leds: Add driver for Sunfire UltraSPARC server LEDs.
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
parent
10d29ff907
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5843492ccc
3 changed files with 282 additions and 0 deletions
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@ -96,6 +96,14 @@ config LEDS_COBALT_RAQ
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help
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This option enables support for the Cobalt Raq series LEDs.
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config LEDS_SUNFIRE
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tristate "LED support for SunFire servers."
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depends on LEDS_CLASS && SPARC64
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select LEDS_TRIGGERS
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help
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This option enables support for the Left, Middle, and Right
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LEDs on the I/O and CPU boards of SunFire UltraSPARC servers.
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config LEDS_HP6XX
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tristate "LED Support for the HP Jornada 6xx"
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depends on LEDS_CLASS && SH_HP6XX
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@ -16,6 +16,7 @@ obj-$(CONFIG_LEDS_WRAP) += leds-wrap.o
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obj-$(CONFIG_LEDS_H1940) += leds-h1940.o
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obj-$(CONFIG_LEDS_COBALT_QUBE) += leds-cobalt-qube.o
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obj-$(CONFIG_LEDS_COBALT_RAQ) += leds-cobalt-raq.o
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obj-$(CONFIG_LEDS_SUNFIRE) += leds-sunfire.o
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obj-$(CONFIG_LEDS_PCA9532) += leds-pca9532.o
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obj-$(CONFIG_LEDS_GPIO) += leds-gpio.o
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obj-$(CONFIG_LEDS_CM_X270) += leds-cm-x270.o
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273
drivers/leds/leds-sunfire.c
Normal file
273
drivers/leds/leds-sunfire.c
Normal file
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@ -0,0 +1,273 @@
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/* leds-sunfire.c: SUNW,Ultra-Enterprise LED driver.
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*
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* Copyright (C) 2008 David S. Miller <davem@davemloft.net>
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/leds.h>
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#include <linux/io.h>
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#include <linux/platform_device.h>
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#include <asm/fhc.h>
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#include <asm/upa.h>
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#define DRIVER_NAME "leds-sunfire"
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#define PFX DRIVER_NAME ": "
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MODULE_AUTHOR("David S. Miller (davem@davemloft.net)");
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MODULE_DESCRIPTION("Sun Fire LED driver");
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MODULE_LICENSE("GPL");
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struct sunfire_led {
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struct led_classdev led_cdev;
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void __iomem *reg;
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};
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#define to_sunfire_led(d) container_of(d, struct sunfire_led, led_cdev)
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static void __clockboard_set(struct led_classdev *led_cdev,
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enum led_brightness led_val, u8 bit)
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{
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struct sunfire_led *p = to_sunfire_led(led_cdev);
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u8 reg = upa_readb(p->reg);
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switch (bit) {
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case CLOCK_CTRL_LLED:
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if (led_val)
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reg &= ~bit;
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else
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reg |= bit;
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break;
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default:
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if (led_val)
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reg |= bit;
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else
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reg &= ~bit;
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break;
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}
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upa_writeb(reg, p->reg);
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}
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static void clockboard_left_set(struct led_classdev *led_cdev,
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enum led_brightness led_val)
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{
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__clockboard_set(led_cdev, led_val, CLOCK_CTRL_LLED);
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}
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static void clockboard_middle_set(struct led_classdev *led_cdev,
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enum led_brightness led_val)
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{
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__clockboard_set(led_cdev, led_val, CLOCK_CTRL_MLED);
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}
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static void clockboard_right_set(struct led_classdev *led_cdev,
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enum led_brightness led_val)
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{
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__clockboard_set(led_cdev, led_val, CLOCK_CTRL_RLED);
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}
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static void __fhc_set(struct led_classdev *led_cdev,
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enum led_brightness led_val, u32 bit)
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{
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struct sunfire_led *p = to_sunfire_led(led_cdev);
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u32 reg = upa_readl(p->reg);
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switch (bit) {
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case FHC_CONTROL_LLED:
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if (led_val)
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reg &= ~bit;
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else
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reg |= bit;
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break;
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default:
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if (led_val)
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reg |= bit;
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else
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reg &= ~bit;
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break;
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}
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upa_writel(reg, p->reg);
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}
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static void fhc_left_set(struct led_classdev *led_cdev,
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enum led_brightness led_val)
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{
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__fhc_set(led_cdev, led_val, FHC_CONTROL_LLED);
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}
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static void fhc_middle_set(struct led_classdev *led_cdev,
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enum led_brightness led_val)
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{
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__fhc_set(led_cdev, led_val, FHC_CONTROL_MLED);
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}
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static void fhc_right_set(struct led_classdev *led_cdev,
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enum led_brightness led_val)
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{
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__fhc_set(led_cdev, led_val, FHC_CONTROL_RLED);
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}
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typedef void (*set_handler)(struct led_classdev *, enum led_brightness);
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struct led_type {
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const char *name;
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set_handler handler;
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const char *default_trigger;
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};
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#define NUM_LEDS_PER_BOARD 3
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struct sunfire_drvdata {
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struct sunfire_led leds[NUM_LEDS_PER_BOARD];
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};
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static int __devinit sunfire_led_generic_probe(struct platform_device *pdev,
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struct led_type *types)
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{
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struct sunfire_drvdata *p;
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int i, err = -EINVAL;
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if (pdev->num_resources != 1) {
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printk(KERN_ERR PFX "Wrong number of resources %d, should be 1\n",
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pdev->num_resources);
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goto out;
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}
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p = kzalloc(sizeof(*p), GFP_KERNEL);
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if (!p) {
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printk(KERN_ERR PFX "Could not allocate struct sunfire_drvdata\n");
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goto out;
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}
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for (i = 0; i < NUM_LEDS_PER_BOARD; i++) {
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struct led_classdev *lp = &p->leds[i].led_cdev;
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p->leds[i].reg = (void __iomem *) pdev->resource[0].start;
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lp->name = types[i].name;
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lp->brightness = LED_FULL;
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lp->brightness_set = types[i].handler;
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lp->default_trigger = types[i].default_trigger;
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err = led_classdev_register(&pdev->dev, lp);
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if (err) {
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printk(KERN_ERR PFX "Could not register %s LED\n",
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lp->name);
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goto out_unregister_led_cdevs;
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}
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}
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dev_set_drvdata(&pdev->dev, p);
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err = 0;
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out:
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return err;
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out_unregister_led_cdevs:
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for (i--; i >= 0; i--)
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led_classdev_unregister(&p->leds[i].led_cdev);
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goto out;
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}
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static int __devexit sunfire_led_generic_remove(struct platform_device *pdev)
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{
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struct sunfire_drvdata *p = dev_get_drvdata(&pdev->dev);
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int i;
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for (i = 0; i < NUM_LEDS_PER_BOARD; i++)
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led_classdev_unregister(&p->leds[i].led_cdev);
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kfree(p);
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return 0;
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}
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static struct led_type clockboard_led_types[NUM_LEDS_PER_BOARD] = {
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{
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.name = "clockboard-left",
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.handler = clockboard_left_set,
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},
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{
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.name = "clockboard-middle",
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.handler = clockboard_middle_set,
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},
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{
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.name = "clockboard-right",
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.handler = clockboard_right_set,
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.default_trigger= "heartbeat",
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},
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};
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static int __devinit sunfire_clockboard_led_probe(struct platform_device *pdev)
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{
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return sunfire_led_generic_probe(pdev, clockboard_led_types);
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}
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static struct led_type fhc_led_types[NUM_LEDS_PER_BOARD] = {
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{
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.name = "fhc-left",
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.handler = fhc_left_set,
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},
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{
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.name = "fhc-middle",
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.handler = fhc_middle_set,
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},
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{
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.name = "fhc-right",
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.handler = fhc_right_set,
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.default_trigger= "heartbeat",
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},
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};
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static int __devinit sunfire_fhc_led_probe(struct platform_device *pdev)
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{
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return sunfire_led_generic_probe(pdev, fhc_led_types);
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}
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MODULE_ALIAS("platform:sunfire-clockboard-leds");
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MODULE_ALIAS("platform:sunfire-fhc-leds");
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static struct platform_driver sunfire_clockboard_led_driver = {
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.probe = sunfire_clockboard_led_probe,
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.remove = __devexit_p(sunfire_led_generic_remove),
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.driver = {
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.name = "sunfire-clockboard-leds",
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.owner = THIS_MODULE,
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},
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};
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static struct platform_driver sunfire_fhc_led_driver = {
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.probe = sunfire_fhc_led_probe,
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.remove = __devexit_p(sunfire_led_generic_remove),
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.driver = {
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.name = "sunfire-fhc-leds",
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.owner = THIS_MODULE,
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},
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};
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static int __init sunfire_leds_init(void)
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{
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int err = platform_driver_register(&sunfire_clockboard_led_driver);
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if (err) {
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printk(KERN_ERR PFX "Could not register clock board LED driver\n");
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return err;
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}
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err = platform_driver_register(&sunfire_fhc_led_driver);
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if (err) {
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printk(KERN_ERR PFX "Could not register FHC LED driver\n");
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platform_driver_unregister(&sunfire_clockboard_led_driver);
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}
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return err;
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}
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static void __exit sunfire_leds_exit(void)
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{
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platform_driver_unregister(&sunfire_clockboard_led_driver);
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platform_driver_unregister(&sunfire_fhc_led_driver);
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}
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module_init(sunfire_leds_init);
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module_exit(sunfire_leds_exit);
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