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55f0cd3fb9
This driver requires a GPIO line to be used for the chip select of each SPI device. Remove the ep93xx_spi_chip_ops definition from the platform data and use the spi core GPIO handling for the chip selects. Fix all the ep93xx platforms that use this driver and remove the old Documentation. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Mark Brown <broonie@kernel.org>
309 lines
8.7 KiB
C
309 lines
8.7 KiB
C
/*
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* arch/arm/mach-ep93xx/vision_ep9307.c
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* Vision Engraving Systems EP9307 SoM support.
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*
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* Copyright (C) 2008-2011 Vision Engraving Systems
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* H Hartley Sweeten <hsweeten@visionengravers.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/irq.h>
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#include <linux/gpio.h>
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#include <linux/fb.h>
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#include <linux/io.h>
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#include <linux/mtd/partitions.h>
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#include <linux/i2c.h>
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#include <linux/i2c-gpio.h>
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#include <linux/platform_data/pca953x.h>
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#include <linux/spi/spi.h>
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#include <linux/spi/flash.h>
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#include <linux/spi/mmc_spi.h>
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#include <linux/mmc/host.h>
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#include <sound/cs4271.h>
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#include <mach/hardware.h>
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#include <linux/platform_data/video-ep93xx.h>
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#include <linux/platform_data/spi-ep93xx.h>
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#include <mach/gpio-ep93xx.h>
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#include <asm/mach-types.h>
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#include <asm/mach/map.h>
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#include <asm/mach/arch.h>
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#include "soc.h"
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/*************************************************************************
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* Static I/O mappings for the FPGA
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*************************************************************************/
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#define VISION_PHYS_BASE EP93XX_CS7_PHYS_BASE
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#define VISION_VIRT_BASE 0xfebff000
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static struct map_desc vision_io_desc[] __initdata = {
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{
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.virtual = VISION_VIRT_BASE,
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.pfn = __phys_to_pfn(VISION_PHYS_BASE),
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.length = SZ_4K,
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.type = MT_DEVICE,
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},
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};
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static void __init vision_map_io(void)
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{
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ep93xx_map_io();
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iotable_init(vision_io_desc, ARRAY_SIZE(vision_io_desc));
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}
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/*************************************************************************
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* Ethernet
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*************************************************************************/
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static struct ep93xx_eth_data vision_eth_data __initdata = {
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.phy_id = 1,
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};
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/*************************************************************************
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* Framebuffer
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*************************************************************************/
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#define VISION_LCD_ENABLE EP93XX_GPIO_LINE_EGPIO1
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static int vision_lcd_setup(struct platform_device *pdev)
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{
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int err;
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err = gpio_request_one(VISION_LCD_ENABLE, GPIOF_INIT_HIGH,
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dev_name(&pdev->dev));
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if (err)
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return err;
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ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_RAS |
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EP93XX_SYSCON_DEVCFG_RASONP3 |
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EP93XX_SYSCON_DEVCFG_EXVC);
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return 0;
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}
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static void vision_lcd_teardown(struct platform_device *pdev)
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{
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gpio_free(VISION_LCD_ENABLE);
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}
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static void vision_lcd_blank(int blank_mode, struct fb_info *info)
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{
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if (blank_mode)
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gpio_set_value(VISION_LCD_ENABLE, 0);
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else
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gpio_set_value(VISION_LCD_ENABLE, 1);
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}
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static struct ep93xxfb_mach_info ep93xxfb_info __initdata = {
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.flags = EP93XXFB_USE_SDCSN0 | EP93XXFB_PCLK_FALLING,
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.setup = vision_lcd_setup,
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.teardown = vision_lcd_teardown,
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.blank = vision_lcd_blank,
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};
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/*************************************************************************
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* GPIO Expanders
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*************************************************************************/
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#define PCA9539_74_GPIO_BASE (EP93XX_GPIO_LINE_MAX + 1)
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#define PCA9539_75_GPIO_BASE (PCA9539_74_GPIO_BASE + 16)
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#define PCA9539_76_GPIO_BASE (PCA9539_75_GPIO_BASE + 16)
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#define PCA9539_77_GPIO_BASE (PCA9539_76_GPIO_BASE + 16)
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static struct pca953x_platform_data pca953x_74_gpio_data = {
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.gpio_base = PCA9539_74_GPIO_BASE,
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.irq_base = EP93XX_BOARD_IRQ(0),
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};
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static struct pca953x_platform_data pca953x_75_gpio_data = {
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.gpio_base = PCA9539_75_GPIO_BASE,
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.irq_base = -1,
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};
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static struct pca953x_platform_data pca953x_76_gpio_data = {
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.gpio_base = PCA9539_76_GPIO_BASE,
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.irq_base = -1,
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};
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static struct pca953x_platform_data pca953x_77_gpio_data = {
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.gpio_base = PCA9539_77_GPIO_BASE,
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.irq_base = -1,
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};
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/*************************************************************************
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* I2C Bus
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*************************************************************************/
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static struct i2c_gpio_platform_data vision_i2c_gpio_data __initdata = {
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.sda_pin = EP93XX_GPIO_LINE_EEDAT,
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.scl_pin = EP93XX_GPIO_LINE_EECLK,
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};
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static struct i2c_board_info vision_i2c_info[] __initdata = {
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{
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I2C_BOARD_INFO("isl1208", 0x6f),
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.irq = IRQ_EP93XX_EXT1,
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}, {
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I2C_BOARD_INFO("pca9539", 0x74),
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.platform_data = &pca953x_74_gpio_data,
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}, {
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I2C_BOARD_INFO("pca9539", 0x75),
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.platform_data = &pca953x_75_gpio_data,
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}, {
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I2C_BOARD_INFO("pca9539", 0x76),
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.platform_data = &pca953x_76_gpio_data,
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}, {
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I2C_BOARD_INFO("pca9539", 0x77),
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.platform_data = &pca953x_77_gpio_data,
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},
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};
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/*************************************************************************
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* SPI CS4271 Audio Codec
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*************************************************************************/
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static struct cs4271_platform_data vision_cs4271_data = {
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.gpio_nreset = EP93XX_GPIO_LINE_H(2),
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};
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/*************************************************************************
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* SPI Flash
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*************************************************************************/
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static struct mtd_partition vision_spi_flash_partitions[] = {
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{
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.name = "SPI bootstrap",
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.offset = 0,
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.size = SZ_4K,
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}, {
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.name = "Bootstrap config",
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.offset = MTDPART_OFS_APPEND,
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.size = SZ_4K,
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}, {
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.name = "System config",
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.offset = MTDPART_OFS_APPEND,
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.size = MTDPART_SIZ_FULL,
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},
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};
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static struct flash_platform_data vision_spi_flash_data = {
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.name = "SPI Flash",
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.parts = vision_spi_flash_partitions,
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.nr_parts = ARRAY_SIZE(vision_spi_flash_partitions),
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};
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/*************************************************************************
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* SPI SD/MMC host
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*************************************************************************/
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static struct mmc_spi_platform_data vision_spi_mmc_data = {
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.detect_delay = 100,
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.powerup_msecs = 100,
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.ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34,
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.flags = MMC_SPI_USE_CD_GPIO | MMC_SPI_USE_RO_GPIO,
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.cd_gpio = EP93XX_GPIO_LINE_EGPIO15,
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.cd_debounce = 1,
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.ro_gpio = EP93XX_GPIO_LINE_F(0),
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.caps2 = MMC_CAP2_RO_ACTIVE_HIGH,
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};
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/*************************************************************************
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* SPI Bus
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*************************************************************************/
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static struct spi_board_info vision_spi_board_info[] __initdata = {
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{
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.modalias = "cs4271",
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.platform_data = &vision_cs4271_data,
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.max_speed_hz = 6000000,
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.bus_num = 0,
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.chip_select = 0,
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.mode = SPI_MODE_3,
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}, {
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.modalias = "sst25l",
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.platform_data = &vision_spi_flash_data,
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.max_speed_hz = 20000000,
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.bus_num = 0,
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.chip_select = 1,
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.mode = SPI_MODE_3,
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}, {
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.modalias = "mmc_spi",
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.platform_data = &vision_spi_mmc_data,
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.max_speed_hz = 20000000,
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.bus_num = 0,
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.chip_select = 2,
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.mode = SPI_MODE_3,
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},
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};
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static int vision_spi_chipselects[] __initdata = {
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EP93XX_GPIO_LINE_EGPIO6,
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EP93XX_GPIO_LINE_EGPIO7,
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EP93XX_GPIO_LINE_G(2),
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};
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static struct ep93xx_spi_info vision_spi_master __initdata = {
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.chipselect = vision_spi_chipselects,
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.num_chipselect = ARRAY_SIZE(vision_spi_chipselects),
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.use_dma = 1,
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};
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/*************************************************************************
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* I2S Audio
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*************************************************************************/
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static struct platform_device vision_audio_device = {
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.name = "edb93xx-audio",
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.id = -1,
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};
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static void __init vision_register_i2s(void)
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{
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ep93xx_register_i2s();
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platform_device_register(&vision_audio_device);
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}
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/*************************************************************************
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* Machine Initialization
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*************************************************************************/
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static void __init vision_init_machine(void)
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{
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ep93xx_init_devices();
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ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_64M);
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ep93xx_register_eth(&vision_eth_data, 1);
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ep93xx_register_fb(&ep93xxfb_info);
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ep93xx_register_pwm(1, 0);
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/*
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* Request the gpio expander's interrupt gpio line now to prevent
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* the kernel from doing a WARN in gpiolib:gpio_ensure_requested().
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*/
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if (gpio_request_one(EP93XX_GPIO_LINE_F(7), GPIOF_DIR_IN,
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"pca9539:74"))
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pr_warn("cannot request interrupt gpio for pca9539:74\n");
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vision_i2c_info[1].irq = gpio_to_irq(EP93XX_GPIO_LINE_F(7));
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ep93xx_register_i2c(&vision_i2c_gpio_data, vision_i2c_info,
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ARRAY_SIZE(vision_i2c_info));
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ep93xx_register_spi(&vision_spi_master, vision_spi_board_info,
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ARRAY_SIZE(vision_spi_board_info));
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vision_register_i2s();
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}
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MACHINE_START(VISION_EP9307, "Vision Engraving Systems EP9307")
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/* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
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.atag_offset = 0x100,
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.map_io = vision_map_io,
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.init_irq = ep93xx_init_irq,
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.init_time = ep93xx_timer_init,
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.init_machine = vision_init_machine,
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.init_late = ep93xx_init_late,
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.restart = ep93xx_restart,
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MACHINE_END
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