[media] rc: img-ir: add Sanyo decoder module (46b35083) · Commits · e / devices / android_kernel_fairphone_FP4

drivers/media/rc/img-ir/Kconfig

+7 −0

Original line number	Diff line number	Diff line
		@@ -52,3 +52,10 @@ config IR_IMG_SHARP
		help
		Say Y here to enable support for the Sharp protocol in the ImgTec
		infrared decoder block.

		config IR_IMG_SANYO
		bool "Sanyo protocol support"
		depends on IR_IMG_HW
		help
		Say Y here to enable support for the Sanyo protocol (used by Sanyo,
		Aiwa, Chinon remotes) in the ImgTec infrared decoder block.

drivers/media/rc/img-ir/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -5,6 +5,7 @@ img-ir-$(CONFIG_IR_IMG_NEC) += img-ir-nec.o
		img-ir-$(CONFIG_IR_IMG_JVC) += img-ir-jvc.o
		img-ir-$(CONFIG_IR_IMG_SONY) += img-ir-sony.o
		img-ir-$(CONFIG_IR_IMG_SHARP) += img-ir-sharp.o
		img-ir-$(CONFIG_IR_IMG_SANYO) += img-ir-sanyo.o
		img-ir-objs := $(img-ir-y)

		obj-$(CONFIG_IR_IMG) += img-ir.o

drivers/media/rc/img-ir/img-ir-hw.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -24,6 +24,7 @@ extern struct img_ir_decoder img_ir_nec;
		extern struct img_ir_decoder img_ir_jvc;
		extern struct img_ir_decoder img_ir_sony;
		extern struct img_ir_decoder img_ir_sharp;
		extern struct img_ir_decoder img_ir_sanyo;

		static bool img_ir_decoders_preprocessed;
		static struct img_ir_decoder *img_ir_decoders[] = {
		@@ -38,6 +39,9 @@ static struct img_ir_decoder *img_ir_decoders[] = {
		#endif
		#ifdef CONFIG_IR_IMG_SHARP
		&img_ir_sharp,
		#endif
		#ifdef CONFIG_IR_IMG_SANYO
		&img_ir_sanyo,
		#endif
		NULL
		};

drivers/media/rc/img-ir/img-ir-sanyo.c

0 → 100644

+122 −0

Original line number	Diff line number	Diff line
		/*
		* ImgTec IR Decoder setup for Sanyo protocol.
		*
		* Copyright 2012-2014 Imagination Technologies Ltd.
		*
		* From ir-sanyo-decoder.c:
		*
		* This protocol uses the NEC protocol timings. However, data is formatted as:
		* 13 bits Custom Code
		* 13 bits NOT(Custom Code)
		* 8 bits Key data
		* 8 bits NOT(Key data)
		*
		* According with LIRC, this protocol is used on Sanyo, Aiwa and Chinon
		* Information for this protocol is available at the Sanyo LC7461 datasheet.
		*/

		#include "img-ir-hw.h"

		/* Convert Sanyo data to a scancode */
		static int img_ir_sanyo_scancode(int len, u64 raw, int *scancode, u64 protocols)
		{
		unsigned int addr, addr_inv, data, data_inv;
		/* a repeat code has no data */
		if (!len)
		return IMG_IR_REPEATCODE;
		if (len != 42)
		return -EINVAL;
		addr = (raw >> 0) & 0x1fff;
		addr_inv = (raw >> 13) & 0x1fff;
		data = (raw >> 26) & 0xff;
		data_inv = (raw >> 34) & 0xff;
		/* Validate data */
		if ((data_inv ^ data) != 0xff)
		return -EINVAL;
		/* Validate address */
		if ((addr_inv ^ addr) != 0x1fff)
		return -EINVAL;

		/* Normal Sanyo */
		*scancode = addr << 8 \| data;
		return IMG_IR_SCANCODE;
		}

		/* Convert Sanyo scancode to Sanyo data filter */
		static int img_ir_sanyo_filter(const struct rc_scancode_filter *in,
		struct img_ir_filter *out, u64 protocols)
		{
		unsigned int addr, addr_inv, data, data_inv;
		unsigned int addr_m, data_m;

		data = in->data & 0xff;
		data_m = in->mask & 0xff;
		data_inv = data ^ 0xff;

		if (in->data & 0xff700000)
		return -EINVAL;

		addr = (in->data >> 8) & 0x1fff;
		addr_m = (in->mask >> 8) & 0x1fff;
		addr_inv = addr ^ 0x1fff;

		out->data = (u64)data_inv << 34 \|
		(u64)data << 26 \|
		addr_inv << 13 \|
		addr;
		out->mask = (u64)data_m << 34 \|
		(u64)data_m << 26 \|
		addr_m << 13 \|
		addr_m;
		return 0;
		}

		/* Sanyo decoder */
		struct img_ir_decoder img_ir_sanyo = {
		.type = RC_BIT_SANYO,
		.control = {
		.decoden = 1,
		.code_type = IMG_IR_CODETYPE_PULSEDIST,
		},
		/* main timings */
		.unit = 562500, /* 562.5 us */
		.timings = {
		/* leader symbol */
		.ldr = {
		.pulse = { 16 /* 9ms */ },
		.space = { 8 /* 4.5ms */ },
		},
		/* 0 symbol */
		.s00 = {
		.pulse = { 1 /* 562.5 us */ },
		.space = { 1 /* 562.5 us */ },
		},
		/* 1 symbol */
		.s01 = {
		.pulse = { 1 /* 562.5 us */ },
		.space = { 3 /* 1687.5 us */ },
		},
		/* free time */
		.ft = {
		.minlen = 42,
		.maxlen = 42,
		.ft_min = 10, /* 5.625 ms */
		},
		},
		/* repeat codes */
		.repeat = 108, /* 108 ms */
		.rtimings = {
		/* leader symbol */
		.ldr = {
		.space = { 4 /* 2.25 ms */ },
		},
		/* free time */
		.ft = {
		.minlen = 0, /* repeat code has no data */
		.maxlen = 0,
		},
		},
		/* scancode logic */
		.scancode = img_ir_sanyo_scancode,
		.filter = img_ir_sanyo_filter,
		};