viafb: via_utility.c, via_utility.h, vt1636.c, vt1636.h
authorJoseph Chan <JosephChan@via.com.tw>
Thu, 16 Oct 2008 05:03:30 +0000 (22:03 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Thu, 16 Oct 2008 18:21:42 +0000 (11:21 -0700)
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>
drivers/video/via/via_utility.c [new file with mode: 0644]
drivers/video/via/via_utility.h [new file with mode: 0644]
drivers/video/via/vt1636.c [new file with mode: 0644]
drivers/video/via/vt1636.h [new file with mode: 0644]

diff --git a/drivers/video/via/via_utility.c b/drivers/video/via/via_utility.c
new file mode 100644 (file)
index 0000000..d53c3d5
--- /dev/null
@@ -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;
+}
diff --git a/drivers/video/via/via_utility.h b/drivers/video/via/via_utility.h
new file mode 100644 (file)
index 0000000..2fd4552
--- /dev/null
@@ -0,0 +1,35 @@
+/*
+ * 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.
+ */
+#ifndef __VIAUTILITY_H__
+#define __VIAUTILITY_H__
+
+/* These functions are used to get infomation about device's state */
+void viafb_get_device_support_state(u32 *support_state);
+void viafb_get_device_connect_state(u32 *connect_state);
+bool viafb_lcd_get_support_expand_state(u32 xres, u32 yres);
+
+/* These function are used to access gamma table */
+void viafb_set_gamma_table(int bpp, unsigned int *gamma_table);
+void viafb_get_gamma_table(unsigned int *gamma_table);
+void viafb_get_gamma_support_state(int bpp, unsigned int *support_state);
+int viafb_input_parameter_converter(int parameter_value);
+
+#endif /* __VIAUTILITY_H__ */
diff --git a/drivers/video/via/vt1636.c b/drivers/video/via/vt1636.c
new file mode 100644 (file)
index 0000000..322a9f9
--- /dev/null
@@ -0,0 +1,306 @@
+/*
+ * 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"
+
+u8 viafb_gpio_i2c_read_lvds(struct lvds_setting_information
+       *plvds_setting_info, struct lvds_chip_information *plvds_chip_info,
+       u8 index)
+{
+       u8 data;
+
+       viaparinfo->i2c_stuff.i2c_port = plvds_chip_info->i2c_port;
+       viafb_i2c_readbyte(plvds_chip_info->lvds_chip_slave_addr, index, &data);
+
+       return data;
+}
+
+void viafb_gpio_i2c_write_mask_lvds(struct lvds_setting_information
+                             *plvds_setting_info, struct lvds_chip_information
+                             *plvds_chip_info, struct IODATA io_data)
+{
+       int index, data;
+
+       viaparinfo->i2c_stuff.i2c_port = plvds_chip_info->i2c_port;
+
+       index = io_data.Index;
+       data = viafb_gpio_i2c_read_lvds(plvds_setting_info, plvds_chip_info,
+               index);
+       data = (data & (~io_data.Mask)) | io_data.Data;
+
+       viafb_i2c_writebyte(plvds_chip_info->lvds_chip_slave_addr, index, data);
+}
+
+void viafb_init_lvds_vt1636(struct lvds_setting_information
+       *plvds_setting_info, struct lvds_chip_information *plvds_chip_info)
+{
+       int reg_num, i;
+
+       /* Common settings: */
+       reg_num = ARRAY_SIZE(COMMON_INIT_TBL_VT1636);
+
+       for (i = 0; i < reg_num; i++) {
+               viafb_gpio_i2c_write_mask_lvds(plvds_setting_info,
+                                        plvds_chip_info,
+                                        COMMON_INIT_TBL_VT1636[i]);
+       }
+
+       /* Input Data Mode Select */
+       if (plvds_setting_info->device_lcd_dualedge) {
+               viafb_gpio_i2c_write_mask_lvds(plvds_setting_info,
+                                        plvds_chip_info,
+                                        DUAL_CHANNEL_ENABLE_TBL_VT1636[0]);
+       } else {
+               viafb_gpio_i2c_write_mask_lvds(plvds_setting_info,
+                                        plvds_chip_info,
+                                        SINGLE_CHANNEL_ENABLE_TBL_VT1636[0]);
+       }
+
+       if (plvds_setting_info->LCDDithering) {
+               viafb_gpio_i2c_write_mask_lvds(plvds_setting_info,
+                                        plvds_chip_info,
+                                        DITHERING_ENABLE_TBL_VT1636[0]);
+       } else {
+               viafb_gpio_i2c_write_mask_lvds(plvds_setting_info,
+                                        plvds_chip_info,
+                                        DITHERING_DISABLE_TBL_VT1636[0]);
+       }
+}
+
+void viafb_enable_lvds_vt1636(struct lvds_setting_information
+                       *plvds_setting_info,
+                       struct lvds_chip_information *plvds_chip_info)
+{
+
+       viafb_gpio_i2c_write_mask_lvds(plvds_setting_info, plvds_chip_info,
+                                VDD_ON_TBL_VT1636[0]);
+
+       /* Pad on: */
+       switch (plvds_chip_info->output_interface) {
+       case INTERFACE_DVP0:
+               {
+                       viafb_write_reg_mask(SR1E, VIASR, 0xC0, 0xC0);
+                       break;
+               }
+
+       case INTERFACE_DVP1:
+               {
+                       viafb_write_reg_mask(SR1E, VIASR, 0x30, 0x30);
+                       break;
+               }
+
+       case INTERFACE_DFP_LOW:
+               {
+                       viafb_write_reg_mask(SR2A, VIASR, 0x03, 0x03);
+                       break;
+               }
+
+       case INTERFACE_DFP_HIGH:
+               {
+                       viafb_write_reg_mask(SR2A, VIASR, 0x03, 0x0C);
+                       break;
+               }
+
+       }
+}
+
+void viafb_disable_lvds_vt1636(struct lvds_setting_information
+                        *plvds_setting_info,
+                        struct lvds_chip_information *plvds_chip_info)
+{
+
+       viafb_gpio_i2c_write_mask_lvds(plvds_setting_info, plvds_chip_info,
+                                VDD_OFF_TBL_VT1636[0]);
+
+       /* Pad off: */
+       switch (plvds_chip_info->output_interface) {
+       case INTERFACE_DVP0:
+               {
+                       viafb_write_reg_mask(SR1E, VIASR, 0x00, 0xC0);
+                       break;
+               }
+
+       case INTERFACE_DVP1:
+               {
+                       viafb_write_reg_mask(SR1E, VIASR, 0x00, 0x30);
+                       break;
+               }
+
+       case INTERFACE_DFP_LOW:
+               {
+                       viafb_write_reg_mask(SR2A, VIASR, 0x00, 0x03);
+                       break;
+               }
+
+       case INTERFACE_DFP_HIGH:
+               {
+                       viafb_write_reg_mask(SR2A, VIASR, 0x00, 0x0C);
+                       break;
+               }
+
+       }
+}
+
+bool viafb_lvds_identify_vt1636(void)
+{
+       u8 Buffer[2];
+
+       DEBUG_MSG(KERN_INFO "viafb_lvds_identify_vt1636.\n");
+
+       /* Sense VT1636 LVDS Transmiter */
+       viaparinfo->chip_info->lvds_chip_info.lvds_chip_slave_addr =
+       VT1636_LVDS_I2C_ADDR;
+
+       /* Check vendor ID first: */
+       viafb_i2c_readbyte((u8) viaparinfo->chip_info->lvds_chip_info.
+       lvds_chip_slave_addr,
+                   0x00, &Buffer[0]);
+       viafb_i2c_readbyte((u8) viaparinfo->chip_info->lvds_chip_info.
+               lvds_chip_slave_addr,
+                   0x01, &Buffer[1]);
+
+       if (!((Buffer[0] == 0x06) && (Buffer[1] == 0x11)))
+               return false;
+
+       /* Check Chip ID: */
+       viafb_i2c_readbyte((u8) viaparinfo->chip_info->lvds_chip_info.
+       lvds_chip_slave_addr,
+                   0x02, &Buffer[0]);
+       viafb_i2c_readbyte((u8) viaparinfo->chip_info->lvds_chip_info.
+               lvds_chip_slave_addr,
+                   0x03, &Buffer[1]);
+       if ((Buffer[0] == 0x45) && (Buffer[1] == 0x33)) {
+               viaparinfo->chip_info->lvds_chip_info.lvds_chip_name =
+                       VT1636_LVDS;
+               return true;
+       }
+
+       return false;
+}
+
+static int get_clk_range_index(u32 Clk)
+{
+       if (Clk < DPA_CLK_30M)
+               return DPA_CLK_RANGE_30M;
+       else if (Clk < DPA_CLK_50M)
+               return DPA_CLK_RANGE_30_50M;
+       else if (Clk < DPA_CLK_70M)
+               return DPA_CLK_RANGE_50_70M;
+       else if (Clk < DPA_CLK_100M)
+               return DPA_CLK_RANGE_70_100M;
+       else if (Clk < DPA_CLK_150M)
+               return DPA_CLK_RANGE_100_150M;
+       else
+               return DPA_CLK_RANGE_150M;
+}
+
+static int get_lvds_dpa_setting_index(int panel_size_id,
+                            struct VT1636_DPA_SETTING *p_vt1636_dpasetting_tbl,
+                              int tbl_size)
+{
+       int i;
+
+       for (i = 0; i < tbl_size; i++) {
+               if (panel_size_id == p_vt1636_dpasetting_tbl->PanelSizeID)
+                       return i;
+
+               p_vt1636_dpasetting_tbl++;
+       }
+
+       return 0;
+}
+
+static void set_dpa_vt1636(struct lvds_setting_information
+       *plvds_setting_info, struct lvds_chip_information *plvds_chip_info,
+                   struct VT1636_DPA_SETTING *p_vt1636_dpa_setting)
+{
+       struct IODATA io_data;
+
+       io_data.Index = 0x09;
+       io_data.Mask = 0x1F;
+       io_data.Data = p_vt1636_dpa_setting->CLK_SEL_ST1;
+       viafb_gpio_i2c_write_mask_lvds(plvds_setting_info,
+               plvds_chip_info, io_data);
+
+       io_data.Index = 0x08;
+       io_data.Mask = 0x0F;
+       io_data.Data = p_vt1636_dpa_setting->CLK_SEL_ST2;
+       viafb_gpio_i2c_write_mask_lvds(plvds_setting_info, plvds_chip_info,
+               io_data);
+}
+
+void viafb_vt1636_patch_skew_on_vt3324(
+       struct lvds_setting_information *plvds_setting_info,
+       struct lvds_chip_information *plvds_chip_info)
+{
+       int index, size;
+
+       DEBUG_MSG(KERN_INFO "viafb_vt1636_patch_skew_on_vt3324.\n");
+
+       /* Graphics DPA settings: */
+       index = get_clk_range_index(plvds_setting_info->vclk);
+       viafb_set_dpa_gfx(plvds_chip_info->output_interface,
+                   &GFX_DPA_SETTING_TBL_VT3324[index]);
+
+       /* LVDS Transmitter DPA settings: */
+       size = ARRAY_SIZE(VT1636_DPA_SETTING_TBL_VT3324);
+       index =
+           get_lvds_dpa_setting_index(plvds_setting_info->lcd_panel_id,
+                                      VT1636_DPA_SETTING_TBL_VT3324, size);
+       set_dpa_vt1636(plvds_setting_info, plvds_chip_info,
+                      &VT1636_DPA_SETTING_TBL_VT3324[index]);
+}
+
+void viafb_vt1636_patch_skew_on_vt3327(
+       struct lvds_setting_information *plvds_setting_info,
+       struct lvds_chip_information *plvds_chip_info)
+{
+       int index, size;
+
+       DEBUG_MSG(KERN_INFO "viafb_vt1636_patch_skew_on_vt3327.\n");
+
+       /* Graphics DPA settings: */
+       index = get_clk_range_index(plvds_setting_info->vclk);
+       viafb_set_dpa_gfx(plvds_chip_info->output_interface,
+                   &GFX_DPA_SETTING_TBL_VT3327[index]);
+
+       /* LVDS Transmitter DPA settings: */
+       size = ARRAY_SIZE(VT1636_DPA_SETTING_TBL_VT3327);
+       index =
+           get_lvds_dpa_setting_index(plvds_setting_info->lcd_panel_id,
+                                      VT1636_DPA_SETTING_TBL_VT3327, size);
+       set_dpa_vt1636(plvds_setting_info, plvds_chip_info,
+                      &VT1636_DPA_SETTING_TBL_VT3327[index]);
+}
+
+void viafb_vt1636_patch_skew_on_vt3364(
+       struct lvds_setting_information *plvds_setting_info,
+       struct lvds_chip_information *plvds_chip_info)
+{
+       int index;
+
+       DEBUG_MSG(KERN_INFO "viafb_vt1636_patch_skew_on_vt3364.\n");
+
+       /* Graphics DPA settings: */
+       index = get_clk_range_index(plvds_setting_info->vclk);
+       viafb_set_dpa_gfx(plvds_chip_info->output_interface,
+                   &GFX_DPA_SETTING_TBL_VT3364[index]);
+}
diff --git a/drivers/video/via/vt1636.h b/drivers/video/via/vt1636.h
new file mode 100644 (file)
index 0000000..2a150c5
--- /dev/null
@@ -0,0 +1,44 @@
+/*
+ * 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.
+ */
+
+#ifndef _VT1636_H_
+#define _VT1636_H_
+#include "chip.h"
+bool viafb_lvds_identify_vt1636(void);
+void viafb_init_lvds_vt1636(struct lvds_setting_information
+       *plvds_setting_info, struct lvds_chip_information *plvds_chip_info);
+void viafb_enable_lvds_vt1636(struct lvds_setting_information
+                       *plvds_setting_info,
+                       struct lvds_chip_information *plvds_chip_info);
+void viafb_disable_lvds_vt1636(struct lvds_setting_information
+                        *plvds_setting_info,
+                        struct lvds_chip_information *plvds_chip_info);
+void viafb_vt1636_patch_skew_on_vt3324(
+       struct lvds_setting_information *plvds_setting_info,
+       struct lvds_chip_information *plvds_chip_info);
+void viafb_vt1636_patch_skew_on_vt3327(
+       struct lvds_setting_information *plvds_setting_info,
+       struct lvds_chip_information *plvds_chip_info);
+void viafb_vt1636_patch_skew_on_vt3364(
+       struct lvds_setting_information *plvds_setting_info,
+       struct lvds_chip_information *plvds_chip_info);
+
+#endif