[PATCH v3 1/4] drm: mxsfb: Wrap FIFO reset and comments into mxsfb_reset_block()

[PATCH v3 1/4] drm: mxsfb: Wrap FIFO reset and comments into mxsfb_reset_block()

[Marek Vasut]

Wrap FIFO reset and comments into mxsfb_reset_block(), this is a clean up.
No functional change.

Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Alexander Stein <alexander.stein@ew.tq-group.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Robby Cai <robby.cai@nxp.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Stefan Agner <stefan@agner.ch>
---
V2: Add RB from Lucas
V3: Rebase on latest next and discarded clock and irq cleanups
---
 drivers/gpu/drm/mxsfb/mxsfb_kms.c | 36 +++++++++++++++++--------------
 1 file changed, 20 insertions(+), 16 deletions(-)

diff --git a/drivers/gpu/drm/mxsfb/mxsfb_kms.c b/drivers/gpu/drm/mxsfb/mxsfb_kms.c
index 4cfb6c0016799..45cabe0960769 100644
--- a/drivers/gpu/drm/mxsfb/mxsfb_kms.c
+++ b/drivers/gpu/drm/mxsfb/mxsfb_kms.c
@@ -191,6 +191,12 @@ static int mxsfb_reset_block(struct mxsfb_drm_private *mxsfb)
 {
 	int ret;
 
+	/*
+	 * It seems, you can't re-program the controller if it is still
+	 * running. This may lead to shifted pictures (FIFO issue?), so
+	 * first stop the controller and drain its FIFOs.
+	 */
+
 	ret = clear_poll_bit(mxsfb->base + LCDC_CTRL, CTRL_SFTRST);
 	if (ret)
 		return ret;
@@ -201,7 +207,20 @@ static int mxsfb_reset_block(struct mxsfb_drm_private *mxsfb)
 	if (ret)
 		return ret;
 
-	return clear_poll_bit(mxsfb->base + LCDC_CTRL, CTRL_CLKGATE);
+	ret = clear_poll_bit(mxsfb->base + LCDC_CTRL, CTRL_CLKGATE);
+	if (ret)
+		return ret;
+
+	/* Clear the FIFOs */
+	writel(CTRL1_FIFO_CLEAR, mxsfb->base + LCDC_CTRL1 + REG_SET);
+	readl(mxsfb->base + LCDC_CTRL1);
+	writel(CTRL1_FIFO_CLEAR, mxsfb->base + LCDC_CTRL1 + REG_CLR);
+	readl(mxsfb->base + LCDC_CTRL1);
+
+	if (mxsfb->devdata->has_overlay)
+		writel(0, mxsfb->base + LCDC_AS_CTRL);
+
+	return 0;
 }
 
 static dma_addr_t mxsfb_get_fb_paddr(struct drm_plane *plane)
@@ -228,26 +247,11 @@ static void mxsfb_crtc_mode_set_nofb(struct mxsfb_drm_private *mxsfb,
 	u32 vdctrl0, vsync_pulse_len, hsync_pulse_len;
 	int err;
 
-	/*
-	 * It seems, you can't re-program the controller if it is still
-	 * running. This may lead to shifted pictures (FIFO issue?), so
-	 * first stop the controller and drain its FIFOs.
-	 */
-
 	/* Mandatory eLCDIF reset as per the Reference Manual */
 	err = mxsfb_reset_block(mxsfb);
 	if (err)
 		return;
 
-	/* Clear the FIFOs */
-	writel(CTRL1_FIFO_CLEAR, mxsfb->base + LCDC_CTRL1 + REG_SET);
-	readl(mxsfb->base + LCDC_CTRL1);
-	writel(CTRL1_FIFO_CLEAR, mxsfb->base + LCDC_CTRL1 + REG_CLR);
-	readl(mxsfb->base + LCDC_CTRL1);
-
-	if (mxsfb->devdata->has_overlay)
-		writel(0, mxsfb->base + LCDC_AS_CTRL);
-
 	mxsfb_set_formats(mxsfb, bus_format);
 
 	clk_set_rate(mxsfb->clk, m->crtc_clock * 1000);
-- 
2.35.1

[PATCH v3 2/4] drm: mxsfb: Replace mxsfb_get_fb_paddr() with drm_fb_cma_get_gem_addr()

[Marek Vasut]

Replace mxsfb_get_fb_paddr() with drm_fb_cma_get_gem_addr() to correctly handle
FB offset.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Alexander Stein <alexander.stein@ew.tq-group.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Robby Cai <robby.cai@nxp.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Stefan Agner <stefan@agner.ch>
---
V3: New patch
---
 drivers/gpu/drm/mxsfb/mxsfb_kms.c | 25 +++++++------------------
 1 file changed, 7 insertions(+), 18 deletions(-)

diff --git a/drivers/gpu/drm/mxsfb/mxsfb_kms.c b/drivers/gpu/drm/mxsfb/mxsfb_kms.c
index 45cabe0960769..6697a600b36f4 100644
--- a/drivers/gpu/drm/mxsfb/mxsfb_kms.c
+++ b/drivers/gpu/drm/mxsfb/mxsfb_kms.c
@@ -223,21 +223,6 @@ static int mxsfb_reset_block(struct mxsfb_drm_private *mxsfb)
 	return 0;
 }
 
-static dma_addr_t mxsfb_get_fb_paddr(struct drm_plane *plane)
-{
-	struct drm_framebuffer *fb = plane->state->fb;
-	struct drm_gem_cma_object *gem;
-
-	if (!fb)
-		return 0;
-
-	gem = drm_fb_cma_get_gem_obj(fb, 0);
-	if (!gem)
-		return 0;
-
-	return gem->paddr;
-}
-
 static void mxsfb_crtc_mode_set_nofb(struct mxsfb_drm_private *mxsfb,
 				     const u32 bus_format)
 {
@@ -350,6 +335,8 @@ static void mxsfb_crtc_atomic_enable(struct drm_crtc *crtc,
 				     struct drm_atomic_state *state)
 {
 	struct mxsfb_drm_private *mxsfb = to_mxsfb_drm_private(crtc->dev);
+	struct drm_plane_state *new_pstate = drm_atomic_get_new_plane_state(state,
+									    crtc->primary);
 	struct drm_bridge_state *bridge_state;
 	struct drm_device *drm = mxsfb->drm;
 	u32 bus_format = 0;
@@ -389,7 +376,7 @@ static void mxsfb_crtc_atomic_enable(struct drm_crtc *crtc,
 	mxsfb_crtc_mode_set_nofb(mxsfb, bus_format);
 
 	/* Write cur_buf as well to avoid an initial corrupt frame */
-	paddr = mxsfb_get_fb_paddr(crtc->primary);
+	paddr = drm_fb_cma_get_gem_addr(new_pstate->fb, new_pstate, 0);
 	if (paddr) {
 		writel(paddr, mxsfb->base + mxsfb->devdata->cur_buf);
 		writel(paddr, mxsfb->base + mxsfb->devdata->next_buf);
@@ -492,9 +479,11 @@ static void mxsfb_plane_primary_atomic_update(struct drm_plane *plane,
 					      struct drm_atomic_state *state)
 {
 	struct mxsfb_drm_private *mxsfb = to_mxsfb_drm_private(plane->dev);
+	struct drm_plane_state *new_pstate = drm_atomic_get_new_plane_state(state,
+									    plane);
 	dma_addr_t paddr;
 
-	paddr = mxsfb_get_fb_paddr(plane);
+	paddr = drm_fb_cma_get_gem_addr(new_pstate->fb, new_pstate, 0);
 	if (paddr)
 		writel(paddr, mxsfb->base + mxsfb->devdata->next_buf);
 }
@@ -510,7 +499,7 @@ static void mxsfb_plane_overlay_atomic_update(struct drm_plane *plane,
 	dma_addr_t paddr;
 	u32 ctrl;
 
-	paddr = mxsfb_get_fb_paddr(plane);
+	paddr = drm_fb_cma_get_gem_addr(new_pstate->fb, new_pstate, 0);
 	if (!paddr) {
 		writel(0, mxsfb->base + LCDC_AS_CTRL);
 		return;
-- 
2.35.1

Re: [PATCH v3 2/4] drm: mxsfb: Replace mxsfb_get_fb_paddr() with drm_fb_cma_get_gem_addr()

[Sam Ravnborg]

On Sun, Apr 17, 2022 at 04:07:58AM +0200, Marek Vasut wrote:
> Replace mxsfb_get_fb_paddr() with drm_fb_cma_get_gem_addr() to correctly handle
> FB offset.
> 
> Signed-off-by: Marek Vasut <marex@denx.de>
> Cc: Alexander Stein <alexander.stein@ew.tq-group.com>
> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> Cc: Lucas Stach <l.stach@pengutronix.de>
> Cc: Peng Fan <peng.fan@nxp.com>
> Cc: Robby Cai <robby.cai@nxp.com>
> Cc: Sam Ravnborg <sam@ravnborg.org>
> Cc: Stefan Agner <stefan@agner.ch>
Acked-by: Sam Ravnborg <sam@ravnborg.org>

[PATCH v3 3/4] drm: mxsfb: Factor out mxsfb_set_mode()

[Marek Vasut]

Pull mode registers programming from mxsfb_enable_controller() into
dedicated function mxsfb_set_mode(). This is a clean up. No functional
change.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Alexander Stein <alexander.stein@ew.tq-group.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Robby Cai <robby.cai@nxp.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Stefan Agner <stefan@agner.ch>
---
V2: No change
V3: Rebase on latest next and discarded clock and irq cleanups
---
 drivers/gpu/drm/mxsfb/mxsfb_kms.c | 96 +++++++++++++++++--------------
 1 file changed, 52 insertions(+), 44 deletions(-)

diff --git a/drivers/gpu/drm/mxsfb/mxsfb_kms.c b/drivers/gpu/drm/mxsfb/mxsfb_kms.c
index 6697a600b36f4..1f0f08eab8e74 100644
--- a/drivers/gpu/drm/mxsfb/mxsfb_kms.c
+++ b/drivers/gpu/drm/mxsfb/mxsfb_kms.c
@@ -96,6 +96,57 @@ static void mxsfb_set_formats(struct mxsfb_drm_private *mxsfb,
 	writel(ctrl, mxsfb->base + LCDC_CTRL);
 }
 
+static void mxsfb_set_mode(struct mxsfb_drm_private *mxsfb, u32 bus_flags)
+{
+	struct drm_display_mode *m = &mxsfb->crtc.state->adjusted_mode;
+	u32 vdctrl0, vsync_pulse_len, hsync_pulse_len;
+
+	writel(TRANSFER_COUNT_SET_VCOUNT(m->crtc_vdisplay) |
+	       TRANSFER_COUNT_SET_HCOUNT(m->crtc_hdisplay),
+	       mxsfb->base + mxsfb->devdata->transfer_count);
+
+	vsync_pulse_len = m->crtc_vsync_end - m->crtc_vsync_start;
+
+	vdctrl0 = VDCTRL0_ENABLE_PRESENT |	/* Always in DOTCLOCK mode */
+		  VDCTRL0_VSYNC_PERIOD_UNIT |
+		  VDCTRL0_VSYNC_PULSE_WIDTH_UNIT |
+		  VDCTRL0_SET_VSYNC_PULSE_WIDTH(vsync_pulse_len);
+	if (m->flags & DRM_MODE_FLAG_PHSYNC)
+		vdctrl0 |= VDCTRL0_HSYNC_ACT_HIGH;
+	if (m->flags & DRM_MODE_FLAG_PVSYNC)
+		vdctrl0 |= VDCTRL0_VSYNC_ACT_HIGH;
+	/* Make sure Data Enable is high active by default */
+	if (!(bus_flags & DRM_BUS_FLAG_DE_LOW))
+		vdctrl0 |= VDCTRL0_ENABLE_ACT_HIGH;
+	/*
+	 * DRM_BUS_FLAG_PIXDATA_DRIVE_ defines are controller centric,
+	 * controllers VDCTRL0_DOTCLK is display centric.
+	 * Drive on positive edge       -> display samples on falling edge
+	 * DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE -> VDCTRL0_DOTCLK_ACT_FALLING
+	 */
+	if (bus_flags & DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE)
+		vdctrl0 |= VDCTRL0_DOTCLK_ACT_FALLING;
+
+	writel(vdctrl0, mxsfb->base + LCDC_VDCTRL0);
+
+	/* Frame length in lines. */
+	writel(m->crtc_vtotal, mxsfb->base + LCDC_VDCTRL1);
+
+	/* Line length in units of clocks or pixels. */
+	hsync_pulse_len = m->crtc_hsync_end - m->crtc_hsync_start;
+	writel(set_hsync_pulse_width(mxsfb, hsync_pulse_len) |
+	       VDCTRL2_SET_HSYNC_PERIOD(m->crtc_htotal),
+	       mxsfb->base + LCDC_VDCTRL2);
+
+	writel(SET_HOR_WAIT_CNT(m->crtc_htotal - m->crtc_hsync_start) |
+	       SET_VERT_WAIT_CNT(m->crtc_vtotal - m->crtc_vsync_start),
+	       mxsfb->base + LCDC_VDCTRL3);
+
+	writel(SET_DOTCLK_H_VALID_DATA_CNT(m->hdisplay),
+	       mxsfb->base + LCDC_VDCTRL4);
+
+}
+
 static void mxsfb_enable_controller(struct mxsfb_drm_private *mxsfb)
 {
 	u32 reg;
@@ -229,7 +280,6 @@ static void mxsfb_crtc_mode_set_nofb(struct mxsfb_drm_private *mxsfb,
 	struct drm_device *drm = mxsfb->crtc.dev;
 	struct drm_display_mode *m = &mxsfb->crtc.state->adjusted_mode;
 	u32 bus_flags = mxsfb->connector->display_info.bus_flags;
-	u32 vdctrl0, vsync_pulse_len, hsync_pulse_len;
 	int err;
 
 	/* Mandatory eLCDIF reset as per the Reference Manual */
@@ -251,49 +301,7 @@ static void mxsfb_crtc_mode_set_nofb(struct mxsfb_drm_private *mxsfb,
 			     bus_flags);
 	DRM_DEV_DEBUG_DRIVER(drm->dev, "Mode flags: 0x%08X\n", m->flags);
 
-	writel(TRANSFER_COUNT_SET_VCOUNT(m->crtc_vdisplay) |
-	       TRANSFER_COUNT_SET_HCOUNT(m->crtc_hdisplay),
-	       mxsfb->base + mxsfb->devdata->transfer_count);
-
-	vsync_pulse_len = m->crtc_vsync_end - m->crtc_vsync_start;
-
-	vdctrl0 = VDCTRL0_ENABLE_PRESENT |	/* Always in DOTCLOCK mode */
-		  VDCTRL0_VSYNC_PERIOD_UNIT |
-		  VDCTRL0_VSYNC_PULSE_WIDTH_UNIT |
-		  VDCTRL0_SET_VSYNC_PULSE_WIDTH(vsync_pulse_len);
-	if (m->flags & DRM_MODE_FLAG_PHSYNC)
-		vdctrl0 |= VDCTRL0_HSYNC_ACT_HIGH;
-	if (m->flags & DRM_MODE_FLAG_PVSYNC)
-		vdctrl0 |= VDCTRL0_VSYNC_ACT_HIGH;
-	/* Make sure Data Enable is high active by default */
-	if (!(bus_flags & DRM_BUS_FLAG_DE_LOW))
-		vdctrl0 |= VDCTRL0_ENABLE_ACT_HIGH;
-	/*
-	 * DRM_BUS_FLAG_PIXDATA_DRIVE_ defines are controller centric,
-	 * controllers VDCTRL0_DOTCLK is display centric.
-	 * Drive on positive edge       -> display samples on falling edge
-	 * DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE -> VDCTRL0_DOTCLK_ACT_FALLING
-	 */
-	if (bus_flags & DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE)
-		vdctrl0 |= VDCTRL0_DOTCLK_ACT_FALLING;
-
-	writel(vdctrl0, mxsfb->base + LCDC_VDCTRL0);
-
-	/* Frame length in lines. */
-	writel(m->crtc_vtotal, mxsfb->base + LCDC_VDCTRL1);
-
-	/* Line length in units of clocks or pixels. */
-	hsync_pulse_len = m->crtc_hsync_end - m->crtc_hsync_start;
-	writel(set_hsync_pulse_width(mxsfb, hsync_pulse_len) |
-	       VDCTRL2_SET_HSYNC_PERIOD(m->crtc_htotal),
-	       mxsfb->base + LCDC_VDCTRL2);
-
-	writel(SET_HOR_WAIT_CNT(m->crtc_htotal - m->crtc_hsync_start) |
-	       SET_VERT_WAIT_CNT(m->crtc_vtotal - m->crtc_vsync_start),
-	       mxsfb->base + LCDC_VDCTRL3);
-
-	writel(SET_DOTCLK_H_VALID_DATA_CNT(m->hdisplay),
-	       mxsfb->base + LCDC_VDCTRL4);
+	mxsfb_set_mode(mxsfb, bus_flags);
 }
 
 static int mxsfb_crtc_atomic_check(struct drm_crtc *crtc,
-- 
2.35.1

Re: [PATCH v3 3/4] drm: mxsfb: Factor out mxsfb_set_mode()

[Sam Ravnborg]

On Sun, Apr 17, 2022 at 04:07:59AM +0200, Marek Vasut wrote:
> Pull mode registers programming from mxsfb_enable_controller() into
> dedicated function mxsfb_set_mode(). This is a clean up. No functional
> change.
> 
> Signed-off-by: Marek Vasut <marex@denx.de>
> Cc: Alexander Stein <alexander.stein@ew.tq-group.com>
> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> Cc: Lucas Stach <l.stach@pengutronix.de>
> Cc: Peng Fan <peng.fan@nxp.com>
> Cc: Robby Cai <robby.cai@nxp.com>
> Cc: Sam Ravnborg <sam@ravnborg.org>
> Cc: Stefan Agner <stefan@agner.ch>
Acked-by: Sam Ravnborg <sam@ravnborg.org>

[PATCH v3 4/4] drm: mxsfb: Reorder mxsfb_crtc_mode_set_nofb()

[Marek Vasut]

Reorder mxsfb_crtc_mode_set_nofb() such that all functions which perform
register IO are called from one single location in this function. This is
a clean up. No functional change.

Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Alexander Stein <alexander.stein@ew.tq-group.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Robby Cai <robby.cai@nxp.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Stefan Agner <stefan@agner.ch>
---
V2: Add RB from Lucas
V3: Rebase on latest next and discarded clock and irq cleanups
---
 drivers/gpu/drm/mxsfb/mxsfb_kms.c | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/mxsfb/mxsfb_kms.c b/drivers/gpu/drm/mxsfb/mxsfb_kms.c
index 1f0f08eab8e74..b7c70d269d2cb 100644
--- a/drivers/gpu/drm/mxsfb/mxsfb_kms.c
+++ b/drivers/gpu/drm/mxsfb/mxsfb_kms.c
@@ -282,15 +282,6 @@ static void mxsfb_crtc_mode_set_nofb(struct mxsfb_drm_private *mxsfb,
 	u32 bus_flags = mxsfb->connector->display_info.bus_flags;
 	int err;
 
-	/* Mandatory eLCDIF reset as per the Reference Manual */
-	err = mxsfb_reset_block(mxsfb);
-	if (err)
-		return;
-
-	mxsfb_set_formats(mxsfb, bus_format);
-
-	clk_set_rate(mxsfb->clk, m->crtc_clock * 1000);
-
 	if (mxsfb->bridge && mxsfb->bridge->timings)
 		bus_flags = mxsfb->bridge->timings->input_bus_flags;
 
@@ -301,6 +292,15 @@ static void mxsfb_crtc_mode_set_nofb(struct mxsfb_drm_private *mxsfb,
 			     bus_flags);
 	DRM_DEV_DEBUG_DRIVER(drm->dev, "Mode flags: 0x%08X\n", m->flags);
 
+	/* Mandatory eLCDIF reset as per the Reference Manual */
+	err = mxsfb_reset_block(mxsfb);
+	if (err)
+		return;
+
+	mxsfb_set_formats(mxsfb, bus_format);
+
+	clk_set_rate(mxsfb->clk, m->crtc_clock * 1000);
+
 	mxsfb_set_mode(mxsfb, bus_flags);
 }
 
-- 
2.35.1

Re: [PATCH v3 4/4] drm: mxsfb: Reorder mxsfb_crtc_mode_set_nofb()

[Sam Ravnborg]

On Sun, Apr 17, 2022 at 04:08:00AM +0200, Marek Vasut wrote:
> Reorder mxsfb_crtc_mode_set_nofb() such that all functions which perform
> register IO are called from one single location in this function. This is
> a clean up. No functional change.
> 
> Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
> Signed-off-by: Marek Vasut <marex@denx.de>
> Cc: Alexander Stein <alexander.stein@ew.tq-group.com>
> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> Cc: Lucas Stach <l.stach@pengutronix.de>
> Cc: Peng Fan <peng.fan@nxp.com>
> Cc: Robby Cai <robby.cai@nxp.com>
> Cc: Sam Ravnborg <sam@ravnborg.org>
> Cc: Stefan Agner <stefan@agner.ch>
Acked-by: Sam Ravnborg <sam@ravnborg.org>

Re: [PATCH v3 1/4] drm: mxsfb: Wrap FIFO reset and comments into mxsfb_reset_block()

[Sam Ravnborg]

On Sun, Apr 17, 2022 at 04:07:57AM +0200, Marek Vasut wrote:
> Wrap FIFO reset and comments into mxsfb_reset_block(), this is a clean up.
> No functional change.
> 
> Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
> Signed-off-by: Marek Vasut <marex@denx.de>
> Cc: Alexander Stein <alexander.stein@ew.tq-group.com>
> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> Cc: Lucas Stach <l.stach@pengutronix.de>
> Cc: Peng Fan <peng.fan@nxp.com>
> Cc: Robby Cai <robby.cai@nxp.com>
> Cc: Sam Ravnborg <sam@ravnborg.org>
> Cc: Stefan Agner <stefan@agner.ch>
Acked-by: Sam Ravnborg <sam@ravnborg.org>

Re: [PATCH v3 1/4] drm: mxsfb: Wrap FIFO reset and comments into mxsfb_reset_block()

[Marek Vasut]

On 4/22/22 20:39, Sam Ravnborg wrote:
> On Sun, Apr 17, 2022 at 04:07:57AM +0200, Marek Vasut wrote:
>> Wrap FIFO reset and comments into mxsfb_reset_block(), this is a clean up.
>> No functional change.
>>
>> Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
>> Signed-off-by: Marek Vasut <marex@denx.de>
>> Cc: Alexander Stein <alexander.stein@ew.tq-group.com>
>> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
>> Cc: Lucas Stach <l.stach@pengutronix.de>
>> Cc: Peng Fan <peng.fan@nxp.com>
>> Cc: Robby Cai <robby.cai@nxp.com>
>> Cc: Sam Ravnborg <sam@ravnborg.org>
>> Cc: Stefan Agner <stefan@agner.ch>
> Acked-by: Sam Ravnborg <sam@ravnborg.org>

If that's OK with everyone, I will apply those soon.