From patchwork Thu Apr 2 09:21:51 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Russell King X-Patchwork-Id: 6145741 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 D34959F1BE for ; Thu, 2 Apr 2015 09:26:24 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 0F31020373 for ; Thu, 2 Apr 2015 09:26:24 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.kernel.org (Postfix) with ESMTP id DBCD420270 for ; Thu, 2 Apr 2015 09:26:22 +0000 (UTC) Received: by alsa0.perex.cz (Postfix, from userid 1000) id E751F265516; Thu, 2 Apr 2015 11:26:21 +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 5A341265821; Thu, 2 Apr 2015 11:23:44 +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 0FD7F26582A; Thu, 2 Apr 2015 11:23:43 +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 8201426562C for ; Thu, 2 Apr 2015 11:22:01 +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=nkuA5frA3agRSld8DAYHUEffvqILuKwCD8hKFeg3IRg=; b=PBDsg137i8iZ2gGPdm/sFSHT/VZ+VHPobyLa8tT6tzu/J2Nk7fTapvxFT8QDpbzRdyh/TOcNLx7V+2IdxqXM56PcsAiqlPDFpiKwr1y8X3+vKNGwoj7NFza+jnU4zcFGPjtoOkt4EqrrFTy4ElUPMiqQP1v0HWB5ceSxWTAf+Zk=; Received: from e0022681537dd.dyn.arm.linux.org.uk ([2002:4e20:1eda:1:222:68ff:fe15:37dd]:37485 helo=rmk-PC.arm.linux.org.uk) by pandora.arm.linux.org.uk with esmtpsa (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.82_1-5b7a7c0-XX) (envelope-from ) id 1YdbK0-0007OG-Fw; Thu, 02 Apr 2015 10:21:56 +0100 Received: from rmk by rmk-PC.arm.linux.org.uk with local (Exim 4.76) (envelope-from ) id 1YdbJv-00085A-82; Thu, 02 Apr 2015 10:21:51 +0100 In-Reply-To: <20150402092050.GH24899@n2100.arm.linux.org.uk> References: <20150402092050.GH24899@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: Thu, 02 Apr 2015 10:21:51 +0100 Cc: Fabio Estevam , David Airlie , Mark Brown , Philipp Zabel , Yakir Yang Subject: [alsa-devel] [PATCH RFC v2 07/13] drm: bridge/dw_hdmi: introduce interface to setting sample rate 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 Introduce dw_hdmi_set_sample_rate(), which allows us to configure the audio sample rate, setting the CTS/N values appropriately. Signed-off-by: Russell King --- drivers/gpu/drm/bridge/dw_hdmi.c | 10 ++++++++++ include/drm/bridge/dw_hdmi.h | 5 +++++ 2 files changed, 15 insertions(+) diff --git a/drivers/gpu/drm/bridge/dw_hdmi.c b/drivers/gpu/drm/bridge/dw_hdmi.c index 75728ba552d0..0369fab5c695 100644 --- a/drivers/gpu/drm/bridge/dw_hdmi.c +++ b/drivers/gpu/drm/bridge/dw_hdmi.c @@ -366,6 +366,16 @@ static void hdmi_clk_regenerator_update_pixel_clock(struct dw_hdmi *hdmi) mutex_unlock(&hdmi->audio_mutex); } +void dw_hdmi_set_sample_rate(struct dw_hdmi *hdmi, unsigned int rate) +{ + mutex_lock(&hdmi->audio_mutex); + hdmi->sample_rate = rate; + hdmi_set_clk_regenerator(hdmi, hdmi->hdmi_data.video_mode.mpixelclock, + hdmi->sample_rate, hdmi->ratio); + mutex_unlock(&hdmi->audio_mutex); +} +EXPORT_SYMBOL_GPL(dw_hdmi_set_sample_rate); + /* * this submodule is responsible for the video data synchronization. * for example, for RGB 4:4:4 input, the data map is defined as diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h index de13bfc35634..763af51e1d60 100644 --- a/include/drm/bridge/dw_hdmi.h +++ b/include/drm/bridge/dw_hdmi.h @@ -12,6 +12,8 @@ #include +struct dw_hdmi; + enum { DW_HDMI_RES_8, DW_HDMI_RES_10, @@ -59,4 +61,7 @@ int dw_hdmi_bind(struct device *dev, struct device *master, void *data, struct drm_encoder *encoder, struct resource *iores, int irq, const struct dw_hdmi_plat_data *plat_data); + +void dw_hdmi_set_sample_rate(struct dw_hdmi *hdmi, unsigned int rate); + #endif /* __IMX_HDMI_H__ */