ast_2600.c

  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(ast))
 83		return ERR_CAST(ast);
 84	dev = &ast->base;
 85
 86	ast_device_init(ast, chip, config_mode, regs, ioregs, &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(ret);
104
105	ret = ast_mm_init(ast);
106	if (ret)
107		return ERR_PTR(ret);
108
109	ast_2600_detect_widescreen(ast);
110
111	ret = ast_mode_config_init(ast);
112	if (ret)
113		return ERR_PTR(ret);
114
115	return dev;
116}