1feca354ce088751f26efeac41812b5982184906
[muen/linux.git] / arch / arm / mach-omap1 / devices.c
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/mux.h>
24 #include <plat/dma.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 #if defined(CONFIG_SND_SOC) || defined(CONFIG_SND_SOC_MODULE)
35
36 static struct platform_device omap_pcm = {
37         .name   = "omap-pcm-audio",
38         .id     = -1,
39 };
40
41 static void omap_init_audio(void)
42 {
43         platform_device_register(&omap_pcm);
44 }
45
46 #else
47 static inline void omap_init_audio(void) {}
48 #endif
49
50 /*-------------------------------------------------------------------------*/
51
52 #if defined(CONFIG_RTC_DRV_OMAP) || defined(CONFIG_RTC_DRV_OMAP_MODULE)
53
54 #define OMAP_RTC_BASE           0xfffb4800
55
56 static struct resource rtc_resources[] = {
57         {
58                 .start          = OMAP_RTC_BASE,
59                 .end            = OMAP_RTC_BASE + 0x5f,
60                 .flags          = IORESOURCE_MEM,
61         },
62         {
63                 .start          = INT_RTC_TIMER,
64                 .flags          = IORESOURCE_IRQ,
65         },
66         {
67                 .start          = INT_RTC_ALARM,
68                 .flags          = IORESOURCE_IRQ,
69         },
70 };
71
72 static struct platform_device omap_rtc_device = {
73         .name           = "omap_rtc",
74         .id             = -1,
75         .num_resources  = ARRAY_SIZE(rtc_resources),
76         .resource       = rtc_resources,
77 };
78
79 static void omap_init_rtc(void)
80 {
81         (void) platform_device_register(&omap_rtc_device);
82 }
83 #else
84 static inline void omap_init_rtc(void) {}
85 #endif
86
87 static inline void omap_init_mbox(void) { }
88
89 /*-------------------------------------------------------------------------*/
90
91 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
92
93 static inline void omap1_mmc_mux(struct omap_mmc_platform_data *mmc_controller,
94                         int controller_nr)
95 {
96         if (controller_nr == 0) {
97                 if (cpu_is_omap7xx()) {
98                         omap_cfg_reg(MMC_7XX_CMD);
99                         omap_cfg_reg(MMC_7XX_CLK);
100                         omap_cfg_reg(MMC_7XX_DAT0);
101                 } else {
102                         omap_cfg_reg(MMC_CMD);
103                         omap_cfg_reg(MMC_CLK);
104                         omap_cfg_reg(MMC_DAT0);
105                 }
106
107                 if (cpu_is_omap1710()) {
108                         omap_cfg_reg(M15_1710_MMC_CLKI);
109                         omap_cfg_reg(P19_1710_MMC_CMDDIR);
110                         omap_cfg_reg(P20_1710_MMC_DATDIR0);
111                 }
112                 if (mmc_controller->slots[0].wires == 4 && !cpu_is_omap7xx()) {
113                         omap_cfg_reg(MMC_DAT1);
114                         /* NOTE: DAT2 can be on W10 (here) or M15 */
115                         if (!mmc_controller->slots[0].nomux)
116                                 omap_cfg_reg(MMC_DAT2);
117                         omap_cfg_reg(MMC_DAT3);
118                 }
119         }
120
121         /* Block 2 is on newer chips, and has many pinout options */
122         if (cpu_is_omap16xx() && controller_nr == 1) {
123                 if (!mmc_controller->slots[1].nomux) {
124                         omap_cfg_reg(Y8_1610_MMC2_CMD);
125                         omap_cfg_reg(Y10_1610_MMC2_CLK);
126                         omap_cfg_reg(R18_1610_MMC2_CLKIN);
127                         omap_cfg_reg(W8_1610_MMC2_DAT0);
128                         if (mmc_controller->slots[1].wires == 4) {
129                                 omap_cfg_reg(V8_1610_MMC2_DAT1);
130                                 omap_cfg_reg(W15_1610_MMC2_DAT2);
131                                 omap_cfg_reg(R10_1610_MMC2_DAT3);
132                         }
133
134                         /* These are needed for the level shifter */
135                         omap_cfg_reg(V9_1610_MMC2_CMDDIR);
136                         omap_cfg_reg(V5_1610_MMC2_DATDIR0);
137                         omap_cfg_reg(W19_1610_MMC2_DATDIR1);
138                 }
139
140                 /* Feedback clock must be set on OMAP-1710 MMC2 */
141                 if (cpu_is_omap1710())
142                         omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
143                                         MOD_CONF_CTRL_1);
144         }
145 }
146
147 #define OMAP_MMC_NR_RES         4
148
149 /*
150  * Register MMC devices.
151  */
152 static int __init omap_mmc_add(const char *name, int id, unsigned long base,
153                                 unsigned long size, unsigned int irq,
154                                 unsigned rx_req, unsigned tx_req,
155                                 struct omap_mmc_platform_data *data)
156 {
157         struct platform_device *pdev;
158         struct resource res[OMAP_MMC_NR_RES];
159         int ret;
160
161         pdev = platform_device_alloc(name, id);
162         if (!pdev)
163                 return -ENOMEM;
164
165         memset(res, 0, OMAP_MMC_NR_RES * sizeof(struct resource));
166         res[0].start = base;
167         res[0].end = base + size - 1;
168         res[0].flags = IORESOURCE_MEM;
169         res[1].start = res[1].end = irq;
170         res[1].flags = IORESOURCE_IRQ;
171         res[2].start = rx_req;
172         res[2].name = "rx";
173         res[2].flags = IORESOURCE_DMA;
174         res[3].start = tx_req;
175         res[3].name = "tx";
176         res[3].flags = IORESOURCE_DMA;
177
178         ret = platform_device_add_resources(pdev, res, ARRAY_SIZE(res));
179         if (ret == 0)
180                 ret = platform_device_add_data(pdev, data, sizeof(*data));
181         if (ret)
182                 goto fail;
183
184         ret = platform_device_add(pdev);
185         if (ret)
186                 goto fail;
187
188         /* return device handle to board setup code */
189         data->dev = &pdev->dev;
190         return 0;
191
192 fail:
193         platform_device_put(pdev);
194         return ret;
195 }
196
197 void __init omap1_init_mmc(struct omap_mmc_platform_data **mmc_data,
198                         int nr_controllers)
199 {
200         int i;
201
202         for (i = 0; i < nr_controllers; i++) {
203                 unsigned long base, size;
204                 unsigned rx_req, tx_req;
205                 unsigned int irq = 0;
206
207                 if (!mmc_data[i])
208                         continue;
209
210                 omap1_mmc_mux(mmc_data[i], i);
211
212                 switch (i) {
213                 case 0:
214                         base = OMAP1_MMC1_BASE;
215                         irq = INT_MMC;
216                         rx_req = OMAP_DMA_MMC_RX;
217                         tx_req = OMAP_DMA_MMC_TX;
218                         break;
219                 case 1:
220                         if (!cpu_is_omap16xx())
221                                 return;
222                         base = OMAP1_MMC2_BASE;
223                         irq = INT_1610_MMC2;
224                         rx_req = OMAP_DMA_MMC2_RX;
225                         tx_req = OMAP_DMA_MMC2_TX;
226                         break;
227                 default:
228                         continue;
229                 }
230                 size = OMAP1_MMC_SIZE;
231
232                 omap_mmc_add("mmci-omap", i, base, size, irq,
233                                 rx_req, tx_req, mmc_data[i]);
234         };
235 }
236
237 #endif
238
239 /*-------------------------------------------------------------------------*/
240
241 /* OMAP7xx SPI support */
242 #if defined(CONFIG_SPI_OMAP_100K) || defined(CONFIG_SPI_OMAP_100K_MODULE)
243
244 struct platform_device omap_spi1 = {
245         .name           = "omap1_spi100k",
246         .id             = 1,
247 };
248
249 struct platform_device omap_spi2 = {
250         .name           = "omap1_spi100k",
251         .id             = 2,
252 };
253
254 static void omap_init_spi100k(void)
255 {
256         omap_spi1.dev.platform_data = ioremap(OMAP7XX_SPI1_BASE, 0x7ff);
257         if (omap_spi1.dev.platform_data)
258                 platform_device_register(&omap_spi1);
259
260         omap_spi2.dev.platform_data = ioremap(OMAP7XX_SPI2_BASE, 0x7ff);
261         if (omap_spi2.dev.platform_data)
262                 platform_device_register(&omap_spi2);
263 }
264
265 #else
266 static inline void omap_init_spi100k(void)
267 {
268 }
269 #endif
270
271
272 #define OMAP1_CAMERA_BASE       0xfffb6800
273 #define OMAP1_CAMERA_IOSIZE     0x1c
274
275 static struct resource omap1_camera_resources[] = {
276         [0] = {
277                 .start  = OMAP1_CAMERA_BASE,
278                 .end    = OMAP1_CAMERA_BASE + OMAP1_CAMERA_IOSIZE - 1,
279                 .flags  = IORESOURCE_MEM,
280         },
281         [1] = {
282                 .start  = INT_CAMERA,
283                 .flags  = IORESOURCE_IRQ,
284         },
285 };
286
287 static u64 omap1_camera_dma_mask = DMA_BIT_MASK(32);
288
289 static struct platform_device omap1_camera_device = {
290         .name           = "omap1-camera",
291         .id             = 0, /* This is used to put cameras on this interface */
292         .dev            = {
293                 .dma_mask               = &omap1_camera_dma_mask,
294                 .coherent_dma_mask      = DMA_BIT_MASK(32),
295         },
296         .num_resources  = ARRAY_SIZE(omap1_camera_resources),
297         .resource       = omap1_camera_resources,
298 };
299
300 void __init omap1_camera_init(void *info)
301 {
302         struct platform_device *dev = &omap1_camera_device;
303         int ret;
304
305         dev->dev.platform_data = info;
306
307         ret = platform_device_register(dev);
308         if (ret)
309                 dev_err(&dev->dev, "unable to register device: %d\n", ret);
310 }
311
312
313 /*-------------------------------------------------------------------------*/
314
315 static inline void omap_init_sti(void) {}
316
317 /* Numbering for the SPI-capable controllers when used for SPI:
318  * spi          = 1
319  * uwire        = 2
320  * mmc1..2      = 3..4
321  * mcbsp1..3    = 5..7
322  */
323
324 #if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)
325
326 #define OMAP_UWIRE_BASE         0xfffb3000
327
328 static struct resource uwire_resources[] = {
329         {
330                 .start          = OMAP_UWIRE_BASE,
331                 .end            = OMAP_UWIRE_BASE + 0x20,
332                 .flags          = IORESOURCE_MEM,
333         },
334 };
335
336 static struct platform_device omap_uwire_device = {
337         .name      = "omap_uwire",
338         .id          = -1,
339         .num_resources  = ARRAY_SIZE(uwire_resources),
340         .resource       = uwire_resources,
341 };
342
343 static void omap_init_uwire(void)
344 {
345         /* FIXME define and use a boot tag; not all boards will be hooking
346          * up devices to the microwire controller, and multi-board configs
347          * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
348          */
349
350         /* board-specific code must configure chipselects (only a few
351          * are normally used) and SCLK/SDI/SDO (each has two choices).
352          */
353         (void) platform_device_register(&omap_uwire_device);
354 }
355 #else
356 static inline void omap_init_uwire(void) {}
357 #endif
358
359
360 /*
361  * This gets called after board-specific INIT_MACHINE, and initializes most
362  * on-chip peripherals accessible on this board (except for few like USB):
363  *
364  *  (a) Does any "standard config" pin muxing needed.  Board-specific
365  *      code will have muxed GPIO pins and done "nonstandard" setup;
366  *      that code could live in the boot loader.
367  *  (b) Populating board-specific platform_data with the data drivers
368  *      rely on to handle wiring variations.
369  *  (c) Creating platform devices as meaningful on this board and
370  *      with this kernel configuration.
371  *
372  * Claiming GPIOs, and setting their direction and initial values, is the
373  * responsibility of the device drivers.  So is responding to probe().
374  *
375  * Board-specific knowledge like creating devices or pin setup is to be
376  * kept out of drivers as much as possible.  In particular, pin setup
377  * may be handled by the boot loader, and drivers should expect it will
378  * normally have been done by the time they're probed.
379  */
380 static int __init omap1_init_devices(void)
381 {
382         if (!cpu_class_is_omap1())
383                 return -ENODEV;
384
385         omap_sram_init();
386         omap1_clk_late_init();
387
388         /* please keep these calls, and their implementations above,
389          * in alphabetical order so they're easier to sort through.
390          */
391
392         omap_init_audio();
393         omap_init_mbox();
394         omap_init_rtc();
395         omap_init_spi100k();
396         omap_init_sti();
397         omap_init_uwire();
398
399         return 0;
400 }
401 arch_initcall(omap1_init_devices);
402
403 #if defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
404
405 static struct resource wdt_resources[] = {
406         {
407                 .start          = 0xfffeb000,
408                 .end            = 0xfffeb07F,
409                 .flags          = IORESOURCE_MEM,
410         },
411 };
412
413 static struct platform_device omap_wdt_device = {
414         .name      = "omap_wdt",
415         .id          = -1,
416         .num_resources  = ARRAY_SIZE(wdt_resources),
417         .resource       = wdt_resources,
418 };
419
420 static int __init omap_init_wdt(void)
421 {
422         if (!cpu_is_omap16xx())
423                 return -ENODEV;
424
425         return platform_device_register(&omap_wdt_device);
426 }
427 subsys_initcall(omap_init_wdt);
428 #endif