diff options
Diffstat (limited to 'drivers/gpu/drm/tegra/hdmi.c')
| -rw-r--r-- | drivers/gpu/drm/tegra/hdmi.c | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/drivers/gpu/drm/tegra/hdmi.c b/drivers/gpu/drm/tegra/hdmi.c index 47c55974756d..50269ffbcb6b 100644 --- a/drivers/gpu/drm/tegra/hdmi.c +++ b/drivers/gpu/drm/tegra/hdmi.c @@ -1,17 +1,16 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2012 Avionic Design GmbH * Copyright (C) 2012 NVIDIA CORPORATION. All rights reserved. - * - * 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. */ #include <linux/clk.h> #include <linux/debugfs.h> +#include <linux/delay.h> #include <linux/gpio.h> #include <linux/hdmi.h> #include <linux/math64.h> +#include <linux/module.h> #include <linux/of_device.h> #include <linux/pm_runtime.h> #include <linux/regulator/consumer.h> @@ -19,6 +18,9 @@ #include <drm/drm_atomic_helper.h> #include <drm/drm_crtc.h> +#include <drm/drm_debugfs.h> +#include <drm/drm_file.h> +#include <drm/drm_fourcc.h> #include <drm/drm_probe_helper.h> #include "hda.h" @@ -1260,9 +1262,15 @@ static void tegra_hdmi_encoder_enable(struct drm_encoder *encoder) hdmi->dvi = !tegra_output_is_hdmi(output); if (!hdmi->dvi) { - err = tegra_hdmi_setup_audio(hdmi); - if (err < 0) - hdmi->dvi = true; + /* + * Make sure that the audio format has been configured before + * enabling audio, otherwise we may try to divide by zero. + */ + if (hdmi->format.sample_rate > 0) { + err = tegra_hdmi_setup_audio(hdmi); + if (err < 0) + hdmi->dvi = true; + } } if (hdmi->config->has_hda) |