diff mbox

[PATCH/RFC,387/390] drm/rcar-du: Add FBDEV emulation support

Message ID 1364525119-31791-388-git-send-email-horms+renesas@verge.net.au (mailing list archive)
State New, archived
Headers show

Commit Message

Simon Horman March 29, 2013, 2:45 a.m. UTC 
From: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

Use the FB CMA helpers to implement FBDEV emulation support. The VGA
connector status must be reported as connector_status_connected instead
of connector_status_unknown to be usable by the emulation layer.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
(cherry picked from commit c288d6d39e74c135e6368d6ffb3f339f3791ce45)

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
 drivers/gpu/drm/rcar-du/rcar_du_crtc.c |    5 +++++
 drivers/gpu/drm/rcar-du/rcar_du_drv.c  |   14 +++++++++++++
 drivers/gpu/drm/rcar-du/rcar_du_drv.h  |    2 ++
 drivers/gpu/drm/rcar-du/rcar_du_kms.c  |   36 +++++++++++++++++++++++++-------
 drivers/gpu/drm/rcar-du/rcar_du_vga.c  |    2 +-
 5 files changed, 50 insertions(+), 9 deletions(-)
diff mbox

Patch

diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
index db53c25..1b49b54 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
@@ -458,6 +458,10 @@  static void rcar_du_crtc_disable(struct drm_crtc *crtc)
 	rcar_du_plane_release(rcrtc->plane);
 }
 
+static void rcar_du_crtc_load_lut(struct drm_crtc *crtc)
+{
+}
+
 static const struct drm_crtc_helper_funcs crtc_helper_funcs = {
 	.dpms = rcar_du_crtc_dpms,
 	.mode_fixup = rcar_du_crtc_mode_fixup,
@@ -466,6 +470,7 @@  static const struct drm_crtc_helper_funcs crtc_helper_funcs = {
 	.mode_set = rcar_du_crtc_mode_set,
 	.mode_set_base = rcar_du_crtc_mode_set_base,
 	.disable = rcar_du_crtc_disable,
+	.load_lut = rcar_du_crtc_load_lut,
 };
 
 void rcar_du_crtc_cancel_page_flip(struct rcar_du_crtc *rcrtc,
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
index 0fb82bf..813d48c 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
@@ -21,6 +21,7 @@ 
 
 #include <drm/drmP.h>
 #include <drm/drm_crtc_helper.h>
+#include <drm/drm_fb_cma_helper.h>
 #include <drm/drm_gem_cma_helper.h>
 
 #include "rcar_du_crtc.h"
@@ -91,6 +92,11 @@  void rcar_du_put(struct rcar_du_device *rcdu)
 
 static int rcar_du_unload(struct drm_device *dev)
 {
+	struct rcar_du_device *rcdu = dev->dev_private;
+
+	if (rcdu->fbdev)
+		drm_fbdev_cma_fini(rcdu->fbdev);
+
 	drm_kms_helper_poll_fini(dev);
 	drm_mode_config_cleanup(dev);
 	drm_vblank_cleanup(dev);
@@ -195,6 +201,13 @@  static void rcar_du_preclose(struct drm_device *dev, struct drm_file *file)
 		rcar_du_crtc_cancel_page_flip(&rcdu->crtcs[i], file);
 }
 
+static void rcar_du_lastclose(struct drm_device *dev)
+{
+	struct rcar_du_device *rcdu = dev->dev_private;
+
+	drm_fbdev_cma_restore_mode(rcdu->fbdev);
+}
+
 static irqreturn_t rcar_du_irq(int irq, void *arg)
 {
 	struct drm_device *dev = arg;
@@ -244,6 +257,7 @@  static struct drm_driver rcar_du_driver = {
 	.load			= rcar_du_load,
 	.unload			= rcar_du_unload,
 	.preclose		= rcar_du_preclose,
+	.lastclose		= rcar_du_lastclose,
 	.irq_handler		= rcar_du_irq,
 	.get_vblank_counter	= drm_vblank_count,
 	.enable_vblank		= rcar_du_enable_vblank,
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.h b/drivers/gpu/drm/rcar-du/rcar_du_drv.h
index 73faf77..e761b27 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.h
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.h
@@ -24,6 +24,7 @@ 
 struct clk;
 struct device;
 struct drm_device;
+struct drm_fbdev_cma;
 
 struct rcar_du_device {
 	struct device *dev;
@@ -34,6 +35,7 @@  struct rcar_du_device {
 	unsigned int use_count;
 
 	struct drm_device *ddev;
+	struct drm_fbdev_cma *fbdev;
 
 	struct rcar_du_crtc crtcs[2];
 	unsigned int used_crtcs;
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
index b6cd53f..1cc27bb 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
@@ -162,24 +162,33 @@  rcar_du_fb_create(struct drm_device *dev, struct drm_file *file_priv,
 	return drm_fb_cma_create(dev, file_priv, mode_cmd);
 }
 
+static void rcar_du_output_poll_changed(struct drm_device *dev)
+{
+	struct rcar_du_device *rcdu = dev->dev_private;
+
+	drm_fbdev_cma_hotplug_event(rcdu->fbdev);
+}
+
 static const struct drm_mode_config_funcs rcar_du_mode_config_funcs = {
 	.fb_create = rcar_du_fb_create,
+	.output_poll_changed = rcar_du_output_poll_changed,
 };
 
 int rcar_du_modeset_init(struct rcar_du_device *rcdu)
 {
 	struct drm_device *dev = rcdu->ddev;
 	struct drm_encoder *encoder;
+	struct drm_fbdev_cma *fbdev;
 	unsigned int i;
 	int ret;
 
-	drm_mode_config_init(rcdu->ddev);
+	drm_mode_config_init(dev);
 
-	rcdu->ddev->mode_config.min_width = 0;
-	rcdu->ddev->mode_config.min_height = 0;
-	rcdu->ddev->mode_config.max_width = 4095;
-	rcdu->ddev->mode_config.max_height = 2047;
-	rcdu->ddev->mode_config.funcs = &rcar_du_mode_config_funcs;
+	dev->mode_config.min_width = 0;
+	dev->mode_config.min_height = 0;
+	dev->mode_config.max_width = 4095;
+	dev->mode_config.max_height = 2047;
+	dev->mode_config.funcs = &rcar_du_mode_config_funcs;
 
 	ret = rcar_du_plane_init(rcdu);
 	if (ret < 0)
@@ -231,9 +240,20 @@  int rcar_du_modeset_init(struct rcar_du_device *rcdu)
 	if (ret < 0)
 		return ret;
 
-	drm_kms_helper_poll_init(rcdu->ddev);
+	drm_kms_helper_poll_init(dev);
+
+	drm_helper_disable_unused_functions(dev);
+
+	fbdev = drm_fbdev_cma_init(dev, 32, dev->mode_config.num_crtc,
+				   dev->mode_config.num_connector);
+	if (IS_ERR(fbdev))
+		return PTR_ERR(fbdev);
+
+#ifndef CONFIG_FRAMEBUFFER_CONSOLE
+	drm_fbdev_cma_restore_mode(fbdev);
+#endif
 
-	drm_helper_disable_unused_functions(rcdu->ddev);
+	rcdu->fbdev = fbdev;
 
 	return 0;
 }
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_vga.c b/drivers/gpu/drm/rcar-du/rcar_du_vga.c
index 2e488dd..f1ef3d7 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_vga.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_vga.c
@@ -49,7 +49,7 @@  static void rcar_du_vga_connector_destroy(struct drm_connector *connector)
 static enum drm_connector_status
 rcar_du_vga_connector_detect(struct drm_connector *connector, bool force)
 {
-	return connector_status_unknown;
+	return connector_status_connected;
 }
 
 static const struct drm_connector_funcs connector_funcs = {