From 939df3ada789ccd61a01721df8fc7955aab3aad7 Mon Sep 17 00:00:00 2001 From: Ramesh Babu Date: Mon, 19 Jun 2017 11:59:19 +0530 Subject: [PATCH] ASoC: Intel: Skylake: Add deep buffer support With this patch, the dma buffer size is fetched from topology binary. This buffer size is applicable for gateway copier modules. Now that we can configure DSP dma buffer size, the device can support deep buffer playback. DSP fetches large buffer and can result fewer wakes, which helps in power reduction. Signed-off-by: Ramesh Babu Signed-off-by: Subhransu S. Prusty Acked-By: Vinod Koul Signed-off-by: Mark Brown --- include/uapi/sound/snd_sst_tokens.h | 5 ++++- sound/soc/intel/skylake/skl-topology.c | 4 ++++ sound/soc/intel/skylake/skl-topology.h | 1 + 3 files changed, 9 insertions(+), 1 deletion(-) diff --git a/include/uapi/sound/snd_sst_tokens.h b/include/uapi/sound/snd_sst_tokens.h index 89b82f6..dedb205 100644 --- a/include/uapi/sound/snd_sst_tokens.h +++ b/include/uapi/sound/snd_sst_tokens.h @@ -161,6 +161,8 @@ * * %SKL_TKL_U32_D0I3_CAPS: Specifies the D0i3 capability for module * + * %SKL_TKN_U32_DMA_BUF_SIZE: DMA buffer size in millisec + * * module_id and loadable flags dont have tokens as these values will be * read from the DSP FW manifest */ @@ -215,7 +217,8 @@ enum SKL_TKNS { SKL_TKN_U32_PMODE, SKL_TKL_U32_D0I3_CAPS, /* Typo added at v4.10 */ SKL_TKN_U32_D0I3_CAPS = SKL_TKL_U32_D0I3_CAPS, - SKL_TKN_MAX = SKL_TKN_U32_D0I3_CAPS, + SKL_TKN_U32_DMA_BUF_SIZE, + SKL_TKN_MAX = SKL_TKN_U32_DMA_BUF_SIZE, }; #endif diff --git a/sound/soc/intel/skylake/skl-topology.c b/sound/soc/intel/skylake/skl-topology.c index 212cee7..9569f118 100644 --- a/sound/soc/intel/skylake/skl-topology.c +++ b/sound/soc/intel/skylake/skl-topology.c @@ -2212,6 +2212,10 @@ static int skl_tplg_get_token(struct device *dev, break; + case SKL_TKN_U32_DMA_BUF_SIZE: + mconfig->dma_buffer_size = tkn_elem->value; + break; + case SKL_TKN_U8_IN_PIN_TYPE: case SKL_TKN_U8_OUT_PIN_TYPE: case SKL_TKN_U8_CONN_TYPE: diff --git a/sound/soc/intel/skylake/skl-topology.h b/sound/soc/intel/skylake/skl-topology.h index 3f51a0a..c25e886 100644 --- a/sound/soc/intel/skylake/skl-topology.h +++ b/sound/soc/intel/skylake/skl-topology.h @@ -321,6 +321,7 @@ struct skl_module_cfg { u32 vbus_id; u32 mem_pages; enum d0i3_capability d0i3_caps; + u32 dma_buffer_size; /* in milli seconds */ struct skl_module_pin *m_in_pin; struct skl_module_pin *m_out_pin; enum skl_module_type m_type; -- 2.7.4