From: root <root@lw.(none)>
Date: Tue, 17 May 2011 13:54:52 +0000 (+0800)
Subject: add wm831x restart support
X-Git-Tag: firefly_0821_release~10320
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=7569e53e5c85d7846499733d806752c033d9dc3b;p=firefly-linux-kernel-4.4.55.git

add wm831x restart support
---

diff --git a/arch/arm/mach-rk29/board-rk29-a22.c b/arch/arm/mach-rk29/board-rk29-a22.c
index 545093e37b07..3f1966fe00cc 100755
--- a/arch/arm/mach-rk29/board-rk29-a22.c
+++ b/arch/arm/mach-rk29/board-rk29-a22.c
@@ -3093,15 +3093,24 @@ static void __init machine_rk29_init_irq(void)
 }
 
 #define POWER_ON_PIN RK29_PIN4_PA4
-extern void wm831x_power_off(void);
 static void rk29_pm_power_off(void)
 {
 	printk(KERN_ERR "rk29_pm_power_off start...\n");
+	gpio_direction_output(POWER_ON_PIN, GPIO_LOW);
 #if defined(CONFIG_MFD_WM831X)
 	wm831x_device_shutdown(gWm831x);
 #endif
 	while (1);
 }
+static void rk29_pm_power_restart(void)
+{
+	printk("%s\n",__FUNCTION__);
+	mdelay(2);
+#if defined(CONFIG_MFD_WM831X)
+	wm831x_device_restart(gWm831x);
+#endif
+
+}
 
 static void __init machine_rk29_board_init(void)
 {
@@ -3111,6 +3120,7 @@ static void __init machine_rk29_board_init(void)
 	gpio_set_value(POWER_ON_PIN, GPIO_HIGH);
 	gpio_direction_output(POWER_ON_PIN, GPIO_HIGH);
 	pm_power_off = rk29_pm_power_off;
+	arm_pm_restart = rk29_pm_power_restart;
 
 	platform_add_devices(devices, ARRAY_SIZE(devices));
 #ifdef CONFIG_I2C0_RK29
diff --git a/arch/arm/mach-rk29/board-rk29-phonesdk.c b/arch/arm/mach-rk29/board-rk29-phonesdk.c
old mode 100755
new mode 100644
index 4addc63d7d41..b0c21d0297c6
--- a/arch/arm/mach-rk29/board-rk29-phonesdk.c
+++ b/arch/arm/mach-rk29/board-rk29-phonesdk.c
@@ -3099,6 +3099,15 @@ static void rk29_pm_power_off(void)
 #endif
 	while (1);
 }
+static void rk29_pm_power_restart(void)
+{
+	printk("%s\n",__FUNCTION__);
+	mdelay(2);
+#if defined(CONFIG_MFD_WM831X)
+	wm831x_device_restart(gWm831x);
+#endif
+
+}
 
 static void __init machine_rk29_board_init(void)
 {
@@ -3108,6 +3117,7 @@ static void __init machine_rk29_board_init(void)
 	gpio_set_value(POWER_ON_PIN, GPIO_HIGH);
 	gpio_direction_output(POWER_ON_PIN, GPIO_HIGH);
 	pm_power_off = rk29_pm_power_off;
+	arm_pm_restart = rk29_pm_power_restart;
 
 	platform_add_devices(devices, ARRAY_SIZE(devices));
 #ifdef CONFIG_I2C0_RK29
diff --git a/drivers/mfd/wm831x-core.c b/drivers/mfd/wm831x-core.c
index 0ce83bee2c84..761f86ea4a88 100755
--- a/drivers/mfd/wm831x-core.c
+++ b/drivers/mfd/wm831x-core.c
@@ -1809,6 +1809,15 @@ int wm831x_device_shutdown(struct wm831x *wm831x)
 
 EXPORT_SYMBOL_GPL(wm831x_device_shutdown);
 
+
+int wm831x_device_restart(struct wm831x *wm831x)
+{
+	wm831x_reg_write(wm831x,WM831X_RESET_ID, 0xffff); 
+
+	return 0;
+}
+
+
 MODULE_DESCRIPTION("Core support for the WM831X AudioPlus PMIC");
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Mark Brown");
diff --git a/include/linux/mfd/wm831x/core.h b/include/linux/mfd/wm831x/core.h
index 7a9e8805356d..fb21267f0267 100755
--- a/include/linux/mfd/wm831x/core.h
+++ b/include/linux/mfd/wm831x/core.h
@@ -344,6 +344,7 @@ void wm831x_device_exit(struct wm831x *wm831x);
 int wm831x_device_suspend(struct wm831x *wm831x);
 int wm831x_device_resume(struct wm831x *wm831x);
 int wm831x_device_shutdown(struct wm831x *wm831x);
+int wm831x_device_restart(struct wm831x *wm831x);
 int wm831x_irq_init(struct wm831x *wm831x, int irq);
 void wm831x_irq_exit(struct wm831x *wm831x);