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 <linux/platform_data/omap-wd-timer.h>
21
22#include <asm/mach/map.h>
23
24#include <mach/tc.h>
25#include <mach/mux.h>
26
27#include <mach/omap7xx.h>
28#include <mach/camera.h>
29#include <mach/hardware.h>
30
31#include "common.h"
32#include "clock.h"
33#include "mmc.h"
34#include "sram.h"
35
36#if defined(CONFIG_SND_SOC) || defined(CONFIG_SND_SOC_MODULE)
37
38static struct platform_device omap_pcm = {
39	.name	= "omap-pcm-audio",
40	.id	= -1,
41};
42
43static void omap_init_audio(void)
44{
45	platform_device_register(&omap_pcm);
46}
47
48#else
49static inline void omap_init_audio(void) {}
50#endif
51
52/*-------------------------------------------------------------------------*/
53
54#if defined(CONFIG_RTC_DRV_OMAP) || defined(CONFIG_RTC_DRV_OMAP_MODULE)
55
56#define	OMAP_RTC_BASE		0xfffb4800
57
58static struct resource rtc_resources[] = {
59	{
60		.start		= OMAP_RTC_BASE,
61		.end		= OMAP_RTC_BASE + 0x5f,
62		.flags		= IORESOURCE_MEM,
63	},
64	{
65		.start		= INT_RTC_TIMER,
66		.flags		= IORESOURCE_IRQ,
67	},
68	{
69		.start		= INT_RTC_ALARM,
70		.flags		= IORESOURCE_IRQ,
71	},
72};
73
74static struct platform_device omap_rtc_device = {
75	.name           = "omap_rtc",
76	.id             = -1,
77	.num_resources	= ARRAY_SIZE(rtc_resources),
78	.resource	= rtc_resources,
79};
80
81static void omap_init_rtc(void)
82{
83	(void) platform_device_register(&omap_rtc_device);
84}
85#else
86static inline void omap_init_rtc(void) {}
87#endif
88
89static inline void omap_init_mbox(void) { }
90
91/*-------------------------------------------------------------------------*/
92
93#if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
94
95static inline void omap1_mmc_mux(struct omap_mmc_platform_data *mmc_controller,
96			int controller_nr)
97{
98	if (controller_nr == 0) {
99		if (cpu_is_omap7xx()) {
100			omap_cfg_reg(MMC_7XX_CMD);
101			omap_cfg_reg(MMC_7XX_CLK);
102			omap_cfg_reg(MMC_7XX_DAT0);
103		} else {
104			omap_cfg_reg(MMC_CMD);
105			omap_cfg_reg(MMC_CLK);
106			omap_cfg_reg(MMC_DAT0);
107		}
108
109		if (cpu_is_omap1710()) {
110			omap_cfg_reg(M15_1710_MMC_CLKI);
111			omap_cfg_reg(P19_1710_MMC_CMDDIR);
112			omap_cfg_reg(P20_1710_MMC_DATDIR0);
113		}
114		if (mmc_controller->slots[0].wires == 4 && !cpu_is_omap7xx()) {
115			omap_cfg_reg(MMC_DAT1);
116			/* NOTE: DAT2 can be on W10 (here) or M15 */
117			if (!mmc_controller->slots[0].nomux)
118				omap_cfg_reg(MMC_DAT2);
119			omap_cfg_reg(MMC_DAT3);
120		}
121	}
122
123	/* Block 2 is on newer chips, and has many pinout options */
124	if (cpu_is_omap16xx() && controller_nr == 1) {
125		if (!mmc_controller->slots[1].nomux) {
126			omap_cfg_reg(Y8_1610_MMC2_CMD);
127			omap_cfg_reg(Y10_1610_MMC2_CLK);
128			omap_cfg_reg(R18_1610_MMC2_CLKIN);
129			omap_cfg_reg(W8_1610_MMC2_DAT0);
130			if (mmc_controller->slots[1].wires == 4) {
131				omap_cfg_reg(V8_1610_MMC2_DAT1);
132				omap_cfg_reg(W15_1610_MMC2_DAT2);
133				omap_cfg_reg(R10_1610_MMC2_DAT3);
134			}
135
136			/* These are needed for the level shifter */
137			omap_cfg_reg(V9_1610_MMC2_CMDDIR);
138			omap_cfg_reg(V5_1610_MMC2_DATDIR0);
139			omap_cfg_reg(W19_1610_MMC2_DATDIR1);
140		}
141
142		/* Feedback clock must be set on OMAP-1710 MMC2 */
143		if (cpu_is_omap1710())
144			omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
145					MOD_CONF_CTRL_1);
146	}
147}
148
149#define OMAP_MMC_NR_RES		4
150
151/*
152 * Register MMC devices.
153 */
154static int __init omap_mmc_add(const char *name, int id, unsigned long base,
155				unsigned long size, unsigned int irq,
156				unsigned rx_req, unsigned tx_req,
157				struct omap_mmc_platform_data *data)
158{
159	struct platform_device *pdev;
160	struct resource res[OMAP_MMC_NR_RES];
161	int ret;
162
163	pdev = platform_device_alloc(name, id);
164	if (!pdev)
165		return -ENOMEM;
166
167	memset(res, 0, OMAP_MMC_NR_RES * sizeof(struct resource));
168	res[0].start = base;
169	res[0].end = base + size - 1;
170	res[0].flags = IORESOURCE_MEM;
171	res[1].start = res[1].end = irq;
172	res[1].flags = IORESOURCE_IRQ;
173	res[2].start = rx_req;
174	res[2].name = "rx";
175	res[2].flags = IORESOURCE_DMA;
176	res[3].start = tx_req;
177	res[3].name = "tx";
178	res[3].flags = IORESOURCE_DMA;
179
180	if (cpu_is_omap7xx())
181		data->slots[0].features = MMC_OMAP7XX;
182	if (cpu_is_omap15xx())
183		data->slots[0].features = MMC_OMAP15XX;
184	if (cpu_is_omap16xx())
185		data->slots[0].features = MMC_OMAP16XX;
186
187	ret = platform_device_add_resources(pdev, res, ARRAY_SIZE(res));
188	if (ret == 0)
189		ret = platform_device_add_data(pdev, data, sizeof(*data));
190	if (ret)
191		goto fail;
192
193	ret = platform_device_add(pdev);
194	if (ret)
195		goto fail;
196
197	/* return device handle to board setup code */
198	data->dev = &pdev->dev;
199	return 0;
200
201fail:
202	platform_device_put(pdev);
203	return ret;
204}
205
206void __init omap1_init_mmc(struct omap_mmc_platform_data **mmc_data,
207			int nr_controllers)
208{
209	int i;
210
211	for (i = 0; i < nr_controllers; i++) {
212		unsigned long base, size;
213		unsigned rx_req, tx_req;
214		unsigned int irq = 0;
215
216		if (!mmc_data[i])
217			continue;
218
219		omap1_mmc_mux(mmc_data[i], i);
220
221		switch (i) {
222		case 0:
223			base = OMAP1_MMC1_BASE;
224			irq = INT_MMC;
225			rx_req = 22;
226			tx_req = 21;
227			break;
228		case 1:
229			if (!cpu_is_omap16xx())
230				return;
231			base = OMAP1_MMC2_BASE;
232			irq = INT_1610_MMC2;
233			rx_req = 55;
234			tx_req = 54;
235			break;
236		default:
237			continue;
238		}
239		size = OMAP1_MMC_SIZE;
240
241		omap_mmc_add("mmci-omap", i, base, size, irq,
242				rx_req, tx_req, mmc_data[i]);
243	}
244}
245
246#endif
247
248/*-------------------------------------------------------------------------*/
249
250/* OMAP7xx SPI support */
251#if defined(CONFIG_SPI_OMAP_100K) || defined(CONFIG_SPI_OMAP_100K_MODULE)
252
253struct platform_device omap_spi1 = {
254	.name           = "omap1_spi100k",
255	.id             = 1,
256};
257
258struct platform_device omap_spi2 = {
259	.name           = "omap1_spi100k",
260	.id             = 2,
261};
262
263static void omap_init_spi100k(void)
264{
265	omap_spi1.dev.platform_data = ioremap(OMAP7XX_SPI1_BASE, 0x7ff);
266	if (omap_spi1.dev.platform_data)
267		platform_device_register(&omap_spi1);
268
269	omap_spi2.dev.platform_data = ioremap(OMAP7XX_SPI2_BASE, 0x7ff);
270	if (omap_spi2.dev.platform_data)
271		platform_device_register(&omap_spi2);
272}
273
274#else
275static inline void omap_init_spi100k(void)
276{
277}
278#endif
279
280
281#define OMAP1_CAMERA_BASE	0xfffb6800
282#define OMAP1_CAMERA_IOSIZE	0x1c
283
284static struct resource omap1_camera_resources[] = {
285	[0] = {
286		.start	= OMAP1_CAMERA_BASE,
287		.end	= OMAP1_CAMERA_BASE + OMAP1_CAMERA_IOSIZE - 1,
288		.flags	= IORESOURCE_MEM,
289	},
290	[1] = {
291		.start	= INT_CAMERA,
292		.flags	= IORESOURCE_IRQ,
293	},
294};
295
296static u64 omap1_camera_dma_mask = DMA_BIT_MASK(32);
297
298static struct platform_device omap1_camera_device = {
299	.name		= "omap1-camera",
300	.id		= 0, /* This is used to put cameras on this interface */
301	.dev		= {
302		.dma_mask		= &omap1_camera_dma_mask,
303		.coherent_dma_mask	= DMA_BIT_MASK(32),
304	},
305	.num_resources	= ARRAY_SIZE(omap1_camera_resources),
306	.resource	= omap1_camera_resources,
307};
308
309void __init omap1_camera_init(void *info)
310{
311	struct platform_device *dev = &omap1_camera_device;
312	int ret;
313
314	dev->dev.platform_data = info;
315
316	ret = platform_device_register(dev);
317	if (ret)
318		dev_err(&dev->dev, "unable to register device: %d\n", ret);
319}
320
321
322/*-------------------------------------------------------------------------*/
323
324static inline void omap_init_sti(void) {}
325
326/* Numbering for the SPI-capable controllers when used for SPI:
327 * spi		= 1
328 * uwire	= 2
329 * mmc1..2	= 3..4
330 * mcbsp1..3	= 5..7
331 */
332
333#if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)
334
335#define	OMAP_UWIRE_BASE		0xfffb3000
336
337static struct resource uwire_resources[] = {
338	{
339		.start		= OMAP_UWIRE_BASE,
340		.end		= OMAP_UWIRE_BASE + 0x20,
341		.flags		= IORESOURCE_MEM,
342	},
343};
344
345static struct platform_device omap_uwire_device = {
346	.name	   = "omap_uwire",
347	.id	     = -1,
348	.num_resources	= ARRAY_SIZE(uwire_resources),
349	.resource	= uwire_resources,
350};
351
352static void omap_init_uwire(void)
353{
354	/* FIXME define and use a boot tag; not all boards will be hooking
355	 * up devices to the microwire controller, and multi-board configs
356	 * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
357	 */
358
359	/* board-specific code must configure chipselects (only a few
360	 * are normally used) and SCLK/SDI/SDO (each has two choices).
361	 */
362	(void) platform_device_register(&omap_uwire_device);
363}
364#else
365static inline void omap_init_uwire(void) {}
366#endif
367
368
369#define OMAP1_RNG_BASE		0xfffe5000
370
371static struct resource omap1_rng_resources[] = {
372	{
373		.start		= OMAP1_RNG_BASE,
374		.end		= OMAP1_RNG_BASE + 0x4f,
375		.flags		= IORESOURCE_MEM,
376	},
377};
378
379static struct platform_device omap1_rng_device = {
380	.name		= "omap_rng",
381	.id		= -1,
382	.num_resources	= ARRAY_SIZE(omap1_rng_resources),
383	.resource	= omap1_rng_resources,
384};
385
386static void omap1_init_rng(void)
387{
388	if (!cpu_is_omap16xx())
389		return;
390
391	(void) platform_device_register(&omap1_rng_device);
392}
393
394/*-------------------------------------------------------------------------*/
395
396/*
397 * This gets called after board-specific INIT_MACHINE, and initializes most
398 * on-chip peripherals accessible on this board (except for few like USB):
399 *
400 *  (a) Does any "standard config" pin muxing needed.  Board-specific
401 *	code will have muxed GPIO pins and done "nonstandard" setup;
402 *	that code could live in the boot loader.
403 *  (b) Populating board-specific platform_data with the data drivers
404 *	rely on to handle wiring variations.
405 *  (c) Creating platform devices as meaningful on this board and
406 *	with this kernel configuration.
407 *
408 * Claiming GPIOs, and setting their direction and initial values, is the
409 * responsibility of the device drivers.  So is responding to probe().
410 *
411 * Board-specific knowledge like creating devices or pin setup is to be
412 * kept out of drivers as much as possible.  In particular, pin setup
413 * may be handled by the boot loader, and drivers should expect it will
414 * normally have been done by the time they're probed.
415 */
416static int __init omap1_init_devices(void)
417{
418	if (!cpu_class_is_omap1())
419		return -ENODEV;
420
421	omap_sram_init();
422	omap1_clk_late_init();
423
424	/* please keep these calls, and their implementations above,
425	 * in alphabetical order so they're easier to sort through.
426	 */
427
428	omap_init_audio();
429	omap_init_mbox();
430	omap_init_rtc();
431	omap_init_spi100k();
432	omap_init_sti();
433	omap_init_uwire();
434	omap1_init_rng();
435
436	return 0;
437}
438arch_initcall(omap1_init_devices);
439
440#if defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
441
442static struct resource wdt_resources[] = {
443	{
444		.start		= 0xfffeb000,
445		.end		= 0xfffeb07F,
446		.flags		= IORESOURCE_MEM,
447	},
448};
449
450static struct platform_device omap_wdt_device = {
451	.name		= "omap_wdt",
452	.id		= -1,
453	.num_resources	= ARRAY_SIZE(wdt_resources),
454	.resource	= wdt_resources,
455};
456
457static int __init omap_init_wdt(void)
458{
459	struct omap_wd_timer_platform_data pdata;
460	int ret;
461
462	if (!cpu_is_omap16xx())
463		return -ENODEV;
464
465	pdata.read_reset_sources = omap1_get_reset_sources;
466
467	ret = platform_device_register(&omap_wdt_device);
468	if (!ret) {
469		ret = platform_device_add_data(&omap_wdt_device, &pdata,
470					       sizeof(pdata));
471		if (ret)
472			platform_device_del(&omap_wdt_device);
473	}
474
475	return ret;
476}
477subsys_initcall(omap_init_wdt);
478#endif
479