u5500: ponkey: shutdown time configuration

support for compile time configuration of poweron key shutdown
time. Default is 10sec and can be set to 5sec or disabled

ST-Ericsson Linux next: NA
ST-Ericsson ID: WP257125
ST-Ericsson FOSS-OUT ID: NA

Change-Id: I7fbf57d21ff218370dba24182716222c354f4dc5
Signed-off-by: Rajagopala V <rajagopala.v@stericsson.com
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/28430
Reviewed-by: Rabin VINCENT <rabin.vincent@stericsson.com>
Tested-by: Rajagopala VENKATARAVANAPPA X <rajagopala.v@stericsson.com>
Reviewed-by: Srinidhi KASAGAR <srinidhi.kasagar@stericsson.com>
Signed-off-by: Robert Marklund <robert.marklund@stericsson.com>

3 files changed, 65 insertions, 0 deletions

diff --git a/arch/arm/mach-ux500/board-u5500.c b/arch/arm/mach-ux500/board-u5500.c
index 6d6b5f29242..5f637642721 100644
--- a/arch/arm/mach-ux500/board-u5500.c
+++ b/arch/arm/mach-ux500/board-u5500.c
@@ -123,6 +123,14 @@ static struct ab5500_hvleds_platform_data ab5500_hvleds_data = {
 	},
 };
 
+static struct ab5500_ponkey_platform_data ab5500_ponkey_data = {
+	/*
+	 * Shutdown time in secs. Can be set
+	 * to 10sec, 5sec and 0sec(disabled)
+	 */
+	.shutdown_secs = 10,
+};
+
 /*
  * I2C
  */
@@ -359,6 +367,8 @@ static struct ab5500_platform_data ab5500_plf_data = {
 	.dev_data[AB5500_DEVID_BTEMP] = &abx500_bm_pt_data,
 	.dev_data_sz[AB5500_DEVID_BTEMP] = sizeof(abx500_bm_pt_data),
 #endif
+	.dev_data[AB5500_DEVID_ONSWA] = &ab5500_ponkey_data,
+	.dev_data_sz[AB5500_DEVID_ONSWA] = sizeof(ab5500_ponkey_data),
 };
 
 static struct platform_device u5500_ab5500_device = {
diff --git a/drivers/input/misc/ab8500-ponkey.c b/drivers/input/misc/ab8500-ponkey.c
index 39964956de2..251408b95c9 100644
--- a/drivers/input/misc/ab8500-ponkey.c
+++ b/drivers/input/misc/ab8500-ponkey.c
@@ -12,15 +12,28 @@
 #include <linux/input.h>
 #include <linux/interrupt.h>
 #include <linux/slab.h>
+#include <linux/mfd/abx500.h>
+
+/* Ponkey time control bits */
+#define AB5500_MCB		0x2F
+#define AB5500_PONKEY_10SEC	0x0
+#define AB5500_PONKEY_5SEC	0x1
+#define AB5500_PONKEY_DISABLE	0x2
+#define AB5500_PONKEY_TMR_MASK	0x1
+#define AB5500_PONKEY_TR_MASK	0x2
+
+static int ab5500_ponkey_hw_init(struct platform_device *);
 
 struct ab8500_ponkey_variant {
 	const char *irq_falling;
 	const char *irq_rising;
+	int (*hw_init)(struct platform_device *);
 };
 
 static const struct ab8500_ponkey_variant ab5500_onswa = {
 	.irq_falling	= "ONSWAn_falling",
 	.irq_rising	= "ONSWAn_rising",
+	.hw_init	= ab5500_ponkey_hw_init,
 };
 
 static const struct ab8500_ponkey_variant ab8500_ponkey = {
@@ -40,6 +53,37 @@ struct ab8500_ponkey_info {
 	int			irq_dbr;
 };
 
+static int ab5500_ponkey_hw_init(struct platform_device *pdev)
+{
+	u8 val;
+	struct ab5500_ponkey_platform_data *pdata;
+
+	pdata = pdev->dev.platform_data;
+	if (pdata) {
+		switch (pdata->shutdown_secs) {
+		case 0:
+			val = AB5500_PONKEY_DISABLE;
+			break;
+		case 5:
+			val = AB5500_PONKEY_5SEC;
+			break;
+		case 10:
+			val = AB5500_PONKEY_10SEC;
+			break;
+		default:
+			val = AB5500_PONKEY_10SEC;
+		}
+	} else {
+		val = AB5500_PONKEY_10SEC;
+	}
+	return abx500_mask_and_set(
+		&pdev->dev,
+		AB5500_BANK_STARTUP,
+		AB5500_MCB,
+		AB5500_PONKEY_TMR_MASK | AB5500_PONKEY_TR_MASK,
+		val);
+}
+
 /* AB8500 gives us an interrupt when ONKEY is held */
 static irqreturn_t ab8500_ponkey_handler(int irq, void *data)
 {
@@ -64,6 +108,14 @@ static int __devinit ab8500_ponkey_probe(struct platform_device *pdev)
 	variant = (const struct ab8500_ponkey_variant *)
 		  pdev->id_entry->driver_data;
 
+	if (variant->hw_init) {
+		ret = variant->hw_init(pdev);
+		if (ret < 0) {
+			dev_err(&pdev->dev, "Failed to init hw");
+			return ret;
+		}
+	}
+
 	irq_dbf = platform_get_irq_byname(pdev, variant->irq_falling);
 	if (irq_dbf < 0) {
 		dev_err(&pdev->dev, "No IRQ for %s: %d\n",
diff --git a/include/linux/mfd/abx500.h b/include/linux/mfd/abx500.h
index 1d96d4f1bcc..79b3e9eb4f3 100644
--- a/include/linux/mfd/abx500.h
+++ b/include/linux/mfd/abx500.h
@@ -369,6 +369,9 @@ struct ab5500_platform_data {
 	struct ab5500_regulator_platform_data *regulator;
 };
 
+struct ab5500_ponkey_platform_data {
+	u8 shutdown_secs;
+};
 
 int abx500_set_register_interruptible(struct device *dev, u8 bank, u8 reg,
 	u8 value);