Andrew Victor | 62c1660 | 2006-11-30 12:27:38 +0100 | [diff] [blame] | 1 | /* |
Andrew Victor | 9d04126 | 2007-02-05 11:42:07 +0100 | [diff] [blame] | 2 | * arch/arm/mach-at91/at91sam9261.c |
Andrew Victor | 62c1660 | 2006-11-30 12:27:38 +0100 | [diff] [blame] | 3 | * |
| 4 | * Copyright (C) 2005 SAN People |
| 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> |
Andrew Victor | 3ef2fb4 | 2008-04-02 21:36:06 +0100 | [diff] [blame] | 14 | #include <linux/pm.h> |
Andrew Victor | 62c1660 | 2006-11-30 12:27:38 +0100 | [diff] [blame] | 15 | |
| 16 | #include <asm/mach/arch.h> |
| 17 | #include <asm/mach/map.h> |
| 18 | #include <asm/arch/at91sam9261.h> |
| 19 | #include <asm/arch/at91_pmc.h> |
Andrew Victor | e9d10a1 | 2007-01-09 12:47:51 +0100 | [diff] [blame] | 20 | #include <asm/arch/at91_rstc.h> |
Andrew Victor | 3ef2fb4 | 2008-04-02 21:36:06 +0100 | [diff] [blame] | 21 | #include <asm/arch/at91_shdwc.h> |
Andrew Victor | 62c1660 | 2006-11-30 12:27:38 +0100 | [diff] [blame] | 22 | |
| 23 | #include "generic.h" |
| 24 | #include "clock.h" |
| 25 | |
| 26 | static struct map_desc at91sam9261_io_desc[] __initdata = { |
| 27 | { |
| 28 | .virtual = AT91_VA_BASE_SYS, |
| 29 | .pfn = __phys_to_pfn(AT91_BASE_SYS), |
| 30 | .length = SZ_16K, |
| 31 | .type = MT_DEVICE, |
| 32 | }, { |
| 33 | .virtual = AT91_IO_VIRT_BASE - AT91SAM9261_SRAM_SIZE, |
| 34 | .pfn = __phys_to_pfn(AT91SAM9261_SRAM_BASE), |
| 35 | .length = AT91SAM9261_SRAM_SIZE, |
| 36 | .type = MT_DEVICE, |
| 37 | }, |
| 38 | }; |
| 39 | |
| 40 | /* -------------------------------------------------------------------- |
| 41 | * Clocks |
| 42 | * -------------------------------------------------------------------- */ |
| 43 | |
| 44 | /* |
| 45 | * The peripheral clocks. |
| 46 | */ |
| 47 | static struct clk pioA_clk = { |
| 48 | .name = "pioA_clk", |
| 49 | .pmc_mask = 1 << AT91SAM9261_ID_PIOA, |
| 50 | .type = CLK_TYPE_PERIPHERAL, |
| 51 | }; |
| 52 | static struct clk pioB_clk = { |
| 53 | .name = "pioB_clk", |
| 54 | .pmc_mask = 1 << AT91SAM9261_ID_PIOB, |
| 55 | .type = CLK_TYPE_PERIPHERAL, |
| 56 | }; |
| 57 | static struct clk pioC_clk = { |
| 58 | .name = "pioC_clk", |
| 59 | .pmc_mask = 1 << AT91SAM9261_ID_PIOC, |
| 60 | .type = CLK_TYPE_PERIPHERAL, |
| 61 | }; |
| 62 | static struct clk usart0_clk = { |
| 63 | .name = "usart0_clk", |
| 64 | .pmc_mask = 1 << AT91SAM9261_ID_US0, |
| 65 | .type = CLK_TYPE_PERIPHERAL, |
| 66 | }; |
| 67 | static struct clk usart1_clk = { |
| 68 | .name = "usart1_clk", |
| 69 | .pmc_mask = 1 << AT91SAM9261_ID_US1, |
| 70 | .type = CLK_TYPE_PERIPHERAL, |
| 71 | }; |
| 72 | static struct clk usart2_clk = { |
| 73 | .name = "usart2_clk", |
| 74 | .pmc_mask = 1 << AT91SAM9261_ID_US2, |
| 75 | .type = CLK_TYPE_PERIPHERAL, |
| 76 | }; |
| 77 | static struct clk mmc_clk = { |
| 78 | .name = "mci_clk", |
| 79 | .pmc_mask = 1 << AT91SAM9261_ID_MCI, |
| 80 | .type = CLK_TYPE_PERIPHERAL, |
| 81 | }; |
| 82 | static struct clk udc_clk = { |
| 83 | .name = "udc_clk", |
| 84 | .pmc_mask = 1 << AT91SAM9261_ID_UDP, |
| 85 | .type = CLK_TYPE_PERIPHERAL, |
| 86 | }; |
| 87 | static struct clk twi_clk = { |
| 88 | .name = "twi_clk", |
| 89 | .pmc_mask = 1 << AT91SAM9261_ID_TWI, |
| 90 | .type = CLK_TYPE_PERIPHERAL, |
| 91 | }; |
| 92 | static struct clk spi0_clk = { |
| 93 | .name = "spi0_clk", |
| 94 | .pmc_mask = 1 << AT91SAM9261_ID_SPI0, |
| 95 | .type = CLK_TYPE_PERIPHERAL, |
| 96 | }; |
| 97 | static struct clk spi1_clk = { |
| 98 | .name = "spi1_clk", |
| 99 | .pmc_mask = 1 << AT91SAM9261_ID_SPI1, |
| 100 | .type = CLK_TYPE_PERIPHERAL, |
| 101 | }; |
Andrew Victor | e8788ba | 2007-05-02 17:14:57 +0100 | [diff] [blame] | 102 | static struct clk ssc0_clk = { |
| 103 | .name = "ssc0_clk", |
| 104 | .pmc_mask = 1 << AT91SAM9261_ID_SSC0, |
| 105 | .type = CLK_TYPE_PERIPHERAL, |
| 106 | }; |
| 107 | static struct clk ssc1_clk = { |
| 108 | .name = "ssc1_clk", |
| 109 | .pmc_mask = 1 << AT91SAM9261_ID_SSC1, |
| 110 | .type = CLK_TYPE_PERIPHERAL, |
| 111 | }; |
| 112 | static struct clk ssc2_clk = { |
| 113 | .name = "ssc2_clk", |
| 114 | .pmc_mask = 1 << AT91SAM9261_ID_SSC2, |
| 115 | .type = CLK_TYPE_PERIPHERAL, |
| 116 | }; |
Andrew Victor | c177a1e | 2007-02-08 10:25:38 +0100 | [diff] [blame] | 117 | static struct clk tc0_clk = { |
| 118 | .name = "tc0_clk", |
| 119 | .pmc_mask = 1 << AT91SAM9261_ID_TC0, |
| 120 | .type = CLK_TYPE_PERIPHERAL, |
| 121 | }; |
| 122 | static struct clk tc1_clk = { |
| 123 | .name = "tc1_clk", |
| 124 | .pmc_mask = 1 << AT91SAM9261_ID_TC1, |
| 125 | .type = CLK_TYPE_PERIPHERAL, |
| 126 | }; |
| 127 | static struct clk tc2_clk = { |
| 128 | .name = "tc2_clk", |
| 129 | .pmc_mask = 1 << AT91SAM9261_ID_TC2, |
| 130 | .type = CLK_TYPE_PERIPHERAL, |
| 131 | }; |
Andrew Victor | 62c1660 | 2006-11-30 12:27:38 +0100 | [diff] [blame] | 132 | static struct clk ohci_clk = { |
| 133 | .name = "ohci_clk", |
| 134 | .pmc_mask = 1 << AT91SAM9261_ID_UHP, |
| 135 | .type = CLK_TYPE_PERIPHERAL, |
| 136 | }; |
| 137 | static struct clk lcdc_clk = { |
| 138 | .name = "lcdc_clk", |
| 139 | .pmc_mask = 1 << AT91SAM9261_ID_LCDC, |
| 140 | .type = CLK_TYPE_PERIPHERAL, |
| 141 | }; |
| 142 | |
| 143 | static struct clk *periph_clocks[] __initdata = { |
| 144 | &pioA_clk, |
| 145 | &pioB_clk, |
| 146 | &pioC_clk, |
| 147 | &usart0_clk, |
| 148 | &usart1_clk, |
| 149 | &usart2_clk, |
| 150 | &mmc_clk, |
| 151 | &udc_clk, |
| 152 | &twi_clk, |
| 153 | &spi0_clk, |
| 154 | &spi1_clk, |
Andrew Victor | e8788ba | 2007-05-02 17:14:57 +0100 | [diff] [blame] | 155 | &ssc0_clk, |
| 156 | &ssc1_clk, |
| 157 | &ssc2_clk, |
Andrew Victor | c177a1e | 2007-02-08 10:25:38 +0100 | [diff] [blame] | 158 | &tc0_clk, |
| 159 | &tc1_clk, |
| 160 | &tc2_clk, |
Andrew Victor | 62c1660 | 2006-11-30 12:27:38 +0100 | [diff] [blame] | 161 | &ohci_clk, |
| 162 | &lcdc_clk, |
| 163 | // irq0 .. irq2 |
| 164 | }; |
| 165 | |
| 166 | /* |
| 167 | * The four programmable clocks. |
| 168 | * You must configure pin multiplexing to bring these signals out. |
| 169 | */ |
| 170 | static struct clk pck0 = { |
| 171 | .name = "pck0", |
| 172 | .pmc_mask = AT91_PMC_PCK0, |
| 173 | .type = CLK_TYPE_PROGRAMMABLE, |
| 174 | .id = 0, |
| 175 | }; |
| 176 | static struct clk pck1 = { |
| 177 | .name = "pck1", |
| 178 | .pmc_mask = AT91_PMC_PCK1, |
| 179 | .type = CLK_TYPE_PROGRAMMABLE, |
| 180 | .id = 1, |
| 181 | }; |
| 182 | static struct clk pck2 = { |
| 183 | .name = "pck2", |
| 184 | .pmc_mask = AT91_PMC_PCK2, |
| 185 | .type = CLK_TYPE_PROGRAMMABLE, |
| 186 | .id = 2, |
| 187 | }; |
| 188 | static struct clk pck3 = { |
| 189 | .name = "pck3", |
| 190 | .pmc_mask = AT91_PMC_PCK3, |
| 191 | .type = CLK_TYPE_PROGRAMMABLE, |
| 192 | .id = 3, |
| 193 | }; |
| 194 | |
| 195 | /* HClocks */ |
| 196 | static struct clk hck0 = { |
| 197 | .name = "hck0", |
| 198 | .pmc_mask = AT91_PMC_HCK0, |
| 199 | .type = CLK_TYPE_SYSTEM, |
| 200 | .id = 0, |
| 201 | }; |
| 202 | static struct clk hck1 = { |
| 203 | .name = "hck1", |
| 204 | .pmc_mask = AT91_PMC_HCK1, |
| 205 | .type = CLK_TYPE_SYSTEM, |
| 206 | .id = 1, |
| 207 | }; |
| 208 | |
| 209 | static void __init at91sam9261_register_clocks(void) |
| 210 | { |
| 211 | int i; |
| 212 | |
| 213 | for (i = 0; i < ARRAY_SIZE(periph_clocks); i++) |
| 214 | clk_register(periph_clocks[i]); |
| 215 | |
| 216 | clk_register(&pck0); |
| 217 | clk_register(&pck1); |
| 218 | clk_register(&pck2); |
| 219 | clk_register(&pck3); |
| 220 | |
| 221 | clk_register(&hck0); |
| 222 | clk_register(&hck1); |
| 223 | } |
| 224 | |
| 225 | /* -------------------------------------------------------------------- |
| 226 | * GPIO |
| 227 | * -------------------------------------------------------------------- */ |
| 228 | |
| 229 | static struct at91_gpio_bank at91sam9261_gpio[] = { |
| 230 | { |
| 231 | .id = AT91SAM9261_ID_PIOA, |
| 232 | .offset = AT91_PIOA, |
| 233 | .clock = &pioA_clk, |
| 234 | }, { |
| 235 | .id = AT91SAM9261_ID_PIOB, |
| 236 | .offset = AT91_PIOB, |
| 237 | .clock = &pioB_clk, |
| 238 | }, { |
| 239 | .id = AT91SAM9261_ID_PIOC, |
| 240 | .offset = AT91_PIOC, |
| 241 | .clock = &pioC_clk, |
| 242 | } |
| 243 | }; |
| 244 | |
| 245 | static void at91sam9261_reset(void) |
| 246 | { |
Jan Altenberg | dd1d2f4 | 2007-02-16 01:37:10 -0800 | [diff] [blame] | 247 | at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_PROCRST | AT91_RSTC_PERRST); |
Andrew Victor | 62c1660 | 2006-11-30 12:27:38 +0100 | [diff] [blame] | 248 | } |
| 249 | |
Andrew Victor | 3ef2fb4 | 2008-04-02 21:36:06 +0100 | [diff] [blame] | 250 | static void at91sam9261_poweroff(void) |
| 251 | { |
| 252 | at91_sys_write(AT91_SHDW_CR, AT91_SHDW_KEY | AT91_SHDW_SHDW); |
| 253 | } |
| 254 | |
Andrew Victor | 62c1660 | 2006-11-30 12:27:38 +0100 | [diff] [blame] | 255 | |
| 256 | /* -------------------------------------------------------------------- |
| 257 | * AT91SAM9261 processor initialization |
| 258 | * -------------------------------------------------------------------- */ |
| 259 | |
| 260 | void __init at91sam9261_initialize(unsigned long main_clock) |
| 261 | { |
| 262 | /* Map peripherals */ |
| 263 | iotable_init(at91sam9261_io_desc, ARRAY_SIZE(at91sam9261_io_desc)); |
| 264 | |
| 265 | at91_arch_reset = at91sam9261_reset; |
Andrew Victor | 3ef2fb4 | 2008-04-02 21:36:06 +0100 | [diff] [blame] | 266 | pm_power_off = at91sam9261_poweroff; |
Andrew Victor | 62c1660 | 2006-11-30 12:27:38 +0100 | [diff] [blame] | 267 | at91_extern_irq = (1 << AT91SAM9261_ID_IRQ0) | (1 << AT91SAM9261_ID_IRQ1) |
| 268 | | (1 << AT91SAM9261_ID_IRQ2); |
| 269 | |
| 270 | /* Init clock subsystem */ |
| 271 | at91_clock_init(main_clock); |
| 272 | |
| 273 | /* Register the processor-specific clocks */ |
| 274 | at91sam9261_register_clocks(); |
| 275 | |
| 276 | /* Register GPIO subsystem */ |
| 277 | at91_gpio_init(at91sam9261_gpio, 3); |
| 278 | } |
| 279 | |
| 280 | /* -------------------------------------------------------------------- |
| 281 | * Interrupt initialization |
| 282 | * -------------------------------------------------------------------- */ |
| 283 | |
| 284 | /* |
| 285 | * The default interrupt priority levels (0 = lowest, 7 = highest). |
| 286 | */ |
| 287 | static unsigned int at91sam9261_default_irq_priority[NR_AIC_IRQS] __initdata = { |
| 288 | 7, /* Advanced Interrupt Controller */ |
| 289 | 7, /* System Peripherals */ |
Andrew Victor | 7cbed2b | 2007-11-20 08:46:53 +0100 | [diff] [blame] | 290 | 1, /* Parallel IO Controller A */ |
| 291 | 1, /* Parallel IO Controller B */ |
| 292 | 1, /* Parallel IO Controller C */ |
Andrew Victor | 62c1660 | 2006-11-30 12:27:38 +0100 | [diff] [blame] | 293 | 0, |
Andrew Victor | 7cbed2b | 2007-11-20 08:46:53 +0100 | [diff] [blame] | 294 | 5, /* USART 0 */ |
| 295 | 5, /* USART 1 */ |
| 296 | 5, /* USART 2 */ |
Andrew Victor | 62c1660 | 2006-11-30 12:27:38 +0100 | [diff] [blame] | 297 | 0, /* Multimedia Card Interface */ |
Andrew Victor | 7cbed2b | 2007-11-20 08:46:53 +0100 | [diff] [blame] | 298 | 2, /* USB Device Port */ |
| 299 | 6, /* Two-Wire Interface */ |
| 300 | 5, /* Serial Peripheral Interface 0 */ |
| 301 | 5, /* Serial Peripheral Interface 1 */ |
| 302 | 4, /* Serial Synchronous Controller 0 */ |
| 303 | 4, /* Serial Synchronous Controller 1 */ |
| 304 | 4, /* Serial Synchronous Controller 2 */ |
Andrew Victor | 62c1660 | 2006-11-30 12:27:38 +0100 | [diff] [blame] | 305 | 0, /* Timer Counter 0 */ |
| 306 | 0, /* Timer Counter 1 */ |
| 307 | 0, /* Timer Counter 2 */ |
Andrew Victor | 7cbed2b | 2007-11-20 08:46:53 +0100 | [diff] [blame] | 308 | 2, /* USB Host port */ |
Andrew Victor | 62c1660 | 2006-11-30 12:27:38 +0100 | [diff] [blame] | 309 | 3, /* LCD Controller */ |
| 310 | 0, |
| 311 | 0, |
| 312 | 0, |
| 313 | 0, |
| 314 | 0, |
| 315 | 0, |
| 316 | 0, |
| 317 | 0, /* Advanced Interrupt Controller */ |
| 318 | 0, /* Advanced Interrupt Controller */ |
| 319 | 0, /* Advanced Interrupt Controller */ |
| 320 | }; |
| 321 | |
| 322 | void __init at91sam9261_init_interrupts(unsigned int priority[NR_AIC_IRQS]) |
| 323 | { |
| 324 | if (!priority) |
| 325 | priority = at91sam9261_default_irq_priority; |
| 326 | |
| 327 | /* Initialize the AIC interrupt controller */ |
| 328 | at91_aic_init(priority); |
| 329 | |
| 330 | /* Enable GPIO interrupts */ |
| 331 | at91_gpio_irq_setup(); |
| 332 | } |