| 1 | /* |
| 2 | * Ralink RT3662/RT3883 SoC platform device registration |
| 3 | * |
| 4 | * Copyright (C) 2011-2012 Gabor Juhos <juhosg@openwrt.org> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify it |
| 7 | * under the terms of the GNU General Public License version 2 as published |
| 8 | * by the Free Software Foundation. |
| 9 | */ |
| 10 | |
| 11 | #include <linux/kernel.h> |
| 12 | #include <linux/platform_device.h> |
| 13 | #include <linux/mtd/mtd.h> |
| 14 | #include <linux/mtd/physmap.h> |
| 15 | #include <linux/mtd/partitions.h> |
| 16 | #include <linux/dma-mapping.h> |
| 17 | #include <linux/spi/spi.h> |
| 18 | #include <linux/delay.h> |
| 19 | #include <linux/err.h> |
| 20 | #include <linux/clk.h> |
| 21 | #include <linux/rt2x00_platform.h> |
| 22 | #include <linux/usb/ehci_pdriver.h> |
| 23 | #include <linux/usb/ohci_pdriver.h> |
| 24 | |
| 25 | #include <asm/addrspace.h> |
| 26 | |
| 27 | #include <asm/mach-ralink/rt3883.h> |
| 28 | #include <asm/mach-ralink/rt3883_regs.h> |
| 29 | #include <asm/mach-ralink/ramips_nand_platform.h> |
| 30 | #include "devices.h" |
| 31 | |
| 32 | #include <ramips_eth_platform.h> |
| 33 | |
| 34 | static struct resource rt3883_flash0_resources[] = { |
| 35 | { |
| 36 | .flags = IORESOURCE_MEM, |
| 37 | .start = RT3883_BOOT_BASE, |
| 38 | .end = RT3883_BOOT_BASE + RT3883_BOOT_SIZE - 1, |
| 39 | }, |
| 40 | }; |
| 41 | |
| 42 | struct physmap_flash_data rt3883_flash0_data; |
| 43 | static struct platform_device rt3883_flash0_device = { |
| 44 | .name = "physmap-flash", |
| 45 | .resource = rt3883_flash0_resources, |
| 46 | .num_resources = ARRAY_SIZE(rt3883_flash0_resources), |
| 47 | .dev = { |
| 48 | .platform_data = &rt3883_flash0_data, |
| 49 | }, |
| 50 | }; |
| 51 | |
| 52 | static struct resource rt3883_flash1_resources[] = { |
| 53 | { |
| 54 | .flags = IORESOURCE_MEM, |
| 55 | .start = RT3883_SRAM_BASE, |
| 56 | .end = RT3883_SRAM_BASE + RT3883_SRAM_SIZE - 1, |
| 57 | }, |
| 58 | }; |
| 59 | |
| 60 | struct physmap_flash_data rt3883_flash1_data; |
| 61 | static struct platform_device rt3883_flash1_device = { |
| 62 | .name = "physmap-flash", |
| 63 | .resource = rt3883_flash1_resources, |
| 64 | .num_resources = ARRAY_SIZE(rt3883_flash1_resources), |
| 65 | .dev = { |
| 66 | .platform_data = &rt3883_flash1_data, |
| 67 | }, |
| 68 | }; |
| 69 | |
| 70 | static int rt3883_flash_instance __initdata; |
| 71 | void __init rt3883_register_pflash(unsigned int id) |
| 72 | { |
| 73 | struct platform_device *pdev; |
| 74 | struct physmap_flash_data *pdata; |
| 75 | void __iomem *fscc_base; |
| 76 | u32 t; |
| 77 | int reg; |
| 78 | |
| 79 | switch (id) { |
| 80 | case 0: |
| 81 | pdev = &rt3883_flash0_device; |
| 82 | reg = RT3883_FSCC_REG_FLASH_CFG0; |
| 83 | break; |
| 84 | case 1: |
| 85 | pdev = &rt3883_flash1_device; |
| 86 | reg = RT3883_FSCC_REG_FLASH_CFG1; |
| 87 | break; |
| 88 | default: |
| 89 | return; |
| 90 | } |
| 91 | |
| 92 | pdata = pdev->dev.platform_data; |
| 93 | |
| 94 | fscc_base = ioremap(RT3883_FSCC_BASE, RT3883_FSCC_SIZE); |
| 95 | if (!fscc_base) |
| 96 | panic("RT3883: ioremap failed for FSCC"); |
| 97 | |
| 98 | t = __raw_readl(fscc_base + reg); |
| 99 | iounmap(fscc_base); |
| 100 | |
| 101 | t = (t >> RT3883_FLASH_CFG_WIDTH_SHIFT) & RT3883_FLASH_CFG_WIDTH_MASK; |
| 102 | switch (t) { |
| 103 | case RT3883_FLASH_CFG_WIDTH_8BIT: |
| 104 | pdata->width = 1; |
| 105 | break; |
| 106 | case RT3883_FLASH_CFG_WIDTH_16BIT: |
| 107 | pdata->width = 2; |
| 108 | break; |
| 109 | case RT3883_FLASH_CFG_WIDTH_32BIT: |
| 110 | if (id == 1) { |
| 111 | pdata->width = 4; |
| 112 | break; |
| 113 | } |
| 114 | /* fallthrough */ |
| 115 | default: |
| 116 | pr_warn("RT3883: flash bank%d: invalid width detected\n", id); |
| 117 | return; |
| 118 | } |
| 119 | |
| 120 | pdev->id = rt3883_flash_instance; |
| 121 | |
| 122 | platform_device_register(pdev); |
| 123 | rt3883_flash_instance++; |
| 124 | } |
| 125 | |
| 126 | static atomic_t rt3883_usb_pwr_ref = ATOMIC_INIT(0); |
| 127 | |
| 128 | static int rt3883_usb_power_on(struct platform_device *pdev) |
| 129 | { |
| 130 | |
| 131 | if (atomic_inc_return(&rt3883_usb_pwr_ref) == 1) { |
| 132 | u32 t; |
| 133 | |
| 134 | t = rt3883_sysc_rr(RT3883_SYSC_REG_USB_PS); |
| 135 | |
| 136 | /* enable clock for port0's and port1's phys */ |
| 137 | t = rt3883_sysc_rr(RT3883_SYSC_REG_CLKCFG1); |
| 138 | t |= RT3883_CLKCFG1_UPHY0_CLK_EN | RT3883_CLKCFG1_UPHY1_CLK_EN; |
| 139 | rt3883_sysc_wr(t, RT3883_SYSC_REG_CLKCFG1); |
| 140 | mdelay(500); |
| 141 | |
| 142 | /* pull USBHOST and USBDEV out from reset */ |
| 143 | t = rt3883_sysc_rr(RT3883_SYSC_REG_RSTCTRL); |
| 144 | t &= ~(RT3883_RSTCTRL_UHST | RT3883_RSTCTRL_UDEV); |
| 145 | rt3883_sysc_wr(t, RT3883_SYSC_REG_RSTCTRL); |
| 146 | mdelay(500); |
| 147 | |
| 148 | /* enable host mode */ |
| 149 | t = rt3883_sysc_rr(RT3883_SYSC_REG_SYSCFG1); |
| 150 | t |= RT3883_SYSCFG1_USB0_HOST_MODE; |
| 151 | rt3883_sysc_wr(t, RT3883_SYSC_REG_SYSCFG1); |
| 152 | |
| 153 | t = rt3883_sysc_rr(RT3883_SYSC_REG_USB_PS); |
| 154 | } |
| 155 | |
| 156 | return 0; |
| 157 | } |
| 158 | |
| 159 | static void rt3883_usb_power_off(struct platform_device *pdev) |
| 160 | { |
| 161 | if (atomic_dec_return(&rt3883_usb_pwr_ref) == 0) { |
| 162 | u32 t; |
| 163 | |
| 164 | /* put USBHOST and USBDEV into reset */ |
| 165 | t = rt3883_sysc_rr(RT3883_SYSC_REG_RSTCTRL); |
| 166 | t |= RT3883_RSTCTRL_UHST | RT3883_RSTCTRL_UDEV; |
| 167 | rt3883_sysc_wr(t, RT3883_SYSC_REG_RSTCTRL); |
| 168 | udelay(10000); |
| 169 | |
| 170 | /* disable clock for port0's and port1's phys*/ |
| 171 | t = rt3883_sysc_rr(RT3883_SYSC_REG_CLKCFG1); |
| 172 | t &= ~(RT3883_CLKCFG1_UPHY0_CLK_EN | |
| 173 | RT3883_CLKCFG1_UPHY1_CLK_EN); |
| 174 | rt3883_sysc_wr(t, RT3883_SYSC_REG_CLKCFG1); |
| 175 | udelay(10000); |
| 176 | } |
| 177 | } |
| 178 | |
| 179 | static struct usb_ehci_pdata rt3883_ehci_data = { |
| 180 | .port_power_off = 1, |
| 181 | .power_on = rt3883_usb_power_on, |
| 182 | .power_off = rt3883_usb_power_off, |
| 183 | }; |
| 184 | |
| 185 | static struct resource rt3883_ehci_resources[] = { |
| 186 | { |
| 187 | .start = RT3883_EHCI_BASE, |
| 188 | .end = RT3883_EHCI_BASE + PAGE_SIZE - 1, |
| 189 | .flags = IORESOURCE_MEM, |
| 190 | }, { |
| 191 | .start = RT3883_INTC_IRQ_UHST, |
| 192 | .end = RT3883_INTC_IRQ_UHST, |
| 193 | .flags = IORESOURCE_IRQ, |
| 194 | }, |
| 195 | }; |
| 196 | |
| 197 | static u64 rt3883_ehci_dmamask = DMA_BIT_MASK(32); |
| 198 | static struct platform_device rt3883_ehci_device = { |
| 199 | .name = "ehci-platform", |
| 200 | .id = -1, |
| 201 | .resource = rt3883_ehci_resources, |
| 202 | .num_resources = ARRAY_SIZE(rt3883_ehci_resources), |
| 203 | .dev = { |
| 204 | .dma_mask = &rt3883_ehci_dmamask, |
| 205 | .coherent_dma_mask = DMA_BIT_MASK(32), |
| 206 | .platform_data = &rt3883_ehci_data, |
| 207 | }, |
| 208 | }; |
| 209 | |
| 210 | static struct resource rt3883_ohci_resources[] = { |
| 211 | { |
| 212 | .start = RT3883_OHCI_BASE, |
| 213 | .end = RT3883_OHCI_BASE + PAGE_SIZE - 1, |
| 214 | .flags = IORESOURCE_MEM, |
| 215 | }, { |
| 216 | .start = RT3883_INTC_IRQ_UHST, |
| 217 | .end = RT3883_INTC_IRQ_UHST, |
| 218 | .flags = IORESOURCE_IRQ, |
| 219 | }, |
| 220 | }; |
| 221 | |
| 222 | static struct usb_ohci_pdata rt3883_ohci_data = { |
| 223 | .power_on = rt3883_usb_power_on, |
| 224 | .power_off = rt3883_usb_power_off, |
| 225 | }; |
| 226 | |
| 227 | static u64 rt3883_ohci_dmamask = DMA_BIT_MASK(32); |
| 228 | static struct platform_device rt3883_ohci_device = { |
| 229 | .name = "ohci-platform", |
| 230 | .id = -1, |
| 231 | .resource = rt3883_ohci_resources, |
| 232 | .num_resources = ARRAY_SIZE(rt3883_ohci_resources), |
| 233 | .dev = { |
| 234 | .dma_mask = &rt3883_ohci_dmamask, |
| 235 | .coherent_dma_mask = DMA_BIT_MASK(32), |
| 236 | .platform_data = &rt3883_ohci_data, |
| 237 | }, |
| 238 | }; |
| 239 | |
| 240 | void __init rt3883_register_usbhost(void) |
| 241 | { |
| 242 | platform_device_register(&rt3883_ehci_device); |
| 243 | platform_device_register(&rt3883_ohci_device); |
| 244 | } |
| 245 | |
| 246 | static void rt3883_fe_reset(void) |
| 247 | { |
| 248 | u32 t; |
| 249 | |
| 250 | t = rt3883_sysc_rr(RT3883_SYSC_REG_RSTCTRL); |
| 251 | t |= RT3883_RSTCTRL_FE; |
| 252 | rt3883_sysc_wr(t , RT3883_SYSC_REG_RSTCTRL); |
| 253 | |
| 254 | t &= ~RT3883_RSTCTRL_FE; |
| 255 | rt3883_sysc_wr(t, RT3883_SYSC_REG_RSTCTRL); |
| 256 | } |
| 257 | |
| 258 | static struct resource rt3883_eth_resources[] = { |
| 259 | { |
| 260 | .start = RT3883_FE_BASE, |
| 261 | .end = RT3883_FE_BASE + PAGE_SIZE - 1, |
| 262 | .flags = IORESOURCE_MEM, |
| 263 | }, { |
| 264 | .start = RT3883_CPU_IRQ_FE, |
| 265 | .end = RT3883_CPU_IRQ_FE, |
| 266 | .flags = IORESOURCE_IRQ, |
| 267 | }, |
| 268 | }; |
| 269 | |
| 270 | struct ramips_eth_platform_data rt3883_eth_data = { |
| 271 | .mac = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55 }, |
| 272 | .reset_fe = rt3883_fe_reset, |
| 273 | .min_pkt_len = 64, |
| 274 | }; |
| 275 | |
| 276 | static struct platform_device rt3883_eth_device = { |
| 277 | .name = "ramips_eth", |
| 278 | .resource = rt3883_eth_resources, |
| 279 | .num_resources = ARRAY_SIZE(rt3883_eth_resources), |
| 280 | .dev = { |
| 281 | .platform_data = &rt3883_eth_data, |
| 282 | } |
| 283 | }; |
| 284 | |
| 285 | void __init rt3883_register_ethernet(void) |
| 286 | { |
| 287 | struct clk *clk; |
| 288 | |
| 289 | clk = clk_get(NULL, "sys"); |
| 290 | if (IS_ERR(clk)) |
| 291 | panic("unable to get SYS clock, err=%ld", PTR_ERR(clk)); |
| 292 | |
| 293 | rt3883_eth_data.sys_freq = clk_get_rate(clk); |
| 294 | |
| 295 | platform_device_register(&rt3883_eth_device); |
| 296 | } |
| 297 | |
| 298 | static struct resource rt3883_wlan_resources[] = { |
| 299 | { |
| 300 | .start = RT3883_WLAN_BASE, |
| 301 | .end = RT3883_WLAN_BASE + 0x3FFFF, |
| 302 | .flags = IORESOURCE_MEM, |
| 303 | }, { |
| 304 | .start = RT3883_CPU_IRQ_WLAN, |
| 305 | .end = RT3883_CPU_IRQ_WLAN, |
| 306 | .flags = IORESOURCE_IRQ, |
| 307 | }, |
| 308 | }; |
| 309 | |
| 310 | struct rt2x00_platform_data rt3883_wlan_data; |
| 311 | static struct platform_device rt3883_wlan_device = { |
| 312 | .name = "rt2800_wmac", |
| 313 | .resource = rt3883_wlan_resources, |
| 314 | .num_resources = ARRAY_SIZE(rt3883_wlan_resources), |
| 315 | .dev = { |
| 316 | .platform_data = &rt3883_wlan_data, |
| 317 | } |
| 318 | }; |
| 319 | |
| 320 | void __init rt3883_register_wlan(void) |
| 321 | { |
| 322 | rt3883_wlan_data.eeprom_file_name = "soc_wmac.eeprom", |
| 323 | platform_device_register(&rt3883_wlan_device); |
| 324 | } |
| 325 | |
| 326 | static struct resource rt3883_wdt_resources[] = { |
| 327 | { |
| 328 | .start = RT3883_TIMER_BASE, |
| 329 | .end = RT3883_TIMER_BASE + RT3883_TIMER_SIZE - 1, |
| 330 | .flags = IORESOURCE_MEM, |
| 331 | }, |
| 332 | }; |
| 333 | |
| 334 | static struct platform_device rt3883_wdt_device = { |
| 335 | .name = "ramips-wdt", |
| 336 | .id = -1, |
| 337 | .resource = rt3883_wdt_resources, |
| 338 | .num_resources = ARRAY_SIZE(rt3883_wdt_resources), |
| 339 | }; |
| 340 | |
| 341 | void __init rt3883_register_wdt(bool enable_reset) |
| 342 | { |
| 343 | if (enable_reset) { |
| 344 | u32 t; |
| 345 | |
| 346 | /* enable WDT reset output on GPIO 2 */ |
| 347 | t = rt3883_sysc_rr(RT3883_SYSC_REG_SYSCFG1); |
| 348 | t |= RT3883_SYSCFG1_GPIO2_AS_WDT_OUT; |
| 349 | rt3883_sysc_wr(t, RT3883_SYSC_REG_SYSCFG1); |
| 350 | } |
| 351 | |
| 352 | platform_device_register(&rt3883_wdt_device); |
| 353 | } |
| 354 | |
| 355 | static struct resource rt3883_nand_resources[] = { |
| 356 | { |
| 357 | .flags = IORESOURCE_MEM, |
| 358 | .start = RT3883_NANDC_BASE, |
| 359 | .end = RT3883_NANDC_BASE + RT3883_NANDC_SIZE - 1, |
| 360 | }, |
| 361 | }; |
| 362 | |
| 363 | struct ramips_nand_platform_data rt3883_nand_data; |
| 364 | static struct platform_device rt3883_nand_device = { |
| 365 | .name = RAMIPS_NAND_DRIVER_NAME, |
| 366 | .id = -1, |
| 367 | .resource = rt3883_nand_resources, |
| 368 | .num_resources = ARRAY_SIZE(rt3883_nand_resources), |
| 369 | .dev = { |
| 370 | .platform_data = &rt3883_nand_data, |
| 371 | }, |
| 372 | }; |
| 373 | |
| 374 | void __init rt3883_register_nand(void) |
| 375 | { |
| 376 | platform_device_register(&rt3883_nand_device); |
| 377 | } |
| 378 | |
| 379 | static struct resource rt3883_spi_resources[] = { |
| 380 | { |
| 381 | .flags = IORESOURCE_MEM, |
| 382 | .start = RT3883_SPI_BASE, |
| 383 | .end = RT3883_SPI_BASE + RT3883_SPI_SIZE - 1, |
| 384 | }, |
| 385 | }; |
| 386 | |
| 387 | static struct platform_device rt3883_spi_device = { |
| 388 | .name = "ramips-spi", |
| 389 | .id = 0, |
| 390 | .resource = rt3883_spi_resources, |
| 391 | .num_resources = ARRAY_SIZE(rt3883_spi_resources), |
| 392 | }; |
| 393 | |
| 394 | void __init rt3883_register_spi(struct spi_board_info *info, int n) |
| 395 | { |
| 396 | spi_register_board_info(info, n); |
| 397 | platform_device_register(&rt3883_spi_device); |
| 398 | } |
| 399 | |
| 400 | |
