From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932775AbcBWIVd (ORCPT ); Tue, 23 Feb 2016 03:21:33 -0500 Received: from mailgw01.mediatek.com ([210.61.82.183]:45167 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S932551AbcBWIVb (ORCPT ); Tue, 23 Feb 2016 03:21:31 -0500 From: PC Liao To: , CC: , , , , , , , PC Liao Subject: [PATCH] ASoC: mediatek: remove soft reset and add second I2S clock Date: Tue, 23 Feb 2016 16:20:24 +0800 Message-ID: <1456215624-40383-1-git-send-email-pc.liao@mediatek.com> X-Mailer: git-send-email 1.7.9.5 MIME-Version: 1.0 Content-Type: text/plain X-MTK: N Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org To improve I2S flow, this patch removes soft reset and adds second I2S clock to use. Signed-off-by: PC Liao --- sound/soc/mediatek/mtk-afe-pcm.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/sound/soc/mediatek/mtk-afe-pcm.c b/sound/soc/mediatek/mtk-afe-pcm.c index 689c51f..3456bfa 100644 --- a/sound/soc/mediatek/mtk-afe-pcm.c +++ b/sound/soc/mediatek/mtk-afe-pcm.c @@ -283,20 +283,13 @@ static void mtk_afe_set_i2s_enable(struct mtk_afe *afe, bool enable) regmap_read(afe->regmap, AFE_I2S_CON2, &val); if (!!(val & AFE_I2S_CON2_EN) == enable) - return; /* must skip soft reset */ - - /* I2S soft reset begin */ - regmap_update_bits(afe->regmap, AUDIO_TOP_CON1, 0x4, 0x4); + return; /* input */ regmap_update_bits(afe->regmap, AFE_I2S_CON2, 0x1, enable); /* output */ regmap_update_bits(afe->regmap, AFE_I2S_CON1, 0x1, enable); - - /* I2S soft reset end */ - udelay(1); - regmap_update_bits(afe->regmap, AUDIO_TOP_CON1, 0x4, 0); } static int mtk_afe_dais_enable_clks(struct mtk_afe *afe, @@ -365,6 +358,7 @@ static int mtk_afe_i2s_startup(struct snd_pcm_substream *substream, return 0; mtk_afe_dais_enable_clks(afe, afe->clocks[MTK_CLK_I2S1_M], NULL); + mtk_afe_dais_enable_clks(afe, afe->clocks[MTK_CLK_I2S2_M], NULL); regmap_update_bits(afe->regmap, AUDIO_TOP_CON0, AUD_TCON0_PDN_22M | AUD_TCON0_PDN_24M, 0); return 0; @@ -384,6 +378,7 @@ static void mtk_afe_i2s_shutdown(struct snd_pcm_substream *substream, AUD_TCON0_PDN_22M | AUD_TCON0_PDN_24M, AUD_TCON0_PDN_22M | AUD_TCON0_PDN_24M); mtk_afe_dais_disable_clks(afe, afe->clocks[MTK_CLK_I2S1_M], NULL); + mtk_afe_dais_disable_clks(afe, afe->clocks[MTK_CLK_I2S2_M], NULL); } static int mtk_afe_i2s_prepare(struct snd_pcm_substream *substream, @@ -397,6 +392,9 @@ static int mtk_afe_i2s_prepare(struct snd_pcm_substream *substream, mtk_afe_dais_set_clks(afe, afe->clocks[MTK_CLK_I2S1_M], runtime->rate * 256, NULL, 0); + mtk_afe_dais_set_clks(afe, + afe->clocks[MTK_CLK_I2S2_M], runtime->rate * 256, + NULL, 0); /* config I2S */ ret = mtk_afe_set_i2s(afe, substream->runtime->rate); if (ret) -- 1.7.9.5