[ARM] 5099/1: Tosa: support AC-in detection.

Add support for ac-in via pda_power device.

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

1 files changed, 66 insertions, 0 deletions

diff --git a/arch/arm/mach-pxa/tosa.c b/arch/arm/mach-pxa/tosa.c
index 2fe0998ac3fb..f3b12d2897a6 100644
--- a/arch/arm/mach-pxa/tosa.c
+++ b/arch/arm/mach-pxa/tosa.c
@@ -27,6 +27,7 @@
 #include <linux/gpio_keys.h>
 #include <linux/input.h>
 #include <linux/gpio.h>
+#include <linux/pda_power.h>
 
 #include <asm/setup.h>
 #include <asm/mach-types.h>
@@ -410,6 +411,70 @@ static struct pxaficp_platform_data tosa_ficp_platform_data = {
 };
 
 /*
+ * Tosa AC IN
+ */
+static int tosa_power_init(struct device *dev)
+{
+        int ret = gpio_request(TOSA_GPIO_AC_IN, "ac in");
+        if (ret)
+                goto err_gpio_req;
+
+        ret = gpio_direction_input(TOSA_GPIO_AC_IN);
+        if (ret)
+                goto err_gpio_in;
+
+        return 0;
+
+err_gpio_in:
+        gpio_free(TOSA_GPIO_AC_IN);
+err_gpio_req:
+        return ret;
+}
+
+static void tosa_power_exit(struct device *dev)
+{
+        gpio_free(TOSA_GPIO_AC_IN);
+}
+
+static int tosa_power_ac_online(void)
+{
+        return gpio_get_value(TOSA_GPIO_AC_IN) == 0;
+}
+
+static char *tosa_ac_supplied_to[] = {
+        "main-battery",
+        "backup-battery",
+        "jacket-battery",
+};
+
+static struct pda_power_pdata tosa_power_data = {
+        .init                   = tosa_power_init,
+        .is_ac_online           = tosa_power_ac_online,
+        .exit                   = tosa_power_exit,
+        .supplied_to            = tosa_ac_supplied_to,
+        .num_supplicants        = ARRAY_SIZE(tosa_ac_supplied_to),
+};
+
+static struct resource tosa_power_resource[] = {
+        {
+                .name           = "ac",
+                .start          = gpio_to_irq(TOSA_GPIO_AC_IN),
+                .end            = gpio_to_irq(TOSA_GPIO_AC_IN),
+                .flags          = IORESOURCE_IRQ |
+                                  IORESOURCE_IRQ_HIGHEDGE |
+                                  IORESOURCE_IRQ_LOWEDGE,
+        },
+};
+
+static struct platform_device tosa_power_device = {
+        .name                   = "pda-power",
+        .id                     = -1,
+        .dev.platform_data      = &tosa_power_data,
+        .resource               = tosa_power_resource,
+        .num_resources          = ARRAY_SIZE(tosa_power_resource),
+};
+
+/*
  * Tosa Keyboard
  */
 static struct platform_device tosakbd_device = {
@@ -633,6 +698,7 @@ static struct platform_device *devices[] __initdata = {
         &tosascoop_device,
         &tosascoop_jc_device,
         &tc6393xb_device,
+        &tosa_power_device,
         &tosakbd_device,
         &tosa_gpio_keys_device,
         &tosaled_device,