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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright 1998-2008 VIA Technologies, Inc. All Rights Reserved.
* Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved.
*/
#include <linux/via-core.h>
#include "global.h"
void viafb_get_device_support_state(u32 *support_state)
{
*support_state = CRT_Device;
if (viaparinfo->chip_info->tmds_chip_info.tmds_chip_name == VT1632_TMDS)
*support_state |= DVI_Device;
if (viaparinfo->chip_info->lvds_chip_info.lvds_chip_name == VT1631_LVDS)
*support_state |= LCD_Device;
}
void viafb_get_device_connect_state(u32 *connect_state)
{
bool mobile = false;
*connect_state = CRT_Device;
if (viafb_dvi_sense())
*connect_state |= DVI_Device;
viafb_lcd_get_mobile_state(&mobile);
if (mobile)
*connect_state |= LCD_Device;
}
bool viafb_lcd_get_support_expand_state(u32 xres, u32 yres)
{
unsigned int support_state = 0;
switch (viafb_lcd_panel_id) {
case LCD_PANEL_ID0_640X480:
if ((xres < 640) && (yres < 480))
support_state = true;
break;
case LCD_PANEL_ID1_800X600:
if ((xres < 800) && (yres < 600))
support_state = true;
break;
case LCD_PANEL_ID2_1024X768:
if ((xres < 1024) && (yres < 768))
support_state = true;
break;
case LCD_PANEL_ID3_1280X768:
if ((xres < 1280) && (yres < 768))
support_state = true;
break;
case LCD_PANEL_ID4_1280X1024:
if ((xres < 1280) && (yres < 1024))
support_state = true;
break;
case LCD_PANEL_ID5_1400X1050:
if ((xres < 1400) && (yres < 1050))
support_state = true;
break;
case LCD_PANEL_ID6_1600X1200:
if ((xres < 1600) && (yres < 1200))
support_state = true;
break;
case LCD_PANEL_ID7_1366X768:
if ((xres < 1366) && (yres < 768))
support_state = true;
break;
case LCD_PANEL_ID8_1024X600:
if ((xres < 1024) && (yres < 600))
support_state = true;
break;
case LCD_PANEL_ID9_1280X800:
if ((xres < 1280) && (yres < 800))
support_state = true;
break;
case LCD_PANEL_IDA_800X480:
if ((xres < 800) && (yres < 480))
support_state = true;
break;
case LCD_PANEL_IDB_1360X768:
if ((xres < 1360) && (yres < 768))
support_state = true;
break;
case LCD_PANEL_IDC_480X640:
if ((xres < 480) && (yres < 640))
support_state = true;
break;
default:
support_state = false;
break;
}
return support_state;
}
/*====================================================================*/
/* Gamma Function Implementation*/
/*====================================================================*/
void viafb_set_gamma_table(int bpp, unsigned int *gamma_table)
{
int i, sr1a;
int active_device_amount = 0;
int device_status = viafb_DeviceStatus;
for (i = 0; i < sizeof(viafb_DeviceStatus) * 8; i++) {
if (device_status & 1)
active_device_amount++;
device_status >>= 1;
}
/* 8 bpp mode can't adjust gamma */
if (bpp == 8)
return ;
/* Enable Gamma */
switch (viaparinfo->chip_info->gfx_chip_name) {
case UNICHROME_CLE266:
case UNICHROME_K400:
viafb_write_reg_mask(SR16, VIASR, 0x80, BIT7);
break;
case UNICHROME_K800:
case UNICHROME_PM800:
case UNICHROME_CN700:
case UNICHROME_CX700:
case UNICHROME_K8M890:
case UNICHROME_P4M890:
case UNICHROME_P4M900:
viafb_write_reg_mask(CR33, VIACR, 0x80, BIT7);
break;
}
sr1a = (unsigned int)viafb_read_reg(VIASR, SR1A);
viafb_write_reg_mask(SR1A, VIASR, 0x0, BIT0);
/* Fill IGA1 Gamma Table */
outb(0, LUT_INDEX_WRITE);
for (i = 0; i < 256; i++) {
outb(gamma_table[i] >> 16, LUT_DATA);
outb(gamma_table[i] >> 8 & 0xFF, LUT_DATA);
outb(gamma_table[i] & 0xFF, LUT_DATA);
}
/* If adjust Gamma value in SAMM, fill IGA1,
IGA2 Gamma table simultaneous. */
/* Switch to IGA2 Gamma Table */
if ((active_device_amount > 1) &&
!((viaparinfo->chip_info->gfx_chip_name ==
UNICHROME_CLE266) &&
(viaparinfo->chip_info->gfx_chip_revision < 15))) {
viafb_write_reg_mask(SR1A, VIASR, 0x01, BIT0);
viafb_write_reg_mask(CR6A, VIACR, 0x02, BIT1);
/* Fill IGA2 Gamma Table */
outb(0, LUT_INDEX_WRITE);
for (i = 0; i < 256; i++) {
outb(gamma_table[i] >> 16, LUT_DATA);
outb(gamma_table[i] >> 8 & 0xFF, LUT_DATA);
outb(gamma_table[i] & 0xFF, LUT_DATA);
}
}
viafb_write_reg(SR1A, VIASR, sr1a);
}
void viafb_get_gamma_table(unsigned int *gamma_table)
{
unsigned char color_r, color_g, color_b;
unsigned char sr1a = 0;
int i;
/* Enable Gamma */
switch (viaparinfo->chip_info->gfx_chip_name) {
case UNICHROME_CLE266:
case UNICHROME_K400:
viafb_write_reg_mask(SR16, VIASR, 0x80, BIT7);
break;
case UNICHROME_K800:
case UNICHROME_PM800:
case UNICHROME_CN700:
case UNICHROME_CX700:
case UNICHROME_K8M890:
case UNICHROME_P4M890:
case UNICHROME_P4M900:
viafb_write_reg_mask(CR33, VIACR, 0x80, BIT7);
break;
}
sr1a = viafb_read_reg(VIASR, SR1A);
viafb_write_reg_mask(SR1A, VIASR, 0x0, BIT0);
/* Reading gamma table to get color value */
outb(0, LUT_INDEX_READ);
for (i = 0; i < 256; i++) {
color_r = inb(LUT_DATA);
color_g = inb(LUT_DATA);
color_b = inb(LUT_DATA);
gamma_table[i] =
((((u32) color_r) << 16) |
(((u16) color_g) << 8)) | color_b;
}
viafb_write_reg(SR1A, VIASR, sr1a);
}
void viafb_get_gamma_support_state(int bpp, unsigned int *support_state)
{
if (bpp == 8)
*support_state = None_Device;
else
*support_state = CRT_Device | DVI_Device | LCD_Device;
}
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