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 37 static 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 48 void __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