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drm/tegra: nvdec: Support multiple clocks

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NVDEC on Tegra234 requires multiple clocks. Add support for that.

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Mikko Perttunen
2022-09-20 11:12:01 +03:00
committed by Thierry Reding
parent 97b93b7a4a
commit 95ffcb4c2c
1 changed files with 21 additions and 10 deletions
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31
drivers/gpu/drm/tegra/nvdec.c
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@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2015-2021, NVIDIA Corporation.
* Copyright (c) 2015-2022, NVIDIA Corporation.
*/
#include <linux/clk.h>
@@ -28,6 +28,7 @@ struct nvdec_config {
const char *firmware;
unsigned int version;
bool supports_sid;
bool has_extra_clocks;
};
struct nvdec {
@@ -37,7 +38,8 @@ struct nvdec {
struct tegra_drm_client client;
struct host1x_channel *channel;
struct device *dev;
struct clk *clk;
struct clk_bulk_data clks[3];
unsigned int num_clks;
/* Platform configuration */
const struct nvdec_config *config;
@@ -258,7 +260,7 @@ static __maybe_unused int nvdec_runtime_resume(struct device *dev)
struct nvdec *nvdec = dev_get_drvdata(dev);
int err;
err = clk_prepare_enable(nvdec->clk);
err = clk_bulk_prepare_enable(nvdec->num_clks, nvdec->clks);
if (err < 0)
return err;
@@ -275,7 +277,7 @@ static __maybe_unused int nvdec_runtime_resume(struct device *dev)
return 0;
disable:
clk_disable_unprepare(nvdec->clk);
clk_bulk_disable_unprepare(nvdec->num_clks, nvdec->clks);
return err;
}
@@ -285,7 +287,7 @@ static __maybe_unused int nvdec_runtime_suspend(struct device *dev)
host1x_channel_stop(nvdec->channel);
clk_disable_unprepare(nvdec->clk);
clk_bulk_disable_unprepare(nvdec->num_clks, nvdec->clks);
return 0;
}
@@ -383,13 +385,22 @@ static int nvdec_probe(struct platform_device *pdev)
if (IS_ERR(nvdec->regs))
return PTR_ERR(nvdec->regs);
nvdec->clk = devm_clk_get(dev, NULL);
if (IS_ERR(nvdec->clk)) {
dev_err(&pdev->dev, "failed to get clock\n");
return PTR_ERR(nvdec->clk);
nvdec->clks[0].id = "nvdec";
nvdec->num_clks = 1;
if (nvdec->config->has_extra_clocks) {
nvdec->num_clks = 3;
nvdec->clks[1].id = "fuse";
nvdec->clks[2].id = "tsec_pka";
}
err = clk_set_rate(nvdec->clk, ULONG_MAX);
err = devm_clk_bulk_get(dev, nvdec->num_clks, nvdec->clks);
if (err) {
dev_err(&pdev->dev, "failed to get clock(s)\n");
return err;
}
err = clk_set_rate(nvdec->clks[0].clk, ULONG_MAX);
if (err < 0) {
dev_err(&pdev->dev, "failed to set clock rate\n");
return err;