linux/sound/soc/tegra/tegra_asoc_utils.h
Stephen Warren 075413966a ASoC: Tegra: Don't return mclk_changed from utils_set_rate
Only the clock programming code needs to know whether the clocks changed,
and that is encapsulated within tegra_asoc_utils_set_rate(). The machine
driver's call to snd_soc_dai_set_sysclk(codec_dai, ...) is safe
irrespective of whether the clocks changed.

(Applying Mark's TrimSlice review comments to the existing driver)

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-04-20 13:49:55 +01:00

46 lines
1.3 KiB
C

/*
* tegra_asoc_utils.h - Definitions for Tegra DAS driver
*
* Author: Stephen Warren <swarren@nvidia.com>
* Copyright (C) 2010 - NVIDIA, Inc.
*
* 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.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
*/
#ifndef __TEGRA_ASOC_UTILS_H__
#define __TEGRA_ASOC_UTILS_H_
struct clk;
struct device;
struct tegra_asoc_utils_data {
struct device *dev;
struct clk *clk_pll_a;
struct clk *clk_pll_a_out0;
struct clk *clk_cdev1;
int set_baseclock;
int set_mclk;
};
int tegra_asoc_utils_set_rate(struct tegra_asoc_utils_data *data, int srate,
int mclk);
int tegra_asoc_utils_init(struct tegra_asoc_utils_data *data,
struct device *dev);
void tegra_asoc_utils_fini(struct tegra_asoc_utils_data *data);
#endif