1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * arch/arm/mach-ep93xx/edb93xx.c
4 * Cirrus Logic EDB93xx Development Board support.
5 *
6 * EDB93XX, EDB9301, EDB9307A
7 * Copyright (C) 2008-2009 H Hartley Sweeten <hsweeten@visionengravers.com>
8 *
9 * EDB9302
10 * Copyright (C) 2006 George Kashperko <george@chas.com.ua>
11 *
12 * EDB9302A, EDB9315, EDB9315A
13 * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
14 *
15 * EDB9307
16 * Copyright (C) 2007 Herbert Valerio Riedel <hvr@gnu.org>
17 *
18 * EDB9312
19 * Copyright (C) 2006 Infosys Technologies Limited
20 * Toufeeq Hussain <toufeeq_hussain@infosys.com>
21 */
22
23 #include <linux/kernel.h>
24 #include <linux/init.h>
25 #include <linux/platform_device.h>
26 #include <linux/i2c.h>
27 #include <linux/spi/spi.h>
28 #include <linux/gpio/machine.h>
29
30 #include <sound/cs4271.h>
31
32 #include "hardware.h"
33 #include <linux/platform_data/video-ep93xx.h>
34 #include <linux/platform_data/spi-ep93xx.h>
35 #include "gpio-ep93xx.h"
36
37 #include <asm/mach-types.h>
38 #include <asm/mach/arch.h>
39
40 #include "soc.h"
41
42 static void __init edb93xx_register_flash(void)
43 {
44 if (machine_is_edb9307() || machine_is_edb9312() ||
45 machine_is_edb9315()) {
46 ep93xx_register_flash(4, EP93XX_CS6_PHYS_BASE, SZ_32M);
47 } else {
48 ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_16M);
49 }
50 }
51
52 static struct ep93xx_eth_data __initdata edb93xx_eth_data = {
53 .phy_id = 1,
54 };
55
56
57 /*************************************************************************
58 * EDB93xx i2c peripheral handling
59 *************************************************************************/
60
61 static struct i2c_board_info __initdata edb93xxa_i2c_board_info[] = {
62 {
63 I2C_BOARD_INFO("isl1208", 0x6f),
64 },
65 };
66
67 static struct i2c_board_info __initdata edb93xx_i2c_board_info[] = {
68 {
69 I2C_BOARD_INFO("ds1337", 0x68),
70 },
71 };
72
73 static void __init edb93xx_register_i2c(void)
74 {
75 if (machine_is_edb9302a() || machine_is_edb9307a() ||
76 machine_is_edb9315a()) {
77 ep93xx_register_i2c(edb93xxa_i2c_board_info,
78 ARRAY_SIZE(edb93xxa_i2c_board_info));
79 } else if (machine_is_edb9302() || machine_is_edb9307()
80 || machine_is_edb9312() || machine_is_edb9315()) {
81 ep93xx_register_i2c(edb93xx_i2c_board_info,
82 ARRAY_SIZE(edb93xx_i2c_board_info));
83 }
84 }
85
86
87 /*************************************************************************
88 * EDB93xx SPI peripheral handling
89 *************************************************************************/
90 static struct cs4271_platform_data edb93xx_cs4271_data = {
91 /* Intentionally left blank */
92 };
93
94 static struct spi_board_info edb93xx_spi_board_info[] __initdata = {
95 {
96 .modalias = "cs4271",
97 .platform_data = &edb93xx_cs4271_data,
98 .max_speed_hz = 6000000,
99 .bus_num = 0,
100 .chip_select = 0,
101 .mode = SPI_MODE_3,
102 },
103 };
104
105 static struct gpiod_lookup_table edb93xx_spi_cs_gpio_table = {
106 .dev_id = "spi0",
107 .table = {
108 GPIO_LOOKUP("A", 6, "cs", GPIO_ACTIVE_LOW),
109 { },
110 },
111 };
112
113 static struct ep93xx_spi_info edb93xx_spi_info __initdata = {
114 /* Intentionally left blank */
115 };
116
117 static struct gpiod_lookup_table edb93xx_cs4272_edb9301_gpio_table = {
118 .dev_id = "spi0.0", /* CS0 on SPI0 */
119 .table = {
120 GPIO_LOOKUP("A", 1, "reset", GPIO_ACTIVE_LOW),
121 { },
122 },
123 };
124
125 static struct gpiod_lookup_table edb93xx_cs4272_edb9302_gpio_table = {
126 .dev_id = "spi0.0", /* CS0 on SPI0 */
127 .table = {
128 GPIO_LOOKUP("H", 2, "reset", GPIO_ACTIVE_LOW),
129 { },
130 },
131 };
132
133 static struct gpiod_lookup_table edb93xx_cs4272_edb9315_gpio_table = {
134 .dev_id = "spi0.0", /* CS0 on SPI0 */
135 .table = {
136 GPIO_LOOKUP("B", 6, "reset", GPIO_ACTIVE_LOW),
137 { },
138 },
139 };
140
141 static void __init edb93xx_register_spi(void)
142 {
143 if (machine_is_edb9301() || machine_is_edb9302())
144 gpiod_add_lookup_table(&edb93xx_cs4272_edb9301_gpio_table);
145 else if (machine_is_edb9302a() || machine_is_edb9307a())
146 gpiod_add_lookup_table(&edb93xx_cs4272_edb9302_gpio_table);
147 else if (machine_is_edb9315a())
148 gpiod_add_lookup_table(&edb93xx_cs4272_edb9315_gpio_table);
149
150 gpiod_add_lookup_table(&edb93xx_spi_cs_gpio_table);
151 ep93xx_register_spi(&edb93xx_spi_info, edb93xx_spi_board_info,
152 ARRAY_SIZE(edb93xx_spi_board_info));
153 }
154
155
156 /*************************************************************************
157 * EDB93xx I2S
158 *************************************************************************/
159 static struct platform_device edb93xx_audio_device = {
160 .name = "edb93xx-audio",
161 .id = -1,
162 };
163
164 static int __init edb93xx_has_audio(void)
165 {
166 return (machine_is_edb9301() || machine_is_edb9302() ||
167 machine_is_edb9302a() || machine_is_edb9307a() ||
168 machine_is_edb9315a());
169 }
170
171 static void __init edb93xx_register_i2s(void)
172 {
173 if (edb93xx_has_audio()) {
174 ep93xx_register_i2s();
175 platform_device_register(&edb93xx_audio_device);
176 }
177 }
178
179
180 /*************************************************************************
181 * EDB93xx pwm
182 *************************************************************************/
183 static void __init edb93xx_register_pwm(void)
184 {
185 if (machine_is_edb9301() ||
186 machine_is_edb9302() || machine_is_edb9302a()) {
187 /* EP9301 and EP9302 only have pwm.1 (EGPIO14) */
188 ep93xx_register_pwm(0, 1);
189 } else if (machine_is_edb9307() || machine_is_edb9307a()) {
190 /* EP9307 only has pwm.0 (PWMOUT) */
191 ep93xx_register_pwm(1, 0);
192 } else {
193 /* EP9312 and EP9315 have both */
194 ep93xx_register_pwm(1, 1);
195 }
196 }
197
198
199 /*************************************************************************
200 * EDB93xx framebuffer
201 *************************************************************************/
202 static struct ep93xxfb_mach_info __initdata edb93xxfb_info = {
203 .flags = 0,
204 };
205
206 static int __init edb93xx_has_fb(void)
207 {
208 /* These platforms have an ep93xx with video capability */
209 return machine_is_edb9307() || machine_is_edb9307a() ||
210 machine_is_edb9312() || machine_is_edb9315() ||
211 machine_is_edb9315a();
212 }
213
214 static void __init edb93xx_register_fb(void)
215 {
216 if (!edb93xx_has_fb())
217 return;
218
219 if (machine_is_edb9307a() || machine_is_edb9315a())
220 edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN0;
221 else
222 edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN3;
223
224 ep93xx_register_fb(&edb93xxfb_info);
225 }
226
227
228 /*************************************************************************
229 * EDB93xx IDE
230 *************************************************************************/
231 static int __init edb93xx_has_ide(void)
232 {
233 /*
234 * Although EDB9312 and EDB9315 do have IDE capability, they have
235 * INTRQ line wired as pull-up, which makes using IDE interface
236 * problematic.
237 */
238 return machine_is_edb9312() || machine_is_edb9315() ||
239 machine_is_edb9315a();
240 }
241
242 static void __init edb93xx_register_ide(void)
243 {
244 if (!edb93xx_has_ide())
245 return;
246
247 ep93xx_register_ide();
248 }
249
250
251 static void __init edb93xx_init_machine(void)
252 {
253 ep93xx_init_devices();
254 edb93xx_register_flash();
255 ep93xx_register_eth(&edb93xx_eth_data, 1);
256 edb93xx_register_i2c();
257 edb93xx_register_spi();
258 edb93xx_register_i2s();
259 edb93xx_register_pwm();
260 edb93xx_register_fb();
261 edb93xx_register_ide();
262 ep93xx_register_adc();
263 }
264
265
266 #ifdef CONFIG_MACH_EDB9301
267 MACHINE_START(EDB9301, "Cirrus Logic EDB9301 Evaluation Board")
268 /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
269 .atag_offset = 0x100,
270 .nr_irqs = NR_EP93XX_IRQS,
271 .map_io = ep93xx_map_io,
272 .init_irq = ep93xx_init_irq,
273 .init_time = ep93xx_timer_init,
274 .init_machine = edb93xx_init_machine,
275 .restart = ep93xx_restart,
276 MACHINE_END
277 #endif
278
279 #ifdef CONFIG_MACH_EDB9302
280 MACHINE_START(EDB9302, "Cirrus Logic EDB9302 Evaluation Board")
281 /* Maintainer: George Kashperko <george@chas.com.ua> */
282 .atag_offset = 0x100,
283 .nr_irqs = NR_EP93XX_IRQS,
284 .map_io = ep93xx_map_io,
285 .init_irq = ep93xx_init_irq,
286 .init_time = ep93xx_timer_init,
287 .init_machine = edb93xx_init_machine,
288 .restart = ep93xx_restart,
289 MACHINE_END
290 #endif
291
292 #ifdef CONFIG_MACH_EDB9302A
293 MACHINE_START(EDB9302A, "Cirrus Logic EDB9302A Evaluation Board")
294 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
295 .atag_offset = 0x100,
296 .nr_irqs = NR_EP93XX_IRQS,
297 .map_io = ep93xx_map_io,
298 .init_irq = ep93xx_init_irq,
299 .init_time = ep93xx_timer_init,
300 .init_machine = edb93xx_init_machine,
301 .restart = ep93xx_restart,
302 MACHINE_END
303 #endif
304
305 #ifdef CONFIG_MACH_EDB9307
306 MACHINE_START(EDB9307, "Cirrus Logic EDB9307 Evaluation Board")
307 /* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
308 .atag_offset = 0x100,
309 .nr_irqs = NR_EP93XX_IRQS,
310 .map_io = ep93xx_map_io,
311 .init_irq = ep93xx_init_irq,
312 .init_time = ep93xx_timer_init,
313 .init_machine = edb93xx_init_machine,
314 .restart = ep93xx_restart,
315 MACHINE_END
316 #endif
317
318 #ifdef CONFIG_MACH_EDB9307A
319 MACHINE_START(EDB9307A, "Cirrus Logic EDB9307A Evaluation Board")
320 /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
321 .atag_offset = 0x100,
322 .nr_irqs = NR_EP93XX_IRQS,
323 .map_io = ep93xx_map_io,
324 .init_irq = ep93xx_init_irq,
325 .init_time = ep93xx_timer_init,
326 .init_machine = edb93xx_init_machine,
327 .restart = ep93xx_restart,
328 MACHINE_END
329 #endif
330
331 #ifdef CONFIG_MACH_EDB9312
332 MACHINE_START(EDB9312, "Cirrus Logic EDB9312 Evaluation Board")
333 /* Maintainer: Toufeeq Hussain <toufeeq_hussain@infosys.com> */
334 .atag_offset = 0x100,
335 .nr_irqs = NR_EP93XX_IRQS,
336 .map_io = ep93xx_map_io,
337 .init_irq = ep93xx_init_irq,
338 .init_time = ep93xx_timer_init,
339 .init_machine = edb93xx_init_machine,
340 .restart = ep93xx_restart,
341 MACHINE_END
342 #endif
343
344 #ifdef CONFIG_MACH_EDB9315
345 MACHINE_START(EDB9315, "Cirrus Logic EDB9315 Evaluation Board")
346 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
347 .atag_offset = 0x100,
348 .nr_irqs = NR_EP93XX_IRQS,
349 .map_io = ep93xx_map_io,
350 .init_irq = ep93xx_init_irq,
351 .init_time = ep93xx_timer_init,
352 .init_machine = edb93xx_init_machine,
353 .restart = ep93xx_restart,
354 MACHINE_END
355 #endif
356
357 #ifdef CONFIG_MACH_EDB9315A
358 MACHINE_START(EDB9315A, "Cirrus Logic EDB9315A Evaluation Board")
359 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
360 .atag_offset = 0x100,
361 .nr_irqs = NR_EP93XX_IRQS,
362 .map_io = ep93xx_map_io,
363 .init_irq = ep93xx_init_irq,
364 .init_time = ep93xx_timer_init,
365 .init_machine = edb93xx_init_machine,
366 .restart = ep93xx_restart,
367 MACHINE_END
368 #endif
369
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