arch/arm/mach-davinci/usb-da8xx.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * DA8xx USB
   4  */
   5 #include <linux/clk-provider.h>
   6 #include <linux/delay.h>
   7 #include <linux/dma-mapping.h>
   8 #include <linux/init.h>
   9 #include <linux/mfd/da8xx-cfgchip.h>
  10 #include <linux/mfd/syscon.h>
  11 #include <linux/phy/phy.h>
  12 #include <linux/platform_data/clk-da8xx-cfgchip.h>
  13 #include <linux/platform_data/phy-da8xx-usb.h>
  14 #include <linux/platform_data/usb-davinci.h>
  15 #include <linux/platform_device.h>
  16 #include <linux/usb/musb.h>
  17
  18 #include <mach/common.h>
  19 #include <mach/cputype.h>
  20 #include <mach/da8xx.h>
  21
  22 #include "irqs.h"
  23
  24 #define DA8XX_USB0_BASE         0x01e00000
  25 #define DA8XX_USB1_BASE         0x01e25000
  26
  27 #ifndef CONFIG_COMMON_CLK
  28 static struct clk *usb20_clk;
  29 #endif
  30
  31 static struct da8xx_usb_phy_platform_data da8xx_usb_phy_pdata;
  32
  33 static struct platform_device da8xx_usb_phy = {
  34         .name           = "da8xx-usb-phy",
  35         .id             = -1,
  36         .dev            = {
  37                 /*
  38                  * Setting init_name so that clock lookup will work in
  39                  * da8xx_register_usb11_phy_clk() even if this device is not
  40                  * registered yet.
  41                  */
  42                 .init_name      = "da8xx-usb-phy",
  43                 .platform_data  = &da8xx_usb_phy_pdata,
  44         },
  45 };
  46
  47 int __init da8xx_register_usb_phy(void)
  48 {
  49         da8xx_usb_phy_pdata.cfgchip = da8xx_get_cfgchip();
  50
  51         return platform_device_register(&da8xx_usb_phy);
  52 }
  53
  54 static struct musb_hdrc_config musb_config = {
  55         .multipoint     = true,
  56         .num_eps        = 5,
  57         .ram_bits       = 10,
  58 };
  59
  60 static struct musb_hdrc_platform_data usb_data = {
  61         /* OTG requires a Mini-AB connector */
  62         .mode           = MUSB_OTG,
  63         .clock          = "usb20",
  64         .config         = &musb_config,
  65 };
  66
  67 static struct resource da8xx_usb20_resources[] = {
  68         {
  69                 .start          = DA8XX_USB0_BASE,
  70                 .end            = DA8XX_USB0_BASE + SZ_64K - 1,
  71                 .flags          = IORESOURCE_MEM,
  72         },
  73         {
  74                 .start          = DAVINCI_INTC_IRQ(IRQ_DA8XX_USB_INT),
  75                 .flags          = IORESOURCE_IRQ,
  76                 .name           = "mc",
  77         },
  78 };
  79
  80 static u64 usb_dmamask = DMA_BIT_MASK(32);
  81
  82 static struct platform_device da8xx_usb20_dev = {
  83         .name           = "musb-da8xx",
  84         .id             = -1,
  85         .dev = {
  86                 .platform_data          = &usb_data,
  87                 .dma_mask               = &usb_dmamask,
  88                 .coherent_dma_mask      = DMA_BIT_MASK(32),
  89         },
  90         .resource       = da8xx_usb20_resources,
  91         .num_resources  = ARRAY_SIZE(da8xx_usb20_resources),
  92 };
  93
  94 int __init da8xx_register_usb20(unsigned int mA, unsigned int potpgt)
  95 {
  96         usb_data.power  = mA > 510 ? 255 : mA / 2;
  97         usb_data.potpgt = (potpgt + 1) / 2;
  98
  99         return platform_device_register(&da8xx_usb20_dev);
 100 }
 101
 102 static struct resource da8xx_usb11_resources[] = {
 103         [0] = {
 104                 .start  = DA8XX_USB1_BASE,
 105                 .end    = DA8XX_USB1_BASE + SZ_4K - 1,
 106                 .flags  = IORESOURCE_MEM,
 107         },
 108         [1] = {
 109                 .start  = DAVINCI_INTC_IRQ(IRQ_DA8XX_IRQN),
 110                 .end    = DAVINCI_INTC_IRQ(IRQ_DA8XX_IRQN),
 111                 .flags  = IORESOURCE_IRQ,
 112         },
 113 };
 114
 115 static u64 da8xx_usb11_dma_mask = DMA_BIT_MASK(32);
 116
 117 static struct platform_device da8xx_usb11_device = {
 118         .name           = "ohci-da8xx",
 119         .id             = -1,
 120         .dev = {
 121                 .dma_mask               = &da8xx_usb11_dma_mask,
 122                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 123         },
 124         .num_resources  = ARRAY_SIZE(da8xx_usb11_resources),
 125         .resource       = da8xx_usb11_resources,
 126 };
 127
 128 int __init da8xx_register_usb11(struct da8xx_ohci_root_hub *pdata)
 129 {
 130         da8xx_usb11_device.dev.platform_data = pdata;
 131         return platform_device_register(&da8xx_usb11_device);
 132 }
 133
 134 static struct platform_device da8xx_usb_phy_clks_device = {
 135         .name           = "da830-usb-phy-clks",
 136         .id             = -1,
 137 };
 138
 139 int __init da8xx_register_usb_phy_clocks(void)
 140 {
 141         struct da8xx_cfgchip_clk_platform_data pdata;
 142
 143         pdata.cfgchip = da8xx_get_cfgchip();
 144         da8xx_usb_phy_clks_device.dev.platform_data = &pdata;
 145
 146         return platform_device_register(&da8xx_usb_phy_clks_device);
 147 }