Merge tag 'exynos-drm-next-for-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-next

Four cleanups
- Replacing lagacy gpio interface of dsi driver with gpiod one.
- Implementing a generic GEM object mmap and use it instead of
  exynos specific one.
- Dropping the use of label from dsi driver. Which also fixes
  a build warning.
- Just trivial cleanup by dropping unnecessay code.

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Inki Dae <inki.dae@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211222035345.26595-1-inki.dae@samsung.com

Author: airlied

drivers/gpu/drm/exynos/exynos_drm_drv.c

@@ -102,16 +102,7 @@ static const struct drm_ioctl_desc exynos_ioctls[] = {
 			DRM_RENDER_ALLOW),
 };
 
-static const struct file_operations exynos_drm_driver_fops = {
-	.owner		= THIS_MODULE,
-	.open		= drm_open,
-	.mmap		= exynos_drm_gem_mmap,
-	.poll		= drm_poll,
-	.read		= drm_read,
-	.unlocked_ioctl	= drm_ioctl,
-	.compat_ioctl = drm_compat_ioctl,
-	.release	= drm_release,
-};
+DEFINE_DRM_GEM_FOPS(exynos_drm_driver_fops);
 
 static const struct drm_driver exynos_drm_driver = {
 	.driver_features	= DRIVER_MODESET | DRIVER_GEM
@@ -124,7 +115,7 @@ static const struct drm_driver exynos_drm_driver = {
 	.prime_fd_to_handle	= drm_gem_prime_fd_to_handle,
 	.gem_prime_import	= exynos_drm_gem_prime_import,
 	.gem_prime_import_sg_table	= exynos_drm_gem_prime_import_sg_table,
-	.gem_prime_mmap		= exynos_drm_gem_prime_mmap,
+	.gem_prime_mmap		= drm_gem_prime_mmap,
 	.ioctls			= exynos_ioctls,
 	.num_ioctls		= ARRAY_SIZE(exynos_ioctls),
 	.fops			= &exynos_drm_driver_fops,

drivers/gpu/drm/exynos/exynos_drm_dsi.c

@@ -13,7 +13,6 @@
 #include <linux/gpio/consumer.h>
 #include <linux/irq.h>
 #include <linux/of_device.h>
-#include <linux/of_gpio.h>
 #include <linux/of_graph.h>
 #include <linux/phy/phy.h>
 #include <linux/regulator/consumer.h>
@@ -265,7 +264,7 @@ struct exynos_dsi {
 	struct clk **clks;
 	struct regulator_bulk_data supplies[2];
 	int irq;
-	int te_gpio;
+	struct gpio_desc *te_gpio;
 
 	u32 pll_clk_rate;
 	u32 burst_clk_rate;
@@ -1298,14 +1297,14 @@ static void exynos_dsi_enable_irq(struct exynos_dsi *dsi)
 {
 	enable_irq(dsi->irq);
 
-	if (gpio_is_valid(dsi->te_gpio))
-		enable_irq(gpio_to_irq(dsi->te_gpio));
+	if (dsi->te_gpio)
+		enable_irq(gpiod_to_irq(dsi->te_gpio));
 }
 
 static void exynos_dsi_disable_irq(struct exynos_dsi *dsi)
 {
-	if (gpio_is_valid(dsi->te_gpio))
-		disable_irq(gpio_to_irq(dsi->te_gpio));
+	if (dsi->te_gpio)
+		disable_irq(gpiod_to_irq(dsi->te_gpio));
 
 	disable_irq(dsi->irq);
 }
@@ -1335,42 +1334,31 @@ static int exynos_dsi_register_te_irq(struct exynos_dsi *dsi,
 	int ret;
 	int te_gpio_irq;
 
-	dsi->te_gpio = of_get_named_gpio(panel->of_node, "te-gpios", 0);
-	if (dsi->te_gpio == -ENOENT)
-		return 0;
-
-	if (!gpio_is_valid(dsi->te_gpio)) {
-		ret = dsi->te_gpio;
-		dev_err(dsi->dev, "cannot get te-gpios, %d\n", ret);
-		goto out;
-	}
-
-	ret = gpio_request(dsi->te_gpio, "te_gpio");
-	if (ret) {
-		dev_err(dsi->dev, "gpio request failed with %d\n", ret);
-		goto out;
+	dsi->te_gpio = devm_gpiod_get_optional(dsi->dev, "te", GPIOD_IN);
+	if (IS_ERR(dsi->te_gpio)) {
+		dev_err(dsi->dev, "gpio request failed with %ld\n",
+				PTR_ERR(dsi->te_gpio));
+		return PTR_ERR(dsi->te_gpio);
 	}
 
-	te_gpio_irq = gpio_to_irq(dsi->te_gpio);
+	te_gpio_irq = gpiod_to_irq(dsi->te_gpio);
 
 	ret = request_threaded_irq(te_gpio_irq, exynos_dsi_te_irq_handler, NULL,
 				   IRQF_TRIGGER_RISING | IRQF_NO_AUTOEN, "TE", dsi);
 	if (ret) {
 		dev_err(dsi->dev, "request interrupt failed with %d\n", ret);
-		gpio_free(dsi->te_gpio);
-		goto out;
+		gpiod_put(dsi->te_gpio);
+		return ret;
 	}
 
-out:
-	return ret;
+	return 0;
 }
 
 static void exynos_dsi_unregister_te_irq(struct exynos_dsi *dsi)
 {
-	if (gpio_is_valid(dsi->te_gpio)) {
-		free_irq(gpio_to_irq(dsi->te_gpio), dsi);
-		gpio_free(dsi->te_gpio);
-		dsi->te_gpio = -ENOENT;
+	if (dsi->te_gpio) {
+		free_irq(gpiod_to_irq(dsi->te_gpio), dsi);
+		gpiod_put(dsi->te_gpio);
 	}
 }
 
@@ -1745,9 +1733,6 @@ static int exynos_dsi_probe(struct platform_device *pdev)
 	if (!dsi)
 		return -ENOMEM;
 
-	/* To be checked as invalid one */
-	dsi->te_gpio = -ENOENT;
-
 	init_completion(&dsi->completed);
 	spin_lock_init(&dsi->transfer_lock);
 	INIT_LIST_HEAD(&dsi->transfer_list);

drivers/gpu/drm/exynos/exynos_drm_fbdev.c

@@ -15,6 +15,7 @@
 #include <drm/drm_crtc.h>
 #include <drm/drm_fb_helper.h>
 #include <drm/drm_fourcc.h>
+#include <drm/drm_prime.h>
 #include <drm/drm_probe_helper.h>
 #include <drm/exynos_drm.h>
 
@@ -39,25 +40,8 @@ static int exynos_drm_fb_mmap(struct fb_info *info,
 	struct drm_fb_helper *helper = info->par;
 	struct exynos_drm_fbdev *exynos_fbd = to_exynos_fbdev(helper);
 	struct exynos_drm_gem *exynos_gem = exynos_fbd->exynos_gem;
-	unsigned long vm_size;
-	int ret;
-
-	vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
-
-	vm_size = vma->vm_end - vma->vm_start;
-
-	if (vm_size > exynos_gem->size)
-		return -EINVAL;
 
-	ret = dma_mmap_attrs(to_dma_dev(helper->dev), vma, exynos_gem->cookie,
-			     exynos_gem->dma_addr, exynos_gem->size,
-			     exynos_gem->dma_attrs);
-	if (ret < 0) {
-		DRM_DEV_ERROR(to_dma_dev(helper->dev), "failed to mmap.\n");
-		return ret;
-	}
-
-	return 0;
+	return drm_gem_prime_mmap(&exynos_gem->base, vma);
 }
 
 static const struct fb_ops exynos_drm_fb_ops = {

drivers/gpu/drm/exynos/exynos_drm_fimc.c

@@ -782,8 +782,8 @@ static int fimc_set_prescaler(struct fimc_context *ctx, struct fimc_scaler *sc,
 
 	sc->hratio = (src_w << 14) / (dst_w << hfactor);
 	sc->vratio = (src_h << 14) / (dst_h << vfactor);
-	sc->up_h = (dst_w >= src_w) ? true : false;
-	sc->up_v = (dst_h >= src_h) ? true : false;
+	sc->up_h = (dst_w >= src_w);
+	sc->up_v = (dst_h >= src_h);
 	DRM_DEV_DEBUG_KMS(ctx->dev, "hratio[%d]vratio[%d]up_h[%d]up_v[%d]\n",
 			  sc->hratio, sc->vratio, sc->up_h, sc->up_v);
 

drivers/gpu/drm/exynos/exynos_drm_gem.c

@@ -20,6 +20,8 @@
 
 MODULE_IMPORT_NS(DMA_BUF);
 
+static int exynos_drm_gem_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma);
+
 static int exynos_drm_alloc_buf(struct exynos_drm_gem *exynos_gem, bool kvmap)
 {
 	struct drm_device *dev = exynos_gem->base.dev;
@@ -138,6 +140,7 @@ static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
 static const struct drm_gem_object_funcs exynos_drm_gem_object_funcs = {
 	.free = exynos_drm_gem_free_object,
 	.get_sg_table = exynos_drm_gem_prime_get_sg_table,
+	.mmap = exynos_drm_gem_mmap,
 	.vm_ops = &exynos_drm_gem_vm_ops,
 };
 
@@ -357,12 +360,16 @@ int exynos_drm_gem_dumb_create(struct drm_file *file_priv,
 	return 0;
 }
 
-static int exynos_drm_gem_mmap_obj(struct drm_gem_object *obj,
-				   struct vm_area_struct *vma)
+static int exynos_drm_gem_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma)
 {
 	struct exynos_drm_gem *exynos_gem = to_exynos_gem(obj);
 	int ret;
 
+	if (obj->import_attach)
+		return dma_buf_mmap(obj->dma_buf, vma, 0);
+
+	vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
+
 	DRM_DEV_DEBUG_KMS(to_dma_dev(obj->dev), "flags = 0x%x\n",
 			  exynos_gem->flags);
 
@@ -388,26 +395,6 @@ static int exynos_drm_gem_mmap_obj(struct drm_gem_object *obj,
 	return ret;
 }
 
-int exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma)
-{
-	struct drm_gem_object *obj;
-	int ret;
-
-	/* set vm_area_struct. */
-	ret = drm_gem_mmap(filp, vma);
-	if (ret < 0) {
-		DRM_ERROR("failed to mmap.\n");
-		return ret;
-	}
-
-	obj = vma->vm_private_data;
-
-	if (obj->import_attach)
-		return dma_buf_mmap(obj->dma_buf, vma, 0);
-
-	return exynos_drm_gem_mmap_obj(obj, vma);
-}
-
 /* low-level interface prime helpers */
 struct drm_gem_object *exynos_drm_gem_prime_import(struct drm_device *dev,
 					    struct dma_buf *dma_buf)
@@ -469,15 +456,3 @@ exynos_drm_gem_prime_import_sg_table(struct drm_device *dev,
 	exynos_gem->sgt = sgt;
 	return &exynos_gem->base;
 }
-
-int exynos_drm_gem_prime_mmap(struct drm_gem_object *obj,
-			      struct vm_area_struct *vma)
-{
-	int ret;
-
-	ret = drm_gem_mmap_obj(obj, obj->size, vma);
-	if (ret < 0)
-		return ret;
-
-	return exynos_drm_gem_mmap_obj(obj, vma);
-}

drivers/gpu/drm/exynos/exynos_drm_gem.h

@@ -96,9 +96,6 @@ int exynos_drm_gem_dumb_create(struct drm_file *file_priv,
 			       struct drm_device *dev,
 			       struct drm_mode_create_dumb *args);
 
-/* set vm_flags and we can change the vm attribute to other one at here. */
-int exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
-
 /* low-level interface prime helpers */
 struct drm_gem_object *exynos_drm_gem_prime_import(struct drm_device *dev,
 					    struct dma_buf *dma_buf);
@@ -107,7 +104,5 @@ struct drm_gem_object *
 exynos_drm_gem_prime_import_sg_table(struct drm_device *dev,
 				     struct dma_buf_attachment *attach,
 				     struct sg_table *sgt);
-int exynos_drm_gem_prime_mmap(struct drm_gem_object *obj,
-			      struct vm_area_struct *vma);
 
 #endif