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ASoC: tegra: add Tegra114 support to tegra_asoc_utils.c 

Tegra114 requires different PLL rates. Modify the code to know about
this.

On Tegra114 only for now, use regular clk_get() rather than clk_get_sys()
to retrieve clocks. This assumes that the clocks will be represented in
device tree. We can assure that from the start of any Tegra114 audio
support. For older chips, I'll add the required clocks properties to the
device trees this kernel cycle, and switch this code to only support the
"new_clocks" path next cycle.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Stephen Warren 2013-03-21 13:56:42 -06:00 committed by Mark Brown
parent 95d3607569
commit a7fc5d256b
2 changed files with 25 additions and 6 deletions
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30
sound/soc/tegra/tegra_asoc_utils.c
View File

@ -43,8 +43,10 @@ int tegra_asoc_utils_set_rate(struct tegra_asoc_utils_data *data, int srate,
case 88200:
if (data->soc == TEGRA_ASOC_UTILS_SOC_TEGRA20)
new_baseclock = 56448000;
else
else if (data->soc == TEGRA_ASOC_UTILS_SOC_TEGRA30)
new_baseclock = 564480000;
else
new_baseclock = 282240000;
break;
case 8000:
case 16000:
@ -54,8 +56,10 @@ int tegra_asoc_utils_set_rate(struct tegra_asoc_utils_data *data, int srate,
case 96000:
if (data->soc == TEGRA_ASOC_UTILS_SOC_TEGRA20)
new_baseclock = 73728000;
else
else if (data->soc == TEGRA_ASOC_UTILS_SOC_TEGRA30)
new_baseclock = 552960000;
else
new_baseclock = 368640000;
break;
default:
return -EINVAL;
@ -169,6 +173,7 @@ int tegra_asoc_utils_init(struct tegra_asoc_utils_data *data,
struct device *dev)
{
int ret;
bool new_clocks = false;
data->dev = dev;
@ -176,24 +181,37 @@ int tegra_asoc_utils_init(struct tegra_asoc_utils_data *data,
data->soc = TEGRA_ASOC_UTILS_SOC_TEGRA20;
else if (of_machine_is_compatible("nvidia,tegra30"))
data->soc = TEGRA_ASOC_UTILS_SOC_TEGRA30;
else
else if (of_machine_is_compatible("nvidia,tegra114")) {
data->soc = TEGRA_ASOC_UTILS_SOC_TEGRA114;
new_clocks = true;
} else {
dev_err(data->dev, "SoC unknown to Tegra ASoC utils\n");
return -EINVAL;
}
data->clk_pll_a = clk_get_sys(NULL, "pll_a");
if (new_clocks)
data->clk_pll_a = clk_get(dev, "pll_a");
else
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");
ret = PTR_ERR(data->clk_pll_a);
goto err;
}
data->clk_pll_a_out0 = clk_get_sys(NULL, "pll_a_out0");
if (new_clocks)
data->clk_pll_a_out0 = clk_get(dev, "pll_a_out0");
else
data->clk_pll_a_out0 = clk_get_sys(NULL, "pll_a_out0");
if (IS_ERR(data->clk_pll_a_out0)) {
dev_err(data->dev, "Can't retrieve clk pll_a_out0\n");
ret = PTR_ERR(data->clk_pll_a_out0);
goto err_put_pll_a;
}
if (data->soc == TEGRA_ASOC_UTILS_SOC_TEGRA20)
if (new_clocks)
data->clk_cdev1 = clk_get(dev, "mclk");
else 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);

1
sound/soc/tegra/tegra_asoc_utils.h
View File

@ -29,6 +29,7 @@ struct device;
enum tegra_asoc_utils_soc {
TEGRA_ASOC_UTILS_SOC_TEGRA20,
TEGRA_ASOC_UTILS_SOC_TEGRA30,
TEGRA_ASOC_UTILS_SOC_TEGRA114,
};
struct tegra_asoc_utils_data {