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=-8.2 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 0ABB9C3A5A2 for ; Tue, 3 Sep 2019 09:53:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BEB5D21881 for ; Tue, 3 Sep 2019 09:53:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=baylibre-com.20150623.gappssmtp.com header.i=@baylibre-com.20150623.gappssmtp.com header.b="kIYuXA48" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728541AbfICJxj (ORCPT ); Tue, 3 Sep 2019 05:53:39 -0400 Received: from mail-wm1-f68.google.com ([209.85.128.68]:54382 "EHLO mail-wm1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726840AbfICJxi (ORCPT ); Tue, 3 Sep 2019 05:53:38 -0400 Received: by mail-wm1-f68.google.com with SMTP id k2so15951794wmj.4 for ; Tue, 03 Sep 2019 02:53:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20150623.gappssmtp.com; s=20150623; h=subject:to:cc:references:from:openpgp:autocrypt:organization :message-id:date:user-agent:mime-version:in-reply-to :content-language:content-transfer-encoding; bh=3svFEUFdlGRo7s6oU/gAKMoNrDtitSPWMnmTngxdf5A=; b=kIYuXA48J8yijkoUvvwSReT8C7vDXIE1MLur0hYz+TkH/SXUuow+Z9RpdecahEHqfT gfMPla1YRabYeDgUmmlkI8D2h8jprn/SfljLi+ALfCaC5DkQKMTAK0wMqVl6du0USNUP 8Q9gmtoY2VKhAzFr3dUpG6KeMi4nQnXYJ//3tyrry7WaQ5cA8e5yAWcsNuXjC2NU6cQ2 OY1QInnD6h/5eRALoJF5X41M/S+WlVJY7NPvflic7F82lpWhjVR8SpEYC2f2fKFbBKRK V97d6ec4ppirWFT5oWkF04LkBSC7guAniEjV1TjuaQn/Ki9QMH3obFR5ePfsUn0aGeOl gcVw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:openpgp:autocrypt :organization:message-id:date:user-agent:mime-version:in-reply-to :content-language:content-transfer-encoding; bh=3svFEUFdlGRo7s6oU/gAKMoNrDtitSPWMnmTngxdf5A=; b=g2W4FTS3ZAG3/EbuCdI5ZYRO/7N2P+PBdVkKEno4l1zlfdFB1r65Rh/kQeAzlQ4IZE wrZm+9YFU49BpIu68PTqpeAohVsuMIRiqO3o5d6aBU45raNlj5E7ljzpUAwZPNtc30fU EzrAH0IAJDlv6sTqADHGxW0lNG+sjidZICUG9pCBaBnf7VS/RwPKill48Peun5Yad73q pOta2b7ZX/N28QhEPbpN2FVonocN8rB2VrAxL/W8w+mOZkYaL2FYmk+bTiwKAjdjh+jF cHF9BwvoTvxa5rj5hIbTRnAV6oFNB+C/tvp4qa0nqLJszZMr1gE8mp5Qp/ZSFj0qRGOI pcWA== X-Gm-Message-State: APjAAAWJ/lqmHtT2kC1ruGZ11HSTX0uuuIwZPPZgJsOBlrzvA6LD9zK7 Fos2TNi+Z193HqDRBw0ZyGUTsw== X-Google-Smtp-Source: APXvYqyTtwuHZrhUbdBQZ7Or0d1HOtYQZHQdZrPahyeZ5TF7qNJyfrFtU4pNalcJKWCYtGBlnIJk7Q== X-Received: by 2002:a7b:c186:: with SMTP id y6mr13960388wmi.12.1567504414674; Tue, 03 Sep 2019 02:53:34 -0700 (PDT) Received: from [10.1.2.12] (lmontsouris-657-1-212-31.w90-63.abo.wanadoo.fr. [90.63.244.31]) by smtp.gmail.com with ESMTPSA id r18sm20184350wrx.36.2019.09.03.02.53.33 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 03 Sep 2019 02:53:34 -0700 (PDT) Subject: Re: [PATCH] drm: bridge/dw_hdmi: add audio sample channel status setting To: Cheng-Yi Chiang , linux-kernel@vger.kernel.org Cc: alsa-devel@alsa-project.org, tzungbi@chromium.org, zhengxing@rock-chips.com, kuninori.morimoto.gx@renesas.com, a.hajda@samsung.com, airlied@linux.ie, kuankuan.y@gmail.com, jeffy.chen@rock-chips.com, dianders@chromium.org, dri-devel@lists.freedesktop.org, cain.cai@rock-chips.com, linux-rockchip@lists.infradead.org, eddie.cai@rock-chips.com, Laurent.pinchart@ideasonboard.com, daniel@ffwll.ch, Yakir Yang , enric.balletbo@collabora.com, dgreid@chromium.org, sam@ravnborg.org, linux-arm-kernel@lists.infradead.org References: <20190903055103.134764-1-cychiang@chromium.org> From: Neil Armstrong Openpgp: preference=signencrypt Autocrypt: addr=narmstrong@baylibre.com; prefer-encrypt=mutual; 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Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <20190903055103.134764-1-cychiang@chromium.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, On 03/09/2019 07:51, Cheng-Yi Chiang wrote: > From: Yakir Yang > > When transmitting IEC60985 linear PCM audio, we configure the > Audio Sample Channel Status information of all the channel > status bits in the IEC60958 frame. > Refer to 60958-3 page 10 for frequency, original frequency, and > wordlength setting. > > This fix the issue that audio does not come out on some monitors > (e.g. LG 22CV241) > > Signed-off-by: Yakir Yang > Signed-off-by: Cheng-Yi Chiang > --- > drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 59 +++++++++++++++++++++++ > drivers/gpu/drm/bridge/synopsys/dw-hdmi.h | 20 ++++++++ > 2 files changed, 79 insertions(+) > > diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c > index bd65d0479683..34d46e25d610 100644 > --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c > +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c > @@ -582,6 +582,63 @@ static unsigned int hdmi_compute_n(unsigned int freq, unsigned long pixel_clk) > return n; > } > > +static void hdmi_set_schnl(struct dw_hdmi *hdmi) > +{ > + u8 aud_schnl_samplerate; > + u8 aud_schnl_8; > + > + /* These registers are on RK3288 using version 2.0a. */ > + if (hdmi->version != 0x200a) > + return; Are these limited to the 2.0a version *in* RK3288, or 2.0a version on all SoCs ? > + > + switch (hdmi->sample_rate) { > + case 32000: > + aud_schnl_samplerate = HDMI_FC_AUDSCHNLS7_SMPRATE_32K; > + break; > + case 44100: > + aud_schnl_samplerate = HDMI_FC_AUDSCHNLS7_SMPRATE_44K1; > + break; > + case 48000: > + aud_schnl_samplerate = HDMI_FC_AUDSCHNLS7_SMPRATE_48K; > + break; > + case 88200: > + aud_schnl_samplerate = HDMI_FC_AUDSCHNLS7_SMPRATE_88K2; > + break; > + case 96000: > + aud_schnl_samplerate = HDMI_FC_AUDSCHNLS7_SMPRATE_96K; > + break; > + case 176400: > + aud_schnl_samplerate = HDMI_FC_AUDSCHNLS7_SMPRATE_176K4; > + break; > + case 192000: > + aud_schnl_samplerate = HDMI_FC_AUDSCHNLS7_SMPRATE_192K; > + break; > + case 768000: > + aud_schnl_samplerate = HDMI_FC_AUDSCHNLS7_SMPRATE_768K; > + break; > + default: > + dev_warn(hdmi->dev, "Unsupported audio sample rate (%u)\n", > + hdmi->sample_rate); > + return; > + } > + > + /* set channel status register */ > + hdmi_modb(hdmi, aud_schnl_samplerate, HDMI_FC_AUDSCHNLS7_SMPRATE_MASK, > + HDMI_FC_AUDSCHNLS7); > + > + /* > + * Set original frequency to be the same as frequency. > + * Use one-complement value as stated in IEC60958-3 page 13. > + */ > + aud_schnl_8 = (~aud_schnl_samplerate) << > + HDMI_FC_AUDSCHNLS8_ORIGSAMPFREQ_OFFSET; > + > + /* This means word length is 16 bit. Refer to IEC60958-3 page 12. */ > + aud_schnl_8 |= 2 << HDMI_FC_AUDSCHNLS8_WORDLEGNTH_OFFSET; > + > + hdmi_writeb(hdmi, aud_schnl_8, HDMI_FC_AUDSCHNLS8); > +} > + > static void hdmi_set_clk_regenerator(struct dw_hdmi *hdmi, > unsigned long pixel_clk, unsigned int sample_rate) > { > @@ -620,6 +677,8 @@ static void hdmi_set_clk_regenerator(struct dw_hdmi *hdmi, > hdmi->audio_cts = cts; > hdmi_set_cts_n(hdmi, cts, hdmi->audio_enable ? n : 0); > spin_unlock_irq(&hdmi->audio_lock); > + > + hdmi_set_schnl(hdmi); > } > > static void hdmi_init_clk_regenerator(struct dw_hdmi *hdmi) > diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h > index 6988f12d89d9..619ebc1c8354 100644 > --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h > +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h > @@ -158,6 +158,17 @@ > #define HDMI_FC_SPDDEVICEINF 0x1062 > #define HDMI_FC_AUDSCONF 0x1063 > #define HDMI_FC_AUDSSTAT 0x1064 > +#define HDMI_FC_AUDSV 0x1065 > +#define HDMI_FC_AUDSU 0x1066 > +#define HDMI_FC_AUDSCHNLS0 0x1067 > +#define HDMI_FC_AUDSCHNLS1 0x1068 > +#define HDMI_FC_AUDSCHNLS2 0x1069 > +#define HDMI_FC_AUDSCHNLS3 0x106a > +#define HDMI_FC_AUDSCHNLS4 0x106b > +#define HDMI_FC_AUDSCHNLS5 0x106c > +#define HDMI_FC_AUDSCHNLS6 0x106d > +#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 > @@ -706,6 +717,15 @@ enum { > /* HDMI_FC_AUDSCHNLS7 field values */ > HDMI_FC_AUDSCHNLS7_ACCURACY_OFFSET = 4, > HDMI_FC_AUDSCHNLS7_ACCURACY_MASK = 0x30, > + HDMI_FC_AUDSCHNLS7_SMPRATE_MASK = 0x0f, > + HDMI_FC_AUDSCHNLS7_SMPRATE_192K = 0xe, > + HDMI_FC_AUDSCHNLS7_SMPRATE_176K4 = 0xc, > + HDMI_FC_AUDSCHNLS7_SMPRATE_96K = 0xa, > + HDMI_FC_AUDSCHNLS7_SMPRATE_768K = 0x9, > + HDMI_FC_AUDSCHNLS7_SMPRATE_88K2 = 0x8, > + HDMI_FC_AUDSCHNLS7_SMPRATE_32K = 0x3, > + HDMI_FC_AUDSCHNLS7_SMPRATE_48K = 0x2, > + HDMI_FC_AUDSCHNLS7_SMPRATE_44K1 = 0x0, > > /* HDMI_FC_AUDSCHNLS8 field values */ > HDMI_FC_AUDSCHNLS8_ORIGSAMPFREQ_MASK = 0xf0, > 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=-8.2 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=unavailable 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 22B68C3A5A2 for ; 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Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <20190903055103.134764-1-cychiang@chromium.org> Content-Language: en-US Cc: alsa-devel@alsa-project.org, tzungbi@chromium.org, zhengxing@rock-chips.com, kuninori.morimoto.gx@renesas.com, linux-rockchip@lists.infradead.org, airlied@linux.ie, sam@ravnborg.org, jeffy.chen@rock-chips.com, dianders@chromium.org, dri-devel@lists.freedesktop.org, cain.cai@rock-chips.com, a.hajda@samsung.com, eddie.cai@rock-chips.com, Laurent.pinchart@ideasonboard.com, daniel@ffwll.ch, Yakir Yang , enric.balletbo@collabora.com, dgreid@chromium.org, kuankuan.y@gmail.com, linux-arm-kernel@lists.infradead.org Subject: Re: [alsa-devel] [PATCH] drm: bridge/dw_hdmi: add audio sample channel status setting X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" Hi, On 03/09/2019 07:51, Cheng-Yi Chiang wrote: > From: Yakir Yang > > When transmitting IEC60985 linear PCM audio, we configure the > Audio Sample Channel Status information of all the channel > status bits in the IEC60958 frame. > Refer to 60958-3 page 10 for frequency, original frequency, and > wordlength setting. > > This fix the issue that audio does not come out on some monitors > (e.g. LG 22CV241) > > Signed-off-by: Yakir Yang > Signed-off-by: Cheng-Yi Chiang > --- > drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 59 +++++++++++++++++++++++ > drivers/gpu/drm/bridge/synopsys/dw-hdmi.h | 20 ++++++++ > 2 files changed, 79 insertions(+) > > diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c > index bd65d0479683..34d46e25d610 100644 > --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c > +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c > @@ -582,6 +582,63 @@ static unsigned int hdmi_compute_n(unsigned int freq, unsigned long pixel_clk) > return n; > } > > +static void hdmi_set_schnl(struct dw_hdmi *hdmi) > +{ > + u8 aud_schnl_samplerate; > + u8 aud_schnl_8; > + > + /* These registers are on RK3288 using version 2.0a. */ > + if (hdmi->version != 0x200a) > + return; Are these limited to the 2.0a version *in* RK3288, or 2.0a version on all SoCs ? > + > + switch (hdmi->sample_rate) { > + case 32000: > + aud_schnl_samplerate = HDMI_FC_AUDSCHNLS7_SMPRATE_32K; > + break; > + case 44100: > + aud_schnl_samplerate = HDMI_FC_AUDSCHNLS7_SMPRATE_44K1; > + break; > + case 48000: > + aud_schnl_samplerate = HDMI_FC_AUDSCHNLS7_SMPRATE_48K; > + break; > + case 88200: > + aud_schnl_samplerate = HDMI_FC_AUDSCHNLS7_SMPRATE_88K2; > + break; > + case 96000: > + aud_schnl_samplerate = HDMI_FC_AUDSCHNLS7_SMPRATE_96K; > + break; > + case 176400: > + aud_schnl_samplerate = HDMI_FC_AUDSCHNLS7_SMPRATE_176K4; > + break; > + case 192000: > + aud_schnl_samplerate = HDMI_FC_AUDSCHNLS7_SMPRATE_192K; > + break; > + case 768000: > + aud_schnl_samplerate = HDMI_FC_AUDSCHNLS7_SMPRATE_768K; > + break; > + default: > + dev_warn(hdmi->dev, "Unsupported audio sample rate (%u)\n", > + hdmi->sample_rate); > + return; > + } > + > + /* set channel status register */ > + hdmi_modb(hdmi, aud_schnl_samplerate, HDMI_FC_AUDSCHNLS7_SMPRATE_MASK, > + HDMI_FC_AUDSCHNLS7); > + > + /* > + * Set original frequency to be the same as frequency. > + * Use one-complement value as stated in IEC60958-3 page 13. > + */ > + aud_schnl_8 = (~aud_schnl_samplerate) << > + HDMI_FC_AUDSCHNLS8_ORIGSAMPFREQ_OFFSET; > + > + /* This means word length is 16 bit. Refer to IEC60958-3 page 12. */ > + aud_schnl_8 |= 2 << HDMI_FC_AUDSCHNLS8_WORDLEGNTH_OFFSET; > + > + hdmi_writeb(hdmi, aud_schnl_8, HDMI_FC_AUDSCHNLS8); > +} > + > static void hdmi_set_clk_regenerator(struct dw_hdmi *hdmi, > unsigned long pixel_clk, unsigned int sample_rate) > { > @@ -620,6 +677,8 @@ static void hdmi_set_clk_regenerator(struct dw_hdmi *hdmi, > hdmi->audio_cts = cts; > hdmi_set_cts_n(hdmi, cts, hdmi->audio_enable ? n : 0); > spin_unlock_irq(&hdmi->audio_lock); > + > + hdmi_set_schnl(hdmi); > } > > static void hdmi_init_clk_regenerator(struct dw_hdmi *hdmi) > diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h > index 6988f12d89d9..619ebc1c8354 100644 > --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h > +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h > @@ -158,6 +158,17 @@ > #define HDMI_FC_SPDDEVICEINF 0x1062 > #define HDMI_FC_AUDSCONF 0x1063 > #define HDMI_FC_AUDSSTAT 0x1064 > +#define HDMI_FC_AUDSV 0x1065 > +#define HDMI_FC_AUDSU 0x1066 > +#define HDMI_FC_AUDSCHNLS0 0x1067 > +#define HDMI_FC_AUDSCHNLS1 0x1068 > +#define HDMI_FC_AUDSCHNLS2 0x1069 > +#define HDMI_FC_AUDSCHNLS3 0x106a > +#define HDMI_FC_AUDSCHNLS4 0x106b > +#define HDMI_FC_AUDSCHNLS5 0x106c > +#define HDMI_FC_AUDSCHNLS6 0x106d > +#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 > @@ -706,6 +717,15 @@ enum { > /* HDMI_FC_AUDSCHNLS7 field values */ > HDMI_FC_AUDSCHNLS7_ACCURACY_OFFSET = 4, > HDMI_FC_AUDSCHNLS7_ACCURACY_MASK = 0x30, > + HDMI_FC_AUDSCHNLS7_SMPRATE_MASK = 0x0f, > + HDMI_FC_AUDSCHNLS7_SMPRATE_192K = 0xe, > + HDMI_FC_AUDSCHNLS7_SMPRATE_176K4 = 0xc, > + HDMI_FC_AUDSCHNLS7_SMPRATE_96K = 0xa, > + HDMI_FC_AUDSCHNLS7_SMPRATE_768K = 0x9, > + HDMI_FC_AUDSCHNLS7_SMPRATE_88K2 = 0x8, > + HDMI_FC_AUDSCHNLS7_SMPRATE_32K = 0x3, > + HDMI_FC_AUDSCHNLS7_SMPRATE_48K = 0x2, > + HDMI_FC_AUDSCHNLS7_SMPRATE_44K1 = 0x0, > > /* HDMI_FC_AUDSCHNLS8 field values */ > HDMI_FC_AUDSCHNLS8_ORIGSAMPFREQ_MASK = 0xf0, > _______________________________________________ Alsa-devel mailing list Alsa-devel@alsa-project.org https://mailman.alsa-project.org/mailman/listinfo/alsa-devel 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=-8.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=unavailable 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 19BAFC41514 for ; 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Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <20190903055103.134764-1-cychiang@chromium.org> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190903_025337_759428_9FF7C060 X-CRM114-Status: GOOD ( 20.81 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: alsa-devel@alsa-project.org, tzungbi@chromium.org, zhengxing@rock-chips.com, kuninori.morimoto.gx@renesas.com, linux-rockchip@lists.infradead.org, airlied@linux.ie, sam@ravnborg.org, jeffy.chen@rock-chips.com, dianders@chromium.org, dri-devel@lists.freedesktop.org, cain.cai@rock-chips.com, a.hajda@samsung.com, eddie.cai@rock-chips.com, Laurent.pinchart@ideasonboard.com, daniel@ffwll.ch, Yakir Yang , enric.balletbo@collabora.com, dgreid@chromium.org, kuankuan.y@gmail.com, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi, On 03/09/2019 07:51, Cheng-Yi Chiang wrote: > From: Yakir Yang > > When transmitting IEC60985 linear PCM audio, we configure the > Audio Sample Channel Status information of all the channel > status bits in the IEC60958 frame. > Refer to 60958-3 page 10 for frequency, original frequency, and > wordlength setting. > > This fix the issue that audio does not come out on some monitors > (e.g. LG 22CV241) > > Signed-off-by: Yakir Yang > Signed-off-by: Cheng-Yi Chiang > --- > drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 59 +++++++++++++++++++++++ > drivers/gpu/drm/bridge/synopsys/dw-hdmi.h | 20 ++++++++ > 2 files changed, 79 insertions(+) > > diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c > index bd65d0479683..34d46e25d610 100644 > --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c > +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c > @@ -582,6 +582,63 @@ static unsigned int hdmi_compute_n(unsigned int freq, unsigned long pixel_clk) > return n; > } > > +static void hdmi_set_schnl(struct dw_hdmi *hdmi) > +{ > + u8 aud_schnl_samplerate; > + u8 aud_schnl_8; > + > + /* These registers are on RK3288 using version 2.0a. */ > + if (hdmi->version != 0x200a) > + return; Are these limited to the 2.0a version *in* RK3288, or 2.0a version on all SoCs ? > + > + switch (hdmi->sample_rate) { > + case 32000: > + aud_schnl_samplerate = HDMI_FC_AUDSCHNLS7_SMPRATE_32K; > + break; > + case 44100: > + aud_schnl_samplerate = HDMI_FC_AUDSCHNLS7_SMPRATE_44K1; > + break; > + case 48000: > + aud_schnl_samplerate = HDMI_FC_AUDSCHNLS7_SMPRATE_48K; > + break; > + case 88200: > + aud_schnl_samplerate = HDMI_FC_AUDSCHNLS7_SMPRATE_88K2; > + break; > + case 96000: > + aud_schnl_samplerate = HDMI_FC_AUDSCHNLS7_SMPRATE_96K; > + break; > + case 176400: > + aud_schnl_samplerate = HDMI_FC_AUDSCHNLS7_SMPRATE_176K4; > + break; > + case 192000: > + aud_schnl_samplerate = HDMI_FC_AUDSCHNLS7_SMPRATE_192K; > + break; > + case 768000: > + aud_schnl_samplerate = HDMI_FC_AUDSCHNLS7_SMPRATE_768K; > + break; > + default: > + dev_warn(hdmi->dev, "Unsupported audio sample rate (%u)\n", > + hdmi->sample_rate); > + return; > + } > + > + /* set channel status register */ > + hdmi_modb(hdmi, aud_schnl_samplerate, HDMI_FC_AUDSCHNLS7_SMPRATE_MASK, > + HDMI_FC_AUDSCHNLS7); > + > + /* > + * Set original frequency to be the same as frequency. > + * Use one-complement value as stated in IEC60958-3 page 13. > + */ > + aud_schnl_8 = (~aud_schnl_samplerate) << > + HDMI_FC_AUDSCHNLS8_ORIGSAMPFREQ_OFFSET; > + > + /* This means word length is 16 bit. Refer to IEC60958-3 page 12. */ > + aud_schnl_8 |= 2 << HDMI_FC_AUDSCHNLS8_WORDLEGNTH_OFFSET; > + > + hdmi_writeb(hdmi, aud_schnl_8, HDMI_FC_AUDSCHNLS8); > +} > + > static void hdmi_set_clk_regenerator(struct dw_hdmi *hdmi, > unsigned long pixel_clk, unsigned int sample_rate) > { > @@ -620,6 +677,8 @@ static void hdmi_set_clk_regenerator(struct dw_hdmi *hdmi, > hdmi->audio_cts = cts; > hdmi_set_cts_n(hdmi, cts, hdmi->audio_enable ? n : 0); > spin_unlock_irq(&hdmi->audio_lock); > + > + hdmi_set_schnl(hdmi); > } > > static void hdmi_init_clk_regenerator(struct dw_hdmi *hdmi) > diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h > index 6988f12d89d9..619ebc1c8354 100644 > --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h > +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.h > @@ -158,6 +158,17 @@ > #define HDMI_FC_SPDDEVICEINF 0x1062 > #define HDMI_FC_AUDSCONF 0x1063 > #define HDMI_FC_AUDSSTAT 0x1064 > +#define HDMI_FC_AUDSV 0x1065 > +#define HDMI_FC_AUDSU 0x1066 > +#define HDMI_FC_AUDSCHNLS0 0x1067 > +#define HDMI_FC_AUDSCHNLS1 0x1068 > +#define HDMI_FC_AUDSCHNLS2 0x1069 > +#define HDMI_FC_AUDSCHNLS3 0x106a > +#define HDMI_FC_AUDSCHNLS4 0x106b > +#define HDMI_FC_AUDSCHNLS5 0x106c > +#define HDMI_FC_AUDSCHNLS6 0x106d > +#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 > @@ -706,6 +717,15 @@ enum { > /* HDMI_FC_AUDSCHNLS7 field values */ > HDMI_FC_AUDSCHNLS7_ACCURACY_OFFSET = 4, > HDMI_FC_AUDSCHNLS7_ACCURACY_MASK = 0x30, > + HDMI_FC_AUDSCHNLS7_SMPRATE_MASK = 0x0f, > + HDMI_FC_AUDSCHNLS7_SMPRATE_192K = 0xe, > + HDMI_FC_AUDSCHNLS7_SMPRATE_176K4 = 0xc, > + HDMI_FC_AUDSCHNLS7_SMPRATE_96K = 0xa, > + HDMI_FC_AUDSCHNLS7_SMPRATE_768K = 0x9, > + HDMI_FC_AUDSCHNLS7_SMPRATE_88K2 = 0x8, > + HDMI_FC_AUDSCHNLS7_SMPRATE_32K = 0x3, > + HDMI_FC_AUDSCHNLS7_SMPRATE_48K = 0x2, > + HDMI_FC_AUDSCHNLS7_SMPRATE_44K1 = 0x0, > > /* HDMI_FC_AUDSCHNLS8 field values */ > HDMI_FC_AUDSCHNLS8_ORIGSAMPFREQ_MASK = 0xf0, > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel