linux/arch/sh/kernel/cpu/sh4/setup-sh7750.c
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   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * SH7091/SH7750/SH7750S/SH7750R/SH7751/SH7751R Setup
   4 *
   5 *  Copyright (C) 2006  Paul Mundt
   6 *  Copyright (C) 2006  Jamie Lenehan
   7 */
   8#include <linux/platform_device.h>
   9#include <linux/init.h>
  10#include <linux/serial.h>
  11#include <linux/io.h>
  12#include <linux/sh_timer.h>
  13#include <linux/sh_intc.h>
  14#include <linux/serial_sci.h>
  15#include <generated/machtypes.h>
  16#include <asm/platform_early.h>
  17
  18static struct resource rtc_resources[] = {
  19        [0] = {
  20                .start  = 0xffc80000,
  21                .end    = 0xffc80000 + 0x58 - 1,
  22                .flags  = IORESOURCE_IO,
  23        },
  24        [1] = {
  25                /* Shared Period/Carry/Alarm IRQ */
  26                .start  = evt2irq(0x480),
  27                .flags  = IORESOURCE_IRQ,
  28        },
  29};
  30
  31static struct platform_device rtc_device = {
  32        .name           = "sh-rtc",
  33        .id             = -1,
  34        .num_resources  = ARRAY_SIZE(rtc_resources),
  35        .resource       = rtc_resources,
  36};
  37
  38static struct plat_sci_port sci_platform_data = {
  39        .type           = PORT_SCI,
  40};
  41
  42static struct resource sci_resources[] = {
  43        DEFINE_RES_MEM(0xffe00000, 0x20),
  44        DEFINE_RES_IRQ(evt2irq(0x4e0)),
  45};
  46
  47static struct platform_device sci_device = {
  48        .name           = "sh-sci",
  49        .id             = 0,
  50        .resource       = sci_resources,
  51        .num_resources  = ARRAY_SIZE(sci_resources),
  52        .dev            = {
  53                .platform_data  = &sci_platform_data,
  54        },
  55};
  56
  57static struct plat_sci_port scif_platform_data = {
  58        .scscr          = SCSCR_REIE,
  59        .type           = PORT_SCIF,
  60};
  61
  62static struct resource scif_resources[] = {
  63        DEFINE_RES_MEM(0xffe80000, 0x100),
  64        DEFINE_RES_IRQ(evt2irq(0x700)),
  65};
  66
  67static struct platform_device scif_device = {
  68        .name           = "sh-sci",
  69        .id             = 1,
  70        .resource       = scif_resources,
  71        .num_resources  = ARRAY_SIZE(scif_resources),
  72        .dev            = {
  73                .platform_data  = &scif_platform_data,
  74        },
  75};
  76
  77static struct sh_timer_config tmu0_platform_data = {
  78        .channels_mask = 7,
  79};
  80
  81static struct resource tmu0_resources[] = {
  82        DEFINE_RES_MEM(0xffd80000, 0x30),
  83        DEFINE_RES_IRQ(evt2irq(0x400)),
  84        DEFINE_RES_IRQ(evt2irq(0x420)),
  85        DEFINE_RES_IRQ(evt2irq(0x440)),
  86};
  87
  88static struct platform_device tmu0_device = {
  89        .name           = "sh-tmu",
  90        .id             = 0,
  91        .dev = {
  92                .platform_data  = &tmu0_platform_data,
  93        },
  94        .resource       = tmu0_resources,
  95        .num_resources  = ARRAY_SIZE(tmu0_resources),
  96};
  97
  98/* SH7750R, SH7751 and SH7751R all have two extra timer channels */
  99#if defined(CONFIG_CPU_SUBTYPE_SH7750R) || \
 100        defined(CONFIG_CPU_SUBTYPE_SH7751) || \
 101        defined(CONFIG_CPU_SUBTYPE_SH7751R)
 102
 103static struct sh_timer_config tmu1_platform_data = {
 104        .channels_mask = 3,
 105};
 106
 107static struct resource tmu1_resources[] = {
 108        DEFINE_RES_MEM(0xfe100000, 0x20),
 109        DEFINE_RES_IRQ(evt2irq(0xb00)),
 110        DEFINE_RES_IRQ(evt2irq(0xb80)),
 111};
 112
 113static struct platform_device tmu1_device = {
 114        .name           = "sh-tmu",
 115        .id             = 1,
 116        .dev = {
 117                .platform_data  = &tmu1_platform_data,
 118        },
 119        .resource       = tmu1_resources,
 120        .num_resources  = ARRAY_SIZE(tmu1_resources),
 121};
 122
 123#endif
 124
 125static struct platform_device *sh7750_devices[] __initdata = {
 126        &rtc_device,
 127        &tmu0_device,
 128#if defined(CONFIG_CPU_SUBTYPE_SH7750R) || \
 129        defined(CONFIG_CPU_SUBTYPE_SH7751) || \
 130        defined(CONFIG_CPU_SUBTYPE_SH7751R)
 131        &tmu1_device,
 132#endif
 133};
 134
 135static int __init sh7750_devices_setup(void)
 136{
 137        if (mach_is_rts7751r2d()) {
 138                platform_device_register(&scif_device);
 139        } else {
 140                platform_device_register(&sci_device);
 141                platform_device_register(&scif_device);
 142        }
 143
 144        return platform_add_devices(sh7750_devices,
 145                                    ARRAY_SIZE(sh7750_devices));
 146}
 147arch_initcall(sh7750_devices_setup);
 148
 149static struct platform_device *sh7750_early_devices[] __initdata = {
 150        &tmu0_device,
 151#if defined(CONFIG_CPU_SUBTYPE_SH7750R) || \
 152        defined(CONFIG_CPU_SUBTYPE_SH7751) || \
 153        defined(CONFIG_CPU_SUBTYPE_SH7751R)
 154        &tmu1_device,
 155#endif
 156};
 157
 158void __init plat_early_device_setup(void)
 159{
 160        struct platform_device *dev[1];
 161
 162        if (mach_is_rts7751r2d()) {
 163                scif_platform_data.scscr |= SCSCR_CKE1;
 164                dev[0] = &scif_device;
 165                sh_early_platform_add_devices(dev, 1);
 166        } else {
 167                dev[0] = &sci_device;
 168                sh_early_platform_add_devices(dev, 1);
 169                dev[0] = &scif_device;
 170                sh_early_platform_add_devices(dev, 1);
 171        }
 172
 173        sh_early_platform_add_devices(sh7750_early_devices,
 174                                   ARRAY_SIZE(sh7750_early_devices));
 175}
 176
 177enum {
 178        UNUSED = 0,
 179
 180        /* interrupt sources */
 181        IRL0, IRL1, IRL2, IRL3, /* only IRLM mode supported */
 182        HUDI, GPIOI, DMAC,
 183        PCIC0_PCISERR, PCIC1_PCIERR, PCIC1_PCIPWDWN, PCIC1_PCIPWON,
 184        PCIC1_PCIDMA0, PCIC1_PCIDMA1, PCIC1_PCIDMA2, PCIC1_PCIDMA3,
 185        TMU3, TMU4, TMU0, TMU1, TMU2, RTC, SCI1, SCIF, WDT, REF,
 186
 187        /* interrupt groups */
 188        PCIC1,
 189};
 190
 191static struct intc_vect vectors[] __initdata = {
 192        INTC_VECT(HUDI, 0x600), INTC_VECT(GPIOI, 0x620),
 193        INTC_VECT(TMU0, 0x400), INTC_VECT(TMU1, 0x420),
 194        INTC_VECT(TMU2, 0x440), INTC_VECT(TMU2, 0x460),
 195        INTC_VECT(RTC, 0x480), INTC_VECT(RTC, 0x4a0),
 196        INTC_VECT(RTC, 0x4c0),
 197        INTC_VECT(SCI1, 0x4e0), INTC_VECT(SCI1, 0x500),
 198        INTC_VECT(SCI1, 0x520), INTC_VECT(SCI1, 0x540),
 199        INTC_VECT(SCIF, 0x700), INTC_VECT(SCIF, 0x720),
 200        INTC_VECT(SCIF, 0x740), INTC_VECT(SCIF, 0x760),
 201        INTC_VECT(WDT, 0x560),
 202        INTC_VECT(REF, 0x580), INTC_VECT(REF, 0x5a0),
 203};
 204
 205static struct intc_prio_reg prio_registers[] __initdata = {
 206        { 0xffd00004, 0, 16, 4, /* IPRA */ { TMU0, TMU1, TMU2, RTC } },
 207        { 0xffd00008, 0, 16, 4, /* IPRB */ { WDT, REF, SCI1, 0 } },
 208        { 0xffd0000c, 0, 16, 4, /* IPRC */ { GPIOI, DMAC, SCIF, HUDI } },
 209        { 0xffd00010, 0, 16, 4, /* IPRD */ { IRL0, IRL1, IRL2, IRL3 } },
 210        { 0xfe080000, 0, 32, 4, /* INTPRI00 */ { 0, 0, 0, 0,
 211                                                 TMU4, TMU3,
 212                                                 PCIC1, PCIC0_PCISERR } },
 213};
 214
 215static DECLARE_INTC_DESC(intc_desc, "sh7750", vectors, NULL,
 216                         NULL, prio_registers, NULL);
 217
 218/* SH7750, SH7750S, SH7751 and SH7091 all have 4-channel DMA controllers */
 219#if defined(CONFIG_CPU_SUBTYPE_SH7750) || \
 220        defined(CONFIG_CPU_SUBTYPE_SH7750S) || \
 221        defined(CONFIG_CPU_SUBTYPE_SH7751) || \
 222        defined(CONFIG_CPU_SUBTYPE_SH7091)
 223static struct intc_vect vectors_dma4[] __initdata = {
 224        INTC_VECT(DMAC, 0x640), INTC_VECT(DMAC, 0x660),
 225        INTC_VECT(DMAC, 0x680), INTC_VECT(DMAC, 0x6a0),
 226        INTC_VECT(DMAC, 0x6c0),
 227};
 228
 229static DECLARE_INTC_DESC(intc_desc_dma4, "sh7750_dma4",
 230                         vectors_dma4, NULL,
 231                         NULL, prio_registers, NULL);
 232#endif
 233
 234/* SH7750R and SH7751R both have 8-channel DMA controllers */
 235#if defined(CONFIG_CPU_SUBTYPE_SH7750R) || defined(CONFIG_CPU_SUBTYPE_SH7751R)
 236static struct intc_vect vectors_dma8[] __initdata = {
 237        INTC_VECT(DMAC, 0x640), INTC_VECT(DMAC, 0x660),
 238        INTC_VECT(DMAC, 0x680), INTC_VECT(DMAC, 0x6a0),
 239        INTC_VECT(DMAC, 0x780), INTC_VECT(DMAC, 0x7a0),
 240        INTC_VECT(DMAC, 0x7c0), INTC_VECT(DMAC, 0x7e0),
 241        INTC_VECT(DMAC, 0x6c0),
 242};
 243
 244static DECLARE_INTC_DESC(intc_desc_dma8, "sh7750_dma8",
 245                         vectors_dma8, NULL,
 246                         NULL, prio_registers, NULL);
 247#endif
 248
 249/* SH7750R, SH7751 and SH7751R all have two extra timer channels */
 250#if defined(CONFIG_CPU_SUBTYPE_SH7750R) || \
 251        defined(CONFIG_CPU_SUBTYPE_SH7751) || \
 252        defined(CONFIG_CPU_SUBTYPE_SH7751R)
 253static struct intc_vect vectors_tmu34[] __initdata = {
 254        INTC_VECT(TMU3, 0xb00), INTC_VECT(TMU4, 0xb80),
 255};
 256
 257static struct intc_mask_reg mask_registers[] __initdata = {
 258        { 0xfe080040, 0xfe080060, 32, /* INTMSK00 / INTMSKCLR00 */
 259          { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 260            0, 0, 0, 0, 0, 0, TMU4, TMU3,
 261            PCIC1_PCIERR, PCIC1_PCIPWDWN, PCIC1_PCIPWON,
 262            PCIC1_PCIDMA0, PCIC1_PCIDMA1, PCIC1_PCIDMA2,
 263            PCIC1_PCIDMA3, PCIC0_PCISERR } },
 264};
 265
 266static DECLARE_INTC_DESC(intc_desc_tmu34, "sh7750_tmu34",
 267                         vectors_tmu34, NULL,
 268                         mask_registers, prio_registers, NULL);
 269#endif
 270
 271/* SH7750S, SH7750R, SH7751 and SH7751R all have IRLM priority registers */
 272static struct intc_vect vectors_irlm[] __initdata = {
 273        INTC_VECT(IRL0, 0x240), INTC_VECT(IRL1, 0x2a0),
 274        INTC_VECT(IRL2, 0x300), INTC_VECT(IRL3, 0x360),
 275};
 276
 277static DECLARE_INTC_DESC(intc_desc_irlm, "sh7750_irlm", vectors_irlm, NULL,
 278                         NULL, prio_registers, NULL);
 279
 280/* SH7751 and SH7751R both have PCI */
 281#if defined(CONFIG_CPU_SUBTYPE_SH7751) || defined(CONFIG_CPU_SUBTYPE_SH7751R)
 282static struct intc_vect vectors_pci[] __initdata = {
 283        INTC_VECT(PCIC0_PCISERR, 0xa00), INTC_VECT(PCIC1_PCIERR, 0xae0),
 284        INTC_VECT(PCIC1_PCIPWDWN, 0xac0), INTC_VECT(PCIC1_PCIPWON, 0xaa0),
 285        INTC_VECT(PCIC1_PCIDMA0, 0xa80), INTC_VECT(PCIC1_PCIDMA1, 0xa60),
 286        INTC_VECT(PCIC1_PCIDMA2, 0xa40), INTC_VECT(PCIC1_PCIDMA3, 0xa20),
 287};
 288
 289static struct intc_group groups_pci[] __initdata = {
 290        INTC_GROUP(PCIC1, PCIC1_PCIERR, PCIC1_PCIPWDWN, PCIC1_PCIPWON,
 291                   PCIC1_PCIDMA0, PCIC1_PCIDMA1, PCIC1_PCIDMA2, PCIC1_PCIDMA3),
 292};
 293
 294static DECLARE_INTC_DESC(intc_desc_pci, "sh7750_pci", vectors_pci, groups_pci,
 295                         mask_registers, prio_registers, NULL);
 296#endif
 297
 298#if defined(CONFIG_CPU_SUBTYPE_SH7750) || \
 299        defined(CONFIG_CPU_SUBTYPE_SH7750S) || \
 300        defined(CONFIG_CPU_SUBTYPE_SH7091)
 301void __init plat_irq_setup(void)
 302{
 303        /*
 304         * same vectors for SH7750, SH7750S and SH7091 except for IRLM,
 305         * see below..
 306         */
 307        register_intc_controller(&intc_desc);
 308        register_intc_controller(&intc_desc_dma4);
 309}
 310#endif
 311
 312#if defined(CONFIG_CPU_SUBTYPE_SH7750R)
 313void __init plat_irq_setup(void)
 314{
 315        register_intc_controller(&intc_desc);
 316        register_intc_controller(&intc_desc_dma8);
 317        register_intc_controller(&intc_desc_tmu34);
 318}
 319#endif
 320
 321#if defined(CONFIG_CPU_SUBTYPE_SH7751)
 322void __init plat_irq_setup(void)
 323{
 324        register_intc_controller(&intc_desc);
 325        register_intc_controller(&intc_desc_dma4);
 326        register_intc_controller(&intc_desc_tmu34);
 327        register_intc_controller(&intc_desc_pci);
 328}
 329#endif
 330
 331#if defined(CONFIG_CPU_SUBTYPE_SH7751R)
 332void __init plat_irq_setup(void)
 333{
 334        register_intc_controller(&intc_desc);
 335        register_intc_controller(&intc_desc_dma8);
 336        register_intc_controller(&intc_desc_tmu34);
 337        register_intc_controller(&intc_desc_pci);
 338}
 339#endif
 340
 341#define INTC_ICR        0xffd00000UL
 342#define INTC_ICR_IRLM   (1<<7)
 343
 344void __init plat_irq_setup_pins(int mode)
 345{
 346#if defined(CONFIG_CPU_SUBTYPE_SH7750) || defined(CONFIG_CPU_SUBTYPE_SH7091)
 347        BUG(); /* impossible to mask interrupts on SH7750 and SH7091 */
 348        return;
 349#endif
 350
 351        switch (mode) {
 352        case IRQ_MODE_IRQ: /* individual interrupt mode for IRL3-0 */
 353                __raw_writew(__raw_readw(INTC_ICR) | INTC_ICR_IRLM, INTC_ICR);
 354                register_intc_controller(&intc_desc_irlm);
 355                break;
 356        default:
 357                BUG();
 358        }
 359}
 360