diff options
| author | Abylay Ospan | 2011-01-02 09:10:00 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab | 2011-03-22 04:54:07 -0300 |
| commit | d164460f897e2ae8c48ca28c763bb1233d180e7e (patch) | |
| tree | d3fdc11348fbff63a27ff2721a67d6915a3f0063 | |
| parent | 1039752353f1308bcd594a79196f60a22d45975d (diff) | |
[media] cx23885: Altera FPGA CI interface reworked
It decreases I2C traffic.
Signed-off-by: Abylay Ospan <aospan@netup.ru>
Signed-off-by: Igor M. Liplianin <liplianin@netup.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
| -rw-r--r-- | drivers/media/video/cx23885/cx23885-dvb.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/drivers/media/video/cx23885/cx23885-dvb.c b/drivers/media/video/cx23885/cx23885-dvb.c index cf36b9b4794e..c0e665506750 100644 --- a/drivers/media/video/cx23885/cx23885-dvb.c +++ b/drivers/media/video/cx23885/cx23885-dvb.c @@ -620,29 +620,29 @@ int netup_altera_fpga_rw(void *device, int flag, int data, int read) { struct cx23885_dev *dev = (struct cx23885_dev *)device; unsigned long timeout = jiffies + msecs_to_jiffies(1); - int mem = 0; + uint32_t mem = 0; - cx_set(MC417_RWD, ALT_RD | ALT_WR | ALT_CS); + mem = cx_read(MC417_RWD); if (read) cx_set(MC417_OEN, ALT_DATA); else { cx_clear(MC417_OEN, ALT_DATA);/* D0-D7 out */ - mem = cx_read(MC417_RWD); mem &= ~ALT_DATA; mem |= (data & ALT_DATA); - cx_write(MC417_RWD, mem); } if (flag) - cx_set(MC417_RWD, ALT_AD_RG);/* ADDR */ + mem |= ALT_AD_RG; else - cx_clear(MC417_RWD, ALT_AD_RG);/* VAL */ + mem &= ~ALT_AD_RG; - cx_clear(MC417_RWD, ALT_CS);/* ~CS */ + mem &= ~ALT_CS; if (read) - cx_clear(MC417_RWD, ALT_RD); + mem = (mem & ~ALT_RD) | ALT_WR; else - cx_clear(MC417_RWD, ALT_WR); + mem = (mem & ~ALT_WR) | ALT_RD; + + cx_write(MC417_RWD, mem); /* start RW cycle */ for (;;) { mem = cx_read(MC417_RWD); |