Merge tag 'drm/tegra/for-4.10-rc1' of git://anongit.freedesktop.org/tegra/linux into drm-next

drm/tegra: Changes for v4.10-rc1

This has a couple of fixes for IOMMU support and some fixes for error
handling.

* tag 'drm/tegra/for-4.10-rc1' of git://anongit.freedesktop.org/tegra/linux:
  drm/tegra: Set sgt pointer in BO pin
  drm/tegra: Support kernel mappings with IOMMU
  gpu: host1x: Add locking to syncpt
  gpu: host1x: Store device address to all bufs
  drm/tegra: gem: Remove some dead code
  drm/tegra: sor: No need to free devm_ allocated memory
  drm/tegra: Fix error handling
  drm/tegra: dpaux: Fix error handling

7 files changed, 64 insertions, 22 deletions

diff --git a/drivers/gpu/drm/tegra/dpaux.c b/drivers/gpu/drm/tegra/dpaux.c
index 059f409556d5..2fde44c3a1b3 100644
--- a/drivers/gpu/drm/tegra/dpaux.c
+++ b/drivers/gpu/drm/tegra/dpaux.c
@@ -539,9 +539,9 @@ static int tegra_dpaux_probe(struct platform_device *pdev)
 	dpaux->desc.owner = THIS_MODULE;
 
 	dpaux->pinctrl = devm_pinctrl_register(&pdev->dev, &dpaux->desc, dpaux);
-	if (!dpaux->pinctrl) {
+	if (IS_ERR(dpaux->pinctrl)) {
 		dev_err(&pdev->dev, "failed to register pincontrol\n");
-		return -ENODEV;
+		return PTR_ERR(dpaux->pinctrl);
 	}
 #endif
 	/* enable and clear all interrupts */
diff --git a/drivers/gpu/drm/tegra/gem.c b/drivers/gpu/drm/tegra/gem.c
index 95e622e31931..c08e5279eeac 100644
--- a/drivers/gpu/drm/tegra/gem.c
+++ b/drivers/gpu/drm/tegra/gem.c
@@ -2,7 +2,7 @@
  * NVIDIA Tegra DRM GEM helper functions
  *
  * Copyright (C) 2012 Sascha Hauer, Pengutronix
- * Copyright (C) 2013 NVIDIA CORPORATION, All rights reserved.
+ * Copyright (C) 2013-2015 NVIDIA CORPORATION, All rights reserved.
  *
  * Based on the GEM/CMA helpers
  *
@@ -36,6 +36,8 @@ static dma_addr_t tegra_bo_pin(struct host1x_bo *bo, struct sg_table **sgt)
 {
 	struct tegra_bo *obj = host1x_to_tegra_bo(bo);
 
+	*sgt = obj->sgt;
+
 	return obj->paddr;
 }
 
@@ -47,23 +49,51 @@ static void *tegra_bo_mmap(struct host1x_bo *bo)
 {
 	struct tegra_bo *obj = host1x_to_tegra_bo(bo);
 
-	return obj->vaddr;
+	if (obj->vaddr)
+		return obj->vaddr;
+	else if (obj->gem.import_attach)
+		return dma_buf_vmap(obj->gem.import_attach->dmabuf);
+	else
+		return vmap(obj->pages, obj->num_pages, VM_MAP,
+			    pgprot_writecombine(PAGE_KERNEL));
 }
 
 static void tegra_bo_munmap(struct host1x_bo *bo, void *addr)
 {
+	struct tegra_bo *obj = host1x_to_tegra_bo(bo);
+
+	if (obj->vaddr)
+		return;
+	else if (obj->gem.import_attach)
+		dma_buf_vunmap(obj->gem.import_attach->dmabuf, addr);
+	else
+		vunmap(addr);
 }
 
 static void *tegra_bo_kmap(struct host1x_bo *bo, unsigned int page)
 {
 	struct tegra_bo *obj = host1x_to_tegra_bo(bo);
 
-	return obj->vaddr + page * PAGE_SIZE;
+	if (obj->vaddr)
+		return obj->vaddr + page * PAGE_SIZE;
+	else if (obj->gem.import_attach)
+		return dma_buf_kmap(obj->gem.import_attach->dmabuf, page);
+	else
+		return vmap(obj->pages + page, 1, VM_MAP,
+			    pgprot_writecombine(PAGE_KERNEL));
 }
 
 static void tegra_bo_kunmap(struct host1x_bo *bo, unsigned int page,
 			    void *addr)
 {
+	struct tegra_bo *obj = host1x_to_tegra_bo(bo);
+
+	if (obj->vaddr)
+		return;
+	else if (obj->gem.import_attach)
+		dma_buf_kunmap(obj->gem.import_attach->dmabuf, page, addr);
+	else
+		vunmap(addr);
 }
 
 static struct host1x_bo *tegra_bo_get(struct host1x_bo *bo)
@@ -318,11 +348,6 @@ static struct tegra_bo *tegra_bo_import(struct drm_device *drm,
 	get_dma_buf(buf);
 
 	bo->sgt = dma_buf_map_attachment(attach, DMA_TO_DEVICE);
-	if (!bo->sgt) {
-		err = -ENOMEM;
-		goto detach;
-	}
-
 	if (IS_ERR(bo->sgt)) {
 		err = PTR_ERR(bo->sgt);
 		goto detach;
diff --git a/drivers/gpu/drm/tegra/gr3d.c b/drivers/gpu/drm/tegra/gr3d.c
index 0b3f2b977ba0..13f0d1b7cd98 100644
--- a/drivers/gpu/drm/tegra/gr3d.c
+++ b/drivers/gpu/drm/tegra/gr3d.c
@@ -268,9 +268,9 @@ static int gr3d_probe(struct platform_device *pdev)
 
 	if (of_device_is_compatible(np, "nvidia,tegra30-gr3d")) {
 		gr3d->clk_secondary = devm_clk_get(&pdev->dev, "3d2");
-		if (IS_ERR(gr3d->clk)) {
+		if (IS_ERR(gr3d->clk_secondary)) {
 			dev_err(&pdev->dev, "cannot get secondary clock\n");
-			return PTR_ERR(gr3d->clk);
+			return PTR_ERR(gr3d->clk_secondary);
 		}
 
 		gr3d->rst_secondary = devm_reset_control_get(&pdev->dev,
diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c
index 74d0540b8d4c..a8f528925009 100644
--- a/drivers/gpu/drm/tegra/sor.c
+++ b/drivers/gpu/drm/tegra/sor.c
@@ -349,8 +349,6 @@ static struct clk *tegra_clk_sor_brick_register(struct tegra_sor *sor,
 	brick->hw.init = &init;
 
 	clk = devm_clk_register(sor->dev, &brick->hw);
-	if (IS_ERR(clk))
-		kfree(brick);
 
 	return clk;
 }
diff --git a/drivers/gpu/host1x/dev.h b/drivers/gpu/host1x/dev.h
index 5220510f39da..06dd4f85125f 100644
--- a/drivers/gpu/host1x/dev.h
+++ b/drivers/gpu/host1x/dev.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012-2013, NVIDIA Corporation.
+ * Copyright (c) 2012-2015, NVIDIA Corporation.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
@@ -120,6 +120,7 @@ struct host1x {
 
 	struct host1x_syncpt *nop_sp;
 
+	struct mutex syncpt_mutex;
 	struct mutex chlist_mutex;
 	struct host1x_channel chlist;
 	unsigned long allocated_channels;
diff --git a/drivers/gpu/host1x/job.c b/drivers/gpu/host1x/job.c
index a91b7c4a6110..92c3df933303 100644
--- a/drivers/gpu/host1x/job.c
+++ b/drivers/gpu/host1x/job.c
@@ -1,7 +1,7 @@
 /*
  * Tegra host1x Job
  *
- * Copyright (c) 2010-2013, NVIDIA Corporation.
+ * Copyright (c) 2010-2015, NVIDIA Corporation.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
@@ -539,9 +539,12 @@ int host1x_job_pin(struct host1x_job *job, struct device *dev)
 
 		g->base = job->gather_addr_phys[i];
 
-		for (j = i + 1; j < job->num_gathers; j++)
-			if (job->gathers[j].bo == g->bo)
+		for (j = i + 1; j < job->num_gathers; j++) {
+			if (job->gathers[j].bo == g->bo) {
 				job->gathers[j].handled = true;
+				job->gathers[j].base = g->base;
+			}
+		}
 
 		err = do_relocs(job, g->bo);
 		if (err)
diff --git a/drivers/gpu/host1x/syncpt.c b/drivers/gpu/host1x/syncpt.c
index 95589328ad52..25c11a85050b 100644
--- a/drivers/gpu/host1x/syncpt.c
+++ b/drivers/gpu/host1x/syncpt.c
@@ -1,7 +1,7 @@
 /*
  * Tegra host1x Syncpoints
  *
- * Copyright (c) 2010-2013, NVIDIA Corporation.
+ * Copyright (c) 2010-2015, NVIDIA Corporation.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
@@ -61,22 +61,24 @@ static struct host1x_syncpt *host1x_syncpt_alloc(struct host1x *host,
 	struct host1x_syncpt *sp = host->syncpt;
 	char *name;
 
+	mutex_lock(&host->syncpt_mutex);
+
 	for (i = 0; i < host->info->nb_pts && sp->name; i++, sp++)
 		;
 
 	if (i >= host->info->nb_pts)
-		return NULL;
+		goto unlock;
 
 	if (flags & HOST1X_SYNCPT_HAS_BASE) {
 		sp->base = host1x_syncpt_base_request(host);
 		if (!sp->base)
-			return NULL;
+			goto unlock;
 	}
 
 	name = kasprintf(GFP_KERNEL, "%02u-%s", sp->id,
 			dev ? dev_name(dev) : NULL);
 	if (!name)
-		return NULL;
+		goto free_base;
 
 	sp->dev = dev;
 	sp->name = name;
@@ -86,7 +88,15 @@ static struct host1x_syncpt *host1x_syncpt_alloc(struct host1x *host,
 	else
 		sp->client_managed = false;
 
+	mutex_unlock(&host->syncpt_mutex);
 	return sp;
+
+free_base:
+	host1x_syncpt_base_free(sp->base);
+	sp->base = NULL;
+unlock:
+	mutex_unlock(&host->syncpt_mutex);
+	return NULL;
 }
 
 u32 host1x_syncpt_id(struct host1x_syncpt *sp)
@@ -378,6 +388,7 @@ int host1x_syncpt_init(struct host1x *host)
 	for (i = 0; i < host->info->nb_bases; i++)
 		bases[i].id = i;
 
+	mutex_init(&host->syncpt_mutex);
 	host->syncpt = syncpt;
 	host->bases = bases;
 
@@ -405,12 +416,16 @@ void host1x_syncpt_free(struct host1x_syncpt *sp)
 	if (!sp)
 		return;
 
+	mutex_lock(&sp->host->syncpt_mutex);
+
 	host1x_syncpt_base_free(sp->base);
 	kfree(sp->name);
 	sp->base = NULL;
 	sp->dev = NULL;
 	sp->name = NULL;
 	sp->client_managed = false;
+
+	mutex_unlock(&sp->host->syncpt_mutex);
 }
 EXPORT_SYMBOL(host1x_syncpt_free);