| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Tianshu Qiu | 4751 | 97.74% | 1 | 14.29% |
| Bingbu Cao | 96 | 1.97% | 2 | 28.57% |
| Tomi Valkeinen | 11 | 0.23% | 1 | 14.29% |
| Mauro Carvalho Chehab | 1 | 0.02% | 1 | 14.29% |
| Uwe Kleine-König | 1 | 0.02% | 1 | 14.29% |
| Sakari Ailus | 1 | 0.02% | 1 | 14.29% |
| Total | 4861 | 7 |
// SPDX-License-Identifier: GPL-2.0 // Copyright (c) 2020 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 <media/v4l2-ctrls.h> #include <media/v4l2-device.h> #include <media/v4l2-fwnode.h> #define OV9734_LINK_FREQ_180MHZ 180000000ULL #define OV9734_SCLK 36000000LL #define OV9734_MCLK 19200000 /* ov9734 only support 1-lane mipi output */ #define OV9734_DATA_LANES 1 #define OV9734_RGB_DEPTH 10 #define OV9734_REG_CHIP_ID 0x300a #define OV9734_CHIP_ID 0x9734 #define OV9734_REG_MODE_SELECT 0x0100 #define OV9734_MODE_STANDBY 0x00 #define OV9734_MODE_STREAMING 0x01 /* vertical-timings from sensor */ #define OV9734_REG_VTS 0x380e #define OV9734_VTS_30FPS 0x0322 #define OV9734_VTS_30FPS_MIN 0x0322 #define OV9734_VTS_MAX 0x7fff /* horizontal-timings from sensor */ #define OV9734_REG_HTS 0x380c /* Exposure controls from sensor */ #define OV9734_REG_EXPOSURE 0x3500 #define OV9734_EXPOSURE_MIN 4 #define OV9734_EXPOSURE_MAX_MARGIN 4 #define OV9734_EXPOSURE_STEP 1 /* Analog gain controls from sensor */ #define OV9734_REG_ANALOG_GAIN 0x350a #define OV9734_ANAL_GAIN_MIN 16 #define OV9734_ANAL_GAIN_MAX 248 #define OV9734_ANAL_GAIN_STEP 1 /* Digital gain controls from sensor */ #define OV9734_REG_MWB_R_GAIN 0x5180 #define OV9734_REG_MWB_G_GAIN 0x5182 #define OV9734_REG_MWB_B_GAIN 0x5184 #define OV9734_DGTL_GAIN_MIN 256 #define OV9734_DGTL_GAIN_MAX 1023 #define OV9734_DGTL_GAIN_STEP 1 #define OV9734_DGTL_GAIN_DEFAULT 256 /* Test Pattern Control */ #define OV9734_REG_TEST_PATTERN 0x5080 #define OV9734_TEST_PATTERN_ENABLE BIT(7) #define OV9734_TEST_PATTERN_BAR_SHIFT 2 /* Group Access */ #define OV9734_REG_GROUP_ACCESS 0x3208 #define OV9734_GROUP_HOLD_START 0x0 #define OV9734_GROUP_HOLD_END 0x10 #define OV9734_GROUP_HOLD_LAUNCH 0xa0 enum { OV9734_LINK_FREQ_180MHZ_INDEX, }; struct ov9734_reg { u16 address; u8 val; }; struct ov9734_reg_list { u32 num_of_regs; const struct ov9734_reg *regs; }; struct ov9734_link_freq_config { const struct ov9734_reg_list reg_list; }; struct ov9734_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 ov9734_reg_list reg_list; }; static const struct ov9734_reg mipi_data_rate_360mbps[] = { {0x3030, 0x19}, {0x3080, 0x02}, {0x3081, 0x4b}, {0x3082, 0x04}, {0x3083, 0x00}, {0x3084, 0x02}, {0x3085, 0x01}, {0x3086, 0x01}, {0x3089, 0x01}, {0x308a, 0x00}, {0x301e, 0x15}, {0x3103, 0x01}, }; static const struct ov9734_reg mode_1296x734_regs[] = { {0x3001, 0x00}, {0x3002, 0x00}, {0x3007, 0x00}, {0x3010, 0x00}, {0x3011, 0x08}, {0x3014, 0x22}, {0x3600, 0x55}, {0x3601, 0x02}, {0x3605, 0x22}, {0x3611, 0xe7}, {0x3654, 0x10}, {0x3655, 0x77}, {0x3656, 0x77}, {0x3657, 0x07}, {0x3658, 0x22}, {0x3659, 0x22}, {0x365a, 0x02}, {0x3784, 0x05}, {0x3785, 0x55}, {0x37c0, 0x07}, {0x3800, 0x00}, {0x3801, 0x04}, {0x3802, 0x00}, {0x3803, 0x04}, {0x3804, 0x05}, {0x3805, 0x0b}, {0x3806, 0x02}, {0x3807, 0xdb}, {0x3808, 0x05}, {0x3809, 0x00}, {0x380a, 0x02}, {0x380b, 0xd0}, {0x380c, 0x05}, {0x380d, 0xc6}, {0x380e, 0x03}, {0x380f, 0x22}, {0x3810, 0x00}, {0x3811, 0x04}, {0x3812, 0x00}, {0x3813, 0x04}, {0x3816, 0x00}, {0x3817, 0x00}, {0x3818, 0x00}, {0x3819, 0x04}, {0x3820, 0x18}, {0x3821, 0x00}, {0x382c, 0x06}, {0x3500, 0x00}, {0x3501, 0x31}, {0x3502, 0x00}, {0x3503, 0x03}, {0x3504, 0x00}, {0x3505, 0x00}, {0x3509, 0x10}, {0x350a, 0x00}, {0x350b, 0x40}, {0x3d00, 0x00}, {0x3d01, 0x00}, {0x3d02, 0x00}, {0x3d03, 0x00}, {0x3d04, 0x00}, {0x3d05, 0x00}, {0x3d06, 0x00}, {0x3d07, 0x00}, {0x3d08, 0x00}, {0x3d09, 0x00}, {0x3d0a, 0x00}, {0x3d0b, 0x00}, {0x3d0c, 0x00}, {0x3d0d, 0x00}, {0x3d0e, 0x00}, {0x3d0f, 0x00}, {0x3d80, 0x00}, {0x3d81, 0x00}, {0x3d82, 0x38}, {0x3d83, 0xa4}, {0x3d84, 0x00}, {0x3d85, 0x00}, {0x3d86, 0x1f}, {0x3d87, 0x03}, {0x3d8b, 0x00}, {0x3d8f, 0x00}, {0x4001, 0xe0}, {0x4009, 0x0b}, {0x4300, 0x03}, {0x4301, 0xff}, {0x4304, 0x00}, {0x4305, 0x00}, {0x4309, 0x00}, {0x4600, 0x00}, {0x4601, 0x80}, {0x4800, 0x00}, {0x4805, 0x00}, {0x4821, 0x50}, {0x4823, 0x50}, {0x4837, 0x2d}, {0x4a00, 0x00}, {0x4f00, 0x80}, {0x4f01, 0x10}, {0x4f02, 0x00}, {0x4f03, 0x00}, {0x4f04, 0x00}, {0x4f05, 0x00}, {0x4f06, 0x00}, {0x4f07, 0x00}, {0x4f08, 0x00}, {0x4f09, 0x00}, {0x5000, 0x2f}, {0x500c, 0x00}, {0x500d, 0x00}, {0x500e, 0x00}, {0x500f, 0x00}, {0x5010, 0x00}, {0x5011, 0x00}, {0x5012, 0x00}, {0x5013, 0x00}, {0x5014, 0x00}, {0x5015, 0x00}, {0x5016, 0x00}, {0x5017, 0x00}, {0x5080, 0x00}, {0x5180, 0x01}, {0x5181, 0x00}, {0x5182, 0x01}, {0x5183, 0x00}, {0x5184, 0x01}, {0x5185, 0x00}, {0x5708, 0x06}, {0x380f, 0x2a}, {0x5780, 0x3e}, {0x5781, 0x0f}, {0x5782, 0x44}, {0x5783, 0x02}, {0x5784, 0x01}, {0x5785, 0x01}, {0x5786, 0x00}, {0x5787, 0x04}, {0x5788, 0x02}, {0x5789, 0x0f}, {0x578a, 0xfd}, {0x578b, 0xf5}, {0x578c, 0xf5}, {0x578d, 0x03}, {0x578e, 0x08}, {0x578f, 0x0c}, {0x5790, 0x08}, {0x5791, 0x04}, {0x5792, 0x00}, {0x5793, 0x52}, {0x5794, 0xa3}, {0x5000, 0x3f}, {0x3801, 0x00}, {0x3803, 0x00}, {0x3805, 0x0f}, {0x3807, 0xdf}, {0x3809, 0x10}, {0x380b, 0xde}, {0x3811, 0x00}, {0x3813, 0x01}, }; static const char * const ov9734_test_pattern_menu[] = { "Disabled", "Standard Color Bar", "Top-Bottom Darker Color Bar", "Right-Left Darker Color Bar", "Bottom-Top Darker Color Bar", }; static const s64 link_freq_menu_items[] = { OV9734_LINK_FREQ_180MHZ, }; static const struct ov9734_link_freq_config link_freq_configs[] = { [OV9734_LINK_FREQ_180MHZ_INDEX] = { .reg_list = { .num_of_regs = ARRAY_SIZE(mipi_data_rate_360mbps), .regs = mipi_data_rate_360mbps, } }, }; static const struct ov9734_mode supported_modes[] = { { .width = 1296, .height = 734, .hts = 0x5c6, .vts_def = OV9734_VTS_30FPS, .vts_min = OV9734_VTS_30FPS_MIN, .reg_list = { .num_of_regs = ARRAY_SIZE(mode_1296x734_regs), .regs = mode_1296x734_regs, }, .link_freq_index = OV9734_LINK_FREQ_180MHZ_INDEX, }, }; struct ov9734 { 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; /* Current mode */ const struct ov9734_mode *cur_mode; /* To serialize asynchronus callbacks */ struct mutex mutex; /* Streaming on/off */ bool streaming; }; static inline struct ov9734 *to_ov9734(struct v4l2_subdev *subdev) { return container_of(subdev, struct ov9734, sd); } static u64 to_pixel_rate(u32 f_index) { u64 pixel_rate = link_freq_menu_items[f_index] * 2 * OV9734_DATA_LANES; do_div(pixel_rate, OV9734_RGB_DEPTH); return pixel_rate; } static u64 to_pixels_per_line(u32 hts, u32 f_index) { u64 ppl = hts * to_pixel_rate(f_index); do_div(ppl, OV9734_SCLK); return ppl; } static int ov9734_read_reg(struct ov9734 *ov9734, u16 reg, u16 len, u32 *val) { struct i2c_client *client = v4l2_get_subdevdata(&ov9734->sd); struct i2c_msg msgs[2]; u8 addr_buf[2]; u8 data_buf[4] = {0}; int ret; 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 ov9734_write_reg(struct ov9734 *ov9734, u16 reg, u16 len, u32 val) { struct i2c_client *client = v4l2_get_subdevdata(&ov9734->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 ov9734_write_reg_list(struct ov9734 *ov9734, const struct ov9734_reg_list *r_list) { struct i2c_client *client = v4l2_get_subdevdata(&ov9734->sd); unsigned int i; int ret; for (i = 0; i < r_list->num_of_regs; i++) { ret = ov9734_write_reg(ov9734, 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 ov9734_update_digital_gain(struct ov9734 *ov9734, u32 d_gain) { int ret; ret = ov9734_write_reg(ov9734, OV9734_REG_GROUP_ACCESS, 1, OV9734_GROUP_HOLD_START); if (ret) return ret; ret = ov9734_write_reg(ov9734, OV9734_REG_MWB_R_GAIN, 2, d_gain); if (ret) return ret; ret = ov9734_write_reg(ov9734, OV9734_REG_MWB_G_GAIN, 2, d_gain); if (ret) return ret; ret = ov9734_write_reg(ov9734, OV9734_REG_MWB_B_GAIN, 2, d_gain); if (ret) return ret; ret = ov9734_write_reg(ov9734, OV9734_REG_GROUP_ACCESS, 1, OV9734_GROUP_HOLD_END); if (ret) return ret; ret = ov9734_write_reg(ov9734, OV9734_REG_GROUP_ACCESS, 1, OV9734_GROUP_HOLD_LAUNCH); return ret; } static int ov9734_test_pattern(struct ov9734 *ov9734, u32 pattern) { if (pattern) pattern = (pattern - 1) << OV9734_TEST_PATTERN_BAR_SHIFT | OV9734_TEST_PATTERN_ENABLE; return ov9734_write_reg(ov9734, OV9734_REG_TEST_PATTERN, 1, pattern); } static int ov9734_set_ctrl(struct v4l2_ctrl *ctrl) { struct ov9734 *ov9734 = container_of(ctrl->handler, struct ov9734, ctrl_handler); struct i2c_client *client = v4l2_get_subdevdata(&ov9734->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 = ov9734->cur_mode->height + ctrl->val - OV9734_EXPOSURE_MAX_MARGIN; __v4l2_ctrl_modify_range(ov9734->exposure, ov9734->exposure->minimum, exposure_max, ov9734->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 = ov9734_write_reg(ov9734, OV9734_REG_ANALOG_GAIN, 2, ctrl->val); break; case V4L2_CID_DIGITAL_GAIN: ret = ov9734_update_digital_gain(ov9734, ctrl->val); break; case V4L2_CID_EXPOSURE: /* 4 least significant bits of expsoure are fractional part */ ret = ov9734_write_reg(ov9734, OV9734_REG_EXPOSURE, 3, ctrl->val << 4); break; case V4L2_CID_VBLANK: ret = ov9734_write_reg(ov9734, OV9734_REG_VTS, 2, ov9734->cur_mode->height + ctrl->val); break; case V4L2_CID_TEST_PATTERN: ret = ov9734_test_pattern(ov9734, ctrl->val); break; default: ret = -EINVAL; break; } pm_runtime_put(&client->dev); return ret; } static const struct v4l2_ctrl_ops ov9734_ctrl_ops = { .s_ctrl = ov9734_set_ctrl, }; static int ov9734_init_controls(struct ov9734 *ov9734) { struct v4l2_ctrl_handler *ctrl_hdlr; const struct ov9734_mode *cur_mode; s64 exposure_max, h_blank, pixel_rate; u32 vblank_min, vblank_max, vblank_default; int ret, size; ctrl_hdlr = &ov9734->ctrl_handler; ret = v4l2_ctrl_handler_init(ctrl_hdlr, 8); if (ret) return ret; ctrl_hdlr->lock = &ov9734->mutex; cur_mode = ov9734->cur_mode; size = ARRAY_SIZE(link_freq_menu_items); ov9734->link_freq = v4l2_ctrl_new_int_menu(ctrl_hdlr, &ov9734_ctrl_ops, V4L2_CID_LINK_FREQ, size - 1, 0, link_freq_menu_items); if (ov9734->link_freq) ov9734->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY; pixel_rate = to_pixel_rate(OV9734_LINK_FREQ_180MHZ_INDEX); ov9734->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &ov9734_ctrl_ops, V4L2_CID_PIXEL_RATE, 0, pixel_rate, 1, pixel_rate); vblank_min = cur_mode->vts_min - cur_mode->height; vblank_max = OV9734_VTS_MAX - cur_mode->height; vblank_default = cur_mode->vts_def - cur_mode->height; ov9734->vblank = v4l2_ctrl_new_std(ctrl_hdlr, &ov9734_ctrl_ops, V4L2_CID_VBLANK, vblank_min, vblank_max, 1, vblank_default); h_blank = to_pixels_per_line(cur_mode->hts, cur_mode->link_freq_index); h_blank -= cur_mode->width; ov9734->hblank = v4l2_ctrl_new_std(ctrl_hdlr, &ov9734_ctrl_ops, V4L2_CID_HBLANK, h_blank, h_blank, 1, h_blank); if (ov9734->hblank) ov9734->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; v4l2_ctrl_new_std(ctrl_hdlr, &ov9734_ctrl_ops, V4L2_CID_ANALOGUE_GAIN, OV9734_ANAL_GAIN_MIN, OV9734_ANAL_GAIN_MAX, OV9734_ANAL_GAIN_STEP, OV9734_ANAL_GAIN_MIN); v4l2_ctrl_new_std(ctrl_hdlr, &ov9734_ctrl_ops, V4L2_CID_DIGITAL_GAIN, OV9734_DGTL_GAIN_MIN, OV9734_DGTL_GAIN_MAX, OV9734_DGTL_GAIN_STEP, OV9734_DGTL_GAIN_DEFAULT); exposure_max = ov9734->cur_mode->vts_def - OV9734_EXPOSURE_MAX_MARGIN; ov9734->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &ov9734_ctrl_ops, V4L2_CID_EXPOSURE, OV9734_EXPOSURE_MIN, exposure_max, OV9734_EXPOSURE_STEP, exposure_max); v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &ov9734_ctrl_ops, V4L2_CID_TEST_PATTERN, ARRAY_SIZE(ov9734_test_pattern_menu) - 1, 0, 0, ov9734_test_pattern_menu); if (ctrl_hdlr->error) return ctrl_hdlr->error; ov9734->sd.ctrl_handler = ctrl_hdlr; return 0; } static void ov9734_update_pad_format(const struct ov9734_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 int ov9734_start_streaming(struct ov9734 *ov9734) { struct i2c_client *client = v4l2_get_subdevdata(&ov9734->sd); const struct ov9734_reg_list *reg_list; int link_freq_index, ret; link_freq_index = ov9734->cur_mode->link_freq_index; reg_list = &link_freq_configs[link_freq_index].reg_list; ret = ov9734_write_reg_list(ov9734, reg_list); if (ret) { dev_err(&client->dev, "failed to set plls"); return ret; } reg_list = &ov9734->cur_mode->reg_list; ret = ov9734_write_reg_list(ov9734, reg_list); if (ret) { dev_err(&client->dev, "failed to set mode"); return ret; } ret = __v4l2_ctrl_handler_setup(ov9734->sd.ctrl_handler); if (ret) return ret; ret = ov9734_write_reg(ov9734, OV9734_REG_MODE_SELECT, 1, OV9734_MODE_STREAMING); if (ret) dev_err(&client->dev, "failed to start stream"); return ret; } static void ov9734_stop_streaming(struct ov9734 *ov9734) { struct i2c_client *client = v4l2_get_subdevdata(&ov9734->sd); if (ov9734_write_reg(ov9734, OV9734_REG_MODE_SELECT, 1, OV9734_MODE_STANDBY)) dev_err(&client->dev, "failed to stop stream"); } static int ov9734_set_stream(struct v4l2_subdev *sd, int enable) { struct ov9734 *ov9734 = to_ov9734(sd); struct i2c_client *client = v4l2_get_subdevdata(sd); int ret = 0; mutex_lock(&ov9734->mutex); if (ov9734->streaming == enable) { mutex_unlock(&ov9734->mutex); return 0; } if (enable) { ret = pm_runtime_resume_and_get(&client->dev); if (ret < 0) { mutex_unlock(&ov9734->mutex); return ret; } ret = ov9734_start_streaming(ov9734); if (ret) { enable = 0; ov9734_stop_streaming(ov9734); pm_runtime_put(&client->dev); } } else { ov9734_stop_streaming(ov9734); pm_runtime_put(&client->dev); } ov9734->streaming = enable; mutex_unlock(&ov9734->mutex); return ret; } static int __maybe_unused ov9734_suspend(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct v4l2_subdev *sd = i2c_get_clientdata(client); struct ov9734 *ov9734 = to_ov9734(sd); mutex_lock(&ov9734->mutex); if (ov9734->streaming) ov9734_stop_streaming(ov9734); mutex_unlock(&ov9734->mutex); return 0; } static int __maybe_unused ov9734_resume(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct v4l2_subdev *sd = i2c_get_clientdata(client); struct ov9734 *ov9734 = to_ov9734(sd); int ret = 0; mutex_lock(&ov9734->mutex); if (!ov9734->streaming) goto exit; ret = ov9734_start_streaming(ov9734); if (ret) { ov9734->streaming = false; ov9734_stop_streaming(ov9734); } exit: mutex_unlock(&ov9734->mutex); return ret; } static int ov9734_set_format(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *fmt) { struct ov9734 *ov9734 = to_ov9734(sd); const struct ov9734_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(&ov9734->mutex); ov9734_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 { ov9734->cur_mode = mode; __v4l2_ctrl_s_ctrl(ov9734->link_freq, mode->link_freq_index); __v4l2_ctrl_s_ctrl_int64(ov9734->pixel_rate, to_pixel_rate(mode->link_freq_index)); /* Update limits and set FPS to default */ vblank_def = mode->vts_def - mode->height; __v4l2_ctrl_modify_range(ov9734->vblank, mode->vts_min - mode->height, OV9734_VTS_MAX - mode->height, 1, vblank_def); __v4l2_ctrl_s_ctrl(ov9734->vblank, vblank_def); h_blank = to_pixels_per_line(mode->hts, mode->link_freq_index) - mode->width; __v4l2_ctrl_modify_range(ov9734->hblank, h_blank, h_blank, 1, h_blank); } mutex_unlock(&ov9734->mutex); return 0; } static int ov9734_get_format(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *fmt) { struct ov9734 *ov9734 = to_ov9734(sd); mutex_lock(&ov9734->mutex); if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) fmt->format = *v4l2_subdev_get_try_format(&ov9734->sd, sd_state, fmt->pad); else ov9734_update_pad_format(ov9734->cur_mode, &fmt->format); mutex_unlock(&ov9734->mutex); return 0; } static int ov9734_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 ov9734_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 ov9734_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) { struct ov9734 *ov9734 = to_ov9734(sd); mutex_lock(&ov9734->mutex); ov9734_update_pad_format(&supported_modes[0], v4l2_subdev_get_try_format(sd, fh->state, 0)); mutex_unlock(&ov9734->mutex); return 0; } static const struct v4l2_subdev_video_ops ov9734_video_ops = { .s_stream = ov9734_set_stream, }; static const struct v4l2_subdev_pad_ops ov9734_pad_ops = { .set_fmt = ov9734_set_format, .get_fmt = ov9734_get_format, .enum_mbus_code = ov9734_enum_mbus_code, .enum_frame_size = ov9734_enum_frame_size, }; static const struct v4l2_subdev_ops ov9734_subdev_ops = { .video = &ov9734_video_ops, .pad = &ov9734_pad_ops, }; static const struct media_entity_operations ov9734_subdev_entity_ops = { .link_validate = v4l2_subdev_link_validate, }; static const struct v4l2_subdev_internal_ops ov9734_internal_ops = { .open = ov9734_open, }; static int ov9734_identify_module(struct ov9734 *ov9734) { struct i2c_client *client = v4l2_get_subdevdata(&ov9734->sd); int ret; u32 val; ret = ov9734_read_reg(ov9734, OV9734_REG_CHIP_ID, 2, &val); if (ret) return ret; if (val != OV9734_CHIP_ID) { dev_err(&client->dev, "chip id mismatch: %x!=%x", OV9734_CHIP_ID, val); return -ENXIO; } return 0; } static int ov9734_check_hwcfg(struct device *dev) { struct fwnode_handle *ep; struct fwnode_handle *fwnode = dev_fwnode(dev); struct v4l2_fwnode_endpoint bus_cfg = { .bus_type = V4L2_MBUS_CSI2_DPHY }; u32 mclk; int ret; unsigned int i, j; if (!fwnode) return -ENXIO; ret = fwnode_property_read_u32(fwnode, "clock-frequency", &mclk); if (ret) return ret; if (mclk != OV9734_MCLK) { dev_err(dev, "external clock %d is not supported", mclk); return -EINVAL; } ep = fwnode_graph_get_next_endpoint(fwnode, NULL); if (!ep) return -ENXIO; ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg); fwnode_handle_put(ep); if (ret) return ret; if (!bus_cfg.nr_of_link_frequencies) { dev_err(dev, "no link frequencies defined"); ret = -EINVAL; goto check_hwcfg_error; } for (i = 0; i < ARRAY_SIZE(link_freq_menu_items); i++) { for (j = 0; j < bus_cfg.nr_of_link_frequencies; j++) { if (link_freq_menu_items[i] == bus_cfg.link_frequencies[j]) break; } if (j == bus_cfg.nr_of_link_frequencies) { dev_err(dev, "no link frequency %lld supported", link_freq_menu_items[i]); ret = -EINVAL; goto check_hwcfg_error; } } check_hwcfg_error: v4l2_fwnode_endpoint_free(&bus_cfg); return ret; } static void ov9734_remove(struct i2c_client *client) { struct v4l2_subdev *sd = i2c_get_clientdata(client); struct ov9734 *ov9734 = to_ov9734(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(&ov9734->mutex); } static int ov9734_probe(struct i2c_client *client) { struct ov9734 *ov9734; int ret; ret = ov9734_check_hwcfg(&client->dev); if (ret) { dev_err(&client->dev, "failed to check HW configuration: %d", ret); return ret; } ov9734 = devm_kzalloc(&client->dev, sizeof(*ov9734), GFP_KERNEL); if (!ov9734) return -ENOMEM; v4l2_i2c_subdev_init(&ov9734->sd, client, &ov9734_subdev_ops); ret = ov9734_identify_module(ov9734); if (ret) { dev_err(&client->dev, "failed to find sensor: %d", ret); return ret; } mutex_init(&ov9734->mutex); ov9734->cur_mode = &supported_modes[0]; ret = ov9734_init_controls(ov9734); if (ret) { dev_err(&client->dev, "failed to init controls: %d", ret); goto probe_error_v4l2_ctrl_handler_free; } ov9734->sd.internal_ops = &ov9734_internal_ops; ov9734->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; ov9734->sd.entity.ops = &ov9734_subdev_entity_ops; ov9734->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; ov9734->pad.flags = MEDIA_PAD_FL_SOURCE; ret = media_entity_pads_init(&ov9734->sd.entity, 1, &ov9734->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(&ov9734->sd); if (ret < 0) { dev_err(&client->dev, "failed to register V4L2 subdev: %d", ret); goto probe_error_media_entity_cleanup; } /* * 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(&ov9734->sd.entity); probe_error_v4l2_ctrl_handler_free: v4l2_ctrl_handler_free(ov9734->sd.ctrl_handler); mutex_destroy(&ov9734->mutex); return ret; } static const struct dev_pm_ops ov9734_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(ov9734_suspend, ov9734_resume) }; static const struct acpi_device_id ov9734_acpi_ids[] = { { "OVTI9734", }, {} }; MODULE_DEVICE_TABLE(acpi, ov9734_acpi_ids); static struct i2c_driver ov9734_i2c_driver = { .driver = { .name = "ov9734", .pm = &ov9734_pm_ops, .acpi_match_table = ov9734_acpi_ids, }, .probe_new = ov9734_probe, .remove = ov9734_remove, }; module_i2c_driver(ov9734_i2c_driver); MODULE_AUTHOR("Qiu, Tianshu <tian.shu.qiu@intel.com>"); MODULE_AUTHOR("Bingbu Cao <bingbu.cao@intel.com>"); MODULE_DESCRIPTION("OmniVision OV9734 sensor driver"); MODULE_LICENSE("GPL v2");
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