linux-kernel - [PATCH v4 02/11] drm/sun4i: tcon: Move the muxing out of the mode set function

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Message-Id: <26f7a93141315cd6475a693646f261b8d37ddca2.1495900658.git-series.maxime.ripard@free-electrons.com>
Date:   Sat, 27 May 2017 18:09:27 +0200
From:   Maxime Ripard <maxime.ripard@...e-electrons.com>
To:     Chen-Yu Tsai <wens@...e.org>,
        Maxime Ripard <maxime.ripard@...e-electrons.com>
Cc:     Daniel Vetter <daniel.vetter@...el.com>,
        David Airlie <airlied@...ux.ie>,
        dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-sunxi@...glegroups.com, Hans Verkuil <hverkuil@...all.nl>
Subject: [PATCH v4 02/11] drm/sun4i: tcon: Move the muxing out of the mode set function

The muxing can actually happen on both channels on some SoCs, so it makes
more sense to just move it out of the sun4i_tcon1_mode_set function and
create a separate function that needs to be called by the encoders.

Let's do that and convert the existing drivers.

Signed-off-by: Maxime Ripard <maxime.ripard@...e-electrons.com>
Acked-by: Chen-Yu Tsai <wens@...e.org>
---
 drivers/gpu/drm/sun4i/sun4i_rgb.c  |  1 +
 drivers/gpu/drm/sun4i/sun4i_tcon.c | 22 ++++++++++++++++------
 drivers/gpu/drm/sun4i/sun4i_tcon.h |  2 ++
 drivers/gpu/drm/sun4i/sun4i_tv.c   |  1 +
 4 files changed, 20 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/sun4i/sun4i_rgb.c b/drivers/gpu/drm/sun4i/sun4i_rgb.c
index c9bbb3b560a5..422b191faa77 100644
--- a/drivers/gpu/drm/sun4i/sun4i_rgb.c
+++ b/drivers/gpu/drm/sun4i/sun4i_rgb.c
@@ -175,6 +175,7 @@ static void sun4i_rgb_encoder_mode_set(struct drm_encoder *encoder,
 	struct sun4i_tcon *tcon = rgb->tcon;
 
 	sun4i_tcon0_mode_set(tcon, mode);
+	sun4i_tcon_set_mux(tcon, 0, encoder);
 
 	/* FIXME: This seems to be board specific */
 	clk_set_phase(tcon->dclk, 120);
diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c
index b79d3a277fbf..36e25f417dc3 100644
--- a/drivers/gpu/drm/sun4i/sun4i_tcon.c
+++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c
@@ -109,6 +109,22 @@ void sun4i_tcon_enable_vblank(struct sun4i_tcon *tcon, bool enable)
 }
 EXPORT_SYMBOL(sun4i_tcon_enable_vblank);
 
+void sun4i_tcon_set_mux(struct sun4i_tcon *tcon, int channel,
+			struct drm_encoder *encoder)
+{
+	if (!tcon->quirks->has_unknown_mux)
+		return;
+
+	if (channel != 1)
+		return;
+
+	/*
+	 * FIXME: Undocumented bits
+	 */
+	regmap_write(tcon->regs, SUN4I_TCON_MUX_CTRL_REG, 1);
+}
+EXPORT_SYMBOL(sun4i_tcon_set_mux);
+
 static int sun4i_tcon_get_clk_delay(struct drm_display_mode *mode,
 				    int channel)
 {
@@ -273,12 +289,6 @@ void sun4i_tcon1_mode_set(struct sun4i_tcon *tcon,
 	regmap_update_bits(tcon->regs, SUN4I_TCON_GCTL_REG,
 			   SUN4I_TCON_GCTL_IOMAP_MASK,
 			   SUN4I_TCON_GCTL_IOMAP_TCON1);
-
-	/*
-	 * FIXME: Undocumented bits
-	 */
-	if (tcon->quirks->has_unknown_mux)
-		regmap_write(tcon->regs, SUN4I_TCON_MUX_CTRL_REG, 1);
 }
 EXPORT_SYMBOL(sun4i_tcon1_mode_set);
 
diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.h b/drivers/gpu/drm/sun4i/sun4i_tcon.h
index d37e1e2ed60e..f60e0b4c6db8 100644
--- a/drivers/gpu/drm/sun4i/sun4i_tcon.h
+++ b/drivers/gpu/drm/sun4i/sun4i_tcon.h
@@ -196,6 +196,8 @@ void sun4i_tcon_enable_vblank(struct sun4i_tcon *tcon, bool enable);
 /* Mode Related Controls */
 void sun4i_tcon_switch_interlace(struct sun4i_tcon *tcon,
 				 bool enable);
+void sun4i_tcon_set_mux(struct sun4i_tcon *tcon, int channel,
+			struct drm_encoder *encoder);
 void sun4i_tcon0_mode_set(struct sun4i_tcon *tcon,
 			  struct drm_display_mode *mode);
 void sun4i_tcon1_mode_set(struct sun4i_tcon *tcon,
diff --git a/drivers/gpu/drm/sun4i/sun4i_tv.c b/drivers/gpu/drm/sun4i/sun4i_tv.c
index a9cad00d4ee8..338b9e5bb2a3 100644
--- a/drivers/gpu/drm/sun4i/sun4i_tv.c
+++ b/drivers/gpu/drm/sun4i/sun4i_tv.c
@@ -392,6 +392,7 @@ static void sun4i_tv_mode_set(struct drm_encoder *encoder,
 	const struct tv_mode *tv_mode = sun4i_tv_find_tv_by_mode(mode);
 
 	sun4i_tcon1_mode_set(tcon, mode);
+	sun4i_tcon_set_mux(tcon, 1, encoder);
 
 	/* Enable and map the DAC to the output */
 	regmap_update_bits(tv->regs, SUN4I_TVE_EN_REG,
-- 
git-series 0.9.1