/*
* emi_bwl_mod_init: module init function.
*/
static int __init emi_bwl_mod_init(void)
{
int ret;
ret = mtk_mem_bw_ctrl(CON_SCE_NORMAL, ENABLE_CON_SCE);
if (ret) {
xlog_printk(ANDROID_LOG_ERROR, "EMI/BWL", "fail to set EMI bandwidth limiter\n");
}
/* Register BW ctrl interface */
ret = platform_driver_register(&mem_bw_ctrl);
if (ret) {
xlog_printk(ANDROID_LOG_ERROR, "EMI/BWL", "fail to register EMI_BW_LIMITER driver\n");
}
ret = driver_create_file(&mem_bw_ctrl.driver, &driver_attr_concurrency_scenario);
if (ret) {
xlog_printk(ANDROID_LOG_ERROR, "EMI/BWL", "fail to create EMI_BW_LIMITER sysfs file\n");
}
/* Register DRAM type information interface */
ret = platform_driver_register(&ddr_type);
if (ret) {
xlog_printk(ANDROID_LOG_ERROR, "EMI/BWL", "fail to register DRAM_TYPE driver\n");
}
ret = driver_create_file(&ddr_type.driver, &driver_attr_ddr_type);
if (ret) {
xlog_printk(ANDROID_LOG_ERROR, "EMI/BWL", "fail to create DRAM_TYPE sysfs file\n");
}
return 0;
}
/*
* emi_bwl_mod_init: module init function.
*/
static int __init emi_bwl_mod_init(void)
{
int ret;
if(get_ddr_type() == 1) //DDR1
{
//write overhead value
writel(0x090B0B10, EMI_CONB); //read overhead for 4~1
writel(0x09090909, EMI_CONC); //read overhead for 8~5
writel(0x0B0E1013, EMI_COND); //write overhead for 4~1
writel(0x0909090A, EMI_CONE); //write overhead for 8~5
}
else if(get_ddr_type() == 2) //DDR2
{
//write overhead value
writel(0x0B0B0E17, EMI_CONB); //read overhead for 4~1
writel(0x0B0B0B0B, EMI_CONC); //read overhead for 8~5
writel(0x1012161E, EMI_COND); //write overhead for 4~1
writel(0x0B0B0D0E, EMI_CONE); //write overhead for 8~5
}
else if(get_ddr_type() == 3) //DDR3
{
writel(0x2B2C2C2E, EMI_CONB); //read overhead for 4~1
writel(0x2627292B, EMI_CONC); //read overhead for 8~5
writel(0x2B2C2C2E, EMI_COND); //write overhead for 4~1
writel(0x2627292B, EMI_CONE); //write overhead for 8~5
}
//write Filter Priority Encode
#if 0
writel(0x00112480, EMI_ARBI); //distant=0, urgent=1, miss=1, hit=2, limit=4, age=8, ultra=0
#else
#ifdef MTK_DISPLAY_HIGH_RESOLUTION
writel(0x01812484, EMI_ARBI); //degrade ultra-high priority from 8 to 4 when enable MM ultra-high
#else
writel(0x01812488, EMI_ARBI);
#endif
#endif
ret = mtk_mem_bw_ctrl(CON_SCE_NORMAL, ENABLE_CON_SCE);
if (ret) {
xlog_printk(ANDROID_LOG_ERROR, "EMI/BWL", "fail to set EMI bandwidth limiter\n");
}
ret = platform_driver_register(&mem_bw_ctrl);
if (ret) {
xlog_printk(ANDROID_LOG_ERROR, "EMI/BWL", "fail to register EMI_BW_LIMITER driver\n");
}
ret = driver_create_file(&mem_bw_ctrl.driver, &driver_attr_concurrency_scenario);
if (ret) {
xlog_printk(ANDROID_LOG_ERROR, "EMI/BWL", "fail to create EMI_BW_LIMITER sysfs file\n");
}
return 0;
}
/*
* con_sce_store: sysfs con_sce file store function.
* @driver:
* @buf:
* @count:
* Return the number of write bytes.
*/
static ssize_t con_sce_store(struct device_driver *driver, const char *buf, size_t count)
{
int i;
for (i = 0; i < NR_CON_SCE; i++) {
if (!strncmp(buf, con_sce_str[i], strlen(con_sce_str[i]))) {
if (!strncmp(buf + strlen(con_sce_str[i]) + 1, EN_CON_SCE_STR, strlen(EN_CON_SCE_STR))) {
mtk_mem_bw_ctrl(i, ENABLE_CON_SCE);
printk("concurrency scenario %s ON\n", con_sce_str[i]);
break;
} else if (!strncmp(buf + strlen(con_sce_str[i]) + 1, DIS_CON_SCE_STR, strlen(DIS_CON_SCE_STR))) {
mtk_mem_bw_ctrl(i, DISABLE_CON_SCE);
printk("concurrency scenario %s OFF\n", con_sce_str[i]);
break;
}
}
}
return count;
}