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 #include <mach/iomux-mx1.h>
  29 #include <mach/irqs.h>
  30
  31 #include "devices-imx1.h"
  32
  33 static const int mx1ads_pins[] __initconst = {
  34         /* UART1 */
  35         PC9_PF_UART1_CTS,
  36         PC10_PF_UART1_RTS,
  37         PC11_PF_UART1_TXD,
  38         PC12_PF_UART1_RXD,
  39         /* UART2 */
  40         PB28_PF_UART2_CTS,
  41         PB29_PF_UART2_RTS,
  42         PB30_PF_UART2_TXD,
  43         PB31_PF_UART2_RXD,
  44         /* I2C */
  45         PA15_PF_I2C_SDA,
  46         PA16_PF_I2C_SCL,
  47         /* SPI */
  48         PC13_PF_SPI1_SPI_RDY,
  49         PC14_PF_SPI1_SCLK,
  50         PC15_PF_SPI1_SS,
  51         PC16_PF_SPI1_MISO,
  52         PC17_PF_SPI1_MOSI,
  53 };
  54
  55 /*
  56  * UARTs platform data
  57  */
  58
  59 static const struct imxuart_platform_data uart0_pdata __initconst = {
  60         .flags = IMXUART_HAVE_RTSCTS,
  61 };
  62
  63 static const struct imxuart_platform_data uart1_pdata __initconst = {
  64         .flags = IMXUART_HAVE_RTSCTS,
  65 };
  66
  67 /*
  68  * Physmap flash
  69  */
  70
  71 static const struct physmap_flash_data mx1ads_flash_data __initconst = {
  72         .width          = 4,            /* bankwidth in bytes */
  73 };
  74
  75 static const struct resource flash_resource __initconst = {
  76         .start  = MX1_CS0_PHYS,
  77         .end    = MX1_CS0_PHYS + SZ_32M - 1,
  78         .flags  = IORESOURCE_MEM,
  79 };
  80
  81 /*
  82  * I2C
  83  */
  84 static struct pcf857x_platform_data pcf857x_data[] = {
  85         {
  86                 .gpio_base = 4 * 32,
  87         }, {
  88                 .gpio_base = 4 * 32 + 16,
  89         }
  90 };
  91
  92 static const struct imxi2c_platform_data mx1ads_i2c_data __initconst = {
  93         .bitrate = 100000,
  94 };
  95
  96 static struct i2c_board_info mx1ads_i2c_devices[] = {
  97         {
  98                 I2C_BOARD_INFO("pcf8575", 0x22),
  99                 .platform_data = &pcf857x_data[0],
 100         }, {
 101                 I2C_BOARD_INFO("pcf8575", 0x24),
 102                 .platform_data = &pcf857x_data[1],
 103         },
 104 };
 105
 106 /*
 107  * Board init
 108  */
 109 static void __init mx1ads_init(void)
 110 {
 111         imx1_soc_init();
 112
 113         mxc_gpio_setup_multiple_pins(mx1ads_pins,
 114                 ARRAY_SIZE(mx1ads_pins), "mx1ads");
 115
 116         /* UART */
 117         imx1_add_imx_uart0(&uart0_pdata);
 118         imx1_add_imx_uart1(&uart1_pdata);
 119
 120         /* Physmap flash */
 121         platform_device_register_resndata(NULL, "physmap-flash", 0,
 122                         &flash_resource, 1,
 123                         &mx1ads_flash_data, sizeof(mx1ads_flash_data));
 124
 125         /* I2C */
 126         i2c_register_board_info(0, mx1ads_i2c_devices,
 127                                 ARRAY_SIZE(mx1ads_i2c_devices));
 128
 129         imx1_add_imx_i2c(&mx1ads_i2c_data);
 130 }
 131
 132 static void __init mx1ads_timer_init(void)
 133 {
 134         mx1_clocks_init(32000);
 135 }
 136
 137 struct sys_timer mx1ads_timer = {
 138         .init   = mx1ads_timer_init,
 139 };
 140
 141 MACHINE_START(MX1ADS, "Freescale MX1ADS")
 142         /* Maintainer: Sascha Hauer, Pengutronix */
 143         .atag_offset = 0x100,
 144         .map_io = mx1_map_io,
 145         .init_early = imx1_init_early,
 146         .init_irq = mx1_init_irq,
 147         .handle_irq = imx1_handle_irq,
 148         .timer = &mx1ads_timer,
 149         .init_machine = mx1ads_init,
 150         .restart        = mxc_restart,
 151 MACHINE_END
 152
 153 MACHINE_START(MXLADS, "Freescale MXLADS")
 154         .atag_offset = 0x100,
 155         .map_io = mx1_map_io,
 156         .init_early = imx1_init_early,
 157         .init_irq = mx1_init_irq,
 158         .handle_irq = imx1_handle_irq,
 159         .timer = &mx1ads_timer,
 160         .init_machine = mx1ads_init,
 161         .restart        = mxc_restart,
 162 MACHINE_END