linux-kernel - [PATCH v3 1/5] soc: qcom: llcc: Rename reg_offset structs to reflect LLCC version

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Date:   Thu, 25 Aug 2022 10:08:55 +0530
From:   Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To:     bjorn.andersson@...aro.org, bp@...en8.de, mchehab@...nel.org
Cc:     james.morse@....com, rric@...nel.org,
        linux-arm-msm@...r.kernel.org, linux-edac@...r.kernel.org,
        linux-kernel@...r.kernel.org, quic_tsoni@...cinc.com,
        quic_saipraka@...cinc.com,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Subject: [PATCH v3 1/5] soc: qcom: llcc: Rename reg_offset structs to reflect LLCC version

The register offsets used by the LLCC block retains its layout for multiple
versions. For instance, starting from version v1.0.0 to v2.0.1 the offsets
are same. And starting from v2.1.0, the offsets changed.

But the current reg_offset naming convention is confusing. So to reflect
this change correctly in driver, let's encode the start version from which
the offsets got changed in reg_offset struct name. This will be
llcc_v1_reg_offset for v1.0.0 and llcc_v2_1_reg_offset for v2.1.0.
This will allow multiple SoCs to use the same reg_offset clearly.

And in the future if the offsets got changed again, then that specific
version could be encoded in the struct name.

Suggested-by: Sai Prakash Ranjan <quic_saipraka@...cinc.com>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
---
 drivers/soc/qcom/llcc-qcom.c | 26 ++++++++++++++------------
 1 file changed, 14 insertions(+), 12 deletions(-)

diff --git a/drivers/soc/qcom/llcc-qcom.c b/drivers/soc/qcom/llcc-qcom.c
index 38d7296315a2..0dc2bb0c23cc 100644
--- a/drivers/soc/qcom/llcc-qcom.c
+++ b/drivers/soc/qcom/llcc-qcom.c
@@ -296,12 +296,14 @@ static const struct llcc_slice_config sm8450_data[] =  {
 	{LLCC_AENPU,     8, 2048, 1, 1, 0xFFFF, 0x0,   0, 0, 0, 0, 0, 0, 0 },
 };
 
-static const u32 llcc_v1_2_reg_offset[] = {
+/* LLCC register offset starting from v1.0.0 */
+static const u32 llcc_v1_reg_offset[] = {
 	[LLCC_COMMON_HW_INFO]	= 0x00030000,
 	[LLCC_COMMON_STATUS0]	= 0x0003000c,
 };
 
-static const u32 llcc_v21_reg_offset[] = {
+/* LLCC register offset starting from v2.0.1 */
+static const u32 llcc_v2_1_reg_offset[] = {
 	[LLCC_COMMON_HW_INFO]	= 0x00034000,
 	[LLCC_COMMON_STATUS0]	= 0x0003400c,
 };
@@ -310,70 +312,70 @@ static const struct qcom_llcc_config sc7180_cfg = {
 	.sct_data	= sc7180_data,
 	.size		= ARRAY_SIZE(sc7180_data),
 	.need_llcc_cfg	= true,
-	.reg_offset	= llcc_v1_2_reg_offset,
+	.reg_offset	= llcc_v1_reg_offset,
 };
 
 static const struct qcom_llcc_config sc7280_cfg = {
 	.sct_data	= sc7280_data,
 	.size		= ARRAY_SIZE(sc7280_data),
 	.need_llcc_cfg	= true,
-	.reg_offset	= llcc_v1_2_reg_offset,
+	.reg_offset	= llcc_v1_reg_offset,
 };
 
 static const struct qcom_llcc_config sc8180x_cfg = {
 	.sct_data	= sc8180x_data,
 	.size		= ARRAY_SIZE(sc8180x_data),
 	.need_llcc_cfg	= true,
-	.reg_offset	= llcc_v1_2_reg_offset,
+	.reg_offset	= llcc_v1_reg_offset,
 };
 
 static const struct qcom_llcc_config sc8280xp_cfg = {
 	.sct_data	= sc8280xp_data,
 	.size		= ARRAY_SIZE(sc8280xp_data),
 	.need_llcc_cfg	= true,
-	.reg_offset	= llcc_v1_2_reg_offset,
+	.reg_offset	= llcc_v1_reg_offset,
 };
 
 static const struct qcom_llcc_config sdm845_cfg = {
 	.sct_data	= sdm845_data,
 	.size		= ARRAY_SIZE(sdm845_data),
 	.need_llcc_cfg	= false,
-	.reg_offset	= llcc_v1_2_reg_offset,
+	.reg_offset	= llcc_v1_reg_offset,
 };
 
 static const struct qcom_llcc_config sm6350_cfg = {
 	.sct_data	= sm6350_data,
 	.size		= ARRAY_SIZE(sm6350_data),
 	.need_llcc_cfg	= true,
-	.reg_offset	= llcc_v1_2_reg_offset,
+	.reg_offset	= llcc_v1_reg_offset,
 };
 
 static const struct qcom_llcc_config sm8150_cfg = {
 	.sct_data       = sm8150_data,
 	.size           = ARRAY_SIZE(sm8150_data),
 	.need_llcc_cfg	= true,
-	.reg_offset	= llcc_v1_2_reg_offset,
+	.reg_offset	= llcc_v1_reg_offset,
 };
 
 static const struct qcom_llcc_config sm8250_cfg = {
 	.sct_data       = sm8250_data,
 	.size           = ARRAY_SIZE(sm8250_data),
 	.need_llcc_cfg	= true,
-	.reg_offset	= llcc_v1_2_reg_offset,
+	.reg_offset	= llcc_v1_reg_offset,
 };
 
 static const struct qcom_llcc_config sm8350_cfg = {
 	.sct_data       = sm8350_data,
 	.size           = ARRAY_SIZE(sm8350_data),
 	.need_llcc_cfg	= true,
-	.reg_offset	= llcc_v1_2_reg_offset,
+	.reg_offset	= llcc_v1_reg_offset,
 };
 
 static const struct qcom_llcc_config sm8450_cfg = {
 	.sct_data       = sm8450_data,
 	.size           = ARRAY_SIZE(sm8450_data),
 	.need_llcc_cfg	= true,
-	.reg_offset	= llcc_v21_reg_offset,
+	.reg_offset	= llcc_v2_1_reg_offset,
 };
 
 static struct llcc_drv_data *drv_data = (void *) -EPROBE_DEFER;
-- 
2.25.1