linux/arch/arm/mach-shmobile/setup-r8a7778.c
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   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
  56static struct plat_sci_port scif_platform_data[] = {
  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 */
  66static struct resource sh_tmu0_resources[] = {
  67        DEFINE_RES_MEM(0xffd80008, 12),
  68        DEFINE_RES_IRQ(gic_iid(0x40)),
  69};
  70
  71static struct sh_timer_config sh_tmu0_platform_data = {
  72        .name                   = "TMU00",
  73        .channel_offset         = 0x4,
  74        .timer_bit              = 0,
  75        .clockevent_rating      = 200,
  76};
  77
  78static struct resource sh_tmu1_resources[] = {
  79        DEFINE_RES_MEM(0xffd80014, 12),
  80        DEFINE_RES_IRQ(gic_iid(0x41)),
  81};
  82
  83static struct sh_timer_config sh_tmu1_platform_data = {
  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 PHY */
  99static struct resource usb_phy_resources[] __initdata = {
 100        DEFINE_RES_MEM(0xffe70800, 0x100),
 101        DEFINE_RES_MEM(0xffe76000, 0x100),
 102};
 103
 104void __init r8a7778_add_usb_phy_device(struct rcar_phy_platform_data *pdata)
 105{
 106        platform_device_register_resndata(&platform_bus, "rcar_usb_phy", -1,
 107                                          usb_phy_resources,
 108                                          ARRAY_SIZE(usb_phy_resources),
 109                                          pdata, sizeof(*pdata));
 110}
 111
 112/* USB */
 113static struct usb_phy *phy;
 114
 115static int usb_power_on(struct platform_device *pdev)
 116{
 117        if (IS_ERR(phy))
 118                return PTR_ERR(phy);
 119
 120        pm_runtime_enable(&pdev->dev);
 121        pm_runtime_get_sync(&pdev->dev);
 122
 123        usb_phy_init(phy);
 124
 125        return 0;
 126}
 127
 128static void usb_power_off(struct platform_device *pdev)
 129{
 130        if (IS_ERR(phy))
 131                return;
 132
 133        usb_phy_shutdown(phy);
 134
 135        pm_runtime_put_sync(&pdev->dev);
 136        pm_runtime_disable(&pdev->dev);
 137}
 138
 139static int ehci_init_internal_buffer(struct usb_hcd *hcd)
 140{
 141        /*
 142         * Below are recommended values from the datasheet;
 143         * see [USB :: Setting of EHCI Internal Buffer].
 144         */
 145        /* EHCI IP internal buffer setting */
 146        iowrite32(0x00ff0040, hcd->regs + 0x0094);
 147        /* EHCI IP internal buffer enable */
 148        iowrite32(0x00000001, hcd->regs + 0x009C);
 149
 150        return 0;
 151}
 152
 153static struct usb_ehci_pdata ehci_pdata __initdata = {
 154        .power_on       = usb_power_on,
 155        .power_off      = usb_power_off,
 156        .power_suspend  = usb_power_off,
 157        .pre_setup      = ehci_init_internal_buffer,
 158};
 159
 160static struct resource ehci_resources[] __initdata = {
 161        DEFINE_RES_MEM(0xffe70000, 0x400),
 162        DEFINE_RES_IRQ(gic_iid(0x4c)),
 163};
 164
 165static struct usb_ohci_pdata ohci_pdata __initdata = {
 166        .power_on       = usb_power_on,
 167        .power_off      = usb_power_off,
 168        .power_suspend  = usb_power_off,
 169};
 170
 171static struct resource ohci_resources[] __initdata = {
 172        DEFINE_RES_MEM(0xffe70400, 0x400),
 173        DEFINE_RES_IRQ(gic_iid(0x4c)),
 174};
 175
 176#define USB_PLATFORM_INFO(hci)                                  \
 177static struct platform_device_info hci##_info __initdata = {    \
 178        .parent         = &platform_bus,                        \
 179        .name           = #hci "-platform",                     \
 180        .id             = -1,                                   \
 181        .res            = hci##_resources,                      \
 182        .num_res        = ARRAY_SIZE(hci##_resources),          \
 183        .data           = &hci##_pdata,                         \
 184        .size_data      = sizeof(hci##_pdata),                  \
 185        .dma_mask       = DMA_BIT_MASK(32),                     \
 186}
 187
 188USB_PLATFORM_INFO(ehci);
 189USB_PLATFORM_INFO(ohci);
 190
 191/* Ether */
 192static struct resource ether_resources[] = {
 193        DEFINE_RES_MEM(0xfde00000, 0x400),
 194        DEFINE_RES_IRQ(gic_iid(0x89)),
 195};
 196
 197void __init r8a7778_add_ether_device(struct sh_eth_plat_data *pdata)
 198{
 199        platform_device_register_resndata(&platform_bus, "r8a777x-ether", -1,
 200                                          ether_resources,
 201                                          ARRAY_SIZE(ether_resources),
 202                                          pdata, sizeof(*pdata));
 203}
 204
 205/* PFC/GPIO */
 206static struct resource pfc_resources[] = {
 207        DEFINE_RES_MEM(0xfffc0000, 0x118),
 208};
 209
 210#define R8A7778_GPIO(idx)                                               \
 211static struct resource r8a7778_gpio##idx##_resources[] = {              \
 212        DEFINE_RES_MEM(0xffc40000 + 0x1000 * (idx), 0x30),              \
 213        DEFINE_RES_IRQ(gic_iid(0x87)),                                  \
 214};                                                                      \
 215                                                                        \
 216static struct gpio_rcar_config r8a7778_gpio##idx##_platform_data = {    \
 217        .gpio_base      = 32 * (idx),                                   \
 218        .irq_base       = GPIO_IRQ_BASE(idx),                           \
 219        .number_of_pins = 32,                                           \
 220        .pctl_name      = "pfc-r8a7778",                                \
 221}
 222
 223R8A7778_GPIO(0);
 224R8A7778_GPIO(1);
 225R8A7778_GPIO(2);
 226R8A7778_GPIO(3);
 227R8A7778_GPIO(4);
 228
 229#define r8a7778_register_gpio(idx)                              \
 230        platform_device_register_resndata(                      \
 231                &platform_bus, "gpio_rcar", idx,                \
 232                r8a7778_gpio##idx##_resources,                  \
 233                ARRAY_SIZE(r8a7778_gpio##idx##_resources),      \
 234                &r8a7778_gpio##idx##_platform_data,             \
 235                sizeof(r8a7778_gpio##idx##_platform_data))
 236
 237void __init r8a7778_pinmux_init(void)
 238{
 239        platform_device_register_simple(
 240                "pfc-r8a7778", -1,
 241                pfc_resources,
 242                ARRAY_SIZE(pfc_resources));
 243
 244        r8a7778_register_gpio(0);
 245        r8a7778_register_gpio(1);
 246        r8a7778_register_gpio(2);
 247        r8a7778_register_gpio(3);
 248        r8a7778_register_gpio(4);
 249};
 250
 251/* SDHI */
 252static struct resource sdhi_resources[] = {
 253        /* SDHI0 */
 254        DEFINE_RES_MEM(0xFFE4C000, 0x100),
 255        DEFINE_RES_IRQ(gic_iid(0x77)),
 256        /* SDHI1 */
 257        DEFINE_RES_MEM(0xFFE4D000, 0x100),
 258        DEFINE_RES_IRQ(gic_iid(0x78)),
 259        /* SDHI2 */
 260        DEFINE_RES_MEM(0xFFE4F000, 0x100),
 261        DEFINE_RES_IRQ(gic_iid(0x76)),
 262};
 263
 264void __init r8a7778_sdhi_init(int id,
 265                              struct sh_mobile_sdhi_info *info)
 266{
 267        BUG_ON(id < 0 || id > 2);
 268
 269        platform_device_register_resndata(
 270                &platform_bus, "sh_mobile_sdhi", id,
 271                sdhi_resources + (2 * id), 2,
 272                info, sizeof(*info));
 273}
 274
 275/* I2C */
 276static struct resource i2c_resources[] __initdata = {
 277        /* I2C0 */
 278        DEFINE_RES_MEM(0xffc70000, 0x1000),
 279        DEFINE_RES_IRQ(gic_iid(0x63)),
 280        /* I2C1 */
 281        DEFINE_RES_MEM(0xffc71000, 0x1000),
 282        DEFINE_RES_IRQ(gic_iid(0x6e)),
 283        /* I2C2 */
 284        DEFINE_RES_MEM(0xffc72000, 0x1000),
 285        DEFINE_RES_IRQ(gic_iid(0x6c)),
 286        /* I2C3 */
 287        DEFINE_RES_MEM(0xffc73000, 0x1000),
 288        DEFINE_RES_IRQ(gic_iid(0x6d)),
 289};
 290
 291void __init r8a7778_add_i2c_device(int id)
 292{
 293        BUG_ON(id < 0 || id > 3);
 294
 295        platform_device_register_simple(
 296                "i2c-rcar", id,
 297                i2c_resources + (2 * id), 2);
 298}
 299
 300/* HSPI */
 301static struct resource hspi_resources[] __initdata = {
 302        /* HSPI0 */
 303        DEFINE_RES_MEM(0xfffc7000, 0x18),
 304        DEFINE_RES_IRQ(gic_iid(0x5f)),
 305        /* HSPI1 */
 306        DEFINE_RES_MEM(0xfffc8000, 0x18),
 307        DEFINE_RES_IRQ(gic_iid(0x74)),
 308        /* HSPI2 */
 309        DEFINE_RES_MEM(0xfffc6000, 0x18),
 310        DEFINE_RES_IRQ(gic_iid(0x75)),
 311};
 312
 313void __init r8a7778_add_hspi_device(int id)
 314{
 315        BUG_ON(id < 0 || id > 2);
 316
 317        platform_device_register_simple(
 318                "sh-hspi", id,
 319                hspi_resources + (2 * id), 2);
 320}
 321
 322/* MMC */
 323static struct resource mmc_resources[] __initdata = {
 324        DEFINE_RES_MEM(0xffe4e000, 0x100),
 325        DEFINE_RES_IRQ(gic_iid(0x5d)),
 326};
 327
 328void __init r8a7778_add_mmc_device(struct sh_mmcif_plat_data *info)
 329{
 330        platform_device_register_resndata(
 331                &platform_bus, "sh_mmcif", -1,
 332                mmc_resources, ARRAY_SIZE(mmc_resources),
 333                info, sizeof(*info));
 334}
 335
 336void __init r8a7778_add_standard_devices(void)
 337{
 338        int i;
 339
 340#ifdef CONFIG_CACHE_L2X0
 341        void __iomem *base = ioremap_nocache(0xf0100000, 0x1000);
 342        if (base) {
 343                /*
 344                 * Early BRESP enable, Shared attribute override enable, 64K*16way
 345                 * don't call iounmap(base)
 346                 */
 347                l2x0_init(base, 0x40470000, 0x82000fff);
 348        }
 349#endif
 350
 351        for (i = 0; i < ARRAY_SIZE(scif_platform_data); i++)
 352                platform_device_register_data(&platform_bus, "sh-sci", i,
 353                                              &scif_platform_data[i],
 354                                              sizeof(struct plat_sci_port));
 355
 356        r8a7778_register_tmu(0);
 357        r8a7778_register_tmu(1);
 358}
 359
 360void __init r8a7778_init_late(void)
 361{
 362        phy = usb_get_phy(USB_PHY_TYPE_USB2);
 363
 364        platform_device_register_full(&ehci_info);
 365        platform_device_register_full(&ohci_info);
 366}
 367
 368static struct renesas_intc_irqpin_config irqpin_platform_data = {
 369        .irq_base = irq_pin(0), /* IRQ0 -> IRQ3 */
 370        .sense_bitfield_width = 2,
 371};
 372
 373static struct resource irqpin_resources[] = {
 374        DEFINE_RES_MEM(0xfe78001c, 4), /* ICR1 */
 375        DEFINE_RES_MEM(0xfe780010, 4), /* INTPRI */
 376        DEFINE_RES_MEM(0xfe780024, 4), /* INTREQ */
 377        DEFINE_RES_MEM(0xfe780044, 4), /* INTMSK0 */
 378        DEFINE_RES_MEM(0xfe780064, 4), /* INTMSKCLR0 */
 379        DEFINE_RES_IRQ(gic_iid(0x3b)), /* IRQ0 */
 380        DEFINE_RES_IRQ(gic_iid(0x3c)), /* IRQ1 */
 381        DEFINE_RES_IRQ(gic_iid(0x3d)), /* IRQ2 */
 382        DEFINE_RES_IRQ(gic_iid(0x3e)), /* IRQ3 */
 383};
 384
 385void __init r8a7778_init_irq_extpin(int irlm)
 386{
 387        void __iomem *icr0 = ioremap_nocache(0xfe780000, PAGE_SIZE);
 388        unsigned long tmp;
 389
 390        if (!icr0) {
 391                pr_warn("r8a7778: unable to setup external irq pin mode\n");
 392                return;
 393        }
 394
 395        tmp = ioread32(icr0);
 396        if (irlm)
 397                tmp |= 1 << 23; /* IRQ0 -> IRQ3 as individual pins */
 398        else
 399                tmp &= ~(1 << 23); /* IRL mode - not supported */
 400        tmp |= (1 << 21); /* LVLMODE = 1 */
 401        iowrite32(tmp, icr0);
 402        iounmap(icr0);
 403
 404        if (irlm)
 405                platform_device_register_resndata(
 406                        &platform_bus, "renesas_intc_irqpin", -1,
 407                        irqpin_resources, ARRAY_SIZE(irqpin_resources),
 408                        &irqpin_platform_data, sizeof(irqpin_platform_data));
 409}
 410
 411#define INT2SMSKCR0     0x82288 /* 0xfe782288 */
 412#define INT2SMSKCR1     0x8228c /* 0xfe78228c */
 413
 414#define INT2NTSR0       0x00018 /* 0xfe700018 */
 415#define INT2NTSR1       0x0002c /* 0xfe70002c */
 416static void __init r8a7778_init_irq_common(void)
 417{
 418        void __iomem *base = ioremap_nocache(0xfe700000, 0x00100000);
 419
 420        BUG_ON(!base);
 421
 422        /* route all interrupts to ARM */
 423        __raw_writel(0x73ffffff, base + INT2NTSR0);
 424        __raw_writel(0xffffffff, base + INT2NTSR1);
 425
 426        /* unmask all known interrupts in INTCS2 */
 427        __raw_writel(0x08330773, base + INT2SMSKCR0);
 428        __raw_writel(0x00311110, base + INT2SMSKCR1);
 429
 430        iounmap(base);
 431}
 432
 433void __init r8a7778_init_irq(void)
 434{
 435        void __iomem *gic_dist_base;
 436        void __iomem *gic_cpu_base;
 437
 438        gic_dist_base = ioremap_nocache(0xfe438000, PAGE_SIZE);
 439        gic_cpu_base  = ioremap_nocache(0xfe430000, PAGE_SIZE);
 440        BUG_ON(!gic_dist_base || !gic_cpu_base);
 441
 442        /* use GIC to handle interrupts */
 443        gic_init(0, 29, gic_dist_base, gic_cpu_base);
 444
 445        r8a7778_init_irq_common();
 446}
 447
 448void __init r8a7778_init_delay(void)
 449{
 450        shmobile_setup_delay(800, 1, 3); /* Cortex-A9 @ 800MHz */
 451}
 452
 453#ifdef CONFIG_USE_OF
 454void __init r8a7778_init_irq_dt(void)
 455{
 456        irqchip_init();
 457        r8a7778_init_irq_common();
 458}
 459
 460static const struct of_dev_auxdata r8a7778_auxdata_lookup[] __initconst = {
 461        {},
 462};
 463
 464void __init r8a7778_add_standard_devices_dt(void)
 465{
 466        of_platform_populate(NULL, of_default_bus_match_table,
 467                             r8a7778_auxdata_lookup, NULL);
 468}
 469
 470static const char *r8a7778_compat_dt[] __initdata = {
 471        "renesas,r8a7778",
 472        NULL,
 473};
 474
 475DT_MACHINE_START(R8A7778_DT, "Generic R8A7778 (Flattened Device Tree)")
 476        .init_early     = r8a7778_init_delay,
 477        .init_irq       = r8a7778_init_irq_dt,
 478        .init_machine   = r8a7778_add_standard_devices_dt,
 479        .init_time      = shmobile_timer_init,
 480        .dt_compat      = r8a7778_compat_dt,
 481        .init_late      = r8a7778_init_late,
 482MACHINE_END
 483
 484#endif /* CONFIG_USE_OF */
 485