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git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-09-03 23:35:51 +03:00
add latch driver modifications for the mi424wr
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13392 3c298f89-4303-0410-b956-a3cf2f4a3e73
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@ -15,7 +15,7 @@
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depends on LEDS_CLASS && MACH_ARMCORE
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--- /dev/null
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+++ b/drivers/leds/leds-latch.c
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@@ -0,0 +1,141 @@
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@@ -0,0 +1,149 @@
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+/*
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+ * LEDs driver for Memory Latched Devices
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+ *
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@ -44,8 +44,19 @@
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+ struct work_struct work;
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+ u8 new_level;
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+ u8 bit;
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+ void (*set_led)(u8 bit, enum led_brightness value);
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+};
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+
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+static void latch_set_led(u8 bit, enum led_brightness value)
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+{
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+ if (value == LED_OFF)
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+ mem_keep |= (0x1 << bit);
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+ else
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+ mem_keep &= ~(0x1 << bit);
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+
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+ writeb(mem_keep, iobase);
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+}
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+
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+static void latch_led_set(struct led_classdev *led_cdev,
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+ enum led_brightness value)
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+{
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@ -54,12 +65,7 @@
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+
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+ spin_lock(mem_lock);
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+
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+ if (value == LED_OFF)
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+ mem_keep |= (0x1 << led_dat->bit);
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+ else
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+ mem_keep &= ~(0x1 << led_dat->bit);
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+
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+ writeb(mem_keep, iobase);
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+ led_dat->set_led(led_dat->bit, value);
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+
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+ spin_unlock(mem_lock);
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+}
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@ -79,9 +85,6 @@
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+ if (!leds_data)
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+ return -ENOMEM;
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+
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+ iobase = ioremap_nocache(pdata->mem, 0x1000);
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+ writeb(0xFF, iobase);
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+
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+ for (i = 0; i < pdata->num_leds; i++) {
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+ cur_led = &pdata->leds[i];
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+ led_dat = &leds_data[i];
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@ -91,6 +94,7 @@
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+ led_dat->cdev.brightness_set = latch_led_set;
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+ led_dat->cdev.brightness = LED_OFF;
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+ led_dat->bit = cur_led->bit;
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+ led_dat->set_led = pdata->set_led ? pdata->set_led : latch_set_led;
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+
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+ ret = led_classdev_register(&pdev->dev, &led_dat->cdev);
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+ if (ret < 0) {
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@ -98,6 +102,10 @@
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+ }
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+ }
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+
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+ if (!pdata->set_led) {
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+ iobase = ioremap_nocache(pdata->mem, 0x1000);
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+ writeb(0xFF, iobase);
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+ }
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+ platform_set_drvdata(pdev, leds_data);
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+
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+ return 0;
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@ -169,7 +177,7 @@
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obj-$(CONFIG_LEDS_HP6XX) += leds-hp6xx.o
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--- a/include/linux/leds.h
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+++ b/include/linux/leds.h
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@@ -148,5 +148,18 @@ struct gpio_led_platform_data {
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@@ -148,5 +148,19 @@ struct gpio_led_platform_data {
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unsigned long *delay_off);
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};
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@ -184,6 +192,7 @@
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+ int num_leds;
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+ u32 mem;
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+ struct latch_led *leds;
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+ void (*set_led)(u8 bit, enum led_brightness value);
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+};
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+
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