drm/nouveau/tegra: merge platform setup from nouveau drm

The copyright header in nvkm/engine/device/platform.c has been replaced
with the NVIDIA one from drm/nouveau_platform.c, as most of the actual
code is now theirs.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/include/nvif/os.h

@@ -25,10 +25,13 @@
 #include <linux/clk.h>
 #include <linux/regulator/consumer.h>
 #include <linux/agp_backend.h>
+#include <linux/reset.h>
+#include <linux/iommu.h>
 
 #include <asm/unaligned.h>
 
 #include <soc/tegra/fuse.h>
+#include <soc/tegra/pmc.h>
 
 #ifndef ioread32_native
 #ifdef __BIG_ENDIAN

drivers/gpu/drm/nouveau/include/nvkm/core/device.h

@@ -139,8 +139,6 @@ struct nvkm_device {
 	struct nvkm_sw *sw;
 	struct nvkm_engine *vic;
 	struct nvkm_engine *vp;
-
-	struct nouveau_platform_gpu *gpu;
 };
 
 struct nvkm_subdev *nvkm_device_subdev(struct nvkm_device *, int index);

drivers/gpu/drm/nouveau/include/nvkm/core/tegra.h

@@ -1,11 +1,31 @@
 #ifndef __NVKM_DEVICE_TEGRA_H__
 #define __NVKM_DEVICE_TEGRA_H__
 #include <core/device.h>
+#include <core/mm.h>
 
 struct nvkm_device_tegra {
 	struct nvkm_device device;
 	struct platform_device *pdev;
 	int irq;
+
+	struct reset_control *rst;
+	struct clk *clk;
+	struct clk *clk_pwr;
+
+	struct regulator *vdd;
+
+	struct {
+		/*
+		 * Protects accesses to mm from subsystems
+		 */
+		struct mutex mutex;
+
+		struct nvkm_mm mm;
+		struct iommu_domain *domain;
+		unsigned long pgshift;
+	} iommu;
+
+	int gpu_speedo;
 };
 
 int nvkm_device_tegra_new(struct platform_device *,

drivers/gpu/drm/nouveau/nouveau_platform.c

@@ -19,234 +19,32 @@
  * 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/iommu.h>
-#include <soc/tegra/fuse.h>
-#include <soc/tegra/pmc.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;
-}
-
-#if IS_ENABLED(CONFIG_IOMMU_API)
-
-static void nouveau_platform_probe_iommu(struct device *dev,
-					 struct nouveau_platform_gpu *gpu)
-{
-	int err;
-	unsigned long pgsize_bitmap;
-
-	mutex_init(&gpu->iommu.mutex);
-
-	if (iommu_present(&platform_bus_type)) {
-		gpu->iommu.domain = iommu_domain_alloc(&platform_bus_type);
-		if (IS_ERR(gpu->iommu.domain))
-			goto error;
-
-		/*
-		 * A IOMMU is only usable if it supports page sizes smaller
-		 * or equal to the system's PAGE_SIZE, with a preference if
-		 * both are equal.
-		 */
-		pgsize_bitmap = gpu->iommu.domain->ops->pgsize_bitmap;
-		if (pgsize_bitmap & PAGE_SIZE) {
-			gpu->iommu.pgshift = PAGE_SHIFT;
-		} else {
-			gpu->iommu.pgshift = fls(pgsize_bitmap & ~PAGE_MASK);
-			if (gpu->iommu.pgshift == 0) {
-				dev_warn(dev, "unsupported IOMMU page size\n");
-				goto free_domain;
-			}
-			gpu->iommu.pgshift -= 1;
-		}
-
-		err = iommu_attach_device(gpu->iommu.domain, dev);
-		if (err)
-			goto free_domain;
-
-		err = nvkm_mm_init(&gpu->iommu._mm, 0,
-				   (1ULL << 40) >> gpu->iommu.pgshift, 1);
-		if (err)
-			goto detach_device;
-
-		gpu->iommu.mm = &gpu->iommu._mm;
-	}
-
-	return;
-
-detach_device:
-	iommu_detach_device(gpu->iommu.domain, dev);
-
-free_domain:
-	iommu_domain_free(gpu->iommu.domain);
-
-error:
-	gpu->iommu.domain = NULL;
-	gpu->iommu.pgshift = 0;
-	dev_err(dev, "cannot initialize IOMMU MM\n");
-}
-
-static void nouveau_platform_remove_iommu(struct device *dev,
-					  struct nouveau_platform_gpu *gpu)
-{
-	if (gpu->iommu.domain) {
-		nvkm_mm_fini(&gpu->iommu._mm);
-		iommu_detach_device(gpu->iommu.domain, dev);
-		iommu_domain_free(gpu->iommu.domain);
-	}
-}
-
-#else
-
-static void nouveau_platform_probe_iommu(struct device *dev,
-					 struct nouveau_platform_gpu *gpu)
-{
-}
-
-static void nouveau_platform_remove_iommu(struct device *dev,
-					  struct nouveau_platform_gpu *gpu)
-{
-}
-
-#endif
-
 static int nouveau_platform_probe(struct platform_device *pdev)
 {
-	struct nouveau_platform_gpu *gpu;
 	struct nvkm_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);
-
-	nouveau_platform_probe_iommu(&pdev->dev, gpu);
-
-	err = nouveau_platform_power_up(gpu);
-	if (err)
-		return err;
+	int ret;
 
 	drm = nouveau_platform_device_create(pdev, &device);
-	if (IS_ERR(drm)) {
-		err = PTR_ERR(drm);
-		goto power_down;
-	}
+	if (IS_ERR(drm))
+		return PTR_ERR(drm);
 
-	device->gpu = gpu;
-	gpu->gpu_speedo = tegra_sku_info.gpu_speedo_value;
-
-	err = drm_dev_register(drm, 0);
-	if (err < 0)
-		goto err_unref;
+	ret = drm_dev_register(drm, 0);
+	if (ret < 0) {
+		drm_dev_unref(drm);
+		return ret;
+	}
 
 	return 0;
-
-err_unref:
-	drm_dev_unref(drm);
-
-power_down:
-	nouveau_platform_power_down(gpu);
-	nouveau_platform_remove_iommu(&pdev->dev, gpu);
-
-	return err;
 }
 
 static int nouveau_platform_remove(struct platform_device *pdev)
 {
-	struct drm_device *drm_dev = platform_get_drvdata(pdev);
-	struct nouveau_drm *drm = nouveau_drm(drm_dev);
-	struct nvkm_device *device = nvxx_device(&drm->device);
-	struct nouveau_platform_gpu *gpu = device->gpu;
-	int err;
-
-	nouveau_drm_device_remove(drm_dev);
-
-	err = nouveau_platform_power_down(gpu);
-
-	nouveau_platform_remove_iommu(&pdev->dev, gpu);
-
-	return err;
+	struct drm_device *dev = platform_get_drvdata(pdev);
+	nouveau_drm_device_remove(dev);
+	return 0;
 }
 
 #if IS_ENABLED(CONFIG_OF)

drivers/gpu/drm/nouveau/nouveau_platform.h

@@ -19,44 +19,9 @@
  * 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"
-#include "core/mm.h"
-
-struct reset_control;
-struct clk;
-struct regulator;
-struct iommu_domain;
-struct platform_driver;
-
-struct nouveau_platform_gpu {
-	struct reset_control *rst;
-	struct clk *clk;
-	struct clk *clk_pwr;
-
-	struct regulator *vdd;
-
-	struct {
-		/*
-		 * Protects accesses to mm from subsystems
-		 */
-		struct mutex mutex;
-
-		struct nvkm_mm _mm;
-		/*
-		 * Just points to _mm. We need this to avoid embedding
-		 * struct nvkm_mm in os.h
-		 */
-		struct nvkm_mm *mm;
-		struct iommu_domain *domain;
-		unsigned long pgshift;
-	} iommu;
-
-	int gpu_speedo;
-};
+#include "nouveau_drm.h"
 
 extern struct platform_driver nouveau_platform_driver;
 #endif

drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c

@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 Red Hat Inc.
+ * 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"),
@@ -14,17 +14,138 @@
  * 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
- *
- * Authors: Ben Skeggs <bskeggs@redhat.com>
+ * 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 <core/tegra.h>
 #ifdef CONFIG_NOUVEAU_PLATFORM_DRIVER
 #include "priv.h"
 
+static int
+nvkm_device_tegra_power_up(struct nvkm_device_tegra *tdev)
+{
+	int ret;
+
+	ret = regulator_enable(tdev->vdd);
+	if (ret)
+		goto err_power;
+
+	ret = clk_prepare_enable(tdev->clk);
+	if (ret)
+		goto err_clk;
+	ret = clk_prepare_enable(tdev->clk_pwr);
+	if (ret)
+		goto err_clk_pwr;
+	clk_set_rate(tdev->clk_pwr, 204000000);
+	udelay(10);
+
+	reset_control_assert(tdev->rst);
+	udelay(10);
+
+	ret = tegra_powergate_remove_clamping(TEGRA_POWERGATE_3D);
+	if (ret)
+		goto err_clamp;
+	udelay(10);
+
+	reset_control_deassert(tdev->rst);
+	udelay(10);
+
+	return 0;
+
+err_clamp:
+	clk_disable_unprepare(tdev->clk_pwr);
+err_clk_pwr:
+	clk_disable_unprepare(tdev->clk);
+err_clk:
+	regulator_disable(tdev->vdd);
+err_power:
+	return ret;
+}
+
+static int
+nvkm_device_tegra_power_down(struct nvkm_device_tegra *tdev)
+{
+	reset_control_assert(tdev->rst);
+	udelay(10);
+
+	clk_disable_unprepare(tdev->clk_pwr);
+	clk_disable_unprepare(tdev->clk);
+	udelay(10);
+
+	return regulator_disable(tdev->vdd);
+}
+
+static void
+nvkm_device_tegra_probe_iommu(struct nvkm_device_tegra *tdev)
+{
+#if IS_ENABLED(CONFIG_IOMMU_API)
+	struct device *dev = &tdev->pdev->dev;
+	unsigned long pgsize_bitmap;
+	int ret;
+
+	mutex_init(&tdev->iommu.mutex);
+
+	if (iommu_present(&platform_bus_type)) {
+		tdev->iommu.domain = iommu_domain_alloc(&platform_bus_type);
+		if (IS_ERR(tdev->iommu.domain))
+			goto error;
+
+		/*
+		 * A IOMMU is only usable if it supports page sizes smaller
+		 * or equal to the system's PAGE_SIZE, with a preference if
+		 * both are equal.
+		 */
+		pgsize_bitmap = tdev->iommu.domain->ops->pgsize_bitmap;
+		if (pgsize_bitmap & PAGE_SIZE) {
+			tdev->iommu.pgshift = PAGE_SHIFT;
+		} else {
+			tdev->iommu.pgshift = fls(pgsize_bitmap & ~PAGE_MASK);
+			if (tdev->iommu.pgshift == 0) {
+				dev_warn(dev, "unsupported IOMMU page size\n");
+				goto free_domain;
+			}
+			tdev->iommu.pgshift -= 1;
+		}
+
+		ret = iommu_attach_device(tdev->iommu.domain, dev);
+		if (ret)
+			goto free_domain;
+
+		ret = nvkm_mm_init(&tdev->iommu.mm, 0,
+				   (1ULL << 40) >> tdev->iommu.pgshift, 1);
+		if (ret)
+			goto detach_device;
+	}
+
+	return;
+
+detach_device:
+	iommu_detach_device(tdev->iommu.domain, dev);
+
+free_domain:
+	iommu_domain_free(tdev->iommu.domain);
+
+error:
+	tdev->iommu.domain = NULL;
+	tdev->iommu.pgshift = 0;
+	dev_err(dev, "cannot initialize IOMMU MM\n");
+#endif
+}
+
+static void
+nvkm_device_tegra_remove_iommu(struct nvkm_device_tegra *tdev)
+{
+#if IS_ENABLED(CONFIG_IOMMU_API)
+	if (tdev->iommu.domain) {
+		nvkm_mm_fini(&tdev->iommu.mm);
+		iommu_detach_device(tdev->iommu.domain, tdev->device.dev);
+		iommu_domain_free(tdev->iommu.domain);
+	}
+#endif
+}
+
 static struct nvkm_device_tegra *
 nvkm_device_tegra(struct nvkm_device *device)
 {
@@ -95,9 +216,19 @@ nvkm_device_tegra_init(struct nvkm_device *device)
 	return 0;
 }
 
+static void *
+nvkm_device_tegra_dtor(struct nvkm_device *device)
+{
+	struct nvkm_device_tegra *tdev = nvkm_device_tegra(device);
+	nvkm_device_tegra_power_down(tdev);
+	nvkm_device_tegra_remove_iommu(tdev);
+	return tdev;
+}
+
 static const struct nvkm_device_func
 nvkm_device_tegra_func = {
 	.tegra = nvkm_device_tegra,
+	.dtor = nvkm_device_tegra_dtor,
 	.init = nvkm_device_tegra_init,
 	.fini = nvkm_device_tegra_fini,
 	.resource_addr = nvkm_device_tegra_resource_addr,
@@ -112,6 +243,7 @@ nvkm_device_tegra_new(struct platform_device *pdev,
 		      struct nvkm_device **pdevice)
 {
 	struct nvkm_device_tegra *tdev;
+	int ret;
 
 	if (!(tdev = kzalloc(sizeof(*tdev), GFP_KERNEL)))
 		return -ENOMEM;
@@ -119,10 +251,37 @@ nvkm_device_tegra_new(struct platform_device *pdev,
 	tdev->pdev = pdev;
 	tdev->irq = -1;
 
-	return nvkm_device_ctor(&nvkm_device_tegra_func, NULL, &pdev->dev,
-				NVKM_DEVICE_TEGRA, pdev->id, NULL,
-				cfg, dbg, detect, mmio, subdev_mask,
-				&tdev->device);
+	tdev->vdd = devm_regulator_get(&pdev->dev, "vdd");
+	if (IS_ERR(tdev->vdd))
+		return PTR_ERR(tdev->vdd);
+
+	tdev->rst = devm_reset_control_get(&pdev->dev, "gpu");
+	if (IS_ERR(tdev->rst))
+		return PTR_ERR(tdev->rst);
+
+	tdev->clk = devm_clk_get(&pdev->dev, "gpu");
+	if (IS_ERR(tdev->clk))
+		return PTR_ERR(tdev->clk);
+
+	tdev->clk_pwr = devm_clk_get(&pdev->dev, "pwr");
+	if (IS_ERR(tdev->clk_pwr))
+		return PTR_ERR(tdev->clk_pwr);
+
+	nvkm_device_tegra_probe_iommu(tdev);
+
+	ret = nvkm_device_tegra_power_up(tdev);
+	if (ret)
+		return ret;
+
+	tdev->gpu_speedo = tegra_sku_info.gpu_speedo_value;
+	ret = nvkm_device_ctor(&nvkm_device_tegra_func, NULL, &pdev->dev,
+			       NVKM_DEVICE_TEGRA, pdev->id, NULL,
+			       cfg, dbg, detect, mmio, subdev_mask,
+			       &tdev->device);
+	if (ret)
+		return ret;
+
+	return 0;
 }
 #else
 int

drivers/gpu/drm/nouveau/nvkm/subdev/clk/gk20a.c

@@ -25,12 +25,9 @@
 #define gk20a_clk(p) container_of((p), struct gk20a_clk, base)
 #include "priv.h"
 
+#include <core/tegra.h>
 #include <subdev/timer.h>
 
-#ifdef __KERNEL__
-#include <nouveau_platform.h>
-#endif
-
 #define MHZ (1000 * 1000)
 
 #define MASK(w)	((1 << w) - 1)
@@ -649,6 +646,7 @@ gk20a_clk = {
 int
 gk20a_clk_new(struct nvkm_device *device, int index, struct nvkm_clk **pclk)
 {
+	struct nvkm_device_tegra *tdev = device->func->tegra(device);
 	struct gk20a_clk *clk;
 	int ret, i;
 
@@ -663,7 +661,7 @@ gk20a_clk_new(struct nvkm_device *device, int index, struct nvkm_clk **pclk)
 	}
 
 	clk->params = &gk20a_pllg_params;
-	clk->parent_rate = clk_get_rate(device->gpu->clk);
+	clk->parent_rate = clk_get_rate(tdev->clk);
 
 	ret = nvkm_clk_ctor(&gk20a_clk, device, index, true, &clk->base);
 	nvkm_info(&clk->base.subdev, "parent clock rate: %d Mhz\n",

drivers/gpu/drm/nouveau/nvkm/subdev/instmem/gk20a.c

@@ -42,14 +42,9 @@
 
 #include <core/memory.h>
 #include <core/mm.h>
+#include <core/tegra.h>
 #include <subdev/fb.h>
 
-#ifdef __KERNEL__
-#include <linux/dma-attrs.h>
-#include <linux/iommu.h>
-#include <nouveau_platform.h>
-#endif
-
 #define gk20a_instobj(p) container_of((p), struct gk20a_instobj, memory)
 
 struct gk20a_instobj {
@@ -423,8 +418,9 @@ gk20a_instmem = {
 
 int
 gk20a_instmem_new(struct nvkm_device *device, int index,
-		 struct nvkm_instmem **pimem)
+		  struct nvkm_instmem **pimem)
 {
+	struct nvkm_device_tegra *tdev = device->func->tegra(device);
 	struct gk20a_instmem *imem;
 
 	if (!(imem = kzalloc(sizeof(*imem), GFP_KERNEL)))
@@ -433,11 +429,11 @@ gk20a_instmem_new(struct nvkm_device *device, int index,
 	spin_lock_init(&imem->lock);
 	*pimem = &imem->base;
 
-	if (device->gpu->iommu.domain) {
-		imem->domain = device->gpu->iommu.domain;
-		imem->mm = device->gpu->iommu.mm;
-		imem->iommu_pgshift = device->gpu->iommu.pgshift;
-		imem->mm_mutex = &device->gpu->iommu.mutex;
+	if (tdev->iommu.domain) {
+		imem->domain = tdev->iommu.domain;
+		imem->mm = &tdev->iommu.mm;
+		imem->iommu_pgshift = tdev->iommu.pgshift;
+		imem->mm_mutex = &tdev->iommu.mutex;
 
 		nvkm_info(&imem->base.subdev, "using IOMMU\n");
 	} else {

drivers/gpu/drm/nouveau/nvkm/subdev/volt/gk20a.c

@@ -22,9 +22,7 @@
 #define gk20a_volt(p) container_of((p), struct gk20a_volt, base)
 #include "priv.h"
 
-#ifdef __KERNEL__
-#include <nouveau_platform.h>
-#endif
+#include <core/tegra.h>
 
 struct cvb_coef {
 	int c0;
@@ -159,6 +157,7 @@ gk20a_volt = {
 int
 gk20a_volt_new(struct nvkm_device *device, int index, struct nvkm_volt **pvolt)
 {
+	struct nvkm_device_tegra *tdev = device->func->tegra(device);
 	struct gk20a_volt *volt;
 	int i, uv;
 
@@ -168,10 +167,10 @@ gk20a_volt_new(struct nvkm_device *device, int index, struct nvkm_volt **pvolt)
 	nvkm_volt_ctor(&gk20a_volt, device, index, &volt->base);
 	*pvolt = &volt->base;
 
-	uv = regulator_get_voltage(device->gpu->vdd);
+	uv = regulator_get_voltage(tdev->vdd);
 	nvkm_info(&volt->base.subdev, "The default voltage is %duV\n", uv);
 
-	volt->vdd = device->gpu->vdd;
+	volt->vdd = tdev->vdd;
 
 	volt->base.vid_nr = ARRAY_SIZE(gk20a_cvb_coef);
 	nvkm_debug(&volt->base.subdev, "%s - vid_nr = %d\n", __func__,
@@ -180,7 +179,7 @@ gk20a_volt_new(struct nvkm_device *device, int index, struct nvkm_volt **pvolt)
 		volt->base.vid[i].vid = i;
 		volt->base.vid[i].uv =
 			gk20a_volt_calc_voltage(&gk20a_cvb_coef[i],
-						device->gpu->gpu_speedo);
+						tdev->gpu_speedo);
 		nvkm_debug(&volt->base.subdev, "%2d: vid=%d, uv=%d\n", i,
 			   volt->base.vid[i].vid, volt->base.vid[i].uv);
 	}