1// SPDX-License-Identifier: MIT
2/*
3 * Copyright 2012 Red Hat Inc.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sub license, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
16 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
17 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
18 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
19 * USE OR OTHER DEALINGS IN THE SOFTWARE.
20 *
21 * The above copyright notice and this permission notice (including the
22 * next paragraph) shall be included in all copies or substantial portions
23 * of the Software.
24 */
25/*
26 * Authors: Dave Airlie <airlied@redhat.com>
27 */
28
29#include <linux/pci.h>
30
31#include <drm/drm_drv.h>
32
33#include "ast_drv.h"
34#include "ast_post.h"
35
36/*
37 * POST
38 */
39
40int ast_2600_post(struct ast_device *ast)
41{
42 ast_2300_set_def_ext_reg(ast);
43
44 if (ast->tx_chip == AST_TX_ASTDP)
45 return ast_dp_launch(ast);
46
47 return 0;
48}
49
50/*
51 * Device initialization
52 */
53
54static void ast_2600_detect_widescreen(struct ast_device *ast)
55{
56 ast->support_wsxga_p = true;
57 ast->support_fullhd = true;
58 if (__ast_2100_detect_wuxga(ast))
59 ast->support_wuxga = true;
60}
61
62static const struct ast_device_quirks ast_2600_device_quirks = {
63 .crtc_mem_req_threshold_low = 160,
64 .crtc_mem_req_threshold_high = 224,
65 .crtc_hsync_precatch_needed = true,
66 .crtc_hsync_add4_needed = true,
67};
68
69struct drm_device *ast_2600_device_create(struct pci_dev *pdev,
70 const struct drm_driver *drv,
71 enum ast_chip chip,
72 enum ast_config_mode config_mode,
73 void __iomem *regs,
74 void __iomem *ioregs,
75 bool need_post)
76{
77 struct drm_device *dev;
78 struct ast_device *ast;
79 int ret;
80
81 ast = devm_drm_dev_alloc(&pdev->dev, drv, struct ast_device, base);
82 if (IS_ERR(ptr: ast))
83 return ERR_CAST(ptr: ast);
84 dev = &ast->base;
85
86 ast_device_init(ast, chip, config_mode, regs, ioregs, quirks: &ast_2600_device_quirks);
87
88 ast->dclk_table = ast_2500_dclk_table;
89
90 ast_2300_detect_tx_chip(ast);
91
92 switch (ast->tx_chip) {
93 case AST_TX_ASTDP:
94 ret = ast_post_gpu(ast);
95 break;
96 default:
97 ret = 0;
98 if (need_post)
99 ret = ast_post_gpu(ast);
100 break;
101 }
102 if (ret)
103 return ERR_PTR(error: ret);
104
105 ret = ast_mm_init(ast);
106 if (ret)
107 return ERR_PTR(error: ret);
108
109 ast_2600_detect_widescreen(ast);
110
111 ret = ast_mode_config_init(ast);
112 if (ret)
113 return ERR_PTR(error: ret);
114
115 return dev;
116}
117

source code of linux/drivers/gpu/drm/ast/ast_2600.c