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 	.map_io		= ep93xx_map_io,
247 	.init_irq	= ep93xx_init_irq,
248 	.init_time	= ep93xx_timer_init,
249 	.init_machine	= edb93xx_init_machine,
250 	.restart	= ep93xx_restart,
251 MACHINE_END
252 #endif
253 
254 #ifdef CONFIG_MACH_EDB9302
255 MACHINE_START(EDB9302, "Cirrus Logic EDB9302 Evaluation Board")
256 	/* Maintainer: George Kashperko <george@chas.com.ua> */
257 	.atag_offset	= 0x100,
258 	.map_io		= ep93xx_map_io,
259 	.init_irq	= ep93xx_init_irq,
260 	.init_time	= ep93xx_timer_init,
261 	.init_machine	= edb93xx_init_machine,
262 	.restart	= ep93xx_restart,
263 MACHINE_END
264 #endif
265 
266 #ifdef CONFIG_MACH_EDB9302A
267 MACHINE_START(EDB9302A, "Cirrus Logic EDB9302A Evaluation Board")
268 	/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
269 	.atag_offset	= 0x100,
270 	.map_io		= ep93xx_map_io,
271 	.init_irq	= ep93xx_init_irq,
272 	.init_time	= ep93xx_timer_init,
273 	.init_machine	= edb93xx_init_machine,
274 	.restart	= ep93xx_restart,
275 MACHINE_END
276 #endif
277 
278 #ifdef CONFIG_MACH_EDB9307
279 MACHINE_START(EDB9307, "Cirrus Logic EDB9307 Evaluation Board")
280 	/* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
281 	.atag_offset	= 0x100,
282 	.map_io		= ep93xx_map_io,
283 	.init_irq	= ep93xx_init_irq,
284 	.init_time	= ep93xx_timer_init,
285 	.init_machine	= edb93xx_init_machine,
286 	.restart	= ep93xx_restart,
287 MACHINE_END
288 #endif
289 
290 #ifdef CONFIG_MACH_EDB9307A
291 MACHINE_START(EDB9307A, "Cirrus Logic EDB9307A Evaluation Board")
292 	/* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
293 	.atag_offset	= 0x100,
294 	.map_io		= ep93xx_map_io,
295 	.init_irq	= ep93xx_init_irq,
296 	.init_time	= ep93xx_timer_init,
297 	.init_machine	= edb93xx_init_machine,
298 	.restart	= ep93xx_restart,
299 MACHINE_END
300 #endif
301 
302 #ifdef CONFIG_MACH_EDB9312
303 MACHINE_START(EDB9312, "Cirrus Logic EDB9312 Evaluation Board")
304 	/* Maintainer: Toufeeq Hussain <toufeeq_hussain@infosys.com> */
305 	.atag_offset	= 0x100,
306 	.map_io		= ep93xx_map_io,
307 	.init_irq	= ep93xx_init_irq,
308 	.init_time	= ep93xx_timer_init,
309 	.init_machine	= edb93xx_init_machine,
310 	.restart	= ep93xx_restart,
311 MACHINE_END
312 #endif
313 
314 #ifdef CONFIG_MACH_EDB9315
315 MACHINE_START(EDB9315, "Cirrus Logic EDB9315 Evaluation Board")
316 	/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
317 	.atag_offset	= 0x100,
318 	.map_io		= ep93xx_map_io,
319 	.init_irq	= ep93xx_init_irq,
320 	.init_time	= ep93xx_timer_init,
321 	.init_machine	= edb93xx_init_machine,
322 	.restart	= ep93xx_restart,
323 MACHINE_END
324 #endif
325 
326 #ifdef CONFIG_MACH_EDB9315A
327 MACHINE_START(EDB9315A, "Cirrus Logic EDB9315A Evaluation Board")
328 	/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
329 	.atag_offset	= 0x100,
330 	.map_io		= ep93xx_map_io,
331 	.init_irq	= ep93xx_init_irq,
332 	.init_time	= ep93xx_timer_init,
333 	.init_machine	= edb93xx_init_machine,
334 	.restart	= ep93xx_restart,
335 MACHINE_END
336 #endif
337