1 /*
2 * linux/arch/arm/mach-versatile/core.c
3 *
4 * Copyright (C) 1999 - 2003 ARM Limited
5 * Copyright (C) 2000 Deep Blue Solutions Ltd
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21 #include <linux/init.h>
22 #include <linux/device.h>
23 #include <linux/dma-mapping.h>
24 #include <linux/platform_device.h>
25 #include <linux/interrupt.h>
26 #include <linux/irqdomain.h>
27 #include <linux/of_address.h>
28 #include <linux/of_platform.h>
29 #include <linux/amba/bus.h>
30 #include <linux/amba/clcd.h>
31 #include <linux/platform_data/video-clcd-versatile.h>
32 #include <linux/amba/pl061.h>
33 #include <linux/amba/mmci.h>
34 #include <linux/amba/pl022.h>
35 #include <linux/io.h>
36 #include <linux/irqchip/arm-vic.h>
37 #include <linux/irqchip/versatile-fpga.h>
38 #include <linux/gfp.h>
39 #include <linux/clkdev.h>
40 #include <linux/mtd/physmap.h>
41 #include <linux/bitops.h>
42 #include <linux/reboot.h>
43
44 #include <clocksource/timer-sp804.h>
45
46 #include <asm/irq.h>
47 #include <asm/hardware/icst.h>
48 #include <asm/mach-types.h>
49
50 #include <asm/mach/arch.h>
51 #include <asm/mach/irq.h>
52 #include <asm/mach/time.h>
53 #include <asm/mach/map.h>
54 #include <mach/hardware.h>
55 #include <mach/platform.h>
56
57 #include <plat/sched_clock.h>
58
59 #include "core.h"
60
61 /*
62 * All IO addresses are mapped onto VA 0xFFFx.xxxx, where x.xxxx
63 * is the (PA >> 12).
64 *
65 * Setup a VA for the Versatile Vectored Interrupt Controller.
66 */
67 #define VA_VIC_BASE __io_address(VERSATILE_VIC_BASE)
68 #define VA_SIC_BASE __io_address(VERSATILE_SIC_BASE)
69
70 /* These PIC IRQs are valid in each configuration */
71 #define PIC_VALID_ALL BIT(SIC_INT_KMI0) | BIT(SIC_INT_KMI1) | \
72 BIT(SIC_INT_SCI3) | BIT(SIC_INT_UART3) | \
73 BIT(SIC_INT_CLCD) | BIT(SIC_INT_TOUCH) | \
74 BIT(SIC_INT_KEYPAD) | BIT(SIC_INT_DoC) | \
75 BIT(SIC_INT_USB) | BIT(SIC_INT_PCI0) | \
76 BIT(SIC_INT_PCI1) | BIT(SIC_INT_PCI2) | \
77 BIT(SIC_INT_PCI3)
78 #if 1
79 #define IRQ_MMCI0A IRQ_VICSOURCE22
80 #define IRQ_AACI IRQ_VICSOURCE24
81 #define IRQ_ETH IRQ_VICSOURCE25
82 #define PIC_MASK 0xFFD00000
83 #define PIC_VALID PIC_VALID_ALL
84 #else
85 #define IRQ_MMCI0A IRQ_SIC_MMCI0A
86 #define IRQ_AACI IRQ_SIC_AACI
87 #define IRQ_ETH IRQ_SIC_ETH
88 #define PIC_MASK 0
89 #define PIC_VALID PIC_VALID_ALL | BIT(SIC_INT_MMCI0A) | \
90 BIT(SIC_INT_MMCI1A) | BIT(SIC_INT_AACI) | \
91 BIT(SIC_INT_ETH)
92 #endif
93
94 /* Lookup table for finding a DT node that represents the vic instance */
95 static const struct of_device_id vic_of_match[] __initconst = {
96 { .compatible = "arm,versatile-vic", },
97 {}
98 };
99
100 static const struct of_device_id sic_of_match[] __initconst = {
101 { .compatible = "arm,versatile-sic", },
102 {}
103 };
104
versatile_init_irq(void)105 void __init versatile_init_irq(void)
106 {
107 struct device_node *np;
108
109 np = of_find_matching_node_by_address(NULL, vic_of_match,
110 VERSATILE_VIC_BASE);
111 __vic_init(VA_VIC_BASE, 0, IRQ_VIC_START, ~0, 0, np);
112
113 writel(~0, VA_SIC_BASE + SIC_IRQ_ENABLE_CLEAR);
114
115 np = of_find_matching_node_by_address(NULL, sic_of_match,
116 VERSATILE_SIC_BASE);
117
118 fpga_irq_init(VA_SIC_BASE, "SIC", IRQ_SIC_START,
119 IRQ_VICSOURCE31, PIC_VALID, np);
120
121 /*
122 * Interrupts on secondary controller from 0 to 8 are routed to
123 * source 31 on PIC.
124 * Interrupts from 21 to 31 are routed directly to the VIC on
125 * the corresponding number on primary controller. This is controlled
126 * by setting PIC_ENABLEx.
127 */
128 writel(PIC_MASK, VA_SIC_BASE + SIC_INT_PIC_ENABLE);
129 }
130
131 static struct map_desc versatile_io_desc[] __initdata __maybe_unused = {
132 {
133 .virtual = IO_ADDRESS(VERSATILE_SYS_BASE),
134 .pfn = __phys_to_pfn(VERSATILE_SYS_BASE),
135 .length = SZ_4K,
136 .type = MT_DEVICE
137 }, {
138 .virtual = IO_ADDRESS(VERSATILE_SIC_BASE),
139 .pfn = __phys_to_pfn(VERSATILE_SIC_BASE),
140 .length = SZ_4K,
141 .type = MT_DEVICE
142 }, {
143 .virtual = IO_ADDRESS(VERSATILE_VIC_BASE),
144 .pfn = __phys_to_pfn(VERSATILE_VIC_BASE),
145 .length = SZ_4K,
146 .type = MT_DEVICE
147 }, {
148 .virtual = IO_ADDRESS(VERSATILE_SCTL_BASE),
149 .pfn = __phys_to_pfn(VERSATILE_SCTL_BASE),
150 .length = SZ_4K * 9,
151 .type = MT_DEVICE
152 },
153 #ifdef CONFIG_MACH_VERSATILE_AB
154 {
155 .virtual = IO_ADDRESS(VERSATILE_IB2_BASE),
156 .pfn = __phys_to_pfn(VERSATILE_IB2_BASE),
157 .length = SZ_64M,
158 .type = MT_DEVICE
159 },
160 #endif
161 #ifdef CONFIG_DEBUG_LL
162 {
163 .virtual = IO_ADDRESS(VERSATILE_UART0_BASE),
164 .pfn = __phys_to_pfn(VERSATILE_UART0_BASE),
165 .length = SZ_4K,
166 .type = MT_DEVICE
167 },
168 #endif
169 #ifdef CONFIG_PCI
170 {
171 .virtual = IO_ADDRESS(VERSATILE_PCI_CORE_BASE),
172 .pfn = __phys_to_pfn(VERSATILE_PCI_CORE_BASE),
173 .length = SZ_4K,
174 .type = MT_DEVICE
175 }, {
176 .virtual = (unsigned long)VERSATILE_PCI_VIRT_BASE,
177 .pfn = __phys_to_pfn(VERSATILE_PCI_BASE),
178 .length = VERSATILE_PCI_BASE_SIZE,
179 .type = MT_DEVICE
180 }, {
181 .virtual = (unsigned long)VERSATILE_PCI_CFG_VIRT_BASE,
182 .pfn = __phys_to_pfn(VERSATILE_PCI_CFG_BASE),
183 .length = VERSATILE_PCI_CFG_BASE_SIZE,
184 .type = MT_DEVICE
185 },
186 #endif
187 };
188
versatile_map_io(void)189 void __init versatile_map_io(void)
190 {
191 iotable_init(versatile_io_desc, ARRAY_SIZE(versatile_io_desc));
192 }
193
194
195 #define VERSATILE_FLASHCTRL (__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_FLASH_OFFSET)
196
versatile_flash_set_vpp(struct platform_device * pdev,int on)197 static void versatile_flash_set_vpp(struct platform_device *pdev, int on)
198 {
199 u32 val;
200
201 val = __raw_readl(VERSATILE_FLASHCTRL);
202 if (on)
203 val |= VERSATILE_FLASHPROG_FLVPPEN;
204 else
205 val &= ~VERSATILE_FLASHPROG_FLVPPEN;
206 __raw_writel(val, VERSATILE_FLASHCTRL);
207 }
208
209 static struct physmap_flash_data versatile_flash_data = {
210 .width = 4,
211 .set_vpp = versatile_flash_set_vpp,
212 };
213
214 static struct resource versatile_flash_resource = {
215 .start = VERSATILE_FLASH_BASE,
216 .end = VERSATILE_FLASH_BASE + VERSATILE_FLASH_SIZE - 1,
217 .flags = IORESOURCE_MEM,
218 };
219
220 static struct platform_device versatile_flash_device = {
221 .name = "physmap-flash",
222 .id = 0,
223 .dev = {
224 .platform_data = &versatile_flash_data,
225 },
226 .num_resources = 1,
227 .resource = &versatile_flash_resource,
228 };
229
230 static struct resource smc91x_resources[] = {
231 [0] = {
232 .start = VERSATILE_ETH_BASE,
233 .end = VERSATILE_ETH_BASE + SZ_64K - 1,
234 .flags = IORESOURCE_MEM,
235 },
236 [1] = {
237 .start = IRQ_ETH,
238 .end = IRQ_ETH,
239 .flags = IORESOURCE_IRQ,
240 },
241 };
242
243 static struct platform_device smc91x_device = {
244 .name = "smc91x",
245 .id = 0,
246 .num_resources = ARRAY_SIZE(smc91x_resources),
247 .resource = smc91x_resources,
248 };
249
250 static struct resource versatile_i2c_resource = {
251 .start = VERSATILE_I2C_BASE,
252 .end = VERSATILE_I2C_BASE + SZ_4K - 1,
253 .flags = IORESOURCE_MEM,
254 };
255
256 static struct platform_device versatile_i2c_device = {
257 .name = "versatile-i2c",
258 .id = 0,
259 .num_resources = 1,
260 .resource = &versatile_i2c_resource,
261 };
262
263 static struct i2c_board_info versatile_i2c_board_info[] = {
264 {
265 I2C_BOARD_INFO("ds1338", 0xd0 >> 1),
266 },
267 };
268
versatile_i2c_init(void)269 static int __init versatile_i2c_init(void)
270 {
271 return i2c_register_board_info(0, versatile_i2c_board_info,
272 ARRAY_SIZE(versatile_i2c_board_info));
273 }
274 arch_initcall(versatile_i2c_init);
275
276 #define VERSATILE_SYSMCI (__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_MCI_OFFSET)
277
mmc_status(struct device * dev)278 unsigned int mmc_status(struct device *dev)
279 {
280 struct amba_device *adev = container_of(dev, struct amba_device, dev);
281 u32 mask;
282
283 if (adev->res.start == VERSATILE_MMCI0_BASE)
284 mask = 1;
285 else
286 mask = 2;
287
288 return readl(VERSATILE_SYSMCI) & mask;
289 }
290
291 static struct mmci_platform_data mmc0_plat_data = {
292 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
293 .status = mmc_status,
294 .gpio_wp = -1,
295 .gpio_cd = -1,
296 };
297
298 static struct resource char_lcd_resources[] = {
299 {
300 .start = VERSATILE_CHAR_LCD_BASE,
301 .end = (VERSATILE_CHAR_LCD_BASE + SZ_4K - 1),
302 .flags = IORESOURCE_MEM,
303 },
304 };
305
306 static struct platform_device char_lcd_device = {
307 .name = "arm-charlcd",
308 .id = -1,
309 .num_resources = ARRAY_SIZE(char_lcd_resources),
310 .resource = char_lcd_resources,
311 };
312
313 static struct resource leds_resources[] = {
314 {
315 .start = VERSATILE_SYS_BASE + VERSATILE_SYS_LED_OFFSET,
316 .end = VERSATILE_SYS_BASE + VERSATILE_SYS_LED_OFFSET + 4,
317 .flags = IORESOURCE_MEM,
318 },
319 };
320
321 static struct platform_device leds_device = {
322 .name = "versatile-leds",
323 .id = -1,
324 .num_resources = ARRAY_SIZE(leds_resources),
325 .resource = leds_resources,
326 };
327
328 /*
329 * Clock handling
330 */
331 static const struct icst_params versatile_oscvco_params = {
332 .ref = 24000000,
333 .vco_max = ICST307_VCO_MAX,
334 .vco_min = ICST307_VCO_MIN,
335 .vd_min = 4 + 8,
336 .vd_max = 511 + 8,
337 .rd_min = 1 + 2,
338 .rd_max = 127 + 2,
339 .s2div = icst307_s2div,
340 .idx2s = icst307_idx2s,
341 };
342
versatile_oscvco_set(struct clk * clk,struct icst_vco vco)343 static void versatile_oscvco_set(struct clk *clk, struct icst_vco vco)
344 {
345 void __iomem *sys_lock = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_LOCK_OFFSET;
346 u32 val;
347
348 val = readl(clk->vcoreg) & ~0x7ffff;
349 val |= vco.v | (vco.r << 9) | (vco.s << 16);
350
351 writel(0xa05f, sys_lock);
352 writel(val, clk->vcoreg);
353 writel(0, sys_lock);
354 }
355
356 static const struct clk_ops osc4_clk_ops = {
357 .round = icst_clk_round,
358 .set = icst_clk_set,
359 .setvco = versatile_oscvco_set,
360 };
361
362 static struct clk osc4_clk = {
363 .ops = &osc4_clk_ops,
364 .params = &versatile_oscvco_params,
365 };
366
367 /*
368 * These are fixed clocks.
369 */
370 static struct clk ref24_clk = {
371 .rate = 24000000,
372 };
373
374 static struct clk sp804_clk = {
375 .rate = 1000000,
376 };
377
378 static struct clk dummy_apb_pclk;
379
380 static struct clk_lookup lookups[] = {
381 { /* AMBA bus clock */
382 .con_id = "apb_pclk",
383 .clk = &dummy_apb_pclk,
384 }, { /* UART0 */
385 .dev_id = "dev:f1",
386 .clk = &ref24_clk,
387 }, { /* UART1 */
388 .dev_id = "dev:f2",
389 .clk = &ref24_clk,
390 }, { /* UART2 */
391 .dev_id = "dev:f3",
392 .clk = &ref24_clk,
393 }, { /* UART3 */
394 .dev_id = "fpga:09",
395 .clk = &ref24_clk,
396 }, { /* KMI0 */
397 .dev_id = "fpga:06",
398 .clk = &ref24_clk,
399 }, { /* KMI1 */
400 .dev_id = "fpga:07",
401 .clk = &ref24_clk,
402 }, { /* MMC0 */
403 .dev_id = "fpga:05",
404 .clk = &ref24_clk,
405 }, { /* MMC1 */
406 .dev_id = "fpga:0b",
407 .clk = &ref24_clk,
408 }, { /* SSP */
409 .dev_id = "dev:f4",
410 .clk = &ref24_clk,
411 }, { /* CLCD */
412 .dev_id = "dev:20",
413 .clk = &osc4_clk,
414 }, { /* SP804 timers */
415 .dev_id = "sp804",
416 .clk = &sp804_clk,
417 },
418 };
419
420 /*
421 * CLCD support.
422 */
423 #define SYS_CLCD_MODE_MASK (3 << 0)
424 #define SYS_CLCD_MODE_888 (0 << 0)
425 #define SYS_CLCD_MODE_5551 (1 << 0)
426 #define SYS_CLCD_MODE_565_RLSB (2 << 0)
427 #define SYS_CLCD_MODE_565_BLSB (3 << 0)
428 #define SYS_CLCD_NLCDIOON (1 << 2)
429 #define SYS_CLCD_VDDPOSSWITCH (1 << 3)
430 #define SYS_CLCD_PWR3V5SWITCH (1 << 4)
431 #define SYS_CLCD_ID_MASK (0x1f << 8)
432 #define SYS_CLCD_ID_SANYO_3_8 (0x00 << 8)
433 #define SYS_CLCD_ID_UNKNOWN_8_4 (0x01 << 8)
434 #define SYS_CLCD_ID_EPSON_2_2 (0x02 << 8)
435 #define SYS_CLCD_ID_SANYO_2_5 (0x07 << 8)
436 #define SYS_CLCD_ID_VGA (0x1f << 8)
437
438 static bool is_sanyo_2_5_lcd;
439
440 /*
441 * Disable all display connectors on the interface module.
442 */
versatile_clcd_disable(struct clcd_fb * fb)443 static void versatile_clcd_disable(struct clcd_fb *fb)
444 {
445 void __iomem *sys_clcd = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_CLCD_OFFSET;
446 u32 val;
447
448 val = readl(sys_clcd);
449 val &= ~SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH;
450 writel(val, sys_clcd);
451
452 #ifdef CONFIG_MACH_VERSATILE_AB
453 /*
454 * If the LCD is Sanyo 2x5 in on the IB2 board, turn the back-light off
455 */
456 if (machine_is_versatile_ab() && is_sanyo_2_5_lcd) {
457 void __iomem *versatile_ib2_ctrl = __io_address(VERSATILE_IB2_CTRL);
458 unsigned long ctrl;
459
460 ctrl = readl(versatile_ib2_ctrl);
461 ctrl &= ~0x01;
462 writel(ctrl, versatile_ib2_ctrl);
463 }
464 #endif
465 }
466
467 /*
468 * Enable the relevant connector on the interface module.
469 */
versatile_clcd_enable(struct clcd_fb * fb)470 static void versatile_clcd_enable(struct clcd_fb *fb)
471 {
472 struct fb_var_screeninfo *var = &fb->fb.var;
473 void __iomem *sys_clcd = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_CLCD_OFFSET;
474 u32 val;
475
476 val = readl(sys_clcd);
477 val &= ~SYS_CLCD_MODE_MASK;
478
479 switch (var->green.length) {
480 case 5:
481 val |= SYS_CLCD_MODE_5551;
482 break;
483 case 6:
484 if (var->red.offset == 0)
485 val |= SYS_CLCD_MODE_565_RLSB;
486 else
487 val |= SYS_CLCD_MODE_565_BLSB;
488 break;
489 case 8:
490 val |= SYS_CLCD_MODE_888;
491 break;
492 }
493
494 /*
495 * Set the MUX
496 */
497 writel(val, sys_clcd);
498
499 /*
500 * And now enable the PSUs
501 */
502 val |= SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH;
503 writel(val, sys_clcd);
504
505 #ifdef CONFIG_MACH_VERSATILE_AB
506 /*
507 * If the LCD is Sanyo 2x5 in on the IB2 board, turn the back-light on
508 */
509 if (machine_is_versatile_ab() && is_sanyo_2_5_lcd) {
510 void __iomem *versatile_ib2_ctrl = __io_address(VERSATILE_IB2_CTRL);
511 unsigned long ctrl;
512
513 ctrl = readl(versatile_ib2_ctrl);
514 ctrl |= 0x01;
515 writel(ctrl, versatile_ib2_ctrl);
516 }
517 #endif
518 }
519
520 /*
521 * Detect which LCD panel is connected, and return the appropriate
522 * clcd_panel structure. Note: we do not have any information on
523 * the required timings for the 8.4in panel, so we presently assume
524 * VGA timings.
525 */
versatile_clcd_setup(struct clcd_fb * fb)526 static int versatile_clcd_setup(struct clcd_fb *fb)
527 {
528 void __iomem *sys_clcd = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_CLCD_OFFSET;
529 const char *panel_name;
530 u32 val;
531
532 is_sanyo_2_5_lcd = false;
533
534 val = readl(sys_clcd) & SYS_CLCD_ID_MASK;
535 if (val == SYS_CLCD_ID_SANYO_3_8)
536 panel_name = "Sanyo TM38QV67A02A";
537 else if (val == SYS_CLCD_ID_SANYO_2_5) {
538 panel_name = "Sanyo QVGA Portrait";
539 is_sanyo_2_5_lcd = true;
540 } else if (val == SYS_CLCD_ID_EPSON_2_2)
541 panel_name = "Epson L2F50113T00";
542 else if (val == SYS_CLCD_ID_VGA)
543 panel_name = "VGA";
544 else {
545 printk(KERN_ERR "CLCD: unknown LCD panel ID 0x%08x, using VGA\n",
546 val);
547 panel_name = "VGA";
548 }
549
550 fb->panel = versatile_clcd_get_panel(panel_name);
551 if (!fb->panel)
552 return -EINVAL;
553
554 return versatile_clcd_setup_dma(fb, SZ_1M);
555 }
556
versatile_clcd_decode(struct clcd_fb * fb,struct clcd_regs * regs)557 static void versatile_clcd_decode(struct clcd_fb *fb, struct clcd_regs *regs)
558 {
559 clcdfb_decode(fb, regs);
560
561 /* Always clear BGR for RGB565: we do the routing externally */
562 if (fb->fb.var.green.length == 6)
563 regs->cntl &= ~CNTL_BGR;
564 }
565
566 static struct clcd_board clcd_plat_data = {
567 .name = "Versatile",
568 .caps = CLCD_CAP_5551 | CLCD_CAP_565 | CLCD_CAP_888,
569 .check = clcdfb_check,
570 .decode = versatile_clcd_decode,
571 .disable = versatile_clcd_disable,
572 .enable = versatile_clcd_enable,
573 .setup = versatile_clcd_setup,
574 .mmap = versatile_clcd_mmap_dma,
575 .remove = versatile_clcd_remove_dma,
576 };
577
578 static struct pl061_platform_data gpio0_plat_data = {
579 .gpio_base = 0,
580 .irq_base = IRQ_GPIO0_START,
581 };
582
583 static struct pl061_platform_data gpio1_plat_data = {
584 .gpio_base = 8,
585 .irq_base = IRQ_GPIO1_START,
586 };
587
588 static struct pl061_platform_data gpio2_plat_data = {
589 .gpio_base = 16,
590 .irq_base = IRQ_GPIO2_START,
591 };
592
593 static struct pl061_platform_data gpio3_plat_data = {
594 .gpio_base = 24,
595 .irq_base = IRQ_GPIO3_START,
596 };
597
598 static struct pl022_ssp_controller ssp0_plat_data = {
599 .bus_id = 0,
600 .enable_dma = 0,
601 .num_chipselect = 1,
602 };
603
604 #define AACI_IRQ { IRQ_AACI }
605 #define MMCI0_IRQ { IRQ_MMCI0A,IRQ_SIC_MMCI0B }
606 #define KMI0_IRQ { IRQ_SIC_KMI0 }
607 #define KMI1_IRQ { IRQ_SIC_KMI1 }
608
609 /*
610 * These devices are connected directly to the multi-layer AHB switch
611 */
612 #define SMC_IRQ { }
613 #define MPMC_IRQ { }
614 #define CLCD_IRQ { IRQ_CLCDINT }
615 #define DMAC_IRQ { IRQ_DMAINT }
616
617 /*
618 * These devices are connected via the core APB bridge
619 */
620 #define SCTL_IRQ { }
621 #define WATCHDOG_IRQ { IRQ_WDOGINT }
622 #define GPIO0_IRQ { IRQ_GPIOINT0 }
623 #define GPIO1_IRQ { IRQ_GPIOINT1 }
624 #define GPIO2_IRQ { IRQ_GPIOINT2 }
625 #define GPIO3_IRQ { IRQ_GPIOINT3 }
626 #define RTC_IRQ { IRQ_RTCINT }
627
628 /*
629 * These devices are connected via the DMA APB bridge
630 */
631 #define SCI_IRQ { IRQ_SCIINT }
632 #define UART0_IRQ { IRQ_UARTINT0 }
633 #define UART1_IRQ { IRQ_UARTINT1 }
634 #define UART2_IRQ { IRQ_UARTINT2 }
635 #define SSP_IRQ { IRQ_SSPINT }
636
637 /* FPGA Primecells */
638 APB_DEVICE(aaci, "fpga:04", AACI, NULL);
639 APB_DEVICE(mmc0, "fpga:05", MMCI0, &mmc0_plat_data);
640 APB_DEVICE(kmi0, "fpga:06", KMI0, NULL);
641 APB_DEVICE(kmi1, "fpga:07", KMI1, NULL);
642
643 /* DevChip Primecells */
644 AHB_DEVICE(smc, "dev:00", SMC, NULL);
645 AHB_DEVICE(mpmc, "dev:10", MPMC, NULL);
646 AHB_DEVICE(clcd, "dev:20", CLCD, &clcd_plat_data);
647 AHB_DEVICE(dmac, "dev:30", DMAC, NULL);
648 APB_DEVICE(sctl, "dev:e0", SCTL, NULL);
649 APB_DEVICE(wdog, "dev:e1", WATCHDOG, NULL);
650 APB_DEVICE(gpio0, "dev:e4", GPIO0, &gpio0_plat_data);
651 APB_DEVICE(gpio1, "dev:e5", GPIO1, &gpio1_plat_data);
652 APB_DEVICE(gpio2, "dev:e6", GPIO2, &gpio2_plat_data);
653 APB_DEVICE(gpio3, "dev:e7", GPIO3, &gpio3_plat_data);
654 APB_DEVICE(rtc, "dev:e8", RTC, NULL);
655 APB_DEVICE(sci0, "dev:f0", SCI, NULL);
656 APB_DEVICE(uart0, "dev:f1", UART0, NULL);
657 APB_DEVICE(uart1, "dev:f2", UART1, NULL);
658 APB_DEVICE(uart2, "dev:f3", UART2, NULL);
659 APB_DEVICE(ssp0, "dev:f4", SSP, &ssp0_plat_data);
660
661 static struct amba_device *amba_devs[] __initdata = {
662 &dmac_device,
663 &uart0_device,
664 &uart1_device,
665 &uart2_device,
666 &smc_device,
667 &mpmc_device,
668 &clcd_device,
669 &sctl_device,
670 &wdog_device,
671 &gpio0_device,
672 &gpio1_device,
673 &gpio2_device,
674 &gpio3_device,
675 &rtc_device,
676 &sci0_device,
677 &ssp0_device,
678 &aaci_device,
679 &mmc0_device,
680 &kmi0_device,
681 &kmi1_device,
682 };
683
684 #ifdef CONFIG_OF
685 /*
686 * Lookup table for attaching a specific name and platform_data pointer to
687 * devices as they get created by of_platform_populate(). Ideally this table
688 * would not exist, but the current clock implementation depends on some devices
689 * having a specific name.
690 */
691 struct of_dev_auxdata versatile_auxdata_lookup[] __initdata = {
692 OF_DEV_AUXDATA("arm,primecell", VERSATILE_MMCI0_BASE, "fpga:05", &mmc0_plat_data),
693 OF_DEV_AUXDATA("arm,primecell", VERSATILE_KMI0_BASE, "fpga:06", NULL),
694 OF_DEV_AUXDATA("arm,primecell", VERSATILE_KMI1_BASE, "fpga:07", NULL),
695 OF_DEV_AUXDATA("arm,primecell", VERSATILE_UART3_BASE, "fpga:09", NULL),
696 /* FIXME: this is buggy, the platform data is needed for this MMC instance too */
697 OF_DEV_AUXDATA("arm,primecell", VERSATILE_MMCI1_BASE, "fpga:0b", NULL),
698
699 OF_DEV_AUXDATA("arm,primecell", VERSATILE_CLCD_BASE, "dev:20", &clcd_plat_data),
700 OF_DEV_AUXDATA("arm,primecell", VERSATILE_UART0_BASE, "dev:f1", NULL),
701 OF_DEV_AUXDATA("arm,primecell", VERSATILE_UART1_BASE, "dev:f2", NULL),
702 OF_DEV_AUXDATA("arm,primecell", VERSATILE_UART2_BASE, "dev:f3", NULL),
703 OF_DEV_AUXDATA("arm,primecell", VERSATILE_SSP_BASE, "dev:f4", &ssp0_plat_data),
704
705 #if 0
706 /*
707 * These entries are unnecessary because no clocks referencing
708 * them. I've left them in for now as place holders in case
709 * any of them need to be added back, but they should be
710 * removed before actually committing this patch. --gcl
711 */
712 OF_DEV_AUXDATA("arm,primecell", VERSATILE_AACI_BASE, "fpga:04", NULL),
713 OF_DEV_AUXDATA("arm,primecell", VERSATILE_SCI1_BASE, "fpga:0a", NULL),
714 OF_DEV_AUXDATA("arm,primecell", VERSATILE_SMC_BASE, "dev:00", NULL),
715 OF_DEV_AUXDATA("arm,primecell", VERSATILE_MPMC_BASE, "dev:10", NULL),
716 OF_DEV_AUXDATA("arm,primecell", VERSATILE_DMAC_BASE, "dev:30", NULL),
717
718 OF_DEV_AUXDATA("arm,primecell", VERSATILE_SCTL_BASE, "dev:e0", NULL),
719 OF_DEV_AUXDATA("arm,primecell", VERSATILE_WATCHDOG_BASE, "dev:e1", NULL),
720 OF_DEV_AUXDATA("arm,primecell", VERSATILE_GPIO0_BASE, "dev:e4", NULL),
721 OF_DEV_AUXDATA("arm,primecell", VERSATILE_GPIO1_BASE, "dev:e5", NULL),
722 OF_DEV_AUXDATA("arm,primecell", VERSATILE_GPIO2_BASE, "dev:e6", NULL),
723 OF_DEV_AUXDATA("arm,primecell", VERSATILE_GPIO3_BASE, "dev:e7", NULL),
724 OF_DEV_AUXDATA("arm,primecell", VERSATILE_RTC_BASE, "dev:e8", NULL),
725 OF_DEV_AUXDATA("arm,primecell", VERSATILE_SCI_BASE, "dev:f0", NULL),
726 #endif
727 {}
728 };
729 #endif
730
versatile_restart(enum reboot_mode mode,const char * cmd)731 void versatile_restart(enum reboot_mode mode, const char *cmd)
732 {
733 void __iomem *sys = __io_address(VERSATILE_SYS_BASE);
734 u32 val;
735
736 val = __raw_readl(sys + VERSATILE_SYS_RESETCTL_OFFSET);
737 val |= 0x105;
738
739 __raw_writel(0xa05f, sys + VERSATILE_SYS_LOCK_OFFSET);
740 __raw_writel(val, sys + VERSATILE_SYS_RESETCTL_OFFSET);
741 __raw_writel(0, sys + VERSATILE_SYS_LOCK_OFFSET);
742 }
743
744 /* Early initializations */
versatile_init_early(void)745 void __init versatile_init_early(void)
746 {
747 u32 val;
748 void __iomem *sys = __io_address(VERSATILE_SYS_BASE);
749
750 osc4_clk.vcoreg = sys + VERSATILE_SYS_OSCCLCD_OFFSET;
751 clkdev_add_table(lookups, ARRAY_SIZE(lookups));
752
753 versatile_sched_clock_init(sys + VERSATILE_SYS_24MHz_OFFSET, 24000000);
754
755 /*
756 * set clock frequency:
757 * VERSATILE_REFCLK is 32KHz
758 * VERSATILE_TIMCLK is 1MHz
759 */
760 val = readl(__io_address(VERSATILE_SCTL_BASE));
761 writel((VERSATILE_TIMCLK << VERSATILE_TIMER1_EnSel) |
762 (VERSATILE_TIMCLK << VERSATILE_TIMER2_EnSel) |
763 (VERSATILE_TIMCLK << VERSATILE_TIMER3_EnSel) |
764 (VERSATILE_TIMCLK << VERSATILE_TIMER4_EnSel) | val,
765 __io_address(VERSATILE_SCTL_BASE));
766 }
767
versatile_init(void)768 void __init versatile_init(void)
769 {
770 int i;
771
772 platform_device_register(&versatile_flash_device);
773 platform_device_register(&versatile_i2c_device);
774 platform_device_register(&smc91x_device);
775 platform_device_register(&char_lcd_device);
776 platform_device_register(&leds_device);
777
778 for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
779 struct amba_device *d = amba_devs[i];
780 amba_device_register(d, &iomem_resource);
781 }
782 }
783
784 /*
785 * Where is the timer (VA)?
786 */
787 #define TIMER0_VA_BASE __io_address(VERSATILE_TIMER0_1_BASE)
788 #define TIMER1_VA_BASE (__io_address(VERSATILE_TIMER0_1_BASE) + 0x20)
789 #define TIMER2_VA_BASE __io_address(VERSATILE_TIMER2_3_BASE)
790 #define TIMER3_VA_BASE (__io_address(VERSATILE_TIMER2_3_BASE) + 0x20)
791
792 /*
793 * Set up timer interrupt, and return the current time in seconds.
794 */
versatile_timer_init(void)795 void __init versatile_timer_init(void)
796 {
797
798 /*
799 * Initialise to a known state (all timers off)
800 */
801 sp804_timer_disable(TIMER0_VA_BASE);
802 sp804_timer_disable(TIMER1_VA_BASE);
803 sp804_timer_disable(TIMER2_VA_BASE);
804 sp804_timer_disable(TIMER3_VA_BASE);
805
806 sp804_clocksource_init(TIMER3_VA_BASE, "timer3");
807 sp804_clockevents_init(TIMER0_VA_BASE, IRQ_TIMERINT0_1, "timer0");
808 }
809