Commit f72de663 authored by Eric Miao's avatar Eric Miao Committed by Russell King
Browse files

[ARM] pxa/akita: use pca953x instead of akita-ioexp



Use generic pca953x which provides gpiolib interface instead of
akita-specific akita-ioexp with non-standard interface to pins.
Signed-off-by: default avatarDmitry Baryshkov <dbaryshkov@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: default avatarEric Miao <eric.miao@marvell.com>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 4fe3224f
......@@ -30,7 +30,6 @@ obj-$(CONFIG_MACH_TRIZEPS4) += trizeps4.o
obj-$(CONFIG_MACH_COLIBRI) += colibri.o
obj-$(CONFIG_PXA_SHARP_C7xx) += corgi.o sharpsl_pm.o corgi_pm.o
obj-$(CONFIG_PXA_SHARP_Cxx00) += spitz.o sharpsl_pm.o spitz_pm.o
obj-$(CONFIG_MACH_AKITA) += akita-ioexp.o
obj-$(CONFIG_MACH_POODLE) += poodle.o
obj-$(CONFIG_MACH_PCM027) += pcm027.o
obj-$(CONFIG_MACH_PCM990_BASEBOARD) += pcm990-baseboard.o
......
/*
* Support for the Extra GPIOs on the Sharp SL-C1000 (Akita)
* (uses a Maxim MAX7310 8 Port IO Expander)
*
* Copyright 2005 Openedhand Ltd.
*
* Author: Richard Purdie <richard@openedhand.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/workqueue.h>
#include <mach/akita.h>
/* MAX7310 Regiser Map */
#define MAX7310_INPUT 0x00
#define MAX7310_OUTPUT 0x01
#define MAX7310_POLINV 0x02
#define MAX7310_IODIR 0x03 /* 1 = Input, 0 = Output */
#define MAX7310_TIMEOUT 0x04
/* Addresses to scan */
static const unsigned short normal_i2c[] = { 0x18, I2C_CLIENT_END };
/* I2C Magic */
I2C_CLIENT_INSMOD;
static int max7310_write(struct i2c_client *client, int address, int data);
static struct i2c_client max7310_template;
static void akita_ioexp_work(struct work_struct *private_);
static struct device *akita_ioexp_device;
static unsigned char ioexp_output_value = AKITA_IOEXP_IO_OUT;
DECLARE_WORK(akita_ioexp, akita_ioexp_work);
/*
* MAX7310 Access
*/
static int max7310_config(struct device *dev, int iomode, int polarity)
{
int ret;
struct i2c_client *client = to_i2c_client(dev);
ret = max7310_write(client, MAX7310_POLINV, polarity);
if (ret < 0)
return ret;
ret = max7310_write(client, MAX7310_IODIR, iomode);
return ret;
}
static int max7310_set_ouputs(struct device *dev, int outputs)
{
struct i2c_client *client = to_i2c_client(dev);
return max7310_write(client, MAX7310_OUTPUT, outputs);
}
/*
* I2C Functions
*/
static int max7310_write(struct i2c_client *client, int address, int value)
{
u8 data[2];
data[0] = address & 0xff;
data[1] = value & 0xff;
if (i2c_master_send(client, data, 2) == 2)
return 0;
return -1;
}
static int max7310_detect(struct i2c_adapter *adapter, int address, int kind)
{
struct i2c_client *new_client;
int err;
if (!(new_client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL)))
return -ENOMEM;
max7310_template.adapter = adapter;
max7310_template.addr = address;
memcpy(new_client, &max7310_template, sizeof(struct i2c_client));
if ((err = i2c_attach_client(new_client))) {
kfree(new_client);
return err;
}
max7310_config(&new_client->dev, AKITA_IOEXP_IO_DIR, 0);
akita_ioexp_device = &new_client->dev;
schedule_work(&akita_ioexp);
return 0;
}
static int max7310_attach_adapter(struct i2c_adapter *adapter)
{
return i2c_probe(adapter, &addr_data, max7310_detect);
}
static int max7310_detach_client(struct i2c_client *client)
{
int err;
akita_ioexp_device = NULL;
if ((err = i2c_detach_client(client)))
return err;
kfree(client);
return 0;
}
static struct i2c_driver max7310_i2c_driver = {
.driver = {
.name = "akita-max7310",
},
.id = I2C_DRIVERID_AKITAIOEXP,
.attach_adapter = max7310_attach_adapter,
.detach_client = max7310_detach_client,
};
static struct i2c_client max7310_template = {
name: "akita-max7310",
driver: &max7310_i2c_driver,
};
void akita_set_ioexp(struct device *dev, unsigned char bit)
{
ioexp_output_value |= bit;
if (akita_ioexp_device)
schedule_work(&akita_ioexp);
return;
}
void akita_reset_ioexp(struct device *dev, unsigned char bit)
{
ioexp_output_value &= ~bit;
if (akita_ioexp_device)
schedule_work(&akita_ioexp);
return;
}
EXPORT_SYMBOL(akita_set_ioexp);
EXPORT_SYMBOL(akita_reset_ioexp);
static void akita_ioexp_work(struct work_struct *private_)
{
if (akita_ioexp_device)
max7310_set_ouputs(akita_ioexp_device, ioexp_output_value);
}
#ifdef CONFIG_PM
static int akita_ioexp_suspend(struct platform_device *pdev, pm_message_t state)
{
flush_scheduled_work();
return 0;
}
static int akita_ioexp_resume(struct platform_device *pdev)
{
schedule_work(&akita_ioexp);
return 0;
}
#else
#define akita_ioexp_suspend NULL
#define akita_ioexp_resume NULL
#endif
static int __init akita_ioexp_probe(struct platform_device *pdev)
{
return i2c_add_driver(&max7310_i2c_driver);
}
static int akita_ioexp_remove(struct platform_device *pdev)
{
i2c_del_driver(&max7310_i2c_driver);
return 0;
}
static struct platform_driver akita_ioexp_driver = {
.probe = akita_ioexp_probe,
.remove = akita_ioexp_remove,
.suspend = akita_ioexp_suspend,
.resume = akita_ioexp_resume,
.driver = {
.name = "akita-ioexp",
},
};
static int __init akita_ioexp_init(void)
{
return platform_driver_register(&akita_ioexp_driver);
}
static void __exit akita_ioexp_exit(void)
{
platform_driver_unregister(&akita_ioexp_driver);
}
MODULE_AUTHOR("Richard Purdie <rpurdie@openedhand.com>");
MODULE_DESCRIPTION("Akita IO-Expander driver");
MODULE_LICENSE("GPL");
fs_initcall(akita_ioexp_init);
module_exit(akita_ioexp_exit);
/*
* Hardware specific definitions for SL-C1000 (Akita)
*
* Copyright (c) 2005 Richard Purdie
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
/* Akita IO Expander GPIOs */
#define AKITA_IOEXP_RESERVED_7 (1 << 7)
#define AKITA_IOEXP_IR_ON (1 << 6)
#define AKITA_IOEXP_AKIN_PULLUP (1 << 5)
#define AKITA_IOEXP_BACKLIGHT_CONT (1 << 4)
#define AKITA_IOEXP_BACKLIGHT_ON (1 << 3)
#define AKITA_IOEXP_MIC_BIAS (1 << 2)
#define AKITA_IOEXP_RESERVED_1 (1 << 1)
#define AKITA_IOEXP_RESERVED_0 (1 << 0)
/* Direction Bitfield 0=output 1=input */
#define AKITA_IOEXP_IO_DIR 0
/* Default Values */
#define AKITA_IOEXP_IO_OUT (AKITA_IOEXP_IR_ON | AKITA_IOEXP_AKIN_PULLUP)
extern struct platform_device akitaioexp_device;
void akita_set_ioexp(struct device *dev, unsigned char bitmask);
void akita_reset_ioexp(struct device *dev, unsigned char bitmask);
......@@ -151,6 +151,17 @@
#define SPITZ_GPIO_BACKLIGHT_ON (SPITZ_SCP2_GPIO_BASE + 7)
#define SPITZ_GPIO_MIC_BIAS (SPITZ_SCP2_GPIO_BASE + 8)
/* Akita IO Expander GPIOs */
#define AKITA_IOEXP_GPIO_BASE (NR_BUILTIN_GPIO + 12)
#define AKITA_GPIO_RESERVED_0 (AKITA_IOEXP_GPIO_BASE + 0)
#define AKITA_GPIO_RESERVED_1 (AKITA_IOEXP_GPIO_BASE + 1)
#define AKITA_GPIO_MIC_BIAS (AKITA_IOEXP_GPIO_BASE + 2)
#define AKITA_GPIO_BACKLIGHT_ON (AKITA_IOEXP_GPIO_BASE + 3)
#define AKITA_GPIO_BACKLIGHT_CONT (AKITA_IOEXP_GPIO_BASE + 4)
#define AKITA_GPIO_AKIN_PULLUP (AKITA_IOEXP_GPIO_BASE + 5)
#define AKITA_GPIO_IR_ON (AKITA_IOEXP_GPIO_BASE + 6)
#define AKITA_GPIO_RESERVED_7 (AKITA_IOEXP_GPIO_BASE + 7)
/* Spitz IRQ Definitions */
#define SPITZ_IRQ_GPIO_KEY_INT IRQ_GPIO(SPITZ_GPIO_KEY_INT)
......
......@@ -24,6 +24,8 @@
#include <linux/mmc/host.h>
#include <linux/pm.h>
#include <linux/backlight.h>
#include <linux/i2c.h>
#include <linux/i2c/pca953x.h>
#include <linux/spi/spi.h>
#include <linux/spi/ads7846.h>
#include <linux/spi/corgi_lcd.h>
......@@ -52,7 +54,6 @@
#include <mach/udc.h>
#include <mach/pxafb.h>
#include <mach/pxa2xx_spi.h>
#include <mach/akita.h>
#include <mach/spitz.h>
#include <mach/sharpsl.h>
......@@ -313,16 +314,8 @@ static void spitz_notify_intensity(int intensity)
}
if (machine_is_akita()) {
/* Bit 5 is via IO-Expander */
if (intensity & 0x0020)
akita_reset_ioexp(&akitaioexp_device.dev, AKITA_IOEXP_BACKLIGHT_CONT);
else
akita_set_ioexp(&akitaioexp_device.dev, AKITA_IOEXP_BACKLIGHT_CONT);
if (intensity)
akita_set_ioexp(&akitaioexp_device.dev, AKITA_IOEXP_BACKLIGHT_ON);
else
akita_reset_ioexp(&akitaioexp_device.dev, AKITA_IOEXP_BACKLIGHT_ON);
gpio_set_value(AKITA_GPIO_BACKLIGHT_CONT, !(intensity & 0x20));
gpio_set_value(AKITA_GPIO_BACKLIGHT_ON, intensity);
return;
}
}
......@@ -565,10 +558,7 @@ static void spitz_irda_transceiver_mode(struct device *dev, int mode)
#ifdef CONFIG_MACH_AKITA
static void akita_irda_transceiver_mode(struct device *dev, int mode)
{
if (mode & IR_OFF)
akita_set_ioexp(&akitaioexp_device.dev, AKITA_IOEXP_IR_ON);
else
akita_reset_ioexp(&akitaioexp_device.dev, AKITA_IOEXP_IR_ON);
gpio_set_value(AKITA_GPIO_IR_ON, mode & IR_OFF);
pxa2xx_transceiver_mode(dev, mode);
}
#endif
......@@ -679,12 +669,17 @@ static void __init spitz_init(void)
/*
* Akita IO Expander
*/
struct platform_device akitaioexp_device = {
.name = "akita-ioexp",
.id = -1,
static struct pca953x_platform_data akita_ioexp = {
.gpio_base = AKITA_IOEXP_GPIO_BASE,
};
EXPORT_SYMBOL_GPL(akitaioexp_device);
static struct i2c_board_info akita_i2c_board_info[] = {
{
.type = "max7310",
.addr = 0x18,
.platform_data = &akita_ioexp,
},
};
static void __init akita_init(void)
{
......@@ -694,9 +689,9 @@ static void __init akita_init(void)
spitz_pcmcia_config.num_devs = 1;
platform_scoop_config = &spitz_pcmcia_config;
platform_device_register(&akitaioexp_device);
pxa_set_i2c_info(NULL);
i2c_register_board_info(0, ARRAY_AND_SIZE(akita_i2c_board_info));
spitzscoop_device.dev.parent = &akitaioexp_device.dev;
common_init();
}
#endif
......
......@@ -28,7 +28,6 @@
#include <asm/mach-types.h>
#include <mach/pxa-regs.h>
#include <mach/hardware.h>
#include <mach/akita.h>
#include <mach/spitz.h>
#include "../codecs/wm8750.h"
#include "pxa2xx-pcm.h"
......@@ -219,14 +218,10 @@ static int spitz_mic_bias(struct snd_soc_dapm_widget *w,
gpio_set_value(SPITZ_GPIO_MIC_BIAS,
SND_SOC_DAPM_EVENT_ON(event));
if (machine_is_akita()) {
if (SND_SOC_DAPM_EVENT_ON(event))
akita_set_ioexp(&akitaioexp_device.dev,
AKITA_IOEXP_MIC_BIAS);
else
akita_reset_ioexp(&akitaioexp_device.dev,
AKITA_IOEXP_MIC_BIAS);
}
if (machine_is_akita())
gpio_set_value(AKITA_GPIO_MIC_BIAS,
SND_SOC_DAPM_EVENT_ON(event));
return 0;
}
......
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