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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 | */ | |
1da177e4 LT |
21 | #include <linux/init.h> |
22 | #include <linux/device.h> | |
23 | #include <linux/dma-mapping.h> | |
d052d1be | 24 | #include <linux/platform_device.h> |
1da177e4 LT |
25 | #include <linux/sysdev.h> |
26 | #include <linux/interrupt.h> | |
a62c80e5 RK |
27 | #include <linux/amba/bus.h> |
28 | #include <linux/amba/clcd.h> | |
1da177e4 | 29 | |
752bee17 | 30 | #include <asm/cnt32_to_63.h> |
1da177e4 LT |
31 | #include <asm/system.h> |
32 | #include <asm/hardware.h> | |
33 | #include <asm/io.h> | |
34 | #include <asm/irq.h> | |
35 | #include <asm/leds.h> | |
b720f732 | 36 | #include <asm/hardware/arm_timer.h> |
1da177e4 | 37 | #include <asm/hardware/icst307.h> |
fa0fe48f | 38 | #include <asm/hardware/vic.h> |
dc5bc8f1 | 39 | #include <asm/mach-types.h> |
1da177e4 LT |
40 | |
41 | #include <asm/mach/arch.h> | |
42 | #include <asm/mach/flash.h> | |
43 | #include <asm/mach/irq.h> | |
44 | #include <asm/mach/time.h> | |
45 | #include <asm/mach/map.h> | |
46 | #include <asm/mach/mmc.h> | |
47 | ||
48 | #include "core.h" | |
49 | #include "clock.h" | |
50 | ||
51 | /* | |
52 | * All IO addresses are mapped onto VA 0xFFFx.xxxx, where x.xxxx | |
53 | * is the (PA >> 12). | |
54 | * | |
55 | * Setup a VA for the Versatile Vectored Interrupt Controller. | |
56 | */ | |
2ad4f86b AV |
57 | #define __io_address(n) __io(IO_ADDRESS(n)) |
58 | #define VA_VIC_BASE __io_address(VERSATILE_VIC_BASE) | |
59 | #define VA_SIC_BASE __io_address(VERSATILE_SIC_BASE) | |
1da177e4 | 60 | |
1da177e4 LT |
61 | static void sic_mask_irq(unsigned int irq) |
62 | { | |
63 | irq -= IRQ_SIC_START; | |
64 | writel(1 << irq, VA_SIC_BASE + SIC_IRQ_ENABLE_CLEAR); | |
65 | } | |
66 | ||
67 | static void sic_unmask_irq(unsigned int irq) | |
68 | { | |
69 | irq -= IRQ_SIC_START; | |
70 | writel(1 << irq, VA_SIC_BASE + SIC_IRQ_ENABLE_SET); | |
71 | } | |
72 | ||
38c677cb DB |
73 | static struct irq_chip sic_chip = { |
74 | .name = "SIC", | |
1da177e4 LT |
75 | .ack = sic_mask_irq, |
76 | .mask = sic_mask_irq, | |
77 | .unmask = sic_unmask_irq, | |
78 | }; | |
79 | ||
80 | static void | |
10dd5ce2 | 81 | sic_handle_irq(unsigned int irq, struct irq_desc *desc) |
1da177e4 LT |
82 | { |
83 | unsigned long status = readl(VA_SIC_BASE + SIC_IRQ_STATUS); | |
84 | ||
85 | if (status == 0) { | |
0cd61b68 | 86 | do_bad_IRQ(irq, desc); |
1da177e4 LT |
87 | return; |
88 | } | |
89 | ||
90 | do { | |
91 | irq = ffs(status) - 1; | |
92 | status &= ~(1 << irq); | |
93 | ||
94 | irq += IRQ_SIC_START; | |
95 | ||
96 | desc = irq_desc + irq; | |
0cd61b68 | 97 | desc_handle_irq(irq, desc); |
1da177e4 LT |
98 | } while (status); |
99 | } | |
100 | ||
101 | #if 1 | |
102 | #define IRQ_MMCI0A IRQ_VICSOURCE22 | |
103 | #define IRQ_AACI IRQ_VICSOURCE24 | |
104 | #define IRQ_ETH IRQ_VICSOURCE25 | |
105 | #define PIC_MASK 0xFFD00000 | |
106 | #else | |
107 | #define IRQ_MMCI0A IRQ_SIC_MMCI0A | |
108 | #define IRQ_AACI IRQ_SIC_AACI | |
109 | #define IRQ_ETH IRQ_SIC_ETH | |
110 | #define PIC_MASK 0 | |
111 | #endif | |
112 | ||
113 | void __init versatile_init_irq(void) | |
114 | { | |
fa0fe48f | 115 | unsigned int i; |
1da177e4 | 116 | |
56f1319e | 117 | vic_init(VA_VIC_BASE, IRQ_VIC_START, ~0); |
1da177e4 | 118 | |
56f1319e | 119 | set_irq_chained_handler(IRQ_VICSOURCE31, sic_handle_irq); |
1da177e4 LT |
120 | |
121 | /* Do second interrupt controller */ | |
122 | writel(~0, VA_SIC_BASE + SIC_IRQ_ENABLE_CLEAR); | |
123 | ||
124 | for (i = IRQ_SIC_START; i <= IRQ_SIC_END; i++) { | |
125 | if ((PIC_MASK & (1 << (i - IRQ_SIC_START))) == 0) { | |
126 | set_irq_chip(i, &sic_chip); | |
10dd5ce2 | 127 | set_irq_handler(i, handle_level_irq); |
1da177e4 LT |
128 | set_irq_flags(i, IRQF_VALID | IRQF_PROBE); |
129 | } | |
130 | } | |
131 | ||
132 | /* | |
133 | * Interrupts on secondary controller from 0 to 8 are routed to | |
134 | * source 31 on PIC. | |
135 | * Interrupts from 21 to 31 are routed directly to the VIC on | |
136 | * the corresponding number on primary controller. This is controlled | |
137 | * by setting PIC_ENABLEx. | |
138 | */ | |
139 | writel(PIC_MASK, VA_SIC_BASE + SIC_INT_PIC_ENABLE); | |
140 | } | |
141 | ||
142 | static struct map_desc versatile_io_desc[] __initdata = { | |
1311521f DS |
143 | { |
144 | .virtual = IO_ADDRESS(VERSATILE_SYS_BASE), | |
145 | .pfn = __phys_to_pfn(VERSATILE_SYS_BASE), | |
146 | .length = SZ_4K, | |
147 | .type = MT_DEVICE | |
148 | }, { | |
149 | .virtual = IO_ADDRESS(VERSATILE_SIC_BASE), | |
150 | .pfn = __phys_to_pfn(VERSATILE_SIC_BASE), | |
151 | .length = SZ_4K, | |
152 | .type = MT_DEVICE | |
153 | }, { | |
154 | .virtual = IO_ADDRESS(VERSATILE_VIC_BASE), | |
155 | .pfn = __phys_to_pfn(VERSATILE_VIC_BASE), | |
156 | .length = SZ_4K, | |
157 | .type = MT_DEVICE | |
158 | }, { | |
159 | .virtual = IO_ADDRESS(VERSATILE_SCTL_BASE), | |
160 | .pfn = __phys_to_pfn(VERSATILE_SCTL_BASE), | |
161 | .length = SZ_4K * 9, | |
162 | .type = MT_DEVICE | |
163 | }, | |
1da177e4 | 164 | #ifdef CONFIG_MACH_VERSATILE_AB |
1311521f DS |
165 | { |
166 | .virtual = IO_ADDRESS(VERSATILE_GPIO0_BASE), | |
167 | .pfn = __phys_to_pfn(VERSATILE_GPIO0_BASE), | |
168 | .length = SZ_4K, | |
169 | .type = MT_DEVICE | |
170 | }, { | |
171 | .virtual = IO_ADDRESS(VERSATILE_IB2_BASE), | |
172 | .pfn = __phys_to_pfn(VERSATILE_IB2_BASE), | |
173 | .length = SZ_64M, | |
174 | .type = MT_DEVICE | |
175 | }, | |
1da177e4 LT |
176 | #endif |
177 | #ifdef CONFIG_DEBUG_LL | |
1311521f DS |
178 | { |
179 | .virtual = IO_ADDRESS(VERSATILE_UART0_BASE), | |
180 | .pfn = __phys_to_pfn(VERSATILE_UART0_BASE), | |
181 | .length = SZ_4K, | |
182 | .type = MT_DEVICE | |
183 | }, | |
1da177e4 | 184 | #endif |
c0da085a | 185 | #ifdef CONFIG_PCI |
1311521f DS |
186 | { |
187 | .virtual = IO_ADDRESS(VERSATILE_PCI_CORE_BASE), | |
188 | .pfn = __phys_to_pfn(VERSATILE_PCI_CORE_BASE), | |
189 | .length = SZ_4K, | |
190 | .type = MT_DEVICE | |
191 | }, { | |
399ad77b | 192 | .virtual = (unsigned long)VERSATILE_PCI_VIRT_BASE, |
1311521f DS |
193 | .pfn = __phys_to_pfn(VERSATILE_PCI_BASE), |
194 | .length = VERSATILE_PCI_BASE_SIZE, | |
195 | .type = MT_DEVICE | |
196 | }, { | |
399ad77b | 197 | .virtual = (unsigned long)VERSATILE_PCI_CFG_VIRT_BASE, |
1311521f DS |
198 | .pfn = __phys_to_pfn(VERSATILE_PCI_CFG_BASE), |
199 | .length = VERSATILE_PCI_CFG_BASE_SIZE, | |
200 | .type = MT_DEVICE | |
201 | }, | |
c0da085a | 202 | #if 0 |
1311521f DS |
203 | { |
204 | .virtual = VERSATILE_PCI_VIRT_MEM_BASE0, | |
205 | .pfn = __phys_to_pfn(VERSATILE_PCI_MEM_BASE0), | |
206 | .length = SZ_16M, | |
207 | .type = MT_DEVICE | |
208 | }, { | |
209 | .virtual = VERSATILE_PCI_VIRT_MEM_BASE1, | |
210 | .pfn = __phys_to_pfn(VERSATILE_PCI_MEM_BASE1), | |
211 | .length = SZ_16M, | |
212 | .type = MT_DEVICE | |
213 | }, { | |
214 | .virtual = VERSATILE_PCI_VIRT_MEM_BASE2, | |
215 | .pfn = __phys_to_pfn(VERSATILE_PCI_MEM_BASE2), | |
216 | .length = SZ_16M, | |
217 | .type = MT_DEVICE | |
218 | }, | |
c0da085a | 219 | #endif |
1da177e4 LT |
220 | #endif |
221 | }; | |
222 | ||
223 | void __init versatile_map_io(void) | |
224 | { | |
225 | iotable_init(versatile_io_desc, ARRAY_SIZE(versatile_io_desc)); | |
226 | } | |
227 | ||
2ad4f86b | 228 | #define VERSATILE_REFCOUNTER (__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_24MHz_OFFSET) |
1da177e4 LT |
229 | |
230 | /* | |
231 | * This is the Versatile sched_clock implementation. This has | |
752bee17 NP |
232 | * a resolution of 41.7ns, and a maximum value of about 35583 days. |
233 | * | |
234 | * The return value is guaranteed to be monotonic in that range as | |
235 | * long as there is always less than 89 seconds between successive | |
236 | * calls to this function. | |
1da177e4 LT |
237 | */ |
238 | unsigned long long sched_clock(void) | |
239 | { | |
752bee17 | 240 | unsigned long long v = cnt32_to_63(readl(VERSATILE_REFCOUNTER)); |
1da177e4 | 241 | |
752bee17 NP |
242 | /* the <<1 gets rid of the cnt_32_to_63 top bit saving on a bic insn */ |
243 | v *= 125<<1; | |
244 | do_div(v, 3<<1); | |
1da177e4 LT |
245 | |
246 | return v; | |
247 | } | |
248 | ||
249 | ||
2ad4f86b | 250 | #define VERSATILE_FLASHCTRL (__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_FLASH_OFFSET) |
1da177e4 LT |
251 | |
252 | static int versatile_flash_init(void) | |
253 | { | |
254 | u32 val; | |
255 | ||
256 | val = __raw_readl(VERSATILE_FLASHCTRL); | |
257 | val &= ~VERSATILE_FLASHPROG_FLVPPEN; | |
258 | __raw_writel(val, VERSATILE_FLASHCTRL); | |
259 | ||
260 | return 0; | |
261 | } | |
262 | ||
263 | static void versatile_flash_exit(void) | |
264 | { | |
265 | u32 val; | |
266 | ||
267 | val = __raw_readl(VERSATILE_FLASHCTRL); | |
268 | val &= ~VERSATILE_FLASHPROG_FLVPPEN; | |
269 | __raw_writel(val, VERSATILE_FLASHCTRL); | |
270 | } | |
271 | ||
272 | static void versatile_flash_set_vpp(int on) | |
273 | { | |
274 | u32 val; | |
275 | ||
276 | val = __raw_readl(VERSATILE_FLASHCTRL); | |
277 | if (on) | |
278 | val |= VERSATILE_FLASHPROG_FLVPPEN; | |
279 | else | |
280 | val &= ~VERSATILE_FLASHPROG_FLVPPEN; | |
281 | __raw_writel(val, VERSATILE_FLASHCTRL); | |
282 | } | |
283 | ||
284 | static struct flash_platform_data versatile_flash_data = { | |
285 | .map_name = "cfi_probe", | |
286 | .width = 4, | |
287 | .init = versatile_flash_init, | |
288 | .exit = versatile_flash_exit, | |
289 | .set_vpp = versatile_flash_set_vpp, | |
290 | }; | |
291 | ||
292 | static struct resource versatile_flash_resource = { | |
293 | .start = VERSATILE_FLASH_BASE, | |
a0c5a645 | 294 | .end = VERSATILE_FLASH_BASE + VERSATILE_FLASH_SIZE - 1, |
1da177e4 LT |
295 | .flags = IORESOURCE_MEM, |
296 | }; | |
297 | ||
298 | static struct platform_device versatile_flash_device = { | |
299 | .name = "armflash", | |
300 | .id = 0, | |
301 | .dev = { | |
302 | .platform_data = &versatile_flash_data, | |
303 | }, | |
304 | .num_resources = 1, | |
305 | .resource = &versatile_flash_resource, | |
306 | }; | |
307 | ||
308 | static struct resource smc91x_resources[] = { | |
309 | [0] = { | |
310 | .start = VERSATILE_ETH_BASE, | |
311 | .end = VERSATILE_ETH_BASE + SZ_64K - 1, | |
312 | .flags = IORESOURCE_MEM, | |
313 | }, | |
314 | [1] = { | |
315 | .start = IRQ_ETH, | |
316 | .end = IRQ_ETH, | |
317 | .flags = IORESOURCE_IRQ, | |
318 | }, | |
319 | }; | |
320 | ||
321 | static struct platform_device smc91x_device = { | |
322 | .name = "smc91x", | |
323 | .id = 0, | |
324 | .num_resources = ARRAY_SIZE(smc91x_resources), | |
325 | .resource = smc91x_resources, | |
326 | }; | |
327 | ||
2ad4f86b | 328 | #define VERSATILE_SYSMCI (__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_MCI_OFFSET) |
1da177e4 LT |
329 | |
330 | unsigned int mmc_status(struct device *dev) | |
331 | { | |
332 | struct amba_device *adev = container_of(dev, struct amba_device, dev); | |
333 | u32 mask; | |
334 | ||
335 | if (adev->res.start == VERSATILE_MMCI0_BASE) | |
336 | mask = 1; | |
337 | else | |
338 | mask = 2; | |
339 | ||
340 | return readl(VERSATILE_SYSMCI) & mask; | |
341 | } | |
342 | ||
343 | static struct mmc_platform_data mmc0_plat_data = { | |
344 | .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34, | |
345 | .status = mmc_status, | |
346 | }; | |
347 | ||
348 | /* | |
349 | * Clock handling | |
350 | */ | |
351 | static const struct icst307_params versatile_oscvco_params = { | |
352 | .ref = 24000, | |
353 | .vco_max = 200000, | |
354 | .vd_min = 4 + 8, | |
355 | .vd_max = 511 + 8, | |
356 | .rd_min = 1 + 2, | |
357 | .rd_max = 127 + 2, | |
358 | }; | |
359 | ||
360 | static void versatile_oscvco_set(struct clk *clk, struct icst307_vco vco) | |
361 | { | |
2ad4f86b | 362 | void __iomem *sys_lock = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_LOCK_OFFSET; |
dc5bc8f1 | 363 | void __iomem *sys_osc = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_OSCCLCD_OFFSET; |
1da177e4 LT |
364 | u32 val; |
365 | ||
366 | val = readl(sys_osc) & ~0x7ffff; | |
367 | val |= vco.v | (vco.r << 9) | (vco.s << 16); | |
368 | ||
369 | writel(0xa05f, sys_lock); | |
370 | writel(val, sys_osc); | |
371 | writel(0, sys_lock); | |
372 | } | |
373 | ||
374 | static struct clk versatile_clcd_clk = { | |
375 | .name = "CLCDCLK", | |
376 | .params = &versatile_oscvco_params, | |
377 | .setvco = versatile_oscvco_set, | |
378 | }; | |
379 | ||
380 | /* | |
381 | * CLCD support. | |
382 | */ | |
383 | #define SYS_CLCD_MODE_MASK (3 << 0) | |
384 | #define SYS_CLCD_MODE_888 (0 << 0) | |
385 | #define SYS_CLCD_MODE_5551 (1 << 0) | |
386 | #define SYS_CLCD_MODE_565_RLSB (2 << 0) | |
387 | #define SYS_CLCD_MODE_565_BLSB (3 << 0) | |
388 | #define SYS_CLCD_NLCDIOON (1 << 2) | |
389 | #define SYS_CLCD_VDDPOSSWITCH (1 << 3) | |
390 | #define SYS_CLCD_PWR3V5SWITCH (1 << 4) | |
391 | #define SYS_CLCD_ID_MASK (0x1f << 8) | |
392 | #define SYS_CLCD_ID_SANYO_3_8 (0x00 << 8) | |
393 | #define SYS_CLCD_ID_UNKNOWN_8_4 (0x01 << 8) | |
394 | #define SYS_CLCD_ID_EPSON_2_2 (0x02 << 8) | |
395 | #define SYS_CLCD_ID_SANYO_2_5 (0x07 << 8) | |
396 | #define SYS_CLCD_ID_VGA (0x1f << 8) | |
397 | ||
398 | static struct clcd_panel vga = { | |
399 | .mode = { | |
400 | .name = "VGA", | |
401 | .refresh = 60, | |
402 | .xres = 640, | |
403 | .yres = 480, | |
404 | .pixclock = 39721, | |
405 | .left_margin = 40, | |
406 | .right_margin = 24, | |
407 | .upper_margin = 32, | |
408 | .lower_margin = 11, | |
409 | .hsync_len = 96, | |
410 | .vsync_len = 2, | |
411 | .sync = 0, | |
412 | .vmode = FB_VMODE_NONINTERLACED, | |
413 | }, | |
414 | .width = -1, | |
415 | .height = -1, | |
416 | .tim2 = TIM2_BCD | TIM2_IPC, | |
417 | .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1), | |
418 | .bpp = 16, | |
419 | }; | |
420 | ||
421 | static struct clcd_panel sanyo_3_8_in = { | |
422 | .mode = { | |
423 | .name = "Sanyo QVGA", | |
424 | .refresh = 116, | |
425 | .xres = 320, | |
426 | .yres = 240, | |
427 | .pixclock = 100000, | |
428 | .left_margin = 6, | |
429 | .right_margin = 6, | |
430 | .upper_margin = 5, | |
431 | .lower_margin = 5, | |
432 | .hsync_len = 6, | |
433 | .vsync_len = 6, | |
434 | .sync = 0, | |
435 | .vmode = FB_VMODE_NONINTERLACED, | |
436 | }, | |
437 | .width = -1, | |
438 | .height = -1, | |
439 | .tim2 = TIM2_BCD, | |
440 | .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1), | |
441 | .bpp = 16, | |
442 | }; | |
443 | ||
444 | static struct clcd_panel sanyo_2_5_in = { | |
445 | .mode = { | |
446 | .name = "Sanyo QVGA Portrait", | |
447 | .refresh = 116, | |
448 | .xres = 240, | |
449 | .yres = 320, | |
450 | .pixclock = 100000, | |
451 | .left_margin = 20, | |
452 | .right_margin = 10, | |
453 | .upper_margin = 2, | |
454 | .lower_margin = 2, | |
455 | .hsync_len = 10, | |
456 | .vsync_len = 2, | |
457 | .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
458 | .vmode = FB_VMODE_NONINTERLACED, | |
459 | }, | |
460 | .width = -1, | |
461 | .height = -1, | |
462 | .tim2 = TIM2_IVS | TIM2_IHS | TIM2_IPC, | |
463 | .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1), | |
464 | .bpp = 16, | |
465 | }; | |
466 | ||
467 | static struct clcd_panel epson_2_2_in = { | |
468 | .mode = { | |
469 | .name = "Epson QCIF", | |
470 | .refresh = 390, | |
471 | .xres = 176, | |
472 | .yres = 220, | |
473 | .pixclock = 62500, | |
474 | .left_margin = 3, | |
475 | .right_margin = 2, | |
476 | .upper_margin = 1, | |
477 | .lower_margin = 0, | |
478 | .hsync_len = 3, | |
479 | .vsync_len = 2, | |
480 | .sync = 0, | |
481 | .vmode = FB_VMODE_NONINTERLACED, | |
482 | }, | |
483 | .width = -1, | |
484 | .height = -1, | |
485 | .tim2 = TIM2_BCD | TIM2_IPC, | |
486 | .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1), | |
487 | .bpp = 16, | |
488 | }; | |
489 | ||
490 | /* | |
491 | * Detect which LCD panel is connected, and return the appropriate | |
492 | * clcd_panel structure. Note: we do not have any information on | |
493 | * the required timings for the 8.4in panel, so we presently assume | |
494 | * VGA timings. | |
495 | */ | |
496 | static struct clcd_panel *versatile_clcd_panel(void) | |
497 | { | |
2ad4f86b | 498 | void __iomem *sys_clcd = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_CLCD_OFFSET; |
1da177e4 LT |
499 | struct clcd_panel *panel = &vga; |
500 | u32 val; | |
501 | ||
502 | val = readl(sys_clcd) & SYS_CLCD_ID_MASK; | |
503 | if (val == SYS_CLCD_ID_SANYO_3_8) | |
504 | panel = &sanyo_3_8_in; | |
505 | else if (val == SYS_CLCD_ID_SANYO_2_5) | |
506 | panel = &sanyo_2_5_in; | |
507 | else if (val == SYS_CLCD_ID_EPSON_2_2) | |
508 | panel = &epson_2_2_in; | |
509 | else if (val == SYS_CLCD_ID_VGA) | |
510 | panel = &vga; | |
511 | else { | |
512 | printk(KERN_ERR "CLCD: unknown LCD panel ID 0x%08x, using VGA\n", | |
513 | val); | |
514 | panel = &vga; | |
515 | } | |
516 | ||
517 | return panel; | |
518 | } | |
519 | ||
520 | /* | |
521 | * Disable all display connectors on the interface module. | |
522 | */ | |
523 | static void versatile_clcd_disable(struct clcd_fb *fb) | |
524 | { | |
2ad4f86b | 525 | void __iomem *sys_clcd = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_CLCD_OFFSET; |
1da177e4 LT |
526 | u32 val; |
527 | ||
528 | val = readl(sys_clcd); | |
529 | val &= ~SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH; | |
530 | writel(val, sys_clcd); | |
531 | ||
532 | #ifdef CONFIG_MACH_VERSATILE_AB | |
533 | /* | |
534 | * If the LCD is Sanyo 2x5 in on the IB2 board, turn the back-light off | |
535 | */ | |
dc5bc8f1 | 536 | if (machine_is_versatile_ab() && fb->panel == &sanyo_2_5_in) { |
2ad4f86b | 537 | void __iomem *versatile_ib2_ctrl = __io_address(VERSATILE_IB2_CTRL); |
1da177e4 LT |
538 | unsigned long ctrl; |
539 | ||
540 | ctrl = readl(versatile_ib2_ctrl); | |
541 | ctrl &= ~0x01; | |
542 | writel(ctrl, versatile_ib2_ctrl); | |
543 | } | |
544 | #endif | |
545 | } | |
546 | ||
547 | /* | |
548 | * Enable the relevant connector on the interface module. | |
549 | */ | |
550 | static void versatile_clcd_enable(struct clcd_fb *fb) | |
551 | { | |
2ad4f86b | 552 | void __iomem *sys_clcd = __io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_CLCD_OFFSET; |
1da177e4 LT |
553 | u32 val; |
554 | ||
555 | val = readl(sys_clcd); | |
556 | val &= ~SYS_CLCD_MODE_MASK; | |
557 | ||
558 | switch (fb->fb.var.green.length) { | |
559 | case 5: | |
560 | val |= SYS_CLCD_MODE_5551; | |
561 | break; | |
562 | case 6: | |
90ef713b | 563 | val |= SYS_CLCD_MODE_565_RLSB; |
1da177e4 LT |
564 | break; |
565 | case 8: | |
566 | val |= SYS_CLCD_MODE_888; | |
567 | break; | |
568 | } | |
569 | ||
570 | /* | |
571 | * Set the MUX | |
572 | */ | |
573 | writel(val, sys_clcd); | |
574 | ||
575 | /* | |
576 | * And now enable the PSUs | |
577 | */ | |
578 | val |= SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH; | |
579 | writel(val, sys_clcd); | |
580 | ||
581 | #ifdef CONFIG_MACH_VERSATILE_AB | |
582 | /* | |
583 | * If the LCD is Sanyo 2x5 in on the IB2 board, turn the back-light on | |
584 | */ | |
dc5bc8f1 | 585 | if (machine_is_versatile_ab() && fb->panel == &sanyo_2_5_in) { |
2ad4f86b | 586 | void __iomem *versatile_ib2_ctrl = __io_address(VERSATILE_IB2_CTRL); |
1da177e4 LT |
587 | unsigned long ctrl; |
588 | ||
589 | ctrl = readl(versatile_ib2_ctrl); | |
590 | ctrl |= 0x01; | |
591 | writel(ctrl, versatile_ib2_ctrl); | |
592 | } | |
593 | #endif | |
594 | } | |
595 | ||
596 | static unsigned long framesize = SZ_1M; | |
597 | ||
598 | static int versatile_clcd_setup(struct clcd_fb *fb) | |
599 | { | |
600 | dma_addr_t dma; | |
601 | ||
602 | fb->panel = versatile_clcd_panel(); | |
603 | ||
604 | fb->fb.screen_base = dma_alloc_writecombine(&fb->dev->dev, framesize, | |
605 | &dma, GFP_KERNEL); | |
606 | if (!fb->fb.screen_base) { | |
607 | printk(KERN_ERR "CLCD: unable to map framebuffer\n"); | |
608 | return -ENOMEM; | |
609 | } | |
610 | ||
611 | fb->fb.fix.smem_start = dma; | |
612 | fb->fb.fix.smem_len = framesize; | |
613 | ||
614 | return 0; | |
615 | } | |
616 | ||
617 | static int versatile_clcd_mmap(struct clcd_fb *fb, struct vm_area_struct *vma) | |
618 | { | |
619 | return dma_mmap_writecombine(&fb->dev->dev, vma, | |
620 | fb->fb.screen_base, | |
621 | fb->fb.fix.smem_start, | |
622 | fb->fb.fix.smem_len); | |
623 | } | |
624 | ||
625 | static void versatile_clcd_remove(struct clcd_fb *fb) | |
626 | { | |
627 | dma_free_writecombine(&fb->dev->dev, fb->fb.fix.smem_len, | |
628 | fb->fb.screen_base, fb->fb.fix.smem_start); | |
629 | } | |
630 | ||
631 | static struct clcd_board clcd_plat_data = { | |
632 | .name = "Versatile", | |
633 | .check = clcdfb_check, | |
634 | .decode = clcdfb_decode, | |
635 | .disable = versatile_clcd_disable, | |
636 | .enable = versatile_clcd_enable, | |
637 | .setup = versatile_clcd_setup, | |
638 | .mmap = versatile_clcd_mmap, | |
639 | .remove = versatile_clcd_remove, | |
640 | }; | |
641 | ||
642 | #define AACI_IRQ { IRQ_AACI, NO_IRQ } | |
643 | #define AACI_DMA { 0x80, 0x81 } | |
644 | #define MMCI0_IRQ { IRQ_MMCI0A,IRQ_SIC_MMCI0B } | |
645 | #define MMCI0_DMA { 0x84, 0 } | |
646 | #define KMI0_IRQ { IRQ_SIC_KMI0, NO_IRQ } | |
647 | #define KMI0_DMA { 0, 0 } | |
648 | #define KMI1_IRQ { IRQ_SIC_KMI1, NO_IRQ } | |
649 | #define KMI1_DMA { 0, 0 } | |
650 | ||
651 | /* | |
652 | * These devices are connected directly to the multi-layer AHB switch | |
653 | */ | |
654 | #define SMC_IRQ { NO_IRQ, NO_IRQ } | |
655 | #define SMC_DMA { 0, 0 } | |
656 | #define MPMC_IRQ { NO_IRQ, NO_IRQ } | |
657 | #define MPMC_DMA { 0, 0 } | |
658 | #define CLCD_IRQ { IRQ_CLCDINT, NO_IRQ } | |
659 | #define CLCD_DMA { 0, 0 } | |
660 | #define DMAC_IRQ { IRQ_DMAINT, NO_IRQ } | |
661 | #define DMAC_DMA { 0, 0 } | |
662 | ||
663 | /* | |
664 | * These devices are connected via the core APB bridge | |
665 | */ | |
666 | #define SCTL_IRQ { NO_IRQ, NO_IRQ } | |
667 | #define SCTL_DMA { 0, 0 } | |
668 | #define WATCHDOG_IRQ { IRQ_WDOGINT, NO_IRQ } | |
669 | #define WATCHDOG_DMA { 0, 0 } | |
670 | #define GPIO0_IRQ { IRQ_GPIOINT0, NO_IRQ } | |
671 | #define GPIO0_DMA { 0, 0 } | |
672 | #define GPIO1_IRQ { IRQ_GPIOINT1, NO_IRQ } | |
673 | #define GPIO1_DMA { 0, 0 } | |
674 | #define RTC_IRQ { IRQ_RTCINT, NO_IRQ } | |
675 | #define RTC_DMA { 0, 0 } | |
676 | ||
677 | /* | |
678 | * These devices are connected via the DMA APB bridge | |
679 | */ | |
680 | #define SCI_IRQ { IRQ_SCIINT, NO_IRQ } | |
681 | #define SCI_DMA { 7, 6 } | |
682 | #define UART0_IRQ { IRQ_UARTINT0, NO_IRQ } | |
683 | #define UART0_DMA { 15, 14 } | |
684 | #define UART1_IRQ { IRQ_UARTINT1, NO_IRQ } | |
685 | #define UART1_DMA { 13, 12 } | |
686 | #define UART2_IRQ { IRQ_UARTINT2, NO_IRQ } | |
687 | #define UART2_DMA { 11, 10 } | |
688 | #define SSP_IRQ { IRQ_SSPINT, NO_IRQ } | |
689 | #define SSP_DMA { 9, 8 } | |
690 | ||
691 | /* FPGA Primecells */ | |
692 | AMBA_DEVICE(aaci, "fpga:04", AACI, NULL); | |
693 | AMBA_DEVICE(mmc0, "fpga:05", MMCI0, &mmc0_plat_data); | |
694 | AMBA_DEVICE(kmi0, "fpga:06", KMI0, NULL); | |
695 | AMBA_DEVICE(kmi1, "fpga:07", KMI1, NULL); | |
696 | ||
697 | /* DevChip Primecells */ | |
698 | AMBA_DEVICE(smc, "dev:00", SMC, NULL); | |
699 | AMBA_DEVICE(mpmc, "dev:10", MPMC, NULL); | |
700 | AMBA_DEVICE(clcd, "dev:20", CLCD, &clcd_plat_data); | |
701 | AMBA_DEVICE(dmac, "dev:30", DMAC, NULL); | |
702 | AMBA_DEVICE(sctl, "dev:e0", SCTL, NULL); | |
703 | AMBA_DEVICE(wdog, "dev:e1", WATCHDOG, NULL); | |
704 | AMBA_DEVICE(gpio0, "dev:e4", GPIO0, NULL); | |
705 | AMBA_DEVICE(gpio1, "dev:e5", GPIO1, NULL); | |
706 | AMBA_DEVICE(rtc, "dev:e8", RTC, NULL); | |
707 | AMBA_DEVICE(sci0, "dev:f0", SCI, NULL); | |
708 | AMBA_DEVICE(uart0, "dev:f1", UART0, NULL); | |
709 | AMBA_DEVICE(uart1, "dev:f2", UART1, NULL); | |
710 | AMBA_DEVICE(uart2, "dev:f3", UART2, NULL); | |
711 | AMBA_DEVICE(ssp0, "dev:f4", SSP, NULL); | |
712 | ||
713 | static struct amba_device *amba_devs[] __initdata = { | |
714 | &dmac_device, | |
715 | &uart0_device, | |
716 | &uart1_device, | |
717 | &uart2_device, | |
718 | &smc_device, | |
719 | &mpmc_device, | |
720 | &clcd_device, | |
721 | &sctl_device, | |
722 | &wdog_device, | |
723 | &gpio0_device, | |
724 | &gpio1_device, | |
725 | &rtc_device, | |
726 | &sci0_device, | |
727 | &ssp0_device, | |
728 | &aaci_device, | |
729 | &mmc0_device, | |
730 | &kmi0_device, | |
731 | &kmi1_device, | |
732 | }; | |
733 | ||
734 | #ifdef CONFIG_LEDS | |
2ad4f86b | 735 | #define VA_LEDS_BASE (__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_LED_OFFSET) |
1da177e4 LT |
736 | |
737 | static void versatile_leds_event(led_event_t ledevt) | |
738 | { | |
739 | unsigned long flags; | |
740 | u32 val; | |
741 | ||
742 | local_irq_save(flags); | |
743 | val = readl(VA_LEDS_BASE); | |
744 | ||
745 | switch (ledevt) { | |
746 | case led_idle_start: | |
747 | val = val & ~VERSATILE_SYS_LED0; | |
748 | break; | |
749 | ||
750 | case led_idle_end: | |
751 | val = val | VERSATILE_SYS_LED0; | |
752 | break; | |
753 | ||
754 | case led_timer: | |
755 | val = val ^ VERSATILE_SYS_LED1; | |
756 | break; | |
757 | ||
758 | case led_halted: | |
759 | val = 0; | |
760 | break; | |
761 | ||
762 | default: | |
763 | break; | |
764 | } | |
765 | ||
766 | writel(val, VA_LEDS_BASE); | |
767 | local_irq_restore(flags); | |
768 | } | |
769 | #endif /* CONFIG_LEDS */ | |
770 | ||
771 | void __init versatile_init(void) | |
772 | { | |
773 | int i; | |
774 | ||
775 | clk_register(&versatile_clcd_clk); | |
776 | ||
777 | platform_device_register(&versatile_flash_device); | |
778 | platform_device_register(&smc91x_device); | |
779 | ||
780 | for (i = 0; i < ARRAY_SIZE(amba_devs); i++) { | |
781 | struct amba_device *d = amba_devs[i]; | |
782 | amba_device_register(d, &iomem_resource); | |
783 | } | |
784 | ||
785 | #ifdef CONFIG_LEDS | |
786 | leds_event = versatile_leds_event; | |
787 | #endif | |
788 | } | |
789 | ||
790 | /* | |
791 | * Where is the timer (VA)? | |
792 | */ | |
2ad4f86b AV |
793 | #define TIMER0_VA_BASE __io_address(VERSATILE_TIMER0_1_BASE) |
794 | #define TIMER1_VA_BASE (__io_address(VERSATILE_TIMER0_1_BASE) + 0x20) | |
795 | #define TIMER2_VA_BASE __io_address(VERSATILE_TIMER2_3_BASE) | |
796 | #define TIMER3_VA_BASE (__io_address(VERSATILE_TIMER2_3_BASE) + 0x20) | |
797 | #define VA_IC_BASE __io_address(VERSATILE_VIC_BASE) | |
1da177e4 LT |
798 | |
799 | /* | |
800 | * How long is the timer interval? | |
801 | */ | |
802 | #define TIMER_INTERVAL (TICKS_PER_uSEC * mSEC_10) | |
803 | #if TIMER_INTERVAL >= 0x100000 | |
b720f732 RK |
804 | #define TIMER_RELOAD (TIMER_INTERVAL >> 8) |
805 | #define TIMER_DIVISOR (TIMER_CTRL_DIV256) | |
1da177e4 LT |
806 | #define TICKS2USECS(x) (256 * (x) / TICKS_PER_uSEC) |
807 | #elif TIMER_INTERVAL >= 0x10000 | |
808 | #define TIMER_RELOAD (TIMER_INTERVAL >> 4) /* Divide by 16 */ | |
b720f732 | 809 | #define TIMER_DIVISOR (TIMER_CTRL_DIV16) |
1da177e4 LT |
810 | #define TICKS2USECS(x) (16 * (x) / TICKS_PER_uSEC) |
811 | #else | |
812 | #define TIMER_RELOAD (TIMER_INTERVAL) | |
b720f732 | 813 | #define TIMER_DIVISOR (TIMER_CTRL_DIV1) |
1da177e4 LT |
814 | #define TICKS2USECS(x) ((x) / TICKS_PER_uSEC) |
815 | #endif | |
816 | ||
1da177e4 LT |
817 | /* |
818 | * Returns number of ms since last clock interrupt. Note that interrupts | |
819 | * will have been disabled by do_gettimeoffset() | |
820 | */ | |
821 | static unsigned long versatile_gettimeoffset(void) | |
822 | { | |
1da177e4 LT |
823 | unsigned long ticks1, ticks2, status; |
824 | ||
825 | /* | |
826 | * Get the current number of ticks. Note that there is a race | |
827 | * condition between us reading the timer and checking for | |
828 | * an interrupt. We get around this by ensuring that the | |
829 | * counter has not reloaded between our two reads. | |
830 | */ | |
b720f732 | 831 | ticks2 = readl(TIMER0_VA_BASE + TIMER_VALUE) & 0xffff; |
1da177e4 LT |
832 | do { |
833 | ticks1 = ticks2; | |
fa0fe48f | 834 | status = __raw_readl(VA_IC_BASE + VIC_RAW_STATUS); |
b720f732 | 835 | ticks2 = readl(TIMER0_VA_BASE + TIMER_VALUE) & 0xffff; |
1da177e4 LT |
836 | } while (ticks2 > ticks1); |
837 | ||
838 | /* | |
839 | * Number of ticks since last interrupt. | |
840 | */ | |
841 | ticks1 = TIMER_RELOAD - ticks2; | |
842 | ||
843 | /* | |
844 | * Interrupt pending? If so, we've reloaded once already. | |
845 | * | |
846 | * FIXME: Need to check this is effectively timer 0 that expires | |
847 | */ | |
848 | if (status & IRQMASK_TIMERINT0_1) | |
849 | ticks1 += TIMER_RELOAD; | |
850 | ||
851 | /* | |
852 | * Convert the ticks to usecs | |
853 | */ | |
854 | return TICKS2USECS(ticks1); | |
855 | } | |
856 | ||
857 | /* | |
858 | * IRQ handler for the timer | |
859 | */ | |
0cd61b68 | 860 | static irqreturn_t versatile_timer_interrupt(int irq, void *dev_id) |
1da177e4 | 861 | { |
1da177e4 LT |
862 | write_seqlock(&xtime_lock); |
863 | ||
864 | // ...clear the interrupt | |
b720f732 | 865 | writel(1, TIMER0_VA_BASE + TIMER_INTCLR); |
1da177e4 | 866 | |
0cd61b68 | 867 | timer_tick(); |
1da177e4 LT |
868 | |
869 | write_sequnlock(&xtime_lock); | |
870 | ||
871 | return IRQ_HANDLED; | |
872 | } | |
873 | ||
874 | static struct irqaction versatile_timer_irq = { | |
875 | .name = "Versatile Timer Tick", | |
52e405ea | 876 | .flags = IRQF_DISABLED | IRQF_TIMER, |
09b8b5f8 | 877 | .handler = versatile_timer_interrupt, |
1da177e4 LT |
878 | }; |
879 | ||
880 | /* | |
881 | * Set up timer interrupt, and return the current time in seconds. | |
882 | */ | |
883 | static void __init versatile_timer_init(void) | |
884 | { | |
b720f732 | 885 | u32 val; |
1da177e4 LT |
886 | |
887 | /* | |
888 | * set clock frequency: | |
889 | * VERSATILE_REFCLK is 32KHz | |
890 | * VERSATILE_TIMCLK is 1MHz | |
891 | */ | |
2ad4f86b | 892 | val = readl(__io_address(VERSATILE_SCTL_BASE)); |
b720f732 RK |
893 | writel((VERSATILE_TIMCLK << VERSATILE_TIMER1_EnSel) | |
894 | (VERSATILE_TIMCLK << VERSATILE_TIMER2_EnSel) | | |
895 | (VERSATILE_TIMCLK << VERSATILE_TIMER3_EnSel) | | |
896 | (VERSATILE_TIMCLK << VERSATILE_TIMER4_EnSel) | val, | |
2ad4f86b | 897 | __io_address(VERSATILE_SCTL_BASE)); |
1da177e4 LT |
898 | |
899 | /* | |
900 | * Initialise to a known state (all timers off) | |
901 | */ | |
b720f732 RK |
902 | writel(0, TIMER0_VA_BASE + TIMER_CTRL); |
903 | writel(0, TIMER1_VA_BASE + TIMER_CTRL); | |
904 | writel(0, TIMER2_VA_BASE + TIMER_CTRL); | |
905 | writel(0, TIMER3_VA_BASE + TIMER_CTRL); | |
906 | ||
907 | writel(TIMER_RELOAD, TIMER0_VA_BASE + TIMER_LOAD); | |
908 | writel(TIMER_RELOAD, TIMER0_VA_BASE + TIMER_VALUE); | |
909 | writel(TIMER_DIVISOR | TIMER_CTRL_ENABLE | TIMER_CTRL_PERIODIC | | |
910 | TIMER_CTRL_IE, TIMER0_VA_BASE + TIMER_CTRL); | |
1da177e4 LT |
911 | |
912 | /* | |
913 | * Make irqs happen for the system timer | |
914 | */ | |
915 | setup_irq(IRQ_TIMERINT0_1, &versatile_timer_irq); | |
916 | } | |
917 | ||
918 | struct sys_timer versatile_timer = { | |
919 | .init = versatile_timer_init, | |
920 | .offset = versatile_gettimeoffset, | |
921 | }; |