ARM: 7936/1: sa1100: collie: add support for IrDA transceiver

Collie has onboard IrDA transceiver controlled via active-low gpio. Add
corresponding platform data.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

2 files changed, 34 insertions, 1 deletions

diff --git a/arch/arm/mach-sa1100/collie.c b/arch/arm/mach-sa1100/collie.c
index 831a15824ec8..f9874ba60cc8 100644
--- a/arch/arm/mach-sa1100/collie.c
+++ b/arch/arm/mach-sa1100/collie.c
@@ -43,6 +43,7 @@
 #include <asm/mach/arch.h>
 #include <asm/mach/flash.h>
 #include <asm/mach/map.h>
+#include <asm/mach/irda.h>
 
 #include <asm/hardware/scoop.h>
 #include <asm/mach/sharpsl_param.h>
@@ -96,6 +97,37 @@ static struct mcp_plat_data collie_mcp_data = {
         .codec_pdata    = &collie_ucb1x00_data,
 };
 
+static int collie_ir_startup(struct device *dev)
+{
+        int rc = gpio_request(COLLIE_GPIO_IR_ON, "IrDA");
+        if (rc)
+                return rc;
+        rc = gpio_direction_output(COLLIE_GPIO_IR_ON, 1);
+
+        if (!rc)
+                return 0;
+
+        gpio_free(COLLIE_GPIO_IR_ON);
+        return rc;
+}
+
+static void collie_ir_shutdown(struct device *dev)
+{
+        gpio_free(COLLIE_GPIO_IR_ON);
+}
+
+static int collie_ir_set_power(struct device *dev, unsigned int state)
+{
+        gpio_set_value(COLLIE_GPIO_IR_ON, !state);
+        return 0;
+}
+
+static struct irda_platform_data collie_ir_data = {
+        .startup = collie_ir_startup,
+        .shutdown = collie_ir_shutdown,
+        .set_power = collie_ir_set_power,
+};
+
 /*
  * Collie AC IN
  */
@@ -400,6 +432,7 @@ static void __init collie_init(void)
         sa11x0_register_mtd(&collie_flash_data, collie_flash_resources,
                             ARRAY_SIZE(collie_flash_resources));
         sa11x0_register_mcp(&collie_mcp_data);
+        sa11x0_register_irda(&collie_ir_data);
 
         sharpsl_save_param();
 }
diff --git a/arch/arm/mach-sa1100/include/mach/collie.h b/arch/arm/mach-sa1100/include/mach/collie.h
index f33679d2d3ee..0ef22f9cda95 100644
--- a/arch/arm/mach-sa1100/include/mach/collie.h
+++ b/arch/arm/mach-sa1100/include/mach/collie.h
@@ -78,7 +78,7 @@ extern void locomolcd_power(int on);
 #define COLLIE_TC35143_GPIO_VERSION0    UCB_IO_0
 #define COLLIE_TC35143_GPIO_TBL_CHK     UCB_IO_1
 #define COLLIE_TC35143_GPIO_VPEN_ON     UCB_IO_2
-#define COLLIE_TC35143_GPIO_IR_ON       UCB_IO_3
+#define COLLIE_GPIO_IR_ON               (COLLIE_TC35143_GPIO_BASE + 3)
 #define COLLIE_TC35143_GPIO_AMP_ON      UCB_IO_4
 #define COLLIE_TC35143_GPIO_VERSION1    UCB_IO_5
 #define COLLIE_TC35143_GPIO_FS8KLPF     UCB_IO_5