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>
21 #include <linux/gpio/machine.h>
24 #include <linux/mtd/partitions.h>
25 #include <linux/i2c.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 *************************************************************************/
148 static struct i2c_board_info vision_i2c_info[] __initdata = {
150 I2C_BOARD_INFO("isl1208", 0x6f),
151 .irq = IRQ_EP93XX_EXT1,
153 I2C_BOARD_INFO("pca9539", 0x74),
154 .platform_data = &pca953x_74_gpio_data,
156 I2C_BOARD_INFO("pca9539", 0x75),
157 .platform_data = &pca953x_75_gpio_data,
159 I2C_BOARD_INFO("pca9539", 0x76),
160 .platform_data = &pca953x_76_gpio_data,
162 I2C_BOARD_INFO("pca9539", 0x77),
163 .platform_data = &pca953x_77_gpio_data,
167 /*************************************************************************
168 * SPI CS4271 Audio Codec
169 *************************************************************************/
170 static struct cs4271_platform_data vision_cs4271_data = {
171 .gpio_nreset = EP93XX_GPIO_LINE_H(2),
174 /*************************************************************************
176 *************************************************************************/
177 static struct mtd_partition vision_spi_flash_partitions[] = {
179 .name = "SPI bootstrap",
183 .name = "Bootstrap config",
184 .offset = MTDPART_OFS_APPEND,
187 .name = "System config",
188 .offset = MTDPART_OFS_APPEND,
189 .size = MTDPART_SIZ_FULL,
193 static struct flash_platform_data vision_spi_flash_data = {
195 .parts = vision_spi_flash_partitions,
196 .nr_parts = ARRAY_SIZE(vision_spi_flash_partitions),
199 /*************************************************************************
201 *************************************************************************/
202 static struct mmc_spi_platform_data vision_spi_mmc_data = {
204 .powerup_msecs = 100,
205 .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34,
206 .caps2 = MMC_CAP2_RO_ACTIVE_HIGH,
209 static struct gpiod_lookup_table vision_spi_mmc_gpio_table = {
210 .dev_id = "mmc_spi.2", /* "mmc_spi @ CS2 */
213 GPIO_LOOKUP_IDX("B", 7, NULL, 0, GPIO_ACTIVE_LOW),
215 GPIO_LOOKUP_IDX("F", 0, NULL, 1, GPIO_ACTIVE_HIGH),
220 /*************************************************************************
222 *************************************************************************/
223 static struct spi_board_info vision_spi_board_info[] __initdata = {
225 .modalias = "cs4271",
226 .platform_data = &vision_cs4271_data,
227 .max_speed_hz = 6000000,
232 .modalias = "sst25l",
233 .platform_data = &vision_spi_flash_data,
234 .max_speed_hz = 20000000,
239 .modalias = "mmc_spi",
240 .platform_data = &vision_spi_mmc_data,
241 .max_speed_hz = 20000000,
248 static int vision_spi_chipselects[] __initdata = {
249 EP93XX_GPIO_LINE_EGPIO6,
250 EP93XX_GPIO_LINE_EGPIO7,
251 EP93XX_GPIO_LINE_G(2),
254 static struct ep93xx_spi_info vision_spi_master __initdata = {
255 .chipselect = vision_spi_chipselects,
256 .num_chipselect = ARRAY_SIZE(vision_spi_chipselects),
260 /*************************************************************************
262 *************************************************************************/
263 static struct platform_device vision_audio_device = {
264 .name = "edb93xx-audio",
268 static void __init vision_register_i2s(void)
270 ep93xx_register_i2s();
271 platform_device_register(&vision_audio_device);
274 /*************************************************************************
275 * Machine Initialization
276 *************************************************************************/
277 static void __init vision_init_machine(void)
279 ep93xx_init_devices();
280 ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_64M);
281 ep93xx_register_eth(&vision_eth_data, 1);
282 ep93xx_register_fb(&ep93xxfb_info);
283 ep93xx_register_pwm(1, 0);
286 * Request the gpio expander's interrupt gpio line now to prevent
287 * the kernel from doing a WARN in gpiolib:gpio_ensure_requested().
289 if (gpio_request_one(EP93XX_GPIO_LINE_F(7), GPIOF_DIR_IN,
291 pr_warn("cannot request interrupt gpio for pca9539:74\n");
293 vision_i2c_info[1].irq = gpio_to_irq(EP93XX_GPIO_LINE_F(7));
295 ep93xx_register_i2c(vision_i2c_info,
296 ARRAY_SIZE(vision_i2c_info));
297 gpiod_add_lookup_table(&vision_spi_mmc_gpio_table);
298 ep93xx_register_spi(&vision_spi_master, vision_spi_board_info,
299 ARRAY_SIZE(vision_spi_board_info));
300 vision_register_i2s();
303 MACHINE_START(VISION_EP9307, "Vision Engraving Systems EP9307")
304 /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
305 .atag_offset = 0x100,
306 .map_io = vision_map_io,
307 .init_irq = ep93xx_init_irq,
308 .init_time = ep93xx_timer_init,
309 .init_machine = vision_init_machine,
310 .init_late = ep93xx_init_late,
311 .restart = ep93xx_restart,