From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751932AbbCLSra (ORCPT ); Thu, 12 Mar 2015 14:47:30 -0400 Received: from mx-guillaumet.finsecur.com ([91.217.234.131]:36333 "EHLO guillaumet.finsecur.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751295AbbCLSr3 (ORCPT ); Thu, 12 Mar 2015 14:47:29 -0400 From: Sylvain Rochet To: Boris Brezillon , David Airlie , dri-devel@lists.freedesktop.org, Nicolas Ferre , Jean-Christophe Plagniol-Villard , Alexandre Belloni , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Daniel Vetter , Kevin Hilman , Wenyou Yang , Andrzej Hajda Cc: Sylvain Rochet Date: Thu, 12 Mar 2015 19:47:19 +0100 Message-Id: <1426186039-29646-1-git-send-email-sylvain.rochet@finsecur.com> X-Mailer: git-send-email 2.1.4 X-SA-Exim-Connect-IP: 172.16.8.13 X-SA-Exim-Mail-From: sylvain.rochet@finsecur.com Subject: [PATCH] drm: atmel-hlcdc: fixes wrong enabled flag used in PM suspend/resume support X-SA-Exim-Version: 4.2.1 (built Mon, 26 Dec 2011 16:24:06 +0000) X-SA-Exim-Scanned: Yes (on guillaumet.finsecur.com) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Unfortunately we used the enabled flag in struct drm_crtc instead of the enabled flag in struct atmel_hlcdc_crtc. This obviously leads to discrepancies on crtc enable state. This patch fixes the issue by using the struct atmel_hlcdc_crtc enabled flag in PM support. Signed-off-by: Sylvain Rochet --- We had to move CRTC suspend and resume support from DC to CRTC because drm_crtc_to_atmel_hlcdc_crtc() is static, this is also cleaner this way. drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c | 21 +++++++++++++++++++++ drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c | 19 ++++--------------- drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h | 3 +++ 3 files changed, 28 insertions(+), 15 deletions(-) diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c index d55c0c2..8ba98df 100644 --- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c @@ -207,6 +207,27 @@ static void atmel_hlcdc_crtc_enable(struct drm_crtc *c) crtc->enabled = true; } +void atmel_hlcdc_crtc_suspend(struct drm_crtc *crtc) +{ + struct atmel_hlcdc_crtc *atmel_crtc = drm_crtc_to_atmel_hlcdc_crtc(crtc); + + if (atmel_crtc->enabled) { + atmel_hlcdc_crtc_disable(crtc); + /* save enable state for resume */ + atmel_crtc->enabled = true; + } +} + +void atmel_hlcdc_crtc_resume(struct drm_crtc *crtc) +{ + struct atmel_hlcdc_crtc *atmel_crtc = drm_crtc_to_atmel_hlcdc_crtc(crtc); + + if (atmel_crtc->enabled) { + atmel_crtc->enabled = false; + atmel_hlcdc_crtc_enable(crtc); + } +} + static int atmel_hlcdc_crtc_atomic_check(struct drm_crtc *c, struct drm_crtc_state *s) { diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c index c4bb1f9..60b0c13 100644 --- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c @@ -569,14 +569,8 @@ static int atmel_hlcdc_dc_drm_suspend(struct device *dev) return 0; drm_modeset_lock_all(drm_dev); - list_for_each_entry(crtc, &drm_dev->mode_config.crtc_list, head) { - struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; - if (crtc->enabled) { - crtc_funcs->disable(crtc); - /* save enable state for resume */ - crtc->enabled = true; - } - } + list_for_each_entry(crtc, &drm_dev->mode_config.crtc_list, head) + atmel_hlcdc_crtc_suspend(crtc); drm_modeset_unlock_all(drm_dev); return 0; } @@ -590,13 +584,8 @@ static int atmel_hlcdc_dc_drm_resume(struct device *dev) return 0; drm_modeset_lock_all(drm_dev); - list_for_each_entry(crtc, &drm_dev->mode_config.crtc_list, head) { - struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; - if (crtc->enabled) { - crtc->enabled = false; - crtc_funcs->enable(crtc); - } - } + list_for_each_entry(crtc, &drm_dev->mode_config.crtc_list, head) + atmel_hlcdc_crtc_resume(crtc); drm_modeset_unlock_all(drm_dev); return 0; } diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h index 1ea9c2c..cf6b375 100644 --- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h @@ -155,6 +155,9 @@ void atmel_hlcdc_crtc_irq(struct drm_crtc *c); void atmel_hlcdc_crtc_cancel_page_flip(struct drm_crtc *crtc, struct drm_file *file); +void atmel_hlcdc_crtc_suspend(struct drm_crtc *crtc); +void atmel_hlcdc_crtc_resume(struct drm_crtc *crtc); + int atmel_hlcdc_crtc_create(struct drm_device *dev); int atmel_hlcdc_create_outputs(struct drm_device *dev); -- 2.1.4