diff options
| -rw-r--r-- | drivers/gpu/drm/nouveau/Kconfig | 12 | ||||
| -rw-r--r-- | drivers/gpu/drm/nouveau/Makefile | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_drm.c | 53 | ||||
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_drm.h | 8 | ||||
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_platform.c | 182 | ||||
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_platform.h | 49 |
6 files changed, 291 insertions, 16 deletions
diff --git a/drivers/gpu/drm/nouveau/Kconfig b/drivers/gpu/drm/nouveau/Kconfig index 637c29a33127..40afc69a3778 100644 --- a/drivers/gpu/drm/nouveau/Kconfig +++ b/drivers/gpu/drm/nouveau/Kconfig @@ -1,5 +1,5 @@ config DRM_NOUVEAU - tristate "Nouveau (nVidia) cards" + tristate "Nouveau (NVIDIA) cards" depends on DRM && PCI select FW_LOADER select DRM_KMS_HELPER @@ -23,7 +23,15 @@ config DRM_NOUVEAU select THERMAL if ACPI && X86 select ACPI_VIDEO if ACPI && X86 help - Choose this option for open-source nVidia support. + Choose this option for open-source NVIDIA support. + +config NOUVEAU_PLATFORM_DRIVER + tristate "Nouveau (NVIDIA) SoC GPUs" + depends on DRM_NOUVEAU && ARCH_TEGRA + default y + help + Support for Nouveau platform driver, used for SoC GPUs as found + on NVIDIA Tegra K1. config NOUVEAU_DEBUG int "Maximum debug level" diff --git a/drivers/gpu/drm/nouveau/Makefile b/drivers/gpu/drm/nouveau/Makefile index e5c9886cea51..8e74ae72891d 100644 --- a/drivers/gpu/drm/nouveau/Makefile +++ b/drivers/gpu/drm/nouveau/Makefile @@ -354,3 +354,6 @@ nouveau-$(CONFIG_DRM_NOUVEAU_BACKLIGHT) += nouveau_backlight.o nouveau-$(CONFIG_DEBUG_FS) += nouveau_debugfs.o obj-$(CONFIG_DRM_NOUVEAU)+= nouveau.o + +# platform driver +obj-$(CONFIG_NOUVEAU_PLATFORM_DRIVER) += nouveau_platform.o diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.c b/drivers/gpu/drm/nouveau/nouveau_drm.c index 5425ffe3931d..64ec1d34b484 100644 --- a/drivers/gpu/drm/nouveau/nouveau_drm.c +++ b/drivers/gpu/drm/nouveau/nouveau_drm.c @@ -494,10 +494,9 @@ nouveau_drm_unload(struct drm_device *dev) return 0; } -static void -nouveau_drm_remove(struct pci_dev *pdev) +void +nouveau_drm_device_remove(struct drm_device *dev) { - struct drm_device *dev = pci_get_drvdata(pdev); struct nouveau_drm *drm = nouveau_drm(dev); struct nouveau_object *device; @@ -508,6 +507,15 @@ nouveau_drm_remove(struct pci_dev *pdev) nouveau_object_ref(NULL, &device); nouveau_object_debug(); } +EXPORT_SYMBOL(nouveau_drm_device_remove); + +static void +nouveau_drm_remove(struct pci_dev *pdev) +{ + struct drm_device *dev = pci_get_drvdata(pdev); + + nouveau_drm_device_remove(dev); +} static int nouveau_do_suspend(struct drm_device *dev, bool runtime) @@ -1004,24 +1012,41 @@ nouveau_drm_pci_driver = { .driver.pm = &nouveau_pm_ops, }; -int nouveau_drm_platform_probe(struct platform_device *pdev) +struct drm_device * +nouveau_platform_device_create_(struct platform_device *pdev, int size, + void **pobject) { - struct nouveau_device *device; - int ret; + struct drm_device *drm; + int err; - ret = nouveau_device_create(pdev, NOUVEAU_BUS_PLATFORM, + err = nouveau_device_create_(pdev, NOUVEAU_BUS_PLATFORM, nouveau_platform_name(pdev), dev_name(&pdev->dev), nouveau_config, - nouveau_debug, &device); - - ret = drm_platform_init(&driver, pdev); - if (ret) { - nouveau_object_ref(NULL, (struct nouveau_object **)&device); - return ret; + nouveau_debug, size, pobject); + if (err) + return ERR_PTR(err); + + drm = drm_dev_alloc(&driver, &pdev->dev); + if (!drm) { + err = -ENOMEM; + goto err_free; } - return ret; + err = drm_dev_set_unique(drm, "%s", dev_name(&pdev->dev)); + if (err < 0) + goto err_free; + + drm->platformdev = pdev; + platform_set_drvdata(pdev, drm); + + return drm; + +err_free: + nouveau_object_ref(NULL, (struct nouveau_object **)pobject); + + return ERR_PTR(err); } +EXPORT_SYMBOL(nouveau_platform_device_create_); static int __init nouveau_drm_init(void) diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.h b/drivers/gpu/drm/nouveau/nouveau_drm.h index 7efbafaf7c1d..dc342232182d 100644 --- a/drivers/gpu/drm/nouveau/nouveau_drm.h +++ b/drivers/gpu/drm/nouveau/nouveau_drm.h @@ -39,6 +39,7 @@ #include <drm/ttm/ttm_page_alloc.h> struct nouveau_channel; +struct platform_device; #define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT) @@ -157,6 +158,13 @@ nouveau_dev(struct drm_device *dev) int nouveau_pmops_suspend(struct device *); int nouveau_pmops_resume(struct device *); +#define nouveau_platform_device_create(p, u) \ + nouveau_platform_device_create_(p, sizeof(**u), (void **)u) +struct drm_device * +nouveau_platform_device_create_(struct platform_device *pdev, + int size, void **pobject); +void nouveau_drm_device_remove(struct drm_device *dev); + #define NV_FATAL(cli, fmt, args...) nv_fatal((cli), fmt, ##args) #define NV_ERROR(cli, fmt, args...) nv_error((cli), fmt, ##args) #define NV_WARN(cli, fmt, args...) nv_warn((cli), fmt, ##args) diff --git a/drivers/gpu/drm/nouveau/nouveau_platform.c b/drivers/gpu/drm/nouveau/nouveau_platform.c new file mode 100644 index 000000000000..72ab0519abf6 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nouveau_platform.c @@ -0,0 +1,182 @@ +/* + * 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 <linux/clk.h> +#include <linux/io.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/of.h> +#include <linux/reset.h> +#include <linux/regulator/consumer.h> +#include <linux/tegra-powergate.h> + +#include "nouveau_drm.h" +#include "nouveau_platform.h" + +static int nouveau_platform_power_up(struct nouveau_platform_gpu *gpu) +{ + int err; + + err = regulator_enable(gpu->vdd); + if (err) + goto err_power; + + err = clk_prepare_enable(gpu->clk); + if (err) + goto err_clk; + err = clk_prepare_enable(gpu->clk_pwr); + if (err) + goto err_clk_pwr; + clk_set_rate(gpu->clk_pwr, 204000000); + udelay(10); + + reset_control_assert(gpu->rst); + udelay(10); + + err = tegra_powergate_remove_clamping(TEGRA_POWERGATE_3D); + if (err) + goto err_clamp; + udelay(10); + + reset_control_deassert(gpu->rst); + udelay(10); + + return 0; + +err_clamp: + clk_disable_unprepare(gpu->clk_pwr); +err_clk_pwr: + clk_disable_unprepare(gpu->clk); +err_clk: + regulator_disable(gpu->vdd); +err_power: + return err; +} + +static int nouveau_platform_power_down(struct nouveau_platform_gpu *gpu) +{ + int err; + + reset_control_assert(gpu->rst); + udelay(10); + + clk_disable_unprepare(gpu->clk_pwr); + clk_disable_unprepare(gpu->clk); + udelay(10); + + err = regulator_disable(gpu->vdd); + if (err) + return err; + + return 0; +} + +static int nouveau_platform_probe(struct platform_device *pdev) +{ + struct nouveau_platform_gpu *gpu; + struct nouveau_platform_device *device; + struct drm_device *drm; + int err; + + gpu = devm_kzalloc(&pdev->dev, sizeof(*gpu), GFP_KERNEL); + if (!gpu) + return -ENOMEM; + + gpu->vdd = devm_regulator_get(&pdev->dev, "vdd"); + if (IS_ERR(gpu->vdd)) + return PTR_ERR(gpu->vdd); + + gpu->rst = devm_reset_control_get(&pdev->dev, "gpu"); + if (IS_ERR(gpu->rst)) + return PTR_ERR(gpu->rst); + + gpu->clk = devm_clk_get(&pdev->dev, "gpu"); + if (IS_ERR(gpu->clk)) + return PTR_ERR(gpu->clk); + + gpu->clk_pwr = devm_clk_get(&pdev->dev, "pwr"); + if (IS_ERR(gpu->clk_pwr)) + return PTR_ERR(gpu->clk_pwr); + + err = nouveau_platform_power_up(gpu); + if (err) + return err; + + drm = nouveau_platform_device_create(pdev, &device); + if (IS_ERR(drm)) { + err = PTR_ERR(drm); + goto power_down; + } + + device->gpu = gpu; + + err = drm_dev_register(drm, 0); + if (err < 0) + goto err_unref; + + return 0; + +err_unref: + drm_dev_unref(drm); + + return 0; + +power_down: + nouveau_platform_power_down(gpu); + + return err; +} + +static int nouveau_platform_remove(struct platform_device *pdev) +{ + struct drm_device *drm_dev = platform_get_drvdata(pdev); + struct nouveau_device *device = nouveau_dev(drm_dev); + struct nouveau_platform_gpu *gpu = nv_device_to_platform(device)->gpu; + + nouveau_drm_device_remove(drm_dev); + + return nouveau_platform_power_down(gpu); +} + +#if IS_ENABLED(CONFIG_OF) +static const struct of_device_id nouveau_platform_match[] = { + { .compatible = "nvidia,gk20a" }, + { } +}; + +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, +}; + +module_platform_driver(nouveau_platform_driver); + +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL and additional rights"); diff --git a/drivers/gpu/drm/nouveau/nouveau_platform.h b/drivers/gpu/drm/nouveau/nouveau_platform.h new file mode 100644 index 000000000000..91f66504900e --- /dev/null +++ b/drivers/gpu/drm/nouveau/nouveau_platform.h @@ -0,0 +1,49 @@ +/* + * 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. + */ + +#ifndef __NOUVEAU_PLATFORM_H__ +#define __NOUVEAU_PLATFORM_H__ + +#include "core/device.h" + +struct reset_control; +struct clk; +struct regulator; + +struct nouveau_platform_gpu { + struct reset_control *rst; + struct clk *clk; + struct clk *clk_pwr; + + struct regulator *vdd; +}; + +struct nouveau_platform_device { + struct nouveau_device device; + + struct nouveau_platform_gpu *gpu; +}; + +#define nv_device_to_platform(d) \ + container_of(d, struct nouveau_platform_device, device) + +#endif |