[lcm] MTK平台移植屏幕lcd过程要点

下拉项目和编译

[W5900]
$ git clone ssh://172.16.16.15:29418/mtk_repository/MTK6580_WEG_L1_MP6.V2.19
$ git checkout -b MMI_W5900 origin/MMI_W5900
$ git pull
$ source build/envsetup.sh
$ copyproject SWY_W5910_A01
$ lunch
15. full_lcsh6580_weg_sh_l-eng
$ make -j8 2>&1 |tee wu-log20170705-all.txt

参考吴庆亚添加LCM驱动

Parent:     68d8b668 ([W5900_B02] 添加B02分支)
Author:     wuqingya <wuqingya@longcheer.net>
AuthorDate: 2016-12-08 19:19:19 +0800
Commit:     wuqingya <wuqingya@longcheer.net>
CommitDate: 2016-12-08 19:19:19 +0800

[W5900][LCM]添加三供LCM GT

编译生成对应数据

$make lk -j8 2>&1 |tee wu-lon-.txt
$make kernel bootimage -j8 2>&1 |tee wu-lon-.txt

wuchengbing@ubuntu:~/mtk/W5900/MTK6580_WEG_L1_MP6.V2.19/alps/out/target/product/lcsh6580_weg_sh_l/obj/BOOTLOADER_OBJ/build-lcsh6580_weg_sh_l/dev/lcm/st7701_fwvga_dsi_vdo_gt$ l
st7701_fwvga_dsi_vdo_gt.d  st7701_fwvga_dsi_vdo_gt.o

wuchengbing@ubuntu:~/mtk/W5900/MTK6580_WEG_L1_MP6.V2.19/alps/out/target/product/lcsh6580_weg_sh_l/obj/KERNEL_OBJ/drivers/misc/mediatek/lcm/st7701_fwvga_dsi_vdo_gt$ l
built-in.o  modules.order  st7701_fwvga_dsi_vdo_gt.o

为*#87#工模添加lcm节点信息

TP fl10802

#if defined(LCT_ADD_TP_VERSION)
static int gtp_info_read_proc(struct file *file, char *buffer, size_t count,  loff_t *ppos)
{

LCM himax_852xES

#ifdef SLT_DEVINFO_LCM
params->module="TXDY450SFWPC-15";
params->vendor="TONGXINGDA";
params->ic="FL10802";
params->info="480*854";
#endif
...

从单屏到多屏兼容

#CUSTOM_LK_LCM = "st7701_fwvga_dsi_vdo_gt"
CUSTOM_LK_LCM = "ili9806e_dsi_vdo_fwvga_jd fl10802_fwvga_dsi_vdo_txd st7701_fwvga_dsi_vdo_gt"

#CONFIG_CUSTOM_KERNEL_LCM="st7701_fwvga_dsi_vdo_gt"
CONFIG_CUSTOM_KERNEL_LCM="ili9806e_dsi_vdo_fwvga_jd fl10802_fwvga_dsi_vdo_txd st7701_fwvga_dsi_vdo_gt"