M7350/kernel/arch/arm/mach-at91/board-sam9m10g45ek.c

/*
 *  Board-specific setup code for the AT91SAM9M10G45 Evaluation Kit family
 *
 *  Covers: * AT91SAM9G45-EKES  board
 *          * AT91SAM9M10G45-EK board
 *
 *  Copyright (C) 2009 Atmel Corporation.
 *
 * 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.
 *
 */

#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/fb.h>
#include <linux/gpio_keys.h>
#include <linux/input.h>
#include <linux/leds.h>
#include <linux/atmel-mci.h>
#include <linux/delay.h>
#include <linux/pwm.h>
#include <linux/leds_pwm.h>

#include <linux/platform_data/at91_adc.h>

#include <mach/hardware.h>
#include <video/atmel_lcdc.h>
#include <media/soc_camera.h>
#include <media/atmel-isi.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"


static void __init ek_init_early(void)
{
	/* Initialize processor: 12.000 MHz crystal */
	at91_initialize(12000000);
}

/*
 * USB HS Host port (common to OHCI & EHCI)
 */
static struct at91_usbh_data __initdata ek_usbh_hs_data = {
	.ports		= 2,
	.vbus_pin	= {AT91_PIN_PD1, AT91_PIN_PD3},
	.vbus_pin_active_low = {1, 1},
	.overcurrent_pin= {-EINVAL, -EINVAL},
};


/*
 * USB HS Device port
 */
static struct usba_platform_data __initdata ek_usba_udc_data = {
	.vbus_pin	= AT91_PIN_PB19,
};


/*
 * SPI devices.
 */
static struct spi_board_info ek_spi_devices[] = {
	{	/* DataFlash chip */
		.modalias	= "mtd_dataflash",
		.chip_select	= 0,
		.max_speed_hz	= 15 * 1000 * 1000,
		.bus_num	= 0,
	},
};


/*
 * MCI (SD/MMC)
 */
static struct mci_platform_data __initdata mci0_data = {
	.slot[0] = {
		.bus_width	= 4,
		.detect_pin	= AT91_PIN_PD10,
		.wp_pin		= -EINVAL,
	},
};

static struct mci_platform_data __initdata mci1_data = {
	.slot[0] = {
		.bus_width	= 4,
		.detect_pin	= AT91_PIN_PD11,
		.wp_pin		= AT91_PIN_PD29,
	},
};


/*
 * MACB Ethernet device
 */
static struct macb_platform_data __initdata ek_macb_data = {
	.phy_irq_pin	= AT91_PIN_PD5,
	.is_rmii	= 1,
};


/*
 * NAND flash
 */
static struct mtd_partition __initdata ek_nand_partition[] = {
	{
		.name	= "Partition 1",
		.offset	= 0,
		.size	= SZ_64M,
	},
	{
		.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_PC8,
	.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);
}


/*
 *  ISI
 */
static struct isi_platform_data __initdata isi_data = {
	.frate			= ISI_CFG1_FRATE_CAPTURE_ALL,
	/* to use codec and preview path simultaneously */
	.full_mode		= 1,
	.data_width_flags	= ISI_DATAWIDTH_8 | ISI_DATAWIDTH_10,
	/* ISI_MCK is provided by programmable clock or external clock */
	.mck_hz			= 25000000,
};


/*
 * soc-camera OV2640
 */
#if defined(CONFIG_SOC_CAMERA_OV2640) || \
	defined(CONFIG_SOC_CAMERA_OV2640_MODULE)
static unsigned long isi_camera_query_bus_param(struct soc_camera_link *link)
{
	/* ISI board for ek using default 8-bits connection */
	return SOCAM_DATAWIDTH_8;
}

static int i2c_camera_power(struct device *dev, int on)
{
	/* enable or disable the camera */
	pr_debug("%s: %s the camera\n", __func__, on ? "ENABLE" : "DISABLE");
	at91_set_gpio_output(AT91_PIN_PD13, !on);

	if (!on)
		goto out;

	/* If enabled, give a reset impulse */
	at91_set_gpio_output(AT91_PIN_PD12, 0);
	msleep(20);
	at91_set_gpio_output(AT91_PIN_PD12, 1);
	msleep(100);

out:
	return 0;
}

static struct i2c_board_info i2c_camera = {
	I2C_BOARD_INFO("ov2640", 0x30),
};

static struct soc_camera_link iclink_ov2640 = {
	.bus_id			= 0,
	.board_info		= &i2c_camera,
	.i2c_adapter_id		= 0,
	.power			= i2c_camera_power,
	.query_bus_param	= isi_camera_query_bus_param,
};

static struct platform_device isi_ov2640 = {
	.name	= "soc-camera-pdrv",
	.id	= 0,
	.dev	= {
		.platform_data = &iclink_ov2640,
	},
};
#endif


/*
 * LCD Controller
 */
#if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
static struct fb_videomode at91_tft_vga_modes[] = {
	{
		.name           = "LG",
		.refresh	= 60,
		.xres		= 480,		.yres		= 272,
		.pixclock	= KHZ2PICOS(9000),

		.left_margin	= 1,		.right_margin	= 1,
		.upper_margin	= 40,		.lower_margin	= 1,
		.hsync_len	= 45,		.vsync_len	= 1,

		.sync		= 0,
		.vmode		= FB_VMODE_NONINTERLACED,
	},
};

static struct fb_monspecs at91fb_default_monspecs = {
	.manufacturer	= "LG",
	.monitor        = "LB043WQ1",

	.modedb		= at91_tft_vga_modes,
	.modedb_len	= ARRAY_SIZE(at91_tft_vga_modes),
	.hfmin		= 15000,
	.hfmax		= 17640,
	.vfmin		= 57,
	.vfmax		= 67,
};

#define AT91SAM9G45_DEFAULT_LCDCON2 	(ATMEL_LCDC_MEMOR_LITTLE \
					| ATMEL_LCDC_DISTYPE_TFT \
					| ATMEL_LCDC_CLKMOD_ALWAYSACTIVE)

/* Driver datas */
static struct atmel_lcdfb_pdata __initdata ek_lcdc_data = {
	.lcdcon_is_backlight		= true,
	.default_bpp			= 32,
	.default_dmacon			= ATMEL_LCDC_DMAEN,
	.default_lcdcon2		= AT91SAM9G45_DEFAULT_LCDCON2,
	.default_monspecs		= &at91fb_default_monspecs,
	.guard_time			= 9,
	.lcd_wiring_mode		= ATMEL_LCDC_WIRING_RGB,
};

#else
static struct atmel_lcdfb_pdata __initdata ek_lcdc_data;
#endif


/*
 * ADCs and touchscreen
 */
static struct at91_adc_data ek_adc_data = {
	.channels_used = BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) | BIT(6) | BIT(7),
	.use_external_triggers = true,
	.vref = 3300,
	.touchscreen_type = ATMEL_ADC_TOUCHSCREEN_4WIRE,
};

/*
 * GPIO Buttons
 */
#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
static struct gpio_keys_button ek_buttons[] = {
	{	/* BP1, "leftclic" */
		.code		= BTN_LEFT,
		.gpio		= AT91_PIN_PB6,
		.active_low	= 1,
		.desc		= "left_click",
		.wakeup		= 1,
	},
	{	/* BP2, "rightclic" */
		.code		= BTN_RIGHT,
		.gpio		= AT91_PIN_PB7,
		.active_low	= 1,
		.desc		= "right_click",
		.wakeup		= 1,
	},
		/* BP3, "joystick" */
	{
		.code		= KEY_LEFT,
		.gpio		= AT91_PIN_PB14,
		.active_low	= 1,
		.desc		= "Joystick Left",
	},
	{
		.code		= KEY_RIGHT,
		.gpio		= AT91_PIN_PB15,
		.active_low	= 1,
		.desc		= "Joystick Right",
	},
	{
		.code		= KEY_UP,
		.gpio		= AT91_PIN_PB16,
		.active_low	= 1,
		.desc		= "Joystick Up",
	},
	{
		.code		= KEY_DOWN,
		.gpio		= AT91_PIN_PB17,
		.active_low	= 1,
		.desc		= "Joystick Down",
	},
	{
		.code		= KEY_ENTER,
		.gpio		= AT91_PIN_PB18,
		.active_low	= 1,
		.desc		= "Joystick Press",
	},
};

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)
{
	int i;

	for (i = 0; i < ARRAY_SIZE(ek_buttons); i++) {
		at91_set_GPIO_periph(ek_buttons[i].gpio, 1);
		at91_set_deglitch(ek_buttons[i].gpio, 1);
	}

	platform_device_register(&ek_button_device);
}
#else
static void __init ek_add_device_buttons(void) {}
#endif


/*
 * AC97
 * reset_pin is not connected: NRST
 */
static struct ac97c_platform_data ek_ac97_data = {
	.reset_pin	= -EINVAL,
};


/*
 * LEDs ... these could all be PWM-driven, for variable brightness
 */
static struct gpio_led ek_leds[] = {
	{	/* "top" led, red, powerled */
		.name			= "d8",
		.gpio			= AT91_PIN_PD30,
		.default_trigger	= "heartbeat",
	},
	{	/* "left" led, green, userled2, pwm3 */
		.name			= "d6",
		.gpio			= AT91_PIN_PD0,
		.active_low		= 1,
		.default_trigger	= "nand-disk",
	},
#if !IS_ENABLED(CONFIG_LEDS_PWM)
	{	/* "right" led, green, userled1, pwm1 */
		.name			= "d7",
		.gpio			= AT91_PIN_PD31,
		.active_low		= 1,
		.default_trigger	= "mmc0",
	},
#endif
};


/*
 * PWM Leds
 */
static struct pwm_lookup pwm_lookup[] = {
	PWM_LOOKUP("at91sam9rl-pwm", 1, "leds_pwm", "d7",
		   5000, PWM_POLARITY_INVERSED),
};

#if IS_ENABLED(CONFIG_LEDS_PWM)
static struct led_pwm pwm_leds[] = {
	{	/* "right" led, green, userled1, pwm1 */
		.name = "d7",
		.max_brightness	= 255,
	},
};

static struct led_pwm_platform_data pwm_data = {
	.num_leds	= ARRAY_SIZE(pwm_leds),
	.leds		= pwm_leds,
};

static struct platform_device leds_pwm = {
	.name	= "leds_pwm",
	.id	= -1,
	.dev	= {
		.platform_data = &pwm_data,
	},
};
#endif

static struct platform_device *devices[] __initdata = {
#if defined(CONFIG_SOC_CAMERA_OV2640) || \
	defined(CONFIG_SOC_CAMERA_OV2640_MODULE)
	&isi_ov2640,
#endif
#if IS_ENABLED(CONFIG_LEDS_PWM)
	&leds_pwm,
#endif
};

static void __init ek_board_init(void)
{
	at91_register_devices();

	/* Serial */
	/* DGBU on ttyS0. (Rx & Tx only) */
	at91_register_uart(0, 0, 0);

	/* USART0 not connected on the -EK board */
	/* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */
	at91_register_uart(AT91SAM9G45_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
	at91_add_device_serial();
	/* USB HS Host */
	at91_add_device_usbh_ohci(&ek_usbh_hs_data);
	at91_add_device_usbh_ehci(&ek_usbh_hs_data);
	/* USB HS Device */
	at91_add_device_usba(&ek_usba_udc_data);
	/* SPI */
	at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
	/* MMC */
	at91_add_device_mci(0, &mci0_data);
	at91_add_device_mci(1, &mci1_data);
	/* Ethernet */
	at91_add_device_eth(&ek_macb_data);
	/* NAND */
	ek_add_device_nand();
	/* I2C */
	at91_add_device_i2c(0, NULL, 0);
	/* ISI, using programmable clock as ISI_MCK */
	at91_add_device_isi(&isi_data, true);
	/* LCD Controller */
	at91_add_device_lcdc(&ek_lcdc_data);
	/* ADC and touchscreen */
	at91_add_device_adc(&ek_adc_data);
	/* Push Buttons */
	ek_add_device_buttons();
	/* AC97 */
	at91_add_device_ac97(&ek_ac97_data);
	/* LEDs */
	at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
	pwm_add_table(pwm_lookup, ARRAY_SIZE(pwm_lookup));
#if IS_ENABLED(CONFIG_LEDS_PWM)
	at91_add_device_pwm(1 << AT91_PWM1);
#endif
	/* Other platform devices */
	platform_add_devices(devices, ARRAY_SIZE(devices));
}

MACHINE_START(AT91SAM9M10G45EK, "Atmel AT91SAM9M10G45-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