@@ -1312,6 +1312,7 @@ static int exynos_dsi_init(struct exynos_dsi *dsi)
{
const struct exynos_dsi_driver_data *driver_data = dsi->driver_data;
+ pm_runtime_get_sync(dsi->dev);
exynos_dsi_reset(dsi);
exynos_dsi_enable_irq(dsi);
@@ -1388,7 +1389,6 @@ static void exynos_dsi_enable(struct drm_encoder *encoder)
ret = drm_panel_prepare(dsi->panel);
if (ret < 0) {
dsi->state &= ~DSIM_STATE_ENABLED;
- pm_runtime_put_sync(dsi->dev);
return;
}
@@ -1400,7 +1400,6 @@ static void exynos_dsi_enable(struct drm_encoder *encoder)
dsi->state &= ~DSIM_STATE_ENABLED;
exynos_dsi_set_display_enable(dsi, false);
drm_panel_unprepare(dsi->panel);
- pm_runtime_put_sync(dsi->dev);
return;
}
@@ -1422,7 +1421,10 @@ static void exynos_dsi_disable(struct drm_encoder *encoder)
dsi->state &= ~DSIM_STATE_ENABLED;
- pm_runtime_put_sync(dsi->dev);
+ if (dsi->state & DSIM_STATE_INITIALIZED) {
+ pm_runtime_put_sync(dsi->dev);
+ dsi->state &= ~DSIM_STATE_INITIALIZED;
+ }
}
static enum drm_connector_status
@@ -1566,9 +1568,6 @@ static ssize_t exynos_dsi_host_transfer(struct mipi_dsi_host *host,
struct exynos_dsi_transfer xfer;
int ret;
- if (!(dsi->state & DSIM_STATE_ENABLED))
- return -EINVAL;
-
if (!(dsi->state & DSIM_STATE_INITIALIZED)) {
ret = exynos_dsi_init(dsi);
if (ret)
In order to allow bridge drivers to use DSI transfers in their pre_enable callbacks, pm_runtime_get_sync() should be performed before exynos_dsi_enable(). DSIM_STATE_ENABLED flag now should not guard from calling dsi_host_transfer() before enabling. Signed-off-by: Maciej Purski <m.purski@samsung.com> --- drivers/gpu/drm/exynos/exynos_drm_dsi.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-)