target/linux/ar71xx/files/arch/mips/ar71xx/platform.c

   1 /*
   2  *  Atheros AR71xx SoC platform devices
   3  *
   4  *  Copyright (C) 2008 Gabor Juhos <juhosg@openwrt.org>
   5  *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
   6  *
   7  *  Parts of this file are based on Atheros' 2.6.15 BSP
   8  *
   9  *  This program is free software; you can redistribute it and/or modify it
  10  *  under the terms of the GNU General Public License version 2 as published
  11  *  by the Free Software Foundation.
  12  */
  13
  14 #include <linux/kernel.h>
  15 #include <linux/init.h>
  16 #include <linux/delay.h>
  17 #include <linux/dma-mapping.h>
  18 #include <linux/platform_device.h>
  19 #include <linux/serial_8250.h>
  20
  21 #include <asm/mips_machine.h>
  22 #include <asm/mach-ar71xx/ar71xx.h>
  23 #include <asm/mach-ar71xx/platform.h>
  24
  25 static u8 ar71xx_mac_base[ETH_ALEN] __initdata;
  26
  27 /*
  28  * OHCI (USB full speed host controller)
  29  */
  30 static struct resource ar71xx_usb_ohci_resources[] = {
  31         [0] = {
  32                 .start  = AR71XX_OHCI_BASE,
  33                 .end    = AR71XX_OHCI_BASE + AR71XX_OHCI_SIZE - 1,
  34                 .flags  = IORESOURCE_MEM,
  35         },
  36         [1] = {
  37                 .start  = AR71XX_MISC_IRQ_OHCI,
  38                 .end    = AR71XX_MISC_IRQ_OHCI,
  39                 .flags  = IORESOURCE_IRQ,
  40         },
  41 };
  42
  43 static u64 ar71xx_ohci_dmamask = DMA_BIT_MASK(32);
  44 static struct platform_device ar71xx_usb_ohci_device = {
  45         .name           = "ar71xx-ohci",
  46         .id             = 0,
  47         .resource       = ar71xx_usb_ohci_resources,
  48         .num_resources  = ARRAY_SIZE(ar71xx_usb_ohci_resources),
  49         .dev = {
  50                 .dma_mask               = &ar71xx_ohci_dmamask,
  51                 .coherent_dma_mask      = DMA_BIT_MASK(32),
  52         },
  53 };
  54
  55 /*
  56  * EHCI (USB full speed host controller)
  57  */
  58 static struct resource ar71xx_usb_ehci_resources[] = {
  59         [0] = {
  60                 .start  = AR71XX_EHCI_BASE,
  61                 .end    = AR71XX_EHCI_BASE + AR71XX_EHCI_SIZE - 1,
  62                 .flags  = IORESOURCE_MEM,
  63         },
  64         [1] = {
  65                 .start  = AR71XX_CPU_IRQ_USB,
  66                 .end    = AR71XX_CPU_IRQ_USB,
  67                 .flags  = IORESOURCE_IRQ,
  68         },
  69 };
  70
  71 static u64 ar71xx_ehci_dmamask = DMA_BIT_MASK(32);
  72 static struct platform_device ar71xx_usb_ehci_device = {
  73         .name           = "ar71xx-ehci",
  74         .id             = 0,
  75         .resource       = ar71xx_usb_ehci_resources,
  76         .num_resources  = ARRAY_SIZE(ar71xx_usb_ehci_resources),
  77         .dev = {
  78                 .dma_mask               = &ar71xx_ehci_dmamask,
  79                 .coherent_dma_mask      = DMA_BIT_MASK(32),
  80         },
  81 };
  82
  83 #define AR71XX_USB_RESET_MASK \
  84         (RESET_MODULE_USB_HOST | RESET_MODULE_USB_PHY \
  85         | RESET_MODULE_USB_OHCI_DLL)
  86
  87 void __init ar71xx_add_device_usb(void)
  88 {
  89         ar71xx_device_stop(AR71XX_USB_RESET_MASK);
  90         mdelay(1000);
  91         ar71xx_device_start(AR71XX_USB_RESET_MASK);
  92
  93         /* Turning on the Buff and Desc swap bits */
  94         ar71xx_usb_ctrl_wr(USB_CTRL_REG_CONFIG, 0xf0000);
  95
  96         /* WAR for HW bug. Here it adjusts the duration between two SOFS */
  97         ar71xx_usb_ctrl_wr(USB_CTRL_REG_FLADJ, 0x20c00);
  98
  99         mdelay(900);
 100
 101         platform_device_register(&ar71xx_usb_ohci_device);
 102         platform_device_register(&ar71xx_usb_ehci_device);
 103 }
 104
 105 #ifdef CONFIG_AR71XX_EARLY_SERIAL
 106 static void __init ar71xx_add_device_uart(void) {};
 107 #else
 108 static struct resource ar71xx_uart_resources[] = {
 109         {
 110                 .start  = AR71XX_UART_BASE,
 111                 .end    = AR71XX_UART_BASE + AR71XX_UART_SIZE - 1,
 112                 .flags  = IORESOURCE_MEM,
 113         },
 114 };
 115
 116 #define AR71XX_UART_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP)
 117 static struct plat_serial8250_port ar71xx_uart_data[] = {
 118         {
 119                 .mapbase        = AR71XX_UART_BASE,
 120                 .irq            = AR71XX_MISC_IRQ_UART,
 121                 .flags          = AR71XX_UART_FLAGS,
 122                 .iotype         = UPIO_MEM32,
 123                 .regshift       = 2,
 124         }, {
 125                 /* terminating entry */
 126         }
 127 };
 128
 129 static struct platform_device ar71xx_uart_device = {
 130         .name           = "serial8250",
 131         .id             = PLAT8250_DEV_PLATFORM,
 132         .resource       = ar71xx_uart_resources,
 133         .num_resources  = ARRAY_SIZE(ar71xx_uart_resources),
 134         .dev = {
 135                 .platform_data  = ar71xx_uart_data
 136         },
 137 };
 138
 139 static void __init ar71xx_add_device_uart(void)
 140 {
 141         ar71xx_uart_data[0].uartclk = ar71xx_ahb_freq;
 142         platform_device_register(&ar71xx_uart_device);
 143 }
 144 #endif /* CONFIG_AR71XX_EARLY_SERIAL */
 145
 146 static struct resource ar71xx_eth0_resources[] = {
 147         {
 148                 .name   = "mac_base",
 149                 .flags  = IORESOURCE_MEM,
 150                 .start  = AR71XX_GE0_BASE,
 151                 .end    = AR71XX_GE0_BASE + AR71XX_GE0_SIZE - 1,
 152         }, {
 153                 .name   = "mii_ctrl",
 154                 .flags  = IORESOURCE_MEM,
 155                 .start  = AR71XX_MII_BASE + MII_REG_MII0_CTRL,
 156                 .end    = AR71XX_MII_BASE + MII_REG_MII0_CTRL + 3,
 157         }, {
 158                 .name   = "mac_irq",
 159                 .flags  = IORESOURCE_IRQ,
 160                 .start  = AR71XX_CPU_IRQ_GE0,
 161                 .end    = AR71XX_CPU_IRQ_GE0,
 162         },
 163 };
 164
 165 static struct ag71xx_platform_data ar71xx_eth0_data = {
 166         .reset_bit      = RESET_MODULE_GE0_MAC,
 167         .flush_reg      = DDR_REG_FLUSH_GE0,
 168 };
 169
 170 static struct platform_device ar71xx_eth0_device = {
 171         .name           = "ag71xx",
 172         .id             = 0,
 173         .resource       = ar71xx_eth0_resources,
 174         .num_resources  = ARRAY_SIZE(ar71xx_eth0_resources),
 175         .dev = {
 176                 .platform_data = &ar71xx_eth0_data,
 177         },
 178 };
 179
 180 static struct resource ar71xx_eth1_resources[] = {
 181         {
 182                 .name   = "mac_base",
 183                 .flags  = IORESOURCE_MEM,
 184                 .start  = AR71XX_GE1_BASE,
 185                 .end    = AR71XX_GE1_BASE + AR71XX_GE1_SIZE - 1,
 186         }, {
 187                 .name   = "mii_ctrl",
 188                 .flags  = IORESOURCE_MEM,
 189                 .start  = AR71XX_MII_BASE + MII_REG_MII1_CTRL,
 190                 .end    = AR71XX_MII_BASE + MII_REG_MII1_CTRL + 3,
 191         }, {
 192                 .name   = "mac_irq",
 193                 .flags  = IORESOURCE_IRQ,
 194                 .start  = AR71XX_CPU_IRQ_GE1,
 195                 .end    = AR71XX_CPU_IRQ_GE1,
 196         },
 197 };
 198
 199 static struct ag71xx_platform_data ar71xx_eth1_data = {
 200         .reset_bit      = RESET_MODULE_GE1_MAC,
 201         .flush_reg      = DDR_REG_FLUSH_GE1,
 202 };
 203
 204 static struct platform_device ar71xx_eth1_device = {
 205         .name           = "ag71xx",
 206         .id             = 1,
 207         .resource       = ar71xx_eth1_resources,
 208         .num_resources  = ARRAY_SIZE(ar71xx_eth1_resources),
 209         .dev = {
 210                 .platform_data = &ar71xx_eth1_data,
 211         },
 212 };
 213
 214 void __init ar71xx_add_device_eth(unsigned int id, phy_interface_t phy_if_mode,
 215                                 u32 phy_mask)
 216 {
 217         struct platform_device *pdev;
 218
 219         switch (id) {
 220         case 0:
 221                 switch (phy_if_mode) {
 222                 case PHY_INTERFACE_MODE_MII:
 223                         ar71xx_eth0_data.mii_if = MII0_CTRL_IF_MII;
 224                         break;
 225                 case PHY_INTERFACE_MODE_GMII:
 226                         ar71xx_eth0_data.mii_if = MII0_CTRL_IF_GMII;
 227                         break;
 228                 case PHY_INTERFACE_MODE_RGMII:
 229                         ar71xx_eth0_data.mii_if = MII0_CTRL_IF_RGMII;
 230                         break;
 231                 case PHY_INTERFACE_MODE_RMII:
 232                         ar71xx_eth0_data.mii_if = MII0_CTRL_IF_RMII;
 233                         break;
 234                 default:
 235                         BUG();
 236                 }
 237                 memcpy(ar71xx_eth0_data.mac_addr, ar71xx_mac_base, ETH_ALEN);
 238                 ar71xx_eth0_data.phy_if_mode = phy_if_mode;
 239                 ar71xx_eth0_data.phy_mask = phy_mask;
 240                 pdev = &ar71xx_eth0_device;
 241                 break;
 242         case 1:
 243                 switch (phy_if_mode) {
 244                 case PHY_INTERFACE_MODE_RMII:
 245                         ar71xx_eth1_data.mii_if = MII1_CTRL_IF_RMII;
 246                         break;
 247                 case PHY_INTERFACE_MODE_RGMII:
 248                         ar71xx_eth1_data.mii_if = MII1_CTRL_IF_RGMII;
 249                         break;
 250                 default:
 251                         BUG();
 252                 }
 253                 memcpy(ar71xx_eth1_data.mac_addr, ar71xx_mac_base, ETH_ALEN);
 254                 ar71xx_eth1_data.mac_addr[5] += id;
 255                 ar71xx_eth1_data.phy_if_mode = phy_if_mode;
 256                 ar71xx_eth1_data.phy_mask = phy_mask;
 257                 pdev = &ar71xx_eth1_device;
 258                 break;
 259         default:
 260                 pdev = NULL;
 261                 break;
 262         }
 263
 264         if (pdev)
 265                 platform_device_register(pdev);
 266 }
 267
 268 static struct resource ar71xx_spi_resources[] = {
 269         [0] = {
 270                 .start  = AR71XX_SPI_BASE,
 271                 .end    = AR71XX_SPI_BASE + AR71XX_SPI_SIZE - 1,
 272                 .flags  = IORESOURCE_MEM,
 273         },
 274 };
 275
 276 static struct platform_device ar71xx_spi_device = {
 277         .name           = "ar71xx-spi",
 278         .id             = -1,
 279         .resource       = ar71xx_spi_resources,
 280         .num_resources  = ARRAY_SIZE(ar71xx_spi_resources),
 281 };
 282
 283 void __init ar71xx_add_device_spi(struct ar71xx_spi_platform_data *pdata,
 284                                 struct spi_board_info const *info,
 285                                 unsigned n)
 286 {
 287         ar71xx_gpio_function_enable(GPIO_FUNC_SPI_EN);
 288
 289         spi_register_board_info(info, n);
 290         ar71xx_spi_device.dev.platform_data = pdata;
 291         platform_device_register(&ar71xx_spi_device);
 292 }
 293
 294 void __init ar71xx_set_mac_base(char *mac_str)
 295 {
 296         u8 tmp[ETH_ALEN];
 297         int t;
 298
 299         t = sscanf(mac_str, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx",
 300                         &tmp[0], &tmp[1], &tmp[2], &tmp[3], &tmp[4], &tmp[5]);
 301
 302         if (t == ETH_ALEN)
 303                 memcpy(ar71xx_mac_base, tmp, ETH_ALEN);
 304         else
 305                 printk(KERN_DEBUG "AR71XX: failed to parse mac address "
 306                                 "\"%s\"\n", mac_str);
 307 }
 308
 309 static int __init ar71xx_machine_setup(void)
 310 {
 311         ar71xx_print_cmdline();
 312
 313         ar71xx_gpio_init();
 314
 315         ar71xx_add_device_uart();
 316
 317         mips_machine_setup();
 318         return 0;
 319 }
 320
 321 arch_initcall(ar71xx_machine_setup);