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Diffstat (limited to 'linux/drivers/media/video/mt9t031.c')
-rw-r--r--linux/drivers/media/video/mt9t031.c240
1 files changed, 140 insertions, 100 deletions
diff --git a/linux/drivers/media/video/mt9t031.c b/linux/drivers/media/video/mt9t031.c
index aa0e8ec34..a57051522 100644
--- a/linux/drivers/media/video/mt9t031.c
+++ b/linux/drivers/media/video/mt9t031.c
@@ -76,64 +76,61 @@ struct mt9t031 {
u16 yskip;
};
-static int reg_read(struct soc_camera_device *icd, const u8 reg)
+static int reg_read(struct i2c_client *client, const u8 reg)
{
- struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);
- struct i2c_client *client = mt9t031->client;
s32 data = i2c_smbus_read_word_data(client, reg);
return data < 0 ? data : swab16(data);
}
-static int reg_write(struct soc_camera_device *icd, const u8 reg,
+static int reg_write(struct i2c_client *client, const u8 reg,
const u16 data)
{
- struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);
- return i2c_smbus_write_word_data(mt9t031->client, reg, swab16(data));
+ return i2c_smbus_write_word_data(client, reg, swab16(data));
}
-static int reg_set(struct soc_camera_device *icd, const u8 reg,
+static int reg_set(struct i2c_client *client, const u8 reg,
const u16 data)
{
int ret;
- ret = reg_read(icd, reg);
+ ret = reg_read(client, reg);
if (ret < 0)
return ret;
- return reg_write(icd, reg, ret | data);
+ return reg_write(client, reg, ret | data);
}
-static int reg_clear(struct soc_camera_device *icd, const u8 reg,
+static int reg_clear(struct i2c_client *client, const u8 reg,
const u16 data)
{
int ret;
- ret = reg_read(icd, reg);
+ ret = reg_read(client, reg);
if (ret < 0)
return ret;
- return reg_write(icd, reg, ret & ~data);
+ return reg_write(client, reg, ret & ~data);
}
-static int set_shutter(struct soc_camera_device *icd, const u32 data)
+static int set_shutter(struct i2c_client *client, const u32 data)
{
int ret;
- ret = reg_write(icd, MT9T031_SHUTTER_WIDTH_UPPER, data >> 16);
+ ret = reg_write(client, MT9T031_SHUTTER_WIDTH_UPPER, data >> 16);
if (ret >= 0)
- ret = reg_write(icd, MT9T031_SHUTTER_WIDTH, data & 0xffff);
+ ret = reg_write(client, MT9T031_SHUTTER_WIDTH, data & 0xffff);
return ret;
}
-static int get_shutter(struct soc_camera_device *icd, u32 *data)
+static int get_shutter(struct i2c_client *client, u32 *data)
{
int ret;
- ret = reg_read(icd, MT9T031_SHUTTER_WIDTH_UPPER);
+ ret = reg_read(client, MT9T031_SHUTTER_WIDTH_UPPER);
*data = ret << 16;
if (ret >= 0)
- ret = reg_read(icd, MT9T031_SHUTTER_WIDTH);
+ ret = reg_read(client, MT9T031_SHUTTER_WIDTH);
*data |= ret & 0xffff;
return ret < 0 ? ret : 0;
@@ -141,39 +138,62 @@ static int get_shutter(struct soc_camera_device *icd, u32 *data)
static int mt9t031_init(struct soc_camera_device *icd)
{
+ struct i2c_client *client = to_i2c_client(icd->control);
+ struct soc_camera_link *icl = client->dev.platform_data;
int ret;
- /* Disable chip output, synchronous option update */
- dev_dbg(icd->vdev->parent, "%s\n", __func__);
+ if (icl->power) {
+ ret = icl->power(&client->dev, 1);
+ if (ret < 0) {
+ dev_err(icd->vdev->parent,
+ "Platform failed to power-on the camera.\n");
+ return ret;
+ }
+ }
- ret = reg_write(icd, MT9T031_RESET, 1);
+ /* Disable chip output, synchronous option update */
+ ret = reg_write(client, MT9T031_RESET, 1);
if (ret >= 0)
- ret = reg_write(icd, MT9T031_RESET, 0);
+ ret = reg_write(client, MT9T031_RESET, 0);
if (ret >= 0)
- ret = reg_clear(icd, MT9T031_OUTPUT_CONTROL, 2);
+ ret = reg_clear(client, MT9T031_OUTPUT_CONTROL, 2);
+
+ if (ret < 0 && icl->power)
+ icl->power(&client->dev, 0);
return ret >= 0 ? 0 : -EIO;
}
static int mt9t031_release(struct soc_camera_device *icd)
{
+ struct i2c_client *client = to_i2c_client(icd->control);
+ struct soc_camera_link *icl = client->dev.platform_data;
+
/* Disable the chip */
- reg_clear(icd, MT9T031_OUTPUT_CONTROL, 2);
+ reg_clear(client, MT9T031_OUTPUT_CONTROL, 2);
+
+ if (icl->power)
+ icl->power(&client->dev, 0);
+
return 0;
}
static int mt9t031_start_capture(struct soc_camera_device *icd)
{
+ struct i2c_client *client = to_i2c_client(icd->control);
+
/* Switch to master "normal" mode */
- if (reg_set(icd, MT9T031_OUTPUT_CONTROL, 2) < 0)
+ if (reg_set(client, MT9T031_OUTPUT_CONTROL, 2) < 0)
return -EIO;
return 0;
}
static int mt9t031_stop_capture(struct soc_camera_device *icd)
{
+ struct i2c_client *client = to_i2c_client(icd->control);
+
/* Stop sensor readout */
- if (reg_clear(icd, MT9T031_OUTPUT_CONTROL, 2) < 0)
+ if (reg_clear(client, MT9T031_OUTPUT_CONTROL, 2) < 0)
return -EIO;
return 0;
}
@@ -181,14 +201,16 @@ static int mt9t031_stop_capture(struct soc_camera_device *icd)
static int mt9t031_set_bus_param(struct soc_camera_device *icd,
unsigned long flags)
{
+ struct i2c_client *client = to_i2c_client(icd->control);
+
/* The caller should have queried our parameters, check anyway */
if (flags & ~MT9T031_BUS_PARAM)
return -EINVAL;
if (flags & SOCAM_PCLK_SAMPLE_FALLING)
- reg_set(icd, MT9T031_PIXEL_CLOCK_CONTROL, 0x8000);
+ reg_clear(client, MT9T031_PIXEL_CLOCK_CONTROL, 0x8000);
else
- reg_clear(icd, MT9T031_PIXEL_CLOCK_CONTROL, 0x8000);
+ reg_set(client, MT9T031_PIXEL_CLOCK_CONTROL, 0x8000);
return 0;
}
@@ -213,36 +235,15 @@ static void recalculate_limits(struct soc_camera_device *icd,
icd->height_max = MT9T031_MAX_HEIGHT / yskip;
}
-static int mt9t031_set_fmt(struct soc_camera_device *icd,
- __u32 pixfmt, struct v4l2_rect *rect)
+static int mt9t031_set_params(struct soc_camera_device *icd,
+ struct v4l2_rect *rect, u16 xskip, u16 yskip)
{
+ struct i2c_client *client = to_i2c_client(icd->control);
struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);
int ret;
+ u16 xbin, ybin, width, height, left, top;
const u16 hblank = MT9T031_HORIZONTAL_BLANK,
vblank = MT9T031_VERTICAL_BLANK;
- u16 xbin, xskip, ybin, yskip, width, height, left, top;
-
- if (pixfmt) {
- /*
- * try_fmt has put rectangle within limits.
- * S_FMT - use binning and skipping for scaling, recalculate
- * limits, used for cropping
- */
- /* Is this more optimal than just a division? */
- for (xskip = 8; xskip > 1; xskip--)
- if (rect->width * xskip <= MT9T031_MAX_WIDTH)
- break;
-
- for (yskip = 8; yskip > 1; yskip--)
- if (rect->height * yskip <= MT9T031_MAX_HEIGHT)
- break;
-
- recalculate_limits(icd, xskip, yskip);
- } else {
- /* CROP - no change in scaling, or in limits */
- xskip = mt9t031->xskip;
- yskip = mt9t031->yskip;
- }
/* Make sure we don't exceed sensor limits */
if (rect->left + rect->width > icd->width_max)
@@ -280,22 +281,22 @@ static int mt9t031_set_fmt(struct soc_camera_device *icd,
}
/* Disable register update, reconfigure atomically */
- ret = reg_set(icd, MT9T031_OUTPUT_CONTROL, 1);
+ ret = reg_set(client, MT9T031_OUTPUT_CONTROL, 1);
if (ret < 0)
return ret;
/* Blanking and start values - default... */
- ret = reg_write(icd, MT9T031_HORIZONTAL_BLANKING, hblank);
+ ret = reg_write(client, MT9T031_HORIZONTAL_BLANKING, hblank);
if (ret >= 0)
- ret = reg_write(icd, MT9T031_VERTICAL_BLANKING, vblank);
+ ret = reg_write(client, MT9T031_VERTICAL_BLANKING, vblank);
- if (pixfmt) {
+ if (yskip != mt9t031->yskip || xskip != mt9t031->xskip) {
/* Binning, skipping */
if (ret >= 0)
- ret = reg_write(icd, MT9T031_COLUMN_ADDRESS_MODE,
+ ret = reg_write(client, MT9T031_COLUMN_ADDRESS_MODE,
((xbin - 1) << 4) | (xskip - 1));
if (ret >= 0)
- ret = reg_write(icd, MT9T031_ROW_ADDRESS_MODE,
+ ret = reg_write(client, MT9T031_ROW_ADDRESS_MODE,
((ybin - 1) << 4) | (yskip - 1));
}
dev_dbg(&icd->dev, "new physical left %u, top %u\n", left, top);
@@ -303,16 +304,16 @@ static int mt9t031_set_fmt(struct soc_camera_device *icd,
/* The caller provides a supported format, as guaranteed by
* icd->try_fmt_cap(), soc_camera_s_crop() and soc_camera_cropcap() */
if (ret >= 0)
- ret = reg_write(icd, MT9T031_COLUMN_START, left);
+ ret = reg_write(client, MT9T031_COLUMN_START, left);
if (ret >= 0)
- ret = reg_write(icd, MT9T031_ROW_START, top);
+ ret = reg_write(client, MT9T031_ROW_START, top);
if (ret >= 0)
- ret = reg_write(icd, MT9T031_WINDOW_WIDTH, width - 1);
+ ret = reg_write(client, MT9T031_WINDOW_WIDTH, width - 1);
if (ret >= 0)
- ret = reg_write(icd, MT9T031_WINDOW_HEIGHT,
+ ret = reg_write(client, MT9T031_WINDOW_HEIGHT,
height + icd->y_skip_top - 1);
if (ret >= 0 && mt9t031->autoexposure) {
- ret = set_shutter(icd, height + icd->y_skip_top + vblank);
+ ret = set_shutter(client, height + icd->y_skip_top + vblank);
if (ret >= 0) {
const u32 shutter_max = MT9T031_MAX_HEIGHT + vblank;
const struct v4l2_queryctrl *qctrl =
@@ -325,15 +326,58 @@ static int mt9t031_set_fmt(struct soc_camera_device *icd,
}
}
- if (!ret && pixfmt) {
+ /* Re-enable register update, commit all changes */
+ if (ret >= 0)
+ ret = reg_clear(client, MT9T031_OUTPUT_CONTROL, 1);
+
+ return ret < 0 ? ret : 0;
+}
+
+static int mt9t031_set_crop(struct soc_camera_device *icd,
+ struct v4l2_rect *rect)
+{
+ struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);
+
+ /* CROP - no change in scaling, or in limits */
+ return mt9t031_set_params(icd, rect, mt9t031->xskip, mt9t031->yskip);
+}
+
+static int mt9t031_set_fmt(struct soc_camera_device *icd,
+ struct v4l2_format *f)
+{
+ struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);
+ int ret;
+ u16 xskip, yskip;
+ struct v4l2_rect rect = {
+ .left = icd->x_current,
+ .top = icd->y_current,
+ .width = f->fmt.pix.width,
+ .height = f->fmt.pix.height,
+ };
+
+ /*
+ * try_fmt has put rectangle within limits.
+ * S_FMT - use binning and skipping for scaling, recalculate
+ * limits, used for cropping
+ */
+ /* Is this more optimal than just a division? */
+ for (xskip = 8; xskip > 1; xskip--)
+ if (rect.width * xskip <= MT9T031_MAX_WIDTH)
+ break;
+
+ for (yskip = 8; yskip > 1; yskip--)
+ if (rect.height * yskip <= MT9T031_MAX_HEIGHT)
+ break;
+
+ recalculate_limits(icd, xskip, yskip);
+
+ ret = mt9t031_set_params(icd, &rect, xskip, yskip);
+ if (!ret) {
mt9t031->xskip = xskip;
mt9t031->yskip = yskip;
}
- /* Re-enable register update, commit all changes */
- reg_clear(icd, MT9T031_OUTPUT_CONTROL, 1);
-
- return ret < 0 ? ret : 0;
+ return ret;
}
static int mt9t031_try_fmt(struct soc_camera_device *icd,
@@ -341,17 +385,9 @@ static int mt9t031_try_fmt(struct soc_camera_device *icd,
{
struct v4l2_pix_format *pix = &f->fmt.pix;
- if (pix->height < MT9T031_MIN_HEIGHT)
- pix->height = MT9T031_MIN_HEIGHT;
- if (pix->height > MT9T031_MAX_HEIGHT)
- pix->height = MT9T031_MAX_HEIGHT;
- if (pix->width < MT9T031_MIN_WIDTH)
- pix->width = MT9T031_MIN_WIDTH;
- if (pix->width > MT9T031_MAX_WIDTH)
- pix->width = MT9T031_MAX_WIDTH;
-
- pix->width &= ~0x01; /* has to be even */
- pix->height &= ~0x01; /* has to be even */
+ v4l_bound_align_image(
+ &pix->width, MT9T031_MIN_WIDTH, MT9T031_MAX_WIDTH, 1,
+ &pix->height, MT9T031_MIN_HEIGHT, MT9T031_MAX_HEIGHT, 1, 0);
return 0;
}
@@ -377,15 +413,15 @@ static int mt9t031_get_chip_id(struct soc_camera_device *icd,
static int mt9t031_get_register(struct soc_camera_device *icd,
struct v4l2_dbg_register *reg)
{
- struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);
+ struct i2c_client *client = to_i2c_client(icd->control);
if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
return -EINVAL;
- if (reg->match.addr != mt9t031->client->addr)
+ if (reg->match.addr != client->addr)
return -ENODEV;
- reg->val = reg_read(icd, reg->reg);
+ reg->val = reg_read(client, reg->reg);
if (reg->val > 0xffff)
return -EIO;
@@ -396,15 +432,15 @@ static int mt9t031_get_register(struct soc_camera_device *icd,
static int mt9t031_set_register(struct soc_camera_device *icd,
struct v4l2_dbg_register *reg)
{
- struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);
+ struct i2c_client *client = to_i2c_client(icd->control);
if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff)
return -EINVAL;
- if (reg->match.addr != mt9t031->client->addr)
+ if (reg->match.addr != client->addr)
return -ENODEV;
- if (reg_write(icd, reg->reg, reg->val) < 0)
+ if (reg_write(client, reg->reg, reg->val) < 0)
return -EIO;
return 0;
@@ -470,6 +506,7 @@ static struct soc_camera_ops mt9t031_ops = {
.release = mt9t031_release,
.start_capture = mt9t031_start_capture,
.stop_capture = mt9t031_stop_capture,
+ .set_crop = mt9t031_set_crop,
.set_fmt = mt9t031_set_fmt,
.try_fmt = mt9t031_try_fmt,
.set_bus_param = mt9t031_set_bus_param,
@@ -487,18 +524,19 @@ static struct soc_camera_ops mt9t031_ops = {
static int mt9t031_get_control(struct soc_camera_device *icd, struct v4l2_control *ctrl)
{
+ struct i2c_client *client = to_i2c_client(icd->control);
struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);
int data;
switch (ctrl->id) {
case V4L2_CID_VFLIP:
- data = reg_read(icd, MT9T031_READ_MODE_2);
+ data = reg_read(client, MT9T031_READ_MODE_2);
if (data < 0)
return -EIO;
ctrl->value = !!(data & 0x8000);
break;
case V4L2_CID_HFLIP:
- data = reg_read(icd, MT9T031_READ_MODE_2);
+ data = reg_read(client, MT9T031_READ_MODE_2);
if (data < 0)
return -EIO;
ctrl->value = !!(data & 0x4000);
@@ -512,6 +550,7 @@ static int mt9t031_get_control(struct soc_camera_device *icd, struct v4l2_contro
static int mt9t031_set_control(struct soc_camera_device *icd, struct v4l2_control *ctrl)
{
+ struct i2c_client *client = to_i2c_client(icd->control);
struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);
const struct v4l2_queryctrl *qctrl;
int data;
@@ -524,17 +563,17 @@ static int mt9t031_set_control(struct soc_camera_device *icd, struct v4l2_contro
switch (ctrl->id) {
case V4L2_CID_VFLIP:
if (ctrl->value)
- data = reg_set(icd, MT9T031_READ_MODE_2, 0x8000);
+ data = reg_set(client, MT9T031_READ_MODE_2, 0x8000);
else
- data = reg_clear(icd, MT9T031_READ_MODE_2, 0x8000);
+ data = reg_clear(client, MT9T031_READ_MODE_2, 0x8000);
if (data < 0)
return -EIO;
break;
case V4L2_CID_HFLIP:
if (ctrl->value)
- data = reg_set(icd, MT9T031_READ_MODE_2, 0x4000);
+ data = reg_set(client, MT9T031_READ_MODE_2, 0x4000);
else
- data = reg_clear(icd, MT9T031_READ_MODE_2, 0x4000);
+ data = reg_clear(client, MT9T031_READ_MODE_2, 0x4000);
if (data < 0)
return -EIO;
break;
@@ -548,7 +587,7 @@ static int mt9t031_set_control(struct soc_camera_device *icd, struct v4l2_contro
data = ((ctrl->value - qctrl->minimum) * 8 + range / 2) / range;
dev_dbg(&icd->dev, "Setting gain %d\n", data);
- data = reg_write(icd, MT9T031_GLOBAL_GAIN, data);
+ data = reg_write(client, MT9T031_GLOBAL_GAIN, data);
if (data < 0)
return -EIO;
} else {
@@ -568,8 +607,8 @@ static int mt9t031_set_control(struct soc_camera_device *icd, struct v4l2_contro
data = (((gain - 64 + 7) * 32) & 0xff00) | 0x60;
dev_dbg(&icd->dev, "Setting gain from 0x%x to 0x%x\n",
- reg_read(icd, MT9T031_GLOBAL_GAIN), data);
- data = reg_write(icd, MT9T031_GLOBAL_GAIN, data);
+ reg_read(client, MT9T031_GLOBAL_GAIN), data);
+ data = reg_write(client, MT9T031_GLOBAL_GAIN, data);
if (data < 0)
return -EIO;
}
@@ -587,10 +626,10 @@ static int mt9t031_set_control(struct soc_camera_device *icd, struct v4l2_contro
range / 2) / range + 1;
u32 old;
- get_shutter(icd, &old);
+ get_shutter(client, &old);
dev_dbg(&icd->dev, "Setting shutter width from %u to %u\n",
old, shutter);
- if (set_shutter(icd, shutter) < 0)
+ if (set_shutter(client, shutter) < 0)
return -EIO;
icd->exposure = ctrl->value;
mt9t031->autoexposure = 0;
@@ -600,7 +639,7 @@ static int mt9t031_set_control(struct soc_camera_device *icd, struct v4l2_contro
if (ctrl->value) {
const u16 vblank = MT9T031_VERTICAL_BLANK;
const u32 shutter_max = MT9T031_MAX_HEIGHT + vblank;
- if (set_shutter(icd, icd->height +
+ if (set_shutter(client, icd->height +
icd->y_skip_top + vblank) < 0)
return -EIO;
qctrl = soc_camera_find_qctrl(icd->ops, V4L2_CID_EXPOSURE);
@@ -620,6 +659,7 @@ static int mt9t031_set_control(struct soc_camera_device *icd, struct v4l2_contro
* this wasn't our capture interface, so, we wait for the right one */
static int mt9t031_video_probe(struct soc_camera_device *icd)
{
+ struct i2c_client *client = to_i2c_client(icd->control);
struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);
s32 data;
int ret;
@@ -631,11 +671,11 @@ static int mt9t031_video_probe(struct soc_camera_device *icd)
return -ENODEV;
/* Enable the chip */
- data = reg_write(icd, MT9T031_CHIP_ENABLE, 1);
+ data = reg_write(client, MT9T031_CHIP_ENABLE, 1);
dev_dbg(&icd->dev, "write: %d\n", data);
/* Read out the chip version register */
- data = reg_read(icd, MT9T031_CHIP_VERSION);
+ data = reg_read(client, MT9T031_CHIP_VERSION);
switch (data) {
case 0x1621:
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-02 21:19:26 +0000