mfd: PCF50633 core driver
This patch implements the core of the PCF50633 driver. This core driver has generic register read/write functions and does interrupt management for its sub devices. Signed-off-by: Balaji Rao <balajirrao@openmoko.org> Cc: Andy Green <andy@openmoko.com> Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
This commit is contained in:
Balaji Rao
Samuel Ortiz
Родитель
c59765042f
Коммит
f52046b14b
|
|
@ -217,6 +217,15 @@ config MFD_WM8350_I2C
|
|||
I2C as the control interface. Additional options must be
|
||||
selected to enable support for the functionality of the chip.
|
||||
|
||||
config MFD_PCF50633
|
||||
tristate "Support for NXP PCF50633"
|
||||
depends on I2C
|
||||
help
|
||||
Say yes here if you have NXP PCF50633 chip on your board.
|
||||
This core driver provides register access and IRQ handling
|
||||
facilities, and registers devices for the various functions
|
||||
so that function-specific drivers can bind to them.
|
||||
|
||||
endmenu
|
||||
|
||||
menu "Multimedia Capabilities Port drivers"
|
||||
|
|
|
|||
|
|
@ -37,3 +37,5 @@ endif
|
|||
obj-$(CONFIG_UCB1400_CORE) += ucb1400_core.o
|
||||
|
||||
obj-$(CONFIG_PMIC_DA903X) += da903x.o
|
||||
|
||||
obj-$(CONFIG_MFD_PCF50633) += pcf50633-core.o
|
||||
|
|
@ -0,0 +1,710 @@
|
|||
/* NXP PCF50633 Power Management Unit (PMU) driver
|
||||
*
|
||||
* (C) 2006-2008 by Openmoko, Inc.
|
||||
* Author: Harald Welte <laforge@openmoko.org>
|
||||
* Balaji Rao <balajirrao@openmoko.org>
|
||||
* All rights reserved.
|
||||
*
|
||||
* 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/device.h>
|
||||
#include <linux/sysfs.h>
|
||||
#include <linux/device.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/workqueue.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/i2c.h>
|
||||
#include <linux/irq.h>
|
||||
|
||||
#include <linux/mfd/pcf50633/core.h>
|
||||
|
||||
/* Two MBCS registers used during cold start */
|
||||
#define PCF50633_REG_MBCS1 0x4b
|
||||
#define PCF50633_REG_MBCS2 0x4c
|
||||
#define PCF50633_MBCS1_USBPRES 0x01
|
||||
#define PCF50633_MBCS1_ADAPTPRES 0x01
|
||||
|
||||
static int __pcf50633_read(struct pcf50633 *pcf, u8 reg, int num, u8 *data)
|
||||
{
|
||||
int ret;
|
||||
|
||||
ret = i2c_smbus_read_i2c_block_data(pcf->i2c_client, reg,
|
||||
num, data);
|
||||
if (ret < 0)
|
||||
dev_err(pcf->dev, "Error reading %d regs at %d\n", num, reg);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int __pcf50633_write(struct pcf50633 *pcf, u8 reg, int num, u8 *data)
|
||||
{
|
||||
int ret;
|
||||
|
||||
ret = i2c_smbus_write_i2c_block_data(pcf->i2c_client, reg,
|
||||
num, data);
|
||||
if (ret < 0)
|
||||
dev_err(pcf->dev, "Error writing %d regs at %d\n", num, reg);
|
||||
|
||||
return ret;
|
||||
|
||||
}
|
||||
|
||||
/* Read a block of upto 32 regs */
|
||||
int pcf50633_read_block(struct pcf50633 *pcf, u8 reg,
|
||||
int nr_regs, u8 *data)
|
||||
{
|
||||
int ret;
|
||||
|
||||
mutex_lock(&pcf->lock);
|
||||
ret = __pcf50633_read(pcf, reg, nr_regs, data);
|
||||
mutex_unlock(&pcf->lock);
|
||||
|
||||
return ret;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(pcf50633_read_block);
|
||||
|
||||
/* Write a block of upto 32 regs */
|
||||
int pcf50633_write_block(struct pcf50633 *pcf , u8 reg,
|
||||
int nr_regs, u8 *data)
|
||||
{
|
||||
int ret;
|
||||
|
||||
mutex_lock(&pcf->lock);
|
||||
ret = __pcf50633_write(pcf, reg, nr_regs, data);
|
||||
mutex_unlock(&pcf->lock);
|
||||
|
||||
return ret;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(pcf50633_write_block);
|
||||
|
||||
u8 pcf50633_reg_read(struct pcf50633 *pcf, u8 reg)
|
||||
{
|
||||
u8 val;
|
||||
|
||||
mutex_lock(&pcf->lock);
|
||||
__pcf50633_read(pcf, reg, 1, &val);
|
||||
mutex_unlock(&pcf->lock);
|
||||
|
||||
return val;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(pcf50633_reg_read);
|
||||
|
||||
int pcf50633_reg_write(struct pcf50633 *pcf, u8 reg, u8 val)
|
||||
{
|
||||
int ret;
|
||||
|
||||
mutex_lock(&pcf->lock);
|
||||
ret = __pcf50633_write(pcf, reg, 1, &val);
|
||||
mutex_unlock(&pcf->lock);
|
||||
|
||||
return ret;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(pcf50633_reg_write);
|
||||
|
||||
int pcf50633_reg_set_bit_mask(struct pcf50633 *pcf, u8 reg, u8 mask, u8 val)
|
||||
{
|
||||
int ret;
|
||||
u8 tmp;
|
||||
|
||||
val &= mask;
|
||||
|
||||
mutex_lock(&pcf->lock);
|
||||
ret = __pcf50633_read(pcf, reg, 1, &tmp);
|
||||
if (ret < 0)
|
||||
goto out;
|
||||
|
||||
tmp &= ~mask;
|
||||
tmp |= val;
|
||||
ret = __pcf50633_write(pcf, reg, 1, &tmp);
|
||||
|
||||
out:
|
||||
mutex_unlock(&pcf->lock);
|
||||
|
||||
return ret;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(pcf50633_reg_set_bit_mask);
|
||||
|
||||
int pcf50633_reg_clear_bits(struct pcf50633 *pcf, u8 reg, u8 val)
|
||||
{
|
||||
int ret;
|
||||
u8 tmp;
|
||||
|
||||
mutex_lock(&pcf->lock);
|
||||
ret = __pcf50633_read(pcf, reg, 1, &tmp);
|
||||
if (ret < 0)
|
||||
goto out;
|
||||
|
||||
tmp &= ~val;
|
||||
ret = __pcf50633_write(pcf, reg, 1, &tmp);
|
||||
|
||||
out:
|
||||
mutex_unlock(&pcf->lock);
|
||||
|
||||
return ret;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(pcf50633_reg_clear_bits);
|
||||
|
||||
/* sysfs attributes */
|
||||
static ssize_t show_dump_regs(struct device *dev, struct device_attribute *attr,
|
||||
char *buf)
|
||||
{
|
||||
struct pcf50633 *pcf = dev_get_drvdata(dev);
|
||||
u8 dump[16];
|
||||
int n, n1, idx = 0;
|
||||
char *buf1 = buf;
|
||||
static u8 address_no_read[] = { /* must be ascending */
|
||||
PCF50633_REG_INT1,
|
||||
PCF50633_REG_INT2,
|
||||
PCF50633_REG_INT3,
|
||||
PCF50633_REG_INT4,
|
||||
PCF50633_REG_INT5,
|
||||
0 /* terminator */
|
||||
};
|
||||
|
||||
for (n = 0; n < 256; n += sizeof(dump)) {
|
||||
for (n1 = 0; n1 < sizeof(dump); n1++)
|
||||
if (n == address_no_read[idx]) {
|
||||
idx++;
|
||||
dump[n1] = 0x00;
|
||||
} else
|
||||
dump[n1] = pcf50633_reg_read(pcf, n + n1);
|
||||
|
||||
hex_dump_to_buffer(dump, sizeof(dump), 16, 1, buf1, 128, 0);
|
||||
buf1 += strlen(buf1);
|
||||
*buf1++ = '\n';
|
||||
*buf1 = '\0';
|
||||
}
|
||||
|
||||
return buf1 - buf;
|
||||
}
|
||||
static DEVICE_ATTR(dump_regs, 0400, show_dump_regs, NULL);
|
||||
|
||||
static ssize_t show_resume_reason(struct device *dev,
|
||||
struct device_attribute *attr, char *buf)
|
||||
{
|
||||
struct pcf50633 *pcf = dev_get_drvdata(dev);
|
||||
int n;
|
||||
|
||||
n = sprintf(buf, "%02x%02x%02x%02x%02x\n",
|
||||
pcf->resume_reason[0],
|
||||
pcf->resume_reason[1],
|
||||
pcf->resume_reason[2],
|
||||
pcf->resume_reason[3],
|
||||
pcf->resume_reason[4]);
|
||||
|
||||
return n;
|
||||
}
|
||||
static DEVICE_ATTR(resume_reason, 0400, show_resume_reason, NULL);
|
||||
|
||||
static struct attribute *pcf_sysfs_entries[] = {
|
||||
&dev_attr_dump_regs.attr,
|
||||
&dev_attr_resume_reason.attr,
|
||||
NULL,
|
||||
};
|
||||
|
||||
static struct attribute_group pcf_attr_group = {
|
||||
.name = NULL, /* put in device directory */
|
||||
.attrs = pcf_sysfs_entries,
|
||||
};
|
||||
|
||||
int pcf50633_register_irq(struct pcf50633 *pcf, int irq,
|
||||
void (*handler) (int, void *), void *data)
|
||||
{
|
||||
if (irq < 0 || irq > PCF50633_NUM_IRQ || !handler)
|
||||
return -EINVAL;
|
||||
|
||||
if (WARN_ON(pcf->irq_handler[irq].handler))
|
||||
return -EBUSY;
|
||||
|
||||
mutex_lock(&pcf->lock);
|
||||
pcf->irq_handler[irq].handler = handler;
|
||||
pcf->irq_handler[irq].data = data;
|
||||
mutex_unlock(&pcf->lock);
|
||||
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(pcf50633_register_irq);
|
||||
|
||||
int pcf50633_free_irq(struct pcf50633 *pcf, int irq)
|
||||
{
|
||||
if (irq < 0 || irq > PCF50633_NUM_IRQ)
|
||||
return -EINVAL;
|
||||
|
||||
mutex_lock(&pcf->lock);
|
||||
pcf->irq_handler[irq].handler = NULL;
|
||||
mutex_unlock(&pcf->lock);
|
||||
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(pcf50633_free_irq);
|
||||
|
||||
static int __pcf50633_irq_mask_set(struct pcf50633 *pcf, int irq, u8 mask)
|
||||
{
|
||||
u8 reg, bits, tmp;
|
||||
int ret = 0, idx;
|
||||
|
||||
idx = irq >> 3;
|
||||
reg = PCF50633_REG_INT1M + idx;
|
||||
bits = 1 << (irq & 0x07);
|
||||
|
||||
mutex_lock(&pcf->lock);
|
||||
|
||||
if (mask) {
|
||||
ret = __pcf50633_read(pcf, reg, 1, &tmp);
|
||||
if (ret < 0)
|
||||
goto out;
|
||||
|
||||
tmp |= bits;
|
||||
|
||||
ret = __pcf50633_write(pcf, reg, 1, &tmp);
|
||||
if (ret < 0)
|
||||
goto out;
|
||||
|
||||
pcf->mask_regs[idx] &= ~bits;
|
||||
pcf->mask_regs[idx] |= bits;
|
||||
} else {
|
||||
ret = __pcf50633_read(pcf, reg, 1, &tmp);
|
||||
if (ret < 0)
|
||||
goto out;
|
||||
|
||||
tmp &= ~bits;
|
||||
|
||||
ret = __pcf50633_write(pcf, reg, 1, &tmp);
|
||||
if (ret < 0)
|
||||
goto out;
|
||||
|
||||
pcf->mask_regs[idx] &= ~bits;
|
||||
}
|
||||
out:
|
||||
mutex_unlock(&pcf->lock);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int pcf50633_irq_mask(struct pcf50633 *pcf, int irq)
|
||||
{
|
||||
dev_info(pcf->dev, "Masking IRQ %d\n", irq);
|
||||
|
||||
return __pcf50633_irq_mask_set(pcf, irq, 1);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(pcf50633_irq_mask);
|
||||
|
||||
int pcf50633_irq_unmask(struct pcf50633 *pcf, int irq)
|
||||
{
|
||||
dev_info(pcf->dev, "Unmasking IRQ %d\n", irq);
|
||||
|
||||
return __pcf50633_irq_mask_set(pcf, irq, 0);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(pcf50633_irq_unmask);
|
||||
|
||||
int pcf50633_irq_mask_get(struct pcf50633 *pcf, int irq)
|
||||
{
|
||||
u8 reg, bits;
|
||||
|
||||
reg = irq >> 3;
|
||||
bits = 1 << (irq & 0x07);
|
||||
|
||||
return pcf->mask_regs[reg] & bits;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(pcf50633_irq_mask_get);
|
||||
|
||||
static void pcf50633_irq_call_handler(struct pcf50633 *pcf, int irq)
|
||||
{
|
||||
if (pcf->irq_handler[irq].handler)
|
||||
pcf->irq_handler[irq].handler(irq, pcf->irq_handler[irq].data);
|
||||
}
|
||||
|
||||
/* Maximum amount of time ONKEY is held before emergency action is taken */
|
||||
#define PCF50633_ONKEY1S_TIMEOUT 8
|
||||
|
||||
static void pcf50633_irq_worker(struct work_struct *work)
|
||||
{
|
||||
struct pcf50633 *pcf;
|
||||
int ret, i, j;
|
||||
u8 pcf_int[5], chgstat;
|
||||
|
||||
pcf = container_of(work, struct pcf50633, irq_work);
|
||||
|
||||
/* Read the 5 INT regs in one transaction */
|
||||
ret = pcf50633_read_block(pcf, PCF50633_REG_INT1,
|
||||
ARRAY_SIZE(pcf_int), pcf_int);
|
||||
if (ret != ARRAY_SIZE(pcf_int)) {
|
||||
dev_err(pcf->dev, "Error reading INT registers\n");
|
||||
|
||||
/*
|
||||
* If this doesn't ACK the interrupt to the chip, we'll be
|
||||
* called once again as we're level triggered.
|
||||
*/
|
||||
goto out;
|
||||
}
|
||||
|
||||
/* We immediately read the usb and adapter status. We thus make sure
|
||||
* only of USBINS/USBREM IRQ handlers are called */
|
||||
if (pcf_int[0] & (PCF50633_INT1_USBINS | PCF50633_INT1_USBREM)) {
|
||||
chgstat = pcf50633_reg_read(pcf, PCF50633_REG_MBCS2);
|
||||
if (chgstat & (0x3 << 4))
|
||||
pcf_int[0] &= ~(1 << PCF50633_INT1_USBREM);
|
||||
else
|
||||
pcf_int[0] &= ~(1 << PCF50633_INT1_USBINS);
|
||||
}
|
||||
|
||||
/* Make sure only one of ADPINS or ADPREM is set */
|
||||
if (pcf_int[0] & (PCF50633_INT1_ADPINS | PCF50633_INT1_ADPREM)) {
|
||||
chgstat = pcf50633_reg_read(pcf, PCF50633_REG_MBCS2);
|
||||
if (chgstat & (0x3 << 4))
|
||||
pcf_int[0] &= ~(1 << PCF50633_INT1_ADPREM);
|
||||
else
|
||||
pcf_int[0] &= ~(1 << PCF50633_INT1_ADPINS);
|
||||
}
|
||||
|
||||
dev_dbg(pcf->dev, "INT1=0x%02x INT2=0x%02x INT3=0x%02x "
|
||||
"INT4=0x%02x INT5=0x%02x\n", pcf_int[0],
|
||||
pcf_int[1], pcf_int[2], pcf_int[3], pcf_int[4]);
|
||||
|
||||
/* Some revisions of the chip don't have a 8s standby mode on
|
||||
* ONKEY1S press. We try to manually do it in such cases. */
|
||||
if ((pcf_int[0] & PCF50633_INT1_SECOND) && pcf->onkey1s_held) {
|
||||
dev_info(pcf->dev, "ONKEY1S held for %d secs\n",
|
||||
pcf->onkey1s_held);
|
||||
if (pcf->onkey1s_held++ == PCF50633_ONKEY1S_TIMEOUT)
|
||||
if (pcf->pdata->force_shutdown)
|
||||
pcf->pdata->force_shutdown(pcf);
|
||||
}
|
||||
|
||||
if (pcf_int[2] & PCF50633_INT3_ONKEY1S) {
|
||||
dev_info(pcf->dev, "ONKEY1S held\n");
|
||||
pcf->onkey1s_held = 1 ;
|
||||
|
||||
/* Unmask IRQ_SECOND */
|
||||
pcf50633_reg_clear_bits(pcf, PCF50633_REG_INT1M,
|
||||
PCF50633_INT1_SECOND);
|
||||
|
||||
/* Unmask IRQ_ONKEYR */
|
||||
pcf50633_reg_clear_bits(pcf, PCF50633_REG_INT2M,
|
||||
PCF50633_INT2_ONKEYR);
|
||||
}
|
||||
|
||||
if ((pcf_int[1] & PCF50633_INT2_ONKEYR) && pcf->onkey1s_held) {
|
||||
pcf->onkey1s_held = 0;
|
||||
|
||||
/* Mask SECOND and ONKEYR interrupts */
|
||||
if (pcf->mask_regs[0] & PCF50633_INT1_SECOND)
|
||||
pcf50633_reg_set_bit_mask(pcf,
|
||||
PCF50633_REG_INT1M,
|
||||
PCF50633_INT1_SECOND,
|
||||
PCF50633_INT1_SECOND);
|
||||
|
||||
if (pcf->mask_regs[1] & PCF50633_INT2_ONKEYR)
|
||||
pcf50633_reg_set_bit_mask(pcf,
|
||||
PCF50633_REG_INT2M,
|
||||
PCF50633_INT2_ONKEYR,
|
||||
PCF50633_INT2_ONKEYR);
|
||||
}
|
||||
|
||||
/* Have we just resumed ? */
|
||||
if (pcf->is_suspended) {
|
||||
pcf->is_suspended = 0;
|
||||
|
||||
/* Set the resume reason filtering out non resumers */
|
||||
for (i = 0; i < ARRAY_SIZE(pcf_int); i++)
|
||||
pcf->resume_reason[i] = pcf_int[i] &
|
||||
pcf->pdata->resumers[i];
|
||||
|
||||
/* Make sure we don't pass on any ONKEY events to
|
||||
* userspace now */
|
||||
pcf_int[1] &= ~(PCF50633_INT2_ONKEYR | PCF50633_INT2_ONKEYF);
|
||||
}
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(pcf_int); i++) {
|
||||
/* Unset masked interrupts */
|
||||
pcf_int[i] &= ~pcf->mask_regs[i];
|
||||
|
||||
for (j = 0; j < 8 ; j++)
|
||||
if (pcf_int[i] & (1 << j))
|
||||
pcf50633_irq_call_handler(pcf, (i * 8) + j);
|
||||
}
|
||||
|
||||
out:
|
||||
put_device(pcf->dev);
|
||||
enable_irq(pcf->irq);
|
||||
}
|
||||
|
||||
static irqreturn_t pcf50633_irq(int irq, void *data)
|
||||
{
|
||||
struct pcf50633 *pcf = data;
|
||||
|
||||
dev_dbg(pcf->dev, "pcf50633_irq\n");
|
||||
|
||||
get_device(pcf->dev);
|
||||
disable_irq(pcf->irq);
|
||||
schedule_work(&pcf->irq_work);
|
||||
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static void
|
||||
pcf50633_client_dev_register(struct pcf50633 *pcf, const char *name,
|
||||
struct platform_device **pdev)
|
||||
{
|
||||
struct pcf50633_subdev_pdata *subdev_pdata;
|
||||
int ret;
|
||||
|
||||
*pdev = platform_device_alloc(name, -1);
|
||||
if (!*pdev) {
|
||||
dev_err(pcf->dev, "Falied to allocate %s\n", name);
|
||||
return;
|
||||
}
|
||||
|
||||
subdev_pdata = kmalloc(sizeof(*subdev_pdata), GFP_KERNEL);
|
||||
if (!subdev_pdata) {
|
||||
dev_err(pcf->dev, "Error allocating subdev pdata\n");
|
||||
platform_device_put(*pdev);
|
||||
}
|
||||
|
||||
subdev_pdata->pcf = pcf;
|
||||
platform_device_add_data(*pdev, subdev_pdata, sizeof(*subdev_pdata));
|
||||
|
||||
(*pdev)->dev.parent = pcf->dev;
|
||||
|
||||
ret = platform_device_add(*pdev);
|
||||
if (ret) {
|
||||
dev_err(pcf->dev, "Failed to register %s: %d\n", name, ret);
|
||||
platform_device_put(*pdev);
|
||||
*pdev = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
#ifdef CONFIG_PM
|
||||
static int pcf50633_suspend(struct device *dev, pm_message_t state)
|
||||
{
|
||||
struct pcf50633 *pcf;
|
||||
int ret = 0, i;
|
||||
u8 res[5];
|
||||
|
||||
pcf = dev_get_drvdata(dev);
|
||||
|
||||
/* Make sure our interrupt handlers are not called
|
||||
* henceforth */
|
||||
disable_irq(pcf->irq);
|
||||
|
||||
/* Make sure that any running IRQ worker has quit */
|
||||
cancel_work_sync(&pcf->irq_work);
|
||||
|
||||
/* Save the masks */
|
||||
ret = pcf50633_read_block(pcf, PCF50633_REG_INT1M,
|
||||
ARRAY_SIZE(pcf->suspend_irq_masks),
|
||||
pcf->suspend_irq_masks);
|
||||
if (ret < 0) {
|
||||
dev_err(pcf->dev, "error saving irq masks\n");
|
||||
goto out;
|
||||
}
|
||||
|
||||
/* Write wakeup irq masks */
|
||||
for (i = 0; i < ARRAY_SIZE(res); i++)
|
||||
res[i] = ~pcf->pdata->resumers[i];
|
||||
|
||||
ret = pcf50633_write_block(pcf, PCF50633_REG_INT1M,
|
||||
ARRAY_SIZE(res), &res[0]);
|
||||
if (ret < 0) {
|
||||
dev_err(pcf->dev, "error writing wakeup irq masks\n");
|
||||
goto out;
|
||||
}
|
||||
|
||||
pcf->is_suspended = 1;
|
||||
|
||||
out:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int pcf50633_resume(struct device *dev)
|
||||
{
|
||||
struct pcf50633 *pcf;
|
||||
int ret;
|
||||
|
||||
pcf = dev_get_drvdata(dev);
|
||||
|
||||
/* Write the saved mask registers */
|
||||
ret = pcf50633_write_block(pcf, PCF50633_REG_INT1M,
|
||||
ARRAY_SIZE(pcf->suspend_irq_masks),
|
||||
pcf->suspend_irq_masks);
|
||||
if (ret < 0)
|
||||
dev_err(pcf->dev, "Error restoring saved suspend masks\n");
|
||||
|
||||
/* Restore regulators' state */
|
||||
|
||||
|
||||
get_device(pcf->dev);
|
||||
|
||||
/*
|
||||
* Clear any pending interrupts and set resume reason if any.
|
||||
* This will leave with enable_irq()
|
||||
*/
|
||||
pcf50633_irq_worker(&pcf->irq_work);
|
||||
|
||||
return 0;
|
||||
}
|
||||
#else
|
||||
#define pcf50633_suspend NULL
|
||||
#define pcf50633_resume NULL
|
||||
#endif
|
||||
|
||||
static int __devinit pcf50633_probe(struct i2c_client *client,
|
||||
const struct i2c_device_id *ids)
|
||||
{
|
||||
struct pcf50633 *pcf;
|
||||
struct pcf50633_platform_data *pdata = client->dev.platform_data;
|
||||
int i, ret = 0;
|
||||
int version, variant;
|
||||
|
||||
pcf = kzalloc(sizeof(*pcf), GFP_KERNEL);
|
||||
if (!pcf)
|
||||
return -ENOMEM;
|
||||
|
||||
pcf->pdata = pdata;
|
||||
|
||||
mutex_init(&pcf->lock);
|
||||
|
||||
i2c_set_clientdata(client, pcf);
|
||||
pcf->dev = &client->dev;
|
||||
pcf->i2c_client = client;
|
||||
pcf->irq = client->irq;
|
||||
|
||||
INIT_WORK(&pcf->irq_work, pcf50633_irq_worker);
|
||||
|
||||
version = pcf50633_reg_read(pcf, 0);
|
||||
variant = pcf50633_reg_read(pcf, 1);
|
||||
if (version < 0 || variant < 0) {
|
||||
dev_err(pcf->dev, "Unable to probe pcf50633\n");
|
||||
ret = -ENODEV;
|
||||
goto err;
|
||||
}
|
||||
|
||||
dev_info(pcf->dev, "Probed device version %d variant %d\n",
|
||||
version, variant);
|
||||
|
||||
/* Enable all interrupts except RTC SECOND */
|
||||
pcf->mask_regs[0] = 0x80;
|
||||
pcf50633_reg_write(pcf, PCF50633_REG_INT1M, pcf->mask_regs[0]);
|
||||
pcf50633_reg_write(pcf, PCF50633_REG_INT2M, 0x00);
|
||||
pcf50633_reg_write(pcf, PCF50633_REG_INT3M, 0x00);
|
||||
pcf50633_reg_write(pcf, PCF50633_REG_INT4M, 0x00);
|
||||
pcf50633_reg_write(pcf, PCF50633_REG_INT5M, 0x00);
|
||||
|
||||
/* Create sub devices */
|
||||
pcf50633_client_dev_register(pcf, "pcf50633-input",
|
||||
&pcf->input_pdev);
|
||||
pcf50633_client_dev_register(pcf, "pcf50633-rtc",
|
||||
&pcf->rtc_pdev);
|
||||
pcf50633_client_dev_register(pcf, "pcf50633-mbc",
|
||||
&pcf->mbc_pdev);
|
||||
pcf50633_client_dev_register(pcf, "pcf50633-adc",
|
||||
&pcf->adc_pdev);
|
||||
|
||||
for (i = 0; i < PCF50633_NUM_REGULATORS; i++) {
|
||||
struct platform_device *pdev;
|
||||
|
||||
pdev = platform_device_alloc("pcf50633-regltr", i);
|
||||
if (!pdev) {
|
||||
dev_err(pcf->dev, "Cannot create regulator\n");
|
||||
continue;
|
||||
}
|
||||
|
||||
pdev->dev.parent = pcf->dev;
|
||||
pdev->dev.platform_data = &pdata->reg_init_data[i];
|
||||
pdev->dev.driver_data = pcf;
|
||||
pcf->regulator_pdev[i] = pdev;
|
||||
|
||||
platform_device_add(pdev);
|
||||
}
|
||||
|
||||
if (client->irq) {
|
||||
set_irq_handler(client->irq, handle_level_irq);
|
||||
ret = request_irq(client->irq, pcf50633_irq,
|
||||
IRQF_TRIGGER_LOW, "pcf50633", pcf);
|
||||
|
||||
if (ret) {
|
||||
dev_err(pcf->dev, "Failed to request IRQ %d\n", ret);
|
||||
goto err;
|
||||
}
|
||||
} else {
|
||||
dev_err(pcf->dev, "No IRQ configured\n");
|
||||
goto err;
|
||||
}
|
||||
|
||||
if (enable_irq_wake(client->irq) < 0)
|
||||
dev_err(pcf->dev, "IRQ %u cannot be enabled as wake-up source"
|
||||
"in this hardware revision", client->irq);
|
||||
|
||||
ret = sysfs_create_group(&client->dev.kobj, &pcf_attr_group);
|
||||
if (ret)
|
||||
dev_err(pcf->dev, "error creating sysfs entries\n");
|
||||
|
||||
if (pdata->probe_done)
|
||||
pdata->probe_done(pcf);
|
||||
|
||||
return 0;
|
||||
|
||||
err:
|
||||
kfree(pcf);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int __devexit pcf50633_remove(struct i2c_client *client)
|
||||
{
|
||||
struct pcf50633 *pcf = i2c_get_clientdata(client);
|
||||
int i;
|
||||
|
||||
free_irq(pcf->irq, pcf);
|
||||
|
||||
platform_device_unregister(pcf->input_pdev);
|
||||
platform_device_unregister(pcf->rtc_pdev);
|
||||
platform_device_unregister(pcf->mbc_pdev);
|
||||
platform_device_unregister(pcf->adc_pdev);
|
||||
|
||||
for (i = 0; i < PCF50633_NUM_REGULATORS; i++)
|
||||
platform_device_unregister(pcf->regulator_pdev[i]);
|
||||
|
||||
kfree(pcf);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct i2c_device_id pcf50633_id_table[] = {
|
||||
{"pcf50633", 0x73},
|
||||
};
|
||||
|
||||
static struct i2c_driver pcf50633_driver = {
|
||||
.driver = {
|
||||
.name = "pcf50633",
|
||||
.suspend = pcf50633_suspend,
|
||||
.resume = pcf50633_resume,
|
||||
},
|
||||
.id_table = pcf50633_id_table,
|
||||
.probe = pcf50633_probe,
|
||||
.remove = __devexit_p(pcf50633_remove),
|
||||
};
|
||||
|
||||
static int __init pcf50633_init(void)
|
||||
{
|
||||
return i2c_add_driver(&pcf50633_driver);
|
||||
}
|
||||
|
||||
static void __exit pcf50633_exit(void)
|
||||
{
|
||||
i2c_del_driver(&pcf50633_driver);
|
||||
}
|
||||
|
||||
MODULE_DESCRIPTION("I2C chip driver for NXP PCF50633 PMU");
|
||||
MODULE_AUTHOR("Harald Welte <laforge@openmoko.org>");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
||||
module_init(pcf50633_init);
|
||||
module_exit(pcf50633_exit);
|
||||
|
|
@ -0,0 +1,218 @@
|
|||
/*
|
||||
* core.h -- Core driver for NXP PCF50633
|
||||
*
|
||||
* (C) 2006-2008 by Openmoko, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#ifndef __LINUX_MFD_PCF50633_CORE_H
|
||||
#define __LINUX_MFD_PCF50633_CORE_H
|
||||
|
||||
#include <linux/i2c.h>
|
||||
#include <linux/workqueue.h>
|
||||
#include <linux/regulator/driver.h>
|
||||
#include <linux/regulator/machine.h>
|
||||
#include <linux/power_supply.h>
|
||||
|
||||
struct pcf50633;
|
||||
|
||||
#define PCF50633_NUM_REGULATORS 11
|
||||
|
||||
struct pcf50633_platform_data {
|
||||
struct regulator_init_data reg_init_data[PCF50633_NUM_REGULATORS];
|
||||
|
||||
char **batteries;
|
||||
int num_batteries;
|
||||
|
||||
/* Callbacks */
|
||||
void (*probe_done)(struct pcf50633 *);
|
||||
void (*mbc_event_callback)(struct pcf50633 *, int);
|
||||
void (*regulator_registered)(struct pcf50633 *, int);
|
||||
void (*force_shutdown)(struct pcf50633 *);
|
||||
|
||||
u8 resumers[5];
|
||||
};
|
||||
|
||||
struct pcf50633_subdev_pdata {
|
||||
struct pcf50633 *pcf;
|
||||
};
|
||||
|
||||
struct pcf50633_irq {
|
||||
void (*handler) (int, void *);
|
||||
void *data;
|
||||
};
|
||||
|
||||
int pcf50633_register_irq(struct pcf50633 *pcf, int irq,
|
||||
void (*handler) (int, void *), void *data);
|
||||
int pcf50633_free_irq(struct pcf50633 *pcf, int irq);
|
||||
|
||||
int pcf50633_irq_mask(struct pcf50633 *pcf, int irq);
|
||||
int pcf50633_irq_unmask(struct pcf50633 *pcf, int irq);
|
||||
int pcf50633_irq_mask_get(struct pcf50633 *pcf, int irq);
|
||||
|
||||
int pcf50633_read_block(struct pcf50633 *, u8 reg,
|
||||
int nr_regs, u8 *data);
|
||||
int pcf50633_write_block(struct pcf50633 *pcf, u8 reg,
|
||||
int nr_regs, u8 *data);
|
||||
u8 pcf50633_reg_read(struct pcf50633 *, u8 reg);
|
||||
int pcf50633_reg_write(struct pcf50633 *pcf, u8 reg, u8 val);
|
||||
|
||||
int pcf50633_reg_set_bit_mask(struct pcf50633 *pcf, u8 reg, u8 mask, u8 val);
|
||||
int pcf50633_reg_clear_bits(struct pcf50633 *pcf, u8 reg, u8 bits);
|
||||
|
||||
/* Interrupt registers */
|
||||
|
||||
#define PCF50633_REG_INT1 0x02
|
||||
#define PCF50633_REG_INT2 0x03
|
||||
#define PCF50633_REG_INT3 0x04
|
||||
#define PCF50633_REG_INT4 0x05
|
||||
#define PCF50633_REG_INT5 0x06
|
||||
|
||||
#define PCF50633_REG_INT1M 0x07
|
||||
#define PCF50633_REG_INT2M 0x08
|
||||
#define PCF50633_REG_INT3M 0x09
|
||||
#define PCF50633_REG_INT4M 0x0a
|
||||
#define PCF50633_REG_INT5M 0x0b
|
||||
|
||||
enum {
|
||||
/* Chip IRQs */
|
||||
PCF50633_IRQ_ADPINS,
|
||||
PCF50633_IRQ_ADPREM,
|
||||
PCF50633_IRQ_USBINS,
|
||||
PCF50633_IRQ_USBREM,
|
||||
PCF50633_IRQ_RESERVED1,
|
||||
PCF50633_IRQ_RESERVED2,
|
||||
PCF50633_IRQ_ALARM,
|
||||
PCF50633_IRQ_SECOND,
|
||||
PCF50633_IRQ_ONKEYR,
|
||||
PCF50633_IRQ_ONKEYF,
|
||||
PCF50633_IRQ_EXTON1R,
|
||||
PCF50633_IRQ_EXTON1F,
|
||||
PCF50633_IRQ_EXTON2R,
|
||||
PCF50633_IRQ_EXTON2F,
|
||||
PCF50633_IRQ_EXTON3R,
|
||||
PCF50633_IRQ_EXTON3F,
|
||||
PCF50633_IRQ_BATFULL,
|
||||
PCF50633_IRQ_CHGHALT,
|
||||
PCF50633_IRQ_THLIMON,
|
||||
PCF50633_IRQ_THLIMOFF,
|
||||
PCF50633_IRQ_USBLIMON,
|
||||
PCF50633_IRQ_USBLIMOFF,
|
||||
PCF50633_IRQ_ADCRDY,
|
||||
PCF50633_IRQ_ONKEY1S,
|
||||
PCF50633_IRQ_LOWSYS,
|
||||
PCF50633_IRQ_LOWBAT,
|
||||
PCF50633_IRQ_HIGHTMP,
|
||||
PCF50633_IRQ_AUTOPWRFAIL,
|
||||
PCF50633_IRQ_DWN1PWRFAIL,
|
||||
PCF50633_IRQ_DWN2PWRFAIL,
|
||||
PCF50633_IRQ_LEDPWRFAIL,
|
||||
PCF50633_IRQ_LEDOVP,
|
||||
PCF50633_IRQ_LDO1PWRFAIL,
|
||||
PCF50633_IRQ_LDO2PWRFAIL,
|
||||
PCF50633_IRQ_LDO3PWRFAIL,
|
||||
PCF50633_IRQ_LDO4PWRFAIL,
|
||||
PCF50633_IRQ_LDO5PWRFAIL,
|
||||
PCF50633_IRQ_LDO6PWRFAIL,
|
||||
PCF50633_IRQ_HCLDOPWRFAIL,
|
||||
PCF50633_IRQ_HCLDOOVL,
|
||||
|
||||
/* Always last */
|
||||
PCF50633_NUM_IRQ,
|
||||
};
|
||||
|
||||
struct pcf50633 {
|
||||
struct device *dev;
|
||||
struct i2c_client *i2c_client;
|
||||
|
||||
struct pcf50633_platform_data *pdata;
|
||||
int irq;
|
||||
struct pcf50633_irq irq_handler[PCF50633_NUM_IRQ];
|
||||
struct work_struct irq_work;
|
||||
struct mutex lock;
|
||||
|
||||
u8 mask_regs[5];
|
||||
|
||||
u8 suspend_irq_masks[5];
|
||||
u8 resume_reason[5];
|
||||
int is_suspended;
|
||||
|
||||
int onkey1s_held;
|
||||
|
||||
struct platform_device *rtc_pdev;
|
||||
struct platform_device *mbc_pdev;
|
||||
struct platform_device *adc_pdev;
|
||||
struct platform_device *input_pdev;
|
||||
struct platform_device *regulator_pdev[PCF50633_NUM_REGULATORS];
|
||||
};
|
||||
|
||||
enum pcf50633_reg_int1 {
|
||||
PCF50633_INT1_ADPINS = 0x01, /* Adapter inserted */
|
||||
PCF50633_INT1_ADPREM = 0x02, /* Adapter removed */
|
||||
PCF50633_INT1_USBINS = 0x04, /* USB inserted */
|
||||
PCF50633_INT1_USBREM = 0x08, /* USB removed */
|
||||
/* reserved */
|
||||
PCF50633_INT1_ALARM = 0x40, /* RTC alarm time is reached */
|
||||
PCF50633_INT1_SECOND = 0x80, /* RTC periodic second interrupt */
|
||||
};
|
||||
|
||||
enum pcf50633_reg_int2 {
|
||||
PCF50633_INT2_ONKEYR = 0x01, /* ONKEY rising edge */
|
||||
PCF50633_INT2_ONKEYF = 0x02, /* ONKEY falling edge */
|
||||
PCF50633_INT2_EXTON1R = 0x04, /* EXTON1 rising edge */
|
||||
PCF50633_INT2_EXTON1F = 0x08, /* EXTON1 falling edge */
|
||||
PCF50633_INT2_EXTON2R = 0x10, /* EXTON2 rising edge */
|
||||
PCF50633_INT2_EXTON2F = 0x20, /* EXTON2 falling edge */
|
||||
PCF50633_INT2_EXTON3R = 0x40, /* EXTON3 rising edge */
|
||||
PCF50633_INT2_EXTON3F = 0x80, /* EXTON3 falling edge */
|
||||
};
|
||||
|
||||
enum pcf50633_reg_int3 {
|
||||
PCF50633_INT3_BATFULL = 0x01, /* Battery full */
|
||||
PCF50633_INT3_CHGHALT = 0x02, /* Charger halt */
|
||||
PCF50633_INT3_THLIMON = 0x04,
|
||||
PCF50633_INT3_THLIMOFF = 0x08,
|
||||
PCF50633_INT3_USBLIMON = 0x10,
|
||||
PCF50633_INT3_USBLIMOFF = 0x20,
|
||||
PCF50633_INT3_ADCRDY = 0x40, /* ADC result ready */
|
||||
PCF50633_INT3_ONKEY1S = 0x80, /* ONKEY pressed 1 second */
|
||||
};
|
||||
|
||||
enum pcf50633_reg_int4 {
|
||||
PCF50633_INT4_LOWSYS = 0x01,
|
||||
PCF50633_INT4_LOWBAT = 0x02,
|
||||
PCF50633_INT4_HIGHTMP = 0x04,
|
||||
PCF50633_INT4_AUTOPWRFAIL = 0x08,
|
||||
PCF50633_INT4_DWN1PWRFAIL = 0x10,
|
||||
PCF50633_INT4_DWN2PWRFAIL = 0x20,
|
||||
PCF50633_INT4_LEDPWRFAIL = 0x40,
|
||||
PCF50633_INT4_LEDOVP = 0x80,
|
||||
};
|
||||
|
||||
enum pcf50633_reg_int5 {
|
||||
PCF50633_INT5_LDO1PWRFAIL = 0x01,
|
||||
PCF50633_INT5_LDO2PWRFAIL = 0x02,
|
||||
PCF50633_INT5_LDO3PWRFAIL = 0x04,
|
||||
PCF50633_INT5_LDO4PWRFAIL = 0x08,
|
||||
PCF50633_INT5_LDO5PWRFAIL = 0x10,
|
||||
PCF50633_INT5_LDO6PWRFAIL = 0x20,
|
||||
PCF50633_INT5_HCLDOPWRFAIL = 0x40,
|
||||
PCF50633_INT5_HCLDOOVL = 0x80,
|
||||
};
|
||||
|
||||
/* misc. registers */
|
||||
#define PCF50633_REG_OOCSHDWN 0x0c
|
||||
|
||||
/* LED registers */
|
||||
#define PCF50633_REG_LEDOUT 0x28
|
||||
#define PCF50633_REG_LEDENA 0x29
|
||||
#define PCF50633_REG_LEDCTL 0x2a
|
||||
#define PCF50633_REG_LEDDIM 0x2b
|
||||
|
||||
#endif
|
||||
|
||||
Загрузка…
Ссылка в новой задаче