tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
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/*
27 * Authors: Dave Airlie <airlied@redhat.com>
28 */
29
30#include <linux/pci.h>
31
32#include <drm/drm_drv.h>
33#include <drm/drm_print.h>
34
35#include "ast_drv.h"
36
37static void ast_2400_detect_widescreen(struct ast_device *ast)
38{
39 if (__ast_2100_detect_wsxga_p(ast) || ast->chip == AST1400) {
40 ast->support_wsxga_p = true;
41 ast->support_fullhd = true;
42 }
43 if (__ast_2100_detect_wuxga(ast))
44 ast->support_wuxga = true;
45}
46
47static const struct ast_device_quirks ast_2400_device_quirks = {
48 .crtc_mem_req_threshold_low = 96,
49 .crtc_mem_req_threshold_high = 120,
50};
51
52struct drm_device *ast_2400_device_create(struct pci_dev *pdev,
53 const struct drm_driver *drv,
54 enum ast_chip chip,
55 enum ast_config_mode config_mode,
56 void __iomem *regs,
57 void __iomem *ioregs,
58 bool need_post)
59{
60 struct drm_device *dev;
61 struct ast_device *ast;
62 int ret;
63
64 ast = devm_drm_dev_alloc(&pdev->dev, drv, struct ast_device, base);
65 if (IS_ERR(ast))
66 return ERR_CAST(ast);
67 dev = &ast->base;
68
69 ast_device_init(ast, chip, config_mode, regs, ioregs, &ast_2400_device_quirks);
70
71 ast->dclk_table = ast_2000_dclk_table;
72
73 ast_2300_detect_tx_chip(ast);
74
75 if (need_post) {
76 ret = ast_post_gpu(ast);
77 if (ret)
78 return ERR_PTR(ret);
79 }
80
81 ret = ast_mm_init(ast);
82 if (ret)
83 return ERR_PTR(ret);
84
85 /* map reserved buffer */
86 ast->dp501_fw_buf = NULL;
87 if (ast->vram_size < pci_resource_len(pdev, 0)) {
88 ast->dp501_fw_buf = pci_iomap_range(pdev, 0, ast->vram_size, 0);
89 if (!ast->dp501_fw_buf)
90 drm_info(dev, "failed to map reserved buffer!\n");
91 }
92
93 ast_2400_detect_widescreen(ast);
94
95 ret = ast_mode_config_init(ast);
96 if (ret)
97 return ERR_PTR(ret);
98
99 return dev;
100}