diff options
Diffstat (limited to 'drivers/input/touchscreen')
| -rw-r--r-- | drivers/input/touchscreen/corgi_ts.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/drivers/input/touchscreen/corgi_ts.c b/drivers/input/touchscreen/corgi_ts.c index 3f8b61cfbc37..9fcc7ca2c208 100644 --- a/drivers/input/touchscreen/corgi_ts.c +++ b/drivers/input/touchscreen/corgi_ts.c @@ -53,8 +53,8 @@ struct corgi_ts { #define SyncHS() while((STATUS_HSYNC) == 0); while((STATUS_HSYNC) != 0); #define CCNT(a) asm volatile ("mrc p14, 0, %0, C1, C0, 0" : "=r"(a)) -#define CCNT_ON() {int pmnc = 1; asm volatile ("mcr p14, 0, %0, C0, C0, 0" : : "r"(pmnc));} -#define CCNT_OFF() {int pmnc = 0; asm volatile ("mcr p14, 0, %0, C0, C0, 0" : : "r"(pmnc));} +#define PMNC_GET(x) asm volatile ("mrc p14, 0, %0, C0, C0, 0" : "=r"(x)) +#define PMNC_SET(x) asm volatile ("mcr p14, 0, %0, C0, C0, 0" : : "r"(x)) #define WAIT_HS_400_VGA 7013U // 17.615us #define WAIT_HS_400_QVGA 16622U // 41.750us @@ -96,14 +96,17 @@ static unsigned long calc_waittime(void) static int sync_receive_data_send_cmd(int doRecive, int doSend, unsigned int address, unsigned long wait_time) { + unsigned long timer1 = 0, timer2, pmnc = 0; int pos = 0; - unsigned long timer1 = 0, timer2; int dosleep; dosleep = !w100fb_get_blanking(); if (dosleep && doSend) { - CCNT_ON(); + PMNC_GET(pmnc); + if (!(pmnc & 0x01)) + PMNC_SET(pmnc | 0x01); + /* polling HSync */ SyncHS(); /* get CCNT */ @@ -134,8 +137,8 @@ static int sync_receive_data_send_cmd(int doRecive, int doSend, unsigned int add CCNT(timer2); } corgi_ssp_ads7846_put(cmd); - if (dosleep) - CCNT_OFF(); + if (dosleep && !(pmnc & 0x01)) + PMNC_SET(pmnc); } return pos; } |