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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>
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