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-rw-r--r--arch/arm/mach-at91/at91sam9263.c313
1 files changed, 313 insertions, 0 deletions
diff --git a/arch/arm/mach-at91/at91sam9263.c b/arch/arm/mach-at91/at91sam9263.c
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index 000000000000..6aa342e8f1b1
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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>
14
15#include <asm/mach/arch.h>
16#include <asm/mach/map.h>
17#include <asm/arch/at91sam9263.h>
18#include <asm/arch/at91_pmc.h>
19#include <asm/arch/at91_rstc.h>
20
21#include "generic.h"
22#include "clock.h"
23
24static struct map_desc at91sam9263_io_desc[] __initdata = {
25 {
26 .virtual = AT91_VA_BASE_SYS,
27 .pfn = __phys_to_pfn(AT91_BASE_SYS),
28 .length = SZ_16K,
29 .type = MT_DEVICE,
30 }, {
31 .virtual = AT91_IO_VIRT_BASE - AT91SAM9263_SRAM0_SIZE,
32 .pfn = __phys_to_pfn(AT91SAM9263_SRAM0_BASE),
33 .length = AT91SAM9263_SRAM0_SIZE,
34 .type = MT_DEVICE,
35 }, {
36 .virtual = AT91_IO_VIRT_BASE - AT91SAM9263_SRAM0_SIZE - AT91SAM9263_SRAM1_SIZE,
37 .pfn = __phys_to_pfn(AT91SAM9263_SRAM1_BASE),
38 .length = AT91SAM9263_SRAM1_SIZE,
39 .type = MT_DEVICE,
40 },
41};
42
43/* --------------------------------------------------------------------
44 * Clocks
45 * -------------------------------------------------------------------- */
46
47/*
48 * The peripheral clocks.
49 */
50static struct clk pioA_clk = {
51 .name = "pioA_clk",
52 .pmc_mask = 1 << AT91SAM9263_ID_PIOA,
53 .type = CLK_TYPE_PERIPHERAL,
54};
55static struct clk pioB_clk = {
56 .name = "pioB_clk",
57 .pmc_mask = 1 << AT91SAM9263_ID_PIOB,
58 .type = CLK_TYPE_PERIPHERAL,
59};
60static struct clk pioCDE_clk = {
61 .name = "pioCDE_clk",
62 .pmc_mask = 1 << AT91SAM9263_ID_PIOCDE,
63 .type = CLK_TYPE_PERIPHERAL,
64};
65static struct clk usart0_clk = {
66 .name = "usart0_clk",
67 .pmc_mask = 1 << AT91SAM9263_ID_US0,
68 .type = CLK_TYPE_PERIPHERAL,
69};
70static struct clk usart1_clk = {
71 .name = "usart1_clk",
72 .pmc_mask = 1 << AT91SAM9263_ID_US1,
73 .type = CLK_TYPE_PERIPHERAL,
74};
75static struct clk usart2_clk = {
76 .name = "usart2_clk",
77 .pmc_mask = 1 << AT91SAM9263_ID_US2,
78 .type = CLK_TYPE_PERIPHERAL,
79};
80static struct clk mmc0_clk = {
81 .name = "mci0_clk",
82 .pmc_mask = 1 << AT91SAM9263_ID_MCI0,
83 .type = CLK_TYPE_PERIPHERAL,
84};
85static struct clk mmc1_clk = {
86 .name = "mci1_clk",
87 .pmc_mask = 1 << AT91SAM9263_ID_MCI1,
88 .type = CLK_TYPE_PERIPHERAL,
89};
90static struct clk twi_clk = {
91 .name = "twi_clk",
92 .pmc_mask = 1 << AT91SAM9263_ID_TWI,
93 .type = CLK_TYPE_PERIPHERAL,
94};
95static struct clk spi0_clk = {
96 .name = "spi0_clk",
97 .pmc_mask = 1 << AT91SAM9263_ID_SPI0,
98 .type = CLK_TYPE_PERIPHERAL,
99};
100static struct clk spi1_clk = {
101 .name = "spi1_clk",
102 .pmc_mask = 1 << AT91SAM9263_ID_SPI1,
103 .type = CLK_TYPE_PERIPHERAL,
104};
105static struct clk tcb_clk = {
106 .name = "tcb_clk",
107 .pmc_mask = 1 << AT91SAM9263_ID_TCB,
108 .type = CLK_TYPE_PERIPHERAL,
109};
110static struct clk macb_clk = {
111 .name = "macb_clk",
112 .pmc_mask = 1 << AT91SAM9263_ID_EMAC,
113 .type = CLK_TYPE_PERIPHERAL,
114};
115static struct clk udc_clk = {
116 .name = "udc_clk",
117 .pmc_mask = 1 << AT91SAM9263_ID_UDP,
118 .type = CLK_TYPE_PERIPHERAL,
119};
120static struct clk isi_clk = {
121 .name = "isi_clk",
122 .pmc_mask = 1 << AT91SAM9263_ID_ISI,
123 .type = CLK_TYPE_PERIPHERAL,
124};
125static struct clk lcdc_clk = {
126 .name = "lcdc_clk",
127 .pmc_mask = 1 << AT91SAM9263_ID_ISI,
128 .type = CLK_TYPE_PERIPHERAL,
129};
130static struct clk ohci_clk = {
131 .name = "ohci_clk",
132 .pmc_mask = 1 << AT91SAM9263_ID_UHP,
133 .type = CLK_TYPE_PERIPHERAL,
134};
135
136static struct clk *periph_clocks[] __initdata = {
137 &pioA_clk,
138 &pioB_clk,
139 &pioCDE_clk,
140 &usart0_clk,
141 &usart1_clk,
142 &usart2_clk,
143 &mmc0_clk,
144 &mmc1_clk,
145 // can
146 &twi_clk,
147 &spi0_clk,
148 &spi1_clk,
149 // ssc0 .. ssc1
150 // ac97
151 &tcb_clk,
152 // pwmc
153 &macb_clk,
154 // 2dge
155 &udc_clk,
156 &isi_clk,
157 &lcdc_clk,
158 // dma
159 &ohci_clk,
160 // irq0 .. irq1
161};
162
163/*
164 * The four programmable clocks.
165 * You must configure pin multiplexing to bring these signals out.
166 */
167static struct clk pck0 = {
168 .name = "pck0",
169 .pmc_mask = AT91_PMC_PCK0,
170 .type = CLK_TYPE_PROGRAMMABLE,
171 .id = 0,
172};
173static struct clk pck1 = {
174 .name = "pck1",
175 .pmc_mask = AT91_PMC_PCK1,
176 .type = CLK_TYPE_PROGRAMMABLE,
177 .id = 1,
178};
179static struct clk pck2 = {
180 .name = "pck2",
181 .pmc_mask = AT91_PMC_PCK2,
182 .type = CLK_TYPE_PROGRAMMABLE,
183 .id = 2,
184};
185static struct clk pck3 = {
186 .name = "pck3",
187 .pmc_mask = AT91_PMC_PCK3,
188 .type = CLK_TYPE_PROGRAMMABLE,
189 .id = 3,
190};
191
192static void __init at91sam9263_register_clocks(void)
193{
194 int i;
195
196 for (i = 0; i < ARRAY_SIZE(periph_clocks); i++)
197 clk_register(periph_clocks[i]);
198
199 clk_register(&pck0);
200 clk_register(&pck1);
201 clk_register(&pck2);
202 clk_register(&pck3);
203}
204
205/* --------------------------------------------------------------------
206 * GPIO
207 * -------------------------------------------------------------------- */
208
209static struct at91_gpio_bank at91sam9263_gpio[] = {
210 {
211 .id = AT91SAM9263_ID_PIOA,
212 .offset = AT91_PIOA,
213 .clock = &pioA_clk,
214 }, {
215 .id = AT91SAM9263_ID_PIOB,
216 .offset = AT91_PIOB,
217 .clock = &pioB_clk,
218 }, {
219 .id = AT91SAM9263_ID_PIOCDE,
220 .offset = AT91_PIOC,
221 .clock = &pioCDE_clk,
222 }, {
223 .id = AT91SAM9263_ID_PIOCDE,
224 .offset = AT91_PIOD,
225 .clock = &pioCDE_clk,
226 }, {
227 .id = AT91SAM9263_ID_PIOCDE,
228 .offset = AT91_PIOE,
229 .clock = &pioCDE_clk,
230 }
231};
232
233static void at91sam9263_reset(void)
234{
235 at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_PROCRST | AT91_RSTC_PERRST);
236}
237
238
239/* --------------------------------------------------------------------
240 * AT91SAM9263 processor initialization
241 * -------------------------------------------------------------------- */
242
243void __init at91sam9263_initialize(unsigned long main_clock)
244{
245 /* Map peripherals */
246 iotable_init(at91sam9263_io_desc, ARRAY_SIZE(at91sam9263_io_desc));
247
248 at91_arch_reset = at91sam9263_reset;
249 at91_extern_irq = (1 << AT91SAM9263_ID_IRQ0) | (1 << AT91SAM9263_ID_IRQ1);
250
251 /* Init clock subsystem */
252 at91_clock_init(main_clock);
253
254 /* Register the processor-specific clocks */
255 at91sam9263_register_clocks();
256
257 /* Register GPIO subsystem */
258 at91_gpio_init(at91sam9263_gpio, 5);
259}
260
261/* --------------------------------------------------------------------
262 * Interrupt initialization
263 * -------------------------------------------------------------------- */
264
265/*
266 * The default interrupt priority levels (0 = lowest, 7 = highest).
267 */
268static unsigned int at91sam9263_default_irq_priority[NR_AIC_IRQS] __initdata = {
269 7, /* Advanced Interrupt Controller (FIQ) */
270 7, /* System Peripherals */
271 0, /* Parallel IO Controller A */
272 0, /* Parallel IO Controller B */
273 0, /* Parallel IO Controller C, D and E */
274 0,
275 0,
276 6, /* USART 0 */
277 6, /* USART 1 */
278 6, /* USART 2 */
279 0, /* Multimedia Card Interface 0 */
280 0, /* Multimedia Card Interface 1 */
281 4, /* CAN */
282 0, /* Two-Wire Interface */
283 6, /* Serial Peripheral Interface 0 */
284 6, /* Serial Peripheral Interface 1 */
285 5, /* Serial Synchronous Controller 0 */
286 5, /* Serial Synchronous Controller 1 */
287 6, /* AC97 Controller */
288 0, /* Timer Counter 0, 1 and 2 */
289 0, /* Pulse Width Modulation Controller */
290 3, /* Ethernet */
291 0,
292 0, /* 2D Graphic Engine */
293 3, /* USB Device Port */
294 0, /* Image Sensor Interface */
295 3, /* LDC Controller */
296 0, /* DMA Controller */
297 0,
298 3, /* USB Host port */
299 0, /* Advanced Interrupt Controller (IRQ0) */
300 0, /* Advanced Interrupt Controller (IRQ1) */
301};
302
303void __init at91sam9263_init_interrupts(unsigned int priority[NR_AIC_IRQS])
304{
305 if (!priority)
306 priority = at91sam9263_default_irq_priority;
307
308 /* Initialize the AIC interrupt controller */
309 at91_aic_init(priority);
310
311 /* Enable GPIO interrupts */
312 at91_gpio_irq_setup();
313}
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