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block: move down direct IO plugging
[linux/fpc-iii.git] / arch / arm / mach-spear6xx / spear6xx.c
blob5a5a52db252bf79d6d776c4a2cbdbbf330ba9e43
1 /*
2 * arch/arm/mach-spear6xx/spear6xx.c
3 *
4 * SPEAr6XX machines common source file
5 *
6 * Copyright (C) 2009 ST Microelectronics
7 * Rajeev Kumar<rajeev-dlh.kumar@st.com>
8 *
9 * Copyright 2012 Stefan Roese <sr@denx.de>
10 *
11 * This file is licensed under the terms of the GNU General Public
12 * License version 2. This program is licensed "as is" without any
13 * warranty of any kind, whether express or implied.
14 */
15
16 #include <linux/amba/pl08x.h>
17 #include <linux/clk.h>
18 #include <linux/err.h>
19 #include <linux/of.h>
20 #include <linux/of_address.h>
21 #include <linux/of_irq.h>
22 #include <linux/of_platform.h>
23 #include <asm/hardware/pl080.h>
24 #include <asm/hardware/vic.h>
25 #include <asm/mach/arch.h>
26 #include <asm/mach/time.h>
27 #include <asm/mach/map.h>
28 #include <plat/pl080.h>
29 #include <mach/generic.h>
30 #include <mach/spear.h>
31
32 /* dmac device registration */
33 static struct pl08x_channel_data spear600_dma_info[] = {
34 {
35 .bus_id = "ssp1_rx",
36 .min_signal = 0,
37 .max_signal = 0,
38 .muxval = 0,
39 .periph_buses = PL08X_AHB1,
40 }, {
41 .bus_id = "ssp1_tx",
42 .min_signal = 1,
43 .max_signal = 1,
44 .muxval = 0,
45 .periph_buses = PL08X_AHB1,
46 }, {
47 .bus_id = "uart0_rx",
48 .min_signal = 2,
49 .max_signal = 2,
50 .muxval = 0,
51 .periph_buses = PL08X_AHB1,
52 }, {
53 .bus_id = "uart0_tx",
54 .min_signal = 3,
55 .max_signal = 3,
56 .muxval = 0,
57 .periph_buses = PL08X_AHB1,
58 }, {
59 .bus_id = "uart1_rx",
60 .min_signal = 4,
61 .max_signal = 4,
62 .muxval = 0,
63 .periph_buses = PL08X_AHB1,
64 }, {
65 .bus_id = "uart1_tx",
66 .min_signal = 5,
67 .max_signal = 5,
68 .muxval = 0,
69 .periph_buses = PL08X_AHB1,
70 }, {
71 .bus_id = "ssp2_rx",
72 .min_signal = 6,
73 .max_signal = 6,
74 .muxval = 0,
75 .periph_buses = PL08X_AHB2,
76 }, {
77 .bus_id = "ssp2_tx",
78 .min_signal = 7,
79 .max_signal = 7,
80 .muxval = 0,
81 .periph_buses = PL08X_AHB2,
82 }, {
83 .bus_id = "ssp0_rx",
84 .min_signal = 8,
85 .max_signal = 8,
86 .muxval = 0,
87 .periph_buses = PL08X_AHB1,
88 }, {
89 .bus_id = "ssp0_tx",
90 .min_signal = 9,
91 .max_signal = 9,
92 .muxval = 0,
93 .periph_buses = PL08X_AHB1,
94 }, {
95 .bus_id = "i2c_rx",
96 .min_signal = 10,
97 .max_signal = 10,
98 .muxval = 0,
99 .periph_buses = PL08X_AHB1,
100 }, {
101 .bus_id = "i2c_tx",
102 .min_signal = 11,
103 .max_signal = 11,
104 .muxval = 0,
105 .periph_buses = PL08X_AHB1,
106 }, {
107 .bus_id = "irda",
108 .min_signal = 12,
109 .max_signal = 12,
110 .muxval = 0,
111 .periph_buses = PL08X_AHB1,
112 }, {
113 .bus_id = "adc",
114 .min_signal = 13,
115 .max_signal = 13,
116 .muxval = 0,
117 .periph_buses = PL08X_AHB2,
118 }, {
119 .bus_id = "to_jpeg",
120 .min_signal = 14,
121 .max_signal = 14,
122 .muxval = 0,
123 .periph_buses = PL08X_AHB1,
124 }, {
125 .bus_id = "from_jpeg",
126 .min_signal = 15,
127 .max_signal = 15,
128 .muxval = 0,
129 .periph_buses = PL08X_AHB1,
130 }, {
131 .bus_id = "ras0_rx",
132 .min_signal = 0,
133 .max_signal = 0,
134 .muxval = 1,
135 .periph_buses = PL08X_AHB1,
136 }, {
137 .bus_id = "ras0_tx",
138 .min_signal = 1,
139 .max_signal = 1,
140 .muxval = 1,
141 .periph_buses = PL08X_AHB1,
142 }, {
143 .bus_id = "ras1_rx",
144 .min_signal = 2,
145 .max_signal = 2,
146 .muxval = 1,
147 .periph_buses = PL08X_AHB1,
148 }, {
149 .bus_id = "ras1_tx",
150 .min_signal = 3,
151 .max_signal = 3,
152 .muxval = 1,
153 .periph_buses = PL08X_AHB1,
154 }, {
155 .bus_id = "ras2_rx",
156 .min_signal = 4,
157 .max_signal = 4,
158 .muxval = 1,
159 .periph_buses = PL08X_AHB1,
160 }, {
161 .bus_id = "ras2_tx",
162 .min_signal = 5,
163 .max_signal = 5,
164 .muxval = 1,
165 .periph_buses = PL08X_AHB1,
166 }, {
167 .bus_id = "ras3_rx",
168 .min_signal = 6,
169 .max_signal = 6,
170 .muxval = 1,
171 .periph_buses = PL08X_AHB1,
172 }, {
173 .bus_id = "ras3_tx",
174 .min_signal = 7,
175 .max_signal = 7,
176 .muxval = 1,
177 .periph_buses = PL08X_AHB1,
178 }, {
179 .bus_id = "ras4_rx",
180 .min_signal = 8,
181 .max_signal = 8,
182 .muxval = 1,
183 .periph_buses = PL08X_AHB1,
184 }, {
185 .bus_id = "ras4_tx",
186 .min_signal = 9,
187 .max_signal = 9,
188 .muxval = 1,
189 .periph_buses = PL08X_AHB1,
190 }, {
191 .bus_id = "ras5_rx",
192 .min_signal = 10,
193 .max_signal = 10,
194 .muxval = 1,
195 .periph_buses = PL08X_AHB1,
196 }, {
197 .bus_id = "ras5_tx",
198 .min_signal = 11,
199 .max_signal = 11,
200 .muxval = 1,
201 .periph_buses = PL08X_AHB1,
202 }, {
203 .bus_id = "ras6_rx",
204 .min_signal = 12,
205 .max_signal = 12,
206 .muxval = 1,
207 .periph_buses = PL08X_AHB1,
208 }, {
209 .bus_id = "ras6_tx",
210 .min_signal = 13,
211 .max_signal = 13,
212 .muxval = 1,
213 .periph_buses = PL08X_AHB1,
214 }, {
215 .bus_id = "ras7_rx",
216 .min_signal = 14,
217 .max_signal = 14,
218 .muxval = 1,
219 .periph_buses = PL08X_AHB1,
220 }, {
221 .bus_id = "ras7_tx",
222 .min_signal = 15,
223 .max_signal = 15,
224 .muxval = 1,
225 .periph_buses = PL08X_AHB1,
226 }, {
227 .bus_id = "ext0_rx",
228 .min_signal = 0,
229 .max_signal = 0,
230 .muxval = 2,
231 .periph_buses = PL08X_AHB2,
232 }, {
233 .bus_id = "ext0_tx",
234 .min_signal = 1,
235 .max_signal = 1,
236 .muxval = 2,
237 .periph_buses = PL08X_AHB2,
238 }, {
239 .bus_id = "ext1_rx",
240 .min_signal = 2,
241 .max_signal = 2,
242 .muxval = 2,
243 .periph_buses = PL08X_AHB2,
244 }, {
245 .bus_id = "ext1_tx",
246 .min_signal = 3,
247 .max_signal = 3,
248 .muxval = 2,
249 .periph_buses = PL08X_AHB2,
250 }, {
251 .bus_id = "ext2_rx",
252 .min_signal = 4,
253 .max_signal = 4,
254 .muxval = 2,
255 .periph_buses = PL08X_AHB2,
256 }, {
257 .bus_id = "ext2_tx",
258 .min_signal = 5,
259 .max_signal = 5,
260 .muxval = 2,
261 .periph_buses = PL08X_AHB2,
262 }, {
263 .bus_id = "ext3_rx",
264 .min_signal = 6,
265 .max_signal = 6,
266 .muxval = 2,
267 .periph_buses = PL08X_AHB2,
268 }, {
269 .bus_id = "ext3_tx",
270 .min_signal = 7,
271 .max_signal = 7,
272 .muxval = 2,
273 .periph_buses = PL08X_AHB2,
274 }, {
275 .bus_id = "ext4_rx",
276 .min_signal = 8,
277 .max_signal = 8,
278 .muxval = 2,
279 .periph_buses = PL08X_AHB2,
280 }, {
281 .bus_id = "ext4_tx",
282 .min_signal = 9,
283 .max_signal = 9,
284 .muxval = 2,
285 .periph_buses = PL08X_AHB2,
286 }, {
287 .bus_id = "ext5_rx",
288 .min_signal = 10,
289 .max_signal = 10,
290 .muxval = 2,
291 .periph_buses = PL08X_AHB2,
292 }, {
293 .bus_id = "ext5_tx",
294 .min_signal = 11,
295 .max_signal = 11,
296 .muxval = 2,
297 .periph_buses = PL08X_AHB2,
298 }, {
299 .bus_id = "ext6_rx",
300 .min_signal = 12,
301 .max_signal = 12,
302 .muxval = 2,
303 .periph_buses = PL08X_AHB2,
304 }, {
305 .bus_id = "ext6_tx",
306 .min_signal = 13,
307 .max_signal = 13,
308 .muxval = 2,
309 .periph_buses = PL08X_AHB2,
310 }, {
311 .bus_id = "ext7_rx",
312 .min_signal = 14,
313 .max_signal = 14,
314 .muxval = 2,
315 .periph_buses = PL08X_AHB2,
316 }, {
317 .bus_id = "ext7_tx",
318 .min_signal = 15,
319 .max_signal = 15,
320 .muxval = 2,
321 .periph_buses = PL08X_AHB2,
322 },
323 };
324
325 struct pl08x_platform_data pl080_plat_data = {
326 .memcpy_channel = {
327 .bus_id = "memcpy",
328 .cctl_memcpy =
329 (PL080_BSIZE_16 << PL080_CONTROL_SB_SIZE_SHIFT | \
330 PL080_BSIZE_16 << PL080_CONTROL_DB_SIZE_SHIFT | \
331 PL080_WIDTH_32BIT << PL080_CONTROL_SWIDTH_SHIFT | \
332 PL080_WIDTH_32BIT << PL080_CONTROL_DWIDTH_SHIFT | \
333 PL080_CONTROL_PROT_BUFF | PL080_CONTROL_PROT_CACHE | \
334 PL080_CONTROL_PROT_SYS),
335 },
336 .lli_buses = PL08X_AHB1,
337 .mem_buses = PL08X_AHB1,
338 .get_signal = pl080_get_signal,
339 .put_signal = pl080_put_signal,
340 .slave_channels = spear600_dma_info,
341 .num_slave_channels = ARRAY_SIZE(spear600_dma_info),
342 };
343
344 /*
345 * Following will create 16MB static virtual/physical mappings
346 * PHYSICAL VIRTUAL
347 * 0xF0000000 0xF0000000
348 * 0xF1000000 0xF1000000
349 * 0xD0000000 0xFD000000
350 * 0xFC000000 0xFC000000
351 */
352 struct map_desc spear6xx_io_desc[] __initdata = {
353 {
354 .virtual = VA_SPEAR6XX_ML_CPU_BASE,
355 .pfn = __phys_to_pfn(SPEAR6XX_ML_CPU_BASE),
356 .length = 2 * SZ_16M,
357 .type = MT_DEVICE
358 }, {
359 .virtual = VA_SPEAR6XX_ICM1_BASE,
360 .pfn = __phys_to_pfn(SPEAR6XX_ICM1_BASE),
361 .length = SZ_16M,
362 .type = MT_DEVICE
363 }, {
364 .virtual = VA_SPEAR6XX_ICM3_SMI_CTRL_BASE,
365 .pfn = __phys_to_pfn(SPEAR6XX_ICM3_SMI_CTRL_BASE),
366 .length = SZ_16M,
367 .type = MT_DEVICE
368 },
369 };
370
371 /* This will create static memory mapping for selected devices */
372 void __init spear6xx_map_io(void)
373 {
374 iotable_init(spear6xx_io_desc, ARRAY_SIZE(spear6xx_io_desc));
375 }
376
377 static void __init spear6xx_timer_init(void)
378 {
379 char pclk_name[] = "pll3_clk";
380 struct clk *gpt_clk, *pclk;
381
382 spear6xx_clk_init();
383
384 /* get the system timer clock */
385 gpt_clk = clk_get_sys("gpt0", NULL);
386 if (IS_ERR(gpt_clk)) {
387 pr_err("%s:couldn't get clk for gpt\n", __func__);
388 BUG();
389 }
390
391 /* get the suitable parent clock for timer*/
392 pclk = clk_get(NULL, pclk_name);
393 if (IS_ERR(pclk)) {
394 pr_err("%s:couldn't get %s as parent for gpt\n",
395 __func__, pclk_name);
396 BUG();
397 }
398
399 clk_set_parent(gpt_clk, pclk);
400 clk_put(gpt_clk);
401 clk_put(pclk);
402
403 spear_setup_of_timer();
404 }
405
406 struct sys_timer spear6xx_timer = {
407 .init = spear6xx_timer_init,
408 };
409
410 /* Add auxdata to pass platform data */
411 struct of_dev_auxdata spear6xx_auxdata_lookup[] __initdata = {
412 OF_DEV_AUXDATA("arm,pl080", SPEAR6XX_ICM3_DMA_BASE, NULL,
413 &pl080_plat_data),
414 {}
415 };
416
417 static void __init spear600_dt_init(void)
418 {
419 of_platform_populate(NULL, of_default_bus_match_table,
420 spear6xx_auxdata_lookup, NULL);
421 }
422
423 static const char *spear600_dt_board_compat[] = {
424 "st,spear600",
425 NULL
426 };
427
428 static const struct of_device_id vic_of_match[] __initconst = {
429 { .compatible = "arm,pl190-vic", .data = vic_of_init, },
430 { /* Sentinel */ }
431 };
432
433 static void __init spear6xx_dt_init_irq(void)
434 {
435 of_irq_init(vic_of_match);
436 }
437
438 DT_MACHINE_START(SPEAR600_DT, "ST SPEAr600 (Flattened Device Tree)")
439 .map_io = spear6xx_map_io,
440 .init_irq = spear6xx_dt_init_irq,
441 .handle_irq = vic_handle_irq,
442 .timer = &spear6xx_timer,
443 .init_machine = spear600_dt_init,
444 .restart = spear_restart,
445 .dt_compat = spear600_dt_board_compat,
446 MACHINE_END
Linux with added FPC-III support