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