From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 20:49:45 +0200
Subject: Adding upstream version 6.1.76.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 drivers/media/rc/img-ir/img-ir-sony.c | 161 ++++++++++++++++++++++++++++++++++
 1 file changed, 161 insertions(+)
 create mode 100644 drivers/media/rc/img-ir/img-ir-sony.c

(limited to 'drivers/media/rc/img-ir/img-ir-sony.c')

diff --git a/drivers/media/rc/img-ir/img-ir-sony.c b/drivers/media/rc/img-ir/img-ir-sony.c
new file mode 100644
index 000000000..dd46c0b71
--- /dev/null
+++ b/drivers/media/rc/img-ir/img-ir-sony.c
@@ -0,0 +1,161 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * ImgTec IR Decoder setup for Sony (SIRC) protocol.
+ *
+ * Copyright 2012-2014 Imagination Technologies Ltd.
+ */
+
+#include "img-ir-hw.h"
+
+/* Convert Sony data to a scancode */
+static int img_ir_sony_scancode(int len, u64 raw, u64 enabled_protocols,
+				struct img_ir_scancode_req *request)
+{
+	unsigned int dev, subdev, func;
+
+	switch (len) {
+	case 12:
+		if (!(enabled_protocols & RC_PROTO_BIT_SONY12))
+			return -EINVAL;
+		func   = raw & 0x7f;	/* first 7 bits */
+		raw    >>= 7;
+		dev    = raw & 0x1f;	/* next 5 bits */
+		subdev = 0;
+		request->protocol = RC_PROTO_SONY12;
+		break;
+	case 15:
+		if (!(enabled_protocols & RC_PROTO_BIT_SONY15))
+			return -EINVAL;
+		func   = raw & 0x7f;	/* first 7 bits */
+		raw    >>= 7;
+		dev    = raw & 0xff;	/* next 8 bits */
+		subdev = 0;
+		request->protocol = RC_PROTO_SONY15;
+		break;
+	case 20:
+		if (!(enabled_protocols & RC_PROTO_BIT_SONY20))
+			return -EINVAL;
+		func   = raw & 0x7f;	/* first 7 bits */
+		raw    >>= 7;
+		dev    = raw & 0x1f;	/* next 5 bits */
+		raw    >>= 5;
+		subdev = raw & 0xff;	/* next 8 bits */
+		request->protocol = RC_PROTO_SONY20;
+		break;
+	default:
+		return -EINVAL;
+	}
+	request->scancode = dev << 16 | subdev << 8 | func;
+	return IMG_IR_SCANCODE;
+}
+
+/* Convert NEC scancode to NEC data filter */
+static int img_ir_sony_filter(const struct rc_scancode_filter *in,
+			      struct img_ir_filter *out, u64 protocols)
+{
+	unsigned int dev, subdev, func;
+	unsigned int dev_m, subdev_m, func_m;
+	unsigned int len = 0;
+
+	dev      = (in->data >> 16) & 0xff;
+	dev_m    = (in->mask >> 16) & 0xff;
+	subdev   = (in->data >> 8)  & 0xff;
+	subdev_m = (in->mask >> 8)  & 0xff;
+	func     = (in->data >> 0)  & 0x7f;
+	func_m   = (in->mask >> 0)  & 0x7f;
+
+	protocols &= RC_PROTO_BIT_SONY12 | RC_PROTO_BIT_SONY15 |
+							RC_PROTO_BIT_SONY20;
+
+	/*
+	 * If only one bit is set, we were requested to do an exact
+	 * protocol. This should be the case for wakeup filters; for
+	 * normal filters, guess the protocol from the scancode.
+	 */
+	if (!is_power_of_2(protocols)) {
+		if (subdev & subdev_m)
+			protocols = RC_PROTO_BIT_SONY20;
+		else if (dev & dev_m & 0xe0)
+			protocols = RC_PROTO_BIT_SONY15;
+		else
+			protocols = RC_PROTO_BIT_SONY12;
+	}
+
+	if (protocols == RC_PROTO_BIT_SONY20) {
+		/* can't encode subdev and higher device bits */
+		if (dev & dev_m & 0xe0)
+			return -EINVAL;
+		len = 20;
+		dev_m &= 0x1f;
+	} else if (protocols == RC_PROTO_BIT_SONY15) {
+		len = 15;
+		subdev_m = 0;
+	} else {
+		/*
+		 * The hardware mask cannot distinguish high device bits and low
+		 * extended bits, so logically AND those bits of the masks
+		 * together.
+		 */
+		subdev_m &= (dev_m >> 5) | 0xf8;
+		dev_m &= 0x1f;
+	}
+
+	/* ensure there aren't any bits straying between fields */
+	dev &= dev_m;
+	subdev &= subdev_m;
+
+	/* write the hardware filter */
+	out->data = func          |
+		    dev      << 7 |
+		    subdev   << 15;
+	out->mask = func_m        |
+		    dev_m    << 7 |
+		    subdev_m << 15;
+
+	if (len) {
+		out->minlen = len;
+		out->maxlen = len;
+	}
+	return 0;
+}
+
+/*
+ * Sony SIRC decoder
+ * See also http://www.sbprojects.com/knowledge/ir/sirc.php
+ *          http://picprojects.org.uk/projects/sirc/sonysirc.pdf
+ */
+struct img_ir_decoder img_ir_sony = {
+	.type = RC_PROTO_BIT_SONY12 | RC_PROTO_BIT_SONY15 | RC_PROTO_BIT_SONY20,
+	.control = {
+		.decoden = 1,
+		.code_type = IMG_IR_CODETYPE_PULSELEN,
+	},
+	/* main timings */
+	.unit = 600000, /* 600 us */
+	.timings = {
+		/* leader symbol */
+		.ldr = {
+			.pulse = { 4	/* 2.4 ms */ },
+			.space = { 1	/* 600 us */ },
+		},
+		/* 0 symbol */
+		.s00 = {
+			.pulse = { 1	/* 600 us */ },
+			.space = { 1	/* 600 us */ },
+		},
+		/* 1 symbol */
+		.s01 = {
+			.pulse = { 2	/* 1.2 ms */ },
+			.space = { 1	/* 600 us */ },
+		},
+		/* free time */
+		.ft = {
+			.minlen = 12,
+			.maxlen = 20,
+			.ft_min = 10,	/* 6 ms */
+		},
+	},
+	/* scancode logic */
+	.scancode = img_ir_sony_scancode,
+	.filter = img_ir_sony_filter,
+};
-- 
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