Merge branch 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-2.6
[linux-2.6] / arch / arm / mach-at91 / at91sam9263.c
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
24 static 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  */
50 static struct clk pioA_clk = {
51         .name           = "pioA_clk",
52         .pmc_mask       = 1 << AT91SAM9263_ID_PIOA,
53         .type           = CLK_TYPE_PERIPHERAL,
54 };
55 static struct clk pioB_clk = {
56         .name           = "pioB_clk",
57         .pmc_mask       = 1 << AT91SAM9263_ID_PIOB,
58         .type           = CLK_TYPE_PERIPHERAL,
59 };
60 static struct clk pioCDE_clk = {
61         .name           = "pioCDE_clk",
62         .pmc_mask       = 1 << AT91SAM9263_ID_PIOCDE,
63         .type           = CLK_TYPE_PERIPHERAL,
64 };
65 static struct clk usart0_clk = {
66         .name           = "usart0_clk",
67         .pmc_mask       = 1 << AT91SAM9263_ID_US0,
68         .type           = CLK_TYPE_PERIPHERAL,
69 };
70 static struct clk usart1_clk = {
71         .name           = "usart1_clk",
72         .pmc_mask       = 1 << AT91SAM9263_ID_US1,
73         .type           = CLK_TYPE_PERIPHERAL,
74 };
75 static struct clk usart2_clk = {
76         .name           = "usart2_clk",
77         .pmc_mask       = 1 << AT91SAM9263_ID_US2,
78         .type           = CLK_TYPE_PERIPHERAL,
79 };
80 static struct clk mmc0_clk = {
81         .name           = "mci0_clk",
82         .pmc_mask       = 1 << AT91SAM9263_ID_MCI0,
83         .type           = CLK_TYPE_PERIPHERAL,
84 };
85 static struct clk mmc1_clk = {
86         .name           = "mci1_clk",
87         .pmc_mask       = 1 << AT91SAM9263_ID_MCI1,
88         .type           = CLK_TYPE_PERIPHERAL,
89 };
90 static struct clk can_clk = {
91         .name           = "can_clk",
92         .pmc_mask       = 1 << AT91SAM9263_ID_CAN,
93         .type           = CLK_TYPE_PERIPHERAL,
94 };
95 static struct clk twi_clk = {
96         .name           = "twi_clk",
97         .pmc_mask       = 1 << AT91SAM9263_ID_TWI,
98         .type           = CLK_TYPE_PERIPHERAL,
99 };
100 static struct clk spi0_clk = {
101         .name           = "spi0_clk",
102         .pmc_mask       = 1 << AT91SAM9263_ID_SPI0,
103         .type           = CLK_TYPE_PERIPHERAL,
104 };
105 static struct clk spi1_clk = {
106         .name           = "spi1_clk",
107         .pmc_mask       = 1 << AT91SAM9263_ID_SPI1,
108         .type           = CLK_TYPE_PERIPHERAL,
109 };
110 static struct clk ssc0_clk = {
111         .name           = "ssc0_clk",
112         .pmc_mask       = 1 << AT91SAM9263_ID_SSC0,
113         .type           = CLK_TYPE_PERIPHERAL,
114 };
115 static struct clk ssc1_clk = {
116         .name           = "ssc1_clk",
117         .pmc_mask       = 1 << AT91SAM9263_ID_SSC1,
118         .type           = CLK_TYPE_PERIPHERAL,
119 };
120 static struct clk ac97_clk = {
121         .name           = "ac97_clk",
122         .pmc_mask       = 1 << AT91SAM9263_ID_AC97C,
123         .type           = CLK_TYPE_PERIPHERAL,
124 };
125 static struct clk tcb_clk = {
126         .name           = "tcb_clk",
127         .pmc_mask       = 1 << AT91SAM9263_ID_TCB,
128         .type           = CLK_TYPE_PERIPHERAL,
129 };
130 static struct clk pwmc_clk = {
131         .name           = "pwmc_clk",
132         .pmc_mask       = 1 << AT91SAM9263_ID_PWMC,
133         .type           = CLK_TYPE_PERIPHERAL,
134 };
135 static struct clk macb_clk = {
136         .name           = "macb_clk",
137         .pmc_mask       = 1 << AT91SAM9263_ID_EMAC,
138         .type           = CLK_TYPE_PERIPHERAL,
139 };
140 static struct clk dma_clk = {
141         .name           = "dma_clk",
142         .pmc_mask       = 1 << AT91SAM9263_ID_DMA,
143         .type           = CLK_TYPE_PERIPHERAL,
144 };
145 static struct clk twodge_clk = {
146         .name           = "2dge_clk",
147         .pmc_mask       = 1 << AT91SAM9263_ID_2DGE,
148         .type           = CLK_TYPE_PERIPHERAL,
149 };
150 static struct clk udc_clk = {
151         .name           = "udc_clk",
152         .pmc_mask       = 1 << AT91SAM9263_ID_UDP,
153         .type           = CLK_TYPE_PERIPHERAL,
154 };
155 static struct clk isi_clk = {
156         .name           = "isi_clk",
157         .pmc_mask       = 1 << AT91SAM9263_ID_ISI,
158         .type           = CLK_TYPE_PERIPHERAL,
159 };
160 static struct clk lcdc_clk = {
161         .name           = "lcdc_clk",
162         .pmc_mask       = 1 << AT91SAM9263_ID_LCDC,
163         .type           = CLK_TYPE_PERIPHERAL,
164 };
165 static struct clk ohci_clk = {
166         .name           = "ohci_clk",
167         .pmc_mask       = 1 << AT91SAM9263_ID_UHP,
168         .type           = CLK_TYPE_PERIPHERAL,
169 };
170
171 static struct clk *periph_clocks[] __initdata = {
172         &pioA_clk,
173         &pioB_clk,
174         &pioCDE_clk,
175         &usart0_clk,
176         &usart1_clk,
177         &usart2_clk,
178         &mmc0_clk,
179         &mmc1_clk,
180         &can_clk,
181         &twi_clk,
182         &spi0_clk,
183         &spi1_clk,
184         &ssc0_clk,
185         &ssc1_clk,
186         &ac97_clk,
187         &tcb_clk,
188         &pwmc_clk,
189         &macb_clk,
190         &twodge_clk,
191         &udc_clk,
192         &isi_clk,
193         &lcdc_clk,
194         &dma_clk,
195         &ohci_clk,
196         // irq0 .. irq1
197 };
198
199 /*
200  * The four programmable clocks.
201  * You must configure pin multiplexing to bring these signals out.
202  */
203 static struct clk pck0 = {
204         .name           = "pck0",
205         .pmc_mask       = AT91_PMC_PCK0,
206         .type           = CLK_TYPE_PROGRAMMABLE,
207         .id             = 0,
208 };
209 static struct clk pck1 = {
210         .name           = "pck1",
211         .pmc_mask       = AT91_PMC_PCK1,
212         .type           = CLK_TYPE_PROGRAMMABLE,
213         .id             = 1,
214 };
215 static struct clk pck2 = {
216         .name           = "pck2",
217         .pmc_mask       = AT91_PMC_PCK2,
218         .type           = CLK_TYPE_PROGRAMMABLE,
219         .id             = 2,
220 };
221 static struct clk pck3 = {
222         .name           = "pck3",
223         .pmc_mask       = AT91_PMC_PCK3,
224         .type           = CLK_TYPE_PROGRAMMABLE,
225         .id             = 3,
226 };
227
228 static void __init at91sam9263_register_clocks(void)
229 {
230         int i;
231
232         for (i = 0; i < ARRAY_SIZE(periph_clocks); i++)
233                 clk_register(periph_clocks[i]);
234
235         clk_register(&pck0);
236         clk_register(&pck1);
237         clk_register(&pck2);
238         clk_register(&pck3);
239 }
240
241 /* --------------------------------------------------------------------
242  *  GPIO
243  * -------------------------------------------------------------------- */
244
245 static struct at91_gpio_bank at91sam9263_gpio[] = {
246         {
247                 .id             = AT91SAM9263_ID_PIOA,
248                 .offset         = AT91_PIOA,
249                 .clock          = &pioA_clk,
250         }, {
251                 .id             = AT91SAM9263_ID_PIOB,
252                 .offset         = AT91_PIOB,
253                 .clock          = &pioB_clk,
254         }, {
255                 .id             = AT91SAM9263_ID_PIOCDE,
256                 .offset         = AT91_PIOC,
257                 .clock          = &pioCDE_clk,
258         }, {
259                 .id             = AT91SAM9263_ID_PIOCDE,
260                 .offset         = AT91_PIOD,
261                 .clock          = &pioCDE_clk,
262         }, {
263                 .id             = AT91SAM9263_ID_PIOCDE,
264                 .offset         = AT91_PIOE,
265                 .clock          = &pioCDE_clk,
266         }
267 };
268
269 static void at91sam9263_reset(void)
270 {
271         at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_PROCRST | AT91_RSTC_PERRST);
272 }
273
274
275 /* --------------------------------------------------------------------
276  *  AT91SAM9263 processor initialization
277  * -------------------------------------------------------------------- */
278
279 void __init at91sam9263_initialize(unsigned long main_clock)
280 {
281         /* Map peripherals */
282         iotable_init(at91sam9263_io_desc, ARRAY_SIZE(at91sam9263_io_desc));
283
284         at91_arch_reset = at91sam9263_reset;
285         at91_extern_irq = (1 << AT91SAM9263_ID_IRQ0) | (1 << AT91SAM9263_ID_IRQ1);
286
287         /* Init clock subsystem */
288         at91_clock_init(main_clock);
289
290         /* Register the processor-specific clocks */
291         at91sam9263_register_clocks();
292
293         /* Register GPIO subsystem */
294         at91_gpio_init(at91sam9263_gpio, 5);
295 }
296
297 /* --------------------------------------------------------------------
298  *  Interrupt initialization
299  * -------------------------------------------------------------------- */
300
301 /*
302  * The default interrupt priority levels (0 = lowest, 7 = highest).
303  */
304 static unsigned int at91sam9263_default_irq_priority[NR_AIC_IRQS] __initdata = {
305         7,      /* Advanced Interrupt Controller (FIQ) */
306         7,      /* System Peripherals */
307         0,      /* Parallel IO Controller A */
308         0,      /* Parallel IO Controller B */
309         0,      /* Parallel IO Controller C, D and E */
310         0,
311         0,
312         6,      /* USART 0 */
313         6,      /* USART 1 */
314         6,      /* USART 2 */
315         0,      /* Multimedia Card Interface 0 */
316         0,      /* Multimedia Card Interface 1 */
317         4,      /* CAN */
318         0,      /* Two-Wire Interface */
319         6,      /* Serial Peripheral Interface 0 */
320         6,      /* Serial Peripheral Interface 1 */
321         5,      /* Serial Synchronous Controller 0 */
322         5,      /* Serial Synchronous Controller 1 */
323         6,      /* AC97 Controller */
324         0,      /* Timer Counter 0, 1 and 2 */
325         0,      /* Pulse Width Modulation Controller */
326         3,      /* Ethernet */
327         0,
328         0,      /* 2D Graphic Engine */
329         3,      /* USB Device Port */
330         0,      /* Image Sensor Interface */
331         3,      /* LDC Controller */
332         0,      /* DMA Controller */
333         0,
334         3,      /* USB Host port */
335         0,      /* Advanced Interrupt Controller (IRQ0) */
336         0,      /* Advanced Interrupt Controller (IRQ1) */
337 };
338
339 void __init at91sam9263_init_interrupts(unsigned int priority[NR_AIC_IRQS])
340 {
341         if (!priority)
342                 priority = at91sam9263_default_irq_priority;
343
344         /* Initialize the AIC interrupt controller */
345         at91_aic_init(priority);
346
347         /* Enable GPIO interrupts */
348         at91_gpio_irq_setup();
349 }