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| author | Stephan Gerhold <stephan@gerhold.net> | 2023-06-15 18:50:40 +0200 |
|---|---|---|
| committer | Bjorn Andersson <andersson@kernel.org> | 2023-07-14 07:18:56 +0200 |
| commit | 4dbb9e2322a3a9c912ce796c20c27045ae8dae22 (patch) | |
| tree | 033d5b7ee8203c7662f6c5bb8e2dcf2e943b5830 | |
| parent | dt-bindings: remoteproc: Add Qualcomm RPM processor/subsystem (diff) | |
| download | linux-4dbb9e2322a3a9c912ce796c20c27045ae8dae22.tar.xz linux-4dbb9e2322a3a9c912ce796c20c27045ae8dae22.zip | |
soc: qcom: smem: Add qcom_smem_is_available()
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>
Link: https://lore.kernel.org/r/20230531-rpm-rproc-v3-7-a07dcdefd918@gerhold.net
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
| -rw-r--r-- | drivers/soc/qcom/smem.c | 11 | ||||
| -rw-r--r-- | include/linux/soc/qcom/smem.h | 1 |
2 files changed, 12 insertions, 0 deletions
diff --git a/drivers/soc/qcom/smem.c b/drivers/soc/qcom/smem.c index 776096b2e965..aa4a199efefb 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); |