[alsa-devel] [PATCH v2 4/6] ASoC: Intel: Skylake: Add helpers for SRC and converter modules

[Vinod Koul]

From: Hardik T Shah <hardik.t.shah at intel.com>

SRC and converter modules are required to do frequency and channel
conversion in DSP. Both take base module configuration and additional SRC
and converter parameters. The helpers here are added to calculate the values
for these modules

Signed-off-by: Hardik T Shah <hardik.t.shah at intel.com>
Signed-off-by: Jeeja KP <jeeja.kp at intel.com>
Signed-off-by: Vinod Koul <vinod.koul at intel.com>
---
 sound/soc/intel/skylake/skl-messages.c | 64 +++++++++++++++++++++++++++++++---
 sound/soc/intel/skylake/skl-topology.h | 16 +++++++++
 2 files changed, 76 insertions(+), 4 deletions(-)

diff --git a/sound/soc/intel/skylake/skl-messages.c b/sound/soc/intel/skylake/skl-messages.c
index 0ba13f1e8116..03a80ef8ce01 100644
--- a/sound/soc/intel/skylake/skl-messages.c
+++ b/sound/soc/intel/skylake/skl-messages.c
@@ -381,6 +381,47 @@ static void skl_setup_out_format(struct skl_sst *ctx,
 }
 
 /*
+ * DSP needs SRC module for frequency conversion, SRC takes base module
+ * configuration and the target frequency as extra parameter passed as src
+ * config
+ */
+static void skl_set_src_format(struct skl_sst *ctx,
+			struct skl_module_cfg *mconfig,
+			struct skl_src_module_cfg *src_mconfig)
+{
+	struct skl_module_fmt *fmt = &mconfig->out_fmt;
+
+	skl_set_base_module_format(ctx, mconfig,
+		(struct skl_base_cfg *)src_mconfig);
+
+	src_mconfig->src_cfg = fmt->s_freq;
+}
+
+/*
+ * DSP needs updown module to do channel conversion. updown module take base
+ * module configuration and channel configuration
+ * It also take coefficients and now we have defaults applied here
+ */
+static void skl_set_updown_mixer_format(struct skl_sst *ctx,
+			struct skl_module_cfg *mconfig,
+			struct skl_up_down_mixer_cfg *mixer_mconfig)
+{
+	struct skl_module_fmt *fmt = &mconfig->out_fmt;
+	int i = 0;
+
+	skl_set_base_module_format(ctx,	mconfig,
+		(struct skl_base_cfg *)mixer_mconfig);
+	mixer_mconfig->out_ch_cfg = fmt->ch_cfg;
+
+	/* Select F/W default coefficient */
+	mixer_mconfig->coeff_sel = 0x0;
+
+	/* User coeff, don't care since we are selecting F/W defaults */
+	for (i = 0; i < UP_DOWN_MIXER_MAX_COEFF; i++)
+		mixer_mconfig->coeff[i] = 0xDEADBEEF;
+}
+
+/*
  * 'copier' is DSP internal module which copies data from Host DMA (HDA host
  * dma) or link (hda link, SSP, PDM)
  * Here we calculate the copier module parameters, like PCM format, output
@@ -411,6 +452,12 @@ static u16 skl_get_module_param_size(struct skl_sst *ctx,
 		param_size += mconfig->formats_config.caps_size;
 		return param_size;
 
+	case SKL_MODULE_TYPE_SRCINT:
+		return sizeof(struct skl_src_module_cfg);
+
+	case SKL_MODULE_TYPE_UPDWMIX:
+		return sizeof(struct skl_up_down_mixer_cfg);
+
 	default:
 		/*
 		 * return only base cfg when no specific module type is
@@ -423,11 +470,12 @@ static u16 skl_get_module_param_size(struct skl_sst *ctx,
 }
 
 /*
- * DSP firmware supports various modules like copier etc. These modules
- * required various parameters to be calculated and sent for the module
- * initialization to DSP. By default a generic module needs only base module
- * format configuration
+ * DSP firmware supports various modules like copier, SRC, updown etc.
+ * These modules required various parameters to be calculated and sent for
+ * the module initialization to DSP. By default a generic module needs only
+ * base module format configuration
  */
+
 static int skl_set_module_format(struct skl_sst *ctx,
 			struct skl_module_cfg *module_config,
 			u16 *module_config_size,
@@ -448,6 +496,14 @@ static int skl_set_module_format(struct skl_sst *ctx,
 		skl_set_copier_format(ctx, module_config, *param_data);
 		break;
 
+	case SKL_MODULE_TYPE_SRCINT:
+		skl_set_src_format(ctx, module_config, *param_data);
+		break;
+
+	case SKL_MODULE_TYPE_UPDWMIX:
+		skl_set_updown_mixer_format(ctx, module_config, *param_data);
+		break;
+
 	default:
 		skl_set_base_module_format(ctx, module_config, *param_data);
 		break;
diff --git a/sound/soc/intel/skylake/skl-topology.h b/sound/soc/intel/skylake/skl-topology.h
index 6ba137a43e68..e4b2a339b2f4 100644
--- a/sound/soc/intel/skylake/skl-topology.h
+++ b/sound/soc/intel/skylake/skl-topology.h
@@ -123,6 +123,21 @@ struct skl_cpr_cfg {
 	struct skl_cpr_gtw_cfg gtw_cfg;
 } __packed;
 
+
+struct skl_src_module_cfg {
+	struct skl_base_cfg base_cfg;
+	enum skl_s_freq src_cfg;
+} __packed;
+
+struct skl_up_down_mixer_cfg {
+	struct skl_base_cfg base_cfg;
+	enum skl_ch_cfg out_ch_cfg;
+	/* This should be set to 1 if user coefficients are required */
+	u32 coeff_sel;
+	/* Pass the user coeff in this array */
+	s32 coeff[UP_DOWN_MIXER_MAX_COEFF];
+} __packed;
+
 enum skl_dma_type {
 	SKL_DMA_HDA_HOST_OUTPUT_CLASS = 0,
 	SKL_DMA_HDA_HOST_INPUT_CLASS = 1,
@@ -247,5 +262,6 @@ struct skl_module_cfg {
 	struct skl_pipe *pipe;
 	struct skl_specific_cfg formats_config;
 };
+
 enum skl_bitdepth skl_get_bit_depth(int params);
 #endif
-- 
1.9.1