1 files changed, 253 insertions, 0 deletions

diff --git a/drivers/video/via/via_utility.c b/drivers/video/via/via_utility.c
new file mode 100644
index 000000000000..d53c3d54ed8e
--- /dev/null
+++ b/drivers/video/via/via_utility.c
@@ -0,0 +1,253 @@
+/*
+ * Copyright 1998-2008 VIA Technologies, Inc. All Rights Reserved.
+ * Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved.
+
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation;
+ * either version 2, or (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTIES OR REPRESENTATIONS; without even
+ * the implied warranty of MERCHANTABILITY or FITNESS FOR
+ * A PARTICULAR PURPOSE.See the GNU General Public License
+ * for more details.
+
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#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 simultanous. */
+        /* 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;
+}
+
+int viafb_input_parameter_converter(int parameter_value)
+{
+        int result;
+
+        if (parameter_value >= 1 && parameter_value <= 9)
+                result = 1 << (parameter_value - 1);
+        else
+                result = 1;
+
+        return result;
+}