Initial Contribution
msm-2.6.38: tag AU_LINUX_ANDROID_GINGERBREAD.02.03.04.00.142
Signed-off-by: Bryan Huntsman <bryanh@codeaurora.org>
diff --git a/drivers/leds/leds-qci-backlight.c b/drivers/leds/leds-qci-backlight.c
new file mode 100644
index 0000000..67502e8
--- /dev/null
+++ b/drivers/leds/leds-qci-backlight.c
@@ -0,0 +1,71 @@
+/* Quanta I2C Backlight Driver
+ *
+ * Copyright (C) 2009 Quanta Computer Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+/*
+ *
+ * The Driver with I/O communications via the I2C Interface for ST15 platform.
+ * And it is only working on the nuvoTon WPCE775x Embedded Controller.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/leds.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <linux/wpce775x.h>
+
+#define EC_CMD_SET_BACKLIGHT 0xB1
+
+static void qci_backlight_store(struct led_classdev *led_cdev,
+ enum led_brightness val);
+
+static struct platform_device *bl_pdev;
+static struct led_classdev lcd_backlight = {
+ .name = "lcd-backlight",
+ .brightness = 147,
+ .brightness_set = qci_backlight_store,
+};
+
+static void qci_backlight_store(struct led_classdev *led_cdev,
+ enum led_brightness val)
+{
+ u16 value = val;
+ wpce_smbus_write_word_data(EC_CMD_SET_BACKLIGHT, value);
+ msleep(10);
+
+ dev_dbg(&bl_pdev->dev, "[backlight_store] : value = %d\n", value);
+}
+
+static int __init qci_backlight_init(void)
+{
+ int err = 0;
+ bl_pdev = platform_device_register_simple("backlight", 0, NULL, 0);
+ err = led_classdev_register(&bl_pdev->dev, &lcd_backlight);
+ return err;
+}
+
+static void __exit qci_backlight_exit(void)
+{
+ led_classdev_unregister(&lcd_backlight);
+ platform_device_unregister(bl_pdev);
+}
+
+module_init(qci_backlight_init);
+module_exit(qci_backlight_exit);
+
+MODULE_AUTHOR("Quanta Computer Inc.");
+MODULE_DESCRIPTION("Quanta Embedded Controller I2C Backlight Driver");
+MODULE_LICENSE("GPL v2");
+