[media] gspca - sn9c20x: Set the i2c interface speed
The i2c interface speed was set to 400 Kb/s while it is 100 Kb/s
for most sensors.
Signed-off-by: Jean-François Moine <moinejf@free.fr>
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 0958a93..c5b42e4 100644
--- a/drivers/media/video/gspca/sn9c20x.c
+++ b/drivers/media/video/gspca/sn9c20x.c
@@ -105,6 +105,7 @@
u8 exposure_step;
u8 i2c_addr;
+ u8 i2c_intf;
u8 sensor;
u8 hstart;
u8 vstart;
@@ -1168,7 +1169,7 @@
* from the point of view of the bridge, the length
* includes the address
*/
- row[0] = 0x81 | (2 << 4);
+ row[0] = sd->i2c_intf | (2 << 4);
row[1] = sd->i2c_addr;
row[2] = reg;
row[3] = val;
@@ -1198,7 +1199,7 @@
* from the point of view of the bridge, the length
* includes the address
*/
- row[0] = 0x81 | (3 << 4);
+ row[0] = sd->i2c_intf | (3 << 4);
row[1] = sd->i2c_addr;
row[2] = reg;
row[3] = val >> 8;
@@ -1224,7 +1225,7 @@
struct sd *sd = (struct sd *) gspca_dev;
u8 row[8];
- row[0] = 0x81 | (1 << 4);
+ row[0] = sd->i2c_intf | (1 << 4);
row[1] = sd->i2c_addr;
row[2] = reg;
row[3] = 0;
@@ -1233,7 +1234,7 @@
row[6] = 0;
row[7] = 0x10;
i2c_w(gspca_dev, row);
- row[0] = 0x81 | (1 << 4) | 0x02;
+ row[0] = sd->i2c_intf | (1 << 4) | 0x02;
row[2] = 0;
i2c_w(gspca_dev, row);
reg_r(gspca_dev, 0x10c2, 5);
@@ -1245,7 +1246,7 @@
struct sd *sd = (struct sd *) gspca_dev;
u8 row[8];
- row[0] = 0x81 | (1 << 4);
+ row[0] = sd->i2c_intf | (1 << 4);
row[1] = sd->i2c_addr;
row[2] = reg;
row[3] = 0;
@@ -1254,7 +1255,7 @@
row[6] = 0;
row[7] = 0x10;
i2c_w(gspca_dev, row);
- row[0] = 0x81 | (2 << 4) | 0x02;
+ row[0] = sd->i2c_intf | (2 << 4) | 0x02;
row[2] = 0;
i2c_w(gspca_dev, row);
reg_r(gspca_dev, 0x10c2, 5);
@@ -1642,7 +1643,8 @@
static void set_exposure(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
- u8 exp[8] = {0x81, sd->i2c_addr, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1e};
+ u8 exp[8] = {sd->i2c_intf, sd->i2c_addr,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x1e};
int expo;
expo = sd->ctrls[EXPOSURE].val;
@@ -1680,7 +1682,8 @@
static void set_gain(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
- u8 gain[8] = {0x81, sd->i2c_addr, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1d};
+ u8 gain[8] = {sd->i2c_intf, sd->i2c_addr,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x1d};
int g;
g = sd->ctrls[GAIN].val;
@@ -1828,6 +1831,7 @@
sd->sensor = id->driver_info >> 8;
sd->i2c_addr = id->driver_info;
sd->flags = id->driver_info >> 16;
+ sd->i2c_intf = 0x80; /* i2c 100 Kb/s */
switch (sd->sensor) {
case SENSOR_MT9M112:
@@ -1841,6 +1845,9 @@
cam->cam_mode = mono_mode;
cam->nmodes = ARRAY_SIZE(mono_mode);
break;
+ case SENSOR_HV7131R:
+ sd->i2c_intf = 0x81; /* i2c 400 Kb/s */
+ /* fall thru */
default:
cam->cam_mode = vga_mode;
cam->nmodes = ARRAY_SIZE(vga_mode);