From patchwork Thu May 25 12:09:54 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robert Marko X-Patchwork-Id: 686027 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C0698C7EE2D for ; Thu, 25 May 2023 12:10:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241122AbjEYMKH (ORCPT ); Thu, 25 May 2023 08:10:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47014 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240814AbjEYMKF (ORCPT ); Thu, 25 May 2023 08:10:05 -0400 Received: from mail-ed1-x52a.google.com (mail-ed1-x52a.google.com [IPv6:2a00:1450:4864:20::52a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 24D0C12E; Thu, 25 May 2023 05:10:04 -0700 (PDT) Received: by mail-ed1-x52a.google.com with SMTP id 4fb4d7f45d1cf-510eb3dbaaeso4019607a12.1; Thu, 25 May 2023 05:10:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1685016602; x=1687608602; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=QpR8//zxRxGnU7TlHH6wfvPeUzP0bueyOOjz5my8OPQ=; b=JyAUpP40azFAgzu44H45xkrBVGgHg0wB8bsU3WOWhTNG+cQI0cMJ26LU3/XsvYfeK0 FKbYqDbwE4XY2vUOU2q/MjWBaMMiBbCXECzYx8cCZZbC91FfKzpuDOZvkF80oRHD46Yw t+29ULqtPSATjFy6mFjhdLxjG6LwcwA76Tq4hXapj+K7OAB2pac5qXgio8LT8Id7/uLb ApRCPk16QmrF19OQrOhYK9mIQ1GuN5XAtQasOySTutrUCjkJn1FzcrEvdHHeWmUB2JBx jPhU8HNxen/pQx0O50DIo8oz/qC0fq4M/TvIU/OVAEgYRYyHVPrymygIq2F4bgRAd7Hu 4Qbw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1685016602; x=1687608602; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=QpR8//zxRxGnU7TlHH6wfvPeUzP0bueyOOjz5my8OPQ=; b=YjWbXTnTEZUF1HRm55g8upgvcOWyeZIgOY3Lb070cahCg7pptXWdrvkS18fjtdwfld ElmZcmvjstmgA6Z1oxaT919Pf6OvkMVl8Dk22PaHtvHhGmy69DL1StZbMX5hiN25zC98 2m8PdQpAaNPjBZW5E9cF9gkyDcdNA4c6Q4M7g3mBod5Bd+8mrcZYyGcSJqXMI0Z4gBoV b+75WNeuC6DvsU/ianSLjdeD6enwUVnDL+KfdUES7CpOdTALemBVq+ZVDe7dZLy6yJUt sNPrLdozjYNahMgZcWpf4U8yrsoupsC5o46Oh3Fn5JwVq+QosbxHfcnwHRBrYG9ZJFsA e4lQ== X-Gm-Message-State: AC+VfDzGJMwEB2R6VdrOAFD3iqHZiHH2J4hs4uHIzZcTrQzWwtSDEVIR unemRQqnhjexwwUM9CrUM2Y3VM+1eemvwA== X-Google-Smtp-Source: ACHHUZ5aBde6tPLcqBDGHfEVvTLRdXHQJIeSYsVLxQ3Nb++kc357mWQ9s7DWheGjMzk0r4XiWUhcng== X-Received: by 2002:a17:906:9b95:b0:96f:1f79:c0a6 with SMTP id dd21-20020a1709069b9500b0096f1f79c0a6mr1186172ejc.70.1685016602362; Thu, 25 May 2023 05:10:02 -0700 (PDT) Received: from fedora.. ([213.149.38.146]) by smtp.googlemail.com with ESMTPSA id d5-20020a170906640500b0094ef923a6ccsm765216ejm.219.2023.05.25.05.10.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 25 May 2023 05:10:01 -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 v3 3/5] soc: qcom: smem: introduce qcom_smem_get_msm_id() Date: Thu, 25 May 2023 14:09:54 +0200 Message-Id: <20230525120956.3095317-3-robimarko@gmail.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230525120956.3095317-1-robimarko@gmail.com> References: <20230525120956.3095317-1-robimarko@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@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 --- Changes in v3: * Change export to EXPORT_SYMBOL_GPL * Use an argument for returning SoC ID * Update kerneldoc --- drivers/soc/qcom/smem.c | 24 ++++++++++++++++++++++++ include/linux/soc/qcom/smem.h | 2 ++ 2 files changed, 26 insertions(+) diff --git a/drivers/soc/qcom/smem.c b/drivers/soc/qcom/smem.c index bc98520c4969..185ed0da11a1 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 +773,29 @@ phys_addr_t qcom_smem_virt_to_phys(void *p) } EXPORT_SYMBOL_GPL(qcom_smem_virt_to_phys); +/** + * qcom_smem_get_msm_id() - return the SoC ID + * @id: On success, we return the SoC ID here. + * + * Look up SoC ID from HW/SW build ID and return it. + * + * Return: 0 on success, negative errno on failure. + */ +int qcom_smem_get_msm_id(u32 *id) +{ + 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); + + *id = info->id; + + return 0; +} +EXPORT_SYMBOL_GPL(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..cb204ad6373c 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(u32 *id); + #endif