arch/avr32/mach-at32ap/at32ap7000.c

   1 /*
   2  * Copyright (C) 2005-2006 Atmel Corporation
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  */
   8 #include <linux/clk.h>
   9 #include <linux/init.h>
  10 #include <linux/platform_device.h>
  11
  12 #include <asm/io.h>
  13
  14 #include <asm/arch/board.h>
  15 #include <asm/arch/portmux.h>
  16 #include <asm/arch/sm.h>
  17
  18 #include "clock.h"
  19 #include "pio.h"
  20 #include "sm.h"
  21
  22 #define PBMEM(base)                                     \
  23         {                                               \
  24                 .start          = base,                 \
  25                 .end            = base + 0x3ff,         \
  26                 .flags          = IORESOURCE_MEM,       \
  27         }
  28 #define IRQ(num)                                        \
  29         {                                               \
  30                 .start          = num,                  \
  31                 .end            = num,                  \
  32                 .flags          = IORESOURCE_IRQ,       \
  33         }
  34 #define NAMED_IRQ(num, _name)                           \
  35         {                                               \
  36                 .start          = num,                  \
  37                 .end            = num,                  \
  38                 .name           = _name,                \
  39                 .flags          = IORESOURCE_IRQ,       \
  40         }
  41
  42 #define DEFINE_DEV(_name, _id)                                  \
  43 static struct platform_device _name##_id##_device = {           \
  44         .name           = #_name,                               \
  45         .id             = _id,                                  \
  46         .resource       = _name##_id##_resource,                \
  47         .num_resources  = ARRAY_SIZE(_name##_id##_resource),    \
  48 }
  49 #define DEFINE_DEV_DATA(_name, _id)                             \
  50 static struct platform_device _name##_id##_device = {           \
  51         .name           = #_name,                               \
  52         .id             = _id,                                  \
  53         .dev            = {                                     \
  54                 .platform_data  = &_name##_id##_data,           \
  55         },                                                      \
  56         .resource       = _name##_id##_resource,                \
  57         .num_resources  = ARRAY_SIZE(_name##_id##_resource),    \
  58 }
  59
  60 #define DEV_CLK(_name, devname, bus, _index)                    \
  61 static struct clk devname##_##_name = {                         \
  62         .name           = #_name,                               \
  63         .dev            = &devname##_device.dev,                \
  64         .parent         = &bus##_clk,                           \
  65         .mode           = bus##_clk_mode,                       \
  66         .get_rate       = bus##_clk_get_rate,                   \
  67         .index          = _index,                               \
  68 }
  69
  70 enum {
  71         PIOA,
  72         PIOB,
  73         PIOC,
  74         PIOD,
  75 };
  76
  77 enum {
  78         FUNC_A,
  79         FUNC_B,
  80 };
  81
  82 unsigned long at32ap7000_osc_rates[3] = {
  83         [0] = 32768,
  84         /* FIXME: these are ATSTK1002-specific */
  85         [1] = 20000000,
  86         [2] = 12000000,
  87 };
  88
  89 static unsigned long osc_get_rate(struct clk *clk)
  90 {
  91         return at32ap7000_osc_rates[clk->index];
  92 }
  93
  94 static unsigned long pll_get_rate(struct clk *clk, unsigned long control)
  95 {
  96         unsigned long div, mul, rate;
  97
  98         if (!(control & SM_BIT(PLLEN)))
  99                 return 0;
 100
 101         div = SM_BFEXT(PLLDIV, control) + 1;
 102         mul = SM_BFEXT(PLLMUL, control) + 1;
 103
 104         rate = clk->parent->get_rate(clk->parent);
 105         rate = (rate + div / 2) / div;
 106         rate *= mul;
 107
 108         return rate;
 109 }
 110
 111 static unsigned long pll0_get_rate(struct clk *clk)
 112 {
 113         u32 control;
 114
 115         control = sm_readl(&system_manager, PM_PLL0);
 116
 117         return pll_get_rate(clk, control);
 118 }
 119
 120 static unsigned long pll1_get_rate(struct clk *clk)
 121 {
 122         u32 control;
 123
 124         control = sm_readl(&system_manager, PM_PLL1);
 125
 126         return pll_get_rate(clk, control);
 127 }
 128
 129 /*
 130  * The AT32AP7000 has five primary clock sources: One 32kHz
 131  * oscillator, two crystal oscillators and two PLLs.
 132  */
 133 static struct clk osc32k = {
 134         .name           = "osc32k",
 135         .get_rate       = osc_get_rate,
 136         .users          = 1,
 137         .index          = 0,
 138 };
 139 static struct clk osc0 = {
 140         .name           = "osc0",
 141         .get_rate       = osc_get_rate,
 142         .users          = 1,
 143         .index          = 1,
 144 };
 145 static struct clk osc1 = {
 146         .name           = "osc1",
 147         .get_rate       = osc_get_rate,
 148         .index          = 2,
 149 };
 150 static struct clk pll0 = {
 151         .name           = "pll0",
 152         .get_rate       = pll0_get_rate,
 153         .parent         = &osc0,
 154 };
 155 static struct clk pll1 = {
 156         .name           = "pll1",
 157         .get_rate       = pll1_get_rate,
 158         .parent         = &osc0,
 159 };
 160
 161 /*
 162  * The main clock can be either osc0 or pll0.  The boot loader may
 163  * have chosen one for us, so we don't really know which one until we
 164  * have a look at the SM.
 165  */
 166 static struct clk *main_clock;
 167
 168 /*
 169  * Synchronous clocks are generated from the main clock. The clocks
 170  * must satisfy the constraint
 171  *   fCPU >= fHSB >= fPB
 172  * i.e. each clock must not be faster than its parent.
 173  */
 174 static unsigned long bus_clk_get_rate(struct clk *clk, unsigned int shift)
 175 {
 176         return main_clock->get_rate(main_clock) >> shift;
 177 };
 178
 179 static void cpu_clk_mode(struct clk *clk, int enabled)
 180 {
 181         struct at32_sm *sm = &system_manager;
 182         unsigned long flags;
 183         u32 mask;
 184
 185         spin_lock_irqsave(&sm->lock, flags);
 186         mask = sm_readl(sm, PM_CPU_MASK);
 187         if (enabled)
 188                 mask |= 1 << clk->index;
 189         else
 190                 mask &= ~(1 << clk->index);
 191         sm_writel(sm, PM_CPU_MASK, mask);
 192         spin_unlock_irqrestore(&sm->lock, flags);
 193 }
 194
 195 static unsigned long cpu_clk_get_rate(struct clk *clk)
 196 {
 197         unsigned long cksel, shift = 0;
 198
 199         cksel = sm_readl(&system_manager, PM_CKSEL);
 200         if (cksel & SM_BIT(CPUDIV))
 201                 shift = SM_BFEXT(CPUSEL, cksel) + 1;
 202
 203         return bus_clk_get_rate(clk, shift);
 204 }
 205
 206 static void hsb_clk_mode(struct clk *clk, int enabled)
 207 {
 208         struct at32_sm *sm = &system_manager;
 209         unsigned long flags;
 210         u32 mask;
 211
 212         spin_lock_irqsave(&sm->lock, flags);
 213         mask = sm_readl(sm, PM_HSB_MASK);
 214         if (enabled)
 215                 mask |= 1 << clk->index;
 216         else
 217                 mask &= ~(1 << clk->index);
 218         sm_writel(sm, PM_HSB_MASK, mask);
 219         spin_unlock_irqrestore(&sm->lock, flags);
 220 }
 221
 222 static unsigned long hsb_clk_get_rate(struct clk *clk)
 223 {
 224         unsigned long cksel, shift = 0;
 225
 226         cksel = sm_readl(&system_manager, PM_CKSEL);
 227         if (cksel & SM_BIT(HSBDIV))
 228                 shift = SM_BFEXT(HSBSEL, cksel) + 1;
 229
 230         return bus_clk_get_rate(clk, shift);
 231 }
 232
 233 static void pba_clk_mode(struct clk *clk, int enabled)
 234 {
 235         struct at32_sm *sm = &system_manager;
 236         unsigned long flags;
 237         u32 mask;
 238
 239         spin_lock_irqsave(&sm->lock, flags);
 240         mask = sm_readl(sm, PM_PBA_MASK);
 241         if (enabled)
 242                 mask |= 1 << clk->index;
 243         else
 244                 mask &= ~(1 << clk->index);
 245         sm_writel(sm, PM_PBA_MASK, mask);
 246         spin_unlock_irqrestore(&sm->lock, flags);
 247 }
 248
 249 static unsigned long pba_clk_get_rate(struct clk *clk)
 250 {
 251         unsigned long cksel, shift = 0;
 252
 253         cksel = sm_readl(&system_manager, PM_CKSEL);
 254         if (cksel & SM_BIT(PBADIV))
 255                 shift = SM_BFEXT(PBASEL, cksel) + 1;
 256
 257         return bus_clk_get_rate(clk, shift);
 258 }
 259
 260 static void pbb_clk_mode(struct clk *clk, int enabled)
 261 {
 262         struct at32_sm *sm = &system_manager;
 263         unsigned long flags;
 264         u32 mask;
 265
 266         spin_lock_irqsave(&sm->lock, flags);
 267         mask = sm_readl(sm, PM_PBB_MASK);
 268         if (enabled)
 269                 mask |= 1 << clk->index;
 270         else
 271                 mask &= ~(1 << clk->index);
 272         sm_writel(sm, PM_PBB_MASK, mask);
 273         spin_unlock_irqrestore(&sm->lock, flags);
 274 }
 275
 276 static unsigned long pbb_clk_get_rate(struct clk *clk)
 277 {
 278         unsigned long cksel, shift = 0;
 279
 280         cksel = sm_readl(&system_manager, PM_CKSEL);
 281         if (cksel & SM_BIT(PBBDIV))
 282                 shift = SM_BFEXT(PBBSEL, cksel) + 1;
 283
 284         return bus_clk_get_rate(clk, shift);
 285 }
 286
 287 static struct clk cpu_clk = {
 288         .name           = "cpu",
 289         .get_rate       = cpu_clk_get_rate,
 290         .users          = 1,
 291 };
 292 static struct clk hsb_clk = {
 293         .name           = "hsb",
 294         .parent         = &cpu_clk,
 295         .get_rate       = hsb_clk_get_rate,
 296 };
 297 static struct clk pba_clk = {
 298         .name           = "pba",
 299         .parent         = &hsb_clk,
 300         .mode           = hsb_clk_mode,
 301         .get_rate       = pba_clk_get_rate,
 302         .index          = 1,
 303 };
 304 static struct clk pbb_clk = {
 305         .name           = "pbb",
 306         .parent         = &hsb_clk,
 307         .mode           = hsb_clk_mode,
 308         .get_rate       = pbb_clk_get_rate,
 309         .users          = 1,
 310         .index          = 2,
 311 };
 312
 313 /* --------------------------------------------------------------------
 314  *  Generic Clock operations
 315  * -------------------------------------------------------------------- */
 316
 317 static void genclk_mode(struct clk *clk, int enabled)
 318 {
 319         u32 control;
 320
 321         BUG_ON(clk->index > 7);
 322
 323         control = sm_readl(&system_manager, PM_GCCTRL + 4 * clk->index);
 324         if (enabled)
 325                 control |= SM_BIT(CEN);
 326         else
 327                 control &= ~SM_BIT(CEN);
 328         sm_writel(&system_manager, PM_GCCTRL + 4 * clk->index, control);
 329 }
 330
 331 static unsigned long genclk_get_rate(struct clk *clk)
 332 {
 333         u32 control;
 334         unsigned long div = 1;
 335
 336         BUG_ON(clk->index > 7);
 337
 338         if (!clk->parent)
 339                 return 0;
 340
 341         control = sm_readl(&system_manager, PM_GCCTRL + 4 * clk->index);
 342         if (control & SM_BIT(DIVEN))
 343                 div = 2 * (SM_BFEXT(DIV, control) + 1);
 344
 345         return clk->parent->get_rate(clk->parent) / div;
 346 }
 347
 348 static long genclk_set_rate(struct clk *clk, unsigned long rate, int apply)
 349 {
 350         u32 control;
 351         unsigned long parent_rate, actual_rate, div;
 352
 353         BUG_ON(clk->index > 7);
 354
 355         if (!clk->parent)
 356                 return 0;
 357
 358         parent_rate = clk->parent->get_rate(clk->parent);
 359         control = sm_readl(&system_manager, PM_GCCTRL + 4 * clk->index);
 360
 361         if (rate > 3 * parent_rate / 4) {
 362                 actual_rate = parent_rate;
 363                 control &= ~SM_BIT(DIVEN);
 364         } else {
 365                 div = (parent_rate + rate) / (2 * rate) - 1;
 366                 control = SM_BFINS(DIV, div, control) | SM_BIT(DIVEN);
 367                 actual_rate = parent_rate / (2 * (div + 1));
 368         }
 369
 370         printk("clk %s: new rate %lu (actual rate %lu)\n",
 371                clk->name, rate, actual_rate);
 372
 373         if (apply)
 374                 sm_writel(&system_manager, PM_GCCTRL + 4 * clk->index,
 375                           control);
 376
 377         return actual_rate;
 378 }
 379
 380 int genclk_set_parent(struct clk *clk, struct clk *parent)
 381 {
 382         u32 control;
 383
 384         BUG_ON(clk->index > 7);
 385
 386         printk("clk %s: new parent %s (was %s)\n",
 387                clk->name, parent->name,
 388                clk->parent ? clk->parent->name : "(null)");
 389
 390         control = sm_readl(&system_manager, PM_GCCTRL + 4 * clk->index);
 391
 392         if (parent == &osc1 || parent == &pll1)
 393                 control |= SM_BIT(OSCSEL);
 394         else if (parent == &osc0 || parent == &pll0)
 395                 control &= ~SM_BIT(OSCSEL);
 396         else
 397                 return -EINVAL;
 398
 399         if (parent == &pll0 || parent == &pll1)
 400                 control |= SM_BIT(PLLSEL);
 401         else
 402                 control &= ~SM_BIT(PLLSEL);
 403
 404         sm_writel(&system_manager, PM_GCCTRL + 4 * clk->index, control);
 405         clk->parent = parent;
 406
 407         return 0;
 408 }
 409
 410 /* --------------------------------------------------------------------
 411  *  System peripherals
 412  * -------------------------------------------------------------------- */
 413 static struct resource sm_resource[] = {
 414         PBMEM(0xfff00000),
 415         NAMED_IRQ(19, "eim"),
 416         NAMED_IRQ(20, "pm"),
 417         NAMED_IRQ(21, "rtc"),
 418 };
 419 struct platform_device at32_sm_device = {
 420         .name           = "sm",
 421         .id             = 0,
 422         .resource       = sm_resource,
 423         .num_resources  = ARRAY_SIZE(sm_resource),
 424 };
 425 DEV_CLK(pclk, at32_sm, pbb, 0);
 426
 427 static struct resource intc0_resource[] = {
 428         PBMEM(0xfff00400),
 429 };
 430 struct platform_device at32_intc0_device = {
 431         .name           = "intc",
 432         .id             = 0,
 433         .resource       = intc0_resource,
 434         .num_resources  = ARRAY_SIZE(intc0_resource),
 435 };
 436 DEV_CLK(pclk, at32_intc0, pbb, 1);
 437
 438 static struct clk ebi_clk = {
 439         .name           = "ebi",
 440         .parent         = &hsb_clk,
 441         .mode           = hsb_clk_mode,
 442         .get_rate       = hsb_clk_get_rate,
 443         .users          = 1,
 444 };
 445 static struct clk hramc_clk = {
 446         .name           = "hramc",
 447         .parent         = &hsb_clk,
 448         .mode           = hsb_clk_mode,
 449         .get_rate       = hsb_clk_get_rate,
 450         .users          = 1,
 451 };
 452
 453 static struct platform_device pdc_device = {
 454         .name           = "pdc",
 455         .id             = 0,
 456 };
 457 DEV_CLK(hclk, pdc, hsb, 4);
 458 DEV_CLK(pclk, pdc, pba, 16);
 459
 460 static struct clk pico_clk = {
 461         .name           = "pico",
 462         .parent         = &cpu_clk,
 463         .mode           = cpu_clk_mode,
 464         .get_rate       = cpu_clk_get_rate,
 465         .users          = 1,
 466 };
 467
 468 /* --------------------------------------------------------------------
 469  *  PIO
 470  * -------------------------------------------------------------------- */
 471
 472 static struct resource pio0_resource[] = {
 473         PBMEM(0xffe02800),
 474         IRQ(13),
 475 };
 476 DEFINE_DEV(pio, 0);
 477 DEV_CLK(mck, pio0, pba, 10);
 478
 479 static struct resource pio1_resource[] = {
 480         PBMEM(0xffe02c00),
 481         IRQ(14),
 482 };
 483 DEFINE_DEV(pio, 1);
 484 DEV_CLK(mck, pio1, pba, 11);
 485
 486 static struct resource pio2_resource[] = {
 487         PBMEM(0xffe03000),
 488         IRQ(15),
 489 };
 490 DEFINE_DEV(pio, 2);
 491 DEV_CLK(mck, pio2, pba, 12);
 492
 493 static struct resource pio3_resource[] = {
 494         PBMEM(0xffe03400),
 495         IRQ(16),
 496 };
 497 DEFINE_DEV(pio, 3);
 498 DEV_CLK(mck, pio3, pba, 13);
 499
 500 void __init at32_add_system_devices(void)
 501 {
 502         system_manager.eim_first_irq = NR_INTERNAL_IRQS;
 503
 504         platform_device_register(&at32_sm_device);
 505         platform_device_register(&at32_intc0_device);
 506         platform_device_register(&pdc_device);
 507
 508         platform_device_register(&pio0_device);
 509         platform_device_register(&pio1_device);
 510         platform_device_register(&pio2_device);
 511         platform_device_register(&pio3_device);
 512 }
 513
 514 /* --------------------------------------------------------------------
 515  *  USART
 516  * -------------------------------------------------------------------- */
 517
 518 static struct resource usart0_resource[] = {
 519         PBMEM(0xffe00c00),
 520         IRQ(7),
 521 };
 522 DEFINE_DEV(usart, 0);
 523 DEV_CLK(usart, usart0, pba, 4);
 524
 525 static struct resource usart1_resource[] = {
 526         PBMEM(0xffe01000),
 527         IRQ(7),
 528 };
 529 DEFINE_DEV(usart, 1);
 530 DEV_CLK(usart, usart1, pba, 4);
 531
 532 static struct resource usart2_resource[] = {
 533         PBMEM(0xffe01400),
 534         IRQ(8),
 535 };
 536 DEFINE_DEV(usart, 2);
 537 DEV_CLK(usart, usart2, pba, 5);
 538
 539 static struct resource usart3_resource[] = {
 540         PBMEM(0xffe01800),
 541         IRQ(9),
 542 };
 543 DEFINE_DEV(usart, 3);
 544 DEV_CLK(usart, usart3, pba, 6);
 545
 546 static inline void configure_usart0_pins(void)
 547 {
 548         portmux_set_func(PIOA,  8, FUNC_B);     /* RXD  */
 549         portmux_set_func(PIOA,  9, FUNC_B);     /* TXD  */
 550 }
 551
 552 static inline void configure_usart1_pins(void)
 553 {
 554         portmux_set_func(PIOA, 17, FUNC_A);     /* RXD  */
 555         portmux_set_func(PIOA, 18, FUNC_A);     /* TXD  */
 556 }
 557
 558 static inline void configure_usart2_pins(void)
 559 {
 560         portmux_set_func(PIOB, 26, FUNC_B);     /* RXD  */
 561         portmux_set_func(PIOB, 27, FUNC_B);     /* TXD  */
 562 }
 563
 564 static inline void configure_usart3_pins(void)
 565 {
 566         portmux_set_func(PIOB, 18, FUNC_B);     /* RXD  */
 567         portmux_set_func(PIOB, 17, FUNC_B);     /* TXD  */
 568 }
 569
 570 static struct platform_device *setup_usart(unsigned int id)
 571 {
 572         struct platform_device *pdev;
 573
 574         switch (id) {
 575         case 0:
 576                 pdev = &usart0_device;
 577                 configure_usart0_pins();
 578                 break;
 579         case 1:
 580                 pdev = &usart1_device;
 581                 configure_usart1_pins();
 582                 break;
 583         case 2:
 584                 pdev = &usart2_device;
 585                 configure_usart2_pins();
 586                 break;
 587         case 3:
 588                 pdev = &usart3_device;
 589                 configure_usart3_pins();
 590                 break;
 591         default:
 592                 pdev = NULL;
 593                 break;
 594         }
 595
 596         return pdev;
 597 }
 598
 599 struct platform_device *__init at32_add_device_usart(unsigned int id)
 600 {
 601         struct platform_device *pdev;
 602
 603         pdev = setup_usart(id);
 604         if (pdev)
 605                 platform_device_register(pdev);
 606
 607         return pdev;
 608 }
 609
 610 struct platform_device *at91_default_console_device;
 611
 612 void __init at32_setup_serial_console(unsigned int usart_id)
 613 {
 614         at91_default_console_device = setup_usart(usart_id);
 615 }
 616
 617 /* --------------------------------------------------------------------
 618  *  Ethernet
 619  * -------------------------------------------------------------------- */
 620
 621 static struct eth_platform_data macb0_data;
 622 static struct resource macb0_resource[] = {
 623         PBMEM(0xfff01800),
 624         IRQ(25),
 625 };
 626 DEFINE_DEV_DATA(macb, 0);
 627 DEV_CLK(hclk, macb0, hsb, 8);
 628 DEV_CLK(pclk, macb0, pbb, 6);
 629
 630 struct platform_device *__init
 631 at32_add_device_eth(unsigned int id, struct eth_platform_data *data)
 632 {
 633         struct platform_device *pdev;
 634
 635         switch (id) {
 636         case 0:
 637                 pdev = &macb0_device;
 638
 639                 portmux_set_func(PIOC,  3, FUNC_A);     /* TXD0 */
 640                 portmux_set_func(PIOC,  4, FUNC_A);     /* TXD1 */
 641                 portmux_set_func(PIOC,  7, FUNC_A);     /* TXEN */
 642                 portmux_set_func(PIOC,  8, FUNC_A);     /* TXCK */
 643                 portmux_set_func(PIOC,  9, FUNC_A);     /* RXD0 */
 644                 portmux_set_func(PIOC, 10, FUNC_A);     /* RXD1 */
 645                 portmux_set_func(PIOC, 13, FUNC_A);     /* RXER */
 646                 portmux_set_func(PIOC, 15, FUNC_A);     /* RXDV */
 647                 portmux_set_func(PIOC, 16, FUNC_A);     /* MDC  */
 648                 portmux_set_func(PIOC, 17, FUNC_A);     /* MDIO */
 649
 650                 if (!data->is_rmii) {
 651                         portmux_set_func(PIOC,  0, FUNC_A);     /* COL  */
 652                         portmux_set_func(PIOC,  1, FUNC_A);     /* CRS  */
 653                         portmux_set_func(PIOC,  2, FUNC_A);     /* TXER */
 654                         portmux_set_func(PIOC,  5, FUNC_A);     /* TXD2 */
 655                         portmux_set_func(PIOC,  6, FUNC_A);     /* TXD3 */
 656                         portmux_set_func(PIOC, 11, FUNC_A);     /* RXD2 */
 657                         portmux_set_func(PIOC, 12, FUNC_A);     /* RXD3 */
 658                         portmux_set_func(PIOC, 14, FUNC_A);     /* RXCK */
 659                         portmux_set_func(PIOC, 18, FUNC_A);     /* SPD  */
 660                 }
 661                 break;
 662
 663         default:
 664                 return NULL;
 665         }
 666
 667         memcpy(pdev->dev.platform_data, data, sizeof(struct eth_platform_data));
 668         platform_device_register(pdev);
 669
 670         return pdev;
 671 }
 672
 673 /* --------------------------------------------------------------------
 674  *  SPI
 675  * -------------------------------------------------------------------- */
 676 static struct resource spi0_resource[] = {
 677         PBMEM(0xffe00000),
 678         IRQ(3),
 679 };
 680 DEFINE_DEV(spi, 0);
 681 DEV_CLK(mck, spi0, pba, 0);
 682
 683 struct platform_device *__init at32_add_device_spi(unsigned int id)
 684 {
 685         struct platform_device *pdev;
 686
 687         switch (id) {
 688         case 0:
 689                 pdev = &spi0_device;
 690                 portmux_set_func(PIOA,  0, FUNC_A);     /* MISO  */
 691                 portmux_set_func(PIOA,  1, FUNC_A);     /* MOSI  */
 692                 portmux_set_func(PIOA,  2, FUNC_A);     /* SCK   */
 693                 portmux_set_func(PIOA,  3, FUNC_A);     /* NPCS0 */
 694                 portmux_set_func(PIOA,  4, FUNC_A);     /* NPCS1 */
 695                 portmux_set_func(PIOA,  5, FUNC_A);     /* NPCS2 */
 696                 break;
 697
 698         default:
 699                 return NULL;
 700         }
 701
 702         platform_device_register(pdev);
 703         return pdev;
 704 }
 705
 706 /* --------------------------------------------------------------------
 707  *  LCDC
 708  * -------------------------------------------------------------------- */
 709 static struct lcdc_platform_data lcdc0_data;
 710 static struct resource lcdc0_resource[] = {
 711         {
 712                 .start          = 0xff000000,
 713                 .end            = 0xff000fff,
 714                 .flags          = IORESOURCE_MEM,
 715         },
 716         IRQ(1),
 717 };
 718 DEFINE_DEV_DATA(lcdc, 0);
 719 DEV_CLK(hclk, lcdc0, hsb, 7);
 720 static struct clk lcdc0_pixclk = {
 721         .name           = "pixclk",
 722         .dev            = &lcdc0_device.dev,
 723         .mode           = genclk_mode,
 724         .get_rate       = genclk_get_rate,
 725         .set_rate       = genclk_set_rate,
 726         .set_parent     = genclk_set_parent,
 727         .index          = 7,
 728 };
 729
 730 struct platform_device *__init
 731 at32_add_device_lcdc(unsigned int id, struct lcdc_platform_data *data)
 732 {
 733         struct platform_device *pdev;
 734
 735         switch (id) {
 736         case 0:
 737                 pdev = &lcdc0_device;
 738                 portmux_set_func(PIOC, 19, FUNC_A);     /* CC     */
 739                 portmux_set_func(PIOC, 20, FUNC_A);     /* HSYNC  */
 740                 portmux_set_func(PIOC, 21, FUNC_A);     /* PCLK   */
 741                 portmux_set_func(PIOC, 22, FUNC_A);     /* VSYNC  */
 742                 portmux_set_func(PIOC, 23, FUNC_A);     /* DVAL   */
 743                 portmux_set_func(PIOC, 24, FUNC_A);     /* MODE   */
 744                 portmux_set_func(PIOC, 25, FUNC_A);     /* PWR    */
 745                 portmux_set_func(PIOC, 26, FUNC_A);     /* DATA0  */
 746                 portmux_set_func(PIOC, 27, FUNC_A);     /* DATA1  */
 747                 portmux_set_func(PIOC, 28, FUNC_A);     /* DATA2  */
 748                 portmux_set_func(PIOC, 29, FUNC_A);     /* DATA3  */
 749                 portmux_set_func(PIOC, 30, FUNC_A);     /* DATA4  */
 750                 portmux_set_func(PIOC, 31, FUNC_A);     /* DATA5  */
 751                 portmux_set_func(PIOD,  0, FUNC_A);     /* DATA6  */
 752                 portmux_set_func(PIOD,  1, FUNC_A);     /* DATA7  */
 753                 portmux_set_func(PIOD,  2, FUNC_A);     /* DATA8  */
 754                 portmux_set_func(PIOD,  3, FUNC_A);     /* DATA9  */
 755                 portmux_set_func(PIOD,  4, FUNC_A);     /* DATA10 */
 756                 portmux_set_func(PIOD,  5, FUNC_A);     /* DATA11 */
 757                 portmux_set_func(PIOD,  6, FUNC_A);     /* DATA12 */
 758                 portmux_set_func(PIOD,  7, FUNC_A);     /* DATA13 */
 759                 portmux_set_func(PIOD,  8, FUNC_A);     /* DATA14 */
 760                 portmux_set_func(PIOD,  9, FUNC_A);     /* DATA15 */
 761                 portmux_set_func(PIOD, 10, FUNC_A);     /* DATA16 */
 762                 portmux_set_func(PIOD, 11, FUNC_A);     /* DATA17 */
 763                 portmux_set_func(PIOD, 12, FUNC_A);     /* DATA18 */
 764                 portmux_set_func(PIOD, 13, FUNC_A);     /* DATA19 */
 765                 portmux_set_func(PIOD, 14, FUNC_A);     /* DATA20 */
 766                 portmux_set_func(PIOD, 15, FUNC_A);     /* DATA21 */
 767                 portmux_set_func(PIOD, 16, FUNC_A);     /* DATA22 */
 768                 portmux_set_func(PIOD, 17, FUNC_A);     /* DATA23 */
 769
 770                 clk_set_parent(&lcdc0_pixclk, &pll0);
 771                 clk_set_rate(&lcdc0_pixclk, clk_get_rate(&pll0));
 772                 break;
 773
 774         default:
 775                 return NULL;
 776         }
 777
 778         memcpy(pdev->dev.platform_data, data,
 779                sizeof(struct lcdc_platform_data));
 780
 781         platform_device_register(pdev);
 782         return pdev;
 783 }
 784
 785 struct clk *at32_clock_list[] = {
 786         &osc32k,
 787         &osc0,
 788         &osc1,
 789         &pll0,
 790         &pll1,
 791         &cpu_clk,
 792         &hsb_clk,
 793         &pba_clk,
 794         &pbb_clk,
 795         &at32_sm_pclk,
 796         &at32_intc0_pclk,
 797         &ebi_clk,
 798         &hramc_clk,
 799         &pdc_hclk,
 800         &pdc_pclk,
 801         &pico_clk,
 802         &pio0_mck,
 803         &pio1_mck,
 804         &pio2_mck,
 805         &pio3_mck,
 806         &usart0_usart,
 807         &usart1_usart,
 808         &usart2_usart,
 809         &usart3_usart,
 810         &macb0_hclk,
 811         &macb0_pclk,
 812         &spi0_mck,
 813         &lcdc0_hclk,
 814         &lcdc0_pixclk,
 815 };
 816 unsigned int at32_nr_clocks = ARRAY_SIZE(at32_clock_list);
 817
 818 void __init at32_portmux_init(void)
 819 {
 820         at32_init_pio(&pio0_device);
 821         at32_init_pio(&pio1_device);
 822         at32_init_pio(&pio2_device);
 823         at32_init_pio(&pio3_device);
 824 }
 825
 826 void __init at32_clock_init(void)
 827 {
 828         struct at32_sm *sm = &system_manager;
 829         u32 cpu_mask = 0, hsb_mask = 0, pba_mask = 0, pbb_mask = 0;
 830         int i;
 831
 832         if (sm_readl(sm, PM_MCCTRL) & SM_BIT(PLLSEL))
 833                 main_clock = &pll0;
 834         else
 835                 main_clock = &osc0;
 836
 837         if (sm_readl(sm, PM_PLL0) & SM_BIT(PLLOSC))
 838                 pll0.parent = &osc1;
 839         if (sm_readl(sm, PM_PLL1) & SM_BIT(PLLOSC))
 840                 pll1.parent = &osc1;
 841
 842         /*
 843          * Turn on all clocks that have at least one user already, and
 844          * turn off everything else. We only do this for module
 845          * clocks, and even though it isn't particularly pretty to
 846          * check the address of the mode function, it should do the
 847          * trick...
 848          */
 849         for (i = 0; i < ARRAY_SIZE(at32_clock_list); i++) {
 850                 struct clk *clk = at32_clock_list[i];
 851
 852                 if (clk->mode == &cpu_clk_mode)
 853                         cpu_mask |= 1 << clk->index;
 854                 else if (clk->mode == &hsb_clk_mode)
 855                         hsb_mask |= 1 << clk->index;
 856                 else if (clk->mode == &pba_clk_mode)
 857                         pba_mask |= 1 << clk->index;
 858                 else if (clk->mode == &pbb_clk_mode)
 859                         pbb_mask |= 1 << clk->index;
 860         }
 861
 862         sm_writel(sm, PM_CPU_MASK, cpu_mask);
 863         sm_writel(sm, PM_HSB_MASK, hsb_mask);
 864         sm_writel(sm, PM_PBA_MASK, pba_mask);
 865         sm_writel(sm, PM_PBB_MASK, pbb_mask);
 866 }