From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.kernel.org ([198.145.29.99]:43048 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1164019AbeE1KyI (ORCPT ); Mon, 28 May 2018 06:54:08 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Ben Skeggs , Karol Herbst , Ben Skeggs , Sasha Levin Subject: [PATCH 4.14 252/496] drm/nouveau/bl: fix backlight regression Date: Mon, 28 May 2018 12:00:37 +0200 Message-Id: <20180528100330.510973807@linuxfoundation.org> In-Reply-To: <20180528100319.498712256@linuxfoundation.org> References: <20180528100319.498712256@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org List-ID: 4.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Karol Herbst [ Upstream commit 9e75dc61eaa9acd1bff83c3b814ac2af6dc1f64c ] Fixes: 3c66c87dc9 ("drm/nouveau/disp: remove hw-specific customisation of output paths") Suggested-by: Ben Skeggs Signed-off-by: Karol Herbst Signed-off-by: Ben Skeggs Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/nouveau/nouveau_backlight.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) --- a/drivers/gpu/drm/nouveau/nouveau_backlight.c +++ b/drivers/gpu/drm/nouveau/nouveau_backlight.c @@ -134,7 +134,7 @@ nv50_get_intensity(struct backlight_devi struct nouveau_encoder *nv_encoder = bl_get_data(bd); struct nouveau_drm *drm = nouveau_drm(nv_encoder->base.base.dev); struct nvif_object *device = &drm->client.device.object; - int or = nv_encoder->or; + int or = ffs(nv_encoder->dcb->or) - 1; u32 div = 1025; u32 val; @@ -149,7 +149,7 @@ nv50_set_intensity(struct backlight_devi struct nouveau_encoder *nv_encoder = bl_get_data(bd); struct nouveau_drm *drm = nouveau_drm(nv_encoder->base.base.dev); struct nvif_object *device = &drm->client.device.object; - int or = nv_encoder->or; + int or = ffs(nv_encoder->dcb->or) - 1; u32 div = 1025; u32 val = (bd->props.brightness * div) / 100; @@ -170,7 +170,7 @@ nva3_get_intensity(struct backlight_devi struct nouveau_encoder *nv_encoder = bl_get_data(bd); struct nouveau_drm *drm = nouveau_drm(nv_encoder->base.base.dev); struct nvif_object *device = &drm->client.device.object; - int or = nv_encoder->or; + int or = ffs(nv_encoder->dcb->or) - 1; u32 div, val; div = nvif_rd32(device, NV50_PDISP_SOR_PWM_DIV(or)); @@ -188,7 +188,7 @@ nva3_set_intensity(struct backlight_devi struct nouveau_encoder *nv_encoder = bl_get_data(bd); struct nouveau_drm *drm = nouveau_drm(nv_encoder->base.base.dev); struct nvif_object *device = &drm->client.device.object; - int or = nv_encoder->or; + int or = ffs(nv_encoder->dcb->or) - 1; u32 div, val; div = nvif_rd32(device, NV50_PDISP_SOR_PWM_DIV(or)); @@ -228,7 +228,7 @@ nv50_backlight_init(struct drm_connector return -ENODEV; } - if (!nvif_rd32(device, NV50_PDISP_SOR_PWM_CTL(nv_encoder->or))) + if (!nvif_rd32(device, NV50_PDISP_SOR_PWM_CTL(ffs(nv_encoder->dcb->or) - 1))) return 0; if (drm->client.device.info.chipset <= 0xa0 ||