mirror of https://gitee.com/openkylin/linux.git
[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: Dmitry Baryshkov <dbaryshkov@gmail.com> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Eric Miao <eric.miao@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Eric Miao
Russell King
parent
4fe3224fff
commit
f72de6638b
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@ -30,7 +30,6 @@ obj-$(CONFIG_MACH_TRIZEPS4) += trizeps4.o
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obj-$(CONFIG_MACH_COLIBRI) += colibri.o
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obj-$(CONFIG_PXA_SHARP_C7xx) += corgi.o sharpsl_pm.o corgi_pm.o
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obj-$(CONFIG_PXA_SHARP_Cxx00) += spitz.o sharpsl_pm.o spitz_pm.o
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obj-$(CONFIG_MACH_AKITA) += akita-ioexp.o
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obj-$(CONFIG_MACH_POODLE) += poodle.o
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obj-$(CONFIG_MACH_PCM027) += pcm027.o
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obj-$(CONFIG_MACH_PCM990_BASEBOARD) += pcm990-baseboard.o
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@ -1,222 +0,0 @@
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/*
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* Support for the Extra GPIOs on the Sharp SL-C1000 (Akita)
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* (uses a Maxim MAX7310 8 Port IO Expander)
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*
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* Copyright 2005 Openedhand Ltd.
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*
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* Author: Richard Purdie <richard@openedhand.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/module.h>
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#include <linux/i2c.h>
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#include <linux/slab.h>
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#include <linux/workqueue.h>
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#include <mach/akita.h>
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/* MAX7310 Regiser Map */
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#define MAX7310_INPUT 0x00
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#define MAX7310_OUTPUT 0x01
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#define MAX7310_POLINV 0x02
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#define MAX7310_IODIR 0x03 /* 1 = Input, 0 = Output */
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#define MAX7310_TIMEOUT 0x04
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/* Addresses to scan */
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static const unsigned short normal_i2c[] = { 0x18, I2C_CLIENT_END };
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/* I2C Magic */
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I2C_CLIENT_INSMOD;
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static int max7310_write(struct i2c_client *client, int address, int data);
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static struct i2c_client max7310_template;
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static void akita_ioexp_work(struct work_struct *private_);
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static struct device *akita_ioexp_device;
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static unsigned char ioexp_output_value = AKITA_IOEXP_IO_OUT;
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DECLARE_WORK(akita_ioexp, akita_ioexp_work);
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/*
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* MAX7310 Access
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*/
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static int max7310_config(struct device *dev, int iomode, int polarity)
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{
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int ret;
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struct i2c_client *client = to_i2c_client(dev);
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ret = max7310_write(client, MAX7310_POLINV, polarity);
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if (ret < 0)
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return ret;
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ret = max7310_write(client, MAX7310_IODIR, iomode);
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return ret;
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}
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static int max7310_set_ouputs(struct device *dev, int outputs)
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{
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struct i2c_client *client = to_i2c_client(dev);
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return max7310_write(client, MAX7310_OUTPUT, outputs);
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}
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/*
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* I2C Functions
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*/
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static int max7310_write(struct i2c_client *client, int address, int value)
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{
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u8 data[2];
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data[0] = address & 0xff;
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data[1] = value & 0xff;
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if (i2c_master_send(client, data, 2) == 2)
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return 0;
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return -1;
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}
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static int max7310_detect(struct i2c_adapter *adapter, int address, int kind)
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{
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struct i2c_client *new_client;
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int err;
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if (!(new_client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL)))
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return -ENOMEM;
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max7310_template.adapter = adapter;
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max7310_template.addr = address;
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memcpy(new_client, &max7310_template, sizeof(struct i2c_client));
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if ((err = i2c_attach_client(new_client))) {
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kfree(new_client);
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return err;
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}
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max7310_config(&new_client->dev, AKITA_IOEXP_IO_DIR, 0);
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akita_ioexp_device = &new_client->dev;
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schedule_work(&akita_ioexp);
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return 0;
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}
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static int max7310_attach_adapter(struct i2c_adapter *adapter)
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{
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return i2c_probe(adapter, &addr_data, max7310_detect);
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}
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static int max7310_detach_client(struct i2c_client *client)
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{
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int err;
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akita_ioexp_device = NULL;
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if ((err = i2c_detach_client(client)))
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return err;
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kfree(client);
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return 0;
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}
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static struct i2c_driver max7310_i2c_driver = {
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.driver = {
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.name = "akita-max7310",
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},
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.id = I2C_DRIVERID_AKITAIOEXP,
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.attach_adapter = max7310_attach_adapter,
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.detach_client = max7310_detach_client,
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};
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static struct i2c_client max7310_template = {
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name: "akita-max7310",
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driver: &max7310_i2c_driver,
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};
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void akita_set_ioexp(struct device *dev, unsigned char bit)
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{
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ioexp_output_value |= bit;
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if (akita_ioexp_device)
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schedule_work(&akita_ioexp);
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return;
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}
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void akita_reset_ioexp(struct device *dev, unsigned char bit)
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{
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ioexp_output_value &= ~bit;
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if (akita_ioexp_device)
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schedule_work(&akita_ioexp);
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return;
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}
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EXPORT_SYMBOL(akita_set_ioexp);
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EXPORT_SYMBOL(akita_reset_ioexp);
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static void akita_ioexp_work(struct work_struct *private_)
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{
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if (akita_ioexp_device)
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max7310_set_ouputs(akita_ioexp_device, ioexp_output_value);
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}
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#ifdef CONFIG_PM
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static int akita_ioexp_suspend(struct platform_device *pdev, pm_message_t state)
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{
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flush_scheduled_work();
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return 0;
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}
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static int akita_ioexp_resume(struct platform_device *pdev)
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{
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schedule_work(&akita_ioexp);
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return 0;
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}
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#else
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#define akita_ioexp_suspend NULL
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#define akita_ioexp_resume NULL
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#endif
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static int __init akita_ioexp_probe(struct platform_device *pdev)
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{
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return i2c_add_driver(&max7310_i2c_driver);
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}
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static int akita_ioexp_remove(struct platform_device *pdev)
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{
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i2c_del_driver(&max7310_i2c_driver);
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return 0;
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}
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static struct platform_driver akita_ioexp_driver = {
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.probe = akita_ioexp_probe,
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.remove = akita_ioexp_remove,
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.suspend = akita_ioexp_suspend,
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.resume = akita_ioexp_resume,
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.driver = {
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.name = "akita-ioexp",
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},
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};
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static int __init akita_ioexp_init(void)
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{
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return platform_driver_register(&akita_ioexp_driver);
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}
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static void __exit akita_ioexp_exit(void)
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{
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platform_driver_unregister(&akita_ioexp_driver);
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}
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MODULE_AUTHOR("Richard Purdie <rpurdie@openedhand.com>");
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MODULE_DESCRIPTION("Akita IO-Expander driver");
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MODULE_LICENSE("GPL");
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fs_initcall(akita_ioexp_init);
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module_exit(akita_ioexp_exit);
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@ -1,32 +0,0 @@
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/*
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* Hardware specific definitions for SL-C1000 (Akita)
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*
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* Copyright (c) 2005 Richard Purdie
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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/* Akita IO Expander GPIOs */
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#define AKITA_IOEXP_RESERVED_7 (1 << 7)
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#define AKITA_IOEXP_IR_ON (1 << 6)
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#define AKITA_IOEXP_AKIN_PULLUP (1 << 5)
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#define AKITA_IOEXP_BACKLIGHT_CONT (1 << 4)
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#define AKITA_IOEXP_BACKLIGHT_ON (1 << 3)
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#define AKITA_IOEXP_MIC_BIAS (1 << 2)
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#define AKITA_IOEXP_RESERVED_1 (1 << 1)
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#define AKITA_IOEXP_RESERVED_0 (1 << 0)
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/* Direction Bitfield 0=output 1=input */
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#define AKITA_IOEXP_IO_DIR 0
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/* Default Values */
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#define AKITA_IOEXP_IO_OUT (AKITA_IOEXP_IR_ON | AKITA_IOEXP_AKIN_PULLUP)
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extern struct platform_device akitaioexp_device;
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void akita_set_ioexp(struct device *dev, unsigned char bitmask);
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void akita_reset_ioexp(struct device *dev, unsigned char bitmask);
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@ -151,6 +151,17 @@
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#define SPITZ_GPIO_BACKLIGHT_ON (SPITZ_SCP2_GPIO_BASE + 7)
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#define SPITZ_GPIO_MIC_BIAS (SPITZ_SCP2_GPIO_BASE + 8)
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/* Akita IO Expander GPIOs */
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#define AKITA_IOEXP_GPIO_BASE (NR_BUILTIN_GPIO + 12)
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#define AKITA_GPIO_RESERVED_0 (AKITA_IOEXP_GPIO_BASE + 0)
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#define AKITA_GPIO_RESERVED_1 (AKITA_IOEXP_GPIO_BASE + 1)
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#define AKITA_GPIO_MIC_BIAS (AKITA_IOEXP_GPIO_BASE + 2)
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#define AKITA_GPIO_BACKLIGHT_ON (AKITA_IOEXP_GPIO_BASE + 3)
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#define AKITA_GPIO_BACKLIGHT_CONT (AKITA_IOEXP_GPIO_BASE + 4)
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#define AKITA_GPIO_AKIN_PULLUP (AKITA_IOEXP_GPIO_BASE + 5)
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#define AKITA_GPIO_IR_ON (AKITA_IOEXP_GPIO_BASE + 6)
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#define AKITA_GPIO_RESERVED_7 (AKITA_IOEXP_GPIO_BASE + 7)
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/* Spitz IRQ Definitions */
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#define SPITZ_IRQ_GPIO_KEY_INT IRQ_GPIO(SPITZ_GPIO_KEY_INT)
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@ -24,6 +24,8 @@
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#include <linux/mmc/host.h>
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#include <linux/pm.h>
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#include <linux/backlight.h>
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#include <linux/i2c.h>
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#include <linux/i2c/pca953x.h>
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#include <linux/spi/spi.h>
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#include <linux/spi/ads7846.h>
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#include <linux/spi/corgi_lcd.h>
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@ -52,7 +54,6 @@
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#include <mach/udc.h>
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#include <mach/pxafb.h>
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#include <mach/pxa2xx_spi.h>
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#include <mach/akita.h>
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#include <mach/spitz.h>
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#include <mach/sharpsl.h>
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@ -313,16 +314,8 @@ static void spitz_notify_intensity(int intensity)
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}
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if (machine_is_akita()) {
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/* Bit 5 is via IO-Expander */
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if (intensity & 0x0020)
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akita_reset_ioexp(&akitaioexp_device.dev, AKITA_IOEXP_BACKLIGHT_CONT);
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else
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akita_set_ioexp(&akitaioexp_device.dev, AKITA_IOEXP_BACKLIGHT_CONT);
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if (intensity)
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akita_set_ioexp(&akitaioexp_device.dev, AKITA_IOEXP_BACKLIGHT_ON);
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else
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akita_reset_ioexp(&akitaioexp_device.dev, AKITA_IOEXP_BACKLIGHT_ON);
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gpio_set_value(AKITA_GPIO_BACKLIGHT_CONT, !(intensity & 0x20));
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gpio_set_value(AKITA_GPIO_BACKLIGHT_ON, intensity);
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return;
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}
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}
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@ -565,10 +558,7 @@ static void spitz_irda_transceiver_mode(struct device *dev, int mode)
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#ifdef CONFIG_MACH_AKITA
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static void akita_irda_transceiver_mode(struct device *dev, int mode)
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{
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if (mode & IR_OFF)
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akita_set_ioexp(&akitaioexp_device.dev, AKITA_IOEXP_IR_ON);
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else
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akita_reset_ioexp(&akitaioexp_device.dev, AKITA_IOEXP_IR_ON);
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gpio_set_value(AKITA_GPIO_IR_ON, mode & IR_OFF);
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pxa2xx_transceiver_mode(dev, mode);
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}
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#endif
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@ -679,12 +669,17 @@ static void __init spitz_init(void)
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/*
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* Akita IO Expander
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*/
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struct platform_device akitaioexp_device = {
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.name = "akita-ioexp",
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.id = -1,
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static struct pca953x_platform_data akita_ioexp = {
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.gpio_base = AKITA_IOEXP_GPIO_BASE,
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};
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EXPORT_SYMBOL_GPL(akitaioexp_device);
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static struct i2c_board_info akita_i2c_board_info[] = {
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{
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.type = "max7310",
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.addr = 0x18,
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.platform_data = &akita_ioexp,
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},
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};
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static void __init akita_init(void)
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{
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@ -694,9 +689,9 @@ static void __init akita_init(void)
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spitz_pcmcia_config.num_devs = 1;
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platform_scoop_config = &spitz_pcmcia_config;
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platform_device_register(&akitaioexp_device);
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pxa_set_i2c_info(NULL);
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i2c_register_board_info(0, ARRAY_AND_SIZE(akita_i2c_board_info));
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spitzscoop_device.dev.parent = &akitaioexp_device.dev;
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common_init();
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}
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#endif
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@ -28,7 +28,6 @@
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#include <asm/mach-types.h>
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#include <mach/pxa-regs.h>
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#include <mach/hardware.h>
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#include <mach/akita.h>
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#include <mach/spitz.h>
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#include "../codecs/wm8750.h"
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#include "pxa2xx-pcm.h"
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@ -219,14 +218,10 @@ static int spitz_mic_bias(struct snd_soc_dapm_widget *w,
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gpio_set_value(SPITZ_GPIO_MIC_BIAS,
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SND_SOC_DAPM_EVENT_ON(event));
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if (machine_is_akita()) {
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if (SND_SOC_DAPM_EVENT_ON(event))
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akita_set_ioexp(&akitaioexp_device.dev,
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AKITA_IOEXP_MIC_BIAS);
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else
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akita_reset_ioexp(&akitaioexp_device.dev,
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AKITA_IOEXP_MIC_BIAS);
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}
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if (machine_is_akita())
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gpio_set_value(AKITA_GPIO_MIC_BIAS,
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SND_SOC_DAPM_EVENT_ON(event));
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return 0;
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}
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