arch/sh/kernel/cpu/sh4/setup-sh7750.c

   1 /*
   2  * SH7750/SH7751 Setup
   3  *
   4  *  Copyright (C) 2006  Paul Mundt
   5  *  Copyright (C) 2006  Jamie Lenehan
   6  *
   7  * This file is subject to the terms and conditions of the GNU General Public
   8  * License.  See the file "COPYING" in the main directory of this archive
   9  * for more details.
  10  */
  11 #include <linux/platform_device.h>
  12 #include <linux/init.h>
  13 #include <linux/serial.h>
  14 #include <linux/io.h>
  15 #include <linux/serial_sci.h>
  16
  17 static struct resource rtc_resources[] = {
  18         [0] = {
  19                 .start  = 0xffc80000,
  20                 .end    = 0xffc80000 + 0x58 - 1,
  21                 .flags  = IORESOURCE_IO,
  22         },
  23         [1] = {
  24                 /* Period IRQ */
  25                 .start  = 21,
  26                 .flags  = IORESOURCE_IRQ,
  27         },
  28         [2] = {
  29                 /* Carry IRQ */
  30                 .start  = 22,
  31                 .flags  = IORESOURCE_IRQ,
  32         },
  33         [3] = {
  34                 /* Alarm IRQ */
  35                 .start  = 20,
  36                 .flags  = IORESOURCE_IRQ,
  37         },
  38 };
  39
  40 static struct platform_device rtc_device = {
  41         .name           = "sh-rtc",
  42         .id             = -1,
  43         .num_resources  = ARRAY_SIZE(rtc_resources),
  44         .resource       = rtc_resources,
  45 };
  46
  47 static struct plat_sci_port sci_platform_data[] = {
  48         {
  49 #ifndef CONFIG_SH_RTS7751R2D
  50                 .mapbase        = 0xffe00000,
  51                 .flags          = UPF_BOOT_AUTOCONF,
  52                 .type           = PORT_SCI,
  53                 .irqs           = { 23, 24, 25, 0 },
  54         }, {
  55 #endif
  56                 .mapbase        = 0xffe80000,
  57                 .flags          = UPF_BOOT_AUTOCONF,
  58                 .type           = PORT_SCIF,
  59                 .irqs           = { 40, 41, 43, 42 },
  60         }, {
  61                 .flags = 0,
  62         }
  63 };
  64
  65 static struct platform_device sci_device = {
  66         .name           = "sh-sci",
  67         .id             = -1,
  68         .dev            = {
  69                 .platform_data  = sci_platform_data,
  70         },
  71 };
  72
  73 static struct platform_device *sh7750_devices[] __initdata = {
  74         &rtc_device,
  75         &sci_device,
  76 };
  77
  78 static int __init sh7750_devices_setup(void)
  79 {
  80         return platform_add_devices(sh7750_devices,
  81                                     ARRAY_SIZE(sh7750_devices));
  82 }
  83 __initcall(sh7750_devices_setup);
  84
  85 enum {
  86         UNUSED = 0,
  87
  88         /* interrupt sources */
  89         IRL0, IRL1, IRL2, IRL3, /* only IRLM mode supported */
  90         HUDI, GPIOI,
  91         DMAC_DMTE0, DMAC_DMTE1, DMAC_DMTE2, DMAC_DMTE3,
  92         DMAC_DMTE4, DMAC_DMTE5, DMAC_DMTE6, DMAC_DMTE7,
  93         DMAC_DMAE,
  94         PCIC0_PCISERR, PCIC1_PCIERR, PCIC1_PCIPWDWN, PCIC1_PCIPWON,
  95         PCIC1_PCIDMA0, PCIC1_PCIDMA1, PCIC1_PCIDMA2, PCIC1_PCIDMA3,
  96         TMU3, TMU4, TMU0, TMU1, TMU2_TUNI, TMU2_TICPI,
  97         RTC_ATI, RTC_PRI, RTC_CUI,
  98         SCI1_ERI, SCI1_RXI, SCI1_TXI, SCI1_TEI,
  99         SCIF_ERI, SCIF_RXI, SCIF_BRI, SCIF_TXI,
 100         WDT,
 101         REF_RCMI, REF_ROVI,
 102
 103         /* interrupt groups */
 104         DMAC, PCIC1, TMU2, RTC, SCI1, SCIF, REF,
 105 };
 106
 107 static struct intc_vect vectors[] __initdata = {
 108         INTC_VECT(HUDI, 0x600), INTC_VECT(GPIOI, 0x620),
 109         INTC_VECT(TMU0, 0x400), INTC_VECT(TMU1, 0x420),
 110         INTC_VECT(TMU2_TUNI, 0x440), INTC_VECT(TMU2_TICPI, 0x460),
 111         INTC_VECT(RTC_ATI, 0x480), INTC_VECT(RTC_PRI, 0x4a0),
 112         INTC_VECT(RTC_CUI, 0x4c0),
 113         INTC_VECT(SCI1_ERI, 0x4e0), INTC_VECT(SCI1_RXI, 0x500),
 114         INTC_VECT(SCI1_TXI, 0x520), INTC_VECT(SCI1_TEI, 0x540),
 115         INTC_VECT(SCIF_ERI, 0x700), INTC_VECT(SCIF_RXI, 0x720),
 116         INTC_VECT(SCIF_BRI, 0x740), INTC_VECT(SCIF_TXI, 0x760),
 117         INTC_VECT(WDT, 0x560),
 118         INTC_VECT(REF_RCMI, 0x580), INTC_VECT(REF_ROVI, 0x5a0),
 119 };
 120
 121 static struct intc_group groups[] __initdata = {
 122         INTC_GROUP(TMU2, TMU2_TUNI, TMU2_TICPI),
 123         INTC_GROUP(RTC, RTC_ATI, RTC_PRI, RTC_CUI),
 124         INTC_GROUP(SCI1, SCI1_ERI, SCI1_RXI, SCI1_TXI, SCI1_TEI),
 125         INTC_GROUP(SCIF, SCIF_ERI, SCIF_RXI, SCIF_BRI, SCIF_TXI),
 126         INTC_GROUP(REF, REF_RCMI, REF_ROVI),
 127 };
 128
 129 static struct intc_prio_reg prio_registers[] __initdata = {
 130         { 0xffd00004, 0, 16, 4, /* IPRA */ { TMU0, TMU1, TMU2, RTC } },
 131         { 0xffd00008, 0, 16, 4, /* IPRB */ { WDT, REF, SCI1, 0 } },
 132         { 0xffd0000c, 0, 16, 4, /* IPRC */ { GPIOI, DMAC, SCIF, HUDI } },
 133         { 0xffd00010, 0, 16, 4, /* IPRD */ { IRL0, IRL1, IRL2, IRL3 } },
 134         { 0xfe080000, 0, 32, 4, /* INTPRI00 */ { 0, 0, 0, 0,
 135                                                  TMU4, TMU3,
 136                                                  PCIC1, PCIC0_PCISERR } },
 137 };
 138
 139 static DECLARE_INTC_DESC(intc_desc, "sh7750", vectors, groups,
 140                          NULL, prio_registers, NULL);
 141
 142 /* SH7750, SH7750S, SH7751 and SH7091 all have 4-channel DMA controllers */
 143 #if defined(CONFIG_CPU_SUBTYPE_SH7750) || \
 144         defined(CONFIG_CPU_SUBTYPE_SH7750S) || \
 145         defined(CONFIG_CPU_SUBTYPE_SH7751) || \
 146         defined(CONFIG_CPU_SUBTYPE_SH7091)
 147 static struct intc_vect vectors_dma4[] __initdata = {
 148         INTC_VECT(DMAC_DMTE0, 0x640), INTC_VECT(DMAC_DMTE1, 0x660),
 149         INTC_VECT(DMAC_DMTE2, 0x680), INTC_VECT(DMAC_DMTE3, 0x6a0),
 150         INTC_VECT(DMAC_DMAE, 0x6c0),
 151 };
 152
 153 static struct intc_group groups_dma4[] __initdata = {
 154         INTC_GROUP(DMAC, DMAC_DMTE0, DMAC_DMTE1, DMAC_DMTE2,
 155                    DMAC_DMTE3, DMAC_DMAE),
 156 };
 157
 158 static DECLARE_INTC_DESC(intc_desc_dma4, "sh7750_dma4",
 159                          vectors_dma4, groups_dma4,
 160                          NULL, prio_registers, NULL);
 161 #endif
 162
 163 /* SH7750R and SH7751R both have 8-channel DMA controllers */
 164 #if defined(CONFIG_CPU_SUBTYPE_SH7750R) || defined(CONFIG_CPU_SUBTYPE_SH7751R)
 165 static struct intc_vect vectors_dma8[] __initdata = {
 166         INTC_VECT(DMAC_DMTE0, 0x640), INTC_VECT(DMAC_DMTE1, 0x660),
 167         INTC_VECT(DMAC_DMTE2, 0x680), INTC_VECT(DMAC_DMTE3, 0x6a0),
 168         INTC_VECT(DMAC_DMTE4, 0x780), INTC_VECT(DMAC_DMTE5, 0x7a0),
 169         INTC_VECT(DMAC_DMTE6, 0x7c0), INTC_VECT(DMAC_DMTE7, 0x7e0),
 170         INTC_VECT(DMAC_DMAE, 0x6c0),
 171 };
 172
 173 static struct intc_group groups_dma8[] __initdata = {
 174         INTC_GROUP(DMAC, DMAC_DMTE0, DMAC_DMTE1, DMAC_DMTE2,
 175                    DMAC_DMTE3, DMAC_DMTE4, DMAC_DMTE5,
 176                    DMAC_DMTE6, DMAC_DMTE7, DMAC_DMAE),
 177 };
 178
 179 static DECLARE_INTC_DESC(intc_desc_dma8, "sh7750_dma8",
 180                          vectors_dma8, groups_dma8,
 181                          NULL, prio_registers, NULL);
 182 #endif
 183
 184 /* SH7750R, SH7751 and SH7751R all have two extra timer channels */
 185 #if defined(CONFIG_CPU_SUBTYPE_SH7750R) || \
 186         defined(CONFIG_CPU_SUBTYPE_SH7751) || \
 187         defined(CONFIG_CPU_SUBTYPE_SH7751R)
 188 static struct intc_vect vectors_tmu34[] __initdata = {
 189         INTC_VECT(TMU3, 0xb00), INTC_VECT(TMU4, 0xb80),
 190 };
 191
 192 static struct intc_mask_reg mask_registers[] __initdata = {
 193         { 0xfe080040, 0xfe080060, 32, /* INTMSK00 / INTMSKCLR00 */
 194           { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 195             0, 0, 0, 0, 0, 0, TMU4, TMU3,
 196             PCIC1_PCIERR, PCIC1_PCIPWDWN, PCIC1_PCIPWON,
 197             PCIC1_PCIDMA0, PCIC1_PCIDMA1, PCIC1_PCIDMA2,
 198             PCIC1_PCIDMA3, PCIC0_PCISERR } },
 199 };
 200
 201 static DECLARE_INTC_DESC(intc_desc_tmu34, "sh7750_tmu34",
 202                          vectors_tmu34, NULL,
 203                          mask_registers, prio_registers, NULL);
 204 #endif
 205
 206 /* SH7750S, SH7750R, SH7751 and SH7751R all have IRLM priority registers */
 207 static struct intc_vect vectors_irlm[] __initdata = {
 208         INTC_VECT(IRL0, 0x240), INTC_VECT(IRL1, 0x2a0),
 209         INTC_VECT(IRL2, 0x300), INTC_VECT(IRL3, 0x360),
 210 };
 211
 212 static DECLARE_INTC_DESC(intc_desc_irlm, "sh7750_irlm", vectors_irlm, NULL,
 213                          NULL, prio_registers, NULL);
 214
 215 /* SH7751 and SH7751R both have PCI */
 216 #if defined(CONFIG_CPU_SUBTYPE_SH7751) || defined(CONFIG_CPU_SUBTYPE_SH7751R)
 217 static struct intc_vect vectors_pci[] __initdata = {
 218         INTC_VECT(PCIC0_PCISERR, 0xa00), INTC_VECT(PCIC1_PCIERR, 0xae0),
 219         INTC_VECT(PCIC1_PCIPWDWN, 0xac0), INTC_VECT(PCIC1_PCIPWON, 0xaa0),
 220         INTC_VECT(PCIC1_PCIDMA0, 0xa80), INTC_VECT(PCIC1_PCIDMA1, 0xa60),
 221         INTC_VECT(PCIC1_PCIDMA2, 0xa40), INTC_VECT(PCIC1_PCIDMA3, 0xa20),
 222 };
 223
 224 static struct intc_group groups_pci[] __initdata = {
 225         INTC_GROUP(PCIC1, PCIC1_PCIERR, PCIC1_PCIPWDWN, PCIC1_PCIPWON,
 226                    PCIC1_PCIDMA0, PCIC1_PCIDMA1, PCIC1_PCIDMA2, PCIC1_PCIDMA3),
 227 };
 228
 229 static DECLARE_INTC_DESC(intc_desc_pci, "sh7750_pci", vectors_pci, groups_pci,
 230                          mask_registers, prio_registers, NULL);
 231 #endif
 232
 233 #if defined(CONFIG_CPU_SUBTYPE_SH7750) || \
 234         defined(CONFIG_CPU_SUBTYPE_SH7750S) || \
 235         defined(CONFIG_CPU_SUBTYPE_SH7091)
 236 void __init plat_irq_setup(void)
 237 {
 238         /*
 239          * same vectors for SH7750, SH7750S and SH7091 except for IRLM,
 240          * see below..
 241          */
 242         register_intc_controller(&intc_desc);
 243         register_intc_controller(&intc_desc_dma4);
 244 }
 245 #endif
 246
 247 #if defined(CONFIG_CPU_SUBTYPE_SH7750R)
 248 void __init plat_irq_setup(void)
 249 {
 250         register_intc_controller(&intc_desc);
 251         register_intc_controller(&intc_desc_dma8);
 252         register_intc_controller(&intc_desc_tmu34);
 253 }
 254 #endif
 255
 256 #if defined(CONFIG_CPU_SUBTYPE_SH7751)
 257 void __init plat_irq_setup(void)
 258 {
 259         register_intc_controller(&intc_desc);
 260         register_intc_controller(&intc_desc_dma4);
 261         register_intc_controller(&intc_desc_tmu34);
 262         register_intc_controller(&intc_desc_pci);
 263 }
 264 #endif
 265
 266 #if defined(CONFIG_CPU_SUBTYPE_SH7751R)
 267 void __init plat_irq_setup(void)
 268 {
 269         register_intc_controller(&intc_desc);
 270         register_intc_controller(&intc_desc_dma8);
 271         register_intc_controller(&intc_desc_tmu34);
 272         register_intc_controller(&intc_desc_pci);
 273 }
 274 #endif
 275
 276 #define INTC_ICR        0xffd00000UL
 277 #define INTC_ICR_IRLM   (1<<7)
 278
 279 void __init plat_irq_setup_pins(int mode)
 280 {
 281 #if defined(CONFIG_CPU_SUBTYPE_SH7750) || defined(CONFIG_CPU_SUBTYPE_SH7091)
 282         BUG(); /* impossible to mask interrupts on SH7750 and SH7091 */
 283         return;
 284 #endif
 285
 286         switch (mode) {
 287         case IRQ_MODE_IRQ: /* individual interrupt mode for IRL3-0 */
 288                 ctrl_outw(ctrl_inw(INTC_ICR) | INTC_ICR_IRLM, INTC_ICR);
 289                 register_intc_controller(&intc_desc_irlm);
 290                 break;
 291         default:
 292                 BUG();
 293         }
 294 }