V4L/DVB: gspca - sn9c20x: Add upside down detection
Add support for detecting webcams that are mounted
upside down in laptops. Currently the only two known
are two MSI modesl using the 0c45:624f.
Signed-off-by: Brian Johnson <brijohn@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/gspca/sn9c20x.c b/drivers/media/video/gspca/sn9c20x.c
index 825d5b8..06c75db 100644
--- a/drivers/media/video/gspca/sn9c20x.c
+++ b/drivers/media/video/gspca/sn9c20x.c
@@ -27,6 +27,7 @@
#include "jpeg.h"
#include <media/v4l2-chip-ident.h>
+#include <linux/dmi.h>
MODULE_AUTHOR("Brian Johnson <brijohn@gmail.com>, "
"microdia project <microdia@googlegroups.com>");
@@ -55,6 +56,7 @@
/* camera flags */
#define HAS_BUTTON 0x1
#define LED_REVERSE 0x2 /* some cameras unset gpio to turn on leds */
+#define FLIP_DETECT 0x4
/* specific webcam descriptor */
struct sd {
@@ -127,6 +129,25 @@
static int sd_setautoexposure(struct gspca_dev *gspca_dev, s32 val);
static int sd_getautoexposure(struct gspca_dev *gspca_dev, s32 *val);
+static const struct dmi_system_id flip_dmi_table[] = {
+ {
+ .ident = "MSI MS-1034",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "MICRO-STAR INT'L CO.,LTD."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "MS-1034"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "0341")
+ }
+ },
+ {
+ .ident = "MSI MS-1632",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "MSI"),
+ DMI_MATCH(DMI_BOARD_NAME, "MS-1632")
+ }
+ },
+ {}
+};
+
static const struct ctrl sd_ctrls[] = {
{
#define BRIGHTNESS_IDX 0
@@ -1496,17 +1517,26 @@
static int set_hvflip(struct gspca_dev *gspca_dev)
{
- u8 value, tslb;
+ u8 value, tslb, hflip, vflip;
u16 value2;
struct sd *sd = (struct sd *) gspca_dev;
+
+ if ((sd->flags & FLIP_DETECT) && dmi_check_system(flip_dmi_table)) {
+ hflip = !sd->hflip;
+ vflip = !sd->vflip;
+ } else {
+ hflip = sd->hflip;
+ vflip = sd->vflip;
+ }
+
switch (sd->sensor) {
case SENSOR_OV9650:
i2c_r1(gspca_dev, 0x1e, &value);
value &= ~0x30;
tslb = 0x01;
- if (sd->hflip)
+ if (hflip)
value |= 0x20;
- if (sd->vflip) {
+ if (vflip) {
value |= 0x10;
tslb = 0x49;
}
@@ -1517,9 +1547,9 @@
case SENSOR_MT9V011:
i2c_r2(gspca_dev, 0x20, &value2);
value2 &= ~0xc0a0;
- if (sd->hflip)
+ if (hflip)
value2 |= 0x8080;
- if (sd->vflip)
+ if (vflip)
value2 |= 0x4020;
i2c_w2(gspca_dev, 0x20, value2);
break;
@@ -1527,18 +1557,18 @@
case SENSOR_MT9V112:
i2c_r2(gspca_dev, 0x20, &value2);
value2 &= ~0x0003;
- if (sd->hflip)
+ if (hflip)
value2 |= 0x0002;
- if (sd->vflip)
+ if (vflip)
value2 |= 0x0001;
i2c_w2(gspca_dev, 0x20, value2);
break;
case SENSOR_HV7131R:
i2c_r1(gspca_dev, 0x01, &value);
value &= ~0x03;
- if (sd->vflip)
+ if (vflip)
value |= 0x01;
- if (sd->hflip)
+ if (hflip)
value |= 0x02;
i2c_w1(gspca_dev, 0x01, value);
break;
@@ -2371,7 +2401,7 @@
{USB_DEVICE(0x0c45, 0x6248), SN9C20X(OV9655, 0x30, 0)},
{USB_DEVICE(0x0c45, 0x624e), SN9C20X(SOI968, 0x30,
(HAS_BUTTON | LED_REVERSE))},
- {USB_DEVICE(0x0c45, 0x624f), SN9C20X(OV9650, 0x30, 0)},
+ {USB_DEVICE(0x0c45, 0x624f), SN9C20X(OV9650, 0x30, FLIP_DETECT)},
{USB_DEVICE(0x0c45, 0x6251), SN9C20X(OV9650, 0x30, 0)},
{USB_DEVICE(0x0c45, 0x6253), SN9C20X(OV9650, 0x30, 0)},
{USB_DEVICE(0x0c45, 0x6260), SN9C20X(OV7670, 0x21, 0)},