@@ -20,6 +20,7 @@
#include <drm/drm_crtc.h>
#include <drm/drm_mipi_dsi.h>
#include <drm/drm_panel.h>
+#include <drm/drm_panel_helper.h>
/* Panel specific color-format bits */
#define COL_FMT_16BPP 0x55
@@ -205,7 +206,6 @@ struct rad_panel {
unsigned int num_supplies;
bool prepared;
- bool enabled;
};
static const struct drm_display_mode default_mode = {
@@ -267,9 +267,6 @@ static int rad_panel_prepare(struct drm_panel *panel)
struct rad_panel *rad = to_rad_panel(panel);
int ret;
- if (rad->prepared)
- return 0;
-
ret = regulator_bulk_enable(rad->num_supplies, rad->supplies);
if (ret)
return ret;
@@ -291,9 +288,6 @@ static int rad_panel_unprepare(struct drm_panel *panel)
struct rad_panel *rad = to_rad_panel(panel);
int ret;
- if (!rad->prepared)
- return 0;
-
/*
* Right after asserting the reset, we need to release it, so that the
* touch driver can have an active connection with the touch controller
@@ -322,9 +316,6 @@ static int rad_panel_enable(struct drm_panel *panel)
int color_format = color_format_from_dsi_format(dsi->format);
int ret;
- if (rad->enabled)
- return 0;
-
dsi->mode_flags |= MIPI_DSI_MODE_LPM;
ret = rad_panel_push_cmd_list(dsi);
@@ -389,8 +380,6 @@ static int rad_panel_enable(struct drm_panel *panel)
backlight_enable(rad->backlight);
- rad->enabled = true;
-
return 0;
fail:
@@ -406,9 +395,6 @@ static int rad_panel_disable(struct drm_panel *panel)
struct device *dev = &dsi->dev;
int ret;
- if (!rad->enabled)
- return 0;
-
dsi->mode_flags |= MIPI_DSI_MODE_LPM;
backlight_disable(rad->backlight);
@@ -429,8 +415,6 @@ static int rad_panel_disable(struct drm_panel *panel)
return ret;
}
- rad->enabled = false;
-
return 0;
}
@@ -633,8 +617,7 @@ static void rad_panel_shutdown(struct mipi_dsi_device *dsi)
{
struct rad_panel *rad = mipi_dsi_get_drvdata(dsi);
- rad_panel_disable(&rad->panel);
- rad_panel_unprepare(&rad->panel);
+ drm_panel_helper_shutdown(&rad->panel);
}
static const struct of_device_id rad_of_match[] = {
As talked about in commit d2aacaf07395 ("drm/panel: Check for already prepared/enabled in drm_panel"), we want to remove needless code from panel drivers that was storing and double-checking the prepared/enabled state. Even if someone was relying on the double-check before, that double-check is now in the core and not needed in individual drivers. The conversion of the rm67191 panel driver follows many of the other panel drivers but is separated out because it has a few differences that need to be called out. Like otm8009a, this panel also uses the "prepared" flag to prevent the backlight functions from running when the panel is powered off. This is probably not the safest thing to do but the old behavior was preserved. See the discussion in the patch ("drm/panel: otm8009a: Don't double check prepared/enabled"). Because of this, I've left the driver tracking "prepared" but removed its tracking of "enabled". This panel also used to directly call its disable/unprepare functions at shutdown time instead of calling into drm_panel. Now we're calling drm_panel_helper_shutdown() which in turn calls drm_panel_unprepare()/drm_panel_disable(). That paves the way if anyone wants to use a the panel follower APIs with this panel. Signed-off-by: Douglas Anderson <dianders@chromium.org> --- drivers/gpu/drm/panel/panel-raydium-rm67191.c | 21 ++----------------- 1 file changed, 2 insertions(+), 19 deletions(-)