gpio/ep93xx: convert to platform_driver and use basic_mmio_gpio library

This converts the gpio-ep93xx driver into a platform_driver and uses
the basic_mmio_gpio library.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

1 files changed, 20 insertions, 7 deletions

diff --git a/arch/arm/mach-ep93xx/core.c b/arch/arm/mach-ep93xx/core.c
index 82079545adc4..a6b3fb208775 100644
--- a/arch/arm/mach-ep93xx/core.c
+++ b/arch/arm/mach-ep93xx/core.c
@@ -174,14 +174,10 @@ struct sys_timer ep93xx_timer = {
 /*************************************************************************
  * EP93xx IRQ handling
  *************************************************************************/
-extern void ep93xx_gpio_init_irq(void);
-
 void __init ep93xx_init_irq(void)
 {
         vic_init(EP93XX_VIC1_BASE, 0, EP93XX_VIC1_VALID_IRQ_MASK, 0);
         vic_init(EP93XX_VIC2_BASE, 32, EP93XX_VIC2_VALID_IRQ_MASK, 0);
-
-        ep93xx_gpio_init_irq();
 }
 
 
@@ -241,6 +237,24 @@ unsigned int ep93xx_chip_revision(void)
 }
 
 /*************************************************************************
+ * EP93xx GPIO
+ *************************************************************************/
+static struct resource ep93xx_gpio_resource[] = {
+        {
+                .start          = EP93XX_GPIO_PHYS_BASE,
+                .end            = EP93XX_GPIO_PHYS_BASE + 0xcc - 1,
+                .flags          = IORESOURCE_MEM,
+        },
+};
+
+static struct platform_device ep93xx_gpio_device = {
+        .name           = "gpio-ep93xx",
+        .id             = -1,
+        .num_resources  = ARRAY_SIZE(ep93xx_gpio_resource),
+        .resource       = ep93xx_gpio_resource,
+};
+
+/*************************************************************************
  * EP93xx peripheral handling
  *************************************************************************/
 #define EP93XX_UART_MCR_OFFSET          (0x0100)
@@ -866,14 +880,13 @@ void __init ep93xx_register_ac97(void)
         platform_device_register(&ep93xx_pcm_device);
 }
 
-extern void ep93xx_gpio_init(void);
-
 void __init ep93xx_init_devices(void)
 {
         /* Disallow access to MaverickCrunch initially */
         ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_CPENA);
 
-        ep93xx_gpio_init();
+        /* Get the GPIO working early, other devices need it */
+        platform_device_register(&ep93xx_gpio_device);
 
         amba_device_register(&uart1_device, &iomem_resource);
         amba_device_register(&uart2_device, &iomem_resource);