diff options
Diffstat (limited to 'drivers/media/i2c/imx274.c')
| -rw-r--r-- | drivers/media/i2c/imx274.c | 280 |
1 files changed, 205 insertions, 75 deletions
diff --git a/drivers/media/i2c/imx274.c b/drivers/media/i2c/imx274.c index e6aa9f32b6a8..54642d5f2d5b 100644 --- a/drivers/media/i2c/imx274.c +++ b/drivers/media/i2c/imx274.c @@ -18,7 +18,9 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/of_gpio.h> +#include <linux/pm_runtime.h> #include <linux/regmap.h> +#include <linux/regulator/consumer.h> #include <linux/slab.h> #include <linux/v4l2-mediabus.h> #include <linux/videodev2.h> @@ -65,7 +67,6 @@ */ #define IMX274_MIN_EXPOSURE_TIME (4 * 260 / 72) -#define IMX274_DEFAULT_BINNING IMX274_BINNING_OFF #define IMX274_MAX_WIDTH (3840) #define IMX274_MAX_HEIGHT (2160) #define IMX274_MAX_FRAME_RATE (120) @@ -131,6 +132,15 @@ #define IMX274_TABLE_WAIT_MS 0 #define IMX274_TABLE_END 1 +/* regulator supplies */ +static const char * const imx274_supply_names[] = { + "vddl", /* IF (1.2V) supply */ + "vdig", /* Digital Core (1.8V) supply */ + "vana", /* Analog (2.8V) supply */ +}; + +#define IMX274_NUM_SUPPLIES ARRAY_SIZE(imx274_supply_names) + /* * imx274 I2C operation related structure */ @@ -145,12 +155,6 @@ static const struct regmap_config imx274_regmap_config = { .cache_type = REGCACHE_RBTREE, }; -enum imx274_binning { - IMX274_BINNING_OFF, - IMX274_BINNING_2_1, - IMX274_BINNING_3_1, -}; - /* * Parameters for each imx274 readout mode. * @@ -158,7 +162,8 @@ enum imx274_binning { * implemented modes. * * @init_regs: registers to initialize the mode - * @bin_ratio: downscale factor (e.g. 3 for 3:1 binning) + * @wbin_ratio: width downscale factor (e.g. 3 for 1280; 3 = 3840/1280) + * @hbin_ratio: height downscale factor (e.g. 3 for 720; 3 = 2160/720) * @min_frame_len: Minimum frame length for each mode (see "Frame Rate * Adjustment (CSI-2)" in the datasheet) * @min_SHR: Minimum SHR register value (see "Shutter Setting (CSI-2)" in the @@ -169,7 +174,8 @@ enum imx274_binning { */ struct imx274_mode { const struct reg_8 *init_regs; - unsigned int bin_ratio; + u8 wbin_ratio; + u8 hbin_ratio; int min_frame_len; int min_SHR; int max_fps; @@ -333,6 +339,46 @@ static const struct reg_8 imx274_mode5_1280x720_raw10[] = { }; /* + * Vertical 2/8 subsampling horizontal 3 binning + * imx274 mode6(refer to datasheet) register configuration with + * 1280x540 resolution, raw10 data and mipi four lane output + */ +static const struct reg_8 imx274_mode6_1280x540_raw10[] = { + {0x3004, 0x04}, /* mode setting */ + {0x3005, 0x31}, + {0x3006, 0x00}, + {0x3007, 0x02}, /* mode setting */ + + {0x3018, 0xA2}, /* output XVS, HVS */ + + {0x306B, 0x05}, + {0x30E2, 0x04}, /* mode setting */ + + {0x30EE, 0x01}, + {0x3342, 0x0A}, + {0x3343, 0x00}, + {0x3344, 0x16}, + {0x3345, 0x00}, + {0x33A6, 0x01}, + {0x3528, 0x0E}, + {0x3554, 0x1F}, + {0x3555, 0x01}, + {0x3556, 0x01}, + {0x3557, 0x01}, + {0x3558, 0x01}, + {0x3559, 0x00}, + {0x355A, 0x00}, + {0x35BA, 0x0E}, + {0x366A, 0x1B}, + {0x366B, 0x1A}, + {0x366C, 0x19}, + {0x366D, 0x17}, + {0x3A41, 0x04}, + + {IMX274_TABLE_END, 0x00} +}; + +/* * imx274 first step register configuration for * starting stream */ @@ -445,7 +491,8 @@ static const struct reg_8 imx274_tp_regs[] = { static const struct imx274_mode imx274_modes[] = { { /* mode 1, 4K */ - .bin_ratio = 1, + .wbin_ratio = 1, /* 3840 */ + .hbin_ratio = 1, /* 2160 */ .init_regs = imx274_mode1_3840x2160_raw10, .min_frame_len = 4550, .min_SHR = 12, @@ -454,7 +501,8 @@ static const struct imx274_mode imx274_modes[] = { }, { /* mode 3, 1080p */ - .bin_ratio = 2, + .wbin_ratio = 2, /* 1920 */ + .hbin_ratio = 2, /* 1080 */ .init_regs = imx274_mode3_1920x1080_raw10, .min_frame_len = 2310, .min_SHR = 8, @@ -463,13 +511,24 @@ static const struct imx274_mode imx274_modes[] = { }, { /* mode 5, 720p */ - .bin_ratio = 3, + .wbin_ratio = 3, /* 1280 */ + .hbin_ratio = 3, /* 720 */ .init_regs = imx274_mode5_1280x720_raw10, .min_frame_len = 2310, .min_SHR = 8, .max_fps = 120, .nocpiop = 112, }, + { + /* mode 6, 540p */ + .wbin_ratio = 3, /* 1280 */ + .hbin_ratio = 4, /* 540 */ + .init_regs = imx274_mode6_1280x540_raw10, + .min_frame_len = 2310, + .min_SHR = 4, + .max_fps = 120, + .nocpiop = 112, + }, }; /* @@ -501,6 +560,8 @@ struct imx274_ctrls { * @frame_rate: V4L2 frame rate structure * @regmap: Pointer to regmap structure * @reset_gpio: Pointer to reset gpio + * @supplies: List of analog and digital supply regulators + * @inck: Pointer to sensor input clock * @lock: Mutex structure * @mode: Parameters for the selected readout mode */ @@ -514,6 +575,8 @@ struct stimx274 { struct v4l2_fract frame_interval; struct regmap *regmap; struct gpio_desc *reset_gpio; + struct regulator_bulk_data supplies[IMX274_NUM_SUPPLIES]; + struct clk *inck; struct mutex lock; /* mutex lock for operations */ const struct imx274_mode *mode; }; @@ -726,6 +789,12 @@ static int imx274_start_stream(struct stimx274 *priv) { int err = 0; + err = __v4l2_ctrl_handler_setup(&priv->ctrls.handler); + if (err) { + dev_err(&priv->client->dev, "Error %d setup controls\n", err); + return err; + } + /* * Refer to "Standby Cancel Sequence when using CSI-2" in * imx274 datasheet, it should wait 10ms or more here. @@ -767,6 +836,66 @@ static void imx274_reset(struct stimx274 *priv, int rst) usleep_range(IMX274_RESET_DELAY1, IMX274_RESET_DELAY2); } +static int imx274_power_on(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct stimx274 *imx274 = to_imx274(sd); + int ret; + + /* keep sensor in reset before power on */ + imx274_reset(imx274, 0); + + ret = clk_prepare_enable(imx274->inck); + if (ret) { + dev_err(&imx274->client->dev, + "Failed to enable input clock: %d\n", ret); + return ret; + } + + ret = regulator_bulk_enable(IMX274_NUM_SUPPLIES, imx274->supplies); + if (ret) { + dev_err(&imx274->client->dev, + "Failed to enable regulators: %d\n", ret); + goto fail_reg; + } + + udelay(2); + imx274_reset(imx274, 1); + + return 0; + +fail_reg: + clk_disable_unprepare(imx274->inck); + return ret; +} + +static int imx274_power_off(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct stimx274 *imx274 = to_imx274(sd); + + imx274_reset(imx274, 0); + + regulator_bulk_disable(IMX274_NUM_SUPPLIES, imx274->supplies); + + clk_disable_unprepare(imx274->inck); + + return 0; +} + +static int imx274_regulators_get(struct device *dev, struct stimx274 *imx274) +{ + unsigned int i; + + for (i = 0; i < IMX274_NUM_SUPPLIES; i++) + imx274->supplies[i].supply = imx274_supply_names[i]; + + return devm_regulator_bulk_get(dev, IMX274_NUM_SUPPLIES, + imx274->supplies); +} + /** * imx274_s_ctrl - This is used to set the imx274 V4L2 controls * @ctrl: V4L2 control to be set @@ -781,6 +910,9 @@ static int imx274_s_ctrl(struct v4l2_ctrl *ctrl) struct stimx274 *imx274 = to_imx274(sd); int ret = -EINVAL; + if (!pm_runtime_get_if_in_use(&imx274->client->dev)) + return 0; + dev_dbg(&imx274->client->dev, "%s : s_ctrl: %s, value: %d\n", __func__, ctrl->name, ctrl->val); @@ -811,6 +943,8 @@ static int imx274_s_ctrl(struct v4l2_ctrl *ctrl) break; } + pm_runtime_put(&imx274->client->dev); + return ret; } @@ -892,12 +1026,13 @@ static int __imx274_change_compose(struct stimx274 *imx274, } for (i = 0; i < ARRAY_SIZE(imx274_modes); i++) { - unsigned int ratio = imx274_modes[i].bin_ratio; + u8 wratio = imx274_modes[i].wbin_ratio; + u8 hratio = imx274_modes[i].hbin_ratio; int goodness = imx274_binning_goodness( imx274, - cur_crop->width / ratio, *width, - cur_crop->height / ratio, *height, + cur_crop->width / wratio, *width, + cur_crop->height / hratio, *height, flags); if (goodness >= best_goodness) { @@ -906,14 +1041,14 @@ static int __imx274_change_compose(struct stimx274 *imx274, } } - *width = cur_crop->width / best_mode->bin_ratio; - *height = cur_crop->height / best_mode->bin_ratio; + *width = cur_crop->width / best_mode->wbin_ratio; + *height = cur_crop->height / best_mode->hbin_ratio; if (which == V4L2_SUBDEV_FORMAT_ACTIVE) imx274->mode = best_mode; - dev_dbg(dev, "%s: selected %u:1 binning\n", - __func__, best_mode->bin_ratio); + dev_dbg(dev, "%s: selected %ux%u binning\n", + __func__, best_mode->wbin_ratio, best_mode->hbin_ratio); tgt_fmt->width = *width; tgt_fmt->height = *height; @@ -1163,7 +1298,7 @@ static int imx274_apply_trimming(struct stimx274 *imx274) (-imx274->crop.top / 2) : (imx274->crop.top / 2); v_cut = (IMX274_MAX_HEIGHT - imx274->crop.height) / 2; write_v_size = imx274->crop.height + 22; - y_out_size = imx274->crop.height + 14; + y_out_size = imx274->crop.height; err = imx274_write_mbreg(imx274, IMX274_HMAX_REG_LSB, hmax, 2); if (!err) @@ -1271,10 +1406,8 @@ unlock: * * Return: 0 on success, errors otherwise */ -static int imx274_load_default(struct stimx274 *priv) +static void imx274_load_default(struct stimx274 *priv) { - int ret; - /* load default control values */ priv->frame_interval.numerator = 1; priv->frame_interval.denominator = IMX274_DEF_FRAME_RATE; @@ -1282,29 +1415,6 @@ static int imx274_load_default(struct stimx274 *priv) priv->ctrls.gain->val = IMX274_DEF_GAIN; priv->ctrls.vflip->val = 0; priv->ctrls.test_pattern->val = TEST_PATTERN_DISABLED; - - /* update frame rate */ - ret = imx274_set_frame_interval(priv, - priv->frame_interval); - if (ret) - return ret; - - /* update exposure time */ - ret = v4l2_ctrl_s_ctrl(priv->ctrls.exposure, priv->ctrls.exposure->val); - if (ret) - return ret; - - /* update gain */ - ret = v4l2_ctrl_s_ctrl(priv->ctrls.gain, priv->ctrls.gain->val); - if (ret) - return ret; - - /* update vflip */ - ret = v4l2_ctrl_s_ctrl(priv->ctrls.vflip, priv->ctrls.vflip->val); - if (ret) - return ret; - - return 0; } /** @@ -1329,6 +1439,13 @@ static int imx274_s_stream(struct v4l2_subdev *sd, int on) mutex_lock(&imx274->lock); if (on) { + ret = pm_runtime_get_sync(&imx274->client->dev); + if (ret < 0) { + pm_runtime_put_noidle(&imx274->client->dev); + mutex_unlock(&imx274->lock); + return ret; + } + /* load mode registers */ ret = imx274_mode_regs(imx274); if (ret) @@ -1349,12 +1466,6 @@ static int imx274_s_stream(struct v4l2_subdev *sd, int on) if (ret) goto fail; - /* update exposure time */ - ret = __v4l2_ctrl_s_ctrl(imx274->ctrls.exposure, - imx274->ctrls.exposure->val); - if (ret) - goto fail; - /* start stream */ ret = imx274_start_stream(imx274); if (ret) @@ -1364,6 +1475,8 @@ static int imx274_s_stream(struct v4l2_subdev *sd, int on) ret = imx274_write_table(imx274, imx274_stop); if (ret) goto fail; + + pm_runtime_put(&imx274->client->dev); } mutex_unlock(&imx274->lock); @@ -1371,6 +1484,7 @@ static int imx274_s_stream(struct v4l2_subdev *sd, int on) return 0; fail: + pm_runtime_put(&imx274->client->dev); mutex_unlock(&imx274->lock); dev_err(&imx274->client->dev, "s_stream failed\n"); return ret; @@ -1836,12 +1950,23 @@ static int imx274_probe(struct i2c_client *client) mutex_init(&imx274->lock); + imx274->inck = devm_clk_get_optional(&client->dev, "inck"); + if (IS_ERR(imx274->inck)) + return PTR_ERR(imx274->inck); + + ret = imx274_regulators_get(&client->dev, imx274); + if (ret) { + dev_err(&client->dev, + "Failed to get power regulators, err: %d\n", ret); + return ret; + } + /* initialize format */ - imx274->mode = &imx274_modes[IMX274_DEFAULT_BINNING]; + imx274->mode = &imx274_modes[0]; imx274->crop.width = IMX274_MAX_WIDTH; imx274->crop.height = IMX274_MAX_HEIGHT; - imx274->format.width = imx274->crop.width / imx274->mode->bin_ratio; - imx274->format.height = imx274->crop.height / imx274->mode->bin_ratio; + imx274->format.width = imx274->crop.width / imx274->mode->wbin_ratio; + imx274->format.height = imx274->crop.height / imx274->mode->hbin_ratio; imx274->format.field = V4L2_FIELD_NONE; imx274->format.code = MEDIA_BUS_FMT_SRGGB10_1X10; imx274->format.colorspace = V4L2_COLORSPACE_SRGB; @@ -1883,15 +2008,20 @@ static int imx274_probe(struct i2c_client *client) goto err_me; } - /* pull sensor out of reset */ - imx274_reset(imx274, 1); + /* power on the sensor */ + ret = imx274_power_on(&client->dev); + if (ret < 0) { + dev_err(&client->dev, + "%s : imx274 power on failed\n", __func__); + goto err_me; + } /* initialize controls */ ret = v4l2_ctrl_handler_init(&imx274->ctrls.handler, 4); if (ret < 0) { dev_err(&client->dev, "%s : ctrl handler init Failed\n", __func__); - goto err_me; + goto err_power_off; } imx274->ctrls.handler.lock = &imx274->lock; @@ -1927,22 +2057,8 @@ static int imx274_probe(struct i2c_client *client) goto err_ctrls; } - /* setup default controls */ - ret = v4l2_ctrl_handler_setup(&imx274->ctrls.handler); - if (ret) { - dev_err(&client->dev, - "Error %d setup default controls\n", ret); - goto err_ctrls; - } - /* load default control values */ - ret = imx274_load_default(imx274); - if (ret) { - dev_err(&client->dev, - "%s : imx274_load_default failed %d\n", - __func__, ret); - goto err_ctrls; - } + imx274_load_default(imx274); /* register subdevice */ ret = v4l2_async_register_subdev(sd); @@ -1953,11 +2069,17 @@ static int imx274_probe(struct i2c_client *client) goto err_ctrls; } + pm_runtime_set_active(&client->dev); + pm_runtime_enable(&client->dev); + pm_runtime_idle(&client->dev); + dev_info(&client->dev, "imx274 : imx274 probe success !\n"); return 0; err_ctrls: v4l2_ctrl_handler_free(&imx274->ctrls.handler); +err_power_off: + imx274_power_off(&client->dev); err_me: media_entity_cleanup(&sd->entity); err_regmap: @@ -1970,19 +2092,27 @@ static int imx274_remove(struct i2c_client *client) struct v4l2_subdev *sd = i2c_get_clientdata(client); struct stimx274 *imx274 = to_imx274(sd); - /* stop stream */ - imx274_write_table(imx274, imx274_stop); + pm_runtime_disable(&client->dev); + if (!pm_runtime_status_suspended(&client->dev)) + imx274_power_off(&client->dev); + pm_runtime_set_suspended(&client->dev); v4l2_async_unregister_subdev(sd); v4l2_ctrl_handler_free(&imx274->ctrls.handler); + media_entity_cleanup(&sd->entity); mutex_destroy(&imx274->lock); return 0; } +static const struct dev_pm_ops imx274_pm_ops = { + SET_RUNTIME_PM_OPS(imx274_power_off, imx274_power_on, NULL) +}; + static struct i2c_driver imx274_i2c_driver = { .driver = { .name = DRIVER_NAME, + .pm = &imx274_pm_ops, .of_match_table = imx274_of_id_table, }, .probe_new = imx274_probe, |