/* * 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 #include #include "global.h" static const struct IODATA common_init_data[] = { /* Index, Mask, Value */ /* Set panel power sequence timing */ {0x10, 0xC0, 0x00}, /* T1: VDD on - Data on. Each increment is 1 ms. (50ms = 031h) */ {0x0B, 0xFF, 0x40}, /* T2: Data on - Backlight on. Each increment is 2 ms. (210ms = 068h) */ {0x0C, 0xFF, 0x31}, /* T3: Backlight off -Data off. Each increment is 2 ms. (210ms = 068h)*/ {0x0D, 0xFF, 0x31}, /* T4: Data off - VDD off. Each increment is 1 ms. (50ms = 031h) */ {0x0E, 0xFF, 0x68}, /* T5: VDD off - VDD on. Each increment is 100 ms. (500ms = 04h) */ {0x0F, 0xFF, 0x68}, /* LVDS output power up */ {0x09, 0xA0, 0xA0}, /* turn on back light */ {0x10, 0x33, 0x13} }; /* Index, Mask, Value */ static const struct IODATA dual_channel_enable_data = {0x08, 0xF0, 0xE0}; static const struct IODATA single_channel_enable_data = {0x08, 0xF0, 0x00}; static const struct IODATA dithering_enable_data = {0x0A, 0x70, 0x50}; static const struct IODATA dithering_disable_data = {0x0A, 0x70, 0x00}; static const struct IODATA vdd_on_data = {0x10, 0x20, 0x20}; static const struct IODATA vdd_off_data = {0x10, 0x20, 0x00}; u8 viafb_gpio_i2c_read_lvds(struct lvds_setting_information *plvds_setting_info, struct lvds_chip_information *plvds_chip_info, u8 index) { u8 data; viafb_i2c_readbyte(plvds_chip_info->i2c_port, 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; 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->i2c_port, 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_data); for (i = 0; i < reg_num; i++) viafb_gpio_i2c_write_mask_lvds(plvds_setting_info, plvds_chip_info, common_init_data[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_data); else viafb_gpio_i2c_write_mask_lvds(plvds_setting_info, plvds_chip_info, single_channel_enable_data); if (plvds_setting_info->LCDDithering) viafb_gpio_i2c_write_mask_lvds(plvds_setting_info, plvds_chip_info, dithering_enable_data); else viafb_gpio_i2c_write_mask_lvds(plvds_setting_info, plvds_chip_info, dithering_disable_data); } 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_data); } 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_data); } bool viafb_lvds_identify_vt1636(u8 i2c_adapter) { 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: */ if (viafb_i2c_readbyte(i2c_adapter, VT1636_LVDS_I2C_ADDR, 0x00, &Buffer[0])) return false; viafb_i2c_readbyte(i2c_adapter, VT1636_LVDS_I2C_ADDR, 0x01, &Buffer[1]); if (!((Buffer[0] == 0x06) && (Buffer[1] == 0x11))) return false; /* Check Chip ID: */ viafb_i2c_readbyte(i2c_adapter, VT1636_LVDS_I2C_ADDR, 0x02, &Buffer[0]); viafb_i2c_readbyte(i2c_adapter, VT1636_LVDS_I2C_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 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) { struct VT1636_DPA_SETTING dpa = {0x00, 0x00}, dpa_16x12 = {0x0B, 0x03}, *pdpa; int index; 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: */ if (plvds_setting_info->lcd_panel_hres == 1600 && plvds_setting_info->lcd_panel_vres == 1200) pdpa = &dpa_16x12; else pdpa = &dpa; set_dpa_vt1636(plvds_setting_info, plvds_chip_info, pdpa); } void viafb_vt1636_patch_skew_on_vt3327( struct lvds_setting_information *plvds_setting_info, struct lvds_chip_information *plvds_chip_info) { struct VT1636_DPA_SETTING dpa = {0x00, 0x00}; int index; 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: */ set_dpa_vt1636(plvds_setting_info, plvds_chip_info, &dpa); } 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]); }