diff mbox series

[RESEND,v5,1/2] soundwire: qcom: Add flag for software clock gating check

Message ID 1656659827-27450-2-git-send-email-quic_srivasam@quicinc.com
State Accepted
Commit 1fd0d85affe4d64e54b81d04bf9577e57172a341
Headers show
Series Add software clock gating requirement check | expand

Commit Message

Srinivasa Rao Mandadapu July 1, 2022, 7:17 a.m. UTC 
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>
---
 drivers/soundwire/qcom.c | 10 ++++++++++
 1 file changed, 10 insertions(+)
diff mbox series

Patch

diff --git a/drivers/soundwire/qcom.c b/drivers/soundwire/qcom.c
index 22b7063..5baceda 100644
--- a/drivers/soundwire/qcom.c
+++ b/drivers/soundwire/qcom.c
@@ -179,6 +179,7 @@  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 = {
@@ -1307,6 +1308,15 @@  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;