Merge branch 'for-next' of git://git.o-hand.com/linux-mfd

* 'for-next' of git://git.o-hand.com/linux-mfd:
mfd: further unbork the ucb1400 ac97_bus dependencies
mfd: ucb1400 needs GPIO
mfd: ucb1400 sound driver uses/depends on AC97_BUS:
mfd: Don't use NO_IRQ in WM8350
mfd: update TMIO drivers to use the clock API
mfd: twl4030-core irq simplification
mfd: add base support for Dialog DA9030/DA9034 PMICs
mfd: TWL4030 core driver
mfd: support tmiofb cell on tc6393xb
mfd: add OHCI cell to tc6393xb
mfd: Fix htc-egpio compile warning
mfd: do tcb6393xb state restore on resume only if requested
mfd: provide and use setup hook for tc6393xb
mfd: update sm501 debugging/low information messages
mfd: reduce stack usage in mfd-core.c

arch/arm/mach-pxa/include/mach/tosa.h

···
  * TC6393XB GPIOs
  */
 #define TOSA_TC6393XB_GPIO_BASE		(NR_BUILTIN_GPIO + 2 * 12)
-#define TOSA_TC6393XB_GPIO(i)		(TOSA_TC6393XB_GPIO_BASE + (i))
-#define TOSA_TC6393XB_GPIO_BIT(gpio)	(1 << (gpio - TOSA_TC6393XB_GPIO_BASE))
 
 #define TOSA_GPIO_TG_ON			(TOSA_TC6393XB_GPIO_BASE + 0)
 #define TOSA_GPIO_L_MUTE		(TOSA_TC6393XB_GPIO_BASE + 1)

arch/arm/mach-pxa/tosa.c

···
 	.badblock_pattern = &tosa_tc6393xb_nand_bbt,
 };
 
-static struct tc6393xb_platform_data tosa_tc6393xb_setup = {
+static int tosa_tc6393xb_setup(struct platform_device *dev)
+{
+	int rc;
+
+	rc = gpio_request(TOSA_GPIO_CARD_VCC_ON, "CARD_VCC_ON");
+	if (rc)
+		goto err_req;
+
+	rc = gpio_direction_output(TOSA_GPIO_CARD_VCC_ON, 1);
+	if (rc)
+		goto err_dir;
+
+	return rc;
+
+err_dir:
+	gpio_free(TOSA_GPIO_CARD_VCC_ON);
+err_req:
+	return rc;
+}
+
+static void tosa_tc6393xb_teardown(struct platform_device *dev)
+{
+	gpio_free(TOSA_GPIO_CARD_VCC_ON);
+}
+
+static struct tc6393xb_platform_data tosa_tc6393xb_data = {
 	.scr_pll2cr	= 0x0cc1,
 	.scr_gper	= 0x3300,
-	.scr_gpo_dsr	=
-		TOSA_TC6393XB_GPIO_BIT(TOSA_GPIO_CARD_VCC_ON),
-	.scr_gpo_doecr	=
-		TOSA_TC6393XB_GPIO_BIT(TOSA_GPIO_CARD_VCC_ON),
 
 	.irq_base	= IRQ_BOARD_START,
 	.gpio_base	= TOSA_TC6393XB_GPIO_BASE,
+	.setup		= tosa_tc6393xb_setup,
+	.teardown	= tosa_tc6393xb_teardown,
 
 	.enable		= tosa_tc6393xb_enable,
 	.disable	= tosa_tc6393xb_disable,
···
 	.resume		= tosa_tc6393xb_resume,
 
 	.nand_data	= &tosa_tc6393xb_nand_config,
+
+	.resume_restore = 1,
 };
 
 
···
 	.name	= "tc6393xb",
 	.id	= -1,
 	.dev	= {
-		.platform_data	= &tosa_tc6393xb_setup,
+		.platform_data	= &tosa_tc6393xb_data,
 	},
 	.num_resources	= ARRAY_SIZE(tc6393xb_resources),
 	.resource	= tc6393xb_resources,

drivers/input/touchscreen/Kconfig

···
 
 config TOUCHSCREEN_UCB1400
 	tristate "Philips UCB1400 touchscreen"
-	select AC97_BUS
+	depends on AC97_BUS
 	depends on UCB1400_CORE
 	help
 	  This enables support for the Philips UCB1400 touchscreen interface.

drivers/mfd/Kconfig

···
 
 config UCB1400_CORE
 	tristate "Philips UCB1400 Core driver"
+	depends on AC97_BUS
+	depends on GPIOLIB
 	help
 	  This enables support for the Philips UCB1400 core functions.
 	  The UCB1400 is an AC97 audio codec.
 
 	  To compile this driver as a module, choose M here: the
 	  module will be called ucb1400_core.
+
+config TWL4030_CORE
+	bool "Texas Instruments TWL4030/TPS659x0 Support"
+	depends on I2C=y && GENERIC_HARDIRQS && (ARCH_OMAP2 || ARCH_OMAP3)
+	help
+	  Say yes here if you have TWL4030 family chip on your board.
+	  This core driver provides register access and IRQ handling
+	  facilities, and registers devices for the various functions
+	  so that function-specific drivers can bind to them.
+
+	  These multi-function chips are found on many OMAP2 and OMAP3
+	  boards, providing power management, RTC, GPIO, keypad, a
+	  high speed USB OTG transceiver, an audio codec (on most
+	  versions) and many other features.
 
 config MFD_TMIO
 	bool

drivers/mfd/Makefile

···
 obj-$(CONFIG_MFD_WM8350)	+= wm8350.o
 obj-$(CONFIG_MFD_WM8350_I2C)	+= wm8350-i2c.o
 
+obj-$(CONFIG_TWL4030_CORE)	+= twl4030-core.o
+
 obj-$(CONFIG_MFD_CORE)		+= mfd-core.o
 
 obj-$(CONFIG_MCP)		+= mcp-core.o

drivers/mfd/da903x.c

···
+/*
+ * Base driver for Dialog Semiconductor DA9030/DA9034
+ *
+ * Copyright (C) 2008 Compulab, Ltd.
+ * 	Mike Rapoport <[e-mail]>
+ *
+ * Copyright (C) 2006-2008 Marvell International Ltd.
+ * 	Eric Miao <[e-mail]>
+ *
+ * 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/module.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/i2c.h>
+#include <linux/mfd/da903x.h>
+
+#define DA9030_CHIP_ID		0x00
+#define DA9030_EVENT_A		0x01
+#define DA9030_EVENT_B		0x02
+#define DA9030_EVENT_C		0x03
+#define DA9030_STATUS		0x04
+#define DA9030_IRQ_MASK_A	0x05
+#define DA9030_IRQ_MASK_B	0x06
+#define DA9030_IRQ_MASK_C	0x07
+#define DA9030_SYS_CTRL_A	0x08
+#define DA9030_SYS_CTRL_B	0x09
+#define DA9030_FAULT_LOG	0x0a
+
+#define DA9034_CHIP_ID		0x00
+#define DA9034_EVENT_A		0x01
+#define DA9034_EVENT_B		0x02
+#define DA9034_EVENT_C		0x03
+#define DA9034_EVENT_D		0x04
+#define DA9034_STATUS_A		0x05
+#define DA9034_STATUS_B		0x06
+#define DA9034_IRQ_MASK_A	0x07
+#define DA9034_IRQ_MASK_B	0x08
+#define DA9034_IRQ_MASK_C	0x09
+#define DA9034_IRQ_MASK_D	0x0a
+#define DA9034_SYS_CTRL_A	0x0b
+#define DA9034_SYS_CTRL_B	0x0c
+#define DA9034_FAULT_LOG	0x0d
+
+struct da903x_chip;
+
+struct da903x_chip_ops {
+	int	(*init_chip)(struct da903x_chip *);
+	int	(*unmask_events)(struct da903x_chip *, unsigned int events);
+	int	(*mask_events)(struct da903x_chip *, unsigned int events);
+	int	(*read_events)(struct da903x_chip *, unsigned int *events);
+	int	(*read_status)(struct da903x_chip *, unsigned int *status);
+};
+
+struct da903x_chip {
+	struct i2c_client	*client;
+	struct device		*dev;
+	struct da903x_chip_ops	*ops;
+
+	int			type;
+	uint32_t		events_mask;
+
+	struct mutex		lock;
+	struct work_struct	irq_work;
+
+	struct blocking_notifier_head notifier_list;
+};
+
+static inline int __da903x_read(struct i2c_client *client,
+				int reg, uint8_t *val)
+{
+	int ret;
+
+	ret = i2c_smbus_read_byte_data(client, reg);
+	if (ret < 0) {
+		dev_err(&client->dev, "failed reading at 0x%02x\n", reg);
+		return ret;
+	}
+
+	*val = (uint8_t)ret;
+	return 0;
+}
+
+static inline int __da903x_reads(struct i2c_client *client, int reg,
+				 int len, uint8_t *val)
+{
+	int ret;
+
+	ret = i2c_smbus_read_i2c_block_data(client, reg, len, val);
+	if (ret < 0) {
+		dev_err(&client->dev, "failed reading from 0x%02x\n", reg);
+		return ret;
+	}
+	return 0;
+}
+
+static inline int __da903x_write(struct i2c_client *client,
+				 int reg, uint8_t val)
+{
+	int ret;
+
+	ret = i2c_smbus_write_byte_data(client, reg, val);
+	if (ret < 0) {
+		dev_err(&client->dev, "failed writing 0x%02x to 0x%02x\n",
+				val, reg);
+		return ret;
+	}
+	return 0;
+}
+
+static inline int __da903x_writes(struct i2c_client *client, int reg,
+				  int len, uint8_t *val)
+{
+	int ret;
+
+	ret = i2c_smbus_write_i2c_block_data(client, reg, len, val);
+	if (ret < 0) {
+		dev_err(&client->dev, "failed writings to 0x%02x\n", reg);
+		return ret;
+	}
+	return 0;
+}
+
+int da903x_register_notifier(struct device *dev, struct notifier_block *nb,
+				unsigned int events)
+{
+	struct da903x_chip *chip = dev_get_drvdata(dev);
+
+	chip->ops->unmask_events(chip, events);
+	return blocking_notifier_chain_register(&chip->notifier_list, nb);
+}
+EXPORT_SYMBOL_GPL(da903x_register_notifier);
+
+int da903x_unregister_notifier(struct device *dev, struct notifier_block *nb,
+				unsigned int events)
+{
+	struct da903x_chip *chip = dev_get_drvdata(dev);
+
+	chip->ops->mask_events(chip, events);
+	return blocking_notifier_chain_unregister(&chip->notifier_list, nb);
+}
+EXPORT_SYMBOL_GPL(da903x_unregister_notifier);
+
+int da903x_write(struct device *dev, int reg, uint8_t val)
+{
+	return __da903x_write(to_i2c_client(dev), reg, val);
+}
+EXPORT_SYMBOL_GPL(da903x_write);
+
+int da903x_read(struct device *dev, int reg, uint8_t *val)
+{
+	return __da903x_read(to_i2c_client(dev), reg, val);
+}
+EXPORT_SYMBOL_GPL(da903x_read);
+
+int da903x_set_bits(struct device *dev, int reg, uint8_t bit_mask)
+{
+	struct da903x_chip *chip = dev_get_drvdata(dev);
+	uint8_t reg_val;
+	int ret = 0;
+
+	mutex_lock(&chip->lock);
+
+	ret = __da903x_read(chip->client, reg, &reg_val);
+	if (ret)
+		goto out;
+
+	if ((reg_val & bit_mask) == 0) {
+		reg_val |= bit_mask;
+		ret = __da903x_write(chip->client, reg, reg_val);
+	}
+out:
+	mutex_unlock(&chip->lock);
+	return ret;
+}
+EXPORT_SYMBOL_GPL(da903x_set_bits);
+
+int da903x_clr_bits(struct device *dev, int reg, uint8_t bit_mask)
+{
+	struct da903x_chip *chip = dev_get_drvdata(dev);
+	uint8_t reg_val;
+	int ret = 0;
+
+	mutex_lock(&chip->lock);
+
+	ret = __da903x_read(chip->client, reg, &reg_val);
+	if (ret)
+		goto out;
+
+	if (reg_val & bit_mask) {
+		reg_val &= ~bit_mask;
+		ret = __da903x_write(chip->client, reg, reg_val);
+	}
+out:
+	mutex_unlock(&chip->lock);
+	return ret;
+}
+EXPORT_SYMBOL_GPL(da903x_clr_bits);
+
+int da903x_update(struct device *dev, int reg, uint8_t val, uint8_t mask)
+{
+	struct da903x_chip *chip = dev_get_drvdata(dev);
+	uint8_t reg_val;
+	int ret = 0;
+
+	mutex_lock(&chip->lock);
+
+	ret = __da903x_read(chip->client, reg, &reg_val);
+	if (ret)
+		goto out;
+
+	if ((reg_val & mask) != val) {
+		reg_val = (reg_val & ~mask) | val;
+		ret = __da903x_write(chip->client, reg, reg_val);
+	}
+out:
+	mutex_unlock(&chip->lock);
+	return ret;
+}
+EXPORT_SYMBOL_GPL(da903x_update);
+
+int da903x_query_status(struct device *dev, unsigned int sbits)
+{
+	struct da903x_chip *chip = dev_get_drvdata(dev);
+	unsigned int status = 0;
+
+	chip->ops->read_status(chip, &status);
+	return ((status & sbits) == sbits);
+}
+EXPORT_SYMBOL(da903x_query_status);
+
+static int __devinit da9030_init_chip(struct da903x_chip *chip)
+{
+	uint8_t chip_id;
+	int err;
+
+	err = __da903x_read(chip->client, DA9030_CHIP_ID, &chip_id);
+	if (err)
+		return err;
+
+	err = __da903x_write(chip->client, DA9030_SYS_CTRL_A, 0xE8);
+	if (err)
+		return err;
+
+	dev_info(chip->dev, "DA9030 (CHIP ID: 0x%02x) detected\n", chip_id);
+	return 0;
+}
+
+static int da9030_unmask_events(struct da903x_chip *chip, unsigned int events)
+{
+	uint8_t v[3];
+
+	chip->events_mask &= ~events;
+
+	v[0] = (chip->events_mask & 0xff);
+	v[1] = (chip->events_mask >> 8) & 0xff;
+	v[2] = (chip->events_mask >> 16) & 0xff;
+
+	return __da903x_writes(chip->client, DA9030_IRQ_MASK_A, 3, v);
+}
+
+static int da9030_mask_events(struct da903x_chip *chip, unsigned int events)
+{
+	uint8_t v[3];
+
+	chip->events_mask &= ~events;
+
+	v[0] = (chip->events_mask & 0xff);
+	v[1] = (chip->events_mask >> 8) & 0xff;
+	v[2] = (chip->events_mask >> 16) & 0xff;
+
+	return __da903x_writes(chip->client, DA9030_IRQ_MASK_A, 3, v);
+}
+
+static int da9030_read_events(struct da903x_chip *chip, unsigned int *events)
+{
+	uint8_t v[3] = {0, 0, 0};
+	int ret;
+
+	ret = __da903x_reads(chip->client, DA9030_EVENT_A, 3, v);
+	if (ret < 0)
+		return ret;
+
+	*events = (v[2] << 16) | (v[1] << 8) | v[0];
+	return 0;
+}
+
+static int da9030_read_status(struct da903x_chip *chip, unsigned int *status)
+{
+	return __da903x_read(chip->client, DA9030_STATUS, (uint8_t *)status);
+}
+
+static int da9034_init_chip(struct da903x_chip *chip)
+{
+	uint8_t chip_id;
+	int err;
+
+	err = __da903x_read(chip->client, DA9034_CHIP_ID, &chip_id);
+	if (err)
+		return err;
+
+	err = __da903x_write(chip->client, DA9034_SYS_CTRL_A, 0xE8);
+	if (err)
+		return err;
+
+	/* avoid SRAM power off during sleep*/
+	__da903x_write(chip->client, 0x10, 0x07);
+	__da903x_write(chip->client, 0x11, 0xff);
+	__da903x_write(chip->client, 0x12, 0xff);
+
+	/* Enable the ONKEY power down functionality */
+	__da903x_write(chip->client, DA9034_SYS_CTRL_B, 0x20);
+	__da903x_write(chip->client, DA9034_SYS_CTRL_A, 0x60);
+
+	/* workaround to make LEDs work */
+	__da903x_write(chip->client, 0x90, 0x01);
+	__da903x_write(chip->client, 0xB0, 0x08);
+
+	/* make ADTV1 and SDTV1 effective */
+	__da903x_write(chip->client, 0x20, 0x00);
+
+	dev_info(chip->dev, "DA9034 (CHIP ID: 0x%02x) detected\n", chip_id);
+	return 0;
+}
+
+static int da9034_unmask_events(struct da903x_chip *chip, unsigned int events)
+{
+	uint8_t v[4];
+
+	chip->events_mask &= ~events;
+
+	v[0] = (chip->events_mask & 0xff);
+	v[1] = (chip->events_mask >> 8) & 0xff;
+	v[2] = (chip->events_mask >> 16) & 0xff;
+	v[3] = (chip->events_mask >> 24) & 0xff;
+
+	return __da903x_writes(chip->client, DA9034_IRQ_MASK_A, 4, v);
+}
+
+static int da9034_mask_events(struct da903x_chip *chip, unsigned int events)
+{
+	uint8_t v[4];
+
+	chip->events_mask |= events;
+
+	v[0] = (chip->events_mask & 0xff);
+	v[1] = (chip->events_mask >> 8) & 0xff;
+	v[2] = (chip->events_mask >> 16) & 0xff;
+	v[3] = (chip->events_mask >> 24) & 0xff;
+
+	return __da903x_writes(chip->client, DA9034_IRQ_MASK_A, 4, v);
+}
+
+static int da9034_read_events(struct da903x_chip *chip, unsigned int *events)
+{
+	uint8_t v[4] = {0, 0, 0, 0};
+	int ret;
+
+	ret = __da903x_reads(chip->client, DA9034_EVENT_A, 4, v);
+	if (ret < 0)
+		return ret;
+
+	*events = (v[3] << 24) | (v[2] << 16) | (v[1] << 8) | v[0];
+	return 0;
+}
+
+static int da9034_read_status(struct da903x_chip *chip, unsigned int *status)
+{
+	uint8_t v[2] = {0, 0};
+	int ret = 0;
+
+	ret = __da903x_reads(chip->client, DA9034_STATUS_A, 2, v);
+	if (ret)
+		return ret;
+
+	*status = (v[1] << 8) | v[0];
+	return 0;
+}
+
+static void da903x_irq_work(struct work_struct *work)
+{
+	struct da903x_chip *chip =
+		container_of(work, struct da903x_chip, irq_work);
+	unsigned int events = 0;
+
+	while (1) {
+		if (chip->ops->read_events(chip, &events))
+			break;
+
+		events &= ~chip->events_mask;
+		if (events == 0)
+			break;
+
+		blocking_notifier_call_chain(
+				&chip->notifier_list, events, NULL);
+	}
+	enable_irq(chip->client->irq);
+}
+
+static int da903x_irq_handler(int irq, void *data)
+{
+	struct da903x_chip *chip = data;
+
+	disable_irq_nosync(irq);
+	(void)schedule_work(&chip->irq_work);
+
+	return IRQ_HANDLED;
+}
+
+static struct da903x_chip_ops da903x_ops[] = {
+	[0] = {
+		.init_chip	= da9030_init_chip,
+		.unmask_events	= da9030_unmask_events,
+		.mask_events	= da9030_mask_events,
+		.read_events	= da9030_read_events,
+		.read_status	= da9030_read_status,
+	},
+	[1] = {
+		.init_chip	= da9034_init_chip,
+		.unmask_events	= da9034_unmask_events,
+		.mask_events	= da9034_mask_events,
+		.read_events	= da9034_read_events,
+		.read_status	= da9034_read_status,
+	}
+};
+
+static const struct i2c_device_id da903x_id_table[] = {
+	{ "da9030", 0 },
+	{ "da9034", 1 },
+	{ },
+};
+MODULE_DEVICE_TABLE(i2c, da903x_id_table);
+
+static int __devexit __remove_subdev(struct device *dev, void *unused)
+{
+	platform_device_unregister(to_platform_device(dev));
+	return 0;
+}
+
+static int __devexit da903x_remove_subdevs(struct da903x_chip *chip)
+{
+	return device_for_each_child(chip->dev, NULL, __remove_subdev);
+}
+
+static int __devinit da903x_add_subdevs(struct da903x_chip *chip,
+					struct da903x_platform_data *pdata)
+{
+	struct da903x_subdev_info *subdev;
+	struct platform_device *pdev;
+	int i, ret = 0;
+
+	for (i = 0; i < pdata->num_subdevs; i++) {
+		subdev = &pdata->subdevs[i];
+
+		pdev = platform_device_alloc(subdev->name, subdev->id);
+
+		pdev->dev.parent = chip->dev;
+		pdev->dev.platform_data = subdev->platform_data;
+
+		ret = platform_device_add(pdev);
+		if (ret)
+			goto failed;
+	}
+	return 0;
+
+failed:
+	da903x_remove_subdevs(chip);
+	return ret;
+}
+
+static int __devinit da903x_probe(struct i2c_client *client,
+				  const struct i2c_device_id *id)
+{
+	struct da903x_platform_data *pdata = client->dev.platform_data;
+	struct da903x_chip *chip;
+	unsigned int tmp;
+	int ret;
+
+	chip = kzalloc(sizeof(struct da903x_chip), GFP_KERNEL);
+	if (chip == NULL)
+		return -ENOMEM;
+
+	chip->client = client;
+	chip->dev = &client->dev;
+	chip->ops = &da903x_ops[id->driver_data];
+
+	mutex_init(&chip->lock);
+	INIT_WORK(&chip->irq_work, da903x_irq_work);
+	BLOCKING_INIT_NOTIFIER_HEAD(&chip->notifier_list);
+
+	i2c_set_clientdata(client, chip);
+
+	ret = chip->ops->init_chip(chip);
+	if (ret)
+		goto out_free_chip;
+
+	/* mask and clear all IRQs */
+	chip->events_mask = 0xffffffff;
+	chip->ops->mask_events(chip, chip->events_mask);
+	chip->ops->read_events(chip, &tmp);
+
+	ret = request_irq(client->irq, da903x_irq_handler,
+			IRQF_DISABLED | IRQF_TRIGGER_FALLING,
+			"da903x", chip);
+	if (ret) {
+		dev_err(&client->dev, "failed to request irq %d\n",
+				client->irq);
+		goto out_free_chip;
+	}
+
+	ret = da903x_add_subdevs(chip, pdata);
+	if (ret)
+		goto out_free_irq;
+
+	return 0;
+
+out_free_irq:
+	free_irq(client->irq, chip);
+out_free_chip:
+	i2c_set_clientdata(client, NULL);
+	kfree(chip);
+	return ret;
+}
+
+static int __devexit da903x_remove(struct i2c_client *client)
+{
+	struct da903x_chip *chip = i2c_get_clientdata(client);
+
+	da903x_remove_subdevs(chip);
+	kfree(chip);
+	return 0;
+}
+
+static struct i2c_driver da903x_driver = {
+	.driver	= {
+		.name	= "da903x",
+		.owner	= THIS_MODULE,
+	},
+	.probe		= da903x_probe,
+	.remove		= __devexit_p(da903x_remove),
+	.id_table	= da903x_id_table,
+};
+
+static int __init da903x_init(void)
+{
+	return i2c_add_driver(&da903x_driver);
+}
+module_init(da903x_init);
+
+static void __exit da903x_exit(void)
+{
+	i2c_del_driver(&da903x_driver);
+}
+module_exit(da903x_exit);
+
+MODULE_DESCRIPTION("PMIC Driver for Dialog Semiconductor DA9034");
+MODULE_AUTHOR("Eric Miao <[e-mail]>"
+	      "Mike Rapoport <[e-mail]>");
+MODULE_LICENSE("GPL");

drivers/mfd/htc-egpio.c

···
 	ei->base_addr = ioremap_nocache(res->start, res->end - res->start);
 	if (!ei->base_addr)
 		goto fail;
-	pr_debug("EGPIO phys=%08x virt=%p\n", res->start, ei->base_addr);
+	pr_debug("EGPIO phys=%08x virt=%p\n", (u32)res->start, ei->base_addr);
 
 	if ((pdata->bus_width != 16) && (pdata->bus_width != 32))
 		goto fail;

drivers/mfd/mfd-core.c

···
 			  struct resource *mem_base,
 			  int irq_base)
 {
-	struct resource res[cell->num_resources];
+	struct resource *res;
 	struct platform_device *pdev;
 	int ret = -ENOMEM;
 	int r;
···
 	if (!pdev)
 		goto fail_alloc;
 
+	res = kzalloc(sizeof(*res) * cell->num_resources, GFP_KERNEL);
+	if (!res)
+		goto fail_device;
+
 	pdev->dev.parent = parent;
 
 	ret = platform_device_add_data(pdev,
 			cell->platform_data, cell->data_size);
 	if (ret)
-		goto fail_device;
+		goto fail_res;
 
-	memset(res, 0, sizeof(res));
 	for (r = 0; r < cell->num_resources; r++) {
 		res[r].name = cell->resources[r].name;
 		res[r].flags = cell->resources[r].flags;
···
 
 	ret = platform_device_add(pdev);
 	if (ret)
-		goto fail_device;
+		goto fail_res;
+
+	kfree(res);
 
 	return 0;
 
 /*	platform_device_del(pdev); */
+fail_res:
+	kfree(res);
 fail_device:
 	platform_device_put(pdev);
 fail_alloc:

drivers/mfd/sm501.c

···
 
 	sm501_sync_regs(sm);
 
-	dev_info(sm->dev, "gate %08lx, clock %08lx, mode %08lx\n",
-		 gate, clock, mode);
+	dev_dbg(sm->dev, "gate %08lx, clock %08lx, mode %08lx\n",
+		gate, clock, mode);
 
 	sm501_mdelay(sm, 16);
 	mutex_unlock(&sm->clock_lock);
···
 	int ret;
 
 	for (ptr = 0; ptr < pdev->num_resources; ptr++) {
-		printk("%s[%d] flags %08lx: %08llx..%08llx\n",
+		printk(KERN_DEBUG "%s[%d] flags %08lx: %08llx..%08llx\n",
 		       pdev->name, ptr,
 		       pdev->resource[ptr].flags,
 		       (unsigned long long)pdev->resource[ptr].start,

drivers/mfd/t7l66xb.c

···
 
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/err.h>
 #include <linux/io.h>
 #include <linux/irq.h>
+#include <linux/clk.h>
 #include <linux/platform_device.h>
 #include <linux/mfd/core.h>
 #include <linux/mfd/tmio.h>
···
 	spinlock_t		lock;
 
 	struct resource		rscr;
+	struct clk		*clk48m;
+	struct clk		*clk32k;
 	int			irq;
 	int			irq_base;
 };
···
 static int t7l66xb_mmc_enable(struct platform_device *mmc)
 {
 	struct platform_device *dev = to_platform_device(mmc->dev.parent);
-	struct t7l66xb_platform_data   *pdata = dev->dev.platform_data;
 	struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
 	unsigned long flags;
 	u8 dev_ctl;
 
-	if (pdata->enable_clk32k)
-		pdata->enable_clk32k(dev);
+	clk_enable(t7l66xb->clk32k);
 
 	spin_lock_irqsave(&t7l66xb->lock, flags);
 
···
 static int t7l66xb_mmc_disable(struct platform_device *mmc)
 {
 	struct platform_device *dev = to_platform_device(mmc->dev.parent);
-	struct t7l66xb_platform_data   *pdata = dev->dev.platform_data;
 	struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
 	unsigned long flags;
 	u8 dev_ctl;
···
 
 	spin_unlock_irqrestore(&t7l66xb->lock, flags);
 
-	if (pdata->disable_clk32k)
-		pdata->disable_clk32k(dev);
+	clk_disable(t7l66xb->clk32k);
 
 	return 0;
 }
···
 #ifdef CONFIG_PM
 static int t7l66xb_suspend(struct platform_device *dev, pm_message_t state)
 {
+	struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
 	struct t7l66xb_platform_data *pdata = dev->dev.platform_data;
 
 	if (pdata && pdata->suspend)
 		pdata->suspend(dev);
+	clk_disable(t7l66xb->clk48m);
 
 	return 0;
 }
 
 static int t7l66xb_resume(struct platform_device *dev)
 {
+	struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
 	struct t7l66xb_platform_data *pdata = dev->dev.platform_data;
 
+	clk_enable(t7l66xb->clk48m);
 	if (pdata && pdata->resume)
 		pdata->resume(dev);
 
···
 
 	t7l66xb->irq_base = pdata->irq_base;
 
+	t7l66xb->clk32k = clk_get(&dev->dev, "CLK_CK32K");
+	if (IS_ERR(t7l66xb->clk32k)) {
+		ret = PTR_ERR(t7l66xb->clk32k);
+		goto err_clk32k_get;
+	}
+
+	t7l66xb->clk48m = clk_get(&dev->dev, "CLK_CK48M");
+	if (IS_ERR(t7l66xb->clk48m)) {
+		ret = PTR_ERR(t7l66xb->clk48m);
+		clk_put(t7l66xb->clk32k);
+		goto err_clk48m_get;
+	}
+
 	rscr = &t7l66xb->rscr;
 	rscr->name = "t7l66xb-core";
 	rscr->start = iomem->start;
···
 		ret = -ENOMEM;
 		goto err_ioremap;
 	}
+
+	clk_enable(t7l66xb->clk48m);
 
 	if (pdata && pdata->enable)
 		pdata->enable(dev);
···
 	iounmap(t7l66xb->scr);
 err_ioremap:
 	release_resource(&t7l66xb->rscr);
-err_noirq:
 err_request_scr:
 	kfree(t7l66xb);
+	clk_put(t7l66xb->clk48m);
+err_clk48m_get:
+	clk_put(t7l66xb->clk32k);
+err_clk32k_get:
+err_noirq:
 	return ret;
 }
 
···
 	int ret;
 
 	ret = pdata->disable(dev);
-
+	clk_disable(t7l66xb->clk48m);
+	clk_put(t7l66xb->clk48m);
 	t7l66xb_detach_irq(dev);
 	iounmap(t7l66xb->scr);
 	release_resource(&t7l66xb->rscr);

drivers/mfd/tc6387xb.c

···
 
 #include <linux/module.h>
 #include <linux/platform_device.h>
+#include <linux/clk.h>
 #include <linux/err.h>
 #include <linux/mfd/core.h>
 #include <linux/mfd/tmio.h>
···
 #ifdef CONFIG_PM
 static int tc6387xb_suspend(struct platform_device *dev, pm_message_t state)
 {
-	struct tc6387xb_platform_data *pdata = platform_get_drvdata(dev);
+	struct clk *clk32k = platform_get_drvdata(dev);
+	struct tc6387xb_platform_data *pdata = dev->dev.platform_data;
 
 	if (pdata && pdata->suspend)
 		pdata->suspend(dev);
+	clk_disable(clk32k);
 
 	return 0;
 }
 
 static int tc6387xb_resume(struct platform_device *dev)
 {
-	struct tc6387xb_platform_data *pdata = platform_get_drvdata(dev);
+	struct clk *clk32k = platform_get_drvdata(dev);
+	struct tc6387xb_platform_data *pdata = dev->dev.platform_data;
 
+	clk_enable(clk32k);
 	if (pdata && pdata->resume)
 		pdata->resume(dev);
 
···
 static int tc6387xb_mmc_enable(struct platform_device *mmc)
 {
 	struct platform_device *dev      = to_platform_device(mmc->dev.parent);
-	struct tc6387xb_platform_data *tc6387xb = dev->dev.platform_data;
+	struct clk *clk32k = platform_get_drvdata(dev);
 
-	if (tc6387xb->enable_clk32k)
-		tc6387xb->enable_clk32k(dev);
+	clk_enable(clk32k);
 
 	return 0;
 }
···
 static int tc6387xb_mmc_disable(struct platform_device *mmc)
 {
 	struct platform_device *dev      = to_platform_device(mmc->dev.parent);
-	struct tc6387xb_platform_data *tc6387xb = dev->dev.platform_data;
+	struct clk *clk32k = platform_get_drvdata(dev);
 
-	if (tc6387xb->disable_clk32k)
-		tc6387xb->disable_clk32k(dev);
+	clk_disable(clk32k);
 
 	return 0;
 }
···
 
 static int tc6387xb_probe(struct platform_device *dev)
 {
-	struct tc6387xb_platform_data *data = platform_get_drvdata(dev);
+	struct tc6387xb_platform_data *pdata = dev->dev.platform_data;
 	struct resource *iomem;
+	struct clk *clk32k;
 	int irq, ret;
 
 	iomem = platform_get_resource(dev, IORESOURCE_MEM, 0);
 	if (!iomem) {
-		ret = -EINVAL;
-		goto err_resource;
+		return -EINVAL;
 	}
 
 	ret  = platform_get_irq(dev, 0);
···
 	else
 		goto err_resource;
 
-	if (data && data->enable)
-		data->enable(dev);
+	clk32k = clk_get(&dev->dev, "CLK_CK32K");
+	if (IS_ERR(clk32k)) {
+		ret = PTR_ERR(clk32k);
+		goto err_resource;
+	}
+	platform_set_drvdata(dev, clk32k);
+
+	if (pdata && pdata->enable)
+		pdata->enable(dev);
 
 	printk(KERN_INFO "Toshiba tc6387xb initialised\n");
 
···
 	if (!ret)
 		return 0;
 
+	clk_put(clk32k);
 err_resource:
 	return ret;
 }
 
 static int tc6387xb_remove(struct platform_device *dev)
 {
-	struct tc6387xb_platform_data *data = platform_get_drvdata(dev);
+	struct clk *clk32k = platform_get_drvdata(dev);
 
-	if (data && data->disable)
-		data->disable(dev);
-
-	/* FIXME - free the resources! */
+	mfd_remove_devices(&dev->dev);
+	clk_disable(clk32k);
+	clk_put(clk32k);
+	platform_set_drvdata(dev, NULL);
 
 	return 0;
 }

drivers/mfd/tc6393xb.c

···
 enum {
 	TC6393XB_CELL_NAND,
 	TC6393XB_CELL_MMC,
+	TC6393XB_CELL_OHCI,
+	TC6393XB_CELL_FB,
 };
 
 /*--------------------------------------------------------------------------*/
···
 	},
 };
 
+const static struct resource tc6393xb_ohci_resources[] = {
+	{
+		.start	= 0x3000,
+		.end	= 0x31ff,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.start	= 0x0300,
+		.end	= 0x03ff,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.start	= 0x010000,
+		.end	= 0x017fff,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.start	= 0x018000,
+		.end	= 0x01ffff,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.start	= IRQ_TC6393_OHCI,
+		.end	= IRQ_TC6393_OHCI,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct resource __devinitdata tc6393xb_fb_resources[] = {
+	{
+		.start	= 0x5000,
+		.end	= 0x51ff,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.start	= 0x0500,
+		.end	= 0x05ff,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.start	= 0x100000,
+		.end	= 0x1fffff,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.start	= IRQ_TC6393_FB,
+		.end	= IRQ_TC6393_FB,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static int tc6393xb_ohci_enable(struct platform_device *dev)
+{
+	struct tc6393xb *tc6393xb = dev_get_drvdata(dev->dev.parent);
+	unsigned long flags;
+	u16 ccr;
+	u8 fer;
+
+	spin_lock_irqsave(&tc6393xb->lock, flags);
+
+	ccr = tmio_ioread16(tc6393xb->scr + SCR_CCR);
+	ccr |= SCR_CCR_USBCK;
+	tmio_iowrite16(ccr, tc6393xb->scr + SCR_CCR);
+
+	fer = tmio_ioread8(tc6393xb->scr + SCR_FER);
+	fer |= SCR_FER_USBEN;
+	tmio_iowrite8(fer, tc6393xb->scr + SCR_FER);
+
+	spin_unlock_irqrestore(&tc6393xb->lock, flags);
+
+	return 0;
+}
+
+static int tc6393xb_ohci_disable(struct platform_device *dev)
+{
+	struct tc6393xb *tc6393xb = dev_get_drvdata(dev->dev.parent);
+	unsigned long flags;
+	u16 ccr;
+	u8 fer;
+
+	spin_lock_irqsave(&tc6393xb->lock, flags);
+
+	fer = tmio_ioread8(tc6393xb->scr + SCR_FER);
+	fer &= ~SCR_FER_USBEN;
+	tmio_iowrite8(fer, tc6393xb->scr + SCR_FER);
+
+	ccr = tmio_ioread16(tc6393xb->scr + SCR_CCR);
+	ccr &= ~SCR_CCR_USBCK;
+	tmio_iowrite16(ccr, tc6393xb->scr + SCR_CCR);
+
+	spin_unlock_irqrestore(&tc6393xb->lock, flags);
+
+	return 0;
+}
+
+static int tc6393xb_fb_enable(struct platform_device *dev)
+{
+	struct tc6393xb *tc6393xb = dev_get_drvdata(dev->dev.parent);
+	unsigned long flags;
+	u16 ccr;
+
+	spin_lock_irqsave(&tc6393xb->lock, flags);
+
+	ccr = tmio_ioread16(tc6393xb->scr + SCR_CCR);
+	ccr &= ~SCR_CCR_MCLK_MASK;
+	ccr |= SCR_CCR_MCLK_48;
+	tmio_iowrite16(ccr, tc6393xb->scr + SCR_CCR);
+
+	spin_unlock_irqrestore(&tc6393xb->lock, flags);
+
+	return 0;
+}
+
+static int tc6393xb_fb_disable(struct platform_device *dev)
+{
+	struct tc6393xb *tc6393xb = dev_get_drvdata(dev->dev.parent);
+	unsigned long flags;
+	u16 ccr;
+
+	spin_lock_irqsave(&tc6393xb->lock, flags);
+
+	ccr = tmio_ioread16(tc6393xb->scr + SCR_CCR);
+	ccr &= ~SCR_CCR_MCLK_MASK;
+	ccr |= SCR_CCR_MCLK_OFF;
+	tmio_iowrite16(ccr, tc6393xb->scr + SCR_CCR);
+
+	spin_unlock_irqrestore(&tc6393xb->lock, flags);
+
+	return 0;
+}
+
+int tc6393xb_lcd_set_power(struct platform_device *fb, bool on)
+{
+	struct platform_device *dev = to_platform_device(fb->dev.parent);
+	struct tc6393xb *tc6393xb = platform_get_drvdata(dev);
+	u8 fer;
+	unsigned long flags;
+
+	spin_lock_irqsave(&tc6393xb->lock, flags);
+
+	fer = ioread8(tc6393xb->scr + SCR_FER);
+	if (on)
+		fer |= SCR_FER_SLCDEN;
+	else
+		fer &= ~SCR_FER_SLCDEN;
+	iowrite8(fer, tc6393xb->scr + SCR_FER);
+
+	spin_unlock_irqrestore(&tc6393xb->lock, flags);
+
+	return 0;
+}
+EXPORT_SYMBOL(tc6393xb_lcd_set_power);
+
+int tc6393xb_lcd_mode(struct platform_device *fb,
+					const struct fb_videomode *mode) {
+	struct platform_device *dev = to_platform_device(fb->dev.parent);
+	struct tc6393xb *tc6393xb = platform_get_drvdata(dev);
+	unsigned long flags;
+
+	spin_lock_irqsave(&tc6393xb->lock, flags);
+
+	iowrite16(mode->pixclock, tc6393xb->scr + SCR_PLL1CR + 0);
+	iowrite16(mode->pixclock >> 16, tc6393xb->scr + SCR_PLL1CR + 2);
+
+	spin_unlock_irqrestore(&tc6393xb->lock, flags);
+
+	return 0;
+}
+EXPORT_SYMBOL(tc6393xb_lcd_mode);
+
 static struct mfd_cell __devinitdata tc6393xb_cells[] = {
 	[TC6393XB_CELL_NAND] = {
 		.name = "tmio-nand",
···
 		.name = "tmio-mmc",
 		.num_resources = ARRAY_SIZE(tc6393xb_mmc_resources),
 		.resources = tc6393xb_mmc_resources,
+	},
+	[TC6393XB_CELL_OHCI] = {
+		.name = "tmio-ohci",
+		.num_resources = ARRAY_SIZE(tc6393xb_ohci_resources),
+		.resources = tc6393xb_ohci_resources,
+		.enable = tc6393xb_ohci_enable,
+		.suspend = tc6393xb_ohci_disable,
+		.resume = tc6393xb_ohci_enable,
+		.disable = tc6393xb_ohci_disable,
+	},
+	[TC6393XB_CELL_FB] = {
+		.name = "tmio-fb",
+		.num_resources = ARRAY_SIZE(tc6393xb_fb_resources),
+		.resources = tc6393xb_fb_resources,
+		.enable = tc6393xb_fb_enable,
+		.suspend = tc6393xb_fb_disable,
+		.resume = tc6393xb_fb_enable,
+		.disable = tc6393xb_fb_disable,
 	},
 };
 
···
 
 /*--------------------------------------------------------------------------*/
 
-static int tc6393xb_hw_init(struct platform_device *dev)
-{
-	struct tc6393xb_platform_data *tcpd = dev->dev.platform_data;
-	struct tc6393xb *tc6393xb = platform_get_drvdata(dev);
-	int i;
-
-	iowrite8(tc6393xb->suspend_state.fer,	tc6393xb->scr + SCR_FER);
-	iowrite16(tcpd->scr_pll2cr,		tc6393xb->scr + SCR_PLL2CR);
-	iowrite16(tc6393xb->suspend_state.ccr,	tc6393xb->scr + SCR_CCR);
-	iowrite16(SCR_MCR_RDY_OPENDRAIN | SCR_MCR_RDY_UNK | SCR_MCR_RDY_EN |
-		  SCR_MCR_INT_OPENDRAIN | SCR_MCR_INT_UNK | SCR_MCR_INT_EN |
-		  BIT(15),			tc6393xb->scr + SCR_MCR);
-	iowrite16(tcpd->scr_gper,		tc6393xb->scr + SCR_GPER);
-	iowrite8(0,				tc6393xb->scr + SCR_IRR);
-	iowrite8(0xbf,				tc6393xb->scr + SCR_IMR);
-
-	for (i = 0; i < 3; i++) {
-		iowrite8(tc6393xb->suspend_state.gpo_dsr[i],
-					tc6393xb->scr + SCR_GPO_DSR(i));
-		iowrite8(tc6393xb->suspend_state.gpo_doecr[i],
-					tc6393xb->scr + SCR_GPO_DOECR(i));
-		iowrite8(tc6393xb->suspend_state.gpi_bcr[i],
-					tc6393xb->scr + SCR_GPI_BCR(i));
-	}
-
-	return 0;
-}
-
 static int __devinit tc6393xb_probe(struct platform_device *dev)
 {
 	struct tc6393xb_platform_data *tcpd = dev->dev.platform_data;
 	struct tc6393xb *tc6393xb;
 	struct resource *iomem, *rscr;
 	int ret, temp;
-	int i;
 
 	iomem = platform_get_resource(dev, IORESOURCE_MEM, 0);
 	if (!iomem)
···
 	if (ret)
 		goto err_enable;
 
-	tc6393xb->suspend_state.fer = 0;
-
-	for (i = 0; i < 3; i++) {
-		tc6393xb->suspend_state.gpo_dsr[i] =
-			(tcpd->scr_gpo_dsr >> (8 * i)) & 0xff;
-		tc6393xb->suspend_state.gpo_doecr[i] =
-			(tcpd->scr_gpo_doecr >> (8 * i)) & 0xff;
-	}
-
-	tc6393xb->suspend_state.ccr = SCR_CCR_UNK1 |
-					SCR_CCR_HCLK_48;
-
-	ret = tc6393xb_hw_init(dev);
-	if (ret)
-		goto err_hw_init;
+	iowrite8(0,				tc6393xb->scr + SCR_FER);
+	iowrite16(tcpd->scr_pll2cr,		tc6393xb->scr + SCR_PLL2CR);
+	iowrite16(SCR_CCR_UNK1 | SCR_CCR_HCLK_48,
+						tc6393xb->scr + SCR_CCR);
+	iowrite16(SCR_MCR_RDY_OPENDRAIN | SCR_MCR_RDY_UNK | SCR_MCR_RDY_EN |
+		  SCR_MCR_INT_OPENDRAIN | SCR_MCR_INT_UNK | SCR_MCR_INT_EN |
+		  BIT(15),			tc6393xb->scr + SCR_MCR);
+	iowrite16(tcpd->scr_gper,		tc6393xb->scr + SCR_GPER);
+	iowrite8(0,				tc6393xb->scr + SCR_IRR);
+	iowrite8(0xbf,				tc6393xb->scr + SCR_IMR);
 
 	printk(KERN_INFO "Toshiba tc6393xb revision %d at 0x%08lx, irq %d\n",
 			tmio_ioread8(tc6393xb->scr + SCR_REVID),
···
 
 	tc6393xb_attach_irq(dev);
 
+	if (tcpd->setup) {
+		ret = tcpd->setup(dev);
+		if (ret)
+			goto err_setup;
+	}
+
 	tc6393xb_cells[TC6393XB_CELL_NAND].driver_data = tcpd->nand_data;
 	tc6393xb_cells[TC6393XB_CELL_NAND].platform_data =
 		&tc6393xb_cells[TC6393XB_CELL_NAND];
 	tc6393xb_cells[TC6393XB_CELL_NAND].data_size =
 		sizeof(tc6393xb_cells[TC6393XB_CELL_NAND]);
+
 	tc6393xb_cells[TC6393XB_CELL_MMC].platform_data =
 		&tc6393xb_cells[TC6393XB_CELL_MMC];
 	tc6393xb_cells[TC6393XB_CELL_MMC].data_size =
 		sizeof(tc6393xb_cells[TC6393XB_CELL_MMC]);
 
+	tc6393xb_cells[TC6393XB_CELL_OHCI].platform_data =
+		&tc6393xb_cells[TC6393XB_CELL_OHCI];
+	tc6393xb_cells[TC6393XB_CELL_OHCI].data_size =
+		sizeof(tc6393xb_cells[TC6393XB_CELL_OHCI]);
+
+	tc6393xb_cells[TC6393XB_CELL_FB].driver_data = tcpd->fb_data;
+	tc6393xb_cells[TC6393XB_CELL_FB].platform_data =
+		&tc6393xb_cells[TC6393XB_CELL_FB];
+	tc6393xb_cells[TC6393XB_CELL_FB].data_size =
+		sizeof(tc6393xb_cells[TC6393XB_CELL_FB]);
 
 	ret = mfd_add_devices(&dev->dev, dev->id,
 			tc6393xb_cells, ARRAY_SIZE(tc6393xb_cells),
···
 	if (!ret)
 		return 0;
 
+	if (tcpd->teardown)
+		tcpd->teardown(dev);
+
+err_setup:
 	tc6393xb_detach_irq(dev);
 
 err_gpio_add:
 	if (tc6393xb->gpio.base != -1)
 		temp = gpiochip_remove(&tc6393xb->gpio);
-err_hw_init:
 	tcpd->disable(dev);
 err_clk_enable:
 	clk_disable(tc6393xb->clk);
···
 	int ret;
 
 	mfd_remove_devices(&dev->dev);
+
+	if (tcpd->teardown)
+		tcpd->teardown(dev);
+
 	tc6393xb_detach_irq(dev);
 
 	if (tc6393xb->gpio.base != -1) {
···
 	struct tc6393xb_platform_data *tcpd = dev->dev.platform_data;
 	struct tc6393xb *tc6393xb = platform_get_drvdata(dev);
 	int ret;
+	int i;
 
 	clk_enable(tc6393xb->clk);
 
 	ret = tcpd->resume(dev);
-
 	if (ret)
 		return ret;
 
-	return tc6393xb_hw_init(dev);
+	if (!tcpd->resume_restore)
+		return 0;
+
+	iowrite8(tc6393xb->suspend_state.fer,	tc6393xb->scr + SCR_FER);
+	iowrite16(tcpd->scr_pll2cr,		tc6393xb->scr + SCR_PLL2CR);
+	iowrite16(tc6393xb->suspend_state.ccr,	tc6393xb->scr + SCR_CCR);
+	iowrite16(SCR_MCR_RDY_OPENDRAIN | SCR_MCR_RDY_UNK | SCR_MCR_RDY_EN |
+		  SCR_MCR_INT_OPENDRAIN | SCR_MCR_INT_UNK | SCR_MCR_INT_EN |
+		  BIT(15),			tc6393xb->scr + SCR_MCR);
+	iowrite16(tcpd->scr_gper,		tc6393xb->scr + SCR_GPER);
+	iowrite8(0,				tc6393xb->scr + SCR_IRR);
+	iowrite8(0xbf,				tc6393xb->scr + SCR_IMR);
+
+	for (i = 0; i < 3; i++) {
+		iowrite8(tc6393xb->suspend_state.gpo_dsr[i],
+					tc6393xb->scr + SCR_GPO_DSR(i));
+		iowrite8(tc6393xb->suspend_state.gpo_doecr[i],
+					tc6393xb->scr + SCR_GPO_DOECR(i));
+		iowrite8(tc6393xb->suspend_state.gpi_bcr[i],
+					tc6393xb->scr + SCR_GPI_BCR(i));
+	}
+
+	return 0;
 }
 #else
 #define tc6393xb_suspend NULL

drivers/mfd/twl4030-core.c

···
+/*
+ * twl4030_core.c - driver for TWL4030/TPS659x0 PM and audio CODEC devices
+ *
+ * Copyright (C) 2005-2006 Texas Instruments, Inc.
+ *
+ * Modifications to defer interrupt handling to a kernel thread:
+ * Copyright (C) 2006 MontaVista Software, Inc.
+ *
+ * Based on tlv320aic23.c:
+ * Copyright (c) by Kai Svahn <[e-mail]>
+ *
+ * Code cleanup and modifications to IRQ handler.
+ * by syed khasim <[e-mail]>
+ *
+ * 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.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ */
+
+#include <linux/kernel_stat.h>
+#include <linux/init.h>
+#include <linux/mutex.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/random.h>
+#include <linux/kthread.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+
+#include <linux/i2c.h>
+#include <linux/i2c/twl4030.h>
+
+
+/*
+ * The TWL4030 "Triton 2" is one of a family of a multi-function "Power
+ * Management and System Companion Device" chips originally designed for
+ * use in OMAP2 and OMAP 3 based systems.  Its control interfaces use I2C,
+ * often at around 3 Mbit/sec, including for interrupt handling.
+ *
+ * This driver core provides genirq support for the interrupts emitted,
+ * by the various modules, and exports register access primitives.
+ *
+ * FIXME this driver currently requires use of the first interrupt line
+ * (and associated registers).
+ */
+
+#define DRIVER_NAME			"twl4030"
+
+#if defined(CONFIG_TWL4030_BCI_BATTERY) || \
+	defined(CONFIG_TWL4030_BCI_BATTERY_MODULE)
+#define twl_has_bci()		true
+#else
+#define twl_has_bci()		false
+#endif
+
+#if defined(CONFIG_KEYBOARD_TWL4030) || defined(CONFIG_KEYBOARD_TWL4030_MODULE)
+#define twl_has_keypad()	true
+#else
+#define twl_has_keypad()	false
+#endif
+
+#if defined(CONFIG_GPIO_TWL4030) || defined(CONFIG_GPIO_TWL4030_MODULE)
+#define twl_has_gpio()	true
+#else
+#define twl_has_gpio()	false
+#endif
+
+#if defined(CONFIG_TWL4030_MADC) || defined(CONFIG_TWL4030_MADC_MODULE)
+#define twl_has_madc()	true
+#else
+#define twl_has_madc()	false
+#endif
+
+#if defined(CONFIG_RTC_DRV_TWL4030) || defined(CONFIG_RTC_DRV_TWL4030_MODULE)
+#define twl_has_rtc()	true
+#else
+#define twl_has_rtc()	false
+#endif
+
+#if defined(CONFIG_TWL4030_USB) || defined(CONFIG_TWL4030_USB_MODULE)
+#define twl_has_usb()	true
+#else
+#define twl_has_usb()	false
+#endif
+
+static inline void activate_irq(int irq)
+{
+#ifdef CONFIG_ARM
+	/* ARM requires an extra step to clear IRQ_NOREQUEST, which it
+	 * sets on behalf of every irq_chip.  Also sets IRQ_NOPROBE.
+	 */
+	set_irq_flags(irq, IRQF_VALID);
+#else
+	/* same effect on other architectures */
+	set_irq_noprobe(irq);
+#endif
+}
+
+/* Primary Interrupt Handler on TWL4030 Registers */
+
+/* Register Definitions */
+
+#define REG_PIH_ISR_P1			(0x1)
+#define REG_PIH_ISR_P2			(0x2)
+#define REG_PIH_SIR			(0x3)
+
+/* Triton Core internal information (BEGIN) */
+
+/* Last - for index max*/
+#define TWL4030_MODULE_LAST		TWL4030_MODULE_SECURED_REG
+
+#define TWL4030_NUM_SLAVES		4
+
+
+/* Base Address defns for twl4030_map[] */
+
+/* subchip/slave 0 - USB ID */
+#define TWL4030_BASEADD_USB		0x0000
+
+/* subchip/slave 1 - AUD ID */
+#define TWL4030_BASEADD_AUDIO_VOICE	0x0000
+#define TWL4030_BASEADD_GPIO		0x0098
+#define TWL4030_BASEADD_INTBR		0x0085
+#define TWL4030_BASEADD_PIH		0x0080
+#define TWL4030_BASEADD_TEST		0x004C
+
+/* subchip/slave 2 - AUX ID */
+#define TWL4030_BASEADD_INTERRUPTS	0x00B9
+#define TWL4030_BASEADD_LED		0x00EE
+#define TWL4030_BASEADD_MADC		0x0000
+#define TWL4030_BASEADD_MAIN_CHARGE	0x0074
+#define TWL4030_BASEADD_PRECHARGE	0x00AA
+#define TWL4030_BASEADD_PWM0		0x00F8
+#define TWL4030_BASEADD_PWM1		0x00FB
+#define TWL4030_BASEADD_PWMA		0x00EF
+#define TWL4030_BASEADD_PWMB		0x00F1
+#define TWL4030_BASEADD_KEYPAD		0x00D2
+
+/* subchip/slave 3 - POWER ID */
+#define TWL4030_BASEADD_BACKUP		0x0014
+#define TWL4030_BASEADD_INT		0x002E
+#define TWL4030_BASEADD_PM_MASTER	0x0036
+#define TWL4030_BASEADD_PM_RECEIVER	0x005B
+#define TWL4030_BASEADD_RTC		0x001C
+#define TWL4030_BASEADD_SECURED_REG	0x0000
+
+/* Triton Core internal information (END) */
+
+
+/* Few power values */
+#define R_CFG_BOOT			0x05
+#define R_PROTECT_KEY			0x0E
+
+/* access control values for R_PROTECT_KEY */
+#define KEY_UNLOCK1			0xce
+#define KEY_UNLOCK2			0xec
+#define KEY_LOCK			0x00
+
+/* some fields in R_CFG_BOOT */
+#define HFCLK_FREQ_19p2_MHZ		(1 << 0)
+#define HFCLK_FREQ_26_MHZ		(2 << 0)
+#define HFCLK_FREQ_38p4_MHZ		(3 << 0)
+#define HIGH_PERF_SQ			(1 << 3)
+
+
+/*----------------------------------------------------------------------*/
+
+/**
+ * struct twl4030_mod_iregs - TWL module IMR/ISR regs to mask/clear at init
+ * @mod_no: TWL4030 module number (e.g., TWL4030_MODULE_GPIO)
+ * @sih_ctrl: address of module SIH_CTRL register
+ * @reg_cnt: number of IMR/ISR regs
+ * @imrs: pointer to array of TWL module interrupt mask register indices
+ * @isrs: pointer to array of TWL module interrupt status register indices
+ *
+ * Ties together TWL4030 modules and lists of IMR/ISR registers to mask/clear
+ * during twl_init_irq().
+ */
+struct twl4030_mod_iregs {
+	const u8 mod_no;
+	const u8 sih_ctrl;
+	const u8 reg_cnt;
+	const u8 *imrs;
+	const u8 *isrs;
+};
+
+/* TWL4030 INT module interrupt mask registers */
+static const u8 __initconst twl4030_int_imr_regs[] = {
+	TWL4030_INT_PWR_IMR1,
+	TWL4030_INT_PWR_IMR2,
+};
+
+/* TWL4030 INT module interrupt status registers */
+static const u8 __initconst twl4030_int_isr_regs[] = {
+	TWL4030_INT_PWR_ISR1,
+	TWL4030_INT_PWR_ISR2,
+};
+
+/* TWL4030 INTERRUPTS module interrupt mask registers */
+static const u8 __initconst twl4030_interrupts_imr_regs[] = {
+	TWL4030_INTERRUPTS_BCIIMR1A,
+	TWL4030_INTERRUPTS_BCIIMR1B,
+	TWL4030_INTERRUPTS_BCIIMR2A,
+	TWL4030_INTERRUPTS_BCIIMR2B,
+};
+
+/* TWL4030 INTERRUPTS module interrupt status registers */
+static const u8 __initconst twl4030_interrupts_isr_regs[] = {
+	TWL4030_INTERRUPTS_BCIISR1A,
+	TWL4030_INTERRUPTS_BCIISR1B,
+	TWL4030_INTERRUPTS_BCIISR2A,
+	TWL4030_INTERRUPTS_BCIISR2B,
+};
+
+/* TWL4030 MADC module interrupt mask registers */
+static const u8 __initconst twl4030_madc_imr_regs[] = {
+	TWL4030_MADC_IMR1,
+	TWL4030_MADC_IMR2,
+};
+
+/* TWL4030 MADC module interrupt status registers */
+static const u8 __initconst twl4030_madc_isr_regs[] = {
+	TWL4030_MADC_ISR1,
+	TWL4030_MADC_ISR2,
+};
+
+/* TWL4030 keypad module interrupt mask registers */
+static const u8 __initconst twl4030_keypad_imr_regs[] = {
+	TWL4030_KEYPAD_KEYP_IMR1,
+	TWL4030_KEYPAD_KEYP_IMR2,
+};
+
+/* TWL4030 keypad module interrupt status registers */
+static const u8 __initconst twl4030_keypad_isr_regs[] = {
+	TWL4030_KEYPAD_KEYP_ISR1,
+	TWL4030_KEYPAD_KEYP_ISR2,
+};
+
+/* TWL4030 GPIO module interrupt mask registers */
+static const u8 __initconst twl4030_gpio_imr_regs[] = {
+	REG_GPIO_IMR1A,
+	REG_GPIO_IMR1B,
+	REG_GPIO_IMR2A,
+	REG_GPIO_IMR2B,
+	REG_GPIO_IMR3A,
+	REG_GPIO_IMR3B,
+};
+
+/* TWL4030 GPIO module interrupt status registers */
+static const u8 __initconst twl4030_gpio_isr_regs[] = {
+	REG_GPIO_ISR1A,
+	REG_GPIO_ISR1B,
+	REG_GPIO_ISR2A,
+	REG_GPIO_ISR2B,
+	REG_GPIO_ISR3A,
+	REG_GPIO_ISR3B,
+};
+
+/* TWL4030 modules that have IMR/ISR registers that must be masked/cleared */
+static const struct twl4030_mod_iregs __initconst twl4030_mod_regs[] = {
+	{
+		.mod_no	  = TWL4030_MODULE_INT,
+		.sih_ctrl = TWL4030_INT_PWR_SIH_CTRL,
+		.reg_cnt  = ARRAY_SIZE(twl4030_int_imr_regs),
+		.imrs	  = twl4030_int_imr_regs,
+		.isrs	  = twl4030_int_isr_regs,
+	},
+	{
+		.mod_no	  = TWL4030_MODULE_INTERRUPTS,
+		.sih_ctrl = TWL4030_INTERRUPTS_BCISIHCTRL,
+		.reg_cnt  = ARRAY_SIZE(twl4030_interrupts_imr_regs),
+		.imrs	  = twl4030_interrupts_imr_regs,
+		.isrs	  = twl4030_interrupts_isr_regs,
+	},
+	{
+		.mod_no	  = TWL4030_MODULE_MADC,
+		.sih_ctrl = TWL4030_MADC_SIH_CTRL,
+		.reg_cnt  = ARRAY_SIZE(twl4030_madc_imr_regs),
+		.imrs	  = twl4030_madc_imr_regs,
+		.isrs	  = twl4030_madc_isr_regs,
+	},
+	{
+		.mod_no	  = TWL4030_MODULE_KEYPAD,
+		.sih_ctrl = TWL4030_KEYPAD_KEYP_SIH_CTRL,
+		.reg_cnt  = ARRAY_SIZE(twl4030_keypad_imr_regs),
+		.imrs	  = twl4030_keypad_imr_regs,
+		.isrs	  = twl4030_keypad_isr_regs,
+	},
+	{
+		.mod_no	  = TWL4030_MODULE_GPIO,
+		.sih_ctrl = REG_GPIO_SIH_CTRL,
+		.reg_cnt  = ARRAY_SIZE(twl4030_gpio_imr_regs),
+		.imrs	  = twl4030_gpio_imr_regs,
+		.isrs	  = twl4030_gpio_isr_regs,
+	},
+};
+
+/*----------------------------------------------------------------*/
+
+/* is driver active, bound to a chip? */
+static bool inuse;
+
+/* Structure for each TWL4030 Slave */
+struct twl4030_client {
+	struct i2c_client *client;
+	u8 address;
+
+	/* max numb of i2c_msg required is for read =2 */
+	struct i2c_msg xfer_msg[2];
+
+	/* To lock access to xfer_msg */
+	struct mutex xfer_lock;
+};
+
+static struct twl4030_client twl4030_modules[TWL4030_NUM_SLAVES];
+
+
+/* mapping the module id to slave id and base address */
+struct twl4030mapping {
+	unsigned char sid;	/* Slave ID */
+	unsigned char base;	/* base address */
+};
+
+static struct twl4030mapping twl4030_map[TWL4030_MODULE_LAST + 1] = {
+	/*
+	 * NOTE:  don't change this table without updating the
+	 * <linux/i2c/twl4030.h> defines for TWL4030_MODULE_*
+	 * so they continue to match the order in this table.
+	 */
+
+	{ 0, TWL4030_BASEADD_USB },
+
+	{ 1, TWL4030_BASEADD_AUDIO_VOICE },
+	{ 1, TWL4030_BASEADD_GPIO },
+	{ 1, TWL4030_BASEADD_INTBR },
+	{ 1, TWL4030_BASEADD_PIH },
+	{ 1, TWL4030_BASEADD_TEST },
+
+	{ 2, TWL4030_BASEADD_KEYPAD },
+	{ 2, TWL4030_BASEADD_MADC },
+	{ 2, TWL4030_BASEADD_INTERRUPTS },
+	{ 2, TWL4030_BASEADD_LED },
+	{ 2, TWL4030_BASEADD_MAIN_CHARGE },
+	{ 2, TWL4030_BASEADD_PRECHARGE },
+	{ 2, TWL4030_BASEADD_PWM0 },
+	{ 2, TWL4030_BASEADD_PWM1 },
+	{ 2, TWL4030_BASEADD_PWMA },
+	{ 2, TWL4030_BASEADD_PWMB },
+
+	{ 3, TWL4030_BASEADD_BACKUP },
+	{ 3, TWL4030_BASEADD_INT },
+	{ 3, TWL4030_BASEADD_PM_MASTER },
+	{ 3, TWL4030_BASEADD_PM_RECEIVER },
+	{ 3, TWL4030_BASEADD_RTC },
+	{ 3, TWL4030_BASEADD_SECURED_REG },
+};
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * TWL4030 doesn't have PIH mask, hence dummy function for mask
+ * and unmask of the (eight) interrupts reported at that level ...
+ * masking is only available from SIH (secondary) modules.
+ */
+
+static void twl4030_i2c_ackirq(unsigned int irq)
+{
+}
+
+static void twl4030_i2c_disableint(unsigned int irq)
+{
+}
+
+static void twl4030_i2c_enableint(unsigned int irq)
+{
+}
+
+static struct irq_chip twl4030_irq_chip = {
+	.name	= "twl4030",
+	.ack	= twl4030_i2c_ackirq,
+	.mask	= twl4030_i2c_disableint,
+	.unmask	= twl4030_i2c_enableint,
+};
+
+/*----------------------------------------------------------------------*/
+
+/* Exported Functions */
+
+/**
+ * twl4030_i2c_write - Writes a n bit register in TWL4030
+ * @mod_no: module number
+ * @value: an array of num_bytes+1 containing data to write
+ * @reg: register address (just offset will do)
+ * @num_bytes: number of bytes to transfer
+ *
+ * IMPORTANT: for 'value' parameter: Allocate value num_bytes+1 and
+ * valid data starts at Offset 1.
+ *
+ * Returns the result of operation - 0 is success
+ */
+int twl4030_i2c_write(u8 mod_no, u8 *value, u8 reg, u8 num_bytes)
+{
+	int ret;
+	int sid;
+	struct twl4030_client *twl;
+	struct i2c_msg *msg;
+
+	if (unlikely(mod_no > TWL4030_MODULE_LAST)) {
+		pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
+		return -EPERM;
+	}
+	sid = twl4030_map[mod_no].sid;
+	twl = &twl4030_modules[sid];
+
+	if (unlikely(!inuse)) {
+		pr_err("%s: client %d is not initialized\n", DRIVER_NAME, sid);
+		return -EPERM;
+	}
+	mutex_lock(&twl->xfer_lock);
+	/*
+	 * [MSG1]: fill the register address data
+	 * fill the data Tx buffer
+	 */
+	msg = &twl->xfer_msg[0];
+	msg->addr = twl->address;
+	msg->len = num_bytes + 1;
+	msg->flags = 0;
+	msg->buf = value;
+	/* over write the first byte of buffer with the register address */
+	*value = twl4030_map[mod_no].base + reg;
+	ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 1);
+	mutex_unlock(&twl->xfer_lock);
+
+	/* i2cTransfer returns num messages.translate it pls.. */
+	if (ret >= 0)
+		ret = 0;
+	return ret;
+}
+EXPORT_SYMBOL(twl4030_i2c_write);
+
+/**
+ * twl4030_i2c_read - Reads a n bit register in TWL4030
+ * @mod_no: module number
+ * @value: an array of num_bytes containing data to be read
+ * @reg: register address (just offset will do)
+ * @num_bytes: number of bytes to transfer
+ *
+ * Returns result of operation - num_bytes is success else failure.
+ */
+int twl4030_i2c_read(u8 mod_no, u8 *value, u8 reg, u8 num_bytes)
+{
+	int ret;
+	u8 val;
+	int sid;
+	struct twl4030_client *twl;
+	struct i2c_msg *msg;
+
+	if (unlikely(mod_no > TWL4030_MODULE_LAST)) {
+		pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
+		return -EPERM;
+	}
+	sid = twl4030_map[mod_no].sid;
+	twl = &twl4030_modules[sid];
+
+	if (unlikely(!inuse)) {
+		pr_err("%s: client %d is not initialized\n", DRIVER_NAME, sid);
+		return -EPERM;
+	}
+	mutex_lock(&twl->xfer_lock);
+	/* [MSG1] fill the register address data */
+	msg = &twl->xfer_msg[0];
+	msg->addr = twl->address;
+	msg->len = 1;
+	msg->flags = 0;	/* Read the register value */
+	val = twl4030_map[mod_no].base + reg;
+	msg->buf = &val;
+	/* [MSG2] fill the data rx buffer */
+	msg = &twl->xfer_msg[1];
+	msg->addr = twl->address;
+	msg->flags = I2C_M_RD;	/* Read the register value */
+	msg->len = num_bytes;	/* only n bytes */
+	msg->buf = value;
+	ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 2);
+	mutex_unlock(&twl->xfer_lock);
+
+	/* i2cTransfer returns num messages.translate it pls.. */
+	if (ret >= 0)
+		ret = 0;
+	return ret;
+}
+EXPORT_SYMBOL(twl4030_i2c_read);
+
+/**
+ * twl4030_i2c_write_u8 - Writes a 8 bit register in TWL4030
+ * @mod_no: module number
+ * @value: the value to be written 8 bit
+ * @reg: register address (just offset will do)
+ *
+ * Returns result of operation - 0 is success
+ */
+int twl4030_i2c_write_u8(u8 mod_no, u8 value, u8 reg)
+{
+
+	/* 2 bytes offset 1 contains the data offset 0 is used by i2c_write */
+	u8 temp_buffer[2] = { 0 };
+	/* offset 1 contains the data */
+	temp_buffer[1] = value;
+	return twl4030_i2c_write(mod_no, temp_buffer, reg, 1);
+}
+EXPORT_SYMBOL(twl4030_i2c_write_u8);
+
+/**
+ * twl4030_i2c_read_u8 - Reads a 8 bit register from TWL4030
+ * @mod_no: module number
+ * @value: the value read 8 bit
+ * @reg: register address (just offset will do)
+ *
+ * Returns result of operation - 0 is success
+ */
+int twl4030_i2c_read_u8(u8 mod_no, u8 *value, u8 reg)
+{
+	return twl4030_i2c_read(mod_no, value, reg, 1);
+}
+EXPORT_SYMBOL(twl4030_i2c_read_u8);
+
+/*----------------------------------------------------------------------*/
+
+static unsigned twl4030_irq_base;
+
+static struct completion irq_event;
+
+/*
+ * This thread processes interrupts reported by the Primary Interrupt Handler.
+ */
+static int twl4030_irq_thread(void *data)
+{
+	long irq = (long)data;
+	irq_desc_t *desc = irq_desc + irq;
+	static unsigned i2c_errors;
+	const static unsigned max_i2c_errors = 100;
+
+	current->flags |= PF_NOFREEZE;
+
+	while (!kthread_should_stop()) {
+		int ret;
+		int module_irq;
+		u8 pih_isr;
+
+		/* Wait for IRQ, then read PIH irq status (also blocking) */
+		wait_for_completion_interruptible(&irq_event);
+
+		ret = twl4030_i2c_read_u8(TWL4030_MODULE_PIH, &pih_isr,
+					  REG_PIH_ISR_P1);
+		if (ret) {
+			pr_warning("%s: I2C error %d reading PIH ISR\n",
+					DRIVER_NAME, ret);
+			if (++i2c_errors >= max_i2c_errors) {
+				printk(KERN_ERR "Maximum I2C error count"
+						" exceeded.  Terminating %s.\n",
+						__func__);
+				break;
+			}
+			complete(&irq_event);
+			continue;
+		}
+
+		/* these handlers deal with the relevant SIH irq status */
+		local_irq_disable();
+		for (module_irq = twl4030_irq_base;
+				pih_isr;
+				pih_isr >>= 1, module_irq++) {
+			if (pih_isr & 0x1) {
+				irq_desc_t *d = irq_desc + module_irq;
+
+				d->handle_irq(module_irq, d);
+			}
+		}
+		local_irq_enable();
+
+		desc->chip->unmask(irq);
+	}
+
+	return 0;
+}
+
+/*
+ * do_twl4030_irq() is the desc->handle method for the twl4030 interrupt.
+ * This is a chained interrupt, so there is no desc->action method for it.
+ * Now we need to query the interrupt controller in the twl4030 to determine
+ * which module is generating the interrupt request.  However, we can't do i2c
+ * transactions in interrupt context, so we must defer that work to a kernel
+ * thread.  All we do here is acknowledge and mask the interrupt and wakeup
+ * the kernel thread.
+ */
+static void do_twl4030_irq(unsigned int irq, irq_desc_t *desc)
+{
+	const unsigned int cpu = smp_processor_id();
+
+	/*
+	 * Earlier this was desc->triggered = 1;
+	 */
+	desc->status |= IRQ_LEVEL;
+
+	/*
+	 * Acknowledge, clear _AND_ disable the interrupt.
+	 */
+	desc->chip->ack(irq);
+
+	if (!desc->depth) {
+		kstat_cpu(cpu).irqs[irq]++;
+
+		complete(&irq_event);
+	}
+}
+
+static struct task_struct * __init start_twl4030_irq_thread(long irq)
+{
+	struct task_struct *thread;
+
+	init_completion(&irq_event);
+	thread = kthread_run(twl4030_irq_thread, (void *)irq, "twl4030-irq");
+	if (!thread)
+		pr_err("%s: could not create twl4030 irq %ld thread!\n",
+		       DRIVER_NAME, irq);
+
+	return thread;
+}
+
+/*----------------------------------------------------------------------*/
+
+static int add_children(struct twl4030_platform_data *pdata)
+{
+	struct platform_device	*pdev = NULL;
+	struct twl4030_client	*twl = NULL;
+	int			status = 0;
+
+	if (twl_has_bci() && pdata->bci) {
+		twl = &twl4030_modules[3];
+
+		pdev = platform_device_alloc("twl4030_bci", -1);
+		if (!pdev) {
+			pr_debug("%s: can't alloc bci dev\n", DRIVER_NAME);
+			status = -ENOMEM;
+			goto err;
+		}
+
+		if (status == 0) {
+			pdev->dev.parent = &twl->client->dev;
+			status = platform_device_add_data(pdev, pdata->bci,
+					sizeof(*pdata->bci));
+			if (status < 0) {
+				dev_dbg(&twl->client->dev,
+					"can't add bci data, %d\n",
+					status);
+				goto err;
+			}
+		}
+
+		if (status == 0) {
+			struct resource r = {
+				.start = TWL4030_PWRIRQ_CHG_PRES,
+				.flags = IORESOURCE_IRQ,
+			};
+
+			status = platform_device_add_resources(pdev, &r, 1);
+		}
+
+		if (status == 0)
+			status = platform_device_add(pdev);
+
+		if (status < 0) {
+			platform_device_put(pdev);
+			dev_dbg(&twl->client->dev,
+					"can't create bci dev, %d\n",
+					status);
+			goto err;
+		}
+	}
+
+	if (twl_has_gpio() && pdata->gpio) {
+		twl = &twl4030_modules[1];
+
+		pdev = platform_device_alloc("twl4030_gpio", -1);
+		if (!pdev) {
+			pr_debug("%s: can't alloc gpio dev\n", DRIVER_NAME);
+			status = -ENOMEM;
+			goto err;
+		}
+
+		/* more driver model init */
+		if (status == 0) {
+			pdev->dev.parent = &twl->client->dev;
+			/* device_init_wakeup(&pdev->dev, 1); */
+
+			status = platform_device_add_data(pdev, pdata->gpio,
+					sizeof(*pdata->gpio));
+			if (status < 0) {
+				dev_dbg(&twl->client->dev,
+					"can't add gpio data, %d\n",
+					status);
+				goto err;
+			}
+		}
+
+		/* GPIO module IRQ */
+		if (status == 0) {
+			struct resource	r = {
+				.start = pdata->irq_base + 0,
+				.flags = IORESOURCE_IRQ,
+			};
+
+			status = platform_device_add_resources(pdev, &r, 1);
+		}
+
+		if (status == 0)
+			status = platform_device_add(pdev);
+
+		if (status < 0) {
+			platform_device_put(pdev);
+			dev_dbg(&twl->client->dev,
+					"can't create gpio dev, %d\n",
+					status);
+			goto err;
+		}
+	}
+
+	if (twl_has_keypad() && pdata->keypad) {
+		pdev = platform_device_alloc("twl4030_keypad", -1);
+		if (pdev) {
+			twl = &twl4030_modules[2];
+			pdev->dev.parent = &twl->client->dev;
+			device_init_wakeup(&pdev->dev, 1);
+			status = platform_device_add_data(pdev, pdata->keypad,
+					sizeof(*pdata->keypad));
+			if (status < 0) {
+				dev_dbg(&twl->client->dev,
+					"can't add keypad data, %d\n",
+					status);
+				platform_device_put(pdev);
+				goto err;
+			}
+			status = platform_device_add(pdev);
+			if (status < 0) {
+				platform_device_put(pdev);
+				dev_dbg(&twl->client->dev,
+						"can't create keypad dev, %d\n",
+						status);
+				goto err;
+			}
+		} else {
+			pr_debug("%s: can't alloc keypad dev\n", DRIVER_NAME);
+			status = -ENOMEM;
+			goto err;
+		}
+	}
+
+	if (twl_has_madc() && pdata->madc) {
+		pdev = platform_device_alloc("twl4030_madc", -1);
+		if (pdev) {
+			twl = &twl4030_modules[2];
+			pdev->dev.parent = &twl->client->dev;
+			device_init_wakeup(&pdev->dev, 1);
+			status = platform_device_add_data(pdev, pdata->madc,
+					sizeof(*pdata->madc));
+			if (status < 0) {
+				platform_device_put(pdev);
+				dev_dbg(&twl->client->dev,
+					"can't add madc data, %d\n",
+					status);
+				goto err;
+			}
+			status = platform_device_add(pdev);
+			if (status < 0) {
+				platform_device_put(pdev);
+				dev_dbg(&twl->client->dev,
+						"can't create madc dev, %d\n",
+						status);
+				goto err;
+			}
+		} else {
+			pr_debug("%s: can't alloc madc dev\n", DRIVER_NAME);
+			status = -ENOMEM;
+			goto err;
+		}
+	}
+
+	if (twl_has_rtc()) {
+		twl = &twl4030_modules[3];
+
+		pdev = platform_device_alloc("twl4030_rtc", -1);
+		if (!pdev) {
+			pr_debug("%s: can't alloc rtc dev\n", DRIVER_NAME);
+			status = -ENOMEM;
+		} else {
+			pdev->dev.parent = &twl->client->dev;
+			device_init_wakeup(&pdev->dev, 1);
+		}
+
+		/*
+		 * REVISIT platform_data here currently might use of
+		 * "msecure" line ... but for now we just expect board
+		 * setup to tell the chip "we are secure" at all times.
+		 * Eventually, Linux might become more aware of such
+		 * HW security concerns, and "least privilege".
+		 */
+
+		/* RTC module IRQ */
+		if (status == 0) {
+			struct resource	r = {
+				/* REVISIT don't hard-wire this stuff */
+				.start = TWL4030_PWRIRQ_RTC,
+				.flags = IORESOURCE_IRQ,
+			};
+
+			status = platform_device_add_resources(pdev, &r, 1);
+		}
+
+		if (status == 0)
+			status = platform_device_add(pdev);
+
+		if (status < 0) {
+			platform_device_put(pdev);
+			dev_dbg(&twl->client->dev,
+					"can't create rtc dev, %d\n",
+					status);
+			goto err;
+		}
+	}
+
+	if (twl_has_usb() && pdata->usb) {
+		twl = &twl4030_modules[0];
+
+		pdev = platform_device_alloc("twl4030_usb", -1);
+		if (!pdev) {
+			pr_debug("%s: can't alloc usb dev\n", DRIVER_NAME);
+			status = -ENOMEM;
+			goto err;
+		}
+
+		if (status == 0) {
+			pdev->dev.parent = &twl->client->dev;
+			device_init_wakeup(&pdev->dev, 1);
+			status = platform_device_add_data(pdev, pdata->usb,
+					sizeof(*pdata->usb));
+			if (status < 0) {
+				platform_device_put(pdev);
+				dev_dbg(&twl->client->dev,
+					"can't add usb data, %d\n",
+					status);
+				goto err;
+			}
+		}
+
+		if (status == 0) {
+			struct resource r = {
+				.start = TWL4030_PWRIRQ_USB_PRES,
+				.flags = IORESOURCE_IRQ,
+			};
+
+			status = platform_device_add_resources(pdev, &r, 1);
+		}
+
+		if (status == 0)
+			status = platform_device_add(pdev);
+
+		if (status < 0) {
+			platform_device_put(pdev);
+			dev_dbg(&twl->client->dev,
+					"can't create usb dev, %d\n",
+					status);
+		}
+	}
+
+err:
+	if (status)
+		pr_err("failed to add twl4030's children (status %d)\n", status);
+	return status;
+}
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * These three functions initialize the on-chip clock framework,
+ * letting it generate the right frequencies for USB, MADC, and
+ * other purposes.
+ */
+static inline int __init protect_pm_master(void)
+{
+	int e = 0;
+
+	e = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, KEY_LOCK,
+			R_PROTECT_KEY);
+	return e;
+}
+
+static inline int __init unprotect_pm_master(void)
+{
+	int e = 0;
+
+	e |= twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, KEY_UNLOCK1,
+			R_PROTECT_KEY);
+	e |= twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, KEY_UNLOCK2,
+			R_PROTECT_KEY);
+	return e;
+}
+
+static void __init clocks_init(void)
+{
+	int e = 0;
+	struct clk *osc;
+	u32 rate;
+	u8 ctrl = HFCLK_FREQ_26_MHZ;
+
+#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
+	if (cpu_is_omap2430())
+		osc = clk_get(NULL, "osc_ck");
+	else
+		osc = clk_get(NULL, "osc_sys_ck");
+#else
+	/* REVISIT for non-OMAP systems, pass the clock rate from
+	 * board init code, using platform_data.
+	 */
+	osc = ERR_PTR(-EIO);
+#endif
+	if (IS_ERR(osc)) {
+		printk(KERN_WARNING "Skipping twl4030 internal clock init and "
+				"using bootloader value (unknown osc rate)\n");
+		return;
+	}
+
+	rate = clk_get_rate(osc);
+	clk_put(osc);
+
+	switch (rate) {
+	case 19200000:
+		ctrl = HFCLK_FREQ_19p2_MHZ;
+		break;
+	case 26000000:
+		ctrl = HFCLK_FREQ_26_MHZ;
+		break;
+	case 38400000:
+		ctrl = HFCLK_FREQ_38p4_MHZ;
+		break;
+	}
+
+	ctrl |= HIGH_PERF_SQ;
+	e |= unprotect_pm_master();
+	/* effect->MADC+USB ck en */
+	e |= twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, ctrl, R_CFG_BOOT);
+	e |= protect_pm_master();
+
+	if (e < 0)
+		pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e);
+}
+
+/*----------------------------------------------------------------------*/
+
+/**
+ * twl4030_i2c_clear_isr - clear TWL4030 SIH ISR regs via read + write
+ * @mod_no: TWL4030 module number
+ * @reg: register index to clear
+ * @cor: value of the <module>_SIH_CTRL.COR bit (1 or 0)
+ *
+ * Either reads (cor == 1) or writes (cor == 0) to a TWL4030 interrupt
+ * status register to ensure that any prior interrupts are cleared.
+ * Returns the status from the I2C read operation.
+ */
+static int __init twl4030_i2c_clear_isr(u8 mod_no, u8 reg, u8 cor)
+{
+	u8 tmp;
+
+	return (cor) ? twl4030_i2c_read_u8(mod_no, &tmp, reg) :
+		twl4030_i2c_write_u8(mod_no, 0xff, reg);
+}
+
+/**
+ * twl4030_read_cor_bit - are TWL module ISRs cleared by reads or writes?
+ * @mod_no: TWL4030 module number
+ * @reg: register index to clear
+ *
+ * Returns 1 if the TWL4030 SIH interrupt status registers (ISRs) for
+ * the specified TWL module are cleared by reads, or 0 if cleared by
+ * writes.
+ */
+static int twl4030_read_cor_bit(u8 mod_no, u8 reg)
+{
+	u8 tmp = 0;
+
+	WARN_ON(twl4030_i2c_read_u8(mod_no, &tmp, reg) < 0);
+
+	tmp &= TWL4030_SIH_CTRL_COR_MASK;
+	tmp >>= __ffs(TWL4030_SIH_CTRL_COR_MASK);
+
+	return tmp;
+}
+
+/**
+ * twl4030_mask_clear_intrs - mask and clear all TWL4030 interrupts
+ * @t: pointer to twl4030_mod_iregs array
+ * @t_sz: ARRAY_SIZE(t) (starting at 1)
+ *
+ * Mask all TWL4030 interrupt mask registers (IMRs) and clear all
+ * interrupt status registers (ISRs).  No return value, but will WARN if
+ * any I2C operations fail.
+ */
+static void __init twl4030_mask_clear_intrs(const struct twl4030_mod_iregs *t,
+					    const u8 t_sz)
+{
+	int i, j;
+
+	/*
+	 * N.B. - further efficiency is possible here.  Eight I2C
+	 * operations on BCI and GPIO modules are avoidable if I2C
+	 * burst read/write transactions were implemented.  Would
+	 * probably save about 1ms of boot time and a small amount of
+	 * power.
+	 */
+	for (i = 0; i < t_sz; i++) {
+		const struct twl4030_mod_iregs tmr = t[i];
+		int cor;
+
+		/* Are ISRs cleared by reads or writes? */
+		cor = twl4030_read_cor_bit(tmr.mod_no, tmr.sih_ctrl);
+
+		for (j = 0; j < tmr.reg_cnt; j++) {
+
+			/* Mask interrupts at the TWL4030 */
+			WARN_ON(twl4030_i2c_write_u8(tmr.mod_no, 0xff,
+						     tmr.imrs[j]) < 0);
+
+			/* Clear TWL4030 ISRs */
+			WARN_ON(twl4030_i2c_clear_isr(tmr.mod_no,
+						      tmr.isrs[j], cor) < 0);
+		}
+	}
+}
+
+
+static void twl_init_irq(int irq_num, unsigned irq_base, unsigned irq_end)
+{
+	int	i;
+
+	/*
+	 * Mask and clear all TWL4030 interrupts since initially we do
+	 * not have any TWL4030 module interrupt handlers present
+	 */
+	twl4030_mask_clear_intrs(twl4030_mod_regs,
+				 ARRAY_SIZE(twl4030_mod_regs));
+
+	twl4030_irq_base = irq_base;
+
+	/* install an irq handler for each of the PIH modules */
+	for (i = irq_base; i < irq_end; i++) {
+		set_irq_chip_and_handler(i, &twl4030_irq_chip,
+				handle_simple_irq);
+		activate_irq(i);
+	}
+
+	/* install an irq handler to demultiplex the TWL4030 interrupt */
+	set_irq_data(irq_num, start_twl4030_irq_thread(irq_num));
+	set_irq_chained_handler(irq_num, do_twl4030_irq);
+}
+
+/*----------------------------------------------------------------------*/
+
+static int twl4030_remove(struct i2c_client *client)
+{
+	unsigned i;
+
+	/* FIXME undo twl_init_irq() */
+	if (twl4030_irq_base) {
+		dev_err(&client->dev, "can't yet clean up IRQs?\n");
+		return -ENOSYS;
+	}
+
+	for (i = 0; i < TWL4030_NUM_SLAVES; i++) {
+		struct twl4030_client	*twl = &twl4030_modules[i];
+
+		if (twl->client && twl->client != client)
+			i2c_unregister_device(twl->client);
+		twl4030_modules[i].client = NULL;
+	}
+	inuse = false;
+	return 0;
+}
+
+/* NOTE:  this driver only handles a single twl4030/tps659x0 chip */
+static int
+twl4030_probe(struct i2c_client *client, const struct i2c_device_id *id)
+{
+	int				status;
+	unsigned			i;
+	struct twl4030_platform_data	*pdata = client->dev.platform_data;
+
+	if (!pdata) {
+		dev_dbg(&client->dev, "no platform data?\n");
+		return -EINVAL;
+	}
+
+	if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) {
+		dev_dbg(&client->dev, "can't talk I2C?\n");
+		return -EIO;
+	}
+
+	if (inuse || twl4030_irq_base) {
+		dev_dbg(&client->dev, "driver is already in use\n");
+		return -EBUSY;
+	}
+
+	for (i = 0; i < TWL4030_NUM_SLAVES; i++) {
+		struct twl4030_client	*twl = &twl4030_modules[i];
+
+		twl->address = client->addr + i;
+		if (i == 0)
+			twl->client = client;
+		else {
+			twl->client = i2c_new_dummy(client->adapter,
+					twl->address);
+			if (!twl->client) {
+				dev_err(&twl->client->dev,
+					"can't attach client %d\n", i);
+				status = -ENOMEM;
+				goto fail;
+			}
+			strlcpy(twl->client->name, id->name,
+					sizeof(twl->client->name));
+		}
+		mutex_init(&twl->xfer_lock);
+	}
+	inuse = true;
+
+	/* setup clock framework */
+	clocks_init();
+
+	/* Maybe init the T2 Interrupt subsystem */
+	if (client->irq
+			&& pdata->irq_base
+			&& pdata->irq_end > pdata->irq_base) {
+		twl_init_irq(client->irq, pdata->irq_base, pdata->irq_end);
+		dev_info(&client->dev, "IRQ %d chains IRQs %d..%d\n",
+				client->irq, pdata->irq_base, pdata->irq_end - 1);
+	}
+
+	status = add_children(pdata);
+fail:
+	if (status < 0)
+		twl4030_remove(client);
+	return status;
+}
+
+static const struct i2c_device_id twl4030_ids[] = {
+	{ "twl4030", 0 },	/* "Triton 2" */
+	{ "tps65950", 0 },	/* catalog version of twl4030 */
+	{ "tps65930", 0 },	/* fewer LDOs and DACs; no charger */
+	{ "tps65920", 0 },	/* fewer LDOs; no codec or charger */
+	{ "twl5030", 0 },	/* T2 updated */
+	{ /* end of list */ },
+};
+MODULE_DEVICE_TABLE(i2c, twl4030_ids);
+
+/* One Client Driver , 4 Clients */
+static struct i2c_driver twl4030_driver = {
+	.driver.name	= DRIVER_NAME,
+	.id_table	= twl4030_ids,
+	.probe		= twl4030_probe,
+	.remove		= twl4030_remove,
+};
+
+static int __init twl4030_init(void)
+{
+	return i2c_add_driver(&twl4030_driver);
+}
+subsys_initcall(twl4030_init);
+
+static void __exit twl4030_exit(void)
+{
+	i2c_del_driver(&twl4030_driver);
+}
+module_exit(twl4030_exit);
+
+MODULE_AUTHOR("Texas Instruments, Inc.");
+MODULE_DESCRIPTION("I2C Core interface for TWL4030");
+MODULE_LICENSE("GPL");

drivers/mfd/wm8350-core.c

···
 
 	mutex_init(&wm8350->irq_mutex);
 	INIT_WORK(&wm8350->irq_work, wm8350_irq_worker);
-	if (irq != NO_IRQ) {
+	if (irq) {
 		ret = request_irq(irq, wm8350_irq, 0,
 				  "wm8350", wm8350);
 		if (ret != 0) {

include/linux/i2c/twl4030.h

···
+/*
+ * twl4030.h - header for TWL4030 PM and audio CODEC device
+ *
+ * Copyright (C) 2005-2006 Texas Instruments, Inc.
+ *
+ * Based on tlv320aic23.c:
+ * Copyright (c) by Kai Svahn <[e-mail]>
+ *
+ * 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.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ *
+ */
+
+#ifndef __TWL4030_H_
+#define __TWL4030_H_
+
+/*
+ * Using the twl4030 core we address registers using a pair
+ *	{ module id, relative register offset }
+ * which that core then maps to the relevant
+ *	{ i2c slave, absolute register address }
+ *
+ * The module IDs are meaningful only to the twl4030 core code,
+ * which uses them as array indices to look up the first register
+ * address each module uses within a given i2c slave.
+ */
+
+/* Slave 0 (i2c address 0x48) */
+#define TWL4030_MODULE_USB		0x00
+
+/* Slave 1 (i2c address 0x49) */
+#define TWL4030_MODULE_AUDIO_VOICE	0x01
+#define TWL4030_MODULE_GPIO		0x02
+#define TWL4030_MODULE_INTBR		0x03
+#define TWL4030_MODULE_PIH		0x04
+#define TWL4030_MODULE_TEST		0x05
+
+/* Slave 2 (i2c address 0x4a) */
+#define TWL4030_MODULE_KEYPAD		0x06
+#define TWL4030_MODULE_MADC		0x07
+#define TWL4030_MODULE_INTERRUPTS	0x08
+#define TWL4030_MODULE_LED		0x09
+#define TWL4030_MODULE_MAIN_CHARGE	0x0A
+#define TWL4030_MODULE_PRECHARGE	0x0B
+#define TWL4030_MODULE_PWM0		0x0C
+#define TWL4030_MODULE_PWM1		0x0D
+#define TWL4030_MODULE_PWMA		0x0E
+#define TWL4030_MODULE_PWMB		0x0F
+
+/* Slave 3 (i2c address 0x4b) */
+#define TWL4030_MODULE_BACKUP		0x10
+#define TWL4030_MODULE_INT		0x11
+#define TWL4030_MODULE_PM_MASTER	0x12
+#define TWL4030_MODULE_PM_RECEIVER	0x13
+#define TWL4030_MODULE_RTC		0x14
+#define TWL4030_MODULE_SECURED_REG	0x15
+
+/*
+ * Read and write single 8-bit registers
+ */
+int twl4030_i2c_write_u8(u8 mod_no, u8 val, u8 reg);
+int twl4030_i2c_read_u8(u8 mod_no, u8 *val, u8 reg);
+
+/*
+ * Read and write several 8-bit registers at once.
+ *
+ * IMPORTANT:  For twl4030_i2c_write(), allocate num_bytes + 1
+ * for the value, and populate your data starting at offset 1.
+ */
+int twl4030_i2c_write(u8 mod_no, u8 *value, u8 reg, u8 num_bytes);
+int twl4030_i2c_read(u8 mod_no, u8 *value, u8 reg, u8 num_bytes);
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * NOTE:  at up to 1024 registers, this is a big chip.
+ *
+ * Avoid putting register declarations in this file, instead of into
+ * a driver-private file, unless some of the registers in a block
+ * need to be shared with other drivers.  One example is blocks that
+ * have Secondary IRQ Handler (SIH) registers.
+ */
+
+#define TWL4030_SIH_CTRL_EXCLEN_MASK	BIT(0)
+#define TWL4030_SIH_CTRL_PENDDIS_MASK	BIT(1)
+#define TWL4030_SIH_CTRL_COR_MASK	BIT(2)
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * GPIO Block Register offsets (use TWL4030_MODULE_GPIO)
+ */
+
+#define REG_GPIODATAIN1			0x0
+#define REG_GPIODATAIN2			0x1
+#define REG_GPIODATAIN3			0x2
+#define REG_GPIODATADIR1		0x3
+#define REG_GPIODATADIR2		0x4
+#define REG_GPIODATADIR3		0x5
+#define REG_GPIODATAOUT1		0x6
+#define REG_GPIODATAOUT2		0x7
+#define REG_GPIODATAOUT3		0x8
+#define REG_CLEARGPIODATAOUT1		0x9
+#define REG_CLEARGPIODATAOUT2		0xA
+#define REG_CLEARGPIODATAOUT3		0xB
+#define REG_SETGPIODATAOUT1		0xC
+#define REG_SETGPIODATAOUT2		0xD
+#define REG_SETGPIODATAOUT3		0xE
+#define REG_GPIO_DEBEN1			0xF
+#define REG_GPIO_DEBEN2			0x10
+#define REG_GPIO_DEBEN3			0x11
+#define REG_GPIO_CTRL			0x12
+#define REG_GPIOPUPDCTR1		0x13
+#define REG_GPIOPUPDCTR2		0x14
+#define REG_GPIOPUPDCTR3		0x15
+#define REG_GPIOPUPDCTR4		0x16
+#define REG_GPIOPUPDCTR5		0x17
+#define REG_GPIO_ISR1A			0x19
+#define REG_GPIO_ISR2A			0x1A
+#define REG_GPIO_ISR3A			0x1B
+#define REG_GPIO_IMR1A			0x1C
+#define REG_GPIO_IMR2A			0x1D
+#define REG_GPIO_IMR3A			0x1E
+#define REG_GPIO_ISR1B			0x1F
+#define REG_GPIO_ISR2B			0x20
+#define REG_GPIO_ISR3B			0x21
+#define REG_GPIO_IMR1B			0x22
+#define REG_GPIO_IMR2B			0x23
+#define REG_GPIO_IMR3B			0x24
+#define REG_GPIO_EDR1			0x28
+#define REG_GPIO_EDR2			0x29
+#define REG_GPIO_EDR3			0x2A
+#define REG_GPIO_EDR4			0x2B
+#define REG_GPIO_EDR5			0x2C
+#define REG_GPIO_SIH_CTRL		0x2D
+
+/* Up to 18 signals are available as GPIOs, when their
+ * pins are not assigned to another use (such as ULPI/USB).
+ */
+#define TWL4030_GPIO_MAX		18
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * Keypad register offsets (use TWL4030_MODULE_KEYPAD)
+ * ... SIH/interrupt only
+ */
+
+#define TWL4030_KEYPAD_KEYP_ISR1	0x11
+#define TWL4030_KEYPAD_KEYP_IMR1	0x12
+#define TWL4030_KEYPAD_KEYP_ISR2	0x13
+#define TWL4030_KEYPAD_KEYP_IMR2	0x14
+#define TWL4030_KEYPAD_KEYP_SIR		0x15	/* test register */
+#define TWL4030_KEYPAD_KEYP_EDR		0x16
+#define TWL4030_KEYPAD_KEYP_SIH_CTRL	0x17
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * Multichannel ADC register offsets (use TWL4030_MODULE_MADC)
+ * ... SIH/interrupt only
+ */
+
+#define TWL4030_MADC_ISR1		0x61
+#define TWL4030_MADC_IMR1		0x62
+#define TWL4030_MADC_ISR2		0x63
+#define TWL4030_MADC_IMR2		0x64
+#define TWL4030_MADC_SIR		0x65	/* test register */
+#define TWL4030_MADC_EDR		0x66
+#define TWL4030_MADC_SIH_CTRL		0x67
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * Battery charger register offsets (use TWL4030_MODULE_INTERRUPTS)
+ */
+
+#define TWL4030_INTERRUPTS_BCIISR1A	0x0
+#define TWL4030_INTERRUPTS_BCIISR2A	0x1
+#define TWL4030_INTERRUPTS_BCIIMR1A	0x2
+#define TWL4030_INTERRUPTS_BCIIMR2A	0x3
+#define TWL4030_INTERRUPTS_BCIISR1B	0x4
+#define TWL4030_INTERRUPTS_BCIISR2B	0x5
+#define TWL4030_INTERRUPTS_BCIIMR1B	0x6
+#define TWL4030_INTERRUPTS_BCIIMR2B	0x7
+#define TWL4030_INTERRUPTS_BCISIR1	0x8	/* test register */
+#define TWL4030_INTERRUPTS_BCISIR2	0x9	/* test register */
+#define TWL4030_INTERRUPTS_BCIEDR1	0xa
+#define TWL4030_INTERRUPTS_BCIEDR2	0xb
+#define TWL4030_INTERRUPTS_BCIEDR3	0xc
+#define TWL4030_INTERRUPTS_BCISIHCTRL	0xd
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * Power Interrupt block register offsets (use TWL4030_MODULE_INT)
+ */
+
+#define TWL4030_INT_PWR_ISR1		0x0
+#define TWL4030_INT_PWR_IMR1		0x1
+#define TWL4030_INT_PWR_ISR2		0x2
+#define TWL4030_INT_PWR_IMR2		0x3
+#define TWL4030_INT_PWR_SIR		0x4	/* test register */
+#define TWL4030_INT_PWR_EDR1		0x5
+#define TWL4030_INT_PWR_EDR2		0x6
+#define TWL4030_INT_PWR_SIH_CTRL	0x7
+
+/*----------------------------------------------------------------------*/
+
+struct twl4030_bci_platform_data {
+	int *battery_tmp_tbl;
+	unsigned int tblsize;
+};
+
+/* TWL4030_GPIO_MAX (18) GPIOs, with interrupts */
+struct twl4030_gpio_platform_data {
+	int		gpio_base;
+	unsigned	irq_base, irq_end;
+
+	/* For gpio-N, bit (1 << N) in "pullups" is set if that pullup
+	 * should be enabled.  Else, if that bit is set in "pulldowns",
+	 * that pulldown is enabled.  Don't waste power by letting any
+	 * digital inputs float...
+	 */
+	u32		pullups;
+	u32		pulldowns;
+
+	int		(*setup)(struct device *dev,
+				unsigned gpio, unsigned ngpio);
+	int		(*teardown)(struct device *dev,
+				unsigned gpio, unsigned ngpio);
+};
+
+struct twl4030_madc_platform_data {
+	int		irq_line;
+};
+
+struct twl4030_keypad_data {
+	int rows;
+	int cols;
+	int *keymap;
+	int irq;
+	unsigned int keymapsize;
+	unsigned int rep:1;
+};
+
+enum twl4030_usb_mode {
+	T2_USB_MODE_ULPI = 1,
+	T2_USB_MODE_CEA2011_3PIN = 2,
+};
+
+struct twl4030_usb_data {
+	enum twl4030_usb_mode	usb_mode;
+};
+
+struct twl4030_platform_data {
+	unsigned				irq_base, irq_end;
+	struct twl4030_bci_platform_data	*bci;
+	struct twl4030_gpio_platform_data	*gpio;
+	struct twl4030_madc_platform_data	*madc;
+	struct twl4030_keypad_data		*keypad;
+	struct twl4030_usb_data			*usb;
+
+	/* REVISIT more to come ... _nothing_ should be hard-wired */
+};
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * FIXME completely stop using TWL4030_IRQ_BASE ... instead, pass the
+ * IRQ data to subsidiary devices using platform device resources.
+ */
+
+/* IRQ information-need base */
+#include <mach/irqs.h>
+/* TWL4030 interrupts */
+
+/* #define TWL4030_MODIRQ_GPIO		(TWL4030_IRQ_BASE + 0) */
+#define TWL4030_MODIRQ_KEYPAD		(TWL4030_IRQ_BASE + 1)
+#define TWL4030_MODIRQ_BCI		(TWL4030_IRQ_BASE + 2)
+#define TWL4030_MODIRQ_MADC		(TWL4030_IRQ_BASE + 3)
+/* #define TWL4030_MODIRQ_USB		(TWL4030_IRQ_BASE + 4) */
+#define TWL4030_MODIRQ_PWR		(TWL4030_IRQ_BASE + 5)
+
+#define TWL4030_PWRIRQ_PWRBTN		(TWL4030_PWR_IRQ_BASE + 0)
+#define TWL4030_PWRIRQ_CHG_PRES		(TWL4030_PWR_IRQ_BASE + 1)
+#define TWL4030_PWRIRQ_USB_PRES		(TWL4030_PWR_IRQ_BASE + 2)
+#define TWL4030_PWRIRQ_RTC		(TWL4030_PWR_IRQ_BASE + 3)
+#define TWL4030_PWRIRQ_HOT_DIE		(TWL4030_PWR_IRQ_BASE + 4)
+#define TWL4030_PWRIRQ_PWROK_TIMEOUT	(TWL4030_PWR_IRQ_BASE + 5)
+#define TWL4030_PWRIRQ_MBCHG		(TWL4030_PWR_IRQ_BASE + 6)
+#define TWL4030_PWRIRQ_SC_DETECT	(TWL4030_PWR_IRQ_BASE + 7)
+
+/* Rest are unsued currently*/
+
+/* Offsets to Power Registers */
+#define TWL4030_VDAC_DEV_GRP		0x3B
+#define TWL4030_VDAC_DEDICATED		0x3E
+#define TWL4030_VAUX1_DEV_GRP		0x17
+#define TWL4030_VAUX1_DEDICATED		0x1A
+#define TWL4030_VAUX2_DEV_GRP		0x1B
+#define TWL4030_VAUX2_DEDICATED		0x1E
+#define TWL4030_VAUX3_DEV_GRP		0x1F
+#define TWL4030_VAUX3_DEDICATED		0x22
+
+/* TWL4030 GPIO interrupt definitions */
+
+#define TWL4030_GPIO_IRQ_NO(n)		(TWL4030_GPIO_IRQ_BASE + (n))
+#define TWL4030_GPIO_IS_ENABLE		1
+
+/*
+ * Exported TWL4030 GPIO APIs
+ *
+ * WARNING -- use standard GPIO and IRQ calls instead; these will vanish.
+ */
+int twl4030_get_gpio_datain(int gpio);
+int twl4030_request_gpio(int gpio);
+int twl4030_set_gpio_debounce(int gpio, int enable);
+int twl4030_free_gpio(int gpio);
+
+#if defined(CONFIG_TWL4030_BCI_BATTERY) || \
+	defined(CONFIG_TWL4030_BCI_BATTERY_MODULE)
+	extern int twl4030charger_usb_en(int enable);
+#else
+	static inline int twl4030charger_usb_en(int enable) { return 0; }
+#endif
+
+#endif /* End of __TWL4030_H */

include/linux/mfd/da903x.h

···
+#ifndef __LINUX_PMIC_DA903X_H
+#define __LINUX_PMIC_DA903X_H
+
+/* Unified sub device IDs for DA9030/DA9034 */
+enum {
+	DA9030_ID_LED_1,
+	DA9030_ID_LED_2,
+	DA9030_ID_LED_3,
+	DA9030_ID_LED_4,
+	DA9030_ID_LED_PC,
+	DA9030_ID_VIBRA,
+	DA9030_ID_WLED,
+	DA9030_ID_BUCK1,
+	DA9030_ID_BUCK2,
+	DA9030_ID_LDO1,
+	DA9030_ID_LDO2,
+	DA9030_ID_LDO3,
+	DA9030_ID_LDO4,
+	DA9030_ID_LDO5,
+	DA9030_ID_LDO6,
+	DA9030_ID_LDO7,
+	DA9030_ID_LDO8,
+	DA9030_ID_LDO9,
+	DA9030_ID_LDO10,
+	DA9030_ID_LDO11,
+	DA9030_ID_LDO12,
+	DA9030_ID_LDO13,
+	DA9030_ID_LDO14,
+	DA9030_ID_LDO15,
+	DA9030_ID_LDO16,
+	DA9030_ID_LDO17,
+	DA9030_ID_LDO18,
+	DA9030_ID_LDO19,
+	DA9030_ID_LDO_INT,	/* LDO Internal */
+
+	DA9034_ID_LED_1,
+	DA9034_ID_LED_2,
+	DA9034_ID_VIBRA,
+	DA9034_ID_WLED,
+	DA9034_ID_TOUCH,
+
+	DA9034_ID_BUCK1,
+	DA9034_ID_BUCK2,
+	DA9034_ID_LDO1,
+	DA9034_ID_LDO2,
+	DA9034_ID_LDO3,
+	DA9034_ID_LDO4,
+	DA9034_ID_LDO5,
+	DA9034_ID_LDO6,
+	DA9034_ID_LDO7,
+	DA9034_ID_LDO8,
+	DA9034_ID_LDO9,
+	DA9034_ID_LDO10,
+	DA9034_ID_LDO11,
+	DA9034_ID_LDO12,
+	DA9034_ID_LDO13,
+	DA9034_ID_LDO14,
+	DA9034_ID_LDO15,
+};
+
+/*
+ * DA9030/DA9034 LEDs sub-devices uses generic "struct led_info"
+ * as the platform_data
+ */
+
+/* DA9030 flags for "struct led_info"
+ */
+#define DA9030_LED_RATE_ON	(0 << 5)
+#define DA9030_LED_RATE_052S	(1 << 5)
+#define DA9030_LED_DUTY_1_16	(0 << 3)
+#define DA9030_LED_DUTY_1_8	(1 << 3)
+#define DA9030_LED_DUTY_1_4	(2 << 3)
+#define DA9030_LED_DUTY_1_2	(3 << 3)
+
+#define DA9030_VIBRA_MODE_1P3V	(0 << 1)
+#define DA9030_VIBRA_MODE_2P7V	(1 << 1)
+#define DA9030_VIBRA_FREQ_1HZ	(0 << 2)
+#define DA9030_VIBRA_FREQ_2HZ	(1 << 2)
+#define DA9030_VIBRA_FREQ_4HZ	(2 << 2)
+#define DA9030_VIBRA_FREQ_8HZ	(3 << 2)
+#define DA9030_VIBRA_DUTY_ON	(0 << 4)
+#define DA9030_VIBRA_DUTY_75P	(1 << 4)
+#define DA9030_VIBRA_DUTY_50P	(2 << 4)
+#define DA9030_VIBRA_DUTY_25P	(3 << 4)
+
+/* DA9034 flags for "struct led_info" */
+#define DA9034_LED_RAMP		(1 << 7)
+
+/* DA9034 touch screen platform data */
+struct da9034_touch_pdata {
+	int	interval_ms;	/* sampling interval while pen down */
+	int	x_inverted;
+	int	y_inverted;
+};
+
+struct da903x_subdev_info {
+	int		id;
+	const char	*name;
+	void		*platform_data;
+};
+
+struct da903x_platform_data {
+	int num_subdevs;
+	struct da903x_subdev_info *subdevs;
+};
+
+/* bit definitions for DA9030 events */
+#define DA9030_EVENT_ONKEY		(1 << 0)
+#define	DA9030_EVENT_PWREN		(1 << 1)
+#define	DA9030_EVENT_EXTON		(1 << 2)
+#define	DA9030_EVENT_CHDET		(1 << 3)
+#define	DA9030_EVENT_TBAT		(1 << 4)
+#define	DA9030_EVENT_VBATMON		(1 << 5)
+#define	DA9030_EVENT_VBATMON_TXON	(1 << 6)
+#define	DA9030_EVENT_CHIOVER		(1 << 7)
+#define	DA9030_EVENT_TCTO		(1 << 8)
+#define	DA9030_EVENT_CCTO		(1 << 9)
+#define	DA9030_EVENT_ADC_READY		(1 << 10)
+#define	DA9030_EVENT_VBUS_4P4		(1 << 11)
+#define	DA9030_EVENT_VBUS_4P0		(1 << 12)
+#define	DA9030_EVENT_SESS_VALID		(1 << 13)
+#define	DA9030_EVENT_SRP_DETECT		(1 << 14)
+#define	DA9030_EVENT_WATCHDOG		(1 << 15)
+#define	DA9030_EVENT_LDO15		(1 << 16)
+#define	DA9030_EVENT_LDO16		(1 << 17)
+#define	DA9030_EVENT_LDO17		(1 << 18)
+#define	DA9030_EVENT_LDO18		(1 << 19)
+#define	DA9030_EVENT_LDO19		(1 << 20)
+#define	DA9030_EVENT_BUCK2		(1 << 21)
+
+/* bit definitions for DA9034 events */
+#define DA9034_EVENT_ONKEY		(1 << 0)
+#define DA9034_EVENT_EXTON		(1 << 2)
+#define DA9034_EVENT_CHDET		(1 << 3)
+#define DA9034_EVENT_TBAT		(1 << 4)
+#define DA9034_EVENT_VBATMON		(1 << 5)
+#define DA9034_EVENT_REV_IOVER		(1 << 6)
+#define DA9034_EVENT_CH_IOVER		(1 << 7)
+#define DA9034_EVENT_CH_TCTO		(1 << 8)
+#define DA9034_EVENT_CH_CCTO		(1 << 9)
+#define DA9034_EVENT_USB_DEV		(1 << 10)
+#define DA9034_EVENT_OTGCP_IOVER	(1 << 11)
+#define DA9034_EVENT_VBUS_4P55		(1 << 12)
+#define DA9034_EVENT_VBUS_3P8		(1 << 13)
+#define DA9034_EVENT_SESS_1P8		(1 << 14)
+#define DA9034_EVENT_SRP_READY		(1 << 15)
+#define DA9034_EVENT_ADC_MAN		(1 << 16)
+#define DA9034_EVENT_ADC_AUTO4		(1 << 17)
+#define DA9034_EVENT_ADC_AUTO5		(1 << 18)
+#define DA9034_EVENT_ADC_AUTO6		(1 << 19)
+#define DA9034_EVENT_PEN_DOWN		(1 << 20)
+#define DA9034_EVENT_TSI_READY		(1 << 21)
+#define DA9034_EVENT_UART_TX		(1 << 22)
+#define DA9034_EVENT_UART_RX		(1 << 23)
+#define DA9034_EVENT_HEADSET		(1 << 25)
+#define DA9034_EVENT_HOOKSWITCH		(1 << 26)
+#define DA9034_EVENT_WATCHDOG		(1 << 27)
+
+extern int da903x_register_notifier(struct device *dev,
+		struct notifier_block *nb, unsigned int events);
+extern int da903x_unregister_notifier(struct device *dev,
+		struct notifier_block *nb, unsigned int events);
+
+/* Status Query Interface */
+#define DA9030_STATUS_ONKEY		(1 << 0)
+#define DA9030_STATUS_PWREN1		(1 << 1)
+#define DA9030_STATUS_EXTON		(1 << 2)
+#define DA9030_STATUS_CHDET		(1 << 3)
+#define DA9030_STATUS_TBAT		(1 << 4)
+#define DA9030_STATUS_VBATMON		(1 << 5)
+#define DA9030_STATUS_VBATMON_TXON	(1 << 6)
+#define DA9030_STATUS_MCLKDET		(1 << 7)
+
+#define DA9034_STATUS_ONKEY		(1 << 0)
+#define DA9034_STATUS_EXTON		(1 << 2)
+#define DA9034_STATUS_CHDET		(1 << 3)
+#define DA9034_STATUS_TBAT		(1 << 4)
+#define DA9034_STATUS_VBATMON		(1 << 5)
+#define DA9034_STATUS_PEN_DOWN		(1 << 6)
+#define DA9034_STATUS_MCLKDET		(1 << 7)
+#define DA9034_STATUS_USB_DEV		(1 << 8)
+#define DA9034_STATUS_HEADSET		(1 << 9)
+#define DA9034_STATUS_HOOKSWITCH	(1 << 10)
+#define DA9034_STATUS_REMCON		(1 << 11)
+#define DA9034_STATUS_VBUS_VALID_4P55	(1 << 12)
+#define DA9034_STATUS_VBUS_VALID_3P8	(1 << 13)
+#define DA9034_STATUS_SESS_VALID_1P8	(1 << 14)
+#define DA9034_STATUS_SRP_READY		(1 << 15)
+
+extern int da903x_query_status(struct device *dev, unsigned int status);
+
+
+/* NOTE: the two functions below are not intended for use outside
+ * of the DA9034 sub-device drivers
+ */
+extern int da903x_write(struct device *dev, int reg, uint8_t val);
+extern int da903x_read(struct device *dev, int reg, uint8_t *val);
+extern int da903x_update(struct device *dev, int reg, uint8_t val, uint8_t mask);
+extern int da903x_set_bits(struct device *dev, int reg, uint8_t bit_mask);
+extern int da903x_clr_bits(struct device *dev, int reg, uint8_t bit_mask);
+#endif /* __LINUX_PMIC_DA903X_H */

include/linux/mfd/t7l66xb.h

···
 #include <linux/mfd/tmio.h>
 
 struct t7l66xb_platform_data {
-	int (*enable_clk32k)(struct platform_device *dev);
-	void (*disable_clk32k)(struct platform_device *dev);
 	int (*enable)(struct platform_device *dev);
 	int (*disable)(struct platform_device *dev);
 	int (*suspend)(struct platform_device *dev);

include/linux/mfd/tc6387xb.h

···
 #define MFD_TC6387XB_H
 
 struct tc6387xb_platform_data {
-	int (*enable_clk32k)(struct platform_device *dev);
-	void (*disable_clk32k)(struct platform_device *dev);
-
 	int (*enable)(struct platform_device *dev);
 	int (*disable)(struct platform_device *dev);
 	int (*suspend)(struct platform_device *dev);

include/linux/mfd/tc6393xb.h

···
 #ifndef MFD_TC6393XB_H
 #define MFD_TC6393XB_H
 
+#include <linux/fb.h>
+
 /* Also one should provide the CK3P6MI clock */
 struct tc6393xb_platform_data {
 	u16	scr_pll2cr;	/* PLL2 Control */
 	u16	scr_gper;	/* GP Enable */
-	u32	scr_gpo_doecr;	/* GPO Data OE Control */
-	u32	scr_gpo_dsr;	/* GPO Data Set */
 
 	int	(*enable)(struct platform_device *dev);
 	int	(*disable)(struct platform_device *dev);
···
 
 	int	irq_base;	/* base for subdevice irqs */
 	int	gpio_base;
+	int	(*setup)(struct platform_device *dev);
+	void	(*teardown)(struct platform_device *dev);
 
 	struct tmio_nand_data	*nand_data;
+	struct tmio_fb_data	*fb_data;
+
+	unsigned resume_restore : 1; /* make special actions
+					to preserve the state
+					on suspend/resume */
 };
+
+extern int tc6393xb_lcd_mode(struct platform_device *fb,
+			     const struct fb_videomode *mode);
+extern int tc6393xb_lcd_set_power(struct platform_device *fb, bool on);
 
 /*
  * Relative to irq_base
  */
 #define	IRQ_TC6393_NAND		0
 #define	IRQ_TC6393_MMC		1
+#define	IRQ_TC6393_OHCI		2
+#define	IRQ_TC6393_FB		4
 
 #define	TC6393XB_NR_IRQS	8