From: Wu Zhangjin <wuzhangjin@xxxxxxxxx>
This patch adds Suspend Driver, which will suspend the YeeLoong Platform
specific devices.
Signed-off-by: Wu Zhangjin <wuzhangjin@xxxxxxxxx>
---
.../loongson/lemote-2f/yeeloong_laptop/Kconfig | 9 ++
.../loongson/lemote-2f/yeeloong_laptop/Makefile | 1 +
.../loongson/lemote-2f/yeeloong_laptop/suspend.c | 141 ++++++++++++++++++++
3 files changed, 151 insertions(+), 0 deletions(-)
create mode 100644 arch/mips/loongson/lemote-2f/yeeloong_laptop/suspend.c
diff --git a/arch/mips/loongson/lemote-2f/yeeloong_laptop/Kconfig b/arch/mips/loongson/lemote-2f/yeeloong_laptop/Kconfig
index c4398ff..49d63c5 100644
--- a/arch/mips/loongson/lemote-2f/yeeloong_laptop/Kconfig
+++ b/arch/mips/loongson/lemote-2f/yeeloong_laptop/Kconfig
@@ -45,4 +45,13 @@ config YEELOONG_VO
This option adds Video Output Driver, which provides standard
interface to turn on/off the video output of LCD, CRT.
+config YEELOONG_SUSPEND
+ tristate "Suspend Driver"
+ depends on YEELOONG_HWMON && YEELOONG_VO
+ select SUSPEND
+ default y
+ help
+ This option adds Suspend Driver, which will suspend the YeeLoong
+ Platform specific devices.
+
endif
diff --git a/arch/mips/loongson/lemote-2f/yeeloong_laptop/Makefile b/arch/mips/loongson/lemote-2f/yeeloong_laptop/Makefile
index 104670f..cfe736f 100644
--- a/arch/mips/loongson/lemote-2f/yeeloong_laptop/Makefile
+++ b/arch/mips/loongson/lemote-2f/yeeloong_laptop/Makefile
@@ -6,3 +6,4 @@ obj-$(CONFIG_YEELOONG_BACKLIGHT) += backlight.o
obj-$(CONFIG_YEELOONG_BATTERY) += battery.o
obj-$(CONFIG_YEELOONG_HWMON) += hwmon.o
obj-$(CONFIG_YEELOONG_VO) += video_output.o
+obj-$(CONFIG_YEELOONG_SUSPEND) += suspend.o
diff --git a/arch/mips/loongson/lemote-2f/yeeloong_laptop/suspend.c b/arch/mips/loongson/lemote-2f/yeeloong_laptop/suspend.c
new file mode 100644
index 0000000..8202971
--- /dev/null
+++ b/arch/mips/loongson/lemote-2f/yeeloong_laptop/suspend.c
@@ -0,0 +1,141 @@
+/*
+ * YeeLoong Platform Specific Suspend Driver
+ *
+ * Copyright (C) 2009 Lemote Inc.
+ * Author: Wu Zhangjin <wuzj@xxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/err.h>
+#include <linux/platform_device.h>
+
+#include <asm/bootinfo.h>
+
+#include "ec_kb3310b.h"
+
+MODULE_AUTHOR("Wu Zhangjin <wuzj@xxxxxxxxxx>");
+MODULE_DESCRIPTION("YeeLoong laptop suspend driver");
+MODULE_LICENSE("GPL");
+
+static struct platform_device *yeeloong_pdev;
+
+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 *pdev,
+ pm_message_t state)
+{
+ pr_info("yeeloong specific suspend\n");
+
+ /* Turn off LCD */
+ lcd_vo_set(BIT_DISPLAY_LCD_OFF);
+ /* Turn off CRT */
+ crt_vo_set(BIT_CRT_DETECT_UNPLUG);
+ /* Poweroff three usb ports */
+ usb_ports_set(BIT_USB_FLAG_OFF);
+ /* Minimize the speed of FAN */
+ set_fan_pwm_enable(BIT_FAN_MANUAL);
+ set_fan_pwm(1);
+
+ return 0;
+}
+
+static int yeeloong_resume(struct platform_device *pdev)
+{
+ pr_info("yeeloong specific resume\n");
+
+ /* Resume the status of lcd & crt */
+ lcd_vo_set(BIT_DISPLAY_LCD_ON);
+ crt_vo_set(BIT_CRT_DETECT_PLUG);
+
+ /* Poweron three usb ports */
+ usb_ports_set(BIT_USB_FLAG_ON);
+
+ /* Resume fan to auto mode */
+ set_fan_pwm_enable(BIT_FAN_AUTO);
+
+ return 0;
+}
+
+static struct platform_driver platform_driver = {
+ .driver = {
+ .name = "yeeloong-laptop",
+ .owner = THIS_MODULE,
+ },
+ .suspend = yeeloong_suspend,
+ .resume = yeeloong_resume,
+};
+
+static ssize_t yeeloong_pdev_name_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return sprintf(buf, "yeeloong laptop\n");
+}
+
+static struct device_attribute dev_attr_yeeloong_pdev_name =
+__ATTR(name, S_IRUGO, yeeloong_pdev_name_show, NULL);
+
+static int __init yeeloong_suspend_init(void)
+{
+ int ret;
+
+ if (mips_machtype != MACH_LEMOTE_YL2F89) {
+ pr_err("This Driver is only for YeeLoong laptop\n");
+ return -EFAULT;
+ }
+
+ /* Register platform stuff */
+ ret = platform_driver_register(&platform_driver);
+ if (ret)
+ return ret;
+
+ yeeloong_pdev = platform_device_alloc("yeeloong-laptop", -1);
+ if (!yeeloong_pdev) {
+ ret = -ENOMEM;
+ platform_driver_unregister(&platform_driver);
+ return ret;
+ }
+
+ ret = platform_device_add(yeeloong_pdev);
+ if (ret) {
+ platform_device_put(yeeloong_pdev);
+ return ret;
+ }
+
+ if (IS_ERR(yeeloong_pdev)) {
+ ret = PTR_ERR(yeeloong_pdev);
+ yeeloong_pdev = NULL;
+ pr_err("Fail to register platform device\n");
+ return ret;
+ }
+
+ ret = device_create_file(&yeeloong_pdev->dev,
+ &dev_attr_yeeloong_pdev_name);
+ if (ret) {
+ pr_err("Fail to create sysfs device attributes\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+static void __exit yeeloong_suspend_exit(void)
+{
+ if (yeeloong_pdev) {
+ platform_device_unregister(yeeloong_pdev);
+ yeeloong_pdev = NULL;
+ platform_driver_unregister(&platform_driver);
+ }
+}
+
+module_init(yeeloong_suspend_init);
+module_exit(yeeloong_suspend_exit);
--
1.6.2.1
