diff options
Diffstat (limited to 'drivers/gpu/drm/tegra/sor.c')
| -rw-r--r-- | drivers/gpu/drm/tegra/sor.c | 26 |
1 files changed, 21 insertions, 5 deletions
diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c index 40057106f5f3..4ffe3794e6d3 100644 --- a/drivers/gpu/drm/tegra/sor.c +++ b/drivers/gpu/drm/tegra/sor.c @@ -1,9 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2013 NVIDIA Corporation - * - * 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> @@ -2871,6 +2868,13 @@ static int tegra_sor_init(struct host1x_client *client) * kernel is possible. */ if (sor->rst) { + err = reset_control_acquire(sor->rst); + if (err < 0) { + dev_err(sor->dev, "failed to acquire SOR reset: %d\n", + err); + return err; + } + err = reset_control_assert(sor->rst); if (err < 0) { dev_err(sor->dev, "failed to assert SOR reset: %d\n", @@ -2894,6 +2898,8 @@ static int tegra_sor_init(struct host1x_client *client) err); return err; } + + reset_control_release(sor->rst); } err = clk_prepare_enable(sor->clk_safe); @@ -3331,7 +3337,7 @@ static int tegra_sor_probe(struct platform_device *pdev) goto remove; } - sor->rst = devm_reset_control_get(&pdev->dev, "sor"); + sor->rst = devm_reset_control_get_exclusive_released(&pdev->dev, "sor"); if (IS_ERR(sor->rst)) { err = PTR_ERR(sor->rst); @@ -3519,6 +3525,8 @@ static int tegra_sor_suspend(struct device *dev) dev_err(dev, "failed to assert reset: %d\n", err); return err; } + + reset_control_release(sor->rst); } usleep_range(1000, 2000); @@ -3542,9 +3550,17 @@ static int tegra_sor_resume(struct device *dev) usleep_range(1000, 2000); if (sor->rst) { + err = reset_control_acquire(sor->rst); + if (err < 0) { + dev_err(dev, "failed to acquire reset: %d\n", err); + clk_disable_unprepare(sor->clk); + return err; + } + err = reset_control_deassert(sor->rst); if (err < 0) { dev_err(dev, "failed to deassert reset: %d\n", err); + reset_control_release(sor->rst); clk_disable_unprepare(sor->clk); return err; } |