diff options
Diffstat (limited to 'drivers/video/fbdev/via/vt1636.c')
-rw-r--r-- | drivers/video/fbdev/via/vt1636.c | 244 |
1 files changed, 244 insertions, 0 deletions
diff --git a/drivers/video/fbdev/via/vt1636.c b/drivers/video/fbdev/via/vt1636.c new file mode 100644 index 000000000000..ee2903b472cf --- /dev/null +++ b/drivers/video/fbdev/via/vt1636.c | |||
@@ -0,0 +1,244 @@ | |||
1 | /* | ||
2 | * Copyright 1998-2008 VIA Technologies, Inc. All Rights Reserved. | ||
3 | * Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved. | ||
4 | |||
5 | * This program is free software; you can redistribute it and/or | ||
6 | * modify it under the terms of the GNU General Public | ||
7 | * License as published by the Free Software Foundation; | ||
8 | * either version 2, or (at your option) any later version. | ||
9 | |||
10 | * This program is distributed in the hope that it will be useful, | ||
11 | * but WITHOUT ANY WARRANTIES OR REPRESENTATIONS; without even | ||
12 | * the implied warranty of MERCHANTABILITY or FITNESS FOR | ||
13 | * A PARTICULAR PURPOSE.See the GNU General Public License | ||
14 | * for more details. | ||
15 | |||
16 | * You should have received a copy of the GNU General Public License | ||
17 | * along with this program; if not, write to the Free Software | ||
18 | * Foundation, Inc., | ||
19 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | ||
20 | */ | ||
21 | |||
22 | #include <linux/via-core.h> | ||
23 | #include <linux/via_i2c.h> | ||
24 | #include "global.h" | ||
25 | |||
26 | static const struct IODATA common_init_data[] = { | ||
27 | /* Index, Mask, Value */ | ||
28 | /* Set panel power sequence timing */ | ||
29 | {0x10, 0xC0, 0x00}, | ||
30 | /* T1: VDD on - Data on. Each increment is 1 ms. (50ms = 031h) */ | ||
31 | {0x0B, 0xFF, 0x40}, | ||
32 | /* T2: Data on - Backlight on. Each increment is 2 ms. (210ms = 068h) */ | ||
33 | {0x0C, 0xFF, 0x31}, | ||
34 | /* T3: Backlight off -Data off. Each increment is 2 ms. (210ms = 068h)*/ | ||
35 | {0x0D, 0xFF, 0x31}, | ||
36 | /* T4: Data off - VDD off. Each increment is 1 ms. (50ms = 031h) */ | ||
37 | {0x0E, 0xFF, 0x68}, | ||
38 | /* T5: VDD off - VDD on. Each increment is 100 ms. (500ms = 04h) */ | ||
39 | {0x0F, 0xFF, 0x68}, | ||
40 | /* LVDS output power up */ | ||
41 | {0x09, 0xA0, 0xA0}, | ||
42 | /* turn on back light */ | ||
43 | {0x10, 0x33, 0x13} | ||
44 | }; | ||
45 | |||
46 | /* Index, Mask, Value */ | ||
47 | static const struct IODATA dual_channel_enable_data = {0x08, 0xF0, 0xE0}; | ||
48 | static const struct IODATA single_channel_enable_data = {0x08, 0xF0, 0x00}; | ||
49 | static const struct IODATA dithering_enable_data = {0x0A, 0x70, 0x50}; | ||
50 | static const struct IODATA dithering_disable_data = {0x0A, 0x70, 0x00}; | ||
51 | static const struct IODATA vdd_on_data = {0x10, 0x20, 0x20}; | ||
52 | static const struct IODATA vdd_off_data = {0x10, 0x20, 0x00}; | ||
53 | |||
54 | u8 viafb_gpio_i2c_read_lvds(struct lvds_setting_information | ||
55 | *plvds_setting_info, struct lvds_chip_information *plvds_chip_info, | ||
56 | u8 index) | ||
57 | { | ||
58 | u8 data; | ||
59 | |||
60 | viafb_i2c_readbyte(plvds_chip_info->i2c_port, | ||
61 | plvds_chip_info->lvds_chip_slave_addr, index, &data); | ||
62 | return data; | ||
63 | } | ||
64 | |||
65 | void viafb_gpio_i2c_write_mask_lvds(struct lvds_setting_information | ||
66 | *plvds_setting_info, struct lvds_chip_information | ||
67 | *plvds_chip_info, struct IODATA io_data) | ||
68 | { | ||
69 | int index, data; | ||
70 | |||
71 | index = io_data.Index; | ||
72 | data = viafb_gpio_i2c_read_lvds(plvds_setting_info, plvds_chip_info, | ||
73 | index); | ||
74 | data = (data & (~io_data.Mask)) | io_data.Data; | ||
75 | |||
76 | viafb_i2c_writebyte(plvds_chip_info->i2c_port, | ||
77 | plvds_chip_info->lvds_chip_slave_addr, index, data); | ||
78 | } | ||
79 | |||
80 | void viafb_init_lvds_vt1636(struct lvds_setting_information | ||
81 | *plvds_setting_info, struct lvds_chip_information *plvds_chip_info) | ||
82 | { | ||
83 | int reg_num, i; | ||
84 | |||
85 | /* Common settings: */ | ||
86 | reg_num = ARRAY_SIZE(common_init_data); | ||
87 | for (i = 0; i < reg_num; i++) | ||
88 | viafb_gpio_i2c_write_mask_lvds(plvds_setting_info, | ||
89 | plvds_chip_info, common_init_data[i]); | ||
90 | |||
91 | /* Input Data Mode Select */ | ||
92 | if (plvds_setting_info->device_lcd_dualedge) | ||
93 | viafb_gpio_i2c_write_mask_lvds(plvds_setting_info, | ||
94 | plvds_chip_info, dual_channel_enable_data); | ||
95 | else | ||
96 | viafb_gpio_i2c_write_mask_lvds(plvds_setting_info, | ||
97 | plvds_chip_info, single_channel_enable_data); | ||
98 | |||
99 | if (plvds_setting_info->LCDDithering) | ||
100 | viafb_gpio_i2c_write_mask_lvds(plvds_setting_info, | ||
101 | plvds_chip_info, dithering_enable_data); | ||
102 | else | ||
103 | viafb_gpio_i2c_write_mask_lvds(plvds_setting_info, | ||
104 | plvds_chip_info, dithering_disable_data); | ||
105 | } | ||
106 | |||
107 | void viafb_enable_lvds_vt1636(struct lvds_setting_information | ||
108 | *plvds_setting_info, | ||
109 | struct lvds_chip_information *plvds_chip_info) | ||
110 | { | ||
111 | viafb_gpio_i2c_write_mask_lvds(plvds_setting_info, plvds_chip_info, | ||
112 | vdd_on_data); | ||
113 | } | ||
114 | |||
115 | void viafb_disable_lvds_vt1636(struct lvds_setting_information | ||
116 | *plvds_setting_info, | ||
117 | struct lvds_chip_information *plvds_chip_info) | ||
118 | { | ||
119 | viafb_gpio_i2c_write_mask_lvds(plvds_setting_info, plvds_chip_info, | ||
120 | vdd_off_data); | ||
121 | } | ||
122 | |||
123 | bool viafb_lvds_identify_vt1636(u8 i2c_adapter) | ||
124 | { | ||
125 | u8 Buffer[2]; | ||
126 | |||
127 | DEBUG_MSG(KERN_INFO "viafb_lvds_identify_vt1636.\n"); | ||
128 | |||
129 | /* Sense VT1636 LVDS Transmiter */ | ||
130 | viaparinfo->chip_info->lvds_chip_info.lvds_chip_slave_addr = | ||
131 | VT1636_LVDS_I2C_ADDR; | ||
132 | |||
133 | /* Check vendor ID first: */ | ||
134 | if (viafb_i2c_readbyte(i2c_adapter, VT1636_LVDS_I2C_ADDR, | ||
135 | 0x00, &Buffer[0])) | ||
136 | return false; | ||
137 | viafb_i2c_readbyte(i2c_adapter, VT1636_LVDS_I2C_ADDR, 0x01, &Buffer[1]); | ||
138 | |||
139 | if (!((Buffer[0] == 0x06) && (Buffer[1] == 0x11))) | ||
140 | return false; | ||
141 | |||
142 | /* Check Chip ID: */ | ||
143 | viafb_i2c_readbyte(i2c_adapter, VT1636_LVDS_I2C_ADDR, 0x02, &Buffer[0]); | ||
144 | viafb_i2c_readbyte(i2c_adapter, VT1636_LVDS_I2C_ADDR, 0x03, &Buffer[1]); | ||
145 | if ((Buffer[0] == 0x45) && (Buffer[1] == 0x33)) { | ||
146 | viaparinfo->chip_info->lvds_chip_info.lvds_chip_name = | ||
147 | VT1636_LVDS; | ||
148 | return true; | ||
149 | } | ||
150 | |||
151 | return false; | ||
152 | } | ||
153 | |||
154 | static int get_clk_range_index(u32 Clk) | ||
155 | { | ||
156 | if (Clk < DPA_CLK_30M) | ||
157 | return DPA_CLK_RANGE_30M; | ||
158 | else if (Clk < DPA_CLK_50M) | ||
159 | return DPA_CLK_RANGE_30_50M; | ||
160 | else if (Clk < DPA_CLK_70M) | ||
161 | return DPA_CLK_RANGE_50_70M; | ||
162 | else if (Clk < DPA_CLK_100M) | ||
163 | return DPA_CLK_RANGE_70_100M; | ||
164 | else if (Clk < DPA_CLK_150M) | ||
165 | return DPA_CLK_RANGE_100_150M; | ||
166 | else | ||
167 | return DPA_CLK_RANGE_150M; | ||
168 | } | ||
169 | |||
170 | static void set_dpa_vt1636(struct lvds_setting_information | ||
171 | *plvds_setting_info, struct lvds_chip_information *plvds_chip_info, | ||
172 | struct VT1636_DPA_SETTING *p_vt1636_dpa_setting) | ||
173 | { | ||
174 | struct IODATA io_data; | ||
175 | |||
176 | io_data.Index = 0x09; | ||
177 | io_data.Mask = 0x1F; | ||
178 | io_data.Data = p_vt1636_dpa_setting->CLK_SEL_ST1; | ||
179 | viafb_gpio_i2c_write_mask_lvds(plvds_setting_info, | ||
180 | plvds_chip_info, io_data); | ||
181 | |||
182 | io_data.Index = 0x08; | ||
183 | io_data.Mask = 0x0F; | ||
184 | io_data.Data = p_vt1636_dpa_setting->CLK_SEL_ST2; | ||
185 | viafb_gpio_i2c_write_mask_lvds(plvds_setting_info, plvds_chip_info, | ||
186 | io_data); | ||
187 | } | ||
188 | |||
189 | void viafb_vt1636_patch_skew_on_vt3324( | ||
190 | struct lvds_setting_information *plvds_setting_info, | ||
191 | struct lvds_chip_information *plvds_chip_info) | ||
192 | { | ||
193 | struct VT1636_DPA_SETTING dpa = {0x00, 0x00}, dpa_16x12 = {0x0B, 0x03}, | ||
194 | *pdpa; | ||
195 | int index; | ||
196 | |||
197 | DEBUG_MSG(KERN_INFO "viafb_vt1636_patch_skew_on_vt3324.\n"); | ||
198 | |||
199 | /* Graphics DPA settings: */ | ||
200 | index = get_clk_range_index(plvds_setting_info->vclk); | ||
201 | viafb_set_dpa_gfx(plvds_chip_info->output_interface, | ||
202 | &GFX_DPA_SETTING_TBL_VT3324[index]); | ||
203 | |||
204 | /* LVDS Transmitter DPA settings: */ | ||
205 | if (plvds_setting_info->lcd_panel_hres == 1600 && | ||
206 | plvds_setting_info->lcd_panel_vres == 1200) | ||
207 | pdpa = &dpa_16x12; | ||
208 | else | ||
209 | pdpa = &dpa; | ||
210 | |||
211 | set_dpa_vt1636(plvds_setting_info, plvds_chip_info, pdpa); | ||
212 | } | ||
213 | |||
214 | void viafb_vt1636_patch_skew_on_vt3327( | ||
215 | struct lvds_setting_information *plvds_setting_info, | ||
216 | struct lvds_chip_information *plvds_chip_info) | ||
217 | { | ||
218 | struct VT1636_DPA_SETTING dpa = {0x00, 0x00}; | ||
219 | int index; | ||
220 | |||
221 | DEBUG_MSG(KERN_INFO "viafb_vt1636_patch_skew_on_vt3327.\n"); | ||
222 | |||
223 | /* Graphics DPA settings: */ | ||
224 | index = get_clk_range_index(plvds_setting_info->vclk); | ||
225 | viafb_set_dpa_gfx(plvds_chip_info->output_interface, | ||
226 | &GFX_DPA_SETTING_TBL_VT3327[index]); | ||
227 | |||
228 | /* LVDS Transmitter DPA settings: */ | ||
229 | set_dpa_vt1636(plvds_setting_info, plvds_chip_info, &dpa); | ||
230 | } | ||
231 | |||
232 | void viafb_vt1636_patch_skew_on_vt3364( | ||
233 | struct lvds_setting_information *plvds_setting_info, | ||
234 | struct lvds_chip_information *plvds_chip_info) | ||
235 | { | ||
236 | int index; | ||
237 | |||
238 | DEBUG_MSG(KERN_INFO "viafb_vt1636_patch_skew_on_vt3364.\n"); | ||
239 | |||
240 | /* Graphics DPA settings: */ | ||
241 | index = get_clk_range_index(plvds_setting_info->vclk); | ||
242 | viafb_set_dpa_gfx(plvds_chip_info->output_interface, | ||
243 | &GFX_DPA_SETTING_TBL_VT3364[index]); | ||
244 | } | ||