leds: Add driver for Sunfire UltraSPARC server LEDs. (5843492c) · Commits · e / devices / android_kernel_fairphone_FP5

drivers/leds/Kconfig

+8 −0

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		@@ -96,6 +96,14 @@ config LEDS_COBALT_RAQ
		help
		This option enables support for the Cobalt Raq series LEDs.

		config LEDS_SUNFIRE
		tristate "LED support for SunFire servers."
		depends on LEDS_CLASS && SPARC64
		select LEDS_TRIGGERS
		help
		This option enables support for the Left, Middle, and Right
		LEDs on the I/O and CPU boards of SunFire UltraSPARC servers.

		config LEDS_HP6XX
		tristate "LED Support for the HP Jornada 6xx"
		depends on LEDS_CLASS && SH_HP6XX

drivers/leds/Makefile

+1 −0

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		@@ -16,6 +16,7 @@ obj-$(CONFIG_LEDS_WRAP) += leds-wrap.o
		obj-$(CONFIG_LEDS_H1940) += leds-h1940.o
		obj-$(CONFIG_LEDS_COBALT_QUBE) += leds-cobalt-qube.o
		obj-$(CONFIG_LEDS_COBALT_RAQ) += leds-cobalt-raq.o
		obj-$(CONFIG_LEDS_SUNFIRE) += leds-sunfire.o
		obj-$(CONFIG_LEDS_PCA9532) += leds-pca9532.o
		obj-$(CONFIG_LEDS_GPIO) += leds-gpio.o
		obj-$(CONFIG_LEDS_CM_X270) += leds-cm-x270.o

drivers/leds/leds-sunfire.c

0 → 100644

+273 −0

Original line number	Diff line number	Diff line
		/* leds-sunfire.c: SUNW,Ultra-Enterprise LED driver.
		*
		* Copyright (C) 2008 David S. Miller <davem@davemloft.net>
		*/

		#include <linux/kernel.h>
		#include <linux/module.h>
		#include <linux/init.h>
		#include <linux/leds.h>
		#include <linux/io.h>
		#include <linux/platform_device.h>

		#include <asm/fhc.h>
		#include <asm/upa.h>

		#define DRIVER_NAME "leds-sunfire"
		#define PFX DRIVER_NAME ": "

		MODULE_AUTHOR("David S. Miller (davem@davemloft.net)");
		MODULE_DESCRIPTION("Sun Fire LED driver");
		MODULE_LICENSE("GPL");

		struct sunfire_led {
		struct led_classdev led_cdev;
		void __iomem *reg;
		};
		#define to_sunfire_led(d) container_of(d, struct sunfire_led, led_cdev)

		static void __clockboard_set(struct led_classdev *led_cdev,
		enum led_brightness led_val, u8 bit)
		{
		struct sunfire_led *p = to_sunfire_led(led_cdev);
		u8 reg = upa_readb(p->reg);

		switch (bit) {
		case CLOCK_CTRL_LLED:
		if (led_val)
		reg &= ~bit;
		else
		reg \|= bit;
		break;

		default:
		if (led_val)
		reg \|= bit;
		else
		reg &= ~bit;
		break;
		}
		upa_writeb(reg, p->reg);
		}

		static void clockboard_left_set(struct led_classdev *led_cdev,
		enum led_brightness led_val)
		{
		__clockboard_set(led_cdev, led_val, CLOCK_CTRL_LLED);
		}

		static void clockboard_middle_set(struct led_classdev *led_cdev,
		enum led_brightness led_val)
		{
		__clockboard_set(led_cdev, led_val, CLOCK_CTRL_MLED);
		}

		static void clockboard_right_set(struct led_classdev *led_cdev,
		enum led_brightness led_val)
		{
		__clockboard_set(led_cdev, led_val, CLOCK_CTRL_RLED);
		}

		static void __fhc_set(struct led_classdev *led_cdev,
		enum led_brightness led_val, u32 bit)
		{
		struct sunfire_led *p = to_sunfire_led(led_cdev);
		u32 reg = upa_readl(p->reg);

		switch (bit) {
		case FHC_CONTROL_LLED:
		if (led_val)
		reg &= ~bit;
		else
		reg \|= bit;
		break;

		default:
		if (led_val)
		reg \|= bit;
		else
		reg &= ~bit;
		break;
		}
		upa_writel(reg, p->reg);
		}

		static void fhc_left_set(struct led_classdev *led_cdev,
		enum led_brightness led_val)
		{
		__fhc_set(led_cdev, led_val, FHC_CONTROL_LLED);
		}

		static void fhc_middle_set(struct led_classdev *led_cdev,
		enum led_brightness led_val)
		{
		__fhc_set(led_cdev, led_val, FHC_CONTROL_MLED);
		}

		static void fhc_right_set(struct led_classdev *led_cdev,
		enum led_brightness led_val)
		{
		__fhc_set(led_cdev, led_val, FHC_CONTROL_RLED);
		}

		typedef void (set_handler)(struct led_classdev , enum led_brightness);
		struct led_type {
		const char *name;
		set_handler handler;
		const char *default_trigger;
		};

		#define NUM_LEDS_PER_BOARD 3
		struct sunfire_drvdata {
		struct sunfire_led leds[NUM_LEDS_PER_BOARD];
		};

		static int __devinit sunfire_led_generic_probe(struct platform_device *pdev,
		struct led_type *types)
		{
		struct sunfire_drvdata *p;
		int i, err = -EINVAL;

		if (pdev->num_resources != 1) {
		printk(KERN_ERR PFX "Wrong number of resources %d, should be 1\n",
		pdev->num_resources);
		goto out;
		}

		p = kzalloc(sizeof(*p), GFP_KERNEL);
		if (!p) {
		printk(KERN_ERR PFX "Could not allocate struct sunfire_drvdata\n");
		goto out;
		}

		for (i = 0; i < NUM_LEDS_PER_BOARD; i++) {
		struct led_classdev *lp = &p->leds[i].led_cdev;

		p->leds[i].reg = (void __iomem *) pdev->resource[0].start;
		lp->name = types[i].name;
		lp->brightness = LED_FULL;
		lp->brightness_set = types[i].handler;
		lp->default_trigger = types[i].default_trigger;

		err = led_classdev_register(&pdev->dev, lp);
		if (err) {
		printk(KERN_ERR PFX "Could not register %s LED\n",
		lp->name);
		goto out_unregister_led_cdevs;
		}
		}

		dev_set_drvdata(&pdev->dev, p);

		err = 0;
		out:
		return err;

		out_unregister_led_cdevs:
		for (i--; i >= 0; i--)
		led_classdev_unregister(&p->leds[i].led_cdev);
		goto out;
		}

		static int __devexit sunfire_led_generic_remove(struct platform_device *pdev)
		{
		struct sunfire_drvdata *p = dev_get_drvdata(&pdev->dev);
		int i;

		for (i = 0; i < NUM_LEDS_PER_BOARD; i++)
		led_classdev_unregister(&p->leds[i].led_cdev);

		kfree(p);

		return 0;
		}

		static struct led_type clockboard_led_types[NUM_LEDS_PER_BOARD] = {
		{
		.name = "clockboard-left",
		.handler = clockboard_left_set,
		},
		{
		.name = "clockboard-middle",
		.handler = clockboard_middle_set,
		},
		{
		.name = "clockboard-right",
		.handler = clockboard_right_set,
		.default_trigger= "heartbeat",
		},
		};

		static int __devinit sunfire_clockboard_led_probe(struct platform_device *pdev)
		{
		return sunfire_led_generic_probe(pdev, clockboard_led_types);
		}

		static struct led_type fhc_led_types[NUM_LEDS_PER_BOARD] = {
		{
		.name = "fhc-left",
		.handler = fhc_left_set,
		},
		{
		.name = "fhc-middle",
		.handler = fhc_middle_set,
		},
		{
		.name = "fhc-right",
		.handler = fhc_right_set,
		.default_trigger= "heartbeat",
		},
		};

		static int __devinit sunfire_fhc_led_probe(struct platform_device *pdev)
		{
		return sunfire_led_generic_probe(pdev, fhc_led_types);
		}

		MODULE_ALIAS("platform:sunfire-clockboard-leds");
		MODULE_ALIAS("platform:sunfire-fhc-leds");

		static struct platform_driver sunfire_clockboard_led_driver = {
		.probe = sunfire_clockboard_led_probe,
		.remove = __devexit_p(sunfire_led_generic_remove),
		.driver = {
		.name = "sunfire-clockboard-leds",
		.owner = THIS_MODULE,
		},
		};

		static struct platform_driver sunfire_fhc_led_driver = {
		.probe = sunfire_fhc_led_probe,
		.remove = __devexit_p(sunfire_led_generic_remove),
		.driver = {
		.name = "sunfire-fhc-leds",
		.owner = THIS_MODULE,
		},
		};

		static int __init sunfire_leds_init(void)
		{
		int err = platform_driver_register(&sunfire_clockboard_led_driver);

		if (err) {
		printk(KERN_ERR PFX "Could not register clock board LED driver\n");
		return err;
		}

		err = platform_driver_register(&sunfire_fhc_led_driver);
		if (err) {
		printk(KERN_ERR PFX "Could not register FHC LED driver\n");
		platform_driver_unregister(&sunfire_clockboard_led_driver);
		}

		return err;
		}

		static void __exit sunfire_leds_exit(void)
		{
		platform_driver_unregister(&sunfire_clockboard_led_driver);
		platform_driver_unregister(&sunfire_fhc_led_driver);
		}

		module_init(sunfire_leds_init);
		module_exit(sunfire_leds_exit);