PageRenderTime 59ms CodeModel.GetById 11ms app.highlight 43ms RepoModel.GetById 1ms app.codeStats 0ms

/arch/arm/mach-omap2/board-omap3beagle.c

https://github.com/AICP/kernel_asus_grouper
C | 567 lines | 425 code | 75 blank | 67 comment | 17 complexity | f04251499d392ad2f258b3e589dd8593 MD5 | raw file
  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/gpio.h>
 24#include <linux/input.h>
 25#include <linux/gpio_keys.h>
 26#include <linux/opp.h>
 27
 28#include <linux/mtd/mtd.h>
 29#include <linux/mtd/partitions.h>
 30#include <linux/mtd/nand.h>
 31#include <linux/mmc/host.h>
 32
 33#include <linux/regulator/machine.h>
 34#include <linux/i2c/twl.h>
 35
 36#include <mach/hardware.h>
 37#include <asm/mach-types.h>
 38#include <asm/mach/arch.h>
 39#include <asm/mach/map.h>
 40#include <asm/mach/flash.h>
 41
 42#include <plat/board.h>
 43#include <plat/common.h>
 44#include <video/omapdss.h>
 45#include <video/omap-panel-generic-dpi.h>
 46#include <plat/gpmc.h>
 47#include <plat/nand.h>
 48#include <plat/usb.h>
 49#include <plat/omap_device.h>
 50
 51#include "mux.h"
 52#include "hsmmc.h"
 53#include "pm.h"
 54#include "common-board-devices.h"
 55
 56/*
 57 * OMAP3 Beagle revision
 58 * Run time detection of Beagle revision is done by reading GPIO.
 59 * GPIO ID -
 60 *	AXBX	= GPIO173, GPIO172, GPIO171: 1 1 1
 61 *	C1_3	= GPIO173, GPIO172, GPIO171: 1 1 0
 62 *	C4	= GPIO173, GPIO172, GPIO171: 1 0 1
 63 *	XMA/XMB = GPIO173, GPIO172, GPIO171: 0 0 0
 64 *	XMC = GPIO173, GPIO172, GPIO171: 0 1 0
 65 */
 66enum {
 67	OMAP3BEAGLE_BOARD_UNKN = 0,
 68	OMAP3BEAGLE_BOARD_AXBX,
 69	OMAP3BEAGLE_BOARD_C1_3,
 70	OMAP3BEAGLE_BOARD_C4,
 71	OMAP3BEAGLE_BOARD_XM,
 72	OMAP3BEAGLE_BOARD_XMC,
 73};
 74
 75static u8 omap3_beagle_version;
 76
 77/*
 78 * Board-specific configuration
 79 * Defaults to BeagleBoard-xMC
 80 */
 81static struct {
 82	int mmc1_gpio_wp;
 83	int usb_pwr_level;
 84	int reset_gpio;
 85	int usr_button_gpio;
 86} beagle_config = {
 87	.mmc1_gpio_wp = -EINVAL,
 88	.usb_pwr_level = GPIOF_OUT_INIT_LOW,
 89	.reset_gpio = 129,
 90	.usr_button_gpio = 4,
 91};
 92
 93static struct gpio omap3_beagle_rev_gpios[] __initdata = {
 94	{ 171, GPIOF_IN, "rev_id_0"    },
 95	{ 172, GPIOF_IN, "rev_id_1" },
 96	{ 173, GPIOF_IN, "rev_id_2"    },
 97};
 98
 99static void __init omap3_beagle_init_rev(void)
100{
101	int ret;
102	u16 beagle_rev = 0;
103
104	omap_mux_init_gpio(171, OMAP_PIN_INPUT_PULLUP);
105	omap_mux_init_gpio(172, OMAP_PIN_INPUT_PULLUP);
106	omap_mux_init_gpio(173, OMAP_PIN_INPUT_PULLUP);
107
108	ret = gpio_request_array(omap3_beagle_rev_gpios,
109				 ARRAY_SIZE(omap3_beagle_rev_gpios));
110	if (ret < 0) {
111		printk(KERN_ERR "Unable to get revision detection GPIO pins\n");
112		omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
113		return;
114	}
115
116	beagle_rev = gpio_get_value(171) | (gpio_get_value(172) << 1)
117			| (gpio_get_value(173) << 2);
118
119	gpio_free_array(omap3_beagle_rev_gpios,
120			ARRAY_SIZE(omap3_beagle_rev_gpios));
121
122	switch (beagle_rev) {
123	case 7:
124		printk(KERN_INFO "OMAP3 Beagle Rev: Ax/Bx\n");
125		omap3_beagle_version = OMAP3BEAGLE_BOARD_AXBX;
126		beagle_config.mmc1_gpio_wp = 29;
127		beagle_config.reset_gpio = 170;
128		beagle_config.usr_button_gpio = 7;
129		break;
130	case 6:
131		printk(KERN_INFO "OMAP3 Beagle Rev: C1/C2/C3\n");
132		omap3_beagle_version = OMAP3BEAGLE_BOARD_C1_3;
133		beagle_config.mmc1_gpio_wp = 23;
134		beagle_config.reset_gpio = 170;
135		beagle_config.usr_button_gpio = 7;
136		break;
137	case 5:
138		printk(KERN_INFO "OMAP3 Beagle Rev: C4\n");
139		omap3_beagle_version = OMAP3BEAGLE_BOARD_C4;
140		beagle_config.mmc1_gpio_wp = 23;
141		beagle_config.reset_gpio = 170;
142		beagle_config.usr_button_gpio = 7;
143		break;
144	case 0:
145		printk(KERN_INFO "OMAP3 Beagle Rev: xM Ax/Bx\n");
146		omap3_beagle_version = OMAP3BEAGLE_BOARD_XM;
147		beagle_config.usb_pwr_level = GPIOF_OUT_INIT_HIGH;
148		break;
149	case 2:
150		printk(KERN_INFO "OMAP3 Beagle Rev: xM C\n");
151		omap3_beagle_version = OMAP3BEAGLE_BOARD_XMC;
152		break;
153	default:
154		printk(KERN_INFO "OMAP3 Beagle Rev: unknown %hd\n", beagle_rev);
155		omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
156	}
157}
158
159static struct mtd_partition omap3beagle_nand_partitions[] = {
160	/* All the partition sizes are listed in terms of NAND block size */
161	{
162		.name		= "X-Loader",
163		.offset		= 0,
164		.size		= 4 * NAND_BLOCK_SIZE,
165		.mask_flags	= MTD_WRITEABLE,	/* force read-only */
166	},
167	{
168		.name		= "U-Boot",
169		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x80000 */
170		.size		= 15 * NAND_BLOCK_SIZE,
171		.mask_flags	= MTD_WRITEABLE,	/* force read-only */
172	},
173	{
174		.name		= "U-Boot Env",
175		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x260000 */
176		.size		= 1 * NAND_BLOCK_SIZE,
177	},
178	{
179		.name		= "Kernel",
180		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x280000 */
181		.size		= 32 * NAND_BLOCK_SIZE,
182	},
183	{
184		.name		= "File System",
185		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x680000 */
186		.size		= MTDPART_SIZ_FULL,
187	},
188};
189
190/* DSS */
191
192static int beagle_enable_dvi(struct omap_dss_device *dssdev)
193{
194	if (gpio_is_valid(dssdev->reset_gpio))
195		gpio_set_value(dssdev->reset_gpio, 1);
196
197	return 0;
198}
199
200static void beagle_disable_dvi(struct omap_dss_device *dssdev)
201{
202	if (gpio_is_valid(dssdev->reset_gpio))
203		gpio_set_value(dssdev->reset_gpio, 0);
204}
205
206static struct panel_generic_dpi_data dvi_panel = {
207	.name = "generic",
208	.platform_enable = beagle_enable_dvi,
209	.platform_disable = beagle_disable_dvi,
210};
211
212static struct omap_dss_device beagle_dvi_device = {
213	.type = OMAP_DISPLAY_TYPE_DPI,
214	.name = "dvi",
215	.driver_name = "generic_dpi_panel",
216	.data = &dvi_panel,
217	.phy.dpi.data_lines = 24,
218	.reset_gpio = -EINVAL,
219};
220
221static struct omap_dss_device beagle_tv_device = {
222	.name = "tv",
223	.driver_name = "venc",
224	.type = OMAP_DISPLAY_TYPE_VENC,
225	.phy.venc.type = OMAP_DSS_VENC_TYPE_SVIDEO,
226};
227
228static struct omap_dss_device *beagle_dss_devices[] = {
229	&beagle_dvi_device,
230	&beagle_tv_device,
231};
232
233static struct omap_dss_board_info beagle_dss_data = {
234	.num_devices = ARRAY_SIZE(beagle_dss_devices),
235	.devices = beagle_dss_devices,
236	.default_device = &beagle_dvi_device,
237};
238
239static void __init beagle_display_init(void)
240{
241	int r;
242
243	r = gpio_request_one(beagle_dvi_device.reset_gpio, GPIOF_OUT_INIT_LOW,
244			     "DVI reset");
245	if (r < 0)
246		printk(KERN_ERR "Unable to get DVI reset GPIO\n");
247}
248
249#include "sdram-micron-mt46h32m32lf-6.h"
250
251static struct omap2_hsmmc_info mmc[] = {
252	{
253		.mmc		= 1,
254		.caps		= MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
255		.gpio_wp	= -EINVAL,
256	},
257	{}	/* Terminator */
258};
259
260static struct regulator_consumer_supply beagle_vmmc1_supply[] = {
261	REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
262};
263
264static struct regulator_consumer_supply beagle_vsim_supply[] = {
265	REGULATOR_SUPPLY("vmmc_aux", "omap_hsmmc.0"),
266};
267
268static struct gpio_led gpio_leds[];
269
270static int beagle_twl_gpio_setup(struct device *dev,
271		unsigned gpio, unsigned ngpio)
272{
273	int r;
274
275	if (beagle_config.mmc1_gpio_wp != -EINVAL)
276		omap_mux_init_gpio(beagle_config.mmc1_gpio_wp, OMAP_PIN_INPUT);
277	mmc[0].gpio_wp = beagle_config.mmc1_gpio_wp;
278	/* gpio + 0 is "mmc0_cd" (input/IRQ) */
279	mmc[0].gpio_cd = gpio + 0;
280	omap2_hsmmc_init(mmc);
281
282	/*
283	 * TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, XM active
284	 * high / others active low)
285	 * DVI reset GPIO is different between beagle revisions
286	 */
287	/* Valid for all -xM revisions */
288	if (cpu_is_omap3630()) {
289		/*
290		 * gpio + 1 on Xm controls the TFP410's enable line (active low)
291		 * gpio + 2 control varies depending on the board rev as below:
292		 * P7/P8 revisions(prototype): Camera EN
293		 * A2+ revisions (production): LDO (DVI, serial, led blocks)
294		 */
295		r = gpio_request_one(gpio + 1, GPIOF_OUT_INIT_LOW,
296				     "nDVI_PWR_EN");
297		if (r)
298			pr_err("%s: unable to configure nDVI_PWR_EN\n",
299				__func__);
300		r = gpio_request_one(gpio + 2, GPIOF_OUT_INIT_HIGH,
301				     "DVI_LDO_EN");
302		if (r)
303			pr_err("%s: unable to configure DVI_LDO_EN\n",
304				__func__);
305	} else {
306		/*
307		 * REVISIT: need ehci-omap hooks for external VBUS
308		 * power switch and overcurrent detect
309		 */
310		if (gpio_request_one(gpio + 1, GPIOF_IN, "EHCI_nOC"))
311			pr_err("%s: unable to configure EHCI_nOC\n", __func__);
312	}
313	beagle_dvi_device.reset_gpio = beagle_config.reset_gpio;
314
315	gpio_request_one(gpio + TWL4030_GPIO_MAX, beagle_config.usb_pwr_level,
316			"nEN_USB_PWR");
317
318	/* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
319	gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
320
321	return 0;
322}
323
324static struct twl4030_gpio_platform_data beagle_gpio_data = {
325	.gpio_base	= OMAP_MAX_GPIO_LINES,
326	.irq_base	= TWL4030_GPIO_IRQ_BASE,
327	.irq_end	= TWL4030_GPIO_IRQ_END,
328	.use_leds	= true,
329	.pullups	= BIT(1),
330	.pulldowns	= BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
331				| BIT(15) | BIT(16) | BIT(17),
332	.setup		= beagle_twl_gpio_setup,
333};
334
335/* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
336static struct regulator_init_data beagle_vmmc1 = {
337	.constraints = {
338		.min_uV			= 1850000,
339		.max_uV			= 3150000,
340		.valid_modes_mask	= REGULATOR_MODE_NORMAL
341					| REGULATOR_MODE_STANDBY,
342		.valid_ops_mask		= REGULATOR_CHANGE_VOLTAGE
343					| REGULATOR_CHANGE_MODE
344					| REGULATOR_CHANGE_STATUS,
345	},
346	.num_consumer_supplies	= ARRAY_SIZE(beagle_vmmc1_supply),
347	.consumer_supplies	= beagle_vmmc1_supply,
348};
349
350/* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
351static struct regulator_init_data beagle_vsim = {
352	.constraints = {
353		.min_uV			= 1800000,
354		.max_uV			= 3000000,
355		.valid_modes_mask	= REGULATOR_MODE_NORMAL
356					| REGULATOR_MODE_STANDBY,
357		.valid_ops_mask		= REGULATOR_CHANGE_VOLTAGE
358					| REGULATOR_CHANGE_MODE
359					| REGULATOR_CHANGE_STATUS,
360	},
361	.num_consumer_supplies	= ARRAY_SIZE(beagle_vsim_supply),
362	.consumer_supplies	= beagle_vsim_supply,
363};
364
365static struct twl4030_platform_data beagle_twldata = {
366	/* platform_data for children goes here */
367	.gpio		= &beagle_gpio_data,
368	.vmmc1		= &beagle_vmmc1,
369	.vsim		= &beagle_vsim,
370};
371
372static struct i2c_board_info __initdata beagle_i2c_eeprom[] = {
373       {
374               I2C_BOARD_INFO("eeprom", 0x50),
375       },
376};
377
378static int __init omap3_beagle_i2c_init(void)
379{
380	omap3_pmic_get_config(&beagle_twldata,
381			TWL_COMMON_PDATA_USB | TWL_COMMON_PDATA_AUDIO,
382			TWL_COMMON_REGULATOR_VDAC | TWL_COMMON_REGULATOR_VPLL2);
383
384	beagle_twldata.vpll2->constraints.name = "VDVI";
385
386	omap3_pmic_init("twl4030", &beagle_twldata);
387	/* Bus 3 is attached to the DVI port where devices like the pico DLP
388	 * projector don't work reliably with 400kHz */
389	omap_register_i2c_bus(3, 100, beagle_i2c_eeprom, ARRAY_SIZE(beagle_i2c_eeprom));
390	return 0;
391}
392
393static struct gpio_led gpio_leds[] = {
394	{
395		.name			= "beagleboard::usr0",
396		.default_trigger	= "heartbeat",
397		.gpio			= 150,
398	},
399	{
400		.name			= "beagleboard::usr1",
401		.default_trigger	= "mmc0",
402		.gpio			= 149,
403	},
404	{
405		.name			= "beagleboard::pmu_stat",
406		.gpio			= -EINVAL,	/* gets replaced */
407		.active_low		= true,
408	},
409};
410
411static struct gpio_led_platform_data gpio_led_info = {
412	.leds		= gpio_leds,
413	.num_leds	= ARRAY_SIZE(gpio_leds),
414};
415
416static struct platform_device leds_gpio = {
417	.name	= "leds-gpio",
418	.id	= -1,
419	.dev	= {
420		.platform_data	= &gpio_led_info,
421	},
422};
423
424static struct gpio_keys_button gpio_buttons[] = {
425	{
426		.code			= BTN_EXTRA,
427		/* Dynamically assigned depending on board */
428		.gpio			= -EINVAL,
429		.desc			= "user",
430		.wakeup			= 1,
431	},
432};
433
434static struct gpio_keys_platform_data gpio_key_info = {
435	.buttons	= gpio_buttons,
436	.nbuttons	= ARRAY_SIZE(gpio_buttons),
437};
438
439static struct platform_device keys_gpio = {
440	.name	= "gpio-keys",
441	.id	= -1,
442	.dev	= {
443		.platform_data	= &gpio_key_info,
444	},
445};
446
447static void __init omap3_beagle_init_early(void)
448{
449	omap2_init_common_infrastructure();
450	omap2_init_common_devices(mt46h32m32lf6_sdrc_params,
451				  mt46h32m32lf6_sdrc_params);
452}
453
454static void __init omap3_beagle_init_irq(void)
455{
456	omap3_init_irq();
457}
458
459static struct platform_device *omap3_beagle_devices[] __initdata = {
460	&leds_gpio,
461	&keys_gpio,
462};
463
464static const struct usbhs_omap_board_data usbhs_bdata __initconst = {
465
466	.port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
467	.port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
468	.port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
469
470	.phy_reset  = true,
471	.reset_gpio_port[0]  = -EINVAL,
472	.reset_gpio_port[1]  = 147,
473	.reset_gpio_port[2]  = -EINVAL
474};
475
476#ifdef CONFIG_OMAP_MUX
477static struct omap_board_mux board_mux[] __initdata = {
478	{ .reg_offset = OMAP_MUX_TERMINATOR },
479};
480#endif
481
482static void __init beagle_opp_init(void)
483{
484	int r = 0;
485
486	/* Initialize the omap3 opp table */
487	if (omap3_opp_init()) {
488		pr_err("%s: opp default init failed\n", __func__);
489		return;
490	}
491
492	/* Custom OPP enabled for all xM versions */
493	if (cpu_is_omap3630()) {
494		struct device *mpu_dev, *iva_dev;
495
496		mpu_dev = omap2_get_mpuss_device();
497		iva_dev = omap2_get_iva_device();
498
499		if (!mpu_dev || !iva_dev) {
500			pr_err("%s: Aiee.. no mpu/dsp devices? %p %p\n",
501				__func__, mpu_dev, iva_dev);
502			return;
503		}
504		/* Enable MPU 1GHz and lower opps */
505		r = opp_enable(mpu_dev, 800000000);
506		/* TODO: MPU 1GHz needs SR and ABB */
507
508		/* Enable IVA 800MHz and lower opps */
509		r |= opp_enable(iva_dev, 660000000);
510		/* TODO: DSP 800MHz needs SR and ABB */
511		if (r) {
512			pr_err("%s: failed to enable higher opp %d\n",
513				__func__, r);
514			/*
515			 * Cleanup - disable the higher freqs - we dont care
516			 * about the results
517			 */
518			opp_disable(mpu_dev, 800000000);
519			opp_disable(iva_dev, 660000000);
520		}
521	}
522	return;
523}
524
525static void __init omap3_beagle_init(void)
526{
527	omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
528	omap3_beagle_init_rev();
529	omap3_beagle_i2c_init();
530
531	gpio_buttons[0].gpio = beagle_config.usr_button_gpio;
532
533	platform_add_devices(omap3_beagle_devices,
534			ARRAY_SIZE(omap3_beagle_devices));
535	omap_display_init(&beagle_dss_data);
536	omap_serial_init();
537
538	omap_mux_init_gpio(170, OMAP_PIN_INPUT);
539	/* REVISIT leave DVI powered down until it's needed ... */
540	gpio_request_one(170, GPIOF_OUT_INIT_HIGH, "DVI_nPD");
541
542	usb_musb_init(NULL);
543	usbhs_init(&usbhs_bdata);
544	omap_nand_flash_init(NAND_BUSWIDTH_16, omap3beagle_nand_partitions,
545			     ARRAY_SIZE(omap3beagle_nand_partitions));
546
547	/* Ensure msecure is mux'd to be able to set the RTC. */
548	omap_mux_init_signal("sys_drm_msecure", OMAP_PIN_OFF_OUTPUT_HIGH);
549
550	/* Ensure SDRC pins are mux'd for self-refresh */
551	omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
552	omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
553
554	beagle_display_init();
555	beagle_opp_init();
556}
557
558MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board")
559	/* Maintainer: Syed Mohammed Khasim - http://beagleboard.org */
560	.boot_params	= 0x80000100,
561	.reserve	= omap_reserve,
562	.map_io		= omap3_map_io,
563	.init_early	= omap3_beagle_init_early,
564	.init_irq	= omap3_beagle_init_irq,
565	.init_machine	= omap3_beagle_init,
566	.timer		= &omap3_secure_timer,
567MACHINE_END