diff options
Diffstat (limited to 'drivers/media/i2c')
21 files changed, 15835 insertions, 0 deletions
diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig index 1c677f5e3a1a..7fe4acf2f80b 100644 --- a/drivers/media/i2c/Kconfig +++ b/drivers/media/i2c/Kconfig @@ -562,5 +562,9 @@ config VIDEO_M52790 To compile this driver as a module, choose M here: the module will be called m52790. +if SOC_CAMERA + source "drivers/media/i2c/soc_camera/Kconfig" +endif + endmenu endif diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile index 93e8c1439596..088a46015605 100644 --- a/drivers/media/i2c/Makefile +++ b/drivers/media/i2c/Makefile @@ -4,6 +4,7 @@ obj-$(CONFIG_VIDEO_MSP3400) += msp3400.o obj-$(CONFIG_VIDEO_SMIAPP) += smiapp/ obj-$(CONFIG_VIDEO_CX25840) += cx25840/ obj-$(CONFIG_VIDEO_M5MOLS) += m5mols/ +obj-y += soc_camera/ obj-$(CONFIG_VIDEO_APTINA_PLL) += aptina-pll.o obj-$(CONFIG_VIDEO_TVAUDIO) += tvaudio.o diff --git a/drivers/media/i2c/soc_camera/Kconfig b/drivers/media/i2c/soc_camera/Kconfig new file mode 100644 index 000000000000..73fe21d1b2df --- /dev/null +++ b/drivers/media/i2c/soc_camera/Kconfig @@ -0,0 +1,89 @@ +comment "soc_camera sensor drivers" + +config SOC_CAMERA_IMX074 + tristate "imx074 support" + depends on SOC_CAMERA && I2C + help + This driver supports IMX074 cameras from Sony + +config SOC_CAMERA_MT9M001 + tristate "mt9m001 support" + depends on SOC_CAMERA && I2C + select GPIO_PCA953X if MT9M001_PCA9536_SWITCH + help + This driver supports MT9M001 cameras from Micron, monochrome + and colour models. + +config SOC_CAMERA_MT9M111 + tristate "mt9m111, mt9m112 and mt9m131 support" + depends on SOC_CAMERA && I2C + help + This driver supports MT9M111, MT9M112 and MT9M131 cameras from + Micron/Aptina + +config SOC_CAMERA_MT9T031 + tristate "mt9t031 support" + depends on SOC_CAMERA && I2C + help + This driver supports MT9T031 cameras from Micron. + +config SOC_CAMERA_MT9T112 + tristate "mt9t112 support" + depends on SOC_CAMERA && I2C + help + This driver supports MT9T112 cameras from Aptina. + +config SOC_CAMERA_MT9V022 + tristate "mt9v022 support" + depends on SOC_CAMERA && I2C + select GPIO_PCA953X if MT9V022_PCA9536_SWITCH + help + This driver supports MT9V022 cameras from Micron + +config SOC_CAMERA_OV2640 + tristate "ov2640 camera support" + depends on SOC_CAMERA && I2C + help + This is a ov2640 camera driver + +config SOC_CAMERA_OV5642 + tristate "ov5642 camera support" + depends on SOC_CAMERA && I2C + help + This is a V4L2 camera driver for the OmniVision OV5642 sensor + +config SOC_CAMERA_OV6650 + tristate "ov6650 sensor support" + depends on SOC_CAMERA && I2C + ---help--- + This is a V4L2 SoC camera driver for the OmniVision OV6650 sensor + +config SOC_CAMERA_OV772X + tristate "ov772x camera support" + depends on SOC_CAMERA && I2C + help + This is a ov772x camera driver + +config SOC_CAMERA_OV9640 + tristate "ov9640 camera support" + depends on SOC_CAMERA && I2C + help + This is a ov9640 camera driver + +config SOC_CAMERA_OV9740 + tristate "ov9740 camera support" + depends on SOC_CAMERA && I2C + help + This is a ov9740 camera driver + +config SOC_CAMERA_RJ54N1 + tristate "rj54n1cb0c support" + depends on SOC_CAMERA && I2C + help + This is a rj54n1cb0c video driver + +config SOC_CAMERA_TW9910 + tristate "tw9910 support" + depends on SOC_CAMERA && I2C + help + This is a tw9910 video driver diff --git a/drivers/media/i2c/soc_camera/Makefile b/drivers/media/i2c/soc_camera/Makefile new file mode 100644 index 000000000000..d0421feaa796 --- /dev/null +++ b/drivers/media/i2c/soc_camera/Makefile @@ -0,0 +1,14 @@ +obj-$(CONFIG_SOC_CAMERA_IMX074) += imx074.o +obj-$(CONFIG_SOC_CAMERA_MT9M001) += mt9m001.o +obj-$(CONFIG_SOC_CAMERA_MT9M111) += mt9m111.o +obj-$(CONFIG_SOC_CAMERA_MT9T031) += mt9t031.o +obj-$(CONFIG_SOC_CAMERA_MT9T112) += mt9t112.o +obj-$(CONFIG_SOC_CAMERA_MT9V022) += mt9v022.o +obj-$(CONFIG_SOC_CAMERA_OV2640) += ov2640.o +obj-$(CONFIG_SOC_CAMERA_OV5642) += ov5642.o +obj-$(CONFIG_SOC_CAMERA_OV6650) += ov6650.o +obj-$(CONFIG_SOC_CAMERA_OV772X) += ov772x.o +obj-$(CONFIG_SOC_CAMERA_OV9640) += ov9640.o +obj-$(CONFIG_SOC_CAMERA_OV9740) += ov9740.o +obj-$(CONFIG_SOC_CAMERA_RJ54N1) += rj54n1cb0c.o +obj-$(CONFIG_SOC_CAMERA_TW9910) += tw9910.o diff --git a/drivers/media/i2c/soc_camera/imx074.c b/drivers/media/i2c/soc_camera/imx074.c new file mode 100644 index 000000000000..351e9bafe8fe --- /dev/null +++ b/drivers/media/i2c/soc_camera/imx074.c @@ -0,0 +1,475 @@ +/* + * Driver for IMX074 CMOS Image Sensor from Sony + * + * Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de> + * + * Partially inspired by the IMX074 driver from the Android / MSM tree + * + * 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/delay.h> +#include <linux/i2c.h> +#include <linux/v4l2-mediabus.h> +#include <linux/slab.h> +#include <linux/videodev2.h> +#include <linux/module.h> + +#include <media/soc_camera.h> +#include <media/v4l2-subdev.h> +#include <media/v4l2-chip-ident.h> + +/* IMX074 registers */ + +#define MODE_SELECT 0x0100 +#define IMAGE_ORIENTATION 0x0101 +#define GROUPED_PARAMETER_HOLD 0x0104 + +/* Integration Time */ +#define COARSE_INTEGRATION_TIME_HI 0x0202 +#define COARSE_INTEGRATION_TIME_LO 0x0203 +/* Gain */ +#define ANALOGUE_GAIN_CODE_GLOBAL_HI 0x0204 +#define ANALOGUE_GAIN_CODE_GLOBAL_LO 0x0205 + +/* PLL registers */ +#define PRE_PLL_CLK_DIV 0x0305 +#define PLL_MULTIPLIER 0x0307 +#define PLSTATIM 0x302b +#define VNDMY_ABLMGSHLMT 0x300a +#define Y_OPBADDR_START_DI 0x3014 +/* mode setting */ +#define FRAME_LENGTH_LINES_HI 0x0340 +#define FRAME_LENGTH_LINES_LO 0x0341 +#define LINE_LENGTH_PCK_HI 0x0342 +#define LINE_LENGTH_PCK_LO 0x0343 +#define YADDR_START 0x0347 +#define YADDR_END 0x034b +#define X_OUTPUT_SIZE_MSB 0x034c +#define X_OUTPUT_SIZE_LSB 0x034d +#define Y_OUTPUT_SIZE_MSB 0x034e +#define Y_OUTPUT_SIZE_LSB 0x034f +#define X_EVEN_INC 0x0381 +#define X_ODD_INC 0x0383 +#define Y_EVEN_INC 0x0385 +#define Y_ODD_INC 0x0387 + +#define HMODEADD 0x3001 +#define VMODEADD 0x3016 +#define VAPPLINE_START 0x3069 +#define VAPPLINE_END 0x306b +#define SHUTTER 0x3086 +#define HADDAVE 0x30e8 +#define LANESEL 0x3301 + +/* IMX074 supported geometry */ +#define IMX074_WIDTH 1052 +#define IMX074_HEIGHT 780 + +/* IMX074 has only one fixed colorspace per pixelcode */ +struct imx074_datafmt { + enum v4l2_mbus_pixelcode code; + enum v4l2_colorspace colorspace; +}; + +struct imx074 { + struct v4l2_subdev subdev; + const struct imx074_datafmt *fmt; +}; + +static const struct imx074_datafmt imx074_colour_fmts[] = { + {V4L2_MBUS_FMT_SBGGR8_1X8, V4L2_COLORSPACE_SRGB}, +}; + +static struct imx074 *to_imx074(const struct i2c_client *client) +{ + return container_of(i2c_get_clientdata(client), struct imx074, subdev); +} + +/* Find a data format by a pixel code in an array */ +static const struct imx074_datafmt *imx074_find_datafmt(enum v4l2_mbus_pixelcode code) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(imx074_colour_fmts); i++) + if (imx074_colour_fmts[i].code == code) + return imx074_colour_fmts + i; + + return NULL; +} + +static int reg_write(struct i2c_client *client, const u16 addr, const u8 data) +{ + struct i2c_adapter *adap = client->adapter; + struct i2c_msg msg; + unsigned char tx[3]; + int ret; + + msg.addr = client->addr; + msg.buf = tx; + msg.len = 3; + msg.flags = 0; + + tx[0] = addr >> 8; + tx[1] = addr & 0xff; + tx[2] = data; + + ret = i2c_transfer(adap, &msg, 1); + + mdelay(2); + + return ret == 1 ? 0 : -EIO; +} + +static int reg_read(struct i2c_client *client, const u16 addr) +{ + u8 buf[2] = {addr >> 8, addr & 0xff}; + int ret; + struct i2c_msg msgs[] = { + { + .addr = client->addr, + .flags = 0, + .len = 2, + .buf = buf, + }, { + .addr = client->addr, + .flags = I2C_M_RD, + .len = 2, + .buf = buf, + }, + }; + + ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); + if (ret < 0) { + dev_warn(&client->dev, "Reading register %x from %x failed\n", + addr, client->addr); + return ret; + } + + return buf[0] & 0xff; /* no sign-extension */ +} + +static int imx074_try_fmt(struct v4l2_subdev *sd, + struct v4l2_mbus_framefmt *mf) +{ + const struct imx074_datafmt *fmt = imx074_find_datafmt(mf->code); + + dev_dbg(sd->v4l2_dev->dev, "%s(%u)\n", __func__, mf->code); + + if (!fmt) { + mf->code = imx074_colour_fmts[0].code; + mf->colorspace = imx074_colour_fmts[0].colorspace; + } + + mf->width = IMX074_WIDTH; + mf->height = IMX074_HEIGHT; + mf->field = V4L2_FIELD_NONE; + + return 0; +} + +static int imx074_s_fmt(struct v4l2_subdev *sd, + struct v4l2_mbus_framefmt *mf) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct imx074 *priv = to_imx074(client); + + dev_dbg(sd->v4l2_dev->dev, "%s(%u)\n", __func__, mf->code); + + /* MIPI CSI could have changed the format, double-check */ + if (!imx074_find_datafmt(mf->code)) + return -EINVAL; + + imx074_try_fmt(sd, mf); + + priv->fmt = imx074_find_datafmt(mf->code); + + return 0; +} + +static int imx074_g_fmt(struct v4l2_subdev *sd, + struct v4l2_mbus_framefmt *mf) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct imx074 *priv = to_imx074(client); + + const struct imx074_datafmt *fmt = priv->fmt; + + mf->code = fmt->code; + mf->colorspace = fmt->colorspace; + mf->width = IMX074_WIDTH; + mf->height = IMX074_HEIGHT; + mf->field = V4L2_FIELD_NONE; + + return 0; +} + +static int imx074_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a) +{ + struct v4l2_rect *rect = &a->c; + + a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + rect->top = 0; + rect->left = 0; + rect->width = IMX074_WIDTH; + rect->height = IMX074_HEIGHT; + + return 0; +} + +static int imx074_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a) +{ + a->bounds.left = 0; + a->bounds.top = 0; + a->bounds.width = IMX074_WIDTH; + a->bounds.height = IMX074_HEIGHT; + a->defrect = a->bounds; + a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + a->pixelaspect.numerator = 1; + a->pixelaspect.denominator = 1; + + return 0; +} + +static int imx074_enum_fmt(struct v4l2_subdev *sd, unsigned int index, + enum v4l2_mbus_pixelcode *code) +{ + if ((unsigned int)index >= ARRAY_SIZE(imx074_colour_fmts)) + return -EINVAL; + + *code = imx074_colour_fmts[index].code; + return 0; +} + +static int imx074_s_stream(struct v4l2_subdev *sd, int enable) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + + /* MODE_SELECT: stream or standby */ + return reg_write(client, MODE_SELECT, !!enable); +} + +static int imx074_g_chip_ident(struct v4l2_subdev *sd, + struct v4l2_dbg_chip_ident *id) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + + if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR) + return -EINVAL; + + if (id->match.addr != client->addr) + return -ENODEV; + + id->ident = V4L2_IDENT_IMX074; + id->revision = 0; + + return 0; +} + +static int imx074_g_mbus_config(struct v4l2_subdev *sd, + struct v4l2_mbus_config *cfg) +{ + cfg->type = V4L2_MBUS_CSI2; + cfg->flags = V4L2_MBUS_CSI2_2_LANE | + V4L2_MBUS_CSI2_CHANNEL_0 | + V4L2_MBUS_CSI2_CONTINUOUS_CLOCK; + + return 0; +} + +static struct v4l2_subdev_video_ops imx074_subdev_video_ops = { + .s_stream = imx074_s_stream, + .s_mbus_fmt = imx074_s_fmt, + .g_mbus_fmt = imx074_g_fmt, + .try_mbus_fmt = imx074_try_fmt, + .enum_mbus_fmt = imx074_enum_fmt, + .g_crop = imx074_g_crop, + .cropcap = imx074_cropcap, + .g_mbus_config = imx074_g_mbus_config, +}; + +static struct v4l2_subdev_core_ops imx074_subdev_core_ops = { + .g_chip_ident = imx074_g_chip_ident, +}; + +static struct v4l2_subdev_ops imx074_subdev_ops = { + .core = &imx074_subdev_core_ops, + .video = &imx074_subdev_video_ops, +}; + +static int imx074_video_probe(struct i2c_client *client) +{ + int ret; + u16 id; + + /* Read sensor Model ID */ + ret = reg_read(client, 0); + if (ret < 0) + return ret; + + id = ret << 8; + + ret = reg_read(client, 1); + if (ret < 0) + return ret; + + id |= ret; + + dev_info(&client->dev, "Chip ID 0x%04x detected\n", id); + + if (id != 0x74) + return -ENODEV; + + /* PLL Setting EXTCLK=24MHz, 22.5times */ + reg_write(client, PLL_MULTIPLIER, 0x2D); + reg_write(client, PRE_PLL_CLK_DIV, 0x02); + reg_write(client, PLSTATIM, 0x4B); + + /* 2-lane mode */ + reg_write(client, 0x3024, 0x00); + + reg_write(client, IMAGE_ORIENTATION, 0x00); + + /* select RAW mode: + * 0x08+0x08 = top 8 bits + * 0x0a+0x08 = compressed 8-bits + * 0x0a+0x0a = 10 bits + */ + reg_write(client, 0x0112, 0x08); + reg_write(client, 0x0113, 0x08); + + /* Base setting for High frame mode */ + reg_write(client, VNDMY_ABLMGSHLMT, 0x80); + reg_write(client, Y_OPBADDR_START_DI, 0x08); + reg_write(client, 0x3015, 0x37); + reg_write(client, 0x301C, 0x01); + reg_write(client, 0x302C, 0x05); + reg_write(client, 0x3031, 0x26); + reg_write(client, 0x3041, 0x60); + reg_write(client, 0x3051, 0x24); + reg_write(client, 0x3053, 0x34); + reg_write(client, 0x3057, 0xC0); + reg_write(client, 0x305C, 0x09); + reg_write(client, 0x305D, 0x07); + reg_write(client, 0x3060, 0x30); + reg_write(client, 0x3065, 0x00); + reg_write(client, 0x30AA, 0x08); + reg_write(client, 0x30AB, 0x1C); + reg_write(client, 0x30B0, 0x32); + reg_write(client, 0x30B2, 0x83); + reg_write(client, 0x30D3, 0x04); + reg_write(client, 0x3106, 0x78); + reg_write(client, 0x310C, 0x82); + reg_write(client, 0x3304, 0x05); + reg_write(client, 0x3305, 0x04); + reg_write(client, 0x3306, 0x11); + reg_write(client, 0x3307, 0x02); + reg_write(client, 0x3308, 0x0C); + reg_write(client, 0x3309, 0x06); + reg_write(client, 0x330A, 0x08); + reg_write(client, 0x330B, 0x04); + reg_write(client, 0x330C, 0x08); + reg_write(client, 0x330D, 0x06); + reg_write(client, 0x330E, 0x01); + reg_write(client, 0x3381, 0x00); + + /* V : 1/2V-addition (1,3), H : 1/2H-averaging (1,3) -> Full HD */ + /* 1608 = 1560 + 48 (black lines) */ + reg_write(client, FRAME_LENGTH_LINES_HI, 0x06); + reg_write(client, FRAME_LENGTH_LINES_LO, 0x48); + reg_write(client, YADDR_START, 0x00); + reg_write(client, YADDR_END, 0x2F); + /* 0x838 == 2104 */ + reg_write(client, X_OUTPUT_SIZE_MSB, 0x08); + reg_write(client, X_OUTPUT_SIZE_LSB, 0x38); + /* 0x618 == 1560 */ + reg_write(client, Y_OUTPUT_SIZE_MSB, 0x06); + reg_write(client, Y_OUTPUT_SIZE_LSB, 0x18); + reg_write(client, X_EVEN_INC, 0x01); + reg_write(client, X_ODD_INC, 0x03); + reg_write(client, Y_EVEN_INC, 0x01); + reg_write(client, Y_ODD_INC, 0x03); + reg_write(client, HMODEADD, 0x00); + reg_write(client, VMODEADD, 0x16); + reg_write(client, VAPPLINE_START, 0x24); + reg_write(client, VAPPLINE_END, 0x53); + reg_write(client, SHUTTER, 0x00); + reg_write(client, HADDAVE, 0x80); + + reg_write(client, LANESEL, 0x00); + + reg_write(client, GROUPED_PARAMETER_HOLD, 0x00); /* off */ + + return 0; +} + +static int imx074_probe(struct i2c_client *client, + const struct i2c_device_id *did) +{ + struct imx074 *priv; + struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); + struct soc_camera_link *icl = soc_camera_i2c_to_link(client); + int ret; + + if (!icl) { + dev_err(&client->dev, "IMX074: missing platform data!\n"); + return -EINVAL; + } + + if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { + dev_warn(&adapter->dev, + "I2C-Adapter doesn't support I2C_FUNC_SMBUS_BYTE\n"); + return -EIO; + } + + priv = kzalloc(sizeof(struct imx074), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + v4l2_i2c_subdev_init(&priv->subdev, client, &imx074_subdev_ops); + + priv->fmt = &imx074_colour_fmts[0]; + + ret = imx074_video_probe(client); + if (ret < 0) { + kfree(priv); + return ret; + } + + return ret; +} + +static int imx074_remove(struct i2c_client *client) +{ + struct imx074 *priv = to_imx074(client); + struct soc_camera_link *icl = soc_camera_i2c_to_link(client); + + if (icl->free_bus) + icl->free_bus(icl); + kfree(priv); + + return 0; +} + +static const struct i2c_device_id imx074_id[] = { + { "imx074", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, imx074_id); + +static struct i2c_driver imx074_i2c_driver = { + .driver = { + .name = "imx074", + }, + .probe = imx074_probe, + .remove = imx074_remove, + .id_table = imx074_id, +}; + +module_i2c_driver(imx074_i2c_driver); + +MODULE_DESCRIPTION("Sony IMX074 Camera driver"); +MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/media/i2c/soc_camera/mt9m001.c b/drivers/media/i2c/soc_camera/mt9m001.c new file mode 100644 index 000000000000..00583f5fd26b --- /dev/null +++ b/drivers/media/i2c/soc_camera/mt9m001.c @@ -0,0 +1,737 @@ +/* + * Driver for MT9M001 CMOS Image Sensor from Micron + * + * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.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 <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/v4l2-ctrls.h> + +/* + * mt9m001 i2c address 0x5d + * The platform has to define struct i2c_board_info objects and link to them + * from struct soc_camera_link + */ + +/* mt9m001 selected register addresses */ +#define MT9M001_CHIP_VERSION 0x00 +#define MT9M001_ROW_START 0x01 +#define MT9M001_COLUMN_START 0x02 +#define MT9M001_WINDOW_HEIGHT 0x03 +#define MT9M001_WINDOW_WIDTH 0x04 +#define MT9M001_HORIZONTAL_BLANKING 0x05 +#define MT9M001_VERTICAL_BLANKING 0x06 +#define MT9M001_OUTPUT_CONTROL 0x07 +#define MT9M001_SHUTTER_WIDTH 0x09 +#define MT9M001_FRAME_RESTART 0x0b +#define MT9M001_SHUTTER_DELAY 0x0c +#define MT9M001_RESET 0x0d +#define MT9M001_READ_OPTIONS1 0x1e +#define MT9M001_READ_OPTIONS2 0x20 +#define MT9M001_GLOBAL_GAIN 0x35 +#define MT9M001_CHIP_ENABLE 0xF1 + +#define MT9M001_MAX_WIDTH 1280 +#define MT9M001_MAX_HEIGHT 1024 +#define MT9M001_MIN_WIDTH 48 +#define MT9M001_MIN_HEIGHT 32 +#define MT9M001_COLUMN_SKIP 20 +#define MT9M001_ROW_SKIP 12 + +/* MT9M001 has only one fixed colorspace per pixelcode */ +struct mt9m001_datafmt { + enum v4l2_mbus_pixelcode code; + enum v4l2_colorspace colorspace; +}; + +/* Find a data format by a pixel code in an array */ +static const struct mt9m001_datafmt *mt9m001_find_datafmt( + enum v4l2_mbus_pixelcode code, const struct mt9m001_datafmt *fmt, + int n) +{ + int i; + for (i = 0; i < n; i++) + if (fmt[i].code == code) + return fmt + i; + + return NULL; +} + +static const struct mt9m001_datafmt mt9m001_colour_fmts[] = { + /* + * Order important: first natively supported, + * second supported with a GPIO extender + */ + {V4L2_MBUS_FMT_SBGGR10_1X10, V4L2_COLORSPACE_SRGB}, + {V4L2_MBUS_FMT_SBGGR8_1X8, V4L2_COLORSPACE_SRGB}, +}; + +static const struct mt9m001_datafmt mt9m001_monochrome_fmts[] = { + /* Order important - see above */ + {V4L2_MBUS_FMT_Y10_1X10, V4L2_COLORSPACE_JPEG}, + {V4L2_MBUS_FMT_Y8_1X8, V4L2_COLORSPACE_JPEG}, +}; + +struct mt9m001 { + struct v4l2_subdev subdev; + struct v4l2_ctrl_handler hdl; + struct { + /* exposure/auto-exposure cluster */ + struct v4l2_ctrl *autoexposure; + struct v4l2_ctrl *exposure; + }; + struct v4l2_rect rect; /* Sensor window */ + const struct mt9m001_datafmt *fmt; + const struct mt9m001_datafmt *fmts; + int num_fmts; + int model; /* V4L2_IDENT_MT9M001* codes from v4l2-chip-ident.h */ + unsigned int total_h; + unsigned short y_skip_top; /* Lines to skip at the top */ +}; + +static struct mt9m001 *to_mt9m001(const struct i2c_client *client) +{ + return container_of(i2c_get_clientdata(client), struct mt9m001, subdev); +} + +static int reg_read(struct i2c_client *client, const u8 reg) +{ + return i2c_smbus_read_word_swapped(client, reg); +} + +static int reg_write(struct i2c_client *client, const u8 reg, + const u16 data) +{ + return i2c_smbus_write_word_swapped(client, reg, data); +} + +static int reg_set(struct i2c_client *client, const u8 reg, + const u16 data) +{ + int ret; + + ret = reg_read(client, reg); + if (ret < 0) + return ret; + return reg_write(client, reg, ret | data); +} + +static int reg_clear(struct i2c_client *client, const u8 reg, + const u16 data) +{ + int ret; + + ret = reg_read(client, reg); + if (ret < 0) + return ret; + return reg_write(client, reg, ret & ~data); +} + +static int mt9m001_init(struct i2c_client *client) +{ + int ret; + + dev_dbg(&client->dev, "%s\n", __func__); + + /* + * We don't know, whether platform provides reset, issue a soft reset + * too. This returns all registers to their default values. + */ + ret = reg_write(client, MT9M001_RESET, 1); + if (!ret) + ret = reg_write(client, MT9M001_RESET, 0); + + /* Disable chip, synchronous option update */ + if (!ret) + ret = reg_write(client, MT9M001_OUTPUT_CONTROL, 0); + + return ret; +} + +static int mt9m001_s_stream(struct v4l2_subdev *sd, int enable) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + + /* Switch to master "normal" mode or stop sensor readout */ + if (reg_write(client, MT9M001_OUTPUT_CONTROL, enable ? 2 : 0) < 0) + return -EIO; + return 0; +} + +static int mt9m001_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct mt9m001 *mt9m001 = to_mt9m001(client); + struct v4l2_rect rect = a->c; + int ret; + const u16 hblank = 9, vblank = 25; + + if (mt9m001->fmts == mt9m001_colour_fmts) + /* + * Bayer format - even number of rows for simplicity, + * but let the user play with the top row. + */ + rect.height = ALIGN(rect.height, 2); + + /* Datasheet requirement: see register description */ + rect.width = ALIGN(rect.width, 2); + rect.left = ALIGN(rect.left, 2); + + soc_camera_limit_side(&rect.left, &rect.width, + MT9M001_COLUMN_SKIP, MT9M001_MIN_WIDTH, MT9M001_MAX_WIDTH); + + soc_camera_limit_side(&rect.top, &rect.height, + MT9M001_ROW_SKIP, MT9M001_MIN_HEIGHT, MT9M001_MAX_HEIGHT); + + mt9m001->total_h = rect.height + mt9m001->y_skip_top + vblank; + + /* Blanking and start values - default... */ + ret = reg_write(client, MT9M001_HORIZONTAL_BLANKING, hblank); + if (!ret) + ret = reg_write(client, MT9M001_VERTICAL_BLANKING, vblank); + + /* + * The caller provides a supported format, as verified per + * call to .try_mbus_fmt() + */ + if (!ret) + ret = reg_write(client, MT9M001_COLUMN_START, rect.left); + if (!ret) + ret = reg_write(client, MT9M001_ROW_START, rect.top); + if (!ret) + ret = reg_write(client, MT9M001_WINDOW_WIDTH, rect.width - 1); + if (!ret) + ret = reg_write(client, MT9M001_WINDOW_HEIGHT, + rect.height + mt9m001->y_skip_top - 1); + if (!ret && v4l2_ctrl_g_ctrl(mt9m001->autoexposure) == V4L2_EXPOSURE_AUTO) + ret = reg_write(client, MT9M001_SHUTTER_WIDTH, mt9m001->total_h); + + if (!ret) + mt9m001->rect = rect; + + return ret; +} + +static int mt9m001_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct mt9m001 *mt9m001 = to_mt9m001(client); + + a->c = mt9m001->rect; + a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + + return 0; +} + +static int mt9m001_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a) +{ + a->bounds.left = MT9M001_COLUMN_SKIP; + a->bounds.top = MT9M001_ROW_SKIP; + a->bounds.width = MT9M001_MAX_WIDTH; + a->bounds.height = MT9M001_MAX_HEIGHT; + a->defrect = a->bounds; + a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + a->pixelaspect.numerator = 1; + a->pixelaspect.denominator = 1; + + return 0; +} + +static int mt9m001_g_fmt(struct v4l2_subdev *sd, + struct v4l2_mbus_framefmt *mf) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct mt9m001 *mt9m001 = to_mt9m001(client); + + mf->width = mt9m001->rect.width; + mf->height = mt9m001->rect.height; + mf->code = mt9m001->fmt->code; + mf->colorspace = mt9m001->fmt->colorspace; + mf->field = V4L2_FIELD_NONE; + + return 0; +} + +static int mt9m001_s_fmt(struct v4l2_subdev *sd, + struct v4l2_mbus_framefmt *mf) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct mt9m001 *mt9m001 = to_mt9m001(client); + struct v4l2_crop a = { + .c = { + .left = mt9m001->rect.left, + .top = mt9m001->rect.top, + .width = mf->width, + .height = mf->height, + }, + }; + int ret; + + /* No support for scaling so far, just crop. TODO: use skipping */ + ret = mt9m001_s_crop(sd, &a); + if (!ret) { + mf->width = mt9m001->rect.width; + mf->height = mt9m001->rect.height; + mt9m001->fmt = mt9m001_find_datafmt(mf->code, + mt9m001->fmts, mt9m001->num_fmts); + mf->colorspace = mt9m001->fmt->colorspace; + } + + return ret; +} + +static int mt9m001_try_fmt(struct v4l2_subdev *sd, + struct v4l2_mbus_framefmt *mf) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct mt9m001 *mt9m001 = to_mt9m001(client); + const struct mt9m001_datafmt *fmt; + + v4l_bound_align_image(&mf->width, MT9M001_MIN_WIDTH, + MT9M001_MAX_WIDTH, 1, + &mf->height, MT9M001_MIN_HEIGHT + mt9m001->y_skip_top, + MT9M001_MAX_HEIGHT + mt9m001->y_skip_top, 0, 0); + + if (mt9m001->fmts == mt9m001_colour_fmts) + mf->height = ALIGN(mf->height - 1, 2); + + fmt = mt9m001_find_datafmt(mf->code, mt9m001->fmts, + mt9m001->num_fmts); + if (!fmt) { + fmt = mt9m001->fmt; + mf->code = fmt->code; + } + + mf->colorspace = fmt->colorspace; + + return 0; +} + +static int mt9m001_g_chip_ident(struct v4l2_subdev *sd, + struct v4l2_dbg_chip_ident *id) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct mt9m001 *mt9m001 = to_mt9m001(client); + + if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR) + return -EINVAL; + + if (id->match.addr != client->addr) + return -ENODEV; + + id->ident = mt9m001->model; + id->revision = 0; + + return 0; +} + +#ifdef CONFIG_VIDEO_ADV_DEBUG +static int mt9m001_g_register(struct v4l2_subdev *sd, + struct v4l2_dbg_register *reg) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + + if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff) + return -EINVAL; + + if (reg->match.addr != client->addr) + return -ENODEV; + + reg->size = 2; + reg->val = reg_read(client, reg->reg); + + if (reg->val > 0xffff) + return -EIO; + + return 0; +} + +static int mt9m001_s_register(struct v4l2_subdev *sd, + struct v4l2_dbg_register *reg) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + + if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff) + return -EINVAL; + + if (reg->match.addr != client->addr) + return -ENODEV; + + if (reg_write(client, reg->reg, reg->val) < 0) + return -EIO; + + return 0; +} +#endif + +static int mt9m001_g_volatile_ctrl(struct v4l2_ctrl *ctrl) + |