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 /* The dmamask must be set for OHCI/EHCI to work */
 135 static u64 alchemy_ohci_dmamask = DMA_BIT_MASK(32);
 136 static u64 __maybe_unused alchemy_ehci_dmamask = DMA_BIT_MASK(32);
 137
 138 /* Power on callback for the ehci platform driver */
 139 static int alchemy_ehci_power_on(struct platform_device *pdev)
 140 {
 141         return alchemy_usb_control(ALCHEMY_USB_EHCI0, 1);
 142 }
 143
 144 /* Power off/suspend callback for the ehci platform driver */
 145 static void alchemy_ehci_power_off(struct platform_device *pdev)
 146 {
 147         alchemy_usb_control(ALCHEMY_USB_EHCI0, 0);
 148 }
 149
 150 static struct usb_ehci_pdata alchemy_ehci_pdata = {
 151         .no_io_watchdog = 1,
 152         .power_on       = alchemy_ehci_power_on,
 153         .power_off      = alchemy_ehci_power_off,
 154         .power_suspend  = alchemy_ehci_power_off,
 155 };
 156
 157 /* Power on callback for the ohci platform driver */
 158 static int alchemy_ohci_power_on(struct platform_device *pdev)
 159 {
 160         int unit;
 161
 162         unit = (pdev->id == 1) ?
 163                 ALCHEMY_USB_OHCI1 : ALCHEMY_USB_OHCI0;
 164
 165         return alchemy_usb_control(unit, 1);
 166 }
 167
 168 /* Power off/suspend callback for the ohci platform driver */
 169 static void alchemy_ohci_power_off(struct platform_device *pdev)
 170 {
 171         int unit;
 172
 173         unit = (pdev->id == 1) ?
 174                 ALCHEMY_USB_OHCI1 : ALCHEMY_USB_OHCI0;
 175
 176         alchemy_usb_control(unit, 0);
 177 }
 178
 179 static struct usb_ohci_pdata alchemy_ohci_pdata = {
 180         .power_on               = alchemy_ohci_power_on,
 181         .power_off              = alchemy_ohci_power_off,
 182         .power_suspend          = alchemy_ohci_power_off,
 183 };
 184
 185 static unsigned long alchemy_ohci_data[][2] __initdata = {
 186         [ALCHEMY_CPU_AU1000] = { AU1000_USB_OHCI_PHYS_ADDR, AU1000_USB_HOST_INT },
 187         [ALCHEMY_CPU_AU1500] = { AU1000_USB_OHCI_PHYS_ADDR, AU1500_USB_HOST_INT },
 188         [ALCHEMY_CPU_AU1100] = { AU1000_USB_OHCI_PHYS_ADDR, AU1100_USB_HOST_INT },
 189         [ALCHEMY_CPU_AU1550] = { AU1550_USB_OHCI_PHYS_ADDR, AU1550_USB_HOST_INT },
 190         [ALCHEMY_CPU_AU1200] = { AU1200_USB_OHCI_PHYS_ADDR, AU1200_USB_INT },
 191         [ALCHEMY_CPU_AU1300] = { AU1300_USB_OHCI0_PHYS_ADDR, AU1300_USB_INT },
 192 };
 193
 194 static unsigned long alchemy_ehci_data[][2] __initdata = {
 195         [ALCHEMY_CPU_AU1200] = { AU1200_USB_EHCI_PHYS_ADDR, AU1200_USB_INT },
 196         [ALCHEMY_CPU_AU1300] = { AU1300_USB_EHCI_PHYS_ADDR, AU1300_USB_INT },
 197 };
 198
 199 static int __init _new_usbres(struct resource **r, struct platform_device **d)
 200 {
 201         *r = kcalloc(2, sizeof(struct resource), GFP_KERNEL);
 202         if (!*r)
 203                 return -ENOMEM;
 204         *d = kzalloc(sizeof(struct platform_device), GFP_KERNEL);
 205         if (!*d) {
 206                 kfree(*r);
 207                 return -ENOMEM;
 208         }
 209
 210         (*d)->dev.coherent_dma_mask = DMA_BIT_MASK(32);
 211         (*d)->num_resources = 2;
 212         (*d)->resource = *r;
 213
 214         return 0;
 215 }
 216
 217 static void __init alchemy_setup_usb(int ctype)
 218 {
 219         struct resource *res;
 220         struct platform_device *pdev;
 221
 222         /* setup OHCI0.  Every variant has one */
 223         if (_new_usbres(&res, &pdev))
 224                 return;
 225
 226         res[0].start = alchemy_ohci_data[ctype][0];
 227         res[0].end = res[0].start + 0x100 - 1;
 228         res[0].flags = IORESOURCE_MEM;
 229         res[1].start = alchemy_ohci_data[ctype][1];
 230         res[1].end = res[1].start;
 231         res[1].flags = IORESOURCE_IRQ;
 232         pdev->name = "ohci-platform";
 233         pdev->id = 0;
 234         pdev->dev.dma_mask = &alchemy_ohci_dmamask;
 235         pdev->dev.platform_data = &alchemy_ohci_pdata;
 236
 237         if (platform_device_register(pdev))
 238                 printk(KERN_INFO "Alchemy USB: cannot add OHCI0\n");
 239
 240
 241         /* setup EHCI0: Au1200/Au1300 */
 242         if ((ctype == ALCHEMY_CPU_AU1200) || (ctype == ALCHEMY_CPU_AU1300)) {
 243                 if (_new_usbres(&res, &pdev))
 244                         return;
 245
 246                 res[0].start = alchemy_ehci_data[ctype][0];
 247                 res[0].end = res[0].start + 0x100 - 1;
 248                 res[0].flags = IORESOURCE_MEM;
 249                 res[1].start = alchemy_ehci_data[ctype][1];
 250                 res[1].end = res[1].start;
 251                 res[1].flags = IORESOURCE_IRQ;
 252                 pdev->name = "ehci-platform";
 253                 pdev->id = 0;
 254                 pdev->dev.dma_mask = &alchemy_ehci_dmamask;
 255                 pdev->dev.platform_data = &alchemy_ehci_pdata;
 256
 257                 if (platform_device_register(pdev))
 258                         printk(KERN_INFO "Alchemy USB: cannot add EHCI0\n");
 259         }
 260
 261         /* Au1300: OHCI1 */
 262         if (ctype == ALCHEMY_CPU_AU1300) {
 263                 if (_new_usbres(&res, &pdev))
 264                         return;
 265
 266                 res[0].start = AU1300_USB_OHCI1_PHYS_ADDR;
 267                 res[0].end = res[0].start + 0x100 - 1;
 268                 res[0].flags = IORESOURCE_MEM;
 269                 res[1].start = AU1300_USB_INT;
 270                 res[1].end = res[1].start;
 271                 res[1].flags = IORESOURCE_IRQ;
 272                 pdev->name = "ohci-platform";
 273                 pdev->id = 1;
 274                 pdev->dev.dma_mask = &alchemy_ohci_dmamask;
 275                 pdev->dev.platform_data = &alchemy_ohci_pdata;
 276
 277                 if (platform_device_register(pdev))
 278                         printk(KERN_INFO "Alchemy USB: cannot add OHCI1\n");
 279         }
 280 }
 281
 282 /* Macro to help defining the Ethernet MAC resources */
 283 #define MAC_RES_COUNT   4       /* MAC regs, MAC en, MAC INT, MACDMA regs */
 284 #define MAC_RES(_base, _enable, _irq, _macdma)          \
 285         {                                               \
 286                 .start  = _base,                        \
 287                 .end    = _base + 0xffff,               \
 288                 .flags  = IORESOURCE_MEM,               \
 289         },                                              \
 290         {                                               \
 291                 .start  = _enable,                      \
 292                 .end    = _enable + 0x3,                \
 293                 .flags  = IORESOURCE_MEM,               \
 294         },                                              \
 295         {                                               \
 296                 .start  = _irq,                         \
 297                 .end    = _irq,                         \
 298                 .flags  = IORESOURCE_IRQ                \
 299         },                                              \
 300         {                                               \
 301                 .start  = _macdma,                      \
 302                 .end    = _macdma + 0x1ff,              \
 303                 .flags  = IORESOURCE_MEM,               \
 304         }
 305
 306 static struct resource au1xxx_eth0_resources[][MAC_RES_COUNT] __initdata = {
 307         [ALCHEMY_CPU_AU1000] = {
 308                 MAC_RES(AU1000_MAC0_PHYS_ADDR,
 309                         AU1000_MACEN_PHYS_ADDR,
 310                         AU1000_MAC0_DMA_INT,
 311                         AU1000_MACDMA0_PHYS_ADDR)
 312         },
 313         [ALCHEMY_CPU_AU1500] = {
 314                 MAC_RES(AU1500_MAC0_PHYS_ADDR,
 315                         AU1500_MACEN_PHYS_ADDR,
 316                         AU1500_MAC0_DMA_INT,
 317                         AU1000_MACDMA0_PHYS_ADDR)
 318         },
 319         [ALCHEMY_CPU_AU1100] = {
 320                 MAC_RES(AU1000_MAC0_PHYS_ADDR,
 321                         AU1000_MACEN_PHYS_ADDR,
 322                         AU1100_MAC0_DMA_INT,
 323                         AU1000_MACDMA0_PHYS_ADDR)
 324         },
 325         [ALCHEMY_CPU_AU1550] = {
 326                 MAC_RES(AU1000_MAC0_PHYS_ADDR,
 327                         AU1000_MACEN_PHYS_ADDR,
 328                         AU1550_MAC0_DMA_INT,
 329                         AU1000_MACDMA0_PHYS_ADDR)
 330         },
 331 };
 332
 333 static struct au1000_eth_platform_data au1xxx_eth0_platform_data = {
 334         .phy1_search_mac0 = 1,
 335 };
 336
 337 static struct platform_device au1xxx_eth0_device = {
 338         .name           = "au1000-eth",
 339         .id             = 0,
 340         .num_resources  = MAC_RES_COUNT,
 341         .dev.platform_data = &au1xxx_eth0_platform_data,
 342 };
 343
 344 static struct resource au1xxx_eth1_resources[][MAC_RES_COUNT] __initdata = {
 345         [ALCHEMY_CPU_AU1000] = {
 346                 MAC_RES(AU1000_MAC1_PHYS_ADDR,
 347                         AU1000_MACEN_PHYS_ADDR + 4,
 348                         AU1000_MAC1_DMA_INT,
 349                         AU1000_MACDMA1_PHYS_ADDR)
 350         },
 351         [ALCHEMY_CPU_AU1500] = {
 352                 MAC_RES(AU1500_MAC1_PHYS_ADDR,
 353                         AU1500_MACEN_PHYS_ADDR + 4,
 354                         AU1500_MAC1_DMA_INT,
 355                         AU1000_MACDMA1_PHYS_ADDR)
 356         },
 357         [ALCHEMY_CPU_AU1550] = {
 358                 MAC_RES(AU1000_MAC1_PHYS_ADDR,
 359                         AU1000_MACEN_PHYS_ADDR + 4,
 360                         AU1550_MAC1_DMA_INT,
 361                         AU1000_MACDMA1_PHYS_ADDR)
 362         },
 363 };
 364
 365 static struct au1000_eth_platform_data au1xxx_eth1_platform_data = {
 366         .phy1_search_mac0 = 1,
 367 };
 368
 369 static struct platform_device au1xxx_eth1_device = {
 370         .name           = "au1000-eth",
 371         .id             = 1,
 372         .num_resources  = MAC_RES_COUNT,
 373         .dev.platform_data = &au1xxx_eth1_platform_data,
 374 };
 375
 376 void __init au1xxx_override_eth_cfg(unsigned int port,
 377                         struct au1000_eth_platform_data *eth_data)
 378 {
 379         if (!eth_data || port > 1)
 380                 return;
 381
 382         if (port == 0)
 383                 memcpy(&au1xxx_eth0_platform_data, eth_data,
 384                         sizeof(struct au1000_eth_platform_data));
 385         else
 386                 memcpy(&au1xxx_eth1_platform_data, eth_data,
 387                         sizeof(struct au1000_eth_platform_data));
 388 }
 389
 390 static void __init alchemy_setup_macs(int ctype)
 391 {
 392         int ret, i;
 393         unsigned char ethaddr[6];
 394         struct resource *macres;
 395
 396         /* Handle 1st MAC */
 397         if (alchemy_get_macs(ctype) < 1)
 398                 return;
 399
 400         macres = kmemdup(au1xxx_eth0_resources[ctype],
 401                          sizeof(struct resource) * MAC_RES_COUNT, GFP_KERNEL);
 402         if (!macres) {
 403                 printk(KERN_INFO "Alchemy: no memory for MAC0 resources\n");
 404                 return;
 405         }
 406         au1xxx_eth0_device.resource = macres;
 407
 408         i = prom_get_ethernet_addr(ethaddr);
 409         if (!i && !is_valid_ether_addr(au1xxx_eth0_platform_data.mac))
 410                 memcpy(au1xxx_eth0_platform_data.mac, ethaddr, 6);
 411
 412         ret = platform_device_register(&au1xxx_eth0_device);
 413         if (ret)
 414                 printk(KERN_INFO "Alchemy: failed to register MAC0\n");
 415
 416
 417         /* Handle 2nd MAC */
 418         if (alchemy_get_macs(ctype) < 2)
 419                 return;
 420
 421         macres = kmemdup(au1xxx_eth1_resources[ctype],
 422                          sizeof(struct resource) * MAC_RES_COUNT, GFP_KERNEL);
 423         if (!macres) {
 424                 printk(KERN_INFO "Alchemy: no memory for MAC1 resources\n");
 425                 return;
 426         }
 427         au1xxx_eth1_device.resource = macres;
 428
 429         ethaddr[5] += 1;        /* next addr for 2nd MAC */
 430         if (!i && !is_valid_ether_addr(au1xxx_eth1_platform_data.mac))
 431                 memcpy(au1xxx_eth1_platform_data.mac, ethaddr, 6);
 432
 433         /* Register second MAC if enabled in pinfunc */
 434         if (!(alchemy_rdsys(AU1000_SYS_PINFUNC) & SYS_PF_NI2)) {
 435                 ret = platform_device_register(&au1xxx_eth1_device);
 436                 if (ret)
 437                         printk(KERN_INFO "Alchemy: failed to register MAC1\n");
 438         }
 439 }
 440
 441 static int __init au1xxx_platform_init(void)
 442 {
 443         int ctype = alchemy_get_cputype();
 444
 445         alchemy_setup_uarts(ctype);
 446         alchemy_setup_macs(ctype);
 447         alchemy_setup_usb(ctype);
 448
 449         return 0;
 450 }
 451
 452 arch_initcall(au1xxx_platform_init);