[Linux-fbdev-devel] [PATCH 9/9] viafb: VIA Frame Buffer Device Driver

From: JosephChan
Date: Wed May 07 2008 - 07:13:47 EST

Signed-off-by: Joseph Chan <josephchan@xxxxxxxxxx>

diff -Nur a/drivers/video/via/via_utility.h b/drivers/video/via/via_utility.h
--- a/drivers/video/via/via_utility.h 1969-12-31 19:00:00.000000000 -0500
+++ b/drivers/video/via/via_utility.h 2008-04-29 02:51:32.000000000 -0400
@@ -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 get_device_support_state(u32 *support_state);
+void get_device_connect_state(u32 *connect_state);
+bool lcd_get_support_expand_state(u32 xres, u32 yres);
+
+/* These function are used to access gamma table */
+void set_gamma_table(int bpp, unsigned int *gamma_table);
+void get_gamma_table(unsigned int *gamma_table);
+void get_gamma_support_state(int bpp, unsigned int *support_state);
+int input_parameter_converter(int parameter_value);
+
+#endif /* __VIAUTILITY_H__ */
diff -Nur a/drivers/video/via/vt1636.c b/drivers/video/via/vt1636.c
--- a/drivers/video/via/vt1636.c 1969-12-31 19:00:00.000000000 -0500
+++ b/drivers/video/via/vt1636.c 2008-05-04 07:20:00.000000000 -0400
@@ -0,0 +1,317 @@
+/*
+ * 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 gpio_i2c_read_lvds(struct lvds_setting_information *plvds_setting_info,
+ struct lvds_chip_information *plvds_chip_info, u8 index)
+{
+ u8 data;
+ int tmp;
+ tmp = chip_info.chip_on_slot;
+ switch (plvds_chip_info->i2c_port) {
+ case I2CPORTINDEX:
+ chip_info.chip_on_slot = PORT_ON_AMR;
+ break;
+ case GPIOPORTINDEX:
+ default:
+ chip_info.chip_on_slot = PORT_ON_AGP;
+ break;
+ }
+ i2cReadByte(plvds_chip_info->lvds_chip_slave_addr, index, &data);
+ chip_info.chip_on_slot = tmp;
+ return data;
+}
+
+void 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, tmp;
+ tmp = chip_info.chip_on_slot;
+ switch (plvds_chip_info->i2c_port) {
+ case I2CPORTINDEX:
+ chip_info.chip_on_slot = PORT_ON_AMR;
+ break;
+ case GPIOPORTINDEX:
+ default:
+ chip_info.chip_on_slot = PORT_ON_AGP;
+ break;
+ }
+
+ index = io_data.Index;
+ data = gpio_i2c_read_lvds(plvds_setting_info, plvds_chip_info, index);
+ data = (data & (~io_data.Mask)) | io_data.Data;
+
+ i2cWriteByte(plvds_chip_info->lvds_chip_slave_addr, index, data);
+ chip_info.chip_on_slot = tmp;
+}
+
+void 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++) {
+ 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) {
+ gpio_i2c_write_mask_lvds(plvds_setting_info,
+ plvds_chip_info,
+ DUAL_CHANNEL_ENABLE_TBL_VT1636[0]);
+ } else {
+ gpio_i2c_write_mask_lvds(plvds_setting_info,
+ plvds_chip_info,
+ SINGLE_CHANNEL_ENABLE_TBL_VT1636[0]);
+ }
+
+ if (plvds_setting_info->LCDDithering) {
+ gpio_i2c_write_mask_lvds(plvds_setting_info,
+ plvds_chip_info,
+ DITHERING_ENABLE_TBL_VT1636[0]);
+ } else {
+ gpio_i2c_write_mask_lvds(plvds_setting_info,
+ plvds_chip_info,
+ DITHERING_DISABLE_TBL_VT1636[0]);
+ }
+}
+
+void enable_lvds_vt1636(struct lvds_setting_information
+ *plvds_setting_info,
+ struct lvds_chip_information *plvds_chip_info)
+{
+
+ 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:
+ {
+ write_reg_mask(SR1E, VIASR, 0xC0, 0xC0);
+ break;
+ }
+
+ case INTERFACE_DVP1:
+ {
+ write_reg_mask(SR1E, VIASR, 0x30, 0x30);
+ break;
+ }
+
+ case INTERFACE_DFP_LOW:
+ {
+ write_reg_mask(SR2A, VIASR, 0x03, 0x03);
+ break;
+ }
+
+ case INTERFACE_DFP_HIGH:
+ {
+ write_reg_mask(SR2A, VIASR, 0x03, 0x0C);
+ break;
+ }
+
+ }
+}
+
+void disable_lvds_vt1636(struct lvds_setting_information
+ *plvds_setting_info,
+ struct lvds_chip_information *plvds_chip_info)
+{
+
+ 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:
+ {
+ write_reg_mask(SR1E, VIASR, 0x00, 0xC0);
+ break;
+ }
+
+ case INTERFACE_DVP1:
+ {
+ write_reg_mask(SR1E, VIASR, 0x00, 0x30);
+ break;
+ }
+
+ case INTERFACE_DFP_LOW:
+ {
+ write_reg_mask(SR2A, VIASR, 0x00, 0x03);
+ break;
+ }
+
+ case INTERFACE_DFP_HIGH:
+ {
+ write_reg_mask(SR2A, VIASR, 0x00, 0x0C);
+ break;
+ }
+
+ }
+}
+
+bool lvds_identify_vt1636(void)
+{
+ u8 Buffer[2];
+
+ DEBUG_MSG(KERN_INFO "lvds_identify_vt1636.\n");
+
+ /* Sense VT1636 LVDS Transmiter */
+ chip_info.lvds_chip_info.lvds_chip_slave_addr = VT1636_LVDS_I2C_ADDR;
+
+ /* Check vendor ID first: */
+ i2cReadByte((u8) chip_info.lvds_chip_info.lvds_chip_slave_addr,
+ 0x00, &Buffer[0]);
+ i2cReadByte((u8) chip_info.lvds_chip_info.lvds_chip_slave_addr,
+ 0x01, &Buffer[1]);
+
+ if (!((Buffer[0] == 0x06) && (Buffer[1] == 0x11)))
+ return FALSE;
+
+ /* Check Chip ID: */
+ i2cReadByte((u8) chip_info.lvds_chip_info.lvds_chip_slave_addr,
+ 0x02, &Buffer[0]);
+ i2cReadByte((u8) chip_info.lvds_chip_info.lvds_chip_slave_addr,
+ 0x03, &Buffer[1]);
+ if ((Buffer[0] == 0x45) && (Buffer[1] == 0x33)) {
+ chip_info.lvds_chip_info.lvds_chip_name = VT1636_LVDS;
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+int get_clk_range_index(u32 Clk)
+{
+ if (Clk < DPA_CLK_30M)
+ return DPA_CLK_RANGE_30M;
+ else if ((DPA_CLK_30M < Clk) && (Clk < DPA_CLK_50M))
+ return DPA_CLK_RANGE_30_50M;
+ else if ((DPA_CLK_50M < Clk) && (Clk < DPA_CLK_70M))
+ return DPA_CLK_RANGE_50_70M;
+ else if ((DPA_CLK_70M < Clk) && (Clk < DPA_CLK_100M))
+ return DPA_CLK_RANGE_70_100M;
+ else if ((DPA_CLK_100M < Clk) && (Clk < DPA_CLK_150M))
+ return DPA_CLK_RANGE_100_150M;
+ else
+ return DPA_CLK_RANGE_150M;
+}
+
+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;
+}
+
+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;
+ 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;
+ gpio_i2c_write_mask_lvds(plvds_setting_info, plvds_chip_info, io_data);
+}
+
+void 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 "vt1636_patch_skew_on_vt3324.\n");
+
+ /* Graphics DPA settings: */
+ index = get_clk_range_index(plvds_setting_info->vclk);
+ 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 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 "vt1636_patch_skew_on_vt3327.\n");
+
+ /* Graphics DPA settings: */
+ index = get_clk_range_index(plvds_setting_info->vclk);
+ 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 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 "vt1636_patch_skew_on_vt3364.\n");
+
+ /* Graphics DPA settings: */
+ index = get_clk_range_index(plvds_setting_info->vclk);
+ set_dpa_gfx(plvds_chip_info->output_interface,
+ &GFX_DPA_SETTING_TBL_VT3364[index]);
+}
diff -Nur a/drivers/video/via/vt1636.h b/drivers/video/via/vt1636.h
--- a/drivers/video/via/vt1636.h 1969-12-31 19:00:00.000000000 -0500
+++ b/drivers/video/via/vt1636.h 2008-04-29 02:51:33.000000000 -0400
@@ -0,0 +1,47 @@
+/*
+ * 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 lvds_identify_vt1636(void);
+void init_lvds_vt1636(struct lvds_setting_information *plvds_setting_info,
+ struct lvds_chip_information *plvds_chip_info);
+void enable_lvds_vt1636(struct lvds_setting_information
+ *plvds_setting_info,
+ struct lvds_chip_information *plvds_chip_info);
+void disable_lvds_vt1636(struct lvds_setting_information
+ *plvds_setting_info,
+ struct lvds_chip_information *plvds_chip_info);
+void vt1636_patch_skew_on_vt3324(struct lvds_setting_information
+ *plvds_setting_info,
+ struct lvds_chip_information
+ *plvds_chip_info);
+void vt1636_patch_skew_on_vt3327(struct lvds_setting_information
+ *plvds_setting_info,
+ struct lvds_chip_information
+ *plvds_chip_info);
+void vt1636_patch_skew_on_vt3364(struct lvds_setting_information
+ *plvds_setting_info,
+ struct lvds_chip_information
+ *plvds_chip_info);
+
+#endif
N‹§²æìr¸›yúèšØb²X¬¶ÇvØ^–)Þ{.nÇ+‰·¥Š{±‘êçzX§¶›¡Ü}©ž²ÆzÚ&j:+v‰¨¾«‘êçzZ+€Ê+zf£¢·hšˆ§~†­†Ûiÿûàz¹®w¥¢¸?™¨è­Ú&¢)ßf”ù^jÇy§m…á@A«a¶Úÿ 0¶ìh®å’i