diff options
| author | Márton Németh <nm127@freemail.hu> | 2009-11-09 07:10:46 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-12-05 18:41:47 -0200 |
| commit | 6763cc0e54e95eea356e15f9cd9a2f7b5ebeb7e8 (patch) | |
| tree | 1b33319908b9e5678bda5b12488019bd040364af | |
| parent | 4d0fc03a76d96fff0cf6c815702ae04896b74cde (diff) | |
V4L/DVB (13419): gspca - pac7302: Add debug register write interface.
Add debug register write interface to pac7302 to be able to set
for example the edge detect mode (bit 2 register 0x55) or the
test pattern (bit 0..3, register 0x72) and test overlay (bit 4,
register 0x72) from the user space. Only write of register
page 0 is supported by this patch.
Signed-off-by: Márton Németh <nm127@freemail.hu>
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
| -rw-r--r-- | drivers/media/video/gspca/pac7302.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/drivers/media/video/gspca/pac7302.c b/drivers/media/video/gspca/pac7302.c index 5cd02571bbf..e0fd767984b 100644 --- a/drivers/media/video/gspca/pac7302.c +++ b/drivers/media/video/gspca/pac7302.c @@ -68,6 +68,7 @@ #define MODULE_NAME "pac7302" +#include <media/v4l2-chip-ident.h> #include "gspca.h" MODULE_AUTHOR("Thomas Kaiser thomas@kaiser-linux.li"); @@ -1143,6 +1144,55 @@ static int sd_getvflip(struct gspca_dev *gspca_dev, __s32 *val) return 0; } +#ifdef CONFIG_VIDEO_ADV_DEBUG +static int sd_dbg_s_register(struct gspca_dev *gspca_dev, + struct v4l2_dbg_register *reg) +{ + int ret = -EINVAL; + __u8 index; + __u8 value; + + /* reg->reg: bit0..15: reserved for register index (wIndex is 16bit + long on the USB bus) + */ + if (reg->match.type == V4L2_CHIP_MATCH_HOST && + reg->match.addr == 0 && + (reg->reg < 0x000000ff) && + (reg->val <= 0x000000ff) + ) { + /* Currently writing to page 0 is only supported. */ + /* reg_w() only supports 8bit index */ + index = reg->reg & 0x000000ff; + value = reg->val & 0x000000ff; + + /* Note that there shall be no access to other page + by any other function between the page swith and + the actual register write */ + ret = reg_w(gspca_dev, 0xff, 0x00); /* page 0 */ + if (0 <= ret) + ret = reg_w(gspca_dev, index, value); + + if (0 <= ret) + ret = reg_w(gspca_dev, 0xdc, 0x01); + } + return ret; +} + +static int sd_chip_ident(struct gspca_dev *gspca_dev, + struct v4l2_dbg_chip_ident *chip) +{ + int ret = -EINVAL; + + if (chip->match.type == V4L2_CHIP_MATCH_HOST && + chip->match.addr == 0) { + chip->revision = 0; + chip->ident = V4L2_IDENT_UNKNOWN; + ret = 0; + } + return ret; +} +#endif + /* sub-driver description for pac7302 */ static struct sd_desc sd_desc = { .name = MODULE_NAME, @@ -1155,6 +1205,10 @@ static struct sd_desc sd_desc = { .stop0 = sd_stop0, .pkt_scan = sd_pkt_scan, .dq_callback = do_autogain, +#ifdef CONFIG_VIDEO_ADV_DEBUG + .set_register = sd_dbg_s_register, + .get_chip_ident = sd_chip_ident, +#endif }; /* -- module initialisation -- */ |