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

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* 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>
*/
#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/gpio/machine.h>
#include <linux/fb.h>
#include <linux/io.h>
#include <linux/mtd/partitions.h>
#include <linux/i2c.h>
#include <linux/platform_data/pca953x.h>
#include <linux/spi/spi.h>
#include <linux/spi/flash.h>
#include <linux/spi/mmc_spi.h>
#include <linux/mmc/host.h>
#include <sound/cs4271.h>
#include "hardware.h"
#include <linux/platform_data/video-ep93xx.h>
#include <linux/platform_data/spi-ep93xx.h>
#include "gpio-ep93xx.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 = {
.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_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 CS4271 Audio Codec
*************************************************************************/
static struct cs4271_platform_data vision_cs4271_data = {
.gpio_nreset = EP93XX_GPIO_LINE_H(2),
};
/*************************************************************************
* SPI Flash
*************************************************************************/
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),
};
/*************************************************************************
* SPI SD/MMC host
*************************************************************************/
static struct mmc_spi_platform_data vision_spi_mmc_data = {
.detect_delay = 100,
.powerup_msecs = 100,
.ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34,
.caps2 = MMC_CAP2_RO_ACTIVE_HIGH,
};
static struct gpiod_lookup_table vision_spi_mmc_gpio_table = {
.dev_id = "mmc_spi.2", /* "mmc_spi @ CS2 */
.table = {
/* Card detect */
GPIO_LOOKUP_IDX("B", 7, NULL, 0, GPIO_ACTIVE_LOW),
/* Write protect */
GPIO_LOOKUP_IDX("F", 0, NULL, 1, GPIO_ACTIVE_HIGH),
{ },
},
};
/*************************************************************************
* SPI Bus
*************************************************************************/
static struct spi_board_info vision_spi_board_info[] __initdata = {
{
.modalias = "cs4271",
.platform_data = &vision_cs4271_data,
.max_speed_hz = 6000000,
.bus_num = 0,
.chip_select = 0,
.mode = SPI_MODE_3,
}, {
.modalias = "sst25l",
.platform_data = &vision_spi_flash_data,
.max_speed_hz = 20000000,
.bus_num = 0,
.chip_select = 1,
.mode = SPI_MODE_3,
}, {
.modalias = "mmc_spi",
.platform_data = &vision_spi_mmc_data,
.max_speed_hz = 20000000,
.bus_num = 0,
.chip_select = 2,
.mode = SPI_MODE_3,
},
};
static struct gpiod_lookup_table vision_spi_cs_gpio_table = {
.dev_id = "spi0",
.table = {
GPIO_LOOKUP_IDX("A", 6, "cs", 0, GPIO_ACTIVE_LOW),
GPIO_LOOKUP_IDX("A", 7, "cs", 1, GPIO_ACTIVE_LOW),
GPIO_LOOKUP_IDX("G", 2, "cs", 2, GPIO_ACTIVE_LOW),
{ },
},
};
static struct ep93xx_spi_info vision_spi_master __initdata = {
.use_dma = 1,
};
/*************************************************************************
* I2S Audio
*************************************************************************/
static struct platform_device vision_audio_device = {
.name = "edb93xx-audio",
.id = -1,
};
static void __init vision_register_i2s(void)
{
ep93xx_register_i2s();
platform_device_register(&vision_audio_device);
}
/*************************************************************************
* 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_info,
ARRAY_SIZE(vision_i2c_info));
gpiod_add_lookup_table(&vision_spi_mmc_gpio_table);
gpiod_add_lookup_table(&vision_spi_cs_gpio_table);
ep93xx_register_spi(&vision_spi_master, vision_spi_board_info,
ARRAY_SIZE(vision_spi_board_info));
vision_register_i2s();
}
MACHINE_START(VISION_EP9307, "Vision Engraving Systems EP9307")
/* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
.atag_offset = 0x100,
.nr_irqs = NR_EP93XX_IRQS + EP93XX_BOARD_IRQS,
.map_io = vision_map_io,
.init_irq = ep93xx_init_irq,
.init_time = ep93xx_timer_init,
.init_machine = vision_init_machine,
.restart = ep93xx_restart,
MACHINE_END
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