summaryrefslogtreecommitdiffstats
path: root/drivers/mfd
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/mfd')
-rw-r--r--drivers/mfd/88pm8607.c302
-rw-r--r--drivers/mfd/88pm860x-core.c740
-rw-r--r--drivers/mfd/88pm860x-i2c.c236
-rw-r--r--drivers/mfd/Kconfig72
-rw-r--r--drivers/mfd/Makefile8
-rw-r--r--drivers/mfd/ab3100-core.c54
-rw-r--r--drivers/mfd/ab3100-otp.c13
-rw-r--r--drivers/mfd/htc-i2cpld.c710
-rw-r--r--drivers/mfd/lpc_sch.c133
-rw-r--r--drivers/mfd/max8925-core.c656
-rw-r--r--drivers/mfd/max8925-i2c.c211
-rw-r--r--drivers/mfd/mfd-core.c5
-rw-r--r--drivers/mfd/sh_mobile_sdhi.c6
-rw-r--r--drivers/mfd/sm501.c7
-rw-r--r--drivers/mfd/t7l66xb.c4
-rw-r--r--drivers/mfd/tc6393xb.c2
-rw-r--r--drivers/mfd/twl-core.c41
-rw-r--r--drivers/mfd/twl4030-power.c52
-rw-r--r--drivers/mfd/ucb1x00-core.c1
-rw-r--r--drivers/mfd/wm831x-core.c51
-rw-r--r--drivers/mfd/wm8350-core.c35
-rw-r--r--drivers/mfd/wm8350-irq.c155
-rw-r--r--drivers/mfd/wm8994-core.c537
23 files changed, 3557 insertions, 474 deletions
diff --git a/drivers/mfd/88pm8607.c b/drivers/mfd/88pm8607.c
deleted file mode 100644
index 7e3f65907993..000000000000
--- a/drivers/mfd/88pm8607.c
+++ /dev/null
@@ -1,302 +0,0 @@
-/*
- * Base driver for Marvell 88PM8607
- *
- * Copyright (C) 2009 Marvell International Ltd.
- * Haojian Zhuang <haojian.zhuang@marvell.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/platform_device.h>
-#include <linux/i2c.h>
-#include <linux/mfd/core.h>
-#include <linux/mfd/88pm8607.h>
-
-
-#define PM8607_REG_RESOURCE(_start, _end) \
-{ \
- .start = PM8607_##_start, \
- .end = PM8607_##_end, \
- .flags = IORESOURCE_IO, \
-}
-
-static struct resource pm8607_regulator_resources[] = {
- PM8607_REG_RESOURCE(BUCK1, BUCK1),
- PM8607_REG_RESOURCE(BUCK2, BUCK2),
- PM8607_REG_RESOURCE(BUCK3, BUCK3),
- PM8607_REG_RESOURCE(LDO1, LDO1),
- PM8607_REG_RESOURCE(LDO2, LDO2),
- PM8607_REG_RESOURCE(LDO3, LDO3),
- PM8607_REG_RESOURCE(LDO4, LDO4),
- PM8607_REG_RESOURCE(LDO5, LDO5),
- PM8607_REG_RESOURCE(LDO6, LDO6),
- PM8607_REG_RESOURCE(LDO7, LDO7),
- PM8607_REG_RESOURCE(LDO8, LDO8),
- PM8607_REG_RESOURCE(LDO9, LDO9),
- PM8607_REG_RESOURCE(LDO10, LDO10),
- PM8607_REG_RESOURCE(LDO12, LDO12),
- PM8607_REG_RESOURCE(LDO14, LDO14),
-};
-
-#define PM8607_REG_DEVS(_name, _id) \
-{ \
- .name = "88pm8607-" #_name, \
- .num_resources = 1, \
- .resources = &pm8607_regulator_resources[PM8607_ID_##_id], \
-}
-
-static struct mfd_cell pm8607_devs[] = {
- PM8607_REG_DEVS(buck1, BUCK1),
- PM8607_REG_DEVS(buck2, BUCK2),
- PM8607_REG_DEVS(buck3, BUCK3),
- PM8607_REG_DEVS(ldo1, LDO1),
- PM8607_REG_DEVS(ldo2, LDO2),
- PM8607_REG_DEVS(ldo3, LDO3),
- PM8607_REG_DEVS(ldo4, LDO4),
- PM8607_REG_DEVS(ldo5, LDO5),
- PM8607_REG_DEVS(ldo6, LDO6),
- PM8607_REG_DEVS(ldo7, LDO7),
- PM8607_REG_DEVS(ldo8, LDO8),
- PM8607_REG_DEVS(ldo9, LDO9),
- PM8607_REG_DEVS(ldo10, LDO10),
- PM8607_REG_DEVS(ldo12, LDO12),
- PM8607_REG_DEVS(ldo14, LDO14),
-};
-
-static inline int pm8607_read_device(struct pm8607_chip *chip,
- int reg, int bytes, void *dest)
-{
- struct i2c_client *i2c = chip->client;
- unsigned char data;
- int ret;
-
- data = (unsigned char)reg;
- ret = i2c_master_send(i2c, &data, 1);
- if (ret < 0)
- return ret;
-
- ret = i2c_master_recv(i2c, dest, bytes);
- if (ret < 0)
- return ret;
- return 0;
-}
-
-static inline int pm8607_write_device(struct pm8607_chip *chip,
- int reg, int bytes, void *src)
-{
- struct i2c_client *i2c = chip->client;
- unsigned char buf[bytes + 1];
- int ret;
-
- buf[0] = (unsigned char)reg;
- memcpy(&buf[1], src, bytes);
-
- ret = i2c_master_send(i2c, buf, bytes + 1);
- if (ret < 0)
- return ret;
- return 0;
-}
-
-int pm8607_reg_read(struct pm8607_chip *chip, int reg)
-{
- unsigned char data;
- int ret;
-
- mutex_lock(&chip->io_lock);
- ret = chip->read(chip, reg, 1, &data);
- mutex_unlock(&chip->io_lock);
-
- if (ret < 0)
- return ret;
- else
- return (int)data;
-}
-EXPORT_SYMBOL(pm8607_reg_read);
-
-int pm8607_reg_write(struct pm8607_chip *chip, int reg,
- unsigned char data)
-{
- int ret;
-
- mutex_lock(&chip->io_lock);
- ret = chip->write(chip, reg, 1, &data);
- mutex_unlock(&chip->io_lock);
-
- return ret;
-}
-EXPORT_SYMBOL(pm8607_reg_write);
-
-int pm8607_bulk_read(struct pm8607_chip *chip, int reg,
- int count, unsigned char *buf)
-{
- int ret;
-
- mutex_lock(&chip->io_lock);
- ret = chip->read(chip, reg, count, buf);
- mutex_unlock(&chip->io_lock);
-
- return ret;
-}
-EXPORT_SYMBOL(pm8607_bulk_read);
-
-int pm8607_bulk_write(struct pm8607_chip *chip, int reg,
- int count, unsigned char *buf)
-{
- int ret;
-
- mutex_lock(&chip->io_lock);
- ret = chip->write(chip, reg, count, buf);
- mutex_unlock(&chip->io_lock);
-
- return ret;
-}
-EXPORT_SYMBOL(pm8607_bulk_write);
-
-int pm8607_set_bits(struct pm8607_chip *chip, int reg,
- unsigned char mask, unsigned char data)
-{
- unsigned char value;
- int ret;
-
- mutex_lock(&chip->io_lock);
- ret = chip->read(chip, reg, 1, &value);
- if (ret < 0)
- goto out;
- value &= ~mask;
- value |= data;
- ret = chip->write(chip, reg, 1, &value);
-out:
- mutex_unlock(&chip->io_lock);
- return ret;
-}
-EXPORT_SYMBOL(pm8607_set_bits);
-
-
-static const struct i2c_device_id pm8607_id_table[] = {
- { "88PM8607", 0 },
- {}
-};
-MODULE_DEVICE_TABLE(i2c, pm8607_id_table);
-
-
-static int __devinit pm8607_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
-{
- struct pm8607_platform_data *pdata = client->dev.platform_data;
- struct pm8607_chip *chip;
- int i, count;
- int ret;
-
- chip = kzalloc(sizeof(struct pm8607_chip), GFP_KERNEL);
- if (chip == NULL)
- return -ENOMEM;
-
- chip->client = client;
- chip->dev = &client->dev;
- chip->read = pm8607_read_device;
- chip->write = pm8607_write_device;
- i2c_set_clientdata(client, chip);
-
- mutex_init(&chip->io_lock);
- dev_set_drvdata(chip->dev, chip);
-
- ret = pm8607_reg_read(chip, PM8607_CHIP_ID);
- if (ret < 0) {
- dev_err(chip->dev, "Failed to read CHIP ID: %d\n", ret);
- goto out;
- }
- if ((ret & CHIP_ID_MASK) == CHIP_ID)
- dev_info(chip->dev, "Marvell 88PM8607 (ID: %02x) detected\n",
- ret);
- else {
- dev_err(chip->dev, "Failed to detect Marvell 88PM8607. "
- "Chip ID: %02x\n", ret);
- goto out;
- }
- chip->chip_id = ret;
-
- ret = pm8607_reg_read(chip, PM8607_BUCK3);
- if (ret < 0) {
- dev_err(chip->dev, "Failed to read BUCK3 register: %d\n", ret);
- goto out;
- }
- if (ret & PM8607_BUCK3_DOUBLE)
- chip->buck3_double = 1;
-
- ret = pm8607_reg_read(chip, PM8607_MISC1);
- if (ret < 0) {
- dev_err(chip->dev, "Failed to read MISC1 register: %d\n", ret);
- goto out;
- }
- if (pdata->i2c_port == PI2C_PORT)
- ret |= PM8607_MISC1_PI2C;
- else
- ret &= ~PM8607_MISC1_PI2C;
- ret = pm8607_reg_write(chip, PM8607_MISC1, ret);
- if (ret < 0) {
- dev_err(chip->dev, "Failed to write MISC1 register: %d\n", ret);
- goto out;
- }
-
-
- count = ARRAY_SIZE(pm8607_devs);
- for (i = 0; i < count; i++) {
- ret = mfd_add_devices(chip->dev, i, &pm8607_devs[i],
- 1, NULL, 0);
- if (ret != 0) {
- dev_err(chip->dev, "Failed to add subdevs\n");
- goto out;
- }
- }
-
- return 0;
-
-out:
- i2c_set_clientdata(client, NULL);
- kfree(chip);
- return ret;
-}
-
-static int __devexit pm8607_remove(struct i2c_client *client)
-{
- struct pm8607_chip *chip = i2c_get_clientdata(client);
-
- mfd_remove_devices(chip->dev);
- kfree(chip);
- return 0;
-}
-
-static struct i2c_driver pm8607_driver = {
- .driver = {
- .name = "88PM8607",
- .owner = THIS_MODULE,
- },
- .probe = pm8607_probe,
- .remove = __devexit_p(pm8607_remove),
- .id_table = pm8607_id_table,
-};
-
-static int __init pm8607_init(void)
-{
- int ret;
- ret = i2c_add_driver(&pm8607_driver);
- if (ret != 0)
- pr_err("Failed to register 88PM8607 I2C driver: %d\n", ret);
- return ret;
-}
-subsys_initcall(pm8607_init);
-
-static void __exit pm8607_exit(void)
-{
- i2c_del_driver(&pm8607_driver);
-}
-module_exit(pm8607_exit);
-
-MODULE_DESCRIPTION("PMIC Driver for Marvell 88PM8607");
-MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
-MODULE_LICENSE("GPL");
diff --git a/drivers/mfd/88pm860x-core.c b/drivers/mfd/88pm860x-core.c
new file mode 100644
index 000000000000..6a14d2b1ccf0
--- /dev/null
+++ b/drivers/mfd/88pm860x-core.c
@@ -0,0 +1,740 @@
+/*
+ * Base driver for Marvell 88PM8607
+ *
+ * Copyright (C) 2009 Marvell International Ltd.
+ * Haojian Zhuang <haojian.zhuang@marvell.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/88pm860x.h>
+
+#define INT_STATUS_NUM 3
+
+char pm860x_backlight_name[][MFD_NAME_SIZE] = {
+ "backlight-0",
+ "backlight-1",
+ "backlight-2",
+};
+EXPORT_SYMBOL(pm860x_backlight_name);
+
+char pm860x_led_name[][MFD_NAME_SIZE] = {
+ "led0-red",
+ "led0-green",
+ "led0-blue",
+ "led1-red",
+ "led1-green",
+ "led1-blue",
+};
+EXPORT_SYMBOL(pm860x_led_name);
+
+#define PM8606_BACKLIGHT_RESOURCE(_i, _x) \
+{ \
+ .name = pm860x_backlight_name[_i], \
+ .start = PM8606_##_x, \
+ .end = PM8606_##_x, \
+ .flags = IORESOURCE_IO, \
+}
+
+static struct resource backlight_resources[] = {
+ PM8606_BACKLIGHT_RESOURCE(PM8606_BACKLIGHT1, WLED1A),
+ PM8606_BACKLIGHT_RESOURCE(PM8606_BACKLIGHT2, WLED2A),
+ PM8606_BACKLIGHT_RESOURCE(PM8606_BACKLIGHT3, WLED3A),
+};
+
+#define PM8606_BACKLIGHT_DEVS(_i) \
+{ \
+ .name = "88pm860x-backlight", \
+ .num_resources = 1, \
+ .resources = &backlight_resources[_i], \
+ .id = _i, \
+}
+
+static struct mfd_cell backlight_devs[] = {
+ PM8606_BACKLIGHT_DEVS(PM8606_BACKLIGHT1),
+ PM8606_BACKLIGHT_DEVS(PM8606_BACKLIGHT2),
+ PM8606_BACKLIGHT_DEVS(PM8606_BACKLIGHT3),
+};
+
+#define PM8606_LED_RESOURCE(_i, _x) \
+{ \
+ .name = pm860x_led_name[_i], \
+ .start = PM8606_##_x, \
+ .end = PM8606_##_x, \
+ .flags = IORESOURCE_IO, \
+}
+
+static struct resource led_resources[] = {
+ PM8606_LED_RESOURCE(PM8606_LED1_RED, RGB2B),
+ PM8606_LED_RESOURCE(PM8606_LED1_GREEN, RGB2C),
+ PM8606_LED_RESOURCE(PM8606_LED1_BLUE, RGB2D),
+ PM8606_LED_RESOURCE(PM8606_LED2_RED, RGB1B),
+ PM8606_LED_RESOURCE(PM8606_LED2_GREEN, RGB1C),
+ PM8606_LED_RESOURCE(PM8606_LED2_BLUE, RGB1D),
+};
+
+#define PM8606_LED_DEVS(_i) \
+{ \
+ .name = "88pm860x-led", \
+ .num_resources = 1, \
+ .resources = &led_resources[_i], \
+ .id = _i, \
+}
+
+static struct mfd_cell led_devs[] = {
+ PM8606_LED_DEVS(PM8606_LED1_RED),
+ PM8606_LED_DEVS(PM8606_LED1_GREEN),
+ PM8606_LED_DEVS(PM8606_LED1_BLUE),
+ PM8606_LED_DEVS(PM8606_LED2_RED),
+ PM8606_LED_DEVS(PM8606_LED2_GREEN),
+ PM8606_LED_DEVS(PM8606_LED2_BLUE),
+};
+
+static struct resource touch_resources[] = {
+ {
+ .start = PM8607_IRQ_PEN,
+ .end = PM8607_IRQ_PEN,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct mfd_cell touch_devs[] = {
+ {
+ .name = "88pm860x-touch",
+ .num_resources = 1,
+ .resources = &touch_resources[0],
+ },
+};
+
+#define PM8607_REG_RESOURCE(_start, _end) \
+{ \
+ .start = PM8607_##_start, \
+ .end = PM8607_##_end, \
+ .flags = IORESOURCE_IO, \
+}
+
+static struct resource power_supply_resources[] = {
+ {
+ .name = "88pm860x-power",
+ .start = PM8607_IRQ_CHG,
+ .end = PM8607_IRQ_CHG,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct mfd_cell power_devs[] = {
+ {
+ .name = "88pm860x-power",
+ .num_resources = 1,
+ .resources = &power_supply_resources[0],
+ .id = -1,
+ },
+};
+
+static struct resource onkey_resources[] = {
+ {
+ .name = "88pm860x-onkey",
+ .start = PM8607_IRQ_ONKEY,
+ .end = PM8607_IRQ_ONKEY,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct mfd_cell onkey_devs[] = {
+ {
+ .name = "88pm860x-onkey",
+ .num_resources = 1,
+ .resources = &onkey_resources[0],
+ .id = -1,
+ },
+};
+
+static struct resource regulator_resources[] = {
+ PM8607_REG_RESOURCE(BUCK1, BUCK1),
+ PM8607_REG_RESOURCE(BUCK2, BUCK2),
+ PM8607_REG_RESOURCE(BUCK3, BUCK3),
+ PM8607_REG_RESOURCE(LDO1, LDO1),
+ PM8607_REG_RESOURCE(LDO2, LDO2),
+ PM8607_REG_RESOURCE(LDO3, LDO3),
+ PM8607_REG_RESOURCE(LDO4, LDO4),
+ PM8607_REG_RESOURCE(LDO5, LDO5),
+ PM8607_REG_RESOURCE(LDO6, LDO6),
+ PM8607_REG_RESOURCE(LDO7, LDO7),
+ PM8607_REG_RESOURCE(LDO8, LDO8),
+ PM8607_REG_RESOURCE(LDO9, LDO9),
+ PM8607_REG_RESOURCE(LDO10, LDO10),
+ PM8607_REG_RESOURCE(LDO12, LDO12),
+ PM8607_REG_RESOURCE(LDO14, LDO14),
+};
+
+#define PM8607_REG_DEVS(_name, _id) \
+{ \
+ .name = "88pm8607-" #_name, \
+ .num_resources = 1, \
+ .resources = &regulator_resources[PM8607_ID_##_id], \
+ .id = PM8607_ID_##_id, \
+}
+
+static struct mfd_cell regulator_devs[] = {
+ PM8607_REG_DEVS(buck1, BUCK1),
+ PM8607_REG_DEVS(buck2, BUCK2),
+ PM8607_REG_DEVS(buck3, BUCK3),
+ PM8607_REG_DEVS(ldo1, LDO1),
+ PM8607_REG_DEVS(ldo2, LDO2),
+ PM8607_REG_DEVS(ldo3, LDO3),
+ PM8607_REG_DEVS(ldo4, LDO4),
+ PM8607_REG_DEVS(ldo5, LDO5),
+ PM8607_REG_DEVS(ldo6, LDO6),
+ PM8607_REG_DEVS(ldo7, LDO7),
+ PM8607_REG_DEVS(ldo8, LDO8),
+ PM8607_REG_DEVS(ldo9, LDO9),
+ PM8607_REG_DEVS(ldo10, LDO10),
+ PM8607_REG_DEVS(ldo12, LDO12),
+ PM8607_REG_DEVS(ldo14, LDO14),
+};
+
+struct pm860x_irq_data {
+ int reg;
+ int mask_reg;
+ int enable; /* enable or not */
+ int offs; /* bit offset in mask register */
+};
+
+static struct pm860x_irq_data pm860x_irqs[] = {
+ [PM8607_IRQ_ONKEY] = {
+ .reg = PM8607_INT_STATUS1,
+ .mask_reg = PM8607_INT_MASK_1,
+ .offs = 1 << 0,
+ },
+ [PM8607_IRQ_EXTON] = {
+ .reg = PM8607_INT_STATUS1,
+ .mask_reg = PM8607_INT_MASK_1,
+ .offs = 1 << 1,
+ },
+ [PM8607_IRQ_CHG] = {
+ .reg = PM8607_INT_STATUS1,
+ .mask_reg = PM8607_INT_MASK_1,
+ .offs = 1 << 2,
+ },
+ [PM8607_IRQ_BAT] = {
+ .reg = PM8607_INT_STATUS1,
+ .mask_reg = PM8607_INT_MASK_1,
+ .offs = 1 << 3,
+ },
+ [PM8607_IRQ_RTC] = {
+ .reg = PM8607_INT_STATUS1,
+ .mask_reg = PM8607_INT_MASK_1,
+ .offs = 1 << 4,
+ },
+ [PM8607_IRQ_CC] = {
+ .reg = PM8607_INT_STATUS1,
+ .mask_reg = PM8607_INT_MASK_1,
+ .offs = 1 << 5,
+ },
+ [PM8607_IRQ_VBAT] = {
+ .reg = PM8607_INT_STATUS2,
+ .mask_reg = PM8607_INT_MASK_2,
+ .offs = 1 << 0,
+ },
+ [PM8607_IRQ_VCHG] = {
+ .reg = PM8607_INT_STATUS2,
+ .mask_reg = PM8607_INT_MASK_2,
+ .offs = 1 << 1,
+ },
+ [PM8607_IRQ_VSYS] = {
+ .reg = PM8607_INT_STATUS2,
+ .mask_reg = PM8607_INT_MASK_2,
+ .offs = 1 << 2,
+ },
+ [PM8607_IRQ_TINT] = {
+ .reg = PM8607_INT_STATUS2,
+ .mask_reg = PM8607_INT_MASK_2,
+ .offs = 1 << 3,
+ },
+ [PM8607_IRQ_GPADC0] = {
+ .reg = PM8607_INT_STATUS2,
+ .mask_reg = PM8607_INT_MASK_2,
+ .offs = 1 << 4,
+ },
+ [PM8607_IRQ_GPADC1] = {
+ .reg = PM8607_INT_STATUS2,
+ .mask_reg = PM8607_INT_MASK_2,
+ .offs = 1 << 5,
+ },
+ [PM8607_IRQ_GPADC2] = {
+ .reg = PM8607_INT_STATUS2,
+ .mask_reg = PM8607_INT_MASK_2,
+ .offs = 1 << 6,
+ },
+ [PM8607_IRQ_GPADC3] = {
+ .reg = PM8607_INT_STATUS2,
+ .mask_reg = PM8607_INT_MASK_2,
+ .offs = 1 << 7,
+ },
+ [PM8607_IRQ_AUDIO_SHORT] = {
+ .reg = PM8607_INT_STATUS3,
+ .mask_reg = PM8607_INT_MASK_3,
+ .offs = 1 << 0,
+ },
+ [PM8607_IRQ_PEN] = {
+ .reg = PM8607_INT_STATUS3,
+ .mask_reg = PM8607_INT_MASK_3,
+ .offs = 1 << 1,
+ },
+ [PM8607_IRQ_HEADSET] = {
+ .reg = PM8607_INT_STATUS3,
+ .mask_reg = PM8607_INT_MASK_3,
+ .offs = 1 << 2,
+ },
+ [PM8607_IRQ_HOOK] = {
+ .reg = PM8607_INT_STATUS3,
+ .mask_reg = PM8607_INT_MASK_3,
+ .offs = 1 << 3,
+ },
+ [PM8607_IRQ_MICIN] = {
+ .reg = PM8607_INT_STATUS3,
+ .mask_reg = PM8607_INT_MASK_3,
+ .offs = 1 << 4,
+ },
+ [PM8607_IRQ_CHG_FAIL] = {
+ .reg = PM8607_INT_STATUS3,
+ .mask_reg = PM8607_INT_MASK_3,
+ .offs = 1 << 5,
+ },
+ [PM8607_IRQ_CHG_DONE] = {
+ .reg = PM8607_INT_STATUS3,
+ .mask_reg = PM8607_INT_MASK_3,
+ .offs = 1 << 6,
+ },
+ [PM8607_IRQ_CHG_FAULT] = {
+ .reg = PM8607_INT_STATUS3,
+ .mask_reg = PM8607_INT_MASK_3,
+ .offs = 1 << 7,
+ },
+};
+
+static inline struct pm860x_irq_data *irq_to_pm860x(struct pm860x_chip *chip,
+ int irq)
+{
+ return &pm860x_irqs[irq - chip->irq_base];
+}
+
+static irqreturn_t pm860x_irq(int irq, void *data)
+{
+ struct pm860x_chip *chip = data;
+ struct pm860x_irq_data *irq_data;
+ struct i2c_client *i2c;
+ int read_reg = -1, value = 0;
+ int i;
+
+ i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
+ for (i = 0; i < ARRAY_SIZE(pm860x_irqs); i++) {
+ irq_data = &pm860x_irqs[i];
+ if (read_reg != irq_data->reg) {
+ read_reg = irq_data->reg;
+ value = pm860x_reg_read(i2c, irq_data->reg);
+ }
+ if (value & irq_data->enable)
+ handle_nested_irq(chip->irq_base + i);
+ }
+ return IRQ_HANDLED;
+}
+
+static void pm860x_irq_lock(unsigned int irq)
+{
+ struct pm860x_chip *chip = get_irq_chip_data(irq);
+
+ mutex_lock(&chip->irq_lock);
+}
+
+static void pm860x_irq_sync_unlock(unsigned int irq)
+{
+ struct pm860x_chip *chip = get_irq_chip_data(irq);
+ struct pm860x_irq_data *irq_data;
+ struct i2c_client *i2c;
+ static unsigned char cached[3] = {0x0, 0x0, 0x0};
+ unsigned char mask[3];
+ int i;
+
+ i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
+ /* Load cached value. In initial, all IRQs are masked */
+ for (i = 0; i < 3; i++)
+ mask[i] = cached[i];
+ for (i = 0; i < ARRAY_SIZE(pm860x_irqs); i++) {
+ irq_data = &pm860x_irqs[i];
+ switch (irq_data->mask_reg) {
+ case PM8607_INT_MASK_1:
+ mask[0] &= ~irq_data->offs;
+ mask[0] |= irq_data->enable;
+ break;
+ case PM8607_INT_MASK_2:
+ mask[1] &= ~irq_data->offs;
+ mask[1] |= irq_data->enable;
+ break;
+ case PM8607_INT_MASK_3:
+ mask[2] &= ~irq_data->offs;
+ mask[2] |= irq_data->enable;
+ break;
+ default:
+ dev_err(chip->dev, "wrong IRQ\n");
+ break;
+ }
+ }
+ /* update mask into registers */
+ for (i = 0; i < 3; i++) {
+ if (mask[i] != cached[i]) {
+ cached[i] = mask[i];
+ pm860x_reg_write(i2c, PM8607_INT_MASK_1 + i, mask[i]);
+ }
+ }
+
+ mutex_unlock(&chip->irq_lock);
+}
+
+static void pm860x_irq_enable(unsigned int irq)
+{
+ struct pm860x_chip *chip = get_irq_chip_data(irq);
+ pm860x_irqs[irq - chip->irq_base].enable
+ = pm860x_irqs[irq - chip->irq_base].offs;
+}
+
+static void pm860x_irq_disable(unsigned int irq)
+{
+ struct pm860x_chip *chip = get_irq_chip_data(irq);
+ pm860x_irqs[irq - chip->irq_base].enable = 0;
+}
+
+static struct irq_chip pm860x_irq_chip = {
+ .name = "88pm860x",
+ .bus_lock = pm860x_irq_lock,
+ .bus_sync_unlock = pm860x_irq_sync_unlock,
+ .enable = pm860x_irq_enable,
+ .disable = pm860x_irq_disable,
+};
+
+static int __devinit device_gpadc_init(struct pm860x_chip *chip,
+ struct pm860x_platform_data *pdata)
+{
+ struct i2c_client *i2c = (chip->id == CHIP_PM8607) ? chip->client \
+ : chip->companion;
+ int use_gpadc = 0, data, ret;
+
+ /* initialize GPADC without activating it */
+
+ if (pdata && pdata->touch) {
+ /* set GPADC MISC1 register */
+ data = 0;
+ data |= (pdata->touch->gpadc_prebias << 1)
+ & PM8607_GPADC_PREBIAS_MASK;
+ data |= (pdata->touch->slot_cycle << 3)
+ & PM8607_GPADC_SLOT_CYCLE_MASK;
+ data |= (pdata->touch->off_scale << 5)
+ & PM8607_GPADC_OFF_SCALE_MASK;
+ data |= (pdata->touch->sw_cal << 7)
+ & PM8607_GPADC_SW_CAL_MASK;
+ if (data) {
+ ret = pm860x_reg_write(i2c, PM8607_GPADC_MISC1, data);
+ if (ret < 0)
+ goto out;
+ }
+ /* set tsi prebias time */
+ if (pdata->touch->tsi_prebias) {
+ data = pdata->touch->tsi_prebias;
+ ret = pm860x_reg_write(i2c, PM8607_TSI_PREBIAS, data);
+ if (ret < 0)
+ goto out;
+ }
+ /* set prebias & prechg time of pen detect */
+ data = 0;
+ data |= pdata->touch->pen_prebias & PM8607_PD_PREBIAS_MASK;
+ data |= (pdata->touch->pen_prechg << 5)
+ & PM8607_PD_PRECHG_MASK;
+ if (data) {
+ ret = pm860x_reg_write(i2c, PM8607_PD_PREBIAS, data);
+ if (ret < 0)
+ goto out;
+ }
+
+ use_gpadc = 1;
+ }
+
+ /* turn on GPADC */
+ if (use_gpadc) {
+ ret = pm860x_set_bits(i2c, PM8607_GPADC_MISC1,
+ PM8607_GPADC_EN, PM8607_GPADC_EN);
+ }
+out:
+ return ret;
+}
+
+static int __devinit device_irq_init(struct pm860x_chip *chip,
+ struct pm860x_platform_data *pdata)
+{
+ struct i2c_client *i2c = (chip->id == CHIP_PM8607) ? chip->client \
+ : chip->companion;
+ unsigned char status_buf[INT_STATUS_NUM];
+ unsigned long flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT;
+ struct irq_desc *desc;
+ int i, data, mask, ret = -EINVAL;
+ int __irq;
+
+ if (!pdata || !pdata->irq_base) {
+ dev_warn(chip->dev, "No interrupt support on IRQ base\n");
+ return -EINVAL;
+ }
+
+ mask = PM8607_B0_MISC1_INV_INT | PM8607_B0_MISC1_INT_CLEAR
+ | PM8607_B0_MISC1_INT_MASK;
+ data = 0;
+ chip->irq_mode = 0;
+ if (pdata && pdata->irq_mode) {
+ /*
+ * irq_mode defines the way of clearing interrupt. If it's 1,
+ * clear IRQ by write. Otherwise, clear it by read.
+ * This control bit is valid from 88PM8607 B0 steping.
+ */
+ data |= PM8607_B0_MISC1_INT_CLEAR;
+ chip->irq_mode = 1;
+ }
+ ret = pm860x_set_bits(i2c, PM8607_B0_MISC1, mask, data);
+ if (ret < 0)
+ goto out;
+
+ /* mask all IRQs */
+ memset(status_buf, 0, INT_STATUS_NUM);
+ ret = pm860x_bulk_write(i2c, PM8607_INT_MASK_1,
+ INT_STATUS_NUM, status_buf);
+ if (ret < 0)
+ goto out;
+
+ if (chip->irq_mode) {
+ /* clear interrupt status by write */
+ memset(status_buf, 0xFF, INT_STATUS_NUM);
+ ret = pm860x_bulk_write(i2c, PM8607_INT_STATUS1,
+ INT_STATUS_NUM, status_buf);
+ } else {
+ /* clear interrupt status by read */
+ ret = pm860x_bulk_read(i2c, PM8607_INT_STATUS1,
+ INT_STATUS_NUM, status_buf);
+ }
+ if (ret < 0)
+ goto out;
+
+ mutex_init(&chip->irq_lock);
+ chip->irq_base = pdata->irq_base;
+ chip->core_irq = i2c->irq;
+ if (!chip->core_irq)
+ goto out;
+
+ desc = irq_to_desc(chip->core_irq);
+
+ /* register IRQ by genirq */
+ for (i = 0; i < ARRAY_SIZE(pm860x_irqs); i++) {
+ __irq = i + chip->irq_base;
+ set_irq_chip_data(__irq, chip);
+ set_irq_chip_and_handler(__irq, &pm860x_irq_chip,
+ handle_edge_irq);
+ set_irq_nested_thread(__irq, 1);
+#ifdef CONFIG_ARM
+ set_irq_flags(__irq, IRQF_VALID);
+#else
+ set_irq_noprobe(__irq);
+#endif
+ }
+
+ ret = request_threaded_irq(chip->core_irq, NULL, pm860x_irq, flags,
+ "88pm860x", chip);
+ if (ret) {
+ dev_err(chip->dev, "Failed to request IRQ: %d\n", ret);
+ chip->core_irq = 0;
+ }
+
+ return 0;
+out:
+ chip->core_irq = 0;
+ return ret;
+}
+
+static void __devexit device_irq_exit(struct pm860x_chip *chip)
+{
+ if (chip->core_irq)
+ free_irq(chip->core_irq, chip);
+}
+
+static void __devinit device_8606_init(struct pm860x_chip *chip,
+ struct i2c_client *i2c,
+ struct pm860x_platform_data *pdata)
+{
+ int ret;
+
+ if (pdata && pdata->backlight) {
+ ret = mfd_add_devices(chip->dev, 0, &backlight_devs[0],
+ ARRAY_SIZE(backlight_devs),
+ &backlight_resources[0], 0);
+ if (ret < 0) {
+ dev_err(chip->dev, "Failed to add backlight "
+ "subdev\n");
+ goto out_dev;
+ }
+ }
+
+ if (pdata && pdata->led) {
+ ret = mfd_add_devices(chip->dev, 0, &led_devs[0],
+ ARRAY_SIZE(led_devs),
+ &led_resources[0], 0);
+ if (ret < 0) {
+ dev_err(chip->dev, "Failed to add led "
+ "subdev\n");
+ goto out_dev;
+ }
+ }
+ return;
+out_dev:
+ mfd_remove_devices(chip->dev);
+ device_irq_exit(chip);
+}
+
+static void __devinit device_8607_init(struct pm860x_chip *chip,
+ struct i2c_client *i2c,
+ struct pm860x_platform_data *pdata)
+{
+ int data, ret;
+
+ ret = pm860x_reg_read(i2c, PM8607_CHIP_ID);
+ if (ret < 0) {
+ dev_err(chip->dev, "Failed to read CHIP ID: %d\n", ret);
+ goto out;
+ }
+ if ((ret & PM8607_VERSION_MASK) == PM8607_VERSION)
+ dev_info(chip->dev, "Marvell 88PM8607 (ID: %02x) detected\n",
+ ret);
+ else {
+ dev_err(chip->dev, "Failed to detect Marvell 88PM8607. "
+ "Chip ID: %02x\n", ret);
+ goto out;
+ }
+
+ ret = pm860x_reg_read(i2c, PM8607_BUCK3);
+ if (ret < 0) {
+ dev_err(chip->dev, "Failed to read BUCK3 register: %d\n", ret);
+ goto out;
+ }
+ if (ret & PM8607_BUCK3_DOUBLE)
+ chip->buck3_double = 1;
+
+ ret = pm860x_reg_read(i2c, PM8607_B0_MISC1);
+ if (ret < 0) {
+ dev_err(chip->dev, "Failed to read MISC1 register: %d\n", ret);
+ goto out;
+ }
+
+ if (pdata && (pdata->i2c_port == PI2C_PORT))
+ data = PM8607_B0_MISC1_PI2C;
+ else
+ data = 0;
+ ret = pm860x_set_bits(i2c, PM8607_B0_MISC1, PM8607_B0_MISC1_PI2C, data);
+ if (ret < 0) {
+ dev_err(chip->dev, "Failed to access MISC1:%d\n", ret);
+ goto out;
+ }
+
+ ret = device_gpadc_init(chip, pdata);
+ if (ret < 0)
+ goto out;
+
+ ret = device_irq_init(chip, pdata);
+ if (ret < 0)
+ goto out;
+
+ ret = mfd_add_devices(chip->dev, 0, &regulator_devs[0],
+ ARRAY_SIZE(regulator_devs),
+ &regulator_resources[0], 0);
+ if (ret < 0) {
+ dev_err(chip->dev, "Failed to add regulator subdev\n");
+ goto out_dev;
+ }
+
+ if (pdata && pdata->touch) {
+ ret = mfd_add_devices(chip->dev, 0, &touch_devs[0],
+ ARRAY_SIZE(touch_devs),
+ &touch_resources[0], 0);
+ if (ret < 0) {
+ dev_err(chip->dev, "Failed to add touch "
+ "subdev\n");
+ goto out_dev;
+ }
+ }
+
+ if (pdata && pdata->power) {
+ ret = mfd_add_devices(chip->dev, 0, &power_devs[0],
+ ARRAY_SIZE(power_devs),
+ &power_supply_resources[0], 0);
+ if (ret < 0) {
+ dev_err(chip->dev, "Failed to add power supply "
+ "subdev\n");
+ goto out_dev;
+ }
+ }
+
+ ret = mfd_add_devices(chip->dev, 0, &onkey_devs[0],
+ ARRAY_SIZE(onkey_devs),
+ &onkey_resources[0], 0);
+ if (ret < 0) {
+ dev_err(chip->dev, "Failed to add onkey subdev\n");
+ goto out_dev;
+ }
+
+ return;
+out_dev:
+ mfd_remove_devices(chip->dev);
+ device_irq_exit(chip);
+out:
+ return;
+}
+
+int pm860x_device_init(struct pm860x_chip *chip,
+ struct pm860x_platform_data *pdata)
+{
+ chip->core_irq = 0;
+
+ switch (chip->id) {
+ case CHIP_PM8606:
+ device_8606_init(chip, chip->client, pdata);
+ break;
+ case CHIP_PM8607:
+ device_8607_init(chip, chip->client, pdata);
+ break;
+ }
+
+ if (chip->companion) {
+ switch (chip->id) {
+ case CHIP_PM8607:
+ device_8606_init(chip, chip->companion, pdata);
+ break;
+ case CHIP_PM8606:
+ device_8607_init(chip, chip->companion, pdata);
+ break;
+ }
+ }
+
+ return 0;
+}
+
+void pm860x_device_exit(struct pm860x_chip *chip)
+{
+ device_irq_exit(chip);
+ mfd_remove_devices(chip->dev);
+}
+
+MODULE_DESCRIPTION("PMIC Driver for Marvell 88PM860x");
+MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mfd/88pm860x-i2c.c b/drivers/mfd/88pm860x-i2c.c
new file mode 100644
index 000000000000..c37e12bf3004
--- /dev/null
+++ b/drivers/mfd/88pm860x-i2c.c
@@ -0,0 +1,236 @@
+/*
+ * I2C driver for Marvell 88PM860x
+ *
+ * Copyright (C) 2009 Marvell International Ltd.
+ * Haojian Zhuang <haojian.zhuang@marvell.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/i2c.h>
+#include <linux/mfd/88pm860x.h>
+
+static inline int pm860x_read_device(struct i2c_client *i2c,
+ int reg, int bytes, void *dest)
+{
+ unsigned char data;
+ int ret;
+
+ data = (unsigned char)reg;
+ ret = i2c_master_send(i2c, &data, 1);
+ if (ret < 0)
+ return ret;
+
+ ret = i2c_master_recv(i2c, dest, bytes);
+ if (ret < 0)
+ return ret;
+ return 0;
+}
+
+static inline int pm860x_write_device(struct i2c_client *i2c,
+ int reg, int bytes, void *src)
+{
+ unsigned char buf[bytes + 1];
+ int ret;
+
+ buf[0] = (unsigned char)reg;
+ memcpy(&buf[1], src, bytes);
+
+ ret = i2c_master_send(i2c, buf, bytes + 1);
+ if (ret < 0)
+ return ret;
+ return 0;
+}
+
+int pm860x_reg_read(struct i2c_client *i2c, int reg)
+{
+ struct pm860x_chip *chip = i2c_get_clientdata(i2c);
+ unsigned char data;
+ int ret;
+
+ mutex_lock(&chip->io_lock);
+ ret = pm860x_read_device(i2c, reg, 1, &data);
+ mutex_unlock(&chip->io_lock);
+
+ if (ret < 0)
+ return ret;
+ else
+ return (int)data;
+}
+EXPORT_SYMBOL(pm860x_reg_read);
+
+int pm860x_reg_write(struct i2c_client *i2c, int reg,
+ unsigned char data)
+{
+ struct pm860x_chip *chip = i2c_get_clientdata(i2c);
+ int ret;
+
+ mutex_lock(&chip->io_lock);
+ ret = pm860x_write_device(i2c, reg, 1, &data);
+ mutex_unlock(&chip->io_lock);
+
+ return ret;
+}
+EXPORT_SYMBOL(pm860x_reg_write);
+
+int pm860x_bulk_read(struct i2c_client *i2c, int reg,
+ int count, unsigned char *buf)
+{
+ struct pm860x_chip *chip = i2c_get_clientdata(i2c);
+ int ret;
+
+ mutex_lock(&chip->io_lock);
+ ret = pm860x_read_device(i2c, reg, count, buf);
+ mutex_unlock(&chip->io_lock);
+
+ return ret;
+}
+EXPORT_SYMBOL(pm860x_bulk_read);
+
+int pm860x_bulk_write(struct i2c_client *i2c, int reg,
+ int count, unsigned char *buf)
+{
+ struct pm860x_chip *chip = i2c_get_clientdata(i2c);
+ int ret;
+
+ mutex_lock(&chip->io_lock);
+ ret = pm860x_write_device(i2c, reg, count, buf);
+ mutex_unlock(&chip->io_lock);
+
+ return ret;
+}
+EXPORT_SYMBOL(pm860x_bulk_write);
+
+int pm860x_set_bits(struct i2c_client *i2c, int reg,
+ unsigned char mask, unsigned char data)
+{
+ struct pm860x_chip *chip = i2c_get_clientdata(i2c);
+ unsigned char value;
+ int ret;
+
+ mutex_lock(&chip->io_lock);
+ ret = pm860x_read_device(i2c, reg, 1, &value);
+ if (ret < 0)
+ goto out;
+ value &= ~mask;
+ value |= data;
+ ret = pm860x_write_device(i2c, reg, 1, &value);
+out:
+ mutex_unlock(&chip->io_lock);
+ return ret;
+}
+EXPORT_SYMBOL(pm860x_set_bits);
+
+
+static const struct i2c_device_id pm860x_id_table[] = {
+ { "88PM860x", 0 },
+ {}
+};
+MODULE_DEVICE_TABLE(i2c, pm860x_id_table);
+
+static int verify_addr(struct i2c_client *i2c)
+{
+ unsigned short addr_8607[] = {0x30, 0x34};
+ unsigned short addr_8606[] = {0x10, 0x11};
+ int size, i;
+
+ if (i2c == NULL)
+ return 0;
+ size = ARRAY_SIZE(addr_8606);
+ for (i = 0; i < size; i++) {
+ if (i2c->addr == *(addr_8606 + i))
+ return CHIP_PM8606;
+ }
+ size = ARRAY_SIZE(addr_8607);
+ for (i = 0; i < size; i++) {
+ if (i2c->addr == *(addr_8607 + i))
+ return CHIP_PM8607;
+ }
+ return 0;
+}
+
+static int __devinit pm860x_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct pm860x_platform_data *pdata = client->dev.platform_data;
+ struct pm860x_chip *chip;
+
+ if (!pdata) {
+ pr_info("No platform data in %s!\n", __func__);
+ return -EINVAL;
+ }
+
+ chip = kzalloc(sizeof(struct pm860x_chip), GFP_KERNEL);
+ if (chip == NULL)
+ return -ENOMEM;
+
+ chip->id = verify_addr(client);
+ chip->client = client;
+ i2c_set_clientdata(client, chip);
+ chip->dev = &client->dev;
+ mutex_init(&chip->io_lock);
+ dev_set_drvdata(chip->dev, chip);
+
+ /*
+ * Both client and companion client shares same platform driver.
+ * Driver distinguishes them by pdata->companion_addr.
+ * pdata->companion_addr is only assigned if companion chip exists.
+ * At the same time, the companion_addr shouldn't equal to client
+ * address.
+ */
+ if (pdata->companion_addr && (pdata->companion_addr != client->addr)) {
+ chip->companion_addr = pdata->companion_addr;
+ chip->companion = i2c_new_dummy(chip->client->adapter,
+ chip->companion_addr);
+ i2c_set_clientdata(chip->companion, chip);
+ }
+
+ pm860x_device_init(chip, pdata);
+ return 0;
+}
+
+static int __devexit pm860x_remove(struct i2c_client *client)
+{
+ struct pm860x_chip *chip = i2c_get_clientdata(client);
+
+ pm860x_device_exit(chip);
+ i2c_unregister_device(chip->companion);
+ i2c_set_clientdata(chip->companion, NULL);
+ i2c_set_clientdata(chip->client, NULL);
+ kfree(chip);
+ return 0;
+}
+
+static struct i2c_driver pm860x_driver = {
+ .driver = {
+ .name = "88PM860x",
+ .owner = THIS_MODULE,
+ },
+ .probe = pm860x_probe,
+ .remove = __devexit_p(pm860x_remove),
+ .id_table = pm860x_id_table,
+};
+
+static int __init pm860x_i2c_init(void)
+{
+ int ret;
+ ret = i2c_add_driver(&pm860x_driver);
+ if (ret != 0)
+ pr_err("Failed to register 88PM860x I2C driver: %d\n", ret);
+ return ret;
+}
+subsys_initcall(pm860x_i2c_init);
+
+static void __exit pm860x_i2c_exit(void)
+{
+ i2c_del_driver(&pm860x_driver);
+}
+module_exit(pm860x_i2c_exit);
+
+MODULE_DESCRIPTION("I2C Driver for Marvell 88PM860x");
+MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index b670d10d5c92..951fa9b93fbe 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -9,6 +9,16 @@ config MFD_CORE
tristate
default n
+config MFD_88PM860X
+ bool "Support Marvell 88PM8606/88PM8607"
+ depends on I2C=y
+ select MFD_CORE
+ help
+ This supports for Marvell 88PM8606/88PM8607 Power Management IC.
+ This includes the I2C driver and the core APIs _only_, you have to
+ select individual components like voltage regulators, RTC and
+ battery-charger under the corresponding menus.
+
config MFD_SM501
tristate "Support for Silicon Motion SM501"
---help---
@@ -37,7 +47,7 @@ config MFD_ASIC3
config MFD_SH_MOBILE_SDHI
bool "Support for SuperH Mobile SDHI"
- depends on SUPERH
+ depends on SUPERH || ARCH_SHMOBILE
select MFD_CORE
---help---
This driver supports the SDHI hardware block found in many
@@ -68,6 +78,15 @@ config HTC_PASIC3
HTC Magician devices, respectively. Actual functionality is
handled by the leds-pasic3 and ds1wm drivers.
+config HTC_I2CPLD
+ bool "HTC I2C PLD chip support"
+ depends on I2C=y && GPIOLIB
+ help
+ If you say yes here you get support for the supposed CPLD
+ found on omap850 HTC devices like the HTC Wizard and HTC Herald.
+ This device provides input and output GPIOs through an I2C
+ interface to one or more sub-chips.
+
config UCB1400_CORE
tristate "Philips UCB1400 Core driver"
depends on AC97_BUS
@@ -184,6 +203,16 @@ config PMIC_ADP5520
individual components like LCD backlight, LEDs, GPIOs and Kepad
under the corresponding menus.
+config MFD_MAX8925
+ bool "Maxim Semiconductor MAX8925 PMIC Support"
+ depends on I2C=y
+ select MFD_CORE
+ help
+ Say yes here to support for Maxim Semiconductor MAX8925. This is
+ a Power Management IC. This driver provies common support for
+ accessing the device, additional drivers must be enabled in order
+ to use the functionality of the device.
+
config MFD_WM8400
tristate "Support Wolfson Microelectronics WM8400"
select MFD_CORE
@@ -205,7 +234,7 @@ config MFD_WM831X
functionality of the device.
config MFD_WM8350
- tristate
+ bool
config MFD_WM8350_CONFIG_MODE_0
bool
@@ -256,9 +285,9 @@ config MFD_WM8352_CONFIG_MODE_3
depends on MFD_WM8350
config MFD_WM8350_I2C
- tristate "Support Wolfson Microelectronics WM8350 with I2C"
+ bool "Support Wolfson Microelectronics WM8350 with I2C"
select MFD_WM8350
- depends on I2C
+ depends on I2C=y
help
The WM8350 is an integrated audio and power management
subsystem with watchdog and RTC functionality for embedded
@@ -266,6 +295,18 @@ config MFD_WM8350_I2C
I2C as the control interface. Additional options must be
selected to enable support for the functionality of the chip.
+config MFD_WM8994
+ tristate "Support Wolfson Microelectronics WM8994"
+ select MFD_CORE
+ depends on I2C
+ help
+ The WM8994 is a highly integrated hi-fi CODEC designed for
+ smartphone applicatiosn. As well as audio functionality it
+ has on board GPIO and regulator functionality which is
+ supported via the relevant subsystems. This driver provides
+ core support for the WM8994, in order to use the actual
+ functionaltiy of the device other drivers must be enabled.
+
config MFD_PCF50633
tristate "Support for NXP PCF50633"
depends on I2C
@@ -300,8 +341,8 @@ config PCF50633_GPIO
the PCF50633 chip.
config AB3100_CORE
- tristate "ST-Ericsson AB3100 Mixed Signal Circuit core functions"
- depends on I2C
+ bool "ST-Ericsson AB3100 Mixed Signal Circuit core functions"
+ depends on I2C=y
default y if ARCH_U300
help
Select this to enable the AB3100 Mixed Signal IC core
@@ -329,16 +370,6 @@ config EZX_PCAP
This enables the PCAP ASIC present on EZX Phones. This is
needed for MMC, TouchScreen, Sound, USB, etc..
-config MFD_88PM8607
- bool "Support Marvell 88PM8607"
- depends on I2C=y
- select MFD_CORE
- help
- This supports for Marvell 88PM8607 Power Management IC. This includes
- the I2C driver and the core APIs _only_, you have to select
- individual components like voltage regulators, RTC and
- battery-charger under the corresponding menus.
-
config AB4500_CORE
tristate "ST-Ericsson's AB4500 Mixed Signal Power management chip"
depends on SPI
@@ -358,6 +389,15 @@ config MFD_TIMBERDALE
The timberdale FPGA can be found on the Intel Atom development board
for in-vehicle infontainment, called Russellville.
+
+config LPC_SCH
+ tristate "Intel SCH LPC"
+ depends on PCI
+ select MFD_CORE
+ help
+ LPC bridge function of the Intel SCH provides support for
+ System Management Bus and General Purpose I/O.
+
endmenu
menu "Multimedia Capabilities Port drivers"
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 78295d6a75f7..22715add99a7 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -2,12 +2,15 @@
# Makefile for multifunction miscellaneous devices
#
+88pm860x-objs := 88pm860x-core.o 88pm860x-i2c.o
+obj-$(CONFIG_MFD_88PM860X) += 88pm860x.o
obj-$(CONFIG_MFD_SM501) += sm501.o
obj-$(CONFIG_MFD_ASIC3) += asic3.o tmio_core.o
obj-$(CONFIG_MFD_SH_MOBILE_SDHI) += sh_mobile_sdhi.o
obj-$(CONFIG_HTC_EGPIO) += htc-egpio.o
obj-$(CONFIG_HTC_PASIC3) += htc-pasic3.o
+obj-$(CONFIG_HTC_I2CPLD) += htc-i2cpld.o
obj-$(CONFIG_MFD_DM355EVM_MSP) += dm355evm_msp.o
@@ -22,6 +25,7 @@ wm8350-objs := wm8350-core.o wm8350-regmap.o wm8350-gpio.o
wm8350-objs += wm8350-irq.o
obj-$(CONFIG_MFD_WM8350) += wm8350.o
obj-$(CONFIG_MFD_WM8350_I2C) += wm8350-i2c.o
+obj-$(CONFIG_MFD_WM8994) += wm8994-core.o
obj-$(CONFIG_TPS65010) += tps65010.o
obj-$(CONFIG_MENELAUS) += menelaus.o
@@ -47,6 +51,8 @@ endif
obj-$(CONFIG_UCB1400_CORE) += ucb1400_core.o
obj-$(CONFIG_PMIC_DA903X) += da903x.o
+max8925-objs := max8925-core.o max8925-i2c.o
+obj-$(CONFIG_MFD_MAX8925) += max8925.o
obj-$(CONFIG_MFD_PCF50633) += pcf50633-core.o
obj-$(CONFIG_PCF50633_ADC) += pcf50633-adc.o
@@ -55,5 +61,5 @@ obj-$(CONFIG_AB3100_CORE) += ab3100-core.o
obj-$(CONFIG_AB3100_OTP) += ab3100-otp.o
obj-$(CONFIG_AB4500_CORE) += ab4500-core.o
obj-$(CONFIG_MFD_TIMBERDALE) += timberdale.o
-obj-$(CONFIG_MFD_88PM8607) += 88pm8607.o
obj-$(CONFIG_PMIC_ADP5520) += adp5520.o
+obj-$(CONFIG_LPC_SCH) += lpc_sch.o \ No newline at end of file
diff --git a/drivers/mfd/ab3100-core.c b/drivers/mfd/ab3100-core.c
index fd42a80e7bf9..a2ce3b6af4a2 100644
--- a/drivers/mfd/ab3100-core.c
+++ b/drivers/mfd/ab3100-core.c
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2007-2009 ST-Ericsson
+ * Copyright (C) 2007-2010 ST-Ericsson
* License terms: GNU General Public License (GPL) version 2
* Low-level core for exclusive access to the AB3100 IC on the I2C bus
* and some basic chip-configuration.
@@ -14,6 +14,7 @@
#include <linux/platform_device.h>
#include <linux/device.h>
#include <linux/interrupt.h>
+#include <linux/random.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/uaccess.h>
@@ -365,18 +366,23 @@ int ab3100_event_registers_startup_state_get(struct ab3100 *ab3100,
}
EXPORT_SYMBOL(ab3100_event_registers_startup_state_get);
-/* Interrupt handling worker */
-static void ab3100_work(struct work_struct *work)
+/*
+ * This is a threaded interrupt handler so we can make some
+ * I2C calls etc.
+ */
+static irqreturn_t ab3100_irq_handler(int irq, void *data)
{
- struct ab3100 *ab3100 = container_of(work, struct ab3100, work);
+ struct ab3100 *ab3100 = data;
u8 event_regs[3];
u32 fatevent;
int err;
+ add_interrupt_randomness(irq);
+
err = ab3100_get_register_page_interruptible(ab3100, AB3100_EVENTA1,
event_regs, 3);
if (err)
- goto err_event_wq;
+ goto err_event;
fatevent = (event_regs[0] << 16) |
(event_regs[1] << 8) |
@@ -398,29 +404,11 @@ static void ab3100_work(struct work_struct *work)
dev_dbg(ab3100->dev,
"IRQ Event: 0x%08x\n", fatevent);
- /* By now the IRQ should be acked and deasserted so enable it again */
- enable_irq(ab3100->i2c_client->irq);
- return;
+ return IRQ_HANDLED;
- err_event_wq:
+ err_event:
dev_dbg(ab3100->dev,
- "error in event workqueue\n");
- /* Enable the IRQ anyway, what choice do we have? */
- enable_irq(ab3100->i2c_client->irq);
- return;
-}
-
-static irqreturn_t ab3100_irq_handler(int irq, void *data)
-{
- struct ab3100 *ab3100 = data;
- /*
- * Disable the IRQ and dispatch a worker to handle the
- * event. Since the chip resides on I2C this is slow
- * stuff and we will re-enable the interrupts once th
- * worker has finished.
- */
- disable_irq_nosync(irq);
- schedule_work(&ab3100->work);
+ "error reading event status\n");
return IRQ_HANDLED;
}
@@ -735,10 +723,7 @@ static struct platform_device ab3100_##devname##_device = { \
.id = -1, \
}
-/*
- * This lists all the subdevices and corresponding register
- * ranges.
- */
+/* This lists all the subdevices */
AB3100_DEVICE(dac, "ab3100-dac");
AB3100_DEVICE(leds, "ab3100-leds");
AB3100_DEVICE(power, "ab3100-power");
@@ -904,12 +889,11 @@ static int __init ab3100_probe(struct i2c_client *client,
if (err)
goto exit_no_setup;
- INIT_WORK(&ab3100->work, ab3100_work);
-
+ err = request_threaded_irq(client->irq, NULL, ab3100_irq_handler,
+ IRQF_ONESHOT, "ab3100-core", ab3100);
/* This real unpredictable IRQ is of course sampled for entropy */
- err = request_irq(client->irq, ab3100_irq_handler,
- IRQF_DISABLED | IRQF_SAMPLE_RANDOM,
- "AB3100 IRQ", ab3100);
+ rand_initialize_irq(client->irq);
+
if (err)
goto exit_no_irq;
diff --git a/drivers/mfd/ab3100-otp.c b/drivers/mfd/ab3100-otp.c
index 0499b2031a2c..b603469dff69 100644
--- a/drivers/mfd/ab3100-otp.c
+++ b/drivers/mfd/ab3100-otp.c
@@ -13,6 +13,7 @@
#include <linux/platform_device.h>
#include <linux/mfd/ab3100.h>
#include <linux/debugfs.h>
+#include <linux/seq_file.h>
/* The OTP registers */
#define AB3100_OTP0 0xb0
@@ -95,11 +96,10 @@ static int __init ab3100_otp_read(struct ab3100_otp *otp)
* This is a simple debugfs human-readable file that dumps out
* the contents of the OTP.
*/
-#ifdef CONFIG_DEBUGFS
-static int show_otp(struct seq_file *s, void *v)
+#ifdef CONFIG_DEBUG_FS
+static int ab3100_show_otp(struct seq_file *s, void *v)
{
struct ab3100_otp *otp = s->private;
- int err;
seq_printf(s, "OTP is %s\n", otp->locked ? "LOCKED" : "UNLOCKED");
seq_printf(s, "OTP clock switch startup is %uHz\n", otp->freq);
@@ -113,7 +113,7 @@ static int show_otp(struct seq_file *s, void *v)
static int ab3100_otp_open(struct inode *inode, struct file *file)
{
- return single_open(file, ab3100_otp_show, inode->i_private);
+ return single_open(file, ab3100_show_otp, inode->i_private);
}
static const struct file_operations ab3100_otp_operations = {
@@ -131,13 +131,14 @@ static int __init ab3100_otp_init_debugfs(struct device *dev,
&ab3100_otp_operations);
if (!otp->debugfs) {
dev_err(dev, "AB3100 debugfs OTP file registration failed!\n");
- return err;
+ return -ENOENT;
}
+ return 0;
}
static void __exit ab3100_otp_exit_debugfs(struct ab3100_otp *otp)
{
- debugfs_remove_file(otp->debugfs);
+ debugfs_remove(otp->debugfs);
}
#else
/* Compile this out if debugfs not selected */
diff --git a/drivers/mfd/htc-i2cpld.c b/drivers/mfd/htc-i2cpld.c
new file mode 100644
index 000000000000..37b9fdab4f36
--- /dev/null
+++ b/drivers/mfd/htc-i2cpld.c
@@ -0,0 +1,710 @@
+/*
+ * htc-i2cpld.c
+ * Chip driver for an unknown CPLD chip found on omap850 HTC devices like
+ * the HTC Wizard and HTC Herald.
+ * The cpld is located on the i2c bus and acts as an input/output GPIO
+ * extender.
+ *
+ * Copyright (C) 2009 Cory Maccarrone <darkstar6262@gmail.com>
+ *
+ * Based on work done in the linwizard project
+ * Copyright (C) 2008-2009 Angelo Arrifano <miknix@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.
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/i2c.h>
+#include <linux/irq.h>
+#include <linux/spinlock.h>
+#include <linux/htcpld.h>
+#include <linux/gpio.h>
+
+struct htcpld_chip {
+ spinlock_t lock;
+
+ /* chip info */
+ u8 reset;
+ u8 addr;
+ struct device *dev;
+ struct i2c_client *client;
+
+ /* Output details */
+ u8 cache_out;
+ struct gpio_chip chip_out;
+
+ /* Input details */
+ u8 cache_in;
+ struct gpio_chip chip_in;
+
+ u16 irqs_enabled;
+ uint irq_start;
+ int nirqs;
+
+ /*
+ * Work structure to allow for setting values outside of any
+ * possible interrupt context
+ */
+ struct work_struct set_val_work;
+};
+
+struct htcpld_data {
+ /* irq info */
+ u16 irqs_enabled;
+ uint irq_start;
+ int nirqs;
+ uint chained_irq;
+ unsigned int int_reset_gpio_hi;
+ unsigned int int_reset_gpio_lo;
+
+ /* htcpld info */
+ struct htcpld_chip *chip;
+ unsigned int nchips;
+};
+
+/* There does not appear to be a way to proactively mask interrupts
+ * on the htcpld chip itself. So, we simply ignore interrupts that
+ * aren't desired. */
+static void htcpld_mask(unsigned int irq)
+{
+ struct htcpld_chip *chip = get_irq_chip_data(irq);
+ chip->irqs_enabled &= ~(1 << (irq - chip->irq_start));
+ pr_debug("HTCPLD mask %d %04x\n", irq, chip->irqs_enabled);
+}
+static void htcpld_unmask(unsigned int irq)
+{
+ struct htcpld_chip *chip = get_irq_chip_data(irq);
+ chip->irqs_enabled |= 1 << (irq - chip->irq_start);
+ pr_debug("HTCPLD unmask %d %04x\n", irq, chip->irqs_enabled);
+}
+
+static int htcpld_set_type(unsigned int irq, unsigned int flags)
+{
+ struct irq_desc *d = irq_to_desc(irq);
+
+ if (!d) {
+ pr_err("HTCPLD invalid IRQ: %d\n", irq);
+ return -EINVAL;
+ }
+
+ if (flags & ~IRQ_TYPE_SENSE_MASK)
+ return -EINVAL;
+
+ /* We only allow edge triggering */
+ if (flags & (IRQ_TYPE_LEVEL_LOW|IRQ_TYPE_LEVEL_HIGH))
+ return -EINVAL;
+
+ d->status &= ~IRQ_TYPE_SENSE_MASK;
+ d->status |= flags;
+
+ return 0;
+}
+
+static struct irq_chip htcpld_muxed_chip = {
+ .name = "htcpld",
+ .mask = htcpld_mask,
+ .unmask = htcpld_unmask,
+ .set_type = htcpld_set_type,
+};
+
+/* To properly dispatch IRQ events, we need to read from the
+ * chip. This is an I2C action that could possibly sleep
+ * (which is bad in interrupt context) -- so we use a threaded
+ * interrupt handler to get around that.
+ */
+static irqreturn_t htcpld_handler(int irq, void *dev)
+{
+ struct htcpld_data *htcpld = dev;
+ unsigned int i;
+ unsigned long flags;
+ int irqpin;
+ struct irq_desc *desc;
+
+ if (!htcpld) {
+ pr_debug("htcpld is null in ISR\n");
+ return IRQ_HANDLED;
+ }
+
+ /*
+ * For each chip, do a read of the chip and trigger any interrupts
+ * desired. The interrupts will be triggered from LSB to MSB (i.e.
+ * bit 0 first, then bit 1, etc.)
+ *
+ * For chips that have no interrupt range specified, just skip 'em.
+ */
+ for (i = 0; i < htcpld->nchips; i++) {
+ struct htcpld_chip *chip = &htcpld->chip[i];
+ struct i2c_client *client;
+ int val;
+ unsigned long uval, old_val;
+
+ if (!chip) {
+ pr_debug("chip %d is null in ISR\n", i);
+ continue;
+ }
+
+ if (chip->nirqs == 0)
+ continue;
+
+ client = chip->client;
+ if (!client) {
+ pr_debug("client %d is null in ISR\n", i);
+ continue;
+ }
+
+ /* Scan the chip */
+ val = i2c_smbus_read_byte_data(client, chip->cache_out);
+ if (val < 0) {
+ /* Throw a warning and skip this chip */
+ dev_warn(chip->dev, "Unable to read from chip: %d\n",
+ val);
+ continue;
+ }
+
+ uval = (unsigned long)val;
+
+ spin_lock_irqsave(&chip->lock, flags);
+
+ /* Save away the old value so we can compare it */
+ old_val = chip->cache_in;
+
+ /* Write the new value */
+ chip->cache_in = uval;
+
+ spin_unlock_irqrestore(&chip->lock, flags);
+
+ /*
+ * For each bit in the data (starting at bit 0), trigger
+ * associated interrupts.
+ */
+ for (irqpin = 0; irqpin < chip->nirqs; irqpin++) {
+ unsigned oldb, newb;
+ int flags;
+
+ irq = chip->irq_start + irqpin;
+ desc = irq_to_desc(irq);
+ flags = desc->status;
+
+ /* Run the IRQ handler, but only if the bit value
+ * changed, and the proper flags are set */
+ oldb = (old_val >> irqpin) & 1;
+ newb = (uval >> irqpin) & 1;
+
+ if ((!oldb && newb && (flags & IRQ_TYPE_EDGE_RISING)) ||
+ (oldb && !newb &&
+ (flags & IRQ_TYPE_EDGE_FALLING))) {
+ pr_debug("fire IRQ %d\n", irqpin);
+ desc->handle_irq(irq, desc);
+ }
+ }
+ }
+
+ /*
+ * In order to continue receiving interrupts, the int_reset_gpio must
+ * be asserted.
+ */
+ if (htcpld->int_reset_gpio_hi)
+ gpio_set_value(htcpld->int_reset_gpio_hi, 1);
+ if (htcpld->int_reset_gpio_lo)
+ gpio_set_value(htcpld->int_reset_gpio_lo, 0);
+
+ return IRQ_HANDLED;
+}
+
+/*
+ * The GPIO set routines can be called from interrupt context, especially if,
+ * for example they're attached to the led-gpio framework and a trigger is
+ * enabled. As such, we declared work above in the htcpld_chip structure,
+ * and that work is scheduled in the set routine. The kernel can then run
+ * the I2C functions, which will sleep, in process context.
+ */
+void htcpld_chip_set(struct gpio_chip *chip, unsigned offset, int val)
+{
+ struct i2c_client *client;
+ struct htcpld_chip *chip_data;
+ unsigned long flags;
+
+ chip_data = container_of(chip, struct htcpld_chip, chip_out);
+ if (!chip_data)
+ return;
+
+ client = chip_data->client;
+ if (client == NULL)
+ return;
+
+ spin_lock_irqsave(&chip_data->lock, flags);
+ if (val)
+ chip_data->cache_out |= (1 << offset);
+ else
+ chip_data->cache_out &= ~(1 << offset);
+ spin_unlock_irqrestore(&chip_data->lock, flags);
+
+ schedule_work(&(chip_data->set_val_work));
+}
+
+void htcpld_chip_set_ni(struct work_struct *work)
+{
+ struct htcpld_chip *chip_data;
+ struct i2c_client *client;
+
+ chip_data = container_of(work, struct htcpld_chip, set_val_work);
+ client = chip_data->client;
+ i2c_smbus_read_byte_data(client, chip_data->cache_out);
+}
+
+int htcpld_chip_get(struct gpio_chip *chip, unsigned offset)
+{
+ struct htcpld_chip *chip_data;
+ int val = 0;
+ int is_input = 0;
+
+ /* Try out first */
+ chip_data = container_of(chip, struct htcpld_chip, chip_out);
+ if (!chip_data) {
+ /* Try in */
+ is_input = 1;
+ chip_data = container_of(chip, struct htcpld_chip, chip_in);
+ if (!chip_data)
+ return -EINVAL;
+ }
+
+ /* Determine if this is an input or output GPIO */
+ if (!is_input)
+ /* Use the output cache */
+ val = (chip_data->cache_out >> offset) & 1;
+ else
+ /* Use the input cache */
+ val = (chip_data->cache_in >> offset) & 1;
+
+ if (val)
+ return 1;
+ else
+ return 0;
+}
+
+static int htcpld_direction_output(struct gpio_chip *chip,
+ unsigned offset, int value)
+{
+ htcpld_chip_set(chip, offset, value);
+ return 0;
+}
+
+static int htcpld_direction_input(struct gpio_chip *chip,
+ unsigned offset)
+{
+ /*
+ * No-op: this function can only be called on the input chip.
+ * We do however make sure the offset is within range.
+ */
+ return (offset < chip->ngpio) ? 0 : -EINVAL;
+}
+
+int htcpld_chip_to_irq(struct gpio_chip *chip, unsigned offset)
+{
+ struct htcpld_chip *chip_data;
+
+ chip_data = container_of(chip, struct htcpld_chip, chip_in);
+
+ if (offset < chip_data->nirqs)
+ return chip_data->irq_start + offset;
+ else
+ return -EINVAL;
+}
+
+void htcpld_chip_reset(struct i2c_client *client)
+{
+ struct htcpld_chip *chip_data = i2c_get_clientdata(client);
+ if (!chip_data)
+ return;
+
+ i2c_smbus_read_byte_data(
+ client, (chip_data->cache_out = chip_data->reset));
+}
+
+static int __devinit htcpld_setup_chip_irq(
+ struct platform_device *pdev,
+ int chip_index)
+{
+ struct htcpld_data *htcpld;
+ struct device *dev = &pdev->dev;
+ struct htcpld_core_platform_data *pdata;
+ struct htcpld_chip *chip;
+ struct htcpld_chip_platform_data *plat_chip_data;
+ unsigned int irq, irq_end;
+ int ret = 0;
+
+ /* Get the platform and driver data */
+ pdata = dev->platform_data;
+ htcpld = platform_get_drvdata(pdev);
+ chip = &htcpld->chip[chip_index];
+ plat_chip_data = &pdata->chip[chip_index];
+
+ /* Setup irq handlers */
+ irq_end = chip->irq_start + chip->nirqs;
+ for (irq = chip->irq_start; irq < irq_end; irq++) {
+ set_irq_chip(irq, &htcpld_muxed_chip);
+ set_irq_chip_data(irq, chip);
+ set_irq_handler(irq, handle_simple_irq);
+#ifdef CONFIG_ARM
+ set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
+#else
+ set_irq_probe(irq);
+#endif
+ }
+
+ return ret;
+}
+
+static int __devinit htcpld_register_chip_i2c(
+ struct platform_device *pdev,
+ int chip_index)
+{
+ struct htcpld_data *htcpld;
+ struct device *dev = &pdev->dev;
+ struct htcpld_core_platform_data *pdata;
+ struct htcpld_chip *chip;
+ struct htcpld_chip_platform_data *plat_chip_data;
+ struct i2c_adapter *adapter;
+ struct i2c_client *client;
+ struct i2c_board_info info;
+
+ /* Get the platform and driver data */
+ pdata = dev->platform_data;
+ htcpld = platform_get_drvdata(pdev);
+ chip = &htcpld->chip[chip_index];
+ plat_chip_data = &pdata->chip[chip_index];
+
+ adapter = i2c_get_adapter(pdata->i2c_adapter_id);
+ if (adapter == NULL) {
+ /* Eek, no such I2C adapter! Bail out. */
+ dev_warn(dev, "Chip at i2c address 0x%x: Invalid i2c adapter %d\n",
+ plat_chip_data->addr, pdata->i2c_adapter_id);
+ return -ENODEV;
+ }
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_READ_BYTE_DATA)) {
+ dev_warn(dev, "i2c adapter %d non-functional\n",
+ pdata->i2c_adapter_id);
+ return -EINVAL;
+ }
+
+ memset(&info, 0, sizeof(struct i2c_board_info));
+ info.addr = plat_chip_data->addr;
+ strlcpy(info.type, "htcpld-chip", I2C_NAME_SIZE);
+ info.platform_data = chip;
+
+ /* Add the I2C device. This calls the probe() function. */
+ client = i2c_new_device(adapter, &info);
+ if (!client) {
+ /* I2C device registration failed, contineu with the next */
+ dev_warn(dev, "Unable to add I2C device for 0x%x\n",
+ plat_chip_data->addr);
+ return -ENODEV;
+ }
+
+ i2c_set_clientdata(client, chip);
+ snprintf(client->name, I2C_NAME_SIZE, "Chip_0x%d", client->addr);
+ chip->client = client;
+
+ /* Reset the chip */
+ htcpld_chip_reset(client);
+ chip->cache_in = i2c_smbus_read_byte_data(client, chip->cache_out);
+
+ return 0;
+}
+
+static void __devinit htcpld_unregister_chip_i2c(
+ struct platform_device *pdev,
+ int chip_index)
+{
+ struct htcpld_data *htcpld;
+ struct htcpld_chip *chip;
+
+ /* Get the platform and driver data */
+ htcpld = platform_get_drvdata(pdev);
+ chip = &htcpld->chip[chip_index];
+
+ if (chip->client)
+ i2c_unregister_device(chip->client);
+}
+
+static int __devinit htcpld_register_chip_gpio(
+ struct platform_device *pdev,
+ int chip_index)
+{
+ struct htcpld_data *htcpld;
+ struct device *dev = &pdev->dev;
+ struct htcpld_core_platform_data *pdata;
+ struct htcpld_chip *chip;
+ struct htcpld_chip_platform_data *plat_chip_data;
+ struct gpio_chip *gpio_chip;
+ int ret = 0;
+
+ /* Get the platform and driver data */
+ pdata = dev->platform_data;
+ htcpld = platform_get_drvdata(pdev);
+ chip = &htcpld->chip[chip_index];
+ plat_chip_data = &pdata->chip[chip_index];
+
+ /* Setup the GPIO chips */
+ gpio_chip = &(chip->chip_out);
+ gpio_chip->label = "htcpld-out";
+ gpio_chip->dev = dev;
+ gpio_chip->owner = THIS_MODULE;
+ gpio_chip->get = htcpld_chip_get;
+ gpio_chip->set = htcpld_chip_set;
+ gpio_chip->direction_input = NULL;
+ gpio_chip->direction_output = htcpld_direction_output;
+ gpio_chip->base = plat_chip_data->gpio_out_base;
+ gpio_chip->ngpio = plat_chip_data->num_gpios;
+
+ gpio_chip = &(chip->chip_in);
+ gpio_chip->label = "htcpld-in";
+ gpio_chip->dev = dev;
+ gpio_chip->owner = THIS_MODULE;
+ gpio_chip->get = htcpld_chip_get;
+ gpio_chip->set = NULL;
+ gpio_chip->direction_input = htcpld_direction_input;
+ gpio_chip->direction_output = NULL;
+ gpio_chip->to_irq = htcpld_chip_to_irq;
+ gpio_chip->base = plat_chip_data->gpio_in_base;
+ gpio_chip->ngpio = plat_chip_data->num_gpios;
+
+ /* Add the GPIO chips */
+ ret = gpiochip_add(&(chip->chip_out));
+ if (ret) {
+ dev_warn(dev, "Unable to register output GPIOs for 0x%x: %d\n",
+ plat_chip_data->addr, ret);
+ return ret;
+ }
+
+ ret = gpiochip_add(&(chip->chip_in));
+ if (ret) {
+ int error;
+
+ dev_warn(dev, "Unable to register input GPIOs for 0x%x: %d\n",
+ plat_chip_data->addr, ret);
+
+ error = gpiochip_remove(&(chip->chip_out));
+ if (error)
+ dev_warn(dev, "Error while trying to unregister gpio chip: %d\n", error);
+
+ return ret;
+ }
+
+ return 0;
+}
+
+static int __devinit htcpld_setup_chips(struct platform_device *pdev)
+{
+ struct htcpld_data *htcpld;
+ struct device *dev = &pdev->dev;
+ struct htcpld_core_platform_data *pdata;
+ int i;
+
+ /* Get the platform and driver data */
+ pdata = dev->platform_data;
+ htcpld = platform_get_drvdata(pdev);
+
+ /* Setup each chip's output GPIOs */
+ htcpld->nchips = pdata->num_chip;
+ htcpld->chip = kzalloc(sizeof(struct htcpld_chip) * htcpld->nchips,
+ GFP_KERNEL);
+ if (!htcpld->chip) {
+ dev_warn(dev, "Unable to allocate memory for chips\n");
+ return -ENOMEM;
+ }
+
+ /* Add the chips as best we can */
+ for (i = 0; i < htcpld->nchips; i++) {
+ int ret;
+
+ /* Setup the HTCPLD chips */
+ htcpld->chip[i].reset = pdata->chip[i].reset;
+ htcpld->chip[i].cache_out = pdata->chip[i].reset;
+ htcpld->chip[i].cache_in = 0;
+ htcpld->chip[i].dev = dev;
+ htcpld->chip[i].irq_start = pdata->chip[i].irq_base;
+ htcpld->chip[i].nirqs = pdata->chip[i].num_irqs;
+
+ INIT_WORK(&(htcpld->chip[i].set_val_work), &htcpld_chip_set_ni);
+ spin_lock_init(&(htcpld->chip[i].lock));
+
+ /* Setup the interrupts for the chip */
+ if (htcpld->chained_irq) {
+ ret = htcpld_setup_chip_irq(pdev, i);
+ if (ret)
+ continue;
+ }
+
+ /* Register the chip with I2C */
+ ret = htcpld_register_chip_i2c(pdev, i);
+ if (ret)
+ continue;
+
+
+ /* Register the chips with the GPIO subsystem */
+ ret = htcpld_register_chip_gpio(pdev, i);
+ if (ret) {
+ /* Unregister the chip from i2c and continue */
+ htcpld_unregister_chip_i2c(pdev, i);
+ continue;
+ }
+
+ dev_info(dev, "Registered chip at 0x%x\n", pdata->chip[i].addr);
+ }
+
+ return 0;
+}
+
+static int __devinit htcpld_core_probe(struct platform_device *pdev)
+{
+ struct htcpld_data *htcpld;
+ struct device *dev = &pdev->dev;
+ struct htcpld_core_platform_data *pdata;
+ struct resource *res;
+ int ret = 0;
+
+ if (!dev)
+ return -ENODEV;
+
+ pdata = dev->platform_data;
+ if (!pdata) {
+ dev_warn(dev, "Platform data not found for htcpld core!\n");
+ return -ENXIO;
+ }
+
+ htcpld = kzalloc(sizeof(struct htcpld_data), GFP_KERNEL);
+ if (!htcpld)
+ return -ENOMEM;
+
+ /* Find chained irq */
+ ret = -EINVAL;
+ res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (res) {
+ int flags;
+ htcpld->chained_irq = res->start;
+
+ /* Setup the chained interrupt handler */
+ flags = IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING;
+ ret = request_threaded_irq(htcpld->chained_irq,
+ NULL, htcpld_handler,
+ flags, pdev->name, htcpld);
+ if (ret) {
+ dev_warn(dev, "Unable to setup chained irq handler: %d\n", ret);
+ goto fail;
+ } else
+ device_init_wakeup(dev, 0);
+ }
+
+ /* Set the driver data */
+ platform_set_drvdata(pdev, htcpld);
+
+ /* Setup the htcpld chips */
+ ret = htcpld_setup_chips(pdev);
+ if (ret)
+ goto fail;
+
+ /* Request the GPIO(s) for the int reset and set them up */
+ if (pdata->int_reset_gpio_hi) {
+ ret = gpio_request(pdata->int_reset_gpio_hi, "htcpld-core");
+ if (ret) {
+ /*
+ * If it failed, that sucks, but we can probably
+ * continue on without it.
+ */
+ dev_warn(dev, "Unable to request int_reset_gpio_hi -- interrupts may not work\n");
+ htcpld->int_reset_gpio_hi = 0;
+ } else {
+ htcpld->int_reset_gpio_hi = pdata->int_reset_gpio_hi;
+ gpio_set_value(htcpld->int_reset_gpio_hi, 1);
+ }
+ }
+
+ if (pdata->int_reset_gpio_lo) {
+ ret = gpio_request(pdata->int_reset_gpio_lo, "htcpld-core");
+ if (ret) {
+ /*
+ * If it failed, that sucks, but we can probably
+ * continue on without it.
+ */
+ dev_warn(dev, "Unable to request int_reset_gpio_lo -- interrupts may not work\n");
+ htcpld->int_reset_gpio_lo = 0;
+ } else {
+ htcpld->int_reset_gpio_lo = pdata->int_reset_gpio_lo;
+ gpio_set_value(htcpld->int_reset_gpio_lo, 0);
+ }
+ }
+
+ dev_info(dev, "Initialized successfully\n");
+ return 0;
+
+fail:
+ kfree(htcpld);
+ return ret;
+}
+
+/* The I2C Driver -- used internally */
+static const struct i2c_device_id htcpld_chip_id[] = {
+ { "htcpld-chip", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, htcpld_chip_id);
+
+
+static struct i2c_driver htcpld_chip_driver = {
+ .driver = {
+ .name = "htcpld-chip",
+ },
+ .id_table = htcpld_chip_id,
+};
+
+/* The Core Driver */
+static struct platform_driver htcpld_core_driver = {
+ .driver = {
+ .name = "i2c-htcpld",
+ },
+};
+
+static int __init htcpld_core_init(void)
+{
+ int ret;
+
+ /* Register the I2C Chip driver */
+ ret = i2c_add_driver(&htcpld_chip_driver);
+ if (ret)
+ return ret;
+
+ /* Probe for our chips */
+ return platform_driver_probe(&htcpld_core_driver, htcpld_core_probe);
+}
+
+static void __exit htcpld_core_exit(void)
+{
+ i2c_del_driver(&htcpld_chip_driver);
+ platform_driver_unregister(&htcpld_core_driver);
+}
+
+module_init(htcpld_core_init);
+module_exit(htcpld_core_exit);
+
+MODULE_AUTHOR("Cory Maccarrone <darkstar6262@gmail.com>");
+MODULE_DESCRIPTION("I2C HTC PLD Driver");
+MODULE_LICENSE("GPL");
+
diff --git a/drivers/mfd/lpc_sch.c b/drivers/mfd/lpc_sch.c
new file mode 100644
index 000000000000..51b2f6065a0b
--- /dev/null
+++ b/drivers/mfd/lpc_sch.c
@@ -0,0 +1,133 @@
+/*
+ * lpc_sch.c - LPC interface for Intel Poulsbo SCH
+ *
+ * LPC bridge function of the Intel SCH contains many other
+ * functional units, such as Interrupt controllers, Timers,
+ * Power Management, System Management, GPIO, RTC, and LPC
+ * Configuration Registers.
+ *
+ * Copyright (c) 2010 CompuLab Ltd
+ * Author: Denis Turischev <denis@compulab.co.il>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License 2 as published
+ * by the Free Software Foundation.
+ *
+ * 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; see the file COPYING. If not, write to
+ * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/acpi.h>
+#include <linux/pci.h>
+#include <linux/mfd/core.h>
+
+#define SMBASE 0x40
+#define SMBUS_IO_SIZE 64
+
+#define GPIOBASE 0x44
+#define GPIO_IO_SIZE 64
+
+static struct resource smbus_sch_resource = {
+ .flags = IORESOURCE_IO,
+};
+
+
+static struct resource gpio_sch_resource = {
+ .flags = IORESOURCE_IO,
+};
+
+static struct mfd_cell lpc_sch_cells[] = {
+ {
+ .name = "isch_smbus",
+ .num_resources = 1,
+ .resources = &smbus_sch_resource,
+ },
+ {
+ .name = "sch_gpio",
+ .num_resources = 1,
+ .resources = &gpio_sch_resource,
+ },
+};
+
+static struct pci_device_id lpc_sch_ids[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SCH_LPC) },
+ { 0, }
+};
+MODULE_DEVICE_TABLE(pci, lpc_sch_ids);
+
+static int __devinit lpc_sch_probe(struct pci_dev *dev,
+ const struct pci_device_id *id)
+{
+ unsigned int base_addr_cfg;
+ unsigned short base_addr;
+
+ pci_read_config_dword(dev, SMBASE, &base_addr_cfg);
+ if (!(base_addr_cfg & (1 << 31))) {
+ dev_err(&dev->dev, "Decode of the SMBus I/O range disabled\n");
+ return -ENODEV;
+ }
+ base_addr = (unsigned short)base_addr_cfg;
+ if (base_addr == 0) {
+ dev_err(&dev->dev, "I/O space for SMBus uninitialized\n");
+ return -ENODEV;
+ }
+
+ smbus_sch_resource.start = base_addr;
+ smbus_sch_resource.end = base_addr + SMBUS_IO_SIZE - 1;
+
+ pci_read_config_dword(dev, GPIOBASE, &base_addr_cfg);
+ if (!(base_addr_cfg & (1 << 31))) {
+ dev_err(&dev->dev, "Decode of the GPIO I/O range disabled\n");
+ return -ENODEV;
+ }
+ base_addr = (unsigned short)base_addr_cfg;
+ if (base_addr == 0) {
+ dev_err(&dev->dev, "I/O space for GPIO uninitialized\n");
+ return -ENODEV;
+ }
+
+ gpio_sch_resource.start = base_addr;
+ gpio_sch_resource.end = base_addr + GPIO_IO_SIZE - 1;
+
+ return mfd_add_devices(&dev->dev, -1,
+ lpc_sch_cells, ARRAY_SIZE(lpc_sch_cells), NULL, 0);
+}
+
+static void __devexit lpc_sch_remove(struct pci_dev *dev)
+{
+ mfd_remove_devices(&dev->dev);
+}
+
+static struct pci_driver lpc_sch_driver = {
+ .name = "lpc_sch",
+ .id_table = lpc_sch_ids,
+ .probe = lpc_sch_probe,
+ .remove = __devexit_p(lpc_sch_remove),
+};
+
+static int __init lpc_sch_init(void)
+{
+ return pci_register_driver(&lpc_sch_driver);
+}
+
+static void __exit lpc_sch_exit(void)
+{
+ pci_unregister_driver(&lpc_sch_driver);
+}
+
+module_init(lpc_sch_init);
+module_exit(lpc_sch_exit);
+
+MODULE_AUTHOR("Denis Turischev <denis@compulab.co.il>");
+MODULE_DESCRIPTION("LPC interface for Intel Poulsbo SCH");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mfd/max8925-core.c b/drivers/mfd/max8925-core.c
new file mode 100644
index 000000000000..85d63c04749b
--- /dev/null
+++ b/drivers/mfd/max8925-core.c
@@ -0,0 +1,656 @@
+/*
+ * Base driver for Maxim MAX8925
+ *
+ * Copyright (C) 2009-2010 Marvell International Ltd.
+ * Haojian Zhuang <haojian.zhuang@marvell.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/max8925.h>
+
+static struct resource backlight_resources[] = {
+ {
+ .name = "max8925-backlight",
+ .start = MAX8925_WLED_MODE_CNTL,
+ .end = MAX8925_WLED_CNTL,
+ .flags = IORESOURCE_IO,
+ },
+};
+
+static struct mfd_cell backlight_devs[] = {
+ {
+ .name = "max8925-backlight",
+ .num_resources = 1,
+ .resources = &backlight_resources[0],
+ .id = -1,
+ },
+};
+
+static struct resource touch_resources[] = {
+ {
+ .name = "max8925-tsc",
+ .start = MAX8925_TSC_IRQ,
+ .end = MAX8925_ADC_RES_END,
+ .flags = IORESOURCE_IO,
+ },
+};
+
+static struct mfd_cell touch_devs[] = {
+ {
+ .name = "max8925-touch",
+ .num_resources = 1,
+ .resources = &touch_resources[0],
+ .id = -1,
+ },
+};
+
+static struct resource power_supply_resources[] = {
+ {
+ .name = "max8925-power",
+ .start = MAX8925_CHG_IRQ1,
+ .end = MAX8925_CHG_IRQ1_MASK,
+ .flags = IORESOURCE_IO,
+ },
+};
+
+static struct mfd_cell power_devs[] = {
+ {
+ .name = "max8925-power",
+ .num_resources = 1,
+ .resources = &power_supply_resources[0],
+ .id = -1,
+ },
+};
+
+static struct resource rtc_resources[] = {
+ {
+ .name = "max8925-rtc",
+ .start = MAX8925_RTC_IRQ,
+ .end = MAX8925_RTC_IRQ_MASK,
+ .flags = IORESOURCE_IO,
+ },
+};
+
+static struct mfd_cell rtc_devs[] = {
+ {
+ .name = "max8925-rtc",
+ .num_resources = 1,
+ .resources = &rtc_resources[0],
+ .id = -1,
+ },
+};
+
+#define MAX8925_REG_RESOURCE(_start, _end) \
+{ \
+ .start = MAX8925_##_start, \
+ .end = MAX8925_##_end, \
+ .flags = IORESOURCE_IO, \
+}
+
+static struct resource regulator_resources[] = {
+ MAX8925_REG_RESOURCE(SDCTL1, SDCTL1),
+ MAX8925_REG_RESOURCE(SDCTL2, SDCTL2),
+ MAX8925_REG_RESOURCE(SDCTL3, SDCTL3),
+ MAX8925_REG_RESOURCE(LDOCTL1, LDOCTL1),
+ MAX8925_REG_RESOURCE(LDOCTL2, LDOCTL2),
+ MAX8925_REG_RESOURCE(LDOCTL3, LDOCTL3),
+ MAX8925_REG_RESOURCE(LDOCTL4, LDOCTL4),
+ MAX8925_REG_RESOURCE(LDOCTL5, LDOCTL5),
+ MAX8925_REG_RESOURCE(LDOCTL6, LDOCTL6),
+ MAX8925_REG_RESOURCE(LDOCTL7, LDOCTL7),
+ MAX8925_REG_RESOURCE(LDOCTL8, LDOCTL8),
+ MAX8925_REG_RESOURCE(LDOCTL9, LDOCTL9),
+ MAX8925_REG_RESOURCE(LDOCTL10, LDOCTL10),
+ MAX8925_REG_RESOURCE(LDOCTL11, LDOCTL11),
+ MAX8925_REG_RESOURCE(LDOCTL12, LDOCTL12),
+ MAX8925_REG_RESOURCE(LDOCTL13, LDOCTL13),
+ MAX8925_REG_RESOURCE(LDOCTL14, LDOCTL14),
+ MAX8925_REG_RESOURCE(LDOCTL15, LDOCTL15),
+ MAX8925_REG_RESOURCE(LDOCTL16, LDOCTL16),
+ MAX8925_REG_RESOURCE(LDOCTL17, LDOCTL17),
+ MAX8925_REG_RESOURCE(LDOCTL18, LDOCTL18),
+ MAX8925_REG_RESOURCE(LDOCTL19, LDOCTL19),
+ MAX8925_REG_RESOURCE(LDOCTL20, LDOCTL20),
+};
+
+#define MAX8925_REG_DEVS(_id) \
+{ \
+ .name = "max8925-regulator", \
+ .num_resources = 1, \
+ .resources = &regulator_resources[MAX8925_ID_##_id], \
+ .id = MAX8925_ID_##_id, \
+}
+
+static struct mfd_cell regulator_devs[] = {
+ MAX8925_REG_DEVS(SD1),
+ MAX8925_REG_DEVS(SD2),
+ MAX8925_REG_DEVS(SD3),
+ MAX8925_REG_DEVS(LDO1),
+ MAX8925_REG_DEVS(LDO2),
+ MAX8925_REG_DEVS(LDO3),
+ MAX8925_REG_DEVS(LDO4),
+ MAX8925_REG_DEVS(LDO5),
+ MAX8925_REG_DEVS(LDO6),
+ MAX8925_REG_DEVS(LDO7),
+ MAX8925_REG_DEVS(LDO8),
+ MAX8925_REG_DEVS(LDO9),
+ MAX8925_REG_DEVS(LDO10),
+ MAX8925_REG_DEVS(LDO11),
+ MAX8925_REG_DEVS(LDO12),
+ MAX8925_REG_DEVS(LDO13),
+ MAX8925_REG_DEVS(LDO14),
+ MAX8925_REG_DEVS(LDO15),
+ MAX8925_REG_DEVS(LDO16),
+ MAX8925_REG_DEVS(LDO17),
+ MAX8925_REG_DEVS(LDO18),
+ MAX8925_REG_DEVS(LDO19),
+ MAX8925_REG_DEVS(LDO20),
+};
+
+enum {
+ FLAGS_ADC = 1, /* register in ADC component */
+ FLAGS_RTC, /* register in RTC component */
+};
+
+struct max8925_irq_data {
+ int reg;
+ int mask_reg;
+ int enable; /* enable or not */
+ int offs; /* bit offset in mask register */
+ int flags;
+ int tsc_irq;
+};
+
+static struct max8925_irq_data max8925_irqs[] = {
+ [MAX8925_IRQ_VCHG_DC_OVP] = {
+ .reg = MAX8925_CHG_IRQ1,
+ .mask_reg = MAX8925_CHG_IRQ1_MASK,
+ .offs = 1 << 0,
+ },
+ [MAX8925_IRQ_VCHG_DC_F] = {
+ .reg = MAX8925_CHG_IRQ1,
+ .mask_reg = MAX8925_CHG_IRQ1_MASK,
+ .offs = 1 << 1,
+ },
+ [MAX8925_IRQ_VCHG_DC_R] = {
+ .reg = MAX8925_CHG_IRQ1,
+ .mask_reg = MAX8925_CHG_IRQ1_MASK,
+ .offs = 1 << 2,
+ },
+ [MAX8925_IRQ_VCHG_USB_OVP] = {
+ .reg = MAX8925_CHG_IRQ1,
+ .mask_reg = MAX8925_CHG_IRQ1_MASK,
+ .offs = 1 << 3,
+ },
+ [MAX8925_IRQ_VCHG_USB_F] = {
+ .reg = MAX8925_CHG_IRQ1,
+ .mask_reg = MAX8925_CHG_IRQ1_MASK,
+ .offs = 1 << 4,
+ },
+ [MAX8925_IRQ_VCHG_USB_R] = {
+ .reg = MAX8925_CHG_IRQ1,
+ .mask_reg = MAX8925_CHG_IRQ1_MASK,
+ .offs = 1 << 5,
+ },
+ [MAX8925_IRQ_VCHG_THM_OK_R] = {
+ .reg = MAX8925_CHG_IRQ2,
+ .mask_reg = MAX8925_CHG_IRQ2_MASK,
+ .offs = 1 << 0,
+ },
+ [MAX8925_IRQ_VCHG_THM_OK_F] = {
+ .reg = MAX8925_CHG_IRQ2,
+ .mask_reg = MAX8925_CHG_IRQ2_MASK,
+ .offs = 1 << 1,
+ },
+ [MAX8925_IRQ_VCHG_SYSLOW_F] = {
+ .reg = MAX8925_CHG_IRQ2,
+ .mask_reg = MAX8925_CHG_IRQ2_MASK,
+ .offs = 1 << 2,
+ },
+ [MAX8925_IRQ_VCHG_SYSLOW_R] = {
+ .reg = MAX8925_CHG_IRQ2,
+ .mask_reg = MAX8925_CHG_IRQ2_MASK,
+ .offs = 1 << 3,
+ },
+ [MAX8925_IRQ_VCHG_RST] = {
+ .reg = MAX8925_CHG_IRQ2,
+ .mask_reg = MAX8925_CHG_IRQ2_MASK,
+ .offs = 1 << 4,
+ },
+ [MAX8925_IRQ_VCHG_DONE] = {
+ .reg = MAX8925_CHG_IRQ2,
+ .mask_reg = MAX8925_CHG_IRQ2_MASK,
+ .offs = 1 << 5,
+ },
+ [MAX8925_IRQ_VCHG_TOPOFF] = {
+ .reg = MAX8925_CHG_IRQ2,
+ .mask_reg = MAX8925_CHG_IRQ2_MASK,
+ .offs = 1 << 6,
+ },
+ [MAX8925_IRQ_VCHG_TMR_FAULT] = {
+ .reg = MAX8925_CHG_IRQ2,
+ .mask_reg = MAX8925_CHG_IRQ2_MASK,
+ .offs = 1 << 7,
+ },
+ [MAX8925_IRQ_GPM_RSTIN] = {
+ .reg = MAX8925_ON_OFF_IRQ1,
+ .mask_reg = MAX8925_ON_OFF_IRQ1_MASK,
+ .offs = 1 << 0,
+ },
+ [MAX8925_IRQ_GPM_MPL] = {
+ .reg = MAX8925_ON_OFF_IRQ1,
+ .mask_reg = MAX8925_ON_OFF_IRQ1_MASK,
+ .offs = 1 << 1,
+ },
+ [MAX8925_IRQ_GPM_SW_3SEC] = {
+ .reg = MAX8925_ON_OFF_IRQ1,
+ .mask_reg = MAX8925_ON_OFF_IRQ1_MASK,
+ .offs = 1 << 2,
+ },
+ [MAX8925_IRQ_GPM_EXTON_F] = {
+ .reg = MAX8925_ON_OFF_IRQ1,
+ .mask_reg = MAX8925_ON_OFF_IRQ1_MASK,
+ .offs = 1 << 3,
+ },
+ [MAX8925_IRQ_GPM_EXTON_R] = {
+ .reg = MAX8925_ON_OFF_IRQ1,
+ .mask_reg = MAX8925_ON_OFF_IRQ1_MASK,
+ .offs = 1 << 4,
+ },
+ [MAX8925_IRQ_GPM_SW_1SEC] = {
+ .reg = MAX8925_ON_OFF_IRQ1,
+ .mask_reg = MAX8925_ON_OFF_IRQ1_MASK,
+ .offs = 1 << 5,
+ },
+ [MAX8925_IRQ_GPM_SW_F] = {
+ .reg = MAX8925_ON_OFF_IRQ1,
+ .mask_reg = MAX8925_ON_OFF_IRQ1_MASK,
+ .offs = 1 << 6,
+ },
+ [MAX8925_IRQ_GPM_SW_R] = {
+ .reg = MAX8925_ON_OFF_IRQ1,
+ .mask_reg = MAX8925_ON_OFF_IRQ1_MASK,
+ .offs = 1 << 7,
+ },
+ [MAX8925_IRQ_GPM_SYSCKEN_F] = {
+ .reg = MAX8925_ON_OFF_IRQ2,
+ .mask_reg = MAX8925_ON_OFF_IRQ2_MASK,
+ .offs = 1 << 0,
+ },
+ [MAX8925_IRQ_GPM_SYSCKEN_R] = {
+ .reg = MAX8925_ON_OFF_IRQ2,
+ .mask_reg = MAX8925_ON_OFF_IRQ2_MASK,
+ .offs = 1 << 1,
+ },
+ [MAX8925_IRQ_RTC_ALARM1] = {
+ .reg = MAX8925_RTC_IRQ,
+ .mask_reg = MAX8925_RTC_IRQ_MASK,
+ .offs = 1 << 2,
+ .flags = FLAGS_RTC,
+ },
+ [MAX8925_IRQ_RTC_ALARM0] = {
+ .reg = MAX8925_RTC_IRQ,
+ .mask_reg = MAX8925_RTC_IRQ_MASK,
+ .offs = 1 << 3,
+ .flags = FLAGS_RTC,
+ },
+ [MAX8925_IRQ_TSC_STICK] = {
+ .reg = MAX8925_TSC_IRQ,
+ .mask_reg = MAX8925_TSC_IRQ_MASK,
+ .offs = 1 << 0,
+ .flags = FLAGS_ADC,
+ .tsc_irq = 1,
+ },
+ [MAX8925_IRQ_TSC_NSTICK] = {
+ .reg = MAX8925_TSC_IRQ,
+ .mask_reg = MAX8925_TSC_IRQ_MASK,
+ .offs = 1 << 1,
+ .flags = FLAGS_ADC,
+ .tsc_irq = 1,
+ },
+};
+
+static inline struct max8925_irq_data *irq_to_max8925(struct max8925_chip *chip,
+ int irq)
+{
+ return &max8925_irqs[irq - chip->irq_base];
+}
+
+static irqreturn_t max8925_irq(int irq, void *data)
+{
+ struct max8925_chip *chip = data;
+ struct max8925_irq_data *irq_data;
+ struct i2c_client *i2c;
+ int read_reg = -1, value = 0;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(max8925_irqs); i++) {
+ irq_data = &max8925_irqs[i];
+ /* TSC IRQ should be serviced in max8925_tsc_irq() */
+ if (irq_data->tsc_irq)
+ continue;
+ if (irq_data->flags == FLAGS_RTC)
+ i2c = chip->rtc;
+ else if (irq_data->flags == FLAGS_ADC)
+ i2c = chip->adc;
+ else
+ i2c = chip->i2c;
+ if (read_reg != irq_data->reg) {
+ read_reg = irq_data->reg;
+ value = max8925_reg_read(i2c, irq_data->reg);
+ }
+ if (value & irq_data->enable)
+ handle_nested_irq(chip->irq_base + i);
+ }
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t max8925_tsc_irq(int irq, void *data)
+{
+ struct max8925_chip *chip = data;
+ struct max8925_irq_data *irq_data;
+ struct i2c_client *i2c;
+ int read_reg = -1, value = 0;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(max8925_irqs); i++) {
+ irq_data = &max8925_irqs[i];
+ /* non TSC IRQ should be serviced in max8925_irq() */
+ if (!irq_data->tsc_irq)
+ continue;
+ if (irq_data->flags == FLAGS_RTC)
+ i2c = chip->rtc;
+ else if (irq_data->flags == FLAGS_ADC)
+ i2c = chip->adc;
+ else
+ i2c = chip->i2c;
+ if (read_reg != irq_data->reg) {
+ read_reg = irq_data->reg;
+ value = max8925_reg_read(i2c, irq_data->reg);
+ }
+ if (value & irq_data->enable)
+ handle_nested_irq(chip->irq_base + i);
+ }
+ return IRQ_HANDLED;
+}
+
+static void max8925_irq_lock(unsigned int irq)
+{
+ struct max8925_chip *chip = get_irq_chip_data(irq);
+
+ mutex_lock(&chip->irq_lock);
+}
+
+static void max8925_irq_sync_unlock(unsigned int irq)
+{
+ struct max8925_chip *chip = get_irq_chip_data(irq);
+ struct max8925_irq_data *irq_data;
+ static unsigned char cache_chg[2] = {0xff, 0xff};
+ static unsigned char cache_on[2] = {0xff, 0xff};
+ static unsigned char cache_rtc = 0xff, cache_tsc = 0xff;
+ unsigned char irq_chg[2], irq_on[2];
+ unsigned char irq_rtc, irq_tsc;
+ int i;
+
+ /* Load cached value. In initial, all IRQs are masked */
+ irq_chg[0] = cache_chg[0];
+ irq_chg[1] = cache_chg[1];
+ irq_on[0] = cache_on[0];
+ irq_on[1] = cache_on[1];
+ irq_rtc = cache_rtc;
+ irq_tsc = cache_tsc;
+ for (i = 0; i < ARRAY_SIZE(max8925_irqs); i++) {
+ irq_data = &max8925_irqs[i];
+ switch (irq_data->mask_reg) {
+ case MAX8925_CHG_IRQ1_MASK:
+ irq_chg[0] &= irq_data->enable;
+ break;
+ case MAX8925_CHG_IRQ2_MASK:
+ irq_chg[1] &= irq_data->enable;
+ break;
+ case MAX8925_ON_OFF_IRQ1_MASK:
+ irq_on[0] &= irq_data->enable;
+ break;
+ case MAX8925_ON_OFF_IRQ2_MASK:
+ irq_on[1] &= irq_data->enable;
+ break;
+ case MAX8925_RTC_IRQ_MASK:
+ irq_rtc &= irq_data->enable;
+ break;
+ case MAX8925_TSC_IRQ_MASK:
+ irq_tsc &= irq_data->enable;
+ break;
+ default:
+ dev_err(chip->dev, "wrong IRQ\n");
+ break;
+ }
+ }
+ /* update mask into registers */
+ if (cache_chg[0] != irq_chg[0]) {
+ cache_chg[0] = irq_chg[0];
+ max8925_reg_write(chip->i2c, MAX8925_CHG_IRQ1_MASK,
+ irq_chg[0]);
+ }
+ if (cache_chg[1] != irq_chg[1]) {
+ cache_chg[1] = irq_chg[1];
+ max8925_reg_write(chip->i2c, MAX8925_CHG_IRQ2_MASK,
+ irq_chg[1]);
+ }
+ if (cache_on[0] != irq_on[0]) {
+ cache_on[0] = irq_on[0];
+ max8925_reg_write(chip->i2c, MAX8925_ON_OFF_IRQ1_MASK,
+ irq_on[0]);
+ }
+ if (cache_on[1] != irq_on[1]) {
+ cache_on[1] = irq_on[1];
+ max8925_reg_write(chip->i2c, MAX8925_ON_OFF_IRQ2_MASK,
+ irq_on[1]);
+ }
+ if (cache_rtc != irq_rtc) {
+ cache_rtc = irq_rtc;
+ max8925_reg_write(chip->rtc, MAX8925_RTC_IRQ_MASK, irq_rtc);
+ }
+ if (cache_tsc != irq_tsc) {
+ cache_tsc = irq_tsc;
+ max8925_reg_write(chip->adc, MAX8925_TSC_IRQ_MASK, irq_tsc);
+ }
+
+ mutex_unlock(&chip->irq_lock);
+}
+
+static void max8925_irq_enable(unsigned int irq)
+{
+ struct max8925_chip *chip = get_irq_chip_data(irq);
+ max8925_irqs[irq - chip->irq_base].enable
+ = max8925_irqs[irq - chip->irq_base].offs;
+}
+
+static void max8925_irq_disable(unsigned int irq)
+{
+ struct max8925_chip *chip = get_irq_chip_data(irq);
+ max8925_irqs[irq - chip->irq_base].enable = 0;
+}
+
+static struct irq_chip max8925_irq_chip = {
+ .name = "max8925",
+ .bus_lock = max8925_irq_lock,
+ .bus_sync_unlock = max8925_irq_sync_unlock,
+ .enable = max8925_irq_enable,
+ .disable = max8925_irq_disable,
+};
+
+static int max8925_irq_init(struct max8925_chip *chip, int irq,
+ struct max8925_platform_data *pdata)
+{
+ unsigned long flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT;
+ struct irq_desc *desc;
+ int i, ret;
+ int __irq;
+
+ if (!pdata || !pdata->irq_base) {
+ dev_warn(chip->dev, "No interrupt support on IRQ base\n");
+ return -EINVAL;
+ }
+ /* clear all interrupts */
+ max8925_reg_read(chip->i2c, MAX8925_CHG_IRQ1);
+ max8925_reg_read(chip->i2c, MAX8925_CHG_IRQ2);
+ max8925_reg_read(chip->i2c, MAX8925_ON_OFF_IRQ1);
+ max8925_reg_read(chip->i2c, MAX8925_ON_OFF_IRQ2);
+ max8925_reg_read(chip->rtc, MAX8925_RTC_IRQ);
+ max8925_reg_read(chip->adc, MAX8925_TSC_IRQ);
+ /* mask all interrupts */
+ max8925_reg_write(chip->rtc, MAX8925_ALARM0_CNTL, 0);
+ max8925_reg_write(chip->rtc, MAX8925_ALARM1_CNTL, 0);
+ max8925_reg_write(chip->i2c, MAX8925_CHG_IRQ1_MASK, 0xff);
+ max8925_reg_write(chip->i2c, MAX8925_CHG_IRQ2_MASK, 0xff);
+ max8925_reg_write(chip->i2c, MAX8925_ON_OFF_IRQ1_MASK, 0xff);
+ max8925_reg_write(chip->i2c, MAX8925_ON_OFF_IRQ2_MASK, 0xff);
+ max8925_reg_write(chip->rtc, MAX8925_RTC_IRQ_MASK, 0xff);
+ max8925_reg_write(chip->adc, MAX8925_TSC_IRQ_MASK, 0xff);
+
+ mutex_init(&chip->irq_lock);
+ chip->core_irq = irq;
+ chip->irq_base = pdata->irq_base;
+ desc = irq_to_desc(chip->core_irq);
+
+ /* register with genirq */
+ for (i = 0; i < ARRAY_SIZE(max8925_irqs); i++) {
+ __irq = i + chip->irq_base;
+ set_irq_chip_data(__irq, chip);
+ set_irq_chip_and_handler(__irq, &max8925_irq_chip,
+ handle_edge_irq);
+ set_irq_nested_thread(__irq, 1);
+#ifdef CONFIG_ARM
+ set_irq_flags(__irq, IRQF_VALID);
+#else
+ set_irq_noprobe(__irq);
+#endif
+ }
+ if (!irq) {
+ dev_warn(chip->dev, "No interrupt support on core IRQ\n");
+ goto tsc_irq;
+ }
+
+ ret = request_threaded_irq(irq, NULL, max8925_irq, flags,
+ "max8925", chip);
+ if (ret) {
+ dev_err(chip->dev, "Failed to request core IRQ: %d\n", ret);
+ chip->core_irq = 0;
+ }
+tsc_irq:
+ if (!pdata->tsc_irq) {
+ dev_warn(chip->dev, "No interrupt support on TSC IRQ\n");
+ return 0;
+ }
+ chip->tsc_irq = pdata->tsc_irq;
+
+ ret = request_threaded_irq(chip->tsc_irq, NULL, max8925_tsc_irq,
+ flags, "max8925-tsc", chip);
+ if (ret) {
+ dev_err(chip->dev, "Failed to request TSC IRQ: %d\n", ret);
+ chip->tsc_irq = 0;
+ }
+ return 0;
+}
+
+int __devinit max8925_device_init(struct max8925_chip *chip,
+ struct max8925_platform_data *pdata)
+{
+ int ret;
+
+ max8925_irq_init(chip, chip->i2c->irq, pdata);
+
+ if (pdata && (pdata->power || pdata->touch)) {
+ /* enable ADC to control internal reference */
+ max8925_set_bits(chip->i2c, MAX8925_RESET_CNFG, 1, 1);
+ /* enable internal reference for ADC */
+ max8925_set_bits(chip->adc, MAX8925_TSC_CNFG1, 3, 2);
+ /* check for internal reference IRQ */
+ do {
+ ret = max8925_reg_read(chip->adc, MAX8925_TSC_IRQ);
+ } while (ret & MAX8925_NREF_OK);
+ /* enaable ADC scheduler, interval is 1 second */
+ max8925_set_bits(chip->adc, MAX8925_ADC_SCHED, 3, 2);
+ }
+
+ /* enable Momentary Power Loss */
+ max8925_set_bits(chip->rtc, MAX8925_MPL_CNTL, 1 << 4, 1 << 4);
+
+ ret = mfd_add_devices(chip->dev, 0, &rtc_devs[0],
+ ARRAY_SIZE(rtc_devs),
+ &rtc_resources[0], 0);
+ if (ret < 0) {
+ dev_err(chip->dev, "Failed to add rtc subdev\n");
+ goto out;
+ }
+ if (pdata && pdata->regulator[0]) {
+ ret = mfd_add_devices(chip->dev, 0, &regulator_devs[0],
+ ARRAY_SIZE(regulator_devs),
+ &regulator_resources[0], 0);
+ if (ret < 0) {
+ dev_err(chip->dev, "Failed to add regulator subdev\n");
+ goto out_dev;
+ }
+ }
+
+ if (pdata && pdata->backlight) {
+ ret = mfd_add_devices(chip->dev, 0, &backlight_devs[0],
+ ARRAY_SIZE(backlight_devs),
+ &backlight_resources[0], 0);
+ if (ret < 0) {
+ dev_err(chip->dev, "Failed to add backlight subdev\n");
+ goto out_dev;
+ }
+ }
+
+ if (pdata && pdata->power) {
+ ret = mfd_add_devices(chip->dev, 0, &power_devs[0],
+ ARRAY_SIZE(power_devs),
+ &power_supply_resources[0], 0);
+ if (ret < 0) {
+ dev_err(chip->dev, "Failed to add power supply "
+ "subdev\n");
+ goto out_dev;
+ }
+ }
+
+ if (pdata && pdata->touch) {
+ ret = mfd_add_devices(chip->dev, 0, &touch_devs[0],
+ ARRAY_SIZE(touch_devs),
+ &touch_resources[0], 0);
+ if (ret < 0) {
+ dev_err(chip->dev, "Failed to add touch subdev\n");
+ goto out_dev;
+ }
+ }
+
+ return 0;
+out_dev:
+ mfd_remove_devices(chip->dev);
+out:
+ return ret;
+}
+
+void __devexit max8925_device_exit(struct max8925_chip *chip)
+{
+ if (chip->core_irq)
+ free_irq(chip->core_irq, chip);
+ if (chip->tsc_irq)
+ free_irq(chip->tsc_irq, chip);
+ mfd_remove_devices(chip->dev);
+}
+
+
+MODULE_DESCRIPTION("PMIC Driver for Maxim MAX8925");
+MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mfd/max8925-i2c.c b/drivers/mfd/max8925-i2c.c
new file mode 100644
index 000000000000..c0b883c14f41
--- /dev/null
+++ b/drivers/mfd/max8925-i2c.c
@@ -0,0 +1,211 @@
+/*
+ * I2C driver for Maxim MAX8925
+ *
+ * Copyright (C) 2009 Marvell International Ltd.
+ * Haojian Zhuang <haojian.zhuang@marvell.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/i2c.h>
+#include <linux/mfd/max8925.h>
+
+#define RTC_I2C_ADDR 0x68
+#define ADC_I2C_ADDR 0x47
+
+static inline int max8925_read_device(struct i2c_client *i2c,
+ int reg, int bytes, void *dest)
+{
+ int ret;
+
+ if (bytes > 1)
+ ret = i2c_smbus_read_i2c_block_data(i2c, reg, bytes, dest);
+ else {
+ ret = i2c_smbus_read_byte_data(i2c, reg);
+ if (ret < 0)
+ return ret;
+ *(unsigned char *)dest = (unsigned char)ret;
+ }
+ return ret;
+}
+
+static inline int max8925_write_device(struct i2c_client *i2c,
+ int reg, int bytes, void *src)
+{
+ unsigned char buf[bytes + 1];
+ int ret;
+
+ buf[0] = (unsigned char)reg;
+ memcpy(&buf[1], src, bytes);
+
+ ret = i2c_master_send(i2c, buf, bytes + 1);
+ if (ret < 0)
+ return ret;
+ return 0;
+}
+
+int max8925_reg_read(struct i2c_client *i2c, int reg)
+{
+ struct max8925_chip *chip = i2c_get_clientdata(i2c);
+ unsigned char data = 0;
+ int ret;
+
+ mutex_lock(&chip->io_lock);
+ ret = max8925_read_device(i2c, reg, 1, &data);
+ mutex_unlock(&chip->io_lock);
+
+ if (ret < 0)
+ return ret;
+ else
+ return (int)data;
+}
+EXPORT_SYMBOL(max8925_reg_read);
+
+int max8925_reg_write(struct i2c_client *i2c, int reg,
+ unsigned char data)
+{
+ struct max8925_chip *chip = i2c_get_clientdata(i2c);
+ int ret;
+
+ mutex_lock(&chip->io_lock);
+ ret = max8925_write_device(i2c, reg, 1, &data);
+ mutex_unlock(&chip->io_lock);
+
+ return ret;
+}
+EXPORT_SYMBOL(max8925_reg_write);
+
+int max8925_bulk_read(struct i2c_client *i2c, int reg,
+ int count, unsigned char *buf)
+{
+ struct max8925_chip *chip = i2c_get_clientdata(i2c);
+ int ret;
+
+ mutex_lock(&chip->io_lock);
+ ret = max8925_read_device(i2c, reg, count, buf);
+ mutex_unlock(&chip->io_lock);
+
+ return ret;
+}
+EXPORT_SYMBOL(max8925_bulk_read);
+
+int max8925_bulk_write(struct i2c_client *i2c, int reg,
+ int count, unsigned char *buf)
+{
+ struct max8925_chip *chip = i2c_get_clientdata(i2c);
+ int ret;
+
+ mutex_lock(&chip->io_lock);
+ ret = max8925_write_device(i2c, reg, count, buf);
+ mutex_unlock(&chip->io_lock);
+
+ return ret;
+}
+EXPORT_SYMBOL(max8925_bulk_write);
+
+int max8925_set_bits(struct i2c_client *i2c, int reg,
+ unsigned char mask, unsigned char data)
+{
+ struct max8925_chip *chip = i2c_get_clientdata(i2c);
+ unsigned char value;
+ int ret;
+
+ mutex_lock(&chip->io_lock);
+ ret = max8925_read_device(i2c, reg, 1, &value);
+ if (ret < 0)
+ goto out;
+ value &= ~mask;
+ value |= data;
+ ret = max8925_write_device(i2c, reg, 1, &value);
+out:
+ mutex_unlock(&chip->io_lock);
+ return ret;
+}
+EXPORT_SYMBOL(max8925_set_bits);
+
+
+static const struct i2c_device_id max8925_id_table[] = {
+ { "max8925", 0 },
+ { },
+};
+MODULE_DEVICE_TABLE(i2c, max8925_id_table);
+
+static int __devinit max8925_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct max8925_platform_data *pdata = client->dev.platform_data;
+ static struct max8925_chip *chip;
+
+ if (!pdata) {
+ pr_info("%s: platform data is missing\n", __func__);
+ return -EINVAL;
+ }
+
+ chip = kzalloc(sizeof(struct max8925_chip), GFP_KERNEL);
+ if (chip == NULL)
+ return -ENOMEM;
+ chip->i2c = client;
+ chip->dev = &client->dev;
+ i2c_set_clientdata(client, chip);
+ dev_set_drvdata(chip->dev, chip);
+ mutex_init(&chip->io_lock);
+
+ chip->rtc = i2c_new_dummy(chip->i2c->adapter, RTC_I2C_ADDR);
+ i2c_set_clientdata(chip->rtc, chip);
+
+ chip->adc = i2c_new_dummy(chip->i2c->adapter, ADC_I2C_ADDR);
+ i2c_set_clientdata(chip->adc, chip);
+
+ max8925_device_init(chip, pdata);
+
+ return 0;
+}
+
+static int __devexit max8925_remove(struct i2c_client *client)
+{
+ struct max8925_chip *chip = i2c_get_clientdata(client);
+
+ max8925_device_exit(chip);
+ i2c_unregister_device(chip->adc);
+ i2c_unregister_device(chip->rtc);
+ i2c_set_clientdata(chip->adc, NULL);
+ i2c_set_clientdata(chip->rtc, NULL);
+ i2c_set_clientdata(chip->i2c, NULL);
+ kfree(chip);
+ return 0;
+}
+
+static struct i2c_driver max8925_driver = {
+ .driver = {
+ .name = "max8925",
+ .owner = THIS_MODULE,
+ },
+ .probe = max8925_probe,
+ .remove = __devexit_p(max8925_remove),
+ .id_table = max8925_id_table,
+};
+
+static int __init max8925_i2c_init(void)
+{
+ int ret;
+
+ ret = i2c_add_driver(&max8925_driver);
+ if (ret != 0)
+ pr_err("Failed to register MAX8925 I2C driver: %d\n", ret);
+ return ret;
+}
+subsys_initcall(max8925_i2c_init);
+
+static void __exit max8925_i2c_exit(void)
+{
+ i2c_del_driver(&max8925_driver);
+}
+module_exit(max8925_i2c_exit);
+
+MODULE_DESCRIPTION("I2C Driver for Maxim 8925");
+MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mfd/mfd-core.c b/drivers/mfd/mfd-core.c
index ae15e495e20e..aa17f4bddc56 100644
--- a/drivers/mfd/mfd-core.c
+++ b/drivers/mfd/mfd-core.c
@@ -13,6 +13,7 @@
#include <linux/kernel.h>
#include <linux/platform_device.h>
+#include <linux/acpi.h>
#include <linux/mfd/core.h>
static int mfd_add_device(struct device *parent, int id,
@@ -62,6 +63,10 @@ static int mfd_add_device(struct device *parent, int id,
res[r].start = cell->resources[r].start;
res[r].end = cell->resources[r].end;
}
+
+ ret = acpi_check_resource_conflict(res);
+ if (ret)
+ goto fail_res;
}
platform_device_add_resources(pdev, res, cell->num_resources);
diff --git a/drivers/mfd/sh_mobile_sdhi.c b/drivers/mfd/sh_mobile_sdhi.c
index 03efae8041ab..468fd366d4da 100644
--- a/drivers/mfd/sh_mobile_sdhi.c
+++ b/drivers/mfd/sh_mobile_sdhi.c
@@ -21,7 +21,7 @@
#include <linux/kernel.h>
#include <linux/clk.h>
#include <linux/platform_device.h>
-
+#include <linux/mmc/host.h>
#include <linux/mfd/core.h>
#include <linux/mfd/tmio.h>
#include <linux/mfd/sh_mobile_sdhi.h>
@@ -95,9 +95,9 @@ static int __init sh_mobile_sdhi_probe(struct platform_device *pdev)
clk_enable(priv->clk);
- /* FIXME: silly const unsigned int hclk */
- *(unsigned int *)&priv->mmc_data.hclk = clk_get_rate(priv->clk);
+ priv->mmc_data.hclk = clk_get_rate(priv->clk);
priv->mmc_data.set_pwr = sh_mobile_sdhi_set_pwr;
+ priv->mmc_data.capabilities = MMC_CAP_MMC_HIGHSPEED;
memcpy(&priv->cell_mmc, &sh_mobile_sdhi_cell, sizeof(priv->cell_mmc));
priv->cell_mmc.driver_data = &priv->mmc_data;
diff --git a/drivers/mfd/sm501.c b/drivers/mfd/sm501.c
index 0cc5eeff5ee8..dc9ea95c0561 100644
--- a/drivers/mfd/sm501.c
+++ b/drivers/mfd/sm501.c
@@ -1430,7 +1430,7 @@ static int __devinit sm501_plat_probe(struct platform_device *dev)
}
sm->regs_claim = request_mem_region(sm->io_res->start,
- 0x100, "sm501");
+ resource_size(sm->io_res), "sm501");
if (sm->regs_claim == NULL) {
dev_err(&dev->dev, "cannot claim registers\n");
@@ -1440,8 +1440,7 @@ static int __devinit sm501_plat_probe(struct platform_device *dev)
platform_set_drvdata(dev, sm);
- sm->regs = ioremap(sm->io_res->start,
- (sm->io_res->end - sm->io_res->start) - 1);
+ sm->regs = ioremap(sm->io_res->start, resource_size(sm->io_res));
if (sm->regs == NULL) {
dev_err(&dev->dev, "cannot remap registers\n");
@@ -1645,7 +1644,7 @@ static int __devinit sm501_pci_probe(struct pci_dev *dev,
sm->mem_res = &dev->resource[0];
sm->regs_claim = request_mem_region(sm->io_res->start,
- 0x100, "sm501");
+ resource_size(sm->io_res), "sm501");
if (sm->regs_claim == NULL) {
dev_err(&dev->dev, "cannot claim registers\n");
err= -EBUSY;
diff --git a/drivers/mfd/t7l66xb.c b/drivers/mfd/t7l66xb.c
index bcf4687d4af5..26d9176fca91 100644
--- a/drivers/mfd/t7l66xb.c
+++ b/drivers/mfd/t7l66xb.c
@@ -360,7 +360,7 @@ static int t7l66xb_probe(struct platform_device *dev)
if (ret)
goto err_request_scr;
- t7l66xb->scr = ioremap(rscr->start, rscr->end - rscr->start + 1);
+ t7l66xb->scr = ioremap(rscr->start, resource_size(rscr));
if (!t7l66xb->scr) {
ret = -ENOMEM;
goto err_ioremap;
@@ -403,12 +403,12 @@ static int t7l66xb_probe(struct platform_device *dev)
err_ioremap:
release_resource(&t7l66xb->rscr);
err_request_scr:
- kfree(t7l66xb);
clk_put(t7l66xb->clk48m);
err_clk48m_get:
clk_put(t7l66xb->clk32k);
err_clk32k_get:
err_noirq:
+ kfree(t7l66xb);
return ret;
}
diff --git a/drivers/mfd/tc6393xb.c b/drivers/mfd/tc6393xb.c
index 4bc5a08a2b09..c59e5c5737d0 100644
--- a/drivers/mfd/tc6393xb.c
+++ b/drivers/mfd/tc6393xb.c
@@ -647,7 +647,7 @@ static int __devinit tc6393xb_probe(struct platform_device *dev)
if (ret)
goto err_request_scr;
- tc6393xb->scr = ioremap(rscr->start, rscr->end - rscr->start + 1);
+ tc6393xb->scr = ioremap(rscr->start, resource_size(rscr));
if (!tc6393xb->scr) {
ret = -ENOMEM;
goto err_ioremap;
diff --git a/drivers/mfd/twl-core.c b/drivers/mfd/twl-core.c
index 19a930d06241..562cd4935e17 100644
--- a/drivers/mfd/twl-core.c
+++ b/drivers/mfd/twl-core.c
@@ -58,13 +58,6 @@
#define DRIVER_NAME "twl"
-#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
@@ -130,7 +123,7 @@
#define TWL_NUM_SLAVES 4
#if defined(CONFIG_INPUT_TWL4030_PWRBUTTON) \
- || defined(CONFIG_INPUT_TWL4030_PWBUTTON_MODULE)
+ || defined(CONFIG_INPUT_TWL4030_PWRBUTTON_MODULE)
#define twl_has_pwrbutton() true
#else
#define twl_has_pwrbutton() false
@@ -205,6 +198,7 @@
/* subchip/slave 3 0x4B - AUDIO */
#define TWL6030_BASEADD_AUDIO 0x0000
#define TWL6030_BASEADD_RSV 0x0000
+#define TWL6030_BASEADD_ZERO 0x0000
/* Few power values */
#define R_CFG_BOOT 0x05
@@ -320,9 +314,11 @@ static struct twl_mapping twl6030_map[] = {
{ SUB_CHIP_ID1, TWL6030_BASEADD_CHARGER },
{ SUB_CHIP_ID1, TWL6030_BASEADD_GASGAUGE },
{ SUB_CHIP_ID1, TWL6030_BASEADD_PWM },
- { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
- { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
+ { SUB_CHIP_ID0, TWL6030_BASEADD_ZERO },
+ { SUB_CHIP_ID1, TWL6030_BASEADD_ZERO },
+ { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO },
+ { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO },
{ SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
{ SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
{ SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
@@ -588,18 +584,6 @@ add_children(struct twl4030_platform_data *pdata, unsigned long features)
struct device *child;
unsigned sub_chip_id;
- if (twl_has_bci() && pdata->bci &&
- !(features & (TPS_SUBSET | TWL5031))) {
- child = add_child(3, "twl4030_bci",
- pdata->bci, sizeof(*pdata->bci),
- false,
- /* irq0 = CHG_PRES, irq1 = BCI */
- pdata->irq_base + BCI_PRES_INTR_OFFSET,
- pdata->irq_base + BCI_INTR_OFFSET);
- if (IS_ERR(child))
- return PTR_ERR(child);
- }
-
if (twl_has_gpio() && pdata->gpio) {
child = add_child(SUB_CHIP_ID1, "twl4030_gpio",
pdata->gpio, sizeof(*pdata->gpio),
@@ -977,6 +961,7 @@ twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
int status;
unsigned i;
struct twl4030_platform_data *pdata = client->dev.platform_data;
+ u8 temp;
if (!pdata) {
dev_dbg(&client->dev, "no platform data?\n");
@@ -1044,6 +1029,18 @@ twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
goto fail;
}
+ /* Disable TWL4030/TWL5030 I2C Pull-up on I2C1 and I2C4(SR) interface.
+ * Program I2C_SCL_CTRL_PU(bit 0)=0, I2C_SDA_CTRL_PU (bit 2)=0,
+ * SR_I2C_SCL_CTRL_PU(bit 4)=0 and SR_I2C_SDA_CTRL_PU(bit 6)=0.
+ */
+
+ if (twl_class_is_4030()) {
+ twl_i2c_read_u8(TWL4030_MODULE_INTBR, &temp, REG_GPPUPDCTR1);
+ temp &= ~(SR_I2C_SDA_CTRL_PU | SR_I2C_SCL_CTRL_PU | \
+ I2C_SDA_CTRL_PU | I2C_SCL_CTRL_PU);
+ twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1);
+ }
+
status = add_children(pdata, id->driver_data);
fail:
if (status < 0)
diff --git a/drivers/mfd/twl4030-power.c b/drivers/mfd/twl4030-power.c
index 0815292fdafc..7efa8789a3a2 100644
--- a/drivers/mfd/twl4030-power.c
+++ b/drivers/mfd/twl4030-power.c
@@ -405,7 +405,7 @@ static int __init twl4030_configure_resource(struct twl4030_resconfig *rconfig)
if (rconfig->remap_sleep != TWL4030_RESCONFIG_UNDEF) {
remap &= ~SLEEP_STATE_MASK;
- remap |= rconfig->remap_off << SLEEP_STATE_SHIFT;
+ remap |= rconfig->remap_sleep << SLEEP_STATE_SHIFT;
}
err = twl_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
@@ -461,6 +461,56 @@ out:
return err;
}
+int twl4030_remove_script(u8 flags)
+{
+ int err = 0;
+
+ err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, R_KEY_1,
+ R_PROTECT_KEY);
+ if (err) {
+ pr_err("twl4030: unable to unlock PROTECT_KEY\n");
+ return err;
+ }
+
+ err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, R_KEY_2,
+ R_PROTECT_KEY);
+ if (err) {
+ pr_err("twl4030: unable to unlock PROTECT_KEY\n");
+ return err;
+ }
+
+ if (flags & TWL4030_WRST_SCRIPT) {
+ err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, END_OF_SCRIPT,
+ R_SEQ_ADD_WARM);
+ if (err)
+ return err;
+ }
+ if (flags & TWL4030_WAKEUP12_SCRIPT) {
+ if (err)
+ err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, END_OF_SCRIPT,
+ R_SEQ_ADD_S2A12);
+ return err;
+ }
+ if (flags & TWL4030_WAKEUP3_SCRIPT) {
+ err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, END_OF_SCRIPT,
+ R_SEQ_ADD_S2A3);
+ if (err)
+ return err;
+ }
+ if (flags & TWL4030_SLEEP_SCRIPT) {
+ err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, END_OF_SCRIPT,
+ R_SEQ_ADD_A2S);
+ if (err)
+ return err;
+ }
+
+ err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0, R_PROTECT_KEY);
+ if (err)
+ pr_err("TWL4030 Unable to relock registers\n");
+
+ return err;
+}
+
void __init twl4030_power_init(struct twl4030_power_data *twl4030_scripts)
{
int err = 0;
diff --git a/drivers/mfd/ucb1x00-core.c b/drivers/mfd/ucb1x00-core.c
index 252b74188ec2..b281217334eb 100644
--- a/drivers/mfd/ucb1x00-core.c
+++ b/drivers/mfd/ucb1x00-core.c
@@ -27,6 +27,7 @@
#include <linux/mutex.h>
#include <linux/mfd/ucb1x00.h>
#include <linux/gpio.h>
+#include <linux/semaphore.h>
#include <mach/dma.h>
#include <mach/hardware.h>
diff --git a/drivers/mfd/wm831x-core.c b/drivers/mfd/wm831x-core.c
index 4b2021af1d96..07101e9e1cba 100644
--- a/drivers/mfd/wm831x-core.c
+++ b/drivers/mfd/wm831x-core.c
@@ -321,7 +321,6 @@ EXPORT_SYMBOL_GPL(wm831x_set_bits);
*/
int wm831x_auxadc_read(struct wm831x *wm831x, enum wm831x_auxadc input)
{
- int tries = 10;
int ret, src;
mutex_lock(&wm831x->auxadc_lock);
@@ -349,13 +348,14 @@ int wm831x_auxadc_read(struct wm831x *wm831x, enum wm831x_auxadc input)
goto disable;
}
- do {
- msleep(1);
+ /* Ignore the result to allow us to soldier on without IRQ hookup */
+ wait_for_completion_timeout(&wm831x->auxadc_done, msecs_to_jiffies(5));
- ret = wm831x_reg_read(wm831x, WM831X_AUXADC_CONTROL);
- if (ret < 0)
- ret = WM831X_AUX_CVT_ENA;
- } while ((ret & WM831X_AUX_CVT_ENA) && --tries);
+ ret = wm831x_reg_read(wm831x, WM831X_AUXADC_CONTROL);
+ if (ret < 0) {
+ dev_err(wm831x->dev, "AUXADC status read failed: %d\n", ret);
+ goto disable;
+ }
if (ret & WM831X_AUX_CVT_ENA) {
dev_err(wm831x->dev, "Timed out reading AUXADC\n");
@@ -390,6 +390,15 @@ out:
}
EXPORT_SYMBOL_GPL(wm831x_auxadc_read);
+static irqreturn_t wm831x_auxadc_irq(int irq, void *irq_data)
+{
+ struct wm831x *wm831x = irq_data;
+
+ complete(&wm831x->auxadc_done);
+
+ return IRQ_HANDLED;
+}
+
/**
* wm831x_auxadc_read_uv: Read a voltage from the WM831x AUXADC
*
@@ -1411,6 +1420,7 @@ static int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq)
mutex_init(&wm831x->io_lock);
mutex_init(&wm831x->key_lock);
mutex_init(&wm831x->auxadc_lock);
+ init_completion(&wm831x->auxadc_done);
dev_set_drvdata(wm831x->dev, wm831x);
ret = wm831x_reg_read(wm831x, WM831X_PARENT_ID);
@@ -1449,18 +1459,33 @@ static int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq)
case WM8310:
parent = WM8310;
wm831x->num_gpio = 16;
+ if (rev > 0) {
+ wm831x->has_gpio_ena = 1;
+ wm831x->has_cs_sts = 1;
+ }
+
dev_info(wm831x->dev, "WM8310 revision %c\n", 'A' + rev);
break;
case WM8311:
parent = WM8311;
wm831x->num_gpio = 16;
+ if (rev > 0) {
+ wm831x->has_gpio_ena = 1;
+ wm831x->has_cs_sts = 1;
+ }
+
dev_info(wm831x->dev, "WM8311 revision %c\n", 'A' + rev);
break;
case WM8312:
parent = WM8312;
wm831x->num_gpio = 16;
+ if (rev > 0) {
+ wm831x->has_gpio_ena = 1;
+ wm831x->has_cs_sts = 1;
+ }
+
dev_info(wm831x->dev, "WM8312 revision %c\n", 'A' + rev);
break;
@@ -1508,6 +1533,16 @@ static int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq)
if (ret != 0)
goto err;
+ if (wm831x->irq_base) {
+ ret = request_threaded_irq(wm831x->irq_base +
+ WM831X_IRQ_AUXADC_DATA,
+ NULL, wm831x_auxadc_irq, 0,
+ "auxadc", wm831x);
+ if (ret < 0)
+ dev_err(wm831x->dev, "AUXADC IRQ request failed: %d\n",
+ ret);
+ }
+
/* The core device is up, instantiate the subdevices. */
switch (parent) {
case WM8310:
@@ -1578,6 +1613,8 @@ static void wm831x_device_exit(struct wm831x *wm831x)
{
wm831x_otp_exit(wm831x);
mfd_remove_devices(wm831x->dev);
+ if (wm831x->irq_base)
+ free_irq(wm831x->irq_base + WM831X_IRQ_AUXADC_DATA, wm831x);
wm831x_irq_exit(wm831x);
kfree(wm831x);
}
diff --git a/drivers/mfd/wm8350-core.c b/drivers/mfd/wm8350-core.c
index 9a970bd68775..bd75807d5302 100644
--- a/drivers/mfd/wm8350-core.c
+++ b/drivers/mfd/wm8350-core.c
@@ -339,7 +339,6 @@ EXPORT_SYMBOL_GPL(wm8350_reg_unlock);
int wm8350_read_auxadc(struct wm8350 *wm8350, int channel, int scale, int vref)
{
u16 reg, result = 0;
- int tries = 5;
if (channel < WM8350_AUXADC_AUX1 || channel > WM8350_AUXADC_TEMP)
return -EINVAL;
@@ -363,12 +362,13 @@ int wm8350_read_auxadc(struct wm8350 *wm8350, int channel, int scale, int vref)
reg |= 1 << channel | WM8350_AUXADC_POLL;
wm8350_reg_write(wm8350, WM8350_DIGITISER_CONTROL_1, reg);
- do {
- schedule_timeout_interruptible(1);
- reg = wm8350_reg_read(wm8350, WM8350_DIGITISER_CONTROL_1);
- } while ((reg & WM8350_AUXADC_POLL) && --tries);
+ /* We ignore the result of the completion and just check for a
+ * conversion result, allowing us to soldier on if the IRQ
+ * infrastructure is not set up for the chip. */
+ wait_for_completion_timeout(&wm8350->auxadc_done, msecs_to_jiffies(5));
- if (!tries)
+ reg = wm8350_reg_read(wm8350, WM8350_DIGITISER_CONTROL_1);
+ if (reg & WM8350_AUXADC_POLL)
dev_err(wm8350->dev, "adc chn %d read timeout\n", channel);
else
result = wm8350_reg_read(wm8350,
@@ -385,6 +385,15 @@ int wm8350_read_auxadc(struct wm8350 *wm8350, int channel, int scale, int vref)
}
EXPORT_SYMBOL_GPL(wm8350_read_auxadc);
+static irqreturn_t wm8350_auxadc_irq(int irq, void *irq_data)
+{
+ struct wm8350 *wm8350 = irq_data;
+
+ complete(&wm8350->auxadc_done);
+
+ return IRQ_HANDLED;
+}
+
/*
* Cache is always host endian.
*/
@@ -682,11 +691,22 @@ int wm8350_device_init(struct wm8350 *wm8350, int irq,
}
mutex_init(&wm8350->auxadc_mutex);
+ init_completion(&wm8350->auxadc_done);
ret = wm8350_irq_init(wm8350, irq, pdata);
if (ret < 0)
goto err;
+ if (wm8350->irq_base) {
+ ret = request_threaded_irq(wm8350->irq_base +
+ WM8350_IRQ_AUXADC_DATARDY,
+ NULL, wm8350_auxadc_irq, 0,
+ "auxadc", wm8350);
+ if (ret < 0)
+ dev_warn(wm8350->dev,
+ "Failed to request AUXADC IRQ: %d\n", ret);
+ }
+
if (pdata && pdata->init) {
ret = pdata->init(wm8350);
if (ret != 0) {
@@ -736,6 +756,9 @@ void wm8350_device_exit(struct wm8350 *wm8350)
platform_device_unregister(wm8350->gpio.pdev);
platform_device_unregister(wm8350->codec.pdev);
+ if (wm8350->irq_base)
+ free_irq(wm8350->irq_base + WM8350_IRQ_AUXADC_DATARDY, wm8350);
+
wm8350_irq_exit(wm8350);
kfree(wm8350->reg_cache);
diff --git a/drivers/mfd/wm8350-irq.c b/drivers/mfd/wm8350-irq.c
index 9025f29e2707..f56c9adf9493 100644
--- a/drivers/mfd/wm8350-irq.c
+++ b/drivers/mfd/wm8350-irq.c
@@ -18,7 +18,7 @@
#include <linux/bug.h>
#include <linux/device.h>
#include <linux/interrupt.h>
-#include <linux/workqueue.h>
+#include <linux/irq.h>
#include <linux/mfd/wm8350/core.h>
#include <linux/mfd/wm8350/audio.h>
@@ -29,8 +29,6 @@
#include <linux/mfd/wm8350/supply.h>
#include <linux/mfd/wm8350/wdt.h>
-#define WM8350_NUM_IRQ_REGS 7
-
#define WM8350_INT_OFFSET_1 0
#define WM8350_INT_OFFSET_2 1
#define WM8350_POWER_UP_INT_OFFSET 2
@@ -366,19 +364,10 @@ static struct wm8350_irq_data wm8350_irqs[] = {
},
};
-static void wm8350_irq_call_handler(struct wm8350 *wm8350, int irq)
+static inline struct wm8350_irq_data *irq_to_wm8350_irq(struct wm8350 *wm8350,
+ int irq)
{
- mutex_lock(&wm8350->irq_mutex);
-
- if (wm8350->irq[irq].handler)
- wm8350->irq[irq].handler(irq, wm8350->irq[irq].data);
- else {
- dev_err(wm8350->dev, "irq %d nobody cared. now masked.\n",
- irq);
- wm8350_mask_irq(wm8350, irq);
- }
-
- mutex_unlock(&wm8350->irq_mutex);
+ return &wm8350_irqs[irq - wm8350->irq_base];
}
/*
@@ -386,7 +375,9 @@ static void wm8350_irq_call_handler(struct wm8350 *wm8350, int irq)
* interrupts are clear on read the IRQ line will be reasserted and
* the physical IRQ will be handled again if another interrupt is
* asserted while we run - in the normal course of events this is a
- * rare occurrence so we save I2C/SPI reads.
+ * rare occurrence so we save I2C/SPI reads. We're also assuming that
+ * it's rare to get lots of interrupts firing simultaneously so try to
+ * minimise I/O.
*/
static irqreturn_t wm8350_irq(int irq, void *irq_data)
{
@@ -397,7 +388,6 @@ static irqreturn_t wm8350_irq(int irq, void *irq_data)
struct wm8350_irq_data *data;
int i;
- /* TODO: Use block reads to improve performance? */
level_one = wm8350_reg_read(wm8350, WM8350_SYSTEM_INTERRUPTS)
& ~wm8350_reg_read(wm8350, WM8350_SYSTEM_INTERRUPTS_MASK);
@@ -416,93 +406,101 @@ static irqreturn_t wm8350_irq(int irq, void *irq_data)
sub_reg[data->reg] =
wm8350_reg_read(wm8350, WM8350_INT_STATUS_1 +
data->reg);
- sub_reg[data->reg] &=
- ~wm8350_reg_read(wm8350,
- WM8350_INT_STATUS_1_MASK +
- data->reg);
+ sub_reg[data->reg] &= ~wm8350->irq_masks[data->reg];
read_done[data->reg] = 1;
}
if (sub_reg[data->reg] & data->mask)
- wm8350_irq_call_handler(wm8350, i);
+ handle_nested_irq(wm8350->irq_base + i);
}
return IRQ_HANDLED;
}
-int wm8350_register_irq(struct wm8350 *wm8350, int irq,
- irq_handler_t handler, unsigned long flags,
- const char *name, void *data)
+static void wm8350_irq_lock(unsigned int irq)
{
- if (irq < 0 || irq >= WM8350_NUM_IRQ || !handler)
- return -EINVAL;
-
- if (wm8350->irq[irq].handler)
- return -EBUSY;
-
- mutex_lock(&wm8350->irq_mutex);
- wm8350->irq[irq].handler = handler;
- wm8350->irq[irq].data = data;
- mutex_unlock(&wm8350->irq_mutex);
-
- wm8350_unmask_irq(wm8350, irq);
+ struct wm8350 *wm8350 = get_irq_chip_data(irq);
- return 0;
+ mutex_lock(&wm8350->irq_lock);
}
-EXPORT_SYMBOL_GPL(wm8350_register_irq);
-int wm8350_free_irq(struct wm8350 *wm8350, int irq)
+static void wm8350_irq_sync_unlock(unsigned int irq)
{
- if (irq < 0 || irq >= WM8350_NUM_IRQ)
- return -EINVAL;
+ struct wm8350 *wm8350 = get_irq_chip_data(irq);
+ int i;
- wm8350_mask_irq(wm8350, irq);
+ for (i = 0; i < ARRAY_SIZE(wm8350->irq_masks); i++) {
+ /* If there's been a change in the mask write it back
+ * to the hardware. */
+ if (wm8350->irq_masks[i] !=
+ wm8350->reg_cache[WM8350_INT_STATUS_1_MASK + i])
+ WARN_ON(wm8350_reg_write(wm8350,
+ WM8350_INT_STATUS_1_MASK + i,
+ wm8350->irq_masks[i]));
+ }
- mutex_lock(&wm8350->irq_mutex);
- wm8350->irq[irq].handler = NULL;
- mutex_unlock(&wm8350->irq_mutex);
- return 0;
+ mutex_unlock(&wm8350->irq_lock);
}
-EXPORT_SYMBOL_GPL(wm8350_free_irq);
-int wm8350_mask_irq(struct wm8350 *wm8350, int irq)
+static void wm8350_irq_enable(unsigned int irq)
{
- return wm8350_set_bits(wm8350, WM8350_INT_STATUS_1_MASK +
- wm8350_irqs[irq].reg,
- wm8350_irqs[irq].mask);
+ struct wm8350 *wm8350 = get_irq_chip_data(irq);
+ struct wm8350_irq_data *irq_data = irq_to_wm8350_irq(wm8350, irq);
+
+ wm8350->irq_masks[irq_data->reg] &= ~irq_data->mask;
}
-EXPORT_SYMBOL_GPL(wm8350_mask_irq);
-int wm8350_unmask_irq(struct wm8350 *wm8350, int irq)
+static void wm8350_irq_disable(unsigned int irq)
{
- return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_1_MASK +
- wm8350_irqs[irq].reg,
- wm8350_irqs[irq].mask);
+ struct wm8350 *wm8350 = get_irq_chip_data(irq);
+ struct wm8350_irq_data *irq_data = irq_to_wm8350_irq(wm8350, irq);
+
+ wm8350->irq_masks[irq_data->reg] |= irq_data->mask;
}
-EXPORT_SYMBOL_GPL(wm8350_unmask_irq);
+
+static struct irq_chip wm8350_irq_chip = {
+ .name = "wm8350",
+ .bus_lock = wm8350_irq_lock,
+ .bus_sync_unlock = wm8350_irq_sync_unlock,
+ .disable = wm8350_irq_disable,
+ .enable = wm8350_irq_enable,
+};
int wm8350_irq_init(struct wm8350 *wm8350, int irq,
struct wm8350_platform_data *pdata)
{
- int ret;
+ int ret, cur_irq, i;
int flags = IRQF_ONESHOT;
if (!irq) {
- dev_err(wm8350->dev, "No IRQ configured\n");
- return -EINVAL;
+ dev_warn(wm8350->dev, "No interrupt support, no core IRQ\n");
+ return 0;
+ }
+
+ if (!pdata || !pdata->irq_base) {
+ dev_warn(wm8350->dev, "No interrupt support, no IRQ base\n");
+ return 0;
}
+ /* Mask top level interrupts */
wm8350_reg_write(wm8350, WM8350_SYSTEM_INTERRUPTS_MASK, 0xFFFF);
- wm8350_reg_write(wm8350, WM8350_INT_STATUS_1_MASK, 0xFFFF);
- wm8350_reg_write(wm8350, WM8350_INT_STATUS_2_MASK, 0xFFFF);
- wm8350_reg_write(wm8350, WM8350_UNDER_VOLTAGE_INT_STATUS_MASK, 0xFFFF);
- wm8350_reg_write(wm8350, WM8350_GPIO_INT_STATUS_MASK, 0xFFFF);
- wm8350_reg_write(wm8350, WM8350_COMPARATOR_INT_STATUS_MASK, 0xFFFF);
- mutex_init(&wm8350->irq_mutex);
+ /* Mask all individual interrupts by default and cache the
+ * masks. We read the masks back since there are unwritable
+ * bits in the mask registers. */
+ for (i = 0; i < ARRAY_SIZE(wm8350->irq_masks); i++) {
+ wm8350_reg_write(wm8350, WM8350_INT_STATUS_1_MASK + i,
+ 0xFFFF);
+ wm8350->irq_masks[i] =
+ wm8350_reg_read(wm8350,
+ WM8350_INT_STATUS_1_MASK + i);
+ }
+
+ mutex_init(&wm8350->irq_lock);
wm8350->chip_irq = irq;
+ wm8350->irq_base = pdata->irq_base;
- if (pdata && pdata->irq_high) {
+ if (pdata->irq_high) {
flags |= IRQF_TRIGGER_HIGH;
wm8350_set_bits(wm8350, WM8350_SYSTEM_CONTROL_1,
@@ -514,11 +512,32 @@ int wm8350_irq_init(struct wm8350 *wm8350, int irq,
WM8350_IRQ_POL);
}
+ /* Register with genirq */
+ for (cur_irq = wm8350->irq_base;
+ cur_irq < ARRAY_SIZE(wm8350_irqs) + wm8350->irq_base;
+ cur_irq++) {
+ set_irq_chip_data(cur_irq, wm8350);
+ set_irq_chip_and_handler(cur_irq, &wm8350_irq_chip,
+ handle_edge_irq);
+ set_irq_nested_thread(cur_irq, 1);
+
+ /* ARM needs us to explicitly flag the IRQ as valid
+ * and will set them noprobe when we do so. */
+#ifdef CONFIG_ARM
+ set_irq_flags(cur_irq, IRQF_VALID);
+#else
+ set_irq_noprobe(cur_irq);
+#endif
+ }
+
ret = request_threaded_irq(irq, NULL, wm8350_irq, flags,
"wm8350", wm8350);
if (ret != 0)
dev_err(wm8350->dev, "Failed to request IRQ: %d\n", ret);
+ /* Allow interrupts to fire */
+ wm8350_reg_write(wm8350, WM8350_SYSTEM_INTERRUPTS_MASK, 0);
+
return ret;
}
diff --git a/drivers/mfd/wm8994-core.c b/drivers/mfd/wm8994-core.c
new file mode 100644
index 000000000000..844e1c1b7d90
--- /dev/null
+++ b/drivers/mfd/wm8994-core.c
@@ -0,0 +1,537 @@
+/*
+ * wm8994-core.c -- Device access for Wolfson WM8994
+ *
+ * Copyright 2009 Wolfson Microelectronics PLC.
+ *
+ * Author: Mark Brown <broonie@opensource.wolfsonmicro.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/i2c.h>
+#include <linux/delay.h>
+#include <linux/mfd/core.h>
+#include <linux/regulator/consumer.h>
+#include <linux/regulator/machine.h>
+
+#include <linux/mfd/wm8994/core.h>
+#include <linux/mfd/wm8994/pdata.h>
+#include <linux/mfd/wm8994/registers.h>
+
+static int wm8994_read(struct wm8994 *wm8994, unsigned short reg,
+ int bytes, void *dest)
+{
+ int ret, i;
+ u16 *buf = dest;
+
+ BUG_ON(bytes % 2);
+ BUG_ON(bytes <= 0);
+
+ ret = wm8994->read_dev(wm8994, reg, bytes, dest);
+ if (ret < 0)
+ return ret;
+
+ for (i = 0; i < bytes / 2; i++) {
+ buf[i] = be16_to_cpu(buf[i]);
+
+ dev_vdbg(wm8994->dev, "Read %04x from R%d(0x%x)\n",
+ buf[i], reg + i, reg + i);
+ }
+
+ return 0;
+}
+
+/**
+ * wm8994_reg_read: Read a single WM8994 register.
+ *
+ * @wm8994: Device to read from.
+ * @reg: Register to read.
+ */
+int wm8994_reg_read(struct wm8994 *wm8994, unsigned short reg)
+{
+ unsigned short val;
+ int ret;
+
+ mutex_lock(&wm8994->io_lock);
+
+ ret = wm8994_read(wm8994, reg, 2, &val);
+
+ mutex_unlock(&wm8994->io_lock);
+
+ if (ret < 0)
+ return ret;
+ else
+ return val;
+}
+EXPORT_SYMBOL_GPL(wm8994_reg_read);
+
+/**
+ * wm8994_bulk_read: Read multiple WM8994 registers
+ *
+ * @wm8994: Device to read from
+ * @reg: First register
+ * @count: Number of registers
+ * @buf: Buffer to fill.
+ */
+int wm8994_bulk_read(struct wm8994 *wm8994, unsigned short reg,
+ int count, u16 *buf)
+{
+ int ret;
+
+ mutex_lock(&wm8994->io_lock);
+
+ ret = wm8994_read(wm8994, reg, count * 2, buf);
+
+ mutex_unlock(&wm8994->io_lock);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(wm8994_bulk_read);
+
+static int wm8994_write(struct wm8994 *wm8994, unsigned short reg,
+ int bytes, void *src)
+{
+ u16 *buf = src;
+ int i;
+
+ BUG_ON(bytes % 2);
+ BUG_ON(bytes <= 0);
+
+ for (i = 0; i < bytes / 2; i++) {
+ dev_vdbg(wm8994->dev, "Write %04x to R%d(0x%x)\n",
+ buf[i], reg + i, reg + i);
+
+ buf[i] = cpu_to_be16(buf[i]);
+ }
+
+ return wm8994->write_dev(wm8994, reg, bytes, src);
+}
+
+/**
+ * wm8994_reg_write: Write a single WM8994 register.
+ *
+ * @wm8994: Device to write to.
+ * @reg: Register to write to.
+ * @val: Value to write.
+ */
+int wm8994_reg_write(struct wm8994 *wm8994, unsigned short reg,
+ unsigned short val)
+{
+ int ret;
+
+ mutex_lock(&wm8994->io_lock);
+
+ ret = wm8994_write(wm8994, reg, 2, &val);
+
+ mutex_unlock(&wm8994->io_lock);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(wm8994_reg_write);
+
+/**
+ * wm8994_set_bits: Set the value of a bitfield in a WM8994 register
+ *
+ * @wm8994: Device to write to.
+ * @reg: Register to write to.
+ * @mask: Mask of bits to set.
+ * @val: Value to set (unshifted)
+ */
+int wm8994_set_bits(struct wm8994 *wm8994, unsigned short reg,
+ unsigned short mask, unsigned short val)
+{
+ int ret;
+ u16 r;
+
+ mutex_lock(&wm8994->io_lock);
+
+ ret = wm8994_read(wm8994, reg, 2, &r);
+ if (ret < 0)
+ goto out;
+
+ r &= ~mask;
+ r |= val;
+
+ ret = wm8994_write(wm8994, reg, 2, &r);
+
+out:
+ mutex_unlock(&wm8994->io_lock);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(wm8994_set_bits);
+
+static struct mfd_cell wm8994_regulator_devs[] = {
+ { .name = "wm8994-ldo", .id = 1 },
+ { .name = "wm8994-ldo", .id = 2 },
+};
+
+static struct mfd_cell wm8994_devs[] = {
+ { .name = "wm8994-codec" },
+ { .name = "wm8994-gpio" },
+};
+
+/*
+ * Supplies for the main bulk of CODEC; the LDO supplies are ignored
+ * and should be handled via the standard regulator API supply
+ * management.
+ */
+static const char *wm8994_main_supplies[] = {
+ "DBVDD",
+ "DCVDD",
+ "AVDD1",
+ "AVDD2",
+ "CPVDD",
+ "SPKVDD1",
+ "SPKVDD2",
+};
+
+#ifdef CONFIG_PM
+static int wm8994_device_suspend(struct device *dev)
+{
+ struct wm8994 *wm8994 = dev_get_drvdata(dev);
+ int ret;
+
+ /* GPIO configuration state is saved here since we may be configuring
+ * the GPIO alternate functions even if we're not using the gpiolib
+ * driver for them.
+ */
+ ret = wm8994_read(wm8994, WM8994_GPIO_1, WM8994_NUM_GPIO_REGS * 2,
+ &wm8994->gpio_regs);
+ if (ret < 0)
+ dev_err(dev, "Failed to save GPIO registers: %d\n", ret);
+
+ /* For similar reasons we also stash the regulator states */
+ ret = wm8994_read(wm8994, WM8994_LDO_1, WM8994_NUM_LDO_REGS * 2,
+ &wm8994->ldo_regs);
+ if (ret < 0)
+ dev_err(dev, "Failed to save LDO registers: %d\n", ret);
+
+ ret = regulator_bulk_disable(ARRAY_SIZE(wm8994_main_supplies),
+ wm8994->supplies);
+ if (ret != 0) {
+ dev_err(dev, "Failed to disable supplies: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int wm8994_device_resume(struct device *dev)
+{
+ struct wm8994 *wm8994 = dev_get_drvdata(dev);
+ int ret;
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(wm8994_main_supplies),
+ wm8994->supplies);
+ if (ret != 0) {
+ dev_err(dev, "Failed to enable supplies: %d\n", ret);
+ return ret;
+ }
+
+ ret = wm8994_write(wm8994, WM8994_LDO_1, WM8994_NUM_LDO_REGS * 2,
+ &wm8994->ldo_regs);
+ if (ret < 0)
+ dev_err(dev, "Failed to restore LDO registers: %d\n", ret);
+
+ ret = wm8994_write(wm8994, WM8994_GPIO_1, WM8994_NUM_GPIO_REGS * 2,
+ &wm8994->gpio_regs);
+ if (ret < 0)
+ dev_err(dev, "Failed to restore GPIO registers: %d\n", ret);
+
+ return 0;
+}
+#endif
+
+#ifdef CONFIG_REGULATOR
+static int wm8994_ldo_in_use(struct wm8994_pdata *pdata, int ldo)
+{
+ struct wm8994_ldo_pdata *ldo_pdata;
+
+ if (!pdata)
+ return 0;
+
+ ldo_pdata = &pdata->ldo[ldo];
+
+ if (!ldo_pdata->init_data)
+ return 0;
+
+ return ldo_pdata->init_data->num_consumer_supplies != 0;
+}
+#else
+static int wm8994_ldo_in_use(struct wm8994_pdata *pdata, int ldo)
+{
+ return 0;
+}
+#endif
+
+/*
+ * Instantiate the generic non-control parts of the device.
+ */
+static int wm8994_device_init(struct wm8994 *wm8994, unsigned long id, int irq)
+{
+ struct wm8994_pdata *pdata = wm8994->dev->platform_data;
+ int ret, i;
+
+ mutex_init(&wm8994->io_lock);
+ dev_set_drvdata(wm8994->dev, wm8994);
+
+ /* Add the on-chip regulators first for bootstrapping */
+ ret = mfd_add_devices(wm8994->dev, -1,
+ wm8994_regulator_devs,
+ ARRAY_SIZE(wm8994_regulator_devs),
+ NULL, 0);
+ if (ret != 0) {
+ dev_err(wm8994->dev, "Failed to add children: %d\n", ret);
+ goto err;
+ }
+
+ wm8994->supplies = kzalloc(sizeof(struct regulator_bulk_data) *
+ ARRAY_SIZE(wm8994_main_supplies),
+ GFP_KERNEL);
+ if (!wm8994->supplies)
+ goto err;
+
+ for (i = 0; i < ARRAY_SIZE(wm8994_main_supplies); i++)
+ wm8994->supplies[i].supply = wm8994_main_supplies[i];
+
+ ret = regulator_bulk_get(wm8994->dev, ARRAY_SIZE(wm8994_main_supplies),
+ wm8994->supplies);
+ if (ret != 0) {
+ dev_err(wm8994->dev, "Failed to get supplies: %d\n", ret);
+ goto err_supplies;
+ }
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(wm8994_main_supplies),
+ wm8994->supplies);
+ if (ret != 0) {
+ dev_err(wm8994->dev, "Failed to enable supplies: %d\n", ret);
+ goto err_get;
+ }
+
+ ret = wm8994_reg_read(wm8994, WM8994_SOFTWARE_RESET);
+ if (ret < 0) {
+ dev_err(wm8994->dev, "Failed to read ID register\n");
+ goto err_enable;
+ }
+ if (ret != 0x8994) {
+ dev_err(wm8994->dev, "Device is not a WM8994, ID is %x\n",
+ ret);
+ ret = -EINVAL;
+ goto err_enable;
+ }
+
+ ret = wm8994_reg_read(wm8994, WM8994_CHIP_REVISION);
+ if (ret < 0) {
+ dev_err(wm8994->dev, "Failed to read revision register: %d\n",
+ ret);
+ goto err_enable;
+ }
+
+ switch (ret) {
+ case 0:
+ case 1:
+ dev_warn(wm8994->dev, "revision %c not fully supported\n",
+ 'A' + ret);
+ break;
+ default:
+ dev_info(wm8994->dev, "revision %c\n", 'A' + ret);
+ break;
+ }
+
+
+ if (pdata) {
+ wm8994->gpio_base = pdata->gpio_base;
+
+ /* GPIO configuration is only applied if it's non-zero */
+ for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) {
+ if (pdata->gpio_defaults[i]) {
+ wm8994_set_bits(wm8994, WM8994_GPIO_1 + i,
+ 0xffff,
+ pdata->gpio_defaults[i]);
+ }
+ }
+ }
+
+ /* In some system designs where the regulators are not in use,
+ * we can achieve a small reduction in leakage currents by
+ * floating LDO outputs. This bit makes no difference if the
+ * LDOs are enabled, it only affects cases where the LDOs were
+ * in operation and are then disabled.
+ */
+ for (i = 0; i < WM8994_NUM_LDO_REGS; i++) {
+ if (wm8994_ldo_in_use(pdata, i))
+ wm8994_set_bits(wm8994, WM8994_LDO_1 + i,
+ WM8994_LDO1_DISCH, WM8994_LDO1_DISCH);
+ else
+ wm8994_set_bits(wm8994, WM8994_LDO_1 + i,
+ WM8994_LDO1_DISCH, 0);
+ }
+
+ ret = mfd_add_devices(wm8994->dev, -1,
+ wm8994_devs, ARRAY_SIZE(wm8994_devs),
+ NULL, 0);
+ if (ret != 0) {
+ dev_err(wm8994->dev, "Failed to add children: %d\n", ret);
+ goto err_enable;
+ }
+
+ return 0;
+
+err_enable:
+ regulator_bulk_disable(ARRAY_SIZE(wm8994_main_supplies),
+ wm8994->supplies);
+err_get:
+ regulator_bulk_free(ARRAY_SIZE(wm8994_main_supplies), wm8994->supplies);
+err_supplies:
+ kfree(wm8994->supplies);
+err:
+ mfd_remove_devices(wm8994->dev);
+ kfree(wm8994);
+ return ret;
+}
+
+static void wm8994_device_exit(struct wm8994 *wm8994)
+{
+ mfd_remove_devices(wm8994->dev);
+ regulator_bulk_disable(ARRAY_SIZE(wm8994_main_supplies),
+ wm8994->supplies);
+ regulator_bulk_free(ARRAY_SIZE(wm8994_main_supplies), wm8994->supplies);
+ kfree(wm8994->supplies);
+ kfree(wm8994);
+}
+
+static int wm8994_i2c_read_device(struct wm8994 *wm8994, unsigned short reg,
+ int bytes, void *dest)
+{
+ struct i2c_client *i2c = wm8994->control_data;
+ int ret;
+ u16 r = cpu_to_be16(reg);
+
+ ret = i2c_master_send(i2c, (unsigned char *)&r, 2);
+ if (ret < 0)
+ return ret;
+ if (ret != 2)
+ return -EIO;
+
+ ret = i2c_master_recv(i2c, dest, bytes);
+ if (ret < 0)
+ return ret;
+ if (ret != bytes)
+ return -EIO;
+ return 0;
+}
+
+/* Currently we allocate the write buffer on the stack; this is OK for
+ * small writes - if we need to do large writes this will need to be
+ * revised.
+ */
+static int wm8994_i2c_write_device(struct wm8994 *wm8994, unsigned short reg,
+ int bytes, void *src)
+{
+ struct i2c_client *i2c = wm8994->control_data;
+ unsigned char msg[bytes + 2];
+ int ret;
+
+ reg = cpu_to_be16(reg);
+ memcpy(&msg[0], &reg, 2);
+ memcpy(&msg[2], src, bytes);
+
+ ret = i2c_master_send(i2c, msg, bytes + 2);
+ if (ret < 0)
+ return ret;
+ if (ret < bytes + 2)
+ return -EIO;
+
+ return 0;
+}
+
+static int wm8994_i2c_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
+{
+ struct wm8994 *wm8994;
+
+ wm8994 = kzalloc(sizeof(struct wm8994), GFP_KERNEL);
+ if (wm8994 == NULL) {
+ kfree(i2c);
+ return -ENOMEM;
+ }
+
+ i2c_set_clientdata(i2c, wm8994);
+ wm8994->dev = &i2c->dev;
+ wm8994->control_data = i2c;
+ wm8994->read_dev = wm8994_i2c_read_device;
+ wm8994->write_dev = wm8994_i2c_write_device;
+
+ return wm8994_device_init(wm8994, id->driver_data, i2c->irq);
+}
+
+static int wm8994_i2c_remove(struct i2c_client *i2c)
+{
+ struct wm8994 *wm8994 = i2c_get_clientdata(i2c);
+
+ wm8994_device_exit(wm8994);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int wm8994_i2c_suspend(struct i2c_client *i2c, pm_message_t state)
+{
+ return wm8994_device_suspend(&i2c->dev);
+}
+
+static int wm8994_i2c_resume(struct i2c_client *i2c)
+{
+ return wm8994_device_resume(&i2c->dev);
+}
+#else
+#define wm8994_i2c_suspend NULL
+#define wm8994_i2c_resume NULL
+#endif
+
+static const struct i2c_device_id wm8994_i2c_id[] = {
+ { "wm8994", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, wm8994_i2c_id);
+
+static struct i2c_driver wm8994_i2c_driver = {
+ .driver = {
+ .name = "wm8994",
+ .owner = THIS_MODULE,
+ },
+ .probe = wm8994_i2c_probe,
+ .remove = wm8994_i2c_remove,
+ .suspend = wm8994_i2c_suspend,
+ .resume = wm8994_i2c_resume,
+ .id_table = wm8994_i2c_id,
+};
+
+static int __init wm8994_i2c_init(void)
+{
+ int ret;
+
+ ret = i2c_add_driver(&wm8994_i2c_driver);
+ if (ret != 0)
+ pr_err("Failed to register wm8994 I2C driver: %d\n", ret);
+
+ return ret;
+}
+module_init(wm8994_i2c_init);
+
+static void __exit wm8994_i2c_exit(void)
+{
+ i2c_del_driver(&wm8994_i2c_driver);
+}
+module_exit(wm8994_i2c_exit);
+
+MODULE_DESCRIPTION("Core support for the WM8994 audio CODEC");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-24 05:31:04 +0000