From patchwork Thu Sep 5 09:43:25 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cheng-yi Chiang X-Patchwork-Id: 11134579 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 672BE13B1 for ; Fri, 6 Sep 2019 07:01:45 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4B5472178F for ; Fri, 6 Sep 2019 07:01:45 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4B5472178F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=chromium.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2EF196E15B; Fri, 6 Sep 2019 07:01:03 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-pf1-x441.google.com (mail-pf1-x441.google.com [IPv6:2607:f8b0:4864:20::441]) by gabe.freedesktop.org (Postfix) with ESMTPS id D5A3789FD1 for ; Thu, 5 Sep 2019 09:43:38 +0000 (UTC) Received: by mail-pf1-x441.google.com with SMTP id h195so1381948pfe.5 for ; Thu, 05 Sep 2019 02:43:38 -0700 (PDT) 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=kgR/rau9PNQnc1XrO3uDHAlTFaU8EKj1qkkgQWKlXHw=; b=FZ5ACMBiSx4YqlAqN6ZgOaRLYo5KkDbn+XrKEbll8IjIfXwhg8N08qkWfn3lpN55Nz e4qHrt5kkS7Kj/f/jbglOhjk7uoZfAVRcSJ2XVGXqYLkqWodP7KaliZ+oGVI+8zwRNP7 6uh/1jMLrKf8z0zsBnfkqKzNu5aG70uqC3FCBFTjM2ATOI5nfei3tn39T5BnAahJzlni dFMB7+lSxbrgi2pnqs9ZCT4Es9qlW1a2C4m/lZyeHbstWVyQkC7VJK8rStA4cx81vBqF POKtPqiI2yvc9LSUN/E49rHgWn4ZZtS55ggETR/6DH8O1tVAF2vzv8Xw50bQCTNqm0tE YjtA== X-Gm-Message-State: APjAAAUbKL7BofPJDRn1dhRaAMrq1CuzU5y/s8fsWnSd5iTDxis229T7 12pTSi3evGm0CNtiJhvCGWhchg== X-Google-Smtp-Source: APXvYqz5IR9c5mog/LVvbNwuhK3G189Z8ZJSF7jvcWe5pUpOsa/a8rFtsJumvVxpIkOAWikyOWiQZA== X-Received: by 2002:a17:90a:f48f:: with SMTP id bx15mr2937994pjb.113.1567676618357; Thu, 05 Sep 2019 02:43:38 -0700 (PDT) Received: from localhost ([2401:fa00:1:10:79b4:bd83:e4a5:a720]) by smtp.gmail.com with ESMTPSA id c17sm311633pfo.57.2019.09.05.02.43.33 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 05 Sep 2019 02:43:37 -0700 (PDT) From: Cheng-Yi Chiang To: linux-kernel@vger.kernel.org Subject: [PATCH v2] drm: bridge/dw_hdmi: add audio sample channel status setting Date: Thu, 5 Sep 2019 17:43:25 +0800 Message-Id: <20190905094325.33156-1-cychiang@chromium.org> X-Mailer: git-send-email 2.23.0.187.g17f5b7556c-goog MIME-Version: 1.0 X-Mailman-Approved-At: Fri, 06 Sep 2019 07:01:00 +0000 X-Mailman-Original-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=kgR/rau9PNQnc1XrO3uDHAlTFaU8EKj1qkkgQWKlXHw=; b=KwRfK/CvuP30TijZ9J7kOzqGl6l928El2JhHJT+38Q+/hp7rCU7bqZA0U7kMamuslW 5XQj0uFAvI+sovFMq8NA1UuaSpcSDD4IdOarNrpqKb6afjxUK1hfijwXuxdavgyP19Br P9nfVrS72UN6quo3MOCgkFUq/TH3+HH5hyqJs= X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: alsa-devel@alsa-project.org, kuninori.morimoto.gx@renesas.com, airlied@linux.ie, dri-devel@lists.freedesktop.org, cain.cai@rock-chips.com, Laurent.pinchart@ideasonboard.com, Yakir Yang , sam@ravnborg.org, cychiang@chromium.org, zhengxing@rock-chips.com, linux-rockchip@lists.infradead.org, dgreid@chromium.org, tzungbi@chromium.org, jonas@kwiboo.se, jeffy.chen@rock-chips.com, eddie.cai@rock-chips.com, linux-arm-kernel@lists.infradead.org, jernej.skrabec@siol.net, dianders@chromium.org, enric.balletbo@collabora.com, kuankuan.y@gmail.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Yakir Yang When transmitting IEC60985 linear PCM audio, we configure the Aduio 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) 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 Reviewed-by: Jernej Skrabec --- Original patch by Yakir Yang is at https://lore.kernel.org/patchwork/patch/539653/ Change from v1 to v2: 1. Remove the version check because this will only be called by dw-hdmi-i2s-audio, and the registers are available in I2S setup. 2. Set these registers in dw_hdmi_i2s_hw_params. 3. Fix the sample width setting so it can use 16 or 24 bits. .../drm/bridge/synopsys/dw-hdmi-i2s-audio.c | 1 + drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 70 +++++++++++++++++++ drivers/gpu/drm/bridge/synopsys/dw-hdmi.h | 20 ++++++ include/drm/bridge/dw_hdmi.h | 2 + 4 files changed, 93 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..b801a28b0f17 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->sample_width); 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..d1daa369c8ae 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c @@ -582,6 +582,76 @@ 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, + unsigned int sample_width) +{ + u8 aud_schnl_samplerate; + u8 aud_schnl_8; + u8 word_length_bits; + + 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; + + /* + * Refer to IEC60958-3 page 12. We can accept 16 bits or 24 bits. + * Otherwise, set the register to 0t o indicate using default value. + */ + word_length_bits = (sample_width == 16) ? 0x2 : + ((sample_width == 24) ? 0xb : 0); + + aud_schnl_8 |= word_length_bits << HDMI_FC_AUDSCHNLS8_WORDLEGNTH_OFFSET; + + hdmi_writeb(hdmi, aud_schnl_8, 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..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, diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h index cf528c289857..12144d2f80f4 100644 --- a/include/drm/bridge/dw_hdmi.h +++ b/include/drm/bridge/dw_hdmi.h @@ -156,6 +156,8 @@ 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, + unsigned int sample_width); 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);