lcd: add lcd_init_level to control lcd display [2/2]

PD#TV-9856

Problem:
need change display driver for cool boot to enter
kernel stage freeze mode

Solution:
add lcd_panel_ctrl to control lcd display

Verify:
t962x2-x301

Change-Id: I8b58ab0a0f87c49791af7dddf7b05db37f7ad716
Signed-off-by: shaochan.liu <shaochan.liu@amlogic.com>

drivers/amlogic/media/vout/backlight/aml_bl.c

@@ -37,6 +37,7 @@
 #ifdef CONFIG_AMLOGIC_LCD
 #include <linux/amlogic/media/vout/lcd/lcd_notify.h>
 #include <linux/amlogic/media/vout/lcd/lcd_unifykey.h>
+#include <linux/amlogic/media/vout/lcd/lcd_vout.h>
 #endif
 #ifdef CONFIG_AMLOGIC_BL_EXTERN
 #include <linux/amlogic/media/vout/lcd/aml_bl_extern.h>
@@ -3429,8 +3430,15 @@ static const struct of_device_id bl_dt_match_table[] = {
 
 static void aml_bl_init_status_update(void)
 {
+	struct aml_lcd_drv_s *lcd_drv = aml_lcd_get_driver();
+	struct lcd_config_s *pconf;
 	unsigned int state;
 
+	pconf = lcd_drv->lcd_config;
+
+	if (pconf->lcd_boot_ctrl->lcd_init_level)
+		return;
+
 	state = bl_vcbus_read(ENCL_VIDEO_EN);
 	if (state == 0) /* default disable lcd & backlight */
 		return;

drivers/amlogic/media/vout/lcd/lcd_common.h

@@ -40,7 +40,8 @@
 /* 20190225: optimize unifykey read flow to avoid crash */
 /* 20190308: add more panel clk_ss_level step for tl1 */
 /* 20190520: add vbyone hw filter user define support */
-#define LCD_DRV_VERSION    "20190520"
+/* 20190911: add lcd_init_level for tl1 */
+#define LCD_DRV_VERSION    "20190911"
 
 #define VPP_OUT_SATURATE            (1 << 0)
 

drivers/amlogic/media/vout/lcd/lcd_tcon.c

@@ -555,6 +555,7 @@ int lcd_tcon_core_reg_get(unsigned char *buf, unsigned int size)
 
 int lcd_tcon_od_set(int flag)
 {
+	struct aml_lcd_drv_s *lcd_drv = aml_lcd_get_driver();
 	unsigned int reg, bit, temp;
 	int ret;
 
@@ -575,6 +576,9 @@ int lcd_tcon_od_set(int flag)
 		}
 	}
 
+	if (!(lcd_drv->lcd_status & LCD_STATUS_IF_ON))
+		return -1;
+
 	reg = lcd_tcon_data->reg_core_od;
 	bit = lcd_tcon_data->bit_od_en;
 	if (lcd_tcon_data->core_reg_width == 8)

drivers/amlogic/media/vout/lcd/lcd_vout.c

@@ -195,6 +195,7 @@ static struct lcd_boot_ctrl_s lcd_boot_ctrl_config = {
 	.lcd_type = LCD_TYPE_MAX,
 	.lcd_bits = 0,
 	.advanced_flag = 0,
+	.lcd_init_level = 0,
 	.debug_print_flag = 0,
 	.debug_test_pattern = 0,
 	.debug_para_source = 0,
@@ -370,6 +371,12 @@ static void lcd_power_encl_on(void)
 {
 	mutex_lock(&lcd_vout_mutex);
 
+	if (lcd_driver->lcd_status & LCD_STATUS_ENCL_ON) {
+		LCDPR("%s: on already\n", __func__);
+		mutex_unlock(&lcd_vout_mutex);
+		return;
+	}
+
 	lcd_driver->driver_init_pre();
 	lcd_driver->lcd_status |= LCD_STATUS_ENCL_ON;
 
@@ -396,6 +403,11 @@ static void lcd_power_encl_off(void)
 {
 	mutex_lock(&lcd_vout_mutex);
 
+	if (!(lcd_driver->lcd_status & LCD_STATUS_ENCL_ON)) {
+		LCDPR("%s: off already\n", __func__);
+		mutex_unlock(&lcd_vout_mutex);
+		return;
+	}
 	lcd_driver->lcd_status &= ~LCD_STATUS_ENCL_ON;
 	lcd_driver->driver_disable_post();
 
@@ -410,21 +422,21 @@ static void lcd_power_encl_off(void)
 static void lcd_power_if_on(void)
 {
 	mutex_lock(&lcd_vout_mutex);
-
-	lcd_driver->power_ctrl(1);
-	lcd_driver->lcd_status |= LCD_STATUS_IF_ON;
+	if (!(lcd_driver->lcd_status & LCD_STATUS_IF_ON)) {
+		lcd_driver->power_ctrl(1);
+		lcd_driver->lcd_status |= LCD_STATUS_IF_ON;
+	}
 	lcd_driver->lcd_config->change_flag = 0;
-
 	mutex_unlock(&lcd_vout_mutex);
 }
 
 static void lcd_power_if_off(void)
 {
 	mutex_lock(&lcd_vout_mutex);
-
-	lcd_driver->lcd_status &= ~LCD_STATUS_IF_ON;
-	lcd_driver->power_ctrl(0);
-
+	if (lcd_driver->lcd_status & LCD_STATUS_IF_ON) {
+		lcd_driver->lcd_status &= ~LCD_STATUS_IF_ON;
+		lcd_driver->power_ctrl(0);
+	}
 	mutex_unlock(&lcd_vout_mutex);
 }
 
@@ -1216,7 +1228,10 @@ static void lcd_config_default(void)
 	pconf->lcd_basic.v_active = lcd_vcbus_read(ENCL_VIDEO_VAVON_ELINE)
 			- lcd_vcbus_read(ENCL_VIDEO_VAVON_BLINE) + 1;
 	if (lcd_vcbus_read(ENCL_VIDEO_EN)) {
-		lcd_driver->lcd_status = LCD_STATUS_ON;
+		if (lcd_boot_ctrl_config.lcd_init_level)
+			lcd_driver->lcd_status = LCD_STATUS_ENCL_ON;
+		else
+			lcd_driver->lcd_status = LCD_STATUS_ON;
 		lcd_resume_flag = 1;
 	} else {
 		lcd_driver->lcd_status = 0;
@@ -1687,7 +1702,8 @@ static int __init lcd_boot_ctrl_setup(char *str)
 	lcd_boot_ctrl_config.lcd_type = 0xf & lcd_ctrl;
 	lcd_boot_ctrl_config.lcd_bits = 0xf & (lcd_ctrl >> 4);
 	lcd_boot_ctrl_config.advanced_flag = 0xff & (lcd_ctrl >> 8);
-	lcd_boot_ctrl_config.debug_print_flag = 0xf & (lcd_ctrl >> 16);
+	lcd_boot_ctrl_config.lcd_init_level = 0x1 & (lcd_ctrl >> 19);
+	lcd_boot_ctrl_config.debug_print_flag = 0xf & (lcd_ctrl >> 20);
 	lcd_boot_ctrl_config.debug_test_pattern = 0xf & (lcd_ctrl >> 24);
 	lcd_boot_ctrl_config.debug_para_source = 0x3 & (lcd_ctrl >> 28);
 	lcd_boot_ctrl_config.debug_lcd_mode = 0x3 & (lcd_ctrl >> 30);

include/linux/amlogic/media/vout/lcd/lcd_vout.h

@@ -436,7 +436,8 @@ struct lcd_boot_ctrl_s {
 	unsigned char lcd_type;	//bit[3:0]
 	unsigned char lcd_bits; //bit[7:4] bits:6 or 8
 	unsigned char advanced_flag;	//bit[15:8]
-	unsigned char debug_print_flag;	//bit[19:16]
+	unsigned char lcd_init_level;	//bit[19]
+	unsigned char debug_print_flag;	//bit[23:20]
 	unsigned char debug_test_pattern;	//bit[27:24]
 	unsigned char debug_para_source;//bit[29:28]
 					//0:normal, 1:dts, 2:unifykey, 3:TBD