1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * Copyright 1998-2008 VIA Technologies, Inc. All Rights Reserved. |
4 | * Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved. |
5 | |
6 | */ |
7 | |
8 | #include <linux/via-core.h> |
9 | #include "global.h" |
10 | |
11 | void viafb_get_device_support_state(u32 *support_state) |
12 | { |
13 | *support_state = CRT_Device; |
14 | |
15 | if (viaparinfo->chip_info->tmds_chip_info.tmds_chip_name == VT1632_TMDS) |
16 | *support_state |= DVI_Device; |
17 | |
18 | if (viaparinfo->chip_info->lvds_chip_info.lvds_chip_name == VT1631_LVDS) |
19 | *support_state |= LCD_Device; |
20 | } |
21 | |
22 | void viafb_get_device_connect_state(u32 *connect_state) |
23 | { |
24 | bool mobile = false; |
25 | |
26 | *connect_state = CRT_Device; |
27 | |
28 | if (viafb_dvi_sense()) |
29 | *connect_state |= DVI_Device; |
30 | |
31 | viafb_lcd_get_mobile_state(mobile: &mobile); |
32 | if (mobile) |
33 | *connect_state |= LCD_Device; |
34 | } |
35 | |
36 | bool viafb_lcd_get_support_expand_state(u32 xres, u32 yres) |
37 | { |
38 | unsigned int support_state = 0; |
39 | |
40 | switch (viafb_lcd_panel_id) { |
41 | case LCD_PANEL_ID0_640X480: |
42 | if ((xres < 640) && (yres < 480)) |
43 | support_state = true; |
44 | break; |
45 | |
46 | case LCD_PANEL_ID1_800X600: |
47 | if ((xres < 800) && (yres < 600)) |
48 | support_state = true; |
49 | break; |
50 | |
51 | case LCD_PANEL_ID2_1024X768: |
52 | if ((xres < 1024) && (yres < 768)) |
53 | support_state = true; |
54 | break; |
55 | |
56 | case LCD_PANEL_ID3_1280X768: |
57 | if ((xres < 1280) && (yres < 768)) |
58 | support_state = true; |
59 | break; |
60 | |
61 | case LCD_PANEL_ID4_1280X1024: |
62 | if ((xres < 1280) && (yres < 1024)) |
63 | support_state = true; |
64 | break; |
65 | |
66 | case LCD_PANEL_ID5_1400X1050: |
67 | if ((xres < 1400) && (yres < 1050)) |
68 | support_state = true; |
69 | break; |
70 | |
71 | case LCD_PANEL_ID6_1600X1200: |
72 | if ((xres < 1600) && (yres < 1200)) |
73 | support_state = true; |
74 | break; |
75 | |
76 | case LCD_PANEL_ID7_1366X768: |
77 | if ((xres < 1366) && (yres < 768)) |
78 | support_state = true; |
79 | break; |
80 | |
81 | case LCD_PANEL_ID8_1024X600: |
82 | if ((xres < 1024) && (yres < 600)) |
83 | support_state = true; |
84 | break; |
85 | |
86 | case LCD_PANEL_ID9_1280X800: |
87 | if ((xres < 1280) && (yres < 800)) |
88 | support_state = true; |
89 | break; |
90 | |
91 | case LCD_PANEL_IDA_800X480: |
92 | if ((xres < 800) && (yres < 480)) |
93 | support_state = true; |
94 | break; |
95 | |
96 | case LCD_PANEL_IDB_1360X768: |
97 | if ((xres < 1360) && (yres < 768)) |
98 | support_state = true; |
99 | break; |
100 | |
101 | case LCD_PANEL_IDC_480X640: |
102 | if ((xres < 480) && (yres < 640)) |
103 | support_state = true; |
104 | break; |
105 | |
106 | default: |
107 | support_state = false; |
108 | break; |
109 | } |
110 | |
111 | return support_state; |
112 | } |
113 | |
114 | /*====================================================================*/ |
115 | /* Gamma Function Implementation*/ |
116 | /*====================================================================*/ |
117 | |
118 | void viafb_set_gamma_table(int bpp, unsigned int *gamma_table) |
119 | { |
120 | int i, sr1a; |
121 | int active_device_amount = 0; |
122 | int device_status = viafb_DeviceStatus; |
123 | |
124 | for (i = 0; i < sizeof(viafb_DeviceStatus) * 8; i++) { |
125 | if (device_status & 1) |
126 | active_device_amount++; |
127 | device_status >>= 1; |
128 | } |
129 | |
130 | /* 8 bpp mode can't adjust gamma */ |
131 | if (bpp == 8) |
132 | return ; |
133 | |
134 | /* Enable Gamma */ |
135 | switch (viaparinfo->chip_info->gfx_chip_name) { |
136 | case UNICHROME_CLE266: |
137 | case UNICHROME_K400: |
138 | viafb_write_reg_mask(SR16, VIASR, 0x80, BIT7); |
139 | break; |
140 | |
141 | case UNICHROME_K800: |
142 | case UNICHROME_PM800: |
143 | case UNICHROME_CN700: |
144 | case UNICHROME_CX700: |
145 | case UNICHROME_K8M890: |
146 | case UNICHROME_P4M890: |
147 | case UNICHROME_P4M900: |
148 | viafb_write_reg_mask(CR33, VIACR, 0x80, BIT7); |
149 | break; |
150 | } |
151 | sr1a = (unsigned int)viafb_read_reg(VIASR, SR1A); |
152 | viafb_write_reg_mask(SR1A, VIASR, 0x0, BIT0); |
153 | |
154 | /* Fill IGA1 Gamma Table */ |
155 | outb(value: 0, LUT_INDEX_WRITE); |
156 | for (i = 0; i < 256; i++) { |
157 | outb(value: gamma_table[i] >> 16, LUT_DATA); |
158 | outb(value: gamma_table[i] >> 8 & 0xFF, LUT_DATA); |
159 | outb(value: gamma_table[i] & 0xFF, LUT_DATA); |
160 | } |
161 | |
162 | /* If adjust Gamma value in SAMM, fill IGA1, |
163 | IGA2 Gamma table simultaneous. */ |
164 | /* Switch to IGA2 Gamma Table */ |
165 | if ((active_device_amount > 1) && |
166 | !((viaparinfo->chip_info->gfx_chip_name == |
167 | UNICHROME_CLE266) && |
168 | (viaparinfo->chip_info->gfx_chip_revision < 15))) { |
169 | viafb_write_reg_mask(SR1A, VIASR, 0x01, BIT0); |
170 | viafb_write_reg_mask(CR6A, VIACR, 0x02, BIT1); |
171 | |
172 | /* Fill IGA2 Gamma Table */ |
173 | outb(value: 0, LUT_INDEX_WRITE); |
174 | for (i = 0; i < 256; i++) { |
175 | outb(value: gamma_table[i] >> 16, LUT_DATA); |
176 | outb(value: gamma_table[i] >> 8 & 0xFF, LUT_DATA); |
177 | outb(value: gamma_table[i] & 0xFF, LUT_DATA); |
178 | } |
179 | } |
180 | viafb_write_reg(SR1A, VIASR, sr1a); |
181 | } |
182 | |
183 | void viafb_get_gamma_table(unsigned int *gamma_table) |
184 | { |
185 | unsigned char color_r, color_g, color_b; |
186 | unsigned char sr1a = 0; |
187 | int i; |
188 | |
189 | /* Enable Gamma */ |
190 | switch (viaparinfo->chip_info->gfx_chip_name) { |
191 | case UNICHROME_CLE266: |
192 | case UNICHROME_K400: |
193 | viafb_write_reg_mask(SR16, VIASR, 0x80, BIT7); |
194 | break; |
195 | |
196 | case UNICHROME_K800: |
197 | case UNICHROME_PM800: |
198 | case UNICHROME_CN700: |
199 | case UNICHROME_CX700: |
200 | case UNICHROME_K8M890: |
201 | case UNICHROME_P4M890: |
202 | case UNICHROME_P4M900: |
203 | viafb_write_reg_mask(CR33, VIACR, 0x80, BIT7); |
204 | break; |
205 | } |
206 | sr1a = viafb_read_reg(VIASR, SR1A); |
207 | viafb_write_reg_mask(SR1A, VIASR, 0x0, BIT0); |
208 | |
209 | /* Reading gamma table to get color value */ |
210 | outb(value: 0, LUT_INDEX_READ); |
211 | for (i = 0; i < 256; i++) { |
212 | color_r = inb(LUT_DATA); |
213 | color_g = inb(LUT_DATA); |
214 | color_b = inb(LUT_DATA); |
215 | gamma_table[i] = |
216 | ((((u32) color_r) << 16) | |
217 | (((u16) color_g) << 8)) | color_b; |
218 | } |
219 | viafb_write_reg(SR1A, VIASR, sr1a); |
220 | } |
221 | |
222 | void viafb_get_gamma_support_state(int bpp, unsigned int *support_state) |
223 | { |
224 | if (bpp == 8) |
225 | *support_state = None_Device; |
226 | else |
227 | *support_state = CRT_Device | DVI_Device | LCD_Device; |
228 | } |
229 | |