usb.c 3.8 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175
  1. /*
  2. * USB
  3. */
  4. #include <linux/init.h>
  5. #include <linux/platform_device.h>
  6. #include <linux/dma-mapping.h>
  7. #include <linux/usb/musb.h>
  8. #include <mach/common.h>
  9. #include <mach/irqs.h>
  10. #include <mach/cputype.h>
  11. #include <mach/da8xx.h>
  12. #include <linux/platform_data/usb-davinci.h>
  13. #define DAVINCI_USB_OTG_BASE 0x01c64000
  14. #define DA8XX_USB0_BASE 0x01e00000
  15. #define DA8XX_USB1_BASE 0x01e25000
  16. #if IS_ENABLED(CONFIG_USB_MUSB_HDRC)
  17. static struct musb_hdrc_eps_bits musb_eps[] = {
  18. { "ep1_tx", 8, },
  19. { "ep1_rx", 8, },
  20. { "ep2_tx", 8, },
  21. { "ep2_rx", 8, },
  22. { "ep3_tx", 5, },
  23. { "ep3_rx", 5, },
  24. { "ep4_tx", 5, },
  25. { "ep4_rx", 5, },
  26. };
  27. static struct musb_hdrc_config musb_config = {
  28. .multipoint = true,
  29. .dyn_fifo = true,
  30. .soft_con = true,
  31. .dma = true,
  32. .num_eps = 5,
  33. .dma_channels = 8,
  34. .ram_bits = 10,
  35. .eps_bits = musb_eps,
  36. };
  37. static struct musb_hdrc_platform_data usb_data = {
  38. /* OTG requires a Mini-AB connector */
  39. .mode = MUSB_OTG,
  40. .clock = "usb",
  41. .config = &musb_config,
  42. };
  43. static struct resource usb_resources[] = {
  44. {
  45. /* physical address */
  46. .start = DAVINCI_USB_OTG_BASE,
  47. .end = DAVINCI_USB_OTG_BASE + 0x5ff,
  48. .flags = IORESOURCE_MEM,
  49. },
  50. {
  51. .start = IRQ_USBINT,
  52. .flags = IORESOURCE_IRQ,
  53. .name = "mc"
  54. },
  55. {
  56. /* placeholder for the dedicated CPPI IRQ */
  57. .flags = IORESOURCE_IRQ,
  58. .name = "dma"
  59. },
  60. };
  61. static u64 usb_dmamask = DMA_BIT_MASK(32);
  62. static struct platform_device usb_dev = {
  63. .name = "musb-davinci",
  64. .id = -1,
  65. .dev = {
  66. .platform_data = &usb_data,
  67. .dma_mask = &usb_dmamask,
  68. .coherent_dma_mask = DMA_BIT_MASK(32),
  69. },
  70. .resource = usb_resources,
  71. .num_resources = ARRAY_SIZE(usb_resources),
  72. };
  73. void __init davinci_setup_usb(unsigned mA, unsigned potpgt_ms)
  74. {
  75. usb_data.power = mA > 510 ? 255 : mA / 2;
  76. usb_data.potpgt = (potpgt_ms + 1) / 2;
  77. if (cpu_is_davinci_dm646x()) {
  78. /* Override the defaults as DM6467 uses different IRQs. */
  79. usb_dev.resource[1].start = IRQ_DM646X_USBINT;
  80. usb_dev.resource[2].start = IRQ_DM646X_USBDMAINT;
  81. } else /* other devices don't have dedicated CPPI IRQ */
  82. usb_dev.num_resources = 2;
  83. platform_device_register(&usb_dev);
  84. }
  85. #ifdef CONFIG_ARCH_DAVINCI_DA8XX
  86. static struct resource da8xx_usb20_resources[] = {
  87. {
  88. .start = DA8XX_USB0_BASE,
  89. .end = DA8XX_USB0_BASE + SZ_64K - 1,
  90. .flags = IORESOURCE_MEM,
  91. },
  92. {
  93. .start = IRQ_DA8XX_USB_INT,
  94. .flags = IORESOURCE_IRQ,
  95. .name = "mc",
  96. },
  97. };
  98. int __init da8xx_register_usb20(unsigned mA, unsigned potpgt)
  99. {
  100. usb_data.clock = "usb20";
  101. usb_data.power = mA > 510 ? 255 : mA / 2;
  102. usb_data.potpgt = (potpgt + 1) / 2;
  103. usb_dev.resource = da8xx_usb20_resources;
  104. usb_dev.num_resources = ARRAY_SIZE(da8xx_usb20_resources);
  105. usb_dev.name = "musb-da8xx";
  106. return platform_device_register(&usb_dev);
  107. }
  108. #endif /* CONFIG_DAVINCI_DA8XX */
  109. #else
  110. void __init davinci_setup_usb(unsigned mA, unsigned potpgt_ms)
  111. {
  112. }
  113. #ifdef CONFIG_ARCH_DAVINCI_DA8XX
  114. int __init da8xx_register_usb20(unsigned mA, unsigned potpgt)
  115. {
  116. return 0;
  117. }
  118. #endif
  119. #endif /* CONFIG_USB_MUSB_HDRC */
  120. #ifdef CONFIG_ARCH_DAVINCI_DA8XX
  121. static struct resource da8xx_usb11_resources[] = {
  122. [0] = {
  123. .start = DA8XX_USB1_BASE,
  124. .end = DA8XX_USB1_BASE + SZ_4K - 1,
  125. .flags = IORESOURCE_MEM,
  126. },
  127. [1] = {
  128. .start = IRQ_DA8XX_IRQN,
  129. .end = IRQ_DA8XX_IRQN,
  130. .flags = IORESOURCE_IRQ,
  131. },
  132. };
  133. static u64 da8xx_usb11_dma_mask = DMA_BIT_MASK(32);
  134. static struct platform_device da8xx_usb11_device = {
  135. .name = "ohci",
  136. .id = 0,
  137. .dev = {
  138. .dma_mask = &da8xx_usb11_dma_mask,
  139. .coherent_dma_mask = DMA_BIT_MASK(32),
  140. },
  141. .num_resources = ARRAY_SIZE(da8xx_usb11_resources),
  142. .resource = da8xx_usb11_resources,
  143. };
  144. int __init da8xx_register_usb11(struct da8xx_ohci_root_hub *pdata)
  145. {
  146. da8xx_usb11_device.dev.platform_data = pdata;
  147. return platform_device_register(&da8xx_usb11_device);
  148. }
  149. #endif /* CONFIG_DAVINCI_DA8XX */