Hartley Sweeten | 1cb17e2 | 2011-10-08 23:04:34 +0100 | [diff] [blame] | 1 | /* |
| 2 | * arch/arm/mach-ep93xx/vision_ep9307.c |
| 3 | * Vision Engraving Systems EP9307 SoM support. |
| 4 | * |
| 5 | * Copyright (C) 2008-2011 Vision Engraving Systems |
| 6 | * H Hartley Sweeten <hsweeten@visionengravers.com> |
| 7 | * |
| 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. |
| 12 | */ |
| 13 | |
| 14 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 15 | |
| 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/fb.h> |
| 22 | #include <linux/io.h> |
| 23 | #include <linux/mtd/partitions.h> |
| 24 | #include <linux/i2c.h> |
| 25 | #include <linux/i2c-gpio.h> |
Vivien Didelot | 5877457 | 2013-08-29 15:24:14 -0400 | [diff] [blame] | 26 | #include <linux/platform_data/pca953x.h> |
Hartley Sweeten | 1cb17e2 | 2011-10-08 23:04:34 +0100 | [diff] [blame] | 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> |
| 31 | |
H Hartley Sweeten | b07b4e2 | 2015-06-16 09:52:47 -0700 | [diff] [blame] | 32 | #include <sound/cs4271.h> |
| 33 | |
Hartley Sweeten | 1cb17e2 | 2011-10-08 23:04:34 +0100 | [diff] [blame] | 34 | #include <mach/hardware.h> |
Arnd Bergmann | a3b2924 | 2012-08-24 15:12:11 +0200 | [diff] [blame] | 35 | #include <linux/platform_data/video-ep93xx.h> |
| 36 | #include <linux/platform_data/spi-ep93xx.h> |
H Hartley Sweeten | e9c6c5d | 2012-02-08 09:53:44 -0700 | [diff] [blame] | 37 | #include <mach/gpio-ep93xx.h> |
Hartley Sweeten | 1cb17e2 | 2011-10-08 23:04:34 +0100 | [diff] [blame] | 38 | |
| 39 | #include <asm/mach-types.h> |
| 40 | #include <asm/mach/map.h> |
| 41 | #include <asm/mach/arch.h> |
| 42 | |
Ryan Mallon | 258249e | 2012-01-11 09:06:08 +1100 | [diff] [blame] | 43 | #include "soc.h" |
| 44 | |
Hartley Sweeten | 1cb17e2 | 2011-10-08 23:04:34 +0100 | [diff] [blame] | 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 |
| 50 | |
| 51 | static struct map_desc vision_io_desc[] __initdata = { |
| 52 | { |
| 53 | .virtual = VISION_VIRT_BASE, |
| 54 | .pfn = __phys_to_pfn(VISION_PHYS_BASE), |
| 55 | .length = SZ_4K, |
| 56 | .type = MT_DEVICE, |
| 57 | }, |
| 58 | }; |
| 59 | |
| 60 | static void __init vision_map_io(void) |
| 61 | { |
| 62 | ep93xx_map_io(); |
| 63 | |
| 64 | iotable_init(vision_io_desc, ARRAY_SIZE(vision_io_desc)); |
| 65 | } |
| 66 | |
| 67 | /************************************************************************* |
| 68 | * Ethernet |
| 69 | *************************************************************************/ |
| 70 | static struct ep93xx_eth_data vision_eth_data __initdata = { |
| 71 | .phy_id = 1, |
| 72 | }; |
| 73 | |
| 74 | /************************************************************************* |
| 75 | * Framebuffer |
| 76 | *************************************************************************/ |
| 77 | #define VISION_LCD_ENABLE EP93XX_GPIO_LINE_EGPIO1 |
| 78 | |
| 79 | static int vision_lcd_setup(struct platform_device *pdev) |
| 80 | { |
| 81 | int err; |
| 82 | |
| 83 | err = gpio_request_one(VISION_LCD_ENABLE, GPIOF_INIT_HIGH, |
| 84 | dev_name(&pdev->dev)); |
| 85 | if (err) |
| 86 | return err; |
| 87 | |
| 88 | ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_RAS | |
| 89 | EP93XX_SYSCON_DEVCFG_RASONP3 | |
| 90 | EP93XX_SYSCON_DEVCFG_EXVC); |
| 91 | |
| 92 | return 0; |
| 93 | } |
| 94 | |
| 95 | static void vision_lcd_teardown(struct platform_device *pdev) |
| 96 | { |
| 97 | gpio_free(VISION_LCD_ENABLE); |
| 98 | } |
| 99 | |
| 100 | static void vision_lcd_blank(int blank_mode, struct fb_info *info) |
| 101 | { |
| 102 | if (blank_mode) |
| 103 | gpio_set_value(VISION_LCD_ENABLE, 0); |
| 104 | else |
| 105 | gpio_set_value(VISION_LCD_ENABLE, 1); |
| 106 | } |
| 107 | |
| 108 | static struct ep93xxfb_mach_info ep93xxfb_info __initdata = { |
Hartley Sweeten | 1cb17e2 | 2011-10-08 23:04:34 +0100 | [diff] [blame] | 109 | .flags = EP93XXFB_USE_SDCSN0 | EP93XXFB_PCLK_FALLING, |
| 110 | .setup = vision_lcd_setup, |
| 111 | .teardown = vision_lcd_teardown, |
| 112 | .blank = vision_lcd_blank, |
| 113 | }; |
| 114 | |
| 115 | |
| 116 | /************************************************************************* |
| 117 | * GPIO Expanders |
| 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) |
| 123 | |
| 124 | static struct pca953x_platform_data pca953x_74_gpio_data = { |
| 125 | .gpio_base = PCA9539_74_GPIO_BASE, |
| 126 | .irq_base = EP93XX_BOARD_IRQ(0), |
| 127 | }; |
| 128 | |
| 129 | static struct pca953x_platform_data pca953x_75_gpio_data = { |
| 130 | .gpio_base = PCA9539_75_GPIO_BASE, |
| 131 | .irq_base = -1, |
| 132 | }; |
| 133 | |
| 134 | static struct pca953x_platform_data pca953x_76_gpio_data = { |
| 135 | .gpio_base = PCA9539_76_GPIO_BASE, |
| 136 | .irq_base = -1, |
| 137 | }; |
| 138 | |
| 139 | static struct pca953x_platform_data pca953x_77_gpio_data = { |
| 140 | .gpio_base = PCA9539_77_GPIO_BASE, |
| 141 | .irq_base = -1, |
| 142 | }; |
| 143 | |
| 144 | /************************************************************************* |
| 145 | * I2C Bus |
| 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, |
| 150 | }; |
| 151 | |
| 152 | static struct i2c_board_info vision_i2c_info[] __initdata = { |
| 153 | { |
| 154 | I2C_BOARD_INFO("isl1208", 0x6f), |
| 155 | .irq = IRQ_EP93XX_EXT1, |
| 156 | }, { |
| 157 | I2C_BOARD_INFO("pca9539", 0x74), |
| 158 | .platform_data = &pca953x_74_gpio_data, |
Hartley Sweeten | 1cb17e2 | 2011-10-08 23:04:34 +0100 | [diff] [blame] | 159 | }, { |
| 160 | I2C_BOARD_INFO("pca9539", 0x75), |
| 161 | .platform_data = &pca953x_75_gpio_data, |
| 162 | }, { |
| 163 | I2C_BOARD_INFO("pca9539", 0x76), |
| 164 | .platform_data = &pca953x_76_gpio_data, |
| 165 | }, { |
| 166 | I2C_BOARD_INFO("pca9539", 0x77), |
| 167 | .platform_data = &pca953x_77_gpio_data, |
| 168 | }, |
| 169 | }; |
| 170 | |
| 171 | /************************************************************************* |
H Hartley Sweeten | b07b4e2 | 2015-06-16 09:52:47 -0700 | [diff] [blame] | 172 | * SPI CS4271 Audio Codec |
| 173 | *************************************************************************/ |
| 174 | static struct cs4271_platform_data vision_cs4271_data = { |
| 175 | .gpio_nreset = EP93XX_GPIO_LINE_H(2), |
| 176 | }; |
| 177 | |
| 178 | static int vision_cs4271_hw_setup(struct spi_device *spi) |
| 179 | { |
| 180 | return gpio_request_one(EP93XX_GPIO_LINE_EGPIO6, |
| 181 | GPIOF_OUT_INIT_HIGH, spi->modalias); |
| 182 | } |
| 183 | |
| 184 | static void vision_cs4271_hw_cleanup(struct spi_device *spi) |
| 185 | { |
| 186 | gpio_free(EP93XX_GPIO_LINE_EGPIO6); |
| 187 | } |
| 188 | |
| 189 | static void vision_cs4271_hw_cs_control(struct spi_device *spi, int value) |
| 190 | { |
| 191 | gpio_set_value(EP93XX_GPIO_LINE_EGPIO6, value); |
| 192 | } |
| 193 | |
| 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, |
| 198 | }; |
| 199 | |
| 200 | /************************************************************************* |
Hartley Sweeten | 1cb17e2 | 2011-10-08 23:04:34 +0100 | [diff] [blame] | 201 | * SPI Flash |
| 202 | *************************************************************************/ |
| 203 | #define VISION_SPI_FLASH_CS EP93XX_GPIO_LINE_EGPIO7 |
| 204 | |
| 205 | static struct mtd_partition vision_spi_flash_partitions[] = { |
| 206 | { |
| 207 | .name = "SPI bootstrap", |
| 208 | .offset = 0, |
| 209 | .size = SZ_4K, |
| 210 | }, { |
| 211 | .name = "Bootstrap config", |
| 212 | .offset = MTDPART_OFS_APPEND, |
| 213 | .size = SZ_4K, |
| 214 | }, { |
| 215 | .name = "System config", |
| 216 | .offset = MTDPART_OFS_APPEND, |
| 217 | .size = MTDPART_SIZ_FULL, |
| 218 | }, |
| 219 | }; |
| 220 | |
| 221 | static struct flash_platform_data vision_spi_flash_data = { |
| 222 | .name = "SPI Flash", |
| 223 | .parts = vision_spi_flash_partitions, |
| 224 | .nr_parts = ARRAY_SIZE(vision_spi_flash_partitions), |
| 225 | }; |
| 226 | |
| 227 | static int vision_spi_flash_hw_setup(struct spi_device *spi) |
| 228 | { |
| 229 | return gpio_request_one(VISION_SPI_FLASH_CS, GPIOF_INIT_HIGH, |
| 230 | spi->modalias); |
| 231 | } |
| 232 | |
| 233 | static void vision_spi_flash_hw_cleanup(struct spi_device *spi) |
| 234 | { |
| 235 | gpio_free(VISION_SPI_FLASH_CS); |
| 236 | } |
| 237 | |
| 238 | static void vision_spi_flash_hw_cs_control(struct spi_device *spi, int value) |
| 239 | { |
| 240 | gpio_set_value(VISION_SPI_FLASH_CS, value); |
| 241 | } |
| 242 | |
| 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, |
| 247 | }; |
| 248 | |
| 249 | /************************************************************************* |
| 250 | * SPI SD/MMC host |
| 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 |
| 255 | |
Hartley Sweeten | 1cb17e2 | 2011-10-08 23:04:34 +0100 | [diff] [blame] | 256 | static struct mmc_spi_platform_data vision_spi_mmc_data = { |
Hartley Sweeten | 1cb17e2 | 2011-10-08 23:04:34 +0100 | [diff] [blame] | 257 | .detect_delay = 100, |
| 258 | .powerup_msecs = 100, |
| 259 | .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34, |
Laurent Pinchart | 2a4f6b1 | 2013-08-08 12:38:33 +0200 | [diff] [blame] | 260 | .flags = MMC_SPI_USE_CD_GPIO | MMC_SPI_USE_RO_GPIO, |
| 261 | .cd_gpio = VISION_SPI_MMC_CD, |
| 262 | .cd_debounce = 1, |
| 263 | .ro_gpio = VISION_SPI_MMC_WP, |
| 264 | .caps2 = MMC_CAP2_RO_ACTIVE_HIGH, |
Hartley Sweeten | 1cb17e2 | 2011-10-08 23:04:34 +0100 | [diff] [blame] | 265 | }; |
| 266 | |
| 267 | static int vision_spi_mmc_hw_setup(struct spi_device *spi) |
| 268 | { |
| 269 | return gpio_request_one(VISION_SPI_MMC_CS, GPIOF_INIT_HIGH, |
| 270 | spi->modalias); |
| 271 | } |
| 272 | |
| 273 | static void vision_spi_mmc_hw_cleanup(struct spi_device *spi) |
| 274 | { |
| 275 | gpio_free(VISION_SPI_MMC_CS); |
| 276 | } |
| 277 | |
| 278 | static void vision_spi_mmc_hw_cs_control(struct spi_device *spi, int value) |
| 279 | { |
| 280 | gpio_set_value(VISION_SPI_MMC_CS, value); |
| 281 | } |
| 282 | |
| 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, |
| 287 | }; |
| 288 | |
| 289 | /************************************************************************* |
| 290 | * SPI Bus |
| 291 | *************************************************************************/ |
| 292 | static struct spi_board_info vision_spi_board_info[] __initdata = { |
| 293 | { |
H Hartley Sweeten | b07b4e2 | 2015-06-16 09:52:47 -0700 | [diff] [blame] | 294 | .modalias = "cs4271", |
| 295 | .platform_data = &vision_cs4271_data, |
| 296 | .controller_data = &vision_cs4271_hw, |
| 297 | .max_speed_hz = 6000000, |
| 298 | .bus_num = 0, |
| 299 | .chip_select = 0, |
| 300 | .mode = SPI_MODE_3, |
| 301 | }, { |
Hartley Sweeten | 1cb17e2 | 2011-10-08 23:04:34 +0100 | [diff] [blame] | 302 | .modalias = "sst25l", |
| 303 | .platform_data = &vision_spi_flash_data, |
| 304 | .controller_data = &vision_spi_flash_hw, |
| 305 | .max_speed_hz = 20000000, |
| 306 | .bus_num = 0, |
H Hartley Sweeten | b07b4e2 | 2015-06-16 09:52:47 -0700 | [diff] [blame] | 307 | .chip_select = 1, |
Hartley Sweeten | 1cb17e2 | 2011-10-08 23:04:34 +0100 | [diff] [blame] | 308 | .mode = SPI_MODE_3, |
| 309 | }, { |
| 310 | .modalias = "mmc_spi", |
| 311 | .platform_data = &vision_spi_mmc_data, |
| 312 | .controller_data = &vision_spi_mmc_hw, |
| 313 | .max_speed_hz = 20000000, |
| 314 | .bus_num = 0, |
H Hartley Sweeten | b07b4e2 | 2015-06-16 09:52:47 -0700 | [diff] [blame] | 315 | .chip_select = 2, |
Hartley Sweeten | 1cb17e2 | 2011-10-08 23:04:34 +0100 | [diff] [blame] | 316 | .mode = SPI_MODE_3, |
| 317 | }, |
| 318 | }; |
| 319 | |
| 320 | static struct ep93xx_spi_info vision_spi_master __initdata = { |
H Hartley Sweeten | 2510523 | 2015-06-16 09:52:46 -0700 | [diff] [blame] | 321 | .num_chipselect = ARRAY_SIZE(vision_spi_board_info), |
| 322 | .use_dma = 1, |
Hartley Sweeten | 1cb17e2 | 2011-10-08 23:04:34 +0100 | [diff] [blame] | 323 | }; |
| 324 | |
| 325 | /************************************************************************* |
H Hartley Sweeten | b07b4e2 | 2015-06-16 09:52:47 -0700 | [diff] [blame] | 326 | * I2S Audio |
| 327 | *************************************************************************/ |
| 328 | static struct platform_device vision_audio_device = { |
| 329 | .name = "edb93xx-audio", |
| 330 | .id = -1, |
| 331 | }; |
| 332 | |
| 333 | static void __init vision_register_i2s(void) |
| 334 | { |
| 335 | ep93xx_register_i2s(); |
| 336 | platform_device_register(&vision_audio_device); |
| 337 | } |
| 338 | |
| 339 | /************************************************************************* |
Hartley Sweeten | 1cb17e2 | 2011-10-08 23:04:34 +0100 | [diff] [blame] | 340 | * Machine Initialization |
| 341 | *************************************************************************/ |
| 342 | static void __init vision_init_machine(void) |
| 343 | { |
| 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); |
| 349 | |
| 350 | /* |
| 351 | * Request the gpio expander's interrupt gpio line now to prevent |
| 352 | * the kernel from doing a WARN in gpiolib:gpio_ensure_requested(). |
| 353 | */ |
| 354 | if (gpio_request_one(EP93XX_GPIO_LINE_F(7), GPIOF_DIR_IN, |
| 355 | "pca9539:74")) |
| 356 | pr_warn("cannot request interrupt gpio for pca9539:74\n"); |
| 357 | |
H Hartley Sweeten | e9c6c5d | 2012-02-08 09:53:44 -0700 | [diff] [blame] | 358 | vision_i2c_info[1].irq = gpio_to_irq(EP93XX_GPIO_LINE_F(7)); |
| 359 | |
Hartley Sweeten | 1cb17e2 | 2011-10-08 23:04:34 +0100 | [diff] [blame] | 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)); |
H Hartley Sweeten | b07b4e2 | 2015-06-16 09:52:47 -0700 | [diff] [blame] | 364 | vision_register_i2s(); |
Hartley Sweeten | 1cb17e2 | 2011-10-08 23:04:34 +0100 | [diff] [blame] | 365 | } |
| 366 | |
| 367 | MACHINE_START(VISION_EP9307, "Vision Engraving Systems EP9307") |
| 368 | /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */ |
Arnd Bergmann | a7fadac | 2011-10-31 23:58:06 +0100 | [diff] [blame] | 369 | .atag_offset = 0x100, |
Hartley Sweeten | 1cb17e2 | 2011-10-08 23:04:34 +0100 | [diff] [blame] | 370 | .map_io = vision_map_io, |
| 371 | .init_irq = ep93xx_init_irq, |
Stephen Warren | 6bb27d7 | 2012-11-08 12:40:59 -0700 | [diff] [blame] | 372 | .init_time = ep93xx_timer_init, |
Hartley Sweeten | 1cb17e2 | 2011-10-08 23:04:34 +0100 | [diff] [blame] | 373 | .init_machine = vision_init_machine, |
Shawn Guo | c914283 | 2012-04-26 10:05:15 +0800 | [diff] [blame] | 374 | .init_late = ep93xx_init_late, |
Russell King | 3275166 | 2011-11-05 09:54:14 +0000 | [diff] [blame] | 375 | .restart = ep93xx_restart, |
Hartley Sweeten | 1cb17e2 | 2011-10-08 23:04:34 +0100 | [diff] [blame] | 376 | MACHINE_END |