From patchwork Tue Mar 7 16:42:24 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Neil Armstrong X-Patchwork-Id: 9609393 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id E8D7F6046A for ; Tue, 7 Mar 2017 16:42:50 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D494E1FF8F for ; Tue, 7 Mar 2017 16:42:50 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C942827D9B; Tue, 7 Mar 2017 16:42:50 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.1 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_MED,T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 54B151FF8F for ; Tue, 7 Mar 2017 16:42:50 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2338A6E76A; Tue, 7 Mar 2017 16:42:43 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-wm0-x233.google.com (mail-wm0-x233.google.com [IPv6:2a00:1450:400c:c09::233]) by gabe.freedesktop.org (Postfix) with ESMTPS id B02156E767 for ; Tue, 7 Mar 2017 16:42:40 +0000 (UTC) Received: by mail-wm0-x233.google.com with SMTP id v186so94515453wmd.0 for ; Tue, 07 Mar 2017 08:42:40 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=hjjxRL1ZF8fWRAAM68zktm0FRZPGnCfFzhm8rr8bBMY=; b=CKp0vxAQ2ObcMywfd/TzebFMLWxNdXL9VIibsVhCo2vuztg5hmgSowaG4LjxGf+pof WwP7d9Iw8Fb3fgGQLOLYKC01R2ce26O0US6lAoHRbUHt5/L6cYcdzkHPJb9DM859IwIX pitBulyLZfVlSu5HCrHzPtFzKQPeS0bMs0LKp0uoeolOsYXeuSwPu06ZxR3a2ogR8dex vVwkTUZJXm1EXWJZysLN/ZjtpTr3T7HxP3snONZrc661wvgX342CjQK4Vqiv/6nh9dbY +UcP89PHCW5n/0VH0vJ87Gz4ZNC9Dv3C4b9f4e3jyjlcC9cK0XxWcfEaanF70JwDnE2v ULPw== 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:in-reply-to :references; bh=hjjxRL1ZF8fWRAAM68zktm0FRZPGnCfFzhm8rr8bBMY=; b=s6X5eJF/H7IXBHbJe5BE+ze9BL/SXezsVVP/ywrxyjaNq5fUqkeVGbtjPOjLr0CtqT NaAWjczYWu4UZDGCUmZsNEERQzfFNlApH3RwvWoiSiXfa/yJbrL7KVyX2WB7AGLiIXbM /One01LiJGEYsADzxPJAMUR1K54DcQ5xscKqpNkeUTl6HbrF4RksTjC8212YUHZfaNv2 Y3QKxE1cmsAC3/xhL7HY8ul5qihwfvjonp1eFqj/fRrQANcW0x88zurRWgq2b9XxqQlc WUXIlIepT/SseexuJs/bRzmi2/DBeOwftf6sL5NSxv8zigeo0sW8d9ZSk2DX3agdqZ9L Zvag== X-Gm-Message-State: AMke39kW0P3idv+uArq07Yxx9cb1Ry4w6Jr+tJZFTljf1nnphTYklSljU2MkevEFUHJV6dQe X-Received: by 10.28.166.208 with SMTP id p199mr1681795wme.25.1488904959072; Tue, 07 Mar 2017 08:42:39 -0800 (PST) Received: from localhost.localdomain ([90.63.244.31]) by smtp.gmail.com with ESMTPSA id c58sm678325wrc.9.2017.03.07.08.42.38 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 07 Mar 2017 08:42:38 -0800 (PST) From: Neil Armstrong To: dri-devel@lists.freedesktop.org, laurent.pinchart+renesas@ideasonboard.com, architt@codeaurora.org Subject: [PATCH v3 6/6] drm: bridge: dw-hdmi: Move HPD handling to PHY operations Date: Tue, 7 Mar 2017 17:42:24 +0100 Message-Id: <1488904944-14285-7-git-send-email-narmstrong@baylibre.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1488904944-14285-1-git-send-email-narmstrong@baylibre.com> References: <1488904944-14285-1-git-send-email-narmstrong@baylibre.com> Cc: Jose.Abreu@synopsys.com, linux-doc@vger.kernel.org, Neil Armstrong , kieran.bingham@ideasonboard.com, linux-kernel@vger.kernel.org, linux-amlogic@lists.infradead.org, linux-media@vger.kernel.org X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP The HDMI TX controller support HPD and RXSENSE signaling from the PHY via it's STAT0 PHY interface, but some vendor PHYs can manage these signals independently from the controller, thus these STAT0 handling should be moved to PHY specific operations and become optional. The existing STAT0 HPD and RXSENSE handling code is refactored into a supplementaty set of default PHY operations that are used automatically when the platform glue doesn't provide its own operations. Signed-off-by: Neil Armstrong Reviewed-by: Jose Abreu --- drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 135 ++++++++++++++++++------------ include/drm/bridge/dw_hdmi.h | 5 ++ 2 files changed, 86 insertions(+), 54 deletions(-) diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c index 348311c..1c6cb46 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c @@ -1215,10 +1215,46 @@ static enum drm_connector_status dw_hdmi_phy_read_hpd(struct dw_hdmi *hdmi, connector_status_connected : connector_status_disconnected; } +static void dw_hdmi_phy_update_hpd(struct dw_hdmi *hdmi, void *data, + bool force, bool disabled, bool rxsense) +{ + u8 old_mask = hdmi->phy_mask; + + if (force || disabled || !rxsense) + hdmi->phy_mask |= HDMI_PHY_RX_SENSE; + else + hdmi->phy_mask &= ~HDMI_PHY_RX_SENSE; + + if (old_mask != hdmi->phy_mask) + hdmi_writeb(hdmi, hdmi->phy_mask, HDMI_PHY_MASK0); +} + +static void dw_hdmi_phy_setup_hpd(struct dw_hdmi *hdmi, void *data) +{ + /* + * Configure the PHY RX SENSE and HPD interrupts polarities and clear + * any pending interrupt. + */ + hdmi_writeb(hdmi, HDMI_PHY_HPD | HDMI_PHY_RX_SENSE, HDMI_PHY_POL0); + hdmi_writeb(hdmi, HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE, + HDMI_IH_PHY_STAT0); + + /* Enable cable hot plug irq. */ + hdmi_writeb(hdmi, hdmi->phy_mask, HDMI_PHY_MASK0); + + /* Clear and unmute interrupts. */ + hdmi_writeb(hdmi, HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE, + HDMI_IH_PHY_STAT0); + hdmi_writeb(hdmi, ~(HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE), + HDMI_IH_MUTE_PHY_STAT0); +} + static const struct dw_hdmi_phy_ops dw_hdmi_synopsys_phy_ops = { .init = dw_hdmi_phy_init, .disable = dw_hdmi_phy_disable, .read_hpd = dw_hdmi_phy_read_hpd, + .update_hpd = dw_hdmi_phy_update_hpd, + .setup_hpd = dw_hdmi_phy_setup_hpd, }; /* ----------------------------------------------------------------------------- @@ -1742,35 +1778,10 @@ static void dw_hdmi_update_power(struct dw_hdmi *hdmi) */ static void dw_hdmi_update_phy_mask(struct dw_hdmi *hdmi) { - u8 old_mask = hdmi->phy_mask; - - if (hdmi->force || hdmi->disabled || !hdmi->rxsense) - hdmi->phy_mask |= HDMI_PHY_RX_SENSE; - else - hdmi->phy_mask &= ~HDMI_PHY_RX_SENSE; - - if (old_mask != hdmi->phy_mask) - hdmi_writeb(hdmi, hdmi->phy_mask, HDMI_PHY_MASK0); -} - -static void dw_hdmi_phy_setup_hpd(struct dw_hdmi *hdmi) -{ - /* - * Configure the PHY RX SENSE and HPD interrupts polarities and clear - * any pending interrupt. - */ - hdmi_writeb(hdmi, HDMI_PHY_HPD | HDMI_PHY_RX_SENSE, HDMI_PHY_POL0); - hdmi_writeb(hdmi, HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE, - HDMI_IH_PHY_STAT0); - - /* Enable cable hot plug irq. */ - hdmi_writeb(hdmi, hdmi->phy_mask, HDMI_PHY_MASK0); - - /* Clear and unmute interrupts. */ - hdmi_writeb(hdmi, HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE, - HDMI_IH_PHY_STAT0); - hdmi_writeb(hdmi, ~(HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE), - HDMI_IH_MUTE_PHY_STAT0); + if (hdmi->phy.ops->update_hpd) + hdmi->phy.ops->update_hpd(hdmi, hdmi->phy.data, + hdmi->force, hdmi->disabled, + hdmi->rxsense); } static enum drm_connector_status @@ -1962,6 +1973,41 @@ static irqreturn_t dw_hdmi_hardirq(int irq, void *dev_id) return ret; } +void __dw_hdmi_setup_rx_sense(struct dw_hdmi *hdmi, bool hpd, bool rx_sense) +{ + mutex_lock(&hdmi->mutex); + + if (!hdmi->disabled && !hdmi->force) { + /* + * If the RX sense status indicates we're disconnected, + * clear the software rxsense status. + */ + if (!rx_sense) + hdmi->rxsense = false; + + /* + * Only set the software rxsense status when both + * rxsense and hpd indicates we're connected. + * This avoids what seems to be bad behaviour in + * at least iMX6S versions of the phy. + */ + if (hpd) + hdmi->rxsense = true; + + dw_hdmi_update_power(hdmi); + dw_hdmi_update_phy_mask(hdmi); + } + mutex_unlock(&hdmi->mutex); +} + +void dw_hdmi_setup_rx_sense(struct device *dev, bool hpd, bool rx_sense) +{ + struct dw_hdmi *hdmi = dev_get_drvdata(dev); + + __dw_hdmi_setup_rx_sense(hdmi, hpd, rx_sense); +} +EXPORT_SYMBOL_GPL(dw_hdmi_setup_rx_sense); + static irqreturn_t dw_hdmi_irq(int irq, void *dev_id) { struct dw_hdmi *hdmi = dev_id; @@ -1994,30 +2040,10 @@ static irqreturn_t dw_hdmi_irq(int irq, void *dev_id) * ask the source to re-read the EDID. */ if (intr_stat & - (HDMI_IH_PHY_STAT0_RX_SENSE | HDMI_IH_PHY_STAT0_HPD)) { - mutex_lock(&hdmi->mutex); - if (!hdmi->disabled && !hdmi->force) { - /* - * If the RX sense status indicates we're disconnected, - * clear the software rxsense status. - */ - if (!(phy_stat & HDMI_PHY_RX_SENSE)) - hdmi->rxsense = false; - - /* - * Only set the software rxsense status when both - * rxsense and hpd indicates we're connected. - * This avoids what seems to be bad behaviour in - * at least iMX6S versions of the phy. - */ - if (phy_stat & HDMI_PHY_HPD) - hdmi->rxsense = true; - - dw_hdmi_update_power(hdmi); - dw_hdmi_update_phy_mask(hdmi); - } - mutex_unlock(&hdmi->mutex); - } + (HDMI_IH_PHY_STAT0_RX_SENSE | HDMI_IH_PHY_STAT0_HPD)) + __dw_hdmi_setup_rx_sense(hdmi, + phy_stat & HDMI_PHY_HPD, + phy_stat & HDMI_PHY_RX_SENSE); if (intr_stat & HDMI_IH_PHY_STAT0_HPD) { dev_dbg(hdmi->dev, "EVENT=%s\n", @@ -2291,7 +2317,8 @@ static int dw_hdmi_detect_phy(struct dw_hdmi *hdmi) #endif dw_hdmi_fb_registered(hdmi); - dw_hdmi_phy_setup_hpd(hdmi); + if (hdmi->phy.ops->setup_hpd) + hdmi->phy.ops->setup_hpd(hdmi, hdmi->phy.data); memset(&pdevinfo, 0, sizeof(pdevinfo)); pdevinfo.parent = dev; diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h index c3b8da9..e332b8e 100644 --- a/include/drm/bridge/dw_hdmi.h +++ b/include/drm/bridge/dw_hdmi.h @@ -117,6 +117,9 @@ struct dw_hdmi_phy_ops { struct drm_display_mode *mode); void (*disable)(struct dw_hdmi *hdmi, void *data); enum drm_connector_status (*read_hpd)(struct dw_hdmi *hdmi, void *data); + void (*update_hpd)(struct dw_hdmi *hdmi, void *data, + bool force, bool disabled, bool rxsense); + void (*setup_hpd)(struct dw_hdmi *hdmi, void *data); }; struct dw_hdmi_plat_data { @@ -147,6 +150,8 @@ int dw_hdmi_probe(struct platform_device *pdev, int dw_hdmi_bind(struct platform_device *pdev, struct drm_encoder *encoder, const struct dw_hdmi_plat_data *plat_data); +void dw_hdmi_setup_rx_sense(struct device *dev, bool hpd, bool rx_sense); + void dw_hdmi_set_sample_rate(struct dw_hdmi *hdmi, unsigned int rate); void dw_hdmi_audio_enable(struct dw_hdmi *hdmi); void dw_hdmi_audio_disable(struct dw_hdmi *hdmi);