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From:   Robert Marko <robimarko@gmail.com>
To:     agross@kernel.org, andersson@kernel.org, konrad.dybcio@linaro.org,
        ilia.lin@kernel.org, rafael@kernel.org, viresh.kumar@linaro.org,
        linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
        linux-pm@vger.kernel.org
Cc:     ansuelsmth@gmail.com, Robert Marko <robimarko@gmail.com>
Subject: [PATCH v2 4/4] cpufreq: qcom-nvmem: use helper to get SMEM SoC ID
Date:   Wed, 24 May 2023 18:23:29 +0200
Message-Id: <20230524162329.819770-4-robimarko@gmail.com>
In-Reply-To: <20230524162329.819770-1-robimarko@gmail.com>
References: <20230524162329.819770-1-robimarko@gmail.com>
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Now that SMEM exports a helper to get the SMEM SoC ID lets utilize it.
Currently qcom_cpufreq_get_msm_id() is encoding the returned SMEM SoC ID
into an enum, however there is no reason to do so and we can just match
directly on the SMEM SoC ID as returned by qcom_smem_get_msm_id().

Signed-off-by: Robert Marko <robimarko@gmail.com>
---
Changes in v2:
* Utilize helper exported by SMEM instead of refactoring
qcom_cpufreq_get_msm_id()
---
 drivers/cpufreq/qcom-cpufreq-nvmem.c | 55 +++++-----------------------
 1 file changed, 9 insertions(+), 46 deletions(-)

diff --git a/drivers/cpufreq/qcom-cpufreq-nvmem.c b/drivers/cpufreq/qcom-cpufreq-nvmem.c
index 60e99be2d3db..4293e2888797 100644
--- a/drivers/cpufreq/qcom-cpufreq-nvmem.c
+++ b/drivers/cpufreq/qcom-cpufreq-nvmem.c
@@ -29,16 +29,8 @@
 #include <linux/slab.h>
 #include <linux/soc/qcom/smem.h>
 
-#define MSM_ID_SMEM	137
-
 #include <dt-bindings/arm/qcom,ids.h>
 
-enum _msm8996_version {
-	MSM8996_V3,
-	MSM8996_SG,
-	NUM_OF_MSM8996_VERSIONS,
-};
-
 struct qcom_cpufreq_drv;
 
 struct qcom_cpufreq_match_data {
@@ -135,60 +127,31 @@ static void get_krait_bin_format_b(struct device *cpu_dev,
 	dev_dbg(cpu_dev, "PVS version: %d\n", *pvs_ver);
 }
 
-static enum _msm8996_version qcom_cpufreq_get_msm_id(void)
-{
-	size_t len;
-	u32 *msm_id;
-	enum _msm8996_version version;
-
-	msm_id = qcom_smem_get(QCOM_SMEM_HOST_ANY, MSM_ID_SMEM, &len);
-	if (IS_ERR(msm_id))
-		return NUM_OF_MSM8996_VERSIONS;
-
-	/* The first 4 bytes are format, next to them is the actual msm-id */
-	msm_id++;
-
-	switch ((enum _msm_id)*msm_id) {
-	case QCOM_ID_MSM8996:
-	case QCOM_ID_APQ8096:
-		version = MSM8996_V3;
-		break;
-	case QCOM_ID_MSM8996SG:
-	case QCOM_ID_APQ8096SG:
-		version = MSM8996_SG;
-		break;
-	default:
-		version = NUM_OF_MSM8996_VERSIONS;
-	}
-
-	return version;
-}
-
 static int qcom_cpufreq_kryo_name_version(struct device *cpu_dev,
 					  struct nvmem_cell *speedbin_nvmem,
 					  char **pvs_name,
 					  struct qcom_cpufreq_drv *drv)
 {
 	size_t len;
+	int msm_id;
 	u8 *speedbin;
-	enum _msm8996_version msm8996_version;
 	*pvs_name = NULL;
 
-	msm8996_version = qcom_cpufreq_get_msm_id();
-	if (NUM_OF_MSM8996_VERSIONS == msm8996_version) {
-		dev_err(cpu_dev, "Not Snapdragon 820/821!");
-		return -ENODEV;
-	}
+	msm_id = qcom_smem_get_msm_id();
+	if (msm_id < 0)
+		return msm_id;
 
 	speedbin = nvmem_cell_read(speedbin_nvmem, &len);
 	if (IS_ERR(speedbin))
 		return PTR_ERR(speedbin);
 
-	switch (msm8996_version) {
-	case MSM8996_V3:
+	switch (msm_id) {
+	case QCOM_ID_MSM8996:
+	case QCOM_ID_APQ8096:
 		drv->versions = 1 << (unsigned int)(*speedbin);
 		break;
-	case MSM8996_SG:
+	case QCOM_ID_MSM8996SG:
+	case QCOM_ID_APQ8096SG:
 		drv->versions = 1 << ((unsigned int)(*speedbin) + 4);
 		break;
 	default:
-- 
2.40.1