arch/arm/mach-imx/mach-mx1ads.c

   1 /*
   2  * arch/arm/mach-imx/mach-mx1ads.c
   3  *
   4  * Initially based on:
   5  *      linux-2.6.7-imx/arch/arm/mach-imx/scb9328.c
   6  *      Copyright (c) 2004 Sascha Hauer <sascha@saschahauer.de>
   7  *
   8  * 2004 (c) MontaVista Software, Inc.
   9  *
  10  * This file is licensed under the terms of the GNU General Public
  11  * License version 2. This program is licensed "as is" without any
  12  * warranty of any kind, whether express or implied.
  13  */
  14
  15 #include <linux/i2c.h>
  16 #include <linux/i2c/pcf857x.h>
  17 #include <linux/init.h>
  18 #include <linux/kernel.h>
  19 #include <linux/platform_device.h>
  20 #include <linux/mtd/physmap.h>
  21
  22 #include <asm/mach-types.h>
  23 #include <asm/mach/arch.h>
  24 #include <asm/mach/time.h>
  25
  26 #include <mach/common.h>
  27 #include <mach/hardware.h>
  28
  29 #include "devices-imx1.h"
  30 #include "iomux-mx1.h"
  31
  32 static const int mx1ads_pins[] __initconst = {
  33         /* UART1 */
  34         PC9_PF_UART1_CTS,
  35         PC10_PF_UART1_RTS,
  36         PC11_PF_UART1_TXD,
  37         PC12_PF_UART1_RXD,
  38         /* UART2 */
  39         PB28_PF_UART2_CTS,
  40         PB29_PF_UART2_RTS,
  41         PB30_PF_UART2_TXD,
  42         PB31_PF_UART2_RXD,
  43         /* I2C */
  44         PA15_PF_I2C_SDA,
  45         PA16_PF_I2C_SCL,
  46         /* SPI */
  47         PC13_PF_SPI1_SPI_RDY,
  48         PC14_PF_SPI1_SCLK,
  49         PC15_PF_SPI1_SS,
  50         PC16_PF_SPI1_MISO,
  51         PC17_PF_SPI1_MOSI,
  52 };
  53
  54 /*
  55  * UARTs platform data
  56  */
  57
  58 static const struct imxuart_platform_data uart0_pdata __initconst = {
  59         .flags = IMXUART_HAVE_RTSCTS,
  60 };
  61
  62 static const struct imxuart_platform_data uart1_pdata __initconst = {
  63         .flags = IMXUART_HAVE_RTSCTS,
  64 };
  65
  66 /*
  67  * Physmap flash
  68  */
  69
  70 static const struct physmap_flash_data mx1ads_flash_data __initconst = {
  71         .width          = 4,            /* bankwidth in bytes */
  72 };
  73
  74 static const struct resource flash_resource __initconst = {
  75         .start  = MX1_CS0_PHYS,
  76         .end    = MX1_CS0_PHYS + SZ_32M - 1,
  77         .flags  = IORESOURCE_MEM,
  78 };
  79
  80 /*
  81  * I2C
  82  */
  83 static struct pcf857x_platform_data pcf857x_data[] = {
  84         {
  85                 .gpio_base = 4 * 32,
  86         }, {
  87                 .gpio_base = 4 * 32 + 16,
  88         }
  89 };
  90
  91 static const struct imxi2c_platform_data mx1ads_i2c_data __initconst = {
  92         .bitrate = 100000,
  93 };
  94
  95 static struct i2c_board_info mx1ads_i2c_devices[] = {
  96         {
  97                 I2C_BOARD_INFO("pcf8575", 0x22),
  98                 .platform_data = &pcf857x_data[0],
  99         }, {
 100                 I2C_BOARD_INFO("pcf8575", 0x24),
 101                 .platform_data = &pcf857x_data[1],
 102         },
 103 };
 104
 105 /*
 106  * Board init
 107  */
 108 static void __init mx1ads_init(void)
 109 {
 110         imx1_soc_init();
 111
 112         mxc_gpio_setup_multiple_pins(mx1ads_pins,
 113                 ARRAY_SIZE(mx1ads_pins), "mx1ads");
 114
 115         /* UART */
 116         imx1_add_imx_uart0(&uart0_pdata);
 117         imx1_add_imx_uart1(&uart1_pdata);
 118
 119         /* Physmap flash */
 120         platform_device_register_resndata(NULL, "physmap-flash", 0,
 121                         &flash_resource, 1,
 122                         &mx1ads_flash_data, sizeof(mx1ads_flash_data));
 123
 124         /* I2C */
 125         i2c_register_board_info(0, mx1ads_i2c_devices,
 126                                 ARRAY_SIZE(mx1ads_i2c_devices));
 127
 128         imx1_add_imx_i2c(&mx1ads_i2c_data);
 129 }
 130
 131 static void __init mx1ads_timer_init(void)
 132 {
 133         mx1_clocks_init(32000);
 134 }
 135
 136 static struct sys_timer mx1ads_timer = {
 137         .init   = mx1ads_timer_init,
 138 };
 139
 140 MACHINE_START(MX1ADS, "Freescale MX1ADS")
 141         /* Maintainer: Sascha Hauer, Pengutronix */
 142         .atag_offset = 0x100,
 143         .map_io = mx1_map_io,
 144         .init_early = imx1_init_early,
 145         .init_irq = mx1_init_irq,
 146         .handle_irq = imx1_handle_irq,
 147         .timer = &mx1ads_timer,
 148         .init_machine = mx1ads_init,
 149         .restart        = mxc_restart,
 150 MACHINE_END
 151
 152 MACHINE_START(MXLADS, "Freescale MXLADS")
 153         .atag_offset = 0x100,
 154         .map_io = mx1_map_io,
 155         .init_early = imx1_init_early,
 156         .init_irq = mx1_init_irq,
 157         .handle_irq = imx1_handle_irq,
 158         .timer = &mx1ads_timer,
 159         .init_machine = mx1ads_init,
 160         .restart        = mxc_restart,
 161 MACHINE_END