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soundwire: qcom: Add flag for software clock gating check 

Validate software clock gating required or not and do software
clock gating on hclk if soundwire is operational and keep it
running by adding flag in private data structure.
This is to avoid conflict between older architectures,
where software clock gating is not required and on latest
architectures, where software clock gating is mandatory.

Signed-off-by: Srinivasa Rao Mandadapu <quic_srivasam@quicinc.com>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/1656659827-27450-2-git-send-email-quic_srivasam@quicinc.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Srinivasa Rao Mandadapu 2022-07-01 12:47:06 +05:30 committed by Vinod Koul
parent 33ba017888
commit 1fd0d85aff
1 changed files with 10 additions and 0 deletions
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10
drivers/soundwire/qcom.c
View File

@ -181,6 +181,7 @@ struct qcom_swrm_ctrl {
struct qcom_swrm_data {
u32 default_cols;
u32 default_rows;
bool sw_clk_gate_required;
};
static const struct qcom_swrm_data swrm_v1_3_data = {
@ -1311,6 +1312,15 @@ static int qcom_swrm_probe(struct platform_device *pdev)
return PTR_ERR(ctrl->mmio);
}
if (data->sw_clk_gate_required) {
ctrl->audio_cgcr = devm_reset_control_get_exclusive(dev, "swr_audio_cgcr");
if (IS_ERR_OR_NULL(ctrl->audio_cgcr)) {
dev_err(dev, "Failed to get cgcr reset ctrl required for SW gating\n");
ret = PTR_ERR(ctrl->audio_cgcr);
goto err_init;
}
}
ctrl->irq = of_irq_get(dev->of_node, 0);
if (ctrl->irq < 0) {
ret = ctrl->irq;