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Commit d164460f authored by Abylay Ospan's avatar Abylay Ospan Committed by Mauro Carvalho Chehab
Browse files

[media] cx23885: Altera FPGA CI interface reworked 



It decreases I2C traffic.

Signed-off-by: default avatarAbylay Ospan <aospan@netup.ru>
Signed-off-by: default avatarIgor M. Liplianin <liplianin@netup.ru>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 10397523

drivers/media/video/cx23885/cx23885-dvb.c

+9 −9
Original line number Diff line number Diff line
@@ -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);