[ARM] 4304/1: removes the unnecessary bit number from CKENnn_XXXX

This patch removes the unnecessary bit number from CKENnn_XXXX
definitions for PXA, so that

	CKEN0_PWM0 --> CKEN_PWM0
	CKEN1_PWM1 --> CKEN_PWM1
	...
	CKEN24_CAMERA --> CKEN_CAMERA

The reasons for the change of these defitions are:

1. they do not scale - they are currently valid for pxa2xx, but
definitely not valid for pxa3xx, e.g., pxa3xx has bit 3 for camera
instead of bit 24

2. they are unnecessary - the peripheral name within the definition
has already announced its usage, we don't need those bit numbers
to know which peripheral we are going to enable/disable clock for

3. they are inconvenient - think about this: a driver programmer
for pxa has to remember which bit in the CKEN register to turn
on/off

Another change in the patch is to make the definitions equal to its
clock bit index, so that

   #define CKEN_CAMERA  (24)

instead of

   #define CKEN_CAMERA  (1 << 24)

this change, however, will add a run-time bit shift operation in
pxa_set_cken(), but the benefit of this change is that it scales
when bit index exceeds 32, e.g., pxa3xx has two registers CKENA
and CKENB, totally 64 bit for this, suppose CAMERA clock enabling
bit is CKENB:10, one can simply define CKEN_CAMERA to be (32 + 10)
and so that pxa_set_cken() need minimum change to adapt to that.

Signed-off-by: eric miao <eric.y.miao@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

6 files changed, 15 insertions, 15 deletions

diff --git a/arch/arm/mach-pxa/generic.c b/arch/arm/mach-pxa/generic.c
index b8cb79f..64b08b7 100644
--- a/arch/arm/mach-pxa/generic.c
+++ b/arch/arm/mach-pxa/generic.c
@@ -164,9 +164,9 @@ void pxa_set_cken(int clock, int enable)
 	local_irq_save(flags);
 
 	if (enable)
-		CKEN |= clock;
+		CKEN |= (1 << clock);
 	else
-		CKEN &= ~clock;
+		CKEN &= ~(1 << clock);
 
 	local_irq_restore(flags);
 }
diff --git a/arch/arm/mach-pxa/lpd270.c b/arch/arm/mach-pxa/lpd270.c
index 8e27a64..e309766 100644
--- a/arch/arm/mach-pxa/lpd270.c
+++ b/arch/arm/mach-pxa/lpd270.c
@@ -234,7 +234,7 @@ static void lpd270_backlight_power(int on)
 {
 	if (on) {
 		pxa_gpio_mode(GPIO16_PWM0_MD);
-		pxa_set_cken(CKEN0_PWM0, 1);
+		pxa_set_cken(CKEN_PWM0, 1);
 		PWM_CTRL0 = 0;
 		PWM_PWDUTY0 = 0x3ff;
 		PWM_PERVAL0 = 0x3ff;
@@ -242,7 +242,7 @@ static void lpd270_backlight_power(int on)
 		PWM_CTRL0 = 0;
 		PWM_PWDUTY0 = 0x0;
 		PWM_PERVAL0 = 0x3FF;
-		pxa_set_cken(CKEN0_PWM0, 0);
+		pxa_set_cken(CKEN_PWM0, 0);
 	}
 }
 
diff --git a/arch/arm/mach-pxa/lubbock.c b/arch/arm/mach-pxa/lubbock.c
index 055de7f..6377b2e 100644
--- a/arch/arm/mach-pxa/lubbock.c
+++ b/arch/arm/mach-pxa/lubbock.c
@@ -220,7 +220,7 @@ static struct resource pxa_ssp_resources[] = {
 
 static struct pxa2xx_spi_master pxa_ssp_master_info = {
 	.ssp_type	= PXA25x_SSP,
-	.clock_enable	= CKEN3_SSP,
+	.clock_enable	= CKEN_SSP,
 	.num_chipselect	= 0,
 };
 
diff --git a/arch/arm/mach-pxa/mainstone.c b/arch/arm/mach-pxa/mainstone.c
index 56d94d8..ed99a81 100644
--- a/arch/arm/mach-pxa/mainstone.c
+++ b/arch/arm/mach-pxa/mainstone.c
@@ -266,7 +266,7 @@ static void mainstone_backlight_power(int on)
 {
 	if (on) {
 		pxa_gpio_mode(GPIO16_PWM0_MD);
-		pxa_set_cken(CKEN0_PWM0, 1);
+		pxa_set_cken(CKEN_PWM0, 1);
 		PWM_CTRL0 = 0;
 		PWM_PWDUTY0 = 0x3ff;
 		PWM_PERVAL0 = 0x3ff;
@@ -274,7 +274,7 @@ static void mainstone_backlight_power(int on)
 		PWM_CTRL0 = 0;
 		PWM_PWDUTY0 = 0x0;
 		PWM_PERVAL0 = 0x3FF;
-		pxa_set_cken(CKEN0_PWM0, 0);
+		pxa_set_cken(CKEN_PWM0, 0);
 	}
 }
 
diff --git a/arch/arm/mach-pxa/pxa27x.c b/arch/arm/mach-pxa/pxa27x.c
index 74eeada..c64bab4 100644
--- a/arch/arm/mach-pxa/pxa27x.c
+++ b/arch/arm/mach-pxa/pxa27x.c
@@ -140,9 +140,9 @@ void pxa_cpu_pm_enter(suspend_state_t state)
 	extern void pxa_cpu_resume(void);
 
 	if (state == PM_SUSPEND_STANDBY)
-		CKEN = CKEN22_MEMC | CKEN9_OSTIMER | CKEN16_LCD |CKEN0_PWM0;
+		CKEN = CKEN_MEMC | CKEN_OSTIMER | CKEN_LCD | CKEN_PWM0;
 	else
-		CKEN = CKEN22_MEMC | CKEN9_OSTIMER;
+		CKEN = CKEN_MEMC | CKEN_OSTIMER;
 
 	/* ensure voltage-change sequencer not initiated, which hangs */
 	PCFR &= ~PCFR_FVC;
diff --git a/arch/arm/mach-pxa/ssp.c b/arch/arm/mach-pxa/ssp.c
index 6cc2027..71766ac 100644
--- a/arch/arm/mach-pxa/ssp.c
+++ b/arch/arm/mach-pxa/ssp.c
@@ -52,13 +52,13 @@ struct ssp_info_ {
  */
 static const struct ssp_info_ ssp_info[PXA_SSP_PORTS] = {
 #if defined (CONFIG_PXA27x)
-	{IRQ_SSP,	CKEN23_SSP1},
-	{IRQ_SSP2,	CKEN3_SSP2},
-	{IRQ_SSP3,	CKEN4_SSP3},
+	{IRQ_SSP,	CKEN_SSP1},
+	{IRQ_SSP2,	CKEN_SSP2},
+	{IRQ_SSP3,	CKEN_SSP3},
 #else
-	{IRQ_SSP,	CKEN3_SSP},
-	{IRQ_NSSP,	CKEN9_NSSP},
-	{IRQ_ASSP,	CKEN10_ASSP},
+	{IRQ_SSP,	CKEN_SSP},
+	{IRQ_NSSP,	CKEN_NSSP},
+	{IRQ_ASSP,	CKEN_ASSP},
 #endif
 };