Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * linux/arch/arm/mach-sa1100/generic.c | |
3 | * | |
4 | * Author: Nicolas Pitre | |
5 | * | |
6 | * Code common to all SA11x0 machines. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | */ | |
2f8163ba | 12 | #include <linux/gpio.h> |
1da177e4 LT |
13 | #include <linux/module.h> |
14 | #include <linux/kernel.h> | |
15 | #include <linux/init.h> | |
16 | #include <linux/delay.h> | |
7931d92f | 17 | #include <linux/dma-mapping.h> |
1da177e4 LT |
18 | #include <linux/pm.h> |
19 | #include <linux/cpufreq.h> | |
20 | #include <linux/ioport.h> | |
d052d1be | 21 | #include <linux/platform_device.h> |
7b6d864b | 22 | #include <linux/reboot.h> |
1da177e4 | 23 | |
e1b7a72a RK |
24 | #include <video/sa1100fb.h> |
25 | ||
1da177e4 | 26 | #include <asm/div64.h> |
1da177e4 | 27 | #include <asm/mach/map.h> |
14e66f76 | 28 | #include <asm/mach/flash.h> |
1da177e4 | 29 | #include <asm/irq.h> |
9f97da78 | 30 | #include <asm/system_misc.h> |
1da177e4 | 31 | |
f314f33b RH |
32 | #include <mach/hardware.h> |
33 | #include <mach/irqs.h> | |
34 | ||
1da177e4 LT |
35 | #include "generic.h" |
36 | ||
04fef228 EM |
37 | unsigned int reset_status; |
38 | EXPORT_SYMBOL(reset_status); | |
39 | ||
1da177e4 LT |
40 | #define NR_FREQS 16 |
41 | ||
42 | /* | |
43 | * This table is setup for a 3.6864MHz Crystal. | |
44 | */ | |
22c8b4f1 VK |
45 | struct cpufreq_frequency_table sa11x0_freq_table[NR_FREQS+1] = { |
46 | { .frequency = 59000, /* 59.0 MHz */}, | |
47 | { .frequency = 73700, /* 73.7 MHz */}, | |
48 | { .frequency = 88500, /* 88.5 MHz */}, | |
49 | { .frequency = 103200, /* 103.2 MHz */}, | |
50 | { .frequency = 118000, /* 118.0 MHz */}, | |
51 | { .frequency = 132700, /* 132.7 MHz */}, | |
52 | { .frequency = 147500, /* 147.5 MHz */}, | |
53 | { .frequency = 162200, /* 162.2 MHz */}, | |
54 | { .frequency = 176900, /* 176.9 MHz */}, | |
55 | { .frequency = 191700, /* 191.7 MHz */}, | |
56 | { .frequency = 206400, /* 206.4 MHz */}, | |
57 | { .frequency = 221200, /* 221.2 MHz */}, | |
58 | { .frequency = 235900, /* 235.9 MHz */}, | |
59 | { .frequency = 250700, /* 250.7 MHz */}, | |
60 | { .frequency = 265400, /* 265.4 MHz */}, | |
61 | { .frequency = 280200, /* 280.2 MHz */}, | |
62 | { .frequency = CPUFREQ_TABLE_END, }, | |
1da177e4 LT |
63 | }; |
64 | ||
1da177e4 LT |
65 | unsigned int sa11x0_getspeed(unsigned int cpu) |
66 | { | |
67 | if (cpu) | |
68 | return 0; | |
22c8b4f1 | 69 | return sa11x0_freq_table[PPCR & 0xf].frequency; |
1da177e4 LT |
70 | } |
71 | ||
1da177e4 LT |
72 | /* |
73 | * Default power-off for SA1100 | |
74 | */ | |
75 | static void sa1100_power_off(void) | |
76 | { | |
77 | mdelay(100); | |
78 | local_irq_disable(); | |
79 | /* disable internal oscillator, float CS lines */ | |
80 | PCFR = (PCFR_OPDE | PCFR_FP | PCFR_FS); | |
81 | /* enable wake-up on GPIO0 (Assabet...) */ | |
82 | PWER = GFER = GRER = 1; | |
83 | /* | |
84 | * set scratchpad to zero, just in case it is used as a | |
85 | * restart address by the bootloader. | |
86 | */ | |
87 | PSPR = 0; | |
88 | /* enter sleep mode */ | |
89 | PMCR = PMCR_SF; | |
90 | } | |
91 | ||
7b6d864b | 92 | void sa11x0_restart(enum reboot_mode mode, const char *cmd) |
d9ca5839 | 93 | { |
7b6d864b | 94 | if (mode == REBOOT_SOFT) { |
d9ca5839 RK |
95 | /* Jump into ROM at address 0 */ |
96 | soft_restart(0); | |
97 | } else { | |
98 | /* Use on-chip reset capability */ | |
99 | RSRR = RSRR_SWR; | |
100 | } | |
101 | } | |
102 | ||
7a5b4e16 RK |
103 | static void sa11x0_register_device(struct platform_device *dev, void *data) |
104 | { | |
105 | int err; | |
106 | dev->dev.platform_data = data; | |
107 | err = platform_device_register(dev); | |
108 | if (err) | |
109 | printk(KERN_ERR "Unable to register device %s: %d\n", | |
110 | dev->name, err); | |
111 | } | |
112 | ||
113 | ||
1da177e4 | 114 | static struct resource sa11x0udc_resources[] = { |
a181099e RK |
115 | [0] = DEFINE_RES_MEM(__PREG(Ser0UDCCR), SZ_64K), |
116 | [1] = DEFINE_RES_IRQ(IRQ_Ser0UDC), | |
1da177e4 LT |
117 | }; |
118 | ||
119 | static u64 sa11x0udc_dma_mask = 0xffffffffUL; | |
120 | ||
121 | static struct platform_device sa11x0udc_device = { | |
122 | .name = "sa11x0-udc", | |
123 | .id = -1, | |
124 | .dev = { | |
125 | .dma_mask = &sa11x0udc_dma_mask, | |
126 | .coherent_dma_mask = 0xffffffff, | |
127 | }, | |
128 | .num_resources = ARRAY_SIZE(sa11x0udc_resources), | |
129 | .resource = sa11x0udc_resources, | |
130 | }; | |
131 | ||
132 | static struct resource sa11x0uart1_resources[] = { | |
a181099e RK |
133 | [0] = DEFINE_RES_MEM(__PREG(Ser1UTCR0), SZ_64K), |
134 | [1] = DEFINE_RES_IRQ(IRQ_Ser1UART), | |
1da177e4 LT |
135 | }; |
136 | ||
137 | static struct platform_device sa11x0uart1_device = { | |
138 | .name = "sa11x0-uart", | |
139 | .id = 1, | |
140 | .num_resources = ARRAY_SIZE(sa11x0uart1_resources), | |
141 | .resource = sa11x0uart1_resources, | |
142 | }; | |
143 | ||
144 | static struct resource sa11x0uart3_resources[] = { | |
a181099e RK |
145 | [0] = DEFINE_RES_MEM(__PREG(Ser3UTCR0), SZ_64K), |
146 | [1] = DEFINE_RES_IRQ(IRQ_Ser3UART), | |
1da177e4 LT |
147 | }; |
148 | ||
149 | static struct platform_device sa11x0uart3_device = { | |
150 | .name = "sa11x0-uart", | |
151 | .id = 3, | |
152 | .num_resources = ARRAY_SIZE(sa11x0uart3_resources), | |
153 | .resource = sa11x0uart3_resources, | |
154 | }; | |
155 | ||
156 | static struct resource sa11x0mcp_resources[] = { | |
a181099e | 157 | [0] = DEFINE_RES_MEM(__PREG(Ser4MCCR0), SZ_64K), |
7256ecc2 RK |
158 | [1] = DEFINE_RES_MEM(__PREG(Ser4MCCR1), 4), |
159 | [2] = DEFINE_RES_IRQ(IRQ_Ser4MCP), | |
1da177e4 LT |
160 | }; |
161 | ||
162 | static u64 sa11x0mcp_dma_mask = 0xffffffffUL; | |
163 | ||
164 | static struct platform_device sa11x0mcp_device = { | |
165 | .name = "sa11x0-mcp", | |
166 | .id = -1, | |
167 | .dev = { | |
168 | .dma_mask = &sa11x0mcp_dma_mask, | |
169 | .coherent_dma_mask = 0xffffffff, | |
170 | }, | |
171 | .num_resources = ARRAY_SIZE(sa11x0mcp_resources), | |
172 | .resource = sa11x0mcp_resources, | |
173 | }; | |
174 | ||
e36e26a8 RK |
175 | void __init sa11x0_ppc_configure_mcp(void) |
176 | { | |
177 | /* Setup the PPC unit for the MCP */ | |
178 | PPDR &= ~PPC_RXD4; | |
179 | PPDR |= PPC_TXD4 | PPC_SCLK | PPC_SFRM; | |
180 | PSDR |= PPC_RXD4; | |
181 | PSDR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM); | |
182 | PPSR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM); | |
183 | } | |
184 | ||
7a5b4e16 | 185 | void sa11x0_register_mcp(struct mcp_plat_data *data) |
323cdfc1 | 186 | { |
7a5b4e16 | 187 | sa11x0_register_device(&sa11x0mcp_device, data); |
323cdfc1 RK |
188 | } |
189 | ||
1da177e4 | 190 | static struct resource sa11x0ssp_resources[] = { |
a181099e RK |
191 | [0] = DEFINE_RES_MEM(0x80070000, SZ_64K), |
192 | [1] = DEFINE_RES_IRQ(IRQ_Ser4SSP), | |
1da177e4 LT |
193 | }; |
194 | ||
195 | static u64 sa11x0ssp_dma_mask = 0xffffffffUL; | |
196 | ||
197 | static struct platform_device sa11x0ssp_device = { | |
198 | .name = "sa11x0-ssp", | |
199 | .id = -1, | |
200 | .dev = { | |
201 | .dma_mask = &sa11x0ssp_dma_mask, | |
202 | .coherent_dma_mask = 0xffffffff, | |
203 | }, | |
204 | .num_resources = ARRAY_SIZE(sa11x0ssp_resources), | |
205 | .resource = sa11x0ssp_resources, | |
206 | }; | |
207 | ||
208 | static struct resource sa11x0fb_resources[] = { | |
a181099e RK |
209 | [0] = DEFINE_RES_MEM(0xb0100000, SZ_64K), |
210 | [1] = DEFINE_RES_IRQ(IRQ_LCD), | |
1da177e4 LT |
211 | }; |
212 | ||
213 | static struct platform_device sa11x0fb_device = { | |
214 | .name = "sa11x0-fb", | |
215 | .id = -1, | |
216 | .dev = { | |
217 | .coherent_dma_mask = 0xffffffff, | |
218 | }, | |
219 | .num_resources = ARRAY_SIZE(sa11x0fb_resources), | |
220 | .resource = sa11x0fb_resources, | |
221 | }; | |
222 | ||
e1b7a72a RK |
223 | void sa11x0_register_lcd(struct sa1100fb_mach_info *inf) |
224 | { | |
225 | sa11x0_register_device(&sa11x0fb_device, inf); | |
226 | } | |
227 | ||
1da177e4 LT |
228 | static struct platform_device sa11x0pcmcia_device = { |
229 | .name = "sa11x0-pcmcia", | |
230 | .id = -1, | |
231 | }; | |
232 | ||
233 | static struct platform_device sa11x0mtd_device = { | |
bcc8f3e0 | 234 | .name = "sa1100-mtd", |
1da177e4 LT |
235 | .id = -1, |
236 | }; | |
237 | ||
7a5b4e16 RK |
238 | void sa11x0_register_mtd(struct flash_platform_data *flash, |
239 | struct resource *res, int nr) | |
1da177e4 | 240 | { |
14e66f76 | 241 | flash->name = "sa1100"; |
1da177e4 LT |
242 | sa11x0mtd_device.resource = res; |
243 | sa11x0mtd_device.num_resources = nr; | |
7a5b4e16 | 244 | sa11x0_register_device(&sa11x0mtd_device, flash); |
1da177e4 LT |
245 | } |
246 | ||
247 | static struct resource sa11x0ir_resources[] = { | |
a181099e RK |
248 | DEFINE_RES_MEM(__PREG(Ser2UTCR0), 0x24), |
249 | DEFINE_RES_MEM(__PREG(Ser2HSCR0), 0x1c), | |
250 | DEFINE_RES_MEM(__PREG(Ser2HSCR2), 0x04), | |
251 | DEFINE_RES_IRQ(IRQ_Ser2ICP), | |
1da177e4 LT |
252 | }; |
253 | ||
254 | static struct platform_device sa11x0ir_device = { | |
255 | .name = "sa11x0-ir", | |
256 | .id = -1, | |
257 | .num_resources = ARRAY_SIZE(sa11x0ir_resources), | |
258 | .resource = sa11x0ir_resources, | |
259 | }; | |
260 | ||
7a5b4e16 | 261 | void sa11x0_register_irda(struct irda_platform_data *irda) |
1da177e4 | 262 | { |
7a5b4e16 | 263 | sa11x0_register_device(&sa11x0ir_device, irda); |
1da177e4 LT |
264 | } |
265 | ||
3888c090 | 266 | static struct resource sa1100_rtc_resources[] = { |
9f9d27e3 | 267 | DEFINE_RES_MEM(0x90010000, 0x40), |
3888c090 HZ |
268 | DEFINE_RES_IRQ_NAMED(IRQ_RTC1Hz, "rtc 1Hz"), |
269 | DEFINE_RES_IRQ_NAMED(IRQ_RTCAlrm, "rtc alarm"), | |
270 | }; | |
271 | ||
e842f1c8 RP |
272 | static struct platform_device sa11x0rtc_device = { |
273 | .name = "sa1100-rtc", | |
274 | .id = -1, | |
3888c090 HZ |
275 | .num_resources = ARRAY_SIZE(sa1100_rtc_resources), |
276 | .resource = sa1100_rtc_resources, | |
e842f1c8 RP |
277 | }; |
278 | ||
7931d92f | 279 | static struct resource sa11x0dma_resources[] = { |
c2132010 | 280 | DEFINE_RES_MEM(DMA_PHYS, DMA_SIZE), |
7931d92f RK |
281 | DEFINE_RES_IRQ(IRQ_DMA0), |
282 | DEFINE_RES_IRQ(IRQ_DMA1), | |
283 | DEFINE_RES_IRQ(IRQ_DMA2), | |
284 | DEFINE_RES_IRQ(IRQ_DMA3), | |
285 | DEFINE_RES_IRQ(IRQ_DMA4), | |
286 | DEFINE_RES_IRQ(IRQ_DMA5), | |
287 | }; | |
288 | ||
289 | static u64 sa11x0dma_dma_mask = DMA_BIT_MASK(32); | |
290 | ||
291 | static struct platform_device sa11x0dma_device = { | |
292 | .name = "sa11x0-dma", | |
293 | .id = -1, | |
294 | .dev = { | |
295 | .dma_mask = &sa11x0dma_dma_mask, | |
296 | .coherent_dma_mask = 0xffffffff, | |
297 | }, | |
298 | .num_resources = ARRAY_SIZE(sa11x0dma_resources), | |
299 | .resource = sa11x0dma_resources, | |
300 | }; | |
301 | ||
1da177e4 LT |
302 | static struct platform_device *sa11x0_devices[] __initdata = { |
303 | &sa11x0udc_device, | |
304 | &sa11x0uart1_device, | |
305 | &sa11x0uart3_device, | |
1da177e4 LT |
306 | &sa11x0ssp_device, |
307 | &sa11x0pcmcia_device, | |
e842f1c8 | 308 | &sa11x0rtc_device, |
7931d92f | 309 | &sa11x0dma_device, |
1da177e4 LT |
310 | }; |
311 | ||
312 | static int __init sa1100_init(void) | |
313 | { | |
314 | pm_power_off = sa1100_power_off; | |
1da177e4 LT |
315 | return platform_add_devices(sa11x0_devices, ARRAY_SIZE(sa11x0_devices)); |
316 | } | |
317 | ||
318 | arch_initcall(sa1100_init); | |
319 | ||
7fea1ba5 SG |
320 | void __init sa11x0_init_late(void) |
321 | { | |
322 | sa11x0_pm_init(); | |
323 | } | |
1da177e4 LT |
324 | |
325 | /* | |
326 | * Common I/O mapping: | |
327 | * | |
328 | * Typically, static virtual address mappings are as follow: | |
329 | * | |
330 | * 0xf0000000-0xf3ffffff: miscellaneous stuff (CPLDs, etc.) | |
331 | * 0xf4000000-0xf4ffffff: SA-1111 | |
332 | * 0xf5000000-0xf5ffffff: reserved (used by cache flushing area) | |
333 | * 0xf6000000-0xfffeffff: reserved (internal SA1100 IO defined above) | |
334 | * 0xffff0000-0xffff0fff: SA1100 exception vectors | |
335 | * 0xffff2000-0xffff2fff: Minicache copy_user_page area | |
336 | * | |
337 | * Below 0xe8000000 is reserved for vm allocation. | |
338 | * | |
339 | * The machine specific code must provide the extra mapping beside the | |
340 | * default mapping provided here. | |
341 | */ | |
342 | ||
343 | static struct map_desc standard_io_desc[] __initdata = { | |
bda03086 | 344 | { /* PCM */ |
92519d82 DS |
345 | .virtual = 0xf8000000, |
346 | .pfn = __phys_to_pfn(0x80000000), | |
347 | .length = 0x00100000, | |
348 | .type = MT_DEVICE | |
349 | }, { /* SCM */ | |
350 | .virtual = 0xfa000000, | |
351 | .pfn = __phys_to_pfn(0x90000000), | |
352 | .length = 0x00100000, | |
353 | .type = MT_DEVICE | |
354 | }, { /* MER */ | |
355 | .virtual = 0xfc000000, | |
356 | .pfn = __phys_to_pfn(0xa0000000), | |
357 | .length = 0x00100000, | |
358 | .type = MT_DEVICE | |
359 | }, { /* LCD + DMA */ | |
360 | .virtual = 0xfe000000, | |
361 | .pfn = __phys_to_pfn(0xb0000000), | |
362 | .length = 0x00200000, | |
363 | .type = MT_DEVICE | |
364 | }, | |
1da177e4 LT |
365 | }; |
366 | ||
367 | void __init sa1100_map_io(void) | |
368 | { | |
369 | iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc)); | |
370 | } | |
371 | ||
372 | /* | |
373 | * Disable the memory bus request/grant signals on the SA1110 to | |
374 | * ensure that we don't receive spurious memory requests. We set | |
375 | * the MBGNT signal false to ensure the SA1111 doesn't own the | |
376 | * SDRAM bus. | |
377 | */ | |
80ea2065 | 378 | void sa1110_mb_disable(void) |
1da177e4 LT |
379 | { |
380 | unsigned long flags; | |
381 | ||
382 | local_irq_save(flags); | |
383 | ||
384 | PGSR &= ~GPIO_MBGNT; | |
385 | GPCR = GPIO_MBGNT; | |
386 | GPDR = (GPDR & ~GPIO_MBREQ) | GPIO_MBGNT; | |
387 | ||
388 | GAFR &= ~(GPIO_MBGNT | GPIO_MBREQ); | |
389 | ||
390 | local_irq_restore(flags); | |
391 | } | |
392 | ||
393 | /* | |
394 | * If the system is going to use the SA-1111 DMA engines, set up | |
395 | * the memory bus request/grant pins. | |
396 | */ | |
80ea2065 | 397 | void sa1110_mb_enable(void) |
1da177e4 LT |
398 | { |
399 | unsigned long flags; | |
400 | ||
401 | local_irq_save(flags); | |
402 | ||
403 | PGSR &= ~GPIO_MBGNT; | |
404 | GPCR = GPIO_MBGNT; | |
405 | GPDR = (GPDR & ~GPIO_MBREQ) | GPIO_MBGNT; | |
406 | ||
407 | GAFR |= (GPIO_MBGNT | GPIO_MBREQ); | |
408 | TUCR |= TUCR_MR; | |
409 | ||
410 | local_irq_restore(flags); | |
411 | } | |
412 |