1 /*
2 * Emma Mobile EV2 processor support
3 *
4 * Copyright (C) 2012 Magnus Damm
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; version 2 of the License.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19 #include <linux/kernel.h>
20 #include <linux/init.h>
21 #include <linux/interrupt.h>
22 #include <linux/irq.h>
23 #include <linux/irqchip.h>
24 #include <linux/platform_device.h>
25 #include <linux/platform_data/gpio-em.h>
26 #include <linux/of_platform.h>
27 #include <linux/delay.h>
28 #include <linux/input.h>
29 #include <linux/io.h>
30 #include <linux/irqchip/arm-gic.h>
31 #include <mach/hardware.h>
32 #include <mach/common.h>
33 #include <mach/emev2.h>
34 #include <mach/irqs.h>
35 #include <asm/mach-types.h>
36 #include <asm/mach/arch.h>
37 #include <asm/mach/map.h>
38 #include <asm/mach/time.h>
39
40 static struct map_desc emev2_io_desc[] __initdata = {
41 #ifdef CONFIG_SMP
42 /* 128K entity map for 0xe0100000 (SMU) */
43 {
44 .virtual = 0xe0100000,
45 .pfn = __phys_to_pfn(0xe0100000),
46 .length = SZ_128K,
47 .type = MT_DEVICE
48 },
49 /* 2M mapping for SCU + L2 controller */
50 {
51 .virtual = 0xf0000000,
52 .pfn = __phys_to_pfn(0x1e000000),
53 .length = SZ_2M,
54 .type = MT_DEVICE
55 },
56 #endif
57 };
58
emev2_map_io(void)59 void __init emev2_map_io(void)
60 {
61 iotable_init(emev2_io_desc, ARRAY_SIZE(emev2_io_desc));
62 }
63
64 /* UART */
65 static struct resource uart0_resources[] = {
66 [0] = {
67 .start = 0xe1020000,
68 .end = 0xe1020037,
69 .flags = IORESOURCE_MEM,
70 },
71 [1] = {
72 .start = 40,
73 .flags = IORESOURCE_IRQ,
74 }
75 };
76
77 static struct platform_device uart0_device = {
78 .name = "serial8250-em",
79 .id = 0,
80 .num_resources = ARRAY_SIZE(uart0_resources),
81 .resource = uart0_resources,
82 };
83
84 static struct resource uart1_resources[] = {
85 [0] = {
86 .start = 0xe1030000,
87 .end = 0xe1030037,
88 .flags = IORESOURCE_MEM,
89 },
90 [1] = {
91 .start = 41,
92 .flags = IORESOURCE_IRQ,
93 }
94 };
95
96 static struct platform_device uart1_device = {
97 .name = "serial8250-em",
98 .id = 1,
99 .num_resources = ARRAY_SIZE(uart1_resources),
100 .resource = uart1_resources,
101 };
102
103 static struct resource uart2_resources[] = {
104 [0] = {
105 .start = 0xe1040000,
106 .end = 0xe1040037,
107 .flags = IORESOURCE_MEM,
108 },
109 [1] = {
110 .start = 42,
111 .flags = IORESOURCE_IRQ,
112 }
113 };
114
115 static struct platform_device uart2_device = {
116 .name = "serial8250-em",
117 .id = 2,
118 .num_resources = ARRAY_SIZE(uart2_resources),
119 .resource = uart2_resources,
120 };
121
122 static struct resource uart3_resources[] = {
123 [0] = {
124 .start = 0xe1050000,
125 .end = 0xe1050037,
126 .flags = IORESOURCE_MEM,
127 },
128 [1] = {
129 .start = 43,
130 .flags = IORESOURCE_IRQ,
131 }
132 };
133
134 static struct platform_device uart3_device = {
135 .name = "serial8250-em",
136 .id = 3,
137 .num_resources = ARRAY_SIZE(uart3_resources),
138 .resource = uart3_resources,
139 };
140
141 /* STI */
142 static struct resource sti_resources[] = {
143 [0] = {
144 .name = "STI",
145 .start = 0xe0180000,
146 .end = 0xe0180053,
147 .flags = IORESOURCE_MEM,
148 },
149 [1] = {
150 .start = 157,
151 .flags = IORESOURCE_IRQ,
152 },
153 };
154
155 static struct platform_device sti_device = {
156 .name = "em_sti",
157 .id = 0,
158 .resource = sti_resources,
159 .num_resources = ARRAY_SIZE(sti_resources),
160 };
161
162
163 /* GIO */
164 static struct gpio_em_config gio0_config = {
165 .gpio_base = 0,
166 .irq_base = EMEV2_GPIO_IRQ(0),
167 .number_of_pins = 32,
168 };
169
170 static struct resource gio0_resources[] = {
171 [0] = {
172 .name = "GIO_000",
173 .start = 0xe0050000,
174 .end = 0xe005002b,
175 .flags = IORESOURCE_MEM,
176 },
177 [1] = {
178 .name = "GIO_000",
179 .start = 0xe0050040,
180 .end = 0xe005005f,
181 .flags = IORESOURCE_MEM,
182 },
183 [2] = {
184 .start = 99,
185 .flags = IORESOURCE_IRQ,
186 },
187 [3] = {
188 .start = 100,
189 .flags = IORESOURCE_IRQ,
190 },
191 };
192
193 static struct platform_device gio0_device = {
194 .name = "em_gio",
195 .id = 0,
196 .resource = gio0_resources,
197 .num_resources = ARRAY_SIZE(gio0_resources),
198 .dev = {
199 .platform_data = &gio0_config,
200 },
201 };
202
203 static struct gpio_em_config gio1_config = {
204 .gpio_base = 32,
205 .irq_base = EMEV2_GPIO_IRQ(32),
206 .number_of_pins = 32,
207 };
208
209 static struct resource gio1_resources[] = {
210 [0] = {
211 .name = "GIO_032",
212 .start = 0xe0050080,
213 .end = 0xe00500ab,
214 .flags = IORESOURCE_MEM,
215 },
216 [1] = {
217 .name = "GIO_032",
218 .start = 0xe00500c0,
219 .end = 0xe00500df,
220 .flags = IORESOURCE_MEM,
221 },
222 [2] = {
223 .start = 101,
224 .flags = IORESOURCE_IRQ,
225 },
226 [3] = {
227 .start = 102,
228 .flags = IORESOURCE_IRQ,
229 },
230 };
231
232 static struct platform_device gio1_device = {
233 .name = "em_gio",
234 .id = 1,
235 .resource = gio1_resources,
236 .num_resources = ARRAY_SIZE(gio1_resources),
237 .dev = {
238 .platform_data = &gio1_config,
239 },
240 };
241
242 static struct gpio_em_config gio2_config = {
243 .gpio_base = 64,
244 .irq_base = EMEV2_GPIO_IRQ(64),
245 .number_of_pins = 32,
246 };
247
248 static struct resource gio2_resources[] = {
249 [0] = {
250 .name = "GIO_064",
251 .start = 0xe0050100,
252 .end = 0xe005012b,
253 .flags = IORESOURCE_MEM,
254 },
255 [1] = {
256 .name = "GIO_064",
257 .start = 0xe0050140,
258 .end = 0xe005015f,
259 .flags = IORESOURCE_MEM,
260 },
261 [2] = {
262 .start = 103,
263 .flags = IORESOURCE_IRQ,
264 },
265 [3] = {
266 .start = 104,
267 .flags = IORESOURCE_IRQ,
268 },
269 };
270
271 static struct platform_device gio2_device = {
272 .name = "em_gio",
273 .id = 2,
274 .resource = gio2_resources,
275 .num_resources = ARRAY_SIZE(gio2_resources),
276 .dev = {
277 .platform_data = &gio2_config,
278 },
279 };
280
281 static struct gpio_em_config gio3_config = {
282 .gpio_base = 96,
283 .irq_base = EMEV2_GPIO_IRQ(96),
284 .number_of_pins = 32,
285 };
286
287 static struct resource gio3_resources[] = {
288 [0] = {
289 .name = "GIO_096",
290 .start = 0xe0050100,
291 .end = 0xe005012b,
292 .flags = IORESOURCE_MEM,
293 },
294 [1] = {
295 .name = "GIO_096",
296 .start = 0xe0050140,
297 .end = 0xe005015f,
298 .flags = IORESOURCE_MEM,
299 },
300 [2] = {
301 .start = 105,
302 .flags = IORESOURCE_IRQ,
303 },
304 [3] = {
305 .start = 106,
306 .flags = IORESOURCE_IRQ,
307 },
308 };
309
310 static struct platform_device gio3_device = {
311 .name = "em_gio",
312 .id = 3,
313 .resource = gio3_resources,
314 .num_resources = ARRAY_SIZE(gio3_resources),
315 .dev = {
316 .platform_data = &gio3_config,
317 },
318 };
319
320 static struct gpio_em_config gio4_config = {
321 .gpio_base = 128,
322 .irq_base = EMEV2_GPIO_IRQ(128),
323 .number_of_pins = 31,
324 };
325
326 static struct resource gio4_resources[] = {
327 [0] = {
328 .name = "GIO_128",
329 .start = 0xe0050200,
330 .end = 0xe005022b,
331 .flags = IORESOURCE_MEM,
332 },
333 [1] = {
334 .name = "GIO_128",
335 .start = 0xe0050240,
336 .end = 0xe005025f,
337 .flags = IORESOURCE_MEM,
338 },
339 [2] = {
340 .start = 107,
341 .flags = IORESOURCE_IRQ,
342 },
343 [3] = {
344 .start = 108,
345 .flags = IORESOURCE_IRQ,
346 },
347 };
348
349 static struct platform_device gio4_device = {
350 .name = "em_gio",
351 .id = 4,
352 .resource = gio4_resources,
353 .num_resources = ARRAY_SIZE(gio4_resources),
354 .dev = {
355 .platform_data = &gio4_config,
356 },
357 };
358
359 static struct resource pmu_resources[] = {
360 [0] = {
361 .start = 152,
362 .end = 152,
363 .flags = IORESOURCE_IRQ,
364 },
365 [1] = {
366 .start = 153,
367 .end = 153,
368 .flags = IORESOURCE_IRQ,
369 },
370 };
371
372 static struct platform_device pmu_device = {
373 .name = "arm-pmu",
374 .id = -1,
375 .num_resources = ARRAY_SIZE(pmu_resources),
376 .resource = pmu_resources,
377 };
378
379 static struct platform_device *emev2_early_devices[] __initdata = {
380 &uart0_device,
381 &uart1_device,
382 &uart2_device,
383 &uart3_device,
384 };
385
386 static struct platform_device *emev2_late_devices[] __initdata = {
387 &sti_device,
388 &gio0_device,
389 &gio1_device,
390 &gio2_device,
391 &gio3_device,
392 &gio4_device,
393 &pmu_device,
394 };
395
emev2_add_standard_devices(void)396 void __init emev2_add_standard_devices(void)
397 {
398 emev2_clock_init();
399
400 platform_add_devices(emev2_early_devices,
401 ARRAY_SIZE(emev2_early_devices));
402
403 platform_add_devices(emev2_late_devices,
404 ARRAY_SIZE(emev2_late_devices));
405 }
406
emev2_init_delay(void)407 static void __init emev2_init_delay(void)
408 {
409 shmobile_setup_delay(533, 1, 3); /* Cortex-A9 @ 533MHz */
410 }
411
emev2_add_early_devices(void)412 void __init emev2_add_early_devices(void)
413 {
414 emev2_init_delay();
415
416 early_platform_add_devices(emev2_early_devices,
417 ARRAY_SIZE(emev2_early_devices));
418
419 /* setup early console here as well */
420 shmobile_setup_console();
421 }
422
emev2_init_irq(void)423 void __init emev2_init_irq(void)
424 {
425 void __iomem *gic_dist_base;
426 void __iomem *gic_cpu_base;
427
428 /* Static mappings, never released */
429 gic_dist_base = ioremap(0xe0028000, PAGE_SIZE);
430 gic_cpu_base = ioremap(0xe0020000, PAGE_SIZE);
431 BUG_ON(!gic_dist_base || !gic_cpu_base);
432
433 /* Use GIC to handle interrupts */
434 gic_init(0, 29, gic_dist_base, gic_cpu_base);
435 }
436
437 #ifdef CONFIG_USE_OF
438 static const struct of_dev_auxdata emev2_auxdata_lookup[] __initconst = {
439 { }
440 };
441
emev2_add_standard_devices_dt(void)442 static void __init emev2_add_standard_devices_dt(void)
443 {
444 of_platform_populate(NULL, of_default_bus_match_table,
445 emev2_auxdata_lookup, NULL);
446 }
447
448 static const char *emev2_boards_compat_dt[] __initdata = {
449 "renesas,emev2",
450 NULL,
451 };
452
453 DT_MACHINE_START(EMEV2_DT, "Generic Emma Mobile EV2 (Flattened Device Tree)")
454 .smp = smp_ops(emev2_smp_ops),
455 .init_early = emev2_init_delay,
456 .nr_irqs = NR_IRQS_LEGACY,
457 .init_irq = irqchip_init,
458 .init_machine = emev2_add_standard_devices_dt,
459 .dt_compat = emev2_boards_compat_dt,
460 MACHINE_END
461
462 #endif /* CONFIG_USE_OF */
463