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>
29 #include <linux/platform_device.h>
30 #include <linux/gpio.h>
31 #include <linux/i2c.h>
32 #include <linux/i2c-gpio.h>
33 #include <linux/spi/spi.h>
34
35 #include <sound/cs4271.h>
36
37 #include <mach/hardware.h>
38 #include <mach/fb.h>
39 #include <mach/ep93xx_spi.h>
40 #include <mach/gpio-ep93xx.h>
41
42 #include <asm/hardware/vic.h>
43 #include <asm/mach-types.h>
44 #include <asm/mach/arch.h>
45
46 #include "soc.h"
47
edb93xx_register_flash(void)48 static void __init edb93xx_register_flash(void)
49 {
50 if (machine_is_edb9307() || machine_is_edb9312() ||
51 machine_is_edb9315()) {
52 ep93xx_register_flash(4, EP93XX_CS6_PHYS_BASE, SZ_32M);
53 } else {
54 ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_16M);
55 }
56 }
57
58 static struct ep93xx_eth_data __initdata edb93xx_eth_data = {
59 .phy_id = 1,
60 };
61
62
63 /*************************************************************************
64 * EDB93xx i2c peripheral handling
65 *************************************************************************/
66 static struct i2c_gpio_platform_data __initdata edb93xx_i2c_gpio_data = {
67 .sda_pin = EP93XX_GPIO_LINE_EEDAT,
68 .sda_is_open_drain = 0,
69 .scl_pin = EP93XX_GPIO_LINE_EECLK,
70 .scl_is_open_drain = 0,
71 .udelay = 0, /* default to 100 kHz */
72 .timeout = 0, /* default to 100 ms */
73 };
74
75 static struct i2c_board_info __initdata edb93xxa_i2c_board_info[] = {
76 {
77 I2C_BOARD_INFO("isl1208", 0x6f),
78 },
79 };
80
81 static struct i2c_board_info __initdata edb93xx_i2c_board_info[] = {
82 {
83 I2C_BOARD_INFO("ds1337", 0x68),
84 },
85 };
86
edb93xx_register_i2c(void)87 static void __init edb93xx_register_i2c(void)
88 {
89 if (machine_is_edb9302a() || machine_is_edb9307a() ||
90 machine_is_edb9315a()) {
91 ep93xx_register_i2c(&edb93xx_i2c_gpio_data,
92 edb93xxa_i2c_board_info,
93 ARRAY_SIZE(edb93xxa_i2c_board_info));
94 } else if (machine_is_edb9307() || machine_is_edb9312() ||
95 machine_is_edb9315()) {
96 ep93xx_register_i2c(&edb93xx_i2c_gpio_data,
97 edb93xx_i2c_board_info,
98 ARRAY_SIZE(edb93xx_i2c_board_info));
99 }
100 }
101
102
103 /*************************************************************************
104 * EDB93xx SPI peripheral handling
105 *************************************************************************/
106 static struct cs4271_platform_data edb93xx_cs4271_data = {
107 .gpio_nreset = -EINVAL, /* filled in later */
108 };
109
edb93xx_cs4271_hw_setup(struct spi_device * spi)110 static int edb93xx_cs4271_hw_setup(struct spi_device *spi)
111 {
112 return gpio_request_one(EP93XX_GPIO_LINE_EGPIO6,
113 GPIOF_OUT_INIT_HIGH, spi->modalias);
114 }
115
edb93xx_cs4271_hw_cleanup(struct spi_device * spi)116 static void edb93xx_cs4271_hw_cleanup(struct spi_device *spi)
117 {
118 gpio_free(EP93XX_GPIO_LINE_EGPIO6);
119 }
120
edb93xx_cs4271_hw_cs_control(struct spi_device * spi,int value)121 static void edb93xx_cs4271_hw_cs_control(struct spi_device *spi, int value)
122 {
123 gpio_set_value(EP93XX_GPIO_LINE_EGPIO6, value);
124 }
125
126 static struct ep93xx_spi_chip_ops edb93xx_cs4271_hw = {
127 .setup = edb93xx_cs4271_hw_setup,
128 .cleanup = edb93xx_cs4271_hw_cleanup,
129 .cs_control = edb93xx_cs4271_hw_cs_control,
130 };
131
132 static struct spi_board_info edb93xx_spi_board_info[] __initdata = {
133 {
134 .modalias = "cs4271",
135 .platform_data = &edb93xx_cs4271_data,
136 .controller_data = &edb93xx_cs4271_hw,
137 .max_speed_hz = 6000000,
138 .bus_num = 0,
139 .chip_select = 0,
140 .mode = SPI_MODE_3,
141 },
142 };
143
144 static struct ep93xx_spi_info edb93xx_spi_info __initdata = {
145 .num_chipselect = ARRAY_SIZE(edb93xx_spi_board_info),
146 };
147
edb93xx_register_spi(void)148 static void __init edb93xx_register_spi(void)
149 {
150 if (machine_is_edb9301() || machine_is_edb9302())
151 edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO1;
152 else if (machine_is_edb9302a() || machine_is_edb9307a())
153 edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_H(2);
154 else if (machine_is_edb9315a())
155 edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO14;
156
157 ep93xx_register_spi(&edb93xx_spi_info, edb93xx_spi_board_info,
158 ARRAY_SIZE(edb93xx_spi_board_info));
159 }
160
161
162 /*************************************************************************
163 * EDB93xx I2S
164 *************************************************************************/
165 static struct platform_device edb93xx_audio_device = {
166 .name = "edb93xx-audio",
167 .id = -1,
168 };
169
edb93xx_has_audio(void)170 static int __init edb93xx_has_audio(void)
171 {
172 return (machine_is_edb9301() || machine_is_edb9302() ||
173 machine_is_edb9302a() || machine_is_edb9307a() ||
174 machine_is_edb9315a());
175 }
176
edb93xx_register_i2s(void)177 static void __init edb93xx_register_i2s(void)
178 {
179 if (edb93xx_has_audio()) {
180 ep93xx_register_i2s();
181 platform_device_register(&edb93xx_audio_device);
182 }
183 }
184
185
186 /*************************************************************************
187 * EDB93xx pwm
188 *************************************************************************/
edb93xx_register_pwm(void)189 static void __init edb93xx_register_pwm(void)
190 {
191 if (machine_is_edb9301() ||
192 machine_is_edb9302() || machine_is_edb9302a()) {
193 /* EP9301 and EP9302 only have pwm.1 (EGPIO14) */
194 ep93xx_register_pwm(0, 1);
195 } else if (machine_is_edb9307() || machine_is_edb9307a()) {
196 /* EP9307 only has pwm.0 (PWMOUT) */
197 ep93xx_register_pwm(1, 0);
198 } else {
199 /* EP9312 and EP9315 have both */
200 ep93xx_register_pwm(1, 1);
201 }
202 }
203
204
205 /*************************************************************************
206 * EDB93xx framebuffer
207 *************************************************************************/
208 static struct ep93xxfb_mach_info __initdata edb93xxfb_info = {
209 .num_modes = EP93XXFB_USE_MODEDB,
210 .bpp = 16,
211 .flags = 0,
212 };
213
edb93xx_has_fb(void)214 static int __init edb93xx_has_fb(void)
215 {
216 /* These platforms have an ep93xx with video capability */
217 return machine_is_edb9307() || machine_is_edb9307a() ||
218 machine_is_edb9312() || machine_is_edb9315() ||
219 machine_is_edb9315a();
220 }
221
edb93xx_register_fb(void)222 static void __init edb93xx_register_fb(void)
223 {
224 if (!edb93xx_has_fb())
225 return;
226
227 if (machine_is_edb9307a() || machine_is_edb9315a())
228 edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN0;
229 else
230 edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN3;
231
232 ep93xx_register_fb(&edb93xxfb_info);
233 }
234
235
edb93xx_init_machine(void)236 static void __init edb93xx_init_machine(void)
237 {
238 ep93xx_init_devices();
239 edb93xx_register_flash();
240 ep93xx_register_eth(&edb93xx_eth_data, 1);
241 edb93xx_register_i2c();
242 edb93xx_register_spi();
243 edb93xx_register_i2s();
244 edb93xx_register_pwm();
245 edb93xx_register_fb();
246 }
247
248
249 #ifdef CONFIG_MACH_EDB9301
250 MACHINE_START(EDB9301, "Cirrus Logic EDB9301 Evaluation Board")
251 /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
252 .atag_offset = 0x100,
253 .map_io = ep93xx_map_io,
254 .init_irq = ep93xx_init_irq,
255 .handle_irq = vic_handle_irq,
256 .timer = &ep93xx_timer,
257 .init_machine = edb93xx_init_machine,
258 .restart = ep93xx_restart,
259 MACHINE_END
260 #endif
261
262 #ifdef CONFIG_MACH_EDB9302
263 MACHINE_START(EDB9302, "Cirrus Logic EDB9302 Evaluation Board")
264 /* Maintainer: George Kashperko <george@chas.com.ua> */
265 .atag_offset = 0x100,
266 .map_io = ep93xx_map_io,
267 .init_irq = ep93xx_init_irq,
268 .handle_irq = vic_handle_irq,
269 .timer = &ep93xx_timer,
270 .init_machine = edb93xx_init_machine,
271 .restart = ep93xx_restart,
272 MACHINE_END
273 #endif
274
275 #ifdef CONFIG_MACH_EDB9302A
276 MACHINE_START(EDB9302A, "Cirrus Logic EDB9302A Evaluation Board")
277 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
278 .atag_offset = 0x100,
279 .map_io = ep93xx_map_io,
280 .init_irq = ep93xx_init_irq,
281 .handle_irq = vic_handle_irq,
282 .timer = &ep93xx_timer,
283 .init_machine = edb93xx_init_machine,
284 .restart = ep93xx_restart,
285 MACHINE_END
286 #endif
287
288 #ifdef CONFIG_MACH_EDB9307
289 MACHINE_START(EDB9307, "Cirrus Logic EDB9307 Evaluation Board")
290 /* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
291 .atag_offset = 0x100,
292 .map_io = ep93xx_map_io,
293 .init_irq = ep93xx_init_irq,
294 .handle_irq = vic_handle_irq,
295 .timer = &ep93xx_timer,
296 .init_machine = edb93xx_init_machine,
297 .restart = ep93xx_restart,
298 MACHINE_END
299 #endif
300
301 #ifdef CONFIG_MACH_EDB9307A
302 MACHINE_START(EDB9307A, "Cirrus Logic EDB9307A Evaluation Board")
303 /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
304 .atag_offset = 0x100,
305 .map_io = ep93xx_map_io,
306 .init_irq = ep93xx_init_irq,
307 .handle_irq = vic_handle_irq,
308 .timer = &ep93xx_timer,
309 .init_machine = edb93xx_init_machine,
310 .restart = ep93xx_restart,
311 MACHINE_END
312 #endif
313
314 #ifdef CONFIG_MACH_EDB9312
315 MACHINE_START(EDB9312, "Cirrus Logic EDB9312 Evaluation Board")
316 /* Maintainer: Toufeeq Hussain <toufeeq_hussain@infosys.com> */
317 .atag_offset = 0x100,
318 .map_io = ep93xx_map_io,
319 .init_irq = ep93xx_init_irq,
320 .handle_irq = vic_handle_irq,
321 .timer = &ep93xx_timer,
322 .init_machine = edb93xx_init_machine,
323 .restart = ep93xx_restart,
324 MACHINE_END
325 #endif
326
327 #ifdef CONFIG_MACH_EDB9315
328 MACHINE_START(EDB9315, "Cirrus Logic EDB9315 Evaluation Board")
329 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
330 .atag_offset = 0x100,
331 .map_io = ep93xx_map_io,
332 .init_irq = ep93xx_init_irq,
333 .handle_irq = vic_handle_irq,
334 .timer = &ep93xx_timer,
335 .init_machine = edb93xx_init_machine,
336 .restart = ep93xx_restart,
337 MACHINE_END
338 #endif
339
340 #ifdef CONFIG_MACH_EDB9315A
341 MACHINE_START(EDB9315A, "Cirrus Logic EDB9315A Evaluation Board")
342 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
343 .atag_offset = 0x100,
344 .map_io = ep93xx_map_io,
345 .init_irq = ep93xx_init_irq,
346 .handle_irq = vic_handle_irq,
347 .timer = &ep93xx_timer,
348 .init_machine = edb93xx_init_machine,
349 .restart = ep93xx_restart,
350 MACHINE_END
351 #endif
352