1 // SPDX-License-Identifier: GPL-2.0-only 2 /* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved. 3 */ 4 5 #include <linux/iopoll.h> 6 7 #include <drm/drm_managed.h> 8 9 #include "dpu_hw_mdss.h" 10 #include "dpu_hwio.h" 11 #include "dpu_hw_catalog.h" 12 #include "dpu_hw_merge3d.h" 13 #include "dpu_kms.h" 14 #include "dpu_trace.h" 15 16 #define MERGE_3D_MUX 0x000 17 #define MERGE_3D_MODE 0x004 18 19 static void dpu_hw_merge_3d_setup_3d_mode(struct dpu_hw_merge_3d *merge_3d, 20 enum dpu_3d_blend_mode mode_3d) 21 { 22 struct dpu_hw_blk_reg_map *c; 23 u32 data; 24 25 26 c = &merge_3d->hw; 27 if (mode_3d == BLEND_3D_NONE) { 28 DPU_REG_WRITE(c, MERGE_3D_MODE, 0); 29 DPU_REG_WRITE(c, MERGE_3D_MUX, 0); 30 } else { 31 data = BIT(0) | ((mode_3d - 1) << 1); 32 DPU_REG_WRITE(c, MERGE_3D_MODE, data); 33 } 34 } 35 36 static void _setup_merge_3d_ops(struct dpu_hw_merge_3d *c) 37 { 38 c->ops.setup_3d_mode = dpu_hw_merge_3d_setup_3d_mode; 39 }; 40 41 /** 42 * dpu_hw_merge_3d_init() - Initializes the merge_3d driver for the passed 43 * merge3d catalog entry. 44 * @dev: Corresponding device for devres management 45 * @cfg: Pingpong catalog entry for which driver object is required 46 * @addr: Mapped register io address of MDP 47 * Return: Error code or allocated dpu_hw_merge_3d context 48 */ 49 struct dpu_hw_merge_3d *dpu_hw_merge_3d_init(struct drm_device *dev, 50 const struct dpu_merge_3d_cfg *cfg, 51 void __iomem *addr) 52 { 53 struct dpu_hw_merge_3d *c; 54 55 c = drmm_kzalloc(dev, sizeof(*c), GFP_KERNEL); 56 if (!c) 57 return ERR_PTR(-ENOMEM); 58 59 c->hw.blk_addr = addr + cfg->base; 60 c->hw.log_mask = DPU_DBG_MASK_PINGPONG; 61 62 c->idx = cfg->id; 63 c->caps = cfg; 64 _setup_merge_3d_ops(c); 65 66 return c; 67 } 68