drm/panel: himax-hx8394: Drop prepare/unprepare tracking

Drop the panel specific prepare/unprepare logic. This is now tracked
by the DRM stack [1].

[1] commit d2aacaf07395 ("drm/panel: Check for already prepared/enabled in
drm_panel")

Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20231204185719.569021-2-macroalpha82@gmail.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20231204185719.569021-2-macroalpha82@gmail.com

diff --git a/drivers/gpu/drm/panel/panel-himax-hx8394.c b/drivers/gpu/drm/panel/panel-himax-hx8394.c
index c73243d..3823ff3 100644 (file)
--- a/drivers/gpu/drm/panel/panel-himax-hx8394.c
+++ b/drivers/gpu/drm/panel/panel-himax-hx8394.c
@@ -68,7 +68,6 @@ struct hx8394 {
        struct gpio_desc *reset_gpio;
        struct regulator *vcc;
        struct regulator *iovcc;
-       bool prepared;
 
        const struct hx8394_panel_desc *desc;
 };
@@ -262,16 +261,11 @@ static int hx8394_unprepare(struct drm_panel *panel)
 {
        struct hx8394 *ctx = panel_to_hx8394(panel);
 
-       if (!ctx->prepared)
-               return 0;
-
        gpiod_set_value_cansleep(ctx->reset_gpio, 1);
 
        regulator_disable(ctx->iovcc);
        regulator_disable(ctx->vcc);
 
-       ctx->prepared = false;
-
        return 0;
 }
 
@@ -280,9 +274,6 @@ static int hx8394_prepare(struct drm_panel *panel)
        struct hx8394 *ctx = panel_to_hx8394(panel);
        int ret;
 
-       if (ctx->prepared)
-               return 0;
-
        gpiod_set_value_cansleep(ctx->reset_gpio, 1);
 
        ret = regulator_enable(ctx->vcc);
@@ -301,8 +292,6 @@ static int hx8394_prepare(struct drm_panel *panel)
 
        msleep(180);
 
-       ctx->prepared = true;
-
        return 0;
 
 disable_vcc: