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 #include <linux/regulator/machine.h>
  28 #include <linux/regulator/fixed.h>
  29
  30 #include <asm/irq.h>
  31 #include <asm/mach-types.h>
  32 #include <asm/memory.h>
  33 #include <asm/setup.h>
  34 #include <asm/mach/arch.h>
  35 #include <asm/mach/irq.h>
  36 #include <asm/mach/map.h>
  37 #include <asm/mach/time.h>
  38
  39 #include <mach/clock.h>
  40 #include <mach/common.h>
  41 #include <mach/hardware.h>
  42 #include <mach/iomux-mx3.h>
  43
  44 #include "devices-imx31.h"
  45
  46 #define KZM_ARM11_IO_ADDRESS(x) (IOMEM(                                 \
  47         IMX_IO_P2V_MODULE(x, MX31_CS4) ?:                               \
  48         IMX_IO_P2V_MODULE(x, MX31_CS5)) ?:                              \
  49         MX31_IO_ADDRESS(x))
  50
  51 /*
  52  *  KZM-ARM11-01 Board Control Registers on FPGA
  53  */
  54 #define KZM_ARM11_CTL1          (MX31_CS4_BASE_ADDR + 0x1000)
  55 #define KZM_ARM11_CTL2          (MX31_CS4_BASE_ADDR + 0x1001)
  56 #define KZM_ARM11_RSW1          (MX31_CS4_BASE_ADDR + 0x1002)
  57 #define KZM_ARM11_BACK_LIGHT    (MX31_CS4_BASE_ADDR + 0x1004)
  58 #define KZM_ARM11_FPGA_REV      (MX31_CS4_BASE_ADDR + 0x1008)
  59 #define KZM_ARM11_7SEG_LED      (MX31_CS4_BASE_ADDR + 0x1010)
  60 #define KZM_ARM11_LEDS          (MX31_CS4_BASE_ADDR + 0x1020)
  61 #define KZM_ARM11_DIPSW2        (MX31_CS4_BASE_ADDR + 0x1003)
  62
  63 /*
  64  * External UART for touch panel on FPGA
  65  */
  66 #define KZM_ARM11_16550         (MX31_CS4_BASE_ADDR + 0x1050)
  67
  68 #if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_8250_MODULE)
  69 /*
  70  * KZM-ARM11-01 has an external UART on FPGA
  71  */
  72 static struct plat_serial8250_port serial_platform_data[] = {
  73         {
  74                 .membase        = KZM_ARM11_IO_ADDRESS(KZM_ARM11_16550),
  75                 .mapbase        = KZM_ARM11_16550,
  76                 .irq            = IOMUX_TO_IRQ(MX31_PIN_GPIO1_1),
  77                 .irqflags       = IRQ_TYPE_EDGE_RISING,
  78                 .uartclk        = 14745600,
  79                 .regshift       = 0,
  80                 .iotype         = UPIO_MEM,
  81                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST |
  82                                   UPF_BUGGY_UART,
  83         },
  84         {},
  85 };
  86
  87 static struct resource serial8250_resources[] = {
  88         {
  89                 .start  = KZM_ARM11_16550,
  90                 .end    = KZM_ARM11_16550 + 0x10,
  91                 .flags  = IORESOURCE_MEM,
  92         },
  93         {
  94                 .start  = IOMUX_TO_IRQ(MX31_PIN_GPIO1_1),
  95                 .end    = IOMUX_TO_IRQ(MX31_PIN_GPIO1_1),
  96                 .flags  = IORESOURCE_IRQ,
  97         },
  98 };
  99
 100 static struct platform_device serial_device = {
 101         .name           = "serial8250",
 102         .id             = PLAT8250_DEV_PLATFORM,
 103         .dev            = {
 104                                 .platform_data = serial_platform_data,
 105                           },
 106         .num_resources  = ARRAY_SIZE(serial8250_resources),
 107         .resource       = serial8250_resources,
 108 };
 109
 110 static int __init kzm_init_ext_uart(void)
 111 {
 112         u8 tmp;
 113
 114         /*
 115          * GPIO 1-1: external UART interrupt line
 116          */
 117         mxc_iomux_mode(IOMUX_MODE(MX31_PIN_GPIO1_1, IOMUX_CONFIG_GPIO));
 118         gpio_request(IOMUX_TO_GPIO(MX31_PIN_GPIO1_1), "ext-uart-int");
 119         gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_GPIO1_1));
 120
 121         /*
 122          * Unmask UART interrupt
 123          */
 124         tmp = __raw_readb(KZM_ARM11_IO_ADDRESS(KZM_ARM11_CTL1));
 125         tmp |= 0x2;
 126         __raw_writeb(tmp, KZM_ARM11_IO_ADDRESS(KZM_ARM11_CTL1));
 127
 128         return platform_device_register(&serial_device);
 129 }
 130 #else
 131 static inline int kzm_init_ext_uart(void)
 132 {
 133         return 0;
 134 }
 135 #endif
 136
 137 /*
 138  * SMSC LAN9118
 139  */
 140 #if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
 141 static struct smsc911x_platform_config kzm_smsc9118_config = {
 142         .phy_interface  = PHY_INTERFACE_MODE_MII,
 143         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH,
 144         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
 145         .flags          = SMSC911X_USE_32BIT | SMSC911X_SAVE_MAC_ADDRESS,
 146 };
 147
 148 static struct resource kzm_smsc9118_resources[] = {
 149         {
 150                 .start  = MX31_CS5_BASE_ADDR,
 151                 .end    = MX31_CS5_BASE_ADDR + SZ_128K - 1,
 152                 .flags  = IORESOURCE_MEM,
 153         },
 154         {
 155                 .start  = IOMUX_TO_IRQ(MX31_PIN_GPIO1_2),
 156                 .end    = IOMUX_TO_IRQ(MX31_PIN_GPIO1_2),
 157                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 158         },
 159 };
 160
 161 static struct platform_device kzm_smsc9118_device = {
 162         .name           = "smsc911x",
 163         .id             = -1,
 164         .num_resources  = ARRAY_SIZE(kzm_smsc9118_resources),
 165         .resource       = kzm_smsc9118_resources,
 166         .dev            = {
 167                                 .platform_data = &kzm_smsc9118_config,
 168                           },
 169 };
 170
 171 static struct regulator_consumer_supply dummy_supplies[] = {
 172         REGULATOR_SUPPLY("vdd33a", "smsc911x"),
 173         REGULATOR_SUPPLY("vddvario", "smsc911x"),
 174 };
 175
 176 static int __init kzm_init_smsc9118(void)
 177 {
 178         /*
 179          * GPIO 1-2: SMSC9118 interrupt line
 180          */
 181         mxc_iomux_mode(IOMUX_MODE(MX31_PIN_GPIO1_2, IOMUX_CONFIG_GPIO));
 182         gpio_request(IOMUX_TO_GPIO(MX31_PIN_GPIO1_2), "smsc9118-int");
 183         gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_GPIO1_2));
 184
 185         regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
 186
 187         return platform_device_register(&kzm_smsc9118_device);
 188 }
 189 #else
 190 static inline int kzm_init_smsc9118(void)
 191 {
 192         return 0;
 193 }
 194 #endif
 195
 196 #if defined(CONFIG_SERIAL_IMX) || defined(CONFIG_SERIAL_IMX_MODULE)
 197 static const struct imxuart_platform_data uart_pdata __initconst = {
 198         .flags = IMXUART_HAVE_RTSCTS,
 199 };
 200
 201 static void __init kzm_init_imx_uart(void)
 202 {
 203         imx31_add_imx_uart0(&uart_pdata);
 204         imx31_add_imx_uart1(&uart_pdata);
 205 }
 206 #else
 207 static inline void kzm_init_imx_uart(void)
 208 {
 209 }
 210 #endif
 211
 212 static int kzm_pins[] __initdata = {
 213         MX31_PIN_CTS1__CTS1,
 214         MX31_PIN_RTS1__RTS1,
 215         MX31_PIN_TXD1__TXD1,
 216         MX31_PIN_RXD1__RXD1,
 217         MX31_PIN_DCD_DCE1__DCD_DCE1,
 218         MX31_PIN_RI_DCE1__RI_DCE1,
 219         MX31_PIN_DSR_DCE1__DSR_DCE1,
 220         MX31_PIN_DTR_DCE1__DTR_DCE1,
 221         MX31_PIN_CTS2__CTS2,
 222         MX31_PIN_RTS2__RTS2,
 223         MX31_PIN_TXD2__TXD2,
 224         MX31_PIN_RXD2__RXD2,
 225         MX31_PIN_DCD_DTE1__DCD_DTE2,
 226         MX31_PIN_RI_DTE1__RI_DTE2,
 227         MX31_PIN_DSR_DTE1__DSR_DTE2,
 228         MX31_PIN_DTR_DTE1__DTR_DTE2,
 229 };
 230
 231 /*
 232  * Board specific initialization.
 233  */
 234 static void __init kzm_board_init(void)
 235 {
 236         imx31_soc_init();
 237
 238         mxc_iomux_setup_multiple_pins(kzm_pins,
 239                                       ARRAY_SIZE(kzm_pins), "kzm");
 240         kzm_init_ext_uart();
 241         kzm_init_smsc9118();
 242         kzm_init_imx_uart();
 243
 244         pr_info("Clock input source is 26MHz\n");
 245 }
 246
 247 /*
 248  * This structure defines static mappings for the kzm-arm11-01 board.
 249  */
 250 static struct map_desc kzm_io_desc[] __initdata = {
 251         {
 252                 .virtual        = MX31_CS4_BASE_ADDR_VIRT,
 253                 .pfn            = __phys_to_pfn(MX31_CS4_BASE_ADDR),
 254                 .length         = MX31_CS4_SIZE,
 255                 .type           = MT_DEVICE
 256         },
 257         {
 258                 .virtual        = MX31_CS5_BASE_ADDR_VIRT,
 259                 .pfn            = __phys_to_pfn(MX31_CS5_BASE_ADDR),
 260                 .length         = MX31_CS5_SIZE,
 261                 .type           = MT_DEVICE
 262         },
 263 };
 264
 265 /*
 266  * Set up static virtual mappings.
 267  */
 268 static void __init kzm_map_io(void)
 269 {
 270         mx31_map_io();
 271         iotable_init(kzm_io_desc, ARRAY_SIZE(kzm_io_desc));
 272 }
 273
 274 static void __init kzm_timer_init(void)
 275 {
 276         mx31_clocks_init(26000000);
 277 }
 278
 279 static struct sys_timer kzm_timer = {
 280         .init = kzm_timer_init,
 281 };
 282
 283 MACHINE_START(KZM_ARM11_01, "Kyoto Microcomputer Co., Ltd. KZM-ARM11-01")
 284         .atag_offset = 0x100,
 285         .map_io = kzm_map_io,
 286         .init_early = imx31_init_early,
 287         .init_irq = mx31_init_irq,
 288         .handle_irq = imx31_handle_irq,
 289         .timer = &kzm_timer,
 290         .init_machine = kzm_board_init,
 291         .restart        = mxc_restart,
 292 MACHINE_END