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[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>
This commit is contained in:
Abylay Ospan 2011-01-02 09:10:00 -03:00 committed by Mauro Carvalho Chehab
parent 1039752353
commit d164460f89
1 changed files with 9 additions and 9 deletions
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18
drivers/media/video/cx23885/cx23885-dvb.c
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@ -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);