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V4L/DVB (13750): [Mantis] GPIO_CONTROL: Cache a given GPIO Bit Setup for a given event

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Signed-off-by: Manu Abraham <manu@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Manu Abraham 2009-12-04 05:15:38 -03:00 committed by Mauro Carvalho Chehab
parent ac23f4c86c
commit 4d5a28efda
2 changed files with 6 additions and 7 deletions
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2
drivers/media/dvb/mantis/mantis_common.h
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@ -137,7 +137,7 @@ struct mantis_pci {
u32 sub_device_id;
/* A12 A13 A14 */
int gpio_status;
u32 gpio_status;
struct mantis_ca *mantis_ca;
};

11
drivers/media/dvb/mantis/mantis_core.c
View File

@ -185,16 +185,15 @@ int mantis_core_exit(struct mantis_pci *mantis)
// Turn the given bit on or off.
void gpio_set_bits(struct mantis_pci *mantis, u32 bitpos, u8 value)
{
u32 currVal, newVal;
currVal = mmread(MANTIS_GPIF_ADDR);
u32 cur;
cur = mmread(MANTIS_GPIF_ADDR);
if (value)
newVal = currVal | (1 << bitpos);
mantis->gpio_status = cur | (1 << bitpos);
else
newVal = currVal & (~(1 << bitpos));
mantis->gpio_status = cur & (~(1 << bitpos));
mmwrite(newVal, MANTIS_GPIF_ADDR);
mmwrite(mantis->gpio_status, MANTIS_GPIF_ADDR);
mmwrite(0x00, MANTIS_GPIF_DOUT);
udelay(100);
}