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