release/src-rt-6.x.4708/linux/linux-2.6.36/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/i2c.h>
  29 #include <mach/iomux-mx1.h>
  30 #include <mach/irqs.h>
  31
  32 #include "devices-imx1.h"
  33 #include "devices.h"
  34
  35 static int mx1ads_pins[] = {
  36         /* UART1 */
  37         PC9_PF_UART1_CTS,
  38         PC10_PF_UART1_RTS,
  39         PC11_PF_UART1_TXD,
  40         PC12_PF_UART1_RXD,
  41         /* UART2 */
  42         PB28_PF_UART2_CTS,
  43         PB29_PF_UART2_RTS,
  44         PB30_PF_UART2_TXD,
  45         PB31_PF_UART2_RXD,
  46         /* I2C */
  47         PA15_PF_I2C_SDA,
  48         PA16_PF_I2C_SCL,
  49         /* SPI */
  50         PC13_PF_SPI1_SPI_RDY,
  51         PC14_PF_SPI1_SCLK,
  52         PC15_PF_SPI1_SS,
  53         PC16_PF_SPI1_MISO,
  54         PC17_PF_SPI1_MOSI,
  55 };
  56
  57 /*
  58  * UARTs platform data
  59  */
  60
  61 static const struct imxuart_platform_data uart0_pdata __initconst = {
  62         .flags = IMXUART_HAVE_RTSCTS,
  63 };
  64
  65 static const struct imxuart_platform_data uart1_pdata __initconst = {
  66         .flags = IMXUART_HAVE_RTSCTS,
  67 };
  68
  69 /*
  70  * Physmap flash
  71  */
  72
  73 static struct physmap_flash_data mx1ads_flash_data = {
  74         .width          = 4,            /* bankwidth in bytes */
  75 };
  76
  77 static struct resource flash_resource = {
  78         .start  = MX1_CS0_PHYS,
  79         .end    = MX1_CS0_PHYS + SZ_32M - 1,
  80         .flags  = IORESOURCE_MEM,
  81 };
  82
  83 static struct platform_device flash_device = {
  84         .name   = "physmap-flash",
  85         .id     = 0,
  86         .resource = &flash_resource,
  87         .num_resources = 1,
  88 };
  89
  90 /*
  91  * I2C
  92  */
  93 static struct pcf857x_platform_data pcf857x_data[] = {
  94         {
  95                 .gpio_base = 4 * 32,
  96         }, {
  97                 .gpio_base = 4 * 32 + 16,
  98         }
  99 };
 100
 101 static const struct imxi2c_platform_data mx1ads_i2c_data __initconst = {
 102         .bitrate = 100000,
 103 };
 104
 105 static struct i2c_board_info mx1ads_i2c_devices[] = {
 106         {
 107                 I2C_BOARD_INFO("pcf8575", 0x22),
 108                 .platform_data = &pcf857x_data[0],
 109         }, {
 110                 I2C_BOARD_INFO("pcf8575", 0x24),
 111                 .platform_data = &pcf857x_data[1],
 112         },
 113 };
 114
 115 /*
 116  * Board init
 117  */
 118 static void __init mx1ads_init(void)
 119 {
 120         mxc_gpio_setup_multiple_pins(mx1ads_pins,
 121                 ARRAY_SIZE(mx1ads_pins), "mx1ads");
 122
 123         /* UART */
 124         imx1_add_imx_uart0(&uart0_pdata);
 125         imx1_add_imx_uart1(&uart1_pdata);
 126
 127         /* Physmap flash */
 128         mxc_register_device(&flash_device, &mx1ads_flash_data);
 129
 130         /* I2C */
 131         i2c_register_board_info(0, mx1ads_i2c_devices,
 132                                 ARRAY_SIZE(mx1ads_i2c_devices));
 133
 134         imx1_add_i2c_imx(&mx1ads_i2c_data);
 135 }
 136
 137 static void __init mx1ads_timer_init(void)
 138 {
 139         mx1_clocks_init(32000);
 140 }
 141
 142 struct sys_timer mx1ads_timer = {
 143         .init   = mx1ads_timer_init,
 144 };
 145
 146 MACHINE_START(MX1ADS, "Freescale MX1ADS")
 147         /* Maintainer: Sascha Hauer, Pengutronix */
 148         .phys_io        = MX1_IO_BASE_ADDR,
 149         .io_pg_offst    = (MX1_IO_BASE_ADDR_VIRT >> 18) & 0xfffc,
 150         .boot_params    = MX1_PHYS_OFFSET + 0x100,
 151         .map_io         = mx1_map_io,
 152         .init_irq       = mx1_init_irq,
 153         .timer          = &mx1ads_timer,
 154         .init_machine   = mx1ads_init,
 155 MACHINE_END
 156
 157 MACHINE_START(MXLADS, "Freescale MXLADS")
 158         .phys_io        = MX1_IO_BASE_ADDR,
 159         .io_pg_offst    = (MX1_IO_BASE_ADDR_VIRT >> 18) & 0xfffc,
 160         .boot_params    = MX1_PHYS_OFFSET + 0x100,
 161         .map_io         = mx1_map_io,
 162         .init_irq       = mx1_init_irq,
 163         .timer          = &mx1ads_timer,
 164         .init_machine   = mx1ads_init,
 165 MACHINE_END