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310 lines
8.6 KiB
310 lines
8.6 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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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 <[email protected]> |
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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/gpio/machine.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/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 "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 "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_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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.caps2 = MMC_CAP2_RO_ACTIVE_HIGH, |
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}; |
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static struct gpiod_lookup_table vision_spi_mmc_gpio_table = { |
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.dev_id = "mmc_spi.2", /* "mmc_spi @ CS2 */ |
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.table = { |
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/* Card detect */ |
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GPIO_LOOKUP_IDX("B", 7, NULL, 0, GPIO_ACTIVE_LOW), |
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/* Write protect */ |
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GPIO_LOOKUP_IDX("F", 0, NULL, 1, GPIO_ACTIVE_HIGH), |
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{ }, |
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}, |
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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 struct gpiod_lookup_table vision_spi_cs_gpio_table = { |
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.dev_id = "spi0", |
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.table = { |
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GPIO_LOOKUP_IDX("A", 6, "cs", 0, GPIO_ACTIVE_LOW), |
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GPIO_LOOKUP_IDX("A", 7, "cs", 1, GPIO_ACTIVE_LOW), |
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GPIO_LOOKUP_IDX("G", 2, "cs", 2, GPIO_ACTIVE_LOW), |
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{ }, |
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}, |
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}; |
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static struct ep93xx_spi_info vision_spi_master __initdata = { |
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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_info, |
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ARRAY_SIZE(vision_i2c_info)); |
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gpiod_add_lookup_table(&vision_spi_mmc_gpio_table); |
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gpiod_add_lookup_table(&vision_spi_cs_gpio_table); |
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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 <[email protected]> */ |
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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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.restart = ep93xx_restart, |
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MACHINE_END
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