config DRM_NOUVEAU
- tristate "Nouveau (nVidia) cards"
+ tristate "Nouveau (NVIDIA) cards"
depends on DRM && PCI
select FW_LOADER
select DRM_KMS_HELPER
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"
nouveau-$(CONFIG_DEBUG_FS) += nouveau_debugfs.o
obj-$(CONFIG_DRM_NOUVEAU)+= nouveau.o
+
+# platform driver
+obj-$(CONFIG_NOUVEAU_PLATFORM_DRIVER) += nouveau_platform.o
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;
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)
.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)
#include <drm/ttm/ttm_page_alloc.h>
struct nouveau_channel;
+struct platform_device;
#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
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)
--- /dev/null
+/*
+ * 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");
--- /dev/null
+/*
+ * 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
projects / openwrt / staging / blogic.git / commitdiff