On Tuesday 01 December 2009, Wu Zhangin wrote:
> From: Wu Zhangjin <wuzhangjin@xxxxxxxxx>
>
> This patch adds Suspend Driver, which will suspend the YeeLoong Platform
> specific devices.
>
> Acked-by: Pavel Machek <pavel@xxxxxx>
> Signed-off-by: Wu Zhangjin <wuzhangjin@xxxxxxxxx>
I'm still not sure how useful it is to build it as a module, but otherwise
Acked-by: Rafael J. Wysocki <rjw@xxxxxxx>
> ---
> .../loongson/lemote-2f/yeeloong_laptop/Kconfig | 8 +
> .../loongson/lemote-2f/yeeloong_laptop/Makefile | 1 +
> .../lemote-2f/yeeloong_laptop/yl_suspend.c | 135 ++++++++++++++++++++
> 3 files changed, 144 insertions(+), 0 deletions(-)
> create mode 100644 arch/mips/loongson/lemote-2f/yeeloong_laptop/yl_suspend.c
>
> diff --git a/arch/mips/loongson/lemote-2f/yeeloong_laptop/Kconfig b/arch/mips/loongson/lemote-2f/yeeloong_laptop/Kconfig
> index 7cf6071..f1211b4 100644
> --- a/arch/mips/loongson/lemote-2f/yeeloong_laptop/Kconfig
> +++ b/arch/mips/loongson/lemote-2f/yeeloong_laptop/Kconfig
> @@ -45,4 +45,12 @@ 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_VO && LOONGSON_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 aa01140..29f8050 100644
> --- a/arch/mips/loongson/lemote-2f/yeeloong_laptop/Makefile
> +++ b/arch/mips/loongson/lemote-2f/yeeloong_laptop/Makefile
> @@ -6,3 +6,4 @@ obj-$(CONFIG_YEELOONG_BACKLIGHT) += yl_backlight.o
> obj-$(CONFIG_YEELOONG_BATTERY) += yl_battery.o
> obj-$(CONFIG_YEELOONG_HWMON) += yl_hwmon.o
> obj-$(CONFIG_YEELOONG_VO) += yl_vo.o
> +obj-$(CONFIG_YEELOONG_SUSPEND) += yl_suspend.o
> diff --git a/arch/mips/loongson/lemote-2f/yeeloong_laptop/yl_suspend.c b/arch/mips/loongson/lemote-2f/yeeloong_laptop/yl_suspend.c
> new file mode 100644
> index 0000000..9f53a69
> --- /dev/null
> +++ b/arch/mips/loongson/lemote-2f/yeeloong_laptop/yl_suspend.c
> @@ -0,0 +1,135 @@
> +/*
> + * 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 */
> + 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)
> +{
> + pr_info("yeeloong specific resume\n");
> +
> + /* 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;
> +}
> +
> +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);
>
_______________________________________________
linux-pm mailing list
linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx
https://lists.linux-foundation.org/mailman/listinfo/linux-pm
