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asoc: tegra-alt:t210: add dap-io regulator support

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This change is for adding dap-io regulator support for i2s
devices through device tree.

Change-Id: Ie34a61459c3ff282835a9ae3b1d49e13194da33a
Signed-off-by: Dara Ramesh <dramesh@nvidia.com>
Reviewed-on: http://git-master/r/448787
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Sumit Bhattacharya <sumitb@nvidia.com>
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>
This commit is contained in:
Dara Ramesh
2014-07-30 15:26:19 +05:30
committed by Sameer Pujar
parent 4f1f08d562
commit 62ef54a3a3
1 changed files with 37 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

42
sound/soc/tegra-alt/tegra210_i2s_alt.c
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@@ -29,6 +29,7 @@
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <linux/pinctrl/consumer.h>
#include <linux/regulator/consumer.h>
#include <linux/of_device.h>
#include <linux/debugfs.h>
@@ -90,6 +91,13 @@ static int tegra210_i2s_runtime_suspend(struct device *dev)
dev_err(dev, "setting dap pinctrl idle state failed\n");
}
if (i2s->num_supplies > 0) {
ret = regulator_bulk_disable(i2s->num_supplies,
i2s->supplies);
if (ret < 0)
dev_err(dev, "failed to disable i2s io regulator\n");
}
regcache_cache_only(i2s->regmap, true);
clk_disable_unprepare(i2s->clk_i2s);
@@ -108,6 +116,13 @@ static int tegra210_i2s_runtime_resume(struct device *dev)
dev_err(dev, "setting dap pinctrl default state failed\n");
}
if (i2s->num_supplies > 0) {
ret = regulator_bulk_enable(i2s->num_supplies,
i2s->supplies);
if (ret < 0)
dev_err(dev, "failed to enable i2s io regulator\n");
}
ret = clk_prepare_enable(i2s->clk_i2s);
if (ret) {
dev_err(dev, "clk_enable failed: %d\n", ret);
@@ -528,12 +543,15 @@ static const struct of_device_id tegra210_i2s_of_match[] = {
static int tegra210_i2s_platform_probe(struct platform_device *pdev)
{
const struct of_device_id *match;
struct device_node *np = pdev->dev.of_node;
struct tegra210_i2s_soc_data *soc_data;
struct tegra210_i2s *i2s;
struct resource *mem, *memregion;
struct property *prop;
void __iomem *regs;
int ret = 0;
const struct of_device_id *match;
struct tegra210_i2s_soc_data *soc_data;
int ret = 0, count = 0, num_supplies;
const char *supply;
match = of_match_device(tegra210_i2s_of_match, &pdev->dev);
if (!match) {
@@ -609,8 +627,7 @@ static int tegra210_i2s_platform_probe(struct platform_device *pdev)
}
regcache_cache_only(i2s->regmap, true);
if (of_property_read_u32(pdev->dev.of_node,
"nvidia,ahub-i2s-id",
if (of_property_read_u32(np, "nvidia,ahub-i2s-id",
&pdev->dev.id) < 0) {
dev_err(&pdev->dev,
"Missing property nvidia,ahub-i2s-id\n");
@@ -618,6 +635,21 @@ static int tegra210_i2s_platform_probe(struct platform_device *pdev)
goto err_pll_a_out0_clk_put;
}
num_supplies = of_property_count_strings(np, "regulator-supplies");
if (num_supplies > 0) {
i2s->num_supplies = num_supplies;
i2s->supplies = devm_kzalloc(&pdev->dev, num_supplies *
sizeof(*i2s->supplies), GFP_KERNEL);
if (!i2s->supplies) {
ret = -ENOMEM;
goto err_pll_a_out0_clk_put;
}
of_property_for_each_string(np, "regulator-supplies",
prop, supply)
i2s->supplies[count++].supply = supply;
}
i2s->pinctrl = devm_pinctrl_get(&pdev->dev);
if (IS_ERR(i2s->pinctrl)) {
dev_warn(&pdev->dev, "Missing pinctrl device\n");