aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/video/via/via_utility.c
blob: d05ccb62b55f7774282b775cb88eb8e0dbac6a75 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
/*
 * 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 <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 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;
}