With MDP5 as a new device, we need to do less for MDP when initializing modeset after all the components are bound.
Create mdp5_kms_init2/destroy2 funcs that inits modeset. These will eventually replace the older kms_init/destroy funcs. In the new kms_init2, the platform_device used is the one corresponding to the new MDP5 platform_device. The new change here is that the irq is now retrieved using irq_of_parse_and_map(), since MDP5 is a child interrupt of the MDSS interrupt controller. Signed-off-by: Archit Taneja <architt at codeaurora.org> --- drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c | 115 ++++++++++++++++++++++++++++++++ drivers/gpu/drm/msm/msm_kms.h | 1 + 2 files changed, 116 insertions(+) diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c index fcb1bf4..9f69924 100644 --- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c +++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c @@ -16,6 +16,7 @@ * this program. If not, see <http://www.gnu.org/licenses/>. */ +#include <linux/of_irq.h> #include "msm_drv.h" #include "msm_mmu.h" @@ -133,6 +134,17 @@ static void mdp5_kms_destroy(struct msm_kms *kms) kfree(mdp5_kms); } +static void mdp5_kms_destroy2(struct msm_kms *kms) +{ + struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms)); + struct msm_mmu *mmu = mdp5_kms->mmu; + + if (mmu) { + mmu->funcs->detach(mmu, iommu_ports, ARRAY_SIZE(iommu_ports)); + mmu->funcs->destroy(mmu); + } +} + static const struct mdp_kms_funcs kms_funcs = { .base = { .hw_init = mdp5_hw_init, @@ -776,6 +788,109 @@ fail: return ERR_PTR(ret); } +struct msm_kms *mdp5_kms_init2(struct drm_device *dev) +{ + struct msm_drm_private *priv = dev->dev_private; + struct platform_device *pdev; + struct mdp5_kms *mdp5_kms; + struct mdp5_cfg *config; + struct msm_kms *kms; + struct msm_mmu *mmu; + int irq, i, ret; + + /* priv->kms would have been populated by the MDP5 driver */ + kms = priv->kms; + if (!kms) + return NULL; + + mdp5_kms = to_mdp5_kms(to_mdp_kms(kms)); + + mdp_kms_init(&mdp5_kms->base, &kms_funcs); + + pdev = mdp5_kms->pdev; + + irq = irq_of_parse_and_map(pdev->dev.of_node, 0); + if (irq < 0) { + ret = irq; + dev_err(&pdev->dev, "failed to get irq: %d\n", ret); + goto fail; + } + + kms->irq = irq; + + config = mdp5_cfg_get_config(mdp5_kms->cfg); + + /* make sure things are off before attaching iommu (bootloader could + * have left things on, in which case we'll start getting faults if + * we don't disable): + */ + mdp5_enable(mdp5_kms); + for (i = 0; i < MDP5_INTF_NUM_MAX; i++) { + if (mdp5_cfg_intf_is_virtual(config->hw->intf.connect[i]) || + !config->hw->intf.base[i]) + continue; + mdp5_write(mdp5_kms, REG_MDP5_INTF_TIMING_ENGINE_EN(i), 0); + + mdp5_write(mdp5_kms, REG_MDP5_INTF_FRAME_LINE_COUNT_EN(i), 0x3); + } + mdp5_disable(mdp5_kms); + mdelay(16); + + if (config->platform.iommu) { + mmu = msm_iommu_new(&pdev->dev, config->platform.iommu); + if (IS_ERR(mmu)) { + ret = PTR_ERR(mmu); + dev_err(&pdev->dev, "failed to init iommu: %d\n", ret); + iommu_domain_free(config->platform.iommu); + goto fail; + } + + ret = mmu->funcs->attach(mmu, iommu_ports, + ARRAY_SIZE(iommu_ports)); + if (ret) { + dev_err(&pdev->dev, "failed to attach iommu: %d\n", + ret); + mmu->funcs->destroy(mmu); + goto fail; + } + } else { + dev_info(&pdev->dev, + "no iommu, fallback to phys contig buffers for scanout\n"); + mmu = NULL; + } + mdp5_kms->mmu = mmu; + + mdp5_kms->id = msm_register_mmu(dev, mmu); + if (mdp5_kms->id < 0) { + ret = mdp5_kms->id; + dev_err(&pdev->dev, "failed to register mdp5 iommu: %d\n", ret); + goto fail; + } + + ret = modeset_init(mdp5_kms); + if (ret) { + dev_err(&pdev->dev, "modeset_init failed: %d\n", ret); + goto fail; + } + + dev->mode_config.min_width = 0; + dev->mode_config.min_height = 0; + dev->mode_config.max_width = config->hw->lm.max_width; + dev->mode_config.max_height = config->hw->lm.max_height; + + dev->driver->get_vblank_timestamp = mdp5_get_vblank_timestamp; + dev->driver->get_scanout_position = mdp5_get_scanoutpos; + dev->driver->get_vblank_counter = mdp5_get_vblank_counter; + dev->max_vblank_count = 0xffffffff; + dev->vblank_disable_immediate = true; + + return kms; +fail: + if (kms) + mdp5_kms_destroy2(kms); + return ERR_PTR(ret); +} + static void mdp5_destroy(struct platform_device *pdev) { struct mdp5_kms *mdp5_kms = platform_get_drvdata(pdev); diff --git a/drivers/gpu/drm/msm/msm_kms.h b/drivers/gpu/drm/msm/msm_kms.h index 40e41e5..13f893d 100644 --- a/drivers/gpu/drm/msm/msm_kms.h +++ b/drivers/gpu/drm/msm/msm_kms.h @@ -73,6 +73,7 @@ static inline void msm_kms_init(struct msm_kms *kms, struct msm_kms *mdp4_kms_init(struct drm_device *dev); struct msm_kms *mdp5_kms_init(struct drm_device *dev); +struct msm_kms *mdp5_kms_init2(struct drm_device *dev); int msm_mdss_init(struct drm_device *dev); void msm_mdss_destroy(struct drm_device *dev); -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, hosted by The Linux Foundation
