linux-stable/drivers/gpu/drm/nouveau/nouveau_platform.c
Alexandre Courbot 34440ed697 drm/nouveau/tegra: acquire and enable reference clock if needed
GM20B requires an extra clock compared to GK20A. Add that information
into the platform data and acquire and enable this clock if necessary.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-04-06 16:06:51 +10:00

96 lines
2.9 KiB
C

/*
* Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "nouveau_platform.h"
static int nouveau_platform_probe(struct platform_device *pdev)
{
const struct nvkm_device_tegra_func *func;
struct nvkm_device *device = NULL;
struct drm_device *drm;
int ret;
func = of_device_get_match_data(&pdev->dev);
drm = nouveau_platform_device_create(func, pdev, &device);
if (IS_ERR(drm))
return PTR_ERR(drm);
ret = drm_dev_register(drm, 0);
if (ret < 0) {
drm_dev_unref(drm);
return ret;
}
return 0;
}
static int nouveau_platform_remove(struct platform_device *pdev)
{
struct drm_device *dev = platform_get_drvdata(pdev);
nouveau_drm_device_remove(dev);
return 0;
}
#if IS_ENABLED(CONFIG_OF)
static const struct nvkm_device_tegra_func gk20a_platform_data = {
.iommu_bit = 34,
};
static const struct nvkm_device_tegra_func gm20b_platform_data = {
.iommu_bit = 34,
.require_ref_clk = true,
};
static const struct of_device_id nouveau_platform_match[] = {
{
.compatible = "nvidia,gk20a",
.data = &gk20a_platform_data,
},
{
.compatible = "nvidia,gm20b",
.data = &gm20b_platform_data,
},
{ }
};
MODULE_DEVICE_TABLE(of, nouveau_platform_match);
#endif
struct platform_driver nouveau_platform_driver = {
.driver = {
.name = "nouveau",
.of_match_table = of_match_ptr(nouveau_platform_match),
},
.probe = nouveau_platform_probe,
.remove = nouveau_platform_remove,
};
#if IS_ENABLED(CONFIG_ARCH_TEGRA_124_SOC) || IS_ENABLED(CONFIG_ARCH_TEGRA_132_SOC)
MODULE_FIRMWARE("nvidia/gk20a/fecs_data.bin");
MODULE_FIRMWARE("nvidia/gk20a/fecs_inst.bin");
MODULE_FIRMWARE("nvidia/gk20a/gpccs_data.bin");
MODULE_FIRMWARE("nvidia/gk20a/gpccs_inst.bin");
MODULE_FIRMWARE("nvidia/gk20a/sw_bundle_init.bin");
MODULE_FIRMWARE("nvidia/gk20a/sw_ctx.bin");
MODULE_FIRMWARE("nvidia/gk20a/sw_method_init.bin");
MODULE_FIRMWARE("nvidia/gk20a/sw_nonctx.bin");
#endif