Clocklib: Provide for GPIO 12 clock on PXA

Signed-off-by: Ian Molton <spyro@f2s.com>

2 files changed, 33 insertions, 0 deletions

diff --git a/arch/arm/mach-pxa/clock.h b/arch/arm/mach-pxa/clock.h
index 83cbfaba485d..32d0c074b351 100644
--- a/arch/arm/mach-pxa/clock.h
+++ b/arch/arm/mach-pxa/clock.h
@@ -47,6 +47,15 @@ struct clk {
                 .other  = _other,                       \
         }
 
+#define INIT_CLK(_name, _ops, _rate, _delay, _dev)      \
+        {                                               \
+                .name   = _name,                        \
+                .dev    = _dev,                         \
+                .ops    = _ops,                         \
+                .rate   = _rate,                        \
+                .delay  = _delay,                       \
+        }
+
 extern const struct clkops clk_cken_ops;
 
 void clk_cken_enable(struct clk *clk);
diff --git a/arch/arm/mach-pxa/pxa25x.c b/arch/arm/mach-pxa/pxa25x.c
index 90b441f5df5a..034d3a6c31d8 100644
--- a/arch/arm/mach-pxa/pxa25x.c
+++ b/arch/arm/mach-pxa/pxa25x.c
@@ -109,6 +109,29 @@ static const struct clkops clk_pxa25x_lcd_ops = {
         .getrate        = clk_pxa25x_lcd_getrate,
 };
 
+static unsigned long gpio12_config_32k[] = {
+        GPIO12_32KHz,
+};
+
+static unsigned long gpio12_config_gpio[] = {
+        GPIO12_GPIO,
+};
+
+static void clk_gpio12_enable(struct clk *clk)
+{
+        pxa2xx_mfp_config(gpio12_config_32k, 1);
+}
+
+static void clk_gpio12_disable(struct clk *clk)
+{
+        pxa2xx_mfp_config(gpio12_config_gpio, 1);
+}
+
+static const struct clkops clk_pxa25x_gpio12_ops = {
+        .enable         = clk_gpio12_enable,
+        .disable        = clk_gpio12_disable,
+};
+
 /*
  * 3.6864MHz -> OST, GPIO, SSP, PWM, PLLs (95.842MHz, 147.456MHz)
  * 95.842MHz -> MMC 19.169MHz, I2C 31.949MHz, FICP 47.923MHz, USB 47.923MHz
@@ -128,6 +151,7 @@ static struct clk pxa25x_clks[] = {
         INIT_CKEN("UARTCLK", BTUART, 14745600, 1, &pxa_device_btuart.dev),
         INIT_CKEN("UARTCLK", STUART, 14745600, 1, NULL),
         INIT_CKEN("UDCCLK", USB, 47923000, 5, &pxa25x_device_udc.dev),
+        INIT_CLK("GPIO12_CLK", &clk_pxa25x_gpio12_ops, 32768, 0, NULL),
         INIT_CKEN("MMCCLK", MMC, 19169000, 0, &pxa_device_mci.dev),
         INIT_CKEN("I2CCLK", I2C, 31949000, 0, &pxa_device_i2c.dev),