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Andrew Victor62c16602006-11-30 12:27:38 +01001/*
Andrew Victor9d041262007-02-05 11:42:07 +01002 * arch/arm/mach-at91/at91sam9260.c
Andrew Victor62c16602006-11-30 12:27:38 +01003 *
4 * Copyright (C) 2006 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
13#include <linux/module.h>
Andrew Victor3ef2fb42008-04-02 21:36:06 +010014#include <linux/pm.h>
Andrew Victor62c16602006-11-30 12:27:38 +010015
Russell King80b02c12009-01-08 10:01:47 +000016#include <asm/irq.h>
Andrew Victor62c16602006-11-30 12:27:38 +010017#include <asm/mach/arch.h>
18#include <asm/mach/map.h>
Russell Kinga09e64f2008-08-05 16:14:15 +010019#include <mach/cpu.h>
20#include <mach/at91sam9260.h>
21#include <mach/at91_pmc.h>
22#include <mach/at91_rstc.h>
23#include <mach/at91_shdwc.h>
Andrew Victor62c16602006-11-30 12:27:38 +010024
25#include "generic.h"
26#include "clock.h"
27
28static struct map_desc at91sam9260_io_desc[] __initdata = {
29 {
30 .virtual = AT91_VA_BASE_SYS,
31 .pfn = __phys_to_pfn(AT91_BASE_SYS),
32 .length = SZ_16K,
33 .type = MT_DEVICE,
Andrew Victorf7eee892007-02-15 08:17:38 +010034 }
35};
36
37static struct map_desc at91sam9260_sram_desc[] __initdata = {
38 {
Andrew Victor62c16602006-11-30 12:27:38 +010039 .virtual = AT91_IO_VIRT_BASE - AT91SAM9260_SRAM0_SIZE,
40 .pfn = __phys_to_pfn(AT91SAM9260_SRAM0_BASE),
41 .length = AT91SAM9260_SRAM0_SIZE,
42 .type = MT_DEVICE,
43 }, {
44 .virtual = AT91_IO_VIRT_BASE - AT91SAM9260_SRAM0_SIZE - AT91SAM9260_SRAM1_SIZE,
45 .pfn = __phys_to_pfn(AT91SAM9260_SRAM1_BASE),
46 .length = AT91SAM9260_SRAM1_SIZE,
47 .type = MT_DEVICE,
Andrew Victorf7eee892007-02-15 08:17:38 +010048 }
49};
50
sedji gaouaou61352662008-07-10 10:15:35 +010051static struct map_desc at91sam9g20_sram_desc[] __initdata = {
52 {
53 .virtual = AT91_IO_VIRT_BASE - AT91SAM9G20_SRAM0_SIZE,
54 .pfn = __phys_to_pfn(AT91SAM9G20_SRAM0_BASE),
55 .length = AT91SAM9G20_SRAM0_SIZE,
56 .type = MT_DEVICE,
57 }, {
58 .virtual = AT91_IO_VIRT_BASE - AT91SAM9G20_SRAM0_SIZE - AT91SAM9G20_SRAM1_SIZE,
59 .pfn = __phys_to_pfn(AT91SAM9G20_SRAM1_BASE),
60 .length = AT91SAM9G20_SRAM1_SIZE,
61 .type = MT_DEVICE,
62 }
63};
64
Andrew Victorf7eee892007-02-15 08:17:38 +010065static struct map_desc at91sam9xe_sram_desc[] __initdata = {
66 {
67 .pfn = __phys_to_pfn(AT91SAM9XE_SRAM_BASE),
68 .type = MT_DEVICE,
69 }
Andrew Victor62c16602006-11-30 12:27:38 +010070};
71
72/* --------------------------------------------------------------------
73 * Clocks
74 * -------------------------------------------------------------------- */
75
76/*
77 * The peripheral clocks.
78 */
79static struct clk pioA_clk = {
80 .name = "pioA_clk",
81 .pmc_mask = 1 << AT91SAM9260_ID_PIOA,
82 .type = CLK_TYPE_PERIPHERAL,
83};
84static struct clk pioB_clk = {
85 .name = "pioB_clk",
86 .pmc_mask = 1 << AT91SAM9260_ID_PIOB,
87 .type = CLK_TYPE_PERIPHERAL,
88};
89static struct clk pioC_clk = {
90 .name = "pioC_clk",
91 .pmc_mask = 1 << AT91SAM9260_ID_PIOC,
92 .type = CLK_TYPE_PERIPHERAL,
93};
94static struct clk adc_clk = {
95 .name = "adc_clk",
96 .pmc_mask = 1 << AT91SAM9260_ID_ADC,
97 .type = CLK_TYPE_PERIPHERAL,
98};
99static struct clk usart0_clk = {
100 .name = "usart0_clk",
101 .pmc_mask = 1 << AT91SAM9260_ID_US0,
102 .type = CLK_TYPE_PERIPHERAL,
103};
104static struct clk usart1_clk = {
105 .name = "usart1_clk",
106 .pmc_mask = 1 << AT91SAM9260_ID_US1,
107 .type = CLK_TYPE_PERIPHERAL,
108};
109static struct clk usart2_clk = {
110 .name = "usart2_clk",
111 .pmc_mask = 1 << AT91SAM9260_ID_US2,
112 .type = CLK_TYPE_PERIPHERAL,
113};
114static struct clk mmc_clk = {
115 .name = "mci_clk",
116 .pmc_mask = 1 << AT91SAM9260_ID_MCI,
117 .type = CLK_TYPE_PERIPHERAL,
118};
119static struct clk udc_clk = {
120 .name = "udc_clk",
121 .pmc_mask = 1 << AT91SAM9260_ID_UDP,
122 .type = CLK_TYPE_PERIPHERAL,
123};
124static struct clk twi_clk = {
125 .name = "twi_clk",
126 .pmc_mask = 1 << AT91SAM9260_ID_TWI,
127 .type = CLK_TYPE_PERIPHERAL,
128};
129static struct clk spi0_clk = {
130 .name = "spi0_clk",
131 .pmc_mask = 1 << AT91SAM9260_ID_SPI0,
132 .type = CLK_TYPE_PERIPHERAL,
133};
134static struct clk spi1_clk = {
135 .name = "spi1_clk",
136 .pmc_mask = 1 << AT91SAM9260_ID_SPI1,
137 .type = CLK_TYPE_PERIPHERAL,
138};
Andrew Victore8788ba2007-05-02 17:14:57 +0100139static struct clk ssc_clk = {
140 .name = "ssc_clk",
141 .pmc_mask = 1 << AT91SAM9260_ID_SSC,
142 .type = CLK_TYPE_PERIPHERAL,
143};
Andrew Victorc177a1e2007-02-08 10:25:38 +0100144static struct clk tc0_clk = {
145 .name = "tc0_clk",
146 .pmc_mask = 1 << AT91SAM9260_ID_TC0,
147 .type = CLK_TYPE_PERIPHERAL,
148};
149static struct clk tc1_clk = {
150 .name = "tc1_clk",
151 .pmc_mask = 1 << AT91SAM9260_ID_TC1,
152 .type = CLK_TYPE_PERIPHERAL,
153};
154static struct clk tc2_clk = {
155 .name = "tc2_clk",
156 .pmc_mask = 1 << AT91SAM9260_ID_TC2,
157 .type = CLK_TYPE_PERIPHERAL,
158};
Andrew Victor62c16602006-11-30 12:27:38 +0100159static struct clk ohci_clk = {
160 .name = "ohci_clk",
161 .pmc_mask = 1 << AT91SAM9260_ID_UHP,
162 .type = CLK_TYPE_PERIPHERAL,
163};
Andrew Victor69b2e992007-02-14 08:44:43 +0100164static struct clk macb_clk = {
165 .name = "macb_clk",
Andrew Victor62c16602006-11-30 12:27:38 +0100166 .pmc_mask = 1 << AT91SAM9260_ID_EMAC,
167 .type = CLK_TYPE_PERIPHERAL,
168};
169static struct clk isi_clk = {
170 .name = "isi_clk",
171 .pmc_mask = 1 << AT91SAM9260_ID_ISI,
172 .type = CLK_TYPE_PERIPHERAL,
173};
174static struct clk usart3_clk = {
175 .name = "usart3_clk",
176 .pmc_mask = 1 << AT91SAM9260_ID_US3,
177 .type = CLK_TYPE_PERIPHERAL,
178};
179static struct clk usart4_clk = {
180 .name = "usart4_clk",
181 .pmc_mask = 1 << AT91SAM9260_ID_US4,
182 .type = CLK_TYPE_PERIPHERAL,
183};
184static struct clk usart5_clk = {
185 .name = "usart5_clk",
186 .pmc_mask = 1 << AT91SAM9260_ID_US5,
187 .type = CLK_TYPE_PERIPHERAL,
188};
Andrew Victorc177a1e2007-02-08 10:25:38 +0100189static struct clk tc3_clk = {
190 .name = "tc3_clk",
191 .pmc_mask = 1 << AT91SAM9260_ID_TC3,
192 .type = CLK_TYPE_PERIPHERAL,
193};
194static struct clk tc4_clk = {
195 .name = "tc4_clk",
196 .pmc_mask = 1 << AT91SAM9260_ID_TC4,
197 .type = CLK_TYPE_PERIPHERAL,
198};
199static struct clk tc5_clk = {
200 .name = "tc5_clk",
201 .pmc_mask = 1 << AT91SAM9260_ID_TC5,
202 .type = CLK_TYPE_PERIPHERAL,
203};
Andrew Victor62c16602006-11-30 12:27:38 +0100204
205static struct clk *periph_clocks[] __initdata = {
206 &pioA_clk,
207 &pioB_clk,
208 &pioC_clk,
209 &adc_clk,
210 &usart0_clk,
211 &usart1_clk,
212 &usart2_clk,
213 &mmc_clk,
214 &udc_clk,
215 &twi_clk,
216 &spi0_clk,
217 &spi1_clk,
Andrew Victore8788ba2007-05-02 17:14:57 +0100218 &ssc_clk,
Andrew Victorc177a1e2007-02-08 10:25:38 +0100219 &tc0_clk,
220 &tc1_clk,
221 &tc2_clk,
Andrew Victor62c16602006-11-30 12:27:38 +0100222 &ohci_clk,
Andrew Victor69b2e992007-02-14 08:44:43 +0100223 &macb_clk,
Andrew Victor62c16602006-11-30 12:27:38 +0100224 &isi_clk,
225 &usart3_clk,
226 &usart4_clk,
227 &usart5_clk,
Andrew Victorc177a1e2007-02-08 10:25:38 +0100228 &tc3_clk,
229 &tc4_clk,
230 &tc5_clk,
Andrew Victor62c16602006-11-30 12:27:38 +0100231 // irq0 .. irq2
232};
233
234/*
235 * The two programmable clocks.
236 * You must configure pin multiplexing to bring these signals out.
237 */
238static struct clk pck0 = {
239 .name = "pck0",
240 .pmc_mask = AT91_PMC_PCK0,
241 .type = CLK_TYPE_PROGRAMMABLE,
242 .id = 0,
243};
244static struct clk pck1 = {
245 .name = "pck1",
246 .pmc_mask = AT91_PMC_PCK1,
247 .type = CLK_TYPE_PROGRAMMABLE,
248 .id = 1,
249};
250
251static void __init at91sam9260_register_clocks(void)
252{
253 int i;
254
255 for (i = 0; i < ARRAY_SIZE(periph_clocks); i++)
256 clk_register(periph_clocks[i]);
257
258 clk_register(&pck0);
259 clk_register(&pck1);
260}
261
262/* --------------------------------------------------------------------
263 * GPIO
264 * -------------------------------------------------------------------- */
265
266static struct at91_gpio_bank at91sam9260_gpio[] = {
267 {
268 .id = AT91SAM9260_ID_PIOA,
269 .offset = AT91_PIOA,
270 .clock = &pioA_clk,
271 }, {
272 .id = AT91SAM9260_ID_PIOB,
273 .offset = AT91_PIOB,
274 .clock = &pioB_clk,
275 }, {
276 .id = AT91SAM9260_ID_PIOC,
277 .offset = AT91_PIOC,
278 .clock = &pioC_clk,
279 }
280};
281
Andrew Victor3ef2fb42008-04-02 21:36:06 +0100282static void at91sam9260_poweroff(void)
283{
284 at91_sys_write(AT91_SHDW_CR, AT91_SHDW_KEY | AT91_SHDW_SHDW);
285}
286
Andrew Victor62c16602006-11-30 12:27:38 +0100287
288/* --------------------------------------------------------------------
289 * AT91SAM9260 processor initialization
290 * -------------------------------------------------------------------- */
291
Jean-Christophe PLAGNIOL-VILLARD1b021a32011-04-28 20:19:32 +0800292static void __init at91sam9xe_map_io(void)
Andrew Victorf7eee892007-02-15 08:17:38 +0100293{
294 unsigned long cidr, sram_size;
295
296 cidr = at91_sys_read(AT91_DBGU_CIDR);
297
298 switch (cidr & AT91_CIDR_SRAMSIZ) {
299 case AT91_CIDR_SRAMSIZ_32K:
300 sram_size = 2 * SZ_16K;
301 break;
302 case AT91_CIDR_SRAMSIZ_16K:
303 default:
304 sram_size = SZ_16K;
305 }
306
307 at91sam9xe_sram_desc->virtual = AT91_IO_VIRT_BASE - sram_size;
308 at91sam9xe_sram_desc->length = sram_size;
309
310 iotable_init(at91sam9xe_sram_desc, ARRAY_SIZE(at91sam9xe_sram_desc));
311}
312
Jean-Christophe PLAGNIOL-VILLARD1b021a32011-04-28 20:19:32 +0800313void __init at91sam9260_map_io(void)
Andrew Victor62c16602006-11-30 12:27:38 +0100314{
315 /* Map peripherals */
316 iotable_init(at91sam9260_io_desc, ARRAY_SIZE(at91sam9260_io_desc));
317
Andrew Victorf7eee892007-02-15 08:17:38 +0100318 if (cpu_is_at91sam9xe())
Jean-Christophe PLAGNIOL-VILLARD1b021a32011-04-28 20:19:32 +0800319 at91sam9xe_map_io();
sedji gaouaou61352662008-07-10 10:15:35 +0100320 else if (cpu_is_at91sam9g20())
321 iotable_init(at91sam9g20_sram_desc, ARRAY_SIZE(at91sam9g20_sram_desc));
Andrew Victorf7eee892007-02-15 08:17:38 +0100322 else
323 iotable_init(at91sam9260_sram_desc, ARRAY_SIZE(at91sam9260_sram_desc));
Jean-Christophe PLAGNIOL-VILLARD1b021a32011-04-28 20:19:32 +0800324}
Andrew Victorf7eee892007-02-15 08:17:38 +0100325
Jean-Christophe PLAGNIOL-VILLARD1b021a32011-04-28 20:19:32 +0800326void __init at91sam9260_initialize(unsigned long main_clock)
327{
Nicolas Ferrebb413db2010-10-14 19:14:00 +0200328 at91_arch_reset = at91sam9_alt_reset;
Andrew Victor3ef2fb42008-04-02 21:36:06 +0100329 pm_power_off = at91sam9260_poweroff;
Andrew Victor62c16602006-11-30 12:27:38 +0100330 at91_extern_irq = (1 << AT91SAM9260_ID_IRQ0) | (1 << AT91SAM9260_ID_IRQ1)
331 | (1 << AT91SAM9260_ID_IRQ2);
332
333 /* Init clock subsystem */
334 at91_clock_init(main_clock);
335
336 /* Register the processor-specific clocks */
337 at91sam9260_register_clocks();
338
339 /* Register GPIO subsystem */
340 at91_gpio_init(at91sam9260_gpio, 3);
341}
342
343/* --------------------------------------------------------------------
344 * Interrupt initialization
345 * -------------------------------------------------------------------- */
346
347/*
348 * The default interrupt priority levels (0 = lowest, 7 = highest).
349 */
350static unsigned int at91sam9260_default_irq_priority[NR_AIC_IRQS] __initdata = {
351 7, /* Advanced Interrupt Controller */
352 7, /* System Peripherals */
Andrew Victor7cbed2b2007-11-20 08:46:53 +0100353 1, /* Parallel IO Controller A */
354 1, /* Parallel IO Controller B */
355 1, /* Parallel IO Controller C */
Andrew Victor62c16602006-11-30 12:27:38 +0100356 0, /* Analog-to-Digital Converter */
Andrew Victor7cbed2b2007-11-20 08:46:53 +0100357 5, /* USART 0 */
358 5, /* USART 1 */
359 5, /* USART 2 */
Andrew Victor62c16602006-11-30 12:27:38 +0100360 0, /* Multimedia Card Interface */
Andrew Victor7cbed2b2007-11-20 08:46:53 +0100361 2, /* USB Device Port */
362 6, /* Two-Wire Interface */
363 5, /* Serial Peripheral Interface 0 */
364 5, /* Serial Peripheral Interface 1 */
Andrew Victor62c16602006-11-30 12:27:38 +0100365 5, /* Serial Synchronous Controller */
366 0,
367 0,
368 0, /* Timer Counter 0 */
369 0, /* Timer Counter 1 */
370 0, /* Timer Counter 2 */
Andrew Victor7cbed2b2007-11-20 08:46:53 +0100371 2, /* USB Host port */
Andrew Victor62c16602006-11-30 12:27:38 +0100372 3, /* Ethernet */
373 0, /* Image Sensor Interface */
Andrew Victor7cbed2b2007-11-20 08:46:53 +0100374 5, /* USART 3 */
375 5, /* USART 4 */
376 5, /* USART 5 */
Andrew Victor62c16602006-11-30 12:27:38 +0100377 0, /* Timer Counter 3 */
378 0, /* Timer Counter 4 */
379 0, /* Timer Counter 5 */
380 0, /* Advanced Interrupt Controller */
381 0, /* Advanced Interrupt Controller */
382 0, /* Advanced Interrupt Controller */
383};
384
385void __init at91sam9260_init_interrupts(unsigned int priority[NR_AIC_IRQS])
386{
387 if (!priority)
388 priority = at91sam9260_default_irq_priority;
389
390 /* Initialize the AIC interrupt controller */
391 at91_aic_init(priority);
392
393 /* Enable GPIO interrupts */
394 at91_gpio_irq_setup();
395}