fbdev: sh_mobile_lcdc: Return display connection state in display_on

Return true if the display is connected and false otherwise. Set the fb
info state to FBINFO_STATE_SUSPENDED in the sh_mobile_lcdc driver when
the display is not connected.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

diff --git a/drivers/video/sh_mipi_dsi.c b/drivers/video/sh_mipi_dsi.c
index 1ede247..5ff3742 100644 (file)
--- a/drivers/video/sh_mipi_dsi.c
+++ b/drivers/video/sh_mipi_dsi.c
@@ -412,7 +412,7 @@ static int mipi_display_on(struct sh_mobile_lcdc_entity *entity)
 
        sh_mipi_dsi_enable(mipi, true);
 
-       return 0;
+       return SH_MOBILE_LCDC_DISPLAY_CONNECTED;
 
 mipi_display_on_fail1:
        pm_runtime_put_sync(&mipi->pdev->dev);

diff --git a/drivers/video/sh_mobile_hdmi.c b/drivers/video/sh_mobile_hdmi.c
index c22e123..1464abf 100644 (file)
--- a/drivers/video/sh_mobile_hdmi.c
+++ b/drivers/video/sh_mobile_hdmi.c
@@ -1004,9 +1004,9 @@ static int sh_hdmi_display_on(struct sh_mobile_lcdc_entity *entity)
 {
        struct sh_hdmi *hdmi = entity_to_sh_hdmi(entity);
        struct sh_mobile_lcdc_chan *ch = entity->lcdc;
-       struct fb_info *info = ch->info;
 
-       dev_dbg(hdmi->dev, "%s(%p): state %x\n", __func__, hdmi, info->state);
+       dev_dbg(hdmi->dev, "%s(%p): state %x\n", __func__, hdmi,
+               hdmi->hp_state);
 
        /*
         * hp_state can be set to
@@ -1021,12 +1021,13 @@ static int sh_hdmi_display_on(struct sh_mobile_lcdc_entity *entity)
                dev_dbg(hdmi->dev, "HDMI running\n");
                break;
        case HDMI_HOTPLUG_DISCONNECTED:
-               info->state = FBINFO_STATE_SUSPENDED;
        default:
                hdmi->var = ch->display_var;
        }
 
-       return 0;
+       return hdmi->hp_state == HDMI_HOTPLUG_DISCONNECTED
+               ? SH_MOBILE_LCDC_DISPLAY_DISCONNECTED
+               : SH_MOBILE_LCDC_DISPLAY_CONNECTED;
 }
 
 static void sh_hdmi_display_off(struct sh_mobile_lcdc_entity *entity)

diff --git a/drivers/video/sh_mobile_lcdcfb.c b/drivers/video/sh_mobile_lcdcfb.c
index 03ee382..5a19ef3 100644 (file)
--- a/drivers/video/sh_mobile_lcdcfb.c
+++ b/drivers/video/sh_mobile_lcdcfb.c
@@ -338,8 +338,14 @@ static void sh_mobile_lcdc_display_on(struct sh_mobile_lcdc_chan *ch)
        struct sh_mobile_lcdc_panel_cfg *panel = &ch->cfg.panel_cfg;
 
        if (ch->tx_dev) {
-               if (ch->tx_dev->ops->display_on(ch->tx_dev) < 0)
+               int ret;
+
+               ret = ch->tx_dev->ops->display_on(ch->tx_dev);
+               if (ret < 0)
                        return;
+
+               if (ret == SH_MOBILE_LCDC_DISPLAY_DISCONNECTED)
+                       ch->info->state = FBINFO_STATE_SUSPENDED;
        }
 
        /* HDMI must be enabled before LCDC configuration */

diff --git a/drivers/video/sh_mobile_lcdcfb.h b/drivers/video/sh_mobile_lcdcfb.h
index b2cb8e6..6fb956c 100644 (file)
--- a/drivers/video/sh_mobile_lcdcfb.h
+++ b/drivers/video/sh_mobile_lcdcfb.h
@@ -21,6 +21,9 @@ struct sh_mobile_lcdc_entity;
 struct sh_mobile_lcdc_priv;
 struct sh_mobile_lcdc_chan;
 
+#define SH_MOBILE_LCDC_DISPLAY_DISCONNECTED    0
+#define SH_MOBILE_LCDC_DISPLAY_CONNECTED       1
+
 struct sh_mobile_lcdc_entity_ops {
        /* Display */
        int (*display_on)(struct sh_mobile_lcdc_entity *entity);