[Sound-open-firmware] [RFC PATCH v2 4/8] dma: add API's to retrieve platform DMAC information

[Ranjani Sridharan]

This patch adds a couple of API's to retrieve platform DMAC
information.

Signed-off-by: Ranjani Sridharan <ranjani.sridharan at linux.intel.com>
---
 src/include/sof/dma.h         |  4 ++++
 src/platform/apollolake/dma.c | 10 ++++++++++
 src/platform/baytrail/dma.c   | 10 ++++++++++
 src/platform/cannonlake/dma.c | 10 ++++++++++
 src/platform/haswell/dma.c    | 10 ++++++++++
 5 files changed, 44 insertions(+)

diff --git a/src/include/sof/dma.h b/src/include/sof/dma.h
index 2ae4225..8a6e645 100644
--- a/src/include/sof/dma.h
+++ b/src/include/sof/dma.h
@@ -149,6 +149,10 @@ struct dma_int {
 
 struct dma *dma_get(int dmac_id);
 
+struct dma *get_platform_dmacs(void);
+
+int get_platform_num_dmacs(void);
+
 /* initialize all platform DMAC's */
 void dmac_init(void);
 
diff --git a/src/platform/apollolake/dma.c b/src/platform/apollolake/dma.c
index f5e492c..396ad74 100644
--- a/src/platform/apollolake/dma.c
+++ b/src/platform/apollolake/dma.c
@@ -203,3 +203,13 @@ void dmac_init(void)
 			trace_error_value(ret);
 	}
 }
+
+struct dma *get_platform_dmacs(void)
+{
+	return &dma[0];
+}
+
+int get_platform_num_dmacs(void)
+{
+	return ARRAY_SIZE(dma);
+}
diff --git a/src/platform/baytrail/dma.c b/src/platform/baytrail/dma.c
index 95b836c..b05eaa6 100644
--- a/src/platform/baytrail/dma.c
+++ b/src/platform/baytrail/dma.c
@@ -201,3 +201,13 @@ void dmac_init(void)
 			trace_error_value(ret);
 	}
 }
+
+struct dma *get_platform_dmacs(void)
+{
+	return &dma[0];
+}
+
+int get_platform_num_dmacs(void)
+{
+	return ARRAY_SIZE(dma);
+}
diff --git a/src/platform/cannonlake/dma.c b/src/platform/cannonlake/dma.c
index 1ad989f..49e2b71 100644
--- a/src/platform/cannonlake/dma.c
+++ b/src/platform/cannonlake/dma.c
@@ -203,3 +203,13 @@ void dmac_init(void)
 			trace_error_value(ret);
 	}
 }
+
+struct dma *get_platform_dmacs(void)
+{
+	return &dma[0];
+}
+
+int get_platform_num_dmacs(void)
+{
+	return ARRAY_SIZE(dma);
+}
diff --git a/src/platform/haswell/dma.c b/src/platform/haswell/dma.c
index ec48bc8..09f5f6b 100644
--- a/src/platform/haswell/dma.c
+++ b/src/platform/haswell/dma.c
@@ -156,3 +156,13 @@ void dmac_init(void)
 	io_reg_update_bits(SHIM_BASE + SHIM_IMRD,
 			   SHIM_IMRD_DMAC1, 0);
 }
+
+struct dma *get_platform_dmacs(void)
+{
+	return &dma[0];
+}
+
+int get_platform_num_dmacs(void)
+{
+	return ARRAY_SIZE(dma);
+}
-- 
2.17.1