It decreases I2C traffic.
Signed-off-by: Abylay Ospan <aospan@xxxxxxxx>
Signed-off-by: Igor M. Liplianin <liplianin@xxxxxxxx>
---
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 6c144f7..53c2b6d 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);
--
1.7.1
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