diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/video/gspca/xirlink_cit.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/drivers/media/video/gspca/xirlink_cit.c b/drivers/media/video/gspca/xirlink_cit.c index 3b503b5..b13ecba 100644 --- a/drivers/media/video/gspca/xirlink_cit.c +++ b/drivers/media/video/gspca/xirlink_cit.c @@ -1659,7 +1659,19 @@ static int cit_start_model0(struct gspca_dev *gspca_dev) static int cit_start_model1(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; - int i, clock_div = 0; + int clock_div = 7; /* 0=30 1=25 2=20 3=15 4=12 5=7.5 6=6 7=3fps ?? */ + int fps[8] = { 30, 25, 20, 15, 12, 8, 6, 3 }; + int i, packet_size; + + packet_size = cit_get_packet_size(gspca_dev); + if (packet_size < 0) + return packet_size; + + while (clock_div > 3 && + 1000 * packet_size > + gspca_dev->width * gspca_dev->height * + fps[clock_div - 1] * 3 / 2) + clock_div--; cit_read_reg(gspca_dev, 0x0128); cit_read_reg(gspca_dev, 0x0100); @@ -1767,7 +1779,6 @@ static int cit_start_model1(struct gspca_dev *gspca_dev) cit_write_reg(gspca_dev, 0x0b, 0x011d); cit_write_reg(gspca_dev, 0x00, 0x011e); /* Same everywhere */ cit_write_reg(gspca_dev, 0x00, 0x0129); - clock_div = 3; break; case 176: /* 176x144 */ cit_write_reg(gspca_dev, 0xb0, 0x0103); @@ -1777,7 +1788,6 @@ static int cit_start_model1(struct gspca_dev *gspca_dev) cit_write_reg(gspca_dev, 0x0d, 0x011d); cit_write_reg(gspca_dev, 0x00, 0x011e); /* Same everywhere */ cit_write_reg(gspca_dev, 0x03, 0x0129); - clock_div = 3; break; case 352: /* 352x288 */ cit_write_reg(gspca_dev, 0xb0, 0x0103); @@ -1787,7 +1797,6 @@ static int cit_start_model1(struct gspca_dev *gspca_dev) cit_write_reg(gspca_dev, 0x05, 0x011d); cit_write_reg(gspca_dev, 0x00, 0x011e); /* Same everywhere */ cit_write_reg(gspca_dev, 0x00, 0x0129); - clock_div = 5; break; } @@ -1852,6 +1861,7 @@ static int cit_start_model1(struct gspca_dev *gspca_dev) cit_write_reg(gspca_dev, 0x01, 0x0100); /* LED On */ cit_write_reg(gspca_dev, clock_div, 0x0111); + PDEBUG(D_PROBE, "Using clockdiv: %d", clock_div); return 0; } |