arch/arm/mach-omap2/mcbsp.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * linux/arch/arm/mach-omap2/mcbsp.c
   4  *
   5  * Copyright (C) 2008 Instituto Nokia de Tecnologia
   6  * Contact: Eduardo Valentin <eduardo.valentin@indt.org.br>
   7  *
   8  * Multichannel mode not supported.
   9  */
  10 #include <linux/module.h>
  11 #include <linux/init.h>
  12 #include <linux/clk.h>
  13 #include <linux/err.h>
  14 #include <linux/io.h>
  15 #include <linux/of.h>
  16 #include <linux/platform_device.h>
  17 #include <linux/slab.h>
  18 #include <linux/platform_data/asoc-ti-mcbsp.h>
  19 #include <linux/pm_runtime.h>
  20
  21 #include <linux/omap-dma.h>
  22
  23 #include "soc.h"
  24 #include "omap_device.h"
  25 #include "clock.h"
  26
  27 /*
  28  * FIXME: Find a mechanism to enable/disable runtime the McBSP ICLK autoidle.
  29  * Sidetone needs non-gated ICLK and sidetone autoidle is broken.
  30  */
  31 #include "cm3xxx.h"
  32 #include "cm-regbits-34xx.h"
  33
  34 static int omap3_mcbsp_force_ick_on(struct clk *clk, bool force_on)
  35 {
  36         if (!clk)
  37                 return 0;
  38
  39         if (force_on)
  40                 return omap2_clk_deny_idle(clk);
  41         else
  42                 return omap2_clk_allow_idle(clk);
  43 }
  44
  45 void __init omap3_mcbsp_init_pdata_callback(
  46                                         struct omap_mcbsp_platform_data *pdata)
  47 {
  48         if (!pdata)
  49                 return;
  50
  51         pdata->force_ick_on = omap3_mcbsp_force_ick_on;
  52 }