1 /*
2 * linux/arch/arm/mach-omap1/devices.c
3 *
4 * OMAP1 platform device setup/initialization
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 */
11
12 #include <linux/dma-mapping.h>
13 #include <linux/gpio.h>
14 #include <linux/module.h>
15 #include <linux/kernel.h>
16 #include <linux/init.h>
17 #include <linux/platform_device.h>
18 #include <linux/spi/spi.h>
19
20 #include <asm/mach/map.h>
21
22 #include <plat/tc.h>
23 #include <plat/board.h>
24 #include <plat/mux.h>
25 #include <plat/mmc.h>
26 #include <plat/omap7xx.h>
27
28 #include <mach/camera.h>
29 #include <mach/hardware.h>
30
31 #include "common.h"
32 #include "clock.h"
33
34 /*-------------------------------------------------------------------------*/
35
36 #if defined(CONFIG_RTC_DRV_OMAP) || defined(CONFIG_RTC_DRV_OMAP_MODULE)
37
38 #define OMAP_RTC_BASE 0xfffb4800
39
40 static struct resource rtc_resources[] = {
41 {
42 .start = OMAP_RTC_BASE,
43 .end = OMAP_RTC_BASE + 0x5f,
44 .flags = IORESOURCE_MEM,
45 },
46 {
47 .start = INT_RTC_TIMER,
48 .flags = IORESOURCE_IRQ,
49 },
50 {
51 .start = INT_RTC_ALARM,
52 .flags = IORESOURCE_IRQ,
53 },
54 };
55
56 static struct platform_device omap_rtc_device = {
57 .name = "omap_rtc",
58 .id = -1,
59 .num_resources = ARRAY_SIZE(rtc_resources),
60 .resource = rtc_resources,
61 };
62
omap_init_rtc(void)63 static void omap_init_rtc(void)
64 {
65 (void) platform_device_register(&omap_rtc_device);
66 }
67 #else
omap_init_rtc(void)68 static inline void omap_init_rtc(void) {}
69 #endif
70
omap_init_mbox(void)71 static inline void omap_init_mbox(void) { }
72
73 /*-------------------------------------------------------------------------*/
74
75 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
76
omap1_mmc_mux(struct omap_mmc_platform_data * mmc_controller,int controller_nr)77 static inline void omap1_mmc_mux(struct omap_mmc_platform_data *mmc_controller,
78 int controller_nr)
79 {
80 if (controller_nr == 0) {
81 if (cpu_is_omap7xx()) {
82 omap_cfg_reg(MMC_7XX_CMD);
83 omap_cfg_reg(MMC_7XX_CLK);
84 omap_cfg_reg(MMC_7XX_DAT0);
85 } else {
86 omap_cfg_reg(MMC_CMD);
87 omap_cfg_reg(MMC_CLK);
88 omap_cfg_reg(MMC_DAT0);
89 }
90
91 if (cpu_is_omap1710()) {
92 omap_cfg_reg(M15_1710_MMC_CLKI);
93 omap_cfg_reg(P19_1710_MMC_CMDDIR);
94 omap_cfg_reg(P20_1710_MMC_DATDIR0);
95 }
96 if (mmc_controller->slots[0].wires == 4 && !cpu_is_omap7xx()) {
97 omap_cfg_reg(MMC_DAT1);
98 /* NOTE: DAT2 can be on W10 (here) or M15 */
99 if (!mmc_controller->slots[0].nomux)
100 omap_cfg_reg(MMC_DAT2);
101 omap_cfg_reg(MMC_DAT3);
102 }
103 }
104
105 /* Block 2 is on newer chips, and has many pinout options */
106 if (cpu_is_omap16xx() && controller_nr == 1) {
107 if (!mmc_controller->slots[1].nomux) {
108 omap_cfg_reg(Y8_1610_MMC2_CMD);
109 omap_cfg_reg(Y10_1610_MMC2_CLK);
110 omap_cfg_reg(R18_1610_MMC2_CLKIN);
111 omap_cfg_reg(W8_1610_MMC2_DAT0);
112 if (mmc_controller->slots[1].wires == 4) {
113 omap_cfg_reg(V8_1610_MMC2_DAT1);
114 omap_cfg_reg(W15_1610_MMC2_DAT2);
115 omap_cfg_reg(R10_1610_MMC2_DAT3);
116 }
117
118 /* These are needed for the level shifter */
119 omap_cfg_reg(V9_1610_MMC2_CMDDIR);
120 omap_cfg_reg(V5_1610_MMC2_DATDIR0);
121 omap_cfg_reg(W19_1610_MMC2_DATDIR1);
122 }
123
124 /* Feedback clock must be set on OMAP-1710 MMC2 */
125 if (cpu_is_omap1710())
126 omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
127 MOD_CONF_CTRL_1);
128 }
129 }
130
omap1_init_mmc(struct omap_mmc_platform_data ** mmc_data,int nr_controllers)131 void __init omap1_init_mmc(struct omap_mmc_platform_data **mmc_data,
132 int nr_controllers)
133 {
134 int i;
135
136 for (i = 0; i < nr_controllers; i++) {
137 unsigned long base, size;
138 unsigned int irq = 0;
139
140 if (!mmc_data[i])
141 continue;
142
143 omap1_mmc_mux(mmc_data[i], i);
144
145 switch (i) {
146 case 0:
147 base = OMAP1_MMC1_BASE;
148 irq = INT_MMC;
149 break;
150 case 1:
151 if (!cpu_is_omap16xx())
152 return;
153 base = OMAP1_MMC2_BASE;
154 irq = INT_1610_MMC2;
155 break;
156 default:
157 continue;
158 }
159 size = OMAP1_MMC_SIZE;
160
161 omap_mmc_add("mmci-omap", i, base, size, irq, mmc_data[i]);
162 };
163 }
164
165 #endif
166
167 /*-------------------------------------------------------------------------*/
168
169 /* OMAP7xx SPI support */
170 #if defined(CONFIG_SPI_OMAP_100K) || defined(CONFIG_SPI_OMAP_100K_MODULE)
171
172 struct platform_device omap_spi1 = {
173 .name = "omap1_spi100k",
174 .id = 1,
175 };
176
177 struct platform_device omap_spi2 = {
178 .name = "omap1_spi100k",
179 .id = 2,
180 };
181
omap_init_spi100k(void)182 static void omap_init_spi100k(void)
183 {
184 omap_spi1.dev.platform_data = ioremap(OMAP7XX_SPI1_BASE, 0x7ff);
185 if (omap_spi1.dev.platform_data)
186 platform_device_register(&omap_spi1);
187
188 omap_spi2.dev.platform_data = ioremap(OMAP7XX_SPI2_BASE, 0x7ff);
189 if (omap_spi2.dev.platform_data)
190 platform_device_register(&omap_spi2);
191 }
192
193 #else
omap_init_spi100k(void)194 static inline void omap_init_spi100k(void)
195 {
196 }
197 #endif
198
199
200 #define OMAP1_CAMERA_BASE 0xfffb6800
201 #define OMAP1_CAMERA_IOSIZE 0x1c
202
203 static struct resource omap1_camera_resources[] = {
204 [0] = {
205 .start = OMAP1_CAMERA_BASE,
206 .end = OMAP1_CAMERA_BASE + OMAP1_CAMERA_IOSIZE - 1,
207 .flags = IORESOURCE_MEM,
208 },
209 [1] = {
210 .start = INT_CAMERA,
211 .flags = IORESOURCE_IRQ,
212 },
213 };
214
215 static u64 omap1_camera_dma_mask = DMA_BIT_MASK(32);
216
217 static struct platform_device omap1_camera_device = {
218 .name = "omap1-camera",
219 .id = 0, /* This is used to put cameras on this interface */
220 .dev = {
221 .dma_mask = &omap1_camera_dma_mask,
222 .coherent_dma_mask = DMA_BIT_MASK(32),
223 },
224 .num_resources = ARRAY_SIZE(omap1_camera_resources),
225 .resource = omap1_camera_resources,
226 };
227
omap1_camera_init(void * info)228 void __init omap1_camera_init(void *info)
229 {
230 struct platform_device *dev = &omap1_camera_device;
231 int ret;
232
233 dev->dev.platform_data = info;
234
235 ret = platform_device_register(dev);
236 if (ret)
237 dev_err(&dev->dev, "unable to register device: %d\n", ret);
238 }
239
240
241 /*-------------------------------------------------------------------------*/
242
omap_init_sti(void)243 static inline void omap_init_sti(void) {}
244
245 #if defined(CONFIG_SND_SOC) || defined(CONFIG_SND_SOC_MODULE)
246
247 static struct platform_device omap_pcm = {
248 .name = "omap-pcm-audio",
249 .id = -1,
250 };
251
omap_init_audio(void)252 static void omap_init_audio(void)
253 {
254 platform_device_register(&omap_pcm);
255 }
256
257 #else
omap_init_audio(void)258 static inline void omap_init_audio(void) {}
259 #endif
260
261 /*-------------------------------------------------------------------------*/
262
263 /*
264 * This gets called after board-specific INIT_MACHINE, and initializes most
265 * on-chip peripherals accessible on this board (except for few like USB):
266 *
267 * (a) Does any "standard config" pin muxing needed. Board-specific
268 * code will have muxed GPIO pins and done "nonstandard" setup;
269 * that code could live in the boot loader.
270 * (b) Populating board-specific platform_data with the data drivers
271 * rely on to handle wiring variations.
272 * (c) Creating platform devices as meaningful on this board and
273 * with this kernel configuration.
274 *
275 * Claiming GPIOs, and setting their direction and initial values, is the
276 * responsibility of the device drivers. So is responding to probe().
277 *
278 * Board-specific knowledge like creating devices or pin setup is to be
279 * kept out of drivers as much as possible. In particular, pin setup
280 * may be handled by the boot loader, and drivers should expect it will
281 * normally have been done by the time they're probed.
282 */
omap1_init_devices(void)283 static int __init omap1_init_devices(void)
284 {
285 if (!cpu_class_is_omap1())
286 return -ENODEV;
287
288 omap_sram_init();
289 omap1_clk_late_init();
290
291 /* please keep these calls, and their implementations above,
292 * in alphabetical order so they're easier to sort through.
293 */
294
295 omap_init_mbox();
296 omap_init_rtc();
297 omap_init_spi100k();
298 omap_init_sti();
299 omap_init_audio();
300
301 return 0;
302 }
303 arch_initcall(omap1_init_devices);
304
305 #if defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
306
307 static struct resource wdt_resources[] = {
308 {
309 .start = 0xfffeb000,
310 .end = 0xfffeb07F,
311 .flags = IORESOURCE_MEM,
312 },
313 };
314
315 static struct platform_device omap_wdt_device = {
316 .name = "omap_wdt",
317 .id = -1,
318 .num_resources = ARRAY_SIZE(wdt_resources),
319 .resource = wdt_resources,
320 };
321
omap_init_wdt(void)322 static int __init omap_init_wdt(void)
323 {
324 if (!cpu_is_omap16xx())
325 return -ENODEV;
326
327 return platform_device_register(&omap_wdt_device);
328 }
329 subsys_initcall(omap_init_wdt);
330 #endif
331