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-rw-r--r--arch/arm/mach-ep93xx/vision_ep9307.c311
1 files changed, 311 insertions, 0 deletions
diff --git a/arch/arm/mach-ep93xx/vision_ep9307.c b/arch/arm/mach-ep93xx/vision_ep9307.c
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--- /dev/null
+++ b/arch/arm/mach-ep93xx/vision_ep9307.c
@@ -0,0 +1,311 @@
+// 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