[PATCH 07/15] drm/exynos: dsi: Add support for panel prepare and unprepare routines

[Ajay Kumar]

Modify exynos_dsi driver to support the new panel calls:
prepare and unprepare.

Signed-off-by: Ajay Kumar <ajaykumar.rs at samsung.com>
---
 drivers/gpu/drm/exynos/exynos_drm_dsi.c |   12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c 
b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
index dc7c80b..4834932 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
@@ -1351,7 +1351,7 @@ static int exynos_dsi_enable(struct exynos_dsi *dsi)
        if (ret < 0)
                return ret;

-       ret = drm_panel_enable(dsi->panel);
+       ret = drm_panel_prepare(dsi->panel);
        if (ret < 0) {
                exynos_dsi_poweroff(dsi);
                return ret;
@@ -1360,6 +1360,13 @@ static int exynos_dsi_enable(struct exynos_dsi *dsi)
        exynos_dsi_set_display_mode(dsi);
        exynos_dsi_set_display_enable(dsi, true);

+       ret = drm_panel_enable(dsi->panel);
+       if (ret < 0) {
+               exynos_dsi_set_display_enable(dsi, false);
+               exynos_dsi_poweroff(dsi);
+               return ret;
+       }
+
        dsi->state |= DSIM_STATE_ENABLED;

        return 0;
@@ -1370,8 +1377,9 @@ static void exynos_dsi_disable(struct exynos_dsi *dsi)
        if (!(dsi->state & DSIM_STATE_ENABLED))
                return;

-       exynos_dsi_set_display_enable(dsi, false);
        drm_panel_disable(dsi->panel);
+       exynos_dsi_set_display_enable(dsi, false);
+       drm_panel_unprepare(dsi->panel);
        exynos_dsi_poweroff(dsi);

        dsi->state &= ~DSIM_STATE_ENABLED;
-- 
1.7.9.5