From patchwork Sat May 9 10:26:57 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Russell King X-Patchwork-Id: 6369301 Return-Path: X-Original-To: patchwork-alsa-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id A9B0C9F32E for ; Sat, 9 May 2015 10:34:29 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id AB1AE202FF for ; Sat, 9 May 2015 10:34:28 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.kernel.org (Postfix) with ESMTP id 5AA02201F5 for ; Sat, 9 May 2015 10:34:27 +0000 (UTC) Received: by alsa0.perex.cz (Postfix, from userid 1000) id 71DF126609E; Sat, 9 May 2015 12:34:26 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-1.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, T_DKIM_INVALID,UNPARSEABLE_RELAY autolearn=no version=3.3.1 Received: from alsa0.perex.cz (localhost [IPv6:::1]) by alsa0.perex.cz (Postfix) with ESMTP id 80204261295; Sat, 9 May 2015 12:33:37 +0200 (CEST) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa0.perex.cz (Postfix, from userid 1000) id E8B8526064F; Sat, 9 May 2015 12:33:34 +0200 (CEST) Received: from pandora.arm.linux.org.uk (pandora.arm.linux.org.uk [78.32.30.218]) by alsa0.perex.cz (Postfix) with ESMTP id C26DF2612BD for ; Sat, 9 May 2015 12:31:50 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=arm.linux.org.uk; s=pandora-2014; h=Date:Sender:Message-Id:Content-Type:Content-Transfer-Encoding:MIME-Version:Subject:Cc:To:From:References:In-Reply-To; bh=dYt2uwCbI5GxuxzNAmHuPSLzO4mnRYlmKV64jo28BkQ=; b=nsbLN+MLdCJnYeiCnsSTsK+AnV//W8HLg+OhSZUYxtQ92xN3EccOsuX2OIXhBN5yzdFc7twuC1fCaYrC0IW5bL55sjqokQO9iyu4LwLClJR6LyWdGmz2qyu+v/Tyls+qS7m711WCCT2PVEXwzD5tmrYnoJvarRlb4wi9jlhSK+o=; Received: from e0022681537dd.dyn.arm.linux.org.uk ([2002:4e20:1eda:1:222:68ff:fe15:37dd]:37380 helo=rmk-PC.arm.linux.org.uk) by pandora.arm.linux.org.uk with esmtpsa (TLSv1:AES128-SHA:128) (Exim 4.82_1-5b7a7c0-XX) (envelope-from ) id 1Yr1yQ-000514-NG; Sat, 09 May 2015 11:27:11 +0100 Received: from rmk by rmk-PC.arm.linux.org.uk with local (Exim 4.76) (envelope-from ) id 1Yr1yD-0006lK-RC; Sat, 09 May 2015 11:26:57 +0100 In-Reply-To: <20150509102501.GO2067@n2100.arm.linux.org.uk> References: <20150509102501.GO2067@n2100.arm.linux.org.uk> From: Russell King To: alsa-devel@alsa-project.org, dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Content-Disposition: inline Message-Id: Date: Sat, 09 May 2015 11:26:57 +0100 Cc: Fabio Estevam , David Airlie , Takashi Iwai , Mark Brown , Philipp Zabel , Yakir Yang Subject: [alsa-devel] [PATCH 13/13] drm: bridge/dw_hdmi-ahb-audio: parse ELD from HDMI driver X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.14 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: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org X-Virus-Scanned: ClamAV using ClamSMTP Parse the ELD (EDID like data) stored from the HDMI driver to restrict the sample rates and channels which are available to ALSA. This causes the ALSA device to reflect the capabilities of the overall audio path, not just what is supported at the HDMI source interface level. Signed-off-by: Russell King --- drivers/gpu/drm/bridge/Kconfig | 1 + drivers/gpu/drm/bridge/dw_hdmi-ahb-audio.c | 6 ++++++ drivers/gpu/drm/bridge/dw_hdmi-ahb-audio.h | 1 + drivers/gpu/drm/bridge/dw_hdmi.c | 3 +++ 4 files changed, 11 insertions(+) diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig index 56ed35fe0734..204861bfb867 100644 --- a/drivers/gpu/drm/bridge/Kconfig +++ b/drivers/gpu/drm/bridge/Kconfig @@ -7,6 +7,7 @@ config DRM_DW_HDMI_AHB_AUDIO tristate "Synopsis Designware AHB Audio interface" depends on DRM_DW_HDMI && SND select SND_PCM + select SND_PCM_ELD select SND_PCM_IEC958 help Support the AHB Audio interface which is part of the Synopsis diff --git a/drivers/gpu/drm/bridge/dw_hdmi-ahb-audio.c b/drivers/gpu/drm/bridge/dw_hdmi-ahb-audio.c index e98c291268f4..2bb68bda3cb0 100644 --- a/drivers/gpu/drm/bridge/dw_hdmi-ahb-audio.c +++ b/drivers/gpu/drm/bridge/dw_hdmi-ahb-audio.c @@ -12,11 +12,13 @@ #include #include #include +#include #include #include #include #include +#include #include #include "dw_hdmi-ahb-audio.h" @@ -284,6 +286,10 @@ static int dw_hdmi_open(struct snd_pcm_substream *substream) runtime->hw = dw_hdmi_hw; + ret = snd_pcm_hw_constraint_eld(runtime, dw->data.eld); + if (ret < 0) + return ret; + ret = snd_pcm_limit_hw_rates(runtime); if (ret < 0) return ret; diff --git a/drivers/gpu/drm/bridge/dw_hdmi-ahb-audio.h b/drivers/gpu/drm/bridge/dw_hdmi-ahb-audio.h index 1e840118d90a..91f631beecc7 100644 --- a/drivers/gpu/drm/bridge/dw_hdmi-ahb-audio.h +++ b/drivers/gpu/drm/bridge/dw_hdmi-ahb-audio.h @@ -8,6 +8,7 @@ struct dw_hdmi_audio_data { void __iomem *base; int irq; struct dw_hdmi *hdmi; + u8 *eld; }; #endif diff --git a/drivers/gpu/drm/bridge/dw_hdmi.c b/drivers/gpu/drm/bridge/dw_hdmi.c index 1cb427935ed2..dc0aed18019d 100644 --- a/drivers/gpu/drm/bridge/dw_hdmi.c +++ b/drivers/gpu/drm/bridge/dw_hdmi.c @@ -1446,6 +1446,8 @@ static int dw_hdmi_connector_get_modes(struct drm_connector *connector) drm_mode_connector_update_edid_property(connector, edid); ret = drm_add_edid_modes(connector, edid); + /* Store the ELD */ + drm_edid_to_eld(connector, edid); kfree(edid); } else { dev_dbg(hdmi->dev, "failed to get edid\n"); @@ -1725,6 +1727,7 @@ int dw_hdmi_bind(struct device *dev, struct device *master, audio.base = hdmi->regs; audio.irq = irq; audio.hdmi = hdmi; + audio.eld = hdmi->connector.eld; pdevinfo.name = "dw-hdmi-ahb-audio"; pdevinfo.data = &audio;