lib: dma: add user-space support for dma_suspend/resume calls

Extend coverage of the Zephyr DAI interface to include dma_suspend()
and dma_resume() calls exposed as syscalls. This allows e.g. to run the
DAI module in a user thread.

Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>

Author: kv2019i

zephyr/include/sof/lib/sof_dma.h

@@ -51,6 +51,10 @@ __syscall int sof_dma_get_status(struct sof_dma *dma, uint32_t channel, struct d
 
 __syscall int sof_dma_reload(struct sof_dma *dma, uint32_t channel, size_t size);
 
+__syscall int sof_dma_suspend(struct sof_dma *dma, uint32_t channel);
+
+__syscall int sof_dma_resume(struct sof_dma *dma, uint32_t channel);
+
 static inline int z_impl_sof_dma_get_attribute(struct sof_dma *dma, uint32_t type, uint32_t *value)
 {
 	return dma_get_attribute(dma->z_dev, type, value);
@@ -95,6 +99,16 @@ static inline int z_impl_sof_dma_reload(struct sof_dma *dma, uint32_t channel, s
 	return dma_reload(dma->z_dev, channel, 0, 0, size);
 }
 
+static inline int z_impl_sof_dma_suspend(struct sof_dma *dma, uint32_t channel)
+{
+	return dma_suspend(dma->z_dev, channel);
+}
+
+static inline int z_impl_sof_dma_resume(struct sof_dma *dma, uint32_t channel)
+{
+	return dma_resume(dma->z_dev, channel);
+}
+
 #ifdef CONFIG_SOF_USERSPACE_INTERFACE_DMA
 
 /* include definitions from generated file */
@@ -164,6 +178,16 @@ static inline int sof_dma_reload(struct sof_dma *dma, uint32_t channel, size_t s
 	return z_impl_sof_dma_reload(dma, channel, size);
 }
 
+static inline int sof_dma_suspend(struct sof_dma *dma, uint32_t channel)
+{
+	return z_impl_sof_dma_suspend(dma, channel);
+}
+
+static inline int sof_dma_resume(struct sof_dma *dma, uint32_t channel)
+{
+	return z_impl_sof_dma_resume(dma, channel);
+}
+
 #endif /* CONFIG_SOF_USERSPACE_INTERFACE_DMA */
 
 #endif

zephyr/syscall/sof_dma.c

@@ -235,4 +235,20 @@ static inline int z_vrfy_sof_dma_reload(struct sof_dma *dma, uint32_t channel, s
 }
 #include <zephyr/syscalls/sof_dma_reload_mrsh.c>
 
+static inline int z_vrfy_sof_dma_suspend(struct sof_dma *dma, uint32_t channel)
+{
+	K_OOPS(!sof_dma_is_valid(dma));
+
+	return z_impl_sof_dma_suspend(dma, channel);
+}
+#include <zephyr/syscalls/sof_dma_suspend_mrsh.c>
+
+static inline int z_vrfy_sof_dma_resume(struct sof_dma *dma, uint32_t channel)
+{
+	K_OOPS(!sof_dma_is_valid(dma));
+
+	return z_impl_sof_dma_resume(dma, channel);
+}
+#include <zephyr/syscalls/sof_dma_resume_mrsh.c>
+
 #endif /* CONFIG_SOF_USERSPACE_INTERFACE_DMA */