samsung-sm8650/android_kernel_samsung_sm8650-modules
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asoc: ext-clk: dynamically configure clk parent name

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Add support to dynamically configure clk parent name
from device tree.

Change-Id: I9ae0c34c248503625523a2d1e33d800b2138ed39
Signed-off-by: Surendar Karka <skarka@codeaurora.org>
This commit is contained in:
Surendar Karka
2018-07-09 20:30:03 +05:30
parent 2f39a329bf
commit 0a915f8c68
1 changed files with 35 additions and 4 deletions
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39
asoc/codecs/audio-ext-clk-up.c
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@@ -47,6 +47,7 @@ struct audio_ext_clk_priv {
int clk_src; int clk_src;
struct afe_clk_set clk_cfg; struct afe_clk_set clk_cfg;
struct audio_ext_clk audio_clk; struct audio_ext_clk audio_clk;
const char *clk_name;
}; };
static inline struct audio_ext_clk_priv *to_audio_clk(struct clk_hw *hw) static inline struct audio_ext_clk_priv *to_audio_clk(struct clk_hw *hw)
@@ -113,9 +114,34 @@ static void audio_ext_clk_unprepare(struct clk_hw *hw)
iowrite32(0, pnctrl_info->base); iowrite32(0, pnctrl_info->base);
} }
static u8 audio_ext_clk_get_parent(struct clk_hw *hw)
{
struct audio_ext_clk_priv *clk_priv = to_audio_clk(hw);
int num_parents = clk_hw_get_num_parents(hw);
const char * const *parent_names = hw->init->parent_names;
u8 i = 0, ret = hw->init->num_parents + 1;
if ((clk_priv->clk_src == AUDIO_EXT_CLK_PMI) && clk_priv->clk_name) {
for (i = 0; i < num_parents; i++) {
if (!strcmp(parent_names[i], clk_priv->clk_name))
ret = i;
}
pr_debug("%s: parent index = %u\n", __func__, ret);
return ret;
} else
return 0;
}
static const struct clk_ops audio_ext_clk_ops = { static const struct clk_ops audio_ext_clk_ops = {
.prepare = audio_ext_clk_prepare, .prepare = audio_ext_clk_prepare,
.unprepare = audio_ext_clk_unprepare, .unprepare = audio_ext_clk_unprepare,
.get_parent = audio_ext_clk_get_parent,
};
static const char * const audio_ext_pmi_div_clk[] = {
"qpnp_clkdiv_1",
"pms405_div_clk1",
"pm6150_div_clk1",
}; };
static struct audio_ext_clk audio_clk_array[] = { static struct audio_ext_clk audio_clk_array[] = {
@@ -126,9 +152,9 @@ static struct audio_ext_clk audio_clk_array[] = {
.div = 1, .div = 1,
.hw.init = &(struct clk_init_data){ .hw.init = &(struct clk_init_data){
.name = "audio_ext_pmi_clk", .name = "audio_ext_pmi_clk",
.parent_names = (const char *[]) .parent_names = audio_ext_pmi_div_clk,
{ "qpnp_clkdiv_1" }, .num_parents =
.num_parents = 1, ARRAY_SIZE(audio_ext_pmi_div_clk),
.ops = &audio_ext_clk_ops, .ops = &audio_ext_clk_ops,
}, },
}, },
@@ -300,7 +326,7 @@ static int audio_ref_clk_probe(struct platform_device *pdev)
__func__, clk_src); __func__, clk_src);
return -EINVAL; return -EINVAL;
} }
clk_priv->clk_name = NULL;
clk_priv->clk_src = clk_src; clk_priv->clk_src = clk_src;
memcpy(&clk_priv->audio_clk, &audio_clk_array[clk_src], memcpy(&clk_priv->audio_clk, &audio_clk_array[clk_src],
sizeof(struct audio_ext_clk)); sizeof(struct audio_ext_clk));
@@ -329,6 +355,11 @@ static int audio_ref_clk_probe(struct platform_device *pdev)
clk_priv->clk_cfg.clk_id, clk_priv->clk_src); clk_priv->clk_cfg.clk_id, clk_priv->clk_src);
platform_set_drvdata(pdev, clk_priv); platform_set_drvdata(pdev, clk_priv);
ret = of_property_read_string(pdev->dev.of_node, "pmic-clock-names",
&clk_priv->clk_name);
if (ret)
dev_dbg(&pdev->dev, "%s: could not find pmic clock names\n",
__func__);
/* /*
* property qcom,use-pinctrl to be defined in DTSI to val 1 * property qcom,use-pinctrl to be defined in DTSI to val 1
* for clock nodes using pinctrl * for clock nodes using pinctrl