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

   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
  32 static const iomux_cfg_t mx23evk_pads[] __initconst = {
  33         /* duart */
  34         MX23_PAD_PWM0__DUART_RX | MXS_PAD_CTRL,
  35         MX23_PAD_PWM1__DUART_TX | MXS_PAD_CTRL,
  36
  37         /* auart */
  38         MX23_PAD_AUART1_RX__AUART1_RX | MXS_PAD_CTRL,
  39         MX23_PAD_AUART1_TX__AUART1_TX | MXS_PAD_CTRL,
  40         MX23_PAD_AUART1_CTS__AUART1_CTS | MXS_PAD_CTRL,
  41         MX23_PAD_AUART1_RTS__AUART1_RTS | MXS_PAD_CTRL,
  42
  43         /* mxsfb (lcdif) */
  44         MX23_PAD_LCD_D00__LCD_D00 | MXS_PAD_CTRL,
  45         MX23_PAD_LCD_D01__LCD_D01 | MXS_PAD_CTRL,
  46         MX23_PAD_LCD_D02__LCD_D02 | MXS_PAD_CTRL,
  47         MX23_PAD_LCD_D03__LCD_D03 | MXS_PAD_CTRL,
  48         MX23_PAD_LCD_D04__LCD_D04 | MXS_PAD_CTRL,
  49         MX23_PAD_LCD_D05__LCD_D05 | MXS_PAD_CTRL,
  50         MX23_PAD_LCD_D06__LCD_D06 | MXS_PAD_CTRL,
  51         MX23_PAD_LCD_D07__LCD_D07 | MXS_PAD_CTRL,
  52         MX23_PAD_LCD_D08__LCD_D08 | MXS_PAD_CTRL,
  53         MX23_PAD_LCD_D09__LCD_D09 | MXS_PAD_CTRL,
  54         MX23_PAD_LCD_D10__LCD_D10 | MXS_PAD_CTRL,
  55         MX23_PAD_LCD_D11__LCD_D11 | MXS_PAD_CTRL,
  56         MX23_PAD_LCD_D12__LCD_D12 | MXS_PAD_CTRL,
  57         MX23_PAD_LCD_D13__LCD_D13 | MXS_PAD_CTRL,
  58         MX23_PAD_LCD_D14__LCD_D14 | MXS_PAD_CTRL,
  59         MX23_PAD_LCD_D15__LCD_D15 | MXS_PAD_CTRL,
  60         MX23_PAD_LCD_D16__LCD_D16 | MXS_PAD_CTRL,
  61         MX23_PAD_LCD_D17__LCD_D17 | MXS_PAD_CTRL,
  62         MX23_PAD_GPMI_D08__LCD_D18 | MXS_PAD_CTRL,
  63         MX23_PAD_GPMI_D09__LCD_D19 | MXS_PAD_CTRL,
  64         MX23_PAD_GPMI_D10__LCD_D20 | MXS_PAD_CTRL,
  65         MX23_PAD_GPMI_D11__LCD_D21 | MXS_PAD_CTRL,
  66         MX23_PAD_GPMI_D12__LCD_D22 | MXS_PAD_CTRL,
  67         MX23_PAD_GPMI_D13__LCD_D23 | MXS_PAD_CTRL,
  68         MX23_PAD_LCD_VSYNC__LCD_VSYNC | MXS_PAD_CTRL,
  69         MX23_PAD_LCD_HSYNC__LCD_HSYNC | MXS_PAD_CTRL,
  70         MX23_PAD_LCD_DOTCK__LCD_DOTCK | MXS_PAD_CTRL,
  71         MX23_PAD_LCD_ENABLE__LCD_ENABLE | MXS_PAD_CTRL,
  72         /* LCD panel enable */
  73         MX23_PAD_LCD_RESET__GPIO_1_18 | MXS_PAD_CTRL,
  74         /* backlight control */
  75         MX23_PAD_PWM2__GPIO_1_28 | MXS_PAD_CTRL,
  76 };
  77
  78 /* mxsfb (lcdif) */
  79 static struct fb_videomode mx23evk_video_modes[] = {
  80         {
  81                 .name           = "Samsung-LMS430HF02",
  82                 .refresh        = 60,
  83                 .xres           = 480,
  84                 .yres           = 272,
  85                 .pixclock       = 108096, /* picosecond (9.2 MHz) */
  86                 .left_margin    = 15,
  87                 .right_margin   = 8,
  88                 .upper_margin   = 12,
  89                 .lower_margin   = 4,
  90                 .hsync_len      = 1,
  91                 .vsync_len      = 1,
  92                 .sync           = FB_SYNC_DATA_ENABLE_HIGH_ACT |
  93                                   FB_SYNC_DOTCLK_FAILING_ACT,
  94         },
  95 };
  96
  97 static const struct mxsfb_platform_data mx23evk_mxsfb_pdata __initconst = {
  98         .mode_list      = mx23evk_video_modes,
  99         .mode_count     = ARRAY_SIZE(mx23evk_video_modes),
 100         .default_bpp    = 32,
 101         .ld_intf_width  = STMLCDIF_24BIT,
 102 };
 103
 104 static void __init mx23evk_init(void)
 105 {
 106         int ret;
 107
 108         mxs_iomux_setup_multiple_pads(mx23evk_pads, ARRAY_SIZE(mx23evk_pads));
 109
 110         mx23_add_duart();
 111         mx23_add_auart0();
 112
 113         ret = gpio_request_one(MX23EVK_LCD_ENABLE, GPIOF_DIR_OUT, "lcd-enable");
 114         if (ret)
 115                 pr_warn("failed to request gpio lcd-enable: %d\n", ret);
 116         else
 117                 gpio_set_value(MX23EVK_LCD_ENABLE, 1);
 118
 119         ret = gpio_request_one(MX23EVK_BL_ENABLE, GPIOF_DIR_OUT, "bl-enable");
 120         if (ret)
 121                 pr_warn("failed to request gpio bl-enable: %d\n", ret);
 122         else
 123                 gpio_set_value(MX23EVK_BL_ENABLE, 1);
 124
 125         mx23_add_mxsfb(&mx23evk_mxsfb_pdata);
 126 }
 127
 128 static void __init mx23evk_timer_init(void)
 129 {
 130         mx23_clocks_init();
 131 }
 132
 133 static struct sys_timer mx23evk_timer = {
 134         .init   = mx23evk_timer_init,
 135 };
 136
 137 MACHINE_START(MX23EVK, "Freescale MX23 EVK")
 138         /* Maintainer: Freescale Semiconductor, Inc. */
 139         .map_io         = mx23_map_io,
 140         .init_irq       = mx23_init_irq,
 141         .init_machine   = mx23evk_init,
 142         .timer          = &mx23evk_timer,
 143 MACHINE_END