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([213.149.38.146]) by smtp.googlemail.com with ESMTPSA id p19-20020a170906229300b0096f5b48fe43sm5913793eja.47.2023.05.24.09.23.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 24 May 2023 09:23:32 -0700 (PDT) From: Robert Marko 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 Subject: [PATCH v2 2/4] soc: qcom: smem: introduce qcom_smem_get_msm_id() Date: Wed, 24 May 2023 18:23:27 +0200 Message-Id: <20230524162329.819770-2-robimarko@gmail.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230524162329.819770-1-robimarko@gmail.com> References: <20230524162329.819770-1-robimarko@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Introduce a helper to return the SoC SMEM ID, which is used to identify the exact SoC model as there may be differences in the same SoC family. Currently, cpufreq-nvmem does this completely in the driver and there has been more interest expresed for other drivers to use this information so lets expose a common helper to prevent redoing it in individual drivers since this field is present on every SMEM table version. Signed-off-by: Robert Marko --- drivers/soc/qcom/smem.c | 19 +++++++++++++++++++ include/linux/soc/qcom/smem.h | 2 ++ 2 files changed, 21 insertions(+) diff --git a/drivers/soc/qcom/smem.c b/drivers/soc/qcom/smem.c index 6be7ea93c78c..0d6ba9bce8cb 100644 --- a/drivers/soc/qcom/smem.c +++ b/drivers/soc/qcom/smem.c @@ -14,6 +14,7 @@ #include #include #include +#include /* * The Qualcomm shared memory system is a allocate only heap structure that @@ -772,6 +773,24 @@ phys_addr_t qcom_smem_virt_to_phys(void *p) } EXPORT_SYMBOL(qcom_smem_virt_to_phys); +/** + * qcom_smem_get_msm_id() - return the SoC ID + * + * Look up SoC ID from HW/SW build ID and return it. + */ +int qcom_smem_get_msm_id(void) +{ + size_t len; + struct socinfo *info; + + info = qcom_smem_get(QCOM_SMEM_HOST_ANY, SMEM_HW_SW_BUILD_ID, &len); + if (IS_ERR(info)) + return PTR_ERR(info); + + return __le32_to_cpu(info->id); +} +EXPORT_SYMBOL(qcom_smem_get_msm_id); + static int qcom_smem_get_sbl_version(struct qcom_smem *smem) { struct smem_header *header; diff --git a/include/linux/soc/qcom/smem.h b/include/linux/soc/qcom/smem.h index 86e1b358688a..6448607239e6 100644 --- a/include/linux/soc/qcom/smem.h +++ b/include/linux/soc/qcom/smem.h @@ -11,4 +11,6 @@ int qcom_smem_get_free_space(unsigned host); phys_addr_t qcom_smem_virt_to_phys(void *p); +int qcom_smem_get_msm_id(void); + #endif