disp: msm: dsi: Add support to keep display reset pin high

This change adds support to keep display reset pin high during
suspend state.

Change-Id: I8fab43d8f7b30fce72cc95277d016b72b914aa99
Signed-off-by: Ritesh Kumar <[email protected]>
Signed-off-by: Steve Cohen <[email protected]>

msm/dsi/dsi_panel.c

@@ -356,7 +356,8 @@ static int dsi_panel_power_off(struct dsi_panel *panel)
 	if (gpio_is_valid(panel->reset_config.disp_en_gpio))
 		gpio_set_value(panel->reset_config.disp_en_gpio, 0);
 
-	if (gpio_is_valid(panel->reset_config.reset_gpio))
+	if (gpio_is_valid(panel->reset_config.reset_gpio) &&
+					!panel->reset_gpio_always_on)
 		gpio_set_value(panel->reset_config.reset_gpio, 0);
 
 	if (gpio_is_valid(panel->reset_config.lcd_mode_sel_gpio))
@@ -1949,6 +1950,9 @@ static int dsi_panel_parse_misc_features(struct dsi_panel *panel)
 	panel->lp11_init = utils->read_bool(utils->data,
 			"qcom,mdss-dsi-lp11-init");
 
+	panel->reset_gpio_always_on = utils->read_bool(utils->data,
+			"qcom,platform-reset-gpio-always-on");
+
 	panel->spr_info.enable = false;
 	panel->spr_info.pack_type = MSM_DISPLAY_SPR_TYPE_MAX;
 
@@ -1970,7 +1974,6 @@ static int dsi_panel_parse_misc_features(struct dsi_panel *panel)
 		panel->spr_info.enable ?
 		msm_spr_pack_type_str[panel->spr_info.pack_type] : "none");
 
-
 	return 0;
 }
 

msm/dsi/dsi_panel.h

@@ -226,6 +226,7 @@ struct dsi_panel {
 	bool ulps_feature_enabled;
 	bool ulps_suspend_enabled;
 	bool allow_phy_power_off;
+	bool reset_gpio_always_on;
 	atomic_t esd_recovery_pending;
 
 	bool panel_initialized;