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  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  23  */
  24
  25 #include <linux/gpio.h>
  26 #include <linux/init.h>
  27 #include <linux/platform_device.h>
  28 #include <linux/serial_8250.h>
  29 #include <linux/smsc911x.h>
  30 #include <linux/types.h>
  31
  32 #include <asm/irq.h>
  33 #include <asm/mach-types.h>
  34 #include <asm/setup.h>
  35 #include <asm/mach/arch.h>
  36 #include <asm/mach/irq.h>
  37 #include <asm/mach/map.h>
  38 #include <asm/mach/time.h>
  39
  40 #include <mach/board-kzmarm11.h>
  41 #include <mach/clock.h>
  42 #include <mach/common.h>
  43 #include <mach/imx-uart.h>
  44 #include <mach/iomux-mx3.h>
  45 #include <mach/memory.h>
  46
  47 #include "devices.h"
  48
  49 #define KZM_ARM11_IO_ADDRESS(x) (                                       \
  50         IMX_IO_ADDRESS(x, MX31_CS4) ?:                                  \
  51         IMX_IO_ADDRESS(x, MX31_CS5) ?:                                  \
  52         MX31_IO_ADDRESS(x))
  53
  54 #if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_8250_MODULE)
  55 /*
  56  * KZM-ARM11-01 has an external UART on FPGA
  57  */
  58 static struct plat_serial8250_port serial_platform_data[] = {
  59         {
  60                 .membase        = KZM_ARM11_IO_ADDRESS(KZM_ARM11_16550),
  61                 .mapbase        = KZM_ARM11_16550,
  62                 .irq            = IOMUX_TO_IRQ(MX31_PIN_GPIO1_1),
  63                 .irqflags       = IRQ_TYPE_EDGE_RISING,
  64                 .uartclk        = 14745600,
  65                 .regshift       = 0,
  66                 .iotype         = UPIO_MEM,
  67                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST |
  68                                   UPF_BUGGY_UART,
  69         },
  70         {},
  71 };
  72
  73 static struct resource serial8250_resources[] = {
  74         {
  75                 .start  = KZM_ARM11_16550,
  76                 .end    = KZM_ARM11_16550 + 0x10,
  77                 .flags  = IORESOURCE_MEM,
  78         },
  79         {
  80                 .start  = IOMUX_TO_IRQ(MX31_PIN_GPIO1_1),
  81                 .end    = IOMUX_TO_IRQ(MX31_PIN_GPIO1_1),
  82                 .flags  = IORESOURCE_IRQ,
  83         },
  84 };
  85
  86 static struct platform_device serial_device = {
  87         .name           = "serial8250",
  88         .id             = PLAT8250_DEV_PLATFORM,
  89         .dev            = {
  90                                 .platform_data = serial_platform_data,
  91                           },
  92         .num_resources  = ARRAY_SIZE(serial8250_resources),
  93         .resource       = serial8250_resources,
  94 };
  95
  96 static int __init kzm_init_ext_uart(void)
  97 {
  98         u8 tmp;
  99
 100         /*
 101          * GPIO 1-1: external UART interrupt line
 102          */
 103         mxc_iomux_mode(IOMUX_MODE(MX31_PIN_GPIO1_1, IOMUX_CONFIG_GPIO));
 104         gpio_request(IOMUX_TO_GPIO(MX31_PIN_GPIO1_1), "ext-uart-int");
 105         gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_GPIO1_1));
 106
 107         /*
 108          * Unmask UART interrupt
 109          */
 110         tmp = __raw_readb(KZM_ARM11_IO_ADDRESS(KZM_ARM11_CTL1));
 111         tmp |= 0x2;
 112         __raw_writeb(tmp, KZM_ARM11_IO_ADDRESS(KZM_ARM11_CTL1));
 113
 114         return platform_device_register(&serial_device);
 115 }
 116 #else
 117 static inline int kzm_init_ext_uart(void)
 118 {
 119         return 0;
 120 }
 121 #endif
 122
 123 /*
 124  * SMSC LAN9118
 125  */
 126 #if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
 127 static struct smsc911x_platform_config kzm_smsc9118_config = {
 128         .phy_interface  = PHY_INTERFACE_MODE_MII,
 129         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH,
 130         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
 131         .flags          = SMSC911X_USE_32BIT | SMSC911X_SAVE_MAC_ADDRESS,
 132 };
 133
 134 static struct resource kzm_smsc9118_resources[] = {
 135         {
 136                 .start  = MX31_CS5_BASE_ADDR,
 137                 .end    = MX31_CS5_BASE_ADDR + SZ_128K - 1,
 138                 .flags  = IORESOURCE_MEM,
 139         },
 140         {
 141                 .start  = IOMUX_TO_IRQ(MX31_PIN_GPIO1_2),
 142                 .end    = IOMUX_TO_IRQ(MX31_PIN_GPIO1_2),
 143                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 144         },
 145 };
 146
 147 static struct platform_device kzm_smsc9118_device = {
 148         .name           = "smsc911x",
 149         .id             = -1,
 150         .num_resources  = ARRAY_SIZE(kzm_smsc9118_resources),
 151         .resource       = kzm_smsc9118_resources,
 152         .dev            = {
 153                                 .platform_data = &kzm_smsc9118_config,
 154                           },
 155 };
 156
 157 static int __init kzm_init_smsc9118(void)
 158 {
 159         /*
 160          * GPIO 1-2: SMSC9118 interrupt line
 161          */
 162         mxc_iomux_mode(IOMUX_MODE(MX31_PIN_GPIO1_2, IOMUX_CONFIG_GPIO));
 163         gpio_request(IOMUX_TO_GPIO(MX31_PIN_GPIO1_2), "smsc9118-int");
 164         gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_GPIO1_2));
 165
 166         return platform_device_register(&kzm_smsc9118_device);
 167 }
 168 #else
 169 static inline int kzm_init_smsc9118(void)
 170 {
 171         return 0;
 172 }
 173 #endif
 174
 175 #if defined(CONFIG_SERIAL_IMX) || defined(CONFIG_SERIAL_IMX_MODULE)
 176 static struct imxuart_platform_data uart_pdata = {
 177         .flags = IMXUART_HAVE_RTSCTS,
 178 };
 179
 180 static void __init kzm_init_imx_uart(void)
 181 {
 182         mxc_register_device(&mxc_uart_device0, &uart_pdata);
 183
 184         mxc_register_device(&mxc_uart_device1, &uart_pdata);
 185 }
 186 #else
 187 static inline void kzm_init_imx_uart(void)
 188 {
 189 }
 190 #endif
 191
 192 static int kzm_pins[] __initdata = {
 193         MX31_PIN_CTS1__CTS1,
 194         MX31_PIN_RTS1__RTS1,
 195         MX31_PIN_TXD1__TXD1,
 196         MX31_PIN_RXD1__RXD1,
 197         MX31_PIN_DCD_DCE1__DCD_DCE1,
 198         MX31_PIN_RI_DCE1__RI_DCE1,
 199         MX31_PIN_DSR_DCE1__DSR_DCE1,
 200         MX31_PIN_DTR_DCE1__DTR_DCE1,
 201         MX31_PIN_CTS2__CTS2,
 202         MX31_PIN_RTS2__RTS2,
 203         MX31_PIN_TXD2__TXD2,
 204         MX31_PIN_RXD2__RXD2,
 205         MX31_PIN_DCD_DTE1__DCD_DTE2,
 206         MX31_PIN_RI_DTE1__RI_DTE2,
 207         MX31_PIN_DSR_DTE1__DSR_DTE2,
 208         MX31_PIN_DTR_DTE1__DTR_DTE2,
 209 };
 210
 211 /*
 212  * Board specific initialization.
 213  */
 214 static void __init kzm_board_init(void)
 215 {
 216         mxc_iomux_setup_multiple_pins(kzm_pins,
 217                                       ARRAY_SIZE(kzm_pins), "kzm");
 218         kzm_init_ext_uart();
 219         kzm_init_smsc9118();
 220         kzm_init_imx_uart();
 221
 222         pr_info("Clock input source is 26MHz\n");
 223 }
 224
 225 /*
 226  * This structure defines static mappings for the kzm-arm11-01 board.
 227  */
 228 static struct map_desc kzm_io_desc[] __initdata = {
 229         {
 230                 .virtual        = MX31_CS4_BASE_ADDR_VIRT,
 231                 .pfn            = __phys_to_pfn(MX31_CS4_BASE_ADDR),
 232                 .length         = MX31_CS4_SIZE,
 233                 .type           = MT_DEVICE
 234         },
 235         {
 236                 .virtual        = MX31_CS5_BASE_ADDR_VIRT,
 237                 .pfn            = __phys_to_pfn(MX31_CS5_BASE_ADDR),
 238                 .length         = MX31_CS5_SIZE,
 239                 .type           = MT_DEVICE
 240         },
 241 };
 242
 243 /*
 244  * Set up static virtual mappings.
 245  */
 246 static void __init kzm_map_io(void)
 247 {
 248         mx31_map_io();
 249         iotable_init(kzm_io_desc, ARRAY_SIZE(kzm_io_desc));
 250 }
 251
 252 static void __init kzm_timer_init(void)
 253 {
 254         mx31_clocks_init(26000000);
 255 }
 256
 257 static struct sys_timer kzm_timer = {
 258         .init   = kzm_timer_init,
 259 };
 260
 261 /*
 262  * The following uses standard kernel macros define in arch.h in order to
 263  * initialize __mach_desc_KZM_ARM11_01 data structure.
 264  */
 265 MACHINE_START(KZM_ARM11_01, "Kyoto Microcomputer Co., Ltd. KZM-ARM11-01")
 266         .phys_io        = MX31_AIPS1_BASE_ADDR,
 267         .io_pg_offst    = (MX31_AIPS1_BASE_ADDR_VIRT >> 18) & 0xfffc,
 268         .boot_params    = MX3x_PHYS_OFFSET + 0x100,
 269         .map_io         = kzm_map_io,
 270         .init_irq       = mx31_init_irq,
 271         .init_machine   = kzm_board_init,
 272         .timer          = &kzm_timer,
 273 MACHINE_END