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path: root/drivers/media/video/gspca/stv06xx/stv06xx_st6422.c
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Diffstat (limited to 'drivers/media/video/gspca/stv06xx/stv06xx_st6422.c')
-rw-r--r--drivers/media/video/gspca/stv06xx/stv06xx_st6422.c291
1 files changed, 120 insertions, 171 deletions
diff --git a/drivers/media/video/gspca/stv06xx/stv06xx_st6422.c b/drivers/media/video/gspca/stv06xx/stv06xx_st6422.c
index 3af53264a36..8a456de4970 100644
--- a/drivers/media/video/gspca/stv06xx/stv06xx_st6422.c
+++ b/drivers/media/video/gspca/stv06xx/stv06xx_st6422.c
@@ -28,6 +28,20 @@
#include "stv06xx_st6422.h"
+/* controls */
+enum e_ctrl {
+ BRIGHTNESS,
+ CONTRAST,
+ GAIN,
+ EXPOSURE,
+ NCTRLS /* number of controls */
+};
+
+/* sensor settings */
+struct st6422_settings {
+ struct gspca_ctrl ctrls[NCTRLS];
+};
+
static struct v4l2_pix_format st6422_mode[] = {
/* Note we actually get 124 lines of data, of which we skip the 4st
4 as they are garbage */
@@ -57,9 +71,14 @@ static struct v4l2_pix_format st6422_mode[] = {
},
};
-static const struct ctrl st6422_ctrl[] = {
-#define BRIGHTNESS_IDX 0
- {
+/* V4L2 controls supported by the driver */
+static void st6422_set_brightness(struct gspca_dev *gspca_dev);
+static void st6422_set_contrast(struct gspca_dev *gspca_dev);
+static void st6422_set_gain(struct gspca_dev *gspca_dev);
+static void st6422_set_exposure(struct gspca_dev *gspca_dev);
+
+static const struct ctrl st6422_ctrl[NCTRLS] = {
+[BRIGHTNESS] = {
{
.id = V4L2_CID_BRIGHTNESS,
.type = V4L2_CTRL_TYPE_INTEGER,
@@ -69,11 +88,9 @@ static const struct ctrl st6422_ctrl[] = {
.step = 1,
.default_value = 3
},
- .set = st6422_set_brightness,
- .get = st6422_get_brightness
+ .set_control = st6422_set_brightness
},
-#define CONTRAST_IDX 1
- {
+[CONTRAST] = {
{
.id = V4L2_CID_CONTRAST,
.type = V4L2_CTRL_TYPE_INTEGER,
@@ -83,11 +100,9 @@ static const struct ctrl st6422_ctrl[] = {
.step = 1,
.default_value = 11
},
- .set = st6422_set_contrast,
- .get = st6422_get_contrast
+ .set_control = st6422_set_contrast
},
-#define GAIN_IDX 2
- {
+[GAIN] = {
{
.id = V4L2_CID_GAIN,
.type = V4L2_CTRL_TYPE_INTEGER,
@@ -97,49 +112,43 @@ static const struct ctrl st6422_ctrl[] = {
.step = 1,
.default_value = 64
},
- .set = st6422_set_gain,
- .get = st6422_get_gain
+ .set_control = st6422_set_gain
},
-#define EXPOSURE_IDX 3
- {
+[EXPOSURE] = {
{
.id = V4L2_CID_EXPOSURE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Exposure",
.minimum = 0,
- .maximum = 1023,
+#define EXPOSURE_MAX 1023
+ .maximum = EXPOSURE_MAX,
.step = 1,
.default_value = 256
},
- .set = st6422_set_exposure,
- .get = st6422_get_exposure
+ .set_control = st6422_set_exposure
},
};
static int st6422_probe(struct sd *sd)
{
- int i;
- s32 *sensor_settings;
+ struct st6422_settings *sensor_settings;
if (sd->bridge != BRIDGE_ST6422)
return -ENODEV;
info("st6422 sensor detected");
- sensor_settings = kmalloc(ARRAY_SIZE(st6422_ctrl) * sizeof(s32),
- GFP_KERNEL);
+ sensor_settings = kmalloc(sizeof *sensor_settings, GFP_KERNEL);
if (!sensor_settings)
return -ENOMEM;
sd->gspca_dev.cam.cam_mode = st6422_mode;
sd->gspca_dev.cam.nmodes = ARRAY_SIZE(st6422_mode);
+ sd->gspca_dev.cam.ctrls = sensor_settings->ctrls;
sd->desc.ctrls = st6422_ctrl;
sd->desc.nctrls = ARRAY_SIZE(st6422_ctrl);
sd->sensor_priv = sensor_settings;
- for (i = 0; i < sd->desc.nctrls; i++)
- sensor_settings[i] = st6422_ctrl[i].qctrl.default_value;
-
return 0;
}
@@ -151,11 +160,11 @@ static int st6422_init(struct sd *sd)
{ STV_ISO_ENABLE, 0x00 }, /* disable capture */
{ 0x1436, 0x00 },
{ 0x1432, 0x03 }, /* 0x00-0x1F brightness */
- { 0x143a, 0xF9 }, /* 0x00-0x0F contrast */
+ { 0x143a, 0xf9 }, /* 0x00-0x0F contrast */
{ 0x0509, 0x38 }, /* R */
{ 0x050a, 0x38 }, /* G */
{ 0x050b, 0x38 }, /* B */
- { 0x050c, 0x2A },
+ { 0x050c, 0x2a },
{ 0x050d, 0x01 },
@@ -213,7 +222,6 @@ static int st6422_init(struct sd *sd)
{ 0x150e, 0x8e },
{ 0x150f, 0x37 },
{ 0x15c0, 0x00 },
- { 0x15c1, 1023 }, /* 160x120, ISOC_PACKET_SIZE */
{ 0x15c3, 0x08 }, /* 0x04/0x14 ... test pictures ??? */
@@ -235,91 +243,92 @@ static void st6422_disconnect(struct sd *sd)
kfree(sd->sensor_priv);
}
-static int st6422_start(struct sd *sd)
+static int setbrightness(struct sd *sd)
{
- int err, packet_size;
- struct cam *cam = &sd->gspca_dev.cam;
- s32 *sensor_settings = sd->sensor_priv;
- struct usb_host_interface *alt;
- struct usb_interface *intf;
-
- intf = usb_ifnum_to_if(sd->gspca_dev.dev, sd->gspca_dev.iface);
- alt = usb_altnum_to_altsetting(intf, sd->gspca_dev.alt);
- if (!alt) {
- err("Couldn't get altsetting");
- return -EIO;
- }
+ struct st6422_settings *sensor_settings = sd->sensor_priv;
- packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
- err = stv06xx_write_bridge(sd, 0x15c1, packet_size);
- if (err < 0)
- return err;
+ /* val goes from 0 -> 31 */
+ return stv06xx_write_bridge(sd, 0x1432,
+ sensor_settings->ctrls[BRIGHTNESS].val);
+}
- if (cam->cam_mode[sd->gspca_dev.curr_mode].priv)
- err = stv06xx_write_bridge(sd, 0x1505, 0x0f);
- else
- err = stv06xx_write_bridge(sd, 0x1505, 0x02);
- if (err < 0)
- return err;
+static int setcontrast(struct sd *sd)
+{
+ struct st6422_settings *sensor_settings = sd->sensor_priv;
+
+ /* Val goes from 0 -> 15 */
+ return stv06xx_write_bridge(sd, 0x143a,
+ sensor_settings->ctrls[CONTRAST].val | 0xf0);
+}
+
+static int setgain(struct sd *sd)
+{
+ struct st6422_settings *sensor_settings = sd->sensor_priv;
+ u8 gain;
+ int err;
+
+ gain = sensor_settings->ctrls[GAIN].val;
- err = st6422_set_brightness(&sd->gspca_dev,
- sensor_settings[BRIGHTNESS_IDX]);
+ /* Set red, green, blue, gain */
+ err = stv06xx_write_bridge(sd, 0x0509, gain);
if (err < 0)
return err;
- err = st6422_set_contrast(&sd->gspca_dev,
- sensor_settings[CONTRAST_IDX]);
+ err = stv06xx_write_bridge(sd, 0x050a, gain);
if (err < 0)
return err;
- err = st6422_set_exposure(&sd->gspca_dev,
- sensor_settings[EXPOSURE_IDX]);
+ err = stv06xx_write_bridge(sd, 0x050b, gain);
if (err < 0)
return err;
- err = st6422_set_gain(&sd->gspca_dev,
- sensor_settings[GAIN_IDX]);
+ /* 2 mystery writes */
+ err = stv06xx_write_bridge(sd, 0x050c, 0x2a);
if (err < 0)
return err;
- PDEBUG(D_STREAM, "Starting stream");
-
- return 0;
+ return stv06xx_write_bridge(sd, 0x050d, 0x01);
}
-static int st6422_stop(struct sd *sd)
+static int setexposure(struct sd *sd)
{
- PDEBUG(D_STREAM, "Halting stream");
-
- return 0;
-}
-
-static int st6422_get_brightness(struct gspca_dev *gspca_dev, __s32 *val)
-{
- struct sd *sd = (struct sd *) gspca_dev;
- s32 *sensor_settings = sd->sensor_priv;
-
- *val = sensor_settings[BRIGHTNESS_IDX];
+ struct st6422_settings *sensor_settings = sd->sensor_priv;
+ u16 expo;
+ int err;
- PDEBUG(D_V4L2, "Read brightness %d", *val);
+ expo = sensor_settings->ctrls[EXPOSURE].val;
+ err = stv06xx_write_bridge(sd, 0x143d, expo & 0xff);
+ if (err < 0)
+ return err;
- return 0;
+ return stv06xx_write_bridge(sd, 0x143e, expo >> 8);
}
-static int st6422_set_brightness(struct gspca_dev *gspca_dev, __s32 val)
+static int st6422_start(struct sd *sd)
{
int err;
- struct sd *sd = (struct sd *) gspca_dev;
- s32 *sensor_settings = sd->sensor_priv;
+ struct cam *cam = &sd->gspca_dev.cam;
- sensor_settings[BRIGHTNESS_IDX] = val;
+ if (cam->cam_mode[sd->gspca_dev.curr_mode].priv)
+ err = stv06xx_write_bridge(sd, 0x1505, 0x0f);
+ else
+ err = stv06xx_write_bridge(sd, 0x1505, 0x02);
+ if (err < 0)
+ return err;
- if (!gspca_dev->streaming)
- return 0;
+ err = setbrightness(sd);
+ if (err < 0)
+ return err;
- /* val goes from 0 -> 31 */
- PDEBUG(D_V4L2, "Set brightness to %d", val);
- err = stv06xx_write_bridge(sd, 0x1432, val);
+ err = setcontrast(sd);
+ if (err < 0)
+ return err;
+
+ err = setexposure(sd);
+ if (err < 0)
+ return err;
+
+ err = setgain(sd);
if (err < 0)
return err;
@@ -328,125 +337,65 @@ static int st6422_set_brightness(struct gspca_dev *gspca_dev, __s32 val)
return (err < 0) ? err : 0;
}
-static int st6422_get_contrast(struct gspca_dev *gspca_dev, __s32 *val)
+static int st6422_stop(struct sd *sd)
{
- struct sd *sd = (struct sd *) gspca_dev;
- s32 *sensor_settings = sd->sensor_priv;
-
- *val = sensor_settings[CONTRAST_IDX];
-
- PDEBUG(D_V4L2, "Read contrast %d", *val);
+ PDEBUG(D_STREAM, "Halting stream");
return 0;
}
-static int st6422_set_contrast(struct gspca_dev *gspca_dev, __s32 val)
+static void st6422_set_brightness(struct gspca_dev *gspca_dev)
{
int err;
struct sd *sd = (struct sd *) gspca_dev;
- s32 *sensor_settings = sd->sensor_priv;
-
- sensor_settings[CONTRAST_IDX] = val;
- if (!gspca_dev->streaming)
- return 0;
-
- /* Val goes from 0 -> 15 */
- PDEBUG(D_V4L2, "Set contrast to %d\n", val);
- err = stv06xx_write_bridge(sd, 0x143a, 0xf0 | val);
- if (err < 0)
- return err;
+ err = setbrightness(sd);
/* commit settings */
- err = stv06xx_write_bridge(sd, 0x143f, 0x01);
- return (err < 0) ? err : 0;
-}
-
-static int st6422_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
-{
- struct sd *sd = (struct sd *) gspca_dev;
- s32 *sensor_settings = sd->sensor_priv;
-
- *val = sensor_settings[GAIN_IDX];
-
- PDEBUG(D_V4L2, "Read gain %d", *val);
+ if (err >= 0)
+ err = stv06xx_write_bridge(sd, 0x143f, 0x01);
- return 0;
+ gspca_dev->usb_err = err;
}
-static int st6422_set_gain(struct gspca_dev *gspca_dev, __s32 val)
+static void st6422_set_contrast(struct gspca_dev *gspca_dev)
{
int err;
struct sd *sd = (struct sd *) gspca_dev;
- s32 *sensor_settings = sd->sensor_priv;
-
- sensor_settings[GAIN_IDX] = val;
-
- if (!gspca_dev->streaming)
- return 0;
-
- PDEBUG(D_V4L2, "Set gain to %d", val);
- /* Set red, green, blue, gain */
- err = stv06xx_write_bridge(sd, 0x0509, val);
- if (err < 0)
- return err;
-
- err = stv06xx_write_bridge(sd, 0x050a, val);
- if (err < 0)
- return err;
-
- err = stv06xx_write_bridge(sd, 0x050b, val);
- if (err < 0)
- return err;
-
- /* 2 mystery writes */
- err = stv06xx_write_bridge(sd, 0x050c, 0x2a);
- if (err < 0)
- return err;
-
- err = stv06xx_write_bridge(sd, 0x050d, 0x01);
- if (err < 0)
- return err;
+ err = setcontrast(sd);
/* commit settings */
- err = stv06xx_write_bridge(sd, 0x143f, 0x01);
- return (err < 0) ? err : 0;
+ if (err >= 0)
+ err = stv06xx_write_bridge(sd, 0x143f, 0x01);
+
+ gspca_dev->usb_err = err;
}
-static int st6422_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
+static void st6422_set_gain(struct gspca_dev *gspca_dev)
{
+ int err;
struct sd *sd = (struct sd *) gspca_dev;
- s32 *sensor_settings = sd->sensor_priv;
- *val = sensor_settings[EXPOSURE_IDX];
+ err = setgain(sd);
- PDEBUG(D_V4L2, "Read exposure %d", *val);
+ /* commit settings */
+ if (err >= 0)
+ err = stv06xx_write_bridge(sd, 0x143f, 0x01);
- return 0;
+ gspca_dev->usb_err = err;
}
-static int st6422_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
+static void st6422_set_exposure(struct gspca_dev *gspca_dev)
{
int err;
struct sd *sd = (struct sd *) gspca_dev;
- s32 *sensor_settings = sd->sensor_priv;
-
- sensor_settings[EXPOSURE_IDX] = val;
- if (!gspca_dev->streaming)
- return 0;
-
- PDEBUG(D_V4L2, "Set exposure to %d\n", val);
- err = stv06xx_write_bridge(sd, 0x143d, val & 0xff);
- if (err < 0)
- return err;
-
- err = stv06xx_write_bridge(sd, 0x143e, val >> 8);
- if (err < 0)
- return err;
+ err = setexposure(sd);
/* commit settings */
- err = stv06xx_write_bridge(sd, 0x143f, 0x01);
- return (err < 0) ? err : 0;
+ if (err >= 0)
+ err = stv06xx_write_bridge(sd, 0x143f, 0x01);
+
+ gspca_dev->usb_err = err;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-28 04:12:08 +0000