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 31static 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 .mapsize = 0x1000, \ 55 .irq = _irq, \ 56 .regshift = 2, \ 57 .flags = UPF_SKIP_TEST | UPF_IOREMAP | \ 58 UPF_FIXED_TYPE, \ 59 .type = PORT_16550A, \ 60 .pm = alchemy_8250_pm, \ 61 } 62 63static 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 96static struct platform_device au1xx0_uart_device = { 97 .name = "serial8250", 98 .id = PLAT8250_DEV_AU1X00, 99}; 100 101static 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 (au_platform_setup(&ports[s]) < 0) { 130 kfree(ports); 131 printk(KERN_INFO "Alchemy: missing support for UARTs\n"); 132 return; 133 } 134 } 135 if (platform_device_register(&au1xx0_uart_device)) 136 printk(KERN_INFO "Alchemy: failed to register UARTs\n"); 137} 138 139 140static u64 alchemy_all_dmamask = DMA_BIT_MASK(32); 141 142/* Power on callback for the ehci platform driver */ 143static int alchemy_ehci_power_on(struct platform_device *pdev) 144{ 145 return alchemy_usb_control(ALCHEMY_USB_EHCI0, 1); 146} 147 148/* Power off/suspend callback for the ehci platform driver */ 149static void alchemy_ehci_power_off(struct platform_device *pdev) 150{ 151 alchemy_usb_control(ALCHEMY_USB_EHCI0, 0); 152} 153 154static struct usb_ehci_pdata alchemy_ehci_pdata = { 155 .no_io_watchdog = 1, 156 .power_on = alchemy_ehci_power_on, 157 .power_off = alchemy_ehci_power_off, 158 .power_suspend = alchemy_ehci_power_off, 159}; 160 161/* Power on callback for the ohci platform driver */ 162static int alchemy_ohci_power_on(struct platform_device *pdev) 163{ 164 int unit; 165 166 unit = (pdev->id == 1) ? 167 ALCHEMY_USB_OHCI1 : ALCHEMY_USB_OHCI0; 168 169 return alchemy_usb_control(unit, 1); 170} 171 172/* Power off/suspend callback for the ohci platform driver */ 173static void alchemy_ohci_power_off(struct platform_device *pdev) 174{ 175 int unit; 176 177 unit = (pdev->id == 1) ? 178 ALCHEMY_USB_OHCI1 : ALCHEMY_USB_OHCI0; 179 180 alchemy_usb_control(unit, 0); 181} 182 183static struct usb_ohci_pdata alchemy_ohci_pdata = { 184 .power_on = alchemy_ohci_power_on, 185 .power_off = alchemy_ohci_power_off, 186 .power_suspend = alchemy_ohci_power_off, 187}; 188 189static unsigned long alchemy_ohci_data[][2] __initdata = { 190 [ALCHEMY_CPU_AU1000] = { AU1000_USB_OHCI_PHYS_ADDR, AU1000_USB_HOST_INT }, 191 [ALCHEMY_CPU_AU1500] = { AU1000_USB_OHCI_PHYS_ADDR, AU1500_USB_HOST_INT }, 192 [ALCHEMY_CPU_AU1100] = { AU1000_USB_OHCI_PHYS_ADDR, AU1100_USB_HOST_INT }, 193 [ALCHEMY_CPU_AU1550] = { AU1550_USB_OHCI_PHYS_ADDR, AU1550_USB_HOST_INT }, 194 [ALCHEMY_CPU_AU1200] = { AU1200_USB_OHCI_PHYS_ADDR, AU1200_USB_INT }, 195 [ALCHEMY_CPU_AU1300] = { AU1300_USB_OHCI0_PHYS_ADDR, AU1300_USB_INT }, 196}; 197 198static unsigned long alchemy_ehci_data[][2] __initdata = { 199 [ALCHEMY_CPU_AU1200] = { AU1200_USB_EHCI_PHYS_ADDR, AU1200_USB_INT }, 200 [ALCHEMY_CPU_AU1300] = { AU1300_USB_EHCI_PHYS_ADDR, AU1300_USB_INT }, 201}; 202 203static int __init _new_usbres(struct resource **r, struct platform_device **d) 204{ 205 *r = kcalloc(2, sizeof(struct resource), GFP_KERNEL); 206 if (!*r) 207 return -ENOMEM; 208 *d = kzalloc(sizeof(struct platform_device), GFP_KERNEL); 209 if (!*d) { 210 kfree(*r); 211 return -ENOMEM; 212 } 213 214 (*d)->dev.coherent_dma_mask = DMA_BIT_MASK(32); 215 (*d)->num_resources = 2; 216 (*d)->resource = *r; 217 218 return 0; 219} 220 221static void __init alchemy_setup_usb(int ctype) 222{ 223 struct resource *res; 224 struct platform_device *pdev; 225 226 /* setup OHCI0. Every variant has one */ 227 if (_new_usbres(&res, &pdev)) 228 return; 229 230 res[0].start = alchemy_ohci_data[ctype][0]; 231 res[0].end = res[0].start + 0x100 - 1; 232 res[0].flags = IORESOURCE_MEM; 233 res[1].start = alchemy_ohci_data[ctype][1]; 234 res[1].end = res[1].start; 235 res[1].flags = IORESOURCE_IRQ; 236 pdev->name = "ohci-platform"; 237 pdev->id = 0; 238 pdev->dev.dma_mask = &alchemy_all_dmamask; 239 pdev->dev.platform_data = &alchemy_ohci_pdata; 240 241 if (platform_device_register(pdev)) 242 printk(KERN_INFO "Alchemy USB: cannot add OHCI0\n"); 243 244 245 /* setup EHCI0: Au1200/Au1300 */ 246 if ((ctype == ALCHEMY_CPU_AU1200) || (ctype == ALCHEMY_CPU_AU1300)) { 247 if (_new_usbres(&res, &pdev)) 248 return; 249 250 res[0].start = alchemy_ehci_data[ctype][0]; 251 res[0].end = res[0].start + 0x100 - 1; 252 res[0].flags = IORESOURCE_MEM; 253 res[1].start = alchemy_ehci_data[ctype][1]; 254 res[1].end = res[1].start; 255 res[1].flags = IORESOURCE_IRQ; 256 pdev->name = "ehci-platform"; 257 pdev->id = 0; 258 pdev->dev.dma_mask = &alchemy_all_dmamask; 259 pdev->dev.platform_data = &alchemy_ehci_pdata; 260 261 if (platform_device_register(pdev)) 262 printk(KERN_INFO "Alchemy USB: cannot add EHCI0\n"); 263 } 264 265 /* Au1300: OHCI1 */ 266 if (ctype == ALCHEMY_CPU_AU1300) { 267 if (_new_usbres(&res, &pdev)) 268 return; 269 270 res[0].start = AU1300_USB_OHCI1_PHYS_ADDR; 271 res[0].end = res[0].start + 0x100 - 1; 272 res[0].flags = IORESOURCE_MEM; 273 res[1].start = AU1300_USB_INT; 274 res[1].end = res[1].start; 275 res[1].flags = IORESOURCE_IRQ; 276 pdev->name = "ohci-platform"; 277 pdev->id = 1; 278 pdev->dev.dma_mask = &alchemy_all_dmamask; 279 pdev->dev.platform_data = &alchemy_ohci_pdata; 280 281 if (platform_device_register(pdev)) 282 printk(KERN_INFO "Alchemy USB: cannot add OHCI1\n"); 283 } 284} 285 286/* Macro to help defining the Ethernet MAC resources */ 287#define MAC_RES_COUNT 4 /* MAC regs, MAC en, MAC INT, MACDMA regs */ 288#define MAC_RES(_base, _enable, _irq, _macdma) \ 289 { \ 290 .start = _base, \ 291 .end = _base + 0xffff, \ 292 .flags = IORESOURCE_MEM, \ 293 }, \ 294 { \ 295 .start = _enable, \ 296 .end = _enable + 0x3, \ 297 .flags = IORESOURCE_MEM, \ 298 }, \ 299 { \ 300 .start = _irq, \ 301 .end = _irq, \ 302 .flags = IORESOURCE_IRQ \ 303 }, \ 304 { \ 305 .start = _macdma, \ 306 .end = _macdma + 0x1ff, \ 307 .flags = IORESOURCE_MEM, \ 308 } 309 310static struct resource au1xxx_eth0_resources[][MAC_RES_COUNT] __initdata = { 311 [ALCHEMY_CPU_AU1000] = { 312 MAC_RES(AU1000_MAC0_PHYS_ADDR, 313 AU1000_MACEN_PHYS_ADDR, 314 AU1000_MAC0_DMA_INT, 315 AU1000_MACDMA0_PHYS_ADDR) 316 }, 317 [ALCHEMY_CPU_AU1500] = { 318 MAC_RES(AU1500_MAC0_PHYS_ADDR, 319 AU1500_MACEN_PHYS_ADDR, 320 AU1500_MAC0_DMA_INT, 321 AU1000_MACDMA0_PHYS_ADDR) 322 }, 323 [ALCHEMY_CPU_AU1100] = { 324 MAC_RES(AU1000_MAC0_PHYS_ADDR, 325 AU1000_MACEN_PHYS_ADDR, 326 AU1100_MAC0_DMA_INT, 327 AU1000_MACDMA0_PHYS_ADDR) 328 }, 329 [ALCHEMY_CPU_AU1550] = { 330 MAC_RES(AU1000_MAC0_PHYS_ADDR, 331 AU1000_MACEN_PHYS_ADDR, 332 AU1550_MAC0_DMA_INT, 333 AU1000_MACDMA0_PHYS_ADDR) 334 }, 335}; 336 337static struct au1000_eth_platform_data au1xxx_eth0_platform_data = { 338 .phy1_search_mac0 = 1, 339}; 340 341static struct platform_device au1xxx_eth0_device = { 342 .name = "au1000-eth", 343 .id = 0, 344 .num_resources = MAC_RES_COUNT, 345 .dev = { 346 .dma_mask = &alchemy_all_dmamask, 347 .coherent_dma_mask = DMA_BIT_MASK(32), 348 .platform_data = &au1xxx_eth0_platform_data, 349 }, 350}; 351 352static struct resource au1xxx_eth1_resources[][MAC_RES_COUNT] __initdata = { 353 [ALCHEMY_CPU_AU1000] = { 354 MAC_RES(AU1000_MAC1_PHYS_ADDR, 355 AU1000_MACEN_PHYS_ADDR + 4, 356 AU1000_MAC1_DMA_INT, 357 AU1000_MACDMA1_PHYS_ADDR) 358 }, 359 [ALCHEMY_CPU_AU1500] = { 360 MAC_RES(AU1500_MAC1_PHYS_ADDR, 361 AU1500_MACEN_PHYS_ADDR + 4, 362 AU1500_MAC1_DMA_INT, 363 AU1000_MACDMA1_PHYS_ADDR) 364 }, 365 [ALCHEMY_CPU_AU1550] = { 366 MAC_RES(AU1000_MAC1_PHYS_ADDR, 367 AU1000_MACEN_PHYS_ADDR + 4, 368 AU1550_MAC1_DMA_INT, 369 AU1000_MACDMA1_PHYS_ADDR) 370 }, 371}; 372 373static struct au1000_eth_platform_data au1xxx_eth1_platform_data = { 374 .phy1_search_mac0 = 1, 375}; 376 377static struct platform_device au1xxx_eth1_device = { 378 .name = "au1000-eth", 379 .id = 1, 380 .num_resources = MAC_RES_COUNT, 381 .dev = { 382 .dma_mask = &alchemy_all_dmamask, 383 .coherent_dma_mask = DMA_BIT_MASK(32), 384 .platform_data = &au1xxx_eth1_platform_data, 385 }, 386}; 387 388void __init au1xxx_override_eth_cfg(unsigned int port, 389 struct au1000_eth_platform_data *eth_data) 390{ 391 if (!eth_data || port > 1) 392 return; 393 394 if (port == 0) 395 memcpy(&au1xxx_eth0_platform_data, eth_data, 396 sizeof(struct au1000_eth_platform_data)); 397 else 398 memcpy(&au1xxx_eth1_platform_data, eth_data, 399 sizeof(struct au1000_eth_platform_data)); 400} 401 402static void __init alchemy_setup_macs(int ctype) 403{ 404 int ret, i; 405 unsigned char ethaddr[6]; 406 struct resource *macres; 407 408 /* Handle 1st MAC */ 409 if (alchemy_get_macs(ctype) < 1) 410 return; 411 412 macres = kmemdup(au1xxx_eth0_resources[ctype], 413 sizeof(struct resource) * MAC_RES_COUNT, GFP_KERNEL); 414 if (!macres) { 415 printk(KERN_INFO "Alchemy: no memory for MAC0 resources\n"); 416 return; 417 } 418 au1xxx_eth0_device.resource = macres; 419 420 i = prom_get_ethernet_addr(ethaddr); 421 if (!i && !is_valid_ether_addr(au1xxx_eth0_platform_data.mac)) 422 memcpy(au1xxx_eth0_platform_data.mac, ethaddr, 6); 423 424 ret = platform_device_register(&au1xxx_eth0_device); 425 if (ret) 426 printk(KERN_INFO "Alchemy: failed to register MAC0\n"); 427 428 429 /* Handle 2nd MAC */ 430 if (alchemy_get_macs(ctype) < 2) 431 return; 432 433 macres = kmemdup(au1xxx_eth1_resources[ctype], 434 sizeof(struct resource) * MAC_RES_COUNT, GFP_KERNEL); 435 if (!macres) { 436 printk(KERN_INFO "Alchemy: no memory for MAC1 resources\n"); 437 return; 438 } 439 au1xxx_eth1_device.resource = macres; 440 441 ethaddr[5] += 1; /* next addr for 2nd MAC */ 442 if (!i && !is_valid_ether_addr(au1xxx_eth1_platform_data.mac)) 443 memcpy(au1xxx_eth1_platform_data.mac, ethaddr, 6); 444 445 /* Register second MAC if enabled in pinfunc */ 446 if (!(alchemy_rdsys(AU1000_SYS_PINFUNC) & SYS_PF_NI2)) { 447 ret = platform_device_register(&au1xxx_eth1_device); 448 if (ret) 449 printk(KERN_INFO "Alchemy: failed to register MAC1\n"); 450 } 451} 452 453static int __init au1xxx_platform_init(void) 454{ 455 int ctype = alchemy_get_cputype(); 456 457 alchemy_setup_uarts(ctype); 458 alchemy_setup_macs(ctype); 459 alchemy_setup_usb(ctype); 460 461 return 0; 462} 463 464arch_initcall(au1xxx_platform_init); 465