1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
|
/*
* R8A7740 processor support
*
* Copyright (C) 2011 Renesas Solutions Corp.
* Copyright (C) 2011 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <linux/delay.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/serial_sci.h>
#include <linux/sh_timer.h>
#include <mach/r8a7740.h>
#include <mach/common.h>
#include <asm/mach-types.h>
#include <asm/mach/map.h>
#include <asm/mach/arch.h>
static struct map_desc r8a7740_io_desc[] __initdata = {
/*
* for CPGA/INTC/PFC
* 0xe6000000-0xefffffff -> 0xe6000000-0xefffffff
*/
{
.virtual = 0xe6000000,
.pfn = __phys_to_pfn(0xe6000000),
.length = 160 << 20,
.type = MT_DEVICE_NONSHARED
},
#ifdef CONFIG_CACHE_L2X0
/*
* for l2x0_init()
* 0xf0100000-0xf0101000 -> 0xf0002000-0xf0003000
*/
{
.virtual = 0xf0002000,
.pfn = __phys_to_pfn(0xf0100000),
.length = PAGE_SIZE,
.type = MT_DEVICE_NONSHARED
},
#endif
};
void __init r8a7740_map_io(void)
{
iotable_init(r8a7740_io_desc, ARRAY_SIZE(r8a7740_io_desc));
}
/* SCIFA0 */
static struct plat_sci_port scif0_platform_data = {
.mapbase = 0xe6c40000,
.flags = UPF_BOOT_AUTOCONF,
.scscr = SCSCR_RE | SCSCR_TE,
.scbrr_algo_id = SCBRR_ALGO_4,
.type = PORT_SCIFA,
.irqs = SCIx_IRQ_MUXED(evt2irq(0x0c00)),
};
static struct platform_device scif0_device = {
.name = "sh-sci",
.id = 0,
.dev = {
.platform_data = &scif0_platform_data,
},
};
/* SCIFA1 */
static struct plat_sci_port scif1_platform_data = {
.mapbase = 0xe6c50000,
.flags = UPF_BOOT_AUTOCONF,
.scscr = SCSCR_RE | SCSCR_TE,
.scbrr_algo_id = SCBRR_ALGO_4,
.type = PORT_SCIFA,
.irqs = SCIx_IRQ_MUXED(evt2irq(0x0c20)),
};
static struct platform_device scif1_device = {
.name = "sh-sci",
.id = 1,
.dev = {
.platform_data = &scif1_platform_data,
},
};
/* SCIFA2 */
static struct plat_sci_port scif2_platform_data = {
.mapbase = 0xe6c60000,
.flags = UPF_BOOT_AUTOCONF,
.scscr = SCSCR_RE | SCSCR_TE,
.scbrr_algo_id = SCBRR_ALGO_4,
.type = PORT_SCIFA,
.irqs = SCIx_IRQ_MUXED(evt2irq(0x0c40)),
};
static struct platform_device scif2_device = {
.name = "sh-sci",
.id = 2,
.dev = {
.platform_data = &scif2_platform_data,
},
};
/* SCIFA3 */
static struct plat_sci_port scif3_platform_data = {
.mapbase = 0xe6c70000,
.flags = UPF_BOOT_AUTOCONF,
.scscr = SCSCR_RE | SCSCR_TE,
.scbrr_algo_id = SCBRR_ALGO_4,
.type = PORT_SCIFA,
.irqs = SCIx_IRQ_MUXED(evt2irq(0x0c60)),
};
static struct platform_device scif3_device = {
.name = "sh-sci",
.id = 3,
.dev = {
.platform_data = &scif3_platform_data,
},
};
/* SCIFA4 */
static struct plat_sci_port scif4_platform_data = {
.mapbase = 0xe6c80000,
.flags = UPF_BOOT_AUTOCONF,
.scscr = SCSCR_RE | SCSCR_TE,
.scbrr_algo_id = SCBRR_ALGO_4,
.type = PORT_SCIFA,
.irqs = SCIx_IRQ_MUXED(evt2irq(0x0d20)),
};
static struct platform_device scif4_device = {
.name = "sh-sci",
.id = 4,
.dev = {
.platform_data = &scif4_platform_data,
},
};
/* SCIFA5 */
static struct plat_sci_port scif5_platform_data = {
.mapbase = 0xe6cb0000,
.flags = UPF_BOOT_AUTOCONF,
.scscr = SCSCR_RE | SCSCR_TE,
.scbrr_algo_id = SCBRR_ALGO_4,
.type = PORT_SCIFA,
.irqs = SCIx_IRQ_MUXED(evt2irq(0x0d40)),
};
static struct platform_device scif5_device = {
.name = "sh-sci",
.id = 5,
.dev = {
.platform_data = &scif5_platform_data,
},
};
/* SCIFA6 */
static struct plat_sci_port scif6_platform_data = {
.mapbase = 0xe6cc0000,
.flags = UPF_BOOT_AUTOCONF,
.scscr = SCSCR_RE | SCSCR_TE,
.scbrr_algo_id = SCBRR_ALGO_4,
.type = PORT_SCIFA,
.irqs = SCIx_IRQ_MUXED(evt2irq(0x04c0)),
};
static struct platform_device scif6_device = {
.name = "sh-sci",
.id = 6,
.dev = {
.platform_data = &scif6_platform_data,
},
};
/* SCIFA7 */
static struct plat_sci_port scif7_platform_data = {
.mapbase = 0xe6cd0000,
.flags = UPF_BOOT_AUTOCONF,
.scscr = SCSCR_RE | SCSCR_TE,
.scbrr_algo_id = SCBRR_ALGO_4,
.type = PORT_SCIFA,
.irqs = SCIx_IRQ_MUXED(evt2irq(0x04e0)),
};
static struct platform_device scif7_device = {
.name = "sh-sci",
.id = 7,
.dev = {
.platform_data = &scif7_platform_data,
},
};
/* SCIFB */
static struct plat_sci_port scifb_platform_data = {
.mapbase = 0xe6c30000,
.flags = UPF_BOOT_AUTOCONF,
.scscr = SCSCR_RE | SCSCR_TE,
.scbrr_algo_id = SCBRR_ALGO_4,
.type = PORT_SCIFB,
.irqs = SCIx_IRQ_MUXED(evt2irq(0x0d60)),
};
static struct platform_device scifb_device = {
.name = "sh-sci",
.id = 8,
.dev = {
.platform_data = &scifb_platform_data,
},
};
/* CMT */
static struct sh_timer_config cmt10_platform_data = {
.name = "CMT10",
.channel_offset = 0x10,
.timer_bit = 0,
.clockevent_rating = 125,
.clocksource_rating = 125,
};
static struct resource cmt10_resources[] = {
[0] = {
.name = "CMT10",
.start = 0xe6138010,
.end = 0xe613801b,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = evt2irq(0x0b00),
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device cmt10_device = {
.name = "sh_cmt",
.id = 10,
.dev = {
.platform_data = &cmt10_platform_data,
},
.resource = cmt10_resources,
.num_resources = ARRAY_SIZE(cmt10_resources),
};
static struct platform_device *r8a7740_early_devices[] __initdata = {
&scif0_device,
&scif1_device,
&scif2_device,
&scif3_device,
&scif4_device,
&scif5_device,
&scif6_device,
&scif7_device,
&scifb_device,
&cmt10_device,
};
/* I2C */
static struct resource i2c0_resources[] = {
[0] = {
.name = "IIC0",
.start = 0xfff20000,
.end = 0xfff20425 - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = intcs_evt2irq(0xe00),
.end = intcs_evt2irq(0xe60),
.flags = IORESOURCE_IRQ,
},
};
static struct resource i2c1_resources[] = {
[0] = {
.name = "IIC1",
.start = 0xe6c20000,
.end = 0xe6c20425 - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = evt2irq(0x780), /* IIC1_ALI1 */
.end = evt2irq(0x7e0), /* IIC1_DTEI1 */
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device i2c0_device = {
.name = "i2c-sh_mobile",
.id = 0,
.resource = i2c0_resources,
.num_resources = ARRAY_SIZE(i2c0_resources),
};
static struct platform_device i2c1_device = {
.name = "i2c-sh_mobile",
.id = 1,
.resource = i2c1_resources,
.num_resources = ARRAY_SIZE(i2c1_resources),
};
static struct platform_device *r8a7740_late_devices[] __initdata = {
&i2c0_device,
&i2c1_device,
};
#define ICCR 0x0004
#define ICSTART 0x0070
#define i2c_read(reg, offset) ioread8(reg + offset)
#define i2c_write(reg, offset, data) iowrite8(data, reg + offset)
/*
* r8a7740 chip has lasting errata on I2C I/O pad reset.
* this is work-around for it.
*/
static void r8a7740_i2c_workaround(struct platform_device *pdev)
{
struct resource *res;
void __iomem *reg;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (unlikely(!res)) {
pr_err("r8a7740 i2c workaround fail (cannot find resource)\n");
return;
}
reg = ioremap(res->start, resource_size(res));
if (unlikely(!reg)) {
pr_err("r8a7740 i2c workaround fail (cannot map IO)\n");
return;
}
i2c_write(reg, ICCR, i2c_read(reg, ICCR) | 0x80);
i2c_read(reg, ICCR); /* dummy read */
i2c_write(reg, ICSTART, i2c_read(reg, ICSTART) | 0x10);
i2c_read(reg, ICSTART); /* dummy read */
mdelay(100);
i2c_write(reg, ICCR, 0x01);
i2c_read(reg, ICCR);
i2c_write(reg, ICSTART, 0x00);
i2c_read(reg, ICSTART);
i2c_write(reg, ICCR, 0x10);
mdelay(100);
i2c_write(reg, ICCR, 0x00);
mdelay(100);
i2c_write(reg, ICCR, 0x10);
mdelay(100);
iounmap(reg);
}
void __init r8a7740_add_standard_devices(void)
{
/* I2C work-around */
r8a7740_i2c_workaround(&i2c0_device);
r8a7740_i2c_workaround(&i2c1_device);
platform_add_devices(r8a7740_early_devices,
ARRAY_SIZE(r8a7740_early_devices));
platform_add_devices(r8a7740_late_devices,
ARRAY_SIZE(r8a7740_late_devices));
}
void __init r8a7740_add_early_devices(void)
{
early_platform_add_devices(r8a7740_early_devices,
ARRAY_SIZE(r8a7740_early_devices));
/* setup early console here as well */
shmobile_setup_console();
}
|
