Merge tag 'timer' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
[deliverable/linux.git] / arch / arm / mach-at91 / at91sam9261.c
CommitLineData
62c1660d 1/*
9d041268 2 * arch/arm/mach-at91/at91sam9261.c
62c1660d
AV
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
13#include <linux/module.h>
14
c9dfafba 15#include <asm/proc-fns.h>
80b02c17 16#include <asm/irq.h>
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17#include <asm/mach/arch.h>
18#include <asm/mach/map.h>
9f97da78 19#include <asm/system_misc.h>
b319ff80 20#include <mach/cpu.h>
a09e64fb 21#include <mach/at91sam9261.h>
8fe82a55 22#include <mach/at91_aic.h>
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23#include <mach/at91_pmc.h>
24#include <mach/at91_rstc.h>
62c1660d 25
21d08b9d 26#include "soc.h"
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27#include "generic.h"
28#include "clock.h"
faee0cc3 29#include "sam9_smc.h"
62c1660d 30
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AV
31/* --------------------------------------------------------------------
32 * Clocks
33 * -------------------------------------------------------------------- */
34
35/*
36 * The peripheral clocks.
37 */
38static struct clk pioA_clk = {
39 .name = "pioA_clk",
40 .pmc_mask = 1 << AT91SAM9261_ID_PIOA,
41 .type = CLK_TYPE_PERIPHERAL,
42};
43static struct clk pioB_clk = {
44 .name = "pioB_clk",
45 .pmc_mask = 1 << AT91SAM9261_ID_PIOB,
46 .type = CLK_TYPE_PERIPHERAL,
47};
48static struct clk pioC_clk = {
49 .name = "pioC_clk",
50 .pmc_mask = 1 << AT91SAM9261_ID_PIOC,
51 .type = CLK_TYPE_PERIPHERAL,
52};
53static struct clk usart0_clk = {
54 .name = "usart0_clk",
55 .pmc_mask = 1 << AT91SAM9261_ID_US0,
56 .type = CLK_TYPE_PERIPHERAL,
57};
58static struct clk usart1_clk = {
59 .name = "usart1_clk",
60 .pmc_mask = 1 << AT91SAM9261_ID_US1,
61 .type = CLK_TYPE_PERIPHERAL,
62};
63static struct clk usart2_clk = {
64 .name = "usart2_clk",
65 .pmc_mask = 1 << AT91SAM9261_ID_US2,
66 .type = CLK_TYPE_PERIPHERAL,
67};
68static struct clk mmc_clk = {
69 .name = "mci_clk",
70 .pmc_mask = 1 << AT91SAM9261_ID_MCI,
71 .type = CLK_TYPE_PERIPHERAL,
72};
73static struct clk udc_clk = {
74 .name = "udc_clk",
75 .pmc_mask = 1 << AT91SAM9261_ID_UDP,
76 .type = CLK_TYPE_PERIPHERAL,
77};
78static struct clk twi_clk = {
79 .name = "twi_clk",
80 .pmc_mask = 1 << AT91SAM9261_ID_TWI,
81 .type = CLK_TYPE_PERIPHERAL,
82};
83static struct clk spi0_clk = {
84 .name = "spi0_clk",
85 .pmc_mask = 1 << AT91SAM9261_ID_SPI0,
86 .type = CLK_TYPE_PERIPHERAL,
87};
88static struct clk spi1_clk = {
89 .name = "spi1_clk",
90 .pmc_mask = 1 << AT91SAM9261_ID_SPI1,
91 .type = CLK_TYPE_PERIPHERAL,
92};
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93static struct clk ssc0_clk = {
94 .name = "ssc0_clk",
95 .pmc_mask = 1 << AT91SAM9261_ID_SSC0,
96 .type = CLK_TYPE_PERIPHERAL,
97};
98static struct clk ssc1_clk = {
99 .name = "ssc1_clk",
100 .pmc_mask = 1 << AT91SAM9261_ID_SSC1,
101 .type = CLK_TYPE_PERIPHERAL,
102};
103static struct clk ssc2_clk = {
104 .name = "ssc2_clk",
105 .pmc_mask = 1 << AT91SAM9261_ID_SSC2,
106 .type = CLK_TYPE_PERIPHERAL,
107};
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108static struct clk tc0_clk = {
109 .name = "tc0_clk",
110 .pmc_mask = 1 << AT91SAM9261_ID_TC0,
111 .type = CLK_TYPE_PERIPHERAL,
112};
113static struct clk tc1_clk = {
114 .name = "tc1_clk",
115 .pmc_mask = 1 << AT91SAM9261_ID_TC1,
116 .type = CLK_TYPE_PERIPHERAL,
117};
118static struct clk tc2_clk = {
119 .name = "tc2_clk",
120 .pmc_mask = 1 << AT91SAM9261_ID_TC2,
121 .type = CLK_TYPE_PERIPHERAL,
122};
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123static struct clk ohci_clk = {
124 .name = "ohci_clk",
125 .pmc_mask = 1 << AT91SAM9261_ID_UHP,
126 .type = CLK_TYPE_PERIPHERAL,
127};
128static struct clk lcdc_clk = {
129 .name = "lcdc_clk",
130 .pmc_mask = 1 << AT91SAM9261_ID_LCDC,
131 .type = CLK_TYPE_PERIPHERAL,
132};
133
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134/* HClocks */
135static struct clk hck0 = {
136 .name = "hck0",
137 .pmc_mask = AT91_PMC_HCK0,
138 .type = CLK_TYPE_SYSTEM,
139 .id = 0,
140};
141static struct clk hck1 = {
142 .name = "hck1",
143 .pmc_mask = AT91_PMC_HCK1,
144 .type = CLK_TYPE_SYSTEM,
145 .id = 1,
146};
147
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148static struct clk *periph_clocks[] __initdata = {
149 &pioA_clk,
150 &pioB_clk,
151 &pioC_clk,
152 &usart0_clk,
153 &usart1_clk,
154 &usart2_clk,
155 &mmc_clk,
156 &udc_clk,
157 &twi_clk,
158 &spi0_clk,
159 &spi1_clk,
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160 &ssc0_clk,
161 &ssc1_clk,
162 &ssc2_clk,
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163 &tc0_clk,
164 &tc1_clk,
165 &tc2_clk,
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166 &ohci_clk,
167 &lcdc_clk,
168 // irq0 .. irq2
169};
170
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171static struct clk_lookup periph_clocks_lookups[] = {
172 CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.0", &spi0_clk),
173 CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.1", &spi1_clk),
174 CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.0", &tc0_clk),
175 CLKDEV_CON_DEV_ID("t1_clk", "atmel_tcb.0", &tc1_clk),
c0764b2a 176 CLKDEV_CON_DEV_ID("t2_clk", "atmel_tcb.0", &tc2_clk),
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177 CLKDEV_CON_DEV_ID("pclk", "ssc.0", &ssc0_clk),
178 CLKDEV_CON_DEV_ID("pclk", "ssc.1", &ssc1_clk),
179 CLKDEV_CON_DEV_ID("pclk", "ssc.2", &ssc2_clk),
0af4316b 180 CLKDEV_CON_DEV_ID("hclk", "at91_ohci", &hck0),
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181 CLKDEV_CON_ID("pioA", &pioA_clk),
182 CLKDEV_CON_ID("pioB", &pioB_clk),
183 CLKDEV_CON_ID("pioC", &pioC_clk),
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184};
185
186static struct clk_lookup usart_clocks_lookups[] = {
187 CLKDEV_CON_DEV_ID("usart", "atmel_usart.0", &mck),
188 CLKDEV_CON_DEV_ID("usart", "atmel_usart.1", &usart0_clk),
189 CLKDEV_CON_DEV_ID("usart", "atmel_usart.2", &usart1_clk),
190 CLKDEV_CON_DEV_ID("usart", "atmel_usart.3", &usart2_clk),
191};
192
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193/*
194 * The four programmable clocks.
195 * You must configure pin multiplexing to bring these signals out.
196 */
197static struct clk pck0 = {
198 .name = "pck0",
199 .pmc_mask = AT91_PMC_PCK0,
200 .type = CLK_TYPE_PROGRAMMABLE,
201 .id = 0,
202};
203static struct clk pck1 = {
204 .name = "pck1",
205 .pmc_mask = AT91_PMC_PCK1,
206 .type = CLK_TYPE_PROGRAMMABLE,
207 .id = 1,
208};
209static struct clk pck2 = {
210 .name = "pck2",
211 .pmc_mask = AT91_PMC_PCK2,
212 .type = CLK_TYPE_PROGRAMMABLE,
213 .id = 2,
214};
215static struct clk pck3 = {
216 .name = "pck3",
217 .pmc_mask = AT91_PMC_PCK3,
218 .type = CLK_TYPE_PROGRAMMABLE,
219 .id = 3,
220};
221
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222static void __init at91sam9261_register_clocks(void)
223{
224 int i;
225
226 for (i = 0; i < ARRAY_SIZE(periph_clocks); i++)
227 clk_register(periph_clocks[i]);
228
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229 clkdev_add_table(periph_clocks_lookups,
230 ARRAY_SIZE(periph_clocks_lookups));
231 clkdev_add_table(usart_clocks_lookups,
232 ARRAY_SIZE(usart_clocks_lookups));
233
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234 clk_register(&pck0);
235 clk_register(&pck1);
236 clk_register(&pck2);
237 clk_register(&pck3);
238
239 clk_register(&hck0);
240 clk_register(&hck1);
241}
242
243/* --------------------------------------------------------------------
244 * GPIO
245 * -------------------------------------------------------------------- */
246
1a2d9156 247static struct at91_gpio_bank at91sam9261_gpio[] __initdata = {
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248 {
249 .id = AT91SAM9261_ID_PIOA,
80e91cb8 250 .regbase = AT91SAM9261_BASE_PIOA,
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251 }, {
252 .id = AT91SAM9261_ID_PIOB,
80e91cb8 253 .regbase = AT91SAM9261_BASE_PIOB,
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254 }, {
255 .id = AT91SAM9261_ID_PIOC,
80e91cb8 256 .regbase = AT91SAM9261_BASE_PIOC,
62c1660d
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257 }
258};
259
62c1660d
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260/* --------------------------------------------------------------------
261 * AT91SAM9261 processor initialization
262 * -------------------------------------------------------------------- */
263
21d08b9d 264static void __init at91sam9261_map_io(void)
62c1660d 265{
b319ff80 266 if (cpu_is_at91sam9g10())
f0051d82 267 at91_init_sram(0, AT91SAM9G10_SRAM_BASE, AT91SAM9G10_SRAM_SIZE);
b319ff80 268 else
f0051d82 269 at91_init_sram(0, AT91SAM9261_SRAM_BASE, AT91SAM9261_SRAM_SIZE);
1b021a3b 270}
b319ff80 271
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272static void __init at91sam9261_ioremap_registers(void)
273{
f22deee5 274 at91_ioremap_shdwc(AT91SAM9261_BASE_SHDWC);
e9f68b5c 275 at91_ioremap_rstc(AT91SAM9261_BASE_RSTC);
f363c407 276 at91_ioremap_ramc(0, AT91SAM9261_BASE_SDRAMC, 512);
4ab0c599 277 at91sam926x_ioremap_pit(AT91SAM9261_BASE_PIT);
faee0cc3 278 at91sam9_ioremap_smc(0, AT91SAM9261_BASE_SMC);
4342d647 279 at91_ioremap_matrix(AT91SAM9261_BASE_MATRIX);
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280}
281
46539374 282static void __init at91sam9261_initialize(void)
1b021a3b 283{
0d781716 284 arm_pm_idle = at91sam9_idle;
1b2073e7 285 arm_pm_restart = at91sam9_alt_restart;
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286 at91_extern_irq = (1 << AT91SAM9261_ID_IRQ0) | (1 << AT91SAM9261_ID_IRQ1)
287 | (1 << AT91SAM9261_ID_IRQ2);
288
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289 /* Register GPIO subsystem */
290 at91_gpio_init(at91sam9261_gpio, 3);
291}
292
293/* --------------------------------------------------------------------
294 * Interrupt initialization
295 * -------------------------------------------------------------------- */
296
297/*
298 * The default interrupt priority levels (0 = lowest, 7 = highest).
299 */
300static unsigned int at91sam9261_default_irq_priority[NR_AIC_IRQS] __initdata = {
301 7, /* Advanced Interrupt Controller */
302 7, /* System Peripherals */
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AV
303 1, /* Parallel IO Controller A */
304 1, /* Parallel IO Controller B */
305 1, /* Parallel IO Controller C */
62c1660d 306 0,
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307 5, /* USART 0 */
308 5, /* USART 1 */
309 5, /* USART 2 */
62c1660d 310 0, /* Multimedia Card Interface */
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311 2, /* USB Device Port */
312 6, /* Two-Wire Interface */
313 5, /* Serial Peripheral Interface 0 */
314 5, /* Serial Peripheral Interface 1 */
315 4, /* Serial Synchronous Controller 0 */
316 4, /* Serial Synchronous Controller 1 */
317 4, /* Serial Synchronous Controller 2 */
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318 0, /* Timer Counter 0 */
319 0, /* Timer Counter 1 */
320 0, /* Timer Counter 2 */
7cbed2b5 321 2, /* USB Host port */
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322 3, /* LCD Controller */
323 0,
324 0,
325 0,
326 0,
327 0,
328 0,
329 0,
330 0, /* Advanced Interrupt Controller */
331 0, /* Advanced Interrupt Controller */
332 0, /* Advanced Interrupt Controller */
333};
334
8c3583b6 335struct at91_init_soc __initdata at91sam9261_soc = {
21d08b9d 336 .map_io = at91sam9261_map_io,
92100c12 337 .default_irq_priority = at91sam9261_default_irq_priority,
cfa5a1fe 338 .ioremap_registers = at91sam9261_ioremap_registers,
51ddec76 339 .register_clocks = at91sam9261_register_clocks,
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340 .init = at91sam9261_initialize,
341};
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