dpu_hw_merge3d.c

 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
19static 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
36static 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 */
49struct 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}