From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 10330C43381 for ; Thu, 21 Mar 2019 08:16:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D76F4218A5 for ; Thu, 21 Mar 2019 08:16:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727883AbfCUIQE (ORCPT ); Thu, 21 Mar 2019 04:16:04 -0400 Received: from mx07-00178001.pphosted.com ([62.209.51.94]:33376 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725985AbfCUIQD (ORCPT ); Thu, 21 Mar 2019 04:16:03 -0400 Received: from pps.filterd (m0046037.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x2L8BZLE019244; Thu, 21 Mar 2019 09:15:49 +0100 Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 2r8qsxv3uj-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Thu, 21 Mar 2019 09:15:49 +0100 Received: from zeta.dmz-eu.st.com (zeta.dmz-eu.st.com [164.129.230.9]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 57FB338; Thu, 21 Mar 2019 08:15:48 +0000 (GMT) Received: from Webmail-eu.st.com (Safex1hubcas22.st.com [10.75.90.92]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 2CB3524F5; Thu, 21 Mar 2019 08:15:48 +0000 (GMT) Received: from SAFEX1HUBCAS23.st.com (10.75.90.47) by Safex1hubcas22.st.com (10.75.90.92) with Microsoft SMTP Server (TLS) id 14.3.361.1; Thu, 21 Mar 2019 09:15:48 +0100 Received: from localhost (10.201.23.97) by webmail-ga.st.com (10.75.90.48) with Microsoft SMTP Server (TLS) id 14.3.435.0; Thu, 21 Mar 2019 09:15:47 +0100 From: =?UTF-8?q?Yannick=20Fertr=C3=A9?= To: Yannick Fertre , Philippe Cornu , Vincent Abriou , David Airlie , Daniel Vetter , Maxime Coquelin , Alexandre Torgue , , , , Subject: [PATCH] drm/stm: add sleep power management Date: Thu, 21 Mar 2019 09:15:20 +0100 Message-ID: <1553156120-13851-1-git-send-email-yannick.fertre@st.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit X-Originating-IP: [10.201.23.97] X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-03-21_04:,, signatures=0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Implements system sleep power management ops. Signed-off-by: Yannick Fertré --- drivers/gpu/drm/stm/drv.c | 35 +++++++++++++++++++++++++++++++++++ drivers/gpu/drm/stm/ltdc.c | 24 ++++++++++++++++++++++++ drivers/gpu/drm/stm/ltdc.h | 3 +++ 3 files changed, 62 insertions(+) diff --git a/drivers/gpu/drm/stm/drv.c b/drivers/gpu/drm/stm/drv.c index 0a7f933..5834ef5 100644 --- a/drivers/gpu/drm/stm/drv.c +++ b/drivers/gpu/drm/stm/drv.c @@ -129,6 +129,40 @@ static void drv_unload(struct drm_device *ddev) drm_mode_config_cleanup(ddev); } +static __maybe_unused int drv_suspend(struct device *dev) +{ + struct drm_device *ddev = dev_get_drvdata(dev); + struct ltdc_device *ldev = ddev->dev_private; + struct drm_atomic_state *state; + + drm_kms_helper_poll_disable(ddev); + state = drm_atomic_helper_suspend(ddev); + if (IS_ERR(state)) { + drm_kms_helper_poll_enable(ddev); + return PTR_ERR(state); + } + ldev->suspend_state = state; + ltdc_suspend(ddev); + + return 0; +} + +static __maybe_unused int drv_resume(struct device *dev) +{ + struct drm_device *ddev = dev_get_drvdata(dev); + struct ltdc_device *ldev = ddev->dev_private; + + ltdc_resume(ddev); + drm_atomic_helper_resume(ddev, ldev->suspend_state); + drm_kms_helper_poll_enable(ddev); + + return 0; +} + +static const struct dev_pm_ops drv_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(drv_suspend, drv_resume) +}; + static int stm_drm_platform_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -186,6 +220,7 @@ static struct platform_driver stm_drm_platform_driver = { .driver = { .name = "stm32-display", .of_match_table = drv_dt_ids, + .pm = &drv_pm_ops, }, }; diff --git a/drivers/gpu/drm/stm/ltdc.c b/drivers/gpu/drm/stm/ltdc.c index b1741a9..32fd6a3 100644 --- a/drivers/gpu/drm/stm/ltdc.c +++ b/drivers/gpu/drm/stm/ltdc.c @@ -1062,6 +1062,30 @@ static int ltdc_get_caps(struct drm_device *ddev) return 0; } +void ltdc_suspend(struct drm_device *ddev) +{ + struct ltdc_device *ldev = ddev->dev_private; + + DRM_DEBUG_DRIVER("\n"); + clk_disable_unprepare(ldev->pixel_clk); +} + +int ltdc_resume(struct drm_device *ddev) +{ + struct ltdc_device *ldev = ddev->dev_private; + int ret; + + DRM_DEBUG_DRIVER("\n"); + + ret = clk_prepare_enable(ldev->pixel_clk); + if (ret) { + DRM_ERROR("failed to enable pixel clock (%d)\n", ret); + return ret; + } + + return 0; +} + int ltdc_load(struct drm_device *ddev) { struct platform_device *pdev = to_platform_device(ddev->dev); diff --git a/drivers/gpu/drm/stm/ltdc.h b/drivers/gpu/drm/stm/ltdc.h index e46f477..a1ad0ae 100644 --- a/drivers/gpu/drm/stm/ltdc.h +++ b/drivers/gpu/drm/stm/ltdc.h @@ -36,6 +36,7 @@ struct ltdc_device { u32 error_status; u32 irq_status; struct fps_info plane_fpsi[LTDC_MAX_LAYER]; + struct drm_atomic_state *suspend_state; }; bool ltdc_crtc_scanoutpos(struct drm_device *dev, unsigned int pipe, @@ -45,5 +46,7 @@ bool ltdc_crtc_scanoutpos(struct drm_device *dev, unsigned int pipe, int ltdc_load(struct drm_device *ddev); void ltdc_unload(struct drm_device *ddev); +void ltdc_suspend(struct drm_device *ddev); +int ltdc_resume(struct drm_device *ddev); #endif -- 2.7.4 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E8872C10F00 for ; Thu, 21 Mar 2019 08:16:06 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B3367218A5 for ; Thu, 21 Mar 2019 08:16:06 +0000 (UTC) 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Subject: [PATCH] drm/stm: add sleep power management Date: Thu, 21 Mar 2019 09:15:20 +0100 Message-ID: <1553156120-13851-1-git-send-email-yannick.fertre@st.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-Originating-IP: [10.201.23.97] X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-03-21_04:, , signatures=0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190321_011558_865361_89D04198 X-CRM114-Status: GOOD ( 11.22 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org SW1wbGVtZW50cyBzeXN0ZW0gc2xlZXAgcG93ZXIgbWFuYWdlbWVudCBvcHMuCgpTaWduZWQtb2Zm 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X2xvYWQoc3RydWN0IGRybV9kZXZpY2UgKmRkZXYpOwogdm9pZCBsdGRjX3VubG9hZChzdHJ1Y3Qg ZHJtX2RldmljZSAqZGRldik7Cit2b2lkIGx0ZGNfc3VzcGVuZChzdHJ1Y3QgZHJtX2RldmljZSAq ZGRldik7CitpbnQgbHRkY19yZXN1bWUoc3RydWN0IGRybV9kZXZpY2UgKmRkZXYpOwogCiAjZW5k aWYKLS0gCjIuNy40CgoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX18KbGludXgtYXJtLWtlcm5lbCBtYWlsaW5nIGxpc3QKbGludXgtYXJtLWtlcm5lbEBsaXN0 cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGlu Zm8vbGludXgtYXJtLWtlcm5lbAo= From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?q?Yannick=20Fertr=C3=A9?= Subject: [PATCH] drm/stm: add sleep power management Date: Thu, 21 Mar 2019 09:15:20 +0100 Message-ID: <1553156120-13851-1-git-send-email-yannick.fertre@st.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mx07-00178001.pphosted.com (mx07-00178001.pphosted.com [62.209.51.94]) by gabe.freedesktop.org (Postfix) with ESMTPS id CB91D896BF for ; Thu, 21 Mar 2019 08:15:51 +0000 (UTC) List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Yannick Fertre , Philippe Cornu , Vincent Abriou , David Airlie , Daniel Vetter , Maxime Coquelin , Alexandre Torgue , dri-devel@lists.freedesktop.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org List-Id: dri-devel@lists.freedesktop.org SW1wbGVtZW50cyBzeXN0ZW0gc2xlZXAgcG93ZXIgbWFuYWdlbWVudCBvcHMuCgpTaWduZWQtb2Zm LWJ5OiBZYW5uaWNrIEZlcnRyw6kgPHlhbm5pY2suZmVydHJlQHN0LmNvbT4KLS0tCiBkcml2ZXJz L2dwdS9kcm0vc3RtL2Rydi5jICB8IDM1ICsrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysr KysrCiBkcml2ZXJzL2dwdS9kcm0vc3RtL2x0ZGMuYyB8IDI0ICsrKysrKysrKysrKysrKysrKysr KysrKwogZHJpdmVycy9ncHUvZHJtL3N0bS9sdGRjLmggfCAgMyArKysKIDMgZmlsZXMgY2hhbmdl ZCwgNjIgaW5zZXJ0aW9ucygrKQoKZGlmZiAtLWdpdCBhL2RyaXZlcnMvZ3B1L2RybS9zdG0vZHJ2 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