diff options
Diffstat (limited to 'drivers/gpu/drm/mediatek/mtk_drm_drv.c')
| -rw-r--r-- | drivers/gpu/drm/mediatek/mtk_drm_drv.c | 180 |
1 files changed, 79 insertions, 101 deletions
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c index 95fdbd0fbcac..0563c6813333 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c @@ -4,25 +4,31 @@ * Author: YT SHEN <yt.shen@mediatek.com> */ -#include <drm/drmP.h> +#include <linux/component.h> +#include <linux/iommu.h> +#include <linux/module.h> +#include <linux/of_address.h> +#include <linux/of_platform.h> +#include <linux/pm_runtime.h> +#include <linux/dma-mapping.h> + #include <drm/drm_atomic.h> #include <drm/drm_atomic_helper.h> +#include <drm/drm_drv.h> #include <drm/drm_fb_helper.h> +#include <drm/drm_fourcc.h> #include <drm/drm_gem.h> #include <drm/drm_gem_cma_helper.h> +#include <drm/drm_gem_framebuffer_helper.h> #include <drm/drm_of.h> #include <drm/drm_probe_helper.h> -#include <linux/component.h> -#include <linux/iommu.h> -#include <linux/of_address.h> -#include <linux/of_platform.h> -#include <linux/pm_runtime.h> +#include <drm/drm_vblank.h> #include "mtk_drm_crtc.h" #include "mtk_drm_ddp.h" +#include "mtk_drm_ddp.h" #include "mtk_drm_ddp_comp.h" #include "mtk_drm_drv.h" -#include "mtk_drm_fb.h" #include "mtk_drm_gem.h" #define DRIVER_NAME "mediatek" @@ -31,99 +37,27 @@ #define DRIVER_MAJOR 1 #define DRIVER_MINOR 0 -static void mtk_atomic_schedule(struct mtk_drm_private *private, - struct drm_atomic_state *state) -{ - private->commit.state = state; - schedule_work(&private->commit.work); -} - -static void mtk_atomic_wait_for_fences(struct drm_atomic_state *state) -{ - struct drm_plane *plane; - struct drm_plane_state *new_plane_state; - int i; - - for_each_new_plane_in_state(state, plane, new_plane_state, i) - mtk_fb_wait(new_plane_state->fb); -} - -static void mtk_atomic_complete(struct mtk_drm_private *private, - struct drm_atomic_state *state) -{ - struct drm_device *drm = private->drm; - - mtk_atomic_wait_for_fences(state); - - /* - * Mediatek drm supports runtime PM, so plane registers cannot be - * written when their crtc is disabled. - * - * The comment for drm_atomic_helper_commit states: - * For drivers supporting runtime PM the recommended sequence is - * - * drm_atomic_helper_commit_modeset_disables(dev, state); - * drm_atomic_helper_commit_modeset_enables(dev, state); - * drm_atomic_helper_commit_planes(dev, state, - * DRM_PLANE_COMMIT_ACTIVE_ONLY); - * - * See the kerneldoc entries for these three functions for more details. - */ - drm_atomic_helper_commit_modeset_disables(drm, state); - drm_atomic_helper_commit_modeset_enables(drm, state); - drm_atomic_helper_commit_planes(drm, state, - DRM_PLANE_COMMIT_ACTIVE_ONLY); - - drm_atomic_helper_wait_for_vblanks(drm, state); - - drm_atomic_helper_cleanup_planes(drm, state); - drm_atomic_state_put(state); -} - -static void mtk_atomic_work(struct work_struct *work) -{ - struct mtk_drm_private *private = container_of(work, - struct mtk_drm_private, commit.work); - - mtk_atomic_complete(private, private->commit.state); -} +static const struct drm_mode_config_helper_funcs mtk_drm_mode_config_helpers = { + .atomic_commit_tail = drm_atomic_helper_commit_tail_rpm, +}; -static int mtk_atomic_commit(struct drm_device *drm, - struct drm_atomic_state *state, - bool async) +static struct drm_framebuffer * +mtk_drm_mode_fb_create(struct drm_device *dev, + struct drm_file *file, + const struct drm_mode_fb_cmd2 *cmd) { - struct mtk_drm_private *private = drm->dev_private; - int ret; - - ret = drm_atomic_helper_prepare_planes(drm, state); - if (ret) - return ret; + const struct drm_format_info *info = drm_get_format_info(dev, cmd); - mutex_lock(&private->commit.lock); - flush_work(&private->commit.work); - - ret = drm_atomic_helper_swap_state(state, true); - if (ret) { - mutex_unlock(&private->commit.lock); - drm_atomic_helper_cleanup_planes(drm, state); - return ret; - } + if (info->num_planes != 1) + return ERR_PTR(-EINVAL); - drm_atomic_state_get(state); - if (async) - mtk_atomic_schedule(private, state); - else - mtk_atomic_complete(private, state); - - mutex_unlock(&private->commit.lock); - - return 0; + return drm_gem_fb_create(dev, file, cmd); } static const struct drm_mode_config_funcs mtk_drm_mode_config_funcs = { .fb_create = mtk_drm_mode_fb_create, .atomic_check = drm_atomic_helper_check, - .atomic_commit = mtk_atomic_commit, + .atomic_commit = drm_atomic_helper_commit, }; static const enum mtk_ddp_comp_id mt2701_mtk_ddp_main[] = { @@ -213,6 +147,7 @@ static int mtk_drm_kms_init(struct drm_device *drm) struct mtk_drm_private *private = drm->dev_private; struct platform_device *pdev; struct device_node *np; + struct device *dma_dev; int ret; if (!iommu_present(&platform_bus_type)) @@ -240,6 +175,7 @@ static int mtk_drm_kms_init(struct drm_device *drm) drm->mode_config.max_width = 4096; drm->mode_config.max_height = 4096; drm->mode_config.funcs = &mtk_drm_mode_config_funcs; + drm->mode_config.helper_private = &mtk_drm_mode_config_helpers; ret = component_bind_all(drm->dev, drm); if (ret) @@ -275,7 +211,29 @@ static int mtk_drm_kms_init(struct drm_device *drm) goto err_component_unbind; } - private->dma_dev = &pdev->dev; + dma_dev = &pdev->dev; + private->dma_dev = dma_dev; + + /* + * Configure the DMA segment size to make sure we get contiguous IOVA + * when importing PRIME buffers. + */ + if (!dma_dev->dma_parms) { + private->dma_parms_allocated = true; + dma_dev->dma_parms = + devm_kzalloc(drm->dev, sizeof(*dma_dev->dma_parms), + GFP_KERNEL); + } + if (!dma_dev->dma_parms) { + ret = -ENOMEM; + goto err_component_unbind; + } + + ret = dma_set_max_seg_size(dma_dev, (unsigned int)DMA_BIT_MASK(32)); + if (ret) { + dev_err(dma_dev, "Failed to set DMA segment size\n"); + goto err_unset_dma_parms; + } /* * We don't use the drm_irq_install() helpers provided by the DRM @@ -285,13 +243,16 @@ static int mtk_drm_kms_init(struct drm_device *drm) drm->irq_enabled = true; ret = drm_vblank_init(drm, MAX_CRTC); if (ret < 0) - goto err_component_unbind; + goto err_unset_dma_parms; drm_kms_helper_poll_init(drm); drm_mode_config_reset(drm); return 0; +err_unset_dma_parms: + if (private->dma_parms_allocated) + dma_dev->dma_parms = NULL; err_component_unbind: component_unbind_all(drm->dev, drm); err_config_cleanup: @@ -302,9 +263,14 @@ err_config_cleanup: static void mtk_drm_kms_deinit(struct drm_device *drm) { + struct mtk_drm_private *private = drm->dev_private; + drm_kms_helper_poll_fini(drm); drm_atomic_helper_shutdown(drm); + if (private->dma_parms_allocated) + private->dma_dev->dma_parms = NULL; + component_unbind_all(drm->dev, drm); drm_mode_config_cleanup(drm); } @@ -320,9 +286,20 @@ static const struct file_operations mtk_drm_fops = { .compat_ioctl = drm_compat_ioctl, }; +/* + * We need to override this because the device used to import the memory is + * not dev->dev, as drm_gem_prime_import() expects. + */ +struct drm_gem_object *mtk_drm_gem_prime_import(struct drm_device *dev, + struct dma_buf *dma_buf) +{ + struct mtk_drm_private *private = dev->dev_private; + + return drm_gem_prime_import_dev(dev, dma_buf, private->dma_dev); +} + static struct drm_driver mtk_drm_driver = { - .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME | - DRIVER_ATOMIC, + .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_ATOMIC, .gem_free_object_unlocked = mtk_drm_gem_free_object, .gem_vm_ops = &drm_gem_cma_vm_ops, @@ -330,8 +307,7 @@ static struct drm_driver mtk_drm_driver = { .prime_handle_to_fd = drm_gem_prime_handle_to_fd, .prime_fd_to_handle = drm_gem_prime_fd_to_handle, - .gem_prime_export = drm_gem_prime_export, - .gem_prime_import = drm_gem_prime_import, + .gem_prime_import = mtk_drm_gem_prime_import, .gem_prime_get_sg_table = mtk_gem_prime_get_sg_table, .gem_prime_import_sg_table = mtk_gem_prime_import_sg_table, .gem_prime_mmap = mtk_drm_gem_mmap_buf, @@ -459,8 +435,6 @@ static int mtk_drm_probe(struct platform_device *pdev) if (!private) return -ENOMEM; - mutex_init(&private->commit.lock); - INIT_WORK(&private->commit.work, mtk_atomic_work); private->data = of_device_get_match_data(dev); mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); @@ -511,6 +485,7 @@ static int mtk_drm_probe(struct platform_device *pdev) */ if (comp_type == MTK_DISP_COLOR || comp_type == MTK_DISP_OVL || + comp_type == MTK_DISP_OVL_2L || comp_type == MTK_DISP_RDMA || comp_type == MTK_DSI || comp_type == MTK_DPI) { @@ -524,12 +499,15 @@ static int mtk_drm_probe(struct platform_device *pdev) comp = devm_kzalloc(dev, sizeof(*comp), GFP_KERNEL); if (!comp) { ret = -ENOMEM; + of_node_put(node); goto err_node; } ret = mtk_ddp_comp_init(dev, node, comp, comp_id, NULL); - if (ret) + if (ret) { + of_node_put(node); goto err_node; + } private->ddp_comp[comp_id] = comp; } @@ -630,8 +608,8 @@ static struct platform_driver * const mtk_drm_drivers[] = { &mtk_disp_rdma_driver, &mtk_dpi_driver, &mtk_drm_platform_driver, - &mtk_dsi_driver, &mtk_mipi_tx_driver, + &mtk_dsi_driver, }; static int __init mtk_drm_init(void) |
