brcm2708: add kernel 4.14 support

[openwrt/staging/lynxis.git] / target / linux / brcm2708 / patches-4.14 / 950-0218-Generic-Rotary-Encoder-overlay-for-multiple-instance.patch

diff --git a/target/linux/brcm2708/patches-4.14/950-0218-Generic-Rotary-Encoder-overlay-for-multiple-instance.patch b/target/linux/brcm2708/patches-4.14/950-0218-Generic-Rotary-Encoder-overlay-for-multiple-instance.patch
new file mode 100644 (file)
index 0000000..b85d545
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.14/950-0218-Generic-Rotary-Encoder-overlay-for-multiple-instance.patch
@@ -0,0 +1,100 @@
+From d61d506099a7e3dc2823927c89ac56478ef9f3a5 Mon Sep 17 00:00:00 2001
+From: Ismael Asensio <isma.af@gmail.com>
+Date: Sun, 18 Feb 2018 18:53:58 +0100
+Subject: [PATCH 218/454] Generic Rotary Encoder overlay for multiple instances
+ (#2388)
+
+Modify the rotary-encoder overlay to support multiple instances.
+---
+ arch/arm/boot/dts/overlays/README             |  4 +-
+ .../dts/overlays/rotary-encoder-overlay.dts   | 54 +++++++++++--------
+ 2 files changed, 33 insertions(+), 25 deletions(-)
+
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -1345,9 +1345,9 @@ Params: <None>
+ Name:   rotary-encoder
+ Info:   Overlay for GPIO connected rotary encoder.
+ Load:   dtoverlay=rotary-encoder,<param>=<val>
+-Params: rotary0_pin_a           GPIO connected to rotary encoder channel A
++Params: pin_a                   GPIO connected to rotary encoder channel A
+                                 (default 4).
+-        rotary0_pin_b           GPIO connected to rotary encoder channel B
++        pin_b                   GPIO connected to rotary encoder channel B
+                                 (default 17).
+         relative_axis           register a relative axis rather than an
+                                 absolute one. Relative axis will only
+--- a/arch/arm/boot/dts/overlays/rotary-encoder-overlay.dts
++++ b/arch/arm/boot/dts/overlays/rotary-encoder-overlay.dts
+@@ -8,7 +8,7 @@
+       fragment@0 {
+               target = <&gpio>;
+               __overlay__ {
+-                      rotary0_pins: rotary0_pins {
++                      rotary_pins: rotary_pins@4 {
+                               brcm,pins = <4 17>; /* gpio 4 17 */
+                               brcm,function = <0 0>; /* input */
+                               brcm,pull = <2 2>; /* pull-up */
+@@ -20,32 +20,40 @@
+       fragment@1 {
+               target-path = "/";
+               __overlay__ {
+-                      rotary0: rotary@0 {
+-                                      compatible = "rotary-encoder";
+-                                      status = "okay";
+-                                      pinctrl-names = "default";
+-                                      pinctrl-0 = <&rotary0_pins>;
+-                                      gpios = <&gpio 4 0>, <&gpio 17 0>;
+-                                      linux,axis = <0>; /* REL_X */
+-                                      rotary-encoder,encoding = "gray";
+-                                      rotary-encoder,steps = <24>; /* 24 default */
+-                                      rotary-encoder,steps-per-period = <1>; /* corresponds to full period mode. See README */
++                      rotary: rotary@4 {
++                              compatible = "rotary-encoder";
++                              status = "okay";
++                              pinctrl-names = "default";
++                              pinctrl-0 = <&rotary_pins>;
++                              gpios = <&gpio 4 0>, <&gpio 17 0>;
++                              linux,axis = <0>; /* REL_X */
++                              rotary-encoder,encoding = "gray";
++                              rotary-encoder,steps = <24>; /* 24 default */
++                              rotary-encoder,steps-per-period = <1>; /* corresponds to full period mode. See README */
+                       };
+               };
+ 
+       };  
+ 
+       __overrides__ {
+-              rotary0_pin_a =     <&rotary0>,"gpios:4",
+-                                  <&rotary0_pins>,"brcm,pins:0";
+-              rotary0_pin_b =     <&rotary0>,"gpios:16",
+-                                  <&rotary0_pins>,"brcm,pins:4";
+-              relative_axis =     <&rotary0>,"rotary-encoder,relative-axis?";
+-              linux_axis =        <&rotary0>,"linux,axis:0";
+-              rollover =          <&rotary0>,"rotary-encoder,rollover?";
+-              steps-per-period =  <&rotary0>,"rotary-encoder,steps-per-period:0";
+-              steps =             <&rotary0>,"rotary-encoder,steps:0";
+-              wakeup =            <&rotary0>,"wakeup-source?";
+-              encoding =          <&rotary0>,"rotary-encoder,encoding";
+-      };  
++              pin_a =             <&rotary>,"gpios:4",
++                                  <&rotary_pins>,"brcm,pins:0",
++                                  /* modify reg values to allow multiple instantiation */
++                                  <&rotary>,"reg:0",
++                                  <&rotary_pins>,"reg:0";
++              pin_b =             <&rotary>,"gpios:16",
++                                  <&rotary_pins>,"brcm,pins:4";
++              relative_axis =     <&rotary>,"rotary-encoder,relative-axis?";
++              linux_axis =        <&rotary>,"linux,axis:0";
++              rollover =          <&rotary>,"rotary-encoder,rollover?";
++              steps-per-period =  <&rotary>,"rotary-encoder,steps-per-period:0";
++              steps =             <&rotary>,"rotary-encoder,steps:0";
++              wakeup =            <&rotary>,"wakeup-source?";
++              encoding =          <&rotary>,"rotary-encoder,encoding";
++                /* legacy parameters*/
++              rotary0_pin_a =     <&rotary>,"gpios:4",
++                                  <&rotary_pins>,"brcm,pins:0";
++              rotary0_pin_b =     <&rotary>,"gpios:16",
++                                  <&rotary_pins>,"brcm,pins:4";
++      };
+ };