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877d7720 AV |
1 | /* |
2 | * arch/arm/mach-at91/at91sam9rl.c | |
3 | * | |
4 | * Copyright (C) 2005 SAN People | |
5 | * Copyright (C) 2007 Atmel Corporation | |
6 | * | |
7 | * This file is subject to the terms and conditions of the GNU General Public | |
8 | * License. See the file COPYING in the main directory of this archive for | |
9 | * more details. | |
10 | */ | |
11 | ||
12 | #include <linux/module.h> | |
13 | ||
c9dfafba | 14 | #include <asm/proc-fns.h> |
80b02c17 | 15 | #include <asm/irq.h> |
877d7720 AV |
16 | #include <asm/mach/arch.h> |
17 | #include <asm/mach/map.h> | |
a09e64fb | 18 | #include <mach/cpu.h> |
8c3583b6 | 19 | #include <mach/at91_dbgu.h> |
a09e64fb RK |
20 | #include <mach/at91sam9rl.h> |
21 | #include <mach/at91_pmc.h> | |
22 | #include <mach/at91_rstc.h> | |
877d7720 | 23 | |
21d08b9d | 24 | #include "soc.h" |
877d7720 AV |
25 | #include "generic.h" |
26 | #include "clock.h" | |
faee0cc3 | 27 | #include "sam9_smc.h" |
877d7720 | 28 | |
877d7720 AV |
29 | /* -------------------------------------------------------------------- |
30 | * Clocks | |
31 | * -------------------------------------------------------------------- */ | |
32 | ||
33 | /* | |
34 | * The peripheral clocks. | |
35 | */ | |
36 | static struct clk pioA_clk = { | |
37 | .name = "pioA_clk", | |
38 | .pmc_mask = 1 << AT91SAM9RL_ID_PIOA, | |
39 | .type = CLK_TYPE_PERIPHERAL, | |
40 | }; | |
41 | static struct clk pioB_clk = { | |
42 | .name = "pioB_clk", | |
43 | .pmc_mask = 1 << AT91SAM9RL_ID_PIOB, | |
44 | .type = CLK_TYPE_PERIPHERAL, | |
45 | }; | |
46 | static struct clk pioC_clk = { | |
47 | .name = "pioC_clk", | |
48 | .pmc_mask = 1 << AT91SAM9RL_ID_PIOC, | |
49 | .type = CLK_TYPE_PERIPHERAL, | |
50 | }; | |
51 | static struct clk pioD_clk = { | |
52 | .name = "pioD_clk", | |
53 | .pmc_mask = 1 << AT91SAM9RL_ID_PIOD, | |
54 | .type = CLK_TYPE_PERIPHERAL, | |
55 | }; | |
56 | static struct clk usart0_clk = { | |
57 | .name = "usart0_clk", | |
58 | .pmc_mask = 1 << AT91SAM9RL_ID_US0, | |
59 | .type = CLK_TYPE_PERIPHERAL, | |
60 | }; | |
61 | static struct clk usart1_clk = { | |
62 | .name = "usart1_clk", | |
63 | .pmc_mask = 1 << AT91SAM9RL_ID_US1, | |
64 | .type = CLK_TYPE_PERIPHERAL, | |
65 | }; | |
66 | static struct clk usart2_clk = { | |
67 | .name = "usart2_clk", | |
68 | .pmc_mask = 1 << AT91SAM9RL_ID_US2, | |
69 | .type = CLK_TYPE_PERIPHERAL, | |
70 | }; | |
71 | static struct clk usart3_clk = { | |
72 | .name = "usart3_clk", | |
73 | .pmc_mask = 1 << AT91SAM9RL_ID_US3, | |
74 | .type = CLK_TYPE_PERIPHERAL, | |
75 | }; | |
76 | static struct clk mmc_clk = { | |
77 | .name = "mci_clk", | |
78 | .pmc_mask = 1 << AT91SAM9RL_ID_MCI, | |
79 | .type = CLK_TYPE_PERIPHERAL, | |
80 | }; | |
81 | static struct clk twi0_clk = { | |
82 | .name = "twi0_clk", | |
83 | .pmc_mask = 1 << AT91SAM9RL_ID_TWI0, | |
84 | .type = CLK_TYPE_PERIPHERAL, | |
85 | }; | |
86 | static struct clk twi1_clk = { | |
87 | .name = "twi1_clk", | |
88 | .pmc_mask = 1 << AT91SAM9RL_ID_TWI1, | |
89 | .type = CLK_TYPE_PERIPHERAL, | |
90 | }; | |
91 | static struct clk spi_clk = { | |
92 | .name = "spi_clk", | |
93 | .pmc_mask = 1 << AT91SAM9RL_ID_SPI, | |
94 | .type = CLK_TYPE_PERIPHERAL, | |
95 | }; | |
96 | static struct clk ssc0_clk = { | |
97 | .name = "ssc0_clk", | |
98 | .pmc_mask = 1 << AT91SAM9RL_ID_SSC0, | |
99 | .type = CLK_TYPE_PERIPHERAL, | |
100 | }; | |
101 | static struct clk ssc1_clk = { | |
102 | .name = "ssc1_clk", | |
103 | .pmc_mask = 1 << AT91SAM9RL_ID_SSC1, | |
104 | .type = CLK_TYPE_PERIPHERAL, | |
105 | }; | |
106 | static struct clk tc0_clk = { | |
107 | .name = "tc0_clk", | |
108 | .pmc_mask = 1 << AT91SAM9RL_ID_TC0, | |
109 | .type = CLK_TYPE_PERIPHERAL, | |
110 | }; | |
111 | static struct clk tc1_clk = { | |
112 | .name = "tc1_clk", | |
113 | .pmc_mask = 1 << AT91SAM9RL_ID_TC1, | |
114 | .type = CLK_TYPE_PERIPHERAL, | |
115 | }; | |
116 | static struct clk tc2_clk = { | |
117 | .name = "tc2_clk", | |
118 | .pmc_mask = 1 << AT91SAM9RL_ID_TC2, | |
119 | .type = CLK_TYPE_PERIPHERAL, | |
120 | }; | |
bb1ad68b AV |
121 | static struct clk pwm_clk = { |
122 | .name = "pwm_clk", | |
877d7720 AV |
123 | .pmc_mask = 1 << AT91SAM9RL_ID_PWMC, |
124 | .type = CLK_TYPE_PERIPHERAL, | |
125 | }; | |
126 | static struct clk tsc_clk = { | |
127 | .name = "tsc_clk", | |
128 | .pmc_mask = 1 << AT91SAM9RL_ID_TSC, | |
129 | .type = CLK_TYPE_PERIPHERAL, | |
130 | }; | |
131 | static struct clk dma_clk = { | |
132 | .name = "dma_clk", | |
133 | .pmc_mask = 1 << AT91SAM9RL_ID_DMA, | |
134 | .type = CLK_TYPE_PERIPHERAL, | |
135 | }; | |
136 | static struct clk udphs_clk = { | |
137 | .name = "udphs_clk", | |
138 | .pmc_mask = 1 << AT91SAM9RL_ID_UDPHS, | |
139 | .type = CLK_TYPE_PERIPHERAL, | |
140 | }; | |
141 | static struct clk lcdc_clk = { | |
142 | .name = "lcdc_clk", | |
143 | .pmc_mask = 1 << AT91SAM9RL_ID_LCDC, | |
144 | .type = CLK_TYPE_PERIPHERAL, | |
145 | }; | |
146 | static struct clk ac97_clk = { | |
147 | .name = "ac97_clk", | |
148 | .pmc_mask = 1 << AT91SAM9RL_ID_AC97C, | |
149 | .type = CLK_TYPE_PERIPHERAL, | |
150 | }; | |
151 | ||
152 | static struct clk *periph_clocks[] __initdata = { | |
153 | &pioA_clk, | |
154 | &pioB_clk, | |
155 | &pioC_clk, | |
156 | &pioD_clk, | |
157 | &usart0_clk, | |
158 | &usart1_clk, | |
159 | &usart2_clk, | |
160 | &usart3_clk, | |
161 | &mmc_clk, | |
162 | &twi0_clk, | |
163 | &twi1_clk, | |
164 | &spi_clk, | |
165 | &ssc0_clk, | |
166 | &ssc1_clk, | |
167 | &tc0_clk, | |
168 | &tc1_clk, | |
169 | &tc2_clk, | |
bb1ad68b | 170 | &pwm_clk, |
877d7720 AV |
171 | &tsc_clk, |
172 | &dma_clk, | |
173 | &udphs_clk, | |
174 | &lcdc_clk, | |
175 | &ac97_clk, | |
176 | // irq0 | |
177 | }; | |
178 | ||
bd602995 | 179 | static struct clk_lookup periph_clocks_lookups[] = { |
9d87159e JCPV |
180 | CLKDEV_CON_DEV_ID("hclk", "atmel_usba_udc", &utmi_clk), |
181 | CLKDEV_CON_DEV_ID("pclk", "atmel_usba_udc", &udphs_clk), | |
bd602995 JCPV |
182 | CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.0", &tc0_clk), |
183 | CLKDEV_CON_DEV_ID("t1_clk", "atmel_tcb.0", &tc1_clk), | |
184 | CLKDEV_CON_DEV_ID("t2_clk", "atmel_tcb.0", &tc2_clk), | |
185 | CLKDEV_CON_DEV_ID("pclk", "ssc.0", &ssc0_clk), | |
186 | CLKDEV_CON_DEV_ID("pclk", "ssc.1", &ssc1_clk), | |
619d4a4b JCPV |
187 | CLKDEV_CON_ID("pioA", &pioA_clk), |
188 | CLKDEV_CON_ID("pioB", &pioB_clk), | |
189 | CLKDEV_CON_ID("pioC", &pioC_clk), | |
190 | CLKDEV_CON_ID("pioD", &pioD_clk), | |
bd602995 JCPV |
191 | }; |
192 | ||
193 | static struct clk_lookup usart_clocks_lookups[] = { | |
194 | CLKDEV_CON_DEV_ID("usart", "atmel_usart.0", &mck), | |
195 | CLKDEV_CON_DEV_ID("usart", "atmel_usart.1", &usart0_clk), | |
196 | CLKDEV_CON_DEV_ID("usart", "atmel_usart.2", &usart1_clk), | |
197 | CLKDEV_CON_DEV_ID("usart", "atmel_usart.3", &usart2_clk), | |
198 | CLKDEV_CON_DEV_ID("usart", "atmel_usart.4", &usart3_clk), | |
199 | }; | |
200 | ||
877d7720 AV |
201 | /* |
202 | * The two programmable clocks. | |
203 | * You must configure pin multiplexing to bring these signals out. | |
204 | */ | |
205 | static struct clk pck0 = { | |
206 | .name = "pck0", | |
207 | .pmc_mask = AT91_PMC_PCK0, | |
208 | .type = CLK_TYPE_PROGRAMMABLE, | |
209 | .id = 0, | |
210 | }; | |
211 | static struct clk pck1 = { | |
212 | .name = "pck1", | |
213 | .pmc_mask = AT91_PMC_PCK1, | |
214 | .type = CLK_TYPE_PROGRAMMABLE, | |
215 | .id = 1, | |
216 | }; | |
217 | ||
218 | static void __init at91sam9rl_register_clocks(void) | |
219 | { | |
220 | int i; | |
221 | ||
222 | for (i = 0; i < ARRAY_SIZE(periph_clocks); i++) | |
223 | clk_register(periph_clocks[i]); | |
224 | ||
bd602995 JCPV |
225 | clkdev_add_table(periph_clocks_lookups, |
226 | ARRAY_SIZE(periph_clocks_lookups)); | |
227 | clkdev_add_table(usart_clocks_lookups, | |
228 | ARRAY_SIZE(usart_clocks_lookups)); | |
229 | ||
877d7720 AV |
230 | clk_register(&pck0); |
231 | clk_register(&pck1); | |
232 | } | |
233 | ||
bd602995 JCPV |
234 | static struct clk_lookup console_clock_lookup; |
235 | ||
236 | void __init at91sam9rl_set_console_clock(int id) | |
237 | { | |
238 | if (id >= ARRAY_SIZE(usart_clocks_lookups)) | |
239 | return; | |
240 | ||
241 | console_clock_lookup.con_id = "usart"; | |
242 | console_clock_lookup.clk = usart_clocks_lookups[id].clk; | |
243 | clkdev_add(&console_clock_lookup); | |
244 | } | |
245 | ||
877d7720 AV |
246 | /* -------------------------------------------------------------------- |
247 | * GPIO | |
248 | * -------------------------------------------------------------------- */ | |
249 | ||
1a2d9156 | 250 | static struct at91_gpio_bank at91sam9rl_gpio[] __initdata = { |
877d7720 AV |
251 | { |
252 | .id = AT91SAM9RL_ID_PIOA, | |
80e91cb8 | 253 | .regbase = AT91SAM9RL_BASE_PIOA, |
877d7720 AV |
254 | }, { |
255 | .id = AT91SAM9RL_ID_PIOB, | |
80e91cb8 | 256 | .regbase = AT91SAM9RL_BASE_PIOB, |
877d7720 AV |
257 | }, { |
258 | .id = AT91SAM9RL_ID_PIOC, | |
80e91cb8 | 259 | .regbase = AT91SAM9RL_BASE_PIOC, |
877d7720 AV |
260 | }, { |
261 | .id = AT91SAM9RL_ID_PIOD, | |
80e91cb8 | 262 | .regbase = AT91SAM9RL_BASE_PIOD, |
877d7720 AV |
263 | } |
264 | }; | |
265 | ||
877d7720 AV |
266 | /* -------------------------------------------------------------------- |
267 | * AT91SAM9RL processor initialization | |
268 | * -------------------------------------------------------------------- */ | |
269 | ||
21d08b9d | 270 | static void __init at91sam9rl_map_io(void) |
877d7720 | 271 | { |
8c3583b6 | 272 | unsigned long sram_size; |
877d7720 | 273 | |
8c3583b6 | 274 | switch (at91_soc_initdata.cidr & AT91_CIDR_SRAMSIZ) { |
877d7720 AV |
275 | case AT91_CIDR_SRAMSIZ_32K: |
276 | sram_size = 2 * SZ_16K; | |
277 | break; | |
278 | case AT91_CIDR_SRAMSIZ_16K: | |
279 | default: | |
280 | sram_size = SZ_16K; | |
281 | } | |
282 | ||
877d7720 | 283 | /* Map SRAM */ |
f0051d82 | 284 | at91_init_sram(0, AT91SAM9RL_SRAM_BASE, sram_size); |
1b021a3b | 285 | } |
877d7720 | 286 | |
cfa5a1fe JCPV |
287 | static void __init at91sam9rl_ioremap_registers(void) |
288 | { | |
f22deee5 | 289 | at91_ioremap_shdwc(AT91SAM9RL_BASE_SHDWC); |
e9f68b5c | 290 | at91_ioremap_rstc(AT91SAM9RL_BASE_RSTC); |
4ab0c599 | 291 | at91sam926x_ioremap_pit(AT91SAM9RL_BASE_PIT); |
faee0cc3 | 292 | at91sam9_ioremap_smc(0, AT91SAM9RL_BASE_SMC); |
cfa5a1fe JCPV |
293 | } |
294 | ||
c9dfafba NP |
295 | static void at91sam9rl_idle(void) |
296 | { | |
297 | at91_sys_write(AT91_PMC_SCDR, AT91_PMC_PCK); | |
298 | cpu_do_idle(); | |
299 | } | |
300 | ||
46539374 | 301 | static void __init at91sam9rl_initialize(void) |
1b021a3b | 302 | { |
c9dfafba | 303 | arm_pm_idle = at91sam9rl_idle; |
1b2073e7 | 304 | arm_pm_restart = at91sam9_alt_restart; |
877d7720 AV |
305 | at91_extern_irq = (1 << AT91SAM9RL_ID_IRQ0); |
306 | ||
877d7720 AV |
307 | /* Register GPIO subsystem */ |
308 | at91_gpio_init(at91sam9rl_gpio, 4); | |
309 | } | |
310 | ||
311 | /* -------------------------------------------------------------------- | |
312 | * Interrupt initialization | |
313 | * -------------------------------------------------------------------- */ | |
314 | ||
315 | /* | |
316 | * The default interrupt priority levels (0 = lowest, 7 = highest). | |
317 | */ | |
318 | static unsigned int at91sam9rl_default_irq_priority[NR_AIC_IRQS] __initdata = { | |
319 | 7, /* Advanced Interrupt Controller */ | |
320 | 7, /* System Peripherals */ | |
321 | 1, /* Parallel IO Controller A */ | |
322 | 1, /* Parallel IO Controller B */ | |
323 | 1, /* Parallel IO Controller C */ | |
324 | 1, /* Parallel IO Controller D */ | |
325 | 5, /* USART 0 */ | |
326 | 5, /* USART 1 */ | |
327 | 5, /* USART 2 */ | |
328 | 5, /* USART 3 */ | |
329 | 0, /* Multimedia Card Interface */ | |
330 | 6, /* Two-Wire Interface 0 */ | |
331 | 6, /* Two-Wire Interface 1 */ | |
332 | 5, /* Serial Peripheral Interface */ | |
333 | 4, /* Serial Synchronous Controller 0 */ | |
334 | 4, /* Serial Synchronous Controller 1 */ | |
335 | 0, /* Timer Counter 0 */ | |
336 | 0, /* Timer Counter 1 */ | |
337 | 0, /* Timer Counter 2 */ | |
338 | 0, | |
339 | 0, /* Touch Screen Controller */ | |
340 | 0, /* DMA Controller */ | |
341 | 2, /* USB Device High speed port */ | |
342 | 2, /* LCD Controller */ | |
343 | 6, /* AC97 Controller */ | |
344 | 0, | |
345 | 0, | |
346 | 0, | |
347 | 0, | |
348 | 0, | |
349 | 0, | |
350 | 0, /* Advanced Interrupt Controller */ | |
351 | }; | |
352 | ||
8c3583b6 | 353 | struct at91_init_soc __initdata at91sam9rl_soc = { |
21d08b9d | 354 | .map_io = at91sam9rl_map_io, |
92100c12 | 355 | .default_irq_priority = at91sam9rl_default_irq_priority, |
cfa5a1fe | 356 | .ioremap_registers = at91sam9rl_ioremap_registers, |
51ddec76 | 357 | .register_clocks = at91sam9rl_register_clocks, |
21d08b9d JCPV |
358 | .init = at91sam9rl_initialize, |
359 | }; |