litmus-rt.git - The LITMUS^RT kernel.

The LITMUS^RT kernel.

Bjoern Brandenburg

about summary refs log tree commit diff stats

path: root/tools/perf/scripts/python/bin

diff options

author	Chen Gang <gang.chen@asianux.com>	2013-02-26 23:27:30 -0500
committer	Rafael J. Wysocki <rafael.j.wysocki@intel.com>	2013-03-04 08:23:39 -0500
commit	9b27516fcd7ab7dc416edf418446c24c61729938 (patch)
tree	c302ac2ae550bcf3ab376231a31a2f520be87cc6 /tools/perf/scripts/python/bin
parent	5273a258373a84bbbcbccabb356de5b68e2b8931 (diff)

ACPI / porocessor: Beautify code, pr->id is u32 which is never < 0

pr->id is u32 which never < 0, so remove the redundant pr->id < 0 check from acpi_processor_add(). [rjw: Changelog] Signed-off-by: Chen Gang <gang.chen@asianux.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Diffstat (limited to 'tools/perf/scripts/python/bin')

0 files changed, 0 insertions, 0 deletions

'>278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975

/*
 * linux/arch/arm/plat-omap/mcbsp.c
 *
 * Copyright (C) 2004 Nokia Corporation
 * Author: Samuel Ortiz <samuel.ortiz@nokia.com>
 *
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * Multichannel mode not supported.
 */

#include <linux/module.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/wait.h>
#include <linux/completion.h>
#include <linux/interrupt.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/io.h>

#include <mach/dma.h>
#include <mach/mcbsp.h>

struct omap_mcbsp **mcbsp_ptr;
int omap_mcbsp_count;

void omap_mcbsp_write(void __iomem *io_base, u16 reg, u32 val)
{
	if (cpu_class_is_omap1() || cpu_is_omap2420())
		__raw_writew((u16)val, io_base + reg);
	else
		__raw_writel(val, io_base + reg);
}

int omap_mcbsp_read(void __iomem *io_base, u16 reg)
{
	if (cpu_class_is_omap1() || cpu_is_omap2420())
		return __raw_readw(io_base + reg);
	else
		return __raw_readl(io_base + reg);
}

#define OMAP_MCBSP_READ(base, reg) \
			omap_mcbsp_read(base, OMAP_MCBSP_REG_##reg)
#define OMAP_MCBSP_WRITE(base, reg, val) \
			omap_mcbsp_write(base, OMAP_MCBSP_REG_##reg, val)

#define omap_mcbsp_check_valid_id(id)	(id < omap_mcbsp_count)
#define id_to_mcbsp_ptr(id)		mcbsp_ptr[id];

static void omap_mcbsp_dump_reg(u8 id)
{
	struct omap_mcbsp *mcbsp = id_to_mcbsp_ptr(id);

	dev_dbg(mcbsp->dev, "**** McBSP%d regs ****\n", mcbsp->id);
	dev_dbg(mcbsp->dev, "DRR2:  0x%04x\n",
			OMAP_MCBSP_READ(mcbsp->io_base, DRR2));
	dev_dbg(mcbsp->dev, "DRR1:  0x%04x\n",
			OMAP_MCBSP_READ(mcbsp->io_base, DRR1));
	dev_dbg(mcbsp->dev, "DXR2:  0x%04x\n",
			OMAP_MCBSP_READ(mcbsp->io_base, DXR2));
	dev_dbg(mcbsp->dev, "DXR1:  0x%04x\n",
			OMAP_MCBSP_READ(mcbsp->io_base, DXR1));
	dev_dbg(mcbsp->dev, "SPCR2: 0x%04x\n",
			OMAP_MCBSP_READ(mcbsp->io_base, SPCR2));
	dev_dbg(mcbsp->dev, "SPCR1: 0x%04x\n",
			OMAP_MCBSP_READ(mcbsp->io_base, SPCR1));
	dev_dbg(mcbsp->dev, "RCR2:  0x%04x\n",
			OMAP_MCBSP_READ(mcbsp->io_base, RCR2));
	dev_dbg(mcbsp->dev, "RCR1:  0x%04x\n",
			OMAP_MCBSP_READ(mcbsp->io_base, RCR1));
	dev_dbg(mcbsp->dev, "XCR2:  0x%04x\n",
			OMAP_MCBSP_READ(mcbsp->io_base, XCR2));
	dev_dbg(mcbsp->dev, "XCR1:  0x%04x\n",
			OMAP_MCBSP_READ(mcbsp->io_base, XCR1));
	dev_dbg(mcbsp->dev, "SRGR2: 0x%04x\n",
			OMAP_MCBSP_READ(mcbsp->io_base, SRGR2));
	dev_dbg(mcbsp->dev, "SRGR1: 0x%04x\n",
			OMAP_MCBSP_READ(mcbsp->io_base, SRGR1));
	dev_dbg(mcbsp->dev, "PCR0:  0x%04x\n",
			OMAP_MCBSP_READ(mcbsp->io_base, PCR0));
	dev_dbg(mcbsp->dev, "***********************\n");
}

static irqreturn_t omap_mcbsp_tx_irq_handler(int irq, void *dev_id)
{
	struct omap_mcbsp *mcbsp_tx = dev_id;

	dev_dbg(mcbsp_tx->dev, "TX IRQ callback : 0x%x\n",
		OMAP_MCBSP_READ(mcbsp_tx->io_base, SPCR2));

	complete(&mcbsp_tx->tx_irq_completion);

	return IRQ_HANDLED;
}

static irqreturn_t omap_mcbsp_rx_irq_handler(int irq, void *dev_id)
{
	struct omap_mcbsp *mcbsp_rx = dev_id;

	dev_dbg(mcbsp_rx->dev, "RX IRQ callback : 0x%x\n",
		OMAP_MCBSP_READ(mcbsp_rx->io_base, SPCR2));

	complete(&mcbsp_rx->rx_irq_completion);

	return IRQ_HANDLED;
}

static void omap_mcbsp_tx_dma_callback(int lch, u16 ch_status, void *data)
{
	struct omap_mcbsp *mcbsp_dma_tx = data;

	dev_dbg(mcbsp_dma_tx->dev, "TX DMA callback : 0x%x\n",
		OMAP_MCBSP_READ(mcbsp_dma_tx->io_base, SPCR2));

	/* We can free the channels */
	omap_free_dma(mcbsp_dma_tx->dma_tx_lch);
	mcbsp_dma_tx->dma_tx_lch = -1;

	complete(&mcbsp_dma_tx->tx_dma_completion);
}

static void omap_mcbsp_rx_dma_callback(int lch, u16 ch_status, void *data)
{
	struct omap_mcbsp *mcbsp_dma_rx = data;

	dev_dbg(mcbsp_dma_rx->dev, "RX DMA callback : 0x%x\n",
		OMAP_MCBSP_READ(mcbsp_dma_rx->io_base, SPCR2));

	/* We can free the channels */
	omap_free_dma(mcbsp_dma_rx->dma_rx_lch);
	mcbsp_dma_rx->dma_rx_lch = -1;

	complete(&mcbsp_dma_rx->rx_dma_completion);
}

/*
 * omap_mcbsp_config simply write a config to the
 * appropriate McBSP.
 * You either call this function or set the McBSP registers
 * by yourself before calling omap_mcbsp_start().
 */
void omap_mcbsp_config(unsigned int id, const struct omap_mcbsp_reg_cfg *config)
{
	struct omap_mcbsp *mcbsp;
	void __iomem *io_base;

	if (!omap_mcbsp_check_valid_id(id)) {
		printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1);
		return;
	}
	mcbsp = id_to_mcbsp_ptr(id);

	io_base = mcbsp->io_base;
	dev_dbg(mcbsp->dev, "Configuring McBSP%d  phys_base: 0x%08lx\n",
			mcbsp->id, mcbsp->phys_base);

	/* We write the given config */
	OMAP_MCBSP_WRITE(io_base, SPCR2, config->spcr2);
	OMAP_MCBSP_WRITE(io_base, SPCR1, config->spcr1);
	OMAP_MCBSP_WRITE(io_base, RCR2, config->rcr2);
	OMAP_MCBSP_WRITE(io_base, RCR1, config->rcr1);
	OMAP_MCBSP_WRITE(io_base, XCR2, config->xcr2);
	OMAP_MCBSP_WRITE(io_base, XCR1, config->xcr1);
	OMAP_MCBSP_WRITE(io_base, SRGR2, config->srgr2);
	OMAP_MCBSP_WRITE(io_base, SRGR1, config->srgr1);
	OMAP_MCBSP_WRITE(io_base, MCR2, config->mcr2);
	OMAP_MCBSP_WRITE(io_base, MCR1, config->mcr1);
	OMAP_MCBSP_WRITE(io_base, PCR0, config->pcr0);
}
EXPORT_SYMBOL(omap_mcbsp_config);

/*
 * We can choose between IRQ based or polled IO.
 * This needs to be called before omap_mcbsp_request().
 */
int omap_mcbsp_set_io_type(unsigned int id, omap_mcbsp_io_type_t io_type)
{
	struct omap_mcbsp *mcbsp;

	if (!omap_mcbsp_check_valid_id(id)) {
		printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1);
		return -ENODEV;
	}
	mcbsp = id_to_mcbsp_ptr(id);

	spin_lock(&mcbsp->lock);

	if (!mcbsp->free) {
		dev_err(mcbsp->dev, "McBSP%d is currently in use\n",
			mcbsp->id);
		spin_unlock(&mcbsp->lock);
		return -EINVAL;
	}

	mcbsp->io_type = io_type;

	spin_unlock(&mcbsp->lock);

	return 0;
}
EXPORT_SYMBOL(omap_mcbsp_set_io_type);

int omap_mcbsp_request(unsigned int id)
{
	struct omap_mcbsp *mcbsp;
	int err;

	if (!omap_mcbsp_check_valid_id(id)) {
		printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1);
		return -ENODEV;
	}
	mcbsp = id_to_mcbsp_ptr(id);

	if (mcbsp->pdata && mcbsp->pdata->ops && mcbsp->pdata->ops->request)
		mcbsp->pdata->ops->request(id);

	clk_enable(mcbsp->clk);

	spin_lock(&mcbsp->lock);
	if (!mcbsp->free) {
		dev_err(mcbsp->dev, "McBSP%d is currently in use\n",
			mcbsp->id);
		spin_unlock(&mcbsp->lock);
		return -1;
	}

	mcbsp->free = 0;
	spin_unlock(&mcbsp->lock);

	/*
	 * Make sure that transmitter, receiver and sample-rate generator are
	 * not running before activating IRQs.
	 */
	OMAP_MCBSP_WRITE(mcbsp->io_base, SPCR1, 0);
	OMAP_MCBSP_WRITE(mcbsp->io_base, SPCR2, 0);

	if (mcbsp->io_type == OMAP_MCBSP_IRQ_IO) {
		/* We need to get IRQs here */
		init_completion(&mcbsp->tx_irq_completion);
		err = request_irq(mcbsp->tx_irq, omap_mcbsp_tx_irq_handler,
					0, "McBSP", (void *)mcbsp);
		if (err != 0) {
			dev_err(mcbsp->dev, "Unable to request TX IRQ %d "
					"for McBSP%d\n", mcbsp->tx_irq,
					mcbsp->id);
			return err;
		}

		init_completion(&mcbsp->rx_irq_completion);
		err = request_irq(mcbsp->rx_irq, omap_mcbsp_rx_irq_handler,
					0, "McBSP", (void *)mcbsp);
		if (err != 0) {
			dev_err(mcbsp->dev, "Unable to request RX IRQ %d "
					"for McBSP%d\n", mcbsp->rx_irq,
					mcbsp->id);
			free_irq(mcbsp->tx_irq, (void *)mcbsp);
			return err;
		}
	}

	return 0;
}
EXPORT_SYMBOL(omap_mcbsp_request);

void omap_mcbsp_free(unsigned int id)
{
	struct omap_mcbsp *mcbsp;

	if (!omap_mcbsp_check_valid_id(id)) {
		printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1);
		return;
	}
	mcbsp = id_to_mcbsp_ptr(id);

	if (mcbsp->pdata && mcbsp->pdata->ops && mcbsp->pdata->ops->free)
		mcbsp->pdata->ops->free(id);

	clk_disable(mcbsp->clk);

	spin_lock(&mcbsp->lock);
	if (mcbsp->free) {
		dev_err(mcbsp->dev, "McBSP%d was not reserved\n",
			mcbsp->id);
		spin_unlock(&mcbsp->lock);
		return;
	}

	mcbsp->free = 1;
	spin_unlock(&mcbsp->lock);

	if (mcbsp->io_type == OMAP_MCBSP_IRQ_IO) {
		/* Free IRQs */
		free_irq(mcbsp->rx_irq, (void *)mcbsp);
		free_irq(mcbsp->tx_irq, (void *)mcbsp);
	}
}
EXPORT_SYMBOL(omap_mcbsp_free);

/*
 * Here we start the McBSP, by enabling the sample
 * generator, both transmitter and receivers,
 * and the frame sync.
 */
void omap_mcbsp_start(unsigned int id)
{
	struct omap_mcbsp *mcbsp;
	void __iomem *io_base;
	u16 w;

	if (!omap_mcbsp_check_valid_id(id)) {
		printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1);
		return;
	}
	mcbsp = id_to_mcbsp_ptr(id);
	io_base = mcbsp->io_base;

	mcbsp->rx_word_length = (OMAP_MCBSP_READ(io_base, RCR1) >> 5) & 0x7;
	mcbsp->tx_word_length = (OMAP_MCBSP_READ(io_base, XCR1) >> 5) & 0x7;

	/* Start the sample generator */
	w = OMAP_MCBSP_READ(io_base, SPCR2);
	OMAP_MCBSP_WRITE(io_base, SPCR2, w | (1 << 6));

	/* Enable transmitter and receiver */
	w = OMAP_MCBSP_READ(io_base, SPCR2);
	OMAP_MCBSP_WRITE(io_base, SPCR2, w | 1);

	w = OMAP_MCBSP_READ(io_base, SPCR1);
	OMAP_MCBSP_WRITE(io_base, SPCR1, w | 1);

	udelay(100);

	/* Start frame sync */
	w = OMAP_MCBSP_READ(io_base, SPCR2);
	OMAP_MCBSP_WRITE(io_base, SPCR2, w | (1 << 7));

	/* Dump McBSP Regs */
	omap_mcbsp_dump_reg(id);
}
EXPORT_SYMBOL(omap_mcbsp_start);

void omap_mcbsp_stop(unsigned int id)
{
	struct omap_mcbsp *mcbsp;
	void __iomem *io_base;
	u16 w;

	if (!omap_mcbsp_check_valid_id(id)) {
		printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1);
		return;
	}

	mcbsp = id_to_mcbsp_ptr(id);
	io_base = mcbsp->io_base;

	/* Reset transmitter */
	w = OMAP_MCBSP_READ(io_base, SPCR2);
	OMAP_MCBSP_WRITE(io_base, SPCR2, w & ~(1));

	/* Reset receiver */
	w = OMAP_MCBSP_READ(io_base, SPCR1);
	OMAP_MCBSP_WRITE(io_base, SPCR1, w & ~(1));

	/* Reset the sample rate generator */
	w = OMAP_MCBSP_READ(io_base, SPCR2);
	OMAP_MCBSP_WRITE(io_base, SPCR2, w & ~(1 << 6));
}
EXPORT_SYMBOL(omap_mcbsp_stop);

/* polled mcbsp i/o operations */
int omap_mcbsp_pollwrite(unsigned int id, u16 buf)
{
	struct omap_mcbsp *mcbsp;
	void __iomem *base;

	if (!omap_mcbsp_check_valid_id(id)) {
		printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1);
		return -ENODEV;
	}

	mcbsp = id_to_mcbsp_ptr(id);
	base = mcbsp->io_base;

	writew(buf, base + OMAP_MCBSP_REG_DXR1);
	/* if frame sync error - clear the error */
	if (readw(base + OMAP_MCBSP_REG_SPCR2) & XSYNC_ERR) {
		/* clear error */
		writew(readw(base + OMAP_MCBSP_REG_SPCR2) & (~XSYNC_ERR),
		       base + OMAP_MCBSP_REG_SPCR2);
		/* resend */
		return -1;
	} else {
		/* wait for transmit confirmation */
		int attemps = 0;
		while (!(readw(base + OMAP_MCBSP_REG_SPCR2) & XRDY)) {
			if (attemps++ > 1000) {
				writew(readw(base + OMAP_MCBSP_REG_SPCR2) &
				       (~XRST),
				       base + OMAP_MCBSP_REG_SPCR2);
				udelay(10);
				writew(readw(base + OMAP_MCBSP_REG_SPCR2) |
				       (XRST),
				       base + OMAP_MCBSP_REG_SPCR2);
				udelay(10);
				dev_err(mcbsp->dev, "Could not write to"
					" McBSP%d Register\n", mcbsp->id);
				return -2;
			}
		}
	}

	return 0;
}
EXPORT_SYMBOL(omap_mcbsp_pollwrite);

int omap_mcbsp_pollread(unsigned int id, u16 *buf)
{
	struct omap_mcbsp *mcbsp;
	void __iomem *base;

	if (!omap_mcbsp_check_valid_id(id)) {
		printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1);
		return -ENODEV;
	}
	mcbsp = id_to_mcbsp_ptr(id);

	base = mcbsp->io_base;
	/* if frame sync error - clear the error */
	if (readw(base + OMAP_MCBSP_REG_SPCR1) & RSYNC_ERR) {
		/* clear error */
		writew(readw(base + OMAP_MCBSP_REG_SPCR1) & (~RSYNC_ERR),


context:
space:
mode: