video: Add Meson Video Processing Unit Driver

This adds video output support for Amlogic GXBB/GXL/GXM chips.
The supported ports are CVBS and HDMI (based on DW_HDMI).

When using HDMI, only DMT modes are supported.

There is support for simple-framebuffer (CONFIG_VIDEO_DT_SIMPLEFB)

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Jorge Ramire-Ortiz <jramirez@baylibre.com>
Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com>
[narmstrong: fixed defines alignment in meson_canvas.c]
Reviewed-by: Anatolij Gustschin <agust@denx.de>

1 files changed, 97 insertions, 0 deletions

diff --git a/drivers/video/meson/meson_vpu.h b/drivers/video/meson/meson_vpu.h
new file mode 100644
index 00000000000..ef5f10eae30
--- /dev/null
+++ b/drivers/video/meson/meson_vpu.h
@@ -0,0 +1,97 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Amlogic Meson Video Processing Unit driver
+ *
+ * Copyright (c) 2018 BayLibre, SAS.
+ * Author: Neil Armstrong <narmstrong@baylibre.com>
+ */
+
+#ifndef __MESON_VPU_H__
+#define __MESON_VPU_H__
+
+#include <common.h>
+#include <dm.h>
+#include <video.h>
+#include <display.h>
+#include <linux/io.h>
+#include "meson_registers.h"
+
+enum {
+	/* Maximum size we support */
+	VPU_MAX_WIDTH		= 3840,
+	VPU_MAX_HEIGHT		= 2160,
+	VPU_MAX_LOG2_BPP	= VIDEO_BPP32,
+};
+
+enum vpu_compatible {
+	VPU_COMPATIBLE_GXBB = 0,
+	VPU_COMPATIBLE_GXL = 1,
+	VPU_COMPATIBLE_GXM = 2,
+};
+
+struct meson_vpu_priv {
+	struct udevice *dev;
+	void __iomem *io_base;
+	void __iomem *hhi_base;
+	void __iomem *dmc_base;
+};
+
+static inline bool meson_vpu_is_compatible(struct meson_vpu_priv *priv,
+					   enum vpu_compatible family)
+{
+	enum vpu_compatible compat = dev_get_driver_data(priv->dev);
+
+	return compat == family;
+}
+
+#define hhi_update_bits(offset, mask, value) \
+	writel_bits(mask, value, priv->hhi_base + offset)
+
+#define hhi_write(offset, value) \
+	writel(value, priv->hhi_base + offset)
+
+#define hhi_read(offset) \
+	readl(priv->hhi_base + offset)
+
+#define dmc_update_bits(offset, mask, value) \
+	writel_bits(mask, value, priv->dmc_base + offset)
+
+#define dmc_write(offset, value) \
+	writel(value, priv->dmc_base + offset)
+
+#define dmc_read(offset) \
+	readl(priv->dmc_base + offset)
+
+#define MESON_CANVAS_ID_OSD1	0x4e
+
+/* 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
+
+void meson_canvas_setup(struct meson_vpu_priv *priv,
+			u32 canvas_index, u32 addr,
+			u32 stride, u32 height,
+			unsigned int wrap,
+			unsigned int blkmode);
+
+/* Mux VIU/VPP to ENCI */
+#define MESON_VIU_VPP_MUX_ENCI	0x5
+/* Mux VIU/VPP to ENCP */
+#define MESON_VIU_VPP_MUX_ENCP	0xA
+
+void meson_vpp_setup_mux(struct meson_vpu_priv *priv, unsigned int mux);
+void meson_vpu_init(struct udevice *dev);
+void meson_vpu_setup_plane(struct udevice *dev, bool is_interlaced);
+bool meson_venc_hdmi_supported_mode(const struct display_timing *mode);
+void meson_vpu_setup_venc(struct udevice *dev,
+			  const struct display_timing *mode, bool is_cvbs);
+bool meson_vclk_dmt_supported_freq(struct meson_vpu_priv *priv,
+				   unsigned int freq);
+void meson_vpu_setup_vclk(struct udevice *dev,
+			  const struct display_timing *mode, bool is_cvbs);
+#endif