Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 165 insertions, 0 deletions

diff --git a/drivers/gpu/drm/meson/meson_vpp.c b/drivers/gpu/drm/meson/meson_vpp.c
new file mode 100644
index 0000000000..5df1957c8e
--- /dev/null
+++ b/drivers/gpu/drm/meson/meson_vpp.c
@@ -0,0 +1,165 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2016 BayLibre, SAS
+ * Author: Neil Armstrong <narmstrong@baylibre.com>
+ * Copyright (C) 2015 Amlogic, Inc. All rights reserved.
+ * Copyright (C) 2014 Endless Mobile
+ */
+
+#include <linux/export.h>
+
+#include "meson_drv.h"
+#include "meson_registers.h"
+#include "meson_vpp.h"
+
+/**
+ * DOC: Video Post Processing
+ *
+ * VPP Handles all the Post Processing after the Scanout from the VIU
+ * We handle the following post processings :
+ *
+ * - Postblend, Blends the OSD1 only
+ *	We exclude OSD2, VS1, VS1 and Preblend output
+ * - Vertical OSD Scaler for OSD1 only, we disable vertical scaler and
+ *	use it only for interlace scanout
+ * - Intermediate FIFO with default Amlogic values
+ *
+ * What is missing :
+ *
+ * - Preblend for video overlay pre-scaling
+ * - OSD2 support for cursor framebuffer
+ * - Video pre-scaling before postblend
+ * - Full Vertical/Horizontal OSD scaling to support TV overscan
+ * - HDR conversion
+ */
+
+void meson_vpp_setup_mux(struct meson_drm *priv, unsigned int mux)
+{
+	writel(mux, priv->io_base + _REG(VPU_VIU_VENC_MUX_CTRL));
+}
+
+static unsigned int vpp_filter_coefs_4point_bspline[] = {
+	0x15561500, 0x14561600, 0x13561700, 0x12561800,
+	0x11551a00, 0x11541b00, 0x10541c00, 0x0f541d00,
+	0x0f531e00, 0x0e531f00, 0x0d522100, 0x0c522200,
+	0x0b522300, 0x0b512400, 0x0a502600, 0x0a4f2700,
+	0x094e2900, 0x084e2a00, 0x084d2b00, 0x074c2c01,
+	0x074b2d01, 0x064a2f01, 0x06493001, 0x05483201,
+	0x05473301, 0x05463401, 0x04453601, 0x04433702,
+	0x04423802, 0x03413a02, 0x03403b02, 0x033f3c02,
+	0x033d3d03
+};
+
+static void meson_vpp_write_scaling_filter_coefs(struct meson_drm *priv,
+						 const unsigned int *coefs,
+						 bool is_horizontal)
+{
+	int i;
+
+	writel_relaxed(is_horizontal ? VPP_SCALE_HORIZONTAL_COEF : 0,
+			priv->io_base + _REG(VPP_OSD_SCALE_COEF_IDX));
+	for (i = 0; i < 33; i++)
+		writel_relaxed(coefs[i],
+				priv->io_base + _REG(VPP_OSD_SCALE_COEF));
+}
+
+static const uint32_t vpp_filter_coefs_bicubic[] = {
+	0x00800000, 0x007f0100, 0xff7f0200, 0xfe7f0300,
+	0xfd7e0500, 0xfc7e0600, 0xfb7d0800, 0xfb7c0900,
+	0xfa7b0b00, 0xfa7a0dff, 0xf9790fff, 0xf97711ff,
+	0xf87613ff, 0xf87416fe, 0xf87218fe, 0xf8701afe,
+	0xf76f1dfd, 0xf76d1ffd, 0xf76b21fd, 0xf76824fd,
+	0xf76627fc, 0xf76429fc, 0xf7612cfc, 0xf75f2ffb,
+	0xf75d31fb, 0xf75a34fb, 0xf75837fa, 0xf7553afa,
+	0xf8523cfa, 0xf8503ff9, 0xf84d42f9, 0xf84a45f9,
+	0xf84848f8
+};
+
+static void meson_vpp_write_vd_scaling_filter_coefs(struct meson_drm *priv,
+						    const unsigned int *coefs,
+						    bool is_horizontal)
+{
+	int i;
+
+	writel_relaxed(is_horizontal ? VPP_SCALE_HORIZONTAL_COEF : 0,
+			priv->io_base + _REG(VPP_SCALE_COEF_IDX));
+	for (i = 0; i < 33; i++)
+		writel_relaxed(coefs[i],
+				priv->io_base + _REG(VPP_SCALE_COEF));
+}
+
+void meson_vpp_init(struct meson_drm *priv)
+{
+	/* set dummy data default YUV black */
+	if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXL))
+		writel_relaxed(0x108080, priv->io_base + _REG(VPP_DUMMY_DATA1));
+	else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXM)) {
+		writel_bits_relaxed(0xff << 16, 0xff << 16,
+				    priv->io_base + _REG(VIU_MISC_CTRL1));
+		writel_relaxed(VPP_PPS_DUMMY_DATA_MODE,
+			       priv->io_base + _REG(VPP_DOLBY_CTRL));
+		writel_relaxed(0x1020080,
+				priv->io_base + _REG(VPP_DUMMY_DATA1));
+		writel_relaxed(0x42020,
+				priv->io_base + _REG(VPP_DUMMY_DATA));
+	} else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A))
+		writel_relaxed(0xf, priv->io_base + _REG(DOLBY_PATH_CTRL));
+
+	/* Initialize vpu fifo control registers */
+	if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A))
+		writel_relaxed(VPP_OFIFO_SIZE_DEFAULT,
+			       priv->io_base + _REG(VPP_OFIFO_SIZE));
+	else
+		writel_bits_relaxed(VPP_OFIFO_SIZE_MASK, 0x77f,
+				    priv->io_base + _REG(VPP_OFIFO_SIZE));
+	writel_relaxed(VPP_POSTBLEND_HOLD_LINES(4) | VPP_PREBLEND_HOLD_LINES(4),
+		       priv->io_base + _REG(VPP_HOLD_LINES));
+
+	if (!meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A)) {
+		/* Turn off preblend */
+		writel_bits_relaxed(VPP_PREBLEND_ENABLE, 0,
+				    priv->io_base + _REG(VPP_MISC));
+
+		/* Turn off POSTBLEND */
+		writel_bits_relaxed(VPP_POSTBLEND_ENABLE, 0,
+				    priv->io_base + _REG(VPP_MISC));
+
+		/* Force all planes off */
+		writel_bits_relaxed(VPP_OSD1_POSTBLEND | VPP_OSD2_POSTBLEND |
+				    VPP_VD1_POSTBLEND | VPP_VD2_POSTBLEND |
+				    VPP_VD1_PREBLEND | VPP_VD2_PREBLEND, 0,
+				    priv->io_base + _REG(VPP_MISC));
+
+		/* Setup default VD settings */
+		writel_relaxed(4096,
+				priv->io_base + _REG(VPP_PREBLEND_VD1_H_START_END));
+		writel_relaxed(4096,
+				priv->io_base + _REG(VPP_BLEND_VD2_H_START_END));
+	}
+
+	/* Disable Scalers */
+	writel_relaxed(0, priv->io_base + _REG(VPP_OSD_SC_CTRL0));
+	writel_relaxed(0, priv->io_base + _REG(VPP_OSD_VSC_CTRL0));
+	writel_relaxed(0, priv->io_base + _REG(VPP_OSD_HSC_CTRL0));
+
+	/* Set horizontal/vertical bank length and enable video scale out */
+	writel_relaxed(VPP_VSC_BANK_LENGTH(4) | VPP_HSC_BANK_LENGTH(4) |
+		       VPP_SC_VD_EN_ENABLE,
+		       priv->io_base + _REG(VPP_SC_MISC));
+
+	/* Enable minus black level for vadj1 */
+	writel_relaxed(VPP_MINUS_BLACK_LVL_VADJ1_ENABLE,
+		       priv->io_base + _REG(VPP_VADJ_CTRL));
+
+	/* Write in the proper filter coefficients. */
+	meson_vpp_write_scaling_filter_coefs(priv,
+				vpp_filter_coefs_4point_bspline, false);
+	meson_vpp_write_scaling_filter_coefs(priv,
+				vpp_filter_coefs_4point_bspline, true);
+
+	/* Write the VD proper filter coefficients. */
+	meson_vpp_write_vd_scaling_filter_coefs(priv, vpp_filter_coefs_bicubic,
+						false);
+	meson_vpp_write_vd_scaling_filter_coefs(priv, vpp_filter_coefs_bicubic,
+						true);
+}