drm/tidss: Don't use drm_device->dev_private

Upcasting using a container_of macro is more typesafe, faster and
easier for the compiler to optimize.
Tested-by: Jyri Sarha <jsarha@ti.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Jyri Sarha <jsarha@ti.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200415074034.175360-25-daniel.vetter@ffwll.ch

drivers/gpu/drm/tidss/tidss_crtc.c

@@ -24,7 +24,7 @@
 static void tidss_crtc_finish_page_flip(struct tidss_crtc *tcrtc)
 {
 	struct drm_device *ddev = tcrtc->crtc.dev;
-	struct tidss_device *tidss = ddev->dev_private;
+	struct tidss_device *tidss = to_tidss(ddev);
 	struct drm_pending_vblank_event *event;
 	unsigned long flags;
 	bool busy;
@@ -88,7 +88,7 @@ static int tidss_crtc_atomic_check(struct drm_crtc *crtc,
 				   struct drm_crtc_state *state)
 {
 	struct drm_device *ddev = crtc->dev;
-	struct tidss_device *tidss = ddev->dev_private;
+	struct tidss_device *tidss = to_tidss(ddev);
 	struct dispc_device *dispc = tidss->dispc;
 	struct tidss_crtc *tcrtc = to_tidss_crtc(crtc);
 	u32 hw_videoport = tcrtc->hw_videoport;
@@ -165,7 +165,7 @@ static void tidss_crtc_atomic_flush(struct drm_crtc *crtc,
 {
 	struct tidss_crtc *tcrtc = to_tidss_crtc(crtc);
 	struct drm_device *ddev = crtc->dev;
-	struct tidss_device *tidss = ddev->dev_private;
+	struct tidss_device *tidss = to_tidss(ddev);
 	unsigned long flags;
 
 	dev_dbg(ddev->dev,
@@ -216,7 +216,7 @@ static void tidss_crtc_atomic_enable(struct drm_crtc *crtc,
 {
 	struct tidss_crtc *tcrtc = to_tidss_crtc(crtc);
 	struct drm_device *ddev = crtc->dev;
-	struct tidss_device *tidss = ddev->dev_private;
+	struct tidss_device *tidss = to_tidss(ddev);
 	const struct drm_display_mode *mode = &crtc->state->adjusted_mode;
 	unsigned long flags;
 	int r;
@@ -259,7 +259,7 @@ static void tidss_crtc_atomic_disable(struct drm_crtc *crtc,
 {
 	struct tidss_crtc *tcrtc = to_tidss_crtc(crtc);
 	struct drm_device *ddev = crtc->dev;
-	struct tidss_device *tidss = ddev->dev_private;
+	struct tidss_device *tidss = to_tidss(ddev);
 	unsigned long flags;
 
 	dev_dbg(ddev->dev, "%s, event %p\n", __func__, crtc->state->event);
@@ -295,7 +295,7 @@ enum drm_mode_status tidss_crtc_mode_valid(struct drm_crtc *crtc,
 {
 	struct tidss_crtc *tcrtc = to_tidss_crtc(crtc);
 	struct drm_device *ddev = crtc->dev;
-	struct tidss_device *tidss = ddev->dev_private;
+	struct tidss_device *tidss = to_tidss(ddev);
 
 	return dispc_vp_mode_valid(tidss->dispc, tcrtc->hw_videoport, mode);
 }
@@ -314,7 +314,7 @@ static const struct drm_crtc_helper_funcs tidss_crtc_helper_funcs = {
 static int tidss_crtc_enable_vblank(struct drm_crtc *crtc)
 {
 	struct drm_device *ddev = crtc->dev;
-	struct tidss_device *tidss = ddev->dev_private;
+	struct tidss_device *tidss = to_tidss(ddev);
 
 	dev_dbg(ddev->dev, "%s\n", __func__);
 
@@ -328,7 +328,7 @@ static int tidss_crtc_enable_vblank(struct drm_crtc *crtc)
 static void tidss_crtc_disable_vblank(struct drm_crtc *crtc)
 {
 	struct drm_device *ddev = crtc->dev;
-	struct tidss_device *tidss = ddev->dev_private;
+	struct tidss_device *tidss = to_tidss(ddev);
 
 	dev_dbg(ddev->dev, "%s\n", __func__);
 

drivers/gpu/drm/tidss/tidss_drv.c

@@ -147,8 +147,6 @@ static int tidss_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, tidss);
 
-	ddev->dev_private = tidss;
-
 	ret = dispc_init(tidss);
 	if (ret) {
 		dev_err(dev, "failed to initialize dispc: %d\n", ret);

drivers/gpu/drm/tidss/tidss_drv.h

@@ -33,6 +33,8 @@ struct tidss_device {
 	struct drm_atomic_state *saved_state;
 };
 
+#define to_tidss(__dev) container_of(__dev, struct tidss_device, ddev)
+
 int tidss_runtime_get(struct tidss_device *tidss);
 void tidss_runtime_put(struct tidss_device *tidss);
 

drivers/gpu/drm/tidss/tidss_irq.c

@@ -23,7 +23,7 @@ static void tidss_irq_update(struct tidss_device *tidss)
 void tidss_irq_enable_vblank(struct drm_crtc *crtc)
 {
 	struct drm_device *ddev = crtc->dev;
-	struct tidss_device *tidss = ddev->dev_private;
+	struct tidss_device *tidss = to_tidss(ddev);
 	struct tidss_crtc *tcrtc = to_tidss_crtc(crtc);
 	u32 hw_videoport = tcrtc->hw_videoport;
 	unsigned long flags;
@@ -38,7 +38,7 @@ void tidss_irq_enable_vblank(struct drm_crtc *crtc)
 void tidss_irq_disable_vblank(struct drm_crtc *crtc)
 {
 	struct drm_device *ddev = crtc->dev;
-	struct tidss_device *tidss = ddev->dev_private;
+	struct tidss_device *tidss = to_tidss(ddev);
 	struct tidss_crtc *tcrtc = to_tidss_crtc(crtc);
 	u32 hw_videoport = tcrtc->hw_videoport;
 	unsigned long flags;
@@ -53,7 +53,7 @@ void tidss_irq_disable_vblank(struct drm_crtc *crtc)
 irqreturn_t tidss_irq_handler(int irq, void *arg)
 {
 	struct drm_device *ddev = (struct drm_device *)arg;
-	struct tidss_device *tidss = ddev->dev_private;
+	struct tidss_device *tidss = to_tidss(ddev);
 	unsigned int id;
 	dispc_irq_t irqstatus;
 
@@ -95,7 +95,7 @@ void tidss_irq_resume(struct tidss_device *tidss)
 
 void tidss_irq_preinstall(struct drm_device *ddev)
 {
-	struct tidss_device *tidss = ddev->dev_private;
+	struct tidss_device *tidss = to_tidss(ddev);
 
 	spin_lock_init(&tidss->wait_lock);
 
@@ -109,7 +109,7 @@ void tidss_irq_preinstall(struct drm_device *ddev)
 
 int tidss_irq_postinstall(struct drm_device *ddev)
 {
-	struct tidss_device *tidss = ddev->dev_private;
+	struct tidss_device *tidss = to_tidss(ddev);
 	unsigned long flags;
 	unsigned int i;
 
@@ -138,7 +138,7 @@ int tidss_irq_postinstall(struct drm_device *ddev)
 
 void tidss_irq_uninstall(struct drm_device *ddev)
 {
-	struct tidss_device *tidss = ddev->dev_private;
+	struct tidss_device *tidss = to_tidss(ddev);
 
 	tidss_runtime_get(tidss);
 	dispc_set_irqenable(tidss->dispc, 0);

drivers/gpu/drm/tidss/tidss_kms.c

@@ -25,7 +25,7 @@
 static void tidss_atomic_commit_tail(struct drm_atomic_state *old_state)
 {
 	struct drm_device *ddev = old_state->dev;
-	struct tidss_device *tidss = ddev->dev_private;
+	struct tidss_device *tidss = to_tidss(ddev);
 
 	dev_dbg(ddev->dev, "%s\n", __func__);
 

drivers/gpu/drm/tidss/tidss_plane.c

@@ -22,7 +22,7 @@ static int tidss_plane_atomic_check(struct drm_plane *plane,
 				    struct drm_plane_state *state)
 {
 	struct drm_device *ddev = plane->dev;
-	struct tidss_device *tidss = ddev->dev_private;
+	struct tidss_device *tidss = to_tidss(ddev);
 	struct tidss_plane *tplane = to_tidss_plane(plane);
 	const struct drm_format_info *finfo;
 	struct drm_crtc_state *crtc_state;
@@ -101,7 +101,7 @@ static void tidss_plane_atomic_update(struct drm_plane *plane,
 				      struct drm_plane_state *old_state)
 {
 	struct drm_device *ddev = plane->dev;
-	struct tidss_device *tidss = ddev->dev_private;
+	struct tidss_device *tidss = to_tidss(ddev);
 	struct tidss_plane *tplane = to_tidss_plane(plane);
 	struct drm_plane_state *state = plane->state;
 	u32 hw_videoport;
@@ -133,7 +133,7 @@ static void tidss_plane_atomic_disable(struct drm_plane *plane,
 				       struct drm_plane_state *old_state)
 {
 	struct drm_device *ddev = plane->dev;
-	struct tidss_device *tidss = ddev->dev_private;
+	struct tidss_device *tidss = to_tidss(ddev);
 	struct tidss_plane *tplane = to_tidss_plane(plane);
 
 	dev_dbg(ddev->dev, "%s\n", __func__);