diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/media/video/Kconfig | 6 | ||||
| -rw-r--r-- | drivers/media/video/Makefile | 1 | ||||
| -rw-r--r-- | drivers/media/video/mt9t031.c | 736 | ||||
| -rw-r--r-- | include/media/v4l2-chip-ident.h | 1 |
4 files changed, 744 insertions, 0 deletions
diff --git a/drivers/media/video/Kconfig b/drivers/media/video/Kconfig index 9785eeb1ed44..19cf3b8f67c4 100644 --- a/drivers/media/video/Kconfig +++ b/drivers/media/video/Kconfig @@ -741,6 +741,12 @@ config SOC_CAMERA_MT9M111 help This driver supports MT9M111 and MT9M112 cameras from Micron +config SOC_CAMERA_MT9T031 + tristate "mt9t031 support" + depends on SOC_CAMERA && I2C + help + This driver supports MT9T031 cameras from Micron. + config SOC_CAMERA_MT9V022 tristate "mt9v022 support" depends on SOC_CAMERA && I2C diff --git a/drivers/media/video/Makefile b/drivers/media/video/Makefile index 40c69afcde7a..1611c33b1aee 100644 --- a/drivers/media/video/Makefile +++ b/drivers/media/video/Makefile @@ -137,6 +137,7 @@ obj-$(CONFIG_VIDEO_OMAP2) += omap2cam.o obj-$(CONFIG_SOC_CAMERA) += soc_camera.o obj-$(CONFIG_SOC_CAMERA_MT9M001) += mt9m001.o obj-$(CONFIG_SOC_CAMERA_MT9M111) += mt9m111.o +obj-$(CONFIG_SOC_CAMERA_MT9T031) += mt9t031.o obj-$(CONFIG_SOC_CAMERA_MT9V022) += mt9v022.o obj-$(CONFIG_SOC_CAMERA_OV772X) += ov772x.o obj-$(CONFIG_SOC_CAMERA_PLATFORM) += soc_camera_platform.o diff --git a/drivers/media/video/mt9t031.c b/drivers/media/video/mt9t031.c new file mode 100644 index 000000000000..1a9d53966d06 --- /dev/null +++ b/drivers/media/video/mt9t031.c @@ -0,0 +1,736 @@ +/* + * Driver for MT9T031 CMOS Image Sensor from Micron + * + * Copyright (C) 2008, Guennadi Liakhovetski, DENX Software Engineering <lg@denx.de> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/videodev2.h> +#include <linux/slab.h> +#include <linux/i2c.h> +#include <linux/log2.h> + +#include <media/v4l2-common.h> +#include <media/v4l2-chip-ident.h> +#include <media/soc_camera.h> + +/* mt9t031 i2c address 0x5d + * The platform has to define i2c_board_info + * and call i2c_register_board_info() */ + +/* mt9t031 selected register addresses */ +#define MT9T031_CHIP_VERSION 0x00 +#define MT9T031_ROW_START 0x01 +#define MT9T031_COLUMN_START 0x02 +#define MT9T031_WINDOW_HEIGHT 0x03 +#define MT9T031_WINDOW_WIDTH 0x04 +#define MT9T031_HORIZONTAL_BLANKING 0x05 +#define MT9T031_VERTICAL_BLANKING 0x06 +#define MT9T031_OUTPUT_CONTROL 0x07 +#define MT9T031_SHUTTER_WIDTH_UPPER 0x08 +#define MT9T031_SHUTTER_WIDTH 0x09 +#define MT9T031_PIXEL_CLOCK_CONTROL 0x0a +#define MT9T031_FRAME_RESTART 0x0b +#define MT9T031_SHUTTER_DELAY 0x0c +#define MT9T031_RESET 0x0d +#define MT9T031_READ_MODE_1 0x1e +#define MT9T031_READ_MODE_2 0x20 +#define MT9T031_READ_MODE_3 0x21 +#define MT9T031_ROW_ADDRESS_MODE 0x22 +#define MT9T031_COLUMN_ADDRESS_MODE 0x23 +#define MT9T031_GLOBAL_GAIN 0x35 +#define MT9T031_CHIP_ENABLE 0xF8 + +#define MT9T031_MAX_HEIGHT 1536 +#define MT9T031_MAX_WIDTH 2048 +#define MT9T031_MIN_HEIGHT 2 +#define MT9T031_MIN_WIDTH 2 +#define MT9T031_HORIZONTAL_BLANK 142 +#define MT9T031_VERTICAL_BLANK 25 +#define MT9T031_COLUMN_SKIP 32 +#define MT9T031_ROW_SKIP 20 + +#define MT9T031_BUS_PARAM (SOCAM_PCLK_SAMPLE_RISING | \ + SOCAM_PCLK_SAMPLE_FALLING | SOCAM_HSYNC_ACTIVE_HIGH | \ + SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_DATA_ACTIVE_HIGH | \ + SOCAM_MASTER | SOCAM_DATAWIDTH_10) + +static const struct soc_camera_data_format mt9t031_colour_formats[] = { + { + .name = "Bayer (sRGB) 10 bit", + .depth = 10, + .fourcc = V4L2_PIX_FMT_SGRBG10, + .colorspace = V4L2_COLORSPACE_SRGB, + } +}; + +struct mt9t031 { + struct i2c_client *client; + struct soc_camera_device icd; + int model; /* V4L2_IDENT_MT9T031* codes from v4l2-chip-ident.h */ + unsigned char autoexposure; + u16 xskip; + u16 yskip; +}; + +static int reg_read(struct soc_camera_device *icd, const u8 reg) +{ + struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd); + struct i2c_client *client = mt9t031->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, + const u16 data) +{ + struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd); + return i2c_smbus_write_word_data(mt9t031->client, reg, swab16(data)); +} + +static int reg_set(struct soc_camera_device *icd, const u8 reg, + const u16 data) +{ + int ret; + + ret = reg_read(icd, reg); + if (ret < 0) + return ret; + return reg_write(icd, reg, ret | data); +} + +static int reg_clear(struct soc_camera_device *icd, const u8 reg, + const u16 data) +{ + int ret; + + ret = reg_read(icd, reg); + if (ret < 0) + return ret; + return reg_write(icd, reg, ret & ~data); +} + +static int set_shutter(struct soc_camera_device *icd, const u32 data) +{ + int ret; + + ret = reg_write(icd, MT9T031_SHUTTER_WIDTH_UPPER, data >> 16); + + if (ret >= 0) + ret = reg_write(icd, MT9T031_SHUTTER_WIDTH, data & 0xffff); + + return ret; +} + +static int get_shutter(struct soc_camera_device *icd, u32 *data) +{ + int ret; + + ret = reg_read(icd, MT9T031_SHUTTER_WIDTH_UPPER); + *data = ret << 16; + + if (ret >= 0) + ret = reg_read(icd, MT9T031_SHUTTER_WIDTH); + *data |= ret & 0xffff; + + return ret < 0 ? ret : 0; +} + +static int mt9t031_init(struct soc_camera_device *icd) +{ + int ret; + + /* Disable chip output, synchronous option update */ + dev_dbg(icd->vdev->parent, "%s\n", __func__); + + ret = reg_write(icd, MT9T031_RESET, 1); + if (ret >= 0) + ret = reg_write(icd, MT9T031_RESET, 0); + if (ret >= 0) + ret = reg_clear(icd, MT9T031_OUTPUT_CONTROL, 3); + + return ret >= 0 ? 0 : -EIO; +} + +static int mt9t031_release(struct soc_camera_device *icd) +{ + /* Disable the chip */ + reg_clear(icd, MT9T031_OUTPUT_CONTROL, 3); + return 0; +} + +static int mt9t031_start_capture(struct soc_camera_device *icd) +{ + /* Switch to master "normal" mode */ + if (reg_set(icd, MT9T031_OUTPUT_CONTROL, 3) < 0) + return -EIO; + return 0; +} + +static int mt9t031_stop_capture(struct soc_camera_device *icd) +{ + /* Stop sensor readout */ + if (reg_clear(icd, MT9T031_OUTPUT_CONTROL, 3) < 0) + return -EIO; + return 0; +} + +static int mt9t031_set_bus_param(struct soc_camera_device *icd, + unsigned long flags) +{ + /* The caller should have queried our parameters, check anyway */ + if (flags & ~MT9T031_BUS_PARAM) + return -EINVAL; + + if (flags & SOCAM_PCLK_SAMPLE_FALLING) + reg_set(icd, MT9T031_PIXEL_CLOCK_CONTROL, 0x8000); + else + reg_clear(icd, MT9T031_PIXEL_CLOCK_CONTROL, 0x8000); + + return 0; +} + +static unsigned long mt9t031_query_bus_param(struct soc_camera_device *icd) +{ + struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd); + struct soc_camera_link *icl = mt9t031->client->dev.platform_data; + + return soc_camera_apply_sensor_flags(icl, MT9T031_BUS_PARAM); +} + +static int mt9t031_set_fmt(struct soc_camera_device *icd, + __u32 pixfmt, struct v4l2_rect *rect) +{ + struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd); + int ret; + const u16 hblank = MT9T031_HORIZONTAL_BLANK, + vblank = MT9T031_VERTICAL_BLANK; + u16 xbin, xskip = mt9t031->xskip, ybin, yskip = mt9t031->yskip, + width = rect->width * xskip, height = rect->height * yskip; + + if (pixfmt) { + /* S_FMT - use binning and skipping for scaling, recalculate */ + /* Is this more optimal than just a division? */ + for (xskip = 8; xskip > 1; xskip--) + if (rect->width * xskip <= icd->width_max) + break; + + for (yskip = 8; yskip > 1; yskip--) + if (rect->height * yskip <= icd->height_max) + break; + + width = rect->width * xskip; + height = rect->height * yskip; + + dev_dbg(&icd->dev, "xskip %u, width %u, yskip %u, height %u\n", + xskip, width, yskip, height); + } + + xbin = min(xskip, (u16)3); + ybin = min(yskip, (u16)3); + + /* Make sure we don't exceed frame limits */ + if (rect->left + width > icd->width_max) + rect->left = (icd->width_max - width) / 2; + + if (rect->top + height > icd->height_max) + rect->top = (icd->height_max - height) / 2; + + /* Could just do roundup(rect->left, [xy]bin); but this is cheaper */ + switch (xbin) { + case 2: + rect->left = (rect->left + 1) & ~1; + break; + case 3: + rect->left = roundup(rect->left, 3); + } + + switch (ybin) { + case 2: + rect->top = (rect->top + 1) & ~1; + break; + case 3: + rect->top = roundup(rect->top, 3); + } + + /* Blanking and start values - default... */ + ret = reg_write(icd, MT9T031_HORIZONTAL_BLANKING, hblank); + if (ret >= 0) + ret = reg_write(icd, MT9T031_VERTICAL_BLANKING, vblank); + + if (pixfmt) { + /* Binning, skipping */ + if (ret >= 0) + ret = reg_write(icd, MT9T031_COLUMN_ADDRESS_MODE, + ((xbin - 1) << 4) | (xskip - 1)); + if (ret >= 0) + ret = reg_write(icd, MT9T031_ROW_ADDRESS_MODE, + ((ybin - 1) << 4) | (yskip - 1)); + } + dev_dbg(&icd->dev, "new left %u, top %u\n", rect->left, rect->top); + + /* The caller provides a supported format, as guaranteed by + * icd->try_fmt_cap(), soc_camera_s_crop() and soc_camera_cropcap() */ + if (ret >= 0) + ret = reg_write(icd, MT9T031_COLUMN_START, rect->left); + if (ret >= 0) + ret = reg_write(icd, MT9T031_ROW_START, rect->top); + if (ret >= 0) + ret = reg_write(icd, MT9T031_WINDOW_WIDTH, width - 1); + if (ret >= 0) + ret = reg_write(icd, MT9T031_WINDOW_HEIGHT, + height + icd->y_skip_top - 1); + if (ret >= 0 && mt9t031->autoexposure) { + ret = set_shutter(icd, height + icd->y_skip_top + vblank); + if (ret >= 0) { + const u32 shutter_max = MT9T031_MAX_HEIGHT + vblank; + const struct v4l2_queryctrl *qctrl = + soc_camera_find_qctrl(icd->ops, + V4L2_CID_EXPOSURE); + icd->exposure = (shutter_max / 2 + (height + + icd->y_skip_top + vblank - 1) * + (qctrl->maximum - qctrl->minimum)) / + shutter_max + qctrl->minimum; + } + } + + if (!ret && pixfmt) { + mt9t031->xskip = xskip; + mt9t031->yskip = yskip; + } + + return ret < 0 ? ret : 0; +} + +static int mt9t031_try_fmt(struct soc_camera_device *icd, + struct v4l2_format *f) +{ + struct v4l2_pix_format *pix = &f->fmt.pix; + + if (pix->height < icd->height_min) + pix->height = icd->height_min; + if (pix->height > icd->height_max) + pix->height = icd->height_max; + if (pix->width < icd->width_min) + pix->width = icd->width_min; + if (pix->width > icd->width_max) + pix->width = icd->width_max; + + pix->width &= ~0x01; /* has to be even */ + pix->height &= ~0x01; /* has to be even */ + + return 0; +} + +static int mt9t031_get_chip_id(struct soc_camera_device *icd, + struct v4l2_chip_ident *id) +{ + struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd); + + if (id->match_type != V4L2_CHIP_MATCH_I2C_ADDR) + return -EINVAL; + + if (id->match_chip != mt9t031->client->addr) + return -ENODEV; + + id->ident = mt9t031->model; + id->revision = 0; + + return 0; +} + +#ifdef CONFIG_VIDEO_ADV_DEBUG +static int mt9t031_get_register(struct soc_camera_device *icd, + struct v4l2_register *reg) +{ + struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd); + + if (reg->match_type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff) + return -EINVAL; + + if (reg->match_chip != mt9t031->client->addr) + return -ENODEV; + + reg->val = reg_read(icd, reg->reg); + + if (reg->val > 0xffff) + return -EIO; + + return 0; +} + +static int mt9t031_set_register(struct soc_camera_device *icd, + struct v4l2_register *reg) +{ + struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd); + + if (reg->match_type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff) + return -EINVAL; + + if (reg->match_chip != mt9t031->client->addr) + return -ENODEV; + + if (reg_write(icd, reg->reg, reg->val) < 0) + return -EIO; + + return 0; +} +#endif + +static const struct v4l2_queryctrl mt9t031_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_GAIN, + .type = V4L2_CTRL_TYPE_INTEGER, + .name = "Gain", + .minimum = 0, + .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_EXPOSURE_AUTO, + .type = V4L2_CTRL_TYPE_BOOLEAN, + .name = "Automatic Exposure", + .minimum = 0, + .maximum = 1, + .step = 1, + .default_value = 1, + } +}; + +static int mt9t031_video_probe(struct soc_camera_device *); +static void mt9t031_video_remove(struct soc_camera_device *); +static int mt9t031_get_control(struct soc_camera_device *, struct v4l2_control *); +static int mt9t031_set_control(struct soc_camera_device *, struct v4l2_control *); + +static struct soc_camera_ops mt9t031_ops = { + .owner = THIS_MODULE, + .probe = mt9t031_video_probe, + .remove = mt9t031_video_remove, + .init = mt9t031_init, + .release = mt9t031_release, + .start_capture = mt9t031_start_capture, + .stop_capture = mt9t031_stop_capture, + .set_fmt = mt9t031_set_fmt, + .try_fmt = mt9t031_try_fmt, + .set_bus_param = mt9t031_set_bus_param, + .query_bus_param = mt9t031_query_bus_param, + .controls = mt9t031_controls, + .num_controls = ARRAY_SIZE(mt9t031_controls), + .get_control = mt9t031_get_control, + .set_control = mt9t031_set_control, + .get_chip_id = mt9t031_get_chip_id, +#ifdef CONFIG_VIDEO_ADV_DEBUG + .get_register = mt9t031_get_register, + .set_register = mt9t031_set_register, +#endif +}; + +static int mt9t031_get_control(struct soc_camera_device *icd, struct v4l2_control *ctrl) +{ + struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd); + int data; + + switch (ctrl->id) { + case V4L2_CID_VFLIP: + data = reg_read(icd, MT9T031_READ_MODE_2); + if (data < 0) + return -EIO; + ctrl->value = !!(data & 0x8000); + break; + case V4L2_CID_HFLIP: + data = reg_read(icd, MT9T031_READ_MODE_2); + if (data < 0) + return -EIO; + ctrl->value = !!(data & 0x4000); + break; + case V4L2_CID_EXPOSURE_AUTO: + ctrl->value = mt9t031->autoexposure; + break; + } + return 0; +} + +static int mt9t031_set_control(struct soc_camera_device *icd, struct v4l2_control *ctrl) +{ + struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd); + const struct v4l2_queryctrl *qctrl; + int data; + + qctrl = soc_camera_find_qctrl(&mt9t031_ops, ctrl->id); + + if (!qctrl) + return -EINVAL; + + switch (ctrl->id) { + case V4L2_CID_VFLIP: + if (ctrl->value) + data = reg_set(icd, MT9T031_READ_MODE_2, 0x8000); + else + data = reg_clear(icd, MT9T031_READ_MODE_2, 0x8000); + if (data < 0) + return -EIO; + break; + case V4L2_CID_HFLIP: + if (ctrl->value) + data = reg_set(icd, MT9T031_READ_MODE_2, 0x4000); + else + data = reg_clear(icd, MT9T031_READ_MODE_2, 0x4000); + if (data < 0) + return -EIO; + break; + case V4L2_CID_GAIN: + if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum) + return -EINVAL; + /* See Datasheet Table 7, Gain settings. */ + if (ctrl->value <= qctrl->default_value) { + /* Pack it into 0..1 step 0.125, register values 0..8 */ + unsigned long range = qctrl->default_value - qctrl->minimum; + data = ((ctrl->value - qctrl->minimum) * 8 + range / 2) / range; + + dev_dbg(&icd->dev, "Setting gain %d\n", data); + data = reg_write(icd, MT9T031_GLOBAL_GAIN, data); + if (data < 0) + return -EIO; + } else { + /* Pack it into 1.125..15 variable step, register values 9..67 */ + /* We assume qctrl->maximum - qctrl->default_value - 1 > 0 */ + unsigned long range = qctrl->maximum - qctrl->default_value - 1; + unsigned long gain = ((ctrl->value - qctrl->default_value - 1) * + 111 + range / 2) / range + 9; + + if (gain <= 32) + data = gain; + else if (gain <= 64) + data = ((gain - 32) * 16 + 16) / 32 + 80; + else + data = ((gain - 64) * 7 + 28) / 56 + 96; + + dev_dbg(&icd->dev, "Setting gain from %d to %d\n", + reg_read(icd, MT9T031_GLOBAL_GAIN), data); + data = reg_write(icd, MT9T031_GLOBAL_GAIN, data); + if (data < 0) + return -EIO; + } + + /* Success */ + icd->gain = ctrl->value; + break; + case V4L2_CID_EXPOSURE: + /* mt9t031 has maximum == default */ + if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum) + return -EINVAL; + else { + const unsigned long range = qctrl->maximum - qctrl->minimum; + const u32 shutter = ((ctrl->value - qctrl->minimum) * 1048 + + range / 2) / range + 1; + u32 old; + + get_shutter(icd, &old); + dev_dbg(&icd->dev, "Setting shutter width from %u to %u\n", + old, shutter); + if (set_shutter(icd, shutter) < 0) + return -EIO; + icd->exposure = ctrl->value; + mt9t031->autoexposure = 0; + } + break; + case V4L2_CID_EXPOSURE_AUTO: + if (ctrl->value) { + const u16 vblank = MT9T031_VERTICAL_BLANK; + const u32 shutter_max = MT9T031_MAX_HEIGHT + vblank; + if (set_shutter(icd, icd->height + + icd->y_skip_top + vblank) < 0) + return -EIO; + qctrl = soc_camera_find_qctrl(icd->ops, V4L2_CID_EXPOSURE); + icd->exposure = (shutter_max / 2 + (icd->height + + icd->y_skip_top + vblank - 1) * + (qctrl->maximum - qctrl->minimum)) / + shutter_max + qctrl->minimum; + mt9t031->autoexposure = 1; + } else + mt9t031->autoexposure = 0; + break; + } + return 0; +} + +/* 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 mt9t031_video_probe(struct soc_camera_device *icd) +{ + struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd); + s32 data; + int ret; + + /* We must have a parent by now. And it cannot be a wrong one. + * So this entire test is completely redundant. */ + if (!icd->dev.parent || + to_soc_camera_host(icd->dev.parent)->nr != icd->iface) + return -ENODEV; + + /* Enable the chip */ + data = reg_write(icd, MT9T031_CHIP_ENABLE, 1); + dev_dbg(&icd->dev, "write: %d\n", data); + + /* Read out the chip version register */ + data = reg_read(icd, MT9T031_CHIP_VERSION); + + switch (data) { + case 0x1621: + mt9t031->model = V4L2_IDENT_MT9T031; + icd->formats = mt9t031_colour_formats; + icd->num_formats = ARRAY_SIZE(mt9t031_colour_formats); + break; + default: + ret = -ENODEV; + dev_err(&icd->dev, + "No MT9T031 chip detected, register read %x\n", data); + goto ei2c; + } + + dev_info(&icd->dev, "Detected a MT9T031 chip ID %x\n", data); + + /* Now that we know the model, we can start video */ + ret = soc_camera_video_start(icd); + if (ret) + goto evstart; + + return 0; + +evstart: +ei2c: + return ret; +} + +static void mt9t031_video_remove(struct soc_camera_device *icd) +{ + struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd); + + dev_dbg(&icd->dev, "Video %x removed: %p, %p\n", mt9t031->client->addr, + icd->dev.parent, icd->vdev); + soc_camera_video_stop(icd); +} + +static int mt9t031_probe(struct i2c_client *client, + const struct i2c_device_id *did) +{ + struct mt9t031 *mt9t031; + struct soc_camera_device *icd; + struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); + struct soc_camera_link *icl = client->dev.platform_data; + int ret; + + if (!icl) { + dev_err(&client->dev, "MT9T031 driver needs platform data\n"); + return -EINVAL; + } + + if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) { + dev_warn(&adapter->dev, + "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n"); + return -EIO; + } + + mt9t031 = kzalloc(sizeof(struct mt9t031), GFP_KERNEL); + if (!mt9t031) + return -ENOMEM; + + mt9t031->client = client; + i2c_set_clientdata(client, mt9t031); + + /* Second stage probe - when a capture adapter is there */ + icd = &mt9t031->icd; + icd->ops = &mt9t031_ops; + icd->control = &client->dev; + icd->x_min = MT9T031_COLUMN_SKIP; + icd->y_min = MT9T031_ROW_SKIP; + icd->x_current = icd->x_min; + icd->y_current = icd->y_min; + icd->width_min = MT9T031_MIN_WIDTH; + icd->width_max = MT9T031_MAX_WIDTH; + icd->height_min = MT9T031_MIN_HEIGHT; + icd->height_max = MT9T031_MAX_HEIGHT; + icd->y_skip_top = 0; + icd->iface = icl->bus_id; + /* Simulated autoexposure. If enabled, we calculate shutter width + * ourselves in the driver based on vertical blanking and frame width */ + mt9t031->autoexposure = 1; + + mt9t031->xskip = 1; + mt9t031->yskip = 1; + + ret = soc_camera_device_register(icd); + if (ret) + goto eisdr; + + return 0; + +eisdr: + i2c_set_clientdata(client, NULL); + kfree(mt9t031); + return ret; +} + +static int mt9t031_remove(struct i2c_client *client) +{ + struct mt9t031 *mt9t031 = i2c_get_clientdata(client); + + soc_camera_device_unregister(&mt9t031->icd); + i2c_set_clientdata(client, NULL); + kfree(mt9t031); + + return 0; +} + +static const struct i2c_device_id mt9t031_id[] = { + { "mt9t031", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, mt9t031_id); + +static struct i2c_driver mt9t031_i2c_driver = { + .driver = { + .name = "mt9t031", + }, + .probe = mt9t031_probe, + .remove = mt9t031_remove, + .id_table = mt9t031_id, +}; + +static int __init mt9t031_mod_init(void) +{ + return i2c_add_driver(&mt9t031_i2c_driver); +} + +static void __exit mt9t031_mod_exit(void) +{ + i2c_del_driver(&mt9t031_i2c_driver); +} + +module_init(mt9t031_mod_init); +module_exit(mt9t031_mod_exit); + +MODULE_DESCRIPTION("Micron MT9T031 Camera driver"); +MODULE_AUTHOR("Guennadi Liakhovetski <lg@denx.de>"); +MODULE_LICENSE("GPL v2"); diff --git a/include/media/v4l2-chip-ident.h b/include/media/v4l2-chip-ident.h index f9d42ad99b4f..43dbb659f1f5 100644 --- a/include/media/v4l2-chip-ident.h +++ b/include/media/v4l2-chip-ident.h @@ -177,6 +177,7 @@ enum { V4L2_IDENT_MT9M112 = 45008, V4L2_IDENT_MT9V022IX7ATC = 45010, /* No way to detect "normal" I77ATx */ V4L2_IDENT_MT9V022IX7ATM = 45015, /* and "lead free" IA7ATx chips */ + V4L2_IDENT_MT9T031 = 45020, }; #endif |