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[mirror_ubuntu-artful-kernel.git] / arch / arm / mach-at91 / at91sam9263.c
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1/*
2 * arch/arm/mach-at91/at91sam9263.c
3 *
4 * Copyright (C) 2007 Atmel Corporation.
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>
3ef2fb42 14#include <linux/pm.h>
b2c65616 15
80b02c17 16#include <asm/irq.h>
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17#include <asm/mach/arch.h>
18#include <asm/mach/map.h>
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19#include <mach/at91sam9263.h>
20#include <mach/at91_pmc.h>
21#include <mach/at91_rstc.h>
22#include <mach/at91_shdwc.h>
b2c65616 23
21d08b9d 24#include "soc.h"
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25#include "generic.h"
26#include "clock.h"
27
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28/* --------------------------------------------------------------------
29 * Clocks
30 * -------------------------------------------------------------------- */
31
32/*
33 * The peripheral clocks.
34 */
35static struct clk pioA_clk = {
36 .name = "pioA_clk",
37 .pmc_mask = 1 << AT91SAM9263_ID_PIOA,
38 .type = CLK_TYPE_PERIPHERAL,
39};
40static struct clk pioB_clk = {
41 .name = "pioB_clk",
42 .pmc_mask = 1 << AT91SAM9263_ID_PIOB,
43 .type = CLK_TYPE_PERIPHERAL,
44};
45static struct clk pioCDE_clk = {
46 .name = "pioCDE_clk",
47 .pmc_mask = 1 << AT91SAM9263_ID_PIOCDE,
48 .type = CLK_TYPE_PERIPHERAL,
49};
50static struct clk usart0_clk = {
51 .name = "usart0_clk",
52 .pmc_mask = 1 << AT91SAM9263_ID_US0,
53 .type = CLK_TYPE_PERIPHERAL,
54};
55static struct clk usart1_clk = {
56 .name = "usart1_clk",
57 .pmc_mask = 1 << AT91SAM9263_ID_US1,
58 .type = CLK_TYPE_PERIPHERAL,
59};
60static struct clk usart2_clk = {
61 .name = "usart2_clk",
62 .pmc_mask = 1 << AT91SAM9263_ID_US2,
63 .type = CLK_TYPE_PERIPHERAL,
64};
65static struct clk mmc0_clk = {
66 .name = "mci0_clk",
67 .pmc_mask = 1 << AT91SAM9263_ID_MCI0,
68 .type = CLK_TYPE_PERIPHERAL,
69};
70static struct clk mmc1_clk = {
71 .name = "mci1_clk",
72 .pmc_mask = 1 << AT91SAM9263_ID_MCI1,
73 .type = CLK_TYPE_PERIPHERAL,
74};
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75static struct clk can_clk = {
76 .name = "can_clk",
77 .pmc_mask = 1 << AT91SAM9263_ID_CAN,
78 .type = CLK_TYPE_PERIPHERAL,
79};
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80static struct clk twi_clk = {
81 .name = "twi_clk",
82 .pmc_mask = 1 << AT91SAM9263_ID_TWI,
83 .type = CLK_TYPE_PERIPHERAL,
84};
85static struct clk spi0_clk = {
86 .name = "spi0_clk",
87 .pmc_mask = 1 << AT91SAM9263_ID_SPI0,
88 .type = CLK_TYPE_PERIPHERAL,
89};
90static struct clk spi1_clk = {
91 .name = "spi1_clk",
92 .pmc_mask = 1 << AT91SAM9263_ID_SPI1,
93 .type = CLK_TYPE_PERIPHERAL,
94};
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95static struct clk ssc0_clk = {
96 .name = "ssc0_clk",
97 .pmc_mask = 1 << AT91SAM9263_ID_SSC0,
98 .type = CLK_TYPE_PERIPHERAL,
99};
100static struct clk ssc1_clk = {
101 .name = "ssc1_clk",
102 .pmc_mask = 1 << AT91SAM9263_ID_SSC1,
103 .type = CLK_TYPE_PERIPHERAL,
104};
105static struct clk ac97_clk = {
106 .name = "ac97_clk",
107 .pmc_mask = 1 << AT91SAM9263_ID_AC97C,
108 .type = CLK_TYPE_PERIPHERAL,
109};
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110static struct clk tcb_clk = {
111 .name = "tcb_clk",
112 .pmc_mask = 1 << AT91SAM9263_ID_TCB,
113 .type = CLK_TYPE_PERIPHERAL,
114};
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115static struct clk pwm_clk = {
116 .name = "pwm_clk",
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117 .pmc_mask = 1 << AT91SAM9263_ID_PWMC,
118 .type = CLK_TYPE_PERIPHERAL,
119};
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120static struct clk macb_clk = {
121 .name = "macb_clk",
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122 .pmc_mask = 1 << AT91SAM9263_ID_EMAC,
123 .type = CLK_TYPE_PERIPHERAL,
124};
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125static struct clk dma_clk = {
126 .name = "dma_clk",
127 .pmc_mask = 1 << AT91SAM9263_ID_DMA,
128 .type = CLK_TYPE_PERIPHERAL,
129};
130static struct clk twodge_clk = {
131 .name = "2dge_clk",
132 .pmc_mask = 1 << AT91SAM9263_ID_2DGE,
133 .type = CLK_TYPE_PERIPHERAL,
134};
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135static struct clk udc_clk = {
136 .name = "udc_clk",
137 .pmc_mask = 1 << AT91SAM9263_ID_UDP,
138 .type = CLK_TYPE_PERIPHERAL,
139};
140static struct clk isi_clk = {
141 .name = "isi_clk",
142 .pmc_mask = 1 << AT91SAM9263_ID_ISI,
143 .type = CLK_TYPE_PERIPHERAL,
144};
145static struct clk lcdc_clk = {
146 .name = "lcdc_clk",
7f6e2d99 147 .pmc_mask = 1 << AT91SAM9263_ID_LCDC,
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148 .type = CLK_TYPE_PERIPHERAL,
149};
150static struct clk ohci_clk = {
151 .name = "ohci_clk",
152 .pmc_mask = 1 << AT91SAM9263_ID_UHP,
153 .type = CLK_TYPE_PERIPHERAL,
154};
155
156static struct clk *periph_clocks[] __initdata = {
157 &pioA_clk,
158 &pioB_clk,
159 &pioCDE_clk,
160 &usart0_clk,
161 &usart1_clk,
162 &usart2_clk,
163 &mmc0_clk,
164 &mmc1_clk,
e8788bab 165 &can_clk,
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166 &twi_clk,
167 &spi0_clk,
168 &spi1_clk,
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169 &ssc0_clk,
170 &ssc1_clk,
171 &ac97_clk,
b2c65616 172 &tcb_clk,
bb1ad68b 173 &pwm_clk,
69b2e99c 174 &macb_clk,
e8788bab 175 &twodge_clk,
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176 &udc_clk,
177 &isi_clk,
178 &lcdc_clk,
e8788bab 179 &dma_clk,
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180 &ohci_clk,
181 // irq0 .. irq1
182};
183
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184static struct clk_lookup periph_clocks_lookups[] = {
185 CLKDEV_CON_DEV_ID("pclk", "ssc.0", &ssc0_clk),
186 CLKDEV_CON_DEV_ID("pclk", "ssc.1", &ssc1_clk),
187 CLKDEV_CON_DEV_ID("mci_clk", "at91_mci.0", &mmc0_clk),
188 CLKDEV_CON_DEV_ID("mci_clk", "at91_mci.1", &mmc1_clk),
189 CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.0", &spi0_clk),
190 CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.1", &spi1_clk),
191 CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.0", &tcb_clk),
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192 /* fake hclk clock */
193 CLKDEV_CON_DEV_ID("hclk", "at91_ohci", &ohci_clk),
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194};
195
196static struct clk_lookup usart_clocks_lookups[] = {
197 CLKDEV_CON_DEV_ID("usart", "atmel_usart.0", &mck),
198 CLKDEV_CON_DEV_ID("usart", "atmel_usart.1", &usart0_clk),
199 CLKDEV_CON_DEV_ID("usart", "atmel_usart.2", &usart1_clk),
200 CLKDEV_CON_DEV_ID("usart", "atmel_usart.3", &usart2_clk),
201};
202
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203/*
204 * The four programmable clocks.
205 * You must configure pin multiplexing to bring these signals out.
206 */
207static struct clk pck0 = {
208 .name = "pck0",
209 .pmc_mask = AT91_PMC_PCK0,
210 .type = CLK_TYPE_PROGRAMMABLE,
211 .id = 0,
212};
213static struct clk pck1 = {
214 .name = "pck1",
215 .pmc_mask = AT91_PMC_PCK1,
216 .type = CLK_TYPE_PROGRAMMABLE,
217 .id = 1,
218};
219static struct clk pck2 = {
220 .name = "pck2",
221 .pmc_mask = AT91_PMC_PCK2,
222 .type = CLK_TYPE_PROGRAMMABLE,
223 .id = 2,
224};
225static struct clk pck3 = {
226 .name = "pck3",
227 .pmc_mask = AT91_PMC_PCK3,
228 .type = CLK_TYPE_PROGRAMMABLE,
229 .id = 3,
230};
231
232static void __init at91sam9263_register_clocks(void)
233{
234 int i;
235
236 for (i = 0; i < ARRAY_SIZE(periph_clocks); i++)
237 clk_register(periph_clocks[i]);
238
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239 clkdev_add_table(periph_clocks_lookups,
240 ARRAY_SIZE(periph_clocks_lookups));
241 clkdev_add_table(usart_clocks_lookups,
242 ARRAY_SIZE(usart_clocks_lookups));
243
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244 clk_register(&pck0);
245 clk_register(&pck1);
246 clk_register(&pck2);
247 clk_register(&pck3);
248}
249
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250static struct clk_lookup console_clock_lookup;
251
252void __init at91sam9263_set_console_clock(int id)
253{
254 if (id >= ARRAY_SIZE(usart_clocks_lookups))
255 return;
256
257 console_clock_lookup.con_id = "usart";
258 console_clock_lookup.clk = usart_clocks_lookups[id].clk;
259 clkdev_add(&console_clock_lookup);
260}
261
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262/* --------------------------------------------------------------------
263 * GPIO
264 * -------------------------------------------------------------------- */
265
266static struct at91_gpio_bank at91sam9263_gpio[] = {
267 {
268 .id = AT91SAM9263_ID_PIOA,
269 .offset = AT91_PIOA,
270 .clock = &pioA_clk,
271 }, {
272 .id = AT91SAM9263_ID_PIOB,
273 .offset = AT91_PIOB,
274 .clock = &pioB_clk,
275 }, {
276 .id = AT91SAM9263_ID_PIOCDE,
277 .offset = AT91_PIOC,
278 .clock = &pioCDE_clk,
279 }, {
280 .id = AT91SAM9263_ID_PIOCDE,
281 .offset = AT91_PIOD,
282 .clock = &pioCDE_clk,
283 }, {
284 .id = AT91SAM9263_ID_PIOCDE,
285 .offset = AT91_PIOE,
286 .clock = &pioCDE_clk,
287 }
288};
289
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290static void at91sam9263_poweroff(void)
291{
292 at91_sys_write(AT91_SHDW_CR, AT91_SHDW_KEY | AT91_SHDW_SHDW);
293}
294
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295
296/* --------------------------------------------------------------------
297 * AT91SAM9263 processor initialization
298 * -------------------------------------------------------------------- */
299
21d08b9d 300static void __init at91sam9263_map_io(void)
b2c65616 301{
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302 at91_init_sram(0, AT91SAM9263_SRAM0_BASE, AT91SAM9263_SRAM0_SIZE);
303 at91_init_sram(1, AT91SAM9263_SRAM1_BASE, AT91SAM9263_SRAM1_SIZE);
1b021a3b 304}
b2c65616 305
46539374 306static void __init at91sam9263_initialize(void)
1b021a3b 307{
bb413db5 308 at91_arch_reset = at91sam9_alt_reset;
3ef2fb42 309 pm_power_off = at91sam9263_poweroff;
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310 at91_extern_irq = (1 << AT91SAM9263_ID_IRQ0) | (1 << AT91SAM9263_ID_IRQ1);
311
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312 /* Register GPIO subsystem */
313 at91_gpio_init(at91sam9263_gpio, 5);
314}
315
316/* --------------------------------------------------------------------
317 * Interrupt initialization
318 * -------------------------------------------------------------------- */
319
320/*
321 * The default interrupt priority levels (0 = lowest, 7 = highest).
322 */
323static unsigned int at91sam9263_default_irq_priority[NR_AIC_IRQS] __initdata = {
324 7, /* Advanced Interrupt Controller (FIQ) */
325 7, /* System Peripherals */
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326 1, /* Parallel IO Controller A */
327 1, /* Parallel IO Controller B */
328 1, /* Parallel IO Controller C, D and E */
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329 0,
330 0,
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331 5, /* USART 0 */
332 5, /* USART 1 */
333 5, /* USART 2 */
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334 0, /* Multimedia Card Interface 0 */
335 0, /* Multimedia Card Interface 1 */
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336 3, /* CAN */
337 6, /* Two-Wire Interface */
338 5, /* Serial Peripheral Interface 0 */
339 5, /* Serial Peripheral Interface 1 */
340 4, /* Serial Synchronous Controller 0 */
341 4, /* Serial Synchronous Controller 1 */
342 5, /* AC97 Controller */
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343 0, /* Timer Counter 0, 1 and 2 */
344 0, /* Pulse Width Modulation Controller */
345 3, /* Ethernet */
346 0,
347 0, /* 2D Graphic Engine */
7cbed2b5 348 2, /* USB Device Port */
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349 0, /* Image Sensor Interface */
350 3, /* LDC Controller */
351 0, /* DMA Controller */
352 0,
7cbed2b5 353 2, /* USB Host port */
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354 0, /* Advanced Interrupt Controller (IRQ0) */
355 0, /* Advanced Interrupt Controller (IRQ1) */
356};
357
8c3583b6 358struct at91_init_soc __initdata at91sam9263_soc = {
21d08b9d 359 .map_io = at91sam9263_map_io,
92100c12 360 .default_irq_priority = at91sam9263_default_irq_priority,
51ddec76 361 .register_clocks = at91sam9263_register_clocks,
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362 .init = at91sam9263_initialize,
363};