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path: root/drivers/media/usb/gspca/stk1135.c
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Diffstat (limited to 'drivers/media/usb/gspca/stk1135.c')
-rw-r--r--drivers/media/usb/gspca/stk1135.c79
1 files changed, 41 insertions, 38 deletions
diff --git a/drivers/media/usb/gspca/stk1135.c b/drivers/media/usb/gspca/stk1135.c
index 585868835ace..48234c9a8b6c 100644
--- a/drivers/media/usb/gspca/stk1135.c
+++ b/drivers/media/usb/gspca/stk1135.c
@@ -48,42 +48,11 @@ struct sd {
};
static const struct v4l2_pix_format stk1135_modes[] = {
- {160, 120, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
- .bytesperline = 160,
- .sizeimage = 160 * 120,
- .colorspace = V4L2_COLORSPACE_SRGB},
- {176, 144, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
- .bytesperline = 176,
- .sizeimage = 176 * 144,
- .colorspace = V4L2_COLORSPACE_SRGB},
- {320, 240, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
- .bytesperline = 320,
- .sizeimage = 320 * 240,
- .colorspace = V4L2_COLORSPACE_SRGB},
- {352, 288, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
- .bytesperline = 352,
- .sizeimage = 352 * 288,
- .colorspace = V4L2_COLORSPACE_SRGB},
+ /* default mode (this driver supports variable resolution) */
{640, 480, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
.bytesperline = 640,
.sizeimage = 640 * 480,
.colorspace = V4L2_COLORSPACE_SRGB},
- {720, 576, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
- .bytesperline = 720,
- .sizeimage = 720 * 576,
- .colorspace = V4L2_COLORSPACE_SRGB},
- {800, 600, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
- .bytesperline = 800,
- .sizeimage = 800 * 600,
- .colorspace = V4L2_COLORSPACE_SRGB},
- {1024, 768, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
- .bytesperline = 1024,
- .sizeimage = 1024 * 768,
- .colorspace = V4L2_COLORSPACE_SRGB},
- {1280, 1024, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
- .bytesperline = 1280,
- .sizeimage = 1280 * 1024,
- .colorspace = V4L2_COLORSPACE_SRGB},
};
/* -- read a register -- */
@@ -347,16 +316,16 @@ static void stk1135_configure_mt9m112(struct gspca_dev *gspca_dev)
sensor_write(gspca_dev, cfg[i].reg, cfg[i].val);
/* set output size */
- width = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].width;
- height = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].height;
- if (width <= 640) { /* use context A (half readout speed by default) */
+ width = gspca_dev->pixfmt.width;
+ height = gspca_dev->pixfmt.height;
+ if (width <= 640 && height <= 512) { /* context A (half readout speed)*/
sensor_write(gspca_dev, 0x1a7, width);
sensor_write(gspca_dev, 0x1aa, height);
/* set read mode context A */
sensor_write(gspca_dev, 0x0c8, 0x0000);
/* set resize, read mode, vblank, hblank context A */
sensor_write(gspca_dev, 0x2c8, 0x0000);
- } else { /* use context B (full readout speed by default) */
+ } else { /* context B (full readout speed) */
sensor_write(gspca_dev, 0x1a1, width);
sensor_write(gspca_dev, 0x1a4, height);
/* set read mode context B */
@@ -392,6 +361,9 @@ static void stk1135_configure_clock(struct gspca_dev *gspca_dev)
/* set serial interface clock divider (30MHz/0x1f*16+2) = 60240 kHz) */
reg_w(gspca_dev, STK1135_REG_SICTL + 2, 0x1f);
+
+ /* wait a while for sensor to catch up */
+ udelay(1000);
}
static void stk1135_camera_disable(struct gspca_dev *gspca_dev)
@@ -484,8 +456,8 @@ static int sd_start(struct gspca_dev *gspca_dev)
reg_w(gspca_dev, STK1135_REG_CISPO + 3, 0x00);
/* set capture end position */
- width = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].width;
- height = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].height;
+ width = gspca_dev->pixfmt.width;
+ height = gspca_dev->pixfmt.height;
reg_w(gspca_dev, STK1135_REG_CIEPO + 0, width & 0xff);
reg_w(gspca_dev, STK1135_REG_CIEPO + 1, width >> 8);
reg_w(gspca_dev, STK1135_REG_CIEPO + 2, height & 0xff);
@@ -643,6 +615,35 @@ static int sd_init_controls(struct gspca_dev *gspca_dev)
return 0;
}
+static void stk1135_try_fmt(struct gspca_dev *gspca_dev, struct v4l2_format *fmt)
+{
+ fmt->fmt.pix.width = clamp(fmt->fmt.pix.width, 32U, 1280U);
+ fmt->fmt.pix.height = clamp(fmt->fmt.pix.height, 32U, 1024U);
+ /* round up to even numbers */
+ fmt->fmt.pix.width += (fmt->fmt.pix.width & 1);
+ fmt->fmt.pix.height += (fmt->fmt.pix.height & 1);
+
+ fmt->fmt.pix.bytesperline = fmt->fmt.pix.width;
+ fmt->fmt.pix.sizeimage = fmt->fmt.pix.width * fmt->fmt.pix.height;
+}
+
+static int stk1135_enum_framesizes(struct gspca_dev *gspca_dev,
+ struct v4l2_frmsizeenum *fsize)
+{
+ if (fsize->index != 0 || fsize->pixel_format != V4L2_PIX_FMT_SBGGR8)
+ return -EINVAL;
+
+ fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
+ fsize->stepwise.min_width = 32;
+ fsize->stepwise.min_height = 32;
+ fsize->stepwise.max_width = 1280;
+ fsize->stepwise.max_height = 1024;
+ fsize->stepwise.step_width = 2;
+ fsize->stepwise.step_height = 2;
+
+ return 0;
+}
+
/* sub-driver description */
static const struct sd_desc sd_desc = {
.name = MODULE_NAME,
@@ -653,6 +654,8 @@ static const struct sd_desc sd_desc = {
.stopN = sd_stopN,
.pkt_scan = sd_pkt_scan,
.dq_callback = stk1135_dq_callback,
+ .try_fmt = stk1135_try_fmt,
+ .enum_framesizes = stk1135_enum_framesizes,
};
/* -- module initialisation -- */