1/*
2 * linux/arch/arm/mach-omap2/board-omap3beagle.c
3 *
4 * Copyright (C) 2008 Texas Instruments
5 *
6 * Modified from mach-omap2/board-3430sdp.c
7 *
8 * Initial code: Syed Mohammed Khasim
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 */
14
15#include <linux/kernel.h>
16#include <linux/init.h>
17#include <linux/platform_device.h>
18#include <linux/delay.h>
19#include <linux/err.h>
20#include <linux/clk.h>
21#include <linux/io.h>
22#include <linux/leds.h>
23#include <linux/pwm.h>
24#include <linux/leds_pwm.h>
25#include <linux/gpio.h>
26#include <linux/input.h>
27#include <linux/gpio_keys.h>
28#include <linux/pm_opp.h>
29#include <linux/cpu.h>
30
31#include <linux/mtd/mtd.h>
32#include <linux/mtd/partitions.h>
33#include <linux/mtd/nand.h>
34#include <linux/mmc/host.h>
35#include <linux/usb/phy.h>
36
37#include <linux/regulator/machine.h>
38#include <linux/i2c/twl.h>
39
40#include <asm/mach-types.h>
41#include <asm/mach/arch.h>
42#include <asm/mach/map.h>
43#include <asm/mach/flash.h>
44
45#include <video/omapdss.h>
46#include <video/omap-panel-data.h>
47#include <linux/platform_data/mtd-nand-omap2.h>
48
49#include "common.h"
50#include "omap_device.h"
51#include "gpmc.h"
52#include "soc.h"
53#include "mux.h"
54#include "hsmmc.h"
55#include "pm.h"
56#include "board-flash.h"
57#include "common-board-devices.h"
58
59#define	NAND_CS	0
60
61static struct pwm_lookup pwm_lookup[] = {
62	/* LEDB -> PMU_STAT */
63	PWM_LOOKUP("twl-pwmled", 1, "leds_pwm", "beagleboard::pmu_stat",
64		   7812500, PWM_POLARITY_NORMAL),
65};
66
67static struct led_pwm pwm_leds[] = {
68	{
69		.name		= "beagleboard::pmu_stat",
70		.max_brightness	= 127,
71		.pwm_period_ns	= 7812500,
72	},
73};
74
75static struct led_pwm_platform_data pwm_data = {
76	.num_leds	= ARRAY_SIZE(pwm_leds),
77	.leds		= pwm_leds,
78};
79
80static struct platform_device leds_pwm = {
81	.name	= "leds_pwm",
82	.id	= -1,
83	.dev	= {
84		.platform_data = &pwm_data,
85	},
86};
87
88/*
89 * OMAP3 Beagle revision
90 * Run time detection of Beagle revision is done by reading GPIO.
91 * GPIO ID -
92 *	AXBX	= GPIO173, GPIO172, GPIO171: 1 1 1
93 *	C1_3	= GPIO173, GPIO172, GPIO171: 1 1 0
94 *	C4	= GPIO173, GPIO172, GPIO171: 1 0 1
95 *	XMA/XMB = GPIO173, GPIO172, GPIO171: 0 0 0
96 *	XMC = GPIO173, GPIO172, GPIO171: 0 1 0
97 */
98enum {
99	OMAP3BEAGLE_BOARD_UNKN = 0,
100	OMAP3BEAGLE_BOARD_AXBX,
101	OMAP3BEAGLE_BOARD_C1_3,
102	OMAP3BEAGLE_BOARD_C4,
103	OMAP3BEAGLE_BOARD_XM,
104	OMAP3BEAGLE_BOARD_XMC,
105};
106
107static u8 omap3_beagle_version;
108
109/*
110 * Board-specific configuration
111 * Defaults to BeagleBoard-xMC
112 */
113static struct {
114	int mmc1_gpio_wp;
115	bool usb_pwr_level;	/* 0 - Active Low, 1 - Active High */
116	int dvi_pd_gpio;
117	int usr_button_gpio;
118	int mmc_caps;
119} beagle_config = {
120	.mmc1_gpio_wp = -EINVAL,
121	.usb_pwr_level = 0,
122	.dvi_pd_gpio = -EINVAL,
123	.usr_button_gpio = 4,
124	.mmc_caps = MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
125};
126
127static struct gpio omap3_beagle_rev_gpios[] __initdata = {
128	{ 171, GPIOF_IN, "rev_id_0"    },
129	{ 172, GPIOF_IN, "rev_id_1" },
130	{ 173, GPIOF_IN, "rev_id_2"    },
131};
132
133static void __init omap3_beagle_init_rev(void)
134{
135	int ret;
136	u16 beagle_rev = 0;
137
138	omap_mux_init_gpio(171, OMAP_PIN_INPUT_PULLUP);
139	omap_mux_init_gpio(172, OMAP_PIN_INPUT_PULLUP);
140	omap_mux_init_gpio(173, OMAP_PIN_INPUT_PULLUP);
141
142	ret = gpio_request_array(omap3_beagle_rev_gpios,
143				 ARRAY_SIZE(omap3_beagle_rev_gpios));
144	if (ret < 0) {
145		printk(KERN_ERR "Unable to get revision detection GPIO pins\n");
146		omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
147		return;
148	}
149
150	beagle_rev = gpio_get_value(171) | (gpio_get_value(172) << 1)
151			| (gpio_get_value(173) << 2);
152
153	gpio_free_array(omap3_beagle_rev_gpios,
154			ARRAY_SIZE(omap3_beagle_rev_gpios));
155
156	switch (beagle_rev) {
157	case 7:
158		printk(KERN_INFO "OMAP3 Beagle Rev: Ax/Bx\n");
159		omap3_beagle_version = OMAP3BEAGLE_BOARD_AXBX;
160		beagle_config.mmc1_gpio_wp = 29;
161		beagle_config.dvi_pd_gpio = 170;
162		beagle_config.usr_button_gpio = 7;
163		break;
164	case 6:
165		printk(KERN_INFO "OMAP3 Beagle Rev: C1/C2/C3\n");
166		omap3_beagle_version = OMAP3BEAGLE_BOARD_C1_3;
167		beagle_config.mmc1_gpio_wp = 23;
168		beagle_config.dvi_pd_gpio = 170;
169		beagle_config.usr_button_gpio = 7;
170		break;
171	case 5:
172		printk(KERN_INFO "OMAP3 Beagle Rev: C4\n");
173		omap3_beagle_version = OMAP3BEAGLE_BOARD_C4;
174		beagle_config.mmc1_gpio_wp = 23;
175		beagle_config.dvi_pd_gpio = 170;
176		beagle_config.usr_button_gpio = 7;
177		break;
178	case 0:
179		printk(KERN_INFO "OMAP3 Beagle Rev: xM Ax/Bx\n");
180		omap3_beagle_version = OMAP3BEAGLE_BOARD_XM;
181		beagle_config.usb_pwr_level = 1;
182		beagle_config.mmc_caps &= ~MMC_CAP_8_BIT_DATA;
183		break;
184	case 2:
185		printk(KERN_INFO "OMAP3 Beagle Rev: xM C\n");
186		omap3_beagle_version = OMAP3BEAGLE_BOARD_XMC;
187		beagle_config.mmc_caps &= ~MMC_CAP_8_BIT_DATA;
188		break;
189	default:
190		printk(KERN_INFO "OMAP3 Beagle Rev: unknown %hd\n", beagle_rev);
191		omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
192	}
193}
194
195static struct mtd_partition omap3beagle_nand_partitions[] = {
196	/* All the partition sizes are listed in terms of NAND block size */
197	{
198		.name		= "X-Loader",
199		.offset		= 0,
200		.size		= 4 * NAND_BLOCK_SIZE,
201		.mask_flags	= MTD_WRITEABLE,	/* force read-only */
202	},
203	{
204		.name		= "U-Boot",
205		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x80000 */
206		.size		= 15 * NAND_BLOCK_SIZE,
207		.mask_flags	= MTD_WRITEABLE,	/* force read-only */
208	},
209	{
210		.name		= "U-Boot Env",
211		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x260000 */
212		.size		= 1 * NAND_BLOCK_SIZE,
213	},
214	{
215		.name		= "Kernel",
216		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x280000 */
217		.size		= 32 * NAND_BLOCK_SIZE,
218	},
219	{
220		.name		= "File System",
221		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x680000 */
222		.size		= MTDPART_SIZ_FULL,
223	},
224};
225
226/* DSS */
227
228static struct connector_dvi_platform_data beagle_dvi_connector_pdata = {
229	.name                   = "dvi",
230	.source                 = "tfp410.0",
231	.i2c_bus_num            = 3,
232};
233
234static struct platform_device beagle_dvi_connector_device = {
235	.name                   = "connector-dvi",
236	.id                     = 0,
237	.dev.platform_data      = &beagle_dvi_connector_pdata,
238};
239
240static struct encoder_tfp410_platform_data beagle_tfp410_pdata = {
241	.name                   = "tfp410.0",
242	.source                 = "dpi.0",
243	.data_lines             = 24,
244	.power_down_gpio        = -1,
245};
246
247static struct platform_device beagle_tfp410_device = {
248	.name                   = "tfp410",
249	.id                     = 0,
250	.dev.platform_data      = &beagle_tfp410_pdata,
251};
252
253static struct connector_atv_platform_data beagle_tv_pdata = {
254	.name = "tv",
255	.source = "venc.0",
256	.connector_type = OMAP_DSS_VENC_TYPE_SVIDEO,
257	.invert_polarity = false,
258};
259
260static struct platform_device beagle_tv_connector_device = {
261	.name                   = "connector-analog-tv",
262	.id                     = 0,
263	.dev.platform_data      = &beagle_tv_pdata,
264};
265
266static struct omap_dss_board_info beagle_dss_data = {
267	.default_display_name = "dvi",
268};
269
270#include "sdram-micron-mt46h32m32lf-6.h"
271
272static struct omap2_hsmmc_info mmc[] = {
273	{
274		.mmc		= 1,
275		.caps		= MMC_CAP_4_BIT_DATA,
276		.gpio_wp	= -EINVAL,
277		.deferred	= true,
278	},
279	{}	/* Terminator */
280};
281
282static struct regulator_consumer_supply beagle_vmmc1_supply[] = {
283	REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
284};
285
286static struct regulator_consumer_supply beagle_vsim_supply[] = {
287	REGULATOR_SUPPLY("vmmc_aux", "omap_hsmmc.0"),
288};
289
290static struct gpio_led gpio_leds[];
291
292static struct usbhs_phy_data phy_data[] = {
293	{
294		.port = 2,
295		.reset_gpio = 147,
296		.vcc_gpio = -1,		/* updated in beagle_twl_gpio_setup */
297		.vcc_polarity = 1,	/* updated in beagle_twl_gpio_setup */
298	},
299};
300
301static int beagle_twl_gpio_setup(struct device *dev,
302		unsigned gpio, unsigned ngpio)
303{
304	int r;
305
306	mmc[0].gpio_wp = beagle_config.mmc1_gpio_wp;
307	/* gpio + 0 is "mmc0_cd" (input/IRQ) */
308	mmc[0].gpio_cd = gpio + 0;
309	omap_hsmmc_late_init(mmc);
310
311	/*
312	 * TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, XM active
313	 * high / others active low)
314	 * DVI reset GPIO is different between beagle revisions
315	 */
316	/* Valid for all -xM revisions */
317	if (cpu_is_omap3630()) {
318		/*
319		 * gpio + 1 on Xm controls the TFP410's enable line (active low)
320		 * gpio + 2 control varies depending on the board rev as below:
321		 * P7/P8 revisions(prototype): Camera EN
322		 * A2+ revisions (production): LDO (DVI, serial, led blocks)
323		 */
324		r = gpio_request_one(gpio + 1, GPIOF_OUT_INIT_LOW,
325				     "nDVI_PWR_EN");
326		if (r)
327			pr_err("%s: unable to configure nDVI_PWR_EN\n",
328				__func__);
329
330		beagle_config.dvi_pd_gpio = gpio + 2;
331
332	} else {
333		/*
334		 * REVISIT: need ehci-omap hooks for external VBUS
335		 * power switch and overcurrent detect
336		 */
337		if (gpio_request_one(gpio + 1, GPIOF_IN, "EHCI_nOC"))
338			pr_err("%s: unable to configure EHCI_nOC\n", __func__);
339	}
340	beagle_tfp410_pdata.power_down_gpio = beagle_config.dvi_pd_gpio;
341
342	platform_device_register(&beagle_tfp410_device);
343	platform_device_register(&beagle_dvi_connector_device);
344	platform_device_register(&beagle_tv_connector_device);
345
346	/* TWL4030_GPIO_MAX i.e. LED_GPO controls HS USB Port 2 power */
347	phy_data[0].vcc_gpio = gpio + TWL4030_GPIO_MAX;
348	phy_data[0].vcc_polarity = beagle_config.usb_pwr_level;
349
350	usbhs_init_phys(phy_data, ARRAY_SIZE(phy_data));
351	return 0;
352}
353
354static struct twl4030_gpio_platform_data beagle_gpio_data = {
355	.use_leds	= true,
356	.pullups	= BIT(1),
357	.pulldowns	= BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
358				| BIT(15) | BIT(16) | BIT(17),
359	.setup		= beagle_twl_gpio_setup,
360};
361
362/* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
363static struct regulator_init_data beagle_vmmc1 = {
364	.constraints = {
365		.min_uV			= 1850000,
366		.max_uV			= 3150000,
367		.valid_modes_mask	= REGULATOR_MODE_NORMAL
368					| REGULATOR_MODE_STANDBY,
369		.valid_ops_mask		= REGULATOR_CHANGE_VOLTAGE
370					| REGULATOR_CHANGE_MODE
371					| REGULATOR_CHANGE_STATUS,
372	},
373	.num_consumer_supplies	= ARRAY_SIZE(beagle_vmmc1_supply),
374	.consumer_supplies	= beagle_vmmc1_supply,
375};
376
377/* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
378static struct regulator_init_data beagle_vsim = {
379	.constraints = {
380		.min_uV			= 1800000,
381		.max_uV			= 3000000,
382		.valid_modes_mask	= REGULATOR_MODE_NORMAL
383					| REGULATOR_MODE_STANDBY,
384		.valid_ops_mask		= REGULATOR_CHANGE_VOLTAGE
385					| REGULATOR_CHANGE_MODE
386					| REGULATOR_CHANGE_STATUS,
387	},
388	.num_consumer_supplies	= ARRAY_SIZE(beagle_vsim_supply),
389	.consumer_supplies	= beagle_vsim_supply,
390};
391
392static struct twl4030_platform_data beagle_twldata = {
393	/* platform_data for children goes here */
394	.gpio		= &beagle_gpio_data,
395	.vmmc1		= &beagle_vmmc1,
396	.vsim		= &beagle_vsim,
397};
398
399static struct i2c_board_info __initdata beagle_i2c_eeprom[] = {
400       {
401               I2C_BOARD_INFO("eeprom", 0x50),
402       },
403};
404
405static int __init omap3_beagle_i2c_init(void)
406{
407	omap3_pmic_get_config(&beagle_twldata,
408			TWL_COMMON_PDATA_USB | TWL_COMMON_PDATA_MADC |
409			TWL_COMMON_PDATA_AUDIO,
410			TWL_COMMON_REGULATOR_VDAC | TWL_COMMON_REGULATOR_VPLL2);
411
412	beagle_twldata.vpll2->constraints.name = "VDVI";
413
414	omap3_pmic_init("twl4030", &beagle_twldata);
415	/* Bus 3 is attached to the DVI port where devices like the pico DLP
416	 * projector don't work reliably with 400kHz */
417	omap_register_i2c_bus(3, 100, beagle_i2c_eeprom, ARRAY_SIZE(beagle_i2c_eeprom));
418	return 0;
419}
420
421static struct gpio_led gpio_leds[] = {
422	{
423		.name			= "beagleboard::usr0",
424		.default_trigger	= "heartbeat",
425		.gpio			= 150,
426	},
427	{
428		.name			= "beagleboard::usr1",
429		.default_trigger	= "mmc0",
430		.gpio			= 149,
431	},
432};
433
434static struct gpio_led_platform_data gpio_led_info = {
435	.leds		= gpio_leds,
436	.num_leds	= ARRAY_SIZE(gpio_leds),
437};
438
439static struct platform_device leds_gpio = {
440	.name	= "leds-gpio",
441	.id	= -1,
442	.dev	= {
443		.platform_data	= &gpio_led_info,
444	},
445};
446
447static struct gpio_keys_button gpio_buttons[] = {
448	{
449		.code			= BTN_EXTRA,
450		/* Dynamically assigned depending on board */
451		.gpio			= -EINVAL,
452		.desc			= "user",
453		.wakeup			= 1,
454	},
455};
456
457static struct gpio_keys_platform_data gpio_key_info = {
458	.buttons	= gpio_buttons,
459	.nbuttons	= ARRAY_SIZE(gpio_buttons),
460};
461
462static struct platform_device keys_gpio = {
463	.name	= "gpio-keys",
464	.id	= -1,
465	.dev	= {
466		.platform_data	= &gpio_key_info,
467	},
468};
469
470static struct platform_device madc_hwmon = {
471	.name	= "twl4030_madc_hwmon",
472	.id	= -1,
473};
474
475static struct platform_device *omap3_beagle_devices[] __initdata = {
476	&leds_gpio,
477	&keys_gpio,
478	&madc_hwmon,
479	&leds_pwm,
480};
481
482static struct usbhs_omap_platform_data usbhs_bdata __initdata = {
483	.port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
484};
485
486#ifdef CONFIG_OMAP_MUX
487static struct omap_board_mux board_mux[] __initdata = {
488	{ .reg_offset = OMAP_MUX_TERMINATOR },
489};
490#endif
491
492static int __init beagle_opp_init(void)
493{
494	int r = 0;
495
496	if (!machine_is_omap3_beagle())
497		return 0;
498
499	/* Initialize the omap3 opp table if not already created. */
500	r = omap3_opp_init();
501	if (r < 0 && (r != -EEXIST)) {
502		pr_err("%s: opp default init failed\n", __func__);
503		return r;
504	}
505
506	/* Custom OPP enabled for all xM versions */
507	if (cpu_is_omap3630()) {
508		struct device *mpu_dev, *iva_dev;
509
510		mpu_dev = get_cpu_device(0);
511		iva_dev = omap_device_get_by_hwmod_name("iva");
512
513		if (!mpu_dev || IS_ERR(iva_dev)) {
514			pr_err("%s: Aiee.. no mpu/dsp devices? %p %p\n",
515				__func__, mpu_dev, iva_dev);
516			return -ENODEV;
517		}
518		/* Enable MPU 1GHz and lower opps */
519		r = dev_pm_opp_enable(mpu_dev, 800000000);
520		/* TODO: MPU 1GHz needs SR and ABB */
521
522		/* Enable IVA 800MHz and lower opps */
523		r |= dev_pm_opp_enable(iva_dev, 660000000);
524		/* TODO: DSP 800MHz needs SR and ABB */
525		if (r) {
526			pr_err("%s: failed to enable higher opp %d\n",
527				__func__, r);
528			/*
529			 * Cleanup - disable the higher freqs - we dont care
530			 * about the results
531			 */
532			dev_pm_opp_disable(mpu_dev, 800000000);
533			dev_pm_opp_disable(iva_dev, 660000000);
534		}
535	}
536	return 0;
537}
538omap_device_initcall(beagle_opp_init);
539
540static void __init omap3_beagle_init(void)
541{
542	omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
543	omap3_beagle_init_rev();
544
545	if (gpio_is_valid(beagle_config.mmc1_gpio_wp))
546		omap_mux_init_gpio(beagle_config.mmc1_gpio_wp, OMAP_PIN_INPUT);
547	mmc[0].caps = beagle_config.mmc_caps;
548	omap_hsmmc_init(mmc);
549
550	omap3_beagle_i2c_init();
551
552	gpio_buttons[0].gpio = beagle_config.usr_button_gpio;
553
554	platform_add_devices(omap3_beagle_devices,
555			ARRAY_SIZE(omap3_beagle_devices));
556	if (gpio_is_valid(beagle_config.dvi_pd_gpio))
557		omap_mux_init_gpio(beagle_config.dvi_pd_gpio, OMAP_PIN_OUTPUT);
558	omap_display_init(&beagle_dss_data);
559
560	omap_serial_init();
561	omap_sdrc_init(mt46h32m32lf6_sdrc_params,
562				  mt46h32m32lf6_sdrc_params);
563
564	usb_bind_phy("musb-hdrc.0.auto", 0, "twl4030_usb");
565	usb_musb_init(NULL);
566
567	usbhs_init(&usbhs_bdata);
568
569	board_nand_init(omap3beagle_nand_partitions,
570			ARRAY_SIZE(omap3beagle_nand_partitions), NAND_CS,
571			NAND_BUSWIDTH_16, NULL);
572	omap_twl4030_audio_init("omap3beagle", NULL);
573
574	/* Ensure msecure is mux'd to be able to set the RTC. */
575	omap_mux_init_signal("sys_drm_msecure", OMAP_PIN_OFF_OUTPUT_HIGH);
576
577	/* Ensure SDRC pins are mux'd for self-refresh */
578	omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
579	omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
580
581	pwm_add_table(pwm_lookup, ARRAY_SIZE(pwm_lookup));
582}
583
584MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board")
585	/* Maintainer: Syed Mohammed Khasim - http://beagleboard.org */
586	.atag_offset	= 0x100,
587	.reserve	= omap_reserve,
588	.map_io		= omap3_map_io,
589	.init_early	= omap3_init_early,
590	.init_irq	= omap3_init_irq,
591	.init_machine	= omap3_beagle_init,
592	.init_late	= omap3_init_late,
593	.init_time	= omap3_secure_sync32k_timer_init,
594	.restart	= omap3xxx_restart,
595MACHINE_END
596