| /* |
| * Copyright (C) 2005 SAN People |
| * Copyright (C) 2008 Atmel |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| #include <linux/types.h> |
| #include <linux/gpio.h> |
| #include <linux/init.h> |
| #include <linux/mm.h> |
| #include <linux/module.h> |
| #include <linux/platform_device.h> |
| #include <linux/spi/spi.h> |
| #include <linux/spi/at73c213.h> |
| #include <linux/gpio_keys.h> |
| #include <linux/input.h> |
| #include <linux/clk.h> |
| #include <linux/regulator/machine.h> |
| #include <linux/regulator/fixed.h> |
| #include <linux/regulator/consumer.h> |
| |
| #include <linux/platform_data/at91_adc.h> |
| |
| #include <mach/hardware.h> |
| #include <asm/setup.h> |
| #include <asm/mach-types.h> |
| #include <asm/irq.h> |
| |
| #include <asm/mach/arch.h> |
| #include <asm/mach/map.h> |
| #include <asm/mach/irq.h> |
| |
| #include <mach/at91sam9_smc.h> |
| #include <mach/system_rev.h> |
| |
| #include "at91_aic.h" |
| #include "board.h" |
| #include "sam9_smc.h" |
| #include "generic.h" |
| #include "gpio.h" |
| |
| /* |
| * board revision encoding |
| * bit 0: |
| * 0 => 1 sd/mmc slot |
| * 1 => 2 sd/mmc slots connectors (board from revision C) |
| */ |
| #define HAVE_2MMC (1 << 0) |
| static int inline ek_have_2mmc(void) |
| { |
| return machine_is_at91sam9g20ek_2mmc() || (system_rev & HAVE_2MMC); |
| } |
| |
| |
| static void __init ek_init_early(void) |
| { |
| /* Initialize processor: 18.432 MHz crystal */ |
| at91_initialize(18432000); |
| } |
| |
| /* |
| * USB Host port |
| */ |
| static struct at91_usbh_data __initdata ek_usbh_data = { |
| .ports = 2, |
| .vbus_pin = {-EINVAL, -EINVAL}, |
| .overcurrent_pin= {-EINVAL, -EINVAL}, |
| }; |
| |
| /* |
| * USB Device port |
| */ |
| static struct at91_udc_data __initdata ek_udc_data = { |
| .vbus_pin = AT91_PIN_PC5, |
| .pullup_pin = -EINVAL, /* pull-up driven by UDC */ |
| }; |
| |
| |
| /* |
| * SPI devices. |
| */ |
| static struct spi_board_info ek_spi_devices[] = { |
| #if !IS_ENABLED(CONFIG_MMC_ATMELMCI) |
| { /* DataFlash chip */ |
| .modalias = "mtd_dataflash", |
| .chip_select = 1, |
| .max_speed_hz = 15 * 1000 * 1000, |
| .bus_num = 0, |
| }, |
| #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD) |
| { /* DataFlash card */ |
| .modalias = "mtd_dataflash", |
| .chip_select = 0, |
| .max_speed_hz = 15 * 1000 * 1000, |
| .bus_num = 0, |
| }, |
| #endif |
| #endif |
| }; |
| |
| |
| /* |
| * MACB Ethernet device |
| */ |
| static struct macb_platform_data __initdata ek_macb_data = { |
| .phy_irq_pin = AT91_PIN_PA7, |
| .is_rmii = 1, |
| }; |
| |
| static void __init ek_add_device_macb(void) |
| { |
| if (ek_have_2mmc()) |
| ek_macb_data.phy_irq_pin = AT91_PIN_PB0; |
| |
| at91_add_device_eth(&ek_macb_data); |
| } |
| |
| /* |
| * NAND flash |
| */ |
| static struct mtd_partition __initdata ek_nand_partition[] = { |
| { |
| .name = "Bootstrap", |
| .offset = 0, |
| .size = 4 * SZ_1M, |
| }, |
| { |
| .name = "Partition 1", |
| .offset = MTDPART_OFS_NXTBLK, |
| .size = 60 * SZ_1M, |
| }, |
| { |
| .name = "Partition 2", |
| .offset = MTDPART_OFS_NXTBLK, |
| .size = MTDPART_SIZ_FULL, |
| }, |
| }; |
| |
| /* det_pin is not connected */ |
| static struct atmel_nand_data __initdata ek_nand_data = { |
| .ale = 21, |
| .cle = 22, |
| .rdy_pin = AT91_PIN_PC13, |
| .enable_pin = AT91_PIN_PC14, |
| .det_pin = -EINVAL, |
| .ecc_mode = NAND_ECC_SOFT, |
| .on_flash_bbt = 1, |
| .parts = ek_nand_partition, |
| .num_parts = ARRAY_SIZE(ek_nand_partition), |
| }; |
| |
| static struct sam9_smc_config __initdata ek_nand_smc_config = { |
| .ncs_read_setup = 0, |
| .nrd_setup = 2, |
| .ncs_write_setup = 0, |
| .nwe_setup = 2, |
| |
| .ncs_read_pulse = 4, |
| .nrd_pulse = 4, |
| .ncs_write_pulse = 4, |
| .nwe_pulse = 4, |
| |
| .read_cycle = 7, |
| .write_cycle = 7, |
| |
| .mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE, |
| .tdf_cycles = 3, |
| }; |
| |
| static void __init ek_add_device_nand(void) |
| { |
| ek_nand_data.bus_width_16 = board_have_nand_16bit(); |
| /* setup bus-width (8 or 16) */ |
| if (ek_nand_data.bus_width_16) |
| ek_nand_smc_config.mode |= AT91_SMC_DBW_16; |
| else |
| ek_nand_smc_config.mode |= AT91_SMC_DBW_8; |
| |
| /* configure chip-select 3 (NAND) */ |
| sam9_smc_configure(0, 3, &ek_nand_smc_config); |
| |
| at91_add_device_nand(&ek_nand_data); |
| } |
| |
| |
| /* |
| * MCI (SD/MMC) |
| * wp_pin and vcc_pin are not connected |
| */ |
| static struct mci_platform_data __initdata ek_mmc_data = { |
| .slot[1] = { |
| .bus_width = 4, |
| .detect_pin = AT91_PIN_PC9, |
| .wp_pin = -EINVAL, |
| }, |
| |
| }; |
| |
| static void __init ek_add_device_mmc(void) |
| { |
| if (ek_have_2mmc()) { |
| ek_mmc_data.slot[0].bus_width = 4; |
| ek_mmc_data.slot[0].detect_pin = AT91_PIN_PC2; |
| ek_mmc_data.slot[0].wp_pin = -1; |
| } |
| at91_add_device_mci(0, &ek_mmc_data); |
| } |
| |
| /* |
| * LEDs |
| */ |
| static struct gpio_led ek_leds[] = { |
| { /* "bottom" led, green, userled1 to be defined */ |
| .name = "ds5", |
| .gpio = AT91_PIN_PA6, |
| .active_low = 1, |
| .default_trigger = "none", |
| }, |
| { /* "power" led, yellow */ |
| .name = "ds1", |
| .gpio = AT91_PIN_PA9, |
| .default_trigger = "heartbeat", |
| } |
| }; |
| |
| static void __init ek_add_device_gpio_leds(void) |
| { |
| if (ek_have_2mmc()) { |
| ek_leds[0].gpio = AT91_PIN_PB8; |
| ek_leds[1].gpio = AT91_PIN_PB9; |
| } |
| |
| at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds)); |
| } |
| |
| /* |
| * GPIO Buttons |
| */ |
| #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE) |
| static struct gpio_keys_button ek_buttons[] = { |
| { |
| .gpio = AT91_PIN_PA30, |
| .code = BTN_3, |
| .desc = "Button 3", |
| .active_low = 1, |
| .wakeup = 1, |
| }, |
| { |
| .gpio = AT91_PIN_PA31, |
| .code = BTN_4, |
| .desc = "Button 4", |
| .active_low = 1, |
| .wakeup = 1, |
| } |
| }; |
| |
| static struct gpio_keys_platform_data ek_button_data = { |
| .buttons = ek_buttons, |
| .nbuttons = ARRAY_SIZE(ek_buttons), |
| }; |
| |
| static struct platform_device ek_button_device = { |
| .name = "gpio-keys", |
| .id = -1, |
| .num_resources = 0, |
| .dev = { |
| .platform_data = &ek_button_data, |
| } |
| }; |
| |
| static void __init ek_add_device_buttons(void) |
| { |
| at91_set_gpio_input(AT91_PIN_PA30, 1); /* btn3 */ |
| at91_set_deglitch(AT91_PIN_PA30, 1); |
| at91_set_gpio_input(AT91_PIN_PA31, 1); /* btn4 */ |
| at91_set_deglitch(AT91_PIN_PA31, 1); |
| |
| platform_device_register(&ek_button_device); |
| } |
| #else |
| static void __init ek_add_device_buttons(void) {} |
| #endif |
| |
| /* |
| * ADCs |
| */ |
| |
| static struct at91_adc_data ek_adc_data = { |
| .channels_used = BIT(0) | BIT(1) | BIT(2) | BIT(3), |
| .use_external_triggers = true, |
| .vref = 3300, |
| }; |
| |
| #if defined(CONFIG_REGULATOR_FIXED_VOLTAGE) || defined(CONFIG_REGULATOR_FIXED_VOLTAGE_MODULE) |
| static struct regulator_consumer_supply ek_audio_consumer_supplies[] = { |
| REGULATOR_SUPPLY("AVDD", "0-001b"), |
| REGULATOR_SUPPLY("HPVDD", "0-001b"), |
| REGULATOR_SUPPLY("DBVDD", "0-001b"), |
| REGULATOR_SUPPLY("DCVDD", "0-001b"), |
| }; |
| |
| static struct regulator_init_data ek_avdd_reg_init_data = { |
| .constraints = { |
| .name = "3V3", |
| .valid_ops_mask = REGULATOR_CHANGE_STATUS, |
| }, |
| .consumer_supplies = ek_audio_consumer_supplies, |
| .num_consumer_supplies = ARRAY_SIZE(ek_audio_consumer_supplies), |
| }; |
| |
| static struct fixed_voltage_config ek_vdd_pdata = { |
| .supply_name = "board-3V3", |
| .microvolts = 3300000, |
| .gpio = -EINVAL, |
| .enabled_at_boot = 0, |
| .init_data = &ek_avdd_reg_init_data, |
| }; |
| static struct platform_device ek_voltage_regulator = { |
| .name = "reg-fixed-voltage", |
| .id = -1, |
| .num_resources = 0, |
| .dev = { |
| .platform_data = &ek_vdd_pdata, |
| }, |
| }; |
| static void __init ek_add_regulators(void) |
| { |
| platform_device_register(&ek_voltage_regulator); |
| } |
| #else |
| static void __init ek_add_regulators(void) {} |
| #endif |
| |
| |
| static struct i2c_board_info __initdata ek_i2c_devices[] = { |
| { |
| I2C_BOARD_INFO("24c512", 0x50) |
| }, |
| { |
| I2C_BOARD_INFO("wm8731", 0x1b) |
| }, |
| }; |
| |
| static struct platform_device sam9g20ek_audio_device = { |
| .name = "at91sam9g20ek-audio", |
| .id = -1, |
| }; |
| |
| static void __init ek_add_device_audio(void) |
| { |
| platform_device_register(&sam9g20ek_audio_device); |
| } |
| |
| |
| static void __init ek_board_init(void) |
| { |
| /* Serial */ |
| /* DBGU on ttyS0. (Rx & Tx only) */ |
| at91_register_uart(0, 0, 0); |
| |
| /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */ |
| at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS |
| | ATMEL_UART_DTR | ATMEL_UART_DSR | ATMEL_UART_DCD |
| | ATMEL_UART_RI); |
| |
| /* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */ |
| at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS); |
| at91_add_device_serial(); |
| /* USB Host */ |
| at91_add_device_usbh(&ek_usbh_data); |
| /* USB Device */ |
| at91_add_device_udc(&ek_udc_data); |
| /* SPI */ |
| at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices)); |
| /* NAND */ |
| ek_add_device_nand(); |
| /* Ethernet */ |
| ek_add_device_macb(); |
| /* Regulators */ |
| ek_add_regulators(); |
| /* MMC */ |
| ek_add_device_mmc(); |
| /* I2C */ |
| at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices)); |
| /* LEDs */ |
| ek_add_device_gpio_leds(); |
| /* Push Buttons */ |
| ek_add_device_buttons(); |
| /* ADCs */ |
| at91_add_device_adc(&ek_adc_data); |
| /* PCK0 provides MCLK to the WM8731 */ |
| at91_set_B_periph(AT91_PIN_PC1, 0); |
| /* SSC (for WM8731) */ |
| at91_add_device_ssc(AT91SAM9260_ID_SSC, ATMEL_SSC_TX); |
| ek_add_device_audio(); |
| } |
| |
| MACHINE_START(AT91SAM9G20EK, "Atmel AT91SAM9G20-EK") |
| /* Maintainer: Atmel */ |
| .init_time = at91_init_time, |
| .map_io = at91_map_io, |
| .handle_irq = at91_aic_handle_irq, |
| .init_early = ek_init_early, |
| .init_irq = at91_init_irq_default, |
| .init_machine = ek_board_init, |
| MACHINE_END |
| |
| MACHINE_START(AT91SAM9G20EK_2MMC, "Atmel AT91SAM9G20-EK 2 MMC Slot Mod") |
| /* Maintainer: Atmel */ |
| .init_time = at91_init_time, |
| .map_io = at91_map_io, |
| .handle_irq = at91_aic_handle_irq, |
| .init_early = ek_init_early, |
| .init_irq = at91_init_irq_default, |
| .init_machine = ek_board_init, |
| MACHINE_END |