viafb: via_utility.c, via_utility.h, vt1636.c, vt1636.h

via_utility.c, via_utility.h: support user mode application with
additional information vt1636.c, vt1636.h: setting for chip vt1636

Signed-off-by: Joseph Chan <josephchan@via.com.tw>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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;
+}