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ASoC: tegra: utils: add support for Tegra30 devices

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Tegra30 has some additional clocks that need to be manipulated, names
some clocks differently, runs PLLs at different base rates, etc. The
utility code needs to handle this.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Stephen Warren 2012-04-06 11:15:55 -06:00 committed by Mark Brown
parent a9005b67b3
commit c2f6702d31
2 changed files with 31 additions and 7 deletions
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29
sound/soc/tegra/tegra_asoc_utils.c
View file

@ -2,7 +2,7 @@
* tegra_asoc_utils.c - Harmony machine ASoC driver
*
* Author: Stephen Warren <swarren@nvidia.com>
* Copyright (C) 2010 - NVIDIA, Inc.
* Copyright (C) 2010,2012 - NVIDIA, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
@ -25,6 +25,7 @@
#include <linux/err.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include "tegra_asoc_utils.h"
@ -40,7 +41,10 @@ int tegra_asoc_utils_set_rate(struct tegra_asoc_utils_data *data, int srate,
case 22050:
case 44100:
case 88200:
new_baseclock = 56448000;
if (data->soc == TEGRA_ASOC_UTILS_SOC_TEGRA20)
new_baseclock = 56448000;
else
new_baseclock = 564480000;
break;
case 8000:
case 16000:
@ -48,7 +52,10 @@ int tegra_asoc_utils_set_rate(struct tegra_asoc_utils_data *data, int srate,
case 48000:
case 64000:
case 96000:
new_baseclock = 73728000;
if (data->soc == TEGRA_ASOC_UTILS_SOC_TEGRA20)
new_baseclock = 73728000;
else
new_baseclock = 552960000;
break;
default:
return -EINVAL;
@ -78,7 +85,7 @@ int tegra_asoc_utils_set_rate(struct tegra_asoc_utils_data *data, int srate,
return err;
}
/* Don't set cdev1 rate; its locked to pll_a_out0 */
/* Don't set cdev1/extern1 rate; it's locked to pll_a_out0 */
err = clk_enable(data->clk_pll_a);
if (err) {
@ -112,6 +119,15 @@ int tegra_asoc_utils_init(struct tegra_asoc_utils_data *data,
data->dev = dev;
if (!of_have_populated_dt())
data->soc = TEGRA_ASOC_UTILS_SOC_TEGRA20;
else if (of_machine_is_compatible("nvidia,tegra20"))
data->soc = TEGRA_ASOC_UTILS_SOC_TEGRA20;
else if (of_machine_is_compatible("nvidia,tegra30"))
data->soc = TEGRA_ASOC_UTILS_SOC_TEGRA30;
else
return -EINVAL;
data->clk_pll_a = clk_get_sys(NULL, "pll_a");
if (IS_ERR(data->clk_pll_a)) {
dev_err(data->dev, "Can't retrieve clk pll_a\n");
@ -126,7 +142,10 @@ int tegra_asoc_utils_init(struct tegra_asoc_utils_data *data,
goto err_put_pll_a;
}
data->clk_cdev1 = clk_get_sys(NULL, "cdev1");
if (data->soc == TEGRA_ASOC_UTILS_SOC_TEGRA20)
data->clk_cdev1 = clk_get_sys(NULL, "cdev1");
else
data->clk_cdev1 = clk_get_sys("extern1", NULL);
if (IS_ERR(data->clk_cdev1)) {
dev_err(data->dev, "Can't retrieve clk cdev1\n");
ret = PTR_ERR(data->clk_cdev1);

9
sound/soc/tegra/tegra_asoc_utils.h
View file

@ -2,7 +2,7 @@
* tegra_asoc_utils.h - Definitions for Tegra DAS driver
*
* Author: Stephen Warren <swarren@nvidia.com>
* Copyright (C) 2010 - NVIDIA, Inc.
* Copyright (C) 2010,2012 - NVIDIA, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
@ -26,8 +26,14 @@
struct clk;
struct device;
enum tegra_asoc_utils_soc {
TEGRA_ASOC_UTILS_SOC_TEGRA20,
TEGRA_ASOC_UTILS_SOC_TEGRA30,
};
struct tegra_asoc_utils_data {
struct device *dev;
enum tegra_asoc_utils_soc soc;
struct clk *clk_pll_a;
struct clk *clk_pll_a_out0;
struct clk *clk_cdev1;
@ -42,4 +48,3 @@ int tegra_asoc_utils_init(struct tegra_asoc_utils_data *data,
void tegra_asoc_utils_fini(struct tegra_asoc_utils_data *data);
#endif