1 files changed, 62 insertions, 0 deletions
diff --git a/drivers/media/platform/qcom/camss/camss-format.h b/drivers/media/platform/qcom/camss/camss-format.h
new file mode 100644
index 000000000000..923a48c9c3fb
--- /dev/null
+++ b/drivers/media/platform/qcom/camss/camss-format.h
@@ -0,0 +1,62 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * camss-format.h
+ *
+ * Qualcomm MSM Camera Subsystem - Format helpers
+ *
+ * Copyright (c) 2023, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2023 Qualcomm Technologies, Inc.
+ */
+#ifndef __CAMSS_FORMAT_H__
+#define __CAMSS_FORMAT_H__
+
+#include <linux/types.h>
+
+#define PER_PLANE_DATA(plane, h_fract_num, h_fract_den, v_fract_num, v_fract_den, _bpp)         \
+	.hsub[(plane)].numerator	= (h_fract_num),                                        \
+	.hsub[(plane)].denominator	= (h_fract_den),                                        \
+	.vsub[(plane)].numerator	= (v_fract_num),                                        \
+	.vsub[(plane)].denominator	= (v_fract_den),                                        \
+	.bpp[(plane)]			= (_bpp)
+
+/*
+ * struct fract - Represents a fraction
+ * @numerator: Store the numerator part of the fraction
+ * @denominator: Store the denominator part of the fraction
+ */
+struct fract {
+	u8 numerator;
+	u8 denominator;
+};
+
+/*
+ * struct camss_format_info - ISP media bus format information
+ * @code: V4L2 media bus format code
+ * @mbus_bpp: Media bus bits per pixel
+ * @pixelformat: V4L2 pixel format FCC identifier
+ * @planes: Number of planes
+ * @hsub: Horizontal subsampling (for each plane)
+ * @vsub: Vertical subsampling (for each plane)
+ * @bpp: Bits per pixel when stored in memory (for each plane)
+ */
+struct camss_format_info {
+	u32 code;
+	u32 mbus_bpp;
+	u32 pixelformat;
+	u8 planes;
+	struct fract hsub[3];
+	struct fract vsub[3];
+	unsigned int bpp[3];
+};
+
+struct camss_formats {
+	unsigned int nformats;
+	const struct camss_format_info *formats;
+};
+
+u8 camss_format_get_bpp(const struct camss_format_info *formats, unsigned int nformats, u32 code);
+u32 camss_format_find_code(u32 *code, unsigned int n_code, unsigned int index, u32 req_code);
+int camss_format_find_format(u32 code, u32 pixelformat, const struct camss_format_info *formats,
+			     unsigned int nformats);
+
+#endif /* __CAMSS_FORMAT_H__ */