1 /* 2 * r8a7778 processor support 3 * 4 * Copyright (C) 2013 Renesas Solutions Corp. 5 * Copyright (C) 2013 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> 6 * Copyright (C) 2013 Cogent Embedded, Inc. 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; version 2 of the License. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 20 */ 21 22 #include <linux/kernel.h> 23 #include <linux/io.h> 24 #include <linux/irqchip/arm-gic.h> 25 #include <linux/of.h> 26 #include <linux/of_platform.h> 27 #include <linux/platform_data/gpio-rcar.h> 28 #include <linux/platform_data/irq-renesas-intc-irqpin.h> 29 #include <linux/platform_device.h> 30 #include <linux/irqchip.h> 31 #include <linux/serial_sci.h> 32 #include <linux/sh_timer.h> 33 #include <linux/pm_runtime.h> 34 #include <linux/usb/phy.h> 35 #include <linux/usb/hcd.h> 36 #include <linux/usb/ehci_pdriver.h> 37 #include <linux/usb/ohci_pdriver.h> 38 #include <linux/dma-mapping.h> 39 #include <mach/irqs.h> 40 #include <mach/r8a7778.h> 41 #include <mach/common.h> 42 #include <asm/mach/arch.h> 43 #include <asm/hardware/cache-l2x0.h> 44 45 /* SCIF */ 46 #define SCIF_INFO(baseaddr, irq) \ 47 { \ 48 .mapbase = baseaddr, \ 49 .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP, \ 50 .scscr = SCSCR_RE | SCSCR_TE | SCSCR_CKE1, \ 51 .scbrr_algo_id = SCBRR_ALGO_2, \ 52 .type = PORT_SCIF, \ 53 .irqs = SCIx_IRQ_MUXED(irq), \ 54 } 55 56 static struct plat_sci_port scif_platform_data[] __initdata = { 57 SCIF_INFO(0xffe40000, gic_iid(0x66)), 58 SCIF_INFO(0xffe41000, gic_iid(0x67)), 59 SCIF_INFO(0xffe42000, gic_iid(0x68)), 60 SCIF_INFO(0xffe43000, gic_iid(0x69)), 61 SCIF_INFO(0xffe44000, gic_iid(0x6a)), 62 SCIF_INFO(0xffe45000, gic_iid(0x6b)), 63 }; 64 65 /* TMU */ 66 static struct resource sh_tmu0_resources[] __initdata = { 67 DEFINE_RES_MEM(0xffd80008, 12), 68 DEFINE_RES_IRQ(gic_iid(0x40)), 69 }; 70 71 static struct sh_timer_config sh_tmu0_platform_data __initdata = { 72 .name = "TMU00", 73 .channel_offset = 0x4, 74 .timer_bit = 0, 75 .clockevent_rating = 200, 76 }; 77 78 static struct resource sh_tmu1_resources[] __initdata = { 79 DEFINE_RES_MEM(0xffd80014, 12), 80 DEFINE_RES_IRQ(gic_iid(0x41)), 81 }; 82 83 static struct sh_timer_config sh_tmu1_platform_data __initdata = { 84 .name = "TMU01", 85 .channel_offset = 0x10, 86 .timer_bit = 1, 87 .clocksource_rating = 200, 88 }; 89 90 #define r8a7778_register_tmu(idx) \ 91 platform_device_register_resndata( \ 92 &platform_bus, "sh_tmu", idx, \ 93 sh_tmu##idx##_resources, \ 94 ARRAY_SIZE(sh_tmu##idx##_resources), \ 95 &sh_tmu##idx##_platform_data, \ 96 sizeof(sh_tmu##idx##_platform_data)) 97 98 /* USB */ 99 static struct usb_phy *phy; 100 101 static int usb_power_on(struct platform_device *pdev) 102 { 103 if (IS_ERR(phy)) 104 return PTR_ERR(phy); 105 106 pm_runtime_enable(&pdev->dev); 107 pm_runtime_get_sync(&pdev->dev); 108 109 usb_phy_init(phy); 110 111 return 0; 112 } 113 114 static void usb_power_off(struct platform_device *pdev) 115 { 116 if (IS_ERR(phy)) 117 return; 118 119 usb_phy_shutdown(phy); 120 121 pm_runtime_put_sync(&pdev->dev); 122 pm_runtime_disable(&pdev->dev); 123 } 124 125 static int ehci_init_internal_buffer(struct usb_hcd *hcd) 126 { 127 /* 128 * Below are recommended values from the datasheet; 129 * see [USB :: Setting of EHCI Internal Buffer]. 130 */ 131 /* EHCI IP internal buffer setting */ 132 iowrite32(0x00ff0040, hcd->regs + 0x0094); 133 /* EHCI IP internal buffer enable */ 134 iowrite32(0x00000001, hcd->regs + 0x009C); 135 136 return 0; 137 } 138 139 static struct usb_ehci_pdata ehci_pdata __initdata = { 140 .power_on = usb_power_on, 141 .power_off = usb_power_off, 142 .power_suspend = usb_power_off, 143 .pre_setup = ehci_init_internal_buffer, 144 }; 145 146 static struct resource ehci_resources[] __initdata = { 147 DEFINE_RES_MEM(0xffe70000, 0x400), 148 DEFINE_RES_IRQ(gic_iid(0x4c)), 149 }; 150 151 static struct usb_ohci_pdata ohci_pdata __initdata = { 152 .power_on = usb_power_on, 153 .power_off = usb_power_off, 154 .power_suspend = usb_power_off, 155 }; 156 157 static struct resource ohci_resources[] __initdata = { 158 DEFINE_RES_MEM(0xffe70400, 0x400), 159 DEFINE_RES_IRQ(gic_iid(0x4c)), 160 }; 161 162 #define USB_PLATFORM_INFO(hci) \ 163 static struct platform_device_info hci##_info __initdata = { \ 164 .parent = &platform_bus, \ 165 .name = #hci "-platform", \ 166 .id = -1, \ 167 .res = hci##_resources, \ 168 .num_res = ARRAY_SIZE(hci##_resources), \ 169 .data = &hci##_pdata, \ 170 .size_data = sizeof(hci##_pdata), \ 171 .dma_mask = DMA_BIT_MASK(32), \ 172 } 173 174 USB_PLATFORM_INFO(ehci); 175 USB_PLATFORM_INFO(ohci); 176 177 /* PFC/GPIO */ 178 static struct resource pfc_resources[] __initdata = { 179 DEFINE_RES_MEM(0xfffc0000, 0x118), 180 }; 181 182 #define R8A7778_GPIO(idx) \ 183 static struct resource r8a7778_gpio##idx##_resources[] __initdata = { \ 184 DEFINE_RES_MEM(0xffc40000 + 0x1000 * (idx), 0x30), \ 185 DEFINE_RES_IRQ(gic_iid(0x87)), \ 186 }; \ 187 \ 188 static struct gpio_rcar_config r8a7778_gpio##idx##_platform_data __initdata = { \ 189 .gpio_base = 32 * (idx), \ 190 .irq_base = GPIO_IRQ_BASE(idx), \ 191 .number_of_pins = 32, \ 192 .pctl_name = "pfc-r8a7778", \ 193 } 194 195 R8A7778_GPIO(0); 196 R8A7778_GPIO(1); 197 R8A7778_GPIO(2); 198 R8A7778_GPIO(3); 199 R8A7778_GPIO(4); 200 201 #define r8a7778_register_gpio(idx) \ 202 platform_device_register_resndata( \ 203 &platform_bus, "gpio_rcar", idx, \ 204 r8a7778_gpio##idx##_resources, \ 205 ARRAY_SIZE(r8a7778_gpio##idx##_resources), \ 206 &r8a7778_gpio##idx##_platform_data, \ 207 sizeof(r8a7778_gpio##idx##_platform_data)) 208 209 void __init r8a7778_pinmux_init(void) 210 { 211 platform_device_register_simple( 212 "pfc-r8a7778", -1, 213 pfc_resources, 214 ARRAY_SIZE(pfc_resources)); 215 216 r8a7778_register_gpio(0); 217 r8a7778_register_gpio(1); 218 r8a7778_register_gpio(2); 219 r8a7778_register_gpio(3); 220 r8a7778_register_gpio(4); 221 }; 222 223 /* I2C */ 224 static struct resource i2c_resources[] __initdata = { 225 /* I2C0 */ 226 DEFINE_RES_MEM(0xffc70000, 0x1000), 227 DEFINE_RES_IRQ(gic_iid(0x63)), 228 /* I2C1 */ 229 DEFINE_RES_MEM(0xffc71000, 0x1000), 230 DEFINE_RES_IRQ(gic_iid(0x6e)), 231 /* I2C2 */ 232 DEFINE_RES_MEM(0xffc72000, 0x1000), 233 DEFINE_RES_IRQ(gic_iid(0x6c)), 234 /* I2C3 */ 235 DEFINE_RES_MEM(0xffc73000, 0x1000), 236 DEFINE_RES_IRQ(gic_iid(0x6d)), 237 }; 238 239 static void __init r8a7778_register_i2c(int id) 240 { 241 BUG_ON(id < 0 || id > 3); 242 243 platform_device_register_simple( 244 "i2c-rcar", id, 245 i2c_resources + (2 * id), 2); 246 } 247 248 /* HSPI */ 249 static struct resource hspi_resources[] __initdata = { 250 /* HSPI0 */ 251 DEFINE_RES_MEM(0xfffc7000, 0x18), 252 DEFINE_RES_IRQ(gic_iid(0x5f)), 253 /* HSPI1 */ 254 DEFINE_RES_MEM(0xfffc8000, 0x18), 255 DEFINE_RES_IRQ(gic_iid(0x74)), 256 /* HSPI2 */ 257 DEFINE_RES_MEM(0xfffc6000, 0x18), 258 DEFINE_RES_IRQ(gic_iid(0x75)), 259 }; 260 261 static void __init r8a7778_register_hspi(int id) 262 { 263 BUG_ON(id < 0 || id > 2); 264 265 platform_device_register_simple( 266 "sh-hspi", id, 267 hspi_resources + (2 * id), 2); 268 } 269 270 void __init r8a7778_add_dt_devices(void) 271 { 272 int i; 273 274 #ifdef CONFIG_CACHE_L2X0 275 void __iomem *base = ioremap_nocache(0xf0100000, 0x1000); 276 if (base) { 277 /* 278 * Early BRESP enable, Shared attribute override enable, 64K*16way 279 * don't call iounmap(base) 280 */ 281 l2x0_init(base, 0x40470000, 0x82000fff); 282 } 283 #endif 284 285 for (i = 0; i < ARRAY_SIZE(scif_platform_data); i++) 286 platform_device_register_data(&platform_bus, "sh-sci", i, 287 &scif_platform_data[i], 288 sizeof(struct plat_sci_port)); 289 290 r8a7778_register_tmu(0); 291 r8a7778_register_tmu(1); 292 } 293 294 void __init r8a7778_add_standard_devices(void) 295 { 296 r8a7778_add_dt_devices(); 297 r8a7778_register_i2c(0); 298 r8a7778_register_i2c(1); 299 r8a7778_register_i2c(2); 300 r8a7778_register_i2c(3); 301 r8a7778_register_hspi(0); 302 r8a7778_register_hspi(1); 303 r8a7778_register_hspi(2); 304 } 305 306 void __init r8a7778_init_late(void) 307 { 308 phy = usb_get_phy(USB_PHY_TYPE_USB2); 309 310 platform_device_register_full(&ehci_info); 311 platform_device_register_full(&ohci_info); 312 } 313 314 static struct renesas_intc_irqpin_config irqpin_platform_data __initdata = { 315 .irq_base = irq_pin(0), /* IRQ0 -> IRQ3 */ 316 .sense_bitfield_width = 2, 317 }; 318 319 static struct resource irqpin_resources[] __initdata = { 320 DEFINE_RES_MEM(0xfe78001c, 4), /* ICR1 */ 321 DEFINE_RES_MEM(0xfe780010, 4), /* INTPRI */ 322 DEFINE_RES_MEM(0xfe780024, 4), /* INTREQ */ 323 DEFINE_RES_MEM(0xfe780044, 4), /* INTMSK0 */ 324 DEFINE_RES_MEM(0xfe780064, 4), /* INTMSKCLR0 */ 325 DEFINE_RES_IRQ(gic_iid(0x3b)), /* IRQ0 */ 326 DEFINE_RES_IRQ(gic_iid(0x3c)), /* IRQ1 */ 327 DEFINE_RES_IRQ(gic_iid(0x3d)), /* IRQ2 */ 328 DEFINE_RES_IRQ(gic_iid(0x3e)), /* IRQ3 */ 329 }; 330 331 void __init r8a7778_init_irq_extpin(int irlm) 332 { 333 void __iomem *icr0 = ioremap_nocache(0xfe780000, PAGE_SIZE); 334 unsigned long tmp; 335 336 if (!icr0) { 337 pr_warn("r8a7778: unable to setup external irq pin mode\n"); 338 return; 339 } 340 341 tmp = ioread32(icr0); 342 if (irlm) 343 tmp |= 1 << 23; /* IRQ0 -> IRQ3 as individual pins */ 344 else 345 tmp &= ~(1 << 23); /* IRL mode - not supported */ 346 tmp |= (1 << 21); /* LVLMODE = 1 */ 347 iowrite32(tmp, icr0); 348 iounmap(icr0); 349 350 if (irlm) 351 platform_device_register_resndata( 352 &platform_bus, "renesas_intc_irqpin", -1, 353 irqpin_resources, ARRAY_SIZE(irqpin_resources), 354 &irqpin_platform_data, sizeof(irqpin_platform_data)); 355 } 356 357 void __init r8a7778_init_delay(void) 358 { 359 shmobile_setup_delay(800, 1, 3); /* Cortex-A9 @ 800MHz */ 360 } 361 362 #ifdef CONFIG_USE_OF 363 #define INT2SMSKCR0 0x82288 /* 0xfe782288 */ 364 #define INT2SMSKCR1 0x8228c /* 0xfe78228c */ 365 366 #define INT2NTSR0 0x00018 /* 0xfe700018 */ 367 #define INT2NTSR1 0x0002c /* 0xfe70002c */ 368 void __init r8a7778_init_irq_dt(void) 369 { 370 void __iomem *base = ioremap_nocache(0xfe700000, 0x00100000); 371 372 BUG_ON(!base); 373 374 irqchip_init(); 375 376 /* route all interrupts to ARM */ 377 __raw_writel(0x73ffffff, base + INT2NTSR0); 378 __raw_writel(0xffffffff, base + INT2NTSR1); 379 380 /* unmask all known interrupts in INTCS2 */ 381 __raw_writel(0x08330773, base + INT2SMSKCR0); 382 __raw_writel(0x00311110, base + INT2SMSKCR1); 383 384 iounmap(base); 385 } 386 387 static const char *r8a7778_compat_dt[] __initdata = { 388 "renesas,r8a7778", 389 NULL, 390 }; 391 392 DT_MACHINE_START(R8A7778_DT, "Generic R8A7778 (Flattened Device Tree)") 393 .init_early = r8a7778_init_delay, 394 .init_irq = r8a7778_init_irq_dt, 395 .dt_compat = r8a7778_compat_dt, 396 .init_late = r8a7778_init_late, 397 MACHINE_END 398 399 #endif /* CONFIG_USE_OF */ 400