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viafb: move some modesetting functions to a seperate file
viafb: move some modesetting functions to a seperate file This patch moves the modesetting functions which are already cleaned up to a seperate file. Just the beginning to bring some structure in this mess. Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
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Florian Tobias Schandinat
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Jonathan Corbet
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May 7, 2010
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,126 @@ | ||
| /* | ||
| * Copyright 1998-2008 VIA Technologies, Inc. All Rights Reserved. | ||
| * Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved. | ||
| * Copyright 2010 Florian Tobias Schandinat <FlorianSchandinat@gmx.de> | ||
| * | ||
| * 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. | ||
| */ | ||
| /* | ||
| * basic modesetting functions | ||
| */ | ||
|
|
||
| #include <linux/kernel.h> | ||
| #include "via_modesetting.h" | ||
| #include "via_io.h" | ||
| #include "share.h" | ||
| #include "debug.h" | ||
|
|
||
| void via_set_primary_address(u32 addr) | ||
| { | ||
| DEBUG_MSG(KERN_DEBUG "via_set_primary_address(0x%08X)\n", addr); | ||
| via_write_reg(VIACR, 0x0D, addr & 0xFF); | ||
| via_write_reg(VIACR, 0x0C, (addr >> 8) & 0xFF); | ||
| via_write_reg(VIACR, 0x34, (addr >> 16) & 0xFF); | ||
| via_write_reg_mask(VIACR, 0x48, (addr >> 24) & 0x1F, 0x1F); | ||
| } | ||
|
|
||
| void via_set_secondary_address(u32 addr) | ||
| { | ||
| DEBUG_MSG(KERN_DEBUG "via_set_secondary_address(0x%08X)\n", addr); | ||
| /* secondary display supports only quadword aligned memory */ | ||
| via_write_reg_mask(VIACR, 0x62, (addr >> 2) & 0xFE, 0xFE); | ||
| via_write_reg(VIACR, 0x63, (addr >> 10) & 0xFF); | ||
| via_write_reg(VIACR, 0x64, (addr >> 18) & 0xFF); | ||
| via_write_reg_mask(VIACR, 0xA3, (addr >> 26) & 0x07, 0x07); | ||
| } | ||
|
|
||
| void via_set_primary_pitch(u32 pitch) | ||
| { | ||
| DEBUG_MSG(KERN_DEBUG "via_set_primary_pitch(0x%08X)\n", pitch); | ||
| /* spec does not say that first adapter skips 3 bits but old | ||
| * code did it and seems to be reasonable in analogy to 2nd adapter | ||
| */ | ||
| pitch = pitch >> 3; | ||
| via_write_reg(VIACR, 0x13, pitch & 0xFF); | ||
| via_write_reg_mask(VIACR, 0x35, (pitch >> (8 - 5)) & 0xE0, 0xE0); | ||
| } | ||
|
|
||
| void via_set_secondary_pitch(u32 pitch) | ||
| { | ||
| DEBUG_MSG(KERN_DEBUG "via_set_secondary_pitch(0x%08X)\n", pitch); | ||
| pitch = pitch >> 3; | ||
| via_write_reg(VIACR, 0x66, pitch & 0xFF); | ||
| via_write_reg_mask(VIACR, 0x67, (pitch >> 8) & 0x03, 0x03); | ||
| via_write_reg_mask(VIACR, 0x71, (pitch >> (10 - 7)) & 0x80, 0x80); | ||
| } | ||
|
|
||
| void via_set_primary_color_depth(u8 depth) | ||
| { | ||
| u8 value; | ||
|
|
||
| DEBUG_MSG(KERN_DEBUG "via_set_primary_color_depth(%d)\n", depth); | ||
| switch (depth) { | ||
| case 8: | ||
| value = 0x00; | ||
| break; | ||
| case 15: | ||
| value = 0x04; | ||
| break; | ||
| case 16: | ||
| value = 0x14; | ||
| break; | ||
| case 24: | ||
| value = 0x0C; | ||
| break; | ||
| case 30: | ||
| value = 0x08; | ||
| break; | ||
| default: | ||
| printk(KERN_WARNING "via_set_primary_color_depth: " | ||
| "Unsupported depth: %d\n", depth); | ||
| return; | ||
| } | ||
|
|
||
| via_write_reg_mask(VIASR, 0x15, value, 0x1C); | ||
| } | ||
|
|
||
| void via_set_secondary_color_depth(u8 depth) | ||
| { | ||
| u8 value; | ||
|
|
||
| DEBUG_MSG(KERN_DEBUG "via_set_secondary_color_depth(%d)\n", depth); | ||
| switch (depth) { | ||
| case 8: | ||
| value = 0x00; | ||
| break; | ||
| case 16: | ||
| value = 0x40; | ||
| break; | ||
| case 24: | ||
| value = 0xC0; | ||
| break; | ||
| case 30: | ||
| value = 0x80; | ||
| break; | ||
| default: | ||
| printk(KERN_WARNING "via_set_secondary_color_depth: " | ||
| "Unsupported depth: %d\n", depth); | ||
| return; | ||
| } | ||
|
|
||
| via_write_reg_mask(VIACR, 0x67, value, 0xC0); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,38 @@ | ||
| /* | ||
| * Copyright 1998-2008 VIA Technologies, Inc. All Rights Reserved. | ||
| * Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved. | ||
| * Copyright 2010 Florian Tobias Schandinat <FlorianSchandinat@gmx.de> | ||
| * | ||
| * 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. | ||
| */ | ||
| /* | ||
| * basic modesetting functions | ||
| */ | ||
|
|
||
| #ifndef __VIA_MODESETTING_H__ | ||
| #define __VIA_MODESETTING_H__ | ||
|
|
||
| #include <linux/types.h> | ||
|
|
||
| void via_set_primary_address(u32 addr); | ||
| void via_set_secondary_address(u32 addr); | ||
| void via_set_primary_pitch(u32 pitch); | ||
| void via_set_secondary_pitch(u32 pitch); | ||
| void via_set_primary_color_depth(u8 depth); | ||
| void via_set_secondary_color_depth(u8 depth); | ||
|
|
||
| #endif /* __VIA_MODESETTING_H__ */ |