arch/arm/mach-mx3/kzmarm11.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 #if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_8250_MODULE)
  50 /*
  51  * KZM-ARM11-01 has an external UART on FPGA
  52  */
  53 static struct plat_serial8250_port serial_platform_data[] = {
  54         {
  55                 .membase        = IO_ADDRESS(KZM_ARM11_16550),
  56                 .mapbase        = KZM_ARM11_16550,
  57                 .irq            = IOMUX_TO_IRQ(MX31_PIN_GPIO1_1),
  58                 .irqflags       = IRQ_TYPE_EDGE_RISING,
  59                 .uartclk        = 14745600,
  60                 .regshift       = 0,
  61                 .iotype         = UPIO_MEM,
  62                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST |
  63                                   UPF_BUGGY_UART,
  64         },
  65         {},
  66 };
  67
  68 static struct resource serial8250_resources[] = {
  69         {
  70                 .start  = KZM_ARM11_16550,
  71                 .end    = KZM_ARM11_16550 + 0x10,
  72                 .flags  = IORESOURCE_MEM,
  73         },
  74         {
  75                 .start  = IOMUX_TO_IRQ(MX31_PIN_GPIO1_1),
  76                 .end    = IOMUX_TO_IRQ(MX31_PIN_GPIO1_1),
  77                 .flags  = IORESOURCE_IRQ,
  78         },
  79 };
  80
  81 static struct platform_device serial_device = {
  82         .name           = "serial8250",
  83         .id             = PLAT8250_DEV_PLATFORM,
  84         .dev            = {
  85                                 .platform_data = serial_platform_data,
  86                           },
  87         .num_resources  = ARRAY_SIZE(serial8250_resources),
  88         .resource       = serial8250_resources,
  89 };
  90
  91 static int __init kzm_init_ext_uart(void)
  92 {
  93         u8 tmp;
  94
  95         /*
  96          * GPIO 1-1: external UART interrupt line
  97          */
  98         mxc_iomux_mode(IOMUX_MODE(MX31_PIN_GPIO1_1, IOMUX_CONFIG_GPIO));
  99         gpio_request(IOMUX_TO_GPIO(MX31_PIN_GPIO1_1), "ext-uart-int");
 100         gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_GPIO1_1));
 101
 102         /*
 103          * Unmask UART interrupt
 104          */
 105         tmp = __raw_readb(IO_ADDRESS(KZM_ARM11_CTL1));
 106         tmp |= 0x2;
 107         __raw_writeb(tmp, IO_ADDRESS(KZM_ARM11_CTL1));
 108
 109         return platform_device_register(&serial_device);
 110 }
 111 #else
 112 static inline int kzm_init_ext_uart(void)
 113 {
 114         return 0;
 115 }
 116 #endif
 117
 118 /*
 119  * SMSC LAN9118
 120  */
 121 #if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
 122 static struct smsc911x_platform_config kzm_smsc9118_config = {
 123         .phy_interface  = PHY_INTERFACE_MODE_MII,
 124         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH,
 125         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
 126         .flags          = SMSC911X_USE_32BIT | SMSC911X_SAVE_MAC_ADDRESS,
 127 };
 128
 129 static struct resource kzm_smsc9118_resources[] = {
 130         {
 131                 .start  = CS5_BASE_ADDR,
 132                 .end    = CS5_BASE_ADDR + SZ_128K - 1,
 133                 .flags  = IORESOURCE_MEM,
 134         },
 135         {
 136                 .start  = IOMUX_TO_IRQ(MX31_PIN_GPIO1_2),
 137                 .end    = IOMUX_TO_IRQ(MX31_PIN_GPIO1_2),
 138                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 139         },
 140 };
 141
 142 static struct platform_device kzm_smsc9118_device = {
 143         .name           = "smsc911x",
 144         .id             = -1,
 145         .num_resources  = ARRAY_SIZE(kzm_smsc9118_resources),
 146         .resource       = kzm_smsc9118_resources,
 147         .dev            = {
 148                                 .platform_data = &kzm_smsc9118_config,
 149                           },
 150 };
 151
 152 static int __init kzm_init_smsc9118(void)
 153 {
 154         /*
 155          * GPIO 1-2: SMSC9118 interrupt line
 156          */
 157         mxc_iomux_mode(IOMUX_MODE(MX31_PIN_GPIO1_2, IOMUX_CONFIG_GPIO));
 158         gpio_request(IOMUX_TO_GPIO(MX31_PIN_GPIO1_2), "smsc9118-int");
 159         gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_GPIO1_2));
 160
 161         return platform_device_register(&kzm_smsc9118_device);
 162 }
 163 #else
 164 static inline int kzm_init_smsc9118(void)
 165 {
 166         return 0;
 167 }
 168 #endif
 169
 170 #if defined(CONFIG_SERIAL_IMX) || defined(CONFIG_SERIAL_IMX_MODULE)
 171 static struct imxuart_platform_data uart_pdata = {
 172         .flags = IMXUART_HAVE_RTSCTS,
 173 };
 174
 175 static void __init kzm_init_imx_uart(void)
 176 {
 177         mxc_register_device(&mxc_uart_device0, &uart_pdata);
 178
 179         mxc_register_device(&mxc_uart_device1, &uart_pdata);
 180 }
 181 #else
 182 static inline void kzm_init_imx_uart(void)
 183 {
 184 }
 185 #endif
 186
 187 static int kzm_pins[] __initdata = {
 188         MX31_PIN_CTS1__CTS1,
 189         MX31_PIN_RTS1__RTS1,
 190         MX31_PIN_TXD1__TXD1,
 191         MX31_PIN_RXD1__RXD1,
 192         MX31_PIN_DCD_DCE1__DCD_DCE1,
 193         MX31_PIN_RI_DCE1__RI_DCE1,
 194         MX31_PIN_DSR_DCE1__DSR_DCE1,
 195         MX31_PIN_DTR_DCE1__DTR_DCE1,
 196         MX31_PIN_CTS2__CTS2,
 197         MX31_PIN_RTS2__RTS2,
 198         MX31_PIN_TXD2__TXD2,
 199         MX31_PIN_RXD2__RXD2,
 200         MX31_PIN_DCD_DTE1__DCD_DTE2,
 201         MX31_PIN_RI_DTE1__RI_DTE2,
 202         MX31_PIN_DSR_DTE1__DSR_DTE2,
 203         MX31_PIN_DTR_DTE1__DTR_DTE2,
 204 };
 205
 206 /*
 207  * Board specific initialization.
 208  */
 209 static void __init kzm_board_init(void)
 210 {
 211         mxc_iomux_setup_multiple_pins(kzm_pins,
 212                                       ARRAY_SIZE(kzm_pins), "kzm");
 213         kzm_init_ext_uart();
 214         kzm_init_smsc9118();
 215         kzm_init_imx_uart();
 216
 217         pr_info("Clock input source is 26MHz\n");
 218 }
 219
 220 /*
 221  * This structure defines static mappings for the kzm-arm11-01 board.
 222  */
 223 static struct map_desc kzm_io_desc[] __initdata = {
 224         {
 225                 .virtual        = CS4_BASE_ADDR_VIRT,
 226                 .pfn            = __phys_to_pfn(CS4_BASE_ADDR),
 227                 .length         = CS4_SIZE,
 228                 .type           = MT_DEVICE
 229         },
 230         {
 231                 .virtual        = CS5_BASE_ADDR_VIRT,
 232                 .pfn            = __phys_to_pfn(CS5_BASE_ADDR),
 233                 .length         = CS5_SIZE,
 234                 .type           = MT_DEVICE
 235         },
 236 };
 237
 238 /*
 239  * Set up static virtual mappings.
 240  */
 241 static void __init kzm_map_io(void)
 242 {
 243         mx31_map_io();
 244         iotable_init(kzm_io_desc, ARRAY_SIZE(kzm_io_desc));
 245 }
 246
 247 static void __init kzm_timer_init(void)
 248 {
 249         mx31_clocks_init(26000000);
 250 }
 251
 252 static struct sys_timer kzm_timer = {
 253         .init   = kzm_timer_init,
 254 };
 255
 256 /*
 257  * The following uses standard kernel macros define in arch.h in order to
 258  * initialize __mach_desc_KZM_ARM11_01 data structure.
 259  */
 260 MACHINE_START(KZM_ARM11_01, "Kyoto Microcomputer Co., Ltd. KZM-ARM11-01")
 261         .phys_io        = AIPS1_BASE_ADDR,
 262         .io_pg_offst    = ((AIPS1_BASE_ADDR_VIRT) >> 18) & 0xfffc,
 263         .boot_params    = PHYS_OFFSET + 0x100,
 264         .map_io         = kzm_map_io,
 265         .init_irq       = mx31_init_irq,
 266         .init_machine   = kzm_board_init,
 267         .timer          = &kzm_timer,
 268 MACHINE_END