diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2012-11-29 06:39:49 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-12-21 12:41:29 -0200 |
| commit | 143dd34597a2e051cb0938b28387b94742d4e4e4 (patch) | |
| tree | ec7a21de910561a6efdf4d3597c14767f98e2a78 /drivers/media/usb/gspca | |
| parent | 04881127340c43fc5b8dbc2c381c1928ee22559e (diff) | |
[media] gspca-pac207: Add a led_invert module parameter
Some cams have their led connected in such a way that on = off and visa versa
unfortunately we cannot tell this from the driver in any way, so add a module
parameter for this.
Reported-by: Yuri Glushkov <yglushkov@yahoo.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/usb/gspca')
| -rw-r--r-- | drivers/media/usb/gspca/pac207.c | 32 |
1 files changed, 26 insertions, 6 deletions
diff --git a/drivers/media/usb/gspca/pac207.c b/drivers/media/usb/gspca/pac207.c index d236d1791f7..1f253dfebe4 100644 --- a/drivers/media/usb/gspca/pac207.c +++ b/drivers/media/usb/gspca/pac207.c @@ -55,6 +55,11 @@ MODULE_LICENSE("GPL"); #define PAC207_AUTOGAIN_DEADZONE 30 +/* global parameters */ +static int led_invert; +module_param(led_invert, int, 0644); +MODULE_PARM_DESC(led_invert, "Invert led"); + /* specific webcam descriptor */ struct sd { struct gspca_dev gspca_dev; /* !! must be the first item */ @@ -187,10 +192,14 @@ static int sd_config(struct gspca_dev *gspca_dev, /* this function is called at probe and resume time */ static int sd_init(struct gspca_dev *gspca_dev) { - pac207_write_reg(gspca_dev, 0x41, 0x00); - /* Bit_0=Image Format, - * Bit_1=LED, - * Bit_2=Compression test mode enable */ + u8 mode; + + /* mode: Image Format (Bit 0), LED (1), Compr. test mode (2) */ + if (led_invert) + mode = 0x02; + else + mode = 0x00; + pac207_write_reg(gspca_dev, 0x41, mode); pac207_write_reg(gspca_dev, 0x0f, 0x00); /* Power Control */ return gspca_dev->usb_err; @@ -303,7 +312,11 @@ static int sd_start(struct gspca_dev *gspca_dev) pac207_write_reg(gspca_dev, 0x02, v4l2_ctrl_g_ctrl(gspca_dev->exposure)); /* PXCK = 12MHz /n */ - mode = 0x02; /* Image Format (Bit 0), LED (1), Compr. test mode (2) */ + /* mode: Image Format (Bit 0), LED (1), Compr. test mode (2) */ + if (led_invert) + mode = 0x00; + else + mode = 0x02; if (gspca_dev->width == 176) { /* 176x144 */ mode |= 0x01; PDEBUG(D_STREAM, "pac207_start mode 176x144"); @@ -325,8 +338,15 @@ static int sd_start(struct gspca_dev *gspca_dev) static void sd_stopN(struct gspca_dev *gspca_dev) { + u8 mode; + + /* mode: Image Format (Bit 0), LED (1), Compr. test mode (2) */ + if (led_invert) + mode = 0x02; + else + mode = 0x00; pac207_write_reg(gspca_dev, 0x40, 0x00); /* Stop ISO pipe */ - pac207_write_reg(gspca_dev, 0x41, 0x00); /* Turn of LED */ + pac207_write_reg(gspca_dev, 0x41, mode); /* Turn off LED */ pac207_write_reg(gspca_dev, 0x0f, 0x00); /* Power Control */ } |