ARM: pxa: add clk support in gpio driver

Support clk in gpio driver. There's no gpio clock in PXA25x and PXA27x.
So use dummy clk instead. And move the gpio edge initialization into
gpio driver for arch-mmp.

Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>

3 files changed, 6 insertions, 27 deletions

diff --git a/arch/arm/mach-mmp/mmp2.c b/arch/arm/mach-mmp/mmp2.c
index 1ed222d3e22b..617c60a170a4 100644
--- a/arch/arm/mach-mmp/mmp2.c
+++ b/arch/arm/mach-mmp/mmp2.c
@@ -93,18 +93,9 @@ void mmp2_clear_pmic_int(void)
         __raw_writel(data, mfpr_pmic);
 }
 
-static void __init mmp2_init_gpio(void)
-{
-        int i;
-
-        /* enable GPIO clock */
-        __raw_writel(APBC_APBCLK | APBC_FNCLK, APBC_MMP2_GPIO);
-}
-
 void __init mmp2_init_irq(void)
 {
         mmp2_init_icu();
-        mmp2_init_gpio();
 }
 
 static void sdhc_clk_enable(struct clk *clk)
@@ -141,6 +132,7 @@ static APBC_CLK(twsi3, MMP2_TWSI3, 0, 26000000);
 static APBC_CLK(twsi4, MMP2_TWSI4, 0, 26000000);
 static APBC_CLK(twsi5, MMP2_TWSI5, 0, 26000000);
 static APBC_CLK(twsi6, MMP2_TWSI6, 0, 26000000);
+static APBC_CLK(gpio, MMP2_GPIO, 0, 26000000);
 
 static APMU_CLK(nand, NAND, 0xbf, 100000000);
 static APMU_CLK_OPS(sdh0, SDH0, 0x1b, 200000000, &sdhc_clk_ops);
@@ -160,6 +152,7 @@ static struct clk_lookup mmp2_clkregs[] = {
         INIT_CLKREG(&clk_twsi5, "pxa2xx-i2c.4", NULL),
         INIT_CLKREG(&clk_twsi6, "pxa2xx-i2c.5", NULL),
         INIT_CLKREG(&clk_nand, "pxa3xx-nand", NULL),
+        INIT_CLKREG(&clk_gpio, "pxa-gpio", NULL),
         INIT_CLKREG(&clk_sdh0, "sdhci-pxav3.0", "PXA-SDHCLK"),
         INIT_CLKREG(&clk_sdh1, "sdhci-pxav3.1", "PXA-SDHCLK"),
         INIT_CLKREG(&clk_sdh2, "sdhci-pxav3.2", "PXA-SDHCLK"),
diff --git a/arch/arm/mach-mmp/pxa168.c b/arch/arm/mach-mmp/pxa168.c
index fefdfe59c07c..84245035f351 100644
--- a/arch/arm/mach-mmp/pxa168.c
+++ b/arch/arm/mach-mmp/pxa168.c
@@ -43,18 +43,9 @@ static struct mfp_addr_map pxa168_mfp_addr_map[] __initdata =
         MFP_ADDR_END,
 };
 
-static void __init pxa168_init_gpio(void)
-{
-        int i;
-
-        /* enable GPIO clock */
-        __raw_writel(APBC_APBCLK | APBC_FNCLK, APBC_PXA168_GPIO);
-}
-
 void __init pxa168_init_irq(void)
 {
         icu_init_irq();
-        pxa168_init_gpio();
 }
 
 /* APB peripheral clocks */
@@ -72,6 +63,7 @@ static APBC_CLK(ssp2, PXA168_SSP2, 4, 0);
 static APBC_CLK(ssp3, PXA168_SSP3, 4, 0);
 static APBC_CLK(ssp4, PXA168_SSP4, 4, 0);
 static APBC_CLK(ssp5, PXA168_SSP5, 4, 0);
+static APBC_CLK(gpio, PXA168_GPIO, 0, 13000000);
 static APBC_CLK(keypad, PXA168_KPC, 0, 32000);
 
 static APMU_CLK(nand, NAND, 0x19b, 156000000);
@@ -97,6 +89,7 @@ static struct clk_lookup pxa168_clkregs[] = {
         INIT_CLKREG(&clk_ssp5, "pxa168-ssp.4", NULL),
         INIT_CLKREG(&clk_nand, "pxa3xx-nand", NULL),
         INIT_CLKREG(&clk_lcd, "pxa168-fb", NULL),
+        INIT_CLKREG(&clk_gpio, "pxa-gpio", NULL),
         INIT_CLKREG(&clk_keypad, "pxa27x-keypad", NULL),
         INIT_CLKREG(&clk_eth, "pxa168-eth", "MFUCLK"),
         INIT_CLKREG(&clk_usb, "pxa168-ehci", "PXA168-USBCLK"),
diff --git a/arch/arm/mach-mmp/pxa910.c b/arch/arm/mach-mmp/pxa910.c
index 7b992ced095c..3241a25784d0 100644
--- a/arch/arm/mach-mmp/pxa910.c
+++ b/arch/arm/mach-mmp/pxa910.c
@@ -77,18 +77,9 @@ static struct mfp_addr_map pxa910_mfp_addr_map[] __initdata =
         MFP_ADDR_END,
 };
 
-static void __init pxa910_init_gpio(void)
-{
-        int i;
-
-        /* enable GPIO clock */
-        __raw_writel(APBC_APBCLK | APBC_FNCLK, APBC_PXA910_GPIO);
-}
-
 void __init pxa910_init_irq(void)
 {
         icu_init_irq();
-        pxa910_init_gpio();
 }
 
 /* APB peripheral clocks */
@@ -100,6 +91,7 @@ static APBC_CLK(pwm1, PXA910_PWM1, 1, 13000000);
 static APBC_CLK(pwm2, PXA910_PWM2, 1, 13000000);
 static APBC_CLK(pwm3, PXA910_PWM3, 1, 13000000);
 static APBC_CLK(pwm4, PXA910_PWM4, 1, 13000000);
+static APBC_CLK(gpio, PXA910_GPIO, 0, 13000000);
 
 static APMU_CLK(nand, NAND, 0x19b, 156000000);
 static APMU_CLK(u2o, USB, 0x1b, 480000000);
@@ -115,6 +107,7 @@ static struct clk_lookup pxa910_clkregs[] = {
         INIT_CLKREG(&clk_pwm3, "pxa910-pwm.2", NULL),
         INIT_CLKREG(&clk_pwm4, "pxa910-pwm.3", NULL),
         INIT_CLKREG(&clk_nand, "pxa3xx-nand", NULL),
+        INIT_CLKREG(&clk_gpio, "pxa-gpio", NULL),
         INIT_CLKREG(&clk_u2o, "pxa-u2o", "U2OCLK"),
 };