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alistair23-linux/arch/arm/mach-mxs/mach-mx23evk.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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5.8 KiB
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/*
* 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 as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include <mach/common.h>
#include <mach/iomux-mx23.h>
#include "devices-mx23.h"
#define MX23EVK_LCD_ENABLE MXS_GPIO_NR(1, 18)
#define MX23EVK_BL_ENABLE MXS_GPIO_NR(1, 28)
#define MX23EVK_MMC0_WRITE_PROTECT MXS_GPIO_NR(1, 30)
#define MX23EVK_MMC0_SLOT_POWER MXS_GPIO_NR(1, 29)
static const iomux_cfg_t mx23evk_pads[] __initconst = {
/* duart */
MX23_PAD_PWM0__DUART_RX | MXS_PAD_CTRL,
MX23_PAD_PWM1__DUART_TX | MXS_PAD_CTRL,
/* auart */
MX23_PAD_AUART1_RX__AUART1_RX | MXS_PAD_CTRL,
MX23_PAD_AUART1_TX__AUART1_TX | MXS_PAD_CTRL,
MX23_PAD_AUART1_CTS__AUART1_CTS | MXS_PAD_CTRL,
MX23_PAD_AUART1_RTS__AUART1_RTS | MXS_PAD_CTRL,
/* mxsfb (lcdif) */
MX23_PAD_LCD_D00__LCD_D00 | MXS_PAD_CTRL,
MX23_PAD_LCD_D01__LCD_D01 | MXS_PAD_CTRL,
MX23_PAD_LCD_D02__LCD_D02 | MXS_PAD_CTRL,
MX23_PAD_LCD_D03__LCD_D03 | MXS_PAD_CTRL,
MX23_PAD_LCD_D04__LCD_D04 | MXS_PAD_CTRL,
MX23_PAD_LCD_D05__LCD_D05 | MXS_PAD_CTRL,
MX23_PAD_LCD_D06__LCD_D06 | MXS_PAD_CTRL,
MX23_PAD_LCD_D07__LCD_D07 | MXS_PAD_CTRL,
MX23_PAD_LCD_D08__LCD_D08 | MXS_PAD_CTRL,
MX23_PAD_LCD_D09__LCD_D09 | MXS_PAD_CTRL,
MX23_PAD_LCD_D10__LCD_D10 | MXS_PAD_CTRL,
MX23_PAD_LCD_D11__LCD_D11 | MXS_PAD_CTRL,
MX23_PAD_LCD_D12__LCD_D12 | MXS_PAD_CTRL,
MX23_PAD_LCD_D13__LCD_D13 | MXS_PAD_CTRL,
MX23_PAD_LCD_D14__LCD_D14 | MXS_PAD_CTRL,
MX23_PAD_LCD_D15__LCD_D15 | MXS_PAD_CTRL,
MX23_PAD_LCD_D16__LCD_D16 | MXS_PAD_CTRL,
MX23_PAD_LCD_D17__LCD_D17 | MXS_PAD_CTRL,
MX23_PAD_GPMI_D08__LCD_D18 | MXS_PAD_CTRL,
MX23_PAD_GPMI_D09__LCD_D19 | MXS_PAD_CTRL,
MX23_PAD_GPMI_D10__LCD_D20 | MXS_PAD_CTRL,
MX23_PAD_GPMI_D11__LCD_D21 | MXS_PAD_CTRL,
MX23_PAD_GPMI_D12__LCD_D22 | MXS_PAD_CTRL,
MX23_PAD_GPMI_D13__LCD_D23 | MXS_PAD_CTRL,
MX23_PAD_LCD_VSYNC__LCD_VSYNC | MXS_PAD_CTRL,
MX23_PAD_LCD_HSYNC__LCD_HSYNC | MXS_PAD_CTRL,
MX23_PAD_LCD_DOTCK__LCD_DOTCK | MXS_PAD_CTRL,
MX23_PAD_LCD_ENABLE__LCD_ENABLE | MXS_PAD_CTRL,
/* LCD panel enable */
MX23_PAD_LCD_RESET__GPIO_1_18 | MXS_PAD_CTRL,
/* backlight control */
MX23_PAD_PWM2__GPIO_1_28 | MXS_PAD_CTRL,
/* mmc */
MX23_PAD_SSP1_DATA0__SSP1_DATA0 |
(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
MX23_PAD_SSP1_DATA1__SSP1_DATA1 |
(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
MX23_PAD_SSP1_DATA2__SSP1_DATA2 |
(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
MX23_PAD_SSP1_DATA3__SSP1_DATA3 |
(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
MX23_PAD_GPMI_D08__SSP1_DATA4 |
(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
MX23_PAD_GPMI_D09__SSP1_DATA5 |
(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
MX23_PAD_GPMI_D10__SSP1_DATA6 |
(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
MX23_PAD_GPMI_D11__SSP1_DATA7 |
(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
MX23_PAD_SSP1_CMD__SSP1_CMD |
(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
MX23_PAD_SSP1_DETECT__SSP1_DETECT |
(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
MX23_PAD_SSP1_SCK__SSP1_SCK |
(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
/* write protect */
MX23_PAD_PWM4__GPIO_1_30 |
(MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
/* slot power enable */
MX23_PAD_PWM3__GPIO_1_29 |
(MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
};
/* mxsfb (lcdif) */
static struct fb_videomode mx23evk_video_modes[] = {
{
.name = "Samsung-LMS430HF02",
.refresh = 60,
.xres = 480,
.yres = 272,
.pixclock = 108096, /* picosecond (9.2 MHz) */
.left_margin = 15,
.right_margin = 8,
.upper_margin = 12,
.lower_margin = 4,
.hsync_len = 1,
.vsync_len = 1,
.sync = FB_SYNC_DATA_ENABLE_HIGH_ACT |
FB_SYNC_DOTCLK_FAILING_ACT,
},
};
static const struct mxsfb_platform_data mx23evk_mxsfb_pdata __initconst = {
.mode_list = mx23evk_video_modes,
.mode_count = ARRAY_SIZE(mx23evk_video_modes),
.default_bpp = 32,
.ld_intf_width = STMLCDIF_24BIT,
};
static struct mxs_mmc_platform_data mx23evk_mmc_pdata __initdata = {
.wp_gpio = MX23EVK_MMC0_WRITE_PROTECT,
.flags = SLOTF_8_BIT_CAPABLE,
};
static void __init mx23evk_init(void)
{
int ret;
mx23_soc_init();
mxs_iomux_setup_multiple_pads(mx23evk_pads, ARRAY_SIZE(mx23evk_pads));
mx23_add_duart();
mx23_add_auart0();
/* power on mmc slot by writing 0 to the gpio */
ret = gpio_request_one(MX23EVK_MMC0_SLOT_POWER, GPIOF_OUT_INIT_LOW,
"mmc0-slot-power");
if (ret)
pr_warn("failed to request gpio mmc0-slot-power: %d\n", ret);
mx23_add_mxs_mmc(0, &mx23evk_mmc_pdata);
ret = gpio_request_one(MX23EVK_LCD_ENABLE, GPIOF_DIR_OUT, "lcd-enable");
if (ret)
pr_warn("failed to request gpio lcd-enable: %d\n", ret);
else
gpio_set_value(MX23EVK_LCD_ENABLE, 1);
ret = gpio_request_one(MX23EVK_BL_ENABLE, GPIOF_DIR_OUT, "bl-enable");
if (ret)
pr_warn("failed to request gpio bl-enable: %d\n", ret);
else
gpio_set_value(MX23EVK_BL_ENABLE, 1);
mx23_add_mxsfb(&mx23evk_mxsfb_pdata);
mx23_add_rtc_stmp3xxx();
}
static void __init mx23evk_timer_init(void)
{
mx23_clocks_init();
}
static struct sys_timer mx23evk_timer = {
.init = mx23evk_timer_init,
};
MACHINE_START(MX23EVK, "Freescale MX23 EVK")
/* Maintainer: Freescale Semiconductor, Inc. */
.map_io = mx23_map_io,
.init_irq = mx23_init_irq,
.timer = &mx23evk_timer,
.init_machine = mx23evk_init,
.restart = mxs_restart,
MACHINE_END
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