at91: move register clocks to soc generic init
[deliverable/linux.git] / arch / arm / mach-at91 / at91rm9200.c
CommitLineData
73a59c1c 1/*
9d041268 2 * arch/arm/mach-at91/at91rm9200.c
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3 *
4 * Copyright (C) 2005 SAN People
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 */
12
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13#include <linux/module.h>
14
80b02c17 15#include <asm/irq.h>
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16#include <asm/mach/arch.h>
17#include <asm/mach/map.h>
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18#include <mach/at91rm9200.h>
19#include <mach/at91_pmc.h>
20#include <mach/at91_st.h>
e57556e3 21#include <mach/cpu.h>
73a59c1c 22
21d08b9d 23#include "soc.h"
10e8e1fb 24#include "generic.h"
2eeaaa21 25#include "clock.h"
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26
27static struct map_desc at91rm9200_io_desc[] __initdata = {
28 {
73a59c1c 29 .virtual = AT91_VA_BASE_EMAC,
72729910 30 .pfn = __phys_to_pfn(AT91RM9200_BASE_EMAC),
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31 .length = SZ_16K,
32 .type = MT_DEVICE,
33 }, {
05043d08 34 .virtual = AT91_IO_VIRT_BASE - AT91RM9200_SRAM_SIZE,
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35 .pfn = __phys_to_pfn(AT91RM9200_SRAM_BASE),
36 .length = AT91RM9200_SRAM_SIZE,
10e8e1fb 37 .type = MT_DEVICE,
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38 },
39};
40
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41/* --------------------------------------------------------------------
42 * Clocks
43 * -------------------------------------------------------------------- */
44
45/*
46 * The peripheral clocks.
47 */
48static struct clk udc_clk = {
49 .name = "udc_clk",
50 .pmc_mask = 1 << AT91RM9200_ID_UDP,
51 .type = CLK_TYPE_PERIPHERAL,
52};
53static struct clk ohci_clk = {
54 .name = "ohci_clk",
55 .pmc_mask = 1 << AT91RM9200_ID_UHP,
56 .type = CLK_TYPE_PERIPHERAL,
57};
58static struct clk ether_clk = {
59 .name = "ether_clk",
60 .pmc_mask = 1 << AT91RM9200_ID_EMAC,
61 .type = CLK_TYPE_PERIPHERAL,
62};
63static struct clk mmc_clk = {
64 .name = "mci_clk",
65 .pmc_mask = 1 << AT91RM9200_ID_MCI,
66 .type = CLK_TYPE_PERIPHERAL,
67};
68static struct clk twi_clk = {
69 .name = "twi_clk",
70 .pmc_mask = 1 << AT91RM9200_ID_TWI,
71 .type = CLK_TYPE_PERIPHERAL,
72};
73static struct clk usart0_clk = {
74 .name = "usart0_clk",
75 .pmc_mask = 1 << AT91RM9200_ID_US0,
76 .type = CLK_TYPE_PERIPHERAL,
77};
78static struct clk usart1_clk = {
79 .name = "usart1_clk",
80 .pmc_mask = 1 << AT91RM9200_ID_US1,
81 .type = CLK_TYPE_PERIPHERAL,
82};
83static struct clk usart2_clk = {
84 .name = "usart2_clk",
85 .pmc_mask = 1 << AT91RM9200_ID_US2,
86 .type = CLK_TYPE_PERIPHERAL,
87};
88static struct clk usart3_clk = {
89 .name = "usart3_clk",
90 .pmc_mask = 1 << AT91RM9200_ID_US3,
91 .type = CLK_TYPE_PERIPHERAL,
92};
93static struct clk spi_clk = {
94 .name = "spi_clk",
95 .pmc_mask = 1 << AT91RM9200_ID_SPI,
96 .type = CLK_TYPE_PERIPHERAL,
97};
98static struct clk pioA_clk = {
99 .name = "pioA_clk",
100 .pmc_mask = 1 << AT91RM9200_ID_PIOA,
101 .type = CLK_TYPE_PERIPHERAL,
102};
103static struct clk pioB_clk = {
104 .name = "pioB_clk",
105 .pmc_mask = 1 << AT91RM9200_ID_PIOB,
106 .type = CLK_TYPE_PERIPHERAL,
107};
108static struct clk pioC_clk = {
109 .name = "pioC_clk",
110 .pmc_mask = 1 << AT91RM9200_ID_PIOC,
111 .type = CLK_TYPE_PERIPHERAL,
112};
113static struct clk pioD_clk = {
114 .name = "pioD_clk",
115 .pmc_mask = 1 << AT91RM9200_ID_PIOD,
116 .type = CLK_TYPE_PERIPHERAL,
117};
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118static struct clk ssc0_clk = {
119 .name = "ssc0_clk",
120 .pmc_mask = 1 << AT91RM9200_ID_SSC0,
121 .type = CLK_TYPE_PERIPHERAL,
122};
123static struct clk ssc1_clk = {
124 .name = "ssc1_clk",
125 .pmc_mask = 1 << AT91RM9200_ID_SSC1,
126 .type = CLK_TYPE_PERIPHERAL,
127};
128static struct clk ssc2_clk = {
129 .name = "ssc2_clk",
130 .pmc_mask = 1 << AT91RM9200_ID_SSC2,
131 .type = CLK_TYPE_PERIPHERAL,
132};
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133static struct clk tc0_clk = {
134 .name = "tc0_clk",
135 .pmc_mask = 1 << AT91RM9200_ID_TC0,
136 .type = CLK_TYPE_PERIPHERAL,
137};
138static struct clk tc1_clk = {
139 .name = "tc1_clk",
140 .pmc_mask = 1 << AT91RM9200_ID_TC1,
141 .type = CLK_TYPE_PERIPHERAL,
142};
143static struct clk tc2_clk = {
144 .name = "tc2_clk",
145 .pmc_mask = 1 << AT91RM9200_ID_TC2,
146 .type = CLK_TYPE_PERIPHERAL,
147};
148static struct clk tc3_clk = {
149 .name = "tc3_clk",
150 .pmc_mask = 1 << AT91RM9200_ID_TC3,
151 .type = CLK_TYPE_PERIPHERAL,
152};
153static struct clk tc4_clk = {
154 .name = "tc4_clk",
155 .pmc_mask = 1 << AT91RM9200_ID_TC4,
156 .type = CLK_TYPE_PERIPHERAL,
157};
158static struct clk tc5_clk = {
159 .name = "tc5_clk",
160 .pmc_mask = 1 << AT91RM9200_ID_TC5,
161 .type = CLK_TYPE_PERIPHERAL,
162};
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163
164static struct clk *periph_clocks[] __initdata = {
165 &pioA_clk,
166 &pioB_clk,
167 &pioC_clk,
168 &pioD_clk,
169 &usart0_clk,
170 &usart1_clk,
171 &usart2_clk,
172 &usart3_clk,
173 &mmc_clk,
174 &udc_clk,
175 &twi_clk,
176 &spi_clk,
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177 &ssc0_clk,
178 &ssc1_clk,
179 &ssc2_clk,
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180 &tc0_clk,
181 &tc1_clk,
182 &tc2_clk,
183 &tc3_clk,
184 &tc4_clk,
185 &tc5_clk,
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186 &ohci_clk,
187 &ether_clk,
188 // irq0 .. irq6
189};
190
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191static struct clk_lookup periph_clocks_lookups[] = {
192 CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.0", &tc0_clk),
193 CLKDEV_CON_DEV_ID("t1_clk", "atmel_tcb.0", &tc1_clk),
194 CLKDEV_CON_DEV_ID("t2_clk", "atmel_tcb.0", &tc2_clk),
195 CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.1", &tc3_clk),
196 CLKDEV_CON_DEV_ID("t1_clk", "atmel_tcb.1", &tc4_clk),
197 CLKDEV_CON_DEV_ID("t2_clk", "atmel_tcb.1", &tc5_clk),
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198 CLKDEV_CON_DEV_ID("pclk", "ssc.0", &ssc0_clk),
199 CLKDEV_CON_DEV_ID("pclk", "ssc.1", &ssc1_clk),
200 CLKDEV_CON_DEV_ID("pclk", "ssc.2", &ssc2_clk),
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201};
202
203static struct clk_lookup usart_clocks_lookups[] = {
204 CLKDEV_CON_DEV_ID("usart", "atmel_usart.0", &mck),
205 CLKDEV_CON_DEV_ID("usart", "atmel_usart.1", &usart0_clk),
206 CLKDEV_CON_DEV_ID("usart", "atmel_usart.2", &usart1_clk),
207 CLKDEV_CON_DEV_ID("usart", "atmel_usart.3", &usart2_clk),
208 CLKDEV_CON_DEV_ID("usart", "atmel_usart.4", &usart3_clk),
209};
210
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211/*
212 * The four programmable clocks.
213 * You must configure pin multiplexing to bring these signals out.
214 */
215static struct clk pck0 = {
216 .name = "pck0",
217 .pmc_mask = AT91_PMC_PCK0,
218 .type = CLK_TYPE_PROGRAMMABLE,
219 .id = 0,
220};
221static struct clk pck1 = {
222 .name = "pck1",
223 .pmc_mask = AT91_PMC_PCK1,
224 .type = CLK_TYPE_PROGRAMMABLE,
225 .id = 1,
226};
227static struct clk pck2 = {
228 .name = "pck2",
229 .pmc_mask = AT91_PMC_PCK2,
230 .type = CLK_TYPE_PROGRAMMABLE,
231 .id = 2,
232};
233static struct clk pck3 = {
234 .name = "pck3",
235 .pmc_mask = AT91_PMC_PCK3,
236 .type = CLK_TYPE_PROGRAMMABLE,
237 .id = 3,
238};
239
240static void __init at91rm9200_register_clocks(void)
73a59c1c 241{
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242 int i;
243
244 for (i = 0; i < ARRAY_SIZE(periph_clocks); i++)
245 clk_register(periph_clocks[i]);
246
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247 clkdev_add_table(periph_clocks_lookups,
248 ARRAY_SIZE(periph_clocks_lookups));
249 clkdev_add_table(usart_clocks_lookups,
250 ARRAY_SIZE(usart_clocks_lookups));
251
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252 clk_register(&pck0);
253 clk_register(&pck1);
254 clk_register(&pck2);
255 clk_register(&pck3);
256}
257
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258static struct clk_lookup console_clock_lookup;
259
260void __init at91rm9200_set_console_clock(int id)
261{
262 if (id >= ARRAY_SIZE(usart_clocks_lookups))
263 return;
264
265 console_clock_lookup.con_id = "usart";
266 console_clock_lookup.clk = usart_clocks_lookups[id].clk;
267 clkdev_add(&console_clock_lookup);
268}
269
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270/* --------------------------------------------------------------------
271 * GPIO
272 * -------------------------------------------------------------------- */
273
274static struct at91_gpio_bank at91rm9200_gpio[] = {
275 {
276 .id = AT91RM9200_ID_PIOA,
277 .offset = AT91_PIOA,
278 .clock = &pioA_clk,
279 }, {
280 .id = AT91RM9200_ID_PIOB,
281 .offset = AT91_PIOB,
282 .clock = &pioB_clk,
283 }, {
284 .id = AT91RM9200_ID_PIOC,
285 .offset = AT91_PIOC,
286 .clock = &pioC_clk,
287 }, {
288 .id = AT91RM9200_ID_PIOD,
289 .offset = AT91_PIOD,
290 .clock = &pioD_clk,
291 }
292};
2eeaaa21 293
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294static void at91rm9200_reset(void)
295{
296 /*
297 * Perform a hardware reset with the use of the Watchdog timer.
298 */
299 at91_sys_write(AT91_ST_WDMR, AT91_ST_RSTEN | AT91_ST_EXTEN | 1);
300 at91_sys_write(AT91_ST_CR, AT91_ST_WDRST);
301}
302
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303/* --------------------------------------------------------------------
304 * AT91RM9200 processor initialization
305 * -------------------------------------------------------------------- */
21d08b9d 306static void __init at91rm9200_map_io(void)
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307{
308 /* Map peripherals */
73a59c1c 309 iotable_init(at91rm9200_io_desc, ARRAY_SIZE(at91rm9200_io_desc));
1b021a3b 310}
2eeaaa21 311
46539374 312static void __init at91rm9200_initialize(void)
1b021a3b 313{
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314 at91_arch_reset = at91rm9200_reset;
315 at91_extern_irq = (1 << AT91RM9200_ID_IRQ0) | (1 << AT91RM9200_ID_IRQ1)
316 | (1 << AT91RM9200_ID_IRQ2) | (1 << AT91RM9200_ID_IRQ3)
317 | (1 << AT91RM9200_ID_IRQ4) | (1 << AT91RM9200_ID_IRQ5)
318 | (1 << AT91RM9200_ID_IRQ6);
319
f2173834 320 /* Initialize GPIO subsystem */
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321 at91_gpio_init(at91rm9200_gpio,
322 cpu_is_at91rm9200_bga() ? AT91RM9200_BGA : AT91RM9200_PQFP);
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323}
324
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325
326/* --------------------------------------------------------------------
327 * Interrupt initialization
328 * -------------------------------------------------------------------- */
329
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330/*
331 * The default interrupt priority levels (0 = lowest, 7 = highest).
332 */
333static unsigned int at91rm9200_default_irq_priority[NR_AIC_IRQS] __initdata = {
334 7, /* Advanced Interrupt Controller (FIQ) */
335 7, /* System Peripherals */
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336 1, /* Parallel IO Controller A */
337 1, /* Parallel IO Controller B */
338 1, /* Parallel IO Controller C */
339 1, /* Parallel IO Controller D */
340 5, /* USART 0 */
341 5, /* USART 1 */
342 5, /* USART 2 */
343 5, /* USART 3 */
ba854e18 344 0, /* Multimedia Card Interface */
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345 2, /* USB Device Port */
346 6, /* Two-Wire Interface */
347 5, /* Serial Peripheral Interface */
348 4, /* Serial Synchronous Controller 0 */
349 4, /* Serial Synchronous Controller 1 */
350 4, /* Serial Synchronous Controller 2 */
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351 0, /* Timer Counter 0 */
352 0, /* Timer Counter 1 */
353 0, /* Timer Counter 2 */
354 0, /* Timer Counter 3 */
355 0, /* Timer Counter 4 */
356 0, /* Timer Counter 5 */
7cbed2b5 357 2, /* USB Host port */
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358 3, /* Ethernet MAC */
359 0, /* Advanced Interrupt Controller (IRQ0) */
360 0, /* Advanced Interrupt Controller (IRQ1) */
361 0, /* Advanced Interrupt Controller (IRQ2) */
362 0, /* Advanced Interrupt Controller (IRQ3) */
363 0, /* Advanced Interrupt Controller (IRQ4) */
364 0, /* Advanced Interrupt Controller (IRQ5) */
365 0 /* Advanced Interrupt Controller (IRQ6) */
366};
367
8c3583b6 368struct at91_init_soc __initdata at91rm9200_soc = {
21d08b9d 369 .map_io = at91rm9200_map_io,
92100c12 370 .default_irq_priority = at91rm9200_default_irq_priority,
51ddec76 371 .register_clocks = at91rm9200_register_clocks,
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372 .init = at91rm9200_initialize,
373};
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