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230 lines
6.8 KiB
230 lines
6.8 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Copyright 1998-2008 VIA Technologies, Inc. All Rights Reserved. |
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* Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved. |
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*/ |
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#include <linux/via-core.h> |
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#include <linux/via_i2c.h> |
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#include "global.h" |
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static const struct IODATA common_init_data[] = { |
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/* Index, Mask, Value */ |
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/* Set panel power sequence timing */ |
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{0x10, 0xC0, 0x00}, |
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/* T1: VDD on - Data on. Each increment is 1 ms. (50ms = 031h) */ |
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{0x0B, 0xFF, 0x40}, |
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/* T2: Data on - Backlight on. Each increment is 2 ms. (210ms = 068h) */ |
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{0x0C, 0xFF, 0x31}, |
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/* T3: Backlight off -Data off. Each increment is 2 ms. (210ms = 068h)*/ |
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{0x0D, 0xFF, 0x31}, |
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/* T4: Data off - VDD off. Each increment is 1 ms. (50ms = 031h) */ |
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{0x0E, 0xFF, 0x68}, |
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/* T5: VDD off - VDD on. Each increment is 100 ms. (500ms = 04h) */ |
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{0x0F, 0xFF, 0x68}, |
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/* LVDS output power up */ |
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{0x09, 0xA0, 0xA0}, |
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/* turn on back light */ |
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{0x10, 0x33, 0x13} |
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}; |
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/* Index, Mask, Value */ |
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static const struct IODATA dual_channel_enable_data = {0x08, 0xF0, 0xE0}; |
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static const struct IODATA single_channel_enable_data = {0x08, 0xF0, 0x00}; |
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static const struct IODATA dithering_enable_data = {0x0A, 0x70, 0x50}; |
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static const struct IODATA dithering_disable_data = {0x0A, 0x70, 0x00}; |
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static const struct IODATA vdd_on_data = {0x10, 0x20, 0x20}; |
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static const struct IODATA vdd_off_data = {0x10, 0x20, 0x00}; |
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u8 viafb_gpio_i2c_read_lvds(struct lvds_setting_information |
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*plvds_setting_info, struct lvds_chip_information *plvds_chip_info, |
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u8 index) |
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{ |
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u8 data; |
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viafb_i2c_readbyte(plvds_chip_info->i2c_port, |
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plvds_chip_info->lvds_chip_slave_addr, index, &data); |
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return data; |
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} |
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void viafb_gpio_i2c_write_mask_lvds(struct lvds_setting_information |
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*plvds_setting_info, struct lvds_chip_information |
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*plvds_chip_info, struct IODATA io_data) |
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{ |
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int index, data; |
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index = io_data.Index; |
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data = viafb_gpio_i2c_read_lvds(plvds_setting_info, plvds_chip_info, |
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index); |
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data = (data & (~io_data.Mask)) | io_data.Data; |
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viafb_i2c_writebyte(plvds_chip_info->i2c_port, |
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plvds_chip_info->lvds_chip_slave_addr, index, data); |
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} |
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void viafb_init_lvds_vt1636(struct lvds_setting_information |
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*plvds_setting_info, struct lvds_chip_information *plvds_chip_info) |
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{ |
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int reg_num, i; |
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/* Common settings: */ |
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reg_num = ARRAY_SIZE(common_init_data); |
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for (i = 0; i < reg_num; i++) |
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viafb_gpio_i2c_write_mask_lvds(plvds_setting_info, |
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plvds_chip_info, common_init_data[i]); |
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/* Input Data Mode Select */ |
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if (plvds_setting_info->device_lcd_dualedge) |
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viafb_gpio_i2c_write_mask_lvds(plvds_setting_info, |
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plvds_chip_info, dual_channel_enable_data); |
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else |
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viafb_gpio_i2c_write_mask_lvds(plvds_setting_info, |
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plvds_chip_info, single_channel_enable_data); |
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if (plvds_setting_info->LCDDithering) |
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viafb_gpio_i2c_write_mask_lvds(plvds_setting_info, |
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plvds_chip_info, dithering_enable_data); |
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else |
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viafb_gpio_i2c_write_mask_lvds(plvds_setting_info, |
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plvds_chip_info, dithering_disable_data); |
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} |
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void viafb_enable_lvds_vt1636(struct lvds_setting_information |
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*plvds_setting_info, |
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struct lvds_chip_information *plvds_chip_info) |
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{ |
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viafb_gpio_i2c_write_mask_lvds(plvds_setting_info, plvds_chip_info, |
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vdd_on_data); |
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} |
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void viafb_disable_lvds_vt1636(struct lvds_setting_information |
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*plvds_setting_info, |
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struct lvds_chip_information *plvds_chip_info) |
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{ |
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viafb_gpio_i2c_write_mask_lvds(plvds_setting_info, plvds_chip_info, |
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vdd_off_data); |
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} |
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bool viafb_lvds_identify_vt1636(u8 i2c_adapter) |
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{ |
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u8 Buffer[2]; |
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DEBUG_MSG(KERN_INFO "viafb_lvds_identify_vt1636.\n"); |
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/* Sense VT1636 LVDS Transmiter */ |
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viaparinfo->chip_info->lvds_chip_info.lvds_chip_slave_addr = |
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VT1636_LVDS_I2C_ADDR; |
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/* Check vendor ID first: */ |
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if (viafb_i2c_readbyte(i2c_adapter, VT1636_LVDS_I2C_ADDR, |
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0x00, &Buffer[0])) |
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return false; |
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viafb_i2c_readbyte(i2c_adapter, VT1636_LVDS_I2C_ADDR, 0x01, &Buffer[1]); |
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if (!((Buffer[0] == 0x06) && (Buffer[1] == 0x11))) |
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return false; |
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/* Check Chip ID: */ |
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viafb_i2c_readbyte(i2c_adapter, VT1636_LVDS_I2C_ADDR, 0x02, &Buffer[0]); |
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viafb_i2c_readbyte(i2c_adapter, VT1636_LVDS_I2C_ADDR, 0x03, &Buffer[1]); |
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if ((Buffer[0] == 0x45) && (Buffer[1] == 0x33)) { |
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viaparinfo->chip_info->lvds_chip_info.lvds_chip_name = |
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VT1636_LVDS; |
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return true; |
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} |
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return false; |
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} |
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static int get_clk_range_index(u32 Clk) |
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{ |
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if (Clk < DPA_CLK_30M) |
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return DPA_CLK_RANGE_30M; |
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else if (Clk < DPA_CLK_50M) |
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return DPA_CLK_RANGE_30_50M; |
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else if (Clk < DPA_CLK_70M) |
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return DPA_CLK_RANGE_50_70M; |
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else if (Clk < DPA_CLK_100M) |
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return DPA_CLK_RANGE_70_100M; |
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else if (Clk < DPA_CLK_150M) |
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return DPA_CLK_RANGE_100_150M; |
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else |
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return DPA_CLK_RANGE_150M; |
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} |
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static void set_dpa_vt1636(struct lvds_setting_information |
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*plvds_setting_info, struct lvds_chip_information *plvds_chip_info, |
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struct VT1636_DPA_SETTING *p_vt1636_dpa_setting) |
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{ |
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struct IODATA io_data; |
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io_data.Index = 0x09; |
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io_data.Mask = 0x1F; |
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io_data.Data = p_vt1636_dpa_setting->CLK_SEL_ST1; |
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viafb_gpio_i2c_write_mask_lvds(plvds_setting_info, |
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plvds_chip_info, io_data); |
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io_data.Index = 0x08; |
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io_data.Mask = 0x0F; |
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io_data.Data = p_vt1636_dpa_setting->CLK_SEL_ST2; |
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viafb_gpio_i2c_write_mask_lvds(plvds_setting_info, plvds_chip_info, |
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io_data); |
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} |
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void viafb_vt1636_patch_skew_on_vt3324( |
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struct lvds_setting_information *plvds_setting_info, |
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struct lvds_chip_information *plvds_chip_info) |
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{ |
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struct VT1636_DPA_SETTING dpa = {0x00, 0x00}, dpa_16x12 = {0x0B, 0x03}, |
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*pdpa; |
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int index; |
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DEBUG_MSG(KERN_INFO "viafb_vt1636_patch_skew_on_vt3324.\n"); |
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/* Graphics DPA settings: */ |
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index = get_clk_range_index(plvds_setting_info->vclk); |
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viafb_set_dpa_gfx(plvds_chip_info->output_interface, |
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&GFX_DPA_SETTING_TBL_VT3324[index]); |
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/* LVDS Transmitter DPA settings: */ |
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if (plvds_setting_info->lcd_panel_hres == 1600 && |
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plvds_setting_info->lcd_panel_vres == 1200) |
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pdpa = &dpa_16x12; |
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else |
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pdpa = &dpa; |
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set_dpa_vt1636(plvds_setting_info, plvds_chip_info, pdpa); |
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} |
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void viafb_vt1636_patch_skew_on_vt3327( |
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struct lvds_setting_information *plvds_setting_info, |
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struct lvds_chip_information *plvds_chip_info) |
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{ |
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struct VT1636_DPA_SETTING dpa = {0x00, 0x00}; |
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int index; |
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DEBUG_MSG(KERN_INFO "viafb_vt1636_patch_skew_on_vt3327.\n"); |
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/* Graphics DPA settings: */ |
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index = get_clk_range_index(plvds_setting_info->vclk); |
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viafb_set_dpa_gfx(plvds_chip_info->output_interface, |
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&GFX_DPA_SETTING_TBL_VT3327[index]); |
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/* LVDS Transmitter DPA settings: */ |
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set_dpa_vt1636(plvds_setting_info, plvds_chip_info, &dpa); |
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} |
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void viafb_vt1636_patch_skew_on_vt3364( |
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struct lvds_setting_information *plvds_setting_info, |
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struct lvds_chip_information *plvds_chip_info) |
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{ |
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int index; |
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DEBUG_MSG(KERN_INFO "viafb_vt1636_patch_skew_on_vt3364.\n"); |
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/* Graphics DPA settings: */ |
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index = get_clk_range_index(plvds_setting_info->vclk); |
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viafb_set_dpa_gfx(plvds_chip_info->output_interface, |
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&GFX_DPA_SETTING_TBL_VT3364[index]); |
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}
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