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Commit 1cb17e2d authored by Hartley Sweeten's avatar Hartley Sweeten Committed by Arnd Bergmann
Browse files

ep93xx: add support Vision EP9307 SoM 



Add support for Vision Engraving Systems EP9307 based SoM.

Signed-off-by: default avatarHartley Sweeten <hartleys@visionengravers.com>
Acked-by: default avatarRyan Mallon <ryan@bluewatersys.com>
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
parent 976d1676

arch/arm/mach-ep93xx/Kconfig

+7 −0
Original line number Diff line number Diff line
@@ -182,6 +182,13 @@ config MACH_TS72XX 
	  Say 'Y' here if you want your kernel to support the

	  Technologic Systems TS-72xx board.



config MACH_VISION_EP9307

	bool "Support Vision Engraving Systems EP9307 SoM"

	depends on EP93XX_SDCE0_PHYS_OFFSET

	help

	  Say 'Y' here if you want your kernel to support the

	  Vision Engraving Systems EP9307 SoM.



choice

	prompt "Select a UART for early kernel messages"

arch/arm/mach-ep93xx/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -15,3 +15,4 @@ obj-$(CONFIG_MACH_MICRO9) += micro9.o 
obj-$(CONFIG_MACH_SIM_ONE)	+= simone.o

obj-$(CONFIG_MACH_SNAPPER_CL15)	+= snappercl15.o

obj-$(CONFIG_MACH_TS72XX)	+= ts72xx.o

obj-$(CONFIG_MACH_VISION_EP9307)+= vision_ep9307.o

arch/arm/mach-ep93xx/vision_ep9307.c

0 → 100644
+364 −0
Original line number Diff line number Diff line 
/*

 * arch/arm/mach-ep93xx/vision_ep9307.c

 * Vision Engraving Systems EP9307 SoM support.

 *

 * Copyright (C) 2008-2011 Vision Engraving Systems

 * H Hartley Sweeten <hsweeten@visionengravers.com>

 *

 * 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.

 */



#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt



#include <linux/kernel.h>

#include <linux/init.h>

#include <linux/platform_device.h>

#include <linux/irq.h>

#include <linux/gpio.h>

#include <linux/fb.h>

#include <linux/io.h>

#include <linux/mtd/partitions.h>

#include <linux/i2c.h>

#include <linux/i2c-gpio.h>

#include <linux/i2c/pca953x.h>

#include <linux/spi/spi.h>

#include <linux/spi/flash.h>

#include <linux/spi/mmc_spi.h>

#include <linux/mmc/host.h>



#include <mach/hardware.h>

#include <mach/fb.h>

#include <mach/ep93xx_spi.h>



#include <asm/mach-types.h>

#include <asm/mach/map.h>

#include <asm/mach/arch.h>



/*************************************************************************

 * Static I/O mappings for the FPGA

 *************************************************************************/

#define VISION_PHYS_BASE	EP93XX_CS7_PHYS_BASE

#define VISION_VIRT_BASE	0xfebff000



static struct map_desc vision_io_desc[] __initdata = {

	{

		.virtual	= VISION_VIRT_BASE,

		.pfn		= __phys_to_pfn(VISION_PHYS_BASE),

		.length		= SZ_4K,

		.type		= MT_DEVICE,

	},

};



static void __init vision_map_io(void)

{

	ep93xx_map_io();



	iotable_init(vision_io_desc, ARRAY_SIZE(vision_io_desc));

}



/*************************************************************************

 * Ethernet

 *************************************************************************/

static struct ep93xx_eth_data vision_eth_data __initdata = {

	.phy_id		= 1,

};



/*************************************************************************

 * Framebuffer

 *************************************************************************/

#define VISION_LCD_ENABLE	EP93XX_GPIO_LINE_EGPIO1



static int vision_lcd_setup(struct platform_device *pdev)

{

	int err;



	err = gpio_request_one(VISION_LCD_ENABLE, GPIOF_INIT_HIGH,

				dev_name(&pdev->dev));

	if (err)

		return err;



	ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_RAS |

				 EP93XX_SYSCON_DEVCFG_RASONP3 |

				 EP93XX_SYSCON_DEVCFG_EXVC);



	return 0;

}



static void vision_lcd_teardown(struct platform_device *pdev)

{

	gpio_free(VISION_LCD_ENABLE);

}



static void vision_lcd_blank(int blank_mode, struct fb_info *info)

{

	if (blank_mode)

		gpio_set_value(VISION_LCD_ENABLE, 0);

	else

		gpio_set_value(VISION_LCD_ENABLE, 1);

}



static struct ep93xxfb_mach_info ep93xxfb_info __initdata = {

	.num_modes	= EP93XXFB_USE_MODEDB,

	.bpp		= 16,

	.flags		= EP93XXFB_USE_SDCSN0 | EP93XXFB_PCLK_FALLING,

	.setup		= vision_lcd_setup,

	.teardown	= vision_lcd_teardown,

	.blank		= vision_lcd_blank,

};





/*************************************************************************

 * GPIO Expanders

 *************************************************************************/

#define PCA9539_74_GPIO_BASE	(EP93XX_GPIO_LINE_MAX + 1)

#define PCA9539_75_GPIO_BASE	(PCA9539_74_GPIO_BASE + 16)

#define PCA9539_76_GPIO_BASE	(PCA9539_75_GPIO_BASE + 16)

#define PCA9539_77_GPIO_BASE	(PCA9539_76_GPIO_BASE + 16)



static struct pca953x_platform_data pca953x_74_gpio_data = {

	.gpio_base	= PCA9539_74_GPIO_BASE,

	.irq_base	= EP93XX_BOARD_IRQ(0),

};



static struct pca953x_platform_data pca953x_75_gpio_data = {

	.gpio_base	= PCA9539_75_GPIO_BASE,

	.irq_base	= -1,

};



static struct pca953x_platform_data pca953x_76_gpio_data = {

	.gpio_base	= PCA9539_76_GPIO_BASE,

	.irq_base	= -1,

};



static struct pca953x_platform_data pca953x_77_gpio_data = {

	.gpio_base	= PCA9539_77_GPIO_BASE,

	.irq_base	= -1,

};



/*************************************************************************

 * I2C Bus

 *************************************************************************/

static struct i2c_gpio_platform_data vision_i2c_gpio_data __initdata = {

	.sda_pin		= EP93XX_GPIO_LINE_EEDAT,

	.scl_pin		= EP93XX_GPIO_LINE_EECLK,

};



static struct i2c_board_info vision_i2c_info[] __initdata = {

	{

		I2C_BOARD_INFO("isl1208", 0x6f),

		.irq		= IRQ_EP93XX_EXT1,

	}, {

		I2C_BOARD_INFO("pca9539", 0x74),

		.platform_data	= &pca953x_74_gpio_data,

		.irq		= gpio_to_irq(EP93XX_GPIO_LINE_F(7)),

	}, {

		I2C_BOARD_INFO("pca9539", 0x75),

		.platform_data	= &pca953x_75_gpio_data,

	}, {

		I2C_BOARD_INFO("pca9539", 0x76),

		.platform_data	= &pca953x_76_gpio_data,

	}, {

		I2C_BOARD_INFO("pca9539", 0x77),

		.platform_data	= &pca953x_77_gpio_data,

	},

};



/*************************************************************************

 * SPI Flash

 *************************************************************************/

#define VISION_SPI_FLASH_CS	EP93XX_GPIO_LINE_EGPIO7



static struct mtd_partition vision_spi_flash_partitions[] = {

	{

		.name	= "SPI bootstrap",

		.offset	= 0,

		.size	= SZ_4K,

	}, {

		.name	= "Bootstrap config",

		.offset	= MTDPART_OFS_APPEND,

		.size	= SZ_4K,

	}, {

		.name	= "System config",

		.offset	= MTDPART_OFS_APPEND,

		.size	= MTDPART_SIZ_FULL,

	},

};



static struct flash_platform_data vision_spi_flash_data = {

	.name		= "SPI Flash",

	.parts		= vision_spi_flash_partitions,

	.nr_parts	= ARRAY_SIZE(vision_spi_flash_partitions),

};



static int vision_spi_flash_hw_setup(struct spi_device *spi)

{

	return gpio_request_one(VISION_SPI_FLASH_CS, GPIOF_INIT_HIGH,

				spi->modalias);

}



static void vision_spi_flash_hw_cleanup(struct spi_device *spi)

{

	gpio_free(VISION_SPI_FLASH_CS);

}



static void vision_spi_flash_hw_cs_control(struct spi_device *spi, int value)

{

	gpio_set_value(VISION_SPI_FLASH_CS, value);

}



static struct ep93xx_spi_chip_ops vision_spi_flash_hw = {

	.setup		= vision_spi_flash_hw_setup,

	.cleanup	= vision_spi_flash_hw_cleanup,

	.cs_control	= vision_spi_flash_hw_cs_control,

};



/*************************************************************************

 * SPI SD/MMC host

 *************************************************************************/

#define VISION_SPI_MMC_CS	EP93XX_GPIO_LINE_G(2)

#define VISION_SPI_MMC_WP	EP93XX_GPIO_LINE_F(0)

#define VISION_SPI_MMC_CD	EP93XX_GPIO_LINE_EGPIO15



static struct gpio vision_spi_mmc_gpios[] = {

	{ VISION_SPI_MMC_WP, GPIOF_DIR_IN, "mmc_spi:wp" },

	{ VISION_SPI_MMC_CD, GPIOF_DIR_IN, "mmc_spi:cd" },

};



static int vision_spi_mmc_init(struct device *pdev,

			irqreturn_t (*func)(int, void *), void *pdata)

{

	int err;



	err = gpio_request_array(vision_spi_mmc_gpios,

				 ARRAY_SIZE(vision_spi_mmc_gpios));

	if (err)

		return err;



	err = gpio_set_debounce(VISION_SPI_MMC_CD, 1);

	if (err)

		goto exit_err;



	err = request_irq(gpio_to_irq(VISION_SPI_MMC_CD), func,

			IRQ_TYPE_EDGE_BOTH, "mmc_spi:cd", pdata);

	if (err)

		goto exit_err;



	return 0;



exit_err:

	gpio_free_array(vision_spi_mmc_gpios, ARRAY_SIZE(vision_spi_mmc_gpios));

	return err;



}



static void vision_spi_mmc_exit(struct device *pdev, void *pdata)

{

	free_irq(gpio_to_irq(VISION_SPI_MMC_CD), pdata);

	gpio_free_array(vision_spi_mmc_gpios, ARRAY_SIZE(vision_spi_mmc_gpios));

}



static int vision_spi_mmc_get_ro(struct device *pdev)

{

	return !!gpio_get_value(VISION_SPI_MMC_WP);

}



static int vision_spi_mmc_get_cd(struct device *pdev)

{

	return !gpio_get_value(VISION_SPI_MMC_CD);

}



static struct mmc_spi_platform_data vision_spi_mmc_data = {

	.init		= vision_spi_mmc_init,

	.exit		= vision_spi_mmc_exit,

	.get_ro		= vision_spi_mmc_get_ro,

	.get_cd		= vision_spi_mmc_get_cd,

	.detect_delay	= 100,

	.powerup_msecs	= 100,

	.ocr_mask	= MMC_VDD_32_33 | MMC_VDD_33_34,

};



static int vision_spi_mmc_hw_setup(struct spi_device *spi)

{

	return gpio_request_one(VISION_SPI_MMC_CS, GPIOF_INIT_HIGH,

				spi->modalias);

}



static void vision_spi_mmc_hw_cleanup(struct spi_device *spi)

{

	gpio_free(VISION_SPI_MMC_CS);

}



static void vision_spi_mmc_hw_cs_control(struct spi_device *spi, int value)

{

	gpio_set_value(VISION_SPI_MMC_CS, value);

}



static struct ep93xx_spi_chip_ops vision_spi_mmc_hw = {

	.setup		= vision_spi_mmc_hw_setup,

	.cleanup	= vision_spi_mmc_hw_cleanup,

	.cs_control	= vision_spi_mmc_hw_cs_control,

};



/*************************************************************************

 * SPI Bus

 *************************************************************************/

static struct spi_board_info vision_spi_board_info[] __initdata = {

	{

		.modalias		= "sst25l",

		.platform_data		= &vision_spi_flash_data,

		.controller_data	= &vision_spi_flash_hw,

		.max_speed_hz		= 20000000,

		.bus_num		= 0,

		.chip_select		= 0,

		.mode			= SPI_MODE_3,

	}, {

		.modalias		= "mmc_spi",

		.platform_data		= &vision_spi_mmc_data,

		.controller_data	= &vision_spi_mmc_hw,

		.max_speed_hz		= 20000000,

		.bus_num		= 0,

		.chip_select		= 1,

		.mode			= SPI_MODE_3,

	},

};



static struct ep93xx_spi_info vision_spi_master __initdata = {

	.num_chipselect		= ARRAY_SIZE(vision_spi_board_info),

};



/*************************************************************************

 * Machine Initialization

 *************************************************************************/

static void __init vision_init_machine(void)

{

	ep93xx_init_devices();

	ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_64M);

	ep93xx_register_eth(&vision_eth_data, 1);

	ep93xx_register_fb(&ep93xxfb_info);

	ep93xx_register_pwm(1, 0);



	/*

	 * Request the gpio expander's interrupt gpio line now to prevent

	 * the kernel from doing a WARN in gpiolib:gpio_ensure_requested().

	 */

	if (gpio_request_one(EP93XX_GPIO_LINE_F(7), GPIOF_DIR_IN,

				"pca9539:74"))

		pr_warn("cannot request interrupt gpio for pca9539:74\n");



	ep93xx_register_i2c(&vision_i2c_gpio_data, vision_i2c_info,

				ARRAY_SIZE(vision_i2c_info));

	ep93xx_register_spi(&vision_spi_master, vision_spi_board_info,

				ARRAY_SIZE(vision_spi_board_info));

}



MACHINE_START(VISION_EP9307, "Vision Engraving Systems EP9307")

	/* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */

	.boot_params	= EP93XX_SDCE0_PHYS_BASE + 0x100,

	.map_io		= vision_map_io,

	.init_irq	= ep93xx_init_irq,

	.timer		= &ep93xx_timer,

	.init_machine	= vision_init_machine,

MACHINE_END