drm/meson: exclusively use the canvas provider module

Now that the DMC register range is no longer in the bindings, remove any
mention towards it and exclusively use the meson-canvas module.
Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190311105144.7276-3-mjourdan@baylibre.com

drivers/gpu/drm/meson/Makefile

 meson-drm-y := meson_drv.o meson_plane.o meson_crtc.o meson_venc_cvbs.o
-meson-drm-y += meson_viu.o meson_vpp.o meson_venc.o meson_vclk.o meson_canvas.o meson_overlay.o
+meson-drm-y += meson_viu.o meson_vpp.o meson_venc.o meson_vclk.o meson_overlay.o
 
 obj-$(CONFIG_DRM_MESON) += meson-drm.o
 obj-$(CONFIG_DRM_MESON_DW_HDMI) += meson_dw_hdmi.o

drivers/gpu/drm/meson/meson_canvas.c

-/*
- * Copyright (C) 2016 BayLibre, SAS
- * Author: Neil Armstrong <narmstrong@baylibre.com>
- * Copyright (C) 2015 Amlogic, Inc. All rights reserved.
- * Copyright (C) 2014 Endless Mobile
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include "meson_drv.h"
-#include "meson_canvas.h"
-#include "meson_registers.h"
-
-/**
- * DOC: Canvas
- *
- * CANVAS is a memory zone where physical memory frames information
- * are stored for the VIU to scanout.
- */
-
-/* DMC Registers */
-#define DMC_CAV_LUT_DATAL	0x48 /* 0x12 offset in data sheet */
-#define CANVAS_WIDTH_LBIT	29
-#define CANVAS_WIDTH_LWID       3
-#define DMC_CAV_LUT_DATAH	0x4c /* 0x13 offset in data sheet */
-#define CANVAS_WIDTH_HBIT       0
-#define CANVAS_HEIGHT_BIT       9
-#define CANVAS_BLKMODE_BIT      24
-#define CANVAS_ENDIAN_BIT	26
-#define DMC_CAV_LUT_ADDR	0x50 /* 0x14 offset in data sheet */
-#define CANVAS_LUT_WR_EN        (0x2 << 8)
-#define CANVAS_LUT_RD_EN        (0x1 << 8)
-
-void meson_canvas_setup(struct meson_drm *priv,
-			uint32_t canvas_index, uint32_t addr,
-			uint32_t stride, uint32_t height,
-			unsigned int wrap,
-			unsigned int blkmode,
-			unsigned int endian)
-{
-	unsigned int val;
-
-	regmap_write(priv->dmc, DMC_CAV_LUT_DATAL,
-		(((addr + 7) >> 3)) |
-		(((stride + 7) >> 3) << CANVAS_WIDTH_LBIT));
-
-	regmap_write(priv->dmc, DMC_CAV_LUT_DATAH,
-		((((stride + 7) >> 3) >> CANVAS_WIDTH_LWID) <<
-						CANVAS_WIDTH_HBIT) |
-		(height << CANVAS_HEIGHT_BIT) |
-		(wrap << 22) |
-		(blkmode << CANVAS_BLKMODE_BIT) |
-		(endian << CANVAS_ENDIAN_BIT));
-
-	regmap_write(priv->dmc, DMC_CAV_LUT_ADDR,
-			CANVAS_LUT_WR_EN | canvas_index);
-
-	/* Force a read-back to make sure everything is flushed. */
-	regmap_read(priv->dmc, DMC_CAV_LUT_DATAH, &val);
-}

drivers/gpu/drm/meson/meson_canvas.h

-/*
- * Copyright (C) 2016 BayLibre, SAS
- * Author: Neil Armstrong <narmstrong@baylibre.com>
- * Copyright (C) 2014 Endless Mobile
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see <http://www.gnu.org/licenses/>.
- */
-
-/* Canvas LUT Memory */
-
-#ifndef __MESON_CANVAS_H
-#define __MESON_CANVAS_H
-
-#define MESON_CANVAS_ID_OSD1	0x4e
-#define MESON_CANVAS_ID_VD1_0	0x60
-#define MESON_CANVAS_ID_VD1_1	0x61
-#define MESON_CANVAS_ID_VD1_2	0x62
-
-/* Canvas configuration. */
-#define MESON_CANVAS_WRAP_NONE	0x00
-#define	MESON_CANVAS_WRAP_X	0x01
-#define	MESON_CANVAS_WRAP_Y	0x02
-
-#define	MESON_CANVAS_BLKMODE_LINEAR	0x00
-#define	MESON_CANVAS_BLKMODE_32x32	0x01
-#define	MESON_CANVAS_BLKMODE_64x64	0x02
-
-#define MESON_CANVAS_ENDIAN_SWAP16	0x1
-#define MESON_CANVAS_ENDIAN_SWAP32	0x3
-#define MESON_CANVAS_ENDIAN_SWAP64	0x7
-#define MESON_CANVAS_ENDIAN_SWAP128	0xf
-
-void meson_canvas_setup(struct meson_drm *priv,
-			uint32_t canvas_index, uint32_t addr,
-			uint32_t stride, uint32_t height,
-			unsigned int wrap,
-			unsigned int blkmode,
-			unsigned int endian);
-
-#endif /* __MESON_CANVAS_H */

drivers/gpu/drm/meson/meson_crtc.c

@@ -37,7 +37,6 @@
 #include "meson_venc.h"
 #include "meson_vpp.h"
 #include "meson_viu.h"
-#include "meson_canvas.h"
 #include "meson_registers.h"
 
 /* CRTC definition */
@@ -214,16 +213,10 @@ void meson_crtc_irq(struct meson_drm *priv)
 		writel_relaxed(priv->viu.osd_sc_v_ctrl0,
 				priv->io_base + _REG(VPP_OSD_VSC_CTRL0));
 
-		if (priv->canvas)
 		meson_canvas_config(priv->canvas, priv->canvas_id_osd1,
 				priv->viu.osd1_addr, priv->viu.osd1_stride,
 				priv->viu.osd1_height, MESON_CANVAS_WRAP_NONE,
 				MESON_CANVAS_BLKMODE_LINEAR, 0);
-		else
-			meson_canvas_setup(priv, MESON_CANVAS_ID_OSD1,
-				priv->viu.osd1_addr, priv->viu.osd1_stride,
-				priv->viu.osd1_height, MESON_CANVAS_WRAP_NONE,
-				MESON_CANVAS_BLKMODE_LINEAR, 0);
 
 		/* Enable OSD1 */
 		writel_bits_relaxed(VPP_OSD1_POSTBLEND, VPP_OSD1_POSTBLEND,
@@ -237,7 +230,6 @@ void meson_crtc_irq(struct meson_drm *priv)
 
 		switch (priv->viu.vd1_planes) {
 		case 3:
-			if (priv->canvas)
 			meson_canvas_config(priv->canvas,
 					    priv->canvas_id_vd1_2,
 					    priv->viu.vd1_addr2,
@@ -246,17 +238,8 @@ void meson_crtc_irq(struct meson_drm *priv)
 					    MESON_CANVAS_WRAP_NONE,
 					    MESON_CANVAS_BLKMODE_LINEAR,
 					    MESON_CANVAS_ENDIAN_SWAP64);
-			else
-				meson_canvas_setup(priv, MESON_CANVAS_ID_VD1_2,
-						   priv->viu.vd1_addr2,
-						   priv->viu.vd1_stride2,
-						   priv->viu.vd1_height2,
-						   MESON_CANVAS_WRAP_NONE,
-						   MESON_CANVAS_BLKMODE_LINEAR,
-						   MESON_CANVAS_ENDIAN_SWAP64);
 		/* fallthrough */
 		case 2:
-			if (priv->canvas)
 			meson_canvas_config(priv->canvas,
 					    priv->canvas_id_vd1_1,
 					    priv->viu.vd1_addr1,
@@ -265,17 +248,8 @@ void meson_crtc_irq(struct meson_drm *priv)
 					    MESON_CANVAS_WRAP_NONE,
 					    MESON_CANVAS_BLKMODE_LINEAR,
 					    MESON_CANVAS_ENDIAN_SWAP64);
-			else
-				meson_canvas_setup(priv, MESON_CANVAS_ID_VD1_1,
-						   priv->viu.vd1_addr2,
-						   priv->viu.vd1_stride2,
-						   priv->viu.vd1_height2,
-						   MESON_CANVAS_WRAP_NONE,
-						   MESON_CANVAS_BLKMODE_LINEAR,
-						   MESON_CANVAS_ENDIAN_SWAP64);
 		/* fallthrough */
 		case 1:
-			if (priv->canvas)
 			meson_canvas_config(priv->canvas,
 					    priv->canvas_id_vd1_0,
 					    priv->viu.vd1_addr0,
@@ -284,14 +258,6 @@ void meson_crtc_irq(struct meson_drm *priv)
 					    MESON_CANVAS_WRAP_NONE,
 					    MESON_CANVAS_BLKMODE_LINEAR,
 					    MESON_CANVAS_ENDIAN_SWAP64);
-			else
-				meson_canvas_setup(priv, MESON_CANVAS_ID_VD1_0,
-						   priv->viu.vd1_addr2,
-						   priv->viu.vd1_stride2,
-						   priv->viu.vd1_height2,
-						   MESON_CANVAS_WRAP_NONE,
-						   MESON_CANVAS_BLKMODE_LINEAR,
-						   MESON_CANVAS_ENDIAN_SWAP64);
 		};
 
 		writel_relaxed(priv->viu.vd1_if0_gen_reg,

drivers/gpu/drm/meson/meson_drv.c

@@ -48,7 +48,6 @@
 #include "meson_vpp.h"
 #include "meson_viu.h"
 #include "meson_venc.h"
-#include "meson_canvas.h"
 #include "meson_registers.h"
 
 #define DRIVER_NAME "meson"
@@ -231,7 +230,11 @@ static int meson_drv_bind_master(struct device *dev, bool has_components)
 	}
 
 	priv->canvas = meson_canvas_get(dev);
-	if (!IS_ERR(priv->canvas)) {
+	if (IS_ERR(priv->canvas)) {
+		ret = PTR_ERR(priv->canvas);
+		goto free_drm;
+	}
+
 	ret = meson_canvas_alloc(priv->canvas, &priv->canvas_id_osd1);
 	if (ret)
 		goto free_drm;
@@ -253,29 +256,6 @@ static int meson_drv_bind_master(struct device *dev, bool has_components)
 		meson_canvas_free(priv->canvas, priv->canvas_id_vd1_1);
 		goto free_drm;
 	}
-	} else {
-		priv->canvas = NULL;
-
-		res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dmc");
-		if (!res) {
-			ret = -EINVAL;
-			goto free_drm;
-		}
-		/* Simply ioremap since it may be a shared register zone */
-		regs = devm_ioremap(dev, res->start, resource_size(res));
-		if (!regs) {
-			ret = -EADDRNOTAVAIL;
-			goto free_drm;
-		}
-
-		priv->dmc = devm_regmap_init_mmio(dev, regs,
-						  &meson_regmap_config);
-		if (IS_ERR(priv->dmc)) {
-			dev_err(&pdev->dev, "Couldn't create the DMC regmap\n");
-			ret = PTR_ERR(priv->dmc);
-			goto free_drm;
-		}
-	}
 
 	priv->vsync_irq = platform_get_irq(pdev, 0);
 

drivers/gpu/drm/meson/meson_drv.h

@@ -29,7 +29,6 @@ struct meson_drm {
 	struct device *dev;
 	void __iomem *io_base;
 	struct regmap *hhi;
-	struct regmap *dmc;
 	int vsync_irq;
 
 	struct meson_canvas *canvas;

drivers/gpu/drm/meson/meson_overlay.c

@@ -22,7 +22,6 @@
 #include "meson_overlay.h"
 #include "meson_vpp.h"
 #include "meson_viu.h"
-#include "meson_canvas.h"
 #include "meson_registers.h"
 
 /* VD1_IF0_GEN_REG */
@@ -350,13 +349,6 @@ static void meson_overlay_atomic_update(struct drm_plane *plane,
 
 	DRM_DEBUG_DRIVER("\n");
 
-	/* Fallback is canvas provider is not available */
-	if (!priv->canvas) {
-		priv->canvas_id_vd1_0 = MESON_CANVAS_ID_VD1_0;
-		priv->canvas_id_vd1_1 = MESON_CANVAS_ID_VD1_1;
-		priv->canvas_id_vd1_2 = MESON_CANVAS_ID_VD1_2;
-	}
-
 	interlace_mode = state->crtc->mode.flags & DRM_MODE_FLAG_INTERLACE;
 
 	spin_lock_irqsave(&priv->drm->event_lock, flags);

drivers/gpu/drm/meson/meson_plane.c

@@ -38,7 +38,6 @@
 #include "meson_plane.h"
 #include "meson_vpp.h"
 #include "meson_viu.h"
-#include "meson_canvas.h"
 #include "meson_registers.h"
 
 /* OSD_SCI_WH_M1 */
@@ -148,10 +147,7 @@ static void meson_plane_atomic_update(struct drm_plane *plane,
 				   (0xFF << OSD_GLOBAL_ALPHA_SHIFT) |
 				   OSD_BLK0_ENABLE;
 
-	if (priv->canvas)
 	canvas_id_osd1 = priv->canvas_id_osd1;
-	else
-		canvas_id_osd1 = MESON_CANVAS_ID_OSD1;
 
 	/* Set up BLK0 to point to the right canvas */
 	priv->viu.osd1_blk0_cfg[0] = ((canvas_id_osd1 << OSD_CANVAS_SEL) |

drivers/gpu/drm/meson/meson_viu.c

@@ -25,7 +25,6 @@
 #include "meson_viu.h"
 #include "meson_vpp.h"
 #include "meson_venc.h"
-#include "meson_canvas.h"
 #include "meson_registers.h"
 
 /**