diff options
Diffstat (limited to 'drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c')
| -rw-r--r-- | drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c | 53 |
1 files changed, 40 insertions, 13 deletions
diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c index 97179bec8902..fec6ef1ae3b9 100644 --- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c +++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c @@ -1,21 +1,11 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2014, The Linux Foundation. All rights reserved. * Copyright (C) 2013 Red Hat * Author: Rob Clark <robdclark@gmail.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published by - * the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program. If not, see <http://www.gnu.org/licenses/>. */ +#include <linux/interconnect.h> #include <linux/of_irq.h> #include "msm_drv.h" @@ -750,7 +740,7 @@ struct msm_kms *mdp5_kms_init(struct drm_device *dev) dev->driver->get_vblank_timestamp = drm_calc_vbltimestamp_from_scanoutpos; dev->driver->get_scanout_position = mdp5_get_scanoutpos; dev->driver->get_vblank_counter = mdp5_get_vblank_counter; - dev->max_vblank_count = 0xffffffff; + dev->max_vblank_count = 0; /* max_vblank_count is set on each CRTC */ dev->vblank_disable_immediate = true; return kms; @@ -1048,9 +1038,46 @@ static const struct component_ops mdp5_ops = { .unbind = mdp5_unbind, }; +static int mdp5_setup_interconnect(struct platform_device *pdev) +{ + struct icc_path *path0 = of_icc_get(&pdev->dev, "mdp0-mem"); + struct icc_path *path1 = of_icc_get(&pdev->dev, "mdp1-mem"); + struct icc_path *path_rot = of_icc_get(&pdev->dev, "rotator-mem"); + + if (IS_ERR(path0)) + return PTR_ERR(path0); + + if (!path0) { + /* no interconnect support is not necessarily a fatal + * condition, the platform may simply not have an + * interconnect driver yet. But warn about it in case + * bootloader didn't setup bus clocks high enough for + * scanout. + */ + dev_warn(&pdev->dev, "No interconnect support may cause display underflows!\n"); + return 0; + } + + icc_set_bw(path0, 0, MBps_to_icc(6400)); + + if (!IS_ERR_OR_NULL(path1)) + icc_set_bw(path1, 0, MBps_to_icc(6400)); + if (!IS_ERR_OR_NULL(path_rot)) + icc_set_bw(path_rot, 0, MBps_to_icc(6400)); + + return 0; +} + static int mdp5_dev_probe(struct platform_device *pdev) { + int ret; + DBG(""); + + ret = mdp5_setup_interconnect(pdev); + if (ret) + return ret; + return component_add(&pdev->dev, &mdp5_ops); } |