Merge branch 'drivers/macb-gem-cleanup' into at91/gpio
[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"
faee0cc3 26#include "sam9_smc.h"
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27
28static struct map_desc at91rm9200_io_desc[] __initdata = {
29 {
73a59c1c 30 .virtual = AT91_VA_BASE_EMAC,
72729910 31 .pfn = __phys_to_pfn(AT91RM9200_BASE_EMAC),
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32 .length = SZ_16K,
33 .type = MT_DEVICE,
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34 },
35};
36
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37/* --------------------------------------------------------------------
38 * Clocks
39 * -------------------------------------------------------------------- */
40
41/*
42 * The peripheral clocks.
43 */
44static struct clk udc_clk = {
45 .name = "udc_clk",
46 .pmc_mask = 1 << AT91RM9200_ID_UDP,
47 .type = CLK_TYPE_PERIPHERAL,
48};
49static struct clk ohci_clk = {
50 .name = "ohci_clk",
51 .pmc_mask = 1 << AT91RM9200_ID_UHP,
52 .type = CLK_TYPE_PERIPHERAL,
53};
54static struct clk ether_clk = {
55 .name = "ether_clk",
56 .pmc_mask = 1 << AT91RM9200_ID_EMAC,
57 .type = CLK_TYPE_PERIPHERAL,
58};
59static struct clk mmc_clk = {
60 .name = "mci_clk",
61 .pmc_mask = 1 << AT91RM9200_ID_MCI,
62 .type = CLK_TYPE_PERIPHERAL,
63};
64static struct clk twi_clk = {
65 .name = "twi_clk",
66 .pmc_mask = 1 << AT91RM9200_ID_TWI,
67 .type = CLK_TYPE_PERIPHERAL,
68};
69static struct clk usart0_clk = {
70 .name = "usart0_clk",
71 .pmc_mask = 1 << AT91RM9200_ID_US0,
72 .type = CLK_TYPE_PERIPHERAL,
73};
74static struct clk usart1_clk = {
75 .name = "usart1_clk",
76 .pmc_mask = 1 << AT91RM9200_ID_US1,
77 .type = CLK_TYPE_PERIPHERAL,
78};
79static struct clk usart2_clk = {
80 .name = "usart2_clk",
81 .pmc_mask = 1 << AT91RM9200_ID_US2,
82 .type = CLK_TYPE_PERIPHERAL,
83};
84static struct clk usart3_clk = {
85 .name = "usart3_clk",
86 .pmc_mask = 1 << AT91RM9200_ID_US3,
87 .type = CLK_TYPE_PERIPHERAL,
88};
89static struct clk spi_clk = {
90 .name = "spi_clk",
91 .pmc_mask = 1 << AT91RM9200_ID_SPI,
92 .type = CLK_TYPE_PERIPHERAL,
93};
94static struct clk pioA_clk = {
95 .name = "pioA_clk",
96 .pmc_mask = 1 << AT91RM9200_ID_PIOA,
97 .type = CLK_TYPE_PERIPHERAL,
98};
99static struct clk pioB_clk = {
100 .name = "pioB_clk",
101 .pmc_mask = 1 << AT91RM9200_ID_PIOB,
102 .type = CLK_TYPE_PERIPHERAL,
103};
104static struct clk pioC_clk = {
105 .name = "pioC_clk",
106 .pmc_mask = 1 << AT91RM9200_ID_PIOC,
107 .type = CLK_TYPE_PERIPHERAL,
108};
109static struct clk pioD_clk = {
110 .name = "pioD_clk",
111 .pmc_mask = 1 << AT91RM9200_ID_PIOD,
112 .type = CLK_TYPE_PERIPHERAL,
113};
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114static struct clk ssc0_clk = {
115 .name = "ssc0_clk",
116 .pmc_mask = 1 << AT91RM9200_ID_SSC0,
117 .type = CLK_TYPE_PERIPHERAL,
118};
119static struct clk ssc1_clk = {
120 .name = "ssc1_clk",
121 .pmc_mask = 1 << AT91RM9200_ID_SSC1,
122 .type = CLK_TYPE_PERIPHERAL,
123};
124static struct clk ssc2_clk = {
125 .name = "ssc2_clk",
126 .pmc_mask = 1 << AT91RM9200_ID_SSC2,
127 .type = CLK_TYPE_PERIPHERAL,
128};
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129static struct clk tc0_clk = {
130 .name = "tc0_clk",
131 .pmc_mask = 1 << AT91RM9200_ID_TC0,
132 .type = CLK_TYPE_PERIPHERAL,
133};
134static struct clk tc1_clk = {
135 .name = "tc1_clk",
136 .pmc_mask = 1 << AT91RM9200_ID_TC1,
137 .type = CLK_TYPE_PERIPHERAL,
138};
139static struct clk tc2_clk = {
140 .name = "tc2_clk",
141 .pmc_mask = 1 << AT91RM9200_ID_TC2,
142 .type = CLK_TYPE_PERIPHERAL,
143};
144static struct clk tc3_clk = {
145 .name = "tc3_clk",
146 .pmc_mask = 1 << AT91RM9200_ID_TC3,
147 .type = CLK_TYPE_PERIPHERAL,
148};
149static struct clk tc4_clk = {
150 .name = "tc4_clk",
151 .pmc_mask = 1 << AT91RM9200_ID_TC4,
152 .type = CLK_TYPE_PERIPHERAL,
153};
154static struct clk tc5_clk = {
155 .name = "tc5_clk",
156 .pmc_mask = 1 << AT91RM9200_ID_TC5,
157 .type = CLK_TYPE_PERIPHERAL,
158};
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159
160static struct clk *periph_clocks[] __initdata = {
161 &pioA_clk,
162 &pioB_clk,
163 &pioC_clk,
164 &pioD_clk,
165 &usart0_clk,
166 &usart1_clk,
167 &usart2_clk,
168 &usart3_clk,
169 &mmc_clk,
170 &udc_clk,
171 &twi_clk,
172 &spi_clk,
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173 &ssc0_clk,
174 &ssc1_clk,
175 &ssc2_clk,
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176 &tc0_clk,
177 &tc1_clk,
178 &tc2_clk,
179 &tc3_clk,
180 &tc4_clk,
181 &tc5_clk,
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182 &ohci_clk,
183 &ether_clk,
184 // irq0 .. irq6
185};
186
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187static struct clk_lookup periph_clocks_lookups[] = {
188 CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.0", &tc0_clk),
189 CLKDEV_CON_DEV_ID("t1_clk", "atmel_tcb.0", &tc1_clk),
190 CLKDEV_CON_DEV_ID("t2_clk", "atmel_tcb.0", &tc2_clk),
191 CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.1", &tc3_clk),
192 CLKDEV_CON_DEV_ID("t1_clk", "atmel_tcb.1", &tc4_clk),
193 CLKDEV_CON_DEV_ID("t2_clk", "atmel_tcb.1", &tc5_clk),
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194 CLKDEV_CON_DEV_ID("pclk", "ssc.0", &ssc0_clk),
195 CLKDEV_CON_DEV_ID("pclk", "ssc.1", &ssc1_clk),
196 CLKDEV_CON_DEV_ID("pclk", "ssc.2", &ssc2_clk),
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197 /* fake hclk clock */
198 CLKDEV_CON_DEV_ID("hclk", "at91_ohci", &ohci_clk),
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199};
200
201static struct clk_lookup usart_clocks_lookups[] = {
202 CLKDEV_CON_DEV_ID("usart", "atmel_usart.0", &mck),
203 CLKDEV_CON_DEV_ID("usart", "atmel_usart.1", &usart0_clk),
204 CLKDEV_CON_DEV_ID("usart", "atmel_usart.2", &usart1_clk),
205 CLKDEV_CON_DEV_ID("usart", "atmel_usart.3", &usart2_clk),
206 CLKDEV_CON_DEV_ID("usart", "atmel_usart.4", &usart3_clk),
207};
208
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209/*
210 * The four programmable clocks.
211 * You must configure pin multiplexing to bring these signals out.
212 */
213static struct clk pck0 = {
214 .name = "pck0",
215 .pmc_mask = AT91_PMC_PCK0,
216 .type = CLK_TYPE_PROGRAMMABLE,
217 .id = 0,
218};
219static struct clk pck1 = {
220 .name = "pck1",
221 .pmc_mask = AT91_PMC_PCK1,
222 .type = CLK_TYPE_PROGRAMMABLE,
223 .id = 1,
224};
225static struct clk pck2 = {
226 .name = "pck2",
227 .pmc_mask = AT91_PMC_PCK2,
228 .type = CLK_TYPE_PROGRAMMABLE,
229 .id = 2,
230};
231static struct clk pck3 = {
232 .name = "pck3",
233 .pmc_mask = AT91_PMC_PCK3,
234 .type = CLK_TYPE_PROGRAMMABLE,
235 .id = 3,
236};
237
238static void __init at91rm9200_register_clocks(void)
73a59c1c 239{
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240 int i;
241
242 for (i = 0; i < ARRAY_SIZE(periph_clocks); i++)
243 clk_register(periph_clocks[i]);
244
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245 clkdev_add_table(periph_clocks_lookups,
246 ARRAY_SIZE(periph_clocks_lookups));
247 clkdev_add_table(usart_clocks_lookups,
248 ARRAY_SIZE(usart_clocks_lookups));
249
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250 clk_register(&pck0);
251 clk_register(&pck1);
252 clk_register(&pck2);
253 clk_register(&pck3);
254}
255
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256static struct clk_lookup console_clock_lookup;
257
258void __init at91rm9200_set_console_clock(int id)
259{
260 if (id >= ARRAY_SIZE(usart_clocks_lookups))
261 return;
262
263 console_clock_lookup.con_id = "usart";
264 console_clock_lookup.clk = usart_clocks_lookups[id].clk;
265 clkdev_add(&console_clock_lookup);
266}
267
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268/* --------------------------------------------------------------------
269 * GPIO
270 * -------------------------------------------------------------------- */
271
272static struct at91_gpio_bank at91rm9200_gpio[] = {
273 {
274 .id = AT91RM9200_ID_PIOA,
80e91cb8 275 .regbase = AT91RM9200_BASE_PIOA,
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276 .clock = &pioA_clk,
277 }, {
278 .id = AT91RM9200_ID_PIOB,
80e91cb8 279 .regbase = AT91RM9200_BASE_PIOB,
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280 .clock = &pioB_clk,
281 }, {
282 .id = AT91RM9200_ID_PIOC,
80e91cb8 283 .regbase = AT91RM9200_BASE_PIOC,
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284 .clock = &pioC_clk,
285 }, {
286 .id = AT91RM9200_ID_PIOD,
80e91cb8 287 .regbase = AT91RM9200_BASE_PIOD,
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288 .clock = &pioD_clk,
289 }
290};
2eeaaa21 291
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292static void at91rm9200_reset(void)
293{
294 /*
295 * Perform a hardware reset with the use of the Watchdog timer.
296 */
297 at91_sys_write(AT91_ST_WDMR, AT91_ST_RSTEN | AT91_ST_EXTEN | 1);
298 at91_sys_write(AT91_ST_CR, AT91_ST_WDRST);
299}
300
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301/* --------------------------------------------------------------------
302 * AT91RM9200 processor initialization
303 * -------------------------------------------------------------------- */
21d08b9d 304static void __init at91rm9200_map_io(void)
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305{
306 /* Map peripherals */
f0051d82 307 at91_init_sram(0, AT91RM9200_SRAM_BASE, AT91RM9200_SRAM_SIZE);
73a59c1c 308 iotable_init(at91rm9200_io_desc, ARRAY_SIZE(at91rm9200_io_desc));
1b021a3b 309}
2eeaaa21 310
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311static void __init at91rm9200_ioremap_registers(void)
312{
313}
314
46539374 315static void __init at91rm9200_initialize(void)
1b021a3b 316{
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317 at91_arch_reset = at91rm9200_reset;
318 at91_extern_irq = (1 << AT91RM9200_ID_IRQ0) | (1 << AT91RM9200_ID_IRQ1)
319 | (1 << AT91RM9200_ID_IRQ2) | (1 << AT91RM9200_ID_IRQ3)
320 | (1 << AT91RM9200_ID_IRQ4) | (1 << AT91RM9200_ID_IRQ5)
321 | (1 << AT91RM9200_ID_IRQ6);
322
f2173834 323 /* Initialize GPIO subsystem */
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324 at91_gpio_init(at91rm9200_gpio,
325 cpu_is_at91rm9200_bga() ? AT91RM9200_BGA : AT91RM9200_PQFP);
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326}
327
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328
329/* --------------------------------------------------------------------
330 * Interrupt initialization
331 * -------------------------------------------------------------------- */
332
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333/*
334 * The default interrupt priority levels (0 = lowest, 7 = highest).
335 */
336static unsigned int at91rm9200_default_irq_priority[NR_AIC_IRQS] __initdata = {
337 7, /* Advanced Interrupt Controller (FIQ) */
338 7, /* System Peripherals */
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339 1, /* Parallel IO Controller A */
340 1, /* Parallel IO Controller B */
341 1, /* Parallel IO Controller C */
342 1, /* Parallel IO Controller D */
343 5, /* USART 0 */
344 5, /* USART 1 */
345 5, /* USART 2 */
346 5, /* USART 3 */
ba854e18 347 0, /* Multimedia Card Interface */
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348 2, /* USB Device Port */
349 6, /* Two-Wire Interface */
350 5, /* Serial Peripheral Interface */
351 4, /* Serial Synchronous Controller 0 */
352 4, /* Serial Synchronous Controller 1 */
353 4, /* Serial Synchronous Controller 2 */
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354 0, /* Timer Counter 0 */
355 0, /* Timer Counter 1 */
356 0, /* Timer Counter 2 */
357 0, /* Timer Counter 3 */
358 0, /* Timer Counter 4 */
359 0, /* Timer Counter 5 */
7cbed2b5 360 2, /* USB Host port */
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361 3, /* Ethernet MAC */
362 0, /* Advanced Interrupt Controller (IRQ0) */
363 0, /* Advanced Interrupt Controller (IRQ1) */
364 0, /* Advanced Interrupt Controller (IRQ2) */
365 0, /* Advanced Interrupt Controller (IRQ3) */
366 0, /* Advanced Interrupt Controller (IRQ4) */
367 0, /* Advanced Interrupt Controller (IRQ5) */
368 0 /* Advanced Interrupt Controller (IRQ6) */
369};
370
8c3583b6 371struct at91_init_soc __initdata at91rm9200_soc = {
21d08b9d 372 .map_io = at91rm9200_map_io,
92100c12 373 .default_irq_priority = at91rm9200_default_irq_priority,
cfa5a1fe 374 .ioremap_registers = at91rm9200_ioremap_registers,
51ddec76 375 .register_clocks = at91rm9200_register_clocks,
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376 .init = at91rm9200_initialize,
377};
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