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android_kernel_xiaomi_sdm845/arch/arm/mach-ep93xx/edb93xx.c
Hartley Sweeten 6531a991f9 ARM: 5754/1: ep93xx: update i2c support 
Update the ep93xx i2c support:

  1) The platform init code passes the configuration data for the
     i2c-gpio driver.  This allows any gpio pin do be used for the
     sda and scl pins.  It also allows the platform to specify the
     udelay and timeout.
  2) Program the gpio configuration register to enable/disable the
     open drain drivers.  Note that this really only works if the
     sda and scl pins are set to EP93XX_GPIO_LINE_EEDAT and
     EP93XX_GPIO_LINE_EECLK.
  3) Update the edb93xx.c platform init to use the new support.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-10 12:45:13 +01:00

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/*
* arch/arm/mach-ep93xx/edb93xx.c
* Cirrus Logic EDB93xx Development Board support.
*
* EDB93XX, EDB9301, EDB9307A
* Copyright (C) 2008-2009 H Hartley Sweeten <hsweeten@visionengravers.com>
*
* EDB9302
* Copyright (C) 2006 George Kashperko <george@chas.com.ua>
*
* EDB9302A, EDB9315, EDB9315A
* Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
*
* EDB9307
* Copyright (C) 2007 Herbert Valerio Riedel <hvr@gnu.org>
*
* EDB9312
* Copyright (C) 2006 Infosys Technologies Limited
* Toufeeq Hussain <toufeeq_hussain@infosys.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/init.h>
#include <linux/platform_device.h>
#include <linux/mtd/physmap.h>
#include <linux/gpio.h>
#include <linux/i2c.h>
#include <linux/i2c-gpio.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
static struct physmap_flash_data edb93xx_flash_data;
static struct resource edb93xx_flash_resource = {
.flags = IORESOURCE_MEM,
};
static struct platform_device edb93xx_flash = {
.name = "physmap-flash",
.id = 0,
.dev = {
.platform_data = &edb93xx_flash_data,
},
.num_resources = 1,
.resource = &edb93xx_flash_resource,
};
static void __init __edb93xx_register_flash(unsigned int width,
resource_size_t start, resource_size_t size)
{
edb93xx_flash_data.width = width;
edb93xx_flash_resource.start = start;
edb93xx_flash_resource.end = start + size - 1;
platform_device_register(&edb93xx_flash);
}
static void __init edb93xx_register_flash(void)
{
if (machine_is_edb9307() || machine_is_edb9312() ||
machine_is_edb9315()) {
__edb93xx_register_flash(4, EP93XX_CS6_PHYS_BASE, SZ_32M);
} else {
__edb93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_16M);
}
}
static struct ep93xx_eth_data edb93xx_eth_data = {
.phy_id = 1,
};
/*************************************************************************
* EDB93xx i2c peripheral handling
*************************************************************************/
static struct i2c_gpio_platform_data edb93xx_i2c_gpio_data = {
.sda_pin = EP93XX_GPIO_LINE_EEDAT,
.sda_is_open_drain = 0,
.scl_pin = EP93XX_GPIO_LINE_EECLK,
.scl_is_open_drain = 0,
.udelay = 0, /* default to 100 kHz */
.timeout = 0, /* default to 100 ms */
};
static struct i2c_board_info __initdata edb93xxa_i2c_board_info[] = {
{
I2C_BOARD_INFO("isl1208", 0x6f),
},
};
static struct i2c_board_info __initdata edb93xx_i2c_board_info[] = {
{
I2C_BOARD_INFO("ds1337", 0x68),
},
};
static void __init edb93xx_register_i2c(void)
{
if (machine_is_edb9302a() || machine_is_edb9307a() ||
machine_is_edb9315a()) {
ep93xx_register_i2c(&edb93xx_i2c_gpio_data,
edb93xxa_i2c_board_info,
ARRAY_SIZE(edb93xxa_i2c_board_info));
} else if (machine_is_edb9307() || machine_is_edb9312() ||
machine_is_edb9315()) {
ep93xx_register_i2c(&edb93xx_i2c_gpio_data
edb93xx_i2c_board_info,
ARRAY_SIZE(edb93xx_i2c_board_info));
}
}
static void __init edb93xx_init_machine(void)
{
ep93xx_init_devices();
edb93xx_register_flash();
ep93xx_register_eth(&edb93xx_eth_data, 1);
edb93xx_register_i2c();
}
#ifdef CONFIG_MACH_EDB9301
MACHINE_START(EDB9301, "Cirrus Logic EDB9301 Evaluation Board")
/* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
.phys_io = EP93XX_APB_PHYS_BASE,
.io_pg_offst = ((EP93XX_APB_VIRT_BASE) >> 18) & 0xfffc,
.boot_params = EP93XX_SDCE3_PHYS_BASE_SYNC + 0x100,
.map_io = ep93xx_map_io,
.init_irq = ep93xx_init_irq,
.timer = &ep93xx_timer,
.init_machine = edb93xx_init_machine,
MACHINE_END
#endif
#ifdef CONFIG_MACH_EDB9302
MACHINE_START(EDB9302, "Cirrus Logic EDB9302 Evaluation Board")
/* Maintainer: George Kashperko <george@chas.com.ua> */
.phys_io = EP93XX_APB_PHYS_BASE,
.io_pg_offst = ((EP93XX_APB_VIRT_BASE) >> 18) & 0xfffc,
.boot_params = EP93XX_SDCE3_PHYS_BASE_SYNC + 0x100,
.map_io = ep93xx_map_io,
.init_irq = ep93xx_init_irq,
.timer = &ep93xx_timer,
.init_machine = edb93xx_init_machine,
MACHINE_END
#endif
#ifdef CONFIG_MACH_EDB9302A
MACHINE_START(EDB9302A, "Cirrus Logic EDB9302A Evaluation Board")
/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
.phys_io = EP93XX_APB_PHYS_BASE,
.io_pg_offst = ((EP93XX_APB_VIRT_BASE) >> 18) & 0xfffc,
.boot_params = EP93XX_SDCE0_PHYS_BASE + 0x100,
.map_io = ep93xx_map_io,
.init_irq = ep93xx_init_irq,
.timer = &ep93xx_timer,
.init_machine = edb93xx_init_machine,
MACHINE_END
#endif
#ifdef CONFIG_MACH_EDB9307
MACHINE_START(EDB9307, "Cirrus Logic EDB9307 Evaluation Board")
/* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
.phys_io = EP93XX_APB_PHYS_BASE,
.io_pg_offst = ((EP93XX_APB_VIRT_BASE) >> 18) & 0xfffc,
.boot_params = EP93XX_SDCE3_PHYS_BASE_SYNC + 0x100,
.map_io = ep93xx_map_io,
.init_irq = ep93xx_init_irq,
.timer = &ep93xx_timer,
.init_machine = edb93xx_init_machine,
MACHINE_END
#endif
#ifdef CONFIG_MACH_EDB9307A
MACHINE_START(EDB9307A, "Cirrus Logic EDB9307A Evaluation Board")
/* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
.phys_io = EP93XX_APB_PHYS_BASE,
.io_pg_offst = ((EP93XX_APB_VIRT_BASE) >> 18) & 0xfffc,
.boot_params = EP93XX_SDCE0_PHYS_BASE + 0x100,
.map_io = ep93xx_map_io,
.init_irq = ep93xx_init_irq,
.timer = &ep93xx_timer,
.init_machine = edb93xx_init_machine,
MACHINE_END
#endif
#ifdef CONFIG_MACH_EDB9312
MACHINE_START(EDB9312, "Cirrus Logic EDB9312 Evaluation Board")
/* Maintainer: Toufeeq Hussain <toufeeq_hussain@infosys.com> */
.phys_io = EP93XX_APB_PHYS_BASE,
.io_pg_offst = ((EP93XX_APB_VIRT_BASE) >> 18) & 0xfffc,
.boot_params = EP93XX_SDCE3_PHYS_BASE_SYNC + 0x100,
.map_io = ep93xx_map_io,
.init_irq = ep93xx_init_irq,
.timer = &ep93xx_timer,
.init_machine = edb93xx_init_machine,
MACHINE_END
#endif
#ifdef CONFIG_MACH_EDB9315
MACHINE_START(EDB9315, "Cirrus Logic EDB9315 Evaluation Board")
/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
.phys_io = EP93XX_APB_PHYS_BASE,
.io_pg_offst = ((EP93XX_APB_VIRT_BASE) >> 18) & 0xfffc,
.boot_params = EP93XX_SDCE3_PHYS_BASE_SYNC + 0x100,
.map_io = ep93xx_map_io,
.init_irq = ep93xx_init_irq,
.timer = &ep93xx_timer,
.init_machine = edb93xx_init_machine,
MACHINE_END
#endif
#ifdef CONFIG_MACH_EDB9315A
MACHINE_START(EDB9315A, "Cirrus Logic EDB9315A Evaluation Board")
/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
.phys_io = EP93XX_APB_PHYS_BASE,
.io_pg_offst = ((EP93XX_APB_VIRT_BASE) >> 18) & 0xfffc,
.boot_params = EP93XX_SDCE0_PHYS_BASE + 0x100,
.map_io = ep93xx_map_io,
.init_irq = ep93xx_init_irq,
.timer = &ep93xx_timer,
.init_machine = edb93xx_init_machine,
MACHINE_END
#endif
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