arch/arm/mach-mx1/mx1ads.c

   1 /*
   2  * arch/arm/mach-imx/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/kernel.h>
  16 #include <linux/init.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/mtd/physmap.h>
  19 #include <linux/i2c.h>
  20 #include <linux/i2c/pcf857x.h>
  21
  22 #include <asm/mach-types.h>
  23 #include <asm/mach/arch.h>
  24 #include <asm/mach/time.h>
  25
  26 #include <mach/hardware.h>
  27 #include <mach/common.h>
  28 #include <mach/imx-uart.h>
  29 #include <mach/irqs.h>
  30 #ifdef CONFIG_I2C_IMX
  31 #include <mach/i2c.h>
  32 #endif
  33 #include <mach/iomux.h>
  34 #include "devices.h"
  35
  36 /*
  37  * UARTs platform data
  38  */
  39 static int mxc_uart1_pins[] = {
  40         PC9_PF_UART1_CTS,
  41         PC10_PF_UART1_RTS,
  42         PC11_PF_UART1_TXD,
  43         PC12_PF_UART1_RXD,
  44 };
  45
  46 static int uart1_mxc_init(struct platform_device *pdev)
  47 {
  48         return mxc_gpio_setup_multiple_pins(mxc_uart1_pins,
  49                         ARRAY_SIZE(mxc_uart1_pins), "UART1");
  50 }
  51
  52 static int uart1_mxc_exit(struct platform_device *pdev)
  53 {
  54         mxc_gpio_release_multiple_pins(mxc_uart1_pins,
  55                         ARRAY_SIZE(mxc_uart1_pins));
  56         return 0;
  57 }
  58
  59 static int mxc_uart2_pins[] = {
  60         PB28_PF_UART2_CTS,
  61         PB29_PF_UART2_RTS,
  62         PB30_PF_UART2_TXD,
  63         PB31_PF_UART2_RXD,
  64 };
  65
  66 static int uart2_mxc_init(struct platform_device *pdev)
  67 {
  68         return mxc_gpio_setup_multiple_pins(mxc_uart2_pins,
  69                         ARRAY_SIZE(mxc_uart2_pins), "UART2");
  70 }
  71
  72 static int uart2_mxc_exit(struct platform_device *pdev)
  73 {
  74         mxc_gpio_release_multiple_pins(mxc_uart2_pins,
  75                         ARRAY_SIZE(mxc_uart2_pins));
  76         return 0;
  77 }
  78
  79 static struct imxuart_platform_data uart_pdata[] = {
  80         {
  81                 .init = uart1_mxc_init,
  82                 .exit = uart1_mxc_exit,
  83                 .flags = IMXUART_HAVE_RTSCTS,
  84         }, {
  85                 .init = uart2_mxc_init,
  86                 .exit = uart2_mxc_exit,
  87                 .flags = IMXUART_HAVE_RTSCTS,
  88         },
  89 };
  90
  91 /*
  92  * Physmap flash
  93  */
  94
  95 static struct physmap_flash_data mx1ads_flash_data = {
  96         .width          = 4,            /* bankwidth in bytes */
  97 };
  98
  99 static struct resource flash_resource = {
 100         .start  = IMX_CS0_PHYS,
 101         .end    = IMX_CS0_PHYS + SZ_32M - 1,
 102         .flags  = IORESOURCE_MEM,
 103 };
 104
 105 static struct platform_device flash_device = {
 106         .name   = "physmap-flash",
 107         .id     = 0,
 108         .resource = &flash_resource,
 109         .num_resources = 1,
 110 };
 111
 112 /*
 113  * I2C
 114  */
 115
 116 #ifdef CONFIG_I2C_IMX
 117 static int i2c_pins[] = {
 118         PA15_PF_I2C_SDA,
 119         PA16_PF_I2C_SCL,
 120 };
 121
 122 static int i2c_init(struct device *dev)
 123 {
 124         return mxc_gpio_setup_multiple_pins(i2c_pins,
 125                         ARRAY_SIZE(i2c_pins), "I2C");
 126 }
 127
 128 static void i2c_exit(struct device *dev)
 129 {
 130         mxc_gpio_release_multiple_pins(i2c_pins,
 131                         ARRAY_SIZE(i2c_pins));
 132 }
 133
 134 static struct pcf857x_platform_data pcf857x_data[] = {
 135         {
 136                 .gpio_base = 4 * 32,
 137         }, {
 138                 .gpio_base = 4 * 32 + 16,
 139         }
 140 };
 141
 142 static struct imxi2c_platform_data mx1ads_i2c_data = {
 143         .bitrate = 100000,
 144         .init = i2c_init,
 145         .exit = i2c_exit,
 146 };
 147
 148 static struct i2c_board_info mx1ads_i2c_devices[] = {
 149         {
 150                 I2C_BOARD_INFO("pcf857x", 0x22),
 151                 .type = "pcf8575",
 152                 .platform_data = &pcf857x_data[0],
 153         }, {
 154                 I2C_BOARD_INFO("pcf857x", 0x24),
 155                 .type = "pcf8575",
 156                 .platform_data = &pcf857x_data[1],
 157         },
 158 };
 159 #endif
 160
 161 /*
 162  * Board init
 163  */
 164 static void __init mx1ads_init(void)
 165 {
 166         /* UART */
 167         mxc_register_device(&imx_uart1_device, &uart_pdata[0]);
 168         mxc_register_device(&imx_uart2_device, &uart_pdata[1]);
 169
 170         /* Physmap flash */
 171         mxc_register_device(&flash_device, &mx1ads_flash_data);
 172
 173         /* I2C */
 174 #ifdef CONFIG_I2C_IMX
 175         i2c_register_board_info(0, mx1ads_i2c_devices,
 176                                 ARRAY_SIZE(mx1ads_i2c_devices));
 177
 178         mxc_register_device(&imx_i2c_device, &mx1ads_i2c_data);
 179 #endif
 180 }
 181
 182 static void __init mx1ads_timer_init(void)
 183 {
 184         mx1_clocks_init(32000);
 185 }
 186
 187 struct sys_timer mx1ads_timer = {
 188         .init   = mx1ads_timer_init,
 189 };
 190
 191 MACHINE_START(MX1ADS, "Freescale MX1ADS")
 192         /* Maintainer: Sascha Hauer, Pengutronix */
 193         .phys_io        = IMX_IO_PHYS,
 194         .io_pg_offst    = (IMX_IO_BASE >> 18) & 0xfffc,
 195         .boot_params    = PHYS_OFFSET + 0x100,
 196         .map_io         = mxc_map_io,
 197         .init_irq       = mxc_init_irq,
 198         .timer          = &mx1ads_timer,
 199         .init_machine   = mx1ads_init,
 200 MACHINE_END
 201
 202 MACHINE_START(MXLADS, "Freescale MXLADS")
 203         .phys_io        = IMX_IO_PHYS,
 204         .io_pg_offst    = (IMX_IO_BASE >> 18) & 0xfffc,
 205         .boot_params    = PHYS_OFFSET + 0x100,
 206         .map_io         = mxc_map_io,
 207         .init_irq       = mxc_init_irq,
 208         .timer          = &mx1ads_timer,
 209         .init_machine   = mx1ads_init,
 210 MACHINE_END