Re: [PATCH drm/hisilicon 1/3] drm/hisilicon: Code refactoring for hibmc_drm_drv

"tiantao (H)" <tiantao6@xxxxxxxxxx> · Wed, 2 Dec 2020 17:27:51 +0800

Hi

在 2020/12/2 17:02, Thomas Zimmermann 写道:


Am 02.12.20 um 09:47 schrieb Tian Tao:
Use the devm_drm_dev_alloc provided by the drm framework to alloc
a structure hibmc_drm_private.

Signed-off-by: Tian Tao <tiantao6@xxxxxxxxxxxxx>

This looks good now. Thanks for sticking to it.


Thank you for your continued patience and guidance.

Acked-by: Thomas Zimmermann <tzimmermann@xxxxxxx>

---
  drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c   |  2 +-
  drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c  | 46 
+++++++++++-------------
  drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h  |  4 +--
  drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_vdac.c |  2 +-
  drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c      |  8 +++--
  5 files changed, 30 insertions(+), 32 deletions(-)

diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c 
b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c
index ea962ac..096eea9 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c
@@ -499,7 +499,7 @@ static const struct drm_crtc_helper_funcs 
hibmc_crtc_helper_funcs = {
  int hibmc_de_init(struct hibmc_drm_private *priv)
  {
-    struct drm_device *dev = priv->dev;
+    struct drm_device *dev = &priv->dev;
      struct drm_crtc *crtc = &priv->crtc;
      struct drm_plane *plane = &priv->primary_plane;
      int ret;
diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c 
b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
index d845657..13e8a28 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
@@ -79,31 +79,32 @@ static const struct dev_pm_ops hibmc_pm_ops = {
  static int hibmc_kms_init(struct hibmc_drm_private *priv)
  {
+    struct drm_device *dev = &priv->dev;
      int ret;
-    drm_mode_config_init(priv->dev);
+    drm_mode_config_init(dev);
      priv->mode_config_initialized = true;
-    priv->dev->mode_config.min_width = 0;
-    priv->dev->mode_config.min_height = 0;
-    priv->dev->mode_config.max_width = 1920;
-    priv->dev->mode_config.max_height = 1200;
+    dev->mode_config.min_width = 0;
+    dev->mode_config.min_height = 0;
+    dev->mode_config.max_width = 1920;
+    dev->mode_config.max_height = 1200;
-    priv->dev->mode_config.fb_base = priv->fb_base;
-    priv->dev->mode_config.preferred_depth = 32;
-    priv->dev->mode_config.prefer_shadow = 1;
+    dev->mode_config.fb_base = priv->fb_base;
+    dev->mode_config.preferred_depth = 32;
+    dev->mode_config.prefer_shadow = 1;
-    priv->dev->mode_config.funcs = (void *)&hibmc_mode_funcs;
+    dev->mode_config.funcs = (void *)&hibmc_mode_funcs;
      ret = hibmc_de_init(priv);
      if (ret) {
-        drm_err(priv->dev, "failed to init de: %d\n", ret);
+        drm_err(dev, "failed to init de: %d\n", ret);
          return ret;
      }
      ret = hibmc_vdac_init(priv);
      if (ret) {
-        drm_err(priv->dev, "failed to init vdac: %d\n", ret);
+        drm_err(dev, "failed to init vdac: %d\n", ret);
          return ret;
      }
@@ -113,7 +114,7 @@ static int hibmc_kms_init(struct hibmc_drm_private 
*priv)
  static void hibmc_kms_fini(struct hibmc_drm_private *priv)
  {
      if (priv->mode_config_initialized) {
-        drm_mode_config_cleanup(priv->dev);
+        drm_mode_config_cleanup(&priv->dev);
          priv->mode_config_initialized = false;
      }
  }
@@ -202,7 +203,7 @@ static void hibmc_hw_config(struct 
hibmc_drm_private *priv)
  static int hibmc_hw_map(struct hibmc_drm_private *priv)
  {
-    struct drm_device *dev = priv->dev;
+    struct drm_device *dev = &priv->dev;
      struct pci_dev *pdev = dev->pdev;
      resource_size_t addr, size, ioaddr, iosize;
@@ -258,17 +259,9 @@ static int hibmc_unload(struct drm_device *dev)
  static int hibmc_load(struct drm_device *dev)
  {
-    struct hibmc_drm_private *priv;
+    struct hibmc_drm_private *priv = to_hibmc_drm_private(dev);
      int ret;
-    priv = drmm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
-    if (!priv) {
-        drm_err(dev, "no memory to allocate for hibmc_drm_private\n");
-        return -ENOMEM;
-    }
-    dev->dev_private = priv;
-    priv->dev = dev;
-
      ret = hibmc_hw_init(priv);
      if (ret)
          goto err;
@@ -310,6 +303,7 @@ static int hibmc_load(struct drm_device *dev)
  static int hibmc_pci_probe(struct pci_dev *pdev,
                 const struct pci_device_id *ent)
  {
+    struct hibmc_drm_private *priv;
      struct drm_device *dev;
      int ret;
@@ -318,12 +312,14 @@ static int hibmc_pci_probe(struct pci_dev *pdev,
      if (ret)
          return ret;
-    dev = drm_dev_alloc(&hibmc_driver, &pdev->dev);
-    if (IS_ERR(dev)) {
+    priv = devm_drm_dev_alloc(&pdev->dev, &hibmc_driver,
+                  struct hibmc_drm_private, dev);
+    if (IS_ERR(priv)) {
          DRM_ERROR("failed to allocate drm_device\n");
-        return PTR_ERR(dev);
+        return PTR_ERR(priv);
      }
+    dev = &priv->dev;
      dev->pdev = pdev;
      pci_set_drvdata(pdev, dev);
diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h 
b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
index f310a83..7e0c756 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
@@ -37,7 +37,7 @@ struct hibmc_drm_private {
      resource_size_t  fb_size;
      /* drm */
-    struct drm_device  *dev;
+    struct drm_device dev;
      struct drm_plane primary_plane;
      struct drm_crtc crtc;
      struct drm_encoder encoder;
@@ -52,7 +52,7 @@ static inline struct hibmc_connector 
*to_hibmc_connector(struct drm_connector *c
  static inline struct hibmc_drm_private *to_hibmc_drm_private(struct 
drm_device *dev)
  {
-    return dev->dev_private;
+    return container_of(dev, struct hibmc_drm_private, dev);
  }
  void hibmc_set_power_mode(struct hibmc_drm_private *priv,
diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_vdac.c 
b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_vdac.c
index 74e26c2..d35548d 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_vdac.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_vdac.c
@@ -96,7 +96,7 @@ static const struct drm_encoder_funcs 
hibmc_encoder_funcs = {
  int hibmc_vdac_init(struct hibmc_drm_private *priv)
  {
-    struct drm_device *dev = priv->dev;
+    struct drm_device *dev = &priv->dev;
      struct hibmc_connector *hibmc_connector = &priv->connector;
      struct drm_encoder *encoder = &priv->encoder;
      struct drm_connector *connector = &hibmc_connector->base;
diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c 
b/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c
index 602ece1..e84fb81 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c
@@ -25,7 +25,7 @@ int hibmc_mm_init(struct hibmc_drm_private *hibmc)
  {
      struct drm_vram_mm *vmm;
      int ret;
-    struct drm_device *dev = hibmc->dev;
+    struct drm_device *dev = &hibmc->dev;
      vmm = drm_vram_helper_alloc_mm(dev,
                         pci_resource_start(dev->pdev, 0),
@@ -41,10 +41,12 @@ int hibmc_mm_init(struct hibmc_drm_private *hibmc)
  void hibmc_mm_fini(struct hibmc_drm_private *hibmc)
  {
-    if (!hibmc->dev->vram_mm)
+    struct drm_device *dev = &hibmc->dev;
+
+    if (!dev->vram_mm)
          return;
-    drm_vram_helper_release_mm(hibmc->dev);
+    drm_vram_helper_release_mm(dev);
  }
  int hibmc_dumb_create(struct drm_file *file, struct drm_device *dev,



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