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
edb93xx_register_flash(void)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
edb93xx_register_i2c(void)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 .gpio_nreset = -EINVAL, /* filled in later */
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
edb93xx_register_spi(void)117 static void __init edb93xx_register_spi(void)
118 {
119 if (machine_is_edb9301() || machine_is_edb9302())
120 edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO1;
121 else if (machine_is_edb9302a() || machine_is_edb9307a())
122 edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_H(2);
123 else if (machine_is_edb9315a())
124 edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO14;
125
126 gpiod_add_lookup_table(&edb93xx_spi_cs_gpio_table);
127 ep93xx_register_spi(&edb93xx_spi_info, edb93xx_spi_board_info,
128 ARRAY_SIZE(edb93xx_spi_board_info));
129 }
130
131
132 /*************************************************************************
133 * EDB93xx I2S
134 *************************************************************************/
135 static struct platform_device edb93xx_audio_device = {
136 .name = "edb93xx-audio",
137 .id = -1,
138 };
139
edb93xx_has_audio(void)140 static int __init edb93xx_has_audio(void)
141 {
142 return (machine_is_edb9301() || machine_is_edb9302() ||
143 machine_is_edb9302a() || machine_is_edb9307a() ||
144 machine_is_edb9315a());
145 }
146
edb93xx_register_i2s(void)147 static void __init edb93xx_register_i2s(void)
148 {
149 if (edb93xx_has_audio()) {
150 ep93xx_register_i2s();
151 platform_device_register(&edb93xx_audio_device);
152 }
153 }
154
155
156 /*************************************************************************
157 * EDB93xx pwm
158 *************************************************************************/
edb93xx_register_pwm(void)159 static void __init edb93xx_register_pwm(void)
160 {
161 if (machine_is_edb9301() ||
162 machine_is_edb9302() || machine_is_edb9302a()) {
163 /* EP9301 and EP9302 only have pwm.1 (EGPIO14) */
164 ep93xx_register_pwm(0, 1);
165 } else if (machine_is_edb9307() || machine_is_edb9307a()) {
166 /* EP9307 only has pwm.0 (PWMOUT) */
167 ep93xx_register_pwm(1, 0);
168 } else {
169 /* EP9312 and EP9315 have both */
170 ep93xx_register_pwm(1, 1);
171 }
172 }
173
174
175 /*************************************************************************
176 * EDB93xx framebuffer
177 *************************************************************************/
178 static struct ep93xxfb_mach_info __initdata edb93xxfb_info = {
179 .flags = 0,
180 };
181
edb93xx_has_fb(void)182 static int __init edb93xx_has_fb(void)
183 {
184 /* These platforms have an ep93xx with video capability */
185 return machine_is_edb9307() || machine_is_edb9307a() ||
186 machine_is_edb9312() || machine_is_edb9315() ||
187 machine_is_edb9315a();
188 }
189
edb93xx_register_fb(void)190 static void __init edb93xx_register_fb(void)
191 {
192 if (!edb93xx_has_fb())
193 return;
194
195 if (machine_is_edb9307a() || machine_is_edb9315a())
196 edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN0;
197 else
198 edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN3;
199
200 ep93xx_register_fb(&edb93xxfb_info);
201 }
202
203
204 /*************************************************************************
205 * EDB93xx IDE
206 *************************************************************************/
edb93xx_has_ide(void)207 static int __init edb93xx_has_ide(void)
208 {
209 /*
210 * Although EDB9312 and EDB9315 do have IDE capability, they have
211 * INTRQ line wired as pull-up, which makes using IDE interface
212 * problematic.
213 */
214 return machine_is_edb9312() || machine_is_edb9315() ||
215 machine_is_edb9315a();
216 }
217
edb93xx_register_ide(void)218 static void __init edb93xx_register_ide(void)
219 {
220 if (!edb93xx_has_ide())
221 return;
222
223 ep93xx_register_ide();
224 }
225
226
edb93xx_init_machine(void)227 static void __init edb93xx_init_machine(void)
228 {
229 ep93xx_init_devices();
230 edb93xx_register_flash();
231 ep93xx_register_eth(&edb93xx_eth_data, 1);
232 edb93xx_register_i2c();
233 edb93xx_register_spi();
234 edb93xx_register_i2s();
235 edb93xx_register_pwm();
236 edb93xx_register_fb();
237 edb93xx_register_ide();
238 ep93xx_register_adc();
239 }
240
241
242 #ifdef CONFIG_MACH_EDB9301
243 MACHINE_START(EDB9301, "Cirrus Logic EDB9301 Evaluation Board")
244 /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
245 .atag_offset = 0x100,
246 .nr_irqs = NR_EP93XX_IRQS,
247 .map_io = ep93xx_map_io,
248 .init_irq = ep93xx_init_irq,
249 .init_time = ep93xx_timer_init,
250 .init_machine = edb93xx_init_machine,
251 .restart = ep93xx_restart,
252 MACHINE_END
253 #endif
254
255 #ifdef CONFIG_MACH_EDB9302
256 MACHINE_START(EDB9302, "Cirrus Logic EDB9302 Evaluation Board")
257 /* Maintainer: George Kashperko <george@chas.com.ua> */
258 .atag_offset = 0x100,
259 .nr_irqs = NR_EP93XX_IRQS,
260 .map_io = ep93xx_map_io,
261 .init_irq = ep93xx_init_irq,
262 .init_time = ep93xx_timer_init,
263 .init_machine = edb93xx_init_machine,
264 .restart = ep93xx_restart,
265 MACHINE_END
266 #endif
267
268 #ifdef CONFIG_MACH_EDB9302A
269 MACHINE_START(EDB9302A, "Cirrus Logic EDB9302A Evaluation Board")
270 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
271 .atag_offset = 0x100,
272 .nr_irqs = NR_EP93XX_IRQS,
273 .map_io = ep93xx_map_io,
274 .init_irq = ep93xx_init_irq,
275 .init_time = ep93xx_timer_init,
276 .init_machine = edb93xx_init_machine,
277 .restart = ep93xx_restart,
278 MACHINE_END
279 #endif
280
281 #ifdef CONFIG_MACH_EDB9307
282 MACHINE_START(EDB9307, "Cirrus Logic EDB9307 Evaluation Board")
283 /* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
284 .atag_offset = 0x100,
285 .nr_irqs = NR_EP93XX_IRQS,
286 .map_io = ep93xx_map_io,
287 .init_irq = ep93xx_init_irq,
288 .init_time = ep93xx_timer_init,
289 .init_machine = edb93xx_init_machine,
290 .restart = ep93xx_restart,
291 MACHINE_END
292 #endif
293
294 #ifdef CONFIG_MACH_EDB9307A
295 MACHINE_START(EDB9307A, "Cirrus Logic EDB9307A Evaluation Board")
296 /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
297 .atag_offset = 0x100,
298 .nr_irqs = NR_EP93XX_IRQS,
299 .map_io = ep93xx_map_io,
300 .init_irq = ep93xx_init_irq,
301 .init_time = ep93xx_timer_init,
302 .init_machine = edb93xx_init_machine,
303 .restart = ep93xx_restart,
304 MACHINE_END
305 #endif
306
307 #ifdef CONFIG_MACH_EDB9312
308 MACHINE_START(EDB9312, "Cirrus Logic EDB9312 Evaluation Board")
309 /* Maintainer: Toufeeq Hussain <toufeeq_hussain@infosys.com> */
310 .atag_offset = 0x100,
311 .nr_irqs = NR_EP93XX_IRQS,
312 .map_io = ep93xx_map_io,
313 .init_irq = ep93xx_init_irq,
314 .init_time = ep93xx_timer_init,
315 .init_machine = edb93xx_init_machine,
316 .restart = ep93xx_restart,
317 MACHINE_END
318 #endif
319
320 #ifdef CONFIG_MACH_EDB9315
321 MACHINE_START(EDB9315, "Cirrus Logic EDB9315 Evaluation Board")
322 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
323 .atag_offset = 0x100,
324 .nr_irqs = NR_EP93XX_IRQS,
325 .map_io = ep93xx_map_io,
326 .init_irq = ep93xx_init_irq,
327 .init_time = ep93xx_timer_init,
328 .init_machine = edb93xx_init_machine,
329 .restart = ep93xx_restart,
330 MACHINE_END
331 #endif
332
333 #ifdef CONFIG_MACH_EDB9315A
334 MACHINE_START(EDB9315A, "Cirrus Logic EDB9315A Evaluation Board")
335 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
336 .atag_offset = 0x100,
337 .nr_irqs = NR_EP93XX_IRQS,
338 .map_io = ep93xx_map_io,
339 .init_irq = ep93xx_init_irq,
340 .init_time = ep93xx_timer_init,
341 .init_machine = edb93xx_init_machine,
342 .restart = ep93xx_restart,
343 MACHINE_END
344 #endif
345
