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linux/arch/arm/mach-ep93xx/edb93xx.c
Linus Walleij 1dfbf334f1
spi: ep93xx: Convert to use CS GPIO descriptors 
This converts the EP93xx SPI master driver to use GPIO
descriptors for chip select handling.

EP93xx was using platform data to pass in GPIO lines,
by converting all board files to use GPIO descriptor
tables the core will look up the GPIO lines from the
SPI device in the same manner as for device tree.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-05-02 10:37:59 +09:00

349 lines
9.5 KiB
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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/i2c.h>
#include <linux/spi/spi.h>
#include <linux/gpio/machine.h>
#include <sound/cs4271.h>
#include <mach/hardware.h>
#include <linux/platform_data/video-ep93xx.h>
#include <linux/platform_data/spi-ep93xx.h>
#include <mach/gpio-ep93xx.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include "soc.h"
static void __init edb93xx_register_flash(void)
{
if (machine_is_edb9307() || machine_is_edb9312() ||
machine_is_edb9315()) {
ep93xx_register_flash(4, EP93XX_CS6_PHYS_BASE, SZ_32M);
} else {
ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_16M);
}
}
static struct ep93xx_eth_data __initdata edb93xx_eth_data = {
.phy_id = 1,
};
/*************************************************************************
* EDB93xx i2c peripheral handling
*************************************************************************/
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(edb93xxa_i2c_board_info,
ARRAY_SIZE(edb93xxa_i2c_board_info));
} else if (machine_is_edb9302() || machine_is_edb9307()
|| machine_is_edb9312() || machine_is_edb9315()) {
ep93xx_register_i2c(edb93xx_i2c_board_info,
ARRAY_SIZE(edb93xx_i2c_board_info));
}
}
/*************************************************************************
* EDB93xx SPI peripheral handling
*************************************************************************/
static struct cs4271_platform_data edb93xx_cs4271_data = {
.gpio_nreset = -EINVAL, /* filled in later */
};
static struct spi_board_info edb93xx_spi_board_info[] __initdata = {
{
.modalias = "cs4271",
.platform_data = &edb93xx_cs4271_data,
.max_speed_hz = 6000000,
.bus_num = 0,
.chip_select = 0,
.mode = SPI_MODE_3,
},
};
static struct gpiod_lookup_table edb93xx_spi_cs_gpio_table = {
.dev_id = "ep93xx-spi.0",
.table = {
GPIO_LOOKUP("A", 6, "cs", GPIO_ACTIVE_LOW),
{ },
},
};
static struct ep93xx_spi_info edb93xx_spi_info __initdata = {
/* Intentionally left blank */
};
static void __init edb93xx_register_spi(void)
{
if (machine_is_edb9301() || machine_is_edb9302())
edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO1;
else if (machine_is_edb9302a() || machine_is_edb9307a())
edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_H(2);
else if (machine_is_edb9315a())
edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO14;
gpiod_add_lookup_table(&edb93xx_spi_cs_gpio_table);
ep93xx_register_spi(&edb93xx_spi_info, edb93xx_spi_board_info,
ARRAY_SIZE(edb93xx_spi_board_info));
}
/*************************************************************************
* EDB93xx I2S
*************************************************************************/
static struct platform_device edb93xx_audio_device = {
.name = "edb93xx-audio",
.id = -1,
};
static int __init edb93xx_has_audio(void)
{
return (machine_is_edb9301() || machine_is_edb9302() ||
machine_is_edb9302a() || machine_is_edb9307a() ||
machine_is_edb9315a());
}
static void __init edb93xx_register_i2s(void)
{
if (edb93xx_has_audio()) {
ep93xx_register_i2s();
platform_device_register(&edb93xx_audio_device);
}
}
/*************************************************************************
* EDB93xx pwm
*************************************************************************/
static void __init edb93xx_register_pwm(void)
{
if (machine_is_edb9301() ||
machine_is_edb9302() || machine_is_edb9302a()) {
/* EP9301 and EP9302 only have pwm.1 (EGPIO14) */
ep93xx_register_pwm(0, 1);
} else if (machine_is_edb9307() || machine_is_edb9307a()) {
/* EP9307 only has pwm.0 (PWMOUT) */
ep93xx_register_pwm(1, 0);
} else {
/* EP9312 and EP9315 have both */
ep93xx_register_pwm(1, 1);
}
}
/*************************************************************************
* EDB93xx framebuffer
*************************************************************************/
static struct ep93xxfb_mach_info __initdata edb93xxfb_info = {
.flags = 0,
};
static int __init edb93xx_has_fb(void)
{
/* These platforms have an ep93xx with video capability */
return machine_is_edb9307() || machine_is_edb9307a() ||
machine_is_edb9312() || machine_is_edb9315() ||
machine_is_edb9315a();
}
static void __init edb93xx_register_fb(void)
{
if (!edb93xx_has_fb())
return;
if (machine_is_edb9307a() || machine_is_edb9315a())
edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN0;
else
edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN3;
ep93xx_register_fb(&edb93xxfb_info);
}
/*************************************************************************
* EDB93xx IDE
*************************************************************************/
static int __init edb93xx_has_ide(void)
{
/*
* Although EDB9312 and EDB9315 do have IDE capability, they have
* INTRQ line wired as pull-up, which makes using IDE interface
* problematic.
*/
return machine_is_edb9312() || machine_is_edb9315() ||
machine_is_edb9315a();
}
static void __init edb93xx_register_ide(void)
{
if (!edb93xx_has_ide())
return;
ep93xx_register_ide();
}
static void __init edb93xx_init_machine(void)
{
ep93xx_init_devices();
edb93xx_register_flash();
ep93xx_register_eth(&edb93xx_eth_data, 1);
edb93xx_register_i2c();
edb93xx_register_spi();
edb93xx_register_i2s();
edb93xx_register_pwm();
edb93xx_register_fb();
edb93xx_register_ide();
ep93xx_register_adc();
}
#ifdef CONFIG_MACH_EDB9301
MACHINE_START(EDB9301, "Cirrus Logic EDB9301 Evaluation Board")
/* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
.atag_offset = 0x100,
.map_io = ep93xx_map_io,
.init_irq = ep93xx_init_irq,
.init_time = ep93xx_timer_init,
.init_machine = edb93xx_init_machine,
.init_late = ep93xx_init_late,
.restart = ep93xx_restart,
MACHINE_END
#endif
#ifdef CONFIG_MACH_EDB9302
MACHINE_START(EDB9302, "Cirrus Logic EDB9302 Evaluation Board")
/* Maintainer: George Kashperko <george@chas.com.ua> */
.atag_offset = 0x100,
.map_io = ep93xx_map_io,
.init_irq = ep93xx_init_irq,
.init_time = ep93xx_timer_init,
.init_machine = edb93xx_init_machine,
.init_late = ep93xx_init_late,
.restart = ep93xx_restart,
MACHINE_END
#endif
#ifdef CONFIG_MACH_EDB9302A
MACHINE_START(EDB9302A, "Cirrus Logic EDB9302A Evaluation Board")
/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
.atag_offset = 0x100,
.map_io = ep93xx_map_io,
.init_irq = ep93xx_init_irq,
.init_time = ep93xx_timer_init,
.init_machine = edb93xx_init_machine,
.init_late = ep93xx_init_late,
.restart = ep93xx_restart,
MACHINE_END
#endif
#ifdef CONFIG_MACH_EDB9307
MACHINE_START(EDB9307, "Cirrus Logic EDB9307 Evaluation Board")
/* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
.atag_offset = 0x100,
.map_io = ep93xx_map_io,
.init_irq = ep93xx_init_irq,
.init_time = ep93xx_timer_init,
.init_machine = edb93xx_init_machine,
.init_late = ep93xx_init_late,
.restart = ep93xx_restart,
MACHINE_END
#endif
#ifdef CONFIG_MACH_EDB9307A
MACHINE_START(EDB9307A, "Cirrus Logic EDB9307A Evaluation Board")
/* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
.atag_offset = 0x100,
.map_io = ep93xx_map_io,
.init_irq = ep93xx_init_irq,
.init_time = ep93xx_timer_init,
.init_machine = edb93xx_init_machine,
.init_late = ep93xx_init_late,
.restart = ep93xx_restart,
MACHINE_END
#endif
#ifdef CONFIG_MACH_EDB9312
MACHINE_START(EDB9312, "Cirrus Logic EDB9312 Evaluation Board")
/* Maintainer: Toufeeq Hussain <toufeeq_hussain@infosys.com> */
.atag_offset = 0x100,
.map_io = ep93xx_map_io,
.init_irq = ep93xx_init_irq,
.init_time = ep93xx_timer_init,
.init_machine = edb93xx_init_machine,
.init_late = ep93xx_init_late,
.restart = ep93xx_restart,
MACHINE_END
#endif
#ifdef CONFIG_MACH_EDB9315
MACHINE_START(EDB9315, "Cirrus Logic EDB9315 Evaluation Board")
/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
.atag_offset = 0x100,
.map_io = ep93xx_map_io,
.init_irq = ep93xx_init_irq,
.init_time = ep93xx_timer_init,
.init_machine = edb93xx_init_machine,
.init_late = ep93xx_init_late,
.restart = ep93xx_restart,
MACHINE_END
#endif
#ifdef CONFIG_MACH_EDB9315A
MACHINE_START(EDB9315A, "Cirrus Logic EDB9315A Evaluation Board")
/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
.atag_offset = 0x100,
.map_io = ep93xx_map_io,
.init_irq = ep93xx_init_irq,
.init_time = ep93xx_timer_init,
.init_machine = edb93xx_init_machine,
.init_late = ep93xx_init_late,
.restart = ep93xx_restart,
MACHINE_END
#endif
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