[ARM] pxa/cm-x300: use STUART for uncompressor
[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 #include <linux/pm.h>
15
16 #include <asm/irq.h>
17 #include <asm/mach/arch.h>
18 #include <asm/mach/map.h>
19 #include <mach/at91sam9263.h>
20 #include <mach/at91_pmc.h>
21 #include <mach/at91_rstc.h>
22 #include <mach/at91_shdwc.h>
23
24 #include "generic.h"
25 #include "clock.h"
26
27 static struct map_desc at91sam9263_io_desc[] __initdata = {
28         {
29                 .virtual        = AT91_VA_BASE_SYS,
30                 .pfn            = __phys_to_pfn(AT91_BASE_SYS),
31                 .length         = SZ_16K,
32                 .type           = MT_DEVICE,
33         }, {
34                 .virtual        = AT91_IO_VIRT_BASE - AT91SAM9263_SRAM0_SIZE,
35                 .pfn            = __phys_to_pfn(AT91SAM9263_SRAM0_BASE),
36                 .length         = AT91SAM9263_SRAM0_SIZE,
37                 .type           = MT_DEVICE,
38         }, {
39                 .virtual        = AT91_IO_VIRT_BASE - AT91SAM9263_SRAM0_SIZE - AT91SAM9263_SRAM1_SIZE,
40                 .pfn            = __phys_to_pfn(AT91SAM9263_SRAM1_BASE),
41                 .length         = AT91SAM9263_SRAM1_SIZE,
42                 .type           = MT_DEVICE,
43         },
44 };
45
46 /* --------------------------------------------------------------------
47  *  Clocks
48  * -------------------------------------------------------------------- */
49
50 /*
51  * The peripheral clocks.
52  */
53 static struct clk pioA_clk = {
54         .name           = "pioA_clk",
55         .pmc_mask       = 1 << AT91SAM9263_ID_PIOA,
56         .type           = CLK_TYPE_PERIPHERAL,
57 };
58 static struct clk pioB_clk = {
59         .name           = "pioB_clk",
60         .pmc_mask       = 1 << AT91SAM9263_ID_PIOB,
61         .type           = CLK_TYPE_PERIPHERAL,
62 };
63 static struct clk pioCDE_clk = {
64         .name           = "pioCDE_clk",
65         .pmc_mask       = 1 << AT91SAM9263_ID_PIOCDE,
66         .type           = CLK_TYPE_PERIPHERAL,
67 };
68 static struct clk usart0_clk = {
69         .name           = "usart0_clk",
70         .pmc_mask       = 1 << AT91SAM9263_ID_US0,
71         .type           = CLK_TYPE_PERIPHERAL,
72 };
73 static struct clk usart1_clk = {
74         .name           = "usart1_clk",
75         .pmc_mask       = 1 << AT91SAM9263_ID_US1,
76         .type           = CLK_TYPE_PERIPHERAL,
77 };
78 static struct clk usart2_clk = {
79         .name           = "usart2_clk",
80         .pmc_mask       = 1 << AT91SAM9263_ID_US2,
81         .type           = CLK_TYPE_PERIPHERAL,
82 };
83 static struct clk mmc0_clk = {
84         .name           = "mci0_clk",
85         .pmc_mask       = 1 << AT91SAM9263_ID_MCI0,
86         .type           = CLK_TYPE_PERIPHERAL,
87 };
88 static struct clk mmc1_clk = {
89         .name           = "mci1_clk",
90         .pmc_mask       = 1 << AT91SAM9263_ID_MCI1,
91         .type           = CLK_TYPE_PERIPHERAL,
92 };
93 static struct clk can_clk = {
94         .name           = "can_clk",
95         .pmc_mask       = 1 << AT91SAM9263_ID_CAN,
96         .type           = CLK_TYPE_PERIPHERAL,
97 };
98 static struct clk twi_clk = {
99         .name           = "twi_clk",
100         .pmc_mask       = 1 << AT91SAM9263_ID_TWI,
101         .type           = CLK_TYPE_PERIPHERAL,
102 };
103 static struct clk spi0_clk = {
104         .name           = "spi0_clk",
105         .pmc_mask       = 1 << AT91SAM9263_ID_SPI0,
106         .type           = CLK_TYPE_PERIPHERAL,
107 };
108 static struct clk spi1_clk = {
109         .name           = "spi1_clk",
110         .pmc_mask       = 1 << AT91SAM9263_ID_SPI1,
111         .type           = CLK_TYPE_PERIPHERAL,
112 };
113 static struct clk ssc0_clk = {
114         .name           = "ssc0_clk",
115         .pmc_mask       = 1 << AT91SAM9263_ID_SSC0,
116         .type           = CLK_TYPE_PERIPHERAL,
117 };
118 static struct clk ssc1_clk = {
119         .name           = "ssc1_clk",
120         .pmc_mask       = 1 << AT91SAM9263_ID_SSC1,
121         .type           = CLK_TYPE_PERIPHERAL,
122 };
123 static struct clk ac97_clk = {
124         .name           = "ac97_clk",
125         .pmc_mask       = 1 << AT91SAM9263_ID_AC97C,
126         .type           = CLK_TYPE_PERIPHERAL,
127 };
128 static struct clk tcb_clk = {
129         .name           = "tcb_clk",
130         .pmc_mask       = 1 << AT91SAM9263_ID_TCB,
131         .type           = CLK_TYPE_PERIPHERAL,
132 };
133 static struct clk pwm_clk = {
134         .name           = "pwm_clk",
135         .pmc_mask       = 1 << AT91SAM9263_ID_PWMC,
136         .type           = CLK_TYPE_PERIPHERAL,
137 };
138 static struct clk macb_clk = {
139         .name           = "macb_clk",
140         .pmc_mask       = 1 << AT91SAM9263_ID_EMAC,
141         .type           = CLK_TYPE_PERIPHERAL,
142 };
143 static struct clk dma_clk = {
144         .name           = "dma_clk",
145         .pmc_mask       = 1 << AT91SAM9263_ID_DMA,
146         .type           = CLK_TYPE_PERIPHERAL,
147 };
148 static struct clk twodge_clk = {
149         .name           = "2dge_clk",
150         .pmc_mask       = 1 << AT91SAM9263_ID_2DGE,
151         .type           = CLK_TYPE_PERIPHERAL,
152 };
153 static struct clk udc_clk = {
154         .name           = "udc_clk",
155         .pmc_mask       = 1 << AT91SAM9263_ID_UDP,
156         .type           = CLK_TYPE_PERIPHERAL,
157 };
158 static struct clk isi_clk = {
159         .name           = "isi_clk",
160         .pmc_mask       = 1 << AT91SAM9263_ID_ISI,
161         .type           = CLK_TYPE_PERIPHERAL,
162 };
163 static struct clk lcdc_clk = {
164         .name           = "lcdc_clk",
165         .pmc_mask       = 1 << AT91SAM9263_ID_LCDC,
166         .type           = CLK_TYPE_PERIPHERAL,
167 };
168 static struct clk ohci_clk = {
169         .name           = "ohci_clk",
170         .pmc_mask       = 1 << AT91SAM9263_ID_UHP,
171         .type           = CLK_TYPE_PERIPHERAL,
172 };
173
174 static struct clk *periph_clocks[] __initdata = {
175         &pioA_clk,
176         &pioB_clk,
177         &pioCDE_clk,
178         &usart0_clk,
179         &usart1_clk,
180         &usart2_clk,
181         &mmc0_clk,
182         &mmc1_clk,
183         &can_clk,
184         &twi_clk,
185         &spi0_clk,
186         &spi1_clk,
187         &ssc0_clk,
188         &ssc1_clk,
189         &ac97_clk,
190         &tcb_clk,
191         &pwm_clk,
192         &macb_clk,
193         &twodge_clk,
194         &udc_clk,
195         &isi_clk,
196         &lcdc_clk,
197         &dma_clk,
198         &ohci_clk,
199         // irq0 .. irq1
200 };
201
202 /*
203  * The four programmable clocks.
204  * You must configure pin multiplexing to bring these signals out.
205  */
206 static struct clk pck0 = {
207         .name           = "pck0",
208         .pmc_mask       = AT91_PMC_PCK0,
209         .type           = CLK_TYPE_PROGRAMMABLE,
210         .id             = 0,
211 };
212 static struct clk pck1 = {
213         .name           = "pck1",
214         .pmc_mask       = AT91_PMC_PCK1,
215         .type           = CLK_TYPE_PROGRAMMABLE,
216         .id             = 1,
217 };
218 static struct clk pck2 = {
219         .name           = "pck2",
220         .pmc_mask       = AT91_PMC_PCK2,
221         .type           = CLK_TYPE_PROGRAMMABLE,
222         .id             = 2,
223 };
224 static struct clk pck3 = {
225         .name           = "pck3",
226         .pmc_mask       = AT91_PMC_PCK3,
227         .type           = CLK_TYPE_PROGRAMMABLE,
228         .id             = 3,
229 };
230
231 static void __init at91sam9263_register_clocks(void)
232 {
233         int i;
234
235         for (i = 0; i < ARRAY_SIZE(periph_clocks); i++)
236                 clk_register(periph_clocks[i]);
237
238         clk_register(&pck0);
239         clk_register(&pck1);
240         clk_register(&pck2);
241         clk_register(&pck3);
242 }
243
244 /* --------------------------------------------------------------------
245  *  GPIO
246  * -------------------------------------------------------------------- */
247
248 static struct at91_gpio_bank at91sam9263_gpio[] = {
249         {
250                 .id             = AT91SAM9263_ID_PIOA,
251                 .offset         = AT91_PIOA,
252                 .clock          = &pioA_clk,
253         }, {
254                 .id             = AT91SAM9263_ID_PIOB,
255                 .offset         = AT91_PIOB,
256                 .clock          = &pioB_clk,
257         }, {
258                 .id             = AT91SAM9263_ID_PIOCDE,
259                 .offset         = AT91_PIOC,
260                 .clock          = &pioCDE_clk,
261         }, {
262                 .id             = AT91SAM9263_ID_PIOCDE,
263                 .offset         = AT91_PIOD,
264                 .clock          = &pioCDE_clk,
265         }, {
266                 .id             = AT91SAM9263_ID_PIOCDE,
267                 .offset         = AT91_PIOE,
268                 .clock          = &pioCDE_clk,
269         }
270 };
271
272 static void at91sam9263_reset(void)
273 {
274         at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_PROCRST | AT91_RSTC_PERRST);
275 }
276
277 static void at91sam9263_poweroff(void)
278 {
279         at91_sys_write(AT91_SHDW_CR, AT91_SHDW_KEY | AT91_SHDW_SHDW);
280 }
281
282
283 /* --------------------------------------------------------------------
284  *  AT91SAM9263 processor initialization
285  * -------------------------------------------------------------------- */
286
287 void __init at91sam9263_initialize(unsigned long main_clock)
288 {
289         /* Map peripherals */
290         iotable_init(at91sam9263_io_desc, ARRAY_SIZE(at91sam9263_io_desc));
291
292         at91_arch_reset = at91sam9263_reset;
293         pm_power_off = at91sam9263_poweroff;
294         at91_extern_irq = (1 << AT91SAM9263_ID_IRQ0) | (1 << AT91SAM9263_ID_IRQ1);
295
296         /* Init clock subsystem */
297         at91_clock_init(main_clock);
298
299         /* Register the processor-specific clocks */
300         at91sam9263_register_clocks();
301
302         /* Register GPIO subsystem */
303         at91_gpio_init(at91sam9263_gpio, 5);
304 }
305
306 /* --------------------------------------------------------------------
307  *  Interrupt initialization
308  * -------------------------------------------------------------------- */
309
310 /*
311  * The default interrupt priority levels (0 = lowest, 7 = highest).
312  */
313 static unsigned int at91sam9263_default_irq_priority[NR_AIC_IRQS] __initdata = {
314         7,      /* Advanced Interrupt Controller (FIQ) */
315         7,      /* System Peripherals */
316         1,      /* Parallel IO Controller A */
317         1,      /* Parallel IO Controller B */
318         1,      /* Parallel IO Controller C, D and E */
319         0,
320         0,
321         5,      /* USART 0 */
322         5,      /* USART 1 */
323         5,      /* USART 2 */
324         0,      /* Multimedia Card Interface 0 */
325         0,      /* Multimedia Card Interface 1 */
326         3,      /* CAN */
327         6,      /* Two-Wire Interface */
328         5,      /* Serial Peripheral Interface 0 */
329         5,      /* Serial Peripheral Interface 1 */
330         4,      /* Serial Synchronous Controller 0 */
331         4,      /* Serial Synchronous Controller 1 */
332         5,      /* AC97 Controller */
333         0,      /* Timer Counter 0, 1 and 2 */
334         0,      /* Pulse Width Modulation Controller */
335         3,      /* Ethernet */
336         0,
337         0,      /* 2D Graphic Engine */
338         2,      /* USB Device Port */
339         0,      /* Image Sensor Interface */
340         3,      /* LDC Controller */
341         0,      /* DMA Controller */
342         0,
343         2,      /* USB Host port */
344         0,      /* Advanced Interrupt Controller (IRQ0) */
345         0,      /* Advanced Interrupt Controller (IRQ1) */
346 };
347
348 void __init at91sam9263_init_interrupts(unsigned int priority[NR_AIC_IRQS])
349 {
350         if (!priority)
351                 priority = at91sam9263_default_irq_priority;
352
353         /* Initialize the AIC interrupt controller */
354         at91_aic_init(priority);
355
356         /* Enable GPIO interrupts */
357         at91_gpio_irq_setup();
358 }