LXR linux/arch/arm/mach-omap2/mcbsp.c

   1/*
   2 * linux/arch/arm/mach-omap2/mcbsp.c
   3 *
   4 * Copyright (C) 2008 Instituto Nokia de Tecnologia
   5 * Contact: Eduardo Valentin <eduardo.valentin@indt.org.br>
   6 *
   7 * This program is free software; you can redistribute it and/or modify
   8 * it under the terms of the GNU General Public License version 2 as
   9 * published by the Free Software Foundation.
  10 *
  11 * Multichannel mode not supported.
  12 */
  13#include <linux/module.h>
  14#include <linux/init.h>
  15#include <linux/clk.h>
  16#include <linux/err.h>
  17#include <linux/io.h>
  18#include <linux/of.h>
  19#include <linux/platform_device.h>
  20#include <linux/slab.h>
  21#include <linux/platform_data/asoc-ti-mcbsp.h>
  22#include <linux/pm_runtime.h>
  23
  24#include <linux/omap-dma.h>
  25
  26#include "soc.h"
  27#include "omap_device.h"
  28#include "clock.h"
  29
  30/*
  31 * FIXME: Find a mechanism to enable/disable runtime the McBSP ICLK autoidle.
  32 * Sidetone needs non-gated ICLK and sidetone autoidle is broken.
  33 */
  34#include "cm3xxx.h"
  35#include "cm-regbits-34xx.h"
  36
  37static int omap3_mcbsp_force_ick_on(struct clk *clk, bool force_on)
  38{
  39        if (!clk)
  40                return 0;
  41
  42        if (force_on)
  43                return omap2_clk_deny_idle(clk);
  44        else
  45                return omap2_clk_allow_idle(clk);
  46}
  47
  48void __init omap3_mcbsp_init_pdata_callback(
  49                                        struct omap_mcbsp_platform_data *pdata)
  50{
  51        if (!pdata)
  52                return;
  53
  54        pdata->force_ick_on = omap3_mcbsp_force_ick_on;
  55}
  56