devices.c 7.3 KB

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  1. // SPDX-License-Identifier: GPL-2.0-or-later
  2. /*
  3. * mach-davinci/devices.c
  4. *
  5. * DaVinci platform device setup/initialization
  6. */
  7. #include <linux/init.h>
  8. #include <linux/platform_device.h>
  9. #include <linux/platform_data/i2c-davinci.h>
  10. #include <linux/platform_data/mmc-davinci.h>
  11. #include <linux/platform_data/edma.h>
  12. #include <linux/dma-mapping.h>
  13. #include <linux/io.h>
  14. #include <linux/reboot.h>
  15. #include <mach/hardware.h>
  16. #include <mach/cputype.h>
  17. #include <mach/mux.h>
  18. #include "davinci.h"
  19. #include "irqs.h"
  20. #define DAVINCI_I2C_BASE 0x01C21000
  21. #define DAVINCI_ATA_BASE 0x01C66000
  22. #define DAVINCI_MMCSD0_BASE 0x01E10000
  23. #define DM355_MMCSD0_BASE 0x01E11000
  24. #define DM355_MMCSD1_BASE 0x01E00000
  25. #define DM365_MMCSD0_BASE 0x01D11000
  26. #define DM365_MMCSD1_BASE 0x01D00000
  27. void __iomem *davinci_sysmod_base;
  28. void davinci_map_sysmod(void)
  29. {
  30. davinci_sysmod_base = ioremap(DAVINCI_SYSTEM_MODULE_BASE,
  31. 0x800);
  32. /*
  33. * Throw a bug since a lot of board initialization code depends
  34. * on system module availability. ioremap() failing this early
  35. * need careful looking into anyway.
  36. */
  37. BUG_ON(!davinci_sysmod_base);
  38. }
  39. static struct resource i2c_resources[] = {
  40. {
  41. .start = DAVINCI_I2C_BASE,
  42. .end = DAVINCI_I2C_BASE + 0x40,
  43. .flags = IORESOURCE_MEM,
  44. },
  45. {
  46. .start = DAVINCI_INTC_IRQ(IRQ_I2C),
  47. .flags = IORESOURCE_IRQ,
  48. },
  49. };
  50. static struct platform_device davinci_i2c_device = {
  51. .name = "i2c_davinci",
  52. .id = 1,
  53. .num_resources = ARRAY_SIZE(i2c_resources),
  54. .resource = i2c_resources,
  55. };
  56. void __init davinci_init_i2c(struct davinci_i2c_platform_data *pdata)
  57. {
  58. if (cpu_is_davinci_dm644x())
  59. davinci_cfg_reg(DM644X_I2C);
  60. davinci_i2c_device.dev.platform_data = pdata;
  61. (void) platform_device_register(&davinci_i2c_device);
  62. }
  63. static struct resource ide_resources[] = {
  64. {
  65. .start = DAVINCI_ATA_BASE,
  66. .end = DAVINCI_ATA_BASE + 0x7ff,
  67. .flags = IORESOURCE_MEM,
  68. },
  69. {
  70. .start = DAVINCI_INTC_IRQ(IRQ_IDE),
  71. .end = DAVINCI_INTC_IRQ(IRQ_IDE),
  72. .flags = IORESOURCE_IRQ,
  73. },
  74. };
  75. static u64 ide_dma_mask = DMA_BIT_MASK(32);
  76. static struct platform_device ide_device = {
  77. .name = "palm_bk3710",
  78. .id = -1,
  79. .resource = ide_resources,
  80. .num_resources = ARRAY_SIZE(ide_resources),
  81. .dev = {
  82. .dma_mask = &ide_dma_mask,
  83. .coherent_dma_mask = DMA_BIT_MASK(32),
  84. },
  85. };
  86. void __init davinci_init_ide(void)
  87. {
  88. if (cpu_is_davinci_dm644x()) {
  89. davinci_cfg_reg(DM644X_HPIEN_DISABLE);
  90. davinci_cfg_reg(DM644X_ATAEN);
  91. davinci_cfg_reg(DM644X_HDIREN);
  92. } else if (cpu_is_davinci_dm646x()) {
  93. /* IRQ_DM646X_IDE is the same as IRQ_IDE */
  94. davinci_cfg_reg(DM646X_ATAEN);
  95. } else {
  96. WARN_ON(1);
  97. return;
  98. }
  99. platform_device_register(&ide_device);
  100. }
  101. #if IS_ENABLED(CONFIG_MMC_DAVINCI)
  102. static u64 mmcsd0_dma_mask = DMA_BIT_MASK(32);
  103. static struct resource mmcsd0_resources[] = {
  104. {
  105. /* different on dm355 */
  106. .start = DAVINCI_MMCSD0_BASE,
  107. .end = DAVINCI_MMCSD0_BASE + SZ_4K - 1,
  108. .flags = IORESOURCE_MEM,
  109. },
  110. /* IRQs: MMC/SD, then SDIO */
  111. {
  112. .start = DAVINCI_INTC_IRQ(IRQ_MMCINT),
  113. .flags = IORESOURCE_IRQ,
  114. }, {
  115. /* different on dm355 */
  116. .start = DAVINCI_INTC_IRQ(IRQ_SDIOINT),
  117. .flags = IORESOURCE_IRQ,
  118. },
  119. };
  120. static struct platform_device davinci_mmcsd0_device = {
  121. .name = "dm6441-mmc",
  122. .id = 0,
  123. .dev = {
  124. .dma_mask = &mmcsd0_dma_mask,
  125. .coherent_dma_mask = DMA_BIT_MASK(32),
  126. },
  127. .num_resources = ARRAY_SIZE(mmcsd0_resources),
  128. .resource = mmcsd0_resources,
  129. };
  130. static u64 mmcsd1_dma_mask = DMA_BIT_MASK(32);
  131. static struct resource mmcsd1_resources[] = {
  132. {
  133. .start = DM355_MMCSD1_BASE,
  134. .end = DM355_MMCSD1_BASE + SZ_4K - 1,
  135. .flags = IORESOURCE_MEM,
  136. },
  137. /* IRQs: MMC/SD, then SDIO */
  138. {
  139. .start = DAVINCI_INTC_IRQ(IRQ_DM355_MMCINT1),
  140. .flags = IORESOURCE_IRQ,
  141. }, {
  142. .start = DAVINCI_INTC_IRQ(IRQ_DM355_SDIOINT1),
  143. .flags = IORESOURCE_IRQ,
  144. },
  145. };
  146. static struct platform_device davinci_mmcsd1_device = {
  147. .name = "dm6441-mmc",
  148. .id = 1,
  149. .dev = {
  150. .dma_mask = &mmcsd1_dma_mask,
  151. .coherent_dma_mask = DMA_BIT_MASK(32),
  152. },
  153. .num_resources = ARRAY_SIZE(mmcsd1_resources),
  154. .resource = mmcsd1_resources,
  155. };
  156. void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
  157. {
  158. struct platform_device *pdev = NULL;
  159. if (WARN_ON(cpu_is_davinci_dm646x()))
  160. return;
  161. /* REVISIT: update PINMUX, ARM_IRQMUX, and EDMA_EVTMUX here too;
  162. * for example if MMCSD1 is used for SDIO, maybe DAT2 is unused.
  163. *
  164. * FIXME dm6441 (no MMC/SD), dm357 (one), and dm335 (two) are
  165. * not handled right here ...
  166. */
  167. switch (module) {
  168. case 1:
  169. if (cpu_is_davinci_dm355()) {
  170. /* REVISIT we may not need all these pins if e.g. this
  171. * is a hard-wired SDIO device...
  172. */
  173. davinci_cfg_reg(DM355_SD1_CMD);
  174. davinci_cfg_reg(DM355_SD1_CLK);
  175. davinci_cfg_reg(DM355_SD1_DATA0);
  176. davinci_cfg_reg(DM355_SD1_DATA1);
  177. davinci_cfg_reg(DM355_SD1_DATA2);
  178. davinci_cfg_reg(DM355_SD1_DATA3);
  179. } else if (cpu_is_davinci_dm365()) {
  180. /* Configure pull down control */
  181. unsigned v;
  182. v = __raw_readl(DAVINCI_SYSMOD_VIRT(SYSMOD_PUPDCTL1));
  183. __raw_writel(v & ~0xfc0,
  184. DAVINCI_SYSMOD_VIRT(SYSMOD_PUPDCTL1));
  185. mmcsd1_resources[0].start = DM365_MMCSD1_BASE;
  186. mmcsd1_resources[0].end = DM365_MMCSD1_BASE +
  187. SZ_4K - 1;
  188. mmcsd1_resources[2].start = DAVINCI_INTC_IRQ(
  189. IRQ_DM365_SDIOINT1);
  190. davinci_mmcsd1_device.name = "da830-mmc";
  191. } else
  192. break;
  193. pdev = &davinci_mmcsd1_device;
  194. break;
  195. case 0:
  196. if (cpu_is_davinci_dm355()) {
  197. mmcsd0_resources[0].start = DM355_MMCSD0_BASE;
  198. mmcsd0_resources[0].end = DM355_MMCSD0_BASE + SZ_4K - 1;
  199. mmcsd0_resources[2].start = DAVINCI_INTC_IRQ(
  200. IRQ_DM355_SDIOINT0);
  201. /* expose all 6 MMC0 signals: CLK, CMD, DATA[0..3] */
  202. davinci_cfg_reg(DM355_MMCSD0);
  203. /* enable RX EDMA */
  204. davinci_cfg_reg(DM355_EVT26_MMC0_RX);
  205. } else if (cpu_is_davinci_dm365()) {
  206. mmcsd0_resources[0].start = DM365_MMCSD0_BASE;
  207. mmcsd0_resources[0].end = DM365_MMCSD0_BASE +
  208. SZ_4K - 1;
  209. mmcsd0_resources[2].start = DAVINCI_INTC_IRQ(
  210. IRQ_DM365_SDIOINT0);
  211. davinci_mmcsd0_device.name = "da830-mmc";
  212. } else if (cpu_is_davinci_dm644x()) {
  213. /* REVISIT: should this be in board-init code? */
  214. /* Power-on 3.3V IO cells */
  215. __raw_writel(0,
  216. DAVINCI_SYSMOD_VIRT(SYSMOD_VDD3P3VPWDN));
  217. /*Set up the pull regiter for MMC */
  218. davinci_cfg_reg(DM644X_MSTK);
  219. }
  220. pdev = &davinci_mmcsd0_device;
  221. break;
  222. }
  223. if (WARN_ON(!pdev))
  224. return;
  225. pdev->dev.platform_data = config;
  226. platform_device_register(pdev);
  227. }
  228. #else
  229. void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
  230. {
  231. }
  232. #endif
  233. /*-------------------------------------------------------------------------*/
  234. static struct resource wdt_resources[] = {
  235. {
  236. .start = DAVINCI_WDOG_BASE,
  237. .end = DAVINCI_WDOG_BASE + SZ_1K - 1,
  238. .flags = IORESOURCE_MEM,
  239. },
  240. };
  241. static struct platform_device davinci_wdt_device = {
  242. .name = "davinci-wdt",
  243. .id = -1,
  244. .num_resources = ARRAY_SIZE(wdt_resources),
  245. .resource = wdt_resources,
  246. };
  247. int davinci_init_wdt(void)
  248. {
  249. return platform_device_register(&davinci_wdt_device);
  250. }
  251. static struct platform_device davinci_gpio_device = {
  252. .name = "davinci_gpio",
  253. .id = -1,
  254. };
  255. int davinci_gpio_register(struct resource *res, int size, void *pdata)
  256. {
  257. davinci_gpio_device.resource = res;
  258. davinci_gpio_device.num_resources = size;
  259. davinci_gpio_device.dev.platform_data = pdata;
  260. return platform_device_register(&davinci_gpio_device);
  261. }