From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D1B11ECDE27 for ; Wed, 11 Sep 2019 08:26:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9D9AC20863 for ; Wed, 11 Sep 2019 08:26:59 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="SkDdQyZv" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727096AbfIKI06 (ORCPT ); Wed, 11 Sep 2019 04:26:58 -0400 Received: from mail-pg1-f194.google.com ([209.85.215.194]:37861 "EHLO mail-pg1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726735AbfIKI06 (ORCPT ); Wed, 11 Sep 2019 04:26:58 -0400 Received: by mail-pg1-f194.google.com with SMTP id c17so3394453pgg.4 for ; Wed, 11 Sep 2019 01:26:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=4r0nmZkQSsR2gJHf1JrXB09YJMiVgOB3zCW5D3saotk=; b=SkDdQyZvW4zi69+lyo92l0Kk3Thw/bwocTopP9fFph6zyBMtEB/3j1KLDMRUxqxdz8 +GfX2YdSkpKSLb2PvhEGCOF4NwPA/U6Y1kiPxadIOSTS6TyJZFma9bzPGLj2n8QbL23D Hr+J8YoPtLhznecB9zPycHkXrnWu5k+PMPJ+M= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=4r0nmZkQSsR2gJHf1JrXB09YJMiVgOB3zCW5D3saotk=; b=g+bk53u7k/WViYjxXmUYDxgowiNdssZyiPp2RHeWHOzTv2SpZIbnwt7nGtJYnPfoMy 8uE2eBvgtxsos8V17uqTnhKZ1UCfzb8RgSkstUEMvSpWTOVlMs3S/Fdq2asfe1OQpfgy SBZEsMaJoy/OP/lN5BmQOKhI5ZIvMrEyD/ORn8YYJPkkk8X14GO3/0DOb5tlXzUgVTjT uNM+3pNeAh+TSIyThnl4GROdttsKBe2fzbtI3Smfn3trbbZKn7xwsMFo13IkxITVgMZX n2eT2yG5+mKXYFDw0IWmPxJwxIexQPR3ZlRQoYuPXJ6Bgp2/TnU02VE5s4oeznyijsdc 8SNQ== X-Gm-Message-State: APjAAAV4vfD54PwqKvBMhGHMatlJlvWQmMxcQNYF99xbuDYCJopNj53Q sudw/G8H9h9NbDKWmMay0pg4tiF0OG4= X-Google-Smtp-Source: APXvYqyu86LR1qJn3qdq+8oCOL+6X9M/yekQdNO+TlGPFuebwd792sRf58JYMVY/Ym+ipZH+zK0xSA== X-Received: by 2002:a63:487:: with SMTP id 129mr4981704pge.14.1568190416941; Wed, 11 Sep 2019 01:26:56 -0700 (PDT) Received: from localhost ([2401:fa00:1:10:79b4:bd83:e4a5:a720]) by smtp.gmail.com with ESMTPSA id t12sm22798655pfe.58.2019.09.11.01.26.52 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 11 Sep 2019 01:26:55 -0700 (PDT) From: Cheng-Yi Chiang To: linux-kernel@vger.kernel.org Cc: alsa-devel@alsa-project.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, a.hajda@samsung.com, Laurent.pinchart@ideasonboard.com, airlied@linux.ie, daniel@ffwll.ch, kuninori.morimoto.gx@renesas.com, sam@ravnborg.org, cychiang@chromium.org, dianders@chromium.org, dgreid@chromium.org, tzungbi@chromium.org, zhengxing@rock-chips.com, cain.cai@rock-chips.com, eddie.cai@rock-chips.com, jeffy.chen@rock-chips.com, kuankuan.y@gmail.com, enric.balletbo@collabora.com, dri-devel@lists.freedesktop.org, Neil Armstrong , Jerome Brunet , Jernej Skrabec , Jonas Karlman , Yakir Yang Subject: [PATCH v3] drm: bridge/dw_hdmi: add audio sample channel status setting Date: Wed, 11 Sep 2019 16:26:46 +0800 Message-Id: <20190911082646.134347-1-cychiang@chromium.org> X-Mailer: git-send-email 2.23.0.162.g0b9fbb3734-goog MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Yakir Yang When transmitting IEC60985 linear PCM audio, we configure the Aduio Sample Channel Status information in the IEC60958 frame. The status bit is already available in iec.status of hdmi_codec_params. This fix the issue that audio does not come out on some monitors (e.g. LG 22CV241) Note that these registers are only for interfaces: I2S audio interface, General Purpose Audio (GPA), or AHB audio DMA (AHBAUDDMA). For S/PDIF interface this information comes from the stream. Currently this function dw_hdmi_set_channel_status is only called from dw-hdmi-i2s-audio in I2S setup. Signed-off-by: Yakir Yang Signed-off-by: Cheng-Yi Chiang --- Change from v2 to v3: 1. Reuse what is already set in iec.status in hw_param. 2. Remove all useless definition of registers and values. 3. Note that the original sampling frequency is not written to the channel status as we reuse create_iec958_consumer in pcm_iec958.c. Without that it can still play audio fine. .../drm/bridge/synopsys/dw-hdmi-i2s-audio.c | 1 + drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 20 +++++++++++++++++++ drivers/gpu/drm/bridge/synopsys/dw-hdmi.h | 2 ++ include/drm/bridge/dw_hdmi.h | 1 + 4 files changed, 24 insertions(+) diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c index 34d8e837555f..20f4f92dd866 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c @@ -102,6 +102,7 @@ static int dw_hdmi_i2s_hw_params(struct device *dev, void *data, } dw_hdmi_set_sample_rate(hdmi, hparms->sample_rate); + dw_hdmi_set_channel_status(hdmi, hparms->iec.status); dw_hdmi_set_channel_count(hdmi, hparms->channels); dw_hdmi_set_channel_allocation(hdmi, hparms->cea.channel_allocation); diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c index bd65d0479683..aa7efd4da1c8 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c @@ -582,6 +582,26 @@ static unsigned int hdmi_compute_n(unsigned int freq, unsigned long pixel_clk) return n; } +/* + * When transmitting IEC60958 linear PCM audio, these registers allow to + * configure the channel status information of all the channel status + * bits in the IEC60958 frame. For the moment this configuration is only + * used when the I2S audio interface, General Purpose Audio (GPA), + * or AHB audio DMA (AHBAUDDMA) interface is active + * (for S/PDIF interface this information comes from the stream). + */ +void dw_hdmi_set_channel_status(struct dw_hdmi *hdmi, + u8 *channel_status) +{ + /* + * Set channel status register for frequency and word length. + * Use default values for other registers. + */ + hdmi_writeb(hdmi, channel_status[3], HDMI_FC_AUDSCHNLS7); + hdmi_writeb(hdmi, channel_status[4], HDMI_FC_AUDSCHNLS8); +} +EXPORT_SYMBOL_GPL(dw_hdmi_set_channel_status); + static void hdmi_set_clk_regenerator(struct dw_hdmi *hdmi, unsigned long pixel_clk, unsigned int sample_rate) { diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h index 6988f12d89d9..fcff5059db24 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h @@ -158,6 +158,8 @@ #define HDMI_FC_SPDDEVICEINF 0x1062 #define HDMI_FC_AUDSCONF 0x1063 #define HDMI_FC_AUDSSTAT 0x1064 +#define HDMI_FC_AUDSCHNLS7 0x106e +#define HDMI_FC_AUDSCHNLS8 0x106f #define HDMI_FC_DATACH0FILL 0x1070 #define HDMI_FC_DATACH1FILL 0x1071 #define HDMI_FC_DATACH2FILL 0x1072 diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h index cf528c289857..4b3e863c4f8a 100644 --- a/include/drm/bridge/dw_hdmi.h +++ b/include/drm/bridge/dw_hdmi.h @@ -156,6 +156,7 @@ void dw_hdmi_setup_rx_sense(struct dw_hdmi *hdmi, bool hpd, bool rx_sense); void dw_hdmi_set_sample_rate(struct dw_hdmi *hdmi, unsigned int rate); void dw_hdmi_set_channel_count(struct dw_hdmi *hdmi, unsigned int cnt); +void dw_hdmi_set_channel_status(struct dw_hdmi *hdmi, u8 *channel_status); void dw_hdmi_set_channel_allocation(struct dw_hdmi *hdmi, unsigned int ca); void dw_hdmi_audio_enable(struct dw_hdmi *hdmi); void dw_hdmi_audio_disable(struct dw_hdmi *hdmi); -- 2.23.0.162.g0b9fbb3734-goog