viafb: suspend/resume for GPIOs (67eb6f96) · Commits · 戴 / test

drivers/video/via/via-gpio.c

+29 −0

Original line number	Diff line number	Diff line
		@@ -172,6 +172,28 @@ static void viafb_gpio_disable(struct viafb_gpio *gpio)
		via_write_reg_mask(VIASR, gpio->vg_port_index, 0, 0x02);
		}

		#ifdef CONFIG_PM

		static int viafb_gpio_suspend(void *private)
		{
		return 0;
		}

		static int viafb_gpio_resume(void *private)
		{
		int i;

		for (i = 0; i < gpio_config.gpio_chip.ngpio; i += 2)
		viafb_gpio_enable(gpio_config.active_gpios[i]);
		return 0;
		}

		static struct viafb_pm_hooks viafb_gpio_pm_hooks = {
		.suspend = viafb_gpio_suspend,
		.resume = viafb_gpio_resume
		};
		#endif /* CONFIG_PM */

		/*
		* Look up a specific gpio and return the number it was assigned.
		*/
		@@ -236,6 +258,9 @@ static __devinit int viafb_gpio_probe(struct platform_device *platdev)
		printk(KERN_ERR "viafb: failed to add gpios (%d)\n", ret);
		gpio_config.gpio_chip.ngpio = 0;
		}
		#ifdef CONFIG_PM
		viafb_pm_register(&viafb_gpio_pm_hooks);
		#endif
		return ret;
		}

		@@ -245,6 +270,10 @@ static int viafb_gpio_remove(struct platform_device *platdev)
		unsigned long flags;
		int ret = 0, i;

		#ifdef CONFIG_PM
		viafb_pm_unregister(&viafb_gpio_pm_hooks);
		#endif

		/*
		* Get unregistered.
		*/