arch/arm/mach-omap2/mcbsp.c

Source file repositories/reference/linux-study-clean/arch/arm/mach-omap2/mcbsp.c

File Facts

System
Linux kernel
Corpus path
arch/arm/mach-omap2/mcbsp.c
Extension
.c
Size
1164 bytes
Lines
53
Domain
Architecture Layer
Bucket
arch/arm
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-only
/*
 * linux/arch/arm/mach-omap2/mcbsp.c
 *
 * Copyright (C) 2008 Instituto Nokia de Tecnologia
 * Contact: Eduardo Valentin <eduardo.valentin@indt.org.br>
 *
 * Multichannel mode not supported.
 */
#include <linux/module.h>
#include <linux/init.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/platform_data/asoc-ti-mcbsp.h>
#include <linux/pm_runtime.h>

#include <linux/omap-dma.h>

#include "soc.h"
#include "omap_device.h"
#include "clock.h"

/*
 * FIXME: Find a mechanism to enable/disable runtime the McBSP ICLK autoidle.
 * Sidetone needs non-gated ICLK and sidetone autoidle is broken.
 */
#include "cm3xxx.h"
#include "cm-regbits-34xx.h"

static int omap3_mcbsp_force_ick_on(struct clk *clk, bool force_on)
{
	if (!clk)
		return 0;

	if (force_on)
		return omap2_clk_deny_idle(clk);
	else
		return omap2_clk_allow_idle(clk);
}

void __init omap3_mcbsp_init_pdata_callback(
					struct omap_mcbsp_platform_data *pdata)
{
	if (!pdata)
		return;

	pdata->force_ick_on = omap3_mcbsp_force_ick_on;
}

Annotation

Implementation Notes