OMAP: DSS2: DSI: ensure VDDS_DSI is disabled on exit

The panel drivers can leave the VDDS_DSI regulator enabled, even when
the panel is disabled, to ensure that the DSI pins are powered.

This patch ensures that VDDS_DSI is disabled on DSI module unload.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c
index fcda46c34d1..f89994d7b00 100644
--- a/drivers/video/omap2/dss/dsi.c
+++ b/drivers/video/omap2/dss/dsi.c
@@ -4090,6 +4090,11 @@ err1:
 static void dsi_exit(void)
 {
         if (dsi.vdds_dsi_reg != NULL) {
+                if (dsi.vdds_dsi_enabled) {
+                        regulator_disable(dsi.vdds_dsi_reg);
+                        dsi.vdds_dsi_enabled = false;
+                }
+
                 regulator_put(dsi.vdds_dsi_reg);
                 dsi.vdds_dsi_reg = NULL;
         }