From patchwork Sat Dec 14 05:50:01 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Horman X-Patchwork-Id: 3344971 Return-Path: X-Original-To: patchwork-ltsi-dev@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 7EF3B9F243 for ; Sat, 14 Dec 2013 05:55:33 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 881E020546 for ; Sat, 14 Dec 2013 05:55:32 +0000 (UTC) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) by mail.kernel.org (Postfix) with ESMTP id 99CB220171 for ; Sat, 14 Dec 2013 05:55:31 +0000 (UTC) Received: from mail.linux-foundation.org (localhost [IPv6:::1]) by mail.linuxfoundation.org (Postfix) with ESMTP id 0D1988D5; Sat, 14 Dec 2013 05:55:29 +0000 (UTC) X-Original-To: ltsi-dev@lists.linuxfoundation.org Delivered-To: ltsi-dev@mail.linuxfoundation.org Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTP id 9918F8D5 for ; Sat, 14 Dec 2013 05:55:28 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from kirsty.vergenet.net (kirsty.vergenet.net [202.4.237.240]) by smtp1.linuxfoundation.org (Postfix) with ESMTP id C9ADE1F889 for ; Sat, 14 Dec 2013 05:55:27 +0000 (UTC) Received: from penelope.isobedori.kobe.vergenet.net (g1-27-253-251-111.bmobile.ne.jp [27.253.251.111]) by kirsty.vergenet.net (Postfix) with ESMTP id 710DE26716E; Sat, 14 Dec 2013 16:55:22 +1100 (EST) Received: by penelope.isobedori.kobe.vergenet.net (Postfix, from userid 7100) id AEAA17C031B; Sat, 14 Dec 2013 14:53:55 +0900 (JST) From: Simon Horman To: ltsi-dev@lists.linuxfoundation.org Date: Sat, 14 Dec 2013 14:50:01 +0900 Message-Id: <1387000406-29111-33-git-send-email-horms+renesas@verge.net.au> X-Mailer: git-send-email 1.8.4 In-Reply-To: <1387000406-29111-1-git-send-email-horms+renesas@verge.net.au> References: <1387000406-29111-1-git-send-email-horms+renesas@verge.net.au> X-Spam-Status: No, score=-2.3 required=5.0 tests=BAYES_00,RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org Cc: Magnus Damm Subject: [LTSI-dev] [PATCH 032/237] drm/rcar-du: Configure RGB output routing to DPAD0 X-BeenThere: ltsi-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: "A list to discuss patches, development, and other things related to the LTSI project" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: ltsi-dev-bounces@lists.linuxfoundation.org Errors-To: ltsi-dev-bounces@lists.linuxfoundation.org X-Virus-Scanned: ClamAV using ClamSMTP From: Laurent Pinchart The R8A7790 DU variant has a single RGB output called DPAD0 that can be fed with the output of DU0, DU1 or DU2. Making the routing configurable. Signed-off-by: Laurent Pinchart (cherry picked from commit 7cbc05cb518304b746bea00bc7c0b005217bcaf7) Signed-off-by: Simon Horman --- drivers/gpu/drm/rcar-du/rcar_du_crtc.c | 5 ++++ drivers/gpu/drm/rcar-du/rcar_du_drv.h | 2 ++ drivers/gpu/drm/rcar-du/rcar_du_group.c | 45 ++++++++++++++++++++++++++++++--- drivers/gpu/drm/rcar-du/rcar_du_group.h | 2 +- 4 files changed, 50 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c index 680606e..245800d 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c @@ -139,6 +139,11 @@ void rcar_du_crtc_route_output(struct drm_crtc *crtc, * configured when starting the CRTC. */ rcrtc->outputs |= BIT(output); + + /* Store RGB routing to DPAD0 for R8A7790. */ + if (rcar_du_has(rcdu, RCAR_DU_FEATURE_DEFR8) && + output == RCAR_DU_OUTPUT_DPAD0) + rcdu->dpad0_source = rcrtc->index; } void rcar_du_crtc_update_planes(struct drm_crtc *crtc) diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.h b/drivers/gpu/drm/rcar-du/rcar_du_drv.h index d5243f4..924f5e0 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_drv.h +++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.h @@ -68,6 +68,8 @@ struct rcar_du_device { unsigned int num_crtcs; struct rcar_du_group groups[2]; + + unsigned int dpad0_source; }; static inline bool rcar_du_has(struct rcar_du_device *rcdu, diff --git a/drivers/gpu/drm/rcar-du/rcar_du_group.c b/drivers/gpu/drm/rcar-du/rcar_du_group.c index 9df6fb6..eb53cd9 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_group.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_group.c @@ -27,6 +27,7 @@ * counterpart in the DU documentation, that models those semi-global resources. */ +#include #include #include "rcar_du_drv.h" @@ -43,6 +44,22 @@ void rcar_du_group_write(struct rcar_du_group *rgrp, u32 reg, u32 data) rcar_du_write(rgrp->dev, rgrp->mmio_offset + reg, data); } +static void rcar_du_group_setup_defr8(struct rcar_du_group *rgrp) +{ + u32 defr8 = DEFR8_CODE | DEFR8_DEFE8; + + if (!rcar_du_has(rgrp->dev, RCAR_DU_FEATURE_DEFR8)) + return; + + /* The DEFR8 register for the first group also controls RGB output + * routing to DPAD0 + */ + if (rgrp->index == 0) + defr8 |= DEFR8_DRGBS_DU(rgrp->dev->dpad0_source); + + rcar_du_group_write(rgrp, DEFR8, defr8); +} + static void rcar_du_group_setup(struct rcar_du_group *rgrp) { /* Enable extended features */ @@ -51,8 +68,8 @@ static void rcar_du_group_setup(struct rcar_du_group *rgrp) rcar_du_group_write(rgrp, DEFR3, DEFR3_CODE | DEFR3_DEFE3); rcar_du_group_write(rgrp, DEFR4, DEFR4_CODE); rcar_du_group_write(rgrp, DEFR5, DEFR5_CODE | DEFR5_DEFE5); - if (rcar_du_has(rgrp->dev, RCAR_DU_FEATURE_DEFR8)) - rcar_du_group_write(rgrp, DEFR8, DEFR8_CODE | DEFR8_DEFE8); + + rcar_du_group_setup_defr8(rgrp); /* Use DS1PR and DS2PR to configure planes priorities and connects the * superposition 0 to DU0 pins. DU1 pins will be configured dynamically. @@ -128,7 +145,27 @@ void rcar_du_group_restart(struct rcar_du_group *rgrp) __rcar_du_group_start_stop(rgrp, true); } -void rcar_du_group_set_routing(struct rcar_du_group *rgrp) +static int rcar_du_set_dpad0_routing(struct rcar_du_device *rcdu) +{ + int ret; + + /* RGB output routing to DPAD0 is configured in the DEFR8 register of + * the first group. As this function can be called with the DU0 and DU1 + * CRTCs disabled, we need to enable the first group clock before + * accessing the register. + */ + ret = clk_prepare_enable(rcdu->crtcs[0].clock); + if (ret < 0) + return ret; + + rcar_du_group_setup_defr8(&rcdu->groups[0]); + + clk_disable_unprepare(rcdu->crtcs[0].clock); + + return 0; +} + +int rcar_du_group_set_routing(struct rcar_du_group *rgrp) { struct rcar_du_crtc *crtc0 = &rgrp->dev->crtcs[rgrp->index * 2]; u32 dorcr = rcar_du_group_read(rgrp, DORCR); @@ -145,4 +182,6 @@ void rcar_du_group_set_routing(struct rcar_du_group *rgrp) dorcr |= DORCR_PG2T | DORCR_DK2S | DORCR_PG2D_DS2; rcar_du_group_write(rgrp, DORCR, dorcr); + + return rcar_du_set_dpad0_routing(rgrp->dev); } diff --git a/drivers/gpu/drm/rcar-du/rcar_du_group.h b/drivers/gpu/drm/rcar-du/rcar_du_group.h index 4487e83..5025930 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_group.h +++ b/drivers/gpu/drm/rcar-du/rcar_du_group.h @@ -45,6 +45,6 @@ int rcar_du_group_get(struct rcar_du_group *rgrp); void rcar_du_group_put(struct rcar_du_group *rgrp); void rcar_du_group_start_stop(struct rcar_du_group *rgrp, bool start); void rcar_du_group_restart(struct rcar_du_group *rgrp); -void rcar_du_group_set_routing(struct rcar_du_group *rgrp); +int rcar_du_group_set_routing(struct rcar_du_group *rgrp); #endif /* __RCAR_DU_GROUP_H__ */