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1da177e4 LT |
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/config.h> | |
22 | #include <linux/init.h> | |
23 | #include <linux/device.h> | |
24 | #include <linux/dma-mapping.h> | |
d052d1be | 25 | #include <linux/platform_device.h> |
1da177e4 LT |
26 | #include <linux/sysdev.h> |
27 | #include <linux/interrupt.h> | |
28 | ||
29 | #include <asm/system.h> | |
30 | #include <asm/hardware.h> | |
31 | #include <asm/io.h> | |
32 | #include <asm/irq.h> | |
33 | #include <asm/leds.h> | |
1da177e4 LT |
34 | #include <asm/hardware/amba.h> |
35 | #include <asm/hardware/amba_clcd.h> | |
b720f732 | 36 | #include <asm/hardware/arm_timer.h> |
1da177e4 LT |
37 | #include <asm/hardware/icst307.h> |
38 | ||
39 | #include <asm/mach/arch.h> | |
40 | #include <asm/mach/flash.h> | |
41 | #include <asm/mach/irq.h> | |
42 | #include <asm/mach/time.h> | |
43 | #include <asm/mach/map.h> | |
44 | #include <asm/mach/mmc.h> | |
45 | ||
46 | #include "core.h" | |
47 | #include "clock.h" | |
48 | ||
49 | /* | |
50 | * All IO addresses are mapped onto VA 0xFFFx.xxxx, where x.xxxx | |
51 | * is the (PA >> 12). | |
52 | * | |
53 | * Setup a VA for the Versatile Vectored Interrupt Controller. | |
54 | */ | |
2ad4f86b AV |
55 | #define __io_address(n) __io(IO_ADDRESS(n)) |
56 | #define VA_VIC_BASE __io_address(VERSATILE_VIC_BASE) | |
57 | #define VA_SIC_BASE __io_address(VERSATILE_SIC_BASE) | |
1da177e4 LT |
58 | |
59 | static void vic_mask_irq(unsigned int irq) | |
60 | { | |
61 | irq -= IRQ_VIC_START; | |
62 | writel(1 << irq, VA_VIC_BASE + VIC_IRQ_ENABLE_CLEAR); | |
63 | } | |
64 | ||
65 | static void vic_unmask_irq(unsigned int irq) | |
66 | { | |
67 | irq -= IRQ_VIC_START; | |
68 | writel(1 << irq, VA_VIC_BASE + VIC_IRQ_ENABLE); | |
69 | } | |
70 | ||
71 | static struct irqchip vic_chip = { | |
72 | .ack = vic_mask_irq, | |
73 | .mask = vic_mask_irq, | |
74 | .unmask = vic_unmask_irq, | |
75 | }; | |
76 | ||
77 | static void sic_mask_irq(unsigned int irq) | |
78 | { | |
79 | irq -= IRQ_SIC_START; | |
80 | writel(1 << irq, VA_SIC_BASE + SIC_IRQ_ENABLE_CLEAR); | |
81 | } | |
82 | ||
83 | static void sic_unmask_irq(unsigned int irq) | |
84 | { | |
85 | irq -= IRQ_SIC_START; | |
86 | writel(1 << irq, VA_SIC_BASE + SIC_IRQ_ENABLE_SET); | |
87 | } | |
88 | ||
89 | static struct irqchip sic_chip = { | |
90 | .ack = sic_mask_irq, | |
91 | .mask = sic_mask_irq, | |
92 | .unmask = sic_unmask_irq, | |
93 | }; | |
94 | ||
95 | static void | |
96 | sic_handle_irq(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs) | |
97 | { | |
98 | unsigned long status = readl(VA_SIC_BASE + SIC_IRQ_STATUS); | |
99 | ||
100 | if (status == 0) { | |
101 | do_bad_IRQ(irq, desc, regs); | |
102 | return; | |
103 | } | |
104 | ||
105 | do { | |
106 | irq = ffs(status) - 1; | |
107 | status &= ~(1 << irq); | |
108 | ||
109 | irq += IRQ_SIC_START; | |
110 | ||
111 | desc = irq_desc + irq; | |
664399e1 | 112 | desc_handle_irq(irq, desc, regs); |
1da177e4 LT |
113 | } while (status); |
114 | } | |
115 | ||
116 | #if 1 | |
117 | #define IRQ_MMCI0A IRQ_VICSOURCE22 | |
118 | #define IRQ_AACI IRQ_VICSOURCE24 | |
119 | #define IRQ_ETH IRQ_VICSOURCE25 | |
120 | #define PIC_MASK 0xFFD00000 | |
121 | #else | |
122 | #define IRQ_MMCI0A IRQ_SIC_MMCI0A | |
123 | #define IRQ_AACI IRQ_SIC_AACI | |
124 | #define IRQ_ETH IRQ_SIC_ETH | |
125 | #define PIC_MASK 0 | |
126 | #endif | |
127 | ||
128 | void __init versatile_init_irq(void) | |
129 | { | |
130 | unsigned int i, value; | |
131 | ||
132 | /* Disable all interrupts initially. */ | |
133 | ||
134 | writel(0, VA_VIC_BASE + VIC_INT_SELECT); | |
135 | writel(0, VA_VIC_BASE + VIC_IRQ_ENABLE); | |
136 | writel(~0, VA_VIC_BASE + VIC_IRQ_ENABLE_CLEAR); | |
137 | writel(0, VA_VIC_BASE + VIC_IRQ_STATUS); | |
138 | writel(0, VA_VIC_BASE + VIC_ITCR); | |
139 | writel(~0, VA_VIC_BASE + VIC_IRQ_SOFT_CLEAR); | |
140 | ||
141 | /* | |
142 | * Make sure we clear all existing interrupts | |
143 | */ | |
144 | writel(0, VA_VIC_BASE + VIC_VECT_ADDR); | |
145 | for (i = 0; i < 19; i++) { | |
146 | value = readl(VA_VIC_BASE + VIC_VECT_ADDR); | |
147 | writel(value, VA_VIC_BASE + VIC_VECT_ADDR); | |
148 | } | |
149 | ||
150 | for (i = 0; i < 16; i++) { | |
151 | value = readl(VA_VIC_BASE + VIC_VECT_CNTL0 + (i * 4)); | |
152 | writel(value | VICVectCntl_Enable | i, VA_VIC_BASE + VIC_VECT_CNTL0 + (i * 4)); | |
153 | } | |
154 | ||
155 | writel(32, VA_VIC_BASE + VIC_DEF_VECT_ADDR); | |
156 | ||
157 | for (i = IRQ_VIC_START; i <= IRQ_VIC_END; i++) { | |
158 | if (i != IRQ_VICSOURCE31) { | |
159 | set_irq_chip(i, &vic_chip); | |
160 | set_irq_handler(i, do_level_IRQ); | |
161 | set_irq_flags(i, IRQF_VALID | IRQF_PROBE); | |
162 | } | |
163 | } | |
164 | ||
165 | set_irq_handler(IRQ_VICSOURCE31, sic_handle_irq); | |
166 | vic_unmask_irq(IRQ_VICSOURCE31); | |
167 | ||
168 | /* Do second interrupt controller */ | |
169 | writel(~0, VA_SIC_BASE + SIC_IRQ_ENABLE_CLEAR); | |
170 | ||
171 | for (i = IRQ_SIC_START; i <= IRQ_SIC_END; i++) { | |
172 | if ((PIC_MASK & (1 << (i - IRQ_SIC_START))) == 0) { | |
173 | set_irq_chip(i, &sic_chip); | |
174 | set_irq_handler(i, do_level_IRQ); | |
175 | set_irq_flags(i, IRQF_VALID | IRQF_PROBE); | |
176 | } | |
177 | } | |
178 | ||
179 | /* | |
180 | * Interrupts on secondary controller from 0 to 8 are routed to | |
181 | * source 31 on PIC. | |
182 | * Interrupts from 21 to 31 are routed directly to the VIC on | |
183 | * the corresponding number on primary controller. This is controlled | |
184 | * by setting PIC_ENABLEx. | |
185 | */ | |
186 | writel(PIC_MASK, VA_SIC_BASE + SIC_INT_PIC_ENABLE); | |
187 | } | |
188 | ||
189 | static struct map_desc versatile_io_desc[] __initdata = { | |
1311521f DS |
190 | { |
191 | .virtual = IO_ADDRESS(VERSATILE_SYS_BASE), | |
192 | .pfn = __phys_to_pfn(VERSATILE_SYS_BASE), | |
193 | .length = SZ_4K, | |
194 | .type = MT_DEVICE | |
195 | }, { | |
196 | .virtual = IO_ADDRESS(VERSATILE_SIC_BASE), | |
197 | .pfn = __phys_to_pfn(VERSATILE_SIC_BASE), | |
198 | .length = SZ_4K, | |
199 | .type = MT_DEVICE | |
200 | }, { | |
201 | .virtual = IO_ADDRESS(VERSATILE_VIC_BASE), | |
202 | .pfn = __phys_to_pfn(VERSATILE_VIC_BASE), | |
203 | .length = SZ_4K, | |
204 | .type = MT_DEVICE | |
205 | }, { | |
206 | .virtual = IO_ADDRESS(VERSATILE_SCTL_BASE), | |
207 | .pfn = __phys_to_pfn(VERSATILE_SCTL_BASE), | |
208 | .length = SZ_4K * 9, | |
209 | .type = MT_DEVICE | |
210 | }, | |
1da177e4 | 211 | #ifdef CONFIG_MACH_VERSATILE_AB |
1311521f DS |
212 | { |
213 | .virtual = IO_ADDRESS(VERSATILE_GPIO0_BASE), | |
214 | .pfn = __phys_to_pfn(VERSATILE_GPIO0_BASE), | |
215 | .length = SZ_4K, | |
216 | .type = MT_DEVICE | |
217 | }, { | |
218 | .virtual = IO_ADDRESS(VERSATILE_IB2_BASE), | |
219 | .pfn = __phys_to_pfn(VERSATILE_IB2_BASE), | |
220 | .length = SZ_64M, | |
221 | .type = MT_DEVICE | |
222 | }, | |
1da177e4 LT |
223 | #endif |
224 | #ifdef CONFIG_DEBUG_LL | |
1311521f DS |
225 | { |
226 | .virtual = IO_ADDRESS(VERSATILE_UART0_BASE), | |
227 | .pfn = __phys_to_pfn(VERSATILE_UART0_BASE), | |
228 | .length = SZ_4K, | |
229 | .type = MT_DEVICE | |
230 | }, | |
1da177e4 | 231 | #endif |
c0da085a | 232 | #ifdef CONFIG_PCI |
1311521f DS |
233 | { |
234 | .virtual = IO_ADDRESS(VERSATILE_PCI_CORE_BASE), | |
235 | .pfn = __phys_to_pfn(VERSATILE_PCI_CORE_BASE), | |
236 | .length = SZ_4K, | |
237 | .type = MT_DEVICE | |
238 | }, { | |
239 | .virtual = VERSATILE_PCI_VIRT_BASE, | |
240 | .pfn = __phys_to_pfn(VERSATILE_PCI_BASE), | |
241 | .length = VERSATILE_PCI_BASE_SIZE, | |
242 | .type = MT_DEVICE | |
243 | }, { | |
244 | .virtual = VERSATILE_PCI_CFG_VIRT_BASE, | |
245 | .pfn = __phys_to_pfn(VERSATILE_PCI_CFG_BASE), | |
246 | .length = VERSATILE_PCI_CFG_BASE_SIZE, | |
247 | .type = MT_DEVICE | |
248 | }, | |
c0da085a | 249 | #if 0 |
1311521f DS |
250 | { |
251 | .virtual = VERSATILE_PCI_VIRT_MEM_BASE0, | |
252 | .pfn = __phys_to_pfn(VERSATILE_PCI_MEM_BASE0), | |
253 | .length = SZ_16M, | |
254 | .type = MT_DEVICE | |
255 | }, { | |
256 | .virtual = VERSATILE_PCI_VIRT_MEM_BASE1, | |
257 | .pfn = __phys_to_pfn(VERSATILE_PCI_MEM_BASE1), | |
258 | .length = SZ_16M, | |
259 | .type = MT_DEVICE | |
260 | }, { | |
261 | .virtual = VERSATILE_PCI_VIRT_MEM_BASE2, | |
262 | .pfn = __phys_to_pfn(VERSATILE_PCI_MEM_BASE2), | |
263 | .length = SZ_16M, | |
264 | .type = MT_DEVICE | |
265 | }, | |
c0da085a | 266 | #endif |
1da177e4 LT |
267 | #endif |
268 | }; | |
269 | ||
270 | void __init versatile_map_io(void) | |
271 | { | |
272 | iotable_init(versatile_io_desc, ARRAY_SIZE(versatile_io_desc)); | |
273 | } | |
274 | ||
2ad4f86b | 275 | #define VERSATILE_REFCOUNTER (__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_24MHz_OFFSET) |
1da177e4 LT |
276 | |
277 | /* | |
278 | * This is the Versatile sched_clock implementation. This has | |
279 | * a resolution of 41.7ns, and a maximum value of about 179s. | |
280 | */ | |
281 | unsigned long long sched_clock(void) | |
282 | { | |
283 | unsigned long long v; | |
284 | ||
285 | v = (unsigned long long)readl(VERSATILE_REFCOUNTER) * 125; | |
286 | do_div(v, 3); | |
287 | ||
288 | return v; | |
289 | } | |
290 | ||
291 | ||
2ad4f86b | 292 | #define VERSATILE_FLASHCTRL (__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_FLASH_OFFSET) |
1da177e4 LT |
293 | |
294 | static int versatile_flash_init(void) | |
295 | { | |
296 | u32 val; | |
297 | ||
298 | val = __raw_readl(VERSATILE_FLASHCTRL); | |
299 | val &= ~VERSATILE_FLASHPROG_FLVPPEN; | |
300 | __raw_writel(val, VERSATILE_FLASHCTRL); | |
301 | ||
302 | return 0; | |
303 | } | |
304 | ||
305 | static void versatile_flash_exit(void) | |
306 | { | |
307 | u32 val; | |
308 | ||
309 | val = __raw_readl(VERSATILE_FLASHCTRL); | |
310 | val &= ~VERSATILE_FLASHPROG_FLVPPEN; | |
311 | __raw_writel(val, VERSATILE_FLASHCTRL); | |
312 | } | |
313 | ||
314 | static void versatile_flash_set_vpp(int on) | |
315 | { | |
316 | u32 val; | |
317 | ||
318 | val = __raw_readl(VERSATILE_FLASHCTRL); | |
319 | if (on) | |
320 | val |= VERSATILE_FLASHPROG_FLVPPEN; | |
321 | else | |
322 | val &= ~VERSATILE_FLASHPROG_FLVPPEN; | |
323 | __raw_writel(val, VERSATILE_FLASHCTRL); | |
324 | } | |
325 | ||
326 | static struct flash_platform_data versatile_flash_data = { | |
327 | .map_name = "cfi_probe", | |
328 | .width = 4, | |
329 | .init = versatile_flash_init, | |
330 | .exit = versatile_flash_exit, | |
331 | .set_vpp = versatile_flash_set_vpp, | |
332 | }; | |
333 | ||
334 | static struct resource versatile_flash_resource = { | |
335 | .start = VERSATILE_FLASH_BASE, | |
336 | .end = VERSATILE_FLASH_BASE + VERSATILE_FLASH_SIZE, | |
337 | .flags = IORESOURCE_MEM, | |
338 | }; | |
339 | ||
340 | static struct platform_device versatile_flash_device = { | |
341 | .name = "armflash", | |
342 | .id = 0, | |
343 | .dev = { | |
344 | .platform_data = &versatile_flash_data, | |
345 | }, | |
346 | .num_resources = 1, | |
347 | .resource = &versatile_flash_resource, | |
348 | }; | |
349 | ||
350 | static struct resource smc91x_resources[] = { | |
351 | [0] = { | |
352 | .start = VERSATILE_ETH_BASE, | |
353 | .end = VERSATILE_ETH_BASE + SZ_64K - 1, | |
354 | .flags = IORESOURCE_MEM, | |
355 | }, | |
356 | [1] = { | |
357 | .start = IRQ_ETH, | |
358 | .end = IRQ_ETH, | |
359 | .flags = IORESOURCE_IRQ, | |
360 | }, | |
361 | }; | |
362 | ||
363 | static struct platform_device smc91x_device = { | |
364 | .name = "smc91x", | |
365 | .id = 0, | |
366 | .num_resources = ARRAY_SIZE(smc91x_resources), | |
367 | .resource = smc91x_resources, | |
368 | }; | |
369 | ||
2ad4f86b | 370 | #define VERSATILE_SYSMCI (__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_MCI_OFFSET) |
1da177e4 LT |
371 | |
372 | unsigned int mmc_status(struct device *dev) | |
373 | { | |
374 | struct amba_device *adev = container_of(dev, struct amba_device, dev); | |
375 | u32 mask; | |
376 | ||
377 | if (adev->res.start == VERSATILE_MMCI0_BASE) | |
378 | mask = 1; | |
379 | else | |
380 | mask = 2; | |
381 | ||
382 | return readl(VERSATILE_SYSMCI) & mask; | |
383 | } | |
384 | ||
385 | static struct mmc_platform_data mmc0_plat_data = { | |
386 | .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34, | |
387 | .status = mmc_status, | |
388 | }; | |
389 | ||
390 | /* | |
391 | * Clock handling | |
392 | */ | |
393 | static const struct icst307_params versatile_oscvco_params = { | |
394 | .ref = 24000, | |
395 | .vco_max = 200000, | |
396 | .vd_min = 4 + 8, | |
397 | .vd_max = 511 + 8, | |
398 | .rd_min = 1 + 2, | |
399 | .rd_max = 127 + 2, | |
400 | }; | |
401 | ||
402 | static void versatile_oscvco_set(struct clk *clk, struct icst307_vco vco) | |
403 | { | |
2ad4f86b | 404 | void __iomem *sys_lock = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_LOCK_OFFSET; |
1da177e4 | 405 | #if defined(CONFIG_ARCH_VERSATILE_PB) |
2ad4f86b | 406 | void __iomem *sys_osc = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_OSC4_OFFSET; |
1da177e4 | 407 | #elif defined(CONFIG_MACH_VERSATILE_AB) |
2ad4f86b | 408 | void __iomem *sys_osc = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_OSC1_OFFSET; |
1da177e4 LT |
409 | #endif |
410 | u32 val; | |
411 | ||
412 | val = readl(sys_osc) & ~0x7ffff; | |
413 | val |= vco.v | (vco.r << 9) | (vco.s << 16); | |
414 | ||
415 | writel(0xa05f, sys_lock); | |
416 | writel(val, sys_osc); | |
417 | writel(0, sys_lock); | |
418 | } | |
419 | ||
420 | static struct clk versatile_clcd_clk = { | |
421 | .name = "CLCDCLK", | |
422 | .params = &versatile_oscvco_params, | |
423 | .setvco = versatile_oscvco_set, | |
424 | }; | |
425 | ||
426 | /* | |
427 | * CLCD support. | |
428 | */ | |
429 | #define SYS_CLCD_MODE_MASK (3 << 0) | |
430 | #define SYS_CLCD_MODE_888 (0 << 0) | |
431 | #define SYS_CLCD_MODE_5551 (1 << 0) | |
432 | #define SYS_CLCD_MODE_565_RLSB (2 << 0) | |
433 | #define SYS_CLCD_MODE_565_BLSB (3 << 0) | |
434 | #define SYS_CLCD_NLCDIOON (1 << 2) | |
435 | #define SYS_CLCD_VDDPOSSWITCH (1 << 3) | |
436 | #define SYS_CLCD_PWR3V5SWITCH (1 << 4) | |
437 | #define SYS_CLCD_ID_MASK (0x1f << 8) | |
438 | #define SYS_CLCD_ID_SANYO_3_8 (0x00 << 8) | |
439 | #define SYS_CLCD_ID_UNKNOWN_8_4 (0x01 << 8) | |
440 | #define SYS_CLCD_ID_EPSON_2_2 (0x02 << 8) | |
441 | #define SYS_CLCD_ID_SANYO_2_5 (0x07 << 8) | |
442 | #define SYS_CLCD_ID_VGA (0x1f << 8) | |
443 | ||
444 | static struct clcd_panel vga = { | |
445 | .mode = { | |
446 | .name = "VGA", | |
447 | .refresh = 60, | |
448 | .xres = 640, | |
449 | .yres = 480, | |
450 | .pixclock = 39721, | |
451 | .left_margin = 40, | |
452 | .right_margin = 24, | |
453 | .upper_margin = 32, | |
454 | .lower_margin = 11, | |
455 | .hsync_len = 96, | |
456 | .vsync_len = 2, | |
457 | .sync = 0, | |
458 | .vmode = FB_VMODE_NONINTERLACED, | |
459 | }, | |
460 | .width = -1, | |
461 | .height = -1, | |
462 | .tim2 = TIM2_BCD | TIM2_IPC, | |
463 | .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1), | |
464 | .bpp = 16, | |
465 | }; | |
466 | ||
467 | static struct clcd_panel sanyo_3_8_in = { | |
468 | .mode = { | |
469 | .name = "Sanyo QVGA", | |
470 | .refresh = 116, | |
471 | .xres = 320, | |
472 | .yres = 240, | |
473 | .pixclock = 100000, | |
474 | .left_margin = 6, | |
475 | .right_margin = 6, | |
476 | .upper_margin = 5, | |
477 | .lower_margin = 5, | |
478 | .hsync_len = 6, | |
479 | .vsync_len = 6, | |
480 | .sync = 0, | |
481 | .vmode = FB_VMODE_NONINTERLACED, | |
482 | }, | |
483 | .width = -1, | |
484 | .height = -1, | |
485 | .tim2 = TIM2_BCD, | |
486 | .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1), | |
487 | .bpp = 16, | |
488 | }; | |
489 | ||
490 | static struct clcd_panel sanyo_2_5_in = { | |
491 | .mode = { | |
492 | .name = "Sanyo QVGA Portrait", | |
493 | .refresh = 116, | |
494 | .xres = 240, | |
495 | .yres = 320, | |
496 | .pixclock = 100000, | |
497 | .left_margin = 20, | |
498 | .right_margin = 10, | |
499 | .upper_margin = 2, | |
500 | .lower_margin = 2, | |
501 | .hsync_len = 10, | |
502 | .vsync_len = 2, | |
503 | .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
504 | .vmode = FB_VMODE_NONINTERLACED, | |
505 | }, | |
506 | .width = -1, | |
507 | .height = -1, | |
508 | .tim2 = TIM2_IVS | TIM2_IHS | TIM2_IPC, | |
509 | .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1), | |
510 | .bpp = 16, | |
511 | }; | |
512 | ||
513 | static struct clcd_panel epson_2_2_in = { | |
514 | .mode = { | |
515 | .name = "Epson QCIF", | |
516 | .refresh = 390, | |
517 | .xres = 176, | |
518 | .yres = 220, | |
519 | .pixclock = 62500, | |
520 | .left_margin = 3, | |
521 | .right_margin = 2, | |
522 | .upper_margin = 1, | |
523 | .lower_margin = 0, | |
524 | .hsync_len = 3, | |
525 | .vsync_len = 2, | |
526 | .sync = 0, | |
527 | .vmode = FB_VMODE_NONINTERLACED, | |
528 | }, | |
529 | .width = -1, | |
530 | .height = -1, | |
531 | .tim2 = TIM2_BCD | TIM2_IPC, | |
532 | .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1), | |
533 | .bpp = 16, | |
534 | }; | |
535 | ||
536 | /* | |
537 | * Detect which LCD panel is connected, and return the appropriate | |
538 | * clcd_panel structure. Note: we do not have any information on | |
539 | * the required timings for the 8.4in panel, so we presently assume | |
540 | * VGA timings. | |
541 | */ | |
542 | static struct clcd_panel *versatile_clcd_panel(void) | |
543 | { | |
2ad4f86b | 544 | void __iomem *sys_clcd = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_CLCD_OFFSET; |
1da177e4 LT |
545 | struct clcd_panel *panel = &vga; |
546 | u32 val; | |
547 | ||
548 | val = readl(sys_clcd) & SYS_CLCD_ID_MASK; | |
549 | if (val == SYS_CLCD_ID_SANYO_3_8) | |
550 | panel = &sanyo_3_8_in; | |
551 | else if (val == SYS_CLCD_ID_SANYO_2_5) | |
552 | panel = &sanyo_2_5_in; | |
553 | else if (val == SYS_CLCD_ID_EPSON_2_2) | |
554 | panel = &epson_2_2_in; | |
555 | else if (val == SYS_CLCD_ID_VGA) | |
556 | panel = &vga; | |
557 | else { | |
558 | printk(KERN_ERR "CLCD: unknown LCD panel ID 0x%08x, using VGA\n", | |
559 | val); | |
560 | panel = &vga; | |
561 | } | |
562 | ||
563 | return panel; | |
564 | } | |
565 | ||
566 | /* | |
567 | * Disable all display connectors on the interface module. | |
568 | */ | |
569 | static void versatile_clcd_disable(struct clcd_fb *fb) | |
570 | { | |
2ad4f86b | 571 | void __iomem *sys_clcd = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_CLCD_OFFSET; |
1da177e4 LT |
572 | u32 val; |
573 | ||
574 | val = readl(sys_clcd); | |
575 | val &= ~SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH; | |
576 | writel(val, sys_clcd); | |
577 | ||
578 | #ifdef CONFIG_MACH_VERSATILE_AB | |
579 | /* | |
580 | * If the LCD is Sanyo 2x5 in on the IB2 board, turn the back-light off | |
581 | */ | |
582 | if (fb->panel == &sanyo_2_5_in) { | |
2ad4f86b | 583 | void __iomem *versatile_ib2_ctrl = __io_address(VERSATILE_IB2_CTRL); |
1da177e4 LT |
584 | unsigned long ctrl; |
585 | ||
586 | ctrl = readl(versatile_ib2_ctrl); | |
587 | ctrl &= ~0x01; | |
588 | writel(ctrl, versatile_ib2_ctrl); | |
589 | } | |
590 | #endif | |
591 | } | |
592 | ||
593 | /* | |
594 | * Enable the relevant connector on the interface module. | |
595 | */ | |
596 | static void versatile_clcd_enable(struct clcd_fb *fb) | |
597 | { | |
2ad4f86b | 598 | void __iomem *sys_clcd = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_CLCD_OFFSET; |
1da177e4 LT |
599 | u32 val; |
600 | ||
601 | val = readl(sys_clcd); | |
602 | val &= ~SYS_CLCD_MODE_MASK; | |
603 | ||
604 | switch (fb->fb.var.green.length) { | |
605 | case 5: | |
606 | val |= SYS_CLCD_MODE_5551; | |
607 | break; | |
608 | case 6: | |
90ef713b | 609 | val |= SYS_CLCD_MODE_565_RLSB; |
1da177e4 LT |
610 | break; |
611 | case 8: | |
612 | val |= SYS_CLCD_MODE_888; | |
613 | break; | |
614 | } | |
615 | ||
616 | /* | |
617 | * Set the MUX | |
618 | */ | |
619 | writel(val, sys_clcd); | |
620 | ||
621 | /* | |
622 | * And now enable the PSUs | |
623 | */ | |
624 | val |= SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH; | |
625 | writel(val, sys_clcd); | |
626 | ||
627 | #ifdef CONFIG_MACH_VERSATILE_AB | |
628 | /* | |
629 | * If the LCD is Sanyo 2x5 in on the IB2 board, turn the back-light on | |
630 | */ | |
631 | if (fb->panel == &sanyo_2_5_in) { | |
2ad4f86b | 632 | void __iomem *versatile_ib2_ctrl = __io_address(VERSATILE_IB2_CTRL); |
1da177e4 LT |
633 | unsigned long ctrl; |
634 | ||
635 | ctrl = readl(versatile_ib2_ctrl); | |
636 | ctrl |= 0x01; | |
637 | writel(ctrl, versatile_ib2_ctrl); | |
638 | } | |
639 | #endif | |
640 | } | |
641 | ||
642 | static unsigned long framesize = SZ_1M; | |
643 | ||
644 | static int versatile_clcd_setup(struct clcd_fb *fb) | |
645 | { | |
646 | dma_addr_t dma; | |
647 | ||
648 | fb->panel = versatile_clcd_panel(); | |
649 | ||
650 | fb->fb.screen_base = dma_alloc_writecombine(&fb->dev->dev, framesize, | |
651 | &dma, GFP_KERNEL); | |
652 | if (!fb->fb.screen_base) { | |
653 | printk(KERN_ERR "CLCD: unable to map framebuffer\n"); | |
654 | return -ENOMEM; | |
655 | } | |
656 | ||
657 | fb->fb.fix.smem_start = dma; | |
658 | fb->fb.fix.smem_len = framesize; | |
659 | ||
660 | return 0; | |
661 | } | |
662 | ||
663 | static int versatile_clcd_mmap(struct clcd_fb *fb, struct vm_area_struct *vma) | |
664 | { | |
665 | return dma_mmap_writecombine(&fb->dev->dev, vma, | |
666 | fb->fb.screen_base, | |
667 | fb->fb.fix.smem_start, | |
668 | fb->fb.fix.smem_len); | |
669 | } | |
670 | ||
671 | static void versatile_clcd_remove(struct clcd_fb *fb) | |
672 | { | |
673 | dma_free_writecombine(&fb->dev->dev, fb->fb.fix.smem_len, | |
674 | fb->fb.screen_base, fb->fb.fix.smem_start); | |
675 | } | |
676 | ||
677 | static struct clcd_board clcd_plat_data = { | |
678 | .name = "Versatile", | |
679 | .check = clcdfb_check, | |
680 | .decode = clcdfb_decode, | |
681 | .disable = versatile_clcd_disable, | |
682 | .enable = versatile_clcd_enable, | |
683 | .setup = versatile_clcd_setup, | |
684 | .mmap = versatile_clcd_mmap, | |
685 | .remove = versatile_clcd_remove, | |
686 | }; | |
687 | ||
688 | #define AACI_IRQ { IRQ_AACI, NO_IRQ } | |
689 | #define AACI_DMA { 0x80, 0x81 } | |
690 | #define MMCI0_IRQ { IRQ_MMCI0A,IRQ_SIC_MMCI0B } | |
691 | #define MMCI0_DMA { 0x84, 0 } | |
692 | #define KMI0_IRQ { IRQ_SIC_KMI0, NO_IRQ } | |
693 | #define KMI0_DMA { 0, 0 } | |
694 | #define KMI1_IRQ { IRQ_SIC_KMI1, NO_IRQ } | |
695 | #define KMI1_DMA { 0, 0 } | |
696 | ||
697 | /* | |
698 | * These devices are connected directly to the multi-layer AHB switch | |
699 | */ | |
700 | #define SMC_IRQ { NO_IRQ, NO_IRQ } | |
701 | #define SMC_DMA { 0, 0 } | |
702 | #define MPMC_IRQ { NO_IRQ, NO_IRQ } | |
703 | #define MPMC_DMA { 0, 0 } | |
704 | #define CLCD_IRQ { IRQ_CLCDINT, NO_IRQ } | |
705 | #define CLCD_DMA { 0, 0 } | |
706 | #define DMAC_IRQ { IRQ_DMAINT, NO_IRQ } | |
707 | #define DMAC_DMA { 0, 0 } | |
708 | ||
709 | /* | |
710 | * These devices are connected via the core APB bridge | |
711 | */ | |
712 | #define SCTL_IRQ { NO_IRQ, NO_IRQ } | |
713 | #define SCTL_DMA { 0, 0 } | |
714 | #define WATCHDOG_IRQ { IRQ_WDOGINT, NO_IRQ } | |
715 | #define WATCHDOG_DMA { 0, 0 } | |
716 | #define GPIO0_IRQ { IRQ_GPIOINT0, NO_IRQ } | |
717 | #define GPIO0_DMA { 0, 0 } | |
718 | #define GPIO1_IRQ { IRQ_GPIOINT1, NO_IRQ } | |
719 | #define GPIO1_DMA { 0, 0 } | |
720 | #define RTC_IRQ { IRQ_RTCINT, NO_IRQ } | |
721 | #define RTC_DMA { 0, 0 } | |
722 | ||
723 | /* | |
724 | * These devices are connected via the DMA APB bridge | |
725 | */ | |
726 | #define SCI_IRQ { IRQ_SCIINT, NO_IRQ } | |
727 | #define SCI_DMA { 7, 6 } | |
728 | #define UART0_IRQ { IRQ_UARTINT0, NO_IRQ } | |
729 | #define UART0_DMA { 15, 14 } | |
730 | #define UART1_IRQ { IRQ_UARTINT1, NO_IRQ } | |
731 | #define UART1_DMA { 13, 12 } | |
732 | #define UART2_IRQ { IRQ_UARTINT2, NO_IRQ } | |
733 | #define UART2_DMA { 11, 10 } | |
734 | #define SSP_IRQ { IRQ_SSPINT, NO_IRQ } | |
735 | #define SSP_DMA { 9, 8 } | |
736 | ||
737 | /* FPGA Primecells */ | |
738 | AMBA_DEVICE(aaci, "fpga:04", AACI, NULL); | |
739 | AMBA_DEVICE(mmc0, "fpga:05", MMCI0, &mmc0_plat_data); | |
740 | AMBA_DEVICE(kmi0, "fpga:06", KMI0, NULL); | |
741 | AMBA_DEVICE(kmi1, "fpga:07", KMI1, NULL); | |
742 | ||
743 | /* DevChip Primecells */ | |
744 | AMBA_DEVICE(smc, "dev:00", SMC, NULL); | |
745 | AMBA_DEVICE(mpmc, "dev:10", MPMC, NULL); | |
746 | AMBA_DEVICE(clcd, "dev:20", CLCD, &clcd_plat_data); | |
747 | AMBA_DEVICE(dmac, "dev:30", DMAC, NULL); | |
748 | AMBA_DEVICE(sctl, "dev:e0", SCTL, NULL); | |
749 | AMBA_DEVICE(wdog, "dev:e1", WATCHDOG, NULL); | |
750 | AMBA_DEVICE(gpio0, "dev:e4", GPIO0, NULL); | |
751 | AMBA_DEVICE(gpio1, "dev:e5", GPIO1, NULL); | |
752 | AMBA_DEVICE(rtc, "dev:e8", RTC, NULL); | |
753 | AMBA_DEVICE(sci0, "dev:f0", SCI, NULL); | |
754 | AMBA_DEVICE(uart0, "dev:f1", UART0, NULL); | |
755 | AMBA_DEVICE(uart1, "dev:f2", UART1, NULL); | |
756 | AMBA_DEVICE(uart2, "dev:f3", UART2, NULL); | |
757 | AMBA_DEVICE(ssp0, "dev:f4", SSP, NULL); | |
758 | ||
759 | static struct amba_device *amba_devs[] __initdata = { | |
760 | &dmac_device, | |
761 | &uart0_device, | |
762 | &uart1_device, | |
763 | &uart2_device, | |
764 | &smc_device, | |
765 | &mpmc_device, | |
766 | &clcd_device, | |
767 | &sctl_device, | |
768 | &wdog_device, | |
769 | &gpio0_device, | |
770 | &gpio1_device, | |
771 | &rtc_device, | |
772 | &sci0_device, | |
773 | &ssp0_device, | |
774 | &aaci_device, | |
775 | &mmc0_device, | |
776 | &kmi0_device, | |
777 | &kmi1_device, | |
778 | }; | |
779 | ||
780 | #ifdef CONFIG_LEDS | |
2ad4f86b | 781 | #define VA_LEDS_BASE (__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_LED_OFFSET) |
1da177e4 LT |
782 | |
783 | static void versatile_leds_event(led_event_t ledevt) | |
784 | { | |
785 | unsigned long flags; | |
786 | u32 val; | |
787 | ||
788 | local_irq_save(flags); | |
789 | val = readl(VA_LEDS_BASE); | |
790 | ||
791 | switch (ledevt) { | |
792 | case led_idle_start: | |
793 | val = val & ~VERSATILE_SYS_LED0; | |
794 | break; | |
795 | ||
796 | case led_idle_end: | |
797 | val = val | VERSATILE_SYS_LED0; | |
798 | break; | |
799 | ||
800 | case led_timer: | |
801 | val = val ^ VERSATILE_SYS_LED1; | |
802 | break; | |
803 | ||
804 | case led_halted: | |
805 | val = 0; | |
806 | break; | |
807 | ||
808 | default: | |
809 | break; | |
810 | } | |
811 | ||
812 | writel(val, VA_LEDS_BASE); | |
813 | local_irq_restore(flags); | |
814 | } | |
815 | #endif /* CONFIG_LEDS */ | |
816 | ||
817 | void __init versatile_init(void) | |
818 | { | |
819 | int i; | |
820 | ||
821 | clk_register(&versatile_clcd_clk); | |
822 | ||
823 | platform_device_register(&versatile_flash_device); | |
824 | platform_device_register(&smc91x_device); | |
825 | ||
826 | for (i = 0; i < ARRAY_SIZE(amba_devs); i++) { | |
827 | struct amba_device *d = amba_devs[i]; | |
828 | amba_device_register(d, &iomem_resource); | |
829 | } | |
830 | ||
831 | #ifdef CONFIG_LEDS | |
832 | leds_event = versatile_leds_event; | |
833 | #endif | |
834 | } | |
835 | ||
836 | /* | |
837 | * Where is the timer (VA)? | |
838 | */ | |
2ad4f86b AV |
839 | #define TIMER0_VA_BASE __io_address(VERSATILE_TIMER0_1_BASE) |
840 | #define TIMER1_VA_BASE (__io_address(VERSATILE_TIMER0_1_BASE) + 0x20) | |
841 | #define TIMER2_VA_BASE __io_address(VERSATILE_TIMER2_3_BASE) | |
842 | #define TIMER3_VA_BASE (__io_address(VERSATILE_TIMER2_3_BASE) + 0x20) | |
843 | #define VA_IC_BASE __io_address(VERSATILE_VIC_BASE) | |
1da177e4 LT |
844 | |
845 | /* | |
846 | * How long is the timer interval? | |
847 | */ | |
848 | #define TIMER_INTERVAL (TICKS_PER_uSEC * mSEC_10) | |
849 | #if TIMER_INTERVAL >= 0x100000 | |
b720f732 RK |
850 | #define TIMER_RELOAD (TIMER_INTERVAL >> 8) |
851 | #define TIMER_DIVISOR (TIMER_CTRL_DIV256) | |
1da177e4 LT |
852 | #define TICKS2USECS(x) (256 * (x) / TICKS_PER_uSEC) |
853 | #elif TIMER_INTERVAL >= 0x10000 | |
854 | #define TIMER_RELOAD (TIMER_INTERVAL >> 4) /* Divide by 16 */ | |
b720f732 | 855 | #define TIMER_DIVISOR (TIMER_CTRL_DIV16) |
1da177e4 LT |
856 | #define TICKS2USECS(x) (16 * (x) / TICKS_PER_uSEC) |
857 | #else | |
858 | #define TIMER_RELOAD (TIMER_INTERVAL) | |
b720f732 | 859 | #define TIMER_DIVISOR (TIMER_CTRL_DIV1) |
1da177e4 LT |
860 | #define TICKS2USECS(x) ((x) / TICKS_PER_uSEC) |
861 | #endif | |
862 | ||
1da177e4 LT |
863 | /* |
864 | * Returns number of ms since last clock interrupt. Note that interrupts | |
865 | * will have been disabled by do_gettimeoffset() | |
866 | */ | |
867 | static unsigned long versatile_gettimeoffset(void) | |
868 | { | |
1da177e4 LT |
869 | unsigned long ticks1, ticks2, status; |
870 | ||
871 | /* | |
872 | * Get the current number of ticks. Note that there is a race | |
873 | * condition between us reading the timer and checking for | |
874 | * an interrupt. We get around this by ensuring that the | |
875 | * counter has not reloaded between our two reads. | |
876 | */ | |
b720f732 | 877 | ticks2 = readl(TIMER0_VA_BASE + TIMER_VALUE) & 0xffff; |
1da177e4 LT |
878 | do { |
879 | ticks1 = ticks2; | |
880 | status = __raw_readl(VA_IC_BASE + VIC_IRQ_RAW_STATUS); | |
b720f732 | 881 | ticks2 = readl(TIMER0_VA_BASE + TIMER_VALUE) & 0xffff; |
1da177e4 LT |
882 | } while (ticks2 > ticks1); |
883 | ||
884 | /* | |
885 | * Number of ticks since last interrupt. | |
886 | */ | |
887 | ticks1 = TIMER_RELOAD - ticks2; | |
888 | ||
889 | /* | |
890 | * Interrupt pending? If so, we've reloaded once already. | |
891 | * | |
892 | * FIXME: Need to check this is effectively timer 0 that expires | |
893 | */ | |
894 | if (status & IRQMASK_TIMERINT0_1) | |
895 | ticks1 += TIMER_RELOAD; | |
896 | ||
897 | /* | |
898 | * Convert the ticks to usecs | |
899 | */ | |
900 | return TICKS2USECS(ticks1); | |
901 | } | |
902 | ||
903 | /* | |
904 | * IRQ handler for the timer | |
905 | */ | |
906 | static irqreturn_t versatile_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs) | |
907 | { | |
1da177e4 LT |
908 | write_seqlock(&xtime_lock); |
909 | ||
910 | // ...clear the interrupt | |
b720f732 | 911 | writel(1, TIMER0_VA_BASE + TIMER_INTCLR); |
1da177e4 LT |
912 | |
913 | timer_tick(regs); | |
914 | ||
915 | write_sequnlock(&xtime_lock); | |
916 | ||
917 | return IRQ_HANDLED; | |
918 | } | |
919 | ||
920 | static struct irqaction versatile_timer_irq = { | |
921 | .name = "Versatile Timer Tick", | |
09b8b5f8 RK |
922 | .flags = SA_INTERRUPT | SA_TIMER, |
923 | .handler = versatile_timer_interrupt, | |
1da177e4 LT |
924 | }; |
925 | ||
926 | /* | |
927 | * Set up timer interrupt, and return the current time in seconds. | |
928 | */ | |
929 | static void __init versatile_timer_init(void) | |
930 | { | |
b720f732 | 931 | u32 val; |
1da177e4 LT |
932 | |
933 | /* | |
934 | * set clock frequency: | |
935 | * VERSATILE_REFCLK is 32KHz | |
936 | * VERSATILE_TIMCLK is 1MHz | |
937 | */ | |
2ad4f86b | 938 | val = readl(__io_address(VERSATILE_SCTL_BASE)); |
b720f732 RK |
939 | writel((VERSATILE_TIMCLK << VERSATILE_TIMER1_EnSel) | |
940 | (VERSATILE_TIMCLK << VERSATILE_TIMER2_EnSel) | | |
941 | (VERSATILE_TIMCLK << VERSATILE_TIMER3_EnSel) | | |
942 | (VERSATILE_TIMCLK << VERSATILE_TIMER4_EnSel) | val, | |
2ad4f86b | 943 | __io_address(VERSATILE_SCTL_BASE)); |
1da177e4 LT |
944 | |
945 | /* | |
946 | * Initialise to a known state (all timers off) | |
947 | */ | |
b720f732 RK |
948 | writel(0, TIMER0_VA_BASE + TIMER_CTRL); |
949 | writel(0, TIMER1_VA_BASE + TIMER_CTRL); | |
950 | writel(0, TIMER2_VA_BASE + TIMER_CTRL); | |
951 | writel(0, TIMER3_VA_BASE + TIMER_CTRL); | |
952 | ||
953 | writel(TIMER_RELOAD, TIMER0_VA_BASE + TIMER_LOAD); | |
954 | writel(TIMER_RELOAD, TIMER0_VA_BASE + TIMER_VALUE); | |
955 | writel(TIMER_DIVISOR | TIMER_CTRL_ENABLE | TIMER_CTRL_PERIODIC | | |
956 | TIMER_CTRL_IE, TIMER0_VA_BASE + TIMER_CTRL); | |
1da177e4 LT |
957 | |
958 | /* | |
959 | * Make irqs happen for the system timer | |
960 | */ | |
961 | setup_irq(IRQ_TIMERINT0_1, &versatile_timer_irq); | |
962 | } | |
963 | ||
964 | struct sys_timer versatile_timer = { | |
965 | .init = versatile_timer_init, | |
966 | .offset = versatile_gettimeoffset, | |
967 | }; |