From 3f751d6517d2108acd292c028f350a4494945538 Mon Sep 17 00:00:00 2001
From: Jani Nikula <jani.nikula@intel.com>
Date: Mon, 6 Mar 2017 16:31:26 +0200
Subject: [PATCH] drm/i915/dsi: stop using the drm_panel framework completely

Now that we've stopped using the drm_panel hooks, there aren't any
benefits left with using the drm_panel framework. Remove the rest of the
drm_panel use. No functional changes.

Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Bob Paauwe <bob.j.paauwe@intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Madhav Chauhan <madhav.chauhan@intel.com>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Bob Paauwe <bob.j.paauwe@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/6602e36641451952065092401bd6e6cfbe93e208.1488810382.git.jani.nikula@intel.com
---
 drivers/gpu/drm/i915/intel_dsi.c           | 14 ++---------
 drivers/gpu/drm/i915/intel_dsi.h           |  5 ++--
 drivers/gpu/drm/i915/intel_dsi_panel_vbt.c | 39 ++++++------------------------
 3 files changed, 11 insertions(+), 47 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
index 5a38112..b9ba2d5 100644
--- a/drivers/gpu/drm/i915/intel_dsi.c
+++ b/drivers/gpu/drm/i915/intel_dsi.c
@@ -28,7 +28,6 @@
 #include <drm/drm_crtc.h>
 #include <drm/drm_edid.h>
 #include <drm/i915_drm.h>
-#include <drm/drm_panel.h>
 #include <drm/drm_mipi_dsi.h>
 #include <linux/slab.h>
 #include <linux/gpio/consumer.h>
@@ -1642,12 +1641,6 @@ static void intel_dsi_encoder_destroy(struct drm_encoder *encoder)
 {
 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
 
-	if (intel_dsi->panel) {
-		drm_panel_detach(intel_dsi->panel);
-		/* XXX: Logically this call belongs in the panel driver. */
-		drm_panel_remove(intel_dsi->panel);
-	}
-
 	/* dispose of the gpios */
 	if (intel_dsi->gpio_panel)
 		gpiod_put(intel_dsi->gpio_panel);
@@ -1805,8 +1798,7 @@ void intel_dsi_init(struct drm_i915_private *dev_priv)
 		intel_dsi->dsi_hosts[port] = host;
 	}
 
-	intel_dsi->panel = intel_dsi_vbt_init(intel_dsi, MIPI_DSI_GENERIC_PANEL_ID);
-	if (!intel_dsi->panel) {
+	if (!intel_dsi_vbt_init(intel_dsi, MIPI_DSI_GENERIC_PANEL_ID)) {
 		DRM_DEBUG_KMS("no device found\n");
 		goto err;
 	}
@@ -1840,10 +1832,8 @@ void intel_dsi_init(struct drm_i915_private *dev_priv)
 
 	intel_connector_attach_encoder(intel_connector, intel_encoder);
 
-	drm_panel_attach(intel_dsi->panel, connector);
-
 	mutex_lock(&dev->mode_config.mutex);
-	intel_dsi_vbt_get_modes(intel_dsi->panel);
+	intel_dsi_vbt_get_modes(intel_dsi);
 	list_for_each_entry(scan, &connector->probed_modes, head) {
 		if ((scan->type & DRM_MODE_TYPE_PREFERRED)) {
 			fixed_mode = drm_mode_duplicate(dev, scan);
diff --git a/drivers/gpu/drm/i915/intel_dsi.h b/drivers/gpu/drm/i915/intel_dsi.h
index bd3ec02..0a3f133 100644
--- a/drivers/gpu/drm/i915/intel_dsi.h
+++ b/drivers/gpu/drm/i915/intel_dsi.h
@@ -39,7 +39,6 @@ struct intel_dsi_host;
 struct intel_dsi {
 	struct intel_encoder base;
 
-	struct drm_panel *panel;
 	struct intel_dsi_host *dsi_hosts[I915_MAX_PORTS];
 
 	/* GPIO Desc for CRC based Panel control */
@@ -146,8 +145,8 @@ u32 intel_dsi_get_pclk(struct intel_encoder *encoder, int pipe_bpp,
 void intel_dsi_reset_clocks(struct intel_encoder *encoder,
 			    enum port port);
 
-struct drm_panel *intel_dsi_vbt_init(struct intel_dsi *intel_dsi, u16 panel_id);
-int intel_dsi_vbt_get_modes(struct drm_panel *panel);
+bool intel_dsi_vbt_init(struct intel_dsi *intel_dsi, u16 panel_id);
+int intel_dsi_vbt_get_modes(struct intel_dsi *intel_dsi);
 enum mipi_dsi_pixel_format pixel_format_from_register_bits(u32 fmt);
 
 #endif /* _INTEL_DSI_H */
diff --git a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
index efe4845..af1783f 100644
--- a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
+++ b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
@@ -28,7 +28,6 @@
 #include <drm/drm_crtc.h>
 #include <drm/drm_edid.h>
 #include <drm/i915_drm.h>
-#include <drm/drm_panel.h>
 #include <linux/gpio/consumer.h>
 #include <linux/slab.h>
 #include <video/mipi_display.h>
@@ -38,16 +37,6 @@
 #include "intel_drv.h"
 #include "intel_dsi.h"
 
-struct vbt_panel {
-	struct drm_panel panel;
-	struct intel_dsi *intel_dsi;
-};
-
-static inline struct vbt_panel *to_vbt_panel(struct drm_panel *panel)
-{
-	return container_of(panel, struct vbt_panel, panel);
-}
-
 #define MIPI_TRANSFER_MODE_SHIFT	0
 #define MIPI_VIRTUAL_CHANNEL_SHIFT	1
 #define MIPI_PORT_SHIFT			3
@@ -492,36 +481,31 @@ void intel_dsi_exec_vbt_sequence(struct intel_dsi *intel_dsi,
 	}
 }
 
-int intel_dsi_vbt_get_modes(struct drm_panel *panel)
+int intel_dsi_vbt_get_modes(struct intel_dsi *intel_dsi)
 {
-	struct vbt_panel *vbt_panel = to_vbt_panel(panel);
-	struct intel_dsi *intel_dsi = vbt_panel->intel_dsi;
+	struct intel_connector *connector = intel_dsi->attached_connector;
 	struct drm_device *dev = intel_dsi->base.base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
 	struct drm_display_mode *mode;
 
-	if (!panel->connector)
-		return 0;
-
 	mode = drm_mode_duplicate(dev, dev_priv->vbt.lfp_lvds_vbt_mode);
 	if (!mode)
 		return 0;
 
 	mode->type |= DRM_MODE_TYPE_PREFERRED;
 
-	drm_mode_probed_add(panel->connector, mode);
+	drm_mode_probed_add(&connector->base, mode);
 
 	return 1;
 }
 
-struct drm_panel *intel_dsi_vbt_init(struct intel_dsi *intel_dsi, u16 panel_id)
+bool intel_dsi_vbt_init(struct intel_dsi *intel_dsi, u16 panel_id)
 {
 	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;
 	struct mipi_pps_data *pps = dev_priv->vbt.dsi.pps;
 	struct drm_display_mode *mode = dev_priv->vbt.lfp_lvds_vbt_mode;
-	struct vbt_panel *vbt_panel;
 	u32 bpp;
 	u32 tlpx_ns, extra_byte_count, bitrate, tlpx_ui;
 	u32 ui_num, ui_den;
@@ -584,7 +568,7 @@ struct drm_panel *intel_dsi_vbt_init(struct intel_dsi *intel_dsi, u16 panel_id)
 			if (mipi_config->target_burst_mode_freq <
 								computed_ddr) {
 				DRM_ERROR("Burst mode freq is less than computed\n");
-				return NULL;
+				return false;
 			}
 
 			burst_mode_ratio = DIV_ROUND_UP(
@@ -594,7 +578,7 @@ struct drm_panel *intel_dsi_vbt_init(struct intel_dsi *intel_dsi, u16 panel_id)
 			pclk = DIV_ROUND_UP(pclk * burst_mode_ratio, 100);
 		} else {
 			DRM_ERROR("Burst mode target is not set\n");
-			return NULL;
+			return false;
 		}
 	} else
 		burst_mode_ratio = 100;
@@ -805,19 +789,10 @@ struct drm_panel *intel_dsi_vbt_init(struct intel_dsi *intel_dsi, u16 panel_id)
 	intel_dsi->panel_off_delay = pps->panel_off_delay / 10;
 	intel_dsi->panel_pwr_cycle_delay = pps->panel_power_cycle_delay / 10;
 
-	/* This is cheating a bit with the cleanup. */
-	vbt_panel = devm_kzalloc(dev->dev, sizeof(*vbt_panel), GFP_KERNEL);
-	if (!vbt_panel)
-		return NULL;
-
-	vbt_panel->intel_dsi = intel_dsi;
-	drm_panel_init(&vbt_panel->panel);
-	drm_panel_add(&vbt_panel->panel);
-
 	/* a regular driver would get the device in probe */
 	for_each_dsi_port(port, intel_dsi->ports) {
 		mipi_dsi_attach(intel_dsi->dsi_hosts[port]->device);
 	}
 
-	return &vbt_panel->panel;
+	return true;
 }
-- 
2.7.4