diff options
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/video/pvrusb2/pvrusb2-hdw.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/drivers/media/video/pvrusb2/pvrusb2-hdw.c b/drivers/media/video/pvrusb2/pvrusb2-hdw.c index c8ee379159e..20dc573bc15 100644 --- a/drivers/media/video/pvrusb2/pvrusb2-hdw.c +++ b/drivers/media/video/pvrusb2/pvrusb2-hdw.c @@ -1694,6 +1694,44 @@ static int pvr2_hdw_check_firmware(struct pvr2_hdw *hdw) return result == 0; } +struct pvr2_std_hack { + v4l2_std_id pat; /* Pattern to match */ + v4l2_std_id msk; /* Which bits we care about */ + v4l2_std_id std; /* What additional standards or default to set */ +}; + +/* This data structure labels specific combinations of standards from + tveeprom that we'll try to recognize. If we recognize one, then assume + a specified default standard to use. This is here because tveeprom only + tells us about available standards not the intended default standard (if + any) for the device in question. We guess the default based on what has + been reported as available. Note that this is only for guessing a + default - which can always be overridden explicitly - and if the user + has otherwise named a default then that default will always be used in + place of this table. */ +const static struct pvr2_std_hack std_eeprom_maps[] = { + { /* PAL(B/G) */ + .pat = V4L2_STD_B|V4L2_STD_GH, + .std = V4L2_STD_PAL_B|V4L2_STD_PAL_B1|V4L2_STD_PAL_G, + }, + { /* NTSC(M) */ + .pat = V4L2_STD_MN, + .std = V4L2_STD_NTSC_M, + }, + { /* PAL(I) */ + .pat = V4L2_STD_PAL_I, + .std = V4L2_STD_PAL_I, + }, + { /* SECAM(L/L') */ + .pat = V4L2_STD_SECAM_L|V4L2_STD_SECAM_LC, + .std = V4L2_STD_SECAM_L|V4L2_STD_SECAM_LC, + }, + { /* PAL(D/D1/K) */ + .pat = V4L2_STD_DK, + .std = V4L2_STD_PAL_D/V4L2_STD_PAL_D1|V4L2_STD_PAL_K, + }, +}; + static void pvr2_hdw_setup_std(struct pvr2_hdw *hdw) { char buf[40]; @@ -1732,6 +1770,27 @@ static void pvr2_hdw_setup_std(struct pvr2_hdw *hdw) return; } + { + unsigned int idx; + for (idx = 0; idx < ARRAY_SIZE(std_eeprom_maps); idx++) { + if (std_eeprom_maps[idx].msk ? + ((std_eeprom_maps[idx].pat ^ + hdw->std_mask_eeprom) & + std_eeprom_maps[idx].msk) : + (std_eeprom_maps[idx].pat != + hdw->std_mask_eeprom)) continue; + bcnt = pvr2_std_id_to_str(buf,sizeof(buf), + std_eeprom_maps[idx].std); + pvr2_trace(PVR2_TRACE_INIT, + "Initial video standard guessed as %.*s", + bcnt,buf); + hdw->std_mask_cur = std_eeprom_maps[idx].std; + hdw->std_dirty = !0; + pvr2_hdw_internal_find_stdenum(hdw); + return; + } + } + if (hdw->std_enum_cnt > 1) { // Autoselect the first listed standard hdw->std_enum_cur = 1; |