Message-Id: <1363964122-19201-10-git-send-email-ian@slimlogic.co.uk>
Date:	Fri, 22 Mar 2013 14:55:19 +0000
From:	Ian Lartey <ian@...mlogic.co.uk>
To:	linux-kernel@...r.kernel.org
Cc:	linux-doc@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-leds@...r.kernel.org, linux-watchdog@...r.kernel.org,
	devicetree-discuss@...ts.ozlabs.org, swarren@...dotorg.org,
	grant.likely@...retlab.ca, broonie@...nsource.wolfsonmicro.com,
	rob.herring@...xeda.com, rob@...dley.net, mturquette@...aro.org,
	linus.walleij@...aro.org, cooloney@...il.com, sfr@...b.auug.org.au,
	rpurdie@...ys.net, akpm@...ux-foundation.org,
	sameo@...ux.intel.com, wim@...ana.be, lgirdwood@...il.com,
	gg@...mlogic.co.uk, j-keerthy@...com, ldewangan@...dia.com,
	t-kristo@...com
Subject: [PATCH v10 09/12] leds: Add support for Palmas LEDs

The Palmas familly of chips has LED support. This is not always muxed
to output pins so depending on the setting of the mux this driver
will create the appropriate LED class devices.

Signed-off-by: Graeme Gregory <gg@...mlogic.co.uk>
Signed-off-by: Ian Lartey <ian@...mlogic.co.uk>
---
 drivers/leds/Kconfig       |    9 +
 drivers/leds/Makefile      |    1 +
 drivers/leds/leds-palmas.c |  561 ++++++++++++++++++++++++++++++++++++++++++++
 include/linux/mfd/palmas.h |   80 +++++++
 4 files changed, 651 insertions(+), 0 deletions(-)
 create mode 100644 drivers/leds/leds-palmas.c

diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index d44806d..249027e 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -479,6 +479,15 @@ config LEDS_BLINKM
 	  This option enables support for the BlinkM RGB LED connected
 	  through I2C. Say Y to enable support for the BlinkM LED.
 
+config LEDS_PALMAS
+	bool "LED support for the Palmas family of PMICs"
+	depends on LEDS_CLASS
+	depends on MFD_PALMAS
+	help
+	  This option enables the driver for LED1 & LED2 pins on Palmas PMIC
+	  if these pins are enabled in the mux configuration. The driver support
+	  ON/OFF and blinking with hardware control.
+
 comment "LED Triggers"
 source "drivers/leds/trigger/Kconfig"
 
diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
index ac28977..3acb116 100644
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -53,6 +53,7 @@ obj-$(CONFIG_LEDS_RENESAS_TPU)		+= leds-renesas-tpu.o
 obj-$(CONFIG_LEDS_MAX8997)		+= leds-max8997.o
 obj-$(CONFIG_LEDS_LM355x)		+= leds-lm355x.o
 obj-$(CONFIG_LEDS_BLINKM)		+= leds-blinkm.o
+obj-$(CONFIG_LEDS_PALMAS)		+= leds-palmas.o
 
 # LED SPI Drivers
 obj-$(CONFIG_LEDS_DAC124S085)		+= leds-dac124s085.o
diff --git a/drivers/leds/leds-palmas.c b/drivers/leds/leds-palmas.c
new file mode 100644
index 0000000..e9da4d1
--- /dev/null
+++ b/drivers/leds/leds-palmas.c
@@ -0,0 +1,561 @@
+/*
+ * Driver for LED part of Palmas PMIC Chips
+ *
+ * Copyright 2011-2013 Texas Instruments Inc.
+ *
+ * Author: Graeme Gregory <gg@...mlogic.co.uk>
+ * Author: Ian Lartey <ian@...mlogic.co.uk>
+ *
+ *  This program is free software; you can redistribute it and/or modify it
+ *  under  the terms of the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the License, or (at your
+ *  option) any later version.
+ *
+ */
+
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/leds.h>
+#include <linux/mfd/palmas.h>
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+struct palmas_leds_data;
+
+enum palmas_led_on_time {
+	LED_ON_62_5MS = 0x00,
+	LED_ON_125MS = 0x01,
+	LED_ON_250MS = 0x02,
+	LED_ON_500MS = 0x03,
+};
+
+enum palmas_led_period {
+	LED_PERIOD_OFF = 0x00,
+	LED_PERIOD_125MS = 0x01,
+	LED_PERIOD_250MS = 0x02,
+	LED_PERIOD_500MS = 0x03,
+	LED_PERIOD_1000MS = 0x04,
+	LED_PERIOD_2000MS = 0x05,
+	LED_PERIOD_4000MS = 0x06,
+	LED_PERIOD_8000MS = 0x07,
+};
+
+struct palmas_led {
+	struct led_classdev cdev;
+	struct palmas_leds_data *leds_data;
+	int led_no;
+	struct work_struct work;
+	struct mutex mutex;
+
+	spinlock_t value_lock;
+
+	int blink;
+	enum palmas_led_on_time on_time;
+	enum palmas_led_period period;
+	enum led_brightness brightness;
+};
+
+struct palmas_leds_data {
+	struct device *dev;
+	struct led_classdev cdev;
+	struct palmas *palmas;
+
+	struct palmas_led *palmas_led;
+	int no_leds;
+};
+
+#define to_palmas_led(led_cdev) \
+	container_of(led_cdev, struct palmas_led, cdev)
+
+static char *palmas_led_names[] = {
+	"palmas:led1",
+	"palmas:led2",
+	"palmas:led3",
+	"palmas:led4",
+};
+
+struct palmas_led_info {
+	int mask;
+	int shift;
+};
+
+struct palmas_led_info led_period_info[] = {
+	{
+		PALMAS_LED_PERIOD_CTRL_LED_1_PERIOD_MASK,
+		PALMAS_LED_PERIOD_CTRL_LED_1_PERIOD_SHIFT,
+	},
+	{
+		PALMAS_LED_PERIOD_CTRL_LED_2_PERIOD_MASK,
+		PALMAS_LED_PERIOD_CTRL_LED_2_PERIOD_SHIFT,
+	},
+	{
+		PALMAS_LED_PERIOD2_CTRL_LED_3_PERIOD_MASK,
+		PALMAS_LED_PERIOD2_CTRL_LED_3_PERIOD_SHIFT,
+	},
+	{
+		PALMAS_LED_PERIOD2_CTRL_CHRG_LED_PERIOD_MASK,
+		PALMAS_LED_PERIOD2_CTRL_CHRG_LED_PERIOD_SHIFT,
+	},
+};
+
+struct palmas_led_info led_time_info[] = {
+	{
+		PALMAS_LED_CTRL_LED_1_ON_TIME_MASK,
+		PALMAS_LED_CTRL_LED_1_ON_TIME_SHIFT,
+	},
+	{
+		PALMAS_LED_CTRL_LED_2_ON_TIME_MASK,
+		PALMAS_LED_CTRL_LED_2_ON_TIME_SHIFT,
+	},
+	{
+		PALMAS_LED_CTRL2_LED_3_ON_TIME_MASK,
+		PALMAS_LED_CTRL2_LED_3_ON_TIME_SHIFT,
+	},
+	{
+		PALMAS_LED_CTRL2_CHRG_LED_ON_TIME_MASK,
+		PALMAS_LED_CTRL2_CHRG_LED_ON_TIME_SHIFT,
+	},
+};
+
+static int palmas_led_read(struct palmas_leds_data *leds, unsigned int reg,
+		unsigned int *dest)
+{
+	return palmas_read(leds->palmas, PALMAS_LED_BASE, reg, dest);
+}
+
+static int palmas_led_write(struct palmas_leds_data *leds, unsigned int reg,
+		unsigned int value)
+{
+	return palmas_write(leds->palmas, PALMAS_LED_BASE, reg, value);
+}
+
+static int palmas_led_update_bits(struct palmas_leds_data *leds,
+		unsigned int reg, unsigned int mask, unsigned int value)
+{
+	return palmas_update_bits(leds->palmas, PALMAS_LED_BASE,
+			reg, mask, value);
+}
+
+static void palmas_get_crtl_and_period(struct palmas_led *led,
+		unsigned int *ctrl, unsigned int *period)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&led->value_lock, flags);
+
+	*ctrl &= ~led_time_info[led->led_no].mask;
+	*period &= ~led_period_info[led->led_no].mask;
+
+	if (led->blink) {
+		*ctrl |= led->on_time << led_time_info[led->led_no].shift;
+		*period |= led->period << led_period_info[led->led_no].shift;
+	} else {
+		/*
+		 * for off value is zero which we already set by
+		 * masking earlier.
+		 */
+		if (led->brightness) {
+			*ctrl |= LED_ON_500MS <<
+					led_time_info[led->led_no].shift;
+			*period |= LED_PERIOD_500MS <<
+			led_period_info[led->led_no].shift;
+		}
+	}
+
+	spin_unlock_irqrestore(&led->value_lock, flags);
+}
+
+static void palmas_leds_work(struct work_struct *work)
+{
+	struct palmas_led *led = container_of(work, struct palmas_led, work);
+	unsigned int period, ctrl;
+
+	mutex_lock(&led->mutex);
+
+	palmas_led_read(led->leds_data, PALMAS_LED_CTRL, &ctrl);
+	palmas_led_read(led->leds_data, PALMAS_LED_PERIOD_CTRL, &period);
+
+	palmas_get_crtl_and_period(led, &ctrl, &period);
+
+	if (led->led_no < 3) {
+		palmas_led_write(led->leds_data, PALMAS_LED_CTRL, ctrl);
+		palmas_led_write(led->leds_data, PALMAS_LED_PERIOD_CTRL,
+				period);
+	} else {
+		palmas_led_write(led->leds_data, PALMAS_LED_CTRL2, ctrl);
+		palmas_led_write(led->leds_data, PALMAS_LED_PERIOD2_CTRL,
+				period);
+	}
+
+	if (is_palmas_charger(led->leds_data->palmas->product_id)) {
+		if (led->brightness || led->blink)
+			palmas_led_update_bits(led->leds_data, PALMAS_LED_EN,
+					1 << (led->led_no - 1), 0xFF);
+		else
+			palmas_led_update_bits(led->leds_data, PALMAS_LED_EN,
+					1 << (led->led_no - 1), 0x00);
+	}
+	mutex_unlock(&led->mutex);
+}
+
+static void palmas_leds_set(struct led_classdev *led_cdev,
+			   enum led_brightness value)
+{
+	struct palmas_led *led = to_palmas_led(led_cdev);
+	unsigned long flags;
+
+	spin_lock_irqsave(&led->value_lock, flags);
+	led->brightness = value;
+	led->blink = 0;
+	schedule_work(&led->work);
+	spin_unlock_irqrestore(&led->value_lock, flags);
+}
+
+static int palmas_leds_blink_set(struct led_classdev *led_cdev,
+				   unsigned long *delay_on,
+				   unsigned long *delay_off)
+{
+	struct palmas_led *led = to_palmas_led(led_cdev);
+	unsigned long flags;
+	int ret = 0;
+	int period;
+
+	/* Pick some defaults if we've not been given times */
+	if (*delay_on == 0 && *delay_off == 0) {
+		*delay_on = 250;
+		*delay_off = 250;
+	}
+
+	spin_lock_irqsave(&led->value_lock, flags);
+
+	/*
+	 * We only have a limited selection of settings, see if we can
+	 * support the configuration we're being given
+	 */
+	switch (*delay_on) {
+	case 500:
+		led->on_time = LED_ON_500MS;
+		break;
+	case 250:
+		led->on_time = LED_ON_250MS;
+		break;
+	case 125:
+		led->on_time = LED_ON_125MS;
+		break;
+	case 62:
+	case 63:
+		/* Actually 62.5ms */
+		led->on_time = LED_ON_62_5MS;
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+	period = *delay_on + *delay_off;
+
+	if (ret == 0) {
+		switch (period) {
+		case 124:
+		case 125:
+		case 126:
+			/* All possible variations of 62.5 + 62.5 */
+			led->period = LED_PERIOD_125MS;
+			break;
+		case 250:
+			led->period = LED_PERIOD_250MS;
+			break;
+		case 500:
+			led->period = LED_PERIOD_500MS;
+			break;
+		case 1000:
+			led->period = LED_PERIOD_1000MS;
+			break;
+		case 2000:
+			led->period = LED_PERIOD_2000MS;
+			break;
+		case 4000:
+			led->period = LED_PERIOD_4000MS;
+			break;
+		case 8000:
+			led->period = LED_PERIOD_8000MS;
+			break;
+		default:
+			ret = -EINVAL;
+			break;
+		}
+	}
+
+	if (ret == 0)
+		led->blink = 1;
+	else
+		led->blink = 0;
+
+	/*
+	 * Always update; if we fail turn off blinking since we expect
+	 * a software fallback.
+	 */
+	schedule_work(&led->work);
+
+	spin_unlock_irqrestore(&led->value_lock, flags);
+
+	return ret;
+}
+
+static void palmas_init_led(struct palmas_leds_data *leds_data, int offset,
+		int led_no)
+{
+	mutex_init(&leds_data->palmas_led[offset].mutex);
+	INIT_WORK(&leds_data->palmas_led[offset].work, palmas_leds_work);
+	spin_lock_init(&leds_data->palmas_led[offset].value_lock);
+
+	leds_data->palmas_led[offset].leds_data = leds_data;
+	leds_data->palmas_led[offset].led_no = led_no;
+	leds_data->palmas_led[offset].cdev.name = palmas_led_names[led_no - 1];
+	leds_data->palmas_led[offset].cdev.default_trigger = NULL;
+	leds_data->palmas_led[offset].cdev.brightness_set = palmas_leds_set;
+	leds_data->palmas_led[offset].cdev.blink_set = palmas_leds_blink_set;
+}
+
+
+static int  palmas_dt_to_pdata(struct device *dev,
+		struct device_node *node,
+		struct palmas_leds_platform_data *pdata)
+{
+	int ret;
+	u32 prop;
+
+	ret = of_property_read_u32(node, "ti,led1-current", &prop);
+	if (!ret) {
+		if (is_palmas_led_current_ok(prop))
+			pdata->led1_current = prop;
+		else
+			goto err;
+	}
+
+	ret = of_property_read_u32(node, "ti,led2-current", &prop);
+	if (!ret) {
+		if (is_palmas_led_current_ok(prop))
+			pdata->led2_current = prop;
+		else
+			goto err;
+	}
+
+	ret = of_property_read_u32(node, "ti,led3-current", &prop);
+	if (!ret) {
+		if (is_palmas_led_current_ok(prop))
+			pdata->led3_current = prop;
+		else
+			goto err;
+	}
+
+	ret = of_property_read_u32(node, "ti,led4-current", &prop);
+	if (!ret) {
+		if (is_palmas_led_current_ok(prop))
+			pdata->led4_current = prop;
+		else
+			goto err;
+	}
+
+	ret = of_property_read_u32(node, "ti,chrg-led-mode", &prop);
+	if (!ret)
+		pdata->chrg_led_mode = prop;
+
+	ret = of_property_read_u32(node, "ti,chrg-led-vbat-low", &prop);
+	if (!ret)
+		pdata->chrg_led_vbat_low = prop;
+
+	return 0;
+
+err:
+	dev_err(dev, "there are no LED curent  - out of bounds\n");
+	return -EINVAL;
+}
+
+static int palmas_leds_probe(struct platform_device *pdev)
+{
+	struct palmas *palmas = dev_get_drvdata(pdev->dev.parent);
+	struct palmas_leds_platform_data *pdata = pdev->dev.platform_data;
+	struct palmas_leds_data *leds_data;
+	struct device_node *node = pdev->dev.of_node;
+	int ret, i;
+	int offset = 0;
+
+	if (!palmas->led_muxed && !is_palmas_charger(palmas->product_id)) {
+		dev_err(&pdev->dev, "there are no LEDs muxed\n");
+		return -EINVAL;
+	}
+
+	/* Palmas charger requires platform data */
+	if (is_palmas_charger(palmas->product_id) && node && !pdata) {
+
+		if (!pdata)
+			return -ENOMEM;
+
+		ret = palmas_dt_to_pdata(&pdev->dev, node, pdata);
+		if (ret)
+			return ret;
+	}
+
+	if (is_palmas_charger(palmas->product_id) && !pdata)
+		return -EINVAL;
+
+	leds_data = devm_kzalloc(&pdev->dev, sizeof(*leds_data), GFP_KERNEL);
+	if (!leds_data)
+		return -ENOMEM;
+	platform_set_drvdata(pdev, leds_data);
+
+	leds_data->palmas = palmas;
+
+	switch (palmas->led_muxed) {
+	case PALMAS_LED1_MUXED | PALMAS_LED2_MUXED:
+		leds_data->no_leds = 2;
+		break;
+	case PALMAS_LED1_MUXED:
+	case PALMAS_LED2_MUXED:
+		leds_data->no_leds = 1;
+		break;
+	default:
+		leds_data->no_leds = 0;
+		break;
+	}
+
+	if (is_palmas_charger(palmas->product_id)) {
+		if (pdata->chrg_led_mode)
+			leds_data->no_leds += 2;
+		else
+			leds_data->no_leds++;
+	}
+
+	if (leds_data->no_leds == 0)
+		leds_data->palmas_led = NULL;
+	else
+		leds_data = devm_kzalloc(&pdev->dev,
+				leds_data->no_leds * sizeof(*leds_data),
+				GFP_KERNEL);
+
+	/* Initialise LED1 */
+	if (palmas->led_muxed & PALMAS_LED1_MUXED) {
+		palmas_init_led(leds_data, offset, 1);
+		offset++;
+	}
+
+	/* Initialise LED2 */
+	if (palmas->led_muxed & PALMAS_LED2_MUXED) {
+		palmas_init_led(leds_data, offset, 2);
+		offset++;
+	}
+
+	if (is_palmas_charger(palmas->product_id)) {
+		palmas_init_led(leds_data, offset, 3);
+		offset++;
+
+		if (pdata->chrg_led_mode) {
+			palmas_led_update_bits(leds_data, PALMAS_CHRG_LED_CTRL,
+					PALMAS_CHRG_LED_CTRL_CHRG_LED_MODE,
+					PALMAS_CHRG_LED_CTRL_CHRG_LED_MODE);
+
+			palmas_init_led(leds_data, offset, 4);
+		}
+	}
+
+	for (i = 0; i < leds_data->no_leds; i++) {
+		ret = led_classdev_register(leds_data->dev,
+				&leds_data->palmas_led[i].cdev);
+		if (ret < 0) {
+			dev_err(&pdev->dev,
+				"Failed to register LED no: %d err: %d\n",
+				i, ret);
+			goto err_led;
+		}
+	}
+
+	if (!is_palmas_charger(palmas->product_id))
+		return 0;
+
+	/* Set the LED current registers if set in platform data */
+	if (pdata->led1_current)
+		palmas_led_update_bits(leds_data, PALMAS_LED_CURRENT_CTRL1,
+				PALMAS_LED_CURRENT_CTRL1_LED_1_CURRENT_MASK,
+				pdata->led1_current);
+
+	if (pdata->led2_current)
+		palmas_led_update_bits(leds_data, PALMAS_LED_CURRENT_CTRL1,
+				PALMAS_LED_CURRENT_CTRL1_LED_2_CURRENT_MASK,
+				pdata->led2_current <<
+				PALMAS_LED_CURRENT_CTRL1_LED_2_CURRENT_SHIFT);
+
+	if (pdata->led3_current)
+		palmas_led_update_bits(leds_data, PALMAS_LED_CURRENT_CTRL2,
+				PALMAS_LED_CURRENT_CTRL2_LED_3_CURRENT_MASK,
+				pdata->led3_current);
+
+	if (pdata->led3_current)
+		palmas_led_update_bits(leds_data, PALMAS_LED_CURRENT_CTRL2,
+				PALMAS_LED_CURRENT_CTRL2_LED_3_CURRENT_MASK,
+				pdata->led3_current);
+
+	if (pdata->led4_current)
+		palmas_led_update_bits(leds_data, PALMAS_CHRG_LED_CTRL,
+				PALMAS_CHRG_LED_CTRL_CHRG_LED_CURRENT_MASK,
+				pdata->led4_current <<
+				PALMAS_CHRG_LED_CTRL_CHRG_LED_CURRENT_SHIFT);
+
+	if (pdata->chrg_led_vbat_low)
+		palmas_led_update_bits(leds_data, PALMAS_CHRG_LED_CTRL,
+				PALMAS_CHRG_LED_CTRL_CHRG_LOWBAT_BLK_DIS,
+				PALMAS_CHRG_LED_CTRL_CHRG_LOWBAT_BLK_DIS);
+
+	return 0;
+
+err_led:
+	for (i = 0; i < leds_data->no_leds; i++)
+		led_classdev_unregister(&leds_data->palmas_led[i].cdev);
+	return ret;
+}
+
+static int palmas_leds_remove(struct platform_device *pdev)
+{
+	struct palmas_leds_data *leds_data = platform_get_drvdata(pdev);
+	int i;
+
+	for (i = 0; i < leds_data->no_leds; i++)
+		led_classdev_unregister(&leds_data->palmas_led[i].cdev);
+	if (i)
+		kfree(leds_data->palmas_led);
+	kfree(leds_data);
+
+	return 0;
+}
+
+static struct of_device_id of_palmas_match_tbl[] = {
+	{ .compatible = "ti,palmas-leds", },
+	{ .compatible = "ti,twl6035-leds", },
+	{ .compatible = "ti,twl6036-leds", },
+	{ .compatible = "ti,twl6037-leds", },
+	{ .compatible = "ti,tps65913-leds", },
+	{ .compatible = "ti,tps65914-leds", },
+	{ .compatible = "ti,tps80036-leds", },
+	{ /* end */ }
+};
+
+static struct platform_driver palmas_leds_driver = {
+	.driver = {
+		.name = "palmas-leds",
+		.of_match_table = of_palmas_match_tbl,
+		.owner = THIS_MODULE,
+	},
+	.probe = palmas_leds_probe,
+	.remove = palmas_leds_remove,
+};
+
+module_platform_driver(palmas_leds_driver);
+
+MODULE_AUTHOR("Graeme Gregory <gg@...mlogic.co.uk>");
+MODULE_DESCRIPTION("Palmas LED driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:palmas-leds");
+MODULE_DEVICE_TABLE(of, of_palmas_match_tbl);
diff --git a/include/linux/mfd/palmas.h b/include/linux/mfd/palmas.h
index d8c303b..73186c8 100644
--- a/include/linux/mfd/palmas.h
+++ b/include/linux/mfd/palmas.h
@@ -232,6 +232,36 @@ struct palmas_clk_platform_data {
 	int clk32kgaudio_mode_sleep;
 };
 
+enum palmas_led_current {
+	PALMAS_ILED_0mA = 0,		/*  0    mA */
+	PALMAS_ILED_0m25A,		/*  0.25 mA */
+	PALMAS_ILED_0m5A,		/*  0.5  mA */
+	PALMAS_ILED_1m0A,		/*  1.0  mA */
+	PALMAS_ILED_2m5A,		/*  2.5  mA */
+	PALMAS_ILED_5m0A,		/*  5.0  mA */
+	PALMAS_ILED_10m0A,		/* 10.0  mA */
+	PALMAS_ILED_0m0A,		/*  0    mA */
+};
+
+#define is_palmas_led_current_ok(a) (((a) == PALMAS_ILED_0mA) || \
+		((a) == PALMAS_ILED_0m25A) || \
+		((a) == PALMAS_ILED_0m5A) || \
+		((a) == PALMAS_ILED_1m0A) || \
+		((a) == PALMAS_ILED_2m5A) || \
+		((a) == PALMAS_ILED_5m0A) || \
+		((a) == PALMAS_ILED_10m0A) || \
+		((a) == PALMAS_ILED_0m0A))
+
+struct palmas_leds_platform_data {
+	int led1_current;
+	int led2_current;
+	int led3_current;
+	int led4_current;
+
+	int chrg_led_mode;
+	int chrg_led_vbat_low;
+};
+
 struct palmas_platform_data {
 	int irq_flags;
 	int gpio_base;
@@ -1856,6 +1886,12 @@ enum usb_irq_events {
 #define PALMAS_LED_CTRL						0x1
 #define PALMAS_PWM_CTRL1					0x2
 #define PALMAS_PWM_CTRL2					0x3
+#define PALMAS_LED_PERIOD2_CTRL					0x4
+#define PALMAS_LED_CTRL2					0x5
+#define PALMAS_LED_CURRENT_CTRL1				0x6
+#define PALMAS_LED_CURRENT_CTRL2				0x7
+#define PALMAS_CHRG_LED_CTRL					0x8
+#define PALMAS_LED_EN						0x9
 
 /* Bit definitions for LED_PERIOD_CTRL */
 #define PALMAS_LED_PERIOD_CTRL_LED_2_PERIOD_MASK		0x38
@@ -1883,6 +1919,50 @@ enum usb_irq_events {
 #define PALMAS_PWM_CTRL2_PWM_DUTY_SEL_MASK			0xff
 #define PALMAS_PWM_CTRL2_PWM_DUTY_SEL_SHIFT			0
 
+/* Bit definitions for LED_PERIOD2_CTRL */
+#define PALMAS_LED_PERIOD2_CTRL_CHRG_LED_PERIOD_MASK		0x38
+#define PALMAS_LED_PERIOD2_CTRL_CHRG_LED_PERIOD_SHIFT		3
+#define PALMAS_LED_PERIOD2_CTRL_LED_3_PERIOD_MASK		0x07
+#define PALMAS_LED_PERIOD2_CTRL_LED_3_PERIOD_SHIFT		0
+
+/* Bit definitions for LED_CTRL2 */
+#define PALMAS_LED_CTRL2_CHRG_LED_SEQ				0x20
+#define PALMAS_LED_CTRL2_CHRG_LED_SEQ_SHIFT			5
+#define PALMAS_LED_CTRL2_LED_3_SEQ				0x10
+#define PALMAS_LED_CTRL2_LED_3_SEQ_SHIFT			4
+#define PALMAS_LED_CTRL2_CHRG_LED_ON_TIME_MASK			0x0c
+#define PALMAS_LED_CTRL2_CHRG_LED_ON_TIME_SHIFT			2
+#define PALMAS_LED_CTRL2_LED_3_ON_TIME_MASK			0x03
+#define PALMAS_LED_CTRL2_LED_3_ON_TIME_SHIFT			0
+
+/* Bit definitions for LED_CURRENT_CTRL1 */
+#define PALMAS_LED_CURRENT_CTRL1_LED_2_CURRENT_MASK		0x38
+#define PALMAS_LED_CURRENT_CTRL1_LED_2_CURRENT_SHIFT		3
+#define PALMAS_LED_CURRENT_CTRL1_LED_1_CURRENT_MASK		0x07
+#define PALMAS_LED_CURRENT_CTRL1_LED_1_CURRENT_SHIFT		0
+
+/* Bit definitions for LED_CURRENT_CTRL2 */
+#define PALMAS_LED_CURRENT_CTRL2_LED_3_CURRENT_MASK		0x07
+#define PALMAS_LED_CURRENT_CTRL2_LED_3_CURRENT_SHIFT		0
+
+/* Bit definitions for CHRG_LED_CTRL */
+#define PALMAS_CHRG_LED_CTRL_CHRG_LED_CURRENT_MASK		0x38
+#define PALMAS_CHRG_LED_CTRL_CHRG_LED_CURRENT_SHIFT		3
+#define PALMAS_CHRG_LED_CTRL_CHRG_LOWBAT_BLK_DIS		0x02
+#define PALMAS_CHRG_LED_CTRL_CHRG_LOWBAT_BLK_DIS_SHIFT		1
+#define PALMAS_CHRG_LED_CTRL_CHRG_LED_MODE			0x01
+#define PALMAS_CHRG_LED_CTRL_CHRG_LED_MODE_SHIFT		0
+
+/* Bit definitions for LED_EN */
+#define PALMAS_LED_EN_CHRG_LED_EN				0x08
+#define PALMAS_LED_EN_CHRG_LED_EN_SHIFT				3
+#define PALMAS_LED_EN_LED_3_EN					0x04
+#define PALMAS_LED_EN_LED_3_EN_SHIFT				2
+#define PALMAS_LED_EN_LED_2_EN					0x02
+#define PALMAS_LED_EN_LED_2_EN_SHIFT				1
+#define PALMAS_LED_EN_LED_1_EN					0x01
+#define PALMAS_LED_EN_LED_1_EN_SHIFT				0
+
 /* Registers for function INTERRUPT */
 #define PALMAS_INT1_STATUS					0x0
 #define PALMAS_INT1_MASK					0x1
-- 
1.7.0.4

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