MIPS: Add core files for MIPS SEAD-3 development platform.

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / mips / mti-sead3 / leds-sead3.c

diff --git a/arch/mips/mti-sead3/leds-sead3.c b/arch/mips/mti-sead3/leds-sead3.c
new file mode 100644 (file)
index 0000000..a95ac59
--- /dev/null
+++ b/arch/mips/mti-sead3/leds-sead3.c
@@ -0,0 +1,128 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2012 MIPS Technologies, Inc.  All rights reserved.
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/leds.h>
+#include <linux/err.h>
+#include <linux/io.h>
+
+#define DRVNAME "sead3-led"
+
+static struct platform_device *pdev;
+
+static void sead3_pled_set(struct led_classdev *led_cdev,
+               enum led_brightness value)
+{
+       pr_debug("sead3_pled_set\n");
+       writel(value, (void __iomem *)0xBF000210);      /* FIXME */
+}
+
+static void sead3_fled_set(struct led_classdev *led_cdev,
+               enum led_brightness value)
+{
+       pr_debug("sead3_fled_set\n");
+       writel(value, (void __iomem *)0xBF000218);      /* FIXME */
+}
+
+static struct led_classdev sead3_pled = {
+       .name           = "sead3::pled",
+       .brightness_set = sead3_pled_set,
+};
+
+static struct led_classdev sead3_fled = {
+       .name           = "sead3::fled",
+       .brightness_set = sead3_fled_set,
+};
+
+#ifdef CONFIG_PM
+static int sead3_led_suspend(struct platform_device *dev,
+               pm_message_t state)
+{
+       led_classdev_suspend(&sead3_pled);
+       led_classdev_suspend(&sead3_fled);
+       return 0;
+}
+
+static int sead3_led_resume(struct platform_device *dev)
+{
+       led_classdev_resume(&sead3_pled);
+       led_classdev_resume(&sead3_fled);
+       return 0;
+}
+#else
+#define sead3_led_suspend NULL
+#define sead3_led_resume NULL
+#endif
+
+static int sead3_led_probe(struct platform_device *pdev)
+{
+       int ret;
+
+       ret = led_classdev_register(&pdev->dev, &sead3_pled);
+       if (ret < 0)
+               return ret;
+
+       ret = led_classdev_register(&pdev->dev, &sead3_fled);
+       if (ret < 0)
+               led_classdev_unregister(&sead3_pled);
+
+       return ret;
+}
+
+static int sead3_led_remove(struct platform_device *pdev)
+{
+       led_classdev_unregister(&sead3_pled);
+       led_classdev_unregister(&sead3_fled);
+       return 0;
+}
+
+static struct platform_driver sead3_led_driver = {
+       .probe          = sead3_led_probe,
+       .remove         = sead3_led_remove,
+       .suspend        = sead3_led_suspend,
+       .resume         = sead3_led_resume,
+       .driver         = {
+               .name           = DRVNAME,
+               .owner          = THIS_MODULE,
+       },
+};
+
+static int __init sead3_led_init(void)
+{
+       int ret;
+
+       ret = platform_driver_register(&sead3_led_driver);
+       if (ret < 0)
+               goto out;
+
+       pdev = platform_device_register_simple(DRVNAME, -1, NULL, 0);
+       if (IS_ERR(pdev)) {
+               ret = PTR_ERR(pdev);
+               platform_driver_unregister(&sead3_led_driver);
+               goto out;
+       }
+
+out:
+       return ret;
+}
+
+static void __exit sead3_led_exit(void)
+{
+       platform_device_unregister(pdev);
+       platform_driver_unregister(&sead3_led_driver);
+}
+
+module_init(sead3_led_init);
+module_exit(sead3_led_exit);
+
+MODULE_AUTHOR("Kristian Kielhofner <kris@krisk.org>");
+MODULE_DESCRIPTION("SEAD3 LED driver");
+MODULE_LICENSE("GPL");
+