Re: [PATCH 18/18] drm/fbdev: Remove aperture handling and FBINFO_MISC_FIRMWARE

2022-12-20 Thread Javier Martinez Canillas
On 12/19/22 17:05, Thomas Zimmermann wrote:
> There are no users left of struct fb_info.apertures and the flag
> FBINFO_MISC_FIRMWARE. Remove both and the aperture-ownership code
> in the fbdev core. All code for aperture ownership is now located
> in the fbdev drivers.
> 
> Signed-off-by: Thomas Zimmermann 
> ---
>  drivers/video/fbdev/core/fbmem.c   | 33 --
>  drivers/video/fbdev/core/fbsysfs.c |  1 -
>  include/linux/fb.h | 22 
>  3 files changed, 56 deletions(-)

Nice patch!

Reviewed-by: Javier Martinez Canillas 

-- 
Best regards,

Javier Martinez Canillas
Core Platforms
Red Hat



[PATCH 18/18] drm/fbdev: Remove aperture handling and FBINFO_MISC_FIRMWARE

2022-12-19 Thread Thomas Zimmermann
There are no users left of struct fb_info.apertures and the flag
FBINFO_MISC_FIRMWARE. Remove both and the aperture-ownership code
in the fbdev core. All code for aperture ownership is now located
in the fbdev drivers.

Signed-off-by: Thomas Zimmermann 
---
 drivers/video/fbdev/core/fbmem.c   | 33 --
 drivers/video/fbdev/core/fbsysfs.c |  1 -
 include/linux/fb.h | 22 
 3 files changed, 56 deletions(-)

diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c
index 3a6c8458eb8d..02217c33d152 100644
--- a/drivers/video/fbdev/core/fbmem.c
+++ b/drivers/video/fbdev/core/fbmem.c
@@ -13,7 +13,6 @@
 
 #include 
 
-#include 
 #include 
 #include 
 #include 
@@ -1653,32 +1652,6 @@ static void do_unregister_framebuffer(struct fb_info 
*fb_info)
put_fb_info(fb_info);
 }
 
-static int fb_aperture_acquire_for_platform_device(struct fb_info *fb_info)
-{
-   struct apertures_struct *ap = fb_info->apertures;
-   struct device *dev = fb_info->device;
-   struct platform_device *pdev;
-   unsigned int i;
-   int ret;
-
-   if (!ap)
-   return 0;
-
-   if (!dev_is_platform(dev))
-   return 0;
-
-   pdev = to_platform_device(dev);
-
-   for (ret = 0, i = 0; i < ap->count; ++i) {
-   ret = devm_aperture_acquire_for_platform_device(pdev, 
ap->ranges[i].base,
-   
ap->ranges[i].size);
-   if (ret)
-   break;
-   }
-
-   return ret;
-}
-
 /**
  * register_framebuffer - registers a frame buffer device
  * @fb_info: frame buffer info structure
@@ -1693,12 +1666,6 @@ register_framebuffer(struct fb_info *fb_info)
 {
int ret;
 
-   if (fb_info->flags & FBINFO_MISC_FIRMWARE) {
-   ret = fb_aperture_acquire_for_platform_device(fb_info);
-   if (ret)
-   return ret;
-   }
-
mutex_lock(_lock);
ret = do_register_framebuffer(fb_info);
mutex_unlock(_lock);
diff --git a/drivers/video/fbdev/core/fbsysfs.c 
b/drivers/video/fbdev/core/fbsysfs.c
index 4d7f63892dcc..0c33c4adcd79 100644
--- a/drivers/video/fbdev/core/fbsysfs.c
+++ b/drivers/video/fbdev/core/fbsysfs.c
@@ -88,7 +88,6 @@ void framebuffer_release(struct fb_info *info)
mutex_destroy(>bl_curve_mutex);
 #endif
 
-   kfree(info->apertures);
kfree(info);
 }
 EXPORT_SYMBOL(framebuffer_release);
diff --git a/include/linux/fb.h b/include/linux/fb.h
index 96b96323e9cb..30183fd259ae 100644
--- a/include/linux/fb.h
+++ b/include/linux/fb.h
@@ -423,8 +423,6 @@ struct fb_tile_ops {
  */
 #define FBINFO_MISC_ALWAYS_SETPAR   0x4
 
-/* where the fb is a firmware driver, and can be replaced with a proper one */
-#define FBINFO_MISC_FIRMWARE0x8
 /*
  * Host and GPU endianness differ.
  */
@@ -499,30 +497,10 @@ struct fb_info {
void *fbcon_par;/* fbcon use-only private area */
/* From here on everything is device dependent */
void *par;
-   /* we need the PCI or similar aperture base/size not
-  smem_start/size as smem_start may just be an object
-  allocated inside the aperture so may not actually overlap */
-   struct apertures_struct {
-   unsigned int count;
-   struct aperture {
-   resource_size_t base;
-   resource_size_t size;
-   } ranges[0];
-   } *apertures;
 
bool skip_vt_switch; /* no VT switch on suspend/resume required */
 };
 
-static inline struct apertures_struct *alloc_apertures(unsigned int max_num) {
-   struct apertures_struct *a;
-
-   a = kzalloc(struct_size(a, ranges, max_num), GFP_KERNEL);
-   if (!a)
-   return NULL;
-   a->count = max_num;
-   return a;
-}
-
 #define FBINFO_FLAG_DEFAULTFBINFO_DEFAULT
 
 /* This will go away
-- 
2.39.0