diff options
Diffstat (limited to 'drivers/media/video/mt9v022.c')
-rw-r--r-- | drivers/media/video/mt9v022.c | 448 |
1 files changed, 186 insertions, 262 deletions
diff --git a/drivers/media/video/mt9v022.c b/drivers/media/video/mt9v022.c index 51b0fcc..690ee0d 100644 --- a/drivers/media/video/mt9v022.c +++ b/drivers/media/video/mt9v022.c @@ -13,10 +13,13 @@ #include <linux/i2c.h> #include <linux/delay.h> #include <linux/log2.h> +#include <linux/module.h> +#include <media/soc_camera.h> +#include <media/soc_mediabus.h> #include <media/v4l2-subdev.h> #include <media/v4l2-chip-ident.h> -#include <media/soc_camera.h> +#include <media/v4l2-ctrls.h> /* * mt9v022 i2c address 0x48, 0x4c, 0x58, 0x5c @@ -100,6 +103,17 @@ static const struct mt9v022_datafmt mt9v022_monochrome_fmts[] = { struct mt9v022 { struct v4l2_subdev subdev; + struct v4l2_ctrl_handler hdl; + struct { + /* exposure/auto-exposure cluster */ + struct v4l2_ctrl *autoexposure; + struct v4l2_ctrl *exposure; + }; + struct { + /* gain/auto-gain cluster */ + struct v4l2_ctrl *autogain; + struct v4l2_ctrl *gain; + }; struct v4l2_rect rect; /* Sensor window */ const struct mt9v022_datafmt *fmt; const struct mt9v022_datafmt *fmts; @@ -178,6 +192,8 @@ static int mt9v022_init(struct i2c_client *client) ret = reg_clear(client, MT9V022_BLACK_LEVEL_CALIB_CTRL, 1); if (!ret) ret = reg_write(client, MT9V022_DIGITAL_TEST_PATTERN, 0); + if (!ret) + return v4l2_ctrl_handler_setup(&mt9v022->hdl); return ret; } @@ -199,78 +215,6 @@ static int mt9v022_s_stream(struct v4l2_subdev *sd, int enable) return 0; } -static int mt9v022_set_bus_param(struct soc_camera_device *icd, - unsigned long flags) -{ - struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd)); - struct mt9v022 *mt9v022 = to_mt9v022(client); - struct soc_camera_link *icl = to_soc_camera_link(icd); - unsigned int width_flag = flags & SOCAM_DATAWIDTH_MASK; - int ret; - u16 pixclk = 0; - - /* Only one width bit may be set */ - if (!is_power_of_2(width_flag)) - return -EINVAL; - - if (icl->set_bus_param) { - ret = icl->set_bus_param(icl, width_flag); - if (ret) - return ret; - } else { - /* - * Without board specific bus width settings we only support the - * sensors native bus width - */ - if (width_flag != SOCAM_DATAWIDTH_10) - return -EINVAL; - } - - flags = soc_camera_apply_sensor_flags(icl, flags); - - if (flags & SOCAM_PCLK_SAMPLE_FALLING) - pixclk |= 0x10; - - if (!(flags & SOCAM_HSYNC_ACTIVE_HIGH)) - pixclk |= 0x1; - - if (!(flags & SOCAM_VSYNC_ACTIVE_HIGH)) - pixclk |= 0x2; - - ret = reg_write(client, MT9V022_PIXCLK_FV_LV, pixclk); - if (ret < 0) - return ret; - - if (!(flags & SOCAM_MASTER)) - mt9v022->chip_control &= ~0x8; - - ret = reg_write(client, MT9V022_CHIP_CONTROL, mt9v022->chip_control); - if (ret < 0) - return ret; - - dev_dbg(&client->dev, "Calculated pixclk 0x%x, chip control 0x%x\n", - pixclk, mt9v022->chip_control); - - return 0; -} - -static unsigned long mt9v022_query_bus_param(struct soc_camera_device *icd) -{ - struct soc_camera_link *icl = to_soc_camera_link(icd); - unsigned int flags = SOCAM_MASTER | SOCAM_SLAVE | - SOCAM_PCLK_SAMPLE_RISING | SOCAM_PCLK_SAMPLE_FALLING | - SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_LOW | - SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_LOW | - SOCAM_DATA_ACTIVE_HIGH; - - if (icl->query_bus_param) - flags |= icl->query_bus_param(icl) & SOCAM_DATAWIDTH_MASK; - else - flags |= SOCAM_DATAWIDTH_10; - - return soc_camera_apply_sensor_flags(icl, flags); -} - static int mt9v022_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a) { struct i2c_client *client = v4l2_get_subdevdata(sd); @@ -389,7 +333,7 @@ static int mt9v022_s_fmt(struct v4l2_subdev *sd, /* * The caller provides a supported format, as verified per call to - * icd->try_fmt(), datawidth is from our supported format list + * .try_mbus_fmt(), datawidth is from our supported format list */ switch (mf->code) { case V4L2_MBUS_FMT_Y8_1X8: @@ -502,236 +446,131 @@ static int mt9v022_s_register(struct v4l2_subdev *sd, } #endif -static const struct v4l2_queryctrl mt9v022_controls[] = { - { - .id = V4L2_CID_VFLIP, - .type = V4L2_CTRL_TYPE_BOOLEAN, - .name = "Flip Vertically", - .minimum = 0, - .maximum = 1, - .step = 1, - .default_value = 0, - }, { - .id = V4L2_CID_HFLIP, - .type = V4L2_CTRL_TYPE_BOOLEAN, - .name = "Flip Horizontally", - .minimum = 0, - .maximum = 1, - .step = 1, - .default_value = 0, - }, { - .id = V4L2_CID_GAIN, - .type = V4L2_CTRL_TYPE_INTEGER, - .name = "Analog Gain", - .minimum = 64, - .maximum = 127, - .step = 1, - .default_value = 64, - .flags = V4L2_CTRL_FLAG_SLIDER, - }, { - .id = V4L2_CID_EXPOSURE, - .type = V4L2_CTRL_TYPE_INTEGER, - .name = "Exposure", - .minimum = 1, - .maximum = 255, - .step = 1, - .default_value = 255, - .flags = V4L2_CTRL_FLAG_SLIDER, - }, { - .id = V4L2_CID_AUTOGAIN, - .type = V4L2_CTRL_TYPE_BOOLEAN, - .name = "Automatic Gain", - .minimum = 0, - .maximum = 1, - .step = 1, - .default_value = 1, - }, { - .id = V4L2_CID_EXPOSURE_AUTO, - .type = V4L2_CTRL_TYPE_BOOLEAN, - .name = "Automatic Exposure", - .minimum = 0, - .maximum = 1, - .step = 1, - .default_value = 1, - } -}; - -static struct soc_camera_ops mt9v022_ops = { - .set_bus_param = mt9v022_set_bus_param, - .query_bus_param = mt9v022_query_bus_param, - .controls = mt9v022_controls, - .num_controls = ARRAY_SIZE(mt9v022_controls), -}; - -static int mt9v022_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) +static int mt9v022_g_volatile_ctrl(struct v4l2_ctrl *ctrl) { + struct mt9v022 *mt9v022 = container_of(ctrl->handler, + struct mt9v022, hdl); + struct v4l2_subdev *sd = &mt9v022->subdev; struct i2c_client *client = v4l2_get_subdevdata(sd); - const struct v4l2_queryctrl *qctrl; + struct v4l2_ctrl *gain = mt9v022->gain; + struct v4l2_ctrl *exp = mt9v022->exposure; unsigned long range; int data; - qctrl = soc_camera_find_qctrl(&mt9v022_ops, ctrl->id); - switch (ctrl->id) { - case V4L2_CID_VFLIP: - data = reg_read(client, MT9V022_READ_MODE); - if (data < 0) - return -EIO; - ctrl->value = !!(data & 0x10); - break; - case V4L2_CID_HFLIP: - data = reg_read(client, MT9V022_READ_MODE); - if (data < 0) - return -EIO; - ctrl->value = !!(data & 0x20); - break; - case V4L2_CID_EXPOSURE_AUTO: - data = reg_read(client, MT9V022_AEC_AGC_ENABLE); - if (data < 0) - return -EIO; - ctrl->value = !!(data & 0x1); - break; case V4L2_CID_AUTOGAIN: - data = reg_read(client, MT9V022_AEC_AGC_ENABLE); - if (data < 0) - return -EIO; - ctrl->value = !!(data & 0x2); - break; - case V4L2_CID_GAIN: data = reg_read(client, MT9V022_ANALOG_GAIN); if (data < 0) return -EIO; - range = qctrl->maximum - qctrl->minimum; - ctrl->value = ((data - 16) * range + 24) / 48 + qctrl->minimum; - - break; - case V4L2_CID_EXPOSURE: + range = gain->maximum - gain->minimum; + gain->val = ((data - 16) * range + 24) / 48 + gain->minimum; + return 0; + case V4L2_CID_EXPOSURE_AUTO: data = reg_read(client, MT9V022_TOTAL_SHUTTER_WIDTH); if (data < 0) return -EIO; - range = qctrl->maximum - qctrl->minimum; - ctrl->value = ((data - 1) * range + 239) / 479 + qctrl->minimum; - - break; + range = exp->maximum - exp->minimum; + exp->val = ((data - 1) * range + 239) / 479 + exp->minimum; + return 0; } - return 0; + return -EINVAL; } -static int mt9v022_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) +static int mt9v022_s_ctrl(struct v4l2_ctrl *ctrl) { - int data; + struct mt9v022 *mt9v022 = container_of(ctrl->handler, + struct mt9v022, hdl); + struct v4l2_subdev *sd = &mt9v022->subdev; struct i2c_client *client = v4l2_get_subdevdata(sd); - const struct v4l2_queryctrl *qctrl; - - qctrl = soc_camera_find_qctrl(&mt9v022_ops, ctrl->id); - if (!qctrl) - return -EINVAL; + int data; switch (ctrl->id) { case V4L2_CID_VFLIP: - if (ctrl->value) + if (ctrl->val) data = reg_set(client, MT9V022_READ_MODE, 0x10); else data = reg_clear(client, MT9V022_READ_MODE, 0x10); if (data < 0) return -EIO; - break; + return 0; case V4L2_CID_HFLIP: - if (ctrl->value) + if (ctrl->val) data = reg_set(client, MT9V022_READ_MODE, 0x20); else data = reg_clear(client, MT9V022_READ_MODE, 0x20); if (data < 0) return -EIO; - break; - case V4L2_CID_GAIN: - /* mt9v022 has minimum == default */ - if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum) - return -EINVAL; - else { - unsigned long range = qctrl->maximum - qctrl->minimum; + return 0; + case V4L2_CID_AUTOGAIN: + if (ctrl->val) { + if (reg_set(client, MT9V022_AEC_AGC_ENABLE, 0x2) < 0) + return -EIO; + } else { + struct v4l2_ctrl *gain = mt9v022->gain; + /* mt9v022 has minimum == default */ + unsigned long range = gain->maximum - gain->minimum; /* Valid values 16 to 64, 32 to 64 must be even. */ - unsigned long gain = ((ctrl->value - qctrl->minimum) * + unsigned long gain_val = ((gain->val - gain->minimum) * 48 + range / 2) / range + 16; - if (gain >= 32) - gain &= ~1; + + if (gain_val >= 32) + gain_val &= ~1; + /* * The user wants to set gain manually, hope, she * knows, what she's doing... Switch AGC off. */ - if (reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x2) < 0) return -EIO; dev_dbg(&client->dev, "Setting gain from %d to %lu\n", - reg_read(client, MT9V022_ANALOG_GAIN), gain); - if (reg_write(client, MT9V022_ANALOG_GAIN, gain) < 0) + reg_read(client, MT9V022_ANALOG_GAIN), gain_val); + if (reg_write(client, MT9V022_ANALOG_GAIN, gain_val) < 0) return -EIO; } - break; - case V4L2_CID_EXPOSURE: - /* mt9v022 has maximum == default */ - if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum) - return -EINVAL; - else { - unsigned long range = qctrl->maximum - qctrl->minimum; - unsigned long shutter = ((ctrl->value - qctrl->minimum) * - 479 + range / 2) / range + 1; + return 0; + case V4L2_CID_EXPOSURE_AUTO: + if (ctrl->val == V4L2_EXPOSURE_AUTO) { + data = reg_set(client, MT9V022_AEC_AGC_ENABLE, 0x1); + } else { + struct v4l2_ctrl *exp = mt9v022->exposure; + unsigned long range = exp->maximum - exp->minimum; + unsigned long shutter = ((exp->val - exp->minimum) * + 479 + range / 2) / range + 1; + /* * The user wants to set shutter width manually, hope, * she knows, what she's doing... Switch AEC off. */ - - if (reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x1) < 0) + data = reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x1); + if (data < 0) return -EIO; - dev_dbg(&client->dev, "Shutter width from %d to %lu\n", - reg_read(client, MT9V022_TOTAL_SHUTTER_WIDTH), - shutter); + reg_read(client, MT9V022_TOTAL_SHUTTER_WIDTH), + shutter); if (reg_write(client, MT9V022_TOTAL_SHUTTER_WIDTH, - shutter) < 0) + shutter) < 0) return -EIO; } - break; - case V4L2_CID_AUTOGAIN: - if (ctrl->value) - data = reg_set(client, MT9V022_AEC_AGC_ENABLE, 0x2); - else - data = reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x2); - if (data < 0) - return -EIO; - break; - case V4L2_CID_EXPOSURE_AUTO: - if (ctrl->value) - data = reg_set(client, MT9V022_AEC_AGC_ENABLE, 0x1); - else - data = reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x1); - if (data < 0) - return -EIO; - break; + return 0; } - return 0; + return -EINVAL; } /* * Interface active, can use i2c. If it fails, it can indeed mean, that * this wasn't our capture interface, so, we wait for the right one */ -static int mt9v022_video_probe(struct soc_camera_device *icd, - struct i2c_client *client) +static int mt9v022_video_probe(struct i2c_client *client) { struct mt9v022 *mt9v022 = to_mt9v022(client); - struct soc_camera_link *icl = to_soc_camera_link(icd); + struct soc_camera_link *icl = soc_camera_i2c_to_link(client); s32 data; int ret; unsigned long flags; - /* We must have a parent by now. And it cannot be a wrong one. */ - BUG_ON(!icd->parent || - to_soc_camera_host(icd->parent)->nr != icd->iface); - /* Read out the chip version register */ data = reg_read(client, MT9V022_CHIP_VERSION); @@ -805,16 +644,6 @@ ei2c: return ret; } -static void mt9v022_video_remove(struct soc_camera_device *icd) -{ - struct soc_camera_link *icl = to_soc_camera_link(icd); - - dev_dbg(icd->pdev, "Video removed: %p, %p\n", - icd->parent, icd->vdev); - if (icl->free_bus) - icl->free_bus(icl); -} - static int mt9v022_g_skip_top_lines(struct v4l2_subdev *sd, u32 *lines) { struct i2c_client *client = v4l2_get_subdevdata(sd); @@ -825,9 +654,12 @@ static int mt9v022_g_skip_top_lines(struct v4l2_subdev *sd, u32 *lines) return 0; } +static const struct v4l2_ctrl_ops mt9v022_ctrl_ops = { + .g_volatile_ctrl = mt9v022_g_volatile_ctrl, + .s_ctrl = mt9v022_s_ctrl, +}; + static struct v4l2_subdev_core_ops mt9v022_subdev_core_ops = { - .g_ctrl = mt9v022_g_ctrl, - .s_ctrl = mt9v022_s_ctrl, .g_chip_ident = mt9v022_g_chip_ident, #ifdef CONFIG_VIDEO_ADV_DEBUG .g_register = mt9v022_g_register, @@ -848,6 +680,72 @@ static int mt9v022_enum_fmt(struct v4l2_subdev *sd, unsigned int index, return 0; } +static int mt9v022_g_mbus_config(struct v4l2_subdev *sd, + struct v4l2_mbus_config *cfg) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct soc_camera_link *icl = soc_camera_i2c_to_link(client); + + cfg->flags = V4L2_MBUS_MASTER | V4L2_MBUS_SLAVE | + V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_PCLK_SAMPLE_FALLING | + V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_HSYNC_ACTIVE_LOW | + V4L2_MBUS_VSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_LOW | + V4L2_MBUS_DATA_ACTIVE_HIGH; + cfg->type = V4L2_MBUS_PARALLEL; + cfg->flags = soc_camera_apply_board_flags(icl, cfg); + + return 0; +} + +static int mt9v022_s_mbus_config(struct v4l2_subdev *sd, + const struct v4l2_mbus_config *cfg) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct soc_camera_link *icl = soc_camera_i2c_to_link(client); + struct mt9v022 *mt9v022 = to_mt9v022(client); + unsigned long flags = soc_camera_apply_board_flags(icl, cfg); + unsigned int bps = soc_mbus_get_fmtdesc(mt9v022->fmt->code)->bits_per_sample; + int ret; + u16 pixclk = 0; + + if (icl->set_bus_param) { + ret = icl->set_bus_param(icl, 1 << (bps - 1)); + if (ret) + return ret; + } else if (bps != 10) { + /* + * Without board specific bus width settings we only support the + * sensors native bus width + */ + return -EINVAL; + } + + if (flags & V4L2_MBUS_PCLK_SAMPLE_FALLING) + pixclk |= 0x10; + + if (!(flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)) + pixclk |= 0x1; + + if (!(flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH)) + pixclk |= 0x2; + + ret = reg_write(client, MT9V022_PIXCLK_FV_LV, pixclk); + if (ret < 0) + return ret; + + if (!(flags & V4L2_MBUS_MASTER)) + mt9v022->chip_control &= ~0x8; + + ret = reg_write(client, MT9V022_CHIP_CONTROL, mt9v022->chip_control); + if (ret < 0) + return ret; + + dev_dbg(&client->dev, "Calculated pixclk 0x%x, chip control 0x%x\n", + pixclk, mt9v022->chip_control); + + return 0; +} + static struct v4l2_subdev_video_ops mt9v022_subdev_video_ops = { .s_stream = mt9v022_s_stream, .s_mbus_fmt = mt9v022_s_fmt, @@ -857,6 +755,8 @@ static struct v4l2_subdev_video_ops mt9v022_subdev_video_ops = { .g_crop = mt9v022_g_crop, .cropcap = mt9v022_cropcap, .enum_mbus_fmt = mt9v022_enum_fmt, + .g_mbus_config = mt9v022_g_mbus_config, + .s_mbus_config = mt9v022_s_mbus_config, }; static struct v4l2_subdev_sensor_ops mt9v022_subdev_sensor_ops = { @@ -873,17 +773,10 @@ static int mt9v022_probe(struct i2c_client *client, const struct i2c_device_id *did) { struct mt9v022 *mt9v022; - struct soc_camera_device *icd = client->dev.platform_data; + struct soc_camera_link *icl = soc_camera_i2c_to_link(client); struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); - struct soc_camera_link *icl; int ret; - if (!icd) { - dev_err(&client->dev, "MT9V022: missing soc-camera data!\n"); - return -EINVAL; - } - - icl = to_soc_camera_link(icd); if (!icl) { dev_err(&client->dev, "MT9V022 driver needs platform data\n"); return -EINVAL; @@ -900,10 +793,39 @@ static int mt9v022_probe(struct i2c_client *client, return -ENOMEM; v4l2_i2c_subdev_init(&mt9v022->subdev, client, &mt9v022_subdev_ops); + v4l2_ctrl_handler_init(&mt9v022->hdl, 6); + v4l2_ctrl_new_std(&mt9v022->hdl, &mt9v022_ctrl_ops, + V4L2_CID_VFLIP, 0, 1, 1, 0); + v4l2_ctrl_new_std(&mt9v022->hdl, &mt9v022_ctrl_ops, + V4L2_CID_HFLIP, 0, 1, 1, 0); + mt9v022->autogain = v4l2_ctrl_new_std(&mt9v022->hdl, &mt9v022_ctrl_ops, + V4L2_CID_AUTOGAIN, 0, 1, 1, 1); + mt9v022->gain = v4l2_ctrl_new_std(&mt9v022->hdl, &mt9v022_ctrl_ops, + V4L2_CID_GAIN, 0, 127, 1, 64); + + /* + * Simulated autoexposure. If enabled, we calculate shutter width + * ourselves in the driver based on vertical blanking and frame width + */ + mt9v022->autoexposure = v4l2_ctrl_new_std_menu(&mt9v022->hdl, + &mt9v022_ctrl_ops, V4L2_CID_EXPOSURE_AUTO, 1, 0, + V4L2_EXPOSURE_AUTO); + mt9v022->exposure = v4l2_ctrl_new_std(&mt9v022->hdl, &mt9v022_ctrl_ops, + V4L2_CID_EXPOSURE, 1, 255, 1, 255); + + mt9v022->subdev.ctrl_handler = &mt9v022->hdl; + if (mt9v022->hdl.error) { + int err = mt9v022->hdl.error; + + kfree(mt9v022); + return err; + } + v4l2_ctrl_auto_cluster(2, &mt9v022->autoexposure, + V4L2_EXPOSURE_MANUAL, true); + v4l2_ctrl_auto_cluster(2, &mt9v022->autogain, 0, true); mt9v022->chip_control = MT9V022_CHIP_CONTROL_DEFAULT; - icd->ops = &mt9v022_ops; /* * MT9V022 _really_ corrupts the first read out line. * TODO: verify on i.MX31 @@ -914,9 +836,9 @@ static int mt9v022_probe(struct i2c_client *client, mt9v022->rect.width = MT9V022_MAX_WIDTH; mt9v022->rect.height = MT9V022_MAX_HEIGHT; - ret = mt9v022_video_probe(icd, client); + ret = mt9v022_video_probe(client); if (ret) { - icd->ops = NULL; + v4l2_ctrl_handler_free(&mt9v022->hdl); kfree(mt9v022); } @@ -926,10 +848,12 @@ static int mt9v022_probe(struct i2c_client *client, static int mt9v022_remove(struct i2c_client *client) { struct mt9v022 *mt9v022 = to_mt9v022(client); - struct soc_camera_device *icd = client->dev.platform_data; + struct soc_camera_link *icl = soc_camera_i2c_to_link(client); - icd->ops = NULL; - mt9v022_video_remove(icd); + v4l2_device_unregister_subdev(&mt9v022->subdev); + if (icl->free_bus) + icl->free_bus(icl); + v4l2_ctrl_handler_free(&mt9v022->hdl); kfree(mt9v022); return 0; |