diff options
Diffstat (limited to 'drivers/gpu/drm/drm_client.c')
| -rw-r--r-- | drivers/gpu/drm/drm_client.c | 75 |
1 files changed, 60 insertions, 15 deletions
diff --git a/drivers/gpu/drm/drm_client.c b/drivers/gpu/drm/drm_client.c index f20d1dda3961..e1dafb0cc5e2 100644 --- a/drivers/gpu/drm/drm_client.c +++ b/drivers/gpu/drm/drm_client.c @@ -15,10 +15,10 @@ #include <drm/drm_drv.h> #include <drm/drm_file.h> #include <drm/drm_fourcc.h> +#include <drm/drm_framebuffer.h> #include <drm/drm_gem.h> #include <drm/drm_mode.h> #include <drm/drm_print.h> -#include <drm/drmP.h> #include "drm_crtc_internal.h" #include "drm_internal.h" @@ -27,7 +27,6 @@ * DOC: overview * * This library provides support for clients running in the kernel like fbdev and bootsplash. - * Currently it's only partially implemented, just enough to support fbdev. * * GEM drivers which provide a GEM based dumb buffer with a virtual address are supported. */ @@ -92,14 +91,20 @@ int drm_client_init(struct drm_device *dev, struct drm_client_dev *client, client->name = name; client->funcs = funcs; - ret = drm_client_open(client); + ret = drm_client_modeset_create(client); if (ret) goto err_put_module; + ret = drm_client_open(client); + if (ret) + goto err_free; + drm_dev_get(dev); return 0; +err_free: + drm_client_modeset_free(client); err_put_module: if (funcs) module_put(funcs->owner); @@ -148,6 +153,7 @@ void drm_client_release(struct drm_client_dev *client) DRM_DEV_DEBUG_KMS(dev->dev, "%s\n", client->name); + drm_client_modeset_free(client); drm_client_close(client); drm_dev_put(dev); if (client->funcs) @@ -243,11 +249,11 @@ static void drm_client_buffer_delete(struct drm_client_buffer *buffer) static struct drm_client_buffer * drm_client_buffer_create(struct drm_client_dev *client, u32 width, u32 height, u32 format) { + const struct drm_format_info *info = drm_format_info(format); struct drm_mode_create_dumb dumb_args = { }; struct drm_device *dev = client->dev; struct drm_client_buffer *buffer; struct drm_gem_object *obj; - void *vaddr; int ret; buffer = kzalloc(sizeof(*buffer), GFP_KERNEL); @@ -258,7 +264,7 @@ drm_client_buffer_create(struct drm_client_dev *client, u32 width, u32 height, u dumb_args.width = width; dumb_args.height = height; - dumb_args.bpp = drm_format_plane_cpp(format, 0) * 8; + dumb_args.bpp = info->cpp[0] * 8; ret = drm_mode_create_dumb(dev, &dumb_args, client->file); if (ret) goto err_delete; @@ -274,6 +280,36 @@ drm_client_buffer_create(struct drm_client_dev *client, u32 width, u32 height, u buffer->gem = obj; + return buffer; + +err_delete: + drm_client_buffer_delete(buffer); + + return ERR_PTR(ret); +} + +/** + * drm_client_buffer_vmap - Map DRM client buffer into address space + * @buffer: DRM client buffer + * + * This function maps a client buffer into kernel address space. If the + * buffer is already mapped, it returns the mapping's address. + * + * Client buffer mappings are not ref'counted. Each call to + * drm_client_buffer_vmap() should be followed by a call to + * drm_client_buffer_vunmap(); or the client buffer should be mapped + * throughout its lifetime. + * + * Returns: + * The mapped memory's address + */ +void *drm_client_buffer_vmap(struct drm_client_buffer *buffer) +{ + void *vaddr; + + if (buffer->vaddr) + return buffer->vaddr; + /* * FIXME: The dependency on GEM here isn't required, we could * convert the driver handle to a dma-buf instead and use the @@ -282,21 +318,30 @@ drm_client_buffer_create(struct drm_client_dev *client, u32 width, u32 height, u * fd_install step out of the driver backend hooks, to make that * final step optional for internal users. */ - vaddr = drm_gem_vmap(obj); - if (IS_ERR(vaddr)) { - ret = PTR_ERR(vaddr); - goto err_delete; - } + vaddr = drm_gem_vmap(buffer->gem); + if (IS_ERR(vaddr)) + return vaddr; buffer->vaddr = vaddr; - return buffer; - -err_delete: - drm_client_buffer_delete(buffer); + return vaddr; +} +EXPORT_SYMBOL(drm_client_buffer_vmap); - return ERR_PTR(ret); +/** + * drm_client_buffer_vunmap - Unmap DRM client buffer + * @buffer: DRM client buffer + * + * This function removes a client buffer's memory mapping. Calling this + * function is only required by clients that manage their buffer mappings + * by themselves. + */ +void drm_client_buffer_vunmap(struct drm_client_buffer *buffer) +{ + drm_gem_vunmap(buffer->gem, buffer->vaddr); + buffer->vaddr = NULL; } +EXPORT_SYMBOL(drm_client_buffer_vunmap); static void drm_client_buffer_rmfb(struct drm_client_buffer *buffer) { |