Adding upstream version 4.19.249.upstream/4.19.249

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

1 files changed, 204 insertions, 0 deletions

diff --git a/drivers/media/platform/ti-vpe/csc.c b/drivers/media/platform/ti-vpe/csc.c
new file mode 100644
index 000000000..44b8465cf
--- /dev/null
+++ b/drivers/media/platform/ti-vpe/csc.c
@@ -0,0 +1,204 @@
+/*
+ * Color space converter library
+ *
+ * Copyright (c) 2013 Texas Instruments Inc.
+ *
+ * David Griego, <dagriego@biglakesoftware.com>
+ * Dale Farnsworth, <dale@farnsworth.org>
+ * Archit Taneja, <archit@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ */
+
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/videodev2.h>
+
+#include "csc.h"
+
+/*
+ * 16 coefficients in the order:
+ * a0, b0, c0, a1, b1, c1, a2, b2, c2, d0, d1, d2
+ * (we may need to pass non-default values from user space later on, we might
+ * need to make the coefficient struct more easy to populate)
+ */
+struct colorspace_coeffs {
+	u16	sd[12];
+	u16	hd[12];
+};
+
+/* VIDEO_RANGE: limited range, GRAPHICS_RANGE: full range */
+#define	CSC_COEFFS_VIDEO_RANGE_Y2R	0
+#define	CSC_COEFFS_GRAPHICS_RANGE_Y2R	1
+#define	CSC_COEFFS_VIDEO_RANGE_R2Y	2
+#define	CSC_COEFFS_GRAPHICS_RANGE_R2Y	3
+
+/* default colorspace coefficients */
+static struct colorspace_coeffs colorspace_coeffs[4] = {
+	[CSC_COEFFS_VIDEO_RANGE_Y2R] = {
+		{
+			/* SDTV */
+			0x0400, 0x0000, 0x057D, 0x0400, 0x1EA7, 0x1D35,
+			0x0400, 0x06EF, 0x1FFE, 0x0D40, 0x0210, 0x0C88,
+		},
+		{
+			/* HDTV */
+			0x0400, 0x0000, 0x0629, 0x0400, 0x1F45, 0x1E2B,
+			0x0400, 0x0742, 0x0000, 0x0CEC, 0x0148, 0x0C60,
+		},
+	},
+	[CSC_COEFFS_GRAPHICS_RANGE_Y2R] = {
+		{
+			/* SDTV */
+			0x04A8, 0x1FFE, 0x0662, 0x04A8, 0x1E6F, 0x1CBF,
+			0x04A8, 0x0812, 0x1FFF, 0x0C84, 0x0220, 0x0BAC,
+		},
+		{
+			/* HDTV */
+			0x04A8, 0x0000, 0x072C, 0x04A8, 0x1F26, 0x1DDE,
+			0x04A8, 0x0873, 0x0000, 0x0C20, 0x0134, 0x0B7C,
+		},
+	},
+	[CSC_COEFFS_VIDEO_RANGE_R2Y] = {
+		{
+			/* SDTV */
+			0x0132, 0x0259, 0x0075, 0x1F50, 0x1EA5, 0x020B,
+			0x020B, 0x1E4A, 0x1FAB, 0x0000, 0x0200, 0x0200,
+		},
+		{
+			/* HDTV */
+			0x00DA, 0x02DC, 0x004A, 0x1F88, 0x1E6C, 0x020C,
+			0x020C, 0x1E24, 0x1FD0, 0x0000, 0x0200, 0x0200,
+		},
+	},
+	[CSC_COEFFS_GRAPHICS_RANGE_R2Y] = {
+		{
+			/* SDTV */
+			0x0107, 0x0204, 0x0064, 0x1F68, 0x1ED6, 0x01C2,
+			0x01C2, 0x1E87, 0x1FB7, 0x0040, 0x0200, 0x0200,
+		},
+		{
+			/* HDTV */
+			0x04A8, 0x0000, 0x072C, 0x04A8, 0x1F26, 0x1DDE,
+			0x04A8, 0x0873, 0x0000, 0x0C20, 0x0134, 0x0B7C,
+		},
+	},
+};
+
+void csc_dump_regs(struct csc_data *csc)
+{
+	struct device *dev = &csc->pdev->dev;
+
+#define DUMPREG(r) dev_dbg(dev, "%-35s %08x\n", #r, \
+	ioread32(csc->base + CSC_##r))
+
+	dev_dbg(dev, "CSC Registers @ %pa:\n", &csc->res->start);
+
+	DUMPREG(CSC00);
+	DUMPREG(CSC01);
+	DUMPREG(CSC02);
+	DUMPREG(CSC03);
+	DUMPREG(CSC04);
+	DUMPREG(CSC05);
+
+#undef DUMPREG
+}
+EXPORT_SYMBOL(csc_dump_regs);
+
+void csc_set_coeff_bypass(struct csc_data *csc, u32 *csc_reg5)
+{
+	*csc_reg5 |= CSC_BYPASS;
+}
+EXPORT_SYMBOL(csc_set_coeff_bypass);
+
+/*
+ * set the color space converter coefficient shadow register values
+ */
+void csc_set_coeff(struct csc_data *csc, u32 *csc_reg0,
+		enum v4l2_colorspace src_colorspace,
+		enum v4l2_colorspace dst_colorspace)
+{
+	u32 *csc_reg5 = csc_reg0 + 5;
+	u32 *shadow_csc = csc_reg0;
+	struct colorspace_coeffs *sd_hd_coeffs;
+	u16 *coeff, *end_coeff;
+	enum v4l2_colorspace yuv_colorspace;
+	int sel = 0;
+
+	/*
+	 * support only graphics data range(full range) for now, a control ioctl
+	 * would be nice here
+	 */
+	/* Y2R */
+	if (dst_colorspace == V4L2_COLORSPACE_SRGB &&
+			(src_colorspace == V4L2_COLORSPACE_SMPTE170M ||
+			src_colorspace == V4L2_COLORSPACE_REC709)) {
+		/* Y2R */
+		sel = 1;
+		yuv_colorspace = src_colorspace;
+	} else if ((dst_colorspace == V4L2_COLORSPACE_SMPTE170M ||
+			dst_colorspace == V4L2_COLORSPACE_REC709) &&
+			src_colorspace == V4L2_COLORSPACE_SRGB) {
+		/* R2Y */
+		sel = 3;
+		yuv_colorspace = dst_colorspace;
+	} else {
+		*csc_reg5 |= CSC_BYPASS;
+		return;
+	}
+
+	sd_hd_coeffs = &colorspace_coeffs[sel];
+
+	/* select between SD or HD coefficients */
+	if (yuv_colorspace == V4L2_COLORSPACE_SMPTE170M)
+		coeff = sd_hd_coeffs->sd;
+	else
+		coeff = sd_hd_coeffs->hd;
+
+	end_coeff = coeff + 12;
+
+	for (; coeff < end_coeff; coeff += 2)
+		*shadow_csc++ = (*(coeff + 1) << 16) | *coeff;
+}
+EXPORT_SYMBOL(csc_set_coeff);
+
+struct csc_data *csc_create(struct platform_device *pdev, const char *res_name)
+{
+	struct csc_data *csc;
+
+	dev_dbg(&pdev->dev, "csc_create\n");
+
+	csc = devm_kzalloc(&pdev->dev, sizeof(*csc), GFP_KERNEL);
+	if (!csc) {
+		dev_err(&pdev->dev, "couldn't alloc csc_data\n");
+		return ERR_PTR(-ENOMEM);
+	}
+
+	csc->pdev = pdev;
+
+	csc->res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
+						res_name);
+	if (csc->res == NULL) {
+		dev_err(&pdev->dev, "missing '%s' platform resources data\n",
+			res_name);
+		return ERR_PTR(-ENODEV);
+	}
+
+	csc->base = devm_ioremap_resource(&pdev->dev, csc->res);
+	if (IS_ERR(csc->base)) {
+		dev_err(&pdev->dev, "failed to ioremap\n");
+		return ERR_CAST(csc->base);
+	}
+
+	return csc;
+}
+EXPORT_SYMBOL(csc_create);
+
+MODULE_DESCRIPTION("TI VIP/VPE Color Space Converter");
+MODULE_AUTHOR("Texas Instruments Inc.");
+MODULE_LICENSE("GPL v2");