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1/*
2 * arch/arm/mach-ep93xx/edb93xx.c
3 * Cirrus Logic EDB93xx Development Board support.
4 *
5 * EDB93XX, EDB9301, EDB9307A
6 * Copyright (C) 2008-2009 H Hartley Sweeten <hsweeten@visionengravers.com>
7 *
8 * EDB9302
9 * Copyright (C) 2006 George Kashperko <george@chas.com.ua>
10 *
11 * EDB9302A, EDB9315, EDB9315A
12 * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
13 *
14 * EDB9307
15 * Copyright (C) 2007 Herbert Valerio Riedel <hvr@gnu.org>
16 *
17 * EDB9312
18 * Copyright (C) 2006 Infosys Technologies Limited
19 * Toufeeq Hussain <toufeeq_hussain@infosys.com>
20 *
21 * This program is free software; you can redistribute it and/or modify
22 * it under the terms of the GNU General Public License as published by
23 * the Free Software Foundation; either version 2 of the License, or (at
24 * your option) any later version.
25 */
26
27#include <linux/kernel.h>
28#include <linux/init.h>
a2bd40d2 29#include <linux/platform_device.h>
6531a991
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30#include <linux/gpio.h>
31#include <linux/i2c.h>
32#include <linux/i2c-gpio.h>
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33#include <linux/spi/spi.h>
34
35#include <sound/cs4271.h>
583ddafe 36
a2bd40d2 37#include <mach/hardware.h>
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38#include <linux/platform_data/video-ep93xx.h>
39#include <linux/platform_data/spi-ep93xx.h>
bd5f12a2 40#include <mach/gpio-ep93xx.h>
583ddafe 41
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42#include <asm/mach-types.h>
43#include <asm/mach/arch.h>
44
258249ec 45#include "soc.h"
583ddafe 46
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47static void __init edb93xx_register_flash(void)
48{
49 if (machine_is_edb9307() || machine_is_edb9312() ||
50 machine_is_edb9315()) {
16bcf78f 51 ep93xx_register_flash(4, EP93XX_CS6_PHYS_BASE, SZ_32M);
a2bd40d2 52 } else {
16bcf78f 53 ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_16M);
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54 }
55}
56
b370e082 57static struct ep93xx_eth_data __initdata edb93xx_eth_data = {
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58 .phy_id = 1,
59};
60
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61
62/*************************************************************************
63 * EDB93xx i2c peripheral handling
64 *************************************************************************/
b370e082 65static struct i2c_gpio_platform_data __initdata edb93xx_i2c_gpio_data = {
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66 .sda_pin = EP93XX_GPIO_LINE_EEDAT,
67 .sda_is_open_drain = 0,
68 .scl_pin = EP93XX_GPIO_LINE_EECLK,
69 .scl_is_open_drain = 0,
70 .udelay = 0, /* default to 100 kHz */
71 .timeout = 0, /* default to 100 ms */
72};
73
74static struct i2c_board_info __initdata edb93xxa_i2c_board_info[] = {
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75 {
76 I2C_BOARD_INFO("isl1208", 0x6f),
77 },
78};
79
6531a991 80static struct i2c_board_info __initdata edb93xx_i2c_board_info[] = {
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81 {
82 I2C_BOARD_INFO("ds1337", 0x68),
83 },
84};
85
86static void __init edb93xx_register_i2c(void)
87{
88 if (machine_is_edb9302a() || machine_is_edb9307a() ||
89 machine_is_edb9315a()) {
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90 ep93xx_register_i2c(&edb93xx_i2c_gpio_data,
91 edb93xxa_i2c_board_info,
92 ARRAY_SIZE(edb93xxa_i2c_board_info));
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93 } else if (machine_is_edb9302() || machine_is_edb9307()
94 || machine_is_edb9312() || machine_is_edb9315()) {
3d977c01 95 ep93xx_register_i2c(&edb93xx_i2c_gpio_data,
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96 edb93xx_i2c_board_info,
97 ARRAY_SIZE(edb93xx_i2c_board_info));
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98 }
99}
100
1fbd972a 101
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102/*************************************************************************
103 * EDB93xx SPI peripheral handling
104 *************************************************************************/
105static struct cs4271_platform_data edb93xx_cs4271_data = {
106 .gpio_nreset = -EINVAL, /* filled in later */
107};
108
109static int edb93xx_cs4271_hw_setup(struct spi_device *spi)
110{
111 return gpio_request_one(EP93XX_GPIO_LINE_EGPIO6,
112 GPIOF_OUT_INIT_HIGH, spi->modalias);
113}
114
115static void edb93xx_cs4271_hw_cleanup(struct spi_device *spi)
116{
117 gpio_free(EP93XX_GPIO_LINE_EGPIO6);
118}
119
120static void edb93xx_cs4271_hw_cs_control(struct spi_device *spi, int value)
121{
122 gpio_set_value(EP93XX_GPIO_LINE_EGPIO6, value);
123}
124
125static struct ep93xx_spi_chip_ops edb93xx_cs4271_hw = {
126 .setup = edb93xx_cs4271_hw_setup,
127 .cleanup = edb93xx_cs4271_hw_cleanup,
128 .cs_control = edb93xx_cs4271_hw_cs_control,
129};
130
131static struct spi_board_info edb93xx_spi_board_info[] __initdata = {
132 {
133 .modalias = "cs4271",
134 .platform_data = &edb93xx_cs4271_data,
135 .controller_data = &edb93xx_cs4271_hw,
136 .max_speed_hz = 6000000,
137 .bus_num = 0,
138 .chip_select = 0,
139 .mode = SPI_MODE_3,
140 },
141};
142
143static struct ep93xx_spi_info edb93xx_spi_info __initdata = {
144 .num_chipselect = ARRAY_SIZE(edb93xx_spi_board_info),
145};
146
147static void __init edb93xx_register_spi(void)
148{
149 if (machine_is_edb9301() || machine_is_edb9302())
150 edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO1;
151 else if (machine_is_edb9302a() || machine_is_edb9307a())
152 edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_H(2);
153 else if (machine_is_edb9315a())
154 edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO14;
155
156 ep93xx_register_spi(&edb93xx_spi_info, edb93xx_spi_board_info,
157 ARRAY_SIZE(edb93xx_spi_board_info));
158}
159
160
161/*************************************************************************
162 * EDB93xx I2S
163 *************************************************************************/
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164static struct platform_device edb93xx_audio_device = {
165 .name = "edb93xx-audio",
166 .id = -1,
167};
168
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169static int __init edb93xx_has_audio(void)
170{
171 return (machine_is_edb9301() || machine_is_edb9302() ||
172 machine_is_edb9302a() || machine_is_edb9307a() ||
173 machine_is_edb9315a());
174}
175
176static void __init edb93xx_register_i2s(void)
177{
178 if (edb93xx_has_audio()) {
179 ep93xx_register_i2s();
075b20b0 180 platform_device_register(&edb93xx_audio_device);
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181 }
182}
183
184
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185/*************************************************************************
186 * EDB93xx pwm
187 *************************************************************************/
188static void __init edb93xx_register_pwm(void)
189{
190 if (machine_is_edb9301() ||
191 machine_is_edb9302() || machine_is_edb9302a()) {
192 /* EP9301 and EP9302 only have pwm.1 (EGPIO14) */
193 ep93xx_register_pwm(0, 1);
194 } else if (machine_is_edb9307() || machine_is_edb9307a()) {
195 /* EP9307 only has pwm.0 (PWMOUT) */
196 ep93xx_register_pwm(1, 0);
197 } else {
198 /* EP9312 and EP9315 have both */
199 ep93xx_register_pwm(1, 1);
200 }
201}
202
203
13055192
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204/*************************************************************************
205 * EDB93xx framebuffer
206 *************************************************************************/
207static struct ep93xxfb_mach_info __initdata edb93xxfb_info = {
13055192
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208 .flags = 0,
209};
210
211static int __init edb93xx_has_fb(void)
212{
213 /* These platforms have an ep93xx with video capability */
214 return machine_is_edb9307() || machine_is_edb9307a() ||
215 machine_is_edb9312() || machine_is_edb9315() ||
216 machine_is_edb9315a();
217}
218
219static void __init edb93xx_register_fb(void)
220{
221 if (!edb93xx_has_fb())
222 return;
223
224 if (machine_is_edb9307a() || machine_is_edb9315a())
225 edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN0;
226 else
227 edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN3;
228
229 ep93xx_register_fb(&edb93xxfb_info);
230}
231
232
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233/*************************************************************************
234 * EDB93xx IDE
235 *************************************************************************/
236static int __init edb93xx_has_ide(void)
237{
238 /*
239 * Although EDB9312 and EDB9315 do have IDE capability, they have
240 * INTRQ line wired as pull-up, which makes using IDE interface
241 * problematic.
242 */
243 return machine_is_edb9312() || machine_is_edb9315() ||
244 machine_is_edb9315a();
245}
246
247static void __init edb93xx_register_ide(void)
248{
249 if (!edb93xx_has_ide())
250 return;
251
252 ep93xx_register_ide();
253}
254
255
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256static void __init edb93xx_init_machine(void)
257{
258 ep93xx_init_devices();
259 edb93xx_register_flash();
260 ep93xx_register_eth(&edb93xx_eth_data, 1);
261 edb93xx_register_i2c();
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262 edb93xx_register_spi();
263 edb93xx_register_i2s();
1fbd972a 264 edb93xx_register_pwm();
13055192 265 edb93xx_register_fb();
762be297 266 edb93xx_register_ide();
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267}
268
269
270#ifdef CONFIG_MACH_EDB9301
271MACHINE_START(EDB9301, "Cirrus Logic EDB9301 Evaluation Board")
272 /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
e562cf17 273 .atag_offset = 0x100,
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274 .map_io = ep93xx_map_io,
275 .init_irq = ep93xx_init_irq,
6bb27d73 276 .init_time = ep93xx_timer_init,
a2bd40d2 277 .init_machine = edb93xx_init_machine,
c914283f 278 .init_late = ep93xx_init_late,
3275166e 279 .restart = ep93xx_restart,
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280MACHINE_END
281#endif
282
283#ifdef CONFIG_MACH_EDB9302
284MACHINE_START(EDB9302, "Cirrus Logic EDB9302 Evaluation Board")
285 /* Maintainer: George Kashperko <george@chas.com.ua> */
e562cf17 286 .atag_offset = 0x100,
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287 .map_io = ep93xx_map_io,
288 .init_irq = ep93xx_init_irq,
6bb27d73 289 .init_time = ep93xx_timer_init,
a2bd40d2 290 .init_machine = edb93xx_init_machine,
c914283f 291 .init_late = ep93xx_init_late,
3275166e 292 .restart = ep93xx_restart,
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293MACHINE_END
294#endif
295
296#ifdef CONFIG_MACH_EDB9302A
297MACHINE_START(EDB9302A, "Cirrus Logic EDB9302A Evaluation Board")
298 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
e562cf17 299 .atag_offset = 0x100,
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300 .map_io = ep93xx_map_io,
301 .init_irq = ep93xx_init_irq,
6bb27d73 302 .init_time = ep93xx_timer_init,
a2bd40d2 303 .init_machine = edb93xx_init_machine,
c914283f 304 .init_late = ep93xx_init_late,
3275166e 305 .restart = ep93xx_restart,
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306MACHINE_END
307#endif
308
309#ifdef CONFIG_MACH_EDB9307
310MACHINE_START(EDB9307, "Cirrus Logic EDB9307 Evaluation Board")
311 /* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
e562cf17 312 .atag_offset = 0x100,
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313 .map_io = ep93xx_map_io,
314 .init_irq = ep93xx_init_irq,
6bb27d73 315 .init_time = ep93xx_timer_init,
a2bd40d2 316 .init_machine = edb93xx_init_machine,
c914283f 317 .init_late = ep93xx_init_late,
3275166e 318 .restart = ep93xx_restart,
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319MACHINE_END
320#endif
321
322#ifdef CONFIG_MACH_EDB9307A
323MACHINE_START(EDB9307A, "Cirrus Logic EDB9307A Evaluation Board")
324 /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
e562cf17 325 .atag_offset = 0x100,
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326 .map_io = ep93xx_map_io,
327 .init_irq = ep93xx_init_irq,
6bb27d73 328 .init_time = ep93xx_timer_init,
a2bd40d2 329 .init_machine = edb93xx_init_machine,
c914283f 330 .init_late = ep93xx_init_late,
3275166e 331 .restart = ep93xx_restart,
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332MACHINE_END
333#endif
334
335#ifdef CONFIG_MACH_EDB9312
336MACHINE_START(EDB9312, "Cirrus Logic EDB9312 Evaluation Board")
337 /* Maintainer: Toufeeq Hussain <toufeeq_hussain@infosys.com> */
e562cf17 338 .atag_offset = 0x100,
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339 .map_io = ep93xx_map_io,
340 .init_irq = ep93xx_init_irq,
6bb27d73 341 .init_time = ep93xx_timer_init,
a2bd40d2 342 .init_machine = edb93xx_init_machine,
c914283f 343 .init_late = ep93xx_init_late,
3275166e 344 .restart = ep93xx_restart,
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345MACHINE_END
346#endif
347
348#ifdef CONFIG_MACH_EDB9315
349MACHINE_START(EDB9315, "Cirrus Logic EDB9315 Evaluation Board")
350 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
e562cf17 351 .atag_offset = 0x100,
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352 .map_io = ep93xx_map_io,
353 .init_irq = ep93xx_init_irq,
6bb27d73 354 .init_time = ep93xx_timer_init,
a2bd40d2 355 .init_machine = edb93xx_init_machine,
c914283f 356 .init_late = ep93xx_init_late,
3275166e 357 .restart = ep93xx_restart,
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358MACHINE_END
359#endif
360
361#ifdef CONFIG_MACH_EDB9315A
362MACHINE_START(EDB9315A, "Cirrus Logic EDB9315A Evaluation Board")
363 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
e562cf17 364 .atag_offset = 0x100,
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365 .map_io = ep93xx_map_io,
366 .init_irq = ep93xx_init_irq,
6bb27d73 367 .init_time = ep93xx_timer_init,
a2bd40d2 368 .init_machine = edb93xx_init_machine,
c914283f 369 .init_late = ep93xx_init_late,
3275166e 370 .restart = ep93xx_restart,
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371MACHINE_END
372#endif