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-rw-r--r--drivers/mfd/Kconfig42
-rw-r--r--drivers/mfd/Makefile6
-rw-r--r--drivers/mfd/ab3100-core.c62
-rw-r--r--drivers/mfd/ab3100-otp.c268
-rw-r--r--drivers/mfd/dm355evm_msp.c12
-rw-r--r--drivers/mfd/ezx-pcap.c105
-rw-r--r--drivers/mfd/mc13783-core.c427
-rw-r--r--drivers/mfd/mfd-core.c2
-rw-r--r--drivers/mfd/pcf50633-adc.c32
-rw-r--r--drivers/mfd/pcf50633-core.c5
-rw-r--r--drivers/mfd/twl4030-core.c23
-rw-r--r--drivers/mfd/twl4030-irq.c2
-rw-r--r--drivers/mfd/twl4030-power.c472
-rw-r--r--drivers/mfd/wm831x-core.c1549
-rw-r--r--drivers/mfd/wm831x-irq.c559
-rw-r--r--drivers/mfd/wm831x-otp.c83
-rw-r--r--drivers/mfd/wm8350-core.c27
17 files changed, 3579 insertions, 97 deletions
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 491ac0f800d..570be139f9d 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -108,6 +108,19 @@ config TWL4030_CORE
high speed USB OTG transceiver, an audio codec (on most
versions) and many other features.
+config TWL4030_POWER
+ bool "Support power resources on TWL4030 family chips"
+ depends on TWL4030_CORE && ARM
+ help
+ Say yes here if you want to use the power resources on the
+ TWL4030 family chips. Most of these resources are regulators,
+ which have a separate driver; some are control signals, such
+ as clock request handshaking.
+
+ This driver uses board-specific data to initialize the resources
+ and load scripts controling which resources are switched off/on
+ or reset when a sleep, wakeup or warm reset event occurs.
+
config MFD_TMIO
bool
default n
@@ -157,6 +170,16 @@ config MFD_WM8400
the device, additional drivers must be enabled in order to use
the functionality of the device.
+config MFD_WM831X
+ tristate "Support Wolfson Microelectronics WM831x PMICs"
+ select MFD_CORE
+ depends on I2C
+ help
+ Support for the Wolfson Microelecronics WM831x PMICs. This
+ driver provides common support for accessing the device,
+ additional drivers must be enabled in order to use the
+ functionality of the device.
+
config MFD_WM8350
tristate
@@ -228,6 +251,16 @@ config MFD_PCF50633
facilities, and registers devices for the various functions
so that function-specific drivers can bind to them.
+config MFD_MC13783
+ tristate "Support Freescale MC13783"
+ depends on SPI_MASTER
+ select MFD_CORE
+ help
+ Support for the Freescale (Atlas) MC13783 PMIC and audio CODEC.
+ This driver provides common support for accessing the device,
+ additional drivers must be enabled in order to use the
+ functionality of the device.
+
config PCF50633_ADC
tristate "Support for NXP PCF50633 ADC"
depends on MFD_PCF50633
@@ -256,6 +289,15 @@ config AB3100_CORE
LEDs, vibrator, system power and temperature, power management
and ALSA sound.
+config AB3100_OTP
+ tristate "ST-Ericsson AB3100 OTP functions"
+ depends on AB3100_CORE
+ default y if AB3100_CORE
+ help
+ Select this to enable the AB3100 Mixed Signal IC OTP (one-time
+ programmable memory) support. This exposes a sysfs file to read
+ out OTP values.
+
config EZX_PCAP
bool "PCAP Support"
depends on GENERIC_HARDIRQS && SPI_MASTER
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 6f8a9a1af20..f3b277b90d4 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -15,6 +15,8 @@ obj-$(CONFIG_MFD_TC6387XB) += tc6387xb.o
obj-$(CONFIG_MFD_TC6393XB) += tc6393xb.o
obj-$(CONFIG_MFD_WM8400) += wm8400-core.o
+wm831x-objs := wm831x-core.o wm831x-irq.o wm831x-otp.o
+obj-$(CONFIG_MFD_WM831X) += wm831x.o
wm8350-objs := wm8350-core.o wm8350-regmap.o wm8350-gpio.o
obj-$(CONFIG_MFD_WM8350) += wm8350.o
obj-$(CONFIG_MFD_WM8350_I2C) += wm8350-i2c.o
@@ -23,6 +25,9 @@ obj-$(CONFIG_TPS65010) += tps65010.o
obj-$(CONFIG_MENELAUS) += menelaus.o
obj-$(CONFIG_TWL4030_CORE) += twl4030-core.o twl4030-irq.o
+obj-$(CONFIG_TWL4030_POWER) += twl4030-power.o
+
+obj-$(CONFIG_MFD_MC13783) += mc13783-core.o
obj-$(CONFIG_MFD_CORE) += mfd-core.o
@@ -44,3 +49,4 @@ obj-$(CONFIG_MFD_PCF50633) += pcf50633-core.o
obj-$(CONFIG_PCF50633_ADC) += pcf50633-adc.o
obj-$(CONFIG_PCF50633_GPIO) += pcf50633-gpio.o
obj-$(CONFIG_AB3100_CORE) += ab3100-core.o
+obj-$(CONFIG_AB3100_OTP) += ab3100-otp.o
diff --git a/drivers/mfd/ab3100-core.c b/drivers/mfd/ab3100-core.c
index 13e7d7bfe85..c533f86ff5e 100644
--- a/drivers/mfd/ab3100-core.c
+++ b/drivers/mfd/ab3100-core.c
@@ -14,7 +14,6 @@
#include <linux/platform_device.h>
#include <linux/device.h>
#include <linux/interrupt.h>
-#include <linux/workqueue.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/uaccess.h>
@@ -77,7 +76,7 @@ u8 ab3100_get_chip_type(struct ab3100 *ab3100)
}
EXPORT_SYMBOL(ab3100_get_chip_type);
-int ab3100_set_register(struct ab3100 *ab3100, u8 reg, u8 regval)
+int ab3100_set_register_interruptible(struct ab3100 *ab3100, u8 reg, u8 regval)
{
u8 regandval[2] = {reg, regval};
int err;
@@ -107,9 +106,10 @@ int ab3100_set_register(struct ab3100 *ab3100, u8 reg, u8 regval)
err = 0;
}
mutex_unlock(&ab3100->access_mutex);
- return 0;
+ return err;
}
-EXPORT_SYMBOL(ab3100_set_register);
+EXPORT_SYMBOL(ab3100_set_register_interruptible);
+
/*
* The test registers exist at an I2C bus address up one
@@ -118,7 +118,7 @@ EXPORT_SYMBOL(ab3100_set_register);
* anyway. It's currently only used from this file so declare
* it static and do not export.
*/
-static int ab3100_set_test_register(struct ab3100 *ab3100,
+static int ab3100_set_test_register_interruptible(struct ab3100 *ab3100,
u8 reg, u8 regval)
{
u8 regandval[2] = {reg, regval};
@@ -148,7 +148,8 @@ static int ab3100_set_test_register(struct ab3100 *ab3100,
return err;
}
-int ab3100_get_register(struct ab3100 *ab3100, u8 reg, u8 *regval)
+
+int ab3100_get_register_interruptible(struct ab3100 *ab3100, u8 reg, u8 *regval)
{
int err;
@@ -202,9 +203,10 @@ int ab3100_get_register(struct ab3100 *ab3100, u8 reg, u8 *regval)
mutex_unlock(&ab3100->access_mutex);
return err;
}
-EXPORT_SYMBOL(ab3100_get_register);
+EXPORT_SYMBOL(ab3100_get_register_interruptible);
-int ab3100_get_register_page(struct ab3100 *ab3100,
+
+int ab3100_get_register_page_interruptible(struct ab3100 *ab3100,
u8 first_reg, u8 *regvals, u8 numregs)
{
int err;
@@ -258,9 +260,10 @@ int ab3100_get_register_page(struct ab3100 *ab3100,
mutex_unlock(&ab3100->access_mutex);
return err;
}
-EXPORT_SYMBOL(ab3100_get_register_page);
+EXPORT_SYMBOL(ab3100_get_register_page_interruptible);
+
-int ab3100_mask_and_set_register(struct ab3100 *ab3100,
+int ab3100_mask_and_set_register_interruptible(struct ab3100 *ab3100,
u8 reg, u8 andmask, u8 ormask)
{
u8 regandval[2] = {reg, 0};
@@ -328,7 +331,8 @@ int ab3100_mask_and_set_register(struct ab3100 *ab3100,
mutex_unlock(&ab3100->access_mutex);
return err;
}
-EXPORT_SYMBOL(ab3100_mask_and_set_register);
+EXPORT_SYMBOL(ab3100_mask_and_set_register_interruptible);
+
/*
* Register a simple callback for handling any AB3100 events.
@@ -371,7 +375,7 @@ static void ab3100_work(struct work_struct *work)
u32 fatevent;
int err;
- err = ab3100_get_register_page(ab3100, AB3100_EVENTA1,
+ err = ab3100_get_register_page_interruptible(ab3100, AB3100_EVENTA1,
event_regs, 3);
if (err)
goto err_event_wq;
@@ -417,7 +421,7 @@ static irqreturn_t ab3100_irq_handler(int irq, void *data)
* stuff and we will re-enable the interrupts once th
* worker has finished.
*/
- disable_irq(ab3100->i2c_client->irq);
+ disable_irq_nosync(irq);
schedule_work(&ab3100->work);
return IRQ_HANDLED;
}
@@ -435,7 +439,7 @@ static int ab3100_registers_print(struct seq_file *s, void *p)
seq_printf(s, "AB3100 registers:\n");
for (reg = 0; reg < 0xff; reg++) {
- ab3100_get_register(ab3100, reg, &value);
+ ab3100_get_register_interruptible(ab3100, reg, &value);
seq_printf(s, "[0x%x]: 0x%x\n", reg, value);
}
return 0;
@@ -465,14 +469,14 @@ static int ab3100_get_set_reg_open_file(struct inode *inode, struct file *file)
return 0;
}
-static int ab3100_get_set_reg(struct file *file,
- const char __user *user_buf,
- size_t count, loff_t *ppos)
+static ssize_t ab3100_get_set_reg(struct file *file,
+ const char __user *user_buf,
+ size_t count, loff_t *ppos)
{
struct ab3100_get_set_reg_priv *priv = file->private_data;
struct ab3100 *ab3100 = priv->ab3100;
char buf[32];
- int buf_size;
+ ssize_t buf_size;
int regp;
unsigned long user_reg;
int err;
@@ -515,7 +519,7 @@ static int ab3100_get_set_reg(struct file *file,
u8 reg = (u8) user_reg;
u8 regvalue;
- ab3100_get_register(ab3100, reg, &regvalue);
+ ab3100_get_register_interruptible(ab3100, reg, &regvalue);
dev_info(ab3100->dev,
"debug read AB3100 reg[0x%02x]: 0x%02x\n",
@@ -547,8 +551,8 @@ static int ab3100_get_set_reg(struct file *file,
return -EINVAL;
value = (u8) user_value;
- ab3100_set_register(ab3100, reg, value);
- ab3100_get_register(ab3100, reg, &regvalue);
+ ab3100_set_register_interruptible(ab3100, reg, value);
+ ab3100_get_register_interruptible(ab3100, reg, &regvalue);
dev_info(ab3100->dev,
"debug write reg[0x%02x] with 0x%02x, "
@@ -662,7 +666,7 @@ ab3100_init_settings[] = {
.setting = 0x01
}, {
.abreg = AB3100_IMRB1,
- .setting = 0xFF
+ .setting = 0xBF
}, {
.abreg = AB3100_IMRB2,
.setting = 0xFF
@@ -696,7 +700,7 @@ static int __init ab3100_setup(struct ab3100 *ab3100)
int i;
for (i = 0; i < ARRAY_SIZE(ab3100_init_settings); i++) {
- err = ab3100_set_register(ab3100,
+ err = ab3100_set_register_interruptible(ab3100,
ab3100_init_settings[i].abreg,
ab3100_init_settings[i].setting);
if (err)
@@ -705,14 +709,14 @@ static int __init ab3100_setup(struct ab3100 *ab3100)
/*
* Special trick to make the AB3100 use the 32kHz clock (RTC)
- * bit 3 in test registe 0x02 is a special, undocumented test
+ * bit 3 in test register 0x02 is a special, undocumented test
* register bit that only exist in AB3100 P1E
*/
if (ab3100->chip_id == 0xc4) {
dev_warn(ab3100->dev,
"AB3100 P1E variant detected, "
"forcing chip to 32KHz\n");
- err = ab3100_set_test_register(ab3100, 0x02, 0x08);
+ err = ab3100_set_test_register_interruptible(ab3100, 0x02, 0x08);
}
exit_no_setup:
@@ -833,6 +837,8 @@ static int __init ab3100_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct ab3100 *ab3100;
+ struct ab3100_platform_data *ab3100_plf_data =
+ client->dev.platform_data;
int err;
int i;
@@ -852,8 +858,8 @@ static int __init ab3100_probe(struct i2c_client *client,
i2c_set_clientdata(client, ab3100);
/* Read chip ID register */
- err = ab3100_get_register(ab3100, AB3100_CID,
- &ab3100->chip_id);
+ err = ab3100_get_register_interruptible(ab3100, AB3100_CID,
+ &ab3100->chip_id);
if (err) {
dev_err(&client->dev,
"could not communicate with the AB3100 analog "
@@ -916,6 +922,8 @@ static int __init ab3100_probe(struct i2c_client *client,
for (i = 0; i < ARRAY_SIZE(ab3100_platform_devs); i++) {
ab3100_platform_devs[i]->dev.parent =
&client->dev;
+ ab3100_platform_devs[i]->dev.platform_data =
+ ab3100_plf_data;
platform_set_drvdata(ab3100_platform_devs[i], ab3100);
}
diff --git a/drivers/mfd/ab3100-otp.c b/drivers/mfd/ab3100-otp.c
new file mode 100644
index 00000000000..0499b2031a2
--- /dev/null
+++ b/drivers/mfd/ab3100-otp.c
@@ -0,0 +1,268 @@
+/*
+ * drivers/mfd/ab3100_otp.c
+ *
+ * Copyright (C) 2007-2009 ST-Ericsson AB
+ * License terms: GNU General Public License (GPL) version 2
+ * Driver to read out OTP from the AB3100 Mixed-signal circuit
+ * Author: Linus Walleij <linus.walleij@stericsson.com>
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/mfd/ab3100.h>
+#include <linux/debugfs.h>
+
+/* The OTP registers */
+#define AB3100_OTP0 0xb0
+#define AB3100_OTP1 0xb1
+#define AB3100_OTP2 0xb2
+#define AB3100_OTP3 0xb3
+#define AB3100_OTP4 0xb4
+#define AB3100_OTP5 0xb5
+#define AB3100_OTP6 0xb6
+#define AB3100_OTP7 0xb7
+#define AB3100_OTPP 0xbf
+
+/**
+ * struct ab3100_otp
+ * @dev containing device
+ * @ab3100 a pointer to the parent ab3100 device struct
+ * @locked whether the OTP is locked, after locking, no more bits
+ * can be changed but before locking it is still possible
+ * to change bits from 1->0.
+ * @freq clocking frequency for the OTP, this frequency is either
+ * 32768Hz or 1MHz/30
+ * @paf product activation flag, indicates whether this is a real
+ * product (paf true) or a lab board etc (paf false)
+ * @imeich if this is set it is possible to override the
+ * IMEI number found in the tac, fac and svn fields with
+ * (secured) software
+ * @cid customer ID
+ * @tac type allocation code of the IMEI
+ * @fac final assembly code of the IMEI
+ * @svn software version number of the IMEI
+ * @debugfs a debugfs file used when dumping to file
+ */
+struct ab3100_otp {
+ struct device *dev;
+ struct ab3100 *ab3100;
+ bool locked;
+ u32 freq;
+ bool paf;
+ bool imeich;
+ u16 cid:14;
+ u32 tac:20;
+ u8 fac;
+ u32 svn:20;
+ struct dentry *debugfs;
+};
+
+static int __init ab3100_otp_read(struct ab3100_otp *otp)
+{
+ struct ab3100 *ab = otp->ab3100;
+ u8 otpval[8];
+ u8 otpp;
+ int err;
+
+ err = ab3100_get_register_interruptible(ab, AB3100_OTPP, &otpp);
+ if (err) {
+ dev_err(otp->dev, "unable to read OTPP register\n");
+ return err;
+ }
+
+ err = ab3100_get_register_page_interruptible(ab, AB3100_OTP0,
+ otpval, 8);
+ if (err) {
+ dev_err(otp->dev, "unable to read OTP register page\n");
+ return err;
+ }
+
+ /* Cache OTP properties, they never change by nature */
+ otp->locked = (otpp & 0x80);
+ otp->freq = (otpp & 0x40) ? 32768 : 34100;
+ otp->paf = (otpval[1] & 0x80);
+ otp->imeich = (otpval[1] & 0x40);
+ otp->cid = ((otpval[1] << 8) | otpval[0]) & 0x3fff;
+ otp->tac = ((otpval[4] & 0x0f) << 16) | (otpval[3] << 8) | otpval[2];
+ otp->fac = ((otpval[5] & 0x0f) << 4) | (otpval[4] >> 4);
+ otp->svn = (otpval[7] << 12) | (otpval[6] << 4) | (otpval[5] >> 4);
+ return 0;
+}
+
+/*
+ * 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)
+{
+ 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);
+ seq_printf(s, "PAF is %s\n", otp->paf ? "SET" : "NOT SET");
+ seq_printf(s, "IMEI is %s\n", otp->imeich ?
+ "CHANGEABLE" : "NOT CHANGEABLE");
+ seq_printf(s, "CID: 0x%04x (decimal: %d)\n", otp->cid, otp->cid);
+ seq_printf(s, "IMEI: %u-%u-%u\n", otp->tac, otp->fac, otp->svn);
+ return 0;
+}
+
+static int ab3100_otp_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, ab3100_otp_show, inode->i_private);
+}
+
+static const struct file_operations ab3100_otp_operations = {
+ .open = ab3100_otp_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int __init ab3100_otp_init_debugfs(struct device *dev,
+ struct ab3100_otp *otp)
+{
+ otp->debugfs = debugfs_create_file("ab3100_otp", S_IFREG | S_IRUGO,
+ NULL, otp,
+ &ab3100_otp_operations);
+ if (!otp->debugfs) {
+ dev_err(dev, "AB3100 debugfs OTP file registration failed!\n");
+ return err;
+ }
+}
+
+static void __exit ab3100_otp_exit_debugfs(struct ab3100_otp *otp)
+{
+ debugfs_remove_file(otp->debugfs);
+}
+#else
+/* Compile this out if debugfs not selected */
+static inline int __init ab3100_otp_init_debugfs(struct device *dev,
+ struct ab3100_otp *otp)
+{
+ return 0;
+}
+
+static inline void __exit ab3100_otp_exit_debugfs(struct ab3100_otp *otp)
+{
+}
+#endif
+
+#define SHOW_AB3100_ATTR(name) \
+static ssize_t ab3100_otp_##name##_show(struct device *dev, \
+ struct device_attribute *attr, \
+ char *buf) \
+{\
+ struct ab3100_otp *otp = dev_get_drvdata(dev); \
+ return sprintf(buf, "%u\n", otp->name); \
+}
+
+SHOW_AB3100_ATTR(locked)
+SHOW_AB3100_ATTR(freq)
+SHOW_AB3100_ATTR(paf)
+SHOW_AB3100_ATTR(imeich)
+SHOW_AB3100_ATTR(cid)
+SHOW_AB3100_ATTR(fac)
+SHOW_AB3100_ATTR(tac)
+SHOW_AB3100_ATTR(svn)
+
+static struct device_attribute ab3100_otp_attrs[] = {
+ __ATTR(locked, S_IRUGO, ab3100_otp_locked_show, NULL),
+ __ATTR(freq, S_IRUGO, ab3100_otp_freq_show, NULL),
+ __ATTR(paf, S_IRUGO, ab3100_otp_paf_show, NULL),
+ __ATTR(imeich, S_IRUGO, ab3100_otp_imeich_show, NULL),
+ __ATTR(cid, S_IRUGO, ab3100_otp_cid_show, NULL),
+ __ATTR(fac, S_IRUGO, ab3100_otp_fac_show, NULL),
+ __ATTR(tac, S_IRUGO, ab3100_otp_tac_show, NULL),
+ __ATTR(svn, S_IRUGO, ab3100_otp_svn_show, NULL),
+};
+
+static int __init ab3100_otp_probe(struct platform_device *pdev)
+{
+ struct ab3100_otp *otp;
+ int err = 0;
+ int i;
+
+ otp = kzalloc(sizeof(struct ab3100_otp), GFP_KERNEL);
+ if (!otp) {
+ dev_err(&pdev->dev, "could not allocate AB3100 OTP device\n");
+ return -ENOMEM;
+ }
+ otp->dev = &pdev->dev;
+
+ /* Replace platform data coming in with a local struct */
+ otp->ab3100 = platform_get_drvdata(pdev);
+ platform_set_drvdata(pdev, otp);
+
+ err = ab3100_otp_read(otp);
+ if (err)
+ return err;
+
+ dev_info(&pdev->dev, "AB3100 OTP readout registered\n");
+
+ /* sysfs entries */
+ for (i = 0; i < ARRAY_SIZE(ab3100_otp_attrs); i++) {
+ err = device_create_file(&pdev->dev,
+ &ab3100_otp_attrs[i]);
+ if (err)
+ goto out_no_sysfs;
+ }
+
+ /* debugfs entries */
+ err = ab3100_otp_init_debugfs(&pdev->dev, otp);
+ if (err)
+ goto out_no_debugfs;
+
+ return 0;
+
+out_no_sysfs:
+ for (i = 0; i < ARRAY_SIZE(ab3100_otp_attrs); i++)
+ device_remove_file(&pdev->dev,
+ &ab3100_otp_attrs[i]);
+out_no_debugfs:
+ kfree(otp);
+ return err;
+}
+
+static int __exit ab3100_otp_remove(struct platform_device *pdev)
+{
+ struct ab3100_otp *otp = platform_get_drvdata(pdev);
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(ab3100_otp_attrs); i++)
+ device_remove_file(&pdev->dev,
+ &ab3100_otp_attrs[i]);
+ ab3100_otp_exit_debugfs(otp);
+ kfree(otp);
+ return 0;
+}
+
+static struct platform_driver ab3100_otp_driver = {
+ .driver = {
+ .name = "ab3100-otp",
+ .owner = THIS_MODULE,
+ },
+ .remove = __exit_p(ab3100_otp_remove),
+};
+
+static int __init ab3100_otp_init(void)
+{
+ return platform_driver_probe(&ab3100_otp_driver,
+ ab3100_otp_probe);
+}
+
+static void __exit ab3100_otp_exit(void)
+{
+ platform_driver_unregister(&ab3100_otp_driver);
+}
+
+module_init(ab3100_otp_init);
+module_exit(ab3100_otp_exit);
+
+MODULE_AUTHOR("Linus Walleij <linus.walleij@stericsson.com>");
+MODULE_DESCRIPTION("AB3100 OTP Readout Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mfd/dm355evm_msp.c b/drivers/mfd/dm355evm_msp.c
index 5b6e58a3ba4..3d4a861976c 100644
--- a/drivers/mfd/dm355evm_msp.c
+++ b/drivers/mfd/dm355evm_msp.c
@@ -107,8 +107,16 @@ static const u8 msp_gpios[] = {
MSP_GPIO(2, SWITCH1), MSP_GPIO(3, SWITCH1),
MSP_GPIO(4, SWITCH1),
/* switches on MMC/SD sockets */
- MSP_GPIO(1, SDMMC), MSP_GPIO(2, SDMMC), /* mmc0 WP, nCD */
- MSP_GPIO(3, SDMMC), MSP_GPIO(4, SDMMC), /* mmc1 WP, nCD */
+ /*
+ * Note: EVMDM355_ECP_VA4.pdf suggests that Bit 2 and 4 should be
+ * checked for card detection. However on the EVM bit 1 and 3 gives
+ * this status, for 0 and 1 instance respectively. The pdf also
+ * suggests that Bit 1 and 3 should be checked for write protection.
+ * However on the EVM bit 2 and 4 gives this status,for 0 and 1
+ * instance respectively.
+ */
+ MSP_GPIO(2, SDMMC), MSP_GPIO(1, SDMMC), /* mmc0 WP, nCD */
+ MSP_GPIO(4, SDMMC), MSP_GPIO(3, SDMMC), /* mmc1 WP, nCD */
};
#define MSP_GPIO_REG(offset) (msp_gpios[(offset)] >> 3)
diff --git a/drivers/mfd/ezx-pcap.c b/drivers/mfd/ezx-pcap.c
index c1de4afa89a..016be4938e4 100644
--- a/drivers/mfd/ezx-pcap.c
+++ b/drivers/mfd/ezx-pcap.c
@@ -17,6 +17,7 @@
#include <linux/irq.h>
#include <linux/mfd/ezx-pcap.h>
#include <linux/spi/spi.h>
+#include <linux/gpio.h>
#define PCAP_ADC_MAXQ 8
struct pcap_adc_request {
@@ -106,11 +107,35 @@ int ezx_pcap_read(struct pcap_chip *pcap, u8 reg_num, u32 *value)
}
EXPORT_SYMBOL_GPL(ezx_pcap_read);
+int ezx_pcap_set_bits(struct pcap_chip *pcap, u8 reg_num, u32 mask, u32 val)
+{
+ int ret;
+ u32 tmp = PCAP_REGISTER_READ_OP_BIT |
+ (reg_num << PCAP_REGISTER_ADDRESS_SHIFT);
+
+ mutex_lock(&pcap->io_mutex);
+ ret = ezx_pcap_putget(pcap, &tmp);
+ if (ret)
+ goto out_unlock;
+
+ tmp &= (PCAP_REGISTER_VALUE_MASK & ~mask);
+ tmp |= (val & mask) | PCAP_REGISTER_WRITE_OP_BIT |
+ (reg_num << PCAP_REGISTER_ADDRESS_SHIFT);
+
+ ret = ezx_pcap_putget(pcap, &tmp);
+out_unlock:
+ mutex_unlock(&pcap->io_mutex);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(ezx_pcap_set_bits);
+
/* IRQ */
-static inline unsigned int irq2pcap(struct pcap_chip *pcap, int irq)
+int irq_to_pcap(struct pcap_chip *pcap, int irq)
{
- return 1 << (irq - pcap->irq_base);
+ return irq - pcap->irq_base;
}
+EXPORT_SYMBOL_GPL(irq_to_pcap);
int pcap_to_irq(struct pcap_chip *pcap, int irq)
{
@@ -122,7 +147,7 @@ static void pcap_mask_irq(unsigned int irq)
{
struct pcap_chip *pcap = get_irq_chip_data(irq);
- pcap->msr |= irq2pcap(pcap, irq);
+ pcap->msr |= 1 << irq_to_pcap(pcap, irq);
queue_work(pcap->workqueue, &pcap->msr_work);
}
@@ -130,7 +155,7 @@ static void pcap_unmask_irq(unsigned int irq)
{
struct pcap_chip *pcap = get_irq_chip_data(irq);
- pcap->msr &= ~irq2pcap(pcap, irq);
+ pcap->msr &= ~(1 << irq_to_pcap(pcap, irq));
queue_work(pcap->workqueue, &pcap->msr_work);
}
@@ -154,34 +179,38 @@ static void pcap_isr_work(struct work_struct *work)
u32 msr, isr, int_sel, service;
int irq;
- ezx_pcap_read(pcap, PCAP_REG_MSR, &msr);
- ezx_pcap_read(pcap, PCAP_REG_ISR, &isr);
+ do {
+ ezx_pcap_read(pcap, PCAP_REG_MSR, &msr);
+ ezx_pcap_read(pcap, PCAP_REG_ISR, &isr);
- /* We cant service/ack irqs that are assigned to port 2 */
- if (!(pdata->config & PCAP_SECOND_PORT)) {
- ezx_pcap_read(pcap, PCAP_REG_INT_SEL, &int_sel);
- isr &= ~int_sel;
- }
- ezx_pcap_write(pcap, PCAP_REG_ISR, isr);
+ /* We cant service/ack irqs that are assigned to port 2 */
+ if (!(pdata->config & PCAP_SECOND_PORT)) {
+ ezx_pcap_read(pcap, PCAP_REG_INT_SEL, &int_sel);
+ isr &= ~int_sel;
+ }
- local_irq_disable();
- service = isr & ~msr;
+ ezx_pcap_write(pcap, PCAP_REG_MSR, isr | msr);
+ ezx_pcap_write(pcap, PCAP_REG_ISR, isr);
- for (irq = pcap->irq_base; service; service >>= 1, irq++) {
- if (service & 1) {
- struct irq_desc *desc = irq_to_desc(irq);
+ local_irq_disable();
+ service = isr & ~msr;
+ for (irq = pcap->irq_base; service; service >>= 1, irq++) {
+ if (service & 1) {
+ struct irq_desc *desc = irq_to_desc(irq);
- if (WARN(!desc, KERN_WARNING
- "Invalid PCAP IRQ %d\n", irq))
- break;
+ if (WARN(!desc, KERN_WARNING
+ "Invalid PCAP IRQ %d\n", irq))
+ break;
- if (desc->status & IRQ_DISABLED)
- note_interrupt(irq, desc, IRQ_NONE);
- else
- desc->handle_irq(irq, desc);
+ if (desc->status & IRQ_DISABLED)
+ note_interrupt(irq, desc, IRQ_NONE);
+ else
+ desc->handle_irq(irq, desc);
+ }
}
- }
- local_irq_enable();
+ local_irq_enable();
+ ezx_pcap_write(pcap, PCAP_REG_MSR, pcap->msr);
+ } while (gpio_get_value(irq_to_gpio(pcap->spi->irq)));
}
static void pcap_irq_handler(unsigned int irq, struct irq_desc *desc)
@@ -194,6 +223,19 @@ static void pcap_irq_handler(unsigned int irq, struct irq_desc *desc)
}
/* ADC */
+void pcap_set_ts_bits(struct pcap_chip *pcap, u32 bits)
+{
+ u32 tmp;
+
+ mutex_lock(&pcap->adc_mutex);
+ ezx_pcap_read(pcap, PCAP_REG_ADC, &tmp);
+ tmp &= ~(PCAP_ADC_TS_M_MASK | PCAP_ADC_TS_REF_LOWPWR);
+ tmp |= bits & (PCAP_ADC_TS_M_MASK | PCAP_ADC_TS_REF_LOWPWR);
+ ezx_pcap_write(pcap, PCAP_REG_ADC, tmp);
+ mutex_unlock(&pcap->adc_mutex);
+}
+EXPORT_SYMBOL_GPL(pcap_set_ts_bits);
+
static void pcap_disable_adc(struct pcap_chip *pcap)
{
u32 tmp;
@@ -216,15 +258,16 @@ static void pcap_adc_trigger(struct pcap_chip *pcap)
mutex_unlock(&pcap->adc_mutex);
return;
}
- mutex_unlock(&pcap->adc_mutex);
-
- /* start conversion on requested bank */
- tmp = pcap->adc_queue[head]->flags | PCAP_ADC_ADEN;
+ /* start conversion on requested bank, save TS_M bits */
+ ezx_pcap_read(pcap, PCAP_REG_ADC, &tmp);
+ tmp &= (PCAP_ADC_TS_M_MASK | PCAP_ADC_TS_REF_LOWPWR);
+ tmp |= pcap->adc_queue[head]->flags | PCAP_ADC_ADEN;
if (pcap->adc_queue[head]->bank == PCAP_ADC_BANK_1)
tmp |= PCAP_ADC_AD_SEL1;
ezx_pcap_write(pcap, PCAP_REG_ADC, tmp);
+ mutex_unlock(&pcap->adc_mutex);
ezx_pcap_write(pcap, PCAP_REG_ADR, PCAP_ADR_ASC);
}
@@ -499,7 +542,7 @@ static void __exit ezx_pcap_exit(void)
spi_unregister_driver(&ezxpcap_driver);
}
-module_init(ezx_pcap_init);
+subsys_initcall(ezx_pcap_init);
module_exit(ezx_pcap_exit);
MODULE_LICENSE("GPL");
diff --git a/drivers/mfd/mc13783-core.c b/drivers/mfd/mc13783-core.c
new file mode 100644
index 00000000000..e354d2912ef
--- /dev/null
+++ b/drivers/mfd/mc13783-core.c
@@ -0,0 +1,427 @@
+/*
+ * Copyright 2009 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
+ *
+ * This code is in parts based on wm8350-core.c and pcf50633-core.c
+ *
+ * Initial development of this code was funded by
+ * Phytec Messtechnik GmbH, http://www.phytec.de
+ *
+ * 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/mfd/mc13783-private.h>
+#include <linux/platform_device.h>
+#include <linux/mfd/mc13783.h>
+#include <linux/completion.h>
+#include <linux/interrupt.h>
+#include <linux/mfd/core.h>
+#include <linux/spi/spi.h>
+#include <linux/uaccess.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/irq.h>
+
+#define MC13783_MAX_REG_NUM 0x3f
+#define MC13783_FRAME_MASK 0x00ffffff
+#define MC13783_MAX_REG_NUM 0x3f
+#define MC13783_REG_NUM_SHIFT 0x19
+#define MC13783_WRITE_BIT_SHIFT 31
+
+static inline int spi_rw(struct spi_device *spi, u8 * buf, size_t len)
+{
+ struct spi_transfer t = {
+ .tx_buf = (const void *)buf,
+ .rx_buf = buf,
+ .len = len,
+ .cs_change = 0,
+ .delay_usecs = 0,
+ };
+ struct spi_message m;
+
+ spi_message_init(&m);
+ spi_message_add_tail(&t, &m);
+ if (spi_sync(spi, &m) != 0 || m.status != 0)
+ return -EINVAL;
+ return len - m.actual_length;
+}
+
+static int mc13783_read(struct mc13783 *mc13783, int reg_num, u32 *reg_val)
+{
+ unsigned int frame = 0;
+ int ret = 0;
+
+ if (reg_num > MC13783_MAX_REG_NUM)
+ return -EINVAL;
+
+ frame |= reg_num << MC13783_REG_NUM_SHIFT;
+
+ ret = spi_rw(mc13783->spi_device, (u8 *)&frame, 4);
+
+ *reg_val = frame & MC13783_FRAME_MASK;
+
+ return ret;
+}
+
+static int mc13783_write(struct mc13783 *mc13783, int reg_num, u32 reg_val)
+{
+ unsigned int frame = 0;
+
+ if (reg_num > MC13783_MAX_REG_NUM)
+ return -EINVAL;
+
+ frame |= (1 << MC13783_WRITE_BIT_SHIFT);
+ frame |= reg_num << MC13783_REG_NUM_SHIFT;
+ frame |= reg_val & MC13783_FRAME_MASK;
+
+ return spi_rw(mc13783->spi_device, (u8 *)&frame, 4);
+}
+
+int mc13783_reg_read(struct mc13783 *mc13783, int reg_num, u32 *reg_val)
+{
+ int ret;
+
+ mutex_lock(&mc13783->io_lock);
+ ret = mc13783_read(mc13783, reg_num, reg_val);
+ mutex_unlock(&mc13783->io_lock);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(mc13783_reg_read);
+
+int mc13783_reg_write(struct mc13783 *mc13783, int reg_num, u32 reg_val)
+{
+ int ret;
+
+ mutex_lock(&mc13783->io_lock);
+ ret = mc13783_write(mc13783, reg_num, reg_val);
+ mutex_unlock(&mc13783->io_lock);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(mc13783_reg_write);
+
+/**
+ * mc13783_set_bits - Bitmask write
+ *
+ * @mc13783: Pointer to mc13783 control structure
+ * @reg: Register to access
+ * @mask: Mask of bits to change
+ * @val: Value to set for masked bits
+ */
+int mc13783_set_bits(struct mc13783 *mc13783, int reg, u32 mask, u32 val)
+{
+ u32 tmp;
+ int ret;
+
+ mutex_lock(&mc13783->io_lock);
+
+ ret = mc13783_read(mc13783, reg, &tmp);
+ tmp = (tmp & ~mask) | val;
+ if (ret == 0)
+ ret = mc13783_write(mc13783, reg, tmp);
+
+ mutex_unlock(&mc13783->io_lock);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(mc13783_set_bits);
+
+int mc13783_register_irq(struct mc13783 *mc13783, int irq,
+ void (*handler) (int, void *), void *data)
+{
+ if (irq < 0 || irq > MC13783_NUM_IRQ || !handler)
+ return -EINVAL;
+
+ if (WARN_ON(mc13783->irq_handler[irq].handler))
+ return -EBUSY;
+
+ mutex_lock(&mc13783->io_lock);
+ mc13783->irq_handler[irq].handler = handler;
+ mc13783->irq_handler[irq].data = data;
+ mutex_unlock(&mc13783->io_lock);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(mc13783_register_irq);
+
+int mc13783_free_irq(struct mc13783 *mc13783, int irq)
+{
+ if (irq < 0 || irq > MC13783_NUM_IRQ)
+ return -EINVAL;
+
+ mutex_lock(&mc13783->io_lock);
+ mc13783->irq_handler[irq].handler = NULL;
+ mutex_unlock(&mc13783->io_lock);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(mc13783_free_irq);
+
+static void mc13783_irq_work(struct work_struct *work)
+{
+ struct mc13783 *mc13783 = container_of(work, struct mc13783, work);
+ int i;
+ unsigned int adc_sts;
+
+ /* check if the adc has finished any completion */
+ mc13783_reg_read(mc13783, MC13783_REG_INTERRUPT_STATUS_0, &adc_sts);
+ mc13783_reg_write(mc13783, MC13783_REG_INTERRUPT_STATUS_0,
+ adc_sts & MC13783_INT_STAT_ADCDONEI);
+
+ if (adc_sts & MC13783_INT_STAT_ADCDONEI)
+ complete_all(&mc13783->adc_done);
+
+ for (i = 0; i < MC13783_NUM_IRQ; i++)
+ if (mc13783->irq_handler[i].handler)
+ mc13783->irq_handler[i].handler(i,
+ mc13783->irq_handler[i].data);
+ enable_irq(mc13783->irq);
+}
+
+static irqreturn_t mc13783_interrupt(int irq, void *dev_id)
+{
+ struct mc13783 *mc13783 = dev_id;
+
+ disable_irq_nosync(irq);
+
+ schedule_work(&mc13783->work);
+ return IRQ_HANDLED;
+}
+
+/* set adc to ts interrupt mode, which generates touchscreen wakeup interrupt */
+static inline void mc13783_adc_set_ts_irq_mode(struct mc13783 *mc13783)
+{
+ unsigned int reg_adc0, reg_adc1;
+
+ reg_adc0 = MC13783_ADC0_ADREFEN | MC13783_ADC0_ADREFMODE
+ | MC13783_ADC0_TSMOD0;
+ reg_adc1 = MC13783_ADC1_ADEN | MC13783_ADC1_ADTRIGIGN;
+
+ mc13783_reg_write(mc13783, MC13783_REG_ADC_0, reg_adc0);
+ mc13783_reg_write(mc13783, MC13783_REG_ADC_1, reg_adc1);
+}
+
+int mc13783_adc_do_conversion(struct mc13783 *mc13783, unsigned int mode,
+ unsigned int channel, unsigned int *sample)
+{
+ unsigned int reg_adc0, reg_adc1;
+ int i;
+
+ mutex_lock(&mc13783->adc_conv_lock);
+
+ /* set up auto incrementing anyway to make quick read */
+ reg_adc0 = MC13783_ADC0_ADINC1 | MC13783_ADC0_ADINC2;
+ /* enable the adc, ignore external triggering and set ASC to trigger
+ * conversion */
+ reg_adc1 = MC13783_ADC1_ADEN | MC13783_ADC1_ADTRIGIGN
+ | MC13783_ADC1_ASC;
+
+ /* setup channel number */
+ if (channel > 7)
+ reg_adc1 |= MC13783_ADC1_ADSEL;
+
+ switch (mode) {
+ case MC13783_ADC_MODE_TS:
+ /* enables touch screen reference mode and set touchscreen mode
+ * to position mode */
+ reg_adc0 |= MC13783_ADC0_ADREFEN | MC13783_ADC0_ADREFMODE
+ | MC13783_ADC0_TSMOD0 | MC13783_ADC0_TSMOD1;
+ reg_adc1 |= 4 << MC13783_ADC1_CHAN1_SHIFT;
+ break;
+ case MC13783_ADC_MODE_SINGLE_CHAN:
+ reg_adc1 |= (channel & 0x7) << MC13783_ADC1_CHAN0_SHIFT;
+ reg_adc1 |= MC13783_ADC1_RAND;
+ break;
+ case MC13783_ADC_MODE_MULT_CHAN:
+ reg_adc1 |= 4 << MC13783_ADC1_CHAN1_SHIFT;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ mc13783_reg_write(mc13783, MC13783_REG_ADC_0, reg_adc0);
+ mc13783_reg_write(mc13783, MC13783_REG_ADC_1, reg_adc1);
+
+ wait_for_completion_interruptible(&mc13783->adc_done);
+
+ for (i = 0; i < 4; i++)
+ mc13783_reg_read(mc13783, MC13783_REG_ADC_2, &sample[i]);
+
+ if (mc13783->ts_active)
+ mc13783_adc_set_ts_irq_mode(mc13783);
+
+ mutex_unlock(&mc13783->adc_conv_lock);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(mc13783_adc_do_conversion);
+
+void mc13783_adc_set_ts_status(struct mc13783 *mc13783, unsigned int status)
+{
+ mc13783->ts_active = status;
+}
+EXPORT_SYMBOL_GPL(mc13783_adc_set_ts_status);
+
+static int mc13783_check_revision(struct mc13783 *mc13783)
+{
+ u32 rev_id, rev1, rev2, finid, icid;
+
+ mc13783_read(mc13783, MC13783_REG_REVISION, &rev_id);
+
+ rev1 = (rev_id & 0x018) >> 3;
+ rev2 = (rev_id & 0x007);
+ icid = (rev_id & 0x01C0) >> 6;
+ finid = (rev_id & 0x01E00) >> 9;
+
+ /* Ver 0.2 is actually 3.2a. Report as 3.2 */
+ if ((rev1 == 0) && (rev2 == 2))
+ rev1 = 3;
+
+ if (rev1 == 0 || icid != 2) {
+ dev_err(mc13783->dev, "No MC13783 detected.\n");
+ return -ENODEV;
+ }
+
+ mc13783->revision = ((rev1 * 10) + rev2);
+ dev_info(mc13783->dev, "MC13783 Rev %d.%d FinVer %x detected\n", rev1,
+ rev2, finid);
+
+ return 0;
+}
+
+/*
+ * Register a client device. This is non-fatal since there is no need to
+ * fail the entire device init due to a single platform device failing.
+ */
+static void mc13783_client_dev_register(struct mc13783 *mc13783,
+ const char *name)
+{
+ struct mfd_cell cell = {};
+
+ cell.name = name;
+
+ mfd_add_devices(mc13783->dev, -1, &cell, 1, NULL, 0);
+}
+
+static int __devinit mc13783_probe(struct spi_device *spi)
+{
+ struct mc13783 *mc13783;
+ struct mc13783_platform_data *pdata = spi->dev.platform_data;
+ int ret;
+
+ mc13783 = kzalloc(sizeof(struct mc13783), GFP_KERNEL);
+ if (!mc13783)
+ return -ENOMEM;
+
+ dev_set_drvdata(&spi->dev, mc13783);
+ spi->mode = SPI_MODE_0 | SPI_CS_HIGH;
+ spi->bits_per_word = 32;
+ spi_setup(spi);
+
+ mc13783->spi_device = spi;
+ mc13783->dev = &spi->dev;
+ mc13783->irq = spi->irq;
+
+ INIT_WORK(&mc13783->work, mc13783_irq_work);
+ mutex_init(&mc13783->io_lock);
+ mutex_init(&mc13783->adc_conv_lock);
+ init_completion(&mc13783->adc_done);
+
+ if (pdata) {
+ mc13783->flags = pdata->flags;
+ mc13783->regulators = pdata->regulators;
+ mc13783->num_regulators = pdata->num_regulators;
+ }
+
+ if (mc13783_check_revision(mc13783)) {
+ ret = -ENODEV;
+ goto err_out;
+ }
+
+ /* clear and mask all interrupts */
+ mc13783_reg_write(mc13783, MC13783_REG_INTERRUPT_STATUS_0, 0x00ffffff);
+ mc13783_reg_write(mc13783, MC13783_REG_INTERRUPT_MASK_0, 0x00ffffff);
+ mc13783_reg_write(mc13783, MC13783_REG_INTERRUPT_STATUS_1, 0x00ffffff);
+ mc13783_reg_write(mc13783, MC13783_REG_INTERRUPT_MASK_1, 0x00ffffff);
+
+ /* unmask adcdone interrupts */
+ mc13783_set_bits(mc13783, MC13783_REG_INTERRUPT_MASK_0,
+ MC13783_INT_MASK_ADCDONEM, 0);
+
+ ret = request_irq(mc13783->irq, mc13783_interrupt,
+ IRQF_DISABLED | IRQF_TRIGGER_HIGH, "mc13783",
+ mc13783);
+ if (ret)
+ goto err_out;
+
+ if (mc13783->flags & MC13783_USE_CODEC)
+ mc13783_client_dev_register(mc13783, "mc13783-codec");
+ if (mc13783->flags & MC13783_USE_ADC)
+ mc13783_client_dev_register(mc13783, "mc13783-adc");
+ if (mc13783->flags & MC13783_USE_RTC)
+ mc13783_client_dev_register(mc13783, "mc13783-rtc");
+ if (mc13783->flags & MC13783_USE_REGULATOR)
+ mc13783_client_dev_register(mc13783, "mc13783-regulator");
+ if (mc13783->flags & MC13783_USE_TOUCHSCREEN)
+ mc13783_client_dev_register(mc13783, "mc13783-ts");
+
+ return 0;
+
+err_out:
+ kfree(mc13783);
+ return ret;
+}
+
+static int __devexit mc13783_remove(struct spi_device *spi)
+{
+ struct mc13783 *mc13783;
+
+ mc13783 = dev_get_drvdata(&spi->dev);
+
+ free_irq(mc13783->irq, mc13783);
+
+ mfd_remove_devices(&spi->dev);
+
+ return 0;
+}
+
+static struct spi_driver pmic_driver = {
+ .driver = {
+ .name = "mc13783",
+ .bus = &spi_bus_type,
+ .owner = THIS_MODULE,
+ },
+ .probe = mc13783_probe,
+ .remove = __devexit_p(mc13783_remove),
+};
+
+static int __init pmic_init(void)
+{
+ return spi_register_driver(&pmic_driver);
+}
+subsys_initcall(pmic_init);
+
+static void __exit pmic_exit(void)
+{
+ spi_unregister_driver(&pmic_driver);
+}
+module_exit(pmic_exit);
+
+MODULE_DESCRIPTION("Core/Protocol driver for Freescale MC13783 PMIC");
+MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
+MODULE_LICENSE("GPL");
+
diff --git a/drivers/mfd/mfd-core.c b/drivers/mfd/mfd-core.c
index 54ddf3772e0..ae15e495e20 100644
--- a/drivers/mfd/mfd-core.c
+++ b/drivers/mfd/mfd-core.c
@@ -25,7 +25,7 @@ static int mfd_add_device(struct device *parent, int id,
int ret = -ENOMEM;
int r;
- pdev = platform_device_alloc(cell->name, id);
+ pdev = platform_device_alloc(cell->name, id + cell->id);
if (!pdev)
goto fail_alloc;
diff --git a/drivers/mfd/pcf50633-adc.c b/drivers/mfd/pcf50633-adc.c
index c2d05becfa9..3d31e97d6a4 100644
--- a/drivers/mfd/pcf50633-adc.c
+++ b/drivers/mfd/pcf50633-adc.c
@@ -73,15 +73,10 @@ static void trigger_next_adc_job_if_any(struct pcf50633 *pcf)
struct pcf50633_adc *adc = __to_adc(pcf);
int head;
- mutex_lock(&adc->queue_mutex);
-
head = adc->queue_head;
- if (!adc->queue[head]) {
- mutex_unlock(&adc->queue_mutex);
+ if (!adc->queue[head])
return;
- }
- mutex_unlock(&adc->queue_mutex);
adc_setup(pcf, adc->queue[head]->mux, adc->queue[head]->avg);
}
@@ -99,16 +94,17 @@ adc_enqueue_request(struct pcf50633 *pcf, struct pcf50633_adc_request *req)
if (adc->queue[tail]) {
mutex_unlock(&adc->queue_mutex);
+ dev_err(pcf->dev, "ADC queue is full, dropping request\n");
return -EBUSY;
}
adc->queue[tail] = req;
+ if (head == tail)
+ trigger_next_adc_job_if_any(pcf);
adc->queue_tail = (tail + 1) & (PCF50633_MAX_ADC_FIFO_DEPTH - 1);
mutex_unlock(&adc->queue_mutex);
- trigger_next_adc_job_if_any(pcf);
-
return 0;
}
@@ -124,6 +120,7 @@ pcf50633_adc_sync_read_callback(struct pcf50633 *pcf, void *param, int result)
int pcf50633_adc_sync_read(struct pcf50633 *pcf, int mux, int avg)
{
struct pcf50633_adc_request *req;
+ int err;
/* req is freed when the result is ready, in interrupt handler */
req = kzalloc(sizeof(*req), GFP_KERNEL);
@@ -136,9 +133,13 @@ int pcf50633_adc_sync_read(struct pcf50633 *pcf, int mux, int avg)
req->callback_param = req;
init_completion(&req->completion);
- adc_enqueue_request(pcf, req);
+ err = adc_enqueue_request(pcf, req);
+ if (err)
+ return err;
+
wait_for_completion(&req->completion);
+ /* FIXME by this time req might be already freed */
return req->result;
}
EXPORT_SYMBOL_GPL(pcf50633_adc_sync_read);
@@ -159,9 +160,7 @@ int pcf50633_adc_async_read(struct pcf50633 *pcf, int mux, int avg,
req->callback = callback;
req->callback_param = callback_param;
- adc_enqueue_request(pcf, req);
-
- return 0;
+ return adc_enqueue_request(pcf, req);
}
EXPORT_SYMBOL_GPL(pcf50633_adc_async_read);
@@ -184,7 +183,7 @@ static void pcf50633_adc_irq(int irq, void *data)
struct pcf50633_adc *adc = data;
struct pcf50633 *pcf = adc->pcf;
struct pcf50633_adc_request *req;
- int head;
+ int head, res;
mutex_lock(&adc->queue_mutex);
head = adc->queue_head;
@@ -199,12 +198,13 @@ static void pcf50633_adc_irq(int irq, void *data)
adc->queue_head = (head + 1) &
(PCF50633_MAX_ADC_FIFO_DEPTH - 1);
+ res = adc_result(pcf);
+ trigger_next_adc_job_if_any(pcf);
+
mutex_unlock(&adc->queue_mutex);
- req->callback(pcf, req->callback_param, adc_result(pcf));
+ req->callback(pcf, req->callback_param, res);
kfree(req);
-
- trigger_next_adc_job_if_any(pcf);
}
static int __devinit pcf50633_adc_probe(struct platform_device *pdev)
diff --git a/drivers/mfd/pcf50633-core.c b/drivers/mfd/pcf50633-core.c
index 8d3c38bf971..d26d7747175 100644
--- a/drivers/mfd/pcf50633-core.c
+++ b/drivers/mfd/pcf50633-core.c
@@ -444,7 +444,7 @@ static irqreturn_t pcf50633_irq(int irq, void *data)
get_device(pcf->dev);
disable_irq_nosync(pcf->irq);
- schedule_work(&pcf->irq_work);
+ queue_work(pcf->work_queue, &pcf->irq_work);
return IRQ_HANDLED;
}
@@ -575,6 +575,7 @@ static int __devinit pcf50633_probe(struct i2c_client *client,
pcf->dev = &client->dev;
pcf->i2c_client = client;
pcf->irq = client->irq;
+ pcf->work_queue = create_singlethread_workqueue("pcf50633");
INIT_WORK(&pcf->irq_work, pcf50633_irq_worker);
@@ -651,6 +652,7 @@ static int __devinit pcf50633_probe(struct i2c_client *client,
return 0;
err:
+ destroy_workqueue(pcf->work_queue);
kfree(pcf);
return ret;
}
@@ -661,6 +663,7 @@ static int __devexit pcf50633_remove(struct i2c_client *client)
int i;
free_irq(pcf->irq, pcf);
+ destroy_workqueue(pcf->work_queue);
platform_device_unregister(pcf->input_pdev);
platform_device_unregister(pcf->rtc_pdev);
diff --git a/drivers/mfd/twl4030-core.c b/drivers/mfd/twl4030-core.c
index ca54996ffd0..e424cf6d8e9 100644
--- a/drivers/mfd/twl4030-core.c
+++ b/drivers/mfd/twl4030-core.c
@@ -89,6 +89,12 @@
#define twl_has_madc() false
#endif
+#ifdef CONFIG_TWL4030_POWER
+#define twl_has_power() true
+#else
+#define twl_has_power() false
+#endif
+
#if defined(CONFIG_RTC_DRV_TWL4030) || defined(CONFIG_RTC_DRV_TWL4030_MODULE)
#define twl_has_rtc() true
#else
@@ -115,6 +121,12 @@
#define TWL4030_NUM_SLAVES 4
+#if defined(CONFIG_INPUT_TWL4030_PWRBUTTON) \
+ || defined(CONFIG_INPUT_TWL4030_PWBUTTON_MODULE)
+#define twl_has_pwrbutton() true
+#else
+#define twl_has_pwrbutton() false
+#endif
/* Base Address defns for twl4030_map[] */
@@ -538,6 +550,13 @@ add_children(struct twl4030_platform_data *pdata, unsigned long features)
return PTR_ERR(child);
}
+ if (twl_has_pwrbutton()) {
+ child = add_child(1, "twl4030_pwrbutton",
+ NULL, 0, true, pdata->irq_base + 8 + 0, 0);
+ if (IS_ERR(child))
+ return PTR_ERR(child);
+ }
+
if (twl_has_regulator()) {
/*
child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1);
@@ -788,6 +807,10 @@ twl4030_probe(struct i2c_client *client, const struct i2c_device_id *id)
/* setup clock framework */
clocks_init(&client->dev);
+ /* load power event scripts */
+ if (twl_has_power() && pdata->power)
+ twl4030_power_init(pdata->power);
+
/* Maybe init the T2 Interrupt subsystem */
if (client->irq
&& pdata->irq_base
diff --git a/drivers/mfd/twl4030-irq.c b/drivers/mfd/twl4030-irq.c
index 7d430835655..fb194fe244c 100644
--- a/drivers/mfd/twl4030-irq.c
+++ b/drivers/mfd/twl4030-irq.c
@@ -424,7 +424,7 @@ static void twl4030_sih_do_edge(struct work_struct *work)
/* see what work we have */
spin_lock_irq(&sih_agent_lock);
edge_change = agent->edge_change;
- agent->edge_change = 0;;
+ agent->edge_change = 0;
sih = edge_change ? agent->sih : NULL;
spin_unlock_irq(&sih_agent_lock);
if (!sih)
diff --git a/drivers/mfd/twl4030-power.c b/drivers/mfd/twl4030-power.c
new file mode 100644
index 00000000000..d423e0c4176
--- /dev/null
+++ b/drivers/mfd/twl4030-power.c
@@ -0,0 +1,472 @@
+/*
+ * linux/drivers/i2c/chips/twl4030-power.c
+ *
+ * Handle TWL4030 Power initialization
+ *
+ * Copyright (C) 2008 Nokia Corporation
+ * Copyright (C) 2006 Texas Instruments, Inc
+ *
+ * Written by Kalle Jokiniemi
+ * Peter De Schrijver <peter.de-schrijver@nokia.com>
+ * Several fixes by Amit Kucheria <amit.kucheria@verdurent.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file "COPYING" in the main directory of this
+ * archive for more details.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/module.h>
+#include <linux/pm.h>
+#include <linux/i2c/twl4030.h>
+#include <linux/platform_device.h>
+
+#include <asm/mach-types.h>
+
+static u8 twl4030_start_script_address = 0x2b;
+
+#define PWR_P1_SW_EVENTS 0x10
+#define PWR_DEVOFF (1<<0)
+
+#define PHY_TO_OFF_PM_MASTER(p) (p - 0x36)
+#define PHY_TO_OFF_PM_RECEIVER(p) (p - 0x5b)
+
+/* resource - hfclk */
+#define R_HFCLKOUT_DEV_GRP PHY_TO_OFF_PM_RECEIVER(0xe6)
+
+/* PM events */
+#define R_P1_SW_EVENTS PHY_TO_OFF_PM_MASTER(0x46)
+#define R_P2_SW_EVENTS PHY_TO_OFF_PM_MASTER(0x47)
+#define R_P3_SW_EVENTS PHY_TO_OFF_PM_MASTER(0x48)
+#define R_CFG_P1_TRANSITION PHY_TO_OFF_PM_MASTER(0x36)
+#define R_CFG_P2_TRANSITION PHY_TO_OFF_PM_MASTER(0x37)
+#define R_CFG_P3_TRANSITION PHY_TO_OFF_PM_MASTER(0x38)
+
+#define LVL_WAKEUP 0x08
+
+#define ENABLE_WARMRESET (1<<4)
+
+#define END_OF_SCRIPT 0x3f
+
+#define R_SEQ_ADD_A2S PHY_TO_OFF_PM_MASTER(0x55)
+#define R_SEQ_ADD_S2A12 PHY_TO_OFF_PM_MASTER(0x56)
+#define R_SEQ_ADD_S2A3 PHY_TO_OFF_PM_MASTER(0x57)
+#define R_SEQ_ADD_WARM PHY_TO_OFF_PM_MASTER(0x58)
+#define R_MEMORY_ADDRESS PHY_TO_OFF_PM_MASTER(0x59)
+#define R_MEMORY_DATA PHY_TO_OFF_PM_MASTER(0x5a)
+
+#define R_PROTECT_KEY 0x0E
+#define R_KEY_1 0xC0
+#define R_KEY_2 0x0C
+
+/* resource configuration registers */
+
+#define DEVGROUP_OFFSET 0
+#define TYPE_OFFSET 1
+
+/* Bit positions */
+#define DEVGROUP_SHIFT 5
+#define DEVGROUP_MASK (7 << DEVGROUP_SHIFT)
+#define TYPE_SHIFT 0
+#define TYPE_MASK (7 << TYPE_SHIFT)
+#define TYPE2_SHIFT 3
+#define TYPE2_MASK (3 << TYPE2_SHIFT)
+
+static u8 res_config_addrs[] = {
+ [RES_VAUX1] = 0x17,
+ [RES_VAUX2] = 0x1b,
+ [RES_VAUX3] = 0x1f,
+ [RES_VAUX4] = 0x23,
+ [RES_VMMC1] = 0x27,
+ [RES_VMMC2] = 0x2b,
+ [RES_VPLL1] = 0x2f,
+ [RES_VPLL2] = 0x33,
+ [RES_VSIM] = 0x37,
+ [RES_VDAC] = 0x3b,
+ [RES_VINTANA1] = 0x3f,
+ [RES_VINTANA2] = 0x43,
+ [RES_VINTDIG] = 0x47,
+ [RES_VIO] = 0x4b,
+ [RES_VDD1] = 0x55,
+ [RES_VDD2] = 0x63,
+ [RES_VUSB_1V5] = 0x71,
+ [RES_VUSB_1V8] = 0x74,
+ [RES_VUSB_3V1] = 0x77,
+ [RES_VUSBCP] = 0x7a,
+ [RES_REGEN] = 0x7f,
+ [RES_NRES_PWRON] = 0x82,
+ [RES_CLKEN] = 0x85,
+ [RES_SYSEN] = 0x88,
+ [RES_HFCLKOUT] = 0x8b,
+ [RES_32KCLKOUT] = 0x8e,
+ [RES_RESET] = 0x91,
+ [RES_Main_Ref] = 0x94,
+};
+
+static int __init twl4030_write_script_byte(u8 address, u8 byte)
+{
+ int err;
+
+ err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, address,
+ R_MEMORY_ADDRESS);
+ if (err)
+ goto out;
+ err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, byte,
+ R_MEMORY_DATA);
+out:
+ return err;
+}
+
+static int __init twl4030_write_script_ins(u8 address, u16 pmb_message,
+ u8 delay, u8 next)
+{
+ int err;
+
+ address *= 4;
+ err = twl4030_write_script_byte(address++, pmb_message >> 8);
+ if (err)
+ goto out;
+ err = twl4030_write_script_byte(address++, pmb_message & 0xff);
+ if (err)
+ goto out;
+ err = twl4030_write_script_byte(address++, delay);
+ if (err)
+ goto out;
+ err = twl4030_write_script_byte(address++, next);
+out:
+ return err;
+}
+
+static int __init twl4030_write_script(u8 address, struct twl4030_ins *script,
+ int len)
+{
+ int err;
+
+ for (; len; len--, address++, script++) {
+ if (len == 1) {
+ err = twl4030_write_script_ins(address,
+ script->pmb_message,
+ script->delay,
+ END_OF_SCRIPT);
+ if (err)
+ break;
+ } else {
+ err = twl4030_write_script_ins(address,
+ script->pmb_message,
+ script->delay,
+ address + 1);
+ if (err)
+ break;
+ }
+ }
+ return err;
+}
+
+static int __init twl4030_config_wakeup3_sequence(u8 address)
+{
+ int err;
+ u8 data;
+
+ /* Set SLEEP to ACTIVE SEQ address for P3 */
+ err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, address,
+ R_SEQ_ADD_S2A3);
+ if (err)
+ goto out;
+
+ /* P3 LVL_WAKEUP should be on LEVEL */
+ err = twl4030_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &data,
+ R_P3_SW_EVENTS);
+ if (err)
+ goto out;
+ data |= LVL_WAKEUP;
+ err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, data,
+ R_P3_SW_EVENTS);
+out:
+ if (err)
+ pr_err("TWL4030 wakeup sequence for P3 config error\n");
+ return err;
+}
+
+static int __init twl4030_config_wakeup12_sequence(u8 address)
+{
+ int err = 0;
+ u8 data;
+
+ /* Set SLEEP to ACTIVE SEQ address for P1 and P2 */
+ err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, address,
+ R_SEQ_ADD_S2A12);
+ if (err)
+ goto out;
+
+ /* P1/P2 LVL_WAKEUP should be on LEVEL */
+ err = twl4030_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &data,
+ R_P1_SW_EVENTS);
+ if (err)
+ goto out;
+
+ data |= LVL_WAKEUP;
+ err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, data,
+ R_P1_SW_EVENTS);
+ if (err)
+ goto out;
+
+ err = twl4030_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &data,
+ R_P2_SW_EVENTS);
+ if (err)
+ goto out;
+
+ data |= LVL_WAKEUP;
+ err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, data,
+ R_P2_SW_EVENTS);
+ if (err)
+ goto out;
+
+ if (machine_is_omap_3430sdp() || machine_is_omap_ldp()) {
+ /* Disabling AC charger effect on sleep-active transitions */
+ err = twl4030_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &data,
+ R_CFG_P1_TRANSITION);
+ if (err)
+ goto out;
+ data &= ~(1<<1);
+ err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, data ,
+ R_CFG_P1_TRANSITION);
+ if (err)
+ goto out;
+ }
+
+out:
+ if (err)
+ pr_err("TWL4030 wakeup sequence for P1 and P2" \
+ "config error\n");
+ return err;
+}
+
+static int __init twl4030_config_sleep_sequence(u8 address)
+{
+ int err;
+
+ /* Set ACTIVE to SLEEP SEQ address in T2 memory*/
+ err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, address,
+ R_SEQ_ADD_A2S);
+
+ if (err)
+ pr_err("TWL4030 sleep sequence config error\n");
+
+ return err;
+}
+
+static int __init twl4030_config_warmreset_sequence(u8 address)
+{
+ int err;
+ u8 rd_data;
+
+ /* Set WARM RESET SEQ address for P1 */
+ err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, address,
+ R_SEQ_ADD_WARM);
+ if (err)
+ goto out;
+
+ /* P1/P2/P3 enable WARMRESET */
+ err = twl4030_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &rd_data,
+ R_P1_SW_EVENTS);
+ if (err)
+ goto out;
+
+ rd_data |= ENABLE_WARMRESET;
+ err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, rd_data,
+ R_P1_SW_EVENTS);
+ if (err)
+ goto out;
+
+ err = twl4030_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &rd_data,
+ R_P2_SW_EVENTS);
+ if (err)
+ goto out;
+
+ rd_data |= ENABLE_WARMRESET;
+ err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, rd_data,
+ R_P2_SW_EVENTS);
+ if (err)
+ goto out;
+
+ err = twl4030_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &rd_data,
+ R_P3_SW_EVENTS);
+ if (err)
+ goto out;
+
+ rd_data |= ENABLE_WARMRESET;
+ err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, rd_data,
+ R_P3_SW_EVENTS);
+out:
+ if (err)
+ pr_err("TWL4030 warmreset seq config error\n");
+ return err;
+}
+
+static int __init twl4030_configure_resource(struct twl4030_resconfig *rconfig)
+{
+ int rconfig_addr;
+ int err;
+ u8 type;
+ u8 grp;
+
+ if (rconfig->resource > TOTAL_RESOURCES) {
+ pr_err("TWL4030 Resource %d does not exist\n",
+ rconfig->resource);
+ return -EINVAL;
+ }
+
+ rconfig_addr = res_config_addrs[rconfig->resource];
+
+ /* Set resource group */
+ err = twl4030_i2c_read_u8(TWL4030_MODULE_PM_RECEIVER, &grp,
+ rconfig_addr + DEVGROUP_OFFSET);
+ if (err) {
+ pr_err("TWL4030 Resource %d group could not be read\n",
+ rconfig->resource);
+ return err;
+ }
+
+ if (rconfig->devgroup >= 0) {
+ grp &= ~DEVGROUP_MASK;
+ grp |= rconfig->devgroup << DEVGROUP_SHIFT;
+ err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
+ grp, rconfig_addr + DEVGROUP_OFFSET);
+ if (err < 0) {
+ pr_err("TWL4030 failed to program devgroup\n");
+ return err;
+ }
+ }
+
+ /* Set resource types */
+ err = twl4030_i2c_read_u8(TWL4030_MODULE_PM_RECEIVER, &type,
+ rconfig_addr + TYPE_OFFSET);
+ if (err < 0) {
+ pr_err("TWL4030 Resource %d type could not be read\n",
+ rconfig->resource);
+ return err;
+ }
+
+ if (rconfig->type >= 0) {
+ type &= ~TYPE_MASK;
+ type |= rconfig->type << TYPE_SHIFT;
+ }
+
+ if (rconfig->type2 >= 0) {
+ type &= ~TYPE2_MASK;
+ type |= rconfig->type2 << TYPE2_SHIFT;
+ }
+
+ err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
+ type, rconfig_addr + TYPE_OFFSET);
+ if (err < 0) {
+ pr_err("TWL4030 failed to program resource type\n");
+ return err;
+ }
+
+ return 0;
+}
+
+static int __init load_twl4030_script(struct twl4030_script *tscript,
+ u8 address)
+{
+ int err;
+ static int order;
+
+ /* Make sure the script isn't going beyond last valid address (0x3f) */
+ if ((address + tscript->size) > END_OF_SCRIPT) {
+ pr_err("TWL4030 scripts too big error\n");
+ return -EINVAL;
+ }
+
+ err = twl4030_write_script(address, tscript->script, tscript->size);
+ if (err)
+ goto out;
+
+ if (tscript->flags & TWL4030_WRST_SCRIPT) {
+ err = twl4030_config_warmreset_sequence(address);
+ if (err)
+ goto out;
+ }
+ if (tscript->flags & TWL4030_WAKEUP12_SCRIPT) {
+ err = twl4030_config_wakeup12_sequence(address);
+ if (err)
+ goto out;
+ order = 1;
+ }
+ if (tscript->flags & TWL4030_WAKEUP3_SCRIPT) {
+ err = twl4030_config_wakeup3_sequence(address);
+ if (err)
+ goto out;
+ }
+ if (tscript->flags & TWL4030_SLEEP_SCRIPT)
+ if (order)
+ pr_warning("TWL4030: Bad order of scripts (sleep "\
+ "script before wakeup) Leads to boot"\
+ "failure on some boards\n");
+ err = twl4030_config_sleep_sequence(address);
+out:
+ return err;
+}
+
+void __init twl4030_power_init(struct twl4030_power_data *twl4030_scripts)
+{
+ int err = 0;
+ int i;
+ struct twl4030_resconfig *resconfig;
+ u8 address = twl4030_start_script_address;
+
+ err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, R_KEY_1,
+ R_PROTECT_KEY);
+ if (err)
+ goto unlock;
+
+ err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, R_KEY_2,
+ R_PROTECT_KEY);
+ if (err)
+ goto unlock;
+
+ for (i = 0; i < twl4030_scripts->num; i++) {
+ err = load_twl4030_script(twl4030_scripts->scripts[i], address);
+ if (err)
+ goto load;
+ address += twl4030_scripts->scripts[i]->size;
+ }
+
+ resconfig = twl4030_scripts->resource_config;
+ if (resconfig) {
+ while (resconfig->resource) {
+ err = twl4030_configure_resource(resconfig);
+ if (err)
+ goto resource;
+ resconfig++;
+
+ }
+ }
+
+ err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0, R_PROTECT_KEY);
+ if (err)
+ pr_err("TWL4030 Unable to relock registers\n");
+ return;
+
+unlock:
+ if (err)
+ pr_err("TWL4030 Unable to unlock registers\n");
+ return;
+load:
+ if (err)
+ pr_err("TWL4030 failed to load scripts\n");
+ return;
+resource:
+ if (err)
+ pr_err("TWL4030 failed to configure resource\n");
+ return;
+}
diff --git a/drivers/mfd/wm831x-core.c b/drivers/mfd/wm831x-core.c
new file mode 100644
index 00000000000..49b7885c270
--- /dev/null
+++ b/drivers/mfd/wm831x-core.c
@@ -0,0 +1,1549 @@
+/*
+ * wm831x-core.c -- Device access for Wolfson WM831x PMICs
+ *
+ * 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/bcd.h>
+#include <linux/delay.h>
+#include <linux/mfd/core.h>
+
+#include <linux/mfd/wm831x/core.h>
+#include <linux/mfd/wm831x/pdata.h>
+#include <linux/mfd/wm831x/irq.h>
+#include <linux/mfd/wm831x/auxadc.h>
+#include <linux/mfd/wm831x/otp.h>
+#include <linux/mfd/wm831x/regulator.h>
+
+/* Current settings - values are 2*2^(reg_val/4) microamps. These are
+ * exported since they are used by multiple drivers.
+ */
+int wm831x_isinkv_values[WM831X_ISINK_MAX_ISEL] = {
+ 2,
+ 2,
+ 3,
+ 3,
+ 4,
+ 5,
+ 6,
+ 7,
+ 8,
+ 10,
+ 11,
+ 13,
+ 16,
+ 19,
+ 23,
+ 27,
+ 32,
+ 38,
+ 45,
+ 54,
+ 64,
+ 76,
+ 91,
+ 108,
+ 128,
+ 152,
+ 181,
+ 215,
+ 256,
+ 304,
+ 362,
+ 431,
+ 512,
+ 609,
+ 724,
+ 861,
+ 1024,
+ 1218,
+ 1448,
+ 1722,
+ 2048,
+ 2435,
+ 2896,
+ 3444,
+ 4096,
+ 4871,
+ 5793,
+ 6889,
+ 8192,
+ 9742,
+ 11585,
+ 13777,
+ 16384,
+ 19484,
+ 23170,
+ 27554,
+};
+EXPORT_SYMBOL_GPL(wm831x_isinkv_values);
+
+enum wm831x_parent {
+ WM8310 = 0,
+ WM8311 = 1,
+ WM8312 = 2,
+};
+
+static int wm831x_reg_locked(struct wm831x *wm831x, unsigned short reg)
+{
+ if (!wm831x->locked)
+ return 0;
+
+ switch (reg) {
+ case WM831X_WATCHDOG:
+ case WM831X_DC4_CONTROL:
+ case WM831X_ON_PIN_CONTROL:
+ case WM831X_BACKUP_CHARGER_CONTROL:
+ case WM831X_CHARGER_CONTROL_1:
+ case WM831X_CHARGER_CONTROL_2:
+ return 1;
+
+ default:
+ return 0;
+ }
+}
+
+/**
+ * wm831x_reg_unlock: Unlock user keyed registers
+ *
+ * The WM831x has a user key preventing writes to particularly
+ * critical registers. This function locks those registers,
+ * allowing writes to them.
+ */
+void wm831x_reg_lock(struct wm831x *wm831x)
+{
+ int ret;
+
+ ret = wm831x_reg_write(wm831x, WM831X_SECURITY_KEY, 0);
+ if (ret == 0) {
+ dev_vdbg(wm831x->dev, "Registers locked\n");
+
+ mutex_lock(&wm831x->io_lock);
+ WARN_ON(wm831x->locked);
+ wm831x->locked = 1;
+ mutex_unlock(&wm831x->io_lock);
+ } else {
+ dev_err(wm831x->dev, "Failed to lock registers: %d\n", ret);
+ }
+
+}
+EXPORT_SYMBOL_GPL(wm831x_reg_lock);
+
+/**
+ * wm831x_reg_unlock: Unlock user keyed registers
+ *
+ * The WM831x has a user key preventing writes to particularly
+ * critical registers. This function locks those registers,
+ * preventing spurious writes.
+ */
+int wm831x_reg_unlock(struct wm831x *wm831x)
+{
+ int ret;
+
+ /* 0x9716 is the value required to unlock the registers */
+ ret = wm831x_reg_write(wm831x, WM831X_SECURITY_KEY, 0x9716);
+ if (ret == 0) {
+ dev_vdbg(wm831x->dev, "Registers unlocked\n");
+
+ mutex_lock(&wm831x->io_lock);
+ WARN_ON(!wm831x->locked);
+ wm831x->locked = 0;
+ mutex_unlock(&wm831x->io_lock);
+ }
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(wm831x_reg_unlock);
+
+static int wm831x_read(struct wm831x *wm831x, unsigned short reg,
+ int bytes, void *dest)
+{
+ int ret, i;
+ u16 *buf = dest;
+
+ BUG_ON(bytes % 2);
+ BUG_ON(bytes <= 0);
+
+ ret = wm831x->read_dev(wm831x, reg, bytes, dest);
+ if (ret < 0)
+ return ret;
+
+ for (i = 0; i < bytes / 2; i++) {
+ buf[i] = be16_to_cpu(buf[i]);
+
+ dev_vdbg(wm831x->dev, "Read %04x from R%d(0x%x)\n",
+ buf[i], reg + i, reg + i);
+ }
+
+ return 0;
+}
+
+/**
+ * wm831x_reg_read: Read a single WM831x register.
+ *
+ * @wm831x: Device to read from.
+ * @reg: Register to read.
+ */
+int wm831x_reg_read(struct wm831x *wm831x, unsigned short reg)
+{
+ unsigned short val;
+ int ret;
+
+ mutex_lock(&wm831x->io_lock);
+
+ ret = wm831x_read(wm831x, reg, 2, &val);
+
+ mutex_unlock(&wm831x->io_lock);
+
+ if (ret < 0)
+ return ret;
+ else
+ return val;
+}
+EXPORT_SYMBOL_GPL(wm831x_reg_read);
+
+/**
+ * wm831x_bulk_read: Read multiple WM831x registers
+ *
+ * @wm831x: Device to read from
+ * @reg: First register
+ * @count: Number of registers
+ * @buf: Buffer to fill.
+ */
+int wm831x_bulk_read(struct wm831x *wm831x, unsigned short reg,
+ int count, u16 *buf)
+{
+ int ret;
+
+ mutex_lock(&wm831x->io_lock);
+
+ ret = wm831x_read(wm831x, reg, count * 2, buf);
+
+ mutex_unlock(&wm831x->io_lock);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(wm831x_bulk_read);
+
+static int wm831x_write(struct wm831x *wm831x, 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++) {
+ if (wm831x_reg_locked(wm831x, reg))
+ return -EPERM;
+
+ dev_vdbg(wm831x->dev, "Write %04x to R%d(0x%x)\n",
+ buf[i], reg + i, reg + i);
+
+ buf[i] = cpu_to_be16(buf[i]);
+ }
+
+ return wm831x->write_dev(wm831x, reg, bytes, src);
+}
+
+/**
+ * wm831x_reg_write: Write a single WM831x register.
+ *
+ * @wm831x: Device to write to.
+ * @reg: Register to write to.
+ * @val: Value to write.
+ */
+int wm831x_reg_write(struct wm831x *wm831x, unsigned short reg,
+ unsigned short val)
+{
+ int ret;
+
+ mutex_lock(&wm831x->io_lock);
+
+ ret = wm831x_write(wm831x, reg, 2, &val);
+
+ mutex_unlock(&wm831x->io_lock);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(wm831x_reg_write);
+
+/**
+ * wm831x_set_bits: Set the value of a bitfield in a WM831x register
+ *
+ * @wm831x: Device to write to.
+ * @reg: Register to write to.
+ * @mask: Mask of bits to set.
+ * @val: Value to set (unshifted)
+ */
+int wm831x_set_bits(struct wm831x *wm831x, unsigned short reg,
+ unsigned short mask, unsigned short val)
+{
+ int ret;
+ u16 r;
+
+ mutex_lock(&wm831x->io_lock);
+
+ ret = wm831x_read(wm831x, reg, 2, &r);
+ if (ret < 0)
+ goto out;
+
+ r &= ~mask;
+ r |= val;
+
+ ret = wm831x_write(wm831x, reg, 2, &r);
+
+out:
+ mutex_unlock(&wm831x->io_lock);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(wm831x_set_bits);
+
+/**
+ * wm831x_auxadc_read: Read a value from the WM831x AUXADC
+ *
+ * @wm831x: Device to read from.
+ * @input: AUXADC input to read.
+ */
+int wm831x_auxadc_read(struct wm831x *wm831x, enum wm831x_auxadc input)
+{
+ int tries = 10;
+ int ret, src;
+
+ mutex_lock(&wm831x->auxadc_lock);
+
+ ret = wm831x_set_bits(wm831x, WM831X_AUXADC_CONTROL,
+ WM831X_AUX_ENA, WM831X_AUX_ENA);
+ if (ret < 0) {
+ dev_err(wm831x->dev, "Failed to enable AUXADC: %d\n", ret);
+ goto out;
+ }
+
+ /* We force a single source at present */
+ src = input;
+ ret = wm831x_reg_write(wm831x, WM831X_AUXADC_SOURCE,
+ 1 << src);
+ if (ret < 0) {
+ dev_err(wm831x->dev, "Failed to set AUXADC source: %d\n", ret);
+ goto out;
+ }
+
+ ret = wm831x_set_bits(wm831x, WM831X_AUXADC_CONTROL,
+ WM831X_AUX_CVT_ENA, WM831X_AUX_CVT_ENA);
+ if (ret < 0) {
+ dev_err(wm831x->dev, "Failed to start AUXADC: %d\n", ret);
+ goto disable;
+ }
+
+ do {
+ msleep(1);
+
+ ret = wm831x_reg_read(wm831x, WM831X_AUXADC_CONTROL);
+ if (ret < 0)
+ ret = WM831X_AUX_CVT_ENA;
+ } while ((ret & WM831X_AUX_CVT_ENA) && --tries);
+
+ if (ret & WM831X_AUX_CVT_ENA) {
+ dev_err(wm831x->dev, "Timed out reading AUXADC\n");
+ ret = -EBUSY;
+ goto disable;
+ }
+
+ ret = wm831x_reg_read(wm831x, WM831X_AUXADC_DATA);
+ if (ret < 0) {
+ dev_err(wm831x->dev, "Failed to read AUXADC data: %d\n", ret);
+ } else {
+ src = ((ret & WM831X_AUX_DATA_SRC_MASK)
+ >> WM831X_AUX_DATA_SRC_SHIFT) - 1;
+
+ if (src == 14)
+ src = WM831X_AUX_CAL;
+
+ if (src != input) {
+ dev_err(wm831x->dev, "Data from source %d not %d\n",
+ src, input);
+ ret = -EINVAL;
+ } else {
+ ret &= WM831X_AUX_DATA_MASK;
+ }
+ }
+
+disable:
+ wm831x_set_bits(wm831x, WM831X_AUXADC_CONTROL, WM831X_AUX_ENA, 0);
+out:
+ mutex_unlock(&wm831x->auxadc_lock);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(wm831x_auxadc_read);
+
+/**
+ * wm831x_auxadc_read_uv: Read a voltage from the WM831x AUXADC
+ *
+ * @wm831x: Device to read from.
+ * @input: AUXADC input to read.
+ */
+int wm831x_auxadc_read_uv(struct wm831x *wm831x, enum wm831x_auxadc input)
+{
+ int ret;
+
+ ret = wm831x_auxadc_read(wm831x, input);
+ if (ret < 0)
+ return ret;
+
+ ret *= 1465;
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(wm831x_auxadc_read_uv);
+
+static struct resource wm831x_dcdc1_resources[] = {
+ {
+ .start = WM831X_DC1_CONTROL_1,
+ .end = WM831X_DC1_DVS_CONTROL,
+ .flags = IORESOURCE_IO,
+ },
+ {
+ .name = "UV",
+ .start = WM831X_IRQ_UV_DC1,
+ .end = WM831X_IRQ_UV_DC1,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "HC",
+ .start = WM831X_IRQ_HC_DC1,
+ .end = WM831X_IRQ_HC_DC1,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+
+static struct resource wm831x_dcdc2_resources[] = {
+ {
+ .start = WM831X_DC2_CONTROL_1,
+ .end = WM831X_DC2_DVS_CONTROL,
+ .flags = IORESOURCE_IO,
+ },
+ {
+ .name = "UV",
+ .start = WM831X_IRQ_UV_DC2,
+ .end = WM831X_IRQ_UV_DC2,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "HC",
+ .start = WM831X_IRQ_HC_DC2,
+ .end = WM831X_IRQ_HC_DC2,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource wm831x_dcdc3_resources[] = {
+ {
+ .start = WM831X_DC3_CONTROL_1,
+ .end = WM831X_DC3_SLEEP_CONTROL,
+ .flags = IORESOURCE_IO,
+ },
+ {
+ .name = "UV",
+ .start = WM831X_IRQ_UV_DC3,
+ .end = WM831X_IRQ_UV_DC3,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource wm831x_dcdc4_resources[] = {
+ {
+ .start = WM831X_DC4_CONTROL,
+ .end = WM831X_DC4_SLEEP_CONTROL,
+ .flags = IORESOURCE_IO,
+ },
+ {
+ .name = "UV",
+ .start = WM831X_IRQ_UV_DC4,
+ .end = WM831X_IRQ_UV_DC4,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource wm831x_gpio_resources[] = {
+ {
+ .start = WM831X_IRQ_GPIO_1,
+ .end = WM831X_IRQ_GPIO_16,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource wm831x_isink1_resources[] = {
+ {
+ .start = WM831X_CURRENT_SINK_1,
+ .end = WM831X_CURRENT_SINK_1,
+ .flags = IORESOURCE_IO,
+ },
+ {
+ .start = WM831X_IRQ_CS1,
+ .end = WM831X_IRQ_CS1,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource wm831x_isink2_resources[] = {
+ {
+ .start = WM831X_CURRENT_SINK_2,
+ .end = WM831X_CURRENT_SINK_2,
+ .flags = IORESOURCE_IO,
+ },
+ {
+ .start = WM831X_IRQ_CS2,
+ .end = WM831X_IRQ_CS2,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource wm831x_ldo1_resources[] = {
+ {
+ .start = WM831X_LDO1_CONTROL,
+ .end = WM831X_LDO1_SLEEP_CONTROL,
+ .flags = IORESOURCE_IO,
+ },
+ {
+ .name = "UV",
+ .start = WM831X_IRQ_UV_LDO1,
+ .end = WM831X_IRQ_UV_LDO1,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource wm831x_ldo2_resources[] = {
+ {
+ .start = WM831X_LDO2_CONTROL,
+ .end = WM831X_LDO2_SLEEP_CONTROL,
+ .flags = IORESOURCE_IO,
+ },
+ {
+ .name = "UV",
+ .start = WM831X_IRQ_UV_LDO2,
+ .end = WM831X_IRQ_UV_LDO2,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource wm831x_ldo3_resources[] = {
+ {
+ .start = WM831X_LDO3_CONTROL,
+ .end = WM831X_LDO3_SLEEP_CONTROL,
+ .flags = IORESOURCE_IO,
+ },
+ {
+ .name = "UV",
+ .start = WM831X_IRQ_UV_LDO3,
+ .end = WM831X_IRQ_UV_LDO3,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource wm831x_ldo4_resources[] = {
+ {
+ .start = WM831X_LDO4_CONTROL,
+ .end = WM831X_LDO4_SLEEP_CONTROL,
+ .flags = IORESOURCE_IO,
+ },
+ {
+ .name = "UV",
+ .start = WM831X_IRQ_UV_LDO4,
+ .end = WM831X_IRQ_UV_LDO4,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource wm831x_ldo5_resources[] = {
+ {
+ .start = WM831X_LDO5_CONTROL,
+ .end = WM831X_LDO5_SLEEP_CONTROL,
+ .flags = IORESOURCE_IO,
+ },
+ {
+ .name = "UV",
+ .start = WM831X_IRQ_UV_LDO5,
+ .end = WM831X_IRQ_UV_LDO5,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource wm831x_ldo6_resources[] = {
+ {
+ .start = WM831X_LDO6_CONTROL,
+ .end = WM831X_LDO6_SLEEP_CONTROL,
+ .flags = IORESOURCE_IO,
+ },
+ {
+ .name = "UV",
+ .start = WM831X_IRQ_UV_LDO6,
+ .end = WM831X_IRQ_UV_LDO6,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource wm831x_ldo7_resources[] = {
+ {
+ .start = WM831X_LDO7_CONTROL,
+ .end = WM831X_LDO7_SLEEP_CONTROL,
+ .flags = IORESOURCE_IO,
+ },
+ {
+ .name = "UV",
+ .start = WM831X_IRQ_UV_LDO7,
+ .end = WM831X_IRQ_UV_LDO7,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource wm831x_ldo8_resources[] = {
+ {
+ .start = WM831X_LDO8_CONTROL,
+ .end = WM831X_LDO8_SLEEP_CONTROL,
+ .flags = IORESOURCE_IO,
+ },
+ {
+ .name = "UV",
+ .start = WM831X_IRQ_UV_LDO8,
+ .end = WM831X_IRQ_UV_LDO8,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource wm831x_ldo9_resources[] = {
+ {
+ .start = WM831X_LDO9_CONTROL,
+ .end = WM831X_LDO9_SLEEP_CONTROL,
+ .flags = IORESOURCE_IO,
+ },
+ {
+ .name = "UV",
+ .start = WM831X_IRQ_UV_LDO9,
+ .end = WM831X_IRQ_UV_LDO9,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource wm831x_ldo10_resources[] = {
+ {
+ .start = WM831X_LDO10_CONTROL,
+ .end = WM831X_LDO10_SLEEP_CONTROL,
+ .flags = IORESOURCE_IO,
+ },
+ {
+ .name = "UV",
+ .start = WM831X_IRQ_UV_LDO10,
+ .end = WM831X_IRQ_UV_LDO10,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource wm831x_ldo11_resources[] = {
+ {
+ .start = WM831X_LDO11_ON_CONTROL,
+ .end = WM831X_LDO11_SLEEP_CONTROL,
+ .flags = IORESOURCE_IO,
+ },
+};
+
+static struct resource wm831x_on_resources[] = {
+ {
+ .start = WM831X_IRQ_ON,
+ .end = WM831X_IRQ_ON,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+
+static struct resource wm831x_power_resources[] = {
+ {
+ .name = "SYSLO",
+ .start = WM831X_IRQ_PPM_SYSLO,
+ .end = WM831X_IRQ_PPM_SYSLO,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "PWR SRC",
+ .start = WM831X_IRQ_PPM_PWR_SRC,
+ .end = WM831X_IRQ_PPM_PWR_SRC,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "USB CURR",
+ .start = WM831X_IRQ_PPM_USB_CURR,
+ .end = WM831X_IRQ_PPM_USB_CURR,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "BATT HOT",
+ .start = WM831X_IRQ_CHG_BATT_HOT,
+ .end = WM831X_IRQ_CHG_BATT_HOT,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "BATT COLD",
+ .start = WM831X_IRQ_CHG_BATT_COLD,
+ .end = WM831X_IRQ_CHG_BATT_COLD,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "BATT FAIL",
+ .start = WM831X_IRQ_CHG_BATT_FAIL,
+ .end = WM831X_IRQ_CHG_BATT_FAIL,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "OV",
+ .start = WM831X_IRQ_CHG_OV,
+ .end = WM831X_IRQ_CHG_OV,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "END",
+ .start = WM831X_IRQ_CHG_END,
+ .end = WM831X_IRQ_CHG_END,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "TO",
+ .start = WM831X_IRQ_CHG_TO,
+ .end = WM831X_IRQ_CHG_TO,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "MODE",
+ .start = WM831X_IRQ_CHG_MODE,
+ .end = WM831X_IRQ_CHG_MODE,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "START",
+ .start = WM831X_IRQ_CHG_START,
+ .end = WM831X_IRQ_CHG_START,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource wm831x_rtc_resources[] = {
+ {
+ .name = "PER",
+ .start = WM831X_IRQ_RTC_PER,
+ .end = WM831X_IRQ_RTC_PER,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "ALM",
+ .start = WM831X_IRQ_RTC_ALM,
+ .end = WM831X_IRQ_RTC_ALM,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource wm831x_status1_resources[] = {
+ {
+ .start = WM831X_STATUS_LED_1,
+ .end = WM831X_STATUS_LED_1,
+ .flags = IORESOURCE_IO,
+ },
+};
+
+static struct resource wm831x_status2_resources[] = {
+ {
+ .start = WM831X_STATUS_LED_2,
+ .end = WM831X_STATUS_LED_2,
+ .flags = IORESOURCE_IO,
+ },
+};
+
+static struct resource wm831x_touch_resources[] = {
+ {
+ .name = "TCHPD",
+ .start = WM831X_IRQ_TCHPD,
+ .end = WM831X_IRQ_TCHPD,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "TCHDATA",
+ .start = WM831X_IRQ_TCHDATA,
+ .end = WM831X_IRQ_TCHDATA,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource wm831x_wdt_resources[] = {
+ {
+ .start = WM831X_IRQ_WDOG_TO,
+ .end = WM831X_IRQ_WDOG_TO,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct mfd_cell wm8310_devs[] = {
+ {
+ .name = "wm831x-buckv",
+ .id = 1,
+ .num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
+ .resources = wm831x_dcdc1_resources,
+ },
+ {
+ .name = "wm831x-buckv",
+ .id = 2,
+ .num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
+ .resources = wm831x_dcdc2_resources,
+ },
+ {
+ .name = "wm831x-buckp",
+ .id = 3,
+ .num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
+ .resources = wm831x_dcdc3_resources,
+ },
+ {
+ .name = "wm831x-boostp",
+ .id = 4,
+ .num_resources = ARRAY_SIZE(wm831x_dcdc4_resources),
+ .resources = wm831x_dcdc4_resources,
+ },
+ {
+ .name = "wm831x-epe",
+ .id = 1,
+ },
+ {
+ .name = "wm831x-epe",
+ .id = 2,
+ },
+ {
+ .name = "wm831x-gpio",
+ .num_resources = ARRAY_SIZE(wm831x_gpio_resources),
+ .resources = wm831x_gpio_resources,
+ },
+ {
+ .name = "wm831x-hwmon",
+ },
+ {
+ .name = "wm831x-isink",
+ .id = 1,
+ .num_resources = ARRAY_SIZE(wm831x_isink1_resources),
+ .resources = wm831x_isink1_resources,
+ },
+ {
+ .name = "wm831x-isink",
+ .id = 2,
+ .num_resources = ARRAY_SIZE(wm831x_isink2_resources),
+ .resources = wm831x_isink2_resources,
+ },
+ {
+ .name = "wm831x-ldo",
+ .id = 1,
+ .num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
+ .resources = wm831x_ldo1_resources,
+ },
+ {
+ .name = "wm831x-ldo",
+ .id = 2,
+ .num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
+ .resources = wm831x_ldo2_resources,
+ },
+ {
+ .name = "wm831x-ldo",
+ .id = 3,
+ .num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
+ .resources = wm831x_ldo3_resources,
+ },
+ {
+ .name = "wm831x-ldo",
+ .id = 4,
+ .num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
+ .resources = wm831x_ldo4_resources,
+ },
+ {
+ .name = "wm831x-ldo",
+ .id = 5,
+ .num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
+ .resources = wm831x_ldo5_resources,
+ },
+ {
+ .name = "wm831x-ldo",
+ .id = 6,
+ .num_resources = ARRAY_SIZE(wm831x_ldo6_resources),
+ .resources = wm831x_ldo6_resources,
+ },
+ {
+ .name = "wm831x-aldo",
+ .id = 7,
+ .num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
+ .resources = wm831x_ldo7_resources,
+ },
+ {
+ .name = "wm831x-aldo",
+ .id = 8,
+ .num_resources = ARRAY_SIZE(wm831x_ldo8_resources),
+ .resources = wm831x_ldo8_resources,
+ },
+ {
+ .name = "wm831x-aldo",
+ .id = 9,
+ .num_resources = ARRAY_SIZE(wm831x_ldo9_resources),
+ .resources = wm831x_ldo9_resources,
+ },
+ {
+ .name = "wm831x-aldo",
+ .id = 10,
+ .num_resources = ARRAY_SIZE(wm831x_ldo10_resources),
+ .resources = wm831x_ldo10_resources,
+ },
+ {
+ .name = "wm831x-alive-ldo",
+ .id = 11,
+ .num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
+ .resources = wm831x_ldo11_resources,
+ },
+ {
+ .name = "wm831x-on",
+ .num_resources = ARRAY_SIZE(wm831x_on_resources),
+ .resources = wm831x_on_resources,
+ },
+ {
+ .name = "wm831x-power",
+ .num_resources = ARRAY_SIZE(wm831x_power_resources),
+ .resources = wm831x_power_resources,
+ },
+ {
+ .name = "wm831x-rtc",
+ .num_resources = ARRAY_SIZE(wm831x_rtc_resources),
+ .resources = wm831x_rtc_resources,
+ },
+ {
+ .name = "wm831x-status",
+ .id = 1,
+ .num_resources = ARRAY_SIZE(wm831x_status1_resources),
+ .resources = wm831x_status1_resources,
+ },
+ {
+ .name = "wm831x-status",
+ .id = 2,
+ .num_resources = ARRAY_SIZE(wm831x_status2_resources),
+ .resources = wm831x_status2_resources,
+ },
+ {
+ .name = "wm831x-watchdog",
+ .num_resources = ARRAY_SIZE(wm831x_wdt_resources),
+ .resources = wm831x_wdt_resources,
+ },
+};
+
+static struct mfd_cell wm8311_devs[] = {
+ {
+ .name = "wm831x-buckv",
+ .id = 1,
+ .num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
+ .resources = wm831x_dcdc1_resources,
+ },
+ {
+ .name = "wm831x-buckv",
+ .id = 2,
+ .num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
+ .resources = wm831x_dcdc2_resources,
+ },
+ {
+ .name = "wm831x-buckp",
+ .id = 3,
+ .num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
+ .resources = wm831x_dcdc3_resources,
+ },
+ {
+ .name = "wm831x-boostp",
+ .id = 4,
+ .num_resources = ARRAY_SIZE(wm831x_dcdc4_resources),
+ .resources = wm831x_dcdc4_resources,
+ },
+ {
+ .name = "wm831x-epe",
+ .id = 1,
+ },
+ {
+ .name = "wm831x-epe",
+ .id = 2,
+ },
+ {
+ .name = "wm831x-gpio",
+ .num_resources = ARRAY_SIZE(wm831x_gpio_resources),
+ .resources = wm831x_gpio_resources,
+ },
+ {
+ .name = "wm831x-hwmon",
+ },
+ {
+ .name = "wm831x-isink",
+ .id = 1,
+ .num_resources = ARRAY_SIZE(wm831x_isink1_resources),
+ .resources = wm831x_isink1_resources,
+ },
+ {
+ .name = "wm831x-isink",
+ .id = 2,
+ .num_resources = ARRAY_SIZE(wm831x_isink2_resources),
+ .resources = wm831x_isink2_resources,
+ },
+ {
+ .name = "wm831x-ldo",
+ .id = 1,
+ .num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
+ .resources = wm831x_ldo1_resources,
+ },
+ {
+ .name = "wm831x-ldo",
+ .id = 2,
+ .num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
+ .resources = wm831x_ldo2_resources,
+ },
+ {
+ .name = "wm831x-ldo",
+ .id = 3,
+ .num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
+ .resources = wm831x_ldo3_resources,
+ },
+ {
+ .name = "wm831x-ldo",
+ .id = 4,
+ .num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
+ .resources = wm831x_ldo4_resources,
+ },
+ {
+ .name = "wm831x-ldo",
+ .id = 5,
+ .num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
+ .resources = wm831x_ldo5_resources,
+ },
+ {
+ .name = "wm831x-aldo",
+ .id = 7,
+ .num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
+ .resources = wm831x_ldo7_resources,
+ },
+ {
+ .name = "wm831x-alive-ldo",
+ .id = 11,
+ .num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
+ .resources = wm831x_ldo11_resources,
+ },
+ {
+ .name = "wm831x-on",
+ .num_resources = ARRAY_SIZE(wm831x_on_resources),
+ .resources = wm831x_on_resources,
+ },
+ {
+ .name = "wm831x-power",
+ .num_resources = ARRAY_SIZE(wm831x_power_resources),
+ .resources = wm831x_power_resources,
+ },
+ {
+ .name = "wm831x-rtc",
+ .num_resources = ARRAY_SIZE(wm831x_rtc_resources),
+ .resources = wm831x_rtc_resources,
+ },
+ {
+ .name = "wm831x-status",
+ .id = 1,
+ .num_resources = ARRAY_SIZE(wm831x_status1_resources),
+ .resources = wm831x_status1_resources,
+ },
+ {
+ .name = "wm831x-status",
+ .id = 2,
+ .num_resources = ARRAY_SIZE(wm831x_status2_resources),
+ .resources = wm831x_status2_resources,
+ },
+ {
+ .name = "wm831x-touch",
+ .num_resources = ARRAY_SIZE(wm831x_touch_resources),
+ .resources = wm831x_touch_resources,
+ },
+ {
+ .name = "wm831x-watchdog",
+ .num_resources = ARRAY_SIZE(wm831x_wdt_resources),
+ .resources = wm831x_wdt_resources,
+ },
+};
+
+static struct mfd_cell wm8312_devs[] = {
+ {
+ .name = "wm831x-buckv",
+ .id = 1,
+ .num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
+ .resources = wm831x_dcdc1_resources,
+ },
+ {
+ .name = "wm831x-buckv",
+ .id = 2,
+ .num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
+ .resources = wm831x_dcdc2_resources,
+ },
+ {
+ .name = "wm831x-buckp",
+ .id = 3,
+ .num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
+ .resources = wm831x_dcdc3_resources,
+ },
+ {
+ .name = "wm831x-boostp",
+ .id = 4,
+ .num_resources = ARRAY_SIZE(wm831x_dcdc4_resources),
+ .resources = wm831x_dcdc4_resources,
+ },
+ {
+ .name = "wm831x-epe",
+ .id = 1,
+ },
+ {
+ .name = "wm831x-epe",
+ .id = 2,
+ },
+ {
+ .name = "wm831x-gpio",
+ .num_resources = ARRAY_SIZE(wm831x_gpio_resources),
+ .resources = wm831x_gpio_resources,
+ },
+ {
+ .name = "wm831x-hwmon",
+ },
+ {
+ .name = "wm831x-isink",
+ .id = 1,
+ .num_resources = ARRAY_SIZE(wm831x_isink1_resources),
+ .resources = wm831x_isink1_resources,
+ },
+ {
+ .name = "wm831x-isink",
+ .id = 2,
+ .num_resources = ARRAY_SIZE(wm831x_isink2_resources),
+ .resources = wm831x_isink2_resources,
+ },
+ {
+ .name = "wm831x-ldo",
+ .id = 1,
+ .num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
+ .resources = wm831x_ldo1_resources,
+ },
+ {
+ .name = "wm831x-ldo",
+ .id = 2,
+ .num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
+ .resources = wm831x_ldo2_resources,
+ },
+ {
+ .name = "wm831x-ldo",
+ .id = 3,
+ .num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
+ .resources = wm831x_ldo3_resources,
+ },
+ {
+ .name = "wm831x-ldo",
+ .id = 4,
+ .num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
+ .resources = wm831x_ldo4_resources,
+ },
+ {
+ .name = "wm831x-ldo",
+ .id = 5,
+ .num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
+ .resources = wm831x_ldo5_resources,
+ },
+ {
+ .name = "wm831x-ldo",
+ .id = 6,
+ .num_resources = ARRAY_SIZE(wm831x_ldo6_resources),
+ .resources = wm831x_ldo6_resources,
+ },
+ {
+ .name = "wm831x-aldo",
+ .id = 7,
+ .num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
+ .resources = wm831x_ldo7_resources,
+ },
+ {
+ .name = "wm831x-aldo",
+ .id = 8,
+ .num_resources = ARRAY_SIZE(wm831x_ldo8_resources),
+ .resources = wm831x_ldo8_resources,
+ },
+ {
+ .name = "wm831x-aldo",
+ .id = 9,
+ .num_resources = ARRAY_SIZE(wm831x_ldo9_resources),
+ .resources = wm831x_ldo9_resources,
+ },
+ {
+ .name = "wm831x-aldo",
+ .id = 10,
+ .num_resources = ARRAY_SIZE(wm831x_ldo10_resources),
+ .resources = wm831x_ldo10_resources,
+ },
+ {
+ .name = "wm831x-alive-ldo",
+ .id = 11,
+ .num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
+ .resources = wm831x_ldo11_resources,
+ },
+ {
+ .name = "wm831x-on",
+ .num_resources = ARRAY_SIZE(wm831x_on_resources),
+ .resources = wm831x_on_resources,
+ },
+ {
+ .name = "wm831x-power",
+ .num_resources = ARRAY_SIZE(wm831x_power_resources),
+ .resources = wm831x_power_resources,
+ },
+ {
+ .name = "wm831x-rtc",
+ .num_resources = ARRAY_SIZE(wm831x_rtc_resources),
+ .resources = wm831x_rtc_resources,
+ },
+ {
+ .name = "wm831x-status",
+ .id = 1,
+ .num_resources = ARRAY_SIZE(wm831x_status1_resources),
+ .resources = wm831x_status1_resources,
+ },
+ {
+ .name = "wm831x-status",
+ .id = 2,
+ .num_resources = ARRAY_SIZE(wm831x_status2_resources),
+ .resources = wm831x_status2_resources,
+ },
+ {
+ .name = "wm831x-touch",
+ .num_resources = ARRAY_SIZE(wm831x_touch_resources),
+ .resources = wm831x_touch_resources,
+ },
+ {
+ .name = "wm831x-watchdog",
+ .num_resources = ARRAY_SIZE(wm831x_wdt_resources),
+ .resources = wm831x_wdt_resources,
+ },
+};
+
+static struct mfd_cell backlight_devs[] = {
+ {
+ .name = "wm831x-backlight",
+ },
+};
+
+/*
+ * Instantiate the generic non-control parts of the device.
+ */
+static int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq)
+{
+ struct wm831x_pdata *pdata = wm831x->dev->platform_data;
+ int rev;
+ enum wm831x_parent parent;
+ int ret;
+
+ mutex_init(&wm831x->io_lock);
+ mutex_init(&wm831x->key_lock);
+ mutex_init(&wm831x->auxadc_lock);
+ dev_set_drvdata(wm831x->dev, wm831x);
+
+ ret = wm831x_reg_read(wm831x, WM831X_PARENT_ID);
+ if (ret < 0) {
+ dev_err(wm831x->dev, "Failed to read parent ID: %d\n", ret);
+ goto err;
+ }
+ if (ret != 0x6204) {
+ dev_err(wm831x->dev, "Device is not a WM831x: ID %x\n", ret);
+ ret = -EINVAL;
+ goto err;
+ }
+
+ ret = wm831x_reg_read(wm831x, WM831X_REVISION);
+ if (ret < 0) {
+ dev_err(wm831x->dev, "Failed to read revision: %d\n", ret);
+ goto err;
+ }
+ rev = (ret & WM831X_PARENT_REV_MASK) >> WM831X_PARENT_REV_SHIFT;
+
+ ret = wm831x_reg_read(wm831x, WM831X_RESET_ID);
+ if (ret < 0) {
+ dev_err(wm831x->dev, "Failed to read device ID: %d\n", ret);
+ goto err;
+ }
+
+ switch (ret) {
+ case 0x8310:
+ parent = WM8310;
+ switch (rev) {
+ case 0:
+ dev_info(wm831x->dev, "WM8310 revision %c\n",
+ 'A' + rev);
+ break;
+ }
+ break;
+
+ case 0x8311:
+ parent = WM8311;
+ switch (rev) {
+ case 0:
+ dev_info(wm831x->dev, "WM8311 revision %c\n",
+ 'A' + rev);
+ break;
+ }
+ break;
+
+ case 0x8312:
+ parent = WM8312;
+ switch (rev) {
+ case 0:
+ dev_info(wm831x->dev, "WM8312 revision %c\n",
+ 'A' + rev);
+ break;
+ }
+ break;
+
+ case 0:
+ /* Some engineering samples do not have the ID set,
+ * rely on the device being registered correctly.
+ * This will need revisiting for future devices with
+ * multiple dies.
+ */
+ parent = id;
+ switch (rev) {
+ case 0:
+ dev_info(wm831x->dev, "WM831%d ES revision %c\n",
+ parent, 'A' + rev);
+ break;
+ }
+ break;
+
+ default:
+ dev_err(wm831x->dev, "Unknown WM831x device %04x\n", ret);
+ ret = -EINVAL;
+ goto err;
+ }
+
+ /* This will need revisiting in future but is OK for all
+ * current parts.
+ */
+ if (parent != id)
+ dev_warn(wm831x->dev, "Device was registered as a WM831%lu\n",
+ id);
+
+ /* Bootstrap the user key */
+ ret = wm831x_reg_read(wm831x, WM831X_SECURITY_KEY);
+ if (ret < 0) {
+ dev_err(wm831x->dev, "Failed to read security key: %d\n", ret);
+ goto err;
+ }
+ if (ret != 0) {
+ dev_warn(wm831x->dev, "Security key had non-zero value %x\n",
+ ret);
+ wm831x_reg_write(wm831x, WM831X_SECURITY_KEY, 0);
+ }
+ wm831x->locked = 1;
+
+ if (pdata && pdata->pre_init) {
+ ret = pdata->pre_init(wm831x);
+ if (ret != 0) {
+ dev_err(wm831x->dev, "pre_init() failed: %d\n", ret);
+ goto err;
+ }
+ }
+
+ ret = wm831x_irq_init(wm831x, irq);
+ if (ret != 0)
+ goto err;
+
+ /* The core device is up, instantiate the subdevices. */
+ switch (parent) {
+ case WM8310:
+ ret = mfd_add_devices(wm831x->dev, -1,
+ wm8310_devs, ARRAY_SIZE(wm8310_devs),
+ NULL, 0);
+ break;
+
+ case WM8311:
+ ret = mfd_add_devices(wm831x->dev, -1,
+ wm8311_devs, ARRAY_SIZE(wm8311_devs),
+ NULL, 0);
+ break;
+
+ case WM8312:
+ ret = mfd_add_devices(wm831x->dev, -1,
+ wm8312_devs, ARRAY_SIZE(wm8312_devs),
+ NULL, 0);
+ break;
+
+ default:
+ /* If this happens the bus probe function is buggy */
+ BUG();
+ }
+
+ if (ret != 0) {
+ dev_err(wm831x->dev, "Failed to add children\n");
+ goto err_irq;
+ }
+
+ if (pdata && pdata->backlight) {
+ /* Treat errors as non-critical */
+ ret = mfd_add_devices(wm831x->dev, -1, backlight_devs,
+ ARRAY_SIZE(backlight_devs), NULL, 0);
+ if (ret < 0)
+ dev_err(wm831x->dev, "Failed to add backlight: %d\n",
+ ret);
+ }
+
+ wm831x_otp_init(wm831x);
+
+ if (pdata && pdata->post_init) {
+ ret = pdata->post_init(wm831x);
+ if (ret != 0) {
+ dev_err(wm831x->dev, "post_init() failed: %d\n", ret);
+ goto err_irq;
+ }
+ }
+
+ return 0;
+
+err_irq:
+ wm831x_irq_exit(wm831x);
+err:
+ mfd_remove_devices(wm831x->dev);
+ kfree(wm831x);
+ return ret;
+}
+
+static void wm831x_device_exit(struct wm831x *wm831x)
+{
+ wm831x_otp_exit(wm831x);
+ mfd_remove_devices(wm831x->dev);
+ wm831x_irq_exit(wm831x);
+ kfree(wm831x);
+}
+
+static int wm831x_i2c_read_device(struct wm831x *wm831x, unsigned short reg,
+ int bytes, void *dest)
+{
+ struct i2c_client *i2c = wm831x->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 wm831x_i2c_write_device(struct wm831x *wm831x, unsigned short reg,
+ int bytes, void *src)
+{
+ struct i2c_client *i2c = wm831x->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 wm831x_i2c_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
+{
+ struct wm831x *wm831x;
+
+ wm831x = kzalloc(sizeof(struct wm831x), GFP_KERNEL);
+ if (wm831x == NULL) {
+ kfree(i2c);
+ return -ENOMEM;
+ }
+
+ i2c_set_clientdata(i2c, wm831x);
+ wm831x->dev = &i2c->dev;
+ wm831x->control_data = i2c;
+ wm831x->read_dev = wm831x_i2c_read_device;
+ wm831x->write_dev = wm831x_i2c_write_device;
+
+ return wm831x_device_init(wm831x, id->driver_data, i2c->irq);
+}
+
+static int wm831x_i2c_remove(struct i2c_client *i2c)
+{
+ struct wm831x *wm831x = i2c_get_clientdata(i2c);
+
+ wm831x_device_exit(wm831x);
+
+ return 0;
+}
+
+static const struct i2c_device_id wm831x_i2c_id[] = {
+ { "wm8310", WM8310 },
+ { "wm8311", WM8311 },
+ { "wm8312", WM8312 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, wm831x_i2c_id);
+
+
+static struct i2c_driver wm831x_i2c_driver = {
+ .driver = {
+ .name = "wm831x",
+ .owner = THIS_MODULE,
+ },
+ .probe = wm831x_i2c_probe,
+ .remove = wm831x_i2c_remove,
+ .id_table = wm831x_i2c_id,
+};
+
+static int __init wm831x_i2c_init(void)
+{
+ int ret;
+
+ ret = i2c_add_driver(&wm831x_i2c_driver);
+ if (ret != 0)
+ pr_err("Failed to register wm831x I2C driver: %d\n", ret);
+
+ return ret;
+}
+subsys_initcall(wm831x_i2c_init);
+
+static void __exit wm831x_i2c_exit(void)
+{
+ i2c_del_driver(&wm831x_i2c_driver);
+}
+module_exit(wm831x_i2c_exit);
+
+MODULE_DESCRIPTION("I2C support for the WM831X AudioPlus PMIC");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Mark Brown");
diff --git a/drivers/mfd/wm831x-irq.c b/drivers/mfd/wm831x-irq.c
new file mode 100644
index 00000000000..d3015dfb913
--- /dev/null
+++ b/drivers/mfd/wm831x-irq.c
@@ -0,0 +1,559 @@
+/*
+ * wm831x-irq.c -- Interrupt controller support for Wolfson WM831x PMICs
+ *
+ * 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/mfd/core.h>
+#include <linux/interrupt.h>
+
+#include <linux/mfd/wm831x/core.h>
+#include <linux/mfd/wm831x/pdata.h>
+#include <linux/mfd/wm831x/irq.h>
+
+#include <linux/delay.h>
+
+/*
+ * Since generic IRQs don't currently support interrupt controllers on
+ * interrupt driven buses we don't use genirq but instead provide an
+ * interface that looks very much like the standard ones. This leads
+ * to some bodges, including storing interrupt handler information in
+ * the static irq_data table we use to look up the data for individual
+ * interrupts, but hopefully won't last too long.
+ */
+
+struct wm831x_irq_data {
+ int primary;
+ int reg;
+ int mask;
+ irq_handler_t handler;
+ void *handler_data;
+};
+
+static struct wm831x_irq_data wm831x_irqs[] = {
+ [WM831X_IRQ_TEMP_THW] = {
+ .primary = WM831X_TEMP_INT,
+ .reg = 1,
+ .mask = WM831X_TEMP_THW_EINT,
+ },
+ [WM831X_IRQ_GPIO_1] = {
+ .primary = WM831X_GP_INT,
+ .reg = 5,
+ .mask = WM831X_GP1_EINT,
+ },
+ [WM831X_IRQ_GPIO_2] = {
+ .primary = WM831X_GP_INT,
+ .reg = 5,
+ .mask = WM831X_GP2_EINT,
+ },
+ [WM831X_IRQ_GPIO_3] = {
+ .primary = WM831X_GP_INT,
+ .reg = 5,
+ .mask = WM831X_GP3_EINT,
+ },
+ [WM831X_IRQ_GPIO_4] = {
+ .primary = WM831X_GP_INT,
+ .reg = 5,
+ .mask = WM831X_GP4_EINT,
+ },
+ [WM831X_IRQ_GPIO_5] = {
+ .primary = WM831X_GP_INT,
+ .reg = 5,
+ .mask = WM831X_GP5_EINT,
+ },
+ [WM831X_IRQ_GPIO_6] = {
+ .primary = WM831X_GP_INT,
+ .reg = 5,
+ .mask = WM831X_GP6_EINT,
+ },
+ [WM831X_IRQ_GPIO_7] = {
+ .primary = WM831X_GP_INT,
+ .reg = 5,
+ .mask = WM831X_GP7_EINT,
+ },
+ [WM831X_IRQ_GPIO_8] = {
+ .primary = WM831X_GP_INT,
+ .reg = 5,
+ .mask = WM831X_GP8_EINT,
+ },
+ [WM831X_IRQ_GPIO_9] = {
+ .primary = WM831X_GP_INT,
+ .reg = 5,
+ .mask = WM831X_GP9_EINT,
+ },
+ [WM831X_IRQ_GPIO_10] = {
+ .primary = WM831X_GP_INT,
+ .reg = 5,
+ .mask = WM831X_GP10_EINT,
+ },
+ [WM831X_IRQ_GPIO_11] = {
+ .primary = WM831X_GP_INT,
+ .reg = 5,
+ .mask = WM831X_GP11_EINT,
+ },
+ [WM831X_IRQ_GPIO_12] = {
+ .primary = WM831X_GP_INT,
+ .reg = 5,
+ .mask = WM831X_GP12_EINT,
+ },
+ [WM831X_IRQ_GPIO_13] = {
+ .primary = WM831X_GP_INT,
+ .reg = 5,
+ .mask = WM831X_GP13_EINT,
+ },
+ [WM831X_IRQ_GPIO_14] = {
+ .primary = WM831X_GP_INT,
+ .reg = 5,
+ .mask = WM831X_GP14_EINT,
+ },
+ [WM831X_IRQ_GPIO_15] = {
+ .primary = WM831X_GP_INT,
+ .reg = 5,
+ .mask = WM831X_GP15_EINT,
+ },
+ [WM831X_IRQ_GPIO_16] = {
+ .primary = WM831X_GP_INT,
+ .reg = 5,
+ .mask = WM831X_GP16_EINT,
+ },
+ [WM831X_IRQ_ON] = {
+ .primary = WM831X_ON_PIN_INT,
+ .reg = 1,
+ .mask = WM831X_ON_PIN_EINT,
+ },
+ [WM831X_IRQ_PPM_SYSLO] = {
+ .primary = WM831X_PPM_INT,
+ .reg = 1,
+ .mask = WM831X_PPM_SYSLO_EINT,
+ },
+ [WM831X_IRQ_PPM_PWR_SRC] = {
+ .primary = WM831X_PPM_INT,
+ .reg = 1,
+ .mask = WM831X_PPM_PWR_SRC_EINT,
+ },
+ [WM831X_IRQ_PPM_USB_CURR] = {
+ .primary = WM831X_PPM_INT,
+ .reg = 1,
+ .mask = WM831X_PPM_USB_CURR_EINT,
+ },
+ [WM831X_IRQ_WDOG_TO] = {
+ .primary = WM831X_WDOG_INT,
+ .reg = 1,
+ .mask = WM831X_WDOG_TO_EINT,
+ },
+ [WM831X_IRQ_RTC_PER] = {
+ .primary = WM831X_RTC_INT,
+ .reg = 1,
+ .mask = WM831X_RTC_PER_EINT,
+ },
+ [WM831X_IRQ_RTC_ALM] = {
+ .primary = WM831X_RTC_INT,
+ .reg = 1,
+ .mask = WM831X_RTC_ALM_EINT,
+ },
+ [WM831X_IRQ_CHG_BATT_HOT] = {
+ .primary = WM831X_CHG_INT,
+ .reg = 2,
+ .mask = WM831X_CHG_BATT_HOT_EINT,
+ },
+ [WM831X_IRQ_CHG_BATT_COLD] = {
+ .primary = WM831X_CHG_INT,
+ .reg = 2,
+ .mask = WM831X_CHG_BATT_COLD_EINT,
+ },
+ [WM831X_IRQ_CHG_BATT_FAIL] = {
+ .primary = WM831X_CHG_INT,
+ .reg = 2,
+ .mask = WM831X_CHG_BATT_FAIL_EINT,
+ },
+ [WM831X_IRQ_CHG_OV] = {
+ .primary = WM831X_CHG_INT,
+ .reg = 2,
+ .mask = WM831X_CHG_OV_EINT,
+ },
+ [WM831X_IRQ_CHG_END] = {
+ .primary = WM831X_CHG_INT,
+ .reg = 2,
+ .mask = WM831X_CHG_END_EINT,
+ },
+ [WM831X_IRQ_CHG_TO] = {
+ .primary = WM831X_CHG_INT,
+ .reg = 2,
+ .mask = WM831X_CHG_TO_EINT,
+ },
+ [WM831X_IRQ_CHG_MODE] = {
+ .primary = WM831X_CHG_INT,
+ .reg = 2,
+ .mask = WM831X_CHG_MODE_EINT,
+ },
+ [WM831X_IRQ_CHG_START] = {
+ .primary = WM831X_CHG_INT,
+ .reg = 2,
+ .mask = WM831X_CHG_START_EINT,
+ },
+ [WM831X_IRQ_TCHDATA] = {
+ .primary = WM831X_TCHDATA_INT,
+ .reg = 1,
+ .mask = WM831X_TCHDATA_EINT,
+ },
+ [WM831X_IRQ_TCHPD] = {
+ .primary = WM831X_TCHPD_INT,
+ .reg = 1,
+ .mask = WM831X_TCHPD_EINT,
+ },
+ [WM831X_IRQ_AUXADC_DATA] = {
+ .primary = WM831X_AUXADC_INT,
+ .reg = 1,
+ .mask = WM831X_AUXADC_DATA_EINT,
+ },
+ [WM831X_IRQ_AUXADC_DCOMP1] = {
+ .primary = WM831X_AUXADC_INT,
+ .reg = 1,
+ .mask = WM831X_AUXADC_DCOMP1_EINT,
+ },
+ [WM831X_IRQ_AUXADC_DCOMP2] = {
+ .primary = WM831X_AUXADC_INT,
+ .reg = 1,
+ .mask = WM831X_AUXADC_DCOMP2_EINT,
+ },
+ [WM831X_IRQ_AUXADC_DCOMP3] = {
+ .primary = WM831X_AUXADC_INT,
+ .reg = 1,
+ .mask = WM831X_AUXADC_DCOMP3_EINT,
+ },
+ [WM831X_IRQ_AUXADC_DCOMP4] = {
+ .primary = WM831X_AUXADC_INT,
+ .reg = 1,
+ .mask = WM831X_AUXADC_DCOMP4_EINT,
+ },
+ [WM831X_IRQ_CS1] = {
+ .primary = WM831X_CS_INT,
+ .reg = 2,
+ .mask = WM831X_CS1_EINT,
+ },
+ [WM831X_IRQ_CS2] = {
+ .primary = WM831X_CS_INT,
+ .reg = 2,
+ .mask = WM831X_CS2_EINT,
+ },
+ [WM831X_IRQ_HC_DC1] = {
+ .primary = WM831X_HC_INT,
+ .reg = 4,
+ .mask = WM831X_HC_DC1_EINT,
+ },
+ [WM831X_IRQ_HC_DC2] = {
+ .primary = WM831X_HC_INT,
+ .reg = 4,
+ .mask = WM831X_HC_DC2_EINT,
+ },
+ [WM831X_IRQ_UV_LDO1] = {
+ .primary = WM831X_UV_INT,
+ .reg = 3,
+ .mask = WM831X_UV_LDO1_EINT,
+ },
+ [WM831X_IRQ_UV_LDO2] = {
+ .primary = WM831X_UV_INT,
+ .reg = 3,
+ .mask = WM831X_UV_LDO2_EINT,
+ },
+ [WM831X_IRQ_UV_LDO3] = {
+ .primary = WM831X_UV_INT,
+ .reg = 3,
+ .mask = WM831X_UV_LDO3_EINT,
+ },
+ [WM831X_IRQ_UV_LDO4] = {
+ .primary = WM831X_UV_INT,
+ .reg = 3,
+ .mask = WM831X_UV_LDO4_EINT,
+ },
+ [WM831X_IRQ_UV_LDO5] = {
+ .primary = WM831X_UV_INT,
+ .reg = 3,
+ .mask = WM831X_UV_LDO5_EINT,
+ },
+ [WM831X_IRQ_UV_LDO6] = {
+ .primary = WM831X_UV_INT,
+ .reg = 3,
+ .mask = WM831X_UV_LDO6_EINT,
+ },
+ [WM831X_IRQ_UV_LDO7] = {
+ .primary = WM831X_UV_INT,
+ .reg = 3,
+ .mask = WM831X_UV_LDO7_EINT,
+ },
+ [WM831X_IRQ_UV_LDO8] = {
+ .primary = WM831X_UV_INT,
+ .reg = 3,
+ .mask = WM831X_UV_LDO8_EINT,
+ },
+ [WM831X_IRQ_UV_LDO9] = {
+ .primary = WM831X_UV_INT,
+ .reg = 3,
+ .mask = WM831X_UV_LDO9_EINT,
+ },
+ [WM831X_IRQ_UV_LDO10] = {
+ .primary = WM831X_UV_INT,
+ .reg = 3,
+ .mask = WM831X_UV_LDO10_EINT,
+ },
+ [WM831X_IRQ_UV_DC1] = {
+ .primary = WM831X_UV_INT,
+ .reg = 4,
+ .mask = WM831X_UV_DC1_EINT,
+ },
+ [WM831X_IRQ_UV_DC2] = {
+ .primary = WM831X_UV_INT,
+ .reg = 4,
+ .mask = WM831X_UV_DC2_EINT,
+ },
+ [WM831X_IRQ_UV_DC3] = {
+ .primary = WM831X_UV_INT,
+ .reg = 4,
+ .mask = WM831X_UV_DC3_EINT,
+ },
+ [WM831X_IRQ_UV_DC4] = {
+ .primary = WM831X_UV_INT,
+ .reg = 4,
+ .mask = WM831X_UV_DC4_EINT,
+ },
+};
+
+static inline int irq_data_to_status_reg(struct wm831x_irq_data *irq_data)
+{
+ return WM831X_INTERRUPT_STATUS_1 - 1 + irq_data->reg;
+}
+
+static inline int irq_data_to_mask_reg(struct wm831x_irq_data *irq_data)
+{
+ return WM831X_INTERRUPT_STATUS_1_MASK - 1 + irq_data->reg;
+}
+
+static void __wm831x_enable_irq(struct wm831x *wm831x, int irq)
+{
+ struct wm831x_irq_data *irq_data = &wm831x_irqs[irq];
+
+ wm831x->irq_masks[irq_data->reg - 1] &= ~irq_data->mask;
+ wm831x_reg_write(wm831x, irq_data_to_mask_reg(irq_data),
+ wm831x->irq_masks[irq_data->reg - 1]);
+}
+
+void wm831x_enable_irq(struct wm831x *wm831x, int irq)
+{
+ mutex_lock(&wm831x->irq_lock);
+ __wm831x_enable_irq(wm831x, irq);
+ mutex_unlock(&wm831x->irq_lock);
+}
+EXPORT_SYMBOL_GPL(wm831x_enable_irq);
+
+static void __wm831x_disable_irq(struct wm831x *wm831x, int irq)
+{
+ struct wm831x_irq_data *irq_data = &wm831x_irqs[irq];
+
+ wm831x->irq_masks[irq_data->reg - 1] |= irq_data->mask;
+ wm831x_reg_write(wm831x, irq_data_to_mask_reg(irq_data),
+ wm831x->irq_masks[irq_data->reg - 1]);
+}
+
+void wm831x_disable_irq(struct wm831x *wm831x, int irq)
+{
+ mutex_lock(&wm831x->irq_lock);
+ __wm831x_disable_irq(wm831x, irq);
+ mutex_unlock(&wm831x->irq_lock);
+}
+EXPORT_SYMBOL_GPL(wm831x_disable_irq);
+
+int wm831x_request_irq(struct wm831x *wm831x,
+ unsigned int irq, irq_handler_t handler,
+ unsigned long flags, const char *name,
+ void *dev)
+{
+ int ret = 0;
+
+ if (irq < 0 || irq >= WM831X_NUM_IRQS)
+ return -EINVAL;
+
+ mutex_lock(&wm831x->irq_lock);
+
+ if (wm831x_irqs[irq].handler) {
+ dev_err(wm831x->dev, "Already have handler for IRQ %d\n", irq);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ wm831x_irqs[irq].handler = handler;
+ wm831x_irqs[irq].handler_data = dev;
+
+ __wm831x_enable_irq(wm831x, irq);
+
+out:
+ mutex_unlock(&wm831x->irq_lock);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(wm831x_request_irq);
+
+void wm831x_free_irq(struct wm831x *wm831x, unsigned int irq, void *data)
+{
+ if (irq < 0 || irq >= WM831X_NUM_IRQS)
+ return;
+
+ mutex_lock(&wm831x->irq_lock);
+
+ wm831x_irqs[irq].handler = NULL;
+ wm831x_irqs[irq].handler_data = NULL;
+
+ __wm831x_disable_irq(wm831x, irq);
+
+ mutex_unlock(&wm831x->irq_lock);
+}
+EXPORT_SYMBOL_GPL(wm831x_free_irq);
+
+
+static void wm831x_handle_irq(struct wm831x *wm831x, int irq, int status)
+{
+ struct wm831x_irq_data *irq_data = &wm831x_irqs[irq];
+
+ if (irq_data->handler) {
+ irq_data->handler(irq, irq_data->handler_data);
+ wm831x_reg_write(wm831x, irq_data_to_status_reg(irq_data),
+ irq_data->mask);
+ } else {
+ dev_err(wm831x->dev, "Unhandled IRQ %d, masking\n", irq);
+ __wm831x_disable_irq(wm831x, irq);
+ }
+}
+
+/* Main interrupt handling occurs in a workqueue since we need
+ * interrupts enabled to interact with the chip. */
+static void wm831x_irq_worker(struct work_struct *work)
+{
+ struct wm831x *wm831x = container_of(work, struct wm831x, irq_work);
+ unsigned int i;
+ int primary;
+ int status_regs[5];
+ int read[5] = { 0 };
+ int *status;
+
+ primary = wm831x_reg_read(wm831x, WM831X_SYSTEM_INTERRUPTS);
+ if (primary < 0) {
+ dev_err(wm831x->dev, "Failed to read system interrupt: %d\n",
+ primary);
+ goto out;
+ }
+
+ mutex_lock(&wm831x->irq_lock);
+
+ for (i = 0; i < ARRAY_SIZE(wm831x_irqs); i++) {
+ int offset = wm831x_irqs[i].reg - 1;
+
+ if (!(primary & wm831x_irqs[i].primary))
+ continue;
+
+ status = &status_regs[offset];
+
+ /* Hopefully there should only be one register to read
+ * each time otherwise we ought to do a block read. */
+ if (!read[offset]) {
+ *status = wm831x_reg_read(wm831x,
+ irq_data_to_status_reg(&wm831x_irqs[i]));
+ if (*status < 0) {
+ dev_err(wm831x->dev,
+ "Failed to read IRQ status: %d\n",
+ *status);
+ goto out_lock;
+ }
+
+ /* Mask out the disabled IRQs */
+ *status &= ~wm831x->irq_masks[offset];
+ read[offset] = 1;
+ }
+
+ if (*status & wm831x_irqs[i].mask)
+ wm831x_handle_irq(wm831x, i, *status);
+ }
+
+out_lock:
+ mutex_unlock(&wm831x->irq_lock);
+out:
+ enable_irq(wm831x->irq);
+}
+
+
+static irqreturn_t wm831x_cpu_irq(int irq, void *data)
+{
+ struct wm831x *wm831x = data;
+
+ /* Shut the interrupt to the CPU up and schedule the actual
+ * handler; we can't check that the IRQ is asserted. */
+ disable_irq_nosync(irq);
+
+ queue_work(wm831x->irq_wq, &wm831x->irq_work);
+
+ return IRQ_HANDLED;
+}
+
+int wm831x_irq_init(struct wm831x *wm831x, int irq)
+{
+ int i, ret;
+
+ if (!irq) {
+ dev_warn(wm831x->dev,
+ "No interrupt specified - functionality limited\n");
+ return 0;
+ }
+
+
+ wm831x->irq_wq = create_singlethread_workqueue("wm831x-irq");
+ if (!wm831x->irq_wq) {
+ dev_err(wm831x->dev, "Failed to allocate IRQ worker\n");
+ return -ESRCH;
+ }
+
+ wm831x->irq = irq;
+ mutex_init(&wm831x->irq_lock);
+ INIT_WORK(&wm831x->irq_work, wm831x_irq_worker);
+
+ /* Mask the individual interrupt sources */
+ for (i = 0; i < ARRAY_SIZE(wm831x->irq_masks); i++) {
+ wm831x->irq_masks[i] = 0xffff;
+ wm831x_reg_write(wm831x, WM831X_INTERRUPT_STATUS_1_MASK + i,
+ 0xffff);
+ }
+
+ /* Enable top level interrupts, we mask at secondary level */
+ wm831x_reg_write(wm831x, WM831X_SYSTEM_INTERRUPTS_MASK, 0);
+
+ /* We're good to go. We set IRQF_SHARED since there's a
+ * chance the driver will interoperate with another driver but
+ * the need to disable the IRQ while handing via I2C/SPI means
+ * that this may break and performance will be impacted. If
+ * this does happen it's a hardware design issue and the only
+ * other alternative would be polling.
+ */
+ ret = request_irq(irq, wm831x_cpu_irq, IRQF_TRIGGER_LOW | IRQF_SHARED,
+ "wm831x", wm831x);
+ if (ret != 0) {
+ dev_err(wm831x->dev, "Failed to request IRQ %d: %d\n",
+ irq, ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+void wm831x_irq_exit(struct wm831x *wm831x)
+{
+ if (wm831x->irq)
+ free_irq(wm831x->irq, wm831x);
+}
diff --git a/drivers/mfd/wm831x-otp.c b/drivers/mfd/wm831x-otp.c
new file mode 100644
index 00000000000..f742745ff35
--- /dev/null
+++ b/drivers/mfd/wm831x-otp.c
@@ -0,0 +1,83 @@
+/*
+ * wm831x-otp.c -- OTP for Wolfson WM831x PMICs
+ *
+ * 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/bcd.h>
+#include <linux/delay.h>
+#include <linux/mfd/core.h>
+
+#include <linux/mfd/wm831x/core.h>
+#include <linux/mfd/wm831x/otp.h>
+
+/* In bytes */
+#define WM831X_UNIQUE_ID_LEN 16
+
+/* Read the unique ID from the chip into id */
+static int wm831x_unique_id_read(struct wm831x *wm831x, char *id)
+{
+ int i, val;
+
+ for (i = 0; i < WM831X_UNIQUE_ID_LEN / 2; i++) {
+ val = wm831x_reg_read(wm831x, WM831X_UNIQUE_ID_1 + i);
+ if (val < 0)
+ return val;
+
+ id[i * 2] = (val >> 8) & 0xff;
+ id[(i * 2) + 1] = val & 0xff;
+ }
+
+ return 0;
+}
+
+static ssize_t wm831x_unique_id_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct wm831x *wm831x = dev_get_drvdata(dev);
+ int i, rval;
+ char id[WM831X_UNIQUE_ID_LEN];
+ ssize_t ret = 0;
+
+ rval = wm831x_unique_id_read(wm831x, id);
+ if (rval < 0)
+ return 0;
+
+ for (i = 0; i < WM831X_UNIQUE_ID_LEN; i++)
+ ret += sprintf(&buf[ret], "%02x", buf[i]);
+
+ ret += sprintf(&buf[ret], "\n");
+
+ return ret;
+}
+
+static DEVICE_ATTR(unique_id, 0444, wm831x_unique_id_show, NULL);
+
+int wm831x_otp_init(struct wm831x *wm831x)
+{
+ int ret;
+
+ ret = device_create_file(wm831x->dev, &dev_attr_unique_id);
+ if (ret != 0)
+ dev_err(wm831x->dev, "Unique ID attribute not created: %d\n",
+ ret);
+
+ return ret;
+}
+
+void wm831x_otp_exit(struct wm831x *wm831x)
+{
+ device_remove_file(wm831x->dev, &dev_attr_unique_id);
+}
+
diff --git a/drivers/mfd/wm8350-core.c b/drivers/mfd/wm8350-core.c
index fe24079387c..ba27c9dc1ad 100644
--- a/drivers/mfd/wm8350-core.c
+++ b/drivers/mfd/wm8350-core.c
@@ -353,15 +353,15 @@ static void wm8350_irq_call_handler(struct wm8350 *wm8350, int irq)
}
/*
- * wm8350_irq_worker actually handles the interrupts. Since all
+ * This is a threaded IRQ handler so can access I2C/SPI. Since all
* 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.
*/
-static void wm8350_irq_worker(struct work_struct *work)
+static irqreturn_t wm8350_irq(int irq, void *data)
{
- struct wm8350 *wm8350 = container_of(work, struct wm8350, irq_work);
+ struct wm8350 *wm8350 = data;
u16 level_one, status1, status2, comp;
/* TODO: Use block reads to improve performance? */
@@ -552,16 +552,6 @@ static void wm8350_irq_worker(struct work_struct *work)
}
}
- enable_irq(wm8350->chip_irq);
-}
-
-static irqreturn_t wm8350_irq(int irq, void *data)
-{
- struct wm8350 *wm8350 = data;
-
- disable_irq_nosync(irq);
- schedule_work(&wm8350->irq_work);
-
return IRQ_HANDLED;
}
@@ -1428,9 +1418,8 @@ int wm8350_device_init(struct wm8350 *wm8350, int irq,
mutex_init(&wm8350->auxadc_mutex);
mutex_init(&wm8350->irq_mutex);
- INIT_WORK(&wm8350->irq_work, wm8350_irq_worker);
if (irq) {
- int flags = 0;
+ int flags = IRQF_ONESHOT;
if (pdata && pdata->irq_high) {
flags |= IRQF_TRIGGER_HIGH;
@@ -1444,8 +1433,8 @@ int wm8350_device_init(struct wm8350 *wm8350, int irq,
WM8350_IRQ_POL);
}
- ret = request_irq(irq, wm8350_irq, flags,
- "wm8350", wm8350);
+ 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);
@@ -1472,6 +1461,8 @@ int wm8350_device_init(struct wm8350 *wm8350, int irq,
&(wm8350->codec.pdev));
wm8350_client_dev_register(wm8350, "wm8350-gpio",
&(wm8350->gpio.pdev));
+ wm8350_client_dev_register(wm8350, "wm8350-hwmon",
+ &(wm8350->hwmon.pdev));
wm8350_client_dev_register(wm8350, "wm8350-power",
&(wm8350->power.pdev));
wm8350_client_dev_register(wm8350, "wm8350-rtc", &(wm8350->rtc.pdev));
@@ -1498,11 +1489,11 @@ void wm8350_device_exit(struct wm8350 *wm8350)
platform_device_unregister(wm8350->wdt.pdev);
platform_device_unregister(wm8350->rtc.pdev);
platform_device_unregister(wm8350->power.pdev);
+ platform_device_unregister(wm8350->hwmon.pdev);
platform_device_unregister(wm8350->gpio.pdev);
platform_device_unregister(wm8350->codec.pdev);
free_irq(wm8350->chip_irq, wm8350);
- flush_work(&wm8350->irq_work);
kfree(wm8350->reg_cache);
}
EXPORT_SYMBOL_GPL(wm8350_device_exit);
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-18 15:17:25 +0000