diff options
| -rw-r--r-- | Documentation/gpu/drm-mm.rst | 15 | ||||
| -rw-r--r-- | MAINTAINERS | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/drm_atomic.c | 5 | ||||
| -rw-r--r-- | drivers/gpu/drm/drm_color_mgmt.c | 24 | ||||
| -rw-r--r-- | drivers/gpu/drm/virtio/virtgpu_kms.c | 6 | ||||
| -rw-r--r-- | include/drm/drm_color_mgmt.h | 27 |
6 files changed, 45 insertions, 33 deletions
diff --git a/Documentation/gpu/drm-mm.rst b/Documentation/gpu/drm-mm.rst index 91d82f39fbf4..f5760b140f13 100644 --- a/Documentation/gpu/drm-mm.rst +++ b/Documentation/gpu/drm-mm.rst @@ -291,10 +291,17 @@ To use :c:func:`drm_gem_mmap()`, drivers must fill the struct :c:type:`struct drm_driver <drm_driver>` gem_vm_ops field with a pointer to VM operations. -struct vm_operations_struct \*gem_vm_ops struct -vm_operations_struct { void (\*open)(struct vm_area_struct \* area); -void (\*close)(struct vm_area_struct \* area); int (\*fault)(struct -vm_area_struct \*vma, struct vm_fault \*vmf); }; +The VM operations is a :c:type:`struct vm_operations_struct <vm_operations_struct>` +made up of several fields, the more interesting ones being: + +.. code-block:: c + + struct vm_operations_struct { + void (*open)(struct vm_area_struct * area); + void (*close)(struct vm_area_struct * area); + int (*fault)(struct vm_fault *vmf); + }; + The open and close operations must update the GEM object reference count. Drivers can use the :c:func:`drm_gem_vm_open()` and diff --git a/MAINTAINERS b/MAINTAINERS index e4d5ff62f2ec..adfc60d9c456 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -3970,6 +3970,7 @@ S: Maintained F: drivers/dma-buf/sync_* +F: drivers/dma-buf/dma-fence* F: drivers/dma-buf/sw_sync.c F: include/linux/sync_file.h F: include/uapi/linux/sync_file.h diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c index e5b738660d66..c97588a28216 100644 --- a/drivers/gpu/drm/drm_atomic.c +++ b/drivers/gpu/drm/drm_atomic.c @@ -307,9 +307,8 @@ static s64 __user *get_out_fence_for_crtc(struct drm_atomic_state *state, * @state: the CRTC whose incoming state to update * @mode: kernel-internal mode to use for the CRTC, or NULL to disable * - * Set a mode (originating from the kernel) on the desired CRTC state. Does - * not change any other state properties, including enable, active, or - * mode_changed. + * Set a mode (originating from the kernel) on the desired CRTC state and update + * the enable property. * * RETURNS: * Zero on success, error code on failure. Cannot return -EDEADLK. diff --git a/drivers/gpu/drm/drm_color_mgmt.c b/drivers/gpu/drm/drm_color_mgmt.c index 789b4c65cd69..cc23b9a505c0 100644 --- a/drivers/gpu/drm/drm_color_mgmt.c +++ b/drivers/gpu/drm/drm_color_mgmt.c @@ -88,6 +88,30 @@ */ /** + * drm_color_lut_extract - clamp and round LUT entries + * @user_input: input value + * @bit_precision: number of bits the hw LUT supports + * + * Extract a degamma/gamma LUT value provided by user (in the form of + * &drm_color_lut entries) and round it to the precision supported by the + * hardware. + */ +uint32_t drm_color_lut_extract(uint32_t user_input, uint32_t bit_precision) +{ + uint32_t val = user_input; + uint32_t max = 0xffff >> (16 - bit_precision); + + /* Round only if we're not using full precision. */ + if (bit_precision < 16) { + val += 1UL << (16 - bit_precision - 1); + val >>= 16 - bit_precision; + } + + return clamp_val(val, 0, max); +} +EXPORT_SYMBOL(drm_color_lut_extract); + +/** * drm_crtc_enable_color_mgmt - enable color management properties * @crtc: DRM CRTC * @degamma_lut_size: the size of the degamma lut (before CSC) diff --git a/drivers/gpu/drm/virtio/virtgpu_kms.c b/drivers/gpu/drm/virtio/virtgpu_kms.c index fae75394b5d0..30f989a0cafc 100644 --- a/drivers/gpu/drm/virtio/virtgpu_kms.c +++ b/drivers/gpu/drm/virtio/virtgpu_kms.c @@ -166,10 +166,14 @@ int virtio_gpu_driver_load(struct drm_device *dev, unsigned long flags) INIT_WORK(&vgdev->config_changed_work, virtio_gpu_config_changed_work_func); +#ifdef __LITTLE_ENDIAN if (virtio_has_feature(vgdev->vdev, VIRTIO_GPU_F_VIRGL)) vgdev->has_virgl_3d = true; DRM_INFO("virgl 3d acceleration %s\n", - vgdev->has_virgl_3d ? "enabled" : "not available"); + vgdev->has_virgl_3d ? "enabled" : "not supported by host"); +#else + DRM_INFO("virgl 3d acceleration not supported by guest\n"); +#endif ret = vgdev->vdev->config->find_vqs(vgdev->vdev, 2, vqs, callbacks, names); diff --git a/include/drm/drm_color_mgmt.h b/include/drm/drm_color_mgmt.h index d9c2f680f5ae..bce4a532836d 100644 --- a/include/drm/drm_color_mgmt.h +++ b/include/drm/drm_color_mgmt.h @@ -25,6 +25,8 @@ #include <linux/ctype.h> +uint32_t drm_color_lut_extract(uint32_t user_input, uint32_t bit_precision); + void drm_crtc_enable_color_mgmt(struct drm_crtc *crtc, uint degamma_lut_size, bool has_ctm, @@ -33,29 +35,4 @@ void drm_crtc_enable_color_mgmt(struct drm_crtc *crtc, int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc, int gamma_size); -/** - * drm_color_lut_extract - clamp and round LUT entries - * @user_input: input value - * @bit_precision: number of bits the hw LUT supports - * - * Extract a degamma/gamma LUT value provided by user (in the form of - * &drm_color_lut entries) and round it to the precision supported by the - * hardware. - */ -static inline uint32_t drm_color_lut_extract(uint32_t user_input, - uint32_t bit_precision) -{ - uint32_t val = user_input; - uint32_t max = 0xffff >> (16 - bit_precision); - - /* Round only if we're not using full precision. */ - if (bit_precision < 16) { - val += 1UL << (16 - bit_precision - 1); - val >>= 16 - bit_precision; - } - - return clamp_val(val, 0, max); -} - - #endif |