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soc: pinctrl-lpi: Add support for audio HM voting for bengal

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On bengal target, audio core voting is not applicable.
Add support for audio HM voting in pinctrl-lpi driver.

Change-Id: I8661c981896c14899ca4d85f77507b417700b987
Signed-off-by: Laxminath Kasam <lkasam@codeaurora.org>
This commit is contained in:
Laxminath Kasam 2019-08-27 14:38:20 +05:30
commit 4ccd4b4e74
1 changed files with 27 additions and 4 deletions
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31
soc/pinctrl-lpi.c
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@ -110,6 +110,7 @@ struct lpi_gpio_state {
struct gpio_chip chip;
char __iomem *base;
struct clk *lpass_core_hw_vote;
struct clk *lpass_audio_hw_vote;
struct mutex slew_access_lock;
bool core_hw_vote_status;
struct mutex core_hw_vote_lock;
@ -616,6 +617,7 @@ static int lpi_pinctrl_probe(struct platform_device *pdev)
char __iomem *slew_base;
u32 reg, slew_reg;
struct clk *lpass_core_hw_vote = NULL;
struct clk *lpass_audio_hw_vote = NULL;
ret = of_property_read_u32(dev->of_node, "reg", &reg);
if (ret < 0) {
@ -771,6 +773,17 @@ static int lpi_pinctrl_probe(struct platform_device *pdev)
}
state->lpass_core_hw_vote = lpass_core_hw_vote;
/* Register LPASS audio hw vote */
lpass_audio_hw_vote = devm_clk_get(&pdev->dev, "lpass_audio_hw_vote");
if (IS_ERR(lpass_audio_hw_vote)) {
ret = PTR_ERR(lpass_audio_hw_vote);
dev_dbg(&pdev->dev, "%s: clk get %s failed %d\n",
__func__, "lpass_audio_hw_vote", ret);
lpass_audio_hw_vote = NULL;
ret = 0;
}
state->lpass_audio_hw_vote = lpass_audio_hw_vote;
state->core_hw_vote_status = false;
pm_runtime_set_autosuspend_delay(&pdev->dev, LPI_AUTO_SUSPEND_DELAY);
pm_runtime_use_autosuspend(&pdev->dev);
@ -817,14 +830,19 @@ int lpi_pinctrl_runtime_resume(struct device *dev)
{
struct lpi_gpio_state *state = dev_get_drvdata(dev);
int ret = 0;
struct clk *hw_vote = state->lpass_core_hw_vote;
if (state->lpass_core_hw_vote == NULL) {
dev_dbg(dev, "%s: Invalid core hw node\n", __func__);
return 0;
if (state->lpass_audio_hw_vote == NULL) {
dev_dbg(dev, "%s: Invalid audio hw node\n", __func__);
return 0;
}
hw_vote = state->lpass_audio_hw_vote;
}
mutex_lock(&state->core_hw_vote_lock);
ret = clk_prepare_enable(state->lpass_core_hw_vote);
ret = clk_prepare_enable(hw_vote);
if (ret < 0) {
pm_runtime_set_autosuspend_delay(dev,
LPI_AUTO_SUSPEND_DELAY_ERROR);
@ -845,15 +863,20 @@ exit:
int lpi_pinctrl_runtime_suspend(struct device *dev)
{
struct lpi_gpio_state *state = dev_get_drvdata(dev);
struct clk *hw_vote = state->lpass_core_hw_vote;
if (state->lpass_core_hw_vote == NULL) {
dev_dbg(dev, "%s: Invalid core hw node\n", __func__);
return 0;
if (state->lpass_audio_hw_vote == NULL) {
dev_dbg(dev, "%s: Invalid audio hw node\n", __func__);
return 0;
}
hw_vote = state->lpass_audio_hw_vote;
}
mutex_lock(&state->core_hw_vote_lock);
if (state->core_hw_vote_status) {
clk_disable_unprepare(state->lpass_core_hw_vote);
clk_disable_unprepare(hw_vote);
state->core_hw_vote_status = false;
}
mutex_unlock(&state->core_hw_vote_lock);