[le10] improve Xbox DVD remote response

packages/linux/patches/default/linux-904-improve-xbox-dvd-remote-performance.patch

@@ -0,0 +1,158 @@
+From 55096db50d8cdbf777c67f672b493ef565a12c38 Mon Sep 17 00:00:00 2001
+From: Matthias Reichl <hias@horus.com>
+Date: Fri, 22 Mar 2019 12:26:17 +0100
+Subject: [PATCH] media: rc: xbox_remote: add protocol and set timeout
+
+The timestamps in ir-keytable -t output showed that the Xbox DVD
+IR dongle decodes scancodes every 64ms. The last scancode of a
+longer button press is decodes 64ms after the last-but-one which
+indicates the decoder doesn't use a timeout but decodes on the last
+edge of the signal.
+
+267.042629: lirc protocol(unknown): scancode = 0xace
+267.042665: event type EV_MSC(0x04): scancode = 0xace
+267.042665: event type EV_KEY(0x01) key_down: KEY_1(0x0002)
+267.042665: event type EV_SYN(0x00).
+267.106625: lirc protocol(unknown): scancode = 0xace
+267.106643: event type EV_MSC(0x04): scancode = 0xace
+267.106643: event type EV_SYN(0x00).
+267.170623: lirc protocol(unknown): scancode = 0xace
+267.170638: event type EV_MSC(0x04): scancode = 0xace
+267.170638: event type EV_SYN(0x00).
+267.234621: lirc protocol(unknown): scancode = 0xace
+267.234636: event type EV_MSC(0x04): scancode = 0xace
+267.234636: event type EV_SYN(0x00).
+267.298623: lirc protocol(unknown): scancode = 0xace
+267.298638: event type EV_MSC(0x04): scancode = 0xace
+267.298638: event type EV_SYN(0x00).
+267.543345: event type EV_KEY(0x01) key_down: KEY_1(0x0002)
+267.543345: event type EV_SYN(0x00).
+267.570015: event type EV_KEY(0x01) key_up: KEY_1(0x0002)
+267.570015: event type EV_SYN(0x00).
+
+Add a protocol with the repeat value and set the timeout in the
+driver to 10ms (to have a bit of headroom for delays) so the Xbox
+DVD remote performs more responsive.
+
+Signed-off-by: Matthias Reichl <hias@horus.com>
+---
+ Documentation/media/lirc.h.rst.exceptions | 1 +
+ drivers/media/rc/keymaps/rc-xbox-dvd.c    | 2 +-
+ drivers/media/rc/rc-main.c                | 2 ++
+ drivers/media/rc/xbox_remote.c            | 4 +++-
+ include/media/rc-map.h                    | 4 +++-
+ include/uapi/linux/lirc.h                 | 2 ++
+ 6 files changed, 12 insertions(+), 3 deletions(-)
+
+diff --git a/Documentation/media/lirc.h.rst.exceptions b/Documentation/media/lirc.h.rst.exceptions
+index e7a41d4b3d46..f8b5f1a32b7d 100644
+--- a/Documentation/media/lirc.h.rst.exceptions
++++ b/Documentation/media/lirc.h.rst.exceptions
+@@ -61,6 +61,7 @@ ignore symbol RC_PROTO_IMON
+ ignore symbol RC_PROTO_RCMM12
+ ignore symbol RC_PROTO_RCMM24
+ ignore symbol RC_PROTO_RCMM32
++ignore symbol RC_PROTO_XBOX_DVD
+
+ # Undocumented macros
+
+diff --git a/drivers/media/rc/keymaps/rc-xbox-dvd.c b/drivers/media/rc/keymaps/rc-xbox-dvd.c
+index af387244636b..42815ab57bff 100644
+--- a/drivers/media/rc/keymaps/rc-xbox-dvd.c
++++ b/drivers/media/rc/keymaps/rc-xbox-dvd.c
+@@ -42,7 +42,7 @@ static struct rc_map_list xbox_dvd_map = {
+ 	.map = {
+ 		.scan     = xbox_dvd,
+ 		.size     = ARRAY_SIZE(xbox_dvd),
+-		.rc_proto = RC_PROTO_UNKNOWN,
++		.rc_proto = RC_PROTO_XBOX_DVD,
+ 		.name     = RC_MAP_XBOX_DVD,
+ 	}
+ };
+diff --git a/drivers/media/rc/rc-main.c b/drivers/media/rc/rc-main.c
+index 78e79c37f208..7f1d5b226f68 100644
+--- a/drivers/media/rc/rc-main.c
++++ b/drivers/media/rc/rc-main.c
+@@ -76,6 +76,7 @@ static const struct {
+ 		.scancode_bits = 0x00ffffff, .repeat_period = 114 },
+ 	[RC_PROTO_RCMM32] = { .name = "rc-mm-32",
+ 		.scancode_bits = 0xffffffff, .repeat_period = 114 },
++	[RC_PROTO_XBOX_DVD] = { .name = "xbox-dvd", .repeat_period = 64 },
+ };
+
+ /* Used to keep track of known keymaps */
+@@ -1027,6 +1028,7 @@ static const struct {
+ 	{ RC_PROTO_BIT_RCMM12 |
+ 	  RC_PROTO_BIT_RCMM24 |
+ 	  RC_PROTO_BIT_RCMM32,	"rc-mm",	"ir-rcmm-decoder"	},
++	{ RC_PROTO_BIT_XBOX_DVD, "xbox-dvd",	NULL			},
+ };
+
+ /**
+diff --git a/drivers/media/rc/xbox_remote.c b/drivers/media/rc/xbox_remote.c
+index f959cbb94744..79470c09989e 100644
+--- a/drivers/media/rc/xbox_remote.c
++++ b/drivers/media/rc/xbox_remote.c
+@@ -148,7 +148,7 @@ static void xbox_remote_rc_init(struct xbox_remote *xbox_remote)
+ 	struct rc_dev *rdev = xbox_remote->rdev;
+
+ 	rdev->priv = xbox_remote;
+-	rdev->allowed_protocols = RC_PROTO_BIT_UNKNOWN;
++	rdev->allowed_protocols = RC_PROTO_BIT_XBOX_DVD;
+ 	rdev->driver_name = "xbox_remote";
+
+ 	rdev->open = xbox_remote_rc_open;
+@@ -157,6 +157,8 @@ static void xbox_remote_rc_init(struct xbox_remote *xbox_remote)
+ 	rdev->device_name = xbox_remote->rc_name;
+ 	rdev->input_phys = xbox_remote->rc_phys;
+
++	rdev->timeout = MS_TO_NS(10);
++
+ 	usb_to_input_id(xbox_remote->udev, &rdev->input_id);
+ 	rdev->dev.parent = &xbox_remote->interface->dev;
+ }
+diff --git a/include/media/rc-map.h b/include/media/rc-map.h
+index e5e86d595645..a0000f392362 100644
+--- a/include/media/rc-map.h
++++ b/include/media/rc-map.h
+@@ -40,6 +40,7 @@
+ #define RC_PROTO_BIT_RCMM12		BIT_ULL(RC_PROTO_RCMM12)
+ #define RC_PROTO_BIT_RCMM24		BIT_ULL(RC_PROTO_RCMM24)
+ #define RC_PROTO_BIT_RCMM32		BIT_ULL(RC_PROTO_RCMM32)
++#define RC_PROTO_BIT_XBOX_DVD		BIT_ULL(RC_PROTO_XBOX_DVD)
+
+ #define RC_PROTO_BIT_ALL \
+ 			(RC_PROTO_BIT_UNKNOWN | RC_PROTO_BIT_OTHER | \
+@@ -55,7 +56,8 @@
+ 			 RC_PROTO_BIT_RC6_MCE | RC_PROTO_BIT_SHARP | \
+ 			 RC_PROTO_BIT_XMP | RC_PROTO_BIT_CEC | \
+ 			 RC_PROTO_BIT_IMON | RC_PROTO_BIT_RCMM12 | \
+-			 RC_PROTO_BIT_RCMM24 | RC_PROTO_BIT_RCMM32)
++			 RC_PROTO_BIT_RCMM24 | RC_PROTO_BIT_RCMM32 | \
++			 RC_PROTO_BIT_XBOX_DVD)
+ /* All rc protocols for which we have decoders */
+ #define RC_PROTO_BIT_ALL_IR_DECODER \
+ 			(RC_PROTO_BIT_RC5 | RC_PROTO_BIT_RC5X_20 | \
+diff --git a/include/uapi/linux/lirc.h b/include/uapi/linux/lirc.h
+index 45fcbf99d72e..f99d9dcae667 100644
+--- a/include/uapi/linux/lirc.h
++++ b/include/uapi/linux/lirc.h
+@@ -195,6 +195,7 @@ struct lirc_scancode {
+  * @RC_PROTO_RCMM12: RC-MM protocol 12 bits
+  * @RC_PROTO_RCMM24: RC-MM protocol 24 bits
+  * @RC_PROTO_RCMM32: RC-MM protocol 32 bits
++ * @RC_PROTO_XBOX_DVD: Xbox DVD Movie Playback Kit protocol
+  */
+ enum rc_proto {
+ 	RC_PROTO_UNKNOWN	= 0,
+@@ -224,6 +225,7 @@ enum rc_proto {
+ 	RC_PROTO_RCMM12		= 24,
+ 	RC_PROTO_RCMM24		= 25,
+ 	RC_PROTO_RCMM32		= 26,
++	RC_PROTO_XBOX_DVD	= 27,
+ };
+
+ #endif
+-- 
+2.20.1
+