drm/i915/dsi: Move poking of panel-enable GPIO to intel_dsi_vbt.c

[linux.git] / drivers / gpu / drm / i915 / display / intel_dsi_vbt.c

diff --git a/drivers/gpu/drm/i915/display/intel_dsi_vbt.c b/drivers/gpu/drm/i915/display/intel_dsi_vbt.c
index f90946c912eefb126907f8cd899a9e31e69483bc..8be7d6c507aa193e70e9b8ff9a594874520f878c 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_dsi_vbt.c
+++ b/drivers/gpu/drm/i915/display/intel_dsi_vbt.c
@@ -453,8 +453,8 @@ static const char *sequence_name(enum mipi_seq seq_id)
                return "(unknown)";
 }
 
-void intel_dsi_vbt_exec_sequence(struct intel_dsi *intel_dsi,
-                                enum mipi_seq seq_id)
+static void intel_dsi_vbt_exec(struct intel_dsi *intel_dsi,
+                              enum mipi_seq seq_id)
 {
        struct drm_i915_private *dev_priv = to_i915(intel_dsi->base.base.dev);
        const u8 *data;
@@ -519,6 +519,18 @@ void intel_dsi_vbt_exec_sequence(struct intel_dsi *intel_dsi,
        }
 }
 
+void intel_dsi_vbt_exec_sequence(struct intel_dsi *intel_dsi,
+                                enum mipi_seq seq_id)
+{
+       if (seq_id == MIPI_SEQ_POWER_ON && intel_dsi->gpio_panel)
+               gpiod_set_value_cansleep(intel_dsi->gpio_panel, 1);
+
+       intel_dsi_vbt_exec(intel_dsi, seq_id);
+
+       if (seq_id == MIPI_SEQ_POWER_OFF && intel_dsi->gpio_panel)
+               gpiod_set_value_cansleep(intel_dsi->gpio_panel, 0);
+}
+
 void intel_dsi_msleep(struct intel_dsi *intel_dsi, int msec)
 {
        struct drm_i915_private *dev_priv = to_i915(intel_dsi->base.base.dev);
@@ -671,3 +683,33 @@ bool intel_dsi_vbt_init(struct intel_dsi *intel_dsi, u16 panel_id)
 
        return true;
 }
+
+/*
+ * On some BYT/CHT devs some sequences are incomplete and we need to manually
+ * control some GPIOs.
+ */
+void intel_dsi_vbt_gpio_init(struct intel_dsi *intel_dsi)
+{
+       struct drm_device *dev = intel_dsi->base.base.dev;
+       struct drm_i915_private *dev_priv = to_i915(dev);
+       struct mipi_config *mipi_config = dev_priv->vbt.dsi.config;
+
+       if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
+           mipi_config->pwm_blc == PPS_BLC_PMIC) {
+               intel_dsi->gpio_panel =
+                       gpiod_get(dev->dev, "panel", GPIOD_OUT_HIGH);
+
+               if (IS_ERR(intel_dsi->gpio_panel)) {
+                       DRM_ERROR("Failed to own gpio for panel control\n");
+                       intel_dsi->gpio_panel = NULL;
+               }
+       }
+}
+
+void intel_dsi_vbt_gpio_cleanup(struct intel_dsi *intel_dsi)
+{
+       if (intel_dsi->gpio_panel) {
+               gpiod_put(intel_dsi->gpio_panel);
+               intel_dsi->gpio_panel = NULL;
+       }
+}