[Sound-open-firmware] [PATCH 13/15] [RFC][v2]DMIC: Changes to CNL platform

[Seppo Ingalsuo]

Signed-off-by: Seppo Ingalsuo <seppo.ingalsuo at linux.intel.com>
---
 src/platform/cannonlake/dai.c                     | 56 +++++++++++++++++++++++
 src/platform/cannonlake/include/platform/memory.h |  8 +++-
 src/platform/cannonlake/platform.c                | 11 +++++
 3 files changed, 73 insertions(+), 2 deletions(-)

diff --git a/src/platform/cannonlake/dai.c b/src/platform/cannonlake/dai.c
index 5a79614..f195eca 100644
--- a/src/platform/cannonlake/dai.c
+++ b/src/platform/cannonlake/dai.c
@@ -33,6 +33,7 @@
 #include <sof/sof.h>
 #include <sof/dai.h>
 #include <sof/ssp.h>
+#include <sof/dmic.h>
 #include <sof/stream.h>
 #include <sof/audio/component.h>
 #include <platform/memory.h>
@@ -95,6 +96,53 @@ static struct dai ssp[] = {
 	.ops		= &ssp_ops,
 },};
 
+#if defined CONFIG_DMIC
+static struct dai dmic[2] = {
+	/* Testing idea if DMIC FIFOs A and B to access the same microphones
+	 * with two different sample rate and PCM format could be presented
+	 * similarly as SSP0..N. The difference however is that the DMIC
+	 * programming is global and not per FIFO.
+	 */
+
+	/* Primary FIFO A */
+	{
+		.type = SOF_DAI_INTEL_DMIC,
+		.index = 0,
+		.plat_data = {
+			.base = DMIC_BASE,
+			.irq = IRQ_EXT_DMIC_LVL5(0),
+			.fifo[SOF_IPC_STREAM_PLAYBACK] = {
+				.offset = 0, /* No playback */
+				.handshake = 0,
+			},
+			.fifo[SOF_IPC_STREAM_CAPTURE] = {
+				.offset = DMIC_BASE + OUTDATA0,
+				.handshake = DMA_HANDSHAKE_DMIC_CH0,
+			}
+		},
+		.ops = &dmic_ops,
+	},
+	/* Secondary FIFO B */
+	{
+		.type = SOF_DAI_INTEL_DMIC,
+		.index = 1,
+		.plat_data = {
+			.base = DMIC_BASE,
+			.irq = IRQ_EXT_DMIC_LVL5(0),
+			.fifo[SOF_IPC_STREAM_PLAYBACK] = {
+				.offset = 0, /* No playback */
+				.handshake = 0,
+			},
+			.fifo[SOF_IPC_STREAM_CAPTURE] = {
+				.offset = DMIC_BASE + OUTDATA1,
+				.handshake = DMA_HANDSHAKE_DMIC_CH1,
+			}
+		},
+		.ops = &dmic_ops,
+	}
+};
+#endif
+
 struct dai *dai_get(uint32_t type, uint32_t index)
 {
 	int i;
@@ -105,7 +153,15 @@ struct dai *dai_get(uint32_t type, uint32_t index)
 				return &ssp[i];
 		}
 	}
+
+#if defined CONFIG_DMIC
+	if (type == SOF_DAI_INTEL_DMIC) {
+		for (i = 0; i < ARRAY_SIZE(dmic); i++) {
+			if (dmic[i].type == type && dmic[i].index == index)
+				return &dmic[i];
+		}
 	}
+#endif
 
 	return NULL;
 }
diff --git a/src/platform/cannonlake/include/platform/memory.h b/src/platform/cannonlake/include/platform/memory.h
index c7f4750..08cbf28 100644
--- a/src/platform/cannonlake/include/platform/memory.h
+++ b/src/platform/cannonlake/include/platform/memory.h
@@ -108,8 +108,8 @@
 #define L2_HP_SRAM_TLB_BASE	0x00003000
 
 /* DMICs */
-#define DMIC_BASE		0x00004000
-#define DMIC_SIZE		0x00004000
+#define DMIC_BASE		0x00010000
+#define DMIC_SIZE		0x00008000
 
 /* SSP */
 #define SSP_BASE(x)		(0x00077000 + x * SSP_SIZE)
@@ -240,7 +240,11 @@
 #define SOF_TEXT_SIZE		0x18000
 
 /* initialized data */
+#if defined CONFIG_DMIC
+#define SOF_DATA_SIZE		0x1a000
+#else
 #define SOF_DATA_SIZE		0x18000
+#endif
 
 /* bss data */
 #define SOF_BSS_DATA_SIZE		0x8000
diff --git a/src/platform/cannonlake/platform.c b/src/platform/cannonlake/platform.c
index 9c56047..2e85088 100644
--- a/src/platform/cannonlake/platform.c
+++ b/src/platform/cannonlake/platform.c
@@ -210,6 +210,7 @@ int platform_init(struct sof *sof)
 {
 	struct dma *dmac;
 	struct dai *ssp;
+	struct dai *dmic0;
 	int i;
 
 	trace_point(TRACE_BOOT_PLATFORM_ENTRY);
@@ -289,6 +290,16 @@ int platform_init(struct sof *sof)
 		dai_probe(ssp);
 	}
 
+	/* Init DMIC. Note that the two PDM controllers and four microphones
+	 * supported max. those are available in platform are handled by dmic0.
+	 */
+	trace_point(TRACE_BOOT_PLATFORM_DMIC);
+	dmic0 = dai_get(SOF_DAI_INTEL_DMIC, 0);
+	if (!dmic0)
+		return -ENODEV;
+
+	dai_probe(dmic0);
+
 	/* Initialize DMA for Trace*/
 	dma_trace_init_complete(sof->dmat);
 
-- 
2.14.1