arch/blackfin/mach-bf538/boards/ezkit.c

/*
 * File:         arch/blackfin/mach-bf538/boards/ezkit.c
 * Based on:     arch/blackfin/mach-bf537/boards/ezkit.c
 * Author:       Aidan Williams <aidan@nicta.com.au>
 *
 * Created:
 * Description:
 *
 * Modified:
 *               Copyright 2005 National ICT Australia (NICTA)
 *               Copyright 2004-2008 Analog Devices Inc.
 *
 * Bugs:         Enter bugs at http://blackfin.uclinux.org/
 *
 * 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, see the file COPYING, or write
 * to the Free Software Foundation, Inc.,
 * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/spi/spi.h>
#include <linux/spi/flash.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <asm/bfin5xx_spi.h>
#include <asm/dma.h>
#include <asm/gpio.h>
#include <asm/nand.h>
#include <asm/portmux.h>
#include <asm/dpmc.h>
#include <linux/input.h>

/*
 * Name the Board for the /proc/cpuinfo
 */
const char bfin_board_name[] = "ADI BF538-EZKIT";

/*
 *  Driver needs to know address, irq and flag pin.
 */


#if defined(CONFIG_RTC_DRV_BFIN) || defined(CONFIG_RTC_DRV_BFIN_MODULE)
static struct platform_device rtc_device = {
	.name = "rtc-bfin",
	.id   = -1,
};
#endif

#if defined(CONFIG_SERIAL_BFIN) || defined(CONFIG_SERIAL_BFIN_MODULE)
static struct resource bfin_uart_resources[] = {
#ifdef CONFIG_SERIAL_BFIN_UART0
	{
		.start = 0xFFC00400,
		.end = 0xFFC004FF,
		.flags = IORESOURCE_MEM,
	},
#endif
#ifdef CONFIG_SERIAL_BFIN_UART1
	{
		.start = 0xFFC02000,
		.end = 0xFFC020FF,
		.flags = IORESOURCE_MEM,
	},
#endif
#ifdef CONFIG_SERIAL_BFIN_UART2
	{
		.start = 0xFFC02100,
		.end = 0xFFC021FF,
		.flags = IORESOURCE_MEM,
	},
#endif
};

static struct platform_device bfin_uart_device = {
	.name = "bfin-uart",
	.id = 1,
	.num_resources = ARRAY_SIZE(bfin_uart_resources),
	.resource = bfin_uart_resources,
};
#endif

#if defined(CONFIG_BFIN_SIR) || defined(CONFIG_BFIN_SIR_MODULE)
static struct resource bfin_sir_resources[] = {
#ifdef CONFIG_BFIN_SIR0
	{
		.start = 0xFFC00400,
		.end = 0xFFC004FF,
		.flags = IORESOURCE_MEM,
	},
#endif
#ifdef CONFIG_BFIN_SIR1
	{
		.start = 0xFFC02000,
		.end = 0xFFC020FF,
		.flags = IORESOURCE_MEM,
	},
#endif
#ifdef CONFIG_BFIN_SIR2
	{
		.start = 0xFFC02100,
		.end = 0xFFC021FF,
		.flags = IORESOURCE_MEM,
	},
#endif
};

static struct platform_device bfin_sir_device = {
	.name = "bfin_sir",
	.id = 0,
	.num_resources = ARRAY_SIZE(bfin_sir_resources),
	.resource = bfin_sir_resources,
};
#endif

/*
 *  USB-LAN EzExtender board
 *  Driver needs to know address, irq and flag pin.
 */
#if defined(CONFIG_SMC91X) || defined(CONFIG_SMC91X_MODULE)
static struct resource smc91x_resources[] = {
	{
		.name = "smc91x-regs",
		.start = 0x20310300,
		.end = 0x20310300 + 16,
		.flags = IORESOURCE_MEM,
	}, {
		.start = IRQ_PF0,
		.end = IRQ_PF0,
		.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL,
	},
};
static struct platform_device smc91x_device = {
	.name = "smc91x",
	.id = 0,
	.num_resources = ARRAY_SIZE(smc91x_resources),
	.resource = smc91x_resources,
};
#endif

#if defined(CONFIG_SPI_BFIN) || defined(CONFIG_SPI_BFIN_MODULE)
/* all SPI peripherals info goes here */
#if defined(CONFIG_MTD_M25P80) \
	|| defined(CONFIG_MTD_M25P80_MODULE)
/* SPI flash chip (m25p16) */
static struct mtd_partition bfin_spi_flash_partitions[] = {
	{
		.name = "bootloader(spi)",
		.size = 0x00040000,
		.offset = 0,
		.mask_flags = MTD_CAP_ROM
	}, {
		.name = "linux kernel(spi)",
		.size = 0x1c0000,
		.offset = 0x40000
	}
};

static struct flash_platform_data bfin_spi_flash_data = {
	.name = "m25p80",
	.parts = bfin_spi_flash_partitions,
	.nr_parts = ARRAY_SIZE(bfin_spi_flash_partitions),
	.type = "m25p16",
};

static struct bfin5xx_spi_chip spi_flash_chip_info = {
	.enable_dma = 0,         /* use dma transfer with this chip*/
	.bits_per_word = 8,
	.cs_change_per_word = 0,
};
#endif

#if defined(CONFIG_TOUCHSCREEN_AD7879) || defined(CONFIG_TOUCHSCREEN_AD7879_MODULE)
#include <linux/spi/ad7879.h>
static const struct ad7879_platform_data bfin_ad7879_ts_info = {
	.model			= 7879,	/* Model = AD7879 */
	.x_plate_ohms		= 620,	/* 620 Ohm from the touch datasheet */
	.pressure_max		= 10000,
	.pressure_min		= 0,
	.first_conversion_delay = 3,	/* wait 512us before do a first conversion */
	.acquisition_time 	= 1,	/* 4us acquisition time per sample */
	.median			= 2,	/* do 8 measurements */
	.averaging 		= 1,	/* take the average of 4 middle samples */
	.pen_down_acc_interval 	= 255,	/* 9.4 ms */
	.gpio_output		= 1,	/* configure AUX/VBAT/GPIO as GPIO output */
	.gpio_default 		= 1,	/* During initialization set GPIO = HIGH */
};
#endif

#if defined(CONFIG_TOUCHSCREEN_AD7879_SPI) || defined(CONFIG_TOUCHSCREEN_AD7879_SPI_MODULE)
static struct bfin5xx_spi_chip spi_ad7879_chip_info = {
	.enable_dma = 0,
	.bits_per_word = 16,
};
#endif

#if defined(CONFIG_FB_BFIN_LQ035Q1) || defined(CONFIG_FB_BFIN_LQ035Q1_MODULE)
#include <asm/bfin-lq035q1.h>

static struct bfin_lq035q1fb_disp_info bfin_lq035q1_data = {
	.mode = 	LQ035_NORM | LQ035_RGB | LQ035_RL | LQ035_TB,
	.use_bl = 	0,	/* let something else control the LCD Blacklight */
	.gpio_bl =	GPIO_PF7,
};

static struct resource bfin_lq035q1_resources[] = {
	{
		.start = IRQ_PPI_ERROR,
		.end = IRQ_PPI_ERROR,
		.flags = IORESOURCE_IRQ,
	},
};

static struct platform_device bfin_lq035q1_device = {
	.name		= "bfin-lq035q1",
	.id		= -1,
	.num_resources 	= ARRAY_SIZE(bfin_lq035q1_resources),
	.resource 	= bfin_lq035q1_resources,
	.dev		= {
		.platform_data = &bfin_lq035q1_data,
	},
};
#endif

#if defined(CONFIG_SPI_SPIDEV) || defined(CONFIG_SPI_SPIDEV_MODULE)
static struct bfin5xx_spi_chip spidev_chip_info = {
	.enable_dma = 0,
	.bits_per_word = 8,
};
#endif

#if defined(CONFIG_FB_BFIN_LQ035Q1) || defined(CONFIG_FB_BFIN_LQ035Q1_MODULE)
static struct bfin5xx_spi_chip lq035q1_spi_chip_info = {
	.enable_dma	= 0,
	.bits_per_word	= 8,
};
#endif

static struct spi_board_info bf538_spi_board_info[] __initdata = {
#if defined(CONFIG_MTD_M25P80) \
	|| defined(CONFIG_MTD_M25P80_MODULE)
	{
		/* the modalias must be the same as spi device driver name */
		.modalias = "m25p80", /* Name of spi_driver for this device */
		.max_speed_hz = 25000000,     /* max spi clock (SCK) speed in HZ */
		.bus_num = 0, /* Framework bus number */
		.chip_select = 1, /* SPI_SSEL1*/
		.platform_data = &bfin_spi_flash_data,
		.controller_data = &spi_flash_chip_info,
		.mode = SPI_MODE_3,
	},
#endif
#if defined(CONFIG_TOUCHSCREEN_AD7879_SPI) || defined(CONFIG_TOUCHSCREEN_AD7879_SPI_MODULE)
	{
		.modalias = "ad7879",
		.platform_data = &bfin_ad7879_ts_info,
		.irq = IRQ_PF3,
		.max_speed_hz = 5000000,     /* max spi clock (SCK) speed in HZ */
		.bus_num = 0,
		.chip_select = 1,
		.controller_data = &spi_ad7879_chip_info,
		.mode = SPI_CPHA | SPI_CPOL,
	},
#endif
#if defined(CONFIG_FB_BFIN_LQ035Q1) || defined(CONFIG_FB_BFIN_LQ035Q1_MODULE)
	{
		.modalias = "bfin-lq035q1-spi",
		.max_speed_hz = 20000000,     /* max spi clock (SCK) speed in HZ */
		.bus_num = 0,
		.chip_select = 2,
		.controller_data = &lq035q1_spi_chip_info,
		.mode = SPI_CPHA | SPI_CPOL,
	},
#endif
#if defined(CONFIG_SPI_SPIDEV) || defined(CONFIG_SPI_SPIDEV_MODULE)
	{
		.modalias = "spidev",
		.max_speed_hz = 3125000,     /* max spi clock (SCK) speed in HZ */
		.bus_num = 0,
		.chip_select = 1,
		.controller_data = &spidev_chip_info,
	},
#endif
};

/* SPI (0) */
static struct resource bfin_spi0_resource[] = {
	[0] = {
		.start = SPI0_REGBASE,
		.end   = SPI0_REGBASE + 0xFF,
		.flags = IORESOURCE_MEM,
	},
	[1] = {
		.start = CH_SPI0,
		.end   = CH_SPI0,
		.flags = IORESOURCE_IRQ,
	}
};

/* SPI (1) */
static struct resource bfin_spi1_resource[] = {
	[0] = {
		.start = SPI1_REGBASE,
		.end   = SPI1_REGBASE + 0xFF,
		.flags = IORESOURCE_MEM,
	},
	[1] = {
		.start = CH_SPI1,
		.end   = CH_SPI1,
		.flags = IORESOURCE_IRQ,
	}
};

/* SPI (2) */
static struct resource bfin_spi2_resource[] = {
	[0] = {
		.start = SPI2_REGBASE,
		.end   = SPI2_REGBASE + 0xFF,
		.flags = IORESOURCE_MEM,
	},
	[1] = {
		.start = CH_SPI2,
		.end   = CH_SPI2,
		.flags = IORESOURCE_IRQ,
	}
};

/* SPI controller data */
static struct bfin5xx_spi_master bf538_spi_master_info0 = {
	.num_chipselect = 8,
	.enable_dma = 1,  /* master has the ability to do dma transfer */
	.pin_req = {P_SPI0_SCK, P_SPI0_MISO, P_SPI0_MOSI, 0},
};

static struct platform_device bf538_spi_master0 = {
	.name = "bfin-spi",
	.id = 0, /* Bus number */
	.num_resources = ARRAY_SIZE(bfin_spi0_resource),
	.resource = bfin_spi0_resource,
	.dev = {
		.platform_data = &bf538_spi_master_info0, /* Passed to driver */
		},
};

static struct bfin5xx_spi_master bf538_spi_master_info1 = {
	.num_chipselect = 8,
	.enable_dma = 1,  /* master has the ability to do dma transfer */
	.pin_req = {P_SPI1_SCK, P_SPI1_MISO, P_SPI1_MOSI, 0},
};

static struct platform_device bf538_spi_master1 = {
	.name = "bfin-spi",
	.id = 1, /* Bus number */
	.num_resources = ARRAY_SIZE(bfin_spi1_resource),
	.resource = bfin_spi1_resource,
	.dev = {
		.platform_data = &bf538_spi_master_info1, /* Passed to driver */
		},
};

static struct bfin5xx_spi_master bf538_spi_master_info2 = {
	.num_chipselect = 8,
	.enable_dma = 1,  /* master has the ability to do dma transfer */
	.pin_req = {P_SPI2_SCK, P_SPI2_MISO, P_SPI2_MOSI, 0},
};

static struct platform_device bf538_spi_master2 = {
	.name = "bfin-spi",
	.id = 2, /* Bus number */
	.num_resources = ARRAY_SIZE(bfin_spi2_resource),
	.resource = bfin_spi2_resource,
	.dev = {
		.platform_data = &bf538_spi_master_info2, /* Passed to driver */
		},
};

#endif  /* spi master and devices */

#if defined(CONFIG_I2C_BLACKFIN_TWI) || defined(CONFIG_I2C_BLACKFIN_TWI_MODULE)
static struct resource bfin_twi0_resource[] = {
	[0] = {
		.start = TWI0_REGBASE,
		.end   = TWI0_REGBASE + 0xFF,
		.flags = IORESOURCE_MEM,
	},
	[1] = {
		.start = IRQ_TWI0,
		.end   = IRQ_TWI0,
		.flags = IORESOURCE_IRQ,
	},
};

static struct platform_device i2c_bfin_twi0_device = {
	.name = "i2c-bfin-twi",
	.id = 0,
	.num_resources = ARRAY_SIZE(bfin_twi0_resource),
	.resource = bfin_twi0_resource,
};

#if !defined(CONFIG_BF542)	/* The BF542 only has 1 TWI */
static struct resource bfin_twi1_resource[] = {
	[0] = {
		.start = TWI1_REGBASE,
		.end   = TWI1_REGBASE + 0xFF,
		.flags = IORESOURCE_MEM,
	},
	[1] = {
		.start = IRQ_TWI1,
		.end   = IRQ_TWI1,
		.flags = IORESOURCE_IRQ,
	},
};

static struct platform_device i2c_bfin_twi1_device = {
	.name = "i2c-bfin-twi",
	.id = 1,
	.num_resources = ARRAY_SIZE(bfin_twi1_resource),
	.resource = bfin_twi1_resource,
};
#endif
#endif

static struct resource bfin_gpios_resources = {
	.start = 0,
	.end   = MAX_BLACKFIN_GPIOS - 1,
	.flags = IORESOURCE_IRQ,
};

static struct platform_device bfin_gpios_device = {
	.name = "simple-gpio",
	.id = -1,
	.num_resources = 1,
	.resource = &bfin_gpios_resources,
};

#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
#include <linux/gpio_keys.h>

static struct gpio_keys_button bfin_gpio_keys_table[] = {
	{BTN_0, GPIO_PC7, 1, "gpio-keys: BTN0"},
};

static struct gpio_keys_platform_data bfin_gpio_keys_data = {
	.buttons        = bfin_gpio_keys_table,
	.nbuttons       = ARRAY_SIZE(bfin_gpio_keys_table),
};

static struct platform_device bfin_device_gpiokeys = {
	.name      = "gpio-keys",
	.dev = {
		.platform_data = &bfin_gpio_keys_data,
	},
};
#endif

static const unsigned int cclk_vlev_datasheet[] =
{
/*
 * Internal VLEV BF538SBBC1533
 ****temporarily using these values until data sheet is updated
 */
	VRPAIR(VLEV_100, 150000000),
	VRPAIR(VLEV_100, 250000000),
	VRPAIR(VLEV_110, 276000000),
	VRPAIR(VLEV_115, 301000000),
	VRPAIR(VLEV_120, 525000000),
	VRPAIR(VLEV_125, 550000000),
	VRPAIR(VLEV_130, 600000000),
};

static struct bfin_dpmc_platform_data bfin_dmpc_vreg_data = {
	.tuple_tab = cclk_vlev_datasheet,
	.tabsize = ARRAY_SIZE(cclk_vlev_datasheet),
	.vr_settling_time = 25 /* us */,
};

static struct platform_device bfin_dpmc = {
	.name = "bfin dpmc",
	.dev = {
		.platform_data = &bfin_dmpc_vreg_data,
	},
};

static struct platform_device *cm_bf538_devices[] __initdata = {

	&bfin_dpmc,

#if defined(CONFIG_RTC_DRV_BFIN) || defined(CONFIG_RTC_DRV_BFIN_MODULE)
	&rtc_device,
#endif

#if defined(CONFIG_SERIAL_BFIN) || defined(CONFIG_SERIAL_BFIN_MODULE)
	&bfin_uart_device,
#endif

#if defined(CONFIG_SPI_BFIN) || defined(CONFIG_SPI_BFIN_MODULE)
	&bf538_spi_master0,
	&bf538_spi_master1,
	&bf538_spi_master2,
#endif

#if defined(CONFIG_I2C_BLACKFIN_TWI) || defined(CONFIG_I2C_BLACKFIN_TWI_MODULE)
	&i2c_bfin_twi0_device,
	&i2c_bfin_twi1_device,
#endif

#if defined(CONFIG_BFIN_SIR) || defined(CONFIG_BFIN_SIR_MODULE)
	&bfin_sir_device,
#endif

#if defined(CONFIG_SMC91X) || defined(CONFIG_SMC91X_MODULE)
	&smc91x_device,
#endif

#if defined(CONFIG_FB_BFIN_LQ035Q1) || defined(CONFIG_FB_BFIN_LQ035Q1_MODULE)
	&bfin_lq035q1_device,
#endif

#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
	&bfin_device_gpiokeys,
#endif

	&bfin_gpios_device,
};

static int __init ezkit_init(void)
{
	printk(KERN_INFO "%s(): registering device resources\n", __func__);
	platform_add_devices(cm_bf538_devices, ARRAY_SIZE(cm_bf538_devices));

#if defined(CONFIG_SPI_BFIN) || defined(CONFIG_SPI_BFIN_MODULE)
	spi_register_board_info(bf538_spi_board_info,
			ARRAY_SIZE(bf538_spi_board_info));
#endif

	return 0;
}

arch_initcall(ezkit_init);