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/platform_data/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 <sound/cs4271.h>
34 #include <mach/hardware.h>
35 #include <linux/platform_data/video-ep93xx.h>
36 #include <linux/platform_data/spi-ep93xx.h>
37 #include <mach/gpio-ep93xx.h>
39 #include <asm/mach-types.h>
40 #include <asm/mach/map.h>
41 #include <asm/mach/arch.h>
45 /*************************************************************************
46 * Static I/O mappings for the FPGA
47 *************************************************************************/
48 #define VISION_PHYS_BASE EP93XX_CS7_PHYS_BASE
49 #define VISION_VIRT_BASE 0xfebff000
51 static struct map_desc vision_io_desc[] __initdata = {
53 .virtual = VISION_VIRT_BASE,
54 .pfn = __phys_to_pfn(VISION_PHYS_BASE),
60 static void __init vision_map_io(void)
64 iotable_init(vision_io_desc, ARRAY_SIZE(vision_io_desc));
67 /*************************************************************************
69 *************************************************************************/
70 static struct ep93xx_eth_data vision_eth_data __initdata = {
74 /*************************************************************************
76 *************************************************************************/
77 #define VISION_LCD_ENABLE EP93XX_GPIO_LINE_EGPIO1
79 static int vision_lcd_setup(struct platform_device *pdev)
83 err = gpio_request_one(VISION_LCD_ENABLE, GPIOF_INIT_HIGH,
84 dev_name(&pdev->dev));
88 ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_RAS |
89 EP93XX_SYSCON_DEVCFG_RASONP3 |
90 EP93XX_SYSCON_DEVCFG_EXVC);
95 static void vision_lcd_teardown(struct platform_device *pdev)
97 gpio_free(VISION_LCD_ENABLE);
100 static void vision_lcd_blank(int blank_mode, struct fb_info *info)
103 gpio_set_value(VISION_LCD_ENABLE, 0);
105 gpio_set_value(VISION_LCD_ENABLE, 1);
108 static struct ep93xxfb_mach_info ep93xxfb_info __initdata = {
109 .flags = EP93XXFB_USE_SDCSN0 | EP93XXFB_PCLK_FALLING,
110 .setup = vision_lcd_setup,
111 .teardown = vision_lcd_teardown,
112 .blank = vision_lcd_blank,
116 /*************************************************************************
118 *************************************************************************/
119 #define PCA9539_74_GPIO_BASE (EP93XX_GPIO_LINE_MAX + 1)
120 #define PCA9539_75_GPIO_BASE (PCA9539_74_GPIO_BASE + 16)
121 #define PCA9539_76_GPIO_BASE (PCA9539_75_GPIO_BASE + 16)
122 #define PCA9539_77_GPIO_BASE (PCA9539_76_GPIO_BASE + 16)
124 static struct pca953x_platform_data pca953x_74_gpio_data = {
125 .gpio_base = PCA9539_74_GPIO_BASE,
126 .irq_base = EP93XX_BOARD_IRQ(0),
129 static struct pca953x_platform_data pca953x_75_gpio_data = {
130 .gpio_base = PCA9539_75_GPIO_BASE,
134 static struct pca953x_platform_data pca953x_76_gpio_data = {
135 .gpio_base = PCA9539_76_GPIO_BASE,
139 static struct pca953x_platform_data pca953x_77_gpio_data = {
140 .gpio_base = PCA9539_77_GPIO_BASE,
144 /*************************************************************************
146 *************************************************************************/
147 static struct i2c_gpio_platform_data vision_i2c_gpio_data __initdata = {
148 .sda_pin = EP93XX_GPIO_LINE_EEDAT,
149 .scl_pin = EP93XX_GPIO_LINE_EECLK,
152 static struct i2c_board_info vision_i2c_info[] __initdata = {
154 I2C_BOARD_INFO("isl1208", 0x6f),
155 .irq = IRQ_EP93XX_EXT1,
157 I2C_BOARD_INFO("pca9539", 0x74),
158 .platform_data = &pca953x_74_gpio_data,
160 I2C_BOARD_INFO("pca9539", 0x75),
161 .platform_data = &pca953x_75_gpio_data,
163 I2C_BOARD_INFO("pca9539", 0x76),
164 .platform_data = &pca953x_76_gpio_data,
166 I2C_BOARD_INFO("pca9539", 0x77),
167 .platform_data = &pca953x_77_gpio_data,
171 /*************************************************************************
172 * SPI CS4271 Audio Codec
173 *************************************************************************/
174 static struct cs4271_platform_data vision_cs4271_data = {
175 .gpio_nreset = EP93XX_GPIO_LINE_H(2),
178 static int vision_cs4271_hw_setup(struct spi_device *spi)
180 return gpio_request_one(EP93XX_GPIO_LINE_EGPIO6,
181 GPIOF_OUT_INIT_HIGH, spi->modalias);
184 static void vision_cs4271_hw_cleanup(struct spi_device *spi)
186 gpio_free(EP93XX_GPIO_LINE_EGPIO6);
189 static void vision_cs4271_hw_cs_control(struct spi_device *spi, int value)
191 gpio_set_value(EP93XX_GPIO_LINE_EGPIO6, value);
194 static struct ep93xx_spi_chip_ops vision_cs4271_hw = {
195 .setup = vision_cs4271_hw_setup,
196 .cleanup = vision_cs4271_hw_cleanup,
197 .cs_control = vision_cs4271_hw_cs_control,
200 /*************************************************************************
202 *************************************************************************/
203 #define VISION_SPI_FLASH_CS EP93XX_GPIO_LINE_EGPIO7
205 static struct mtd_partition vision_spi_flash_partitions[] = {
207 .name = "SPI bootstrap",
211 .name = "Bootstrap config",
212 .offset = MTDPART_OFS_APPEND,
215 .name = "System config",
216 .offset = MTDPART_OFS_APPEND,
217 .size = MTDPART_SIZ_FULL,
221 static struct flash_platform_data vision_spi_flash_data = {
223 .parts = vision_spi_flash_partitions,
224 .nr_parts = ARRAY_SIZE(vision_spi_flash_partitions),
227 static int vision_spi_flash_hw_setup(struct spi_device *spi)
229 return gpio_request_one(VISION_SPI_FLASH_CS, GPIOF_INIT_HIGH,
233 static void vision_spi_flash_hw_cleanup(struct spi_device *spi)
235 gpio_free(VISION_SPI_FLASH_CS);
238 static void vision_spi_flash_hw_cs_control(struct spi_device *spi, int value)
240 gpio_set_value(VISION_SPI_FLASH_CS, value);
243 static struct ep93xx_spi_chip_ops vision_spi_flash_hw = {
244 .setup = vision_spi_flash_hw_setup,
245 .cleanup = vision_spi_flash_hw_cleanup,
246 .cs_control = vision_spi_flash_hw_cs_control,
249 /*************************************************************************
251 *************************************************************************/
252 #define VISION_SPI_MMC_CS EP93XX_GPIO_LINE_G(2)
253 #define VISION_SPI_MMC_WP EP93XX_GPIO_LINE_F(0)
254 #define VISION_SPI_MMC_CD EP93XX_GPIO_LINE_EGPIO15
256 static struct mmc_spi_platform_data vision_spi_mmc_data = {
258 .powerup_msecs = 100,
259 .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34,
260 .flags = MMC_SPI_USE_CD_GPIO | MMC_SPI_USE_RO_GPIO,
261 .cd_gpio = VISION_SPI_MMC_CD,
263 .ro_gpio = VISION_SPI_MMC_WP,
264 .caps2 = MMC_CAP2_RO_ACTIVE_HIGH,
267 static int vision_spi_mmc_hw_setup(struct spi_device *spi)
269 return gpio_request_one(VISION_SPI_MMC_CS, GPIOF_INIT_HIGH,
273 static void vision_spi_mmc_hw_cleanup(struct spi_device *spi)
275 gpio_free(VISION_SPI_MMC_CS);
278 static void vision_spi_mmc_hw_cs_control(struct spi_device *spi, int value)
280 gpio_set_value(VISION_SPI_MMC_CS, value);
283 static struct ep93xx_spi_chip_ops vision_spi_mmc_hw = {
284 .setup = vision_spi_mmc_hw_setup,
285 .cleanup = vision_spi_mmc_hw_cleanup,
286 .cs_control = vision_spi_mmc_hw_cs_control,
289 /*************************************************************************
291 *************************************************************************/
292 static struct spi_board_info vision_spi_board_info[] __initdata = {
294 .modalias = "cs4271",
295 .platform_data = &vision_cs4271_data,
296 .controller_data = &vision_cs4271_hw,
297 .max_speed_hz = 6000000,
302 .modalias = "sst25l",
303 .platform_data = &vision_spi_flash_data,
304 .controller_data = &vision_spi_flash_hw,
305 .max_speed_hz = 20000000,
310 .modalias = "mmc_spi",
311 .platform_data = &vision_spi_mmc_data,
312 .controller_data = &vision_spi_mmc_hw,
313 .max_speed_hz = 20000000,
320 static struct ep93xx_spi_info vision_spi_master __initdata = {
321 .num_chipselect = ARRAY_SIZE(vision_spi_board_info),
325 /*************************************************************************
327 *************************************************************************/
328 static struct platform_device vision_audio_device = {
329 .name = "edb93xx-audio",
333 static void __init vision_register_i2s(void)
335 ep93xx_register_i2s();
336 platform_device_register(&vision_audio_device);
339 /*************************************************************************
340 * Machine Initialization
341 *************************************************************************/
342 static void __init vision_init_machine(void)
344 ep93xx_init_devices();
345 ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_64M);
346 ep93xx_register_eth(&vision_eth_data, 1);
347 ep93xx_register_fb(&ep93xxfb_info);
348 ep93xx_register_pwm(1, 0);
351 * Request the gpio expander's interrupt gpio line now to prevent
352 * the kernel from doing a WARN in gpiolib:gpio_ensure_requested().
354 if (gpio_request_one(EP93XX_GPIO_LINE_F(7), GPIOF_DIR_IN,
356 pr_warn("cannot request interrupt gpio for pca9539:74\n");
358 vision_i2c_info[1].irq = gpio_to_irq(EP93XX_GPIO_LINE_F(7));
360 ep93xx_register_i2c(&vision_i2c_gpio_data, vision_i2c_info,
361 ARRAY_SIZE(vision_i2c_info));
362 ep93xx_register_spi(&vision_spi_master, vision_spi_board_info,
363 ARRAY_SIZE(vision_spi_board_info));
364 vision_register_i2s();
367 MACHINE_START(VISION_EP9307, "Vision Engraving Systems EP9307")
368 /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
369 .atag_offset = 0x100,
370 .map_io = vision_map_io,
371 .init_irq = ep93xx_init_irq,
372 .init_time = ep93xx_timer_init,
373 .init_machine = vision_init_machine,
374 .init_late = ep93xx_init_late,
375 .restart = ep93xx_restart,