372 lines
10 KiB
C
372 lines
10 KiB
C
/*
|
|
* 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 <mach/gpio-ep93xx.h>
|
|
|
|
#include <asm/hardware/vic.h>
|
|
#include <asm/mach-types.h>
|
|
#include <asm/mach/map.h>
|
|
#include <asm/mach/arch.h>
|
|
|
|
#include "soc.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,
|
|
}, {
|
|
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");
|
|
|
|
vision_i2c_info[1].irq = gpio_to_irq(EP93XX_GPIO_LINE_F(7));
|
|
|
|
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> */
|
|
.atag_offset = 0x100,
|
|
.map_io = vision_map_io,
|
|
.init_irq = ep93xx_init_irq,
|
|
.handle_irq = vic_handle_irq,
|
|
.timer = &ep93xx_timer,
|
|
.init_machine = vision_init_machine,
|
|
.restart = ep93xx_restart,
|
|
MACHINE_END
|