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linux/arch/arm/mach-mxs/mach-tx28.c
Shawn Guo d1654b803f ARM: mxs: enable pinctrl dummy states 
The mxs pinctrl driver will only support DT probe.  That said, the mxs
device drivers can only get pinctrl state from pinctrl subsystem when
the drivers get probed from device tree.

Before converting the whole mxs platform support over to device tree,
we need to enable pinctrl dummy states for those non-DT board files
to ensure the pinctrl API adopted by mxs device drivers will work for
both DT and non-DT probe.

Instead of calling pinctrl_provide_dummies() directly in every board
file, the patch introduces soc specific calls mx23_soc_init() and
mx28_soc_init() for boards' .init_machine hook to invoke, so that
any soc specific setup for non-DT boot only can be added there.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-05-08 23:05:17 +08:00

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/*
* Copyright (C) 2010 <LW@KARO-electronics.de>
*
* based on: mach-mx28_evk.c
* Copyright 2010 Freescale Semiconductor, 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
* version 2 as published by the Free Software Foundation
*/
#include <linux/kernel.h>
#include <linux/gpio.h>
#include <linux/leds.h>
#include <linux/platform_device.h>
#include <linux/spi/spi.h>
#include <linux/spi/spi_gpio.h>
#include <linux/i2c.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include <mach/common.h>
#include <mach/iomux-mx28.h>
#include "devices-mx28.h"
#include "module-tx28.h"
#define TX28_STK5_GPIO_LED MXS_GPIO_NR(4, 10)
static const iomux_cfg_t tx28_stk5v3_pads[] __initconst = {
/* LED */
MX28_PAD_ENET0_RXD3__GPIO_4_10 |
MXS_PAD_3V3 | MXS_PAD_4MA | MXS_PAD_NOPULL,
/* framebuffer */
#define LCD_MODE (MXS_PAD_3V3 | MXS_PAD_4MA)
MX28_PAD_LCD_D00__LCD_D0 | LCD_MODE,
MX28_PAD_LCD_D01__LCD_D1 | LCD_MODE,
MX28_PAD_LCD_D02__LCD_D2 | LCD_MODE,
MX28_PAD_LCD_D03__LCD_D3 | LCD_MODE,
MX28_PAD_LCD_D04__LCD_D4 | LCD_MODE,
MX28_PAD_LCD_D05__LCD_D5 | LCD_MODE,
MX28_PAD_LCD_D06__LCD_D6 | LCD_MODE,
MX28_PAD_LCD_D07__LCD_D7 | LCD_MODE,
MX28_PAD_LCD_D08__LCD_D8 | LCD_MODE,
MX28_PAD_LCD_D09__LCD_D9 | LCD_MODE,
MX28_PAD_LCD_D10__LCD_D10 | LCD_MODE,
MX28_PAD_LCD_D11__LCD_D11 | LCD_MODE,
MX28_PAD_LCD_D12__LCD_D12 | LCD_MODE,
MX28_PAD_LCD_D13__LCD_D13 | LCD_MODE,
MX28_PAD_LCD_D14__LCD_D14 | LCD_MODE,
MX28_PAD_LCD_D15__LCD_D15 | LCD_MODE,
MX28_PAD_LCD_D16__LCD_D16 | LCD_MODE,
MX28_PAD_LCD_D17__LCD_D17 | LCD_MODE,
MX28_PAD_LCD_D18__LCD_D18 | LCD_MODE,
MX28_PAD_LCD_D19__LCD_D19 | LCD_MODE,
MX28_PAD_LCD_D20__LCD_D20 | LCD_MODE,
MX28_PAD_LCD_D21__LCD_D21 | LCD_MODE,
MX28_PAD_LCD_D22__LCD_D22 | LCD_MODE,
MX28_PAD_LCD_D23__LCD_D23 | LCD_MODE,
MX28_PAD_LCD_RD_E__LCD_VSYNC | LCD_MODE,
MX28_PAD_LCD_WR_RWN__LCD_HSYNC | LCD_MODE,
MX28_PAD_LCD_RS__LCD_DOTCLK | LCD_MODE,
MX28_PAD_LCD_CS__LCD_CS | LCD_MODE,
MX28_PAD_LCD_VSYNC__LCD_VSYNC | LCD_MODE,
MX28_PAD_LCD_HSYNC__LCD_HSYNC | LCD_MODE,
MX28_PAD_LCD_DOTCLK__LCD_DOTCLK | LCD_MODE,
MX28_PAD_LCD_ENABLE__GPIO_1_31 | LCD_MODE,
MX28_PAD_LCD_RESET__GPIO_3_30 | LCD_MODE,
MX28_PAD_PWM0__PWM_0 | LCD_MODE,
/* UART1 */
MX28_PAD_AUART0_CTS__DUART_RX,
MX28_PAD_AUART0_RTS__DUART_TX,
MX28_PAD_AUART0_TX__DUART_RTS,
MX28_PAD_AUART0_RX__DUART_CTS,
/* UART2 */
MX28_PAD_AUART1_RX__AUART1_RX,
MX28_PAD_AUART1_TX__AUART1_TX,
MX28_PAD_AUART1_RTS__AUART1_RTS,
MX28_PAD_AUART1_CTS__AUART1_CTS,
/* CAN */
MX28_PAD_GPMI_RDY2__CAN0_TX,
MX28_PAD_GPMI_RDY3__CAN0_RX,
/* I2C */
MX28_PAD_I2C0_SCL__I2C0_SCL,
MX28_PAD_I2C0_SDA__I2C0_SDA,
/* TSC2007 */
MX28_PAD_SAIF0_MCLK__GPIO_3_20 | MXS_PAD_3V3 | MXS_PAD_4MA | MXS_PAD_PULLUP,
/* MMC0 */
MX28_PAD_SSP0_DATA0__SSP0_D0 |
(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
MX28_PAD_SSP0_DATA1__SSP0_D1 |
(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
MX28_PAD_SSP0_DATA2__SSP0_D2 |
(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
MX28_PAD_SSP0_DATA3__SSP0_D3 |
(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
MX28_PAD_SSP0_CMD__SSP0_CMD |
(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
MX28_PAD_SSP0_DETECT__SSP0_CARD_DETECT |
(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
MX28_PAD_SSP0_SCK__SSP0_SCK |
(MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
};
static const struct gpio_led tx28_stk5v3_leds[] __initconst = {
{
.name = "GPIO-LED",
.default_trigger = "heartbeat",
.gpio = TX28_STK5_GPIO_LED,
},
};
static const struct gpio_led_platform_data tx28_stk5v3_led_data __initconst = {
.leds = tx28_stk5v3_leds,
.num_leds = ARRAY_SIZE(tx28_stk5v3_leds),
};
static struct spi_board_info tx28_spi_board_info[] = {
{
.modalias = "spidev",
.max_speed_hz = 20000000,
.bus_num = 0,
.chip_select = 1,
.controller_data = (void *)SPI_GPIO_NO_CHIPSELECT,
.mode = SPI_MODE_0,
},
};
static struct i2c_board_info tx28_stk5v3_i2c_boardinfo[] __initdata = {
{
I2C_BOARD_INFO("ds1339", 0x68),
},
};
static struct mxs_mmc_platform_data tx28_mmc0_pdata __initdata = {
.wp_gpio = -EINVAL,
.flags = SLOTF_4_BIT_CAPABLE,
};
static void __init tx28_stk5v3_init(void)
{
mx28_soc_init();
mxs_iomux_setup_multiple_pads(tx28_stk5v3_pads,
ARRAY_SIZE(tx28_stk5v3_pads));
mx28_add_duart(); /* UART1 */
mx28_add_auart(1); /* UART2 */
tx28_add_fec0();
/* spi via ssp will be added when available */
spi_register_board_info(tx28_spi_board_info,
ARRAY_SIZE(tx28_spi_board_info));
gpio_led_register_device(0, &tx28_stk5v3_led_data);
mx28_add_mxs_i2c(0);
i2c_register_board_info(0, tx28_stk5v3_i2c_boardinfo,
ARRAY_SIZE(tx28_stk5v3_i2c_boardinfo));
mx28_add_mxs_mmc(0, &tx28_mmc0_pdata);
mx28_add_rtc_stmp3xxx();
}
static void __init tx28_timer_init(void)
{
mx28_clocks_init();
}
static struct sys_timer tx28_timer = {
.init = tx28_timer_init,
};
MACHINE_START(TX28, "Ka-Ro electronics TX28 module")
.map_io = mx28_map_io,
.init_irq = mx28_init_irq,
.timer = &tx28_timer,
.init_machine = tx28_stk5v3_init,
.restart = mxs_restart,
MACHINE_END
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