[ARM] 4576/1: CM-X270 machine support

This patch provides core support for CM-X270 platform.

Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

3 files changed, 129 insertions, 0 deletions

diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index 3cb23210b912..257b44094e4c 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -108,6 +108,12 @@ config LEDS_GPIO
           outputs. To be useful the particular board must have LEDs
           and they must be connected to the GPIO lines.
 
+config LEDS_CM_X270
+        tristate "LED Support for the CM-X270 LEDs"
+        depends on LEDS_CLASS && MACH_ARMCORE
+        help
+          This option enables support for the CM-X270 LEDs.
+
 comment "LED Triggers"
 
 config LEDS_TRIGGERS
diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
index d2ca1abbc3d2..a60de1b46c2c 100644
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -18,6 +18,7 @@ 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_GPIO)                 += leds-gpio.o
+obj-$(CONFIG_LEDS_CM_X270)              += leds-cm-x270.o
 
 # LED Triggers
 obj-$(CONFIG_LEDS_TRIGGER_TIMER)        += ledtrig-timer.o
diff --git a/drivers/leds/leds-cm-x270.c b/drivers/leds/leds-cm-x270.c
new file mode 100644
index 000000000000..9aebef02a974
--- /dev/null
+++ b/drivers/leds/leds-cm-x270.c
@@ -0,0 +1,122 @@
+/*
+ * drivers/leds/leds-cm-x270.c
+ *
+ * Copyright 2007 CompuLab Ltd.
+ * Author: Mike Rapoport <mike@compulab.co.il>
+ *
+ * Based on leds-corgi.c
+ * Author: Richard Purdie <rpurdie@openedhand.com>
+ *
+ * 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/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/leds.h>
+
+#include <asm/arch/hardware.h>
+#include <asm/arch/pxa-regs.h>
+
+#define GPIO_RED_LED                    (93)
+#define GPIO_GREEN_LED                  (94)
+
+static void cmx270_red_set(struct led_classdev *led_cdev,
+                           enum led_brightness value)
+{
+        if (value)
+                GPCR(GPIO_RED_LED) = GPIO_bit(GPIO_RED_LED);
+        else
+                GPSR(GPIO_RED_LED) = GPIO_bit(GPIO_RED_LED);
+}
+
+static void cmx270_green_set(struct led_classdev *led_cdev,
+                             enum led_brightness value)
+{
+        if (value)
+                GPCR(GPIO_GREEN_LED) = GPIO_bit(GPIO_GREEN_LED);
+        else
+                GPSR(GPIO_GREEN_LED) = GPIO_bit(GPIO_GREEN_LED);
+}
+
+static struct led_classdev cmx270_red_led = {
+        .name                   = "cm-x270:red",
+        .default_trigger        = "nand-disk",
+        .brightness_set         = cmx270_red_set,
+};
+
+static struct led_classdev cmx270_green_led = {
+        .name                   = "cm-x270:green",
+        .default_trigger        = "heartbeat",
+        .brightness_set         = cmx270_green_set,
+};
+
+#ifdef CONFIG_PM
+static int cmx270led_suspend(struct platform_device *dev, pm_message_t state)
+{
+        led_classdev_suspend(&cmx270_red_led);
+        led_classdev_suspend(&cmx270_green_led);
+        return 0;
+}
+
+static int cmx270led_resume(struct platform_device *dev)
+{
+        led_classdev_resume(&cmx270_red_led);
+        led_classdev_resume(&cmx270_green_led);
+        return 0;
+}
+#endif
+
+static int cmx270led_probe(struct platform_device *pdev)
+{
+        int ret;
+
+        ret = led_classdev_register(&pdev->dev, &cmx270_red_led);
+        if (ret < 0)
+                return ret;
+
+        ret = led_classdev_register(&pdev->dev, &cmx270_green_led);
+        if (ret < 0)
+                led_classdev_unregister(&cmx270_red_led);
+
+        return ret;
+}
+
+static int cmx270led_remove(struct platform_device *pdev)
+{
+        led_classdev_unregister(&cmx270_red_led);
+        led_classdev_unregister(&cmx270_green_led);
+        return 0;
+}
+
+static struct platform_driver cmx270led_driver = {
+        .probe          = cmx270led_probe,
+        .remove         = cmx270led_remove,
+#ifdef CONFIG_PM
+        .suspend        = cmx270led_suspend,
+        .resume         = cmx270led_resume,
+#endif
+        .driver         = {
+                .name           = "cm-x270-led",
+        },
+};
+
+static int __init cmx270led_init(void)
+{
+        return platform_driver_register(&cmx270led_driver);
+}
+
+static void __exit cmx270led_exit(void)
+{
+        platform_driver_unregister(&cmx270led_driver);
+}
+
+module_init(cmx270led_init);
+module_exit(cmx270led_exit);
+
+MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
+MODULE_DESCRIPTION("CM-x270 LED driver");
+MODULE_LICENSE("GPL");