arch/arm/mach-at91/board-pcontrol-g20.c

   1 /*
   2  *  Copyright (C) 2010 Christian Glindkamp <christian.glindkamp@taskit.de>
   3  *                     taskit GmbH
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  */
  19 /*
  20  * copied and adjusted from board-stamp9g20.c
  21  * by Peter Gsellmann <pgsellmann@portner-elektronik.at>
  22  */
  23
  24 #include <linux/mm.h>
  25 #include <linux/platform_device.h>
  26 #include <linux/gpio.h>
  27 #include <linux/w1-gpio.h>
  28
  29 #include <asm/mach-types.h>
  30 #include <asm/mach/arch.h>
  31
  32 #include <mach/board.h>
  33 #include <mach/at91sam9_smc.h>
  34 #include <mach/stamp9g20.h>
  35
  36 #include "sam9_smc.h"
  37 #include "generic.h"
  38
  39
  40 static void __init pcontrol_g20_init_early(void)
  41 {
  42         stamp9g20_init_early();
  43
  44         /* USART0 on ttyS1. (Rx, Tx, CTS, RTS) piggyback  A2 */
  45         at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS
  46                                                 | ATMEL_UART_RTS);
  47
  48         /* USART1 on ttyS2. (Rx, Tx, CTS, RTS) isolated RS485  X5 */
  49         at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS
  50                                                 | ATMEL_UART_RTS);
  51
  52         /* USART2 on ttyS3. (Rx, Tx)  9bit-Bus  Multidrop-mode  X4 */
  53         at91_register_uart(AT91SAM9260_ID_US4, 3, 0);
  54 }
  55
  56
  57 static void __init init_irq(void)
  58 {
  59         at91sam9260_init_interrupts(NULL);
  60 }
  61
  62
  63 static struct sam9_smc_config __initdata pcontrol_smc_config[2] = { {
  64         .ncs_read_setup         = 16,
  65         .nrd_setup              = 18,
  66         .ncs_write_setup        = 16,
  67         .nwe_setup              = 18,
  68
  69         .ncs_read_pulse         = 63,
  70         .nrd_pulse              = 55,
  71         .ncs_write_pulse        = 63,
  72         .nwe_pulse              = 55,
  73
  74         .read_cycle             = 127,
  75         .write_cycle            = 127,
  76
  77         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE
  78                         | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_BAT_SELECT
  79                         | AT91_SMC_DBW_8 | AT91_SMC_PS_4
  80                         | AT91_SMC_TDFMODE,
  81         .tdf_cycles             = 3,
  82 }, {
  83         .ncs_read_setup         = 0,
  84         .nrd_setup              = 0,
  85         .ncs_write_setup        = 0,
  86         .nwe_setup              = 1,
  87
  88         .ncs_read_pulse         = 8,
  89         .nrd_pulse              = 8,
  90         .ncs_write_pulse        = 5,
  91         .nwe_pulse              = 4,
  92
  93         .read_cycle             = 8,
  94         .write_cycle            = 7,
  95
  96         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE
  97                         | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_BAT_SELECT
  98                         | AT91_SMC_DBW_16 | AT91_SMC_PS_8
  99                         | AT91_SMC_TDFMODE,
 100         .tdf_cycles             = 1,
 101 } };
 102
 103 static void __init add_device_pcontrol(void)
 104 {
 105         /* configure chip-select 4 (IO compatible to 8051  X4 ) */
 106         sam9_smc_configure(4, &pcontrol_smc_config[0]);
 107         /* configure chip-select 7 (FerroRAM 256KiBx16bit MR2A16A  D4 ) */
 108         sam9_smc_configure(7, &pcontrol_smc_config[1]);
 109 }
 110
 111
 112 /*
 113  * USB Host port
 114  */
 115 static struct at91_usbh_data __initdata usbh_data = {
 116         .ports          = 2,
 117 };
 118
 119
 120 /*
 121  * USB Device port
 122  */
 123 static struct at91_udc_data __initdata pcontrol_g20_udc_data = {
 124         .vbus_pin       = AT91_PIN_PA22,        /* Detect +5V bus voltage */
 125         .pullup_pin     = AT91_PIN_PA4,         /* K-state, active low */
 126 };
 127
 128
 129 /*
 130  * MACB Ethernet device
 131  */
 132 static struct at91_eth_data __initdata macb_data = {
 133         .phy_irq_pin    = AT91_PIN_PA28,
 134         .is_rmii        = 1,
 135 };
 136
 137
 138 /*
 139  * I2C devices: eeprom and phy/switch
 140  */
 141 static struct i2c_board_info __initdata pcontrol_g20_i2c_devices[] = {
 142 {               /* D7  address width=2, 8KiB */
 143         I2C_BOARD_INFO("24c64", 0x50)
 144 }, {            /* D8  address width=1, 1 byte has 32 bits! */
 145         I2C_BOARD_INFO("lan9303", 0x0a)
 146 }, };
 147
 148
 149 /*
 150  * LEDs
 151  */
 152 static struct gpio_led pcontrol_g20_leds[] = {
 153         {
 154                 .name                   = "LED1",       /* red  H5 */
 155                 .gpio                   = AT91_PIN_PB18,
 156                 .active_low             = 1,
 157                 .default_trigger        = "none",       /* supervisor */
 158         }, {
 159                 .name                   = "LED2",       /* yellow  H7 */
 160                 .gpio                   = AT91_PIN_PB19,
 161                 .active_low             = 1,
 162                 .default_trigger        = "mmc0",       /* SD-card activity */
 163         }, {
 164                 .name                   = "LED3",       /* green  H2 */
 165                 .gpio                   = AT91_PIN_PB20,
 166                 .active_low             = 1,
 167                 .default_trigger        = "heartbeat",  /* blinky */
 168         }, {
 169                 .name                   = "LED4",       /* red  H3 */
 170                 .gpio                   = AT91_PIN_PC6,
 171                 .active_low             = 1,
 172                 .default_trigger        = "none",       /* connection lost */
 173         }, {
 174                 .name                   = "LED5",       /* yellow  H6 */
 175                 .gpio                   = AT91_PIN_PC7,
 176                 .active_low             = 1,
 177                 .default_trigger        = "none",       /* unsent data */
 178         }, {
 179                 .name                   = "LED6",       /* green  H1 */
 180                 .gpio                   = AT91_PIN_PC9,
 181                 .active_low             = 1,
 182                 .default_trigger        = "none",       /* snafu */
 183         }
 184 };
 185
 186
 187 /*
 188  * SPI devices
 189  */
 190 static struct spi_board_info pcontrol_g20_spi_devices[] = {
 191         {
 192                 .modalias       = "spidev",     /* HMI port  X4 */
 193                 .chip_select    = 1,
 194                 .max_speed_hz   = 50 * 1000 * 1000,
 195                 .bus_num        = 0,
 196         }, {
 197                 .modalias       = "spidev",     /* piggyback  A2 */
 198                 .chip_select    = 0,
 199                 .max_speed_hz   = 50 * 1000 * 1000,
 200                 .bus_num        = 1,
 201         },
 202 };
 203
 204
 205 static void __init pcontrol_g20_board_init(void)
 206 {
 207         stamp9g20_board_init();
 208         at91_add_device_usbh(&usbh_data);
 209         at91_add_device_eth(&macb_data);
 210         at91_add_device_i2c(pcontrol_g20_i2c_devices,
 211                 ARRAY_SIZE(pcontrol_g20_i2c_devices));
 212         add_device_pcontrol();
 213         at91_add_device_spi(pcontrol_g20_spi_devices,
 214                 ARRAY_SIZE(pcontrol_g20_spi_devices));
 215         at91_add_device_udc(&pcontrol_g20_udc_data);
 216         at91_gpio_leds(pcontrol_g20_leds,
 217                 ARRAY_SIZE(pcontrol_g20_leds));
 218         /* piggyback  A2 */
 219         at91_set_gpio_output(AT91_PIN_PB31, 1);
 220 }
 221
 222
 223 MACHINE_START(PCONTROL_G20, "PControl G20")
 224         /* Maintainer: pgsellmann@portner-elektronik.at */
 225         .boot_params    = AT91_SDRAM_BASE + 0x100,
 226         .timer          = &at91sam926x_timer,
 227         .map_io         = at91sam9260_map_io,
 228         .init_early     = pcontrol_g20_init_early,
 229         .init_irq       = init_irq,
 230         .init_machine   = pcontrol_g20_board_init,
 231 MACHINE_END