linux-kernel - [PATCH 04/11] drm/sun4i: tv: Get tcon and backend pointers from associated crtc

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Message-Id: <20170309100534.14023-5-wens@csie.org>
Date:   Thu,  9 Mar 2017 18:05:27 +0800
From:   Chen-Yu Tsai <wens@...e.org>
To:     Maxime Ripard <maxime.ripard@...e-electrons.com>,
        David Airlie <airlied@...ux.ie>
Cc:     Chen-Yu Tsai <wens@...e.org>, dri-devel@...ts.freedesktop.org,
        linux-sunxi@...glegroups.com, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 04/11] drm/sun4i: tv: Get tcon and backend pointers from associated crtc

The drm_encoder structure provides us with a pointer to the crtc
currently tied to the encoder. Subsequently we can extract the
tcon and backend pointers from our crtc structure, instead of
getting it directly from the sun4i_drv structure.

Signed-off-by: Chen-Yu Tsai <wens@...e.org>
---
 drivers/gpu/drm/sun4i/sun4i_tv.c | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/sun4i/sun4i_tv.c b/drivers/gpu/drm/sun4i/sun4i_tv.c
index 32ed5fdf0c4d..49c49431a053 100644
--- a/drivers/gpu/drm/sun4i/sun4i_tv.c
+++ b/drivers/gpu/drm/sun4i/sun4i_tv.c
@@ -23,6 +23,7 @@
 #include <drm/drm_panel.h>
 
 #include "sun4i_backend.h"
+#include "sun4i_crtc.h"
 #include "sun4i_drv.h"
 #include "sun4i_tcon.h"
 
@@ -350,8 +351,9 @@ static int sun4i_tv_atomic_check(struct drm_encoder *encoder,
 static void sun4i_tv_disable(struct drm_encoder *encoder)
 {
 	struct sun4i_tv *tv = drm_encoder_to_sun4i_tv(encoder);
-	struct sun4i_drv *drv = tv->drv;
-	struct sun4i_tcon *tcon = drv->tcon;
+	struct sun4i_crtc *crtc = drm_crtc_to_sun4i_crtc(encoder->crtc);
+	struct sun4i_tcon *tcon = crtc->tcon;
+	struct sun4i_backend *backend = crtc->backend;
 
 	DRM_DEBUG_DRIVER("Disabling the TV Output\n");
 
@@ -360,18 +362,19 @@ static void sun4i_tv_disable(struct drm_encoder *encoder)
 	regmap_update_bits(tv->regs, SUN4I_TVE_EN_REG,
 			   SUN4I_TVE_EN_ENABLE,
 			   0);
-	sun4i_backend_disable_color_correction(drv->backend);
+	sun4i_backend_disable_color_correction(backend);
 }
 
 static void sun4i_tv_enable(struct drm_encoder *encoder)
 {
 	struct sun4i_tv *tv = drm_encoder_to_sun4i_tv(encoder);
-	struct sun4i_drv *drv = tv->drv;
-	struct sun4i_tcon *tcon = drv->tcon;
+	struct sun4i_crtc *crtc = drm_crtc_to_sun4i_crtc(encoder->crtc);
+	struct sun4i_tcon *tcon = crtc->tcon;
+	struct sun4i_backend *backend = crtc->backend;
 
 	DRM_DEBUG_DRIVER("Enabling the TV Output\n");
 
-	sun4i_backend_apply_color_correction(drv->backend);
+	sun4i_backend_apply_color_correction(backend);
 
 	regmap_update_bits(tv->regs, SUN4I_TVE_EN_REG,
 			   SUN4I_TVE_EN_ENABLE,
@@ -385,8 +388,8 @@ static void sun4i_tv_mode_set(struct drm_encoder *encoder,
 			      struct drm_display_mode *adjusted_mode)
 {
 	struct sun4i_tv *tv = drm_encoder_to_sun4i_tv(encoder);
-	struct sun4i_drv *drv = tv->drv;
-	struct sun4i_tcon *tcon = drv->tcon;
+	struct sun4i_crtc *crtc = drm_crtc_to_sun4i_crtc(encoder->crtc);
+	struct sun4i_tcon *tcon = crtc->tcon;
 	const struct tv_mode *tv_mode = sun4i_tv_find_tv_by_mode(mode);
 
 	sun4i_tcon1_mode_set(tcon, mode);
-- 
2.11.0