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[PATCH v8 7/8] Loongson: YeeLoong: add suspend support



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 |   42 ++++++++++++++++++++++++++++--
 1 files changed, 39 insertions(+), 3 deletions(-)

diff --git a/drivers/platform/mips/yeeloong_laptop.c b/drivers/platform/mips/yeeloong_laptop.c
index 180dbb1..5e83788 100644
--- a/drivers/platform/mips/yeeloong_laptop.c
+++ b/drivers/platform/mips/yeeloong_laptop.c
@@ -515,6 +515,39 @@ static void yeeloong_vo_exit(void)
 	}
 }
 
+#ifdef CONFIG_PM
+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 device *dev)
+
+{
+	yeeloong_lcd_vo_set(BIT_DISPLAY_LCD_OFF);
+	yeeloong_crt_vo_set(BIT_CRT_DETECT_UNPLUG);
+	usb_ports_set(BIT_USB_FLAG_OFF);
+
+	return 0;
+}
+
+static int yeeloong_resume(struct device *dev)
+{
+	yeeloong_lcd_vo_set(BIT_DISPLAY_LCD_ON);
+	yeeloong_crt_vo_set(BIT_CRT_DETECT_PLUG);
+	usb_ports_set(BIT_USB_FLAG_ON);
+
+	return 0;
+}
+
+static const SIMPLE_DEV_PM_OPS(yeeloong_pm_ops, yeeloong_suspend,
+	yeeloong_resume);
+#endif
+
 static struct platform_device_id platform_device_ids[] = {
 	{
 		.name = "yeeloong_laptop",
@@ -526,9 +559,12 @@ MODULE_DEVICE_TABLE(platform, platform_device_ids);
 
 static struct platform_driver platform_driver = {
 	.driver = {
-		   .name = "yeeloong_laptop",
-		   .owner = THIS_MODULE,
-		   },
+		.name = "yeeloong_laptop",
+		.owner = THIS_MODULE,
+#ifdef CONFIG_PM
+		.pm = &yeeloong_pm_ops,
+#endif
+	},
 	.id_table = platform_device_ids,
 };
 
-- 
1.6.2.1

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