drm/i915/dsi: Make intel_dsi_enable/disable directly exec VBT sequences

The drm_panel_enable/disable and drm_panel_prepare/unprepare calls are
not fine grained enough to abstract all the different steps we need to
take (and VBT sequences we need to exec) properly. So simply remove the
panel _enable/disable and prepare/unprepare callbacks and instead
export intel_dsi_exec_vbt_sequence() from intel_dsi_panel_vbt.c
and call that from intel_dsi_enable/disable().

No functional changes.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Bob Paauwe <bob.j.paauwe@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/b4ca5185d4788d92df2ed60837a24b8962a8e8ba.1488273823.git.jani.nikula@intel.com

diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
index 4cca310..a4ff1e6 100644 (file)
--- a/drivers/gpu/drm/i915/intel_dsi.c
+++ b/drivers/gpu/drm/i915/intel_dsi.c
@@ -601,7 +601,10 @@ static void intel_dsi_pre_enable(struct intel_encoder *encoder,
        /* put device in ready state */
        intel_dsi_device_ready(encoder);
 
-       drm_panel_prepare(intel_dsi->panel);
+       intel_dsi_exec_vbt_sequence(intel_dsi, MIPI_SEQ_ASSERT_RESET);
+       intel_dsi_exec_vbt_sequence(intel_dsi, MIPI_SEQ_POWER_ON);
+       intel_dsi_exec_vbt_sequence(intel_dsi, MIPI_SEQ_DEASSERT_RESET);
+       intel_dsi_exec_vbt_sequence(intel_dsi, MIPI_SEQ_INIT_OTP);
 
        /* Enable port in pre-enable phase itself because as per hw team
         * recommendation, port should be enabled befor plane & pipe */
@@ -614,7 +617,8 @@ static void intel_dsi_pre_enable(struct intel_encoder *encoder,
                        dpi_send_cmd(intel_dsi, TURN_ON, false, port);
                msleep(100);
 
-               drm_panel_enable(intel_dsi->panel);
+               intel_dsi_exec_vbt_sequence(intel_dsi, MIPI_SEQ_DISPLAY_ON);
+               intel_dsi_exec_vbt_sequence(intel_dsi, MIPI_SEQ_BACKLIGHT_ON);
 
                intel_dsi_port_enable(encoder);
        }
@@ -689,7 +693,8 @@ static void intel_dsi_post_disable(struct intel_encoder *encoder,
         * if disable packets are sent before sending shutdown packet then in
         * some next enable sequence send turn on packet error is observed
         */
-       drm_panel_disable(intel_dsi->panel);
+       intel_dsi_exec_vbt_sequence(intel_dsi, MIPI_SEQ_BACKLIGHT_OFF);
+       intel_dsi_exec_vbt_sequence(intel_dsi, MIPI_SEQ_DISPLAY_OFF);
 
        intel_dsi_clear_device_ready(encoder);
 
@@ -714,7 +719,8 @@ static void intel_dsi_post_disable(struct intel_encoder *encoder,
                I915_WRITE(DSPCLK_GATE_D, val);
        }
 
-       drm_panel_unprepare(intel_dsi->panel);
+       intel_dsi_exec_vbt_sequence(intel_dsi, MIPI_SEQ_ASSERT_RESET);
+       intel_dsi_exec_vbt_sequence(intel_dsi, MIPI_SEQ_POWER_OFF);
 
        msleep(intel_dsi->panel_off_delay);
 

diff --git a/drivers/gpu/drm/i915/intel_dsi.h b/drivers/gpu/drm/i915/intel_dsi.h
index d567823..5486491 100644 (file)
--- a/drivers/gpu/drm/i915/intel_dsi.h
+++ b/drivers/gpu/drm/i915/intel_dsi.h
@@ -132,6 +132,9 @@ static inline struct intel_dsi *enc_to_intel_dsi(struct drm_encoder *encoder)
 
 void wait_for_dsi_fifo_empty(struct intel_dsi *intel_dsi, enum port port);
 
+void intel_dsi_exec_vbt_sequence(struct intel_dsi *intel_dsi,
+                                enum mipi_seq seq_id);
+
 bool intel_dsi_pll_is_enabled(struct drm_i915_private *dev_priv);
 int intel_compute_dsi_pll(struct intel_encoder *encoder,
                          struct intel_crtc_state *config);

diff --git a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
index 7daaa58..ab922b6 100644 (file)
--- a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
+++ b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
@@ -426,10 +426,9 @@ static const char *sequence_name(enum mipi_seq seq_id)
                return "(unknown)";
 }
 
-static void generic_exec_sequence(struct drm_panel *panel, enum mipi_seq seq_id)
+void intel_dsi_exec_vbt_sequence(struct intel_dsi *intel_dsi,
+                                enum mipi_seq seq_id)
 {
-       struct vbt_panel *vbt_panel = to_vbt_panel(panel);
-       struct intel_dsi *intel_dsi = vbt_panel->intel_dsi;
        struct drm_i915_private *dev_priv = to_i915(intel_dsi->base.base.dev);
        const u8 *data;
        fn_mipi_elem_exec mipi_elem_exec;
@@ -493,40 +492,6 @@ static void generic_exec_sequence(struct drm_panel *panel, enum mipi_seq seq_id)
        }
 }
 
-static int vbt_panel_prepare(struct drm_panel *panel)
-{
-       generic_exec_sequence(panel, MIPI_SEQ_ASSERT_RESET);
-       generic_exec_sequence(panel, MIPI_SEQ_POWER_ON);
-       generic_exec_sequence(panel, MIPI_SEQ_DEASSERT_RESET);
-       generic_exec_sequence(panel, MIPI_SEQ_INIT_OTP);
-
-       return 0;
-}
-
-static int vbt_panel_unprepare(struct drm_panel *panel)
-{
-       generic_exec_sequence(panel, MIPI_SEQ_ASSERT_RESET);
-       generic_exec_sequence(panel, MIPI_SEQ_POWER_OFF);
-
-       return 0;
-}
-
-static int vbt_panel_enable(struct drm_panel *panel)
-{
-       generic_exec_sequence(panel, MIPI_SEQ_DISPLAY_ON);
-       generic_exec_sequence(panel, MIPI_SEQ_BACKLIGHT_ON);
-
-       return 0;
-}
-
-static int vbt_panel_disable(struct drm_panel *panel)
-{
-       generic_exec_sequence(panel, MIPI_SEQ_BACKLIGHT_OFF);
-       generic_exec_sequence(panel, MIPI_SEQ_DISPLAY_OFF);
-
-       return 0;
-}
-
 static int vbt_panel_get_modes(struct drm_panel *panel)
 {
        struct vbt_panel *vbt_panel = to_vbt_panel(panel);
@@ -550,10 +515,6 @@ static int vbt_panel_get_modes(struct drm_panel *panel)
 }
 
 static const struct drm_panel_funcs vbt_panel_funcs = {
-       .disable = vbt_panel_disable,
-       .unprepare = vbt_panel_unprepare,
-       .prepare = vbt_panel_prepare,
-       .enable = vbt_panel_enable,
        .get_modes = vbt_panel_get_modes,
 };