diff options
Diffstat (limited to 'drivers/amba/tegra-ahb.c')
| -rw-r--r-- | drivers/amba/tegra-ahb.c | 32 |
1 files changed, 6 insertions, 26 deletions
diff --git a/drivers/amba/tegra-ahb.c b/drivers/amba/tegra-ahb.c index b0b688c481e8..f23c3ed01810 100644 --- a/drivers/amba/tegra-ahb.c +++ b/drivers/amba/tegra-ahb.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved. * Copyright (C) 2011 Google, Inc. @@ -8,16 +9,6 @@ * Benoit Goby <benoit@android.com> * Colin Cross <ccross@android.com> * Hiroshi DOYU <hdoyu@nvidia.com> - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * 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. - * */ #include <linux/err.h> @@ -129,7 +120,7 @@ static const u32 tegra_ahb_gizmo[] = { struct tegra_ahb { void __iomem *regs; struct device *dev; - u32 ctx[0]; + u32 ctx[]; }; static inline u32 gizmo_readl(struct tegra_ahb *ahb, u32 offset) @@ -143,25 +134,17 @@ static inline void gizmo_writel(struct tegra_ahb *ahb, u32 value, u32 offset) } #ifdef CONFIG_TEGRA_IOMMU_SMMU -static int tegra_ahb_match_by_smmu(struct device *dev, void *data) -{ - struct tegra_ahb *ahb = dev_get_drvdata(dev); - struct device_node *dn = data; - - return (ahb->dev->of_node == dn) ? 1 : 0; -} - int tegra_ahb_enable_smmu(struct device_node *dn) { struct device *dev; u32 val; struct tegra_ahb *ahb; - dev = driver_find_device(&tegra_ahb_driver.driver, NULL, dn, - tegra_ahb_match_by_smmu); + dev = driver_find_device_by_of_node(&tegra_ahb_driver.driver, dn); if (!dev) return -EPROBE_DEFER; ahb = dev_get_drvdata(dev); + put_device(dev); val = gizmo_readl(ahb, AHB_ARBITRATION_XBAR_CTRL); val |= AHB_ARBITRATION_XBAR_CTRL_SMMU_INIT_DONE; gizmo_writel(ahb, val, AHB_ARBITRATION_XBAR_CTRL); @@ -170,8 +153,7 @@ int tegra_ahb_enable_smmu(struct device_node *dn) EXPORT_SYMBOL(tegra_ahb_enable_smmu); #endif -#ifdef CONFIG_PM -static int tegra_ahb_suspend(struct device *dev) +static int __maybe_unused tegra_ahb_suspend(struct device *dev) { int i; struct tegra_ahb *ahb = dev_get_drvdata(dev); @@ -181,7 +163,7 @@ static int tegra_ahb_suspend(struct device *dev) return 0; } -static int tegra_ahb_resume(struct device *dev) +static int __maybe_unused tegra_ahb_resume(struct device *dev) { int i; struct tegra_ahb *ahb = dev_get_drvdata(dev); @@ -190,7 +172,6 @@ static int tegra_ahb_resume(struct device *dev) gizmo_writel(ahb, ahb->ctx[i], tegra_ahb_gizmo[i]); return 0; } -#endif static UNIVERSAL_DEV_PM_OPS(tegra_ahb_pm, tegra_ahb_suspend, @@ -305,5 +286,4 @@ module_platform_driver(tegra_ahb_driver); MODULE_AUTHOR("Hiroshi DOYU <hdoyu@nvidia.com>"); MODULE_DESCRIPTION("Tegra AHB driver"); -MODULE_LICENSE("GPL v2"); MODULE_ALIAS("platform:" DRV_NAME); |