269 lines
7.4 KiB
C
269 lines
7.4 KiB
C
/*
|
|
* 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"
|
|
|
|
/* Try to detect WSXGA+ on Gen2+ */
|
|
static bool __ast_2100_detect_wsxga_p(struct ast_device *ast)
|
|
{
|
|
u8 vgacrd0 = ast_get_index_reg(ast, AST_IO_VGACRI, 0xd0);
|
|
|
|
if (!(vgacrd0 & AST_IO_VGACRD0_VRAM_INIT_BY_BMC))
|
|
return true;
|
|
if (vgacrd0 & AST_IO_VGACRD0_IKVM_WIDESCREEN)
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
/* Try to detect WUXGA on Gen2+ */
|
|
static bool __ast_2100_detect_wuxga(struct ast_device *ast)
|
|
{
|
|
u8 vgacrd1;
|
|
|
|
if (ast->support_fullhd) {
|
|
vgacrd1 = ast_get_index_reg(ast, AST_IO_VGACRI, 0xd1);
|
|
if (!(vgacrd1 & AST_IO_VGACRD1_SUPPORTS_WUXGA))
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static void ast_detect_widescreen(struct ast_device *ast)
|
|
{
|
|
ast->support_wsxga_p = false;
|
|
ast->support_fullhd = false;
|
|
ast->support_wuxga = false;
|
|
|
|
if (AST_GEN(ast) >= 7) {
|
|
ast->support_wsxga_p = true;
|
|
ast->support_fullhd = true;
|
|
if (__ast_2100_detect_wuxga(ast))
|
|
ast->support_wuxga = true;
|
|
} else if (AST_GEN(ast) >= 6) {
|
|
if (__ast_2100_detect_wsxga_p(ast))
|
|
ast->support_wsxga_p = true;
|
|
else if (ast->chip == AST2510)
|
|
ast->support_wsxga_p = true;
|
|
if (ast->support_wsxga_p)
|
|
ast->support_fullhd = true;
|
|
if (__ast_2100_detect_wuxga(ast))
|
|
ast->support_wuxga = true;
|
|
} else if (AST_GEN(ast) >= 5) {
|
|
if (__ast_2100_detect_wsxga_p(ast))
|
|
ast->support_wsxga_p = true;
|
|
else if (ast->chip == AST1400)
|
|
ast->support_wsxga_p = true;
|
|
if (ast->support_wsxga_p)
|
|
ast->support_fullhd = true;
|
|
if (__ast_2100_detect_wuxga(ast))
|
|
ast->support_wuxga = true;
|
|
} else if (AST_GEN(ast) >= 4) {
|
|
if (__ast_2100_detect_wsxga_p(ast))
|
|
ast->support_wsxga_p = true;
|
|
else if (ast->chip == AST1300)
|
|
ast->support_wsxga_p = true;
|
|
if (ast->support_wsxga_p)
|
|
ast->support_fullhd = true;
|
|
if (__ast_2100_detect_wuxga(ast))
|
|
ast->support_wuxga = true;
|
|
} else if (AST_GEN(ast) >= 3) {
|
|
if (__ast_2100_detect_wsxga_p(ast))
|
|
ast->support_wsxga_p = true;
|
|
if (ast->support_wsxga_p) {
|
|
if (ast->chip == AST2200)
|
|
ast->support_fullhd = true;
|
|
}
|
|
if (__ast_2100_detect_wuxga(ast))
|
|
ast->support_wuxga = true;
|
|
} else if (AST_GEN(ast) >= 2) {
|
|
if (__ast_2100_detect_wsxga_p(ast))
|
|
ast->support_wsxga_p = true;
|
|
if (ast->support_wsxga_p) {
|
|
if (ast->chip == AST2100)
|
|
ast->support_fullhd = true;
|
|
}
|
|
if (__ast_2100_detect_wuxga(ast))
|
|
ast->support_wuxga = true;
|
|
}
|
|
}
|
|
|
|
static void ast_detect_tx_chip(struct ast_device *ast, bool need_post)
|
|
{
|
|
static const char * const info_str[] = {
|
|
"analog VGA",
|
|
"Sil164 TMDS transmitter",
|
|
"DP501 DisplayPort transmitter",
|
|
"ASPEED DisplayPort transmitter",
|
|
};
|
|
|
|
struct drm_device *dev = &ast->base;
|
|
u8 vgacra3, vgacrd1;
|
|
|
|
/* Check 3rd Tx option (digital output afaik) */
|
|
ast->tx_chip = AST_TX_NONE;
|
|
|
|
if (AST_GEN(ast) <= 3) {
|
|
/*
|
|
* 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) {
|
|
vgacra3 = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xa3, 0xff);
|
|
if (vgacra3 & AST_IO_VGACRA3_DVO_ENABLED)
|
|
ast->tx_chip = AST_TX_SIL164;
|
|
}
|
|
} else {
|
|
/*
|
|
* On AST GEN4+, look at the configuration set by the SoC in
|
|
* the SOC scratch register #1 bits 11:8 (interestingly marked
|
|
* as "reserved" in the spec)
|
|
*/
|
|
vgacrd1 = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xd1,
|
|
AST_IO_VGACRD1_TX_TYPE_MASK);
|
|
switch (vgacrd1) {
|
|
/*
|
|
* GEN4 to GEN6
|
|
*/
|
|
case AST_IO_VGACRD1_TX_SIL164_VBIOS:
|
|
ast->tx_chip = AST_TX_SIL164;
|
|
break;
|
|
case AST_IO_VGACRD1_TX_DP501_VBIOS:
|
|
ast->dp501_fw_addr = drmm_kzalloc(dev, 32*1024, GFP_KERNEL);
|
|
if (ast->dp501_fw_addr) {
|
|
/* backup firmware */
|
|
if (ast_backup_fw(ast, ast->dp501_fw_addr, 32*1024)) {
|
|
drmm_kfree(dev, ast->dp501_fw_addr);
|
|
ast->dp501_fw_addr = NULL;
|
|
}
|
|
}
|
|
fallthrough;
|
|
case AST_IO_VGACRD1_TX_FW_EMBEDDED_FW:
|
|
ast->tx_chip = AST_TX_DP501;
|
|
break;
|
|
/*
|
|
* GEN7+
|
|
*/
|
|
case AST_IO_VGACRD1_TX_ASTDP:
|
|
ast->tx_chip = AST_TX_ASTDP;
|
|
break;
|
|
/*
|
|
* Several of the listed TX chips are not explicitly supported
|
|
* by the ast driver. If these exist in real-world devices, they
|
|
* are most likely reported as VGA or SIL164 outputs. We warn here
|
|
* to get bug reports for these devices. If none come in for some
|
|
* time, we can begin to fail device probing on these values.
|
|
*/
|
|
case AST_IO_VGACRD1_TX_ITE66121_VBIOS:
|
|
drm_warn(dev, "ITE IT66121 detected, 0x%x, Gen%lu\n",
|
|
vgacrd1, AST_GEN(ast));
|
|
break;
|
|
case AST_IO_VGACRD1_TX_CH7003_VBIOS:
|
|
drm_warn(dev, "Chrontel CH7003 detected, 0x%x, Gen%lu\n",
|
|
vgacrd1, AST_GEN(ast));
|
|
break;
|
|
case AST_IO_VGACRD1_TX_ANX9807_VBIOS:
|
|
drm_warn(dev, "Analogix ANX9807 detected, 0x%x, Gen%lu\n",
|
|
vgacrd1, AST_GEN(ast));
|
|
break;
|
|
}
|
|
}
|
|
|
|
drm_info(dev, "Using %s\n", info_str[ast->tx_chip]);
|
|
}
|
|
|
|
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_tx_chip(ast, need_post);
|
|
switch (ast->tx_chip) {
|
|
case AST_TX_ASTDP:
|
|
ret = ast_post_gpu(ast);
|
|
break;
|
|
default:
|
|
ret = 0;
|
|
if (need_post)
|
|
ret = ast_post_gpu(ast);
|
|
break;
|
|
}
|
|
if (ret)
|
|
return ERR_PTR(ret);
|
|
|
|
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");
|
|
}
|
|
|
|
ast_detect_widescreen(ast);
|
|
|
|
ret = ast_mode_config_init(ast);
|
|
if (ret)
|
|
return ERR_PTR(ret);
|
|
|
|
return dev;
|
|
}
|