From 9538e1c226f1fd665126869f542170a2e90f2039 Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Fri, 24 Apr 2009 12:57:01 -0300 Subject: V4L/DVB (11610): soc-camera: simplify register access routines in multiple sensor drivers Register access routines only need the I2C client, not the soc-camera device context. Signed-off-by: Guennadi Liakhovetski Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/mt9v022.c | 135 ++++++++++++++++++++++-------------------- 1 file changed, 70 insertions(+), 65 deletions(-) (limited to 'drivers/media/video/mt9v022.c') diff --git a/drivers/media/video/mt9v022.c b/drivers/media/video/mt9v022.c index 412b399baca..be20d312b1d 100644 --- a/drivers/media/video/mt9v022.c +++ b/drivers/media/video/mt9v022.c @@ -91,51 +91,49 @@ struct mt9v022 { u16 chip_control; }; -static int reg_read(struct soc_camera_device *icd, const u8 reg) +static int reg_read(struct i2c_client *client, const u8 reg) { - struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); - struct i2c_client *client = mt9v022->client; s32 data = i2c_smbus_read_word_data(client, reg); return data < 0 ? data : swab16(data); } -static int reg_write(struct soc_camera_device *icd, const u8 reg, +static int reg_write(struct i2c_client *client, const u8 reg, const u16 data) { - struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); - return i2c_smbus_write_word_data(mt9v022->client, reg, swab16(data)); + return i2c_smbus_write_word_data(client, reg, swab16(data)); } -static int reg_set(struct soc_camera_device *icd, const u8 reg, +static int reg_set(struct i2c_client *client, const u8 reg, const u16 data) { int ret; - ret = reg_read(icd, reg); + ret = reg_read(client, reg); if (ret < 0) return ret; - return reg_write(icd, reg, ret | data); + return reg_write(client, reg, ret | data); } -static int reg_clear(struct soc_camera_device *icd, const u8 reg, +static int reg_clear(struct i2c_client *client, const u8 reg, const u16 data) { int ret; - ret = reg_read(icd, reg); + ret = reg_read(client, reg); if (ret < 0) return ret; - return reg_write(icd, reg, ret & ~data); + return reg_write(client, reg, ret & ~data); } static int mt9v022_init(struct soc_camera_device *icd) { + struct i2c_client *client = to_i2c_client(icd->control); struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); - struct soc_camera_link *icl = mt9v022->client->dev.platform_data; + struct soc_camera_link *icl = client->dev.platform_data; int ret; if (icl->power) { - ret = icl->power(&mt9v022->client->dev, 1); + ret = icl->power(&client->dev, 1); if (ret < 0) { dev_err(icd->vdev->parent, "Platform failed to power-on the camera.\n"); @@ -148,27 +146,27 @@ static int mt9v022_init(struct soc_camera_device *icd) * if available. Soft reset is done in video_probe(). */ if (icl->reset) - icl->reset(&mt9v022->client->dev); + icl->reset(&client->dev); /* Almost the default mode: master, parallel, simultaneous, and an * undocumented bit 0x200, which is present in table 7, but not in 8, * plus snapshot mode to disable scan for now */ mt9v022->chip_control |= 0x10; - ret = reg_write(icd, MT9V022_CHIP_CONTROL, mt9v022->chip_control); + ret = reg_write(client, MT9V022_CHIP_CONTROL, mt9v022->chip_control); if (!ret) - ret = reg_write(icd, MT9V022_READ_MODE, 0x300); + ret = reg_write(client, MT9V022_READ_MODE, 0x300); /* All defaults */ if (!ret) /* AEC, AGC on */ - ret = reg_set(icd, MT9V022_AEC_AGC_ENABLE, 0x3); + ret = reg_set(client, MT9V022_AEC_AGC_ENABLE, 0x3); if (!ret) - ret = reg_write(icd, MT9V022_MAX_TOTAL_SHUTTER_WIDTH, 480); + ret = reg_write(client, MT9V022_MAX_TOTAL_SHUTTER_WIDTH, 480); if (!ret) /* default - auto */ - ret = reg_clear(icd, MT9V022_BLACK_LEVEL_CALIB_CTRL, 1); + ret = reg_clear(client, MT9V022_BLACK_LEVEL_CALIB_CTRL, 1); if (!ret) - ret = reg_write(icd, MT9V022_DIGITAL_TEST_PATTERN, 0); + ret = reg_write(client, MT9V022_DIGITAL_TEST_PATTERN, 0); return ret; } @@ -186,10 +184,11 @@ static int mt9v022_release(struct soc_camera_device *icd) static int mt9v022_start_capture(struct soc_camera_device *icd) { + struct i2c_client *client = to_i2c_client(icd->control); struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); /* Switch to master "normal" mode */ mt9v022->chip_control &= ~0x10; - if (reg_write(icd, MT9V022_CHIP_CONTROL, + if (reg_write(client, MT9V022_CHIP_CONTROL, mt9v022->chip_control) < 0) return -EIO; return 0; @@ -197,10 +196,11 @@ static int mt9v022_start_capture(struct soc_camera_device *icd) static int mt9v022_stop_capture(struct soc_camera_device *icd) { + struct i2c_client *client = to_i2c_client(icd->control); struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); /* Switch to snapshot mode */ mt9v022->chip_control |= 0x10; - if (reg_write(icd, MT9V022_CHIP_CONTROL, + if (reg_write(client, MT9V022_CHIP_CONTROL, mt9v022->chip_control) < 0) return -EIO; return 0; @@ -209,8 +209,9 @@ static int mt9v022_stop_capture(struct soc_camera_device *icd) static int mt9v022_set_bus_param(struct soc_camera_device *icd, unsigned long flags) { + struct i2c_client *client = to_i2c_client(icd->control); struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); - struct soc_camera_link *icl = mt9v022->client->dev.platform_data; + struct soc_camera_link *icl = client->dev.platform_data; unsigned int width_flag = flags & SOCAM_DATAWIDTH_MASK; int ret; u16 pixclk = 0; @@ -243,14 +244,14 @@ static int mt9v022_set_bus_param(struct soc_camera_device *icd, if (!(flags & SOCAM_VSYNC_ACTIVE_HIGH)) pixclk |= 0x2; - ret = reg_write(icd, MT9V022_PIXCLK_FV_LV, pixclk); + 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(icd, MT9V022_CHIP_CONTROL, mt9v022->chip_control); + ret = reg_write(client, MT9V022_CHIP_CONTROL, mt9v022->chip_control); if (ret < 0) return ret; @@ -282,35 +283,36 @@ static unsigned long mt9v022_query_bus_param(struct soc_camera_device *icd) static int mt9v022_set_crop(struct soc_camera_device *icd, struct v4l2_rect *rect) { + struct i2c_client *client = to_i2c_client(icd->control); int ret; /* Like in example app. Contradicts the datasheet though */ - ret = reg_read(icd, MT9V022_AEC_AGC_ENABLE); + ret = reg_read(client, MT9V022_AEC_AGC_ENABLE); if (ret >= 0) { if (ret & 1) /* Autoexposure */ - ret = reg_write(icd, MT9V022_MAX_TOTAL_SHUTTER_WIDTH, + ret = reg_write(client, MT9V022_MAX_TOTAL_SHUTTER_WIDTH, rect->height + icd->y_skip_top + 43); else - ret = reg_write(icd, MT9V022_TOTAL_SHUTTER_WIDTH, + ret = reg_write(client, MT9V022_TOTAL_SHUTTER_WIDTH, rect->height + icd->y_skip_top + 43); } /* Setup frame format: defaults apart from width and height */ if (!ret) - ret = reg_write(icd, MT9V022_COLUMN_START, rect->left); + ret = reg_write(client, MT9V022_COLUMN_START, rect->left); if (!ret) - ret = reg_write(icd, MT9V022_ROW_START, rect->top); + ret = reg_write(client, MT9V022_ROW_START, rect->top); if (!ret) /* Default 94, Phytec driver says: * "width + horizontal blank >= 660" */ - ret = reg_write(icd, MT9V022_HORIZONTAL_BLANKING, + ret = reg_write(client, MT9V022_HORIZONTAL_BLANKING, rect->width > 660 - 43 ? 43 : 660 - rect->width); if (!ret) - ret = reg_write(icd, MT9V022_VERTICAL_BLANKING, 45); + ret = reg_write(client, MT9V022_VERTICAL_BLANKING, 45); if (!ret) - ret = reg_write(icd, MT9V022_WINDOW_WIDTH, rect->width); + ret = reg_write(client, MT9V022_WINDOW_WIDTH, rect->width); if (!ret) - ret = reg_write(icd, MT9V022_WINDOW_HEIGHT, + ret = reg_write(client, MT9V022_WINDOW_HEIGHT, rect->height + icd->y_skip_top); if (ret < 0) @@ -396,16 +398,16 @@ static int mt9v022_get_chip_id(struct soc_camera_device *icd, static int mt9v022_get_register(struct soc_camera_device *icd, struct v4l2_dbg_register *reg) { - struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); + struct i2c_client *client = to_i2c_client(icd->control); if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff) return -EINVAL; - if (reg->match.addr != mt9v022->client->addr) + if (reg->match.addr != client->addr) return -ENODEV; reg->size = 2; - reg->val = reg_read(icd, reg->reg); + reg->val = reg_read(client, reg->reg); if (reg->val > 0xffff) return -EIO; @@ -416,15 +418,15 @@ static int mt9v022_get_register(struct soc_camera_device *icd, static int mt9v022_set_register(struct soc_camera_device *icd, struct v4l2_dbg_register *reg) { - struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); + struct i2c_client *client = to_i2c_client(icd->control); if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff) return -EINVAL; - if (reg->match.addr != mt9v022->client->addr) + if (reg->match.addr != client->addr) return -ENODEV; - if (reg_write(icd, reg->reg, reg->val) < 0) + if (reg_write(client, reg->reg, reg->val) < 0) return -EIO; return 0; @@ -517,29 +519,30 @@ static struct soc_camera_ops mt9v022_ops = { static int mt9v022_get_control(struct soc_camera_device *icd, struct v4l2_control *ctrl) { + struct i2c_client *client = to_i2c_client(icd->control); int data; switch (ctrl->id) { case V4L2_CID_VFLIP: - data = reg_read(icd, MT9V022_READ_MODE); + data = reg_read(client, MT9V022_READ_MODE); if (data < 0) return -EIO; ctrl->value = !!(data & 0x10); break; case V4L2_CID_HFLIP: - data = reg_read(icd, MT9V022_READ_MODE); + 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(icd, MT9V022_AEC_AGC_ENABLE); + 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(icd, MT9V022_AEC_AGC_ENABLE); + data = reg_read(client, MT9V022_AEC_AGC_ENABLE); if (data < 0) return -EIO; ctrl->value = !!(data & 0x2); @@ -552,6 +555,7 @@ static int mt9v022_set_control(struct soc_camera_device *icd, struct v4l2_control *ctrl) { int data; + struct i2c_client *client = to_i2c_client(icd->control); const struct v4l2_queryctrl *qctrl; qctrl = soc_camera_find_qctrl(&mt9v022_ops, ctrl->id); @@ -562,17 +566,17 @@ static int mt9v022_set_control(struct soc_camera_device *icd, switch (ctrl->id) { case V4L2_CID_VFLIP: if (ctrl->value) - data = reg_set(icd, MT9V022_READ_MODE, 0x10); + data = reg_set(client, MT9V022_READ_MODE, 0x10); else - data = reg_clear(icd, MT9V022_READ_MODE, 0x10); + data = reg_clear(client, MT9V022_READ_MODE, 0x10); if (data < 0) return -EIO; break; case V4L2_CID_HFLIP: if (ctrl->value) - data = reg_set(icd, MT9V022_READ_MODE, 0x20); + data = reg_set(client, MT9V022_READ_MODE, 0x20); else - data = reg_clear(icd, MT9V022_READ_MODE, 0x20); + data = reg_clear(client, MT9V022_READ_MODE, 0x20); if (data < 0) return -EIO; break; @@ -593,12 +597,12 @@ static int mt9v022_set_control(struct soc_camera_device *icd, /* The user wants to set gain manually, hope, she * knows, what she's doing... Switch AGC off. */ - if (reg_clear(icd, MT9V022_AEC_AGC_ENABLE, 0x2) < 0) + if (reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x2) < 0) return -EIO; dev_info(&icd->dev, "Setting gain from %d to %lu\n", - reg_read(icd, MT9V022_ANALOG_GAIN), gain); - if (reg_write(icd, MT9V022_ANALOG_GAIN, gain) < 0) + reg_read(client, MT9V022_ANALOG_GAIN), gain); + if (reg_write(client, MT9V022_ANALOG_GAIN, gain) < 0) return -EIO; icd->gain = ctrl->value; } @@ -614,13 +618,13 @@ static int mt9v022_set_control(struct soc_camera_device *icd, /* The user wants to set shutter width manually, hope, * she knows, what she's doing... Switch AEC off. */ - if (reg_clear(icd, MT9V022_AEC_AGC_ENABLE, 0x1) < 0) + if (reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x1) < 0) return -EIO; dev_dbg(&icd->dev, "Shutter width from %d to %lu\n", - reg_read(icd, MT9V022_TOTAL_SHUTTER_WIDTH), + reg_read(client, MT9V022_TOTAL_SHUTTER_WIDTH), shutter); - if (reg_write(icd, MT9V022_TOTAL_SHUTTER_WIDTH, + if (reg_write(client, MT9V022_TOTAL_SHUTTER_WIDTH, shutter) < 0) return -EIO; icd->exposure = ctrl->value; @@ -628,17 +632,17 @@ static int mt9v022_set_control(struct soc_camera_device *icd, break; case V4L2_CID_AUTOGAIN: if (ctrl->value) - data = reg_set(icd, MT9V022_AEC_AGC_ENABLE, 0x2); + data = reg_set(client, MT9V022_AEC_AGC_ENABLE, 0x2); else - data = reg_clear(icd, MT9V022_AEC_AGC_ENABLE, 0x2); + 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(icd, MT9V022_AEC_AGC_ENABLE, 0x1); + data = reg_set(client, MT9V022_AEC_AGC_ENABLE, 0x1); else - data = reg_clear(icd, MT9V022_AEC_AGC_ENABLE, 0x1); + data = reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x1); if (data < 0) return -EIO; break; @@ -650,8 +654,9 @@ static int mt9v022_set_control(struct soc_camera_device *icd, * 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 = to_i2c_client(icd->control); struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); - struct soc_camera_link *icl = mt9v022->client->dev.platform_data; + struct soc_camera_link *icl = client->dev.platform_data; s32 data; int ret; unsigned long flags; @@ -661,7 +666,7 @@ static int mt9v022_video_probe(struct soc_camera_device *icd) return -ENODEV; /* Read out the chip version register */ - data = reg_read(icd, MT9V022_CHIP_VERSION); + data = reg_read(client, MT9V022_CHIP_VERSION); /* must be 0x1311 or 0x1313 */ if (data != 0x1311 && data != 0x1313) { @@ -672,12 +677,12 @@ static int mt9v022_video_probe(struct soc_camera_device *icd) } /* Soft reset */ - ret = reg_write(icd, MT9V022_RESET, 1); + ret = reg_write(client, MT9V022_RESET, 1); if (ret < 0) goto ei2c; /* 15 clock cycles */ udelay(200); - if (reg_read(icd, MT9V022_RESET)) { + if (reg_read(client, MT9V022_RESET)) { dev_err(&icd->dev, "Resetting MT9V022 failed!\n"); goto ei2c; } @@ -685,11 +690,11 @@ static int mt9v022_video_probe(struct soc_camera_device *icd) /* Set monochrome or colour sensor type */ if (sensor_type && (!strcmp("colour", sensor_type) || !strcmp("color", sensor_type))) { - ret = reg_write(icd, MT9V022_PIXEL_OPERATION_MODE, 4 | 0x11); + ret = reg_write(client, MT9V022_PIXEL_OPERATION_MODE, 4 | 0x11); mt9v022->model = V4L2_IDENT_MT9V022IX7ATC; icd->formats = mt9v022_colour_formats; } else { - ret = reg_write(icd, MT9V022_PIXEL_OPERATION_MODE, 0x11); + ret = reg_write(client, MT9V022_PIXEL_OPERATION_MODE, 0x11); mt9v022->model = V4L2_IDENT_MT9V022IX7ATM; icd->formats = mt9v022_monochrome_formats; } -- cgit v1.2.3