Merge commit 'mfd/for-next'

6 files changed, 404 insertions, 35 deletions

diff --git a/drivers/mfd/ab3100-core.c b/drivers/mfd/ab3100-core.c
index 13e7d7bfe85f..8ff10cb77cac 100644
--- a/drivers/mfd/ab3100-core.c
+++ b/drivers/mfd/ab3100-core.c
@@ -465,14 +465,14 @@ static int ab3100_get_set_reg_open_file(struct inode *inode, struct file *file)
 	return 0;
 }
 
-static int ab3100_get_set_reg(struct file *file,
-			      const char __user *user_buf,
-			      size_t count, loff_t *ppos)
+static ssize_t ab3100_get_set_reg(struct file *file,
+				  const char __user *user_buf,
+				  size_t count, loff_t *ppos)
 {
 	struct ab3100_get_set_reg_priv *priv = file->private_data;
 	struct ab3100 *ab3100 = priv->ab3100;
 	char buf[32];
-	int buf_size;
+	ssize_t buf_size;
 	int regp;
 	unsigned long user_reg;
 	int err;
diff --git a/drivers/mfd/ezx-pcap.c b/drivers/mfd/ezx-pcap.c
index c1de4afa89a6..86d394894d81 100644
--- a/drivers/mfd/ezx-pcap.c
+++ b/drivers/mfd/ezx-pcap.c
@@ -17,6 +17,7 @@
 #include <linux/irq.h>
 #include <linux/mfd/ezx-pcap.h>
 #include <linux/spi/spi.h>
+#include <linux/gpio.h>
 
 #define PCAP_ADC_MAXQ		8
 struct pcap_adc_request {
@@ -106,11 +107,35 @@ int ezx_pcap_read(struct pcap_chip *pcap, u8 reg_num, u32 *value)
 }
 EXPORT_SYMBOL_GPL(ezx_pcap_read);
 
+int ezx_pcap_set_bits(struct pcap_chip *pcap, u8 reg_num, u32 mask, u32 val)
+{
+	int ret;
+	u32 tmp = PCAP_REGISTER_READ_OP_BIT |
+		(reg_num << PCAP_REGISTER_ADDRESS_SHIFT);
+
+	mutex_lock(&pcap->io_mutex);
+	ret = ezx_pcap_putget(pcap, &tmp);
+	if (ret)
+		goto out_unlock;
+
+	tmp &= (PCAP_REGISTER_VALUE_MASK & ~mask);
+	tmp |= (val & mask) | PCAP_REGISTER_WRITE_OP_BIT |
+		(reg_num << PCAP_REGISTER_ADDRESS_SHIFT);
+
+	ret = ezx_pcap_putget(pcap, &tmp);
+out_unlock:
+	mutex_unlock(&pcap->io_mutex);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(ezx_pcap_set_bits);
+
 /* IRQ */
-static inline unsigned int irq2pcap(struct pcap_chip *pcap, int irq)
+int irq_to_pcap(struct pcap_chip *pcap, int irq)
 {
-	return 1 << (irq - pcap->irq_base);
+	return irq - pcap->irq_base;
 }
+EXPORT_SYMBOL_GPL(irq_to_pcap);
 
 int pcap_to_irq(struct pcap_chip *pcap, int irq)
 {
@@ -122,7 +147,7 @@ static void pcap_mask_irq(unsigned int irq)
 {
 	struct pcap_chip *pcap = get_irq_chip_data(irq);
 
-	pcap->msr |= irq2pcap(pcap, irq);
+	pcap->msr |= 1 << irq_to_pcap(pcap, irq);
 	queue_work(pcap->workqueue, &pcap->msr_work);
 }
 
@@ -130,7 +155,7 @@ static void pcap_unmask_irq(unsigned int irq)
 {
 	struct pcap_chip *pcap = get_irq_chip_data(irq);
 
-	pcap->msr &= ~irq2pcap(pcap, irq);
+	pcap->msr &= ~(1 << irq_to_pcap(pcap, irq));
 	queue_work(pcap->workqueue, &pcap->msr_work);
 }
 
@@ -154,34 +179,38 @@ static void pcap_isr_work(struct work_struct *work)
 	u32 msr, isr, int_sel, service;
 	int irq;
 
-	ezx_pcap_read(pcap, PCAP_REG_MSR, &msr);
-	ezx_pcap_read(pcap, PCAP_REG_ISR, &isr);
+	do {
+		ezx_pcap_read(pcap, PCAP_REG_MSR, &msr);
+		ezx_pcap_read(pcap, PCAP_REG_ISR, &isr);
 
-	/* We cant service/ack irqs that are assigned to port 2 */
-	if (!(pdata->config & PCAP_SECOND_PORT)) {
-		ezx_pcap_read(pcap, PCAP_REG_INT_SEL, &int_sel);
-		isr &= ~int_sel;
-	}
-	ezx_pcap_write(pcap, PCAP_REG_ISR, isr);
+		/* We cant service/ack irqs that are assigned to port 2 */
+		if (!(pdata->config & PCAP_SECOND_PORT)) {
+			ezx_pcap_read(pcap, PCAP_REG_INT_SEL, &int_sel);
+			isr &= ~int_sel;
+		}
 
-	local_irq_disable();
-	service = isr & ~msr;
+		ezx_pcap_write(pcap, PCAP_REG_MSR, isr | msr);
+		ezx_pcap_write(pcap, PCAP_REG_ISR, isr);
 
-	for (irq = pcap->irq_base; service; service >>= 1, irq++) {
-		if (service & 1) {
-			struct irq_desc *desc = irq_to_desc(irq);
+		local_irq_disable();
+		service = isr & ~msr;
+		for (irq = pcap->irq_base; service; service >>= 1, irq++) {
+			if (service & 1) {
+				struct irq_desc *desc = irq_to_desc(irq);
 
-			if (WARN(!desc, KERN_WARNING
-					"Invalid PCAP IRQ %d\n", irq))
-				break;
+				if (WARN(!desc, KERN_WARNING
+						"Invalid PCAP IRQ %d\n", irq))
+					break;
 
-			if (desc->status & IRQ_DISABLED)
-				note_interrupt(irq, desc, IRQ_NONE);
-			else
-				desc->handle_irq(irq, desc);
+				if (desc->status & IRQ_DISABLED)
+					note_interrupt(irq, desc, IRQ_NONE);
+				else
+					desc->handle_irq(irq, desc);
+			}
 		}
-	}
-	local_irq_enable();
+		local_irq_enable();
+		ezx_pcap_write(pcap, PCAP_REG_MSR, pcap->msr);
+	} while (gpio_get_value(irq_to_gpio(pcap->spi->irq)));
 }
 
 static void pcap_irq_handler(unsigned int irq, struct irq_desc *desc)
@@ -194,6 +223,19 @@ static void pcap_irq_handler(unsigned int irq, struct irq_desc *desc)
 }
 
 /* ADC */
+void pcap_set_ts_bits(struct pcap_chip *pcap, u32 bits)
+{
+	u32 tmp;
+
+	mutex_lock(&pcap->adc_mutex);
+	ezx_pcap_read(pcap, PCAP_REG_ADC, &tmp);
+	tmp &= ~(PCAP_ADC_TS_M_MASK | PCAP_ADC_TS_REF_LOWPWR);
+	tmp |= bits & (PCAP_ADC_TS_M_MASK | PCAP_ADC_TS_REF_LOWPWR);
+	ezx_pcap_write(pcap, PCAP_REG_ADC, tmp);
+	mutex_unlock(&pcap->adc_mutex);
+}
+EXPORT_SYMBOL_GPL(pcap_set_ts_bits);
+
 static void pcap_disable_adc(struct pcap_chip *pcap)
 {
 	u32 tmp;
@@ -216,15 +258,16 @@ static void pcap_adc_trigger(struct pcap_chip *pcap)
 		mutex_unlock(&pcap->adc_mutex);
 		return;
 	}
-	mutex_unlock(&pcap->adc_mutex);
-
-	/* start conversion on requested bank */
-	tmp = pcap->adc_queue[head]->flags | PCAP_ADC_ADEN;
+	/* start conversion on requested bank, save TS_M bits */
+	ezx_pcap_read(pcap, PCAP_REG_ADC, &tmp);
+	tmp &= (PCAP_ADC_TS_M_MASK | PCAP_ADC_TS_REF_LOWPWR);
+	tmp |= pcap->adc_queue[head]->flags | PCAP_ADC_ADEN;
 
 	if (pcap->adc_queue[head]->bank == PCAP_ADC_BANK_1)
 		tmp |= PCAP_ADC_AD_SEL1;
 
 	ezx_pcap_write(pcap, PCAP_REG_ADC, tmp);
+	mutex_unlock(&pcap->adc_mutex);
 	ezx_pcap_write(pcap, PCAP_REG_ADR, PCAP_ADR_ASC);
 }
 
diff --git a/drivers/mfd/twl4030-irq.c b/drivers/mfd/twl4030-irq.c
index bae61b22501c..e57f778f405a 100644
--- a/drivers/mfd/twl4030-irq.c
+++ b/drivers/mfd/twl4030-irq.c
@@ -441,7 +441,7 @@ static void twl4030_sih_do_edge(struct work_struct *work)
 	/* see what work we have */
 	spin_lock_irq(&sih_agent_lock);
 	edge_change = agent->edge_change;
-	agent->edge_change = 0;;
+	agent->edge_change = 0;
 	sih = edge_change ? agent->sih : NULL;
 	spin_unlock_irq(&sih_agent_lock);
 	if (!sih)
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index f4317798e47c..da7483ef32b3 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -117,4 +117,11 @@ config REGULATOR_LP3971
 	 Say Y here to support the voltage regulators and convertors
 	 on National Semiconductors LP3971 PMIC
 
+config REGULATOR_PCAP
+	tristate "PCAP2 regulator driver"
+	depends on EZX_PCAP
+	help
+	 This driver provides support for the voltage regulators of the
+	 PCAP2 PMIC.
+
 endif
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 4d762c4cccfd..3a9748ff860b 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -16,5 +16,6 @@ obj-$(CONFIG_REGULATOR_WM8350) += wm8350-regulator.o
 obj-$(CONFIG_REGULATOR_WM8400) += wm8400-regulator.o
 obj-$(CONFIG_REGULATOR_DA903X)	+= da903x.o
 obj-$(CONFIG_REGULATOR_PCF50633) += pcf50633-regulator.o
+obj-$(CONFIG_REGULATOR_PCAP) += pcap-regulator.o
 
 ccflags-$(CONFIG_REGULATOR_DEBUG) += -DDEBUG
diff --git a/drivers/regulator/pcap-regulator.c b/drivers/regulator/pcap-regulator.c
new file mode 100644
index 000000000000..fdb90940ef0f
--- /dev/null
+++ b/drivers/regulator/pcap-regulator.c
@@ -0,0 +1,318 @@
+/*
+ * PCAP2 Regulator Driver
+ *
+ * Copyright (c) 2009 Daniel Ribeiro <drwyrm@gmail.com>
+ *
+ * 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/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/mfd/ezx-pcap.h>
+
+static const u16 V1_table[] = {
+	2775, 1275, 1600, 1725, 1825, 1925, 2075, 2275,
+};
+
+static const u16 V2_table[] = {
+	2500, 2775,
+};
+
+static const u16 V3_table[] = {
+	1075, 1275, 1550, 1725, 1876, 1950, 2075, 2275,
+};
+
+static const u16 V4_table[] = {
+	1275, 1550, 1725, 1875, 1950, 2075, 2275, 2775,
+};
+
+static const u16 V5_table[] = {
+	1875, 2275, 2475, 2775,
+};
+
+static const u16 V6_table[] = {
+	2475, 2775,
+};
+
+static const u16 V7_table[] = {
+	1875, 2775,
+};
+
+#define V8_table V4_table
+
+static const u16 V9_table[] = {
+	1575, 1875, 2475, 2775,
+};
+
+static const u16 V10_table[] = {
+	5000,
+};
+
+static const u16 VAUX1_table[] = {
+	1875, 2475, 2775, 3000,
+};
+
+#define VAUX2_table VAUX1_table
+
+static const u16 VAUX3_table[] = {
+	1200, 1200, 1200, 1200, 1400, 1600, 1800, 2000,
+	2200, 2400, 2600, 2800, 3000, 3200, 3400, 3600,
+};
+
+static const u16 VAUX4_table[] = {
+	1800, 1800, 3000, 5000,
+};
+
+static const u16 VSIM_table[] = {
+	1875, 3000,
+};
+
+static const u16 VSIM2_table[] = {
+	1875,
+};
+
+static const u16 VVIB_table[] = {
+	1300, 1800, 2000, 3000,
+};
+
+static const u16 SW1_table[] = {
+	900, 950, 1000, 1050, 1100, 1150, 1200, 1250,
+	1300, 1350, 1400, 1450, 1500, 1600, 1875, 2250,
+};
+
+#define SW2_table SW1_table
+
+static const u16 SW3_table[] = {
+	4000, 4500, 5000, 5500,
+};
+
+struct pcap_regulator {
+	const u8 reg;
+	const u8 en;
+	const u8 index;
+	const u8 stby;
+	const u8 lowpwr;
+	const u8 n_voltages;
+	const u16 *voltage_table;
+};
+
+#define NA 0xff
+
+#define VREG_INFO(_vreg, _reg, _en, _index, _stby, _lowpwr)		\
+	[_vreg]	= {							\
+		.reg		= _reg,					\
+		.en		= _en,					\
+		.index		= _index,				\
+		.stby		= _stby,				\
+		.lowpwr		= _lowpwr,				\
+		.n_voltages	= ARRAY_SIZE(_vreg##_table),		\
+		.voltage_table	= _vreg##_table,			\
+	}
+
+static struct pcap_regulator vreg_table[] = {
+	VREG_INFO(V1,    PCAP_REG_VREG1,   1,  2,  18, 0),
+	VREG_INFO(V2,    PCAP_REG_VREG1,   5,  6,  19, 22),
+	VREG_INFO(V3,    PCAP_REG_VREG1,   7,  8,  20, 23),
+	VREG_INFO(V4,    PCAP_REG_VREG1,   11, 12, 21, 24),
+	/* V5 STBY and LOWPWR are on PCAP_REG_VREG2 */
+	VREG_INFO(V5,    PCAP_REG_VREG1,   15, 16, 12, 19),
+
+	VREG_INFO(V6,    PCAP_REG_VREG2,   1,  2,  14, 20),
+	VREG_INFO(V7,    PCAP_REG_VREG2,   3,  4,  15, 21),
+	VREG_INFO(V8,    PCAP_REG_VREG2,   5,  6,  16, 22),
+	VREG_INFO(V9,    PCAP_REG_VREG2,   9,  10, 17, 23),
+	VREG_INFO(V10,   PCAP_REG_VREG2,   10, NA, 18, 24),
+
+	VREG_INFO(VAUX1, PCAP_REG_AUXVREG, 1,  2,  22, 23),
+	/* VAUX2 ... VSIM2 STBY and LOWPWR are on PCAP_REG_LOWPWR */
+	VREG_INFO(VAUX2, PCAP_REG_AUXVREG, 4,  5,  0,  1),
+	VREG_INFO(VAUX3, PCAP_REG_AUXVREG, 7,  8,  2,  3),
+	VREG_INFO(VAUX4, PCAP_REG_AUXVREG, 12, 13, 4,  5),
+	VREG_INFO(VSIM,  PCAP_REG_AUXVREG, 17, 18, NA, 6),
+	VREG_INFO(VSIM2, PCAP_REG_AUXVREG, 16, NA, NA, 7),
+	VREG_INFO(VVIB,  PCAP_REG_AUXVREG, 19, 20, NA, NA),
+
+	VREG_INFO(SW1,   PCAP_REG_SWCTRL,  1,  2,  NA, NA),
+	VREG_INFO(SW2,   PCAP_REG_SWCTRL,  6,  7,  NA, NA),
+	/* SW3 STBY is on PCAP_REG_AUXVREG */
+	VREG_INFO(SW3,   PCAP_REG_SWCTRL,  11, 12, 24, NA),
+
+	/* SWxS used to control SWx voltage on standby */
+/*	VREG_INFO(SW1S,  PCAP_REG_LOWPWR,  NA, 12, NA, NA),
+	VREG_INFO(SW2S,  PCAP_REG_LOWPWR,  NA, 20, NA, NA), */
+};
+
+static int pcap_regulator_set_voltage(struct regulator_dev *rdev,
+						int min_uV, int max_uV)
+{
+	struct pcap_regulator *vreg = &vreg_table[rdev_get_id(rdev)];
+	void *pcap = rdev_get_drvdata(rdev);
+	int uV;
+	u8 i;
+
+	/* the regulator doesn't support voltage switching */
+	if (vreg->n_voltages == 1)
+		return -EINVAL;
+
+	for (i = 0; i < vreg->n_voltages; i++) {
+		/* For V1 the first is not the best match */
+		if (i == 0 && rdev_get_id(rdev) == V1)
+			i = 1;
+		else if (i + 1 == vreg->n_voltages && rdev_get_id(rdev) == V1)
+			i = 0;
+
+		uV = vreg->voltage_table[i] * 1000;
+		if (min_uV <= uV && uV <= max_uV)
+			return ezx_pcap_set_bits(pcap, vreg->reg,
+					(vreg->n_voltages - 1) << vreg->index,
+					i << vreg->index);
+
+		if (i == 0 && rdev_get_id(rdev) == V1)
+			i = vreg->n_voltages - 1;
+	}
+
+	/* the requested voltage range is not supported by this regulator */
+	return -EINVAL;
+}
+
+static int pcap_regulator_get_voltage(struct regulator_dev *rdev)
+{
+	struct pcap_regulator *vreg = &vreg_table[rdev_get_id(rdev)];
+	void *pcap = rdev_get_drvdata(rdev);
+	u32 tmp;
+	int mV;
+
+	if (vreg->n_voltages == 1)
+		return vreg->voltage_table[0] * 1000;
+
+	ezx_pcap_read(pcap, vreg->reg, &tmp);
+	tmp = ((tmp >> vreg->index) & (vreg->n_voltages - 1));
+	mV = vreg->voltage_table[tmp];
+
+	return mV * 1000;
+}
+
+static int pcap_regulator_enable(struct regulator_dev *rdev)
+{
+	struct pcap_regulator *vreg = &vreg_table[rdev_get_id(rdev)];
+	void *pcap = rdev_get_drvdata(rdev);
+
+	if (vreg->en == NA)
+		return -EINVAL;
+
+	return ezx_pcap_set_bits(pcap, vreg->reg, 1 << vreg->en, 1 << vreg->en);
+}
+
+static int pcap_regulator_disable(struct regulator_dev *rdev)
+{
+	struct pcap_regulator *vreg = &vreg_table[rdev_get_id(rdev)];
+	void *pcap = rdev_get_drvdata(rdev);
+
+	if (vreg->en == NA)
+		return -EINVAL;
+
+	return ezx_pcap_set_bits(pcap, vreg->reg, 1 << vreg->en, 0);
+}
+
+static int pcap_regulator_is_enabled(struct regulator_dev *rdev)
+{
+	struct pcap_regulator *vreg = &vreg_table[rdev_get_id(rdev)];
+	void *pcap = rdev_get_drvdata(rdev);
+	u32 tmp;
+
+	if (vreg->en == NA)
+		return -EINVAL;
+
+	ezx_pcap_read(pcap, vreg->reg, &tmp);
+	return (tmp >> vreg->en) & 1;
+}
+
+static int pcap_regulator_list_voltage(struct regulator_dev *rdev,
+							unsigned int index)
+{
+	struct pcap_regulator *vreg = &vreg_table[rdev_get_id(rdev)];
+
+	return vreg->voltage_table[index] * 1000;
+}
+
+static struct regulator_ops pcap_regulator_ops = {
+	.list_voltage	= pcap_regulator_list_voltage,
+	.set_voltage	= pcap_regulator_set_voltage,
+	.get_voltage	= pcap_regulator_get_voltage,
+	.enable		= pcap_regulator_enable,
+	.disable	= pcap_regulator_disable,
+	.is_enabled	= pcap_regulator_is_enabled,
+};
+
+#define VREG(_vreg)						\
+	[_vreg]	= {						\
+		.name		= #_vreg,			\
+		.id		= _vreg,			\
+		.n_voltages	= ARRAY_SIZE(_vreg##_table),	\
+		.ops		= &pcap_regulator_ops,		\
+		.type		= REGULATOR_VOLTAGE,		\
+		.owner		= THIS_MODULE,			\
+	}
+
+static struct regulator_desc pcap_regulators[] = {
+	VREG(V1), VREG(V2), VREG(V3), VREG(V4), VREG(V5), VREG(V6), VREG(V7),
+	VREG(V8), VREG(V9), VREG(V10), VREG(VAUX1), VREG(VAUX2), VREG(VAUX3),
+	VREG(VAUX4), VREG(VSIM), VREG(VSIM2), VREG(VVIB), VREG(SW1), VREG(SW2),
+};
+
+static int __devinit pcap_regulator_probe(struct platform_device *pdev)
+{
+	struct regulator_dev *rdev;
+	void *pcap = platform_get_drvdata(pdev);
+
+	rdev = regulator_register(&pcap_regulators[pdev->id], &pdev->dev,
+				pdev->dev.platform_data, pcap);
+	if (IS_ERR(rdev))
+		return PTR_ERR(rdev);
+
+	platform_set_drvdata(pdev, rdev);
+
+	return 0;
+}
+
+static int __devexit pcap_regulator_remove(struct platform_device *pdev)
+{
+	struct regulator_dev *rdev = platform_get_drvdata(pdev);
+
+	regulator_unregister(rdev);
+
+	return 0;
+}
+
+static struct platform_driver pcap_regulator_driver = {
+	.driver = {
+		.name = "pcap-regulator",
+	},
+	.probe = pcap_regulator_probe,
+	.remove = __devexit_p(pcap_regulator_remove),
+};
+
+static int __init pcap_regulator_init(void)
+{
+	return platform_driver_register(&pcap_regulator_driver);
+}
+
+static void __exit pcap_regulator_exit(void)
+{
+	platform_driver_unregister(&pcap_regulator_driver);
+}
+
+module_init(pcap_regulator_init);
+module_exit(pcap_regulator_exit);
+
+MODULE_AUTHOR("Daniel Ribeiro <drwyrm@gmail.com>");
+MODULE_DESCRIPTION("PCAP2 Regulator Driver");
+MODULE_LICENSE("GPL");