+ {0x3803, 0x00},
+ {0x3804, 0x07},
+ {0x3805, 0x8f},
+ {0x3806, 0x04},
+ {0x3807, 0x47},
+ {0x3808, 0x07},
+ {0x3809, 0x8c},
+ {0x380a, 0x04},
+ {0x380b, 0x44},
+ {0x380c, 0x08},
+ {0x380d, 0xe8},
+ {0x380e, 0x04},
+ {0x380f, 0x8c},
+ {0x3810, 0x00},
+ {0x3811, 0x03},
+ {0x3812, 0x00},
+ {0x3813, 0x03},
+};
+
+static const char * const ov02c10_test_pattern_menu[] = {
+ "Disabled",
+ "Color Bar",
+ "Top-Bottom Darker Color Bar",
+ "Right-Left Darker Color Bar",
+ "Color Bar type 4",
+};
+
+static const s64 link_freq_menu_items[] = {
+ OV02C10_LINK_FREQ_400MHZ,
+};
+
+static const struct ov02c10_link_freq_config link_freq_configs[] = {
+ [OV02C10_LINK_FREQ_400MHZ_INDEX] = {
+ .reg_list = {
+ .num_of_regs = ARRAY_SIZE(mipi_data_rate_960mbps),
+ .regs = mipi_data_rate_960mbps,
+ }
+ },
+};
+
+static const struct ov02c10_mode supported_modes[] = {
+ {
+ .width = 1932,
+ .height = 1092,
+ .hts = 2280,
+ .vts_def = OV02C10_VTS_DEF,
+ .vts_min = OV02C10_VTS_MIN,
+ .reg_list = {
+ .num_of_regs = ARRAY_SIZE(sensor_1932x1092_1lane_30fps_setting),
+ .regs = sensor_1932x1092_1lane_30fps_setting,
+ },
+ .link_freq_index = OV02C10_LINK_FREQ_400MHZ_INDEX,
+ },
+};
+
+struct ov02c10 {
+ struct v4l2_subdev sd;
+ struct media_pad pad;
+ struct v4l2_ctrl_handler ctrl_handler;
+
+ /* V4L2 Controls */
+ struct v4l2_ctrl *link_freq;
+ struct v4l2_ctrl *pixel_rate;
+ struct v4l2_ctrl *vblank;
+ struct v4l2_ctrl *hblank;
+ struct v4l2_ctrl *exposure;
+ struct v4l2_ctrl *privacy_status;
+ /* Current mode */
+ const struct ov02c10_mode *cur_mode;
+
+ /* To serialize asynchronus callbacks */
+ struct mutex mutex;
+
+ /* Streaming on/off */
+ bool streaming;
+};
+
+static inline struct ov02c10 *to_ov02c10(struct v4l2_subdev *subdev)
+{
+ return container_of(subdev, struct ov02c10, sd);
+}
+
+static int ov02c10_read_reg(struct ov02c10 *ov02c10, u16 reg, u16 len, u32 *val)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&ov02c10->sd);
+ struct i2c_msg msgs[2];
+ u8 addr_buf[2];
+ u8 data_buf[4] = {0};
+ int ret = 0;
+
+ if (len > sizeof(data_buf))
+ return -EINVAL;
+
+ put_unaligned_be16(reg, addr_buf);
+ msgs[0].addr = client->addr;
+ msgs[0].flags = 0;
+ msgs[0].len = sizeof(addr_buf);
+ msgs[0].buf = addr_buf;
+ msgs[1].addr = client->addr;
+ msgs[1].flags = I2C_M_RD;
+ msgs[1].len = len;
+ msgs[1].buf = &data_buf[sizeof(data_buf) - len];
+
+ ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
+
+ if (ret != ARRAY_SIZE(msgs))
+ return ret < 0 ? ret : -EIO;
+
+ *val = get_unaligned_be32(data_buf);
+
+ return 0;
+}
+
+static int ov02c10_write_reg(struct ov02c10 *ov02c10, u16 reg, u16 len, u32 val)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&ov02c10->sd);
+ u8 buf[6];
+ int ret = 0;
+
+ if (len > 4)
+ return -EINVAL;
+
+ put_unaligned_be16(reg, buf);
+ put_unaligned_be32(val << 8 * (4 - len), buf + 2);
+
+ ret = i2c_master_send(client, buf, len + 2);
+ if (ret != len + 2)
+ return ret < 0 ? ret : -EIO;
+
+ return 0;
+}
+
+static int ov02c10_write_reg_list(struct ov02c10 *ov02c10,
+ const struct ov02c10_reg_list *r_list)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&ov02c10->sd);
+ unsigned int i;
+ int ret = 0;
+
+ for (i = 0; i < r_list->num_of_regs; i++) {
+ ret = ov02c10_write_reg(ov02c10, r_list->regs[i].address, 1,
+ r_list->regs[i].val);
+ if (ret) {
+ dev_err_ratelimited(&client->dev,
+ "write reg 0x%4.4x return err = %d",
+ r_list->regs[i].address, ret);
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static int ov02c10_test_pattern(struct ov02c10 *ov02c10, u32 pattern)
+{
+ if (pattern)
+ pattern = (pattern - 1) << OV02C10_TEST_PATTERN_BAR_SHIFT |
+ OV02C10_TEST_PATTERN_ENABLE;
+
+ return ov02c10_write_reg(ov02c10, OV02C10_REG_TEST_PATTERN, 1, pattern);
+}
+
+static int ov02c10_set_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct ov02c10 *ov02c10 = container_of(ctrl->handler,
+ struct ov02c10, ctrl_handler);
+ struct i2c_client *client = v4l2_get_subdevdata(&ov02c10->sd);
+ s64 exposure_max;
+ int ret = 0;
+
+ /* Propagate change of current control to all related controls */
+ if (ctrl->id == V4L2_CID_VBLANK) {
+ /* Update max exposure while meeting expected vblanking */
+ exposure_max = ov02c10->cur_mode->height + ctrl->val -
+ OV02C10_EXPOSURE_MAX_MARGIN;
+ __v4l2_ctrl_modify_range(ov02c10->exposure,
+ ov02c10->exposure->minimum,
+ exposure_max, ov02c10->exposure->step,
+ exposure_max);
+ }
+
+ /* V4L2 controls values will be applied only when power is already up */
+ if (!pm_runtime_get_if_in_use(&client->dev))
+ return 0;
+
+ switch (ctrl->id) {
+ case V4L2_CID_ANALOGUE_GAIN:
+ ret = ov02c10_write_reg(ov02c10, OV02C10_REG_ANALOG_GAIN, 2,
+ ctrl->val << 4);
+ break;
+
+ case V4L2_CID_DIGITAL_GAIN:
+ ret = ov02c10_write_reg(ov02c10, OV02C10_REG_DIGILAL_GAIN, 3,
+ ctrl->val << 6);
+ break;
+
+ case V4L2_CID_EXPOSURE:
+ ret = ov02c10_write_reg(ov02c10, OV02C10_REG_EXPOSURE, 2,
+ ctrl->val);
+ break;
+
+ case V4L2_CID_VBLANK:
+ ret = ov02c10_write_reg(ov02c10, OV02C10_REG_VTS, 2,
+ ov02c10->cur_mode->height + ctrl->val);
+ break;
+
+ case V4L2_CID_TEST_PATTERN:
+ ret = ov02c10_test_pattern(ov02c10, ctrl->val);
+ break;
+
+ case V4L2_CID_PRIVACY:
+ dev_dbg(&client->dev, "set privacy to %d", ctrl->val);
+ break;
+
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ pm_runtime_put(&client->dev);
+
+ return ret;
+}
+
+static const struct v4l2_ctrl_ops ov02c10_ctrl_ops = {
+ .s_ctrl = ov02c10_set_ctrl,
+};
+
+static int ov02c10_init_controls(struct ov02c10 *ov02c10)
+{
+ struct v4l2_ctrl_handler *ctrl_hdlr;
+ const struct ov02c10_mode *cur_mode;
+ s64 exposure_max, h_blank;
+ u32 vblank_min, vblank_max, vblank_default;
+ int size;
+ int ret = 0;
+
+ ctrl_hdlr = &ov02c10->ctrl_handler;
+ ret = v4l2_ctrl_handler_init(ctrl_hdlr, 9);
+ if (ret)
+ return ret;
+
+ ctrl_hdlr->lock = &ov02c10->mutex;
+ cur_mode = ov02c10->cur_mode;
+ size = ARRAY_SIZE(link_freq_menu_items);
+
+ ov02c10->link_freq = v4l2_ctrl_new_int_menu(ctrl_hdlr,
+ &ov02c10_ctrl_ops,
+ V4L2_CID_LINK_FREQ,
+ size - 1, 0,
+ link_freq_menu_items);
+ if (ov02c10->link_freq)
+ ov02c10->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+
+ ov02c10->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &ov02c10_ctrl_ops,
+ V4L2_CID_PIXEL_RATE, 0,
+ OV02C10_SCLK, 1, OV02C10_SCLK);
+
+ vblank_min = cur_mode->vts_min - cur_mode->height;
+ vblank_max = OV02C10_VTS_MAX - cur_mode->height;
+ vblank_default = cur_mode->vts_def - cur_mode->height;
+ ov02c10->vblank = v4l2_ctrl_new_std(ctrl_hdlr, &ov02c10_ctrl_ops,
+ V4L2_CID_VBLANK, vblank_min,
+ vblank_max, 1, vblank_default);
+
+ h_blank = cur_mode->hts - cur_mode->width;
+ ov02c10->hblank = v4l2_ctrl_new_std(ctrl_hdlr, &ov02c10_ctrl_ops,
+ V4L2_CID_HBLANK, h_blank, h_blank,
+ 1, h_blank);
+ if (ov02c10->hblank)
+ ov02c10->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+ ov02c10->privacy_status = v4l2_ctrl_new_std(ctrl_hdlr, &ov02c10_ctrl_ops,
+ V4L2_CID_PRIVACY, 0, 1, 1, 0);
+
+ v4l2_ctrl_new_std(ctrl_hdlr, &ov02c10_ctrl_ops, V4L2_CID_ANALOGUE_GAIN,
+ OV02C10_ANAL_GAIN_MIN, OV02C10_ANAL_GAIN_MAX,
+ OV02C10_ANAL_GAIN_STEP, OV02C10_ANAL_GAIN_DEFAULT);
+ v4l2_ctrl_new_std(ctrl_hdlr, &ov02c10_ctrl_ops, V4L2_CID_DIGITAL_GAIN,
+ OV02C10_DGTL_GAIN_MIN, OV02C10_DGTL_GAIN_MAX,
+ OV02C10_DGTL_GAIN_STEP, OV02C10_DGTL_GAIN_DEFAULT);
+ exposure_max = cur_mode->vts_def - OV02C10_EXPOSURE_MAX_MARGIN;
+ ov02c10->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &ov02c10_ctrl_ops,
+ V4L2_CID_EXPOSURE,
+ OV02C10_EXPOSURE_MIN,
+ exposure_max,
+ OV02C10_EXPOSURE_STEP,
+ exposure_max);
+ v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &ov02c10_ctrl_ops,
+ V4L2_CID_TEST_PATTERN,
+ ARRAY_SIZE(ov02c10_test_pattern_menu) - 1,
+ 0, 0, ov02c10_test_pattern_menu);
+ if (ctrl_hdlr->error)
+ return ctrl_hdlr->error;
+
+ ov02c10->sd.ctrl_handler = ctrl_hdlr;
+
+ return 0;
+}
+
+static void ov02c10_update_pad_format(const struct ov02c10_mode *mode,
+ struct v4l2_mbus_framefmt *fmt)
+{
+ fmt->width = mode->width;
+ fmt->height = mode->height;
+ fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10;
+ fmt->field = V4L2_FIELD_NONE;
+}
+
+static void ov02c10_vsc_privacy_callback(void *handle,
+ enum vsc_privacy_status status)
+{
+ struct ov02c10 *ov02c10 = handle;
+
+ v4l2_ctrl_s_ctrl(ov02c10->privacy_status, !status);
+}
+
+static int ov02c10_start_streaming(struct ov02c10 *ov02c10)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&ov02c10->sd);
+ const struct ov02c10_reg_list *reg_list;
+ int link_freq_index;
+ int ret = 0;
+ struct vsc_mipi_config conf;
+ struct vsc_camera_status status;
+
+ conf.lane_num = OV02C10_DATA_LANES;
+ /* frequency unit 100k */
+ conf.freq = OV02C10_LINK_FREQ_400MHZ / 100000;
+ ret = vsc_acquire_camera_sensor(&conf, ov02c10_vsc_privacy_callback,
+ ov02c10, &status);
+ if (ret) {
+ dev_err(&client->dev, "Acquire VSC failed");
+ return ret;
+ }
+ __v4l2_ctrl_s_ctrl(ov02c10->privacy_status, !(status.status));
+ link_freq_index = ov02c10->cur_mode->link_freq_index;
+ reg_list = &link_freq_configs[link_freq_index].reg_list;
+ ret = ov02c10_write_reg_list(ov02c10, reg_list);
+ if (ret) {
+ dev_err(&client->dev, "failed to set plls");
+ return ret;
+ }
+
+ reg_list = &ov02c10->cur_mode->reg_list;
+ ret = ov02c10_write_reg_list(ov02c10, reg_list);
+ if (ret) {
+ dev_err(&client->dev, "failed to set mode");
+ return ret;
+ }
+
+ ret = __v4l2_ctrl_handler_setup(ov02c10->sd.ctrl_handler);
+ if (ret)
+ return ret;
+
+ ret = ov02c10_write_reg(ov02c10, OV02C10_REG_MODE_SELECT, 1,
+ OV02C10_MODE_STREAMING);
+ if (ret)
+ dev_err(&client->dev, "failed to start streaming");
+
+ return ret;
+}
+
+static void ov02c10_stop_streaming(struct ov02c10 *ov02c10)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&ov02c10->sd);
+ int ret = 0;
+ struct vsc_camera_status status;
+
+ ret = ov02c10_write_reg(ov02c10, OV02C10_REG_MODE_SELECT, 1,
+ OV02C10_MODE_STANDBY);
+ if (ret)
+ dev_err(&client->dev, "failed to stop streaming");
+ ret = vsc_release_camera_sensor(&status);
+ if (ret)
+ dev_err(&client->dev, "Release VSC failed");
+}
+
+static int ov02c10_set_stream(struct v4l2_subdev *sd, int enable)
+{
+ struct ov02c10 *ov02c10 = to_ov02c10(sd);
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ int ret = 0;
+
+ if (ov02c10->streaming == enable)
+ return 0;
+
+ mutex_lock(&ov02c10->mutex);
+ if (enable) {
+ ret = pm_runtime_get_sync(&client->dev);
+ if (ret < 0) {
+ pm_runtime_put_noidle(&client->dev);
+ mutex_unlock(&ov02c10->mutex);
+ return ret;
+ }
+
+ ret = ov02c10_start_streaming(ov02c10);
+ if (ret) {
+ enable = 0;
+ ov02c10_stop_streaming(ov02c10);
+ pm_runtime_put(&client->dev);
+ }
+ } else {
+ ov02c10_stop_streaming(ov02c10);
+ pm_runtime_put(&client->dev);
+ }
+
+ ov02c10->streaming = enable;
+ mutex_unlock(&ov02c10->mutex);
+
+ return ret;
+}
+
+static int __maybe_unused ov02c10_suspend(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct ov02c10 *ov02c10 = to_ov02c10(sd);
+
+ mutex_lock(&ov02c10->mutex);
+ if (ov02c10->streaming)
+ ov02c10_stop_streaming(ov02c10);
+
+ mutex_unlock(&ov02c10->mutex);
+
+ return 0;
+}
+
+static int __maybe_unused ov02c10_resume(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct ov02c10 *ov02c10 = to_ov02c10(sd);
+ int ret = 0;
+
+ mutex_lock(&ov02c10->mutex);
+ if (!ov02c10->streaming)
+ goto exit;
+
+ ret = ov02c10_start_streaming(ov02c10);
+ if (ret) {
+ ov02c10->streaming = false;
+ ov02c10_stop_streaming(ov02c10);
+ }
+
+exit:
+ mutex_unlock(&ov02c10->mutex);
+ return ret;
+}
+
+static int ov02c10_set_format(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_format *fmt)
+{
+ struct ov02c10 *ov02c10 = to_ov02c10(sd);
+ const struct ov02c10_mode *mode;
+ s32 vblank_def, h_blank;
+
+ mode = v4l2_find_nearest_size(supported_modes,
+ ARRAY_SIZE(supported_modes), width,
+ height, fmt->format.width,
+ fmt->format.height);
+
+ mutex_lock(&ov02c10->mutex);
+ ov02c10_update_pad_format(mode, &fmt->format);
+ if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+ *v4l2_subdev_get_try_format(sd, sd_state, fmt->pad) = fmt->format;
+ } else {
+ ov02c10->cur_mode = mode;
+ __v4l2_ctrl_s_ctrl(ov02c10->link_freq, mode->link_freq_index);
+ __v4l2_ctrl_s_ctrl_int64(ov02c10->pixel_rate, OV02C10_SCLK);
+
+ /* Update limits and set FPS to default */
+ vblank_def = mode->vts_def - mode->height;
+ __v4l2_ctrl_modify_range(ov02c10->vblank,
+ mode->vts_min - mode->height,
+ OV02C10_VTS_MAX - mode->height, 1,
+ vblank_def);
+ __v4l2_ctrl_s_ctrl(ov02c10->vblank, vblank_def);
+ h_blank = mode->hts - mode->width;
+ __v4l2_ctrl_modify_range(ov02c10->hblank, h_blank, h_blank, 1,
+ h_blank);
+ }
+ mutex_unlock(&ov02c10->mutex);
+
+ return 0;
+}
+
+static int ov02c10_get_format(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_format *fmt)
+{
+ struct ov02c10 *ov02c10 = to_ov02c10(sd);
+
+ mutex_lock(&ov02c10->mutex);
+ if (fmt->which == V4L2_SUBDEV_FORMAT_TRY)
+ fmt->format = *v4l2_subdev_get_try_format(&ov02c10->sd,
+ sd_state, fmt->pad);
+ else
+ ov02c10_update_pad_format(ov02c10->cur_mode, &fmt->format);
+
+ mutex_unlock(&ov02c10->mutex);
+
+ return 0;
+}
+
+static int ov02c10_enum_mbus_code(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_mbus_code_enum *code)
+{
+ if (code->index > 0)
+ return -EINVAL;
+
+ code->code = MEDIA_BUS_FMT_SGRBG10_1X10;
+
+ return 0;
+}
+
+static int ov02c10_enum_frame_size(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_frame_size_enum *fse)
+{
+ if (fse->index >= ARRAY_SIZE(supported_modes))
+ return -EINVAL;
+
+ if (fse->code != MEDIA_BUS_FMT_SGRBG10_1X10)
+ return -EINVAL;
+
+ fse->min_width = supported_modes[fse->index].width;
+ fse->max_width = fse->min_width;
+ fse->min_height = supported_modes[fse->index].height;
+ fse->max_height = fse->min_height;
+
+ return 0;
+}
+
+static int ov02c10_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
+{
+ struct ov02c10 *ov02c10 = to_ov02c10(sd);
+
+ mutex_lock(&ov02c10->mutex);
+ ov02c10_update_pad_format(&supported_modes[0],
+ v4l2_subdev_get_try_format(sd, fh->state, 0));
+ mutex_unlock(&ov02c10->mutex);
+
+ return 0;
+}
+
+static const struct v4l2_subdev_video_ops ov02c10_video_ops = {
+ .s_stream = ov02c10_set_stream,
+};
+
+static const struct v4l2_subdev_pad_ops ov02c10_pad_ops = {
+ .set_fmt = ov02c10_set_format,
+ .get_fmt = ov02c10_get_format,
+ .enum_mbus_code = ov02c10_enum_mbus_code,
+ .enum_frame_size = ov02c10_enum_frame_size,
+};
+
+static const struct v4l2_subdev_ops ov02c10_subdev_ops = {
+ .video = &ov02c10_video_ops,
+ .pad = &ov02c10_pad_ops,
+};
+
+static const struct media_entity_operations ov02c10_subdev_entity_ops = {
+ .link_validate = v4l2_subdev_link_validate,
+};
+
+static const struct v4l2_subdev_internal_ops ov02c10_internal_ops = {
+ .open = ov02c10_open,
+};
+
+static int ov02c10_identify_module(struct ov02c10 *ov02c10)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(&ov02c10->sd);
+ int ret;
+ u32 val;
+
+ ret = ov02c10_read_reg(ov02c10, OV02C10_REG_CHIP_ID, 3, &val);
+ if (ret)
+ return ret;
+
+ if (val != OV02C10_CHIP_ID) {
+ dev_err(&client->dev, "chip id mismatch: %x!=%x",
+ OV02C10_CHIP_ID, val);
+ return -ENXIO;
+ }
+
+ return 0;
+}
+
+static int ov02c10_remove(struct i2c_client *client)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct ov02c10 *ov02c10 = to_ov02c10(sd);
+
+ v4l2_async_unregister_subdev(sd);
+ media_entity_cleanup(&sd->entity);
+ v4l2_ctrl_handler_free(sd->ctrl_handler);
+ pm_runtime_disable(&client->dev);
+ mutex_destroy(&ov02c10->mutex);
+
+ return 0;
+}
+
+static int ov02c10_probe(struct i2c_client *client)
+{
+ struct ov02c10 *ov02c10;
+ int ret = 0;
+ struct vsc_mipi_config conf;
+ struct vsc_camera_status status;
+
+ conf.lane_num = OV02C10_DATA_LANES;
+ /* frequency unit 100k */
+ conf.freq = OV02C10_LINK_FREQ_400MHZ / 100000;
+ ret = vsc_acquire_camera_sensor(&conf, NULL, NULL, &status);
+ if (ret == -EAGAIN) {
+ dev_dbg(&client->dev, "VSC not ready, will re-probe");
+ return -EPROBE_DEFER;
+ } else if (ret) {
+ dev_err(&client->dev, "Acquire VSC failed");
+ return ret;
+ }
+ ov02c10 = devm_kzalloc(&client->dev, sizeof(*ov02c10), GFP_KERNEL);
+ if (!ov02c10) {
+ ret = -ENOMEM;
+ goto probe_error_ret;
+ }
+
+ v4l2_i2c_subdev_init(&ov02c10->sd, client, &ov02c10_subdev_ops);
+
+ ret = ov02c10_identify_module(ov02c10);
+ if (ret) {
+ dev_err(&client->dev, "failed to find sensor: %d", ret);
+ goto probe_error_ret;
+ }
+
+ mutex_init(&ov02c10->mutex);
+ ov02c10->cur_mode = &supported_modes[0];
+ ret = ov02c10_init_controls(ov02c10);
+ if (ret) {
+ dev_err(&client->dev, "failed to init controls: %d", ret);
+ goto probe_error_v4l2_ctrl_handler_free;
+ }
+
+ ov02c10->sd.internal_ops = &ov02c10_internal_ops;
+ ov02c10->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+ ov02c10->sd.entity.ops = &ov02c10_subdev_entity_ops;
+ ov02c10->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
+ ov02c10->pad.flags = MEDIA_PAD_FL_SOURCE;
+ ret = media_entity_pads_init(&ov02c10->sd.entity, 1, &ov02c10->pad);
+ if (ret) {
+ dev_err(&client->dev, "failed to init entity pads: %d", ret);
+ goto probe_error_v4l2_ctrl_handler_free;
+ }
+
+ ret = v4l2_async_register_subdev_sensor(&ov02c10->sd);
+ if (ret < 0) {
+ dev_err(&client->dev, "failed to register V4L2 subdev: %d",
+ ret);
+ goto probe_error_media_entity_cleanup;
+ }
+
+ vsc_release_camera_sensor(&status);
+ /*
+ * Device is already turned on by i2c-core with ACPI domain PM.
+ * Enable runtime PM and turn off the device.
+ */
+ pm_runtime_set_active(&client->dev);
+ pm_runtime_enable(&client->dev);
+ pm_runtime_idle(&client->dev);
+
+ return 0;
+
+probe_error_media_entity_cleanup:
+ media_entity_cleanup(&ov02c10->sd.entity);
+
+probe_error_v4l2_ctrl_handler_free:
+ v4l2_ctrl_handler_free(ov02c10->sd.ctrl_handler);
+ mutex_destroy(&ov02c10->mutex);
+
+probe_error_ret:
+ vsc_release_camera_sensor(&status);
+ return ret;
+}
+
+static const struct dev_pm_ops ov02c10_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(ov02c10_suspend, ov02c10_resume)
+};
+
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id ov02c10_acpi_ids[] = {
+ {"OVTI02C1"},
+ {}
+};
+
+MODULE_DEVICE_TABLE(acpi, ov02c10_acpi_ids);
+#endif
+
+static struct i2c_driver ov02c10_i2c_driver = {
+ .driver = {
+ .name = "ov02c10",
+ .pm = &ov02c10_pm_ops,
+ .acpi_match_table = ACPI_PTR(ov02c10_acpi_ids),
+ },
+ .probe_new = ov02c10_probe,
+ .remove = ov02c10_remove,
+};
+
+module_i2c_driver(ov02c10_i2c_driver);
+
+MODULE_AUTHOR("Hao Yao <hao.yao@intel.com>");
+MODULE_DESCRIPTION("OmniVision OV02C10 sensor driver");
+MODULE_LICENSE("GPL v2");
projects / mirror_ubuntu-jammy-kernel.git / commitdiff