+++ /dev/null
-/*
- * 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/drv-intf/soc_mediabus.h>
-#include <media/v4l2-clk.h>
-#include <media/v4l2-subdev.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_host_desc
- */
-
-/* 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 {
- u32 code;
- enum v4l2_colorspace colorspace;
-};
-
-/* Find a data format by a pixel code in an array */
-static const struct mt9m001_datafmt *mt9m001_find_datafmt(
- u32 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
- */
- {MEDIA_BUS_FMT_SBGGR10_1X10, V4L2_COLORSPACE_SRGB},
- {MEDIA_BUS_FMT_SBGGR8_1X8, V4L2_COLORSPACE_SRGB},
-};
-
-static const struct mt9m001_datafmt mt9m001_monochrome_fmts[] = {
- /* Order important - see above */
- {MEDIA_BUS_FMT_Y10_1X10, V4L2_COLORSPACE_JPEG},
- {MEDIA_BUS_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 */
- struct v4l2_clk *clk;
- const struct mt9m001_datafmt *fmt;
- const struct mt9m001_datafmt *fmts;
- int num_fmts;
- 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_set_selection(struct v4l2_subdev *sd,
- struct v4l2_subdev_pad_config *cfg,
- struct v4l2_subdev_selection *sel)
-{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- struct mt9m001 *mt9m001 = to_mt9m001(client);
- struct v4l2_rect rect = sel->r;
- const u16 hblank = 9, vblank = 25;
- int ret;
-
- if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE ||
- sel->target != V4L2_SEL_TGT_CROP)
- return -EINVAL;
-
- 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 .set_fmt(FORMAT_TRY).
- */
- 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_get_selection(struct v4l2_subdev *sd,
- struct v4l2_subdev_pad_config *cfg,
- struct v4l2_subdev_selection *sel)
-{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- struct mt9m001 *mt9m001 = to_mt9m001(client);
-
- if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE)
- return -EINVAL;
-
- switch (sel->target) {
- case V4L2_SEL_TGT_CROP_BOUNDS:
- sel->r.left = MT9M001_COLUMN_SKIP;
- sel->r.top = MT9M001_ROW_SKIP;
- sel->r.width = MT9M001_MAX_WIDTH;
- sel->r.height = MT9M001_MAX_HEIGHT;
- return 0;
- case V4L2_SEL_TGT_CROP:
- sel->r = mt9m001->rect;
- return 0;
- default:
- return -EINVAL;
- }
-}
-
-static int mt9m001_get_fmt(struct v4l2_subdev *sd,
- struct v4l2_subdev_pad_config *cfg,
- struct v4l2_subdev_format *format)
-{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- struct mt9m001 *mt9m001 = to_mt9m001(client);
- struct v4l2_mbus_framefmt *mf = &format->format;
-
- if (format->pad)
- return -EINVAL;
-
- 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,
- const struct mt9m001_datafmt *fmt,
- struct v4l2_mbus_framefmt *mf)
-{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- struct mt9m001 *mt9m001 = to_mt9m001(client);
- struct v4l2_subdev_selection sel = {
- .which = V4L2_SUBDEV_FORMAT_ACTIVE,
- .target = V4L2_SEL_TGT_CROP,
- .r.left = mt9m001->rect.left,
- .r.top = mt9m001->rect.top,
- .r.width = mf->width,
- .r.height = mf->height,
- };
- int ret;
-
- /* No support for scaling so far, just crop. TODO: use skipping */
- ret = mt9m001_set_selection(sd, NULL, &sel);
- if (!ret) {
- mf->width = mt9m001->rect.width;
- mf->height = mt9m001->rect.height;
- mt9m001->fmt = fmt;
- mf->colorspace = fmt->colorspace;
- }
-
- return ret;
-}
-
-static int mt9m001_set_fmt(struct v4l2_subdev *sd,
- struct v4l2_subdev_pad_config *cfg,
- struct v4l2_subdev_format *format)
-{
- struct v4l2_mbus_framefmt *mf = &format->format;
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- struct mt9m001 *mt9m001 = to_mt9m001(client);
- const struct mt9m001_datafmt *fmt;
-
- if (format->pad)
- return -EINVAL;
-
- 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;
-
- if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE)
- return mt9m001_s_fmt(sd, fmt, mf);
- cfg->try_fmt = *mf;
- 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->reg > 0xff)
- return -EINVAL;
-
- 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,
- const struct v4l2_dbg_register *reg)
-{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
-
- if (reg->reg > 0xff)
- return -EINVAL;
-
- if (reg_write(client, reg->reg, reg->val) < 0)
- return -EIO;
-
- return 0;
-}
-#endif
-
-static int mt9m001_s_power(struct v4l2_subdev *sd, int on)
-{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
- struct mt9m001 *mt9m001 = to_mt9m001(client);
-
- return soc_camera_set_power(&client->dev, ssdd, mt9m001->clk, on);
-}
-
-static int mt9m001_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
-{
- struct mt9m001 *mt9m001 = container_of(ctrl->handler,
- struct mt9m001, hdl);
- s32 min, max;
-
- switch (ctrl->id) {
- case V4L2_CID_EXPOSURE_AUTO:
- min = mt9m001->exposure->minimum;
- max = mt9m001->exposure->maximum;
- mt9m001->exposure->val =
- (524 + (mt9m001->total_h - 1) * (max - min)) / 1048 + min;
- break;
- }
- return 0;
-}
-
-static int mt9m001_s_ctrl(struct v4l2_ctrl *ctrl)
-{
- struct mt9m001 *mt9m001 = container_of(ctrl->handler,
- struct mt9m001, hdl);
- struct v4l2_subdev *sd = &mt9m001->subdev;
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- struct v4l2_ctrl *exp = mt9m001->exposure;
- int data;
-
- switch (ctrl->id) {
- case V4L2_CID_VFLIP:
- if (ctrl->val)
- data = reg_set(client, MT9M001_READ_OPTIONS2, 0x8000);
- else
- data = reg_clear(client, MT9M001_READ_OPTIONS2, 0x8000);
- if (data < 0)
- return -EIO;
- return 0;
-
- case V4L2_CID_GAIN:
- /* See Datasheet Table 7, Gain settings. */
- if (ctrl->val <= ctrl->default_value) {
- /* Pack it into 0..1 step 0.125, register values 0..8 */
- unsigned long range = ctrl->default_value - ctrl->minimum;
- data = ((ctrl->val - (s32)ctrl->minimum) * 8 + range / 2) / range;
-
- dev_dbg(&client->dev, "Setting gain %d\n", data);
- data = reg_write(client, MT9M001_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 = ctrl->maximum - ctrl->default_value - 1;
- unsigned long gain = ((ctrl->val - (s32)ctrl->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(&client->dev, "Setting gain from %d to %d\n",
- reg_read(client, MT9M001_GLOBAL_GAIN), data);
- data = reg_write(client, MT9M001_GLOBAL_GAIN, data);
- if (data < 0)
- return -EIO;
- }
- return 0;
-
- case V4L2_CID_EXPOSURE_AUTO:
- if (ctrl->val == V4L2_EXPOSURE_MANUAL) {
- unsigned long range = exp->maximum - exp->minimum;
- unsigned long shutter = ((exp->val - (s32)exp->minimum) * 1048 +
- range / 2) / range + 1;
-
- dev_dbg(&client->dev,
- "Setting shutter width from %d to %lu\n",
- reg_read(client, MT9M001_SHUTTER_WIDTH), shutter);
- if (reg_write(client, MT9M001_SHUTTER_WIDTH, shutter) < 0)
- return -EIO;
- } else {
- const u16 vblank = 25;
-
- mt9m001->total_h = mt9m001->rect.height +
- mt9m001->y_skip_top + vblank;
- if (reg_write(client, MT9M001_SHUTTER_WIDTH, mt9m001->total_h) < 0)
- return -EIO;
- }
- 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 mt9m001_video_probe(struct soc_camera_subdev_desc *ssdd,
- struct i2c_client *client)
-{
- struct mt9m001 *mt9m001 = to_mt9m001(client);
- s32 data;
- unsigned long flags;
- int ret;
-
- ret = mt9m001_s_power(&mt9m001->subdev, 1);
- if (ret < 0)
- return ret;
-
- /* Enable the chip */
- data = reg_write(client, MT9M001_CHIP_ENABLE, 1);
- dev_dbg(&client->dev, "write: %d\n", data);
-
- /* Read out the chip version register */
- data = reg_read(client, MT9M001_CHIP_VERSION);
-
- /* must be 0x8411 or 0x8421 for colour sensor and 8431 for bw */
- switch (data) {
- case 0x8411:
- case 0x8421:
- mt9m001->fmts = mt9m001_colour_fmts;
- break;
- case 0x8431:
- mt9m001->fmts = mt9m001_monochrome_fmts;
- break;
- default:
- dev_err(&client->dev,
- "No MT9M001 chip detected, register read %x\n", data);
- ret = -ENODEV;
- goto done;
- }
-
- mt9m001->num_fmts = 0;
-
- /*
- * This is a 10bit sensor, so by default we only allow 10bit.
- * The platform may support different bus widths due to
- * different routing of the data lines.
- */
- if (ssdd->query_bus_param)
- flags = ssdd->query_bus_param(ssdd);
- else
- flags = SOCAM_DATAWIDTH_10;
-
- if (flags & SOCAM_DATAWIDTH_10)
- mt9m001->num_fmts++;
- else
- mt9m001->fmts++;
-
- if (flags & SOCAM_DATAWIDTH_8)
- mt9m001->num_fmts++;
-
- mt9m001->fmt = &mt9m001->fmts[0];
-
- dev_info(&client->dev, "Detected a MT9M001 chip ID %x (%s)\n", data,
- data == 0x8431 ? "C12STM" : "C12ST");
-
- ret = mt9m001_init(client);
- if (ret < 0) {
- dev_err(&client->dev, "Failed to initialise the camera\n");
- goto done;
- }
-
- /* mt9m001_init() has reset the chip, returning registers to defaults */
- ret = v4l2_ctrl_handler_setup(&mt9m001->hdl);
-
-done:
- mt9m001_s_power(&mt9m001->subdev, 0);
- return ret;
-}
-
-static void mt9m001_video_remove(struct soc_camera_subdev_desc *ssdd)
-{
- if (ssdd->free_bus)
- ssdd->free_bus(ssdd);
-}
-
-static int mt9m001_g_skip_top_lines(struct v4l2_subdev *sd, u32 *lines)
-{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- struct mt9m001 *mt9m001 = to_mt9m001(client);
-
- *lines = mt9m001->y_skip_top;
-
- return 0;
-}
-
-static const struct v4l2_ctrl_ops mt9m001_ctrl_ops = {
- .g_volatile_ctrl = mt9m001_g_volatile_ctrl,
- .s_ctrl = mt9m001_s_ctrl,
-};
-
-static const struct v4l2_subdev_core_ops mt9m001_subdev_core_ops = {
-#ifdef CONFIG_VIDEO_ADV_DEBUG
- .g_register = mt9m001_g_register,
- .s_register = mt9m001_s_register,
-#endif
- .s_power = mt9m001_s_power,
-};
-
-static int mt9m001_enum_mbus_code(struct v4l2_subdev *sd,
- struct v4l2_subdev_pad_config *cfg,
- struct v4l2_subdev_mbus_code_enum *code)
-{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- struct mt9m001 *mt9m001 = to_mt9m001(client);
-
- if (code->pad || code->index >= mt9m001->num_fmts)
- return -EINVAL;
-
- code->code = mt9m001->fmts[code->index].code;
- return 0;
-}
-
-static int mt9m001_g_mbus_config(struct v4l2_subdev *sd,
- struct v4l2_mbus_config *cfg)
-{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
-
- /* MT9M001 has all capture_format parameters fixed */
- cfg->flags = V4L2_MBUS_PCLK_SAMPLE_FALLING |
- V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_HIGH |
- V4L2_MBUS_DATA_ACTIVE_HIGH | V4L2_MBUS_MASTER;
- cfg->type = V4L2_MBUS_PARALLEL;
- cfg->flags = soc_camera_apply_board_flags(ssdd, cfg);
-
- return 0;
-}
-
-static int mt9m001_s_mbus_config(struct v4l2_subdev *sd,
- const struct v4l2_mbus_config *cfg)
-{
- const struct i2c_client *client = v4l2_get_subdevdata(sd);
- struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
- struct mt9m001 *mt9m001 = to_mt9m001(client);
- unsigned int bps = soc_mbus_get_fmtdesc(mt9m001->fmt->code)->bits_per_sample;
-
- if (ssdd->set_bus_param)
- return ssdd->set_bus_param(ssdd, 1 << (bps - 1));
-
- /*
- * Without board specific bus width settings we only support the
- * sensors native bus width
- */
- return bps == 10 ? 0 : -EINVAL;
-}
-
-static const struct v4l2_subdev_video_ops mt9m001_subdev_video_ops = {
- .s_stream = mt9m001_s_stream,
- .g_mbus_config = mt9m001_g_mbus_config,
- .s_mbus_config = mt9m001_s_mbus_config,
-};
-
-static const struct v4l2_subdev_sensor_ops mt9m001_subdev_sensor_ops = {
- .g_skip_top_lines = mt9m001_g_skip_top_lines,
-};
-
-static const struct v4l2_subdev_pad_ops mt9m001_subdev_pad_ops = {
- .enum_mbus_code = mt9m001_enum_mbus_code,
- .get_selection = mt9m001_get_selection,
- .set_selection = mt9m001_set_selection,
- .get_fmt = mt9m001_get_fmt,
- .set_fmt = mt9m001_set_fmt,
-};
-
-static const struct v4l2_subdev_ops mt9m001_subdev_ops = {
- .core = &mt9m001_subdev_core_ops,
- .video = &mt9m001_subdev_video_ops,
- .sensor = &mt9m001_subdev_sensor_ops,
- .pad = &mt9m001_subdev_pad_ops,
-};
-
-static int mt9m001_probe(struct i2c_client *client,
- const struct i2c_device_id *did)
-{
- struct mt9m001 *mt9m001;
- struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
- struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
- int ret;
-
- if (!ssdd) {
- dev_err(&client->dev, "MT9M001 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;
- }
-
- mt9m001 = devm_kzalloc(&client->dev, sizeof(struct mt9m001), GFP_KERNEL);
- if (!mt9m001)
- return -ENOMEM;
-
- v4l2_i2c_subdev_init(&mt9m001->subdev, client, &mt9m001_subdev_ops);
- v4l2_ctrl_handler_init(&mt9m001->hdl, 4);
- v4l2_ctrl_new_std(&mt9m001->hdl, &mt9m001_ctrl_ops,
- V4L2_CID_VFLIP, 0, 1, 1, 0);
- v4l2_ctrl_new_std(&mt9m001->hdl, &mt9m001_ctrl_ops,
- V4L2_CID_GAIN, 0, 127, 1, 64);
- mt9m001->exposure = v4l2_ctrl_new_std(&mt9m001->hdl, &mt9m001_ctrl_ops,
- V4L2_CID_EXPOSURE, 1, 255, 1, 255);
- /*
- * Simulated autoexposure. If enabled, we calculate shutter width
- * ourselves in the driver based on vertical blanking and frame width
- */
- mt9m001->autoexposure = v4l2_ctrl_new_std_menu(&mt9m001->hdl,
- &mt9m001_ctrl_ops, V4L2_CID_EXPOSURE_AUTO, 1, 0,
- V4L2_EXPOSURE_AUTO);
- mt9m001->subdev.ctrl_handler = &mt9m001->hdl;
- if (mt9m001->hdl.error)
- return mt9m001->hdl.error;
-
- v4l2_ctrl_auto_cluster(2, &mt9m001->autoexposure,
- V4L2_EXPOSURE_MANUAL, true);
-
- /* Second stage probe - when a capture adapter is there */
- mt9m001->y_skip_top = 0;
- mt9m001->rect.left = MT9M001_COLUMN_SKIP;
- mt9m001->rect.top = MT9M001_ROW_SKIP;
- mt9m001->rect.width = MT9M001_MAX_WIDTH;
- mt9m001->rect.height = MT9M001_MAX_HEIGHT;
-
- mt9m001->clk = v4l2_clk_get(&client->dev, "mclk");
- if (IS_ERR(mt9m001->clk)) {
- ret = PTR_ERR(mt9m001->clk);
- goto eclkget;
- }
-
- ret = mt9m001_video_probe(ssdd, client);
- if (ret) {
- v4l2_clk_put(mt9m001->clk);
-eclkget:
- v4l2_ctrl_handler_free(&mt9m001->hdl);
- }
-
- return ret;
-}
-
-static int mt9m001_remove(struct i2c_client *client)
-{
- struct mt9m001 *mt9m001 = to_mt9m001(client);
- struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
-
- v4l2_clk_put(mt9m001->clk);
- v4l2_device_unregister_subdev(&mt9m001->subdev);
- v4l2_ctrl_handler_free(&mt9m001->hdl);
- mt9m001_video_remove(ssdd);
-
- return 0;
-}
-
-static const struct i2c_device_id mt9m001_id[] = {
- { "mt9m001", 0 },
- { }
-};
-MODULE_DEVICE_TABLE(i2c, mt9m001_id);
-
-static struct i2c_driver mt9m001_i2c_driver = {
- .driver = {
- .name = "mt9m001",
- },
- .probe = mt9m001_probe,
- .remove = mt9m001_remove,
- .id_table = mt9m001_id,
-};
-
-module_i2c_driver(mt9m001_i2c_driver);
-
-MODULE_DESCRIPTION("Micron MT9M001 Camera driver");
-MODULE_AUTHOR("Guennadi Liakhovetski <kernel@pengutronix.de>");
-MODULE_LICENSE("GPL");
projects / linux.git / commitdiff