2 * arch/arm/mach-ep93xx/vision_ep9307.c
3 * Vision Engraving Systems EP9307 SoM support.
5 * Copyright (C) 2008-2011 Vision Engraving Systems
6 * H Hartley Sweeten <hsweeten@visionengravers.com>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or (at
11 * your option) any later version.
14 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
16 #include <linux/kernel.h>
17 #include <linux/init.h>
18 #include <linux/platform_device.h>
19 #include <linux/irq.h>
20 #include <linux/gpio.h>
23 #include <linux/mtd/partitions.h>
24 #include <linux/i2c.h>
25 #include <linux/i2c-gpio.h>
26 #include <linux/i2c/pca953x.h>
27 #include <linux/spi/spi.h>
28 #include <linux/spi/flash.h>
29 #include <linux/spi/mmc_spi.h>
30 #include <linux/mmc/host.h>
32 #include <mach/hardware.h>
34 #include <mach/ep93xx_spi.h>
36 #include <asm/mach-types.h>
37 #include <asm/mach/map.h>
38 #include <asm/mach/arch.h>
40 /*************************************************************************
41 * Static I/O mappings for the FPGA
42 *************************************************************************/
43 #define VISION_PHYS_BASE EP93XX_CS7_PHYS_BASE
44 #define VISION_VIRT_BASE 0xfebff000
46 static struct map_desc vision_io_desc[] __initdata = {
48 .virtual = VISION_VIRT_BASE,
49 .pfn = __phys_to_pfn(VISION_PHYS_BASE),
55 static void __init vision_map_io(void)
59 iotable_init(vision_io_desc, ARRAY_SIZE(vision_io_desc));
62 /*************************************************************************
64 *************************************************************************/
65 static struct ep93xx_eth_data vision_eth_data __initdata = {
69 /*************************************************************************
71 *************************************************************************/
72 #define VISION_LCD_ENABLE EP93XX_GPIO_LINE_EGPIO1
74 static int vision_lcd_setup(struct platform_device *pdev)
78 err = gpio_request_one(VISION_LCD_ENABLE, GPIOF_INIT_HIGH,
79 dev_name(&pdev->dev));
83 ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_RAS |
84 EP93XX_SYSCON_DEVCFG_RASONP3 |
85 EP93XX_SYSCON_DEVCFG_EXVC);
90 static void vision_lcd_teardown(struct platform_device *pdev)
92 gpio_free(VISION_LCD_ENABLE);
95 static void vision_lcd_blank(int blank_mode, struct fb_info *info)
98 gpio_set_value(VISION_LCD_ENABLE, 0);
100 gpio_set_value(VISION_LCD_ENABLE, 1);
103 static struct ep93xxfb_mach_info ep93xxfb_info __initdata = {
104 .num_modes = EP93XXFB_USE_MODEDB,
106 .flags = EP93XXFB_USE_SDCSN0 | EP93XXFB_PCLK_FALLING,
107 .setup = vision_lcd_setup,
108 .teardown = vision_lcd_teardown,
109 .blank = vision_lcd_blank,
113 /*************************************************************************
115 *************************************************************************/
116 #define PCA9539_74_GPIO_BASE (EP93XX_GPIO_LINE_MAX + 1)
117 #define PCA9539_75_GPIO_BASE (PCA9539_74_GPIO_BASE + 16)
118 #define PCA9539_76_GPIO_BASE (PCA9539_75_GPIO_BASE + 16)
119 #define PCA9539_77_GPIO_BASE (PCA9539_76_GPIO_BASE + 16)
121 static struct pca953x_platform_data pca953x_74_gpio_data = {
122 .gpio_base = PCA9539_74_GPIO_BASE,
123 .irq_base = EP93XX_BOARD_IRQ(0),
126 static struct pca953x_platform_data pca953x_75_gpio_data = {
127 .gpio_base = PCA9539_75_GPIO_BASE,
131 static struct pca953x_platform_data pca953x_76_gpio_data = {
132 .gpio_base = PCA9539_76_GPIO_BASE,
136 static struct pca953x_platform_data pca953x_77_gpio_data = {
137 .gpio_base = PCA9539_77_GPIO_BASE,
141 /*************************************************************************
143 *************************************************************************/
144 static struct i2c_gpio_platform_data vision_i2c_gpio_data __initdata = {
145 .sda_pin = EP93XX_GPIO_LINE_EEDAT,
146 .scl_pin = EP93XX_GPIO_LINE_EECLK,
149 static struct i2c_board_info vision_i2c_info[] __initdata = {
151 I2C_BOARD_INFO("isl1208", 0x6f),
152 .irq = IRQ_EP93XX_EXT1,
154 I2C_BOARD_INFO("pca9539", 0x74),
155 .platform_data = &pca953x_74_gpio_data,
156 .irq = gpio_to_irq(EP93XX_GPIO_LINE_F(7)),
158 I2C_BOARD_INFO("pca9539", 0x75),
159 .platform_data = &pca953x_75_gpio_data,
161 I2C_BOARD_INFO("pca9539", 0x76),
162 .platform_data = &pca953x_76_gpio_data,
164 I2C_BOARD_INFO("pca9539", 0x77),
165 .platform_data = &pca953x_77_gpio_data,
169 /*************************************************************************
171 *************************************************************************/
172 #define VISION_SPI_FLASH_CS EP93XX_GPIO_LINE_EGPIO7
174 static struct mtd_partition vision_spi_flash_partitions[] = {
176 .name = "SPI bootstrap",
180 .name = "Bootstrap config",
181 .offset = MTDPART_OFS_APPEND,
184 .name = "System config",
185 .offset = MTDPART_OFS_APPEND,
186 .size = MTDPART_SIZ_FULL,
190 static struct flash_platform_data vision_spi_flash_data = {
192 .parts = vision_spi_flash_partitions,
193 .nr_parts = ARRAY_SIZE(vision_spi_flash_partitions),
196 static int vision_spi_flash_hw_setup(struct spi_device *spi)
198 return gpio_request_one(VISION_SPI_FLASH_CS, GPIOF_INIT_HIGH,
202 static void vision_spi_flash_hw_cleanup(struct spi_device *spi)
204 gpio_free(VISION_SPI_FLASH_CS);
207 static void vision_spi_flash_hw_cs_control(struct spi_device *spi, int value)
209 gpio_set_value(VISION_SPI_FLASH_CS, value);
212 static struct ep93xx_spi_chip_ops vision_spi_flash_hw = {
213 .setup = vision_spi_flash_hw_setup,
214 .cleanup = vision_spi_flash_hw_cleanup,
215 .cs_control = vision_spi_flash_hw_cs_control,
218 /*************************************************************************
220 *************************************************************************/
221 #define VISION_SPI_MMC_CS EP93XX_GPIO_LINE_G(2)
222 #define VISION_SPI_MMC_WP EP93XX_GPIO_LINE_F(0)
223 #define VISION_SPI_MMC_CD EP93XX_GPIO_LINE_EGPIO15
225 static struct gpio vision_spi_mmc_gpios[] = {
226 { VISION_SPI_MMC_WP, GPIOF_DIR_IN, "mmc_spi:wp" },
227 { VISION_SPI_MMC_CD, GPIOF_DIR_IN, "mmc_spi:cd" },
230 static int vision_spi_mmc_init(struct device *pdev,
231 irqreturn_t (*func)(int, void *), void *pdata)
235 err = gpio_request_array(vision_spi_mmc_gpios,
236 ARRAY_SIZE(vision_spi_mmc_gpios));
240 err = gpio_set_debounce(VISION_SPI_MMC_CD, 1);
244 err = request_irq(gpio_to_irq(VISION_SPI_MMC_CD), func,
245 IRQ_TYPE_EDGE_BOTH, "mmc_spi:cd", pdata);
252 gpio_free_array(vision_spi_mmc_gpios, ARRAY_SIZE(vision_spi_mmc_gpios));
257 static void vision_spi_mmc_exit(struct device *pdev, void *pdata)
259 free_irq(gpio_to_irq(VISION_SPI_MMC_CD), pdata);
260 gpio_free_array(vision_spi_mmc_gpios, ARRAY_SIZE(vision_spi_mmc_gpios));
263 static int vision_spi_mmc_get_ro(struct device *pdev)
265 return !!gpio_get_value(VISION_SPI_MMC_WP);
268 static int vision_spi_mmc_get_cd(struct device *pdev)
270 return !gpio_get_value(VISION_SPI_MMC_CD);
273 static struct mmc_spi_platform_data vision_spi_mmc_data = {
274 .init = vision_spi_mmc_init,
275 .exit = vision_spi_mmc_exit,
276 .get_ro = vision_spi_mmc_get_ro,
277 .get_cd = vision_spi_mmc_get_cd,
279 .powerup_msecs = 100,
280 .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34,
283 static int vision_spi_mmc_hw_setup(struct spi_device *spi)
285 return gpio_request_one(VISION_SPI_MMC_CS, GPIOF_INIT_HIGH,
289 static void vision_spi_mmc_hw_cleanup(struct spi_device *spi)
291 gpio_free(VISION_SPI_MMC_CS);
294 static void vision_spi_mmc_hw_cs_control(struct spi_device *spi, int value)
296 gpio_set_value(VISION_SPI_MMC_CS, value);
299 static struct ep93xx_spi_chip_ops vision_spi_mmc_hw = {
300 .setup = vision_spi_mmc_hw_setup,
301 .cleanup = vision_spi_mmc_hw_cleanup,
302 .cs_control = vision_spi_mmc_hw_cs_control,
305 /*************************************************************************
307 *************************************************************************/
308 static struct spi_board_info vision_spi_board_info[] __initdata = {
310 .modalias = "sst25l",
311 .platform_data = &vision_spi_flash_data,
312 .controller_data = &vision_spi_flash_hw,
313 .max_speed_hz = 20000000,
318 .modalias = "mmc_spi",
319 .platform_data = &vision_spi_mmc_data,
320 .controller_data = &vision_spi_mmc_hw,
321 .max_speed_hz = 20000000,
328 static struct ep93xx_spi_info vision_spi_master __initdata = {
329 .num_chipselect = ARRAY_SIZE(vision_spi_board_info),
332 /*************************************************************************
333 * Machine Initialization
334 *************************************************************************/
335 static void __init vision_init_machine(void)
337 ep93xx_init_devices();
338 ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_64M);
339 ep93xx_register_eth(&vision_eth_data, 1);
340 ep93xx_register_fb(&ep93xxfb_info);
341 ep93xx_register_pwm(1, 0);
344 * Request the gpio expander's interrupt gpio line now to prevent
345 * the kernel from doing a WARN in gpiolib:gpio_ensure_requested().
347 if (gpio_request_one(EP93XX_GPIO_LINE_F(7), GPIOF_DIR_IN,
349 pr_warn("cannot request interrupt gpio for pca9539:74\n");
351 ep93xx_register_i2c(&vision_i2c_gpio_data, vision_i2c_info,
352 ARRAY_SIZE(vision_i2c_info));
353 ep93xx_register_spi(&vision_spi_master, vision_spi_board_info,
354 ARRAY_SIZE(vision_spi_board_info));
357 MACHINE_START(VISION_EP9307, "Vision Engraving Systems EP9307")
358 /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
359 .atag_offset = 0x100,
360 .map_io = vision_map_io,
361 .init_irq = ep93xx_init_irq,
362 .timer = &ep93xx_timer,
363 .init_machine = vision_init_machine,