ast_2400.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/*
 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}