[PATCH v2 2/5] clk: qcom: lpassaudiocc-sc7280: Add support for LPASS resets for QCM6490

[Taniya Das <quic_tdas@quicinc.com>]

On the QCM6490 boards the LPASS firmware controls the complete clock
controller functionalities. But the LPASS resets are required to be
controlled from the high level OS. The Audio SW driver should be able to
assert/deassert the audio resets as required. Thus in clock driver add
support for the resets.

Signed-off-by: Taniya Das <quic_tdas@quicinc.com>
---
 drivers/clk/qcom/lpassaudiocc-sc7280.c | 23 +++++++++++++++++++----
 1 file changed, 19 insertions(+), 4 deletions(-)

diff --git a/drivers/clk/qcom/lpassaudiocc-sc7280.c b/drivers/clk/qcom/lpassaudiocc-sc7280.c
index 45e726477086..b64393089263 100644
--- a/drivers/clk/qcom/lpassaudiocc-sc7280.c
+++ b/drivers/clk/qcom/lpassaudiocc-sc7280.c
@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (c) 2021, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2024, Qualcomm Innovation Center, Inc. All rights reserved.
  */
 
 #include <linux/clk-provider.h>
@@ -713,14 +714,24 @@ static const struct qcom_reset_map lpass_audio_cc_sc7280_resets[] = {
 	[LPASS_AUDIO_SWR_WSA_CGCR] = { 0xb0, 1 },
 };
 
+static const struct regmap_config lpass_audio_cc_sc7280_reset_regmap_config = {
+	.name = "lpassaudio_cc_reset",
+	.reg_bits = 32,
+	.reg_stride = 4,
+	.val_bits = 32,
+	.fast_io = true,
+	.max_register = 0xc8,
+};
+
 static const struct qcom_cc_desc lpass_audio_cc_reset_sc7280_desc = {
-	.config = &lpass_audio_cc_sc7280_regmap_config,
+	.config = &lpass_audio_cc_sc7280_reset_regmap_config,
 	.resets = lpass_audio_cc_sc7280_resets,
 	.num_resets = ARRAY_SIZE(lpass_audio_cc_sc7280_resets),
 };
 
 static const struct of_device_id lpass_audio_cc_sc7280_match_table[] = {
-	{ .compatible = "qcom,sc7280-lpassaudiocc" },
+	{ .compatible = "qcom,qcm6490-lpassaudiocc", .data = &lpass_audio_cc_reset_sc7280_desc },
+	{ .compatible = "qcom,sc7280-lpassaudiocc", .data = &lpass_audio_cc_sc7280_desc },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, lpass_audio_cc_sc7280_match_table);
@@ -752,13 +763,17 @@ static int lpass_audio_cc_sc7280_probe(struct platform_device *pdev)
 	struct regmap *regmap;
 	int ret;
 
+	desc = device_get_match_data(&pdev->dev);
+
+	if (desc->num_resets)
+		return qcom_cc_probe_by_index(pdev, 1, desc);
+
 	ret = lpass_audio_setup_runtime_pm(pdev);
 	if (ret)
 		return ret;
 
 	lpass_audio_cc_sc7280_regmap_config.name = "lpassaudio_cc";
 	lpass_audio_cc_sc7280_regmap_config.max_register = 0x2f000;
-	desc = &lpass_audio_cc_sc7280_desc;
 
 	regmap = qcom_cc_map(pdev, desc);
 	if (IS_ERR(regmap)) {
@@ -772,7 +787,7 @@ static int lpass_audio_cc_sc7280_probe(struct platform_device *pdev)
 	regmap_write(regmap, 0x4, 0x3b);
 	regmap_write(regmap, 0x8, 0xff05);
 
-	ret = qcom_cc_really_probe(&pdev->dev, &lpass_audio_cc_sc7280_desc, regmap);
+	ret = qcom_cc_really_probe(&pdev->dev, desc, regmap);
 	if (ret) {
 		dev_err(&pdev->dev, "Failed to register LPASS AUDIO CC clocks\n");
 		goto exit;

-- 
2.45.2