/*
* 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, 0 xd0);
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, 0 xd1);
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, 0 xa3, 0 xff);
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, 0 xd1,
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]);
}
static int ast_get_dram_info(struct ast_device *ast)
{
struct drm_device *dev = &ast->base;
struct device_node *np = dev->dev->of_node;
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 = 0 x00000577;
if (of_property_read_u32(np, "aspeed,mcr-scu-mpll" ,
&mcr_scu_mpll))
mcr_scu_mpll = 0 x000050C0;
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, 0 xf004, 0 x1e6e0000);
ast_write32(ast, 0 xf000, 0 x1);
mcr_cfg = ast_read32(ast, 0 x10004);
mcr_scu_mpll = ast_read32(ast, 0 x10120);
mcr_scu_strap = ast_read32(ast, 0 x10170);
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 & 0 x40)
ast->dram_bus_width = 16 ;
else
ast->dram_bus_width = 32 ;
if (IS_AST_GEN6(ast)) {
switch (mcr_cfg & 0 x03) {
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 & 0 x03) {
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 & 0 x0c) {
case 0 :
case 4 :
ast->dram_type = AST_DRAM_512Mx16;
break ;
case 8 :
if (mcr_cfg & 0 x40)
ast->dram_type = AST_DRAM_1Gx16;
else
ast->dram_type = AST_DRAM_512Mx32;
break ;
case 0 xc:
ast->dram_type = AST_DRAM_1Gx32;
break ;
}
}
if (mcr_scu_strap & 0 x2000)
ref_pll = 14318 ;
else
ref_pll = 12000 ;
denum = mcr_scu_mpll & 0 x1f;
num = (mcr_scu_mpll & 0 x3fe0) >> 5 ;
dsel = (mcr_scu_mpll & 0 xc000) >> 14 ;
switch (dsel) {
case 3 :
div = 0 x4;
break ;
case 2 :
case 1 :
div = 0 x2;
break ;
default :
div = 0 x1;
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;
ret = ast_get_dram_info(ast);
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);
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;
}
Messung V0.5 in Prozent C=89 H=96 G=92
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