vision_ep9307.c 8.6 KB

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  1. // SPDX-License-Identifier: GPL-2.0-or-later
  2. /*
  3. * arch/arm/mach-ep93xx/vision_ep9307.c
  4. * Vision Engraving Systems EP9307 SoM support.
  5. *
  6. * Copyright (C) 2008-2011 Vision Engraving Systems
  7. * H Hartley Sweeten <hsweeten@visionengravers.com>
  8. */
  9. #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  10. #include <linux/kernel.h>
  11. #include <linux/init.h>
  12. #include <linux/platform_device.h>
  13. #include <linux/irq.h>
  14. #include <linux/gpio.h>
  15. #include <linux/gpio/machine.h>
  16. #include <linux/fb.h>
  17. #include <linux/io.h>
  18. #include <linux/mtd/partitions.h>
  19. #include <linux/i2c.h>
  20. #include <linux/platform_data/pca953x.h>
  21. #include <linux/spi/spi.h>
  22. #include <linux/spi/flash.h>
  23. #include <linux/spi/mmc_spi.h>
  24. #include <linux/mmc/host.h>
  25. #include <sound/cs4271.h>
  26. #include "hardware.h"
  27. #include <linux/platform_data/video-ep93xx.h>
  28. #include <linux/platform_data/spi-ep93xx.h>
  29. #include "gpio-ep93xx.h"
  30. #include <asm/mach-types.h>
  31. #include <asm/mach/map.h>
  32. #include <asm/mach/arch.h>
  33. #include "soc.h"
  34. /*************************************************************************
  35. * Static I/O mappings for the FPGA
  36. *************************************************************************/
  37. #define VISION_PHYS_BASE EP93XX_CS7_PHYS_BASE
  38. #define VISION_VIRT_BASE 0xfebff000
  39. static struct map_desc vision_io_desc[] __initdata = {
  40. {
  41. .virtual = VISION_VIRT_BASE,
  42. .pfn = __phys_to_pfn(VISION_PHYS_BASE),
  43. .length = SZ_4K,
  44. .type = MT_DEVICE,
  45. },
  46. };
  47. static void __init vision_map_io(void)
  48. {
  49. ep93xx_map_io();
  50. iotable_init(vision_io_desc, ARRAY_SIZE(vision_io_desc));
  51. }
  52. /*************************************************************************
  53. * Ethernet
  54. *************************************************************************/
  55. static struct ep93xx_eth_data vision_eth_data __initdata = {
  56. .phy_id = 1,
  57. };
  58. /*************************************************************************
  59. * Framebuffer
  60. *************************************************************************/
  61. #define VISION_LCD_ENABLE EP93XX_GPIO_LINE_EGPIO1
  62. static int vision_lcd_setup(struct platform_device *pdev)
  63. {
  64. int err;
  65. err = gpio_request_one(VISION_LCD_ENABLE, GPIOF_INIT_HIGH,
  66. dev_name(&pdev->dev));
  67. if (err)
  68. return err;
  69. ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_RAS |
  70. EP93XX_SYSCON_DEVCFG_RASONP3 |
  71. EP93XX_SYSCON_DEVCFG_EXVC);
  72. return 0;
  73. }
  74. static void vision_lcd_teardown(struct platform_device *pdev)
  75. {
  76. gpio_free(VISION_LCD_ENABLE);
  77. }
  78. static void vision_lcd_blank(int blank_mode, struct fb_info *info)
  79. {
  80. if (blank_mode)
  81. gpio_set_value(VISION_LCD_ENABLE, 0);
  82. else
  83. gpio_set_value(VISION_LCD_ENABLE, 1);
  84. }
  85. static struct ep93xxfb_mach_info ep93xxfb_info __initdata = {
  86. .flags = EP93XXFB_USE_SDCSN0 | EP93XXFB_PCLK_FALLING,
  87. .setup = vision_lcd_setup,
  88. .teardown = vision_lcd_teardown,
  89. .blank = vision_lcd_blank,
  90. };
  91. /*************************************************************************
  92. * GPIO Expanders
  93. *************************************************************************/
  94. #define PCA9539_74_GPIO_BASE (EP93XX_GPIO_LINE_MAX + 1)
  95. #define PCA9539_75_GPIO_BASE (PCA9539_74_GPIO_BASE + 16)
  96. #define PCA9539_76_GPIO_BASE (PCA9539_75_GPIO_BASE + 16)
  97. #define PCA9539_77_GPIO_BASE (PCA9539_76_GPIO_BASE + 16)
  98. static struct pca953x_platform_data pca953x_74_gpio_data = {
  99. .gpio_base = PCA9539_74_GPIO_BASE,
  100. .irq_base = EP93XX_BOARD_IRQ(0),
  101. };
  102. static struct pca953x_platform_data pca953x_75_gpio_data = {
  103. .gpio_base = PCA9539_75_GPIO_BASE,
  104. .irq_base = -1,
  105. };
  106. static struct pca953x_platform_data pca953x_76_gpio_data = {
  107. .gpio_base = PCA9539_76_GPIO_BASE,
  108. .irq_base = -1,
  109. };
  110. static struct pca953x_platform_data pca953x_77_gpio_data = {
  111. .gpio_base = PCA9539_77_GPIO_BASE,
  112. .irq_base = -1,
  113. };
  114. /*************************************************************************
  115. * I2C Bus
  116. *************************************************************************/
  117. static struct i2c_board_info vision_i2c_info[] __initdata = {
  118. {
  119. I2C_BOARD_INFO("isl1208", 0x6f),
  120. .irq = IRQ_EP93XX_EXT1,
  121. }, {
  122. I2C_BOARD_INFO("pca9539", 0x74),
  123. .platform_data = &pca953x_74_gpio_data,
  124. }, {
  125. I2C_BOARD_INFO("pca9539", 0x75),
  126. .platform_data = &pca953x_75_gpio_data,
  127. }, {
  128. I2C_BOARD_INFO("pca9539", 0x76),
  129. .platform_data = &pca953x_76_gpio_data,
  130. }, {
  131. I2C_BOARD_INFO("pca9539", 0x77),
  132. .platform_data = &pca953x_77_gpio_data,
  133. },
  134. };
  135. /*************************************************************************
  136. * SPI CS4271 Audio Codec
  137. *************************************************************************/
  138. static struct cs4271_platform_data vision_cs4271_data = {
  139. .gpio_nreset = EP93XX_GPIO_LINE_H(2),
  140. };
  141. /*************************************************************************
  142. * SPI Flash
  143. *************************************************************************/
  144. static struct mtd_partition vision_spi_flash_partitions[] = {
  145. {
  146. .name = "SPI bootstrap",
  147. .offset = 0,
  148. .size = SZ_4K,
  149. }, {
  150. .name = "Bootstrap config",
  151. .offset = MTDPART_OFS_APPEND,
  152. .size = SZ_4K,
  153. }, {
  154. .name = "System config",
  155. .offset = MTDPART_OFS_APPEND,
  156. .size = MTDPART_SIZ_FULL,
  157. },
  158. };
  159. static struct flash_platform_data vision_spi_flash_data = {
  160. .name = "SPI Flash",
  161. .parts = vision_spi_flash_partitions,
  162. .nr_parts = ARRAY_SIZE(vision_spi_flash_partitions),
  163. };
  164. /*************************************************************************
  165. * SPI SD/MMC host
  166. *************************************************************************/
  167. static struct mmc_spi_platform_data vision_spi_mmc_data = {
  168. .detect_delay = 100,
  169. .powerup_msecs = 100,
  170. .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34,
  171. .caps2 = MMC_CAP2_RO_ACTIVE_HIGH,
  172. };
  173. static struct gpiod_lookup_table vision_spi_mmc_gpio_table = {
  174. .dev_id = "mmc_spi.2", /* "mmc_spi @ CS2 */
  175. .table = {
  176. /* Card detect */
  177. GPIO_LOOKUP_IDX("B", 7, NULL, 0, GPIO_ACTIVE_LOW),
  178. /* Write protect */
  179. GPIO_LOOKUP_IDX("F", 0, NULL, 1, GPIO_ACTIVE_HIGH),
  180. { },
  181. },
  182. };
  183. /*************************************************************************
  184. * SPI Bus
  185. *************************************************************************/
  186. static struct spi_board_info vision_spi_board_info[] __initdata = {
  187. {
  188. .modalias = "cs4271",
  189. .platform_data = &vision_cs4271_data,
  190. .max_speed_hz = 6000000,
  191. .bus_num = 0,
  192. .chip_select = 0,
  193. .mode = SPI_MODE_3,
  194. }, {
  195. .modalias = "sst25l",
  196. .platform_data = &vision_spi_flash_data,
  197. .max_speed_hz = 20000000,
  198. .bus_num = 0,
  199. .chip_select = 1,
  200. .mode = SPI_MODE_3,
  201. }, {
  202. .modalias = "mmc_spi",
  203. .platform_data = &vision_spi_mmc_data,
  204. .max_speed_hz = 20000000,
  205. .bus_num = 0,
  206. .chip_select = 2,
  207. .mode = SPI_MODE_3,
  208. },
  209. };
  210. static struct gpiod_lookup_table vision_spi_cs_gpio_table = {
  211. .dev_id = "spi0",
  212. .table = {
  213. GPIO_LOOKUP_IDX("A", 6, "cs", 0, GPIO_ACTIVE_LOW),
  214. GPIO_LOOKUP_IDX("A", 7, "cs", 1, GPIO_ACTIVE_LOW),
  215. GPIO_LOOKUP_IDX("G", 2, "cs", 2, GPIO_ACTIVE_LOW),
  216. { },
  217. },
  218. };
  219. static struct ep93xx_spi_info vision_spi_master __initdata = {
  220. .use_dma = 1,
  221. };
  222. /*************************************************************************
  223. * I2S Audio
  224. *************************************************************************/
  225. static struct platform_device vision_audio_device = {
  226. .name = "edb93xx-audio",
  227. .id = -1,
  228. };
  229. static void __init vision_register_i2s(void)
  230. {
  231. ep93xx_register_i2s();
  232. platform_device_register(&vision_audio_device);
  233. }
  234. /*************************************************************************
  235. * Machine Initialization
  236. *************************************************************************/
  237. static void __init vision_init_machine(void)
  238. {
  239. ep93xx_init_devices();
  240. ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_64M);
  241. ep93xx_register_eth(&vision_eth_data, 1);
  242. ep93xx_register_fb(&ep93xxfb_info);
  243. ep93xx_register_pwm(1, 0);
  244. /*
  245. * Request the gpio expander's interrupt gpio line now to prevent
  246. * the kernel from doing a WARN in gpiolib:gpio_ensure_requested().
  247. */
  248. if (gpio_request_one(EP93XX_GPIO_LINE_F(7), GPIOF_DIR_IN,
  249. "pca9539:74"))
  250. pr_warn("cannot request interrupt gpio for pca9539:74\n");
  251. vision_i2c_info[1].irq = gpio_to_irq(EP93XX_GPIO_LINE_F(7));
  252. ep93xx_register_i2c(vision_i2c_info,
  253. ARRAY_SIZE(vision_i2c_info));
  254. gpiod_add_lookup_table(&vision_spi_mmc_gpio_table);
  255. gpiod_add_lookup_table(&vision_spi_cs_gpio_table);
  256. ep93xx_register_spi(&vision_spi_master, vision_spi_board_info,
  257. ARRAY_SIZE(vision_spi_board_info));
  258. vision_register_i2s();
  259. }
  260. MACHINE_START(VISION_EP9307, "Vision Engraving Systems EP9307")
  261. /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
  262. .atag_offset = 0x100,
  263. .map_io = vision_map_io,
  264. .init_irq = ep93xx_init_irq,
  265. .init_time = ep93xx_timer_init,
  266. .init_machine = vision_init_machine,
  267. .init_late = ep93xx_init_late,
  268. .restart = ep93xx_restart,
  269. MACHINE_END