arch/mips/alchemy/common/platform.c

   1 /*
   2  * Platform device support for Au1x00 SoCs.
   3  *
   4  * Copyright 2004, Matt Porter <mporter@kernel.crashing.org>
   5  *
   6  * (C) Copyright Embedded Alley Solutions, Inc 2005
   7  * Author: Pantelis Antoniou <pantelis@embeddedalley.com>
   8  *
   9  * This file is licensed under the terms of the GNU General Public
  10  * License version 2.  This program is licensed "as is" without any
  11  * warranty of any kind, whether express or implied.
  12  */
  13
  14 #include <linux/clk.h>
  15 #include <linux/dma-mapping.h>
  16 #include <linux/etherdevice.h>
  17 #include <linux/init.h>
  18 #include <linux/platform_device.h>
  19 #include <linux/serial_8250.h>
  20 #include <linux/slab.h>
  21 #include <linux/usb/ehci_pdriver.h>
  22 #include <linux/usb/ohci_pdriver.h>
  23
  24 #include <asm/mach-au1x00/au1000.h>
  25 #include <asm/mach-au1x00/au1xxx_dbdma.h>
  26 #include <asm/mach-au1x00/au1100_mmc.h>
  27 #include <asm/mach-au1x00/au1xxx_eth.h>
  28
  29 #include <prom.h>
  30
  31 static void alchemy_8250_pm(struct uart_port *port, unsigned int state,
  32                             unsigned int old_state)
  33 {
  34 #ifdef CONFIG_SERIAL_8250
  35         switch (state) {
  36         case 0:
  37                 alchemy_uart_enable(CPHYSADDR(port->membase));
  38                 serial8250_do_pm(port, state, old_state);
  39                 break;
  40         case 3:         /* power off */
  41                 serial8250_do_pm(port, state, old_state);
  42                 alchemy_uart_disable(CPHYSADDR(port->membase));
  43                 break;
  44         default:
  45                 serial8250_do_pm(port, state, old_state);
  46                 break;
  47         }
  48 #endif
  49 }
  50
  51 #define PORT(_base, _irq)                                       \
  52         {                                                       \
  53                 .mapbase        = _base,                        \
  54                 .irq            = _irq,                         \
  55                 .regshift       = 2,                            \
  56                 .iotype         = UPIO_AU,                      \
  57                 .flags          = UPF_SKIP_TEST | UPF_IOREMAP | \
  58                                   UPF_FIXED_TYPE,               \
  59                 .type           = PORT_16550A,                  \
  60                 .pm             = alchemy_8250_pm,              \
  61         }
  62
  63 static struct plat_serial8250_port au1x00_uart_data[][4] __initdata = {
  64         [ALCHEMY_CPU_AU1000] = {
  65                 PORT(AU1000_UART0_PHYS_ADDR, AU1000_UART0_INT),
  66                 PORT(AU1000_UART1_PHYS_ADDR, AU1000_UART1_INT),
  67                 PORT(AU1000_UART2_PHYS_ADDR, AU1000_UART2_INT),
  68                 PORT(AU1000_UART3_PHYS_ADDR, AU1000_UART3_INT),
  69         },
  70         [ALCHEMY_CPU_AU1500] = {
  71                 PORT(AU1000_UART0_PHYS_ADDR, AU1500_UART0_INT),
  72                 PORT(AU1000_UART3_PHYS_ADDR, AU1500_UART3_INT),
  73         },
  74         [ALCHEMY_CPU_AU1100] = {
  75                 PORT(AU1000_UART0_PHYS_ADDR, AU1100_UART0_INT),
  76                 PORT(AU1000_UART1_PHYS_ADDR, AU1100_UART1_INT),
  77                 PORT(AU1000_UART3_PHYS_ADDR, AU1100_UART3_INT),
  78         },
  79         [ALCHEMY_CPU_AU1550] = {
  80                 PORT(AU1000_UART0_PHYS_ADDR, AU1550_UART0_INT),
  81                 PORT(AU1000_UART1_PHYS_ADDR, AU1550_UART1_INT),
  82                 PORT(AU1000_UART3_PHYS_ADDR, AU1550_UART3_INT),
  83         },
  84         [ALCHEMY_CPU_AU1200] = {
  85                 PORT(AU1000_UART0_PHYS_ADDR, AU1200_UART0_INT),
  86                 PORT(AU1000_UART1_PHYS_ADDR, AU1200_UART1_INT),
  87         },
  88         [ALCHEMY_CPU_AU1300] = {
  89                 PORT(AU1300_UART0_PHYS_ADDR, AU1300_UART0_INT),
  90                 PORT(AU1300_UART1_PHYS_ADDR, AU1300_UART1_INT),
  91                 PORT(AU1300_UART2_PHYS_ADDR, AU1300_UART2_INT),
  92                 PORT(AU1300_UART3_PHYS_ADDR, AU1300_UART3_INT),
  93         },
  94 };
  95
  96 static struct platform_device au1xx0_uart_device = {
  97         .name                   = "serial8250",
  98         .id                     = PLAT8250_DEV_AU1X00,
  99 };
 100
 101 static void __init alchemy_setup_uarts(int ctype)
 102 {
 103         long uartclk;
 104         int s = sizeof(struct plat_serial8250_port);
 105         int c = alchemy_get_uarts(ctype);
 106         struct plat_serial8250_port *ports;
 107         struct clk *clk = clk_get(NULL, ALCHEMY_PERIPH_CLK);
 108
 109         if (IS_ERR(clk))
 110                 return;
 111         if (clk_prepare_enable(clk)) {
 112                 clk_put(clk);
 113                 return;
 114         }
 115         uartclk = clk_get_rate(clk);
 116         clk_put(clk);
 117
 118         ports = kcalloc(s, (c + 1), GFP_KERNEL);
 119         if (!ports) {
 120                 printk(KERN_INFO "Alchemy: no memory for UART data\n");
 121                 return;
 122         }
 123         memcpy(ports, au1x00_uart_data[ctype], s * c);
 124         au1xx0_uart_device.dev.platform_data = ports;
 125
 126         /* Fill up uartclk. */
 127         for (s = 0; s < c; s++)
 128                 ports[s].uartclk = uartclk;
 129         if (platform_device_register(&au1xx0_uart_device))
 130                 printk(KERN_INFO "Alchemy: failed to register UARTs\n");
 131 }
 132
 133
 134 static u64 alchemy_all_dmamask = DMA_BIT_MASK(32);
 135
 136 /* Power on callback for the ehci platform driver */
 137 static int alchemy_ehci_power_on(struct platform_device *pdev)
 138 {
 139         return alchemy_usb_control(ALCHEMY_USB_EHCI0, 1);
 140 }
 141
 142 /* Power off/suspend callback for the ehci platform driver */
 143 static void alchemy_ehci_power_off(struct platform_device *pdev)
 144 {
 145         alchemy_usb_control(ALCHEMY_USB_EHCI0, 0);
 146 }
 147
 148 static struct usb_ehci_pdata alchemy_ehci_pdata = {
 149         .no_io_watchdog = 1,
 150         .power_on       = alchemy_ehci_power_on,
 151         .power_off      = alchemy_ehci_power_off,
 152         .power_suspend  = alchemy_ehci_power_off,
 153 };
 154
 155 /* Power on callback for the ohci platform driver */
 156 static int alchemy_ohci_power_on(struct platform_device *pdev)
 157 {
 158         int unit;
 159
 160         unit = (pdev->id == 1) ?
 161                 ALCHEMY_USB_OHCI1 : ALCHEMY_USB_OHCI0;
 162
 163         return alchemy_usb_control(unit, 1);
 164 }
 165
 166 /* Power off/suspend callback for the ohci platform driver */
 167 static void alchemy_ohci_power_off(struct platform_device *pdev)
 168 {
 169         int unit;
 170
 171         unit = (pdev->id == 1) ?
 172                 ALCHEMY_USB_OHCI1 : ALCHEMY_USB_OHCI0;
 173
 174         alchemy_usb_control(unit, 0);
 175 }
 176
 177 static struct usb_ohci_pdata alchemy_ohci_pdata = {
 178         .power_on               = alchemy_ohci_power_on,
 179         .power_off              = alchemy_ohci_power_off,
 180         .power_suspend          = alchemy_ohci_power_off,
 181 };
 182
 183 static unsigned long alchemy_ohci_data[][2] __initdata = {
 184         [ALCHEMY_CPU_AU1000] = { AU1000_USB_OHCI_PHYS_ADDR, AU1000_USB_HOST_INT },
 185         [ALCHEMY_CPU_AU1500] = { AU1000_USB_OHCI_PHYS_ADDR, AU1500_USB_HOST_INT },
 186         [ALCHEMY_CPU_AU1100] = { AU1000_USB_OHCI_PHYS_ADDR, AU1100_USB_HOST_INT },
 187         [ALCHEMY_CPU_AU1550] = { AU1550_USB_OHCI_PHYS_ADDR, AU1550_USB_HOST_INT },
 188         [ALCHEMY_CPU_AU1200] = { AU1200_USB_OHCI_PHYS_ADDR, AU1200_USB_INT },
 189         [ALCHEMY_CPU_AU1300] = { AU1300_USB_OHCI0_PHYS_ADDR, AU1300_USB_INT },
 190 };
 191
 192 static unsigned long alchemy_ehci_data[][2] __initdata = {
 193         [ALCHEMY_CPU_AU1200] = { AU1200_USB_EHCI_PHYS_ADDR, AU1200_USB_INT },
 194         [ALCHEMY_CPU_AU1300] = { AU1300_USB_EHCI_PHYS_ADDR, AU1300_USB_INT },
 195 };
 196
 197 static int __init _new_usbres(struct resource **r, struct platform_device **d)
 198 {
 199         *r = kcalloc(2, sizeof(struct resource), GFP_KERNEL);
 200         if (!*r)
 201                 return -ENOMEM;
 202         *d = kzalloc(sizeof(struct platform_device), GFP_KERNEL);
 203         if (!*d) {
 204                 kfree(*r);
 205                 return -ENOMEM;
 206         }
 207
 208         (*d)->dev.coherent_dma_mask = DMA_BIT_MASK(32);
 209         (*d)->num_resources = 2;
 210         (*d)->resource = *r;
 211
 212         return 0;
 213 }
 214
 215 static void __init alchemy_setup_usb(int ctype)
 216 {
 217         struct resource *res;
 218         struct platform_device *pdev;
 219
 220         /* setup OHCI0.  Every variant has one */
 221         if (_new_usbres(&res, &pdev))
 222                 return;
 223
 224         res[0].start = alchemy_ohci_data[ctype][0];
 225         res[0].end = res[0].start + 0x100 - 1;
 226         res[0].flags = IORESOURCE_MEM;
 227         res[1].start = alchemy_ohci_data[ctype][1];
 228         res[1].end = res[1].start;
 229         res[1].flags = IORESOURCE_IRQ;
 230         pdev->name = "ohci-platform";
 231         pdev->id = 0;
 232         pdev->dev.dma_mask = &alchemy_all_dmamask;
 233         pdev->dev.platform_data = &alchemy_ohci_pdata;
 234
 235         if (platform_device_register(pdev))
 236                 printk(KERN_INFO "Alchemy USB: cannot add OHCI0\n");
 237
 238
 239         /* setup EHCI0: Au1200/Au1300 */
 240         if ((ctype == ALCHEMY_CPU_AU1200) || (ctype == ALCHEMY_CPU_AU1300)) {
 241                 if (_new_usbres(&res, &pdev))
 242                         return;
 243
 244                 res[0].start = alchemy_ehci_data[ctype][0];
 245                 res[0].end = res[0].start + 0x100 - 1;
 246                 res[0].flags = IORESOURCE_MEM;
 247                 res[1].start = alchemy_ehci_data[ctype][1];
 248                 res[1].end = res[1].start;
 249                 res[1].flags = IORESOURCE_IRQ;
 250                 pdev->name = "ehci-platform";
 251                 pdev->id = 0;
 252                 pdev->dev.dma_mask = &alchemy_all_dmamask;
 253                 pdev->dev.platform_data = &alchemy_ehci_pdata;
 254
 255                 if (platform_device_register(pdev))
 256                         printk(KERN_INFO "Alchemy USB: cannot add EHCI0\n");
 257         }
 258
 259         /* Au1300: OHCI1 */
 260         if (ctype == ALCHEMY_CPU_AU1300) {
 261                 if (_new_usbres(&res, &pdev))
 262                         return;
 263
 264                 res[0].start = AU1300_USB_OHCI1_PHYS_ADDR;
 265                 res[0].end = res[0].start + 0x100 - 1;
 266                 res[0].flags = IORESOURCE_MEM;
 267                 res[1].start = AU1300_USB_INT;
 268                 res[1].end = res[1].start;
 269                 res[1].flags = IORESOURCE_IRQ;
 270                 pdev->name = "ohci-platform";
 271                 pdev->id = 1;
 272                 pdev->dev.dma_mask = &alchemy_all_dmamask;
 273                 pdev->dev.platform_data = &alchemy_ohci_pdata;
 274
 275                 if (platform_device_register(pdev))
 276                         printk(KERN_INFO "Alchemy USB: cannot add OHCI1\n");
 277         }
 278 }
 279
 280 /* Macro to help defining the Ethernet MAC resources */
 281 #define MAC_RES_COUNT   4       /* MAC regs, MAC en, MAC INT, MACDMA regs */
 282 #define MAC_RES(_base, _enable, _irq, _macdma)          \
 283         {                                               \
 284                 .start  = _base,                        \
 285                 .end    = _base + 0xffff,               \
 286                 .flags  = IORESOURCE_MEM,               \
 287         },                                              \
 288         {                                               \
 289                 .start  = _enable,                      \
 290                 .end    = _enable + 0x3,                \
 291                 .flags  = IORESOURCE_MEM,               \
 292         },                                              \
 293         {                                               \
 294                 .start  = _irq,                         \
 295                 .end    = _irq,                         \
 296                 .flags  = IORESOURCE_IRQ                \
 297         },                                              \
 298         {                                               \
 299                 .start  = _macdma,                      \
 300                 .end    = _macdma + 0x1ff,              \
 301                 .flags  = IORESOURCE_MEM,               \
 302         }
 303
 304 static struct resource au1xxx_eth0_resources[][MAC_RES_COUNT] __initdata = {
 305         [ALCHEMY_CPU_AU1000] = {
 306                 MAC_RES(AU1000_MAC0_PHYS_ADDR,
 307                         AU1000_MACEN_PHYS_ADDR,
 308                         AU1000_MAC0_DMA_INT,
 309                         AU1000_MACDMA0_PHYS_ADDR)
 310         },
 311         [ALCHEMY_CPU_AU1500] = {
 312                 MAC_RES(AU1500_MAC0_PHYS_ADDR,
 313                         AU1500_MACEN_PHYS_ADDR,
 314                         AU1500_MAC0_DMA_INT,
 315                         AU1000_MACDMA0_PHYS_ADDR)
 316         },
 317         [ALCHEMY_CPU_AU1100] = {
 318                 MAC_RES(AU1000_MAC0_PHYS_ADDR,
 319                         AU1000_MACEN_PHYS_ADDR,
 320                         AU1100_MAC0_DMA_INT,
 321                         AU1000_MACDMA0_PHYS_ADDR)
 322         },
 323         [ALCHEMY_CPU_AU1550] = {
 324                 MAC_RES(AU1000_MAC0_PHYS_ADDR,
 325                         AU1000_MACEN_PHYS_ADDR,
 326                         AU1550_MAC0_DMA_INT,
 327                         AU1000_MACDMA0_PHYS_ADDR)
 328         },
 329 };
 330
 331 static struct au1000_eth_platform_data au1xxx_eth0_platform_data = {
 332         .phy1_search_mac0 = 1,
 333 };
 334
 335 static struct platform_device au1xxx_eth0_device = {
 336         .name           = "au1000-eth",
 337         .id             = 0,
 338         .num_resources  = MAC_RES_COUNT,
 339         .dev = {
 340                 .dma_mask               = &alchemy_all_dmamask,
 341                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 342                 .platform_data          = &au1xxx_eth0_platform_data,
 343         },
 344 };
 345
 346 static struct resource au1xxx_eth1_resources[][MAC_RES_COUNT] __initdata = {
 347         [ALCHEMY_CPU_AU1000] = {
 348                 MAC_RES(AU1000_MAC1_PHYS_ADDR,
 349                         AU1000_MACEN_PHYS_ADDR + 4,
 350                         AU1000_MAC1_DMA_INT,
 351                         AU1000_MACDMA1_PHYS_ADDR)
 352         },
 353         [ALCHEMY_CPU_AU1500] = {
 354                 MAC_RES(AU1500_MAC1_PHYS_ADDR,
 355                         AU1500_MACEN_PHYS_ADDR + 4,
 356                         AU1500_MAC1_DMA_INT,
 357                         AU1000_MACDMA1_PHYS_ADDR)
 358         },
 359         [ALCHEMY_CPU_AU1550] = {
 360                 MAC_RES(AU1000_MAC1_PHYS_ADDR,
 361                         AU1000_MACEN_PHYS_ADDR + 4,
 362                         AU1550_MAC1_DMA_INT,
 363                         AU1000_MACDMA1_PHYS_ADDR)
 364         },
 365 };
 366
 367 static struct au1000_eth_platform_data au1xxx_eth1_platform_data = {
 368         .phy1_search_mac0 = 1,
 369 };
 370
 371 static struct platform_device au1xxx_eth1_device = {
 372         .name           = "au1000-eth",
 373         .id             = 1,
 374         .num_resources  = MAC_RES_COUNT,
 375         .dev = {
 376                 .dma_mask               = &alchemy_all_dmamask,
 377                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 378                 .platform_data          = &au1xxx_eth1_platform_data,
 379         },
 380 };
 381
 382 void __init au1xxx_override_eth_cfg(unsigned int port,
 383                         struct au1000_eth_platform_data *eth_data)
 384 {
 385         if (!eth_data || port > 1)
 386                 return;
 387
 388         if (port == 0)
 389                 memcpy(&au1xxx_eth0_platform_data, eth_data,
 390                         sizeof(struct au1000_eth_platform_data));
 391         else
 392                 memcpy(&au1xxx_eth1_platform_data, eth_data,
 393                         sizeof(struct au1000_eth_platform_data));
 394 }
 395
 396 static void __init alchemy_setup_macs(int ctype)
 397 {
 398         int ret, i;
 399         unsigned char ethaddr[6];
 400         struct resource *macres;
 401
 402         /* Handle 1st MAC */
 403         if (alchemy_get_macs(ctype) < 1)
 404                 return;
 405
 406         macres = kmemdup(au1xxx_eth0_resources[ctype],
 407                          sizeof(struct resource) * MAC_RES_COUNT, GFP_KERNEL);
 408         if (!macres) {
 409                 printk(KERN_INFO "Alchemy: no memory for MAC0 resources\n");
 410                 return;
 411         }
 412         au1xxx_eth0_device.resource = macres;
 413
 414         i = prom_get_ethernet_addr(ethaddr);
 415         if (!i && !is_valid_ether_addr(au1xxx_eth0_platform_data.mac))
 416                 memcpy(au1xxx_eth0_platform_data.mac, ethaddr, 6);
 417
 418         ret = platform_device_register(&au1xxx_eth0_device);
 419         if (ret)
 420                 printk(KERN_INFO "Alchemy: failed to register MAC0\n");
 421
 422
 423         /* Handle 2nd MAC */
 424         if (alchemy_get_macs(ctype) < 2)
 425                 return;
 426
 427         macres = kmemdup(au1xxx_eth1_resources[ctype],
 428                          sizeof(struct resource) * MAC_RES_COUNT, GFP_KERNEL);
 429         if (!macres) {
 430                 printk(KERN_INFO "Alchemy: no memory for MAC1 resources\n");
 431                 return;
 432         }
 433         au1xxx_eth1_device.resource = macres;
 434
 435         ethaddr[5] += 1;        /* next addr for 2nd MAC */
 436         if (!i && !is_valid_ether_addr(au1xxx_eth1_platform_data.mac))
 437                 memcpy(au1xxx_eth1_platform_data.mac, ethaddr, 6);
 438
 439         /* Register second MAC if enabled in pinfunc */
 440         if (!(alchemy_rdsys(AU1000_SYS_PINFUNC) & SYS_PF_NI2)) {
 441                 ret = platform_device_register(&au1xxx_eth1_device);
 442                 if (ret)
 443                         printk(KERN_INFO "Alchemy: failed to register MAC1\n");
 444         }
 445 }
 446
 447 static int __init au1xxx_platform_init(void)
 448 {
 449         int ctype = alchemy_get_cputype();
 450
 451         alchemy_setup_uarts(ctype);
 452         alchemy_setup_macs(ctype);
 453         alchemy_setup_usb(ctype);
 454
 455         return 0;
 456 }
 457
 458 arch_initcall(au1xxx_platform_init);