mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-27 04:47:05 +00:00
LED updates for 5.20: new driver for bcm63138, is31fl319x updates,
fixups for multicolor. Clevo-mail driver got disabled, it needs API
fix.
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Merge tag 'leds-5.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds
Pull LED updates from Pavel Machek:
"A new driver for bcm63138, is31fl319x updates, fixups for multicolor.
The clevo-mail driver got disabled, it needs an API fix"
* tag 'leds-5.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds: (23 commits)
leds: is31fl319x: use simple i2c probe function
leds: is31fl319x: Fix devm vs. non-devm ordering
leds: is31fl319x: Make use of dev_err_probe()
leds: is31fl319x: Make use of device properties
leds: is31fl319x: Cleanup formatting and dev_dbg calls
leds: is31fl319x: Add support for is31fl319{0,1,3} chips
leds: is31fl319x: Move chipset-specific values in chipdef struct
leds: is31fl319x: Use non-wildcard names for vars, structs and defines
leds: is31fl319x: Add missing si-en compatibles
dt-bindings: leds: pwm-multicolor: document max-brigthness
leds: turris-omnia: convert to use dev_groups
leds: leds-bcm63138: get rid of LED_OFF
leds: add help info about BCM63138 module name
dt-bindings: leds: leds-bcm63138: unify full stops in descriptions
dt-bindings: leds: lp50xx: fix LED children names
dt-bindings: leds: class-multicolor: reference class directly in multi-led node
leds: bcm63138: add support for BCM63138 controller
dt-bindings: leds: add Broadcom's BCM63138 controller
leds: clevo-mail: Mark as broken pending interface fix
leds: pwm-multicolor: Support active-low LEDs
...
This commit is contained in:
Linus Torvalds
commit
c8a684e2e1
13 changed files with 811 additions and 218 deletions
|
|
@ -33,6 +33,8 @@ patternProperties:
|
|||
"^multi-led@[0-9a-b]$":
|
||||
type: object
|
||||
$ref: leds-class-multicolor.yaml#
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||||
unevaluatedProperties: false
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||||
|
||||
description:
|
||||
This node represents one of the RGB LED devices on Turris Omnia.
|
||||
No subnodes need to be added for subchannels since this controller only
|
||||
|
|
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|||
95
Documentation/devicetree/bindings/leds/leds-bcm63138.yaml
Normal file
95
Documentation/devicetree/bindings/leds/leds-bcm63138.yaml
Normal file
|
|
@ -0,0 +1,95 @@
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|||
# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
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%YAML 1.2
|
||||
---
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||||
$id: http://devicetree.org/schemas/leds/leds-bcm63138.yaml#
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||||
$schema: http://devicetree.org/meta-schemas/core.yaml#
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|
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title: Broadcom's BCM63138 LEDs controller
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maintainers:
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- Rafał Miłecki <rafal@milecki.pl>
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description: |
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This LEDs controller was first used on BCM63138 and later reused on BCM4908,
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BCM6848, BCM6858, BCM63138, BCM63148, BCM63381 and BCM68360 SoCs.
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It supports up to 32 LEDs that can be connected parallelly or serially. It
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also includes limited support for hardware blinking.
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Binding serially connected LEDs isn't documented yet.
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properties:
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compatible:
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oneOf:
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- items:
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- enum:
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- brcm,bcm4908-leds
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- brcm,bcm6848-leds
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- brcm,bcm6858-leds
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- brcm,bcm63148-leds
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- brcm,bcm63381-leds
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- brcm,bcm68360-leds
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- const: brcm,bcm63138-leds
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- const: brcm,bcm63138-leds
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reg:
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maxItems: 1
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"#address-cells":
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const: 1
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|
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"#size-cells":
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const: 0
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patternProperties:
|
||||
"^led@[a-f0-9]+$":
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type: object
|
||||
|
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$ref: common.yaml#
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properties:
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reg:
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maxItems: 1
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description: LED pin number
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active-low:
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type: boolean
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description: Makes LED active low
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|
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required:
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- reg
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unevaluatedProperties: false
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required:
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- reg
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- "#address-cells"
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- "#size-cells"
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additionalProperties: false
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||||
|
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examples:
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- |
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#include <dt-bindings/leds/common.h>
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|
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leds@ff800800 {
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compatible = "brcm,bcm4908-leds", "brcm,bcm63138-leds";
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reg = <0xff800800 0xdc>;
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|
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#address-cells = <1>;
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#size-cells = <0>;
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|
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led@0 {
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reg = <0x0>;
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function = LED_FUNCTION_POWER;
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color = <LED_COLOR_ID_GREEN>;
|
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default-state = "on";
|
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};
|
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|
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led@3 {
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reg = <0x3>;
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function = LED_FUNCTION_STATUS;
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color = <LED_COLOR_ID_GREEN>;
|
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active-low;
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};
|
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};
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|
|
@ -19,22 +19,22 @@ description: |
|
|||
LED class. Common LED nodes and properties are inherited from the common.yaml
|
||||
within this documentation directory.
|
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|
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patternProperties:
|
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"^multi-led(@[0-9a-f])?$":
|
||||
type: object
|
||||
description: Represents the LEDs that are to be grouped.
|
||||
properties:
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||||
color:
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||||
description: |
|
||||
For multicolor LED support this property should be defined as either
|
||||
LED_COLOR_ID_RGB or LED_COLOR_ID_MULTI which can be found in
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include/linux/leds/common.h.
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enum: [ 8, 9 ]
|
||||
properties:
|
||||
$nodename:
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||||
pattern: "^multi-led(@[0-9a-f])?$"
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||||
|
||||
$ref: "common.yaml#"
|
||||
color:
|
||||
description: |
|
||||
For multicolor LED support this property should be defined as either
|
||||
LED_COLOR_ID_RGB or LED_COLOR_ID_MULTI which can be found in
|
||||
include/linux/leds/common.h.
|
||||
enum: [ 8, 9 ]
|
||||
|
||||
required:
|
||||
- color
|
||||
required:
|
||||
- color
|
||||
|
||||
allOf:
|
||||
- $ref: "common.yaml#"
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||||
|
||||
additionalProperties: true
|
||||
|
||||
|
|
|
|||
|
|
@ -56,6 +56,8 @@ patternProperties:
|
|||
'^multi-led@[0-9a-f]$':
|
||||
type: object
|
||||
$ref: leds-class-multicolor.yaml#
|
||||
unevaluatedProperties: false
|
||||
|
||||
properties:
|
||||
reg:
|
||||
minItems: 1
|
||||
|
|
@ -65,8 +67,14 @@ patternProperties:
|
|||
for the child node. The LED modules can either be used stand alone
|
||||
or grouped into a module bank.
|
||||
|
||||
'#address-cells':
|
||||
const: 1
|
||||
|
||||
'#size-cells':
|
||||
const: 0
|
||||
|
||||
patternProperties:
|
||||
"(^led-[0-9a-f]$|led)":
|
||||
"^led@[0-9a-f]+$":
|
||||
type: object
|
||||
$ref: common.yaml#
|
||||
|
||||
|
|
|
|||
|
|
@ -19,6 +19,14 @@ properties:
|
|||
|
||||
multi-led:
|
||||
type: object
|
||||
$ref: leds-class-multicolor.yaml#
|
||||
unevaluatedProperties: false
|
||||
|
||||
properties:
|
||||
max-brightness:
|
||||
description:
|
||||
Maximum brightness possible for the LED
|
||||
$ref: /schemas/types.yaml#/definitions/uint32
|
||||
|
||||
patternProperties:
|
||||
"^led-[0-9a-z]+$":
|
||||
|
|
@ -33,6 +41,10 @@ properties:
|
|||
|
||||
pwm-names: true
|
||||
|
||||
active-low:
|
||||
description: For PWMs where the LED is wired to supply rather than ground.
|
||||
type: boolean
|
||||
|
||||
color: true
|
||||
|
||||
required:
|
||||
|
|
@ -42,9 +54,6 @@ properties:
|
|||
required:
|
||||
- compatible
|
||||
|
||||
allOf:
|
||||
- $ref: leds-class-multicolor.yaml#
|
||||
|
||||
additionalProperties: false
|
||||
|
||||
examples:
|
||||
|
|
|
|||
|
|
@ -59,6 +59,8 @@ properties:
|
|||
multi-led:
|
||||
type: object
|
||||
$ref: leds-class-multicolor.yaml#
|
||||
unevaluatedProperties: false
|
||||
|
||||
properties:
|
||||
"#address-cells":
|
||||
const: 1
|
||||
|
|
|
|||
|
|
@ -447,16 +447,16 @@ config LEDS_LP8860
|
|||
|
||||
config LEDS_CLEVO_MAIL
|
||||
tristate "Mail LED on Clevo notebook"
|
||||
depends on LEDS_CLASS
|
||||
depends on LEDS_CLASS && BROKEN
|
||||
depends on X86 && SERIO_I8042 && DMI
|
||||
help
|
||||
This driver makes the mail LED accessible from userspace
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||||
programs through the leds subsystem. This LED have three
|
||||
known mode: off, blink at 0.5Hz and blink at 1Hz.
|
||||
programs through the LEDs subsystem. This LED has three
|
||||
known modes: off, blink at 0.5Hz and blink at 1Hz.
|
||||
|
||||
The driver supports two kinds of interface: using ledtrig-timer
|
||||
or through /sys/class/leds/clevo::mail/brightness. As this LED
|
||||
cannot change it's brightness it blinks instead. The brightness
|
||||
cannot change its brightness it blinks instead. The brightness
|
||||
value 0 means off, 1..127 means blink at 0.5Hz and 128..255 means
|
||||
blink at 1Hz.
|
||||
|
||||
|
|
@ -697,7 +697,7 @@ config LEDS_MENF21BMC
|
|||
|
||||
config LEDS_IS31FL319X
|
||||
tristate "LED Support for ISSI IS31FL319x I2C LED controller family"
|
||||
depends on LEDS_CLASS && I2C && OF
|
||||
depends on LEDS_CLASS && I2C
|
||||
select REGMAP_I2C
|
||||
help
|
||||
This option enables support for LEDs connected to ISSI IS31FL319x
|
||||
|
|
|
|||
|
|
@ -1,3 +1,17 @@
|
|||
config LEDS_BCM63138
|
||||
tristate "LED Support for Broadcom BCM63138 SoC"
|
||||
depends on LEDS_CLASS
|
||||
depends on ARCH_BCM4908 || ARCH_BCM_5301X || BCM63XX || COMPILE_TEST
|
||||
depends on HAS_IOMEM
|
||||
depends on OF
|
||||
default ARCH_BCM4908
|
||||
help
|
||||
This option enables support for LED controller that is part of
|
||||
BCM63138 SoC. The same hardware block is known to be also used
|
||||
in BCM4908, BCM6848, BCM6858, BCM63148, BCM63381 and BCM68360.
|
||||
|
||||
If compiled as module it will be called leds-bcm63138.
|
||||
|
||||
config LEDS_LGM
|
||||
tristate "LED support for LGM SoC series"
|
||||
depends on X86 || COMPILE_TEST
|
||||
|
|
|
|||
|
|
@ -1,2 +1,3 @@
|
|||
# SPDX-License-Identifier: GPL-2.0
|
||||
obj-$(CONFIG_LEDS_BCM63138) += leds-bcm63138.o
|
||||
obj-$(CONFIG_LEDS_LGM) += leds-lgm-sso.o
|
||||
|
|
|
|||
307
drivers/leds/blink/leds-bcm63138.c
Normal file
307
drivers/leds/blink/leds-bcm63138.c
Normal file
|
|
@ -0,0 +1,307 @@
|
|||
// SPDX-License-Identifier: GPL-2.0-only
|
||||
/*
|
||||
* Copyright (C) 2021 Rafał Miłecki <rafal@milecki.pl>
|
||||
*/
|
||||
#include <linux/delay.h>
|
||||
#include <linux/io.h>
|
||||
#include <linux/leds.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/of.h>
|
||||
#include <linux/pinctrl/consumer.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/spinlock.h>
|
||||
|
||||
#define BCM63138_MAX_LEDS 32
|
||||
#define BCM63138_MAX_BRIGHTNESS 9
|
||||
|
||||
#define BCM63138_LED_BITS 4 /* how many bits control a single LED */
|
||||
#define BCM63138_LED_MASK ((1 << BCM63138_LED_BITS) - 1) /* 0xf */
|
||||
#define BCM63138_LEDS_PER_REG (32 / BCM63138_LED_BITS) /* 8 */
|
||||
|
||||
#define BCM63138_GLB_CTRL 0x00
|
||||
#define BCM63138_GLB_CTRL_SERIAL_LED_DATA_PPOL 0x00000002
|
||||
#define BCM63138_GLB_CTRL_SERIAL_LED_EN_POL 0x00000008
|
||||
#define BCM63138_MASK 0x04
|
||||
#define BCM63138_HW_LED_EN 0x08
|
||||
#define BCM63138_SERIAL_LED_SHIFT_SEL 0x0c
|
||||
#define BCM63138_FLASH_RATE_CTRL1 0x10
|
||||
#define BCM63138_FLASH_RATE_CTRL2 0x14
|
||||
#define BCM63138_FLASH_RATE_CTRL3 0x18
|
||||
#define BCM63138_FLASH_RATE_CTRL4 0x1c
|
||||
#define BCM63138_BRIGHT_CTRL1 0x20
|
||||
#define BCM63138_BRIGHT_CTRL2 0x24
|
||||
#define BCM63138_BRIGHT_CTRL3 0x28
|
||||
#define BCM63138_BRIGHT_CTRL4 0x2c
|
||||
#define BCM63138_POWER_LED_CFG 0x30
|
||||
#define BCM63138_HW_POLARITY 0xb4
|
||||
#define BCM63138_SW_DATA 0xb8
|
||||
#define BCM63138_SW_POLARITY 0xbc
|
||||
#define BCM63138_PARALLEL_LED_POLARITY 0xc0
|
||||
#define BCM63138_SERIAL_LED_POLARITY 0xc4
|
||||
#define BCM63138_HW_LED_STATUS 0xc8
|
||||
#define BCM63138_FLASH_CTRL_STATUS 0xcc
|
||||
#define BCM63138_FLASH_BRT_CTRL 0xd0
|
||||
#define BCM63138_FLASH_P_LED_OUT_STATUS 0xd4
|
||||
#define BCM63138_FLASH_S_LED_OUT_STATUS 0xd8
|
||||
|
||||
struct bcm63138_leds {
|
||||
struct device *dev;
|
||||
void __iomem *base;
|
||||
spinlock_t lock;
|
||||
};
|
||||
|
||||
struct bcm63138_led {
|
||||
struct bcm63138_leds *leds;
|
||||
struct led_classdev cdev;
|
||||
u32 pin;
|
||||
bool active_low;
|
||||
};
|
||||
|
||||
/*
|
||||
* I/O access
|
||||
*/
|
||||
|
||||
static void bcm63138_leds_write(struct bcm63138_leds *leds, unsigned int reg,
|
||||
u32 data)
|
||||
{
|
||||
writel(data, leds->base + reg);
|
||||
}
|
||||
|
||||
static unsigned long bcm63138_leds_read(struct bcm63138_leds *leds,
|
||||
unsigned int reg)
|
||||
{
|
||||
return readl(leds->base + reg);
|
||||
}
|
||||
|
||||
static void bcm63138_leds_update_bits(struct bcm63138_leds *leds,
|
||||
unsigned int reg, u32 mask, u32 val)
|
||||
{
|
||||
WARN_ON(val & ~mask);
|
||||
|
||||
bcm63138_leds_write(leds, reg, (bcm63138_leds_read(leds, reg) & ~mask) | (val & mask));
|
||||
}
|
||||
|
||||
/*
|
||||
* Helpers
|
||||
*/
|
||||
|
||||
static void bcm63138_leds_set_flash_rate(struct bcm63138_leds *leds,
|
||||
struct bcm63138_led *led,
|
||||
u8 value)
|
||||
{
|
||||
int reg_offset = (led->pin >> fls((BCM63138_LEDS_PER_REG - 1))) * 4;
|
||||
int shift = (led->pin & (BCM63138_LEDS_PER_REG - 1)) * BCM63138_LED_BITS;
|
||||
|
||||
bcm63138_leds_update_bits(leds, BCM63138_FLASH_RATE_CTRL1 + reg_offset,
|
||||
BCM63138_LED_MASK << shift, value << shift);
|
||||
}
|
||||
|
||||
static void bcm63138_leds_set_bright(struct bcm63138_leds *leds,
|
||||
struct bcm63138_led *led,
|
||||
u8 value)
|
||||
{
|
||||
int reg_offset = (led->pin >> fls((BCM63138_LEDS_PER_REG - 1))) * 4;
|
||||
int shift = (led->pin & (BCM63138_LEDS_PER_REG - 1)) * BCM63138_LED_BITS;
|
||||
|
||||
bcm63138_leds_update_bits(leds, BCM63138_BRIGHT_CTRL1 + reg_offset,
|
||||
BCM63138_LED_MASK << shift, value << shift);
|
||||
}
|
||||
|
||||
static void bcm63138_leds_enable_led(struct bcm63138_leds *leds,
|
||||
struct bcm63138_led *led,
|
||||
enum led_brightness value)
|
||||
{
|
||||
u32 bit = BIT(led->pin);
|
||||
|
||||
bcm63138_leds_update_bits(leds, BCM63138_SW_DATA, bit, value ? bit : 0);
|
||||
}
|
||||
|
||||
/*
|
||||
* API callbacks
|
||||
*/
|
||||
|
||||
static void bcm63138_leds_brightness_set(struct led_classdev *led_cdev,
|
||||
enum led_brightness value)
|
||||
{
|
||||
struct bcm63138_led *led = container_of(led_cdev, struct bcm63138_led, cdev);
|
||||
struct bcm63138_leds *leds = led->leds;
|
||||
unsigned long flags;
|
||||
|
||||
spin_lock_irqsave(&leds->lock, flags);
|
||||
|
||||
bcm63138_leds_enable_led(leds, led, value);
|
||||
if (!value)
|
||||
bcm63138_leds_set_flash_rate(leds, led, 0);
|
||||
else
|
||||
bcm63138_leds_set_bright(leds, led, value);
|
||||
|
||||
spin_unlock_irqrestore(&leds->lock, flags);
|
||||
}
|
||||
|
||||
static int bcm63138_leds_blink_set(struct led_classdev *led_cdev,
|
||||
unsigned long *delay_on,
|
||||
unsigned long *delay_off)
|
||||
{
|
||||
struct bcm63138_led *led = container_of(led_cdev, struct bcm63138_led, cdev);
|
||||
struct bcm63138_leds *leds = led->leds;
|
||||
unsigned long flags;
|
||||
u8 value;
|
||||
|
||||
if (!*delay_on && !*delay_off) {
|
||||
*delay_on = 640;
|
||||
*delay_off = 640;
|
||||
}
|
||||
|
||||
if (*delay_on != *delay_off) {
|
||||
dev_dbg(led_cdev->dev, "Blinking at unequal delays is not supported\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
switch (*delay_on) {
|
||||
case 1152 ... 1408: /* 1280 ms ± 10% */
|
||||
value = 0x7;
|
||||
break;
|
||||
case 576 ... 704: /* 640 ms ± 10% */
|
||||
value = 0x6;
|
||||
break;
|
||||
case 288 ... 352: /* 320 ms ± 10% */
|
||||
value = 0x5;
|
||||
break;
|
||||
case 126 ... 154: /* 140 ms ± 10% */
|
||||
value = 0x4;
|
||||
break;
|
||||
case 59 ... 72: /* 65 ms ± 10% */
|
||||
value = 0x3;
|
||||
break;
|
||||
default:
|
||||
dev_dbg(led_cdev->dev, "Blinking delay value %lu is unsupported\n",
|
||||
*delay_on);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
spin_lock_irqsave(&leds->lock, flags);
|
||||
|
||||
bcm63138_leds_enable_led(leds, led, BCM63138_MAX_BRIGHTNESS);
|
||||
bcm63138_leds_set_flash_rate(leds, led, value);
|
||||
|
||||
spin_unlock_irqrestore(&leds->lock, flags);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* LED driver
|
||||
*/
|
||||
|
||||
static void bcm63138_leds_create_led(struct bcm63138_leds *leds,
|
||||
struct device_node *np)
|
||||
{
|
||||
struct led_init_data init_data = {
|
||||
.fwnode = of_fwnode_handle(np),
|
||||
};
|
||||
struct device *dev = leds->dev;
|
||||
struct bcm63138_led *led;
|
||||
struct pinctrl *pinctrl;
|
||||
u32 bit;
|
||||
int err;
|
||||
|
||||
led = devm_kzalloc(dev, sizeof(*led), GFP_KERNEL);
|
||||
if (!led) {
|
||||
dev_err(dev, "Failed to alloc LED\n");
|
||||
return;
|
||||
}
|
||||
|
||||
led->leds = leds;
|
||||
|
||||
if (of_property_read_u32(np, "reg", &led->pin)) {
|
||||
dev_err(dev, "Missing \"reg\" property in %pOF\n", np);
|
||||
goto err_free;
|
||||
}
|
||||
|
||||
if (led->pin >= BCM63138_MAX_LEDS) {
|
||||
dev_err(dev, "Invalid \"reg\" value %d\n", led->pin);
|
||||
goto err_free;
|
||||
}
|
||||
|
||||
led->active_low = of_property_read_bool(np, "active-low");
|
||||
|
||||
led->cdev.max_brightness = BCM63138_MAX_BRIGHTNESS;
|
||||
led->cdev.brightness_set = bcm63138_leds_brightness_set;
|
||||
led->cdev.blink_set = bcm63138_leds_blink_set;
|
||||
|
||||
err = devm_led_classdev_register_ext(dev, &led->cdev, &init_data);
|
||||
if (err) {
|
||||
dev_err(dev, "Failed to register LED %pOF: %d\n", np, err);
|
||||
goto err_free;
|
||||
}
|
||||
|
||||
pinctrl = devm_pinctrl_get_select_default(led->cdev.dev);
|
||||
if (IS_ERR(pinctrl) && PTR_ERR(pinctrl) != -ENODEV) {
|
||||
dev_warn(led->cdev.dev, "Failed to select %pOF pinctrl: %ld\n",
|
||||
np, PTR_ERR(pinctrl));
|
||||
}
|
||||
|
||||
bit = BIT(led->pin);
|
||||
bcm63138_leds_update_bits(leds, BCM63138_PARALLEL_LED_POLARITY, bit,
|
||||
led->active_low ? 0 : bit);
|
||||
bcm63138_leds_update_bits(leds, BCM63138_HW_LED_EN, bit, 0);
|
||||
bcm63138_leds_set_flash_rate(leds, led, 0);
|
||||
bcm63138_leds_enable_led(leds, led, led->cdev.brightness);
|
||||
|
||||
return;
|
||||
|
||||
err_free:
|
||||
devm_kfree(dev, led);
|
||||
}
|
||||
|
||||
static int bcm63138_leds_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct device_node *np = dev_of_node(&pdev->dev);
|
||||
struct device *dev = &pdev->dev;
|
||||
struct bcm63138_leds *leds;
|
||||
struct device_node *child;
|
||||
|
||||
leds = devm_kzalloc(dev, sizeof(*leds), GFP_KERNEL);
|
||||
if (!leds)
|
||||
return -ENOMEM;
|
||||
|
||||
leds->dev = dev;
|
||||
|
||||
leds->base = devm_platform_ioremap_resource(pdev, 0);
|
||||
if (IS_ERR(leds->base))
|
||||
return PTR_ERR(leds->base);
|
||||
|
||||
spin_lock_init(&leds->lock);
|
||||
|
||||
bcm63138_leds_write(leds, BCM63138_GLB_CTRL,
|
||||
BCM63138_GLB_CTRL_SERIAL_LED_DATA_PPOL |
|
||||
BCM63138_GLB_CTRL_SERIAL_LED_EN_POL);
|
||||
bcm63138_leds_write(leds, BCM63138_HW_LED_EN, 0);
|
||||
bcm63138_leds_write(leds, BCM63138_SERIAL_LED_POLARITY, 0);
|
||||
bcm63138_leds_write(leds, BCM63138_PARALLEL_LED_POLARITY, 0);
|
||||
|
||||
for_each_available_child_of_node(np, child) {
|
||||
bcm63138_leds_create_led(leds, child);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct of_device_id bcm63138_leds_of_match_table[] = {
|
||||
{ .compatible = "brcm,bcm63138-leds", },
|
||||
{ },
|
||||
};
|
||||
|
||||
static struct platform_driver bcm63138_leds_driver = {
|
||||
.probe = bcm63138_leds_probe,
|
||||
.driver = {
|
||||
.name = "leds-bcm63xxx",
|
||||
.of_match_table = bcm63138_leds_of_match_table,
|
||||
},
|
||||
};
|
||||
|
||||
module_platform_driver(bcm63138_leds_driver);
|
||||
|
||||
MODULE_AUTHOR("Rafał Miłecki");
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_DEVICE_TABLE(of, bcm63138_leds_of_match_table);
|
||||
|
|
@ -11,9 +11,9 @@
|
|||
#include <linux/err.h>
|
||||
#include <linux/i2c.h>
|
||||
#include <linux/leds.h>
|
||||
#include <linux/mod_devicetable.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/of.h>
|
||||
#include <linux/of_device.h>
|
||||
#include <linux/property.h>
|
||||
#include <linux/regmap.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/delay.h>
|
||||
|
|
@ -21,39 +21,64 @@
|
|||
|
||||
/* register numbers */
|
||||
#define IS31FL319X_SHUTDOWN 0x00
|
||||
#define IS31FL319X_CTRL1 0x01
|
||||
#define IS31FL319X_CTRL2 0x02
|
||||
#define IS31FL319X_CONFIG1 0x03
|
||||
#define IS31FL319X_CONFIG2 0x04
|
||||
#define IS31FL319X_RAMP_MODE 0x05
|
||||
#define IS31FL319X_BREATH_MASK 0x06
|
||||
#define IS31FL319X_PWM(channel) (0x07 + channel)
|
||||
#define IS31FL319X_DATA_UPDATE 0x10
|
||||
#define IS31FL319X_T0(channel) (0x11 + channel)
|
||||
#define IS31FL319X_T123_1 0x1a
|
||||
#define IS31FL319X_T123_2 0x1b
|
||||
#define IS31FL319X_T123_3 0x1c
|
||||
#define IS31FL319X_T4(channel) (0x1d + channel)
|
||||
#define IS31FL319X_TIME_UPDATE 0x26
|
||||
#define IS31FL319X_RESET 0xff
|
||||
|
||||
#define IS31FL319X_REG_CNT (IS31FL319X_RESET + 1)
|
||||
/* registers for 3190, 3191 and 3193 */
|
||||
#define IS31FL3190_BREATHING 0x01
|
||||
#define IS31FL3190_LEDMODE 0x02
|
||||
#define IS31FL3190_CURRENT 0x03
|
||||
#define IS31FL3190_PWM(channel) (0x04 + channel)
|
||||
#define IS31FL3190_DATA_UPDATE 0x07
|
||||
#define IS31FL3190_T0(channel) (0x0a + channel)
|
||||
#define IS31FL3190_T1T2(channel) (0x10 + channel)
|
||||
#define IS31FL3190_T3T4(channel) (0x16 + channel)
|
||||
#define IS31FL3190_TIME_UPDATE 0x1c
|
||||
#define IS31FL3190_LEDCONTROL 0x1d
|
||||
#define IS31FL3190_RESET 0x2f
|
||||
|
||||
#define IS31FL3190_CURRENT_uA_MIN 5000
|
||||
#define IS31FL3190_CURRENT_uA_DEFAULT 42000
|
||||
#define IS31FL3190_CURRENT_uA_MAX 42000
|
||||
#define IS31FL3190_CURRENT_MASK GENMASK(4, 2)
|
||||
#define IS31FL3190_CURRENT_5_mA 0x02
|
||||
#define IS31FL3190_CURRENT_10_mA 0x01
|
||||
#define IS31FL3190_CURRENT_17dot5_mA 0x04
|
||||
#define IS31FL3190_CURRENT_30_mA 0x03
|
||||
#define IS31FL3190_CURRENT_42_mA 0x00
|
||||
|
||||
/* registers for 3196 and 3199 */
|
||||
#define IS31FL3196_CTRL1 0x01
|
||||
#define IS31FL3196_CTRL2 0x02
|
||||
#define IS31FL3196_CONFIG1 0x03
|
||||
#define IS31FL3196_CONFIG2 0x04
|
||||
#define IS31FL3196_RAMP_MODE 0x05
|
||||
#define IS31FL3196_BREATH_MARK 0x06
|
||||
#define IS31FL3196_PWM(channel) (0x07 + channel)
|
||||
#define IS31FL3196_DATA_UPDATE 0x10
|
||||
#define IS31FL3196_T0(channel) (0x11 + channel)
|
||||
#define IS31FL3196_T123_1 0x1a
|
||||
#define IS31FL3196_T123_2 0x1b
|
||||
#define IS31FL3196_T123_3 0x1c
|
||||
#define IS31FL3196_T4(channel) (0x1d + channel)
|
||||
#define IS31FL3196_TIME_UPDATE 0x26
|
||||
#define IS31FL3196_RESET 0xff
|
||||
|
||||
#define IS31FL3196_REG_CNT (IS31FL3196_RESET + 1)
|
||||
|
||||
#define IS31FL319X_MAX_LEDS 9
|
||||
|
||||
/* CS (Current Setting) in CONFIG2 register */
|
||||
#define IS31FL319X_CONFIG2_CS_SHIFT 4
|
||||
#define IS31FL319X_CONFIG2_CS_MASK 0x7
|
||||
#define IS31FL319X_CONFIG2_CS_STEP_REF 12
|
||||
#define IS31FL3196_CONFIG2_CS_SHIFT 4
|
||||
#define IS31FL3196_CONFIG2_CS_MASK GENMASK(2, 0)
|
||||
#define IS31FL3196_CONFIG2_CS_STEP_REF 12
|
||||
|
||||
#define IS31FL319X_CURRENT_MIN ((u32)5000)
|
||||
#define IS31FL319X_CURRENT_MAX ((u32)40000)
|
||||
#define IS31FL319X_CURRENT_STEP ((u32)5000)
|
||||
#define IS31FL319X_CURRENT_DEFAULT ((u32)20000)
|
||||
#define IS31FL3196_CURRENT_uA_MIN 5000
|
||||
#define IS31FL3196_CURRENT_uA_MAX 40000
|
||||
#define IS31FL3196_CURRENT_uA_STEP 5000
|
||||
#define IS31FL3196_CURRENT_uA_DEFAULT 20000
|
||||
|
||||
/* Audio gain in CONFIG2 register */
|
||||
#define IS31FL319X_AUDIO_GAIN_DB_MAX ((u32)21)
|
||||
#define IS31FL319X_AUDIO_GAIN_DB_STEP ((u32)3)
|
||||
#define IS31FL3196_AUDIO_GAIN_DB_MAX ((u32)21)
|
||||
#define IS31FL3196_AUDIO_GAIN_DB_STEP 3
|
||||
|
||||
/*
|
||||
* regmap is used as a cache of chip's register space,
|
||||
|
|
@ -78,52 +103,107 @@ struct is31fl319x_chip {
|
|||
|
||||
struct is31fl319x_chipdef {
|
||||
int num_leds;
|
||||
u8 reset_reg;
|
||||
const struct regmap_config *is31fl319x_regmap_config;
|
||||
int (*brightness_set)(struct led_classdev *cdev, enum led_brightness brightness);
|
||||
u32 current_default;
|
||||
u32 current_min;
|
||||
u32 current_max;
|
||||
bool is_3196or3199;
|
||||
};
|
||||
|
||||
static const struct is31fl319x_chipdef is31fl3190_cdef = {
|
||||
.num_leds = 1,
|
||||
static bool is31fl319x_readable_reg(struct device *dev, unsigned int reg)
|
||||
{
|
||||
/* we have no readable registers */
|
||||
return false;
|
||||
}
|
||||
|
||||
static bool is31fl3190_volatile_reg(struct device *dev, unsigned int reg)
|
||||
{
|
||||
/* volatile registers are not cached */
|
||||
switch (reg) {
|
||||
case IS31FL3190_DATA_UPDATE:
|
||||
case IS31FL3190_TIME_UPDATE:
|
||||
case IS31FL3190_RESET:
|
||||
return true; /* always write-through */
|
||||
default:
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
static const struct reg_default is31fl3190_reg_defaults[] = {
|
||||
{ IS31FL3190_LEDMODE, 0x00 },
|
||||
{ IS31FL3190_CURRENT, 0x00 },
|
||||
{ IS31FL3190_PWM(0), 0x00 },
|
||||
{ IS31FL3190_PWM(1), 0x00 },
|
||||
{ IS31FL3190_PWM(2), 0x00 },
|
||||
};
|
||||
|
||||
static const struct is31fl319x_chipdef is31fl3193_cdef = {
|
||||
.num_leds = 3,
|
||||
static struct regmap_config is31fl3190_regmap_config = {
|
||||
.reg_bits = 8,
|
||||
.val_bits = 8,
|
||||
.max_register = IS31FL3190_RESET,
|
||||
.cache_type = REGCACHE_FLAT,
|
||||
.readable_reg = is31fl319x_readable_reg,
|
||||
.volatile_reg = is31fl3190_volatile_reg,
|
||||
.reg_defaults = is31fl3190_reg_defaults,
|
||||
.num_reg_defaults = ARRAY_SIZE(is31fl3190_reg_defaults),
|
||||
};
|
||||
|
||||
static const struct is31fl319x_chipdef is31fl3196_cdef = {
|
||||
.num_leds = 6,
|
||||
static bool is31fl3196_volatile_reg(struct device *dev, unsigned int reg)
|
||||
{
|
||||
/* volatile registers are not cached */
|
||||
switch (reg) {
|
||||
case IS31FL3196_DATA_UPDATE:
|
||||
case IS31FL3196_TIME_UPDATE:
|
||||
case IS31FL3196_RESET:
|
||||
return true; /* always write-through */
|
||||
default:
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
static const struct reg_default is31fl3196_reg_defaults[] = {
|
||||
{ IS31FL3196_CONFIG1, 0x00 },
|
||||
{ IS31FL3196_CONFIG2, 0x00 },
|
||||
{ IS31FL3196_PWM(0), 0x00 },
|
||||
{ IS31FL3196_PWM(1), 0x00 },
|
||||
{ IS31FL3196_PWM(2), 0x00 },
|
||||
{ IS31FL3196_PWM(3), 0x00 },
|
||||
{ IS31FL3196_PWM(4), 0x00 },
|
||||
{ IS31FL3196_PWM(5), 0x00 },
|
||||
{ IS31FL3196_PWM(6), 0x00 },
|
||||
{ IS31FL3196_PWM(7), 0x00 },
|
||||
{ IS31FL3196_PWM(8), 0x00 },
|
||||
};
|
||||
|
||||
static const struct is31fl319x_chipdef is31fl3199_cdef = {
|
||||
.num_leds = 9,
|
||||
static struct regmap_config is31fl3196_regmap_config = {
|
||||
.reg_bits = 8,
|
||||
.val_bits = 8,
|
||||
.max_register = IS31FL3196_REG_CNT,
|
||||
.cache_type = REGCACHE_FLAT,
|
||||
.readable_reg = is31fl319x_readable_reg,
|
||||
.volatile_reg = is31fl3196_volatile_reg,
|
||||
.reg_defaults = is31fl3196_reg_defaults,
|
||||
.num_reg_defaults = ARRAY_SIZE(is31fl3196_reg_defaults),
|
||||
};
|
||||
|
||||
static const struct of_device_id of_is31fl319x_match[] = {
|
||||
{ .compatible = "issi,is31fl3190", .data = &is31fl3190_cdef, },
|
||||
{ .compatible = "issi,is31fl3191", .data = &is31fl3190_cdef, },
|
||||
{ .compatible = "issi,is31fl3193", .data = &is31fl3193_cdef, },
|
||||
{ .compatible = "issi,is31fl3196", .data = &is31fl3196_cdef, },
|
||||
{ .compatible = "issi,is31fl3199", .data = &is31fl3199_cdef, },
|
||||
{ .compatible = "si-en,sn3199", .data = &is31fl3199_cdef, },
|
||||
{ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, of_is31fl319x_match);
|
||||
|
||||
static int is31fl319x_brightness_set(struct led_classdev *cdev,
|
||||
static int is31fl3190_brightness_set(struct led_classdev *cdev,
|
||||
enum led_brightness brightness)
|
||||
{
|
||||
struct is31fl319x_led *led = container_of(cdev, struct is31fl319x_led,
|
||||
cdev);
|
||||
struct is31fl319x_led *led = container_of(cdev, struct is31fl319x_led, cdev);
|
||||
struct is31fl319x_chip *is31 = led->chip;
|
||||
int chan = led - is31->leds;
|
||||
int ret;
|
||||
int i;
|
||||
u8 ctrl1 = 0, ctrl2 = 0;
|
||||
u8 ctrl = 0;
|
||||
|
||||
dev_dbg(&is31->client->dev, "%s %d: %d\n", __func__, chan, brightness);
|
||||
dev_dbg(&is31->client->dev, "channel %d: %d\n", chan, brightness);
|
||||
|
||||
mutex_lock(&is31->lock);
|
||||
|
||||
/* update PWM register */
|
||||
ret = regmap_write(is31->regmap, IS31FL319X_PWM(chan), brightness);
|
||||
ret = regmap_write(is31->regmap, IS31FL3190_PWM(chan), brightness);
|
||||
if (ret < 0)
|
||||
goto out;
|
||||
|
||||
|
|
@ -137,9 +217,61 @@ static int is31fl319x_brightness_set(struct led_classdev *cdev,
|
|||
* the current setting, we read from the regmap cache
|
||||
*/
|
||||
|
||||
ret = regmap_read(is31->regmap, IS31FL319X_PWM(i), &pwm_value);
|
||||
dev_dbg(&is31->client->dev, "%s read %d: ret=%d: %d\n",
|
||||
__func__, i, ret, pwm_value);
|
||||
ret = regmap_read(is31->regmap, IS31FL3190_PWM(i), &pwm_value);
|
||||
on = ret >= 0 && pwm_value > LED_OFF;
|
||||
|
||||
ctrl |= on << i;
|
||||
}
|
||||
|
||||
if (ctrl > 0) {
|
||||
dev_dbg(&is31->client->dev, "power up %02x\n", ctrl);
|
||||
regmap_write(is31->regmap, IS31FL3190_LEDCONTROL, ctrl);
|
||||
/* update PWMs */
|
||||
regmap_write(is31->regmap, IS31FL3190_DATA_UPDATE, 0x00);
|
||||
/* enable chip from shut down and enable all channels */
|
||||
ret = regmap_write(is31->regmap, IS31FL319X_SHUTDOWN, 0x20);
|
||||
} else {
|
||||
dev_dbg(&is31->client->dev, "power down\n");
|
||||
/* shut down (no need to clear LEDCONTROL) */
|
||||
ret = regmap_write(is31->regmap, IS31FL319X_SHUTDOWN, 0x01);
|
||||
}
|
||||
|
||||
out:
|
||||
mutex_unlock(&is31->lock);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int is31fl3196_brightness_set(struct led_classdev *cdev,
|
||||
enum led_brightness brightness)
|
||||
{
|
||||
struct is31fl319x_led *led = container_of(cdev, struct is31fl319x_led, cdev);
|
||||
struct is31fl319x_chip *is31 = led->chip;
|
||||
int chan = led - is31->leds;
|
||||
int ret;
|
||||
int i;
|
||||
u8 ctrl1 = 0, ctrl2 = 0;
|
||||
|
||||
dev_dbg(&is31->client->dev, "channel %d: %d\n", chan, brightness);
|
||||
|
||||
mutex_lock(&is31->lock);
|
||||
|
||||
/* update PWM register */
|
||||
ret = regmap_write(is31->regmap, IS31FL3196_PWM(chan), brightness);
|
||||
if (ret < 0)
|
||||
goto out;
|
||||
|
||||
/* read current brightness of all PWM channels */
|
||||
for (i = 0; i < is31->cdef->num_leds; i++) {
|
||||
unsigned int pwm_value;
|
||||
bool on;
|
||||
|
||||
/*
|
||||
* since neither cdev nor the chip can provide
|
||||
* the current setting, we read from the regmap cache
|
||||
*/
|
||||
|
||||
ret = regmap_read(is31->regmap, IS31FL3196_PWM(i), &pwm_value);
|
||||
on = ret >= 0 && pwm_value > LED_OFF;
|
||||
|
||||
if (i < 3)
|
||||
|
|
@ -153,10 +285,10 @@ static int is31fl319x_brightness_set(struct led_classdev *cdev,
|
|||
if (ctrl1 > 0 || ctrl2 > 0) {
|
||||
dev_dbg(&is31->client->dev, "power up %02x %02x\n",
|
||||
ctrl1, ctrl2);
|
||||
regmap_write(is31->regmap, IS31FL319X_CTRL1, ctrl1);
|
||||
regmap_write(is31->regmap, IS31FL319X_CTRL2, ctrl2);
|
||||
regmap_write(is31->regmap, IS31FL3196_CTRL1, ctrl1);
|
||||
regmap_write(is31->regmap, IS31FL3196_CTRL2, ctrl2);
|
||||
/* update PWMs */
|
||||
regmap_write(is31->regmap, IS31FL319X_DATA_UPDATE, 0x00);
|
||||
regmap_write(is31->regmap, IS31FL3196_DATA_UPDATE, 0x00);
|
||||
/* enable chip from shut down */
|
||||
ret = regmap_write(is31->regmap, IS31FL319X_SHUTDOWN, 0x01);
|
||||
} else {
|
||||
|
|
@ -171,92 +303,141 @@ static int is31fl319x_brightness_set(struct led_classdev *cdev,
|
|||
return ret;
|
||||
}
|
||||
|
||||
static int is31fl319x_parse_child_dt(const struct device *dev,
|
||||
const struct device_node *child,
|
||||
struct is31fl319x_led *led)
|
||||
static const struct is31fl319x_chipdef is31fl3190_cdef = {
|
||||
.num_leds = 1,
|
||||
.reset_reg = IS31FL3190_RESET,
|
||||
.is31fl319x_regmap_config = &is31fl3190_regmap_config,
|
||||
.brightness_set = is31fl3190_brightness_set,
|
||||
.current_default = IS31FL3190_CURRENT_uA_DEFAULT,
|
||||
.current_min = IS31FL3190_CURRENT_uA_MIN,
|
||||
.current_max = IS31FL3190_CURRENT_uA_MAX,
|
||||
.is_3196or3199 = false,
|
||||
};
|
||||
|
||||
static const struct is31fl319x_chipdef is31fl3193_cdef = {
|
||||
.num_leds = 3,
|
||||
.reset_reg = IS31FL3190_RESET,
|
||||
.is31fl319x_regmap_config = &is31fl3190_regmap_config,
|
||||
.brightness_set = is31fl3190_brightness_set,
|
||||
.current_default = IS31FL3190_CURRENT_uA_DEFAULT,
|
||||
.current_min = IS31FL3190_CURRENT_uA_MIN,
|
||||
.current_max = IS31FL3190_CURRENT_uA_MAX,
|
||||
.is_3196or3199 = false,
|
||||
};
|
||||
|
||||
static const struct is31fl319x_chipdef is31fl3196_cdef = {
|
||||
.num_leds = 6,
|
||||
.reset_reg = IS31FL3196_RESET,
|
||||
.is31fl319x_regmap_config = &is31fl3196_regmap_config,
|
||||
.brightness_set = is31fl3196_brightness_set,
|
||||
.current_default = IS31FL3196_CURRENT_uA_DEFAULT,
|
||||
.current_min = IS31FL3196_CURRENT_uA_MIN,
|
||||
.current_max = IS31FL3196_CURRENT_uA_MAX,
|
||||
.is_3196or3199 = true,
|
||||
};
|
||||
|
||||
static const struct is31fl319x_chipdef is31fl3199_cdef = {
|
||||
.num_leds = 9,
|
||||
.reset_reg = IS31FL3196_RESET,
|
||||
.is31fl319x_regmap_config = &is31fl3196_regmap_config,
|
||||
.brightness_set = is31fl3196_brightness_set,
|
||||
.current_default = IS31FL3196_CURRENT_uA_DEFAULT,
|
||||
.current_min = IS31FL3196_CURRENT_uA_MIN,
|
||||
.current_max = IS31FL3196_CURRENT_uA_MAX,
|
||||
.is_3196or3199 = true,
|
||||
};
|
||||
|
||||
static const struct of_device_id of_is31fl319x_match[] = {
|
||||
{ .compatible = "issi,is31fl3190", .data = &is31fl3190_cdef, },
|
||||
{ .compatible = "issi,is31fl3191", .data = &is31fl3190_cdef, },
|
||||
{ .compatible = "issi,is31fl3193", .data = &is31fl3193_cdef, },
|
||||
{ .compatible = "issi,is31fl3196", .data = &is31fl3196_cdef, },
|
||||
{ .compatible = "issi,is31fl3199", .data = &is31fl3199_cdef, },
|
||||
{ .compatible = "si-en,sn3190", .data = &is31fl3190_cdef, },
|
||||
{ .compatible = "si-en,sn3191", .data = &is31fl3190_cdef, },
|
||||
{ .compatible = "si-en,sn3193", .data = &is31fl3193_cdef, },
|
||||
{ .compatible = "si-en,sn3196", .data = &is31fl3196_cdef, },
|
||||
{ .compatible = "si-en,sn3199", .data = &is31fl3199_cdef, },
|
||||
{ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, of_is31fl319x_match);
|
||||
|
||||
static int is31fl319x_parse_child_fw(const struct device *dev,
|
||||
const struct fwnode_handle *child,
|
||||
struct is31fl319x_led *led,
|
||||
struct is31fl319x_chip *is31)
|
||||
{
|
||||
struct led_classdev *cdev = &led->cdev;
|
||||
int ret;
|
||||
|
||||
if (of_property_read_string(child, "label", &cdev->name))
|
||||
cdev->name = child->name;
|
||||
if (fwnode_property_read_string(child, "label", &cdev->name))
|
||||
cdev->name = fwnode_get_name(child);
|
||||
|
||||
ret = of_property_read_string(child, "linux,default-trigger",
|
||||
&cdev->default_trigger);
|
||||
ret = fwnode_property_read_string(child, "linux,default-trigger", &cdev->default_trigger);
|
||||
if (ret < 0 && ret != -EINVAL) /* is optional */
|
||||
return ret;
|
||||
|
||||
led->max_microamp = IS31FL319X_CURRENT_DEFAULT;
|
||||
ret = of_property_read_u32(child, "led-max-microamp",
|
||||
&led->max_microamp);
|
||||
led->max_microamp = is31->cdef->current_default;
|
||||
ret = fwnode_property_read_u32(child, "led-max-microamp", &led->max_microamp);
|
||||
if (!ret) {
|
||||
if (led->max_microamp < IS31FL319X_CURRENT_MIN)
|
||||
if (led->max_microamp < is31->cdef->current_min)
|
||||
return -EINVAL; /* not supported */
|
||||
led->max_microamp = min(led->max_microamp,
|
||||
IS31FL319X_CURRENT_MAX);
|
||||
is31->cdef->current_max);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int is31fl319x_parse_dt(struct device *dev,
|
||||
struct is31fl319x_chip *is31)
|
||||
static int is31fl319x_parse_fw(struct device *dev, struct is31fl319x_chip *is31)
|
||||
{
|
||||
struct device_node *np = dev_of_node(dev), *child;
|
||||
struct fwnode_handle *fwnode = dev_fwnode(dev), *child;
|
||||
int count;
|
||||
int ret;
|
||||
|
||||
if (!np)
|
||||
return -ENODEV;
|
||||
|
||||
is31->shutdown_gpio = devm_gpiod_get_optional(dev,
|
||||
"shutdown",
|
||||
GPIOD_OUT_HIGH);
|
||||
if (IS_ERR(is31->shutdown_gpio)) {
|
||||
ret = PTR_ERR(is31->shutdown_gpio);
|
||||
dev_err(dev, "Failed to get shutdown gpio: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
is31->shutdown_gpio = devm_gpiod_get_optional(dev, "shutdown", GPIOD_OUT_HIGH);
|
||||
if (IS_ERR(is31->shutdown_gpio))
|
||||
return dev_err_probe(dev, PTR_ERR(is31->shutdown_gpio),
|
||||
"Failed to get shutdown gpio\n");
|
||||
|
||||
is31->cdef = device_get_match_data(dev);
|
||||
|
||||
count = of_get_available_child_count(np);
|
||||
count = 0;
|
||||
fwnode_for_each_available_child_node(fwnode, child)
|
||||
count++;
|
||||
|
||||
dev_dbg(dev, "probing with %d leds defined in DT\n", count);
|
||||
|
||||
if (!count || count > is31->cdef->num_leds) {
|
||||
dev_err(dev, "Number of leds defined must be between 1 and %u\n",
|
||||
is31->cdef->num_leds);
|
||||
return -ENODEV;
|
||||
}
|
||||
if (!count || count > is31->cdef->num_leds)
|
||||
return dev_err_probe(dev, -ENODEV,
|
||||
"Number of leds defined must be between 1 and %u\n",
|
||||
is31->cdef->num_leds);
|
||||
|
||||
for_each_available_child_of_node(np, child) {
|
||||
fwnode_for_each_available_child_node(fwnode, child) {
|
||||
struct is31fl319x_led *led;
|
||||
u32 reg;
|
||||
|
||||
ret = of_property_read_u32(child, "reg", ®);
|
||||
ret = fwnode_property_read_u32(child, "reg", ®);
|
||||
if (ret) {
|
||||
dev_err(dev, "Failed to read led 'reg' property\n");
|
||||
ret = dev_err_probe(dev, ret, "Failed to read led 'reg' property\n");
|
||||
goto put_child_node;
|
||||
}
|
||||
|
||||
if (reg < 1 || reg > is31->cdef->num_leds) {
|
||||
dev_err(dev, "invalid led reg %u\n", reg);
|
||||
ret = -EINVAL;
|
||||
ret = dev_err_probe(dev, -EINVAL, "invalid led reg %u\n", reg);
|
||||
goto put_child_node;
|
||||
}
|
||||
|
||||
led = &is31->leds[reg - 1];
|
||||
|
||||
if (led->configured) {
|
||||
dev_err(dev, "led %u is already configured\n", reg);
|
||||
ret = -EINVAL;
|
||||
ret = dev_err_probe(dev, -EINVAL, "led %u is already configured\n", reg);
|
||||
goto put_child_node;
|
||||
}
|
||||
|
||||
ret = is31fl319x_parse_child_dt(dev, child, led);
|
||||
ret = is31fl319x_parse_child_fw(dev, child, led, is31);
|
||||
if (ret) {
|
||||
dev_err(dev, "led %u DT parsing failed\n", reg);
|
||||
ret = dev_err_probe(dev, ret, "led %u DT parsing failed\n", reg);
|
||||
goto put_child_node;
|
||||
}
|
||||
|
||||
|
|
@ -264,82 +445,62 @@ static int is31fl319x_parse_dt(struct device *dev,
|
|||
}
|
||||
|
||||
is31->audio_gain_db = 0;
|
||||
ret = of_property_read_u32(np, "audio-gain-db", &is31->audio_gain_db);
|
||||
if (!ret)
|
||||
is31->audio_gain_db = min(is31->audio_gain_db,
|
||||
IS31FL319X_AUDIO_GAIN_DB_MAX);
|
||||
if (is31->cdef->is_3196or3199) {
|
||||
ret = fwnode_property_read_u32(fwnode, "audio-gain-db", &is31->audio_gain_db);
|
||||
if (!ret)
|
||||
is31->audio_gain_db = min(is31->audio_gain_db,
|
||||
IS31FL3196_AUDIO_GAIN_DB_MAX);
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
put_child_node:
|
||||
of_node_put(child);
|
||||
fwnode_handle_put(child);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static bool is31fl319x_readable_reg(struct device *dev, unsigned int reg)
|
||||
{ /* we have no readable registers */
|
||||
return false;
|
||||
}
|
||||
|
||||
static bool is31fl319x_volatile_reg(struct device *dev, unsigned int reg)
|
||||
{ /* volatile registers are not cached */
|
||||
switch (reg) {
|
||||
case IS31FL319X_DATA_UPDATE:
|
||||
case IS31FL319X_TIME_UPDATE:
|
||||
case IS31FL319X_RESET:
|
||||
return true; /* always write-through */
|
||||
static inline int is31fl3190_microamp_to_cs(struct device *dev, u32 microamp)
|
||||
{
|
||||
switch (microamp) {
|
||||
case 5000:
|
||||
return IS31FL3190_CURRENT_5_mA;
|
||||
case 10000:
|
||||
return IS31FL3190_CURRENT_10_mA;
|
||||
case 17500:
|
||||
return IS31FL3190_CURRENT_17dot5_mA;
|
||||
case 30000:
|
||||
return IS31FL3190_CURRENT_30_mA;
|
||||
case 42000:
|
||||
return IS31FL3190_CURRENT_42_mA;
|
||||
default:
|
||||
return false;
|
||||
dev_warn(dev, "Unsupported current value: %d, using 5000 µA!\n", microamp);
|
||||
return IS31FL3190_CURRENT_5_mA;
|
||||
}
|
||||
}
|
||||
|
||||
static const struct reg_default is31fl319x_reg_defaults[] = {
|
||||
{ IS31FL319X_CONFIG1, 0x00},
|
||||
{ IS31FL319X_CONFIG2, 0x00},
|
||||
{ IS31FL319X_PWM(0), 0x00},
|
||||
{ IS31FL319X_PWM(1), 0x00},
|
||||
{ IS31FL319X_PWM(2), 0x00},
|
||||
{ IS31FL319X_PWM(3), 0x00},
|
||||
{ IS31FL319X_PWM(4), 0x00},
|
||||
{ IS31FL319X_PWM(5), 0x00},
|
||||
{ IS31FL319X_PWM(6), 0x00},
|
||||
{ IS31FL319X_PWM(7), 0x00},
|
||||
{ IS31FL319X_PWM(8), 0x00},
|
||||
};
|
||||
static inline int is31fl3196_microamp_to_cs(struct device *dev, u32 microamp)
|
||||
{
|
||||
/* round down to nearest supported value (range check done by caller) */
|
||||
u32 step = microamp / IS31FL3196_CURRENT_uA_STEP;
|
||||
|
||||
static struct regmap_config regmap_config = {
|
||||
.reg_bits = 8,
|
||||
.val_bits = 8,
|
||||
.max_register = IS31FL319X_REG_CNT,
|
||||
.cache_type = REGCACHE_FLAT,
|
||||
.readable_reg = is31fl319x_readable_reg,
|
||||
.volatile_reg = is31fl319x_volatile_reg,
|
||||
.reg_defaults = is31fl319x_reg_defaults,
|
||||
.num_reg_defaults = ARRAY_SIZE(is31fl319x_reg_defaults),
|
||||
};
|
||||
|
||||
static inline int is31fl319x_microamp_to_cs(struct device *dev, u32 microamp)
|
||||
{ /* round down to nearest supported value (range check done by caller) */
|
||||
u32 step = microamp / IS31FL319X_CURRENT_STEP;
|
||||
|
||||
return ((IS31FL319X_CONFIG2_CS_STEP_REF - step) &
|
||||
IS31FL319X_CONFIG2_CS_MASK) <<
|
||||
IS31FL319X_CONFIG2_CS_SHIFT; /* CS encoding */
|
||||
return ((IS31FL3196_CONFIG2_CS_STEP_REF - step) &
|
||||
IS31FL3196_CONFIG2_CS_MASK) <<
|
||||
IS31FL3196_CONFIG2_CS_SHIFT; /* CS encoding */
|
||||
}
|
||||
|
||||
static inline int is31fl319x_db_to_gain(u32 dezibel)
|
||||
{ /* round down to nearest supported value (range check done by caller) */
|
||||
return dezibel / IS31FL319X_AUDIO_GAIN_DB_STEP;
|
||||
static inline int is31fl3196_db_to_gain(u32 dezibel)
|
||||
{
|
||||
/* round down to nearest supported value (range check done by caller) */
|
||||
return dezibel / IS31FL3196_AUDIO_GAIN_DB_STEP;
|
||||
}
|
||||
|
||||
static int is31fl319x_probe(struct i2c_client *client,
|
||||
const struct i2c_device_id *id)
|
||||
static int is31fl319x_probe(struct i2c_client *client)
|
||||
{
|
||||
struct is31fl319x_chip *is31;
|
||||
struct device *dev = &client->dev;
|
||||
int err;
|
||||
int i = 0;
|
||||
u32 aggregated_led_microamp = IS31FL319X_CURRENT_MAX;
|
||||
u32 aggregated_led_microamp;
|
||||
|
||||
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
|
||||
return -EIO;
|
||||
|
|
@ -349,10 +510,13 @@ static int is31fl319x_probe(struct i2c_client *client,
|
|||
return -ENOMEM;
|
||||
|
||||
mutex_init(&is31->lock);
|
||||
|
||||
err = is31fl319x_parse_dt(&client->dev, is31);
|
||||
err = devm_add_action(dev, (void (*)(void *))mutex_destroy, &is31->lock);
|
||||
if (err)
|
||||
goto free_mutex;
|
||||
return err;
|
||||
|
||||
err = is31fl319x_parse_fw(&client->dev, is31);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
if (is31->shutdown_gpio) {
|
||||
gpiod_direction_output(is31->shutdown_gpio, 0);
|
||||
|
|
@ -361,37 +525,35 @@ static int is31fl319x_probe(struct i2c_client *client,
|
|||
}
|
||||
|
||||
is31->client = client;
|
||||
is31->regmap = devm_regmap_init_i2c(client, ®map_config);
|
||||
if (IS_ERR(is31->regmap)) {
|
||||
dev_err(&client->dev, "failed to allocate register map\n");
|
||||
err = PTR_ERR(is31->regmap);
|
||||
goto free_mutex;
|
||||
}
|
||||
is31->regmap = devm_regmap_init_i2c(client, is31->cdef->is31fl319x_regmap_config);
|
||||
if (IS_ERR(is31->regmap))
|
||||
return dev_err_probe(dev, PTR_ERR(is31->regmap), "failed to allocate register map\n");
|
||||
|
||||
i2c_set_clientdata(client, is31);
|
||||
|
||||
/* check for write-reply from chip (we can't read any registers) */
|
||||
err = regmap_write(is31->regmap, IS31FL319X_RESET, 0x00);
|
||||
if (err < 0) {
|
||||
dev_err(&client->dev, "no response from chip write: err = %d\n",
|
||||
err);
|
||||
err = -EIO; /* does not answer */
|
||||
goto free_mutex;
|
||||
}
|
||||
err = regmap_write(is31->regmap, is31->cdef->reset_reg, 0x00);
|
||||
if (err < 0)
|
||||
return dev_err_probe(dev, err, "no response from chip write\n");
|
||||
|
||||
/*
|
||||
* Kernel conventions require per-LED led-max-microamp property.
|
||||
* But the chip does not allow to limit individual LEDs.
|
||||
* So we take minimum from all subnodes for safety of hardware.
|
||||
*/
|
||||
aggregated_led_microamp = is31->cdef->current_max;
|
||||
for (i = 0; i < is31->cdef->num_leds; i++)
|
||||
if (is31->leds[i].configured &&
|
||||
is31->leds[i].max_microamp < aggregated_led_microamp)
|
||||
aggregated_led_microamp = is31->leds[i].max_microamp;
|
||||
|
||||
regmap_write(is31->regmap, IS31FL319X_CONFIG2,
|
||||
is31fl319x_microamp_to_cs(dev, aggregated_led_microamp) |
|
||||
is31fl319x_db_to_gain(is31->audio_gain_db));
|
||||
if (is31->cdef->is_3196or3199)
|
||||
regmap_write(is31->regmap, IS31FL3196_CONFIG2,
|
||||
is31fl3196_microamp_to_cs(dev, aggregated_led_microamp) |
|
||||
is31fl3196_db_to_gain(is31->audio_gain_db));
|
||||
else
|
||||
regmap_update_bits(is31->regmap, IS31FL3190_CURRENT, IS31FL3190_CURRENT_MASK,
|
||||
is31fl3190_microamp_to_cs(dev, aggregated_led_microamp));
|
||||
|
||||
for (i = 0; i < is31->cdef->num_leds; i++) {
|
||||
struct is31fl319x_led *led = &is31->leds[i];
|
||||
|
|
@ -400,26 +562,14 @@ static int is31fl319x_probe(struct i2c_client *client,
|
|||
continue;
|
||||
|
||||
led->chip = is31;
|
||||
led->cdev.brightness_set_blocking = is31fl319x_brightness_set;
|
||||
led->cdev.brightness_set_blocking = is31->cdef->brightness_set;
|
||||
|
||||
err = devm_led_classdev_register(&client->dev, &led->cdev);
|
||||
if (err < 0)
|
||||
goto free_mutex;
|
||||
return err;
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
free_mutex:
|
||||
mutex_destroy(&is31->lock);
|
||||
return err;
|
||||
}
|
||||
|
||||
static int is31fl319x_remove(struct i2c_client *client)
|
||||
{
|
||||
struct is31fl319x_chip *is31 = i2c_get_clientdata(client);
|
||||
|
||||
mutex_destroy(&is31->lock);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
@ -432,6 +582,10 @@ static const struct i2c_device_id is31fl319x_id[] = {
|
|||
{ "is31fl3193" },
|
||||
{ "is31fl3196" },
|
||||
{ "is31fl3199" },
|
||||
{ "sn3190" },
|
||||
{ "sn3191" },
|
||||
{ "sn3193" },
|
||||
{ "sn3196" },
|
||||
{ "sn3199" },
|
||||
{},
|
||||
};
|
||||
|
|
@ -440,10 +594,9 @@ MODULE_DEVICE_TABLE(i2c, is31fl319x_id);
|
|||
static struct i2c_driver is31fl319x_driver = {
|
||||
.driver = {
|
||||
.name = "leds-is31fl319x",
|
||||
.of_match_table = of_match_ptr(of_is31fl319x_match),
|
||||
.of_match_table = of_is31fl319x_match,
|
||||
},
|
||||
.probe = is31fl319x_probe,
|
||||
.remove = is31fl319x_remove,
|
||||
.probe_new = is31fl319x_probe,
|
||||
.id_table = is31fl319x_id,
|
||||
};
|
||||
|
||||
|
|
|
|||
|
|
@ -239,9 +239,6 @@ static int omnia_leds_probe(struct i2c_client *client,
|
|||
led += ret;
|
||||
}
|
||||
|
||||
if (devm_device_add_groups(dev, omnia_led_controller_groups))
|
||||
dev_warn(dev, "Could not add attribute group!\n");
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
@ -283,6 +280,7 @@ static struct i2c_driver omnia_leds_driver = {
|
|||
.driver = {
|
||||
.name = "leds-turris-omnia",
|
||||
.of_match_table = of_omnia_leds_match,
|
||||
.dev_groups = omnia_led_controller_groups,
|
||||
},
|
||||
};
|
||||
|
||||
|
|
|
|||
|
|
@ -19,6 +19,7 @@
|
|||
struct pwm_led {
|
||||
struct pwm_device *pwm;
|
||||
struct pwm_state state;
|
||||
bool active_low;
|
||||
};
|
||||
|
||||
struct pwm_mc_led {
|
||||
|
|
@ -45,6 +46,9 @@ static int led_pwm_mc_set(struct led_classdev *cdev,
|
|||
duty *= mc_cdev->subled_info[i].brightness;
|
||||
do_div(duty, cdev->max_brightness);
|
||||
|
||||
if (priv->leds[i].active_low)
|
||||
duty = priv->leds[i].state.period - duty;
|
||||
|
||||
priv->leds[i].state.duty_cycle = duty;
|
||||
priv->leds[i].state.enabled = duty > 0;
|
||||
ret = pwm_apply_state(priv->leds[i].pwm,
|
||||
|
|
@ -72,11 +76,11 @@ static int iterate_subleds(struct device *dev, struct pwm_mc_led *priv,
|
|||
pwmled = &priv->leds[priv->mc_cdev.num_colors];
|
||||
pwmled->pwm = devm_fwnode_pwm_get(dev, fwnode, NULL);
|
||||
if (IS_ERR(pwmled->pwm)) {
|
||||
ret = PTR_ERR(pwmled->pwm);
|
||||
dev_err(dev, "unable to request PWM: %d\n", ret);
|
||||
ret = dev_err_probe(dev, PTR_ERR(pwmled->pwm), "unable to request PWM\n");
|
||||
goto release_fwnode;
|
||||
}
|
||||
pwm_init_state(pwmled->pwm, &pwmled->state);
|
||||
pwmled->active_low = fwnode_property_read_bool(fwnode, "active-low");
|
||||
|
||||
ret = fwnode_property_read_u32(fwnode, "color", &color);
|
||||
if (ret) {
|
||||
|
|
|
|||
Loading…
Reference in a new issue