Currently, data for the device instance is held by vkms_device. Add a separate type, vkms_config to contain configuration details for the device and various modes to be later used by configfs. This config data stays constant once the device is created.
Accordingly, add vkms_create and vkms_destroy to initialize/destroy device through configfs. Currently, they are being called from vkms_init and vkms_exit, but will be evoked from configfs later on. When configfs is added, device configuration will be tracked by configfs and only vkms device lifetime will be handled by vkms_init and vkms_exit functions.
Modify usage of enable_cursor feature to reflect the changes in relevant files.
Add enable_writeback_connector feature to vkms_config type.
Co-developed-by: Daniel Vetter danvet.vetter@ffwl.ch Signed-off-by: Daniel Vetter danvet.vetter@ffwl.ch Signed-off-by: Sumera Priyadarsini sylphrenadin@gmail.com
--- Changes in v2: - add Co-developed-by tag
Changes in v3: - correct usage of Co-developed by tag(Melissa) - add enable_writeback_feature(Melissa) - modify commit message(Melissa) --- drivers/gpu/drm/vkms/vkms_drv.c | 45 ++++++++++++++++++++++++------ drivers/gpu/drm/vkms/vkms_drv.h | 12 ++++++-- drivers/gpu/drm/vkms/vkms_output.c | 13 +++++---- 3 files changed, 54 insertions(+), 16 deletions(-)
diff --git a/drivers/gpu/drm/vkms/vkms_drv.c b/drivers/gpu/drm/vkms/vkms_drv.c index aef29393b811..fab964900dce 100644 --- a/drivers/gpu/drm/vkms/vkms_drv.c +++ b/drivers/gpu/drm/vkms/vkms_drv.c @@ -34,12 +34,16 @@ #define DRIVER_MAJOR 1 #define DRIVER_MINOR 0
-static struct vkms_device *vkms_device; +static struct vkms_config *default_config;
-bool enable_cursor = true; +static bool enable_cursor = true; module_param_named(enable_cursor, enable_cursor, bool, 0444); MODULE_PARM_DESC(enable_cursor, "Enable/Disable cursor support");
+static bool enable_writeback_connector = true; +module_param_named(enable_writeback_connector, enable_writeback_connector, bool, 0444); +MODULE_PARM_DESC(enable_writeback_connector, "Enable/Disable writeback connector support"); + DEFINE_DRM_GEM_FOPS(vkms_driver_fops);
static void vkms_release(struct drm_device *dev) @@ -122,10 +126,11 @@ static int vkms_modeset_init(struct vkms_device *vkmsdev) return vkms_output_init(vkmsdev, 0); }
-static int __init vkms_init(void) +static int vkms_create(struct vkms_config *config) { int ret; struct platform_device *pdev; + struct vkms_device *vkms_device;
pdev = platform_device_register_simple(DRIVER_NAME, -1, NULL, 0); if (IS_ERR(pdev)) @@ -143,6 +148,8 @@ static int __init vkms_init(void) goto out_devres; } vkms_device->platform = pdev; + vkms_device->config = config; + config->dev = vkms_device;
ret = dma_coerce_mask_and_coherent(vkms_device->drm.dev, DMA_BIT_MASK(64)); @@ -179,21 +186,43 @@ static int __init vkms_init(void) return ret; }
-static void __exit vkms_exit(void) +static int __init vkms_init(void) +{ + struct vkms_config *config = kmalloc(sizeof(*config), GFP_KERNEL); + + default_config = config; + + config->cursor = enable_cursor; + config->writeback = enable_writeback_connector; + + return vkms_create(config); +} + +static void vkms_destroy(struct vkms_config *config) { struct platform_device *pdev;
- if (!vkms_device) { + if (!config->dev) { DRM_INFO("vkms_device is NULL.\n"); return; }
- pdev = vkms_device->platform; + pdev = config->dev->platform;
- drm_dev_unregister(&vkms_device->drm); - drm_atomic_helper_shutdown(&vkms_device->drm); + drm_dev_unregister(&config->dev->drm); + drm_atomic_helper_shutdown(&config->dev->drm); devres_release_group(&pdev->dev, NULL); platform_device_unregister(pdev); + + config->dev = NULL; +} + +static void __exit vkms_exit(void) +{ + if (default_config->dev) + vkms_destroy(default_config); + + kfree(default_config); }
module_init(vkms_init); diff --git a/drivers/gpu/drm/vkms/vkms_drv.h b/drivers/gpu/drm/vkms/vkms_drv.h index 5ed91ff08cb3..caa1fafb6ca7 100644 --- a/drivers/gpu/drm/vkms/vkms_drv.h +++ b/drivers/gpu/drm/vkms/vkms_drv.h @@ -19,8 +19,6 @@ #define XRES_MAX 8192 #define YRES_MAX 8192
-extern bool enable_cursor; - struct vkms_composer { struct drm_framebuffer fb; struct drm_rect src, dst; @@ -82,10 +80,18 @@ struct vkms_output { spinlock_t composer_lock; };
+struct vkms_device; +struct vkms_config { + bool writeback; + bool cursor; + /* only set when instantiated */ + struct vkms_device *dev; +}; struct vkms_device { struct drm_device drm; struct platform_device *platform; struct vkms_output output; + const struct vkms_config *config; };
#define drm_crtc_to_vkms_output(target) \ @@ -123,4 +129,4 @@ void vkms_set_composer(struct vkms_output *out, bool enabled); /* Writeback */ int vkms_enable_writeback_connector(struct vkms_device *vkmsdev);
-#endif /* _VKMS_DRV_H_ */ +#endif /* _VKMS_DRV_H_ */ \ No newline at end of file diff --git a/drivers/gpu/drm/vkms/vkms_output.c b/drivers/gpu/drm/vkms/vkms_output.c index 4a1848b0318f..f5f6f15c362c 100644 --- a/drivers/gpu/drm/vkms/vkms_output.c +++ b/drivers/gpu/drm/vkms/vkms_output.c @@ -41,12 +41,13 @@ int vkms_output_init(struct vkms_device *vkmsdev, int index) struct drm_crtc *crtc = &output->crtc; struct drm_plane *primary, *cursor = NULL; int ret; + int writeback;
primary = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_PRIMARY, index); if (IS_ERR(primary)) return PTR_ERR(primary);
- if (enable_cursor) { + if (vkmsdev->config->cursor) { cursor = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_CURSOR, index); if (IS_ERR(cursor)) { ret = PTR_ERR(cursor); @@ -80,9 +81,11 @@ int vkms_output_init(struct vkms_device *vkmsdev, int index) goto err_attach; }
- ret = vkms_enable_writeback_connector(vkmsdev); - if (ret) - DRM_ERROR("Failed to init writeback connector\n"); + if (vkmsdev->config->writeback) { + writeback = vkms_enable_writeback_connector(vkmsdev); + if (writeback) + DRM_ERROR("Failed to init writeback connector\n"); + }
drm_mode_config_reset(dev);
@@ -98,7 +101,7 @@ int vkms_output_init(struct vkms_device *vkmsdev, int index) drm_crtc_cleanup(crtc);
err_crtc: - if (enable_cursor) + if (vkmsdev->config->cursor) drm_plane_cleanup(cursor);
err_cursor:
On 01/05, Sumera Priyadarsini wrote:
Even though the limit is now 100 characteres, I consider 'enable_writeback' enough here. I think removing this _connector suffix doesn't affect the undestanding and also save some space to avoid break lines in the future
Still in time, checkpatch complains here: CHECK: Please use a blank line after function/struct/union/enum declarations
I would recommend the changes related to module options come in a second patch of a patch series. I mean, a patchset with (1) decoupling configs from device and (2) conversions.
besides that, lgtm.
but maybe Daniel has additional/other recommendations to share...
dri-devel@lists.freedesktop.org
-
Melissa Wen -
Sumera Priyadarsini