From: Wu Zhangjin <wuzhangjin@xxxxxxxxx>
This patch add support to suspend the yeeloong platform specific
devices(LCD, CRT, USB...).
Acked-by: Rafael J. Wysocki <rjw@xxxxxxx>
Acked-by: Pavel Machek <pavel@xxxxxx>
Signed-off-by: Wu Zhangjin <wuzhangjin@xxxxxxxxx>
---
drivers/platform/mips/yeeloong_laptop.c | 41 +++++++++++++++++++++++++++++++
1 files changed, 41 insertions(+), 0 deletions(-)
diff --git a/drivers/platform/mips/yeeloong_laptop.c b/drivers/platform/mips/yeeloong_laptop.c
index 8378926..d31824b 100644
--- a/drivers/platform/mips/yeeloong_laptop.c
+++ b/drivers/platform/mips/yeeloong_laptop.c
@@ -536,6 +536,45 @@ static void yeeloong_vo_exit(void)
}
}
+#ifdef CONFIG_LOONGSON_SUSPEND
+static void usb_ports_set(int status)
+{
+ status = !!status;
+
+ ec_write(REG_USB0_FLAG, status);
+ ec_write(REG_USB1_FLAG, status);
+ ec_write(REG_USB2_FLAG, status);
+}
+
+static int yeeloong_suspend(struct platform_device *dev, pm_message_t state)
+
+{
+ /* Turn off LCD */
+ yeeloong_lcd_vo_set(BIT_DISPLAY_LCD_OFF);
+ /* Turn off CRT */
+ yeeloong_crt_vo_set(BIT_CRT_DETECT_UNPLUG);
+ /* Poweroff three usb ports */
+ usb_ports_set(BIT_USB_FLAG_OFF);
+
+ return 0;
+}
+
+static int yeeloong_resume(struct platform_device *pdev)
+{
+ /* Resume the status of lcd & crt */
+ yeeloong_lcd_vo_set(BIT_DISPLAY_LCD_ON);
+ yeeloong_crt_vo_set(BIT_CRT_DETECT_PLUG);
+
+ /* Poweron three usb ports */
+ usb_ports_set(BIT_USB_FLAG_ON);
+
+ return 0;
+}
+#else /* !CONFIG_LOONGSON_SUSPEND */
+#define yeeloong_suspend NULL
+#define yeeloong_resume NULL
+#endif
+
static struct platform_device_id platform_device_ids[] = {
{
.name = "yeeloong_laptop",
@@ -551,6 +590,8 @@ static struct platform_driver platform_driver = {
.owner = THIS_MODULE,
},
.id_table = platform_device_ids,
+ .suspend = yeeloong_suspend,
+ .resume = yeeloong_resume,
};
static int __init yeeloong_init(void)
--
1.6.2.1
