From ab7b50ae406ee918ba68a13133a9cdf89c70fe4f Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Wed, 7 Sep 2011 05:22:39 -0300 Subject: [PATCH] [media] mt9v022: convert to the control framework Signed-off-by: Hans Verkuil [g.liakhovetski@gmx.de: simplified pointer arithmetic] Signed-off-by: Guennadi Liakhovetski Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/mt9v022.c | 265 ++++++++++++++-------------------- 1 file changed, 107 insertions(+), 158 deletions(-) diff --git a/drivers/media/video/mt9v022.c b/drivers/media/video/mt9v022.c index 53149a73874b..7e2aeda21752 100644 --- a/drivers/media/video/mt9v022.c +++ b/drivers/media/video/mt9v022.c @@ -18,6 +18,7 @@ #include #include #include +#include /* * mt9v022 i2c address 0x48, 0x4c, 0x58, 0x5c @@ -101,6 +102,17 @@ 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; @@ -179,6 +191,8 @@ 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; } @@ -431,215 +445,117 @@ 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 = { - .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; } /* @@ -752,9 +668,12 @@ 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, @@ -906,10 +825,39 @@ 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 @@ -922,7 +870,7 @@ static int mt9v022_probe(struct i2c_client *client, ret = mt9v022_video_probe(icd, client); if (ret) { - icd->ops = NULL; + v4l2_ctrl_handler_free(&mt9v022->hdl); kfree(mt9v022); } @@ -934,8 +882,9 @@ static int mt9v022_remove(struct i2c_client *client) struct mt9v022 *mt9v022 = to_mt9v022(client); struct soc_camera_device *icd = client->dev.platform_data; - icd->ops = NULL; + v4l2_device_unregister_subdev(&mt9v022->subdev); mt9v022_video_remove(icd); + v4l2_ctrl_handler_free(&mt9v022->hdl); kfree(mt9v022); return 0; -- 2.39.5