PageRenderTime 48ms CodeModel.GetById 13ms app.highlight 28ms RepoModel.GetById 1ms app.codeStats 0ms

/arch/arm/mach-mxs/mach-mx23evk.c

https://github.com/AICP/kernel_asus_grouper
C | 187 lines | 141 code | 22 blank | 24 comment | 3 complexity | f22a101e6a0b80de5ea24b59a46e4991 MD5 | raw file
  1/*
  2 * Copyright 2010 Freescale Semiconductor, Inc. All Rights Reserved.
  3 *
  4 * This program is free software; you can redistribute it and/or modify
  5 * it under the terms of the GNU General Public License as published by
  6 * the Free Software Foundation; either version 2 of the License, or
  7 * (at your option) any later version.
  8 *
  9 * This program is distributed in the hope that it will be useful,
 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 12 * GNU General Public License for more details.
 13 */
 14
 15#include <linux/delay.h>
 16#include <linux/platform_device.h>
 17#include <linux/gpio.h>
 18#include <linux/irq.h>
 19
 20#include <asm/mach-types.h>
 21#include <asm/mach/arch.h>
 22#include <asm/mach/time.h>
 23
 24#include <mach/common.h>
 25#include <mach/iomux-mx23.h>
 26
 27#include "devices-mx23.h"
 28
 29#define MX23EVK_LCD_ENABLE	MXS_GPIO_NR(1, 18)
 30#define MX23EVK_BL_ENABLE	MXS_GPIO_NR(1, 28)
 31#define MX23EVK_MMC0_WRITE_PROTECT	MXS_GPIO_NR(1, 30)
 32#define MX23EVK_MMC0_SLOT_POWER		MXS_GPIO_NR(1, 29)
 33
 34static const iomux_cfg_t mx23evk_pads[] __initconst = {
 35	/* duart */
 36	MX23_PAD_PWM0__DUART_RX | MXS_PAD_CTRL,
 37	MX23_PAD_PWM1__DUART_TX | MXS_PAD_CTRL,
 38
 39	/* auart */
 40	MX23_PAD_AUART1_RX__AUART1_RX | MXS_PAD_CTRL,
 41	MX23_PAD_AUART1_TX__AUART1_TX | MXS_PAD_CTRL,
 42	MX23_PAD_AUART1_CTS__AUART1_CTS | MXS_PAD_CTRL,
 43	MX23_PAD_AUART1_RTS__AUART1_RTS | MXS_PAD_CTRL,
 44
 45	/* mxsfb (lcdif) */
 46	MX23_PAD_LCD_D00__LCD_D00 | MXS_PAD_CTRL,
 47	MX23_PAD_LCD_D01__LCD_D01 | MXS_PAD_CTRL,
 48	MX23_PAD_LCD_D02__LCD_D02 | MXS_PAD_CTRL,
 49	MX23_PAD_LCD_D03__LCD_D03 | MXS_PAD_CTRL,
 50	MX23_PAD_LCD_D04__LCD_D04 | MXS_PAD_CTRL,
 51	MX23_PAD_LCD_D05__LCD_D05 | MXS_PAD_CTRL,
 52	MX23_PAD_LCD_D06__LCD_D06 | MXS_PAD_CTRL,
 53	MX23_PAD_LCD_D07__LCD_D07 | MXS_PAD_CTRL,
 54	MX23_PAD_LCD_D08__LCD_D08 | MXS_PAD_CTRL,
 55	MX23_PAD_LCD_D09__LCD_D09 | MXS_PAD_CTRL,
 56	MX23_PAD_LCD_D10__LCD_D10 | MXS_PAD_CTRL,
 57	MX23_PAD_LCD_D11__LCD_D11 | MXS_PAD_CTRL,
 58	MX23_PAD_LCD_D12__LCD_D12 | MXS_PAD_CTRL,
 59	MX23_PAD_LCD_D13__LCD_D13 | MXS_PAD_CTRL,
 60	MX23_PAD_LCD_D14__LCD_D14 | MXS_PAD_CTRL,
 61	MX23_PAD_LCD_D15__LCD_D15 | MXS_PAD_CTRL,
 62	MX23_PAD_LCD_D16__LCD_D16 | MXS_PAD_CTRL,
 63	MX23_PAD_LCD_D17__LCD_D17 | MXS_PAD_CTRL,
 64	MX23_PAD_GPMI_D08__LCD_D18 | MXS_PAD_CTRL,
 65	MX23_PAD_GPMI_D09__LCD_D19 | MXS_PAD_CTRL,
 66	MX23_PAD_GPMI_D10__LCD_D20 | MXS_PAD_CTRL,
 67	MX23_PAD_GPMI_D11__LCD_D21 | MXS_PAD_CTRL,
 68	MX23_PAD_GPMI_D12__LCD_D22 | MXS_PAD_CTRL,
 69	MX23_PAD_GPMI_D13__LCD_D23 | MXS_PAD_CTRL,
 70	MX23_PAD_LCD_VSYNC__LCD_VSYNC | MXS_PAD_CTRL,
 71	MX23_PAD_LCD_HSYNC__LCD_HSYNC | MXS_PAD_CTRL,
 72	MX23_PAD_LCD_DOTCK__LCD_DOTCK | MXS_PAD_CTRL,
 73	MX23_PAD_LCD_ENABLE__LCD_ENABLE | MXS_PAD_CTRL,
 74	/* LCD panel enable */
 75	MX23_PAD_LCD_RESET__GPIO_1_18 | MXS_PAD_CTRL,
 76	/* backlight control */
 77	MX23_PAD_PWM2__GPIO_1_28 | MXS_PAD_CTRL,
 78
 79	/* mmc */
 80	MX23_PAD_SSP1_DATA0__SSP1_DATA0 |
 81		(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 82	MX23_PAD_SSP1_DATA1__SSP1_DATA1 |
 83		(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 84	MX23_PAD_SSP1_DATA2__SSP1_DATA2 |
 85		(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 86	MX23_PAD_SSP1_DATA3__SSP1_DATA3 |
 87		(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 88	MX23_PAD_GPMI_D08__SSP1_DATA4 |
 89		(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 90	MX23_PAD_GPMI_D09__SSP1_DATA5 |
 91		(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 92	MX23_PAD_GPMI_D10__SSP1_DATA6 |
 93		(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 94	MX23_PAD_GPMI_D11__SSP1_DATA7 |
 95		(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 96	MX23_PAD_SSP1_CMD__SSP1_CMD |
 97		(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 98	MX23_PAD_SSP1_DETECT__SSP1_DETECT |
 99		(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
100	MX23_PAD_SSP1_SCK__SSP1_SCK |
101		(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
102	/* write protect */
103	MX23_PAD_PWM4__GPIO_1_30 |
104		(MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
105	/* slot power enable */
106	MX23_PAD_PWM3__GPIO_1_29 |
107		(MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
108};
109
110/* mxsfb (lcdif) */
111static struct fb_videomode mx23evk_video_modes[] = {
112	{
113		.name		= "Samsung-LMS430HF02",
114		.refresh	= 60,
115		.xres		= 480,
116		.yres		= 272,
117		.pixclock	= 108096, /* picosecond (9.2 MHz) */
118		.left_margin	= 15,
119		.right_margin	= 8,
120		.upper_margin	= 12,
121		.lower_margin	= 4,
122		.hsync_len	= 1,
123		.vsync_len	= 1,
124		.sync		= FB_SYNC_DATA_ENABLE_HIGH_ACT |
125				  FB_SYNC_DOTCLK_FAILING_ACT,
126	},
127};
128
129static const struct mxsfb_platform_data mx23evk_mxsfb_pdata __initconst = {
130	.mode_list	= mx23evk_video_modes,
131	.mode_count	= ARRAY_SIZE(mx23evk_video_modes),
132	.default_bpp	= 32,
133	.ld_intf_width	= STMLCDIF_24BIT,
134};
135
136static struct mxs_mmc_platform_data mx23evk_mmc_pdata __initdata = {
137	.wp_gpio = MX23EVK_MMC0_WRITE_PROTECT,
138	.flags = SLOTF_8_BIT_CAPABLE,
139};
140
141static void __init mx23evk_init(void)
142{
143	int ret;
144
145	mxs_iomux_setup_multiple_pads(mx23evk_pads, ARRAY_SIZE(mx23evk_pads));
146
147	mx23_add_duart();
148	mx23_add_auart0();
149
150	/* power on mmc slot by writing 0 to the gpio */
151	ret = gpio_request_one(MX23EVK_MMC0_SLOT_POWER, GPIOF_OUT_INIT_LOW,
152			       "mmc0-slot-power");
153	if (ret)
154		pr_warn("failed to request gpio mmc0-slot-power: %d\n", ret);
155	mx23_add_mxs_mmc(0, &mx23evk_mmc_pdata);
156
157	ret = gpio_request_one(MX23EVK_LCD_ENABLE, GPIOF_DIR_OUT, "lcd-enable");
158	if (ret)
159		pr_warn("failed to request gpio lcd-enable: %d\n", ret);
160	else
161		gpio_set_value(MX23EVK_LCD_ENABLE, 1);
162
163	ret = gpio_request_one(MX23EVK_BL_ENABLE, GPIOF_DIR_OUT, "bl-enable");
164	if (ret)
165		pr_warn("failed to request gpio bl-enable: %d\n", ret);
166	else
167		gpio_set_value(MX23EVK_BL_ENABLE, 1);
168
169	mx23_add_mxsfb(&mx23evk_mxsfb_pdata);
170}
171
172static void __init mx23evk_timer_init(void)
173{
174	mx23_clocks_init();
175}
176
177static struct sys_timer mx23evk_timer = {
178	.init	= mx23evk_timer_init,
179};
180
181MACHINE_START(MX23EVK, "Freescale MX23 EVK")
182	/* Maintainer: Freescale Semiconductor, Inc. */
183	.map_io		= mx23_map_io,
184	.init_irq	= mx23_init_irq,
185	.init_machine	= mx23evk_init,
186	.timer		= &mx23evk_timer,
187MACHINE_END