Message ID | 20230531-rpm-rproc-v2-6-56a4a00c8260@gerhold.net |
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State | New |
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Thu, 8 Jun 2023 09:11:13 +0200 (CEST) From: Stephan Gerhold <stephan@gerhold.net> Date: Thu, 08 Jun 2023 09:10:26 +0200 Subject: [PATCH v2 06/12] soc: qcom: smem: Add qcom_smem_is_available() MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20230531-rpm-rproc-v2-6-56a4a00c8260@gerhold.net> References: <20230531-rpm-rproc-v2-0-56a4a00c8260@gerhold.net> In-Reply-To: <20230531-rpm-rproc-v2-0-56a4a00c8260@gerhold.net> To: Bjorn Andersson <andersson@kernel.org> Cc: Andy Gross <agross@kernel.org>, Konrad Dybcio <konrad.dybcio@linaro.org>, Rob Herring <robh+dt@kernel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>, Conor Dooley <conor+dt@kernel.org>, Mathieu Poirier <mathieu.poirier@linaro.org>, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-remoteproc@vger.kernel.org, Stephan Gerhold <stephan@gerhold.net> X-Mailer: b4 0.12.2 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_PASS,SPF_NONE,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: <linux-kernel.vger.kernel.org> X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1768117674319498038?= X-GMAIL-MSGID: =?utf-8?q?1768117674319498038?= |
Series |
Add dedicated device tree node for RPM processor/subsystem
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Commit Message
Stephan Gerhold
June 8, 2023, 7:10 a.m. UTC
Avoid having to look up a dummy item from SMEM to detect if it is already available or if we need to defer probing. Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org> Signed-off-by: Stephan Gerhold <stephan@gerhold.net> --- drivers/soc/qcom/smem.c | 11 +++++++++++ include/linux/soc/qcom/smem.h | 1 + 2 files changed, 12 insertions(+)
diff --git a/drivers/soc/qcom/smem.c b/drivers/soc/qcom/smem.c index b0d59e815c3b..29193151cf4c 100644 --- a/drivers/soc/qcom/smem.c +++ b/drivers/soc/qcom/smem.c @@ -359,6 +359,17 @@ static struct qcom_smem *__smem; /* Timeout (ms) for the trylock of remote spinlocks */ #define HWSPINLOCK_TIMEOUT 1000 +/** + * qcom_smem_is_available() - Check if SMEM is available + * + * Return: true if SMEM is available, false otherwise. + */ +bool qcom_smem_is_available(void) +{ + return !!__smem; +} +EXPORT_SYMBOL(qcom_smem_is_available); + static int qcom_smem_alloc_private(struct qcom_smem *smem, struct smem_partition *part, unsigned item, diff --git a/include/linux/soc/qcom/smem.h b/include/linux/soc/qcom/smem.h index 223db6a9c733..a36a3b9d4929 100644 --- a/include/linux/soc/qcom/smem.h +++ b/include/linux/soc/qcom/smem.h @@ -4,6 +4,7 @@ #define QCOM_SMEM_HOST_ANY -1 +bool qcom_smem_is_available(void); int qcom_smem_alloc(unsigned host, unsigned item, size_t size); void *qcom_smem_get(unsigned host, unsigned item, size_t *size);