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authorLinus Torvalds <torvalds@linux-foundation.org>2013-09-12 11:35:33 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-09-12 11:35:33 -0700
commit5223161dc0f5e44fbf3d5e42d23697b6796cdf4e (patch)
tree10837ec58d96e751469d78d347f76c0d49238d72 /Documentation
parente5d0c874391a500be7643d3eef9fb07171eee129 (diff)
parent61abeba5222895d6900b13115f5d8eba7988d7d6 (diff)
downloadlinaro-lsk-5223161dc0f5e44fbf3d5e42d23697b6796cdf4e.tar.gz
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds
Pull led updates from Bryan Wu: "Sorry for the late pull request, since I'm just back from vacation. LED subsystem updates for 3.12: - pca9633 driver DT supporting and pca9634 chip supporting - restore legacy device attributes for lp5521 - other fixing and updates" * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds: (28 commits) leds: wm831x-status: Request a REG resource leds: trigger: ledtrig-backlight: Fix invalid memory access in fb_event notification callback leds-pca963x: Fix device tree parsing leds-pca9633: Rename to leds-pca963x leds-pca9633: Add mutex to the ledout register leds-pca9633: Unique naming of the LEDs leds-pca9633: Add support for PCA9634 leds: lp5562: use LP55xx common macros for device attributes Documentation: leds-lp5521,lp5523: update device attribute information leds: lp5523: remove unnecessary writing commands leds: lp5523: restore legacy device attributes leds: lp5523: LED MUX configuration on initializing leds: lp5523: make separate API for loading engine leds: lp5521: remove unnecessary writing commands leds: lp5521: restore legacy device attributes leds: lp55xx: add common macros for device attributes leds: lp55xx: add common data structure for program Documentation: leds: Fix a typo leds: ss4200: Fix incorrect placement of __initdata leds: clevo-mail: Fix incorrect placement of __initdata ...
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/leds/leds-lp55xx.txt72
-rw-r--r--Documentation/devicetree/bindings/leds/pca963x.txt47
-rw-r--r--Documentation/leds/leds-lp5521.txt20
-rw-r--r--Documentation/leds/leds-lp5523.txt21
-rw-r--r--Documentation/leds/leds-lp55xx.txt30
5 files changed, 184 insertions, 6 deletions
diff --git a/Documentation/devicetree/bindings/leds/leds-lp55xx.txt b/Documentation/devicetree/bindings/leds/leds-lp55xx.txt
index d5176882d8b..a61727f9a6d 100644
--- a/Documentation/devicetree/bindings/leds/leds-lp55xx.txt
+++ b/Documentation/devicetree/bindings/leds/leds-lp55xx.txt
@@ -1,7 +1,7 @@
Binding for TI/National Semiconductor LP55xx Led Drivers
Required properties:
-- compatible: "national,lp5521" or "national,lp5523" or "ti,lp5562"
+- compatible: "national,lp5521" or "national,lp5523" or "ti,lp5562" or "ti,lp8501"
- reg: I2C slave address
- clock-mode: Input clock mode, (0: automode, 1: internal, 2: external)
@@ -11,6 +11,11 @@ Each child has own specific current settings
Optional properties:
- label: Used for naming LEDs
+- pwr-sel: LP8501 specific property. Power selection for output channels.
+ 0: D1~9 are connected to VDD
+ 1: D1~6 with VDD, D7~9 with VOUT
+ 2: D1~6 with VOUT, D7~9 with VDD
+ 3: D1~9 are connected to VOUT
Alternatively, each child can have specific channel name
- chan-name: Name of each channel name
@@ -145,3 +150,68 @@ lp5562@30 {
max-cur = /bits/ 8 <0x60>;
};
};
+
+example 4) LP8501
+9 channels are defined. The 'pwr-sel' is LP8501 specific property.
+Others are same as LP5523.
+
+lp8501@32 {
+ compatible = "ti,lp8501";
+ reg = <0x32>;
+ clock-mode = /bits/ 8 <2>;
+ pwr-sel = /bits/ 8 <3>; /* D1~9 connected to VOUT */
+
+ chan0 {
+ chan-name = "d1";
+ led-cur = /bits/ 8 <0x14>;
+ max-cur = /bits/ 8 <0x20>;
+ };
+
+ chan1 {
+ chan-name = "d2";
+ led-cur = /bits/ 8 <0x14>;
+ max-cur = /bits/ 8 <0x20>;
+ };
+
+ chan2 {
+ chan-name = "d3";
+ led-cur = /bits/ 8 <0x14>;
+ max-cur = /bits/ 8 <0x20>;
+ };
+
+ chan3 {
+ chan-name = "d4";
+ led-cur = /bits/ 8 <0x14>;
+ max-cur = /bits/ 8 <0x20>;
+ };
+
+ chan4 {
+ chan-name = "d5";
+ led-cur = /bits/ 8 <0x14>;
+ max-cur = /bits/ 8 <0x20>;
+ };
+
+ chan5 {
+ chan-name = "d6";
+ led-cur = /bits/ 8 <0x14>;
+ max-cur = /bits/ 8 <0x20>;
+ };
+
+ chan6 {
+ chan-name = "d7";
+ led-cur = /bits/ 8 <0x14>;
+ max-cur = /bits/ 8 <0x20>;
+ };
+
+ chan7 {
+ chan-name = "d8";
+ led-cur = /bits/ 8 <0x14>;
+ max-cur = /bits/ 8 <0x20>;
+ };
+
+ chan8 {
+ chan-name = "d9";
+ led-cur = /bits/ 8 <0x14>;
+ max-cur = /bits/ 8 <0x20>;
+ };
+};
diff --git a/Documentation/devicetree/bindings/leds/pca963x.txt b/Documentation/devicetree/bindings/leds/pca963x.txt
new file mode 100644
index 00000000000..aece3eac1b6
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/pca963x.txt
@@ -0,0 +1,47 @@
+LEDs connected to pca9632, pca9633 or pca9634
+
+Required properties:
+- compatible : should be : "nxp,pca9632", "nxp,pca9633" or "nxp,pca9634"
+
+Optional properties:
+- nxp,totem-pole : use totem pole (push-pull) instead of default open-drain
+- nxp,hw-blink : use hardware blinking instead of software blinking
+
+Each led is represented as a sub-node of the nxp,pca963x device.
+
+LED sub-node properties:
+- label : (optional) see Documentation/devicetree/bindings/leds/common.txt
+- reg : number of LED line (could be from 0 to 3 in pca9632 or pca9633
+ or 0 to 7 in pca9634)
+- linux,default-trigger : (optional)
+ see Documentation/devicetree/bindings/leds/common.txt
+
+Examples:
+
+pca9632: pca9632 {
+ compatible = "nxp,pca9632";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0x62>;
+
+ red@0 {
+ label = "red";
+ reg = <0>;
+ linux,default-trigger = "none";
+ };
+ green@1 {
+ label = "green";
+ reg = <1>;
+ linux,default-trigger = "none";
+ };
+ blue@2 {
+ label = "blue";
+ reg = <2>;
+ linux,default-trigger = "none";
+ };
+ unused@3 {
+ label = "unused";
+ reg = <3>;
+ linux,default-trigger = "none";
+ };
+};
diff --git a/Documentation/leds/leds-lp5521.txt b/Documentation/leds/leds-lp5521.txt
index 79e4c2e6e5e..d08d8c179f8 100644
--- a/Documentation/leds/leds-lp5521.txt
+++ b/Documentation/leds/leds-lp5521.txt
@@ -18,7 +18,25 @@ All three channels can be also controlled using the engine micro programs.
More details of the instructions can be found from the public data sheet.
LP5521 has the internal program memory for running various LED patterns.
-For the details, please refer to 'firmware' section in leds-lp55xx.txt
+There are two ways to run LED patterns.
+
+1) Legacy interface - enginex_mode and enginex_load
+ Control interface for the engines:
+ x is 1 .. 3
+ enginex_mode : disabled, load, run
+ enginex_load : store program (visible only in engine load mode)
+
+ Example (start to blink the channel 2 led):
+ cd /sys/class/leds/lp5521:channel2/device
+ echo "load" > engine3_mode
+ echo "037f4d0003ff6000" > engine3_load
+ echo "run" > engine3_mode
+
+ To stop the engine:
+ echo "disabled" > engine3_mode
+
+2) Firmware interface - LP55xx common interface
+ For the details, please refer to 'firmware' section in leds-lp55xx.txt
sysfs contains a selftest entry.
The test communicates with the chip and checks that
diff --git a/Documentation/leds/leds-lp5523.txt b/Documentation/leds/leds-lp5523.txt
index 899fdad509f..5b3e91d4ac5 100644
--- a/Documentation/leds/leds-lp5523.txt
+++ b/Documentation/leds/leds-lp5523.txt
@@ -28,7 +28,26 @@ If both fields are NULL, 'lp5523' is used by default.
/sys/class/leds/lp5523:channelN (N: 0 ~ 8)
LP5523 has the internal program memory for running various LED patterns.
-For the details, please refer to 'firmware' section in leds-lp55xx.txt
+There are two ways to run LED patterns.
+
+1) Legacy interface - enginex_mode, enginex_load and enginex_leds
+ Control interface for the engines:
+ x is 1 .. 3
+ enginex_mode : disabled, load, run
+ enginex_load : microcode load (visible only in load mode)
+ enginex_leds : led mux control (visible only in load mode)
+
+ cd /sys/class/leds/lp5523:channel2/device
+ echo "load" > engine3_mode
+ echo "9d80400004ff05ff437f0000" > engine3_load
+ echo "111111111" > engine3_leds
+ echo "run" > engine3_mode
+
+ To stop the engine:
+ echo "disabled" > engine3_mode
+
+2) Firmware interface - LP55xx common interface
+ For the details, please refer to 'firmware' section in leds-lp55xx.txt
Selftest uses always the current from the platform data.
diff --git a/Documentation/leds/leds-lp55xx.txt b/Documentation/leds/leds-lp55xx.txt
index eec8fa2ffe4..82713ff92eb 100644
--- a/Documentation/leds/leds-lp55xx.txt
+++ b/Documentation/leds/leds-lp55xx.txt
@@ -1,11 +1,11 @@
-LP5521/LP5523/LP55231 Common Driver
-===================================
+LP5521/LP5523/LP55231/LP5562/LP8501 Common Driver
+=================================================
Authors: Milo(Woogyom) Kim <milo.kim@ti.com>
Description
-----------
-LP5521, LP5523/55231 and LP5562 have common features as below.
+LP5521, LP5523/55231, LP5562 and LP8501 have common features as below.
Register access via the I2C
Device initialization/deinitialization
@@ -109,6 +109,30 @@ As soon as 'loading' is set to 0, registered callback is called.
Inside the callback, the selected engine is loaded and memory is updated.
To run programmed pattern, 'run_engine' attribute should be enabled.
+The pattern sqeuence of LP8501 is same as LP5523.
+However pattern data is specific.
+Ex 1) Engine 1 is used
+echo 1 > /sys/bus/i2c/devices/xxxx/select_engine
+echo 1 > /sys/class/firmware/lp8501/loading
+echo "9d0140ff7e0040007e00a001c000" > /sys/class/firmware/lp8501/data
+echo 0 > /sys/class/firmware/lp8501/loading
+echo 1 > /sys/bus/i2c/devices/xxxx/run_engine
+
+Ex 2) Engine 2 and 3 are used at the same time
+echo 2 > /sys/bus/i2c/devices/xxxx/select_engine
+sleep 1
+echo 1 > /sys/class/firmware/lp8501/loading
+echo "9d0140ff7e0040007e00a001c000" > /sys/class/firmware/lp8501/data
+echo 0 > /sys/class/firmware/lp8501/loading
+sleep 1
+echo 3 > /sys/bus/i2c/devices/xxxx/select_engine
+sleep 1
+echo 1 > /sys/class/firmware/lp8501/loading
+echo "9d0340ff7e0040007e00a001c000" > /sys/class/firmware/lp8501/data
+echo 0 > /sys/class/firmware/lp8501/loading
+sleep 1
+echo 1 > /sys/class/leds/d1/device/run_engine
+
( 'run_engine' and 'firmware_cb' )
The sequence of running the program data is common.
But each device has own specific register addresses for commands.