This driver is unused and depends on the deprecated soc-camera framework.
Move it to staging in preparation for being removed unless someone does
the work to convert it to a proper V4L2 subdev driver.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This is the legacy configuration which shouldn't be used anymore,
while VIDEO_MT9M111 should be used instead.
-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
# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_SOC_CAMERA_MT9M001) += mt9m001.o
-obj-$(CONFIG_SOC_CAMERA_MT9T031) += mt9t031.o
obj-$(CONFIG_SOC_CAMERA_MT9T112) += mt9t112.o
obj-$(CONFIG_SOC_CAMERA_MT9V022) += mt9v022.o
obj-$(CONFIG_SOC_CAMERA_OV5642) += ov5642.o
+++ /dev/null
-/*
- * 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/device.h>
-#include <linux/i2c.h>
-#include <linux/log2.h>
-#include <linux/pm.h>
-#include <linux/slab.h>
-#include <linux/v4l2-mediabus.h>
-#include <linux/videodev2.h>
-#include <linux/module.h>
-
-#include <media/soc_camera.h>
-#include <media/v4l2-clk.h>
-#include <media/v4l2-subdev.h>
-#include <media/v4l2-ctrls.h>
-
-/*
- * ATTENTION: this driver still cannot be used outside of the soc-camera
- * framework because of its PM implementation, using the video_device node.
- * If hardware becomes available for testing, alternative PM approaches shall
- * be considered and tested.
- */
-
-/*
- * mt9t031 i2c address 0x5d
- * The platform has to define struct i2c_board_info objects and link to them
- * from struct soc_camera_host_desc
- */
-
-/* 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 18
-#define MT9T031_HORIZONTAL_BLANK 142
-#define MT9T031_VERTICAL_BLANK 25
-#define MT9T031_COLUMN_SKIP 32
-#define MT9T031_ROW_SKIP 20
-
-struct mt9t031 {
- 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;
- u16 xskip;
- u16 yskip;
- unsigned int total_h;
- unsigned short y_skip_top; /* Lines to skip at the top */
-};
-
-static struct mt9t031 *to_mt9t031(const struct i2c_client *client)
-{
- return container_of(i2c_get_clientdata(client), struct mt9t031, 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 set_shutter(struct i2c_client *client, const u32 data)
-{
- int ret;
-
- ret = reg_write(client, MT9T031_SHUTTER_WIDTH_UPPER, data >> 16);
-
- if (ret >= 0)
- ret = reg_write(client, MT9T031_SHUTTER_WIDTH, data & 0xffff);
-
- return ret;
-}
-
-static int get_shutter(struct i2c_client *client, u32 *data)
-{
- int ret;
-
- ret = reg_read(client, MT9T031_SHUTTER_WIDTH_UPPER);
- *data = ret << 16;
-
- if (ret >= 0)
- ret = reg_read(client, MT9T031_SHUTTER_WIDTH);
- *data |= ret & 0xffff;
-
- return ret < 0 ? ret : 0;
-}
-
-static int mt9t031_idle(struct i2c_client *client)
-{
- int ret;
-
- /* Disable chip output, synchronous option update */
- ret = reg_write(client, MT9T031_RESET, 1);
- if (ret >= 0)
- ret = reg_write(client, MT9T031_RESET, 0);
- if (ret >= 0)
- ret = reg_clear(client, MT9T031_OUTPUT_CONTROL, 2);
-
- return ret >= 0 ? 0 : -EIO;
-}
-
-static int mt9t031_s_stream(struct v4l2_subdev *sd, int enable)
-{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- int ret;
-
- if (enable)
- /* Switch to master "normal" mode */
- ret = reg_set(client, MT9T031_OUTPUT_CONTROL, 2);
- else
- /* Stop sensor readout */
- ret = reg_clear(client, MT9T031_OUTPUT_CONTROL, 2);
-
- if (ret < 0)
- return -EIO;
-
- return 0;
-}
-
-/* target must be _even_ */
-static u16 mt9t031_skip(s32 *source, s32 target, s32 max)
-{
- unsigned int skip;
-
- if (*source < target + target / 2) {
- *source = target;
- return 1;
- }
-
- skip = min(max, *source + target / 2) / target;
- if (skip > 8)
- skip = 8;
- *source = target * skip;
-
- return skip;
-}
-
-/* rect is the sensor rectangle, the caller guarantees parameter validity */
-static int mt9t031_set_params(struct i2c_client *client,
- struct v4l2_rect *rect, u16 xskip, u16 yskip)
-{
- struct mt9t031 *mt9t031 = to_mt9t031(client);
- int ret;
- u16 xbin, ybin;
- const u16 hblank = MT9T031_HORIZONTAL_BLANK,
- vblank = MT9T031_VERTICAL_BLANK;
-
- xbin = min(xskip, (u16)3);
- ybin = min(yskip, (u16)3);
-
- /*
- * Could just do roundup(rect->left, [xy]bin * 2); but this is cheaper.
- * There is always a valid suitably aligned value. The worst case is
- * xbin = 3, width = 2048. Then we will start at 36, the last read out
- * pixel will be 2083, which is < 2085 - first black pixel.
- *
- * MT9T031 datasheet imposes window left border alignment, depending on
- * the selected xskip. Failing to conform to this requirement produces
- * dark horizontal stripes in the image. However, even obeying to this
- * requirement doesn't eliminate the stripes in all configurations. They
- * appear "locally reproducibly," but can differ between tests under
- * different lighting conditions.
- */
- switch (xbin) {
- case 1:
- rect->left &= ~1;
- break;
- case 2:
- rect->left &= ~3;
- break;
- case 3:
- rect->left = rect->left > roundup(MT9T031_COLUMN_SKIP, 6) ?
- (rect->left / 6) * 6 : roundup(MT9T031_COLUMN_SKIP, 6);
- }
-
- rect->top &= ~1;
-
- dev_dbg(&client->dev, "skip %u:%u, rect %ux%u@%u:%u\n",
- xskip, yskip, rect->width, rect->height, rect->left, rect->top);
-
- /* Disable register update, reconfigure atomically */
- ret = reg_set(client, MT9T031_OUTPUT_CONTROL, 1);
- if (ret < 0)
- return ret;
-
- /* Blanking and start values - default... */
- ret = reg_write(client, MT9T031_HORIZONTAL_BLANKING, hblank);
- if (ret >= 0)
- ret = reg_write(client, MT9T031_VERTICAL_BLANKING, vblank);
-
- if (yskip != mt9t031->yskip || xskip != mt9t031->xskip) {
- /* Binning, skipping */
- if (ret >= 0)
- ret = reg_write(client, MT9T031_COLUMN_ADDRESS_MODE,
- ((xbin - 1) << 4) | (xskip - 1));
- if (ret >= 0)
- ret = reg_write(client, MT9T031_ROW_ADDRESS_MODE,
- ((ybin - 1) << 4) | (yskip - 1));
- }
- dev_dbg(&client->dev, "new physical left %u, top %u\n",
- rect->left, rect->top);
-
- /*
- * The caller provides a supported format, as guaranteed by
- * .set_fmt(FORMAT_TRY), soc_camera_s_selection() and soc_camera_cropcap()
- */
- if (ret >= 0)
- ret = reg_write(client, MT9T031_COLUMN_START, rect->left);
- if (ret >= 0)
- ret = reg_write(client, MT9T031_ROW_START, rect->top);
- if (ret >= 0)
- ret = reg_write(client, MT9T031_WINDOW_WIDTH, rect->width - 1);
- if (ret >= 0)
- ret = reg_write(client, MT9T031_WINDOW_HEIGHT,
- rect->height + mt9t031->y_skip_top - 1);
- if (ret >= 0 && v4l2_ctrl_g_ctrl(mt9t031->autoexposure) == V4L2_EXPOSURE_AUTO) {
- mt9t031->total_h = rect->height + mt9t031->y_skip_top + vblank;
-
- ret = set_shutter(client, mt9t031->total_h);
- }
-
- /* Re-enable register update, commit all changes */
- if (ret >= 0)
- ret = reg_clear(client, MT9T031_OUTPUT_CONTROL, 1);
-
- if (ret >= 0) {
- mt9t031->rect = *rect;
- mt9t031->xskip = xskip;
- mt9t031->yskip = yskip;
- }
-
- return ret < 0 ? ret : 0;
-}
-
-static int mt9t031_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 mt9t031 *mt9t031 = to_mt9t031(client);
- struct v4l2_rect rect = sel->r;
-
- if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE ||
- sel->target != V4L2_SEL_TGT_CROP)
- return -EINVAL;
-
- rect.width = ALIGN(rect.width, 2);
- rect.height = ALIGN(rect.height, 2);
-
- soc_camera_limit_side(&rect.left, &rect.width,
- MT9T031_COLUMN_SKIP, MT9T031_MIN_WIDTH, MT9T031_MAX_WIDTH);
-
- soc_camera_limit_side(&rect.top, &rect.height,
- MT9T031_ROW_SKIP, MT9T031_MIN_HEIGHT, MT9T031_MAX_HEIGHT);
-
- return mt9t031_set_params(client, &rect, mt9t031->xskip, mt9t031->yskip);
-}
-
-static int mt9t031_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 mt9t031 *mt9t031 = to_mt9t031(client);
-
- if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE)
- return -EINVAL;
-
- switch (sel->target) {
- case V4L2_SEL_TGT_CROP_BOUNDS:
- case V4L2_SEL_TGT_CROP_DEFAULT:
- sel->r.left = MT9T031_COLUMN_SKIP;
- sel->r.top = MT9T031_ROW_SKIP;
- sel->r.width = MT9T031_MAX_WIDTH;
- sel->r.height = MT9T031_MAX_HEIGHT;
- return 0;
- case V4L2_SEL_TGT_CROP:
- sel->r = mt9t031->rect;
- return 0;
- default:
- return -EINVAL;
- }
-}
-
-static int mt9t031_get_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 mt9t031 *mt9t031 = to_mt9t031(client);
-
- if (format->pad)
- return -EINVAL;
-
- mf->width = mt9t031->rect.width / mt9t031->xskip;
- mf->height = mt9t031->rect.height / mt9t031->yskip;
- mf->code = MEDIA_BUS_FMT_SBGGR10_1X10;
- mf->colorspace = V4L2_COLORSPACE_SRGB;
- mf->field = V4L2_FIELD_NONE;
-
- return 0;
-}
-
-/*
- * If a user window larger than sensor window is requested, we'll increase the
- * sensor window.
- */
-static int mt9t031_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 mt9t031 *mt9t031 = to_mt9t031(client);
- u16 xskip, yskip;
- struct v4l2_rect rect = mt9t031->rect;
-
- if (format->pad)
- return -EINVAL;
-
- mf->code = MEDIA_BUS_FMT_SBGGR10_1X10;
- mf->colorspace = V4L2_COLORSPACE_SRGB;
- v4l_bound_align_image(
- &mf->width, MT9T031_MIN_WIDTH, MT9T031_MAX_WIDTH, 1,
- &mf->height, MT9T031_MIN_HEIGHT, MT9T031_MAX_HEIGHT, 1, 0);
-
- if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
- cfg->try_fmt = *mf;
- return 0;
- }
-
- /*
- * Width and height are within limits.
- * S_FMT: use binning and skipping for scaling
- */
- xskip = mt9t031_skip(&rect.width, mf->width, MT9T031_MAX_WIDTH);
- yskip = mt9t031_skip(&rect.height, mf->height, MT9T031_MAX_HEIGHT);
-
- mf->code = MEDIA_BUS_FMT_SBGGR10_1X10;
- mf->colorspace = V4L2_COLORSPACE_SRGB;
-
- /* mt9t031_set_params() doesn't change width and height */
- return mt9t031_set_params(client, &rect, xskip, yskip);
-}
-
-#ifdef CONFIG_VIDEO_ADV_DEBUG
-static int mt9t031_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 = 1;
- reg->val = reg_read(client, reg->reg);
-
- if (reg->val > 0xffff)
- return -EIO;
-
- return 0;
-}
-
-static int mt9t031_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 mt9t031_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
-{
- struct mt9t031 *mt9t031 = container_of(ctrl->handler,
- struct mt9t031, hdl);
- const u32 shutter_max = MT9T031_MAX_HEIGHT + MT9T031_VERTICAL_BLANK;
- s32 min, max;
-
- switch (ctrl->id) {
- case V4L2_CID_EXPOSURE_AUTO:
- min = mt9t031->exposure->minimum;
- max = mt9t031->exposure->maximum;
- mt9t031->exposure->val =
- (shutter_max / 2 + (mt9t031->total_h - 1) * (max - min))
- / shutter_max + min;
- break;
- }
- return 0;
-}
-
-static int mt9t031_s_ctrl(struct v4l2_ctrl *ctrl)
-{
- struct mt9t031 *mt9t031 = container_of(ctrl->handler,
- struct mt9t031, hdl);
- struct v4l2_subdev *sd = &mt9t031->subdev;
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- struct v4l2_ctrl *exp = mt9t031->exposure;
- int data;
-
- switch (ctrl->id) {
- case V4L2_CID_VFLIP:
- if (ctrl->val)
- data = reg_set(client, MT9T031_READ_MODE_2, 0x8000);
- else
- data = reg_clear(client, MT9T031_READ_MODE_2, 0x8000);
- if (data < 0)
- return -EIO;
- return 0;
- case V4L2_CID_HFLIP:
- if (ctrl->val)
- data = reg_set(client, MT9T031_READ_MODE_2, 0x4000);
- else
- data = reg_clear(client, MT9T031_READ_MODE_2, 0x4000);
- 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, MT9T031_GLOBAL_GAIN, data);
- if (data < 0)
- return -EIO;
- } else {
- /* Pack it into 1.125..128 variable step, register values 9..0x7860 */
- /* We assume qctrl->maximum - qctrl->default_value - 1 > 0 */
- unsigned long range = ctrl->maximum - ctrl->default_value - 1;
- /* calculated gain: map 65..127 to 9..1024 step 0.125 */
- unsigned long gain = ((ctrl->val - (s32)ctrl->default_value - 1) *
- 1015 + range / 2) / range + 9;
-
- if (gain <= 32) /* calculated gain 9..32 -> 9..32 */
- data = gain;
- else if (gain <= 64) /* calculated gain 33..64 -> 0x51..0x60 */
- data = ((gain - 32) * 16 + 16) / 32 + 80;
- else
- /* calculated gain 65..1024 -> (1..120) << 8 + 0x60 */
- data = (((gain - 64 + 7) * 32) & 0xff00) | 0x60;
-
- dev_dbg(&client->dev, "Set gain from 0x%x to 0x%x\n",
- reg_read(client, MT9T031_GLOBAL_GAIN), data);
- data = reg_write(client, MT9T031_GLOBAL_GAIN, data);
- if (data < 0)
- return -EIO;
- }
- return 0;
-
- case V4L2_CID_EXPOSURE_AUTO:
- if (ctrl->val == V4L2_EXPOSURE_MANUAL) {
- unsigned int range = exp->maximum - exp->minimum;
- unsigned int shutter = ((exp->val - (s32)exp->minimum) * 1048 +
- range / 2) / range + 1;
- u32 old;
-
- get_shutter(client, &old);
- dev_dbg(&client->dev, "Set shutter from %u to %u\n",
- old, shutter);
- if (set_shutter(client, shutter) < 0)
- return -EIO;
- } else {
- const u16 vblank = MT9T031_VERTICAL_BLANK;
- mt9t031->total_h = mt9t031->rect.height +
- mt9t031->y_skip_top + vblank;
-
- if (set_shutter(client, mt9t031->total_h) < 0)
- return -EIO;
- }
- return 0;
- default:
- return -EINVAL;
- }
- return 0;
-}
-
-/*
- * Power Management:
- * This function does nothing for now but must be present for pm to work
- */
-static int mt9t031_runtime_suspend(struct device *dev)
-{
- return 0;
-}
-
-/*
- * Power Management:
- * COLUMN_ADDRESS_MODE and ROW_ADDRESS_MODE are not rewritten if unchanged
- * they are however changed at reset if the platform hook is present
- * thus we rewrite them with the values stored by the driver
- */
-static int mt9t031_runtime_resume(struct device *dev)
-{
- struct video_device *vdev = to_video_device(dev);
- struct v4l2_subdev *sd = soc_camera_vdev_to_subdev(vdev);
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- struct mt9t031 *mt9t031 = to_mt9t031(client);
-
- int ret;
- u16 xbin, ybin;
-
- xbin = min(mt9t031->xskip, (u16)3);
- ybin = min(mt9t031->yskip, (u16)3);
-
- ret = reg_write(client, MT9T031_COLUMN_ADDRESS_MODE,
- ((xbin - 1) << 4) | (mt9t031->xskip - 1));
- if (ret < 0)
- return ret;
-
- ret = reg_write(client, MT9T031_ROW_ADDRESS_MODE,
- ((ybin - 1) << 4) | (mt9t031->yskip - 1));
- if (ret < 0)
- return ret;
-
- return 0;
-}
-
-static const struct dev_pm_ops mt9t031_dev_pm_ops = {
- .runtime_suspend = mt9t031_runtime_suspend,
- .runtime_resume = mt9t031_runtime_resume,
-};
-
-static const struct device_type mt9t031_dev_type = {
- .name = "MT9T031",
- .pm = &mt9t031_dev_pm_ops,
-};
-
-static int mt9t031_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 video_device *vdev = soc_camera_i2c_to_vdev(client);
- struct mt9t031 *mt9t031 = to_mt9t031(client);
- int ret;
-
- if (on) {
- ret = soc_camera_power_on(&client->dev, ssdd, mt9t031->clk);
- if (ret < 0)
- return ret;
- if (vdev)
- /* Not needed during probing, when vdev isn't available yet */
- vdev->dev.type = &mt9t031_dev_type;
- } else {
- if (vdev)
- vdev->dev.type = NULL;
- soc_camera_power_off(&client->dev, ssdd, mt9t031->clk);
- }
-
- 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 i2c_client *client)
-{
- struct mt9t031 *mt9t031 = to_mt9t031(client);
- s32 data;
- int ret;
-
- ret = mt9t031_s_power(&mt9t031->subdev, 1);
- if (ret < 0)
- return ret;
-
- ret = mt9t031_idle(client);
- if (ret < 0) {
- dev_err(&client->dev, "Failed to initialise the camera\n");
- goto done;
- }
-
- /* Read out the chip version register */
- data = reg_read(client, MT9T031_CHIP_VERSION);
-
- switch (data) {
- case 0x1621:
- break;
- default:
- dev_err(&client->dev,
- "No MT9T031 chip detected, register read %x\n", data);
- ret = -ENODEV;
- goto done;
- }
-
- dev_info(&client->dev, "Detected a MT9T031 chip ID %x\n", data);
-
- ret = v4l2_ctrl_handler_setup(&mt9t031->hdl);
-
-done:
- mt9t031_s_power(&mt9t031->subdev, 0);
-
- return ret;
-}
-
-static int mt9t031_g_skip_top_lines(struct v4l2_subdev *sd, u32 *lines)
-{
- struct i2c_client *client = v4l2_get_subdevdata(sd);
- struct mt9t031 *mt9t031 = to_mt9t031(client);
-
- *lines = mt9t031->y_skip_top;
-
- return 0;
-}
-
-static const struct v4l2_ctrl_ops mt9t031_ctrl_ops = {
- .g_volatile_ctrl = mt9t031_g_volatile_ctrl,
- .s_ctrl = mt9t031_s_ctrl,
-};
-
-static const struct v4l2_subdev_core_ops mt9t031_subdev_core_ops = {
- .s_power = mt9t031_s_power,
-#ifdef CONFIG_VIDEO_ADV_DEBUG
- .g_register = mt9t031_g_register,
- .s_register = mt9t031_s_register,
-#endif
-};
-
-static int mt9t031_enum_mbus_code(struct v4l2_subdev *sd,
- struct v4l2_subdev_pad_config *cfg,
- struct v4l2_subdev_mbus_code_enum *code)
-{
- if (code->pad || code->index)
- return -EINVAL;
-
- code->code = MEDIA_BUS_FMT_SBGGR10_1X10;
- return 0;
-}
-
-static int mt9t031_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);
-
- cfg->flags = V4L2_MBUS_MASTER | V4L2_MBUS_PCLK_SAMPLE_RISING |
- V4L2_MBUS_PCLK_SAMPLE_FALLING | V4L2_MBUS_HSYNC_ACTIVE_HIGH |
- V4L2_MBUS_VSYNC_ACTIVE_HIGH | V4L2_MBUS_DATA_ACTIVE_HIGH;
- cfg->type = V4L2_MBUS_PARALLEL;
- cfg->flags = soc_camera_apply_board_flags(ssdd, cfg);
-
- return 0;
-}
-
-static int mt9t031_s_mbus_config(struct v4l2_subdev *sd,
- const 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);
-
- if (soc_camera_apply_board_flags(ssdd, cfg) &
- V4L2_MBUS_PCLK_SAMPLE_FALLING)
- return reg_clear(client, MT9T031_PIXEL_CLOCK_CONTROL, 0x8000);
- else
- return reg_set(client, MT9T031_PIXEL_CLOCK_CONTROL, 0x8000);
-}
-
-static const struct v4l2_subdev_video_ops mt9t031_subdev_video_ops = {
- .s_stream = mt9t031_s_stream,
- .g_mbus_config = mt9t031_g_mbus_config,
- .s_mbus_config = mt9t031_s_mbus_config,
-};
-
-static const struct v4l2_subdev_sensor_ops mt9t031_subdev_sensor_ops = {
- .g_skip_top_lines = mt9t031_g_skip_top_lines,
-};
-
-static const struct v4l2_subdev_pad_ops mt9t031_subdev_pad_ops = {
- .enum_mbus_code = mt9t031_enum_mbus_code,
- .get_selection = mt9t031_get_selection,
- .set_selection = mt9t031_set_selection,
- .get_fmt = mt9t031_get_fmt,
- .set_fmt = mt9t031_set_fmt,
-};
-
-static const struct v4l2_subdev_ops mt9t031_subdev_ops = {
- .core = &mt9t031_subdev_core_ops,
- .video = &mt9t031_subdev_video_ops,
- .sensor = &mt9t031_subdev_sensor_ops,
- .pad = &mt9t031_subdev_pad_ops,
-};
-
-static int mt9t031_probe(struct i2c_client *client,
- const struct i2c_device_id *did)
-{
- struct mt9t031 *mt9t031;
- struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
- struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
- int ret;
-
- if (!ssdd) {
- 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 = devm_kzalloc(&client->dev, sizeof(struct mt9t031), GFP_KERNEL);
- if (!mt9t031)
- return -ENOMEM;
-
- v4l2_i2c_subdev_init(&mt9t031->subdev, client, &mt9t031_subdev_ops);
- v4l2_ctrl_handler_init(&mt9t031->hdl, 5);
- v4l2_ctrl_new_std(&mt9t031->hdl, &mt9t031_ctrl_ops,
- V4L2_CID_VFLIP, 0, 1, 1, 0);
- v4l2_ctrl_new_std(&mt9t031->hdl, &mt9t031_ctrl_ops,
- V4L2_CID_HFLIP, 0, 1, 1, 0);
- v4l2_ctrl_new_std(&mt9t031->hdl, &mt9t031_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
- */
- mt9t031->autoexposure = v4l2_ctrl_new_std_menu(&mt9t031->hdl,
- &mt9t031_ctrl_ops, V4L2_CID_EXPOSURE_AUTO, 1, 0,
- V4L2_EXPOSURE_AUTO);
- mt9t031->exposure = v4l2_ctrl_new_std(&mt9t031->hdl, &mt9t031_ctrl_ops,
- V4L2_CID_EXPOSURE, 1, 255, 1, 255);
-
- mt9t031->subdev.ctrl_handler = &mt9t031->hdl;
- if (mt9t031->hdl.error)
- return mt9t031->hdl.error;
-
- v4l2_ctrl_auto_cluster(2, &mt9t031->autoexposure,
- V4L2_EXPOSURE_MANUAL, true);
-
- mt9t031->y_skip_top = 0;
- mt9t031->rect.left = MT9T031_COLUMN_SKIP;
- mt9t031->rect.top = MT9T031_ROW_SKIP;
- mt9t031->rect.width = MT9T031_MAX_WIDTH;
- mt9t031->rect.height = MT9T031_MAX_HEIGHT;
-
- mt9t031->xskip = 1;
- mt9t031->yskip = 1;
-
- mt9t031->clk = v4l2_clk_get(&client->dev, "mclk");
- if (IS_ERR(mt9t031->clk)) {
- ret = PTR_ERR(mt9t031->clk);
- goto eclkget;
- }
-
- ret = mt9t031_video_probe(client);
- if (ret) {
- v4l2_clk_put(mt9t031->clk);
-eclkget:
- v4l2_ctrl_handler_free(&mt9t031->hdl);
- }
-
- return ret;
-}
-
-static int mt9t031_remove(struct i2c_client *client)
-{
- struct mt9t031 *mt9t031 = to_mt9t031(client);
-
- v4l2_clk_put(mt9t031->clk);
- v4l2_device_unregister_subdev(&mt9t031->subdev);
- v4l2_ctrl_handler_free(&mt9t031->hdl);
-
- 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,
-};
-
-module_i2c_driver(mt9t031_i2c_driver);
-
-MODULE_DESCRIPTION("Micron MT9T031 Camera driver");
-MODULE_AUTHOR("Guennadi Liakhovetski <lg@denx.de>");
-MODULE_LICENSE("GPL v2");
source "drivers/staging/media/imx074/Kconfig"
+source "drivers/staging/media/mt9t031/Kconfig"
+
source "drivers/staging/media/omap4iss/Kconfig"
source "drivers/staging/media/tegra-vde/Kconfig"
obj-$(CONFIG_DVB_CXD2099) += cxd2099/
obj-$(CONFIG_VIDEO_IMX_MEDIA) += imx/
obj-$(CONFIG_SOC_CAMERA_IMX074) += imx074/
+obj-$(CONFIG_SOC_CAMERA_MT9T031) += mt9t031/
obj-$(CONFIG_VIDEO_DM365_VPFE) += davinci_vpfe/
obj-$(CONFIG_VIDEO_OMAP4) += omap4iss/
obj-$(CONFIG_INTEL_ATOMISP) += atomisp/
--- /dev/null
+config SOC_CAMERA_IMX074
+ tristate "imx074 support (DEPRECATED)"
+ depends on SOC_CAMERA && I2C
+ help
+ This driver supports IMX074 cameras from Sony
+
+config SOC_CAMERA_MT9T031
+ tristate "mt9t031 support (DEPRECATED)"
+ depends on SOC_CAMERA && I2C
+ help
+ This driver supports MT9T031 cameras from Micron.
--- /dev/null
+obj-$(CONFIG_SOC_CAMERA_MT9T031) += mt9t031.o
--- /dev/null
+This sensor driver needs to be converted to a regular
+v4l2 subdev driver. The soc_camera framework is deprecated and
+will be removed in the future. Unless someone does this work this
+sensor driver will be deleted when the soc_camera framework is
+deleted.
--- /dev/null
+/*
+ * 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/device.h>
+#include <linux/i2c.h>
+#include <linux/log2.h>
+#include <linux/pm.h>
+#include <linux/slab.h>
+#include <linux/v4l2-mediabus.h>
+#include <linux/videodev2.h>
+#include <linux/module.h>
+
+#include <media/soc_camera.h>
+#include <media/v4l2-clk.h>
+#include <media/v4l2-subdev.h>
+#include <media/v4l2-ctrls.h>
+
+/*
+ * ATTENTION: this driver still cannot be used outside of the soc-camera
+ * framework because of its PM implementation, using the video_device node.
+ * If hardware becomes available for testing, alternative PM approaches shall
+ * be considered and tested.
+ */
+
+/*
+ * mt9t031 i2c address 0x5d
+ * The platform has to define struct i2c_board_info objects and link to them
+ * from struct soc_camera_host_desc
+ */
+
+/* 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 18
+#define MT9T031_HORIZONTAL_BLANK 142
+#define MT9T031_VERTICAL_BLANK 25
+#define MT9T031_COLUMN_SKIP 32
+#define MT9T031_ROW_SKIP 20
+
+struct mt9t031 {
+ 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;
+ u16 xskip;
+ u16 yskip;
+ unsigned int total_h;
+ unsigned short y_skip_top; /* Lines to skip at the top */
+};
+
+static struct mt9t031 *to_mt9t031(const struct i2c_client *client)
+{
+ return container_of(i2c_get_clientdata(client), struct mt9t031, 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 set_shutter(struct i2c_client *client, const u32 data)
+{
+ int ret;
+
+ ret = reg_write(client, MT9T031_SHUTTER_WIDTH_UPPER, data >> 16);
+
+ if (ret >= 0)
+ ret = reg_write(client, MT9T031_SHUTTER_WIDTH, data & 0xffff);
+
+ return ret;
+}
+
+static int get_shutter(struct i2c_client *client, u32 *data)
+{
+ int ret;
+
+ ret = reg_read(client, MT9T031_SHUTTER_WIDTH_UPPER);
+ *data = ret << 16;
+
+ if (ret >= 0)
+ ret = reg_read(client, MT9T031_SHUTTER_WIDTH);
+ *data |= ret & 0xffff;
+
+ return ret < 0 ? ret : 0;
+}
+
+static int mt9t031_idle(struct i2c_client *client)
+{
+ int ret;
+
+ /* Disable chip output, synchronous option update */
+ ret = reg_write(client, MT9T031_RESET, 1);
+ if (ret >= 0)
+ ret = reg_write(client, MT9T031_RESET, 0);
+ if (ret >= 0)
+ ret = reg_clear(client, MT9T031_OUTPUT_CONTROL, 2);
+
+ return ret >= 0 ? 0 : -EIO;
+}
+
+static int mt9t031_s_stream(struct v4l2_subdev *sd, int enable)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ int ret;
+
+ if (enable)
+ /* Switch to master "normal" mode */
+ ret = reg_set(client, MT9T031_OUTPUT_CONTROL, 2);
+ else
+ /* Stop sensor readout */
+ ret = reg_clear(client, MT9T031_OUTPUT_CONTROL, 2);
+
+ if (ret < 0)
+ return -EIO;
+
+ return 0;
+}
+
+/* target must be _even_ */
+static u16 mt9t031_skip(s32 *source, s32 target, s32 max)
+{
+ unsigned int skip;
+
+ if (*source < target + target / 2) {
+ *source = target;
+ return 1;
+ }
+
+ skip = min(max, *source + target / 2) / target;
+ if (skip > 8)
+ skip = 8;
+ *source = target * skip;
+
+ return skip;
+}
+
+/* rect is the sensor rectangle, the caller guarantees parameter validity */
+static int mt9t031_set_params(struct i2c_client *client,
+ struct v4l2_rect *rect, u16 xskip, u16 yskip)
+{
+ struct mt9t031 *mt9t031 = to_mt9t031(client);
+ int ret;
+ u16 xbin, ybin;
+ const u16 hblank = MT9T031_HORIZONTAL_BLANK,
+ vblank = MT9T031_VERTICAL_BLANK;
+
+ xbin = min(xskip, (u16)3);
+ ybin = min(yskip, (u16)3);
+
+ /*
+ * Could just do roundup(rect->left, [xy]bin * 2); but this is cheaper.
+ * There is always a valid suitably aligned value. The worst case is
+ * xbin = 3, width = 2048. Then we will start at 36, the last read out
+ * pixel will be 2083, which is < 2085 - first black pixel.
+ *
+ * MT9T031 datasheet imposes window left border alignment, depending on
+ * the selected xskip. Failing to conform to this requirement produces
+ * dark horizontal stripes in the image. However, even obeying to this
+ * requirement doesn't eliminate the stripes in all configurations. They
+ * appear "locally reproducibly," but can differ between tests under
+ * different lighting conditions.
+ */
+ switch (xbin) {
+ case 1:
+ rect->left &= ~1;
+ break;
+ case 2:
+ rect->left &= ~3;
+ break;
+ case 3:
+ rect->left = rect->left > roundup(MT9T031_COLUMN_SKIP, 6) ?
+ (rect->left / 6) * 6 : roundup(MT9T031_COLUMN_SKIP, 6);
+ }
+
+ rect->top &= ~1;
+
+ dev_dbg(&client->dev, "skip %u:%u, rect %ux%u@%u:%u\n",
+ xskip, yskip, rect->width, rect->height, rect->left, rect->top);
+
+ /* Disable register update, reconfigure atomically */
+ ret = reg_set(client, MT9T031_OUTPUT_CONTROL, 1);
+ if (ret < 0)
+ return ret;
+
+ /* Blanking and start values - default... */
+ ret = reg_write(client, MT9T031_HORIZONTAL_BLANKING, hblank);
+ if (ret >= 0)
+ ret = reg_write(client, MT9T031_VERTICAL_BLANKING, vblank);
+
+ if (yskip != mt9t031->yskip || xskip != mt9t031->xskip) {
+ /* Binning, skipping */
+ if (ret >= 0)
+ ret = reg_write(client, MT9T031_COLUMN_ADDRESS_MODE,
+ ((xbin - 1) << 4) | (xskip - 1));
+ if (ret >= 0)
+ ret = reg_write(client, MT9T031_ROW_ADDRESS_MODE,
+ ((ybin - 1) << 4) | (yskip - 1));
+ }
+ dev_dbg(&client->dev, "new physical left %u, top %u\n",
+ rect->left, rect->top);
+
+ /*
+ * The caller provides a supported format, as guaranteed by
+ * .set_fmt(FORMAT_TRY), soc_camera_s_selection() and soc_camera_cropcap()
+ */
+ if (ret >= 0)
+ ret = reg_write(client, MT9T031_COLUMN_START, rect->left);
+ if (ret >= 0)
+ ret = reg_write(client, MT9T031_ROW_START, rect->top);
+ if (ret >= 0)
+ ret = reg_write(client, MT9T031_WINDOW_WIDTH, rect->width - 1);
+ if (ret >= 0)
+ ret = reg_write(client, MT9T031_WINDOW_HEIGHT,
+ rect->height + mt9t031->y_skip_top - 1);
+ if (ret >= 0 && v4l2_ctrl_g_ctrl(mt9t031->autoexposure) == V4L2_EXPOSURE_AUTO) {
+ mt9t031->total_h = rect->height + mt9t031->y_skip_top + vblank;
+
+ ret = set_shutter(client, mt9t031->total_h);
+ }
+
+ /* Re-enable register update, commit all changes */
+ if (ret >= 0)
+ ret = reg_clear(client, MT9T031_OUTPUT_CONTROL, 1);
+
+ if (ret >= 0) {
+ mt9t031->rect = *rect;
+ mt9t031->xskip = xskip;
+ mt9t031->yskip = yskip;
+ }
+
+ return ret < 0 ? ret : 0;
+}
+
+static int mt9t031_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 mt9t031 *mt9t031 = to_mt9t031(client);
+ struct v4l2_rect rect = sel->r;
+
+ if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE ||
+ sel->target != V4L2_SEL_TGT_CROP)
+ return -EINVAL;
+
+ rect.width = ALIGN(rect.width, 2);
+ rect.height = ALIGN(rect.height, 2);
+
+ soc_camera_limit_side(&rect.left, &rect.width,
+ MT9T031_COLUMN_SKIP, MT9T031_MIN_WIDTH, MT9T031_MAX_WIDTH);
+
+ soc_camera_limit_side(&rect.top, &rect.height,
+ MT9T031_ROW_SKIP, MT9T031_MIN_HEIGHT, MT9T031_MAX_HEIGHT);
+
+ return mt9t031_set_params(client, &rect, mt9t031->xskip, mt9t031->yskip);
+}
+
+static int mt9t031_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 mt9t031 *mt9t031 = to_mt9t031(client);
+
+ if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+ return -EINVAL;
+
+ switch (sel->target) {
+ case V4L2_SEL_TGT_CROP_BOUNDS:
+ case V4L2_SEL_TGT_CROP_DEFAULT:
+ sel->r.left = MT9T031_COLUMN_SKIP;
+ sel->r.top = MT9T031_ROW_SKIP;
+ sel->r.width = MT9T031_MAX_WIDTH;
+ sel->r.height = MT9T031_MAX_HEIGHT;
+ return 0;
+ case V4L2_SEL_TGT_CROP:
+ sel->r = mt9t031->rect;
+ return 0;
+ default:
+ return -EINVAL;
+ }
+}
+
+static int mt9t031_get_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 mt9t031 *mt9t031 = to_mt9t031(client);
+
+ if (format->pad)
+ return -EINVAL;
+
+ mf->width = mt9t031->rect.width / mt9t031->xskip;
+ mf->height = mt9t031->rect.height / mt9t031->yskip;
+ mf->code = MEDIA_BUS_FMT_SBGGR10_1X10;
+ mf->colorspace = V4L2_COLORSPACE_SRGB;
+ mf->field = V4L2_FIELD_NONE;
+
+ return 0;
+}
+
+/*
+ * If a user window larger than sensor window is requested, we'll increase the
+ * sensor window.
+ */
+static int mt9t031_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 mt9t031 *mt9t031 = to_mt9t031(client);
+ u16 xskip, yskip;
+ struct v4l2_rect rect = mt9t031->rect;
+
+ if (format->pad)
+ return -EINVAL;
+
+ mf->code = MEDIA_BUS_FMT_SBGGR10_1X10;
+ mf->colorspace = V4L2_COLORSPACE_SRGB;
+ v4l_bound_align_image(
+ &mf->width, MT9T031_MIN_WIDTH, MT9T031_MAX_WIDTH, 1,
+ &mf->height, MT9T031_MIN_HEIGHT, MT9T031_MAX_HEIGHT, 1, 0);
+
+ if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
+ cfg->try_fmt = *mf;
+ return 0;
+ }
+
+ /*
+ * Width and height are within limits.
+ * S_FMT: use binning and skipping for scaling
+ */
+ xskip = mt9t031_skip(&rect.width, mf->width, MT9T031_MAX_WIDTH);
+ yskip = mt9t031_skip(&rect.height, mf->height, MT9T031_MAX_HEIGHT);
+
+ mf->code = MEDIA_BUS_FMT_SBGGR10_1X10;
+ mf->colorspace = V4L2_COLORSPACE_SRGB;
+
+ /* mt9t031_set_params() doesn't change width and height */
+ return mt9t031_set_params(client, &rect, xskip, yskip);
+}
+
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+static int mt9t031_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 = 1;
+ reg->val = reg_read(client, reg->reg);
+
+ if (reg->val > 0xffff)
+ return -EIO;
+
+ return 0;
+}
+
+static int mt9t031_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 mt9t031_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct mt9t031 *mt9t031 = container_of(ctrl->handler,
+ struct mt9t031, hdl);
+ const u32 shutter_max = MT9T031_MAX_HEIGHT + MT9T031_VERTICAL_BLANK;
+ s32 min, max;
+
+ switch (ctrl->id) {
+ case V4L2_CID_EXPOSURE_AUTO:
+ min = mt9t031->exposure->minimum;
+ max = mt9t031->exposure->maximum;
+ mt9t031->exposure->val =
+ (shutter_max / 2 + (mt9t031->total_h - 1) * (max - min))
+ / shutter_max + min;
+ break;
+ }
+ return 0;
+}
+
+static int mt9t031_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct mt9t031 *mt9t031 = container_of(ctrl->handler,
+ struct mt9t031, hdl);
+ struct v4l2_subdev *sd = &mt9t031->subdev;
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct v4l2_ctrl *exp = mt9t031->exposure;
+ int data;
+
+ switch (ctrl->id) {
+ case V4L2_CID_VFLIP:
+ if (ctrl->val)
+ data = reg_set(client, MT9T031_READ_MODE_2, 0x8000);
+ else
+ data = reg_clear(client, MT9T031_READ_MODE_2, 0x8000);
+ if (data < 0)
+ return -EIO;
+ return 0;
+ case V4L2_CID_HFLIP:
+ if (ctrl->val)
+ data = reg_set(client, MT9T031_READ_MODE_2, 0x4000);
+ else
+ data = reg_clear(client, MT9T031_READ_MODE_2, 0x4000);
+ 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, MT9T031_GLOBAL_GAIN, data);
+ if (data < 0)
+ return -EIO;
+ } else {
+ /* Pack it into 1.125..128 variable step, register values 9..0x7860 */
+ /* We assume qctrl->maximum - qctrl->default_value - 1 > 0 */
+ unsigned long range = ctrl->maximum - ctrl->default_value - 1;
+ /* calculated gain: map 65..127 to 9..1024 step 0.125 */
+ unsigned long gain = ((ctrl->val - (s32)ctrl->default_value - 1) *
+ 1015 + range / 2) / range + 9;
+
+ if (gain <= 32) /* calculated gain 9..32 -> 9..32 */
+ data = gain;
+ else if (gain <= 64) /* calculated gain 33..64 -> 0x51..0x60 */
+ data = ((gain - 32) * 16 + 16) / 32 + 80;
+ else
+ /* calculated gain 65..1024 -> (1..120) << 8 + 0x60 */
+ data = (((gain - 64 + 7) * 32) & 0xff00) | 0x60;
+
+ dev_dbg(&client->dev, "Set gain from 0x%x to 0x%x\n",
+ reg_read(client, MT9T031_GLOBAL_GAIN), data);
+ data = reg_write(client, MT9T031_GLOBAL_GAIN, data);
+ if (data < 0)
+ return -EIO;
+ }
+ return 0;
+
+ case V4L2_CID_EXPOSURE_AUTO:
+ if (ctrl->val == V4L2_EXPOSURE_MANUAL) {
+ unsigned int range = exp->maximum - exp->minimum;
+ unsigned int shutter = ((exp->val - (s32)exp->minimum) * 1048 +
+ range / 2) / range + 1;
+ u32 old;
+
+ get_shutter(client, &old);
+ dev_dbg(&client->dev, "Set shutter from %u to %u\n",
+ old, shutter);
+ if (set_shutter(client, shutter) < 0)
+ return -EIO;
+ } else {
+ const u16 vblank = MT9T031_VERTICAL_BLANK;
+ mt9t031->total_h = mt9t031->rect.height +
+ mt9t031->y_skip_top + vblank;
+
+ if (set_shutter(client, mt9t031->total_h) < 0)
+ return -EIO;
+ }
+ return 0;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/*
+ * Power Management:
+ * This function does nothing for now but must be present for pm to work
+ */
+static int mt9t031_runtime_suspend(struct device *dev)
+{
+ return 0;
+}
+
+/*
+ * Power Management:
+ * COLUMN_ADDRESS_MODE and ROW_ADDRESS_MODE are not rewritten if unchanged
+ * they are however changed at reset if the platform hook is present
+ * thus we rewrite them with the values stored by the driver
+ */
+static int mt9t031_runtime_resume(struct device *dev)
+{
+ struct video_device *vdev = to_video_device(dev);
+ struct v4l2_subdev *sd = soc_camera_vdev_to_subdev(vdev);
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct mt9t031 *mt9t031 = to_mt9t031(client);
+
+ int ret;
+ u16 xbin, ybin;
+
+ xbin = min(mt9t031->xskip, (u16)3);
+ ybin = min(mt9t031->yskip, (u16)3);
+
+ ret = reg_write(client, MT9T031_COLUMN_ADDRESS_MODE,
+ ((xbin - 1) << 4) | (mt9t031->xskip - 1));
+ if (ret < 0)
+ return ret;
+
+ ret = reg_write(client, MT9T031_ROW_ADDRESS_MODE,
+ ((ybin - 1) << 4) | (mt9t031->yskip - 1));
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static const struct dev_pm_ops mt9t031_dev_pm_ops = {
+ .runtime_suspend = mt9t031_runtime_suspend,
+ .runtime_resume = mt9t031_runtime_resume,
+};
+
+static const struct device_type mt9t031_dev_type = {
+ .name = "MT9T031",
+ .pm = &mt9t031_dev_pm_ops,
+};
+
+static int mt9t031_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 video_device *vdev = soc_camera_i2c_to_vdev(client);
+ struct mt9t031 *mt9t031 = to_mt9t031(client);
+ int ret;
+
+ if (on) {
+ ret = soc_camera_power_on(&client->dev, ssdd, mt9t031->clk);
+ if (ret < 0)
+ return ret;
+ if (vdev)
+ /* Not needed during probing, when vdev isn't available yet */
+ vdev->dev.type = &mt9t031_dev_type;
+ } else {
+ if (vdev)
+ vdev->dev.type = NULL;
+ soc_camera_power_off(&client->dev, ssdd, mt9t031->clk);
+ }
+
+ 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 i2c_client *client)
+{
+ struct mt9t031 *mt9t031 = to_mt9t031(client);
+ s32 data;
+ int ret;
+
+ ret = mt9t031_s_power(&mt9t031->subdev, 1);
+ if (ret < 0)
+ return ret;
+
+ ret = mt9t031_idle(client);
+ if (ret < 0) {
+ dev_err(&client->dev, "Failed to initialise the camera\n");
+ goto done;
+ }
+
+ /* Read out the chip version register */
+ data = reg_read(client, MT9T031_CHIP_VERSION);
+
+ switch (data) {
+ case 0x1621:
+ break;
+ default:
+ dev_err(&client->dev,
+ "No MT9T031 chip detected, register read %x\n", data);
+ ret = -ENODEV;
+ goto done;
+ }
+
+ dev_info(&client->dev, "Detected a MT9T031 chip ID %x\n", data);
+
+ ret = v4l2_ctrl_handler_setup(&mt9t031->hdl);
+
+done:
+ mt9t031_s_power(&mt9t031->subdev, 0);
+
+ return ret;
+}
+
+static int mt9t031_g_skip_top_lines(struct v4l2_subdev *sd, u32 *lines)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct mt9t031 *mt9t031 = to_mt9t031(client);
+
+ *lines = mt9t031->y_skip_top;
+
+ return 0;
+}
+
+static const struct v4l2_ctrl_ops mt9t031_ctrl_ops = {
+ .g_volatile_ctrl = mt9t031_g_volatile_ctrl,
+ .s_ctrl = mt9t031_s_ctrl,
+};
+
+static const struct v4l2_subdev_core_ops mt9t031_subdev_core_ops = {
+ .s_power = mt9t031_s_power,
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+ .g_register = mt9t031_g_register,
+ .s_register = mt9t031_s_register,
+#endif
+};
+
+static int mt9t031_enum_mbus_code(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_mbus_code_enum *code)
+{
+ if (code->pad || code->index)
+ return -EINVAL;
+
+ code->code = MEDIA_BUS_FMT_SBGGR10_1X10;
+ return 0;
+}
+
+static int mt9t031_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);
+
+ cfg->flags = V4L2_MBUS_MASTER | V4L2_MBUS_PCLK_SAMPLE_RISING |
+ V4L2_MBUS_PCLK_SAMPLE_FALLING | V4L2_MBUS_HSYNC_ACTIVE_HIGH |
+ V4L2_MBUS_VSYNC_ACTIVE_HIGH | V4L2_MBUS_DATA_ACTIVE_HIGH;
+ cfg->type = V4L2_MBUS_PARALLEL;
+ cfg->flags = soc_camera_apply_board_flags(ssdd, cfg);
+
+ return 0;
+}
+
+static int mt9t031_s_mbus_config(struct v4l2_subdev *sd,
+ const 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);
+
+ if (soc_camera_apply_board_flags(ssdd, cfg) &
+ V4L2_MBUS_PCLK_SAMPLE_FALLING)
+ return reg_clear(client, MT9T031_PIXEL_CLOCK_CONTROL, 0x8000);
+ else
+ return reg_set(client, MT9T031_PIXEL_CLOCK_CONTROL, 0x8000);
+}
+
+static const struct v4l2_subdev_video_ops mt9t031_subdev_video_ops = {
+ .s_stream = mt9t031_s_stream,
+ .g_mbus_config = mt9t031_g_mbus_config,
+ .s_mbus_config = mt9t031_s_mbus_config,
+};
+
+static const struct v4l2_subdev_sensor_ops mt9t031_subdev_sensor_ops = {
+ .g_skip_top_lines = mt9t031_g_skip_top_lines,
+};
+
+static const struct v4l2_subdev_pad_ops mt9t031_subdev_pad_ops = {
+ .enum_mbus_code = mt9t031_enum_mbus_code,
+ .get_selection = mt9t031_get_selection,
+ .set_selection = mt9t031_set_selection,
+ .get_fmt = mt9t031_get_fmt,
+ .set_fmt = mt9t031_set_fmt,
+};
+
+static const struct v4l2_subdev_ops mt9t031_subdev_ops = {
+ .core = &mt9t031_subdev_core_ops,
+ .video = &mt9t031_subdev_video_ops,
+ .sensor = &mt9t031_subdev_sensor_ops,
+ .pad = &mt9t031_subdev_pad_ops,
+};
+
+static int mt9t031_probe(struct i2c_client *client,
+ const struct i2c_device_id *did)
+{
+ struct mt9t031 *mt9t031;
+ struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
+ struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
+ int ret;
+
+ if (!ssdd) {
+ 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 = devm_kzalloc(&client->dev, sizeof(struct mt9t031), GFP_KERNEL);
+ if (!mt9t031)
+ return -ENOMEM;
+
+ v4l2_i2c_subdev_init(&mt9t031->subdev, client, &mt9t031_subdev_ops);
+ v4l2_ctrl_handler_init(&mt9t031->hdl, 5);
+ v4l2_ctrl_new_std(&mt9t031->hdl, &mt9t031_ctrl_ops,
+ V4L2_CID_VFLIP, 0, 1, 1, 0);
+ v4l2_ctrl_new_std(&mt9t031->hdl, &mt9t031_ctrl_ops,
+ V4L2_CID_HFLIP, 0, 1, 1, 0);
+ v4l2_ctrl_new_std(&mt9t031->hdl, &mt9t031_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
+ */
+ mt9t031->autoexposure = v4l2_ctrl_new_std_menu(&mt9t031->hdl,
+ &mt9t031_ctrl_ops, V4L2_CID_EXPOSURE_AUTO, 1, 0,
+ V4L2_EXPOSURE_AUTO);
+ mt9t031->exposure = v4l2_ctrl_new_std(&mt9t031->hdl, &mt9t031_ctrl_ops,
+ V4L2_CID_EXPOSURE, 1, 255, 1, 255);
+
+ mt9t031->subdev.ctrl_handler = &mt9t031->hdl;
+ if (mt9t031->hdl.error)
+ return mt9t031->hdl.error;
+
+ v4l2_ctrl_auto_cluster(2, &mt9t031->autoexposure,
+ V4L2_EXPOSURE_MANUAL, true);
+
+ mt9t031->y_skip_top = 0;
+ mt9t031->rect.left = MT9T031_COLUMN_SKIP;
+ mt9t031->rect.top = MT9T031_ROW_SKIP;
+ mt9t031->rect.width = MT9T031_MAX_WIDTH;
+ mt9t031->rect.height = MT9T031_MAX_HEIGHT;
+
+ mt9t031->xskip = 1;
+ mt9t031->yskip = 1;
+
+ mt9t031->clk = v4l2_clk_get(&client->dev, "mclk");
+ if (IS_ERR(mt9t031->clk)) {
+ ret = PTR_ERR(mt9t031->clk);
+ goto eclkget;
+ }
+
+ ret = mt9t031_video_probe(client);
+ if (ret) {
+ v4l2_clk_put(mt9t031->clk);
+eclkget:
+ v4l2_ctrl_handler_free(&mt9t031->hdl);
+ }
+
+ return ret;
+}
+
+static int mt9t031_remove(struct i2c_client *client)
+{
+ struct mt9t031 *mt9t031 = to_mt9t031(client);
+
+ v4l2_clk_put(mt9t031->clk);
+ v4l2_device_unregister_subdev(&mt9t031->subdev);
+ v4l2_ctrl_handler_free(&mt9t031->hdl);
+
+ 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,
+};
+
+module_i2c_driver(mt9t031_i2c_driver);
+
+MODULE_DESCRIPTION("Micron MT9T031 Camera driver");
+MODULE_AUTHOR("Guennadi Liakhovetski <lg@denx.de>");
+MODULE_LICENSE("GPL v2");
projects / linux-2.6-microblaze.git / commitdiff