dirty fix to merging

1 files changed, 269 insertions, 0 deletions

diff --git a/drivers/leds/leds-88pm860x.c b/drivers/leds/leds-88pm860x.c
new file mode 100644
index 00000000..5b61aaf7
--- /dev/null
+++ b/drivers/leds/leds-88pm860x.c
@@ -0,0 +1,269 @@
+/*
+ * LED driver for Marvell 88PM860x
+ *
+ * Copyright (C) 2009 Marvell International Ltd.
+ *	Haojian Zhuang <haojian.zhuang@marvell.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/i2c.h>
+#include <linux/leds.h>
+#include <linux/slab.h>
+#include <linux/workqueue.h>
+#include <linux/mfd/88pm860x.h>
+#include <linux/module.h>
+
+#define LED_PWM_SHIFT		(3)
+#define LED_PWM_MASK		(0x1F)
+#define LED_CURRENT_MASK	(0x07 << 5)
+
+#define LED_BLINK_ON_MASK	(0x07)
+#define LED_BLINK_MASK		(0x7F)
+
+#define LED_BLINK_ON(x)		((x & 0x7) * 66 + 66)
+#define LED_BLINK_ON_MIN	LED_BLINK_ON(0)
+#define LED_BLINK_ON_MAX	LED_BLINK_ON(0x7)
+#define LED_ON_CONTINUOUS	(0x0F << 3)
+#define LED_TO_ON(x)		((x - 66) / 66)
+
+#define LED1_BLINK_EN		(1 << 1)
+#define LED2_BLINK_EN		(1 << 2)
+
+struct pm860x_led {
+	struct led_classdev cdev;
+	struct i2c_client *i2c;
+	struct work_struct work;
+	struct pm860x_chip *chip;
+	struct mutex lock;
+	char name[MFD_NAME_SIZE];
+
+	int port;
+	int iset;
+	unsigned char brightness;
+	unsigned char current_brightness;
+
+	int blink_data;
+	int blink_time;
+	int blink_on;
+	int blink_off;
+};
+
+/* return offset of color register */
+static inline int __led_off(int port)
+{
+	int ret = -EINVAL;
+
+	switch (port) {
+	case PM8606_LED1_RED:
+	case PM8606_LED1_GREEN:
+	case PM8606_LED1_BLUE:
+		ret = port - PM8606_LED1_RED + PM8606_RGB1B;
+		break;
+	case PM8606_LED2_RED:
+	case PM8606_LED2_GREEN:
+	case PM8606_LED2_BLUE:
+		ret = port - PM8606_LED2_RED + PM8606_RGB2B;
+		break;
+	}
+	return ret;
+}
+
+/* return offset of blink register */
+static inline int __blink_off(int port)
+{
+	int ret = -EINVAL;
+
+	switch (port) {
+	case PM8606_LED1_RED:
+	case PM8606_LED1_GREEN:
+	case PM8606_LED1_BLUE:
+		ret = PM8606_RGB1A;
+		break;
+	case PM8606_LED2_RED:
+	case PM8606_LED2_GREEN:
+	case PM8606_LED2_BLUE:
+		ret = PM8606_RGB2A;
+		break;
+	}
+	return ret;
+}
+
+static inline int __blink_ctl_mask(int port)
+{
+	int ret = -EINVAL;
+
+	switch (port) {
+	case PM8606_LED1_RED:
+	case PM8606_LED1_GREEN:
+	case PM8606_LED1_BLUE:
+		ret = LED1_BLINK_EN;
+		break;
+	case PM8606_LED2_RED:
+	case PM8606_LED2_GREEN:
+	case PM8606_LED2_BLUE:
+		ret = LED2_BLINK_EN;
+		break;
+	}
+	return ret;
+}
+
+static int led_power_set(struct pm860x_chip *chip, int port, int on)
+{
+	int ret = -EINVAL;
+
+	switch (port) {
+	case PM8606_LED1_RED:
+	case PM8606_LED1_GREEN:
+	case PM8606_LED1_BLUE:
+		ret = on ? pm8606_osc_enable(chip, RGB1_ENABLE) :
+			pm8606_osc_disable(chip, RGB1_ENABLE);
+		break;
+	case PM8606_LED2_RED:
+	case PM8606_LED2_GREEN:
+	case PM8606_LED2_BLUE:
+		ret = on ? pm8606_osc_enable(chip, RGB2_ENABLE) :
+			pm8606_osc_disable(chip, RGB2_ENABLE);
+		break;
+	}
+	return ret;
+}
+
+static void pm860x_led_work(struct work_struct *work)
+{
+
+	struct pm860x_led *led;
+	struct pm860x_chip *chip;
+	unsigned char buf[3];
+	int mask, ret;
+
+	led = container_of(work, struct pm860x_led, work);
+	chip = led->chip;
+	mutex_lock(&led->lock);
+	if ((led->current_brightness == 0) && led->brightness) {
+		led_power_set(chip, led->port, 1);
+		if (led->iset) {
+			pm860x_set_bits(led->i2c, __led_off(led->port),
+					LED_CURRENT_MASK, led->iset);
+		}
+		pm860x_set_bits(led->i2c, __blink_off(led->port),
+				LED_BLINK_MASK, LED_ON_CONTINUOUS);
+		mask = __blink_ctl_mask(led->port);
+		pm860x_set_bits(led->i2c, PM8606_WLED3B, mask, mask);
+	}
+	pm860x_set_bits(led->i2c, __led_off(led->port), LED_PWM_MASK,
+			led->brightness);
+
+	if (led->brightness == 0) {
+		pm860x_bulk_read(led->i2c, __led_off(led->port), 3, buf);
+		ret = buf[0] & LED_PWM_MASK;
+		ret |= buf[1] & LED_PWM_MASK;
+		ret |= buf[2] & LED_PWM_MASK;
+		if (ret == 0) {
+			/* unset current since no led is lighting */
+			pm860x_set_bits(led->i2c, __led_off(led->port),
+					LED_CURRENT_MASK, 0);
+			mask = __blink_ctl_mask(led->port);
+			pm860x_set_bits(led->i2c, PM8606_WLED3B, mask, 0);
+			led_power_set(chip, led->port, 0);
+		}
+	}
+	led->current_brightness = led->brightness;
+	dev_dbg(chip->dev, "Update LED. (reg:%d, brightness:%d)\n",
+		__led_off(led->port), led->brightness);
+	mutex_unlock(&led->lock);
+}
+
+static void pm860x_led_set(struct led_classdev *cdev,
+			   enum led_brightness value)
+{
+	struct pm860x_led *data = container_of(cdev, struct pm860x_led, cdev);
+
+	data->brightness = value >> 3;
+	schedule_work(&data->work);
+}
+
+static int pm860x_led_probe(struct platform_device *pdev)
+{
+	struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
+	struct pm860x_led_pdata *pdata;
+	struct pm860x_led *data;
+	struct resource *res;
+	int ret;
+
+	res = platform_get_resource(pdev, IORESOURCE_IO, 0);
+	if (res == NULL) {
+		dev_err(&pdev->dev, "No I/O resource!\n");
+		return -EINVAL;
+	}
+
+	pdata = pdev->dev.platform_data;
+	if (pdata == NULL) {
+		dev_err(&pdev->dev, "No platform data!\n");
+		return -EINVAL;
+	}
+
+	data = kzalloc(sizeof(struct pm860x_led), GFP_KERNEL);
+	if (data == NULL)
+		return -ENOMEM;
+	strncpy(data->name, res->name, MFD_NAME_SIZE - 1);
+	dev_set_drvdata(&pdev->dev, data);
+	data->chip = chip;
+	data->i2c = (chip->id == CHIP_PM8606) ? chip->client : chip->companion;
+	data->iset = pdata->iset;
+	data->port = pdata->flags;
+	if (data->port < 0) {
+		dev_err(&pdev->dev, "check device failed\n");
+		kfree(data);
+		return -EINVAL;
+	}
+
+	data->current_brightness = 0;
+	data->cdev.name = data->name;
+	data->cdev.brightness_set = pm860x_led_set;
+	mutex_init(&data->lock);
+	INIT_WORK(&data->work, pm860x_led_work);
+
+	ret = led_classdev_register(chip->dev, &data->cdev);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "Failed to register LED: %d\n", ret);
+		goto out;
+	}
+	pm860x_led_set(&data->cdev, 0);
+	return 0;
+out:
+	kfree(data);
+	return ret;
+}
+
+static int pm860x_led_remove(struct platform_device *pdev)
+{
+	struct pm860x_led *data = platform_get_drvdata(pdev);
+
+	led_classdev_unregister(&data->cdev);
+	kfree(data);
+
+	return 0;
+}
+
+static struct platform_driver pm860x_led_driver = {
+	.driver	= {
+		.name	= "88pm860x-led",
+		.owner	= THIS_MODULE,
+	},
+	.probe	= pm860x_led_probe,
+	.remove	= pm860x_led_remove,
+};
+
+module_platform_driver(pm860x_led_driver);
+
+MODULE_DESCRIPTION("LED driver for Marvell PM860x");
+MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:88pm860x-led");