arch/arm/mach-imx/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/memory.h>
  31 #include <asm/setup.h>
  32 #include <asm/mach/arch.h>
  33 #include <asm/mach/irq.h>
  34 #include <asm/mach/map.h>
  35 #include <asm/mach/time.h>
  36
  37 #include <mach/clock.h>
  38 #include <mach/common.h>
  39 #include <mach/iomux-mx3.h>
  40
  41 #include "devices-imx31.h"
  42
  43 #define KZM_ARM11_IO_ADDRESS(x) (IOMEM(                                 \
  44         IMX_IO_P2V_MODULE(x, MX31_CS4) ?:                               \
  45         IMX_IO_P2V_MODULE(x, MX31_CS5)) ?:                              \
  46         MX31_IO_ADDRESS(x))
  47
  48 /*
  49  *  KZM-ARM11-01 Board Control Registers on FPGA
  50  */
  51 #define KZM_ARM11_CTL1          (MX31_CS4_BASE_ADDR + 0x1000)
  52 #define KZM_ARM11_CTL2          (MX31_CS4_BASE_ADDR + 0x1001)
  53 #define KZM_ARM11_RSW1          (MX31_CS4_BASE_ADDR + 0x1002)
  54 #define KZM_ARM11_BACK_LIGHT    (MX31_CS4_BASE_ADDR + 0x1004)
  55 #define KZM_ARM11_FPGA_REV      (MX31_CS4_BASE_ADDR + 0x1008)
  56 #define KZM_ARM11_7SEG_LED      (MX31_CS4_BASE_ADDR + 0x1010)
  57 #define KZM_ARM11_LEDS          (MX31_CS4_BASE_ADDR + 0x1020)
  58 #define KZM_ARM11_DIPSW2        (MX31_CS4_BASE_ADDR + 0x1003)
  59
  60 /*
  61  * External UART for touch panel on FPGA
  62  */
  63 #define KZM_ARM11_16550         (MX31_CS4_BASE_ADDR + 0x1050)
  64
  65 #if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_8250_MODULE)
  66 /*
  67  * KZM-ARM11-01 has an external UART on FPGA
  68  */
  69 static struct plat_serial8250_port serial_platform_data[] = {
  70         {
  71                 .membase        = KZM_ARM11_IO_ADDRESS(KZM_ARM11_16550),
  72                 .mapbase        = KZM_ARM11_16550,
  73                 .irq            = IOMUX_TO_IRQ(MX31_PIN_GPIO1_1),
  74                 .irqflags       = IRQ_TYPE_EDGE_RISING,
  75                 .uartclk        = 14745600,
  76                 .regshift       = 0,
  77                 .iotype         = UPIO_MEM,
  78                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST |
  79                                   UPF_BUGGY_UART,
  80         },
  81         {},
  82 };
  83
  84 static struct resource serial8250_resources[] = {
  85         {
  86                 .start  = KZM_ARM11_16550,
  87                 .end    = KZM_ARM11_16550 + 0x10,
  88                 .flags  = IORESOURCE_MEM,
  89         },
  90         {
  91                 .start  = IOMUX_TO_IRQ(MX31_PIN_GPIO1_1),
  92                 .end    = IOMUX_TO_IRQ(MX31_PIN_GPIO1_1),
  93                 .flags  = IORESOURCE_IRQ,
  94         },
  95 };
  96
  97 static struct platform_device serial_device = {
  98         .name           = "serial8250",
  99         .id             = PLAT8250_DEV_PLATFORM,
 100         .dev            = {
 101                                 .platform_data = serial_platform_data,
 102                           },
 103         .num_resources  = ARRAY_SIZE(serial8250_resources),
 104         .resource       = serial8250_resources,
 105 };
 106
 107 static int __init kzm_init_ext_uart(void)
 108 {
 109         u8 tmp;
 110
 111         /*
 112          * GPIO 1-1: external UART interrupt line
 113          */
 114         mxc_iomux_mode(IOMUX_MODE(MX31_PIN_GPIO1_1, IOMUX_CONFIG_GPIO));
 115         gpio_request(IOMUX_TO_GPIO(MX31_PIN_GPIO1_1), "ext-uart-int");
 116         gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_GPIO1_1));
 117
 118         /*
 119          * Unmask UART interrupt
 120          */
 121         tmp = __raw_readb(KZM_ARM11_IO_ADDRESS(KZM_ARM11_CTL1));
 122         tmp |= 0x2;
 123         __raw_writeb(tmp, KZM_ARM11_IO_ADDRESS(KZM_ARM11_CTL1));
 124
 125         return platform_device_register(&serial_device);
 126 }
 127 #else
 128 static inline int kzm_init_ext_uart(void)
 129 {
 130         return 0;
 131 }
 132 #endif
 133
 134 /*
 135  * SMSC LAN9118
 136  */
 137 #if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
 138 static struct smsc911x_platform_config kzm_smsc9118_config = {
 139         .phy_interface  = PHY_INTERFACE_MODE_MII,
 140         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH,
 141         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
 142         .flags          = SMSC911X_USE_32BIT | SMSC911X_SAVE_MAC_ADDRESS,
 143 };
 144
 145 static struct resource kzm_smsc9118_resources[] = {
 146         {
 147                 .start  = MX31_CS5_BASE_ADDR,
 148                 .end    = MX31_CS5_BASE_ADDR + SZ_128K - 1,
 149                 .flags  = IORESOURCE_MEM,
 150         },
 151         {
 152                 .start  = IOMUX_TO_IRQ(MX31_PIN_GPIO1_2),
 153                 .end    = IOMUX_TO_IRQ(MX31_PIN_GPIO1_2),
 154                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 155         },
 156 };
 157
 158 static struct platform_device kzm_smsc9118_device = {
 159         .name           = "smsc911x",
 160         .id             = -1,
 161         .num_resources  = ARRAY_SIZE(kzm_smsc9118_resources),
 162         .resource       = kzm_smsc9118_resources,
 163         .dev            = {
 164                                 .platform_data = &kzm_smsc9118_config,
 165                           },
 166 };
 167
 168 static int __init kzm_init_smsc9118(void)
 169 {
 170         /*
 171          * GPIO 1-2: SMSC9118 interrupt line
 172          */
 173         mxc_iomux_mode(IOMUX_MODE(MX31_PIN_GPIO1_2, IOMUX_CONFIG_GPIO));
 174         gpio_request(IOMUX_TO_GPIO(MX31_PIN_GPIO1_2), "smsc9118-int");
 175         gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_GPIO1_2));
 176
 177         return platform_device_register(&kzm_smsc9118_device);
 178 }
 179 #else
 180 static inline int kzm_init_smsc9118(void)
 181 {
 182         return 0;
 183 }
 184 #endif
 185
 186 #if defined(CONFIG_SERIAL_IMX) || defined(CONFIG_SERIAL_IMX_MODULE)
 187 static const struct imxuart_platform_data uart_pdata __initconst = {
 188         .flags = IMXUART_HAVE_RTSCTS,
 189 };
 190
 191 static void __init kzm_init_imx_uart(void)
 192 {
 193         imx31_add_imx_uart0(&uart_pdata);
 194         imx31_add_imx_uart1(&uart_pdata);
 195 }
 196 #else
 197 static inline void kzm_init_imx_uart(void)
 198 {
 199 }
 200 #endif
 201
 202 static int kzm_pins[] __initdata = {
 203         MX31_PIN_CTS1__CTS1,
 204         MX31_PIN_RTS1__RTS1,
 205         MX31_PIN_TXD1__TXD1,
 206         MX31_PIN_RXD1__RXD1,
 207         MX31_PIN_DCD_DCE1__DCD_DCE1,
 208         MX31_PIN_RI_DCE1__RI_DCE1,
 209         MX31_PIN_DSR_DCE1__DSR_DCE1,
 210         MX31_PIN_DTR_DCE1__DTR_DCE1,
 211         MX31_PIN_CTS2__CTS2,
 212         MX31_PIN_RTS2__RTS2,
 213         MX31_PIN_TXD2__TXD2,
 214         MX31_PIN_RXD2__RXD2,
 215         MX31_PIN_DCD_DTE1__DCD_DTE2,
 216         MX31_PIN_RI_DTE1__RI_DTE2,
 217         MX31_PIN_DSR_DTE1__DSR_DTE2,
 218         MX31_PIN_DTR_DTE1__DTR_DTE2,
 219 };
 220
 221 /*
 222  * Board specific initialization.
 223  */
 224 static void __init kzm_board_init(void)
 225 {
 226         imx31_soc_init();
 227
 228         mxc_iomux_setup_multiple_pins(kzm_pins,
 229                                       ARRAY_SIZE(kzm_pins), "kzm");
 230         kzm_init_ext_uart();
 231         kzm_init_smsc9118();
 232         kzm_init_imx_uart();
 233
 234         pr_info("Clock input source is 26MHz\n");
 235 }
 236
 237 /*
 238  * This structure defines static mappings for the kzm-arm11-01 board.
 239  */
 240 static struct map_desc kzm_io_desc[] __initdata = {
 241         {
 242                 .virtual        = MX31_CS4_BASE_ADDR_VIRT,
 243                 .pfn            = __phys_to_pfn(MX31_CS4_BASE_ADDR),
 244                 .length         = MX31_CS4_SIZE,
 245                 .type           = MT_DEVICE
 246         },
 247         {
 248                 .virtual        = MX31_CS5_BASE_ADDR_VIRT,
 249                 .pfn            = __phys_to_pfn(MX31_CS5_BASE_ADDR),
 250                 .length         = MX31_CS5_SIZE,
 251                 .type           = MT_DEVICE
 252         },
 253 };
 254
 255 /*
 256  * Set up static virtual mappings.
 257  */
 258 static void __init kzm_map_io(void)
 259 {
 260         mx31_map_io();
 261         iotable_init(kzm_io_desc, ARRAY_SIZE(kzm_io_desc));
 262 }
 263
 264 static void __init kzm_timer_init(void)
 265 {
 266         mx31_clocks_init(26000000);
 267 }
 268
 269 static struct sys_timer kzm_timer = {
 270         .init = kzm_timer_init,
 271 };
 272
 273 MACHINE_START(KZM_ARM11_01, "Kyoto Microcomputer Co., Ltd. KZM-ARM11-01")
 274         .atag_offset = 0x100,
 275         .map_io = kzm_map_io,
 276         .init_early = imx31_init_early,
 277         .init_irq = mx31_init_irq,
 278         .timer = &kzm_timer,
 279         .init_machine = kzm_board_init,
 280 MACHINE_END