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path: root/drivers/gpu/drm/ast/ast_main.c
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Diffstat (limited to 'drivers/gpu/drm/ast/ast_main.c')
-rw-r--r--drivers/gpu/drm/ast/ast_main.c306
1 files changed, 0 insertions, 306 deletions
diff --git a/drivers/gpu/drm/ast/ast_main.c b/drivers/gpu/drm/ast/ast_main.c
deleted file mode 100644
index 0637abb70361..000000000000
--- a/drivers/gpu/drm/ast/ast_main.c
+++ /dev/null
@@ -1,306 +0,0 @@
-/*
- * Copyright 2012 Red Hat Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sub license, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
- * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
- * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
- * USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- *
- */
-/*
- * Authors: Dave Airlie <airlied@redhat.com>
- */
-
-#include <linux/of.h>
-#include <linux/pci.h>
-
-#include <drm/drm_atomic_helper.h>
-#include <drm/drm_drv.h>
-#include <drm/drm_gem.h>
-#include <drm/drm_managed.h>
-
-#include "ast_drv.h"
-
-static void ast_detect_widescreen(struct ast_device *ast)
-{
- u8 jreg;
-
- /* Check if we support wide screen */
- switch (AST_GEN(ast)) {
- case 1:
- ast->support_wide_screen = false;
- break;
- default:
- jreg = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xd0, 0xff);
- if (!(jreg & 0x80))
- ast->support_wide_screen = true;
- else if (jreg & 0x01)
- ast->support_wide_screen = true;
- else {
- ast->support_wide_screen = false;
- if (ast->chip == AST1300)
- ast->support_wide_screen = true;
- if (ast->chip == AST1400)
- ast->support_wide_screen = true;
- if (ast->chip == AST2510)
- ast->support_wide_screen = true;
- if (IS_AST_GEN7(ast))
- ast->support_wide_screen = true;
- }
- break;
- }
-}
-
-static void ast_detect_tx_chip(struct ast_device *ast, bool need_post)
-{
- struct drm_device *dev = &ast->base;
- u8 jreg;
-
- /* Check 3rd Tx option (digital output afaik) */
- ast->tx_chip_types |= AST_TX_NONE_BIT;
-
- /*
- * VGACRA3 Enhanced Color Mode Register, check if DVO is already
- * enabled, in that case, assume we have a SIL164 TMDS transmitter
- *
- * Don't make that assumption if we the chip wasn't enabled and
- * is at power-on reset, otherwise we'll incorrectly "detect" a
- * SIL164 when there is none.
- */
- if (!need_post) {
- jreg = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xa3, 0xff);
- if (jreg & 0x80)
- ast->tx_chip_types = AST_TX_SIL164_BIT;
- }
-
- if (IS_AST_GEN4(ast) || IS_AST_GEN5(ast) || IS_AST_GEN6(ast)) {
- /*
- * On AST GEN4+, look the configuration set by the SoC in
- * the SOC scratch register #1 bits 11:8 (interestingly marked
- * as "reserved" in the spec)
- */
- jreg = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xd1, 0xff);
- switch (jreg) {
- case 0x04:
- ast->tx_chip_types = AST_TX_SIL164_BIT;
- break;
- case 0x08:
- ast->dp501_fw_addr = drmm_kzalloc(dev, 32*1024, GFP_KERNEL);
- if (ast->dp501_fw_addr) {
- /* backup firmware */
- if (ast_backup_fw(dev, ast->dp501_fw_addr, 32*1024)) {
- drmm_kfree(dev, ast->dp501_fw_addr);
- ast->dp501_fw_addr = NULL;
- }
- }
- fallthrough;
- case 0x0c:
- ast->tx_chip_types = AST_TX_DP501_BIT;
- }
- } else if (IS_AST_GEN7(ast)) {
- if (ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xD1, TX_TYPE_MASK) ==
- ASTDP_DPMCU_TX) {
- ast->tx_chip_types = AST_TX_ASTDP_BIT;
- ast_dp_launch(&ast->base);
- }
- }
-
- /* Print stuff for diagnostic purposes */
- if (ast->tx_chip_types & AST_TX_NONE_BIT)
- drm_info(dev, "Using analog VGA\n");
- if (ast->tx_chip_types & AST_TX_SIL164_BIT)
- drm_info(dev, "Using Sil164 TMDS transmitter\n");
- if (ast->tx_chip_types & AST_TX_DP501_BIT)
- drm_info(dev, "Using DP501 DisplayPort transmitter\n");
- if (ast->tx_chip_types & AST_TX_ASTDP_BIT)
- drm_info(dev, "Using ASPEED DisplayPort transmitter\n");
-}
-
-static int ast_get_dram_info(struct drm_device *dev)
-{
- struct device_node *np = dev->dev->of_node;
- struct ast_device *ast = to_ast_device(dev);
- uint32_t mcr_cfg, mcr_scu_mpll, mcr_scu_strap;
- uint32_t denum, num, div, ref_pll, dsel;
-
- switch (ast->config_mode) {
- case ast_use_dt:
- /*
- * If some properties are missing, use reasonable
- * defaults for GEN5
- */
- if (of_property_read_u32(np, "aspeed,mcr-configuration",
- &mcr_cfg))
- mcr_cfg = 0x00000577;
- if (of_property_read_u32(np, "aspeed,mcr-scu-mpll",
- &mcr_scu_mpll))
- mcr_scu_mpll = 0x000050C0;
- if (of_property_read_u32(np, "aspeed,mcr-scu-strap",
- &mcr_scu_strap))
- mcr_scu_strap = 0;
- break;
- case ast_use_p2a:
- ast_write32(ast, 0xf004, 0x1e6e0000);
- ast_write32(ast, 0xf000, 0x1);
- mcr_cfg = ast_read32(ast, 0x10004);
- mcr_scu_mpll = ast_read32(ast, 0x10120);
- mcr_scu_strap = ast_read32(ast, 0x10170);
- break;
- case ast_use_defaults:
- default:
- ast->dram_bus_width = 16;
- ast->dram_type = AST_DRAM_1Gx16;
- if (IS_AST_GEN6(ast))
- ast->mclk = 800;
- else
- ast->mclk = 396;
- return 0;
- }
-
- if (mcr_cfg & 0x40)
- ast->dram_bus_width = 16;
- else
- ast->dram_bus_width = 32;
-
- if (IS_AST_GEN6(ast)) {
- switch (mcr_cfg & 0x03) {
- case 0:
- ast->dram_type = AST_DRAM_1Gx16;
- break;
- default:
- case 1:
- ast->dram_type = AST_DRAM_2Gx16;
- break;
- case 2:
- ast->dram_type = AST_DRAM_4Gx16;
- break;
- case 3:
- ast->dram_type = AST_DRAM_8Gx16;
- break;
- }
- } else if (IS_AST_GEN4(ast) || IS_AST_GEN5(ast)) {
- switch (mcr_cfg & 0x03) {
- case 0:
- ast->dram_type = AST_DRAM_512Mx16;
- break;
- default:
- case 1:
- ast->dram_type = AST_DRAM_1Gx16;
- break;
- case 2:
- ast->dram_type = AST_DRAM_2Gx16;
- break;
- case 3:
- ast->dram_type = AST_DRAM_4Gx16;
- break;
- }
- } else {
- switch (mcr_cfg & 0x0c) {
- case 0:
- case 4:
- ast->dram_type = AST_DRAM_512Mx16;
- break;
- case 8:
- if (mcr_cfg & 0x40)
- ast->dram_type = AST_DRAM_1Gx16;
- else
- ast->dram_type = AST_DRAM_512Mx32;
- break;
- case 0xc:
- ast->dram_type = AST_DRAM_1Gx32;
- break;
- }
- }
-
- if (mcr_scu_strap & 0x2000)
- ref_pll = 14318;
- else
- ref_pll = 12000;
-
- denum = mcr_scu_mpll & 0x1f;
- num = (mcr_scu_mpll & 0x3fe0) >> 5;
- dsel = (mcr_scu_mpll & 0xc000) >> 14;
- switch (dsel) {
- case 3:
- div = 0x4;
- break;
- case 2:
- case 1:
- div = 0x2;
- break;
- default:
- div = 0x1;
- break;
- }
- ast->mclk = ref_pll * (num + 2) / ((denum + 2) * (div * 1000));
- return 0;
-}
-
-struct drm_device *ast_device_create(struct pci_dev *pdev,
- const struct drm_driver *drv,
- enum ast_chip chip,
- enum ast_config_mode config_mode,
- void __iomem *regs,
- void __iomem *ioregs,
- bool need_post)
-{
- struct drm_device *dev;
- struct ast_device *ast;
- int ret;
-
- ast = devm_drm_dev_alloc(&pdev->dev, drv, struct ast_device, base);
- if (IS_ERR(ast))
- return ERR_CAST(ast);
- dev = &ast->base;
-
- ast->chip = chip;
- ast->config_mode = config_mode;
- ast->regs = regs;
- ast->ioregs = ioregs;
-
- ast_detect_widescreen(ast);
- ast_detect_tx_chip(ast, need_post);
-
- ret = ast_get_dram_info(dev);
- if (ret)
- return ERR_PTR(ret);
-
- drm_info(dev, "dram MCLK=%u Mhz type=%d bus_width=%d\n",
- ast->mclk, ast->dram_type, ast->dram_bus_width);
-
- if (need_post)
- ast_post_gpu(dev);
-
- ret = ast_mm_init(ast);
- if (ret)
- return ERR_PTR(ret);
-
- /* map reserved buffer */
- ast->dp501_fw_buf = NULL;
- if (ast->vram_size < pci_resource_len(pdev, 0)) {
- ast->dp501_fw_buf = pci_iomap_range(pdev, 0, ast->vram_size, 0);
- if (!ast->dp501_fw_buf)
- drm_info(dev, "failed to map reserved buffer!\n");
- }
-
- ret = ast_mode_config_init(ast);
- if (ret)
- return ERR_PTR(ret);
-
- return dev;
-}
generated by cgit (git 2.34.1) at 2025-12-22 00:46:45 +0000