[ARM] 5201/1: PXA3xx: Add support for power i2c bus

Add power I2C support for PXA3xx processors

Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 45 insertions, 0 deletions

diff --git a/arch/arm/mach-pxa/pxa3xx.c b/arch/arm/mach-pxa/pxa3xx.c
index 03cbc38103ed..b3cd5d0b0f35 100644
--- a/arch/arm/mach-pxa/pxa3xx.c
+++ b/arch/arm/mach-pxa/pxa3xx.c
@@ -203,6 +203,19 @@ static const struct clkops clk_pout_ops = {
         .disable        = clk_pout_disable,
 };
 
+static void clk_dummy_enable(struct clk *clk)
+{
+}
+
+static void clk_dummy_disable(struct clk *clk)
+{
+}
+
+static const struct clkops clk_dummy_ops = {
+        .enable         = clk_dummy_enable,
+        .disable        = clk_dummy_disable,
+};
+
 static struct clk pxa3xx_clks[] = {
         {
                 .name           = "CLK_POUT",
@@ -211,6 +224,13 @@ static struct clk pxa3xx_clks[] = {
                 .delay          = 70,
         },
 
+        /* Power I2C clock is always on */
+        {
+                .name           = "I2CCLK",
+                .ops            = &clk_dummy_ops,
+                .dev            = &pxa3xx_device_i2c_power.dev,
+        },
+
         PXA3xx_CK("LCDCLK",  LCD,    &clk_pxa3xx_hsio_ops, &pxa_device_fb.dev),
         PXA3xx_CK("CAMCLK",  CAMERA, &clk_pxa3xx_hsio_ops, NULL),
         PXA3xx_CK("AC97CLK", AC97,   &clk_pxa3xx_ac97_ops, NULL),
@@ -509,6 +529,30 @@ void __init pxa3xx_init_irq(void)
  * device registration specific to PXA3xx.
  */
 
+static struct resource i2c_power_resources[] = {
+        {
+                .start  = 0x40f500c0,
+                .end    = 0x40f500d3,
+                .flags  = IORESOURCE_MEM,
+        }, {
+                .start  = IRQ_PWRI2C,
+                .end    = IRQ_PWRI2C,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+struct platform_device pxa3xx_device_i2c_power = {
+        .name           = "pxa2xx-i2c",
+        .id             = 1,
+        .resource       = i2c_power_resources,
+        .num_resources  = ARRAY_SIZE(i2c_power_resources),
+};
+
+void __init pxa3xx_set_i2c_power_info(struct i2c_pxa_platform_data *info)
+{
+        pxa3xx_device_i2c_power.dev.platform_data = info;
+}
+
 static struct platform_device *devices[] __initdata = {
 /*      &pxa_device_udc,        The UDC driver is PXA25x only */
         &pxa_device_ffuart,
@@ -522,6 +566,7 @@ static struct platform_device *devices[] __initdata = {
         &pxa3xx_device_ssp4,
         &pxa27x_device_pwm0,
         &pxa27x_device_pwm1,
+        &pxa3xx_device_i2c_power,
 };
 
 static struct sys_device pxa3xx_sysdev[] = {