arch/arm/mach-mx3/mach-kzm_arm11_01.c

   1 /*
   2  * KZM-ARM11-01 support
   3  *  Copyright (C) 2009  Yoichi Yuasa <yuasa@linux-mips.org>
   4  *
   5  * based on code for MX31ADS,
   6  *  Copyright (C) 2000 Deep Blue Solutions Ltd
   7  *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
   8  *  Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  */
  20
  21 #include <linux/gpio.h>
  22 #include <linux/init.h>
  23 #include <linux/platform_device.h>
  24 #include <linux/serial_8250.h>
  25 #include <linux/smsc911x.h>
  26 #include <linux/types.h>
  27
  28 #include <asm/irq.h>
  29 #include <asm/mach-types.h>
  30 #include <asm/setup.h>
  31 #include <asm/mach/arch.h>
  32 #include <asm/mach/irq.h>
  33 #include <asm/mach/map.h>
  34 #include <asm/mach/time.h>
  35
  36 #include <mach/clock.h>
  37 #include <mach/common.h>
  38 #include <mach/iomux-mx3.h>
  39 #include <mach/memory.h>
  40
  41 #include "devices-imx31.h"
  42 #include "devices.h"
  43
  44 #define KZM_ARM11_IO_ADDRESS(x) (                                       \
  45         IMX_IO_ADDRESS(x, MX31_CS4) ?:                                  \
  46         IMX_IO_ADDRESS(x, MX31_CS5) ?:                                  \
  47         MX31_IO_ADDRESS(x))
  48
  49 /*
  50  *  KZM-ARM11-01 Board Control Registers on FPGA
  51  */
  52 #define KZM_ARM11_CTL1          (MX31_CS4_BASE_ADDR + 0x1000)
  53 #define KZM_ARM11_CTL2          (MX31_CS4_BASE_ADDR + 0x1001)
  54 #define KZM_ARM11_RSW1          (MX31_CS4_BASE_ADDR + 0x1002)
  55 #define KZM_ARM11_BACK_LIGHT    (MX31_CS4_BASE_ADDR + 0x1004)
  56 #define KZM_ARM11_FPGA_REV      (MX31_CS4_BASE_ADDR + 0x1008)
  57 #define KZM_ARM11_7SEG_LED      (MX31_CS4_BASE_ADDR + 0x1010)
  58 #define KZM_ARM11_LEDS          (MX31_CS4_BASE_ADDR + 0x1020)
  59 #define KZM_ARM11_DIPSW2        (MX31_CS4_BASE_ADDR + 0x1003)
  60
  61 /*
  62  * External UART for touch panel on FPGA
  63  */
  64 #define KZM_ARM11_16550         (MX31_CS4_BASE_ADDR + 0x1050)
  65
  66 #if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_8250_MODULE)
  67 /*
  68  * KZM-ARM11-01 has an external UART on FPGA
  69  */
  70 static struct plat_serial8250_port serial_platform_data[] = {
  71         {
  72                 .membase        = KZM_ARM11_IO_ADDRESS(KZM_ARM11_16550),
  73                 .mapbase        = KZM_ARM11_16550,
  74                 .irq            = IOMUX_TO_IRQ(MX31_PIN_GPIO1_1),
  75                 .irqflags       = IRQ_TYPE_EDGE_RISING,
  76                 .uartclk        = 14745600,
  77                 .regshift       = 0,
  78                 .iotype         = UPIO_MEM,
  79                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST |
  80                                   UPF_BUGGY_UART,
  81         },
  82         {},
  83 };
  84
  85 static struct resource serial8250_resources[] = {
  86         {
  87                 .start  = KZM_ARM11_16550,
  88                 .end    = KZM_ARM11_16550 + 0x10,
  89                 .flags  = IORESOURCE_MEM,
  90         },
  91         {
  92                 .start  = IOMUX_TO_IRQ(MX31_PIN_GPIO1_1),
  93                 .end    = IOMUX_TO_IRQ(MX31_PIN_GPIO1_1),
  94                 .flags  = IORESOURCE_IRQ,
  95         },
  96 };
  97
  98 static struct platform_device serial_device = {
  99         .name           = "serial8250",
 100         .id             = PLAT8250_DEV_PLATFORM,
 101         .dev            = {
 102                                 .platform_data = serial_platform_data,
 103                           },
 104         .num_resources  = ARRAY_SIZE(serial8250_resources),
 105         .resource       = serial8250_resources,
 106 };
 107
 108 static int __init kzm_init_ext_uart(void)
 109 {
 110         u8 tmp;
 111
 112         /*
 113          * GPIO 1-1: external UART interrupt line
 114          */
 115         mxc_iomux_mode(IOMUX_MODE(MX31_PIN_GPIO1_1, IOMUX_CONFIG_GPIO));
 116         gpio_request(IOMUX_TO_GPIO(MX31_PIN_GPIO1_1), "ext-uart-int");
 117         gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_GPIO1_1));
 118
 119         /*
 120          * Unmask UART interrupt
 121          */
 122         tmp = __raw_readb(KZM_ARM11_IO_ADDRESS(KZM_ARM11_CTL1));
 123         tmp |= 0x2;
 124         __raw_writeb(tmp, KZM_ARM11_IO_ADDRESS(KZM_ARM11_CTL1));
 125
 126         return platform_device_register(&serial_device);
 127 }
 128 #else
 129 static inline int kzm_init_ext_uart(void)
 130 {
 131         return 0;
 132 }
 133 #endif
 134
 135 /*
 136  * SMSC LAN9118
 137  */
 138 #if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
 139 static struct smsc911x_platform_config kzm_smsc9118_config = {
 140         .phy_interface  = PHY_INTERFACE_MODE_MII,
 141         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH,
 142         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
 143         .flags          = SMSC911X_USE_32BIT | SMSC911X_SAVE_MAC_ADDRESS,
 144 };
 145
 146 static struct resource kzm_smsc9118_resources[] = {
 147         {
 148                 .start  = MX31_CS5_BASE_ADDR,
 149                 .end    = MX31_CS5_BASE_ADDR + SZ_128K - 1,
 150                 .flags  = IORESOURCE_MEM,
 151         },
 152         {
 153                 .start  = IOMUX_TO_IRQ(MX31_PIN_GPIO1_2),
 154                 .end    = IOMUX_TO_IRQ(MX31_PIN_GPIO1_2),
 155                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 156         },
 157 };
 158
 159 static struct platform_device kzm_smsc9118_device = {
 160         .name           = "smsc911x",
 161         .id             = -1,
 162         .num_resources  = ARRAY_SIZE(kzm_smsc9118_resources),
 163         .resource       = kzm_smsc9118_resources,
 164         .dev            = {
 165                                 .platform_data = &kzm_smsc9118_config,
 166                           },
 167 };
 168
 169 static int __init kzm_init_smsc9118(void)
 170 {
 171         /*
 172          * GPIO 1-2: SMSC9118 interrupt line
 173          */
 174         mxc_iomux_mode(IOMUX_MODE(MX31_PIN_GPIO1_2, IOMUX_CONFIG_GPIO));
 175         gpio_request(IOMUX_TO_GPIO(MX31_PIN_GPIO1_2), "smsc9118-int");
 176         gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_GPIO1_2));
 177
 178         return platform_device_register(&kzm_smsc9118_device);
 179 }
 180 #else
 181 static inline int kzm_init_smsc9118(void)
 182 {
 183         return 0;
 184 }
 185 #endif
 186
 187 #if defined(CONFIG_SERIAL_IMX) || defined(CONFIG_SERIAL_IMX_MODULE)
 188 static const struct imxuart_platform_data uart_pdata __initconst = {
 189         .flags = IMXUART_HAVE_RTSCTS,
 190 };
 191
 192 static void __init kzm_init_imx_uart(void)
 193 {
 194         imx31_add_imx_uart0(&uart_pdata);
 195         imx31_add_imx_uart1(&uart_pdata);
 196 }
 197 #else
 198 static inline void kzm_init_imx_uart(void)
 199 {
 200 }
 201 #endif
 202
 203 static int kzm_pins[] __initdata = {
 204         MX31_PIN_CTS1__CTS1,
 205         MX31_PIN_RTS1__RTS1,
 206         MX31_PIN_TXD1__TXD1,
 207         MX31_PIN_RXD1__RXD1,
 208         MX31_PIN_DCD_DCE1__DCD_DCE1,
 209         MX31_PIN_RI_DCE1__RI_DCE1,
 210         MX31_PIN_DSR_DCE1__DSR_DCE1,
 211         MX31_PIN_DTR_DCE1__DTR_DCE1,
 212         MX31_PIN_CTS2__CTS2,
 213         MX31_PIN_RTS2__RTS2,
 214         MX31_PIN_TXD2__TXD2,
 215         MX31_PIN_RXD2__RXD2,
 216         MX31_PIN_DCD_DTE1__DCD_DTE2,
 217         MX31_PIN_RI_DTE1__RI_DTE2,
 218         MX31_PIN_DSR_DTE1__DSR_DTE2,
 219         MX31_PIN_DTR_DTE1__DTR_DTE2,
 220 };
 221
 222 /*
 223  * Board specific initialization.
 224  */
 225 static void __init kzm_board_init(void)
 226 {
 227         mxc_iomux_setup_multiple_pins(kzm_pins,
 228                                       ARRAY_SIZE(kzm_pins), "kzm");
 229         kzm_init_ext_uart();
 230         kzm_init_smsc9118();
 231         kzm_init_imx_uart();
 232
 233         pr_info("Clock input source is 26MHz\n");
 234 }
 235
 236 /*
 237  * This structure defines static mappings for the kzm-arm11-01 board.
 238  */
 239 static struct map_desc kzm_io_desc[] __initdata = {
 240         {
 241                 .virtual        = MX31_CS4_BASE_ADDR_VIRT,
 242                 .pfn            = __phys_to_pfn(MX31_CS4_BASE_ADDR),
 243                 .length         = MX31_CS4_SIZE,
 244                 .type           = MT_DEVICE
 245         },
 246         {
 247                 .virtual        = MX31_CS5_BASE_ADDR_VIRT,
 248                 .pfn            = __phys_to_pfn(MX31_CS5_BASE_ADDR),
 249                 .length         = MX31_CS5_SIZE,
 250                 .type           = MT_DEVICE
 251         },
 252 };
 253
 254 /*
 255  * Set up static virtual mappings.
 256  */
 257 static void __init kzm_map_io(void)
 258 {
 259         mx31_map_io();
 260         iotable_init(kzm_io_desc, ARRAY_SIZE(kzm_io_desc));
 261 }
 262
 263 static void __init kzm_timer_init(void)
 264 {
 265         mx31_clocks_init(26000000);
 266 }
 267
 268 static struct sys_timer kzm_timer = {
 269         .init   = kzm_timer_init,
 270 };
 271
 272 /*
 273  * The following uses standard kernel macros define in arch.h in order to
 274  * initialize __mach_desc_KZM_ARM11_01 data structure.
 275  */
 276 MACHINE_START(KZM_ARM11_01, "Kyoto Microcomputer Co., Ltd. KZM-ARM11-01")
 277         .boot_params    = MX3x_PHYS_OFFSET + 0x100,
 278         .map_io         = kzm_map_io,
 279         .init_irq       = mx31_init_irq,
 280         .init_machine   = kzm_board_init,
 281         .timer          = &kzm_timer,
 282 MACHINE_END