mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-23 09:56:00 +00:00
Input: cap11xx - add LED support
Several cap11xx variants have LEDs that be can be controlled; let's plug the driver into the LED subsystem. Signed-off-by: Matt Ranostay <mranostay@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Matt Ranostay
Dmitry Torokhov
parent
7229b87bb2
commit
efe3b616f8
@ -55,5 +55,24 @@ i2c_controller {
|
||||
<105>, /* KEY_LEFT */
|
||||
<109>, /* KEY_PAGEDOWN */
|
||||
<104>; /* KEY_PAGEUP */
|
||||
|
||||
#address-cells = <1>;
|
||||
#size-cells = <0>;
|
||||
|
||||
usr@0 {
|
||||
label = "cap11xx:green:usr0";
|
||||
reg = <0>;
|
||||
};
|
||||
|
||||
usr@1 {
|
||||
label = "cap11xx:green:usr1";
|
||||
reg = <1>;
|
||||
};
|
||||
|
||||
alive@2 {
|
||||
label = "cap11xx:green:alive";
|
||||
reg = <2>;
|
||||
linux,default_trigger = "heartbeat";
|
||||
};
|
||||
};
|
||||
}
|
||||
|
||||
@ -12,6 +12,7 @@
|
||||
#include <linux/module.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/input.h>
|
||||
#include <linux/leds.h>
|
||||
#include <linux/of_irq.h>
|
||||
#include <linux/regmap.h>
|
||||
#include <linux/i2c.h>
|
||||
@ -47,6 +48,20 @@
|
||||
#define CAP11XX_REG_CONFIG2 0x44
|
||||
#define CAP11XX_REG_CONFIG2_ALT_POL BIT(6)
|
||||
#define CAP11XX_REG_SENSOR_BASE_CNT(X) (0x50 + (X))
|
||||
#define CAP11XX_REG_LED_POLARITY 0x73
|
||||
#define CAP11XX_REG_LED_OUTPUT_CONTROL 0x74
|
||||
|
||||
#define CAP11XX_REG_LED_DUTY_CYCLE_1 0x90
|
||||
#define CAP11XX_REG_LED_DUTY_CYCLE_2 0x91
|
||||
#define CAP11XX_REG_LED_DUTY_CYCLE_3 0x92
|
||||
#define CAP11XX_REG_LED_DUTY_CYCLE_4 0x93
|
||||
|
||||
#define CAP11XX_REG_LED_DUTY_MIN_MASK (0x0f)
|
||||
#define CAP11XX_REG_LED_DUTY_MIN_MASK_SHIFT (0)
|
||||
#define CAP11XX_REG_LED_DUTY_MAX_MASK (0xf0)
|
||||
#define CAP11XX_REG_LED_DUTY_MAX_MASK_SHIFT (4)
|
||||
#define CAP11XX_REG_LED_DUTY_MAX_VALUE (15)
|
||||
|
||||
#define CAP11XX_REG_SENSOR_CALIB (0xb1 + (X))
|
||||
#define CAP11XX_REG_SENSOR_CALIB_LSB1 0xb9
|
||||
#define CAP11XX_REG_SENSOR_CALIB_LSB2 0xba
|
||||
@ -56,10 +71,23 @@
|
||||
|
||||
#define CAP11XX_MANUFACTURER_ID 0x5d
|
||||
|
||||
#ifdef CONFIG_LEDS_CLASS
|
||||
struct cap11xx_led {
|
||||
struct cap11xx_priv *priv;
|
||||
struct led_classdev cdev;
|
||||
struct work_struct work;
|
||||
u32 reg;
|
||||
enum led_brightness new_brightness;
|
||||
};
|
||||
#endif
|
||||
|
||||
struct cap11xx_priv {
|
||||
struct regmap *regmap;
|
||||
struct input_dev *idev;
|
||||
|
||||
struct cap11xx_led *leds;
|
||||
int num_leds;
|
||||
|
||||
/* config */
|
||||
u32 keycodes[];
|
||||
};
|
||||
@ -67,6 +95,7 @@ struct cap11xx_priv {
|
||||
struct cap11xx_hw_model {
|
||||
u8 product_id;
|
||||
unsigned int num_channels;
|
||||
unsigned int num_leds;
|
||||
};
|
||||
|
||||
enum {
|
||||
@ -76,9 +105,9 @@ enum {
|
||||
};
|
||||
|
||||
static const struct cap11xx_hw_model cap11xx_devices[] = {
|
||||
[CAP1106] = { .product_id = 0x55, .num_channels = 6 },
|
||||
[CAP1126] = { .product_id = 0x53, .num_channels = 6 },
|
||||
[CAP1188] = { .product_id = 0x50, .num_channels = 8 },
|
||||
[CAP1106] = { .product_id = 0x55, .num_channels = 6, .num_leds = 0 },
|
||||
[CAP1126] = { .product_id = 0x53, .num_channels = 6, .num_leds = 2 },
|
||||
[CAP1188] = { .product_id = 0x50, .num_channels = 8, .num_leds = 8 },
|
||||
};
|
||||
|
||||
static const struct reg_default cap11xx_reg_defaults[] = {
|
||||
@ -111,6 +140,7 @@ static const struct reg_default cap11xx_reg_defaults[] = {
|
||||
{ CAP11XX_REG_STANDBY_SENSITIVITY, 0x02 },
|
||||
{ CAP11XX_REG_STANDBY_THRESH, 0x40 },
|
||||
{ CAP11XX_REG_CONFIG2, 0x40 },
|
||||
{ CAP11XX_REG_LED_POLARITY, 0x00 },
|
||||
{ CAP11XX_REG_SENSOR_CALIB_LSB1, 0x00 },
|
||||
{ CAP11XX_REG_SENSOR_CALIB_LSB2, 0x00 },
|
||||
};
|
||||
@ -177,6 +207,12 @@ out:
|
||||
|
||||
static int cap11xx_set_sleep(struct cap11xx_priv *priv, bool sleep)
|
||||
{
|
||||
/*
|
||||
* DLSEEP mode will turn off all LEDS, prevent this
|
||||
*/
|
||||
if (IS_ENABLED(CONFIG_LEDS_CLASS) && priv->num_leds)
|
||||
return 0;
|
||||
|
||||
return regmap_update_bits(priv->regmap, CAP11XX_REG_MAIN_CONTROL,
|
||||
CAP11XX_REG_MAIN_CONTROL_DLSEEP,
|
||||
sleep ? CAP11XX_REG_MAIN_CONTROL_DLSEEP : 0);
|
||||
@ -196,6 +232,104 @@ static void cap11xx_input_close(struct input_dev *idev)
|
||||
cap11xx_set_sleep(priv, true);
|
||||
}
|
||||
|
||||
#ifdef CONFIG_LEDS_CLASS
|
||||
static void cap11xx_led_work(struct work_struct *work)
|
||||
{
|
||||
struct cap11xx_led *led = container_of(work, struct cap11xx_led, work);
|
||||
struct cap11xx_priv *priv = led->priv;
|
||||
int value = led->new_brightness;
|
||||
|
||||
/*
|
||||
* All LEDs share the same duty cycle as this is a HW limitation.
|
||||
* Brightness levels per LED are either 0 (OFF) and 1 (ON).
|
||||
*/
|
||||
regmap_update_bits(priv->regmap, CAP11XX_REG_LED_OUTPUT_CONTROL,
|
||||
BIT(led->reg), value ? BIT(led->reg) : 0);
|
||||
}
|
||||
|
||||
static void cap11xx_led_set(struct led_classdev *cdev,
|
||||
enum led_brightness value)
|
||||
{
|
||||
struct cap11xx_led *led = container_of(cdev, struct cap11xx_led, cdev);
|
||||
|
||||
if (led->new_brightness == value)
|
||||
return;
|
||||
|
||||
led->new_brightness = value;
|
||||
schedule_work(&led->work);
|
||||
}
|
||||
|
||||
static int cap11xx_init_leds(struct device *dev,
|
||||
struct cap11xx_priv *priv, int num_leds)
|
||||
{
|
||||
struct device_node *node = dev->of_node, *child;
|
||||
struct cap11xx_led *led;
|
||||
int cnt = of_get_child_count(node);
|
||||
int error;
|
||||
|
||||
if (!num_leds || !cnt)
|
||||
return 0;
|
||||
|
||||
if (cnt > num_leds)
|
||||
return -EINVAL;
|
||||
|
||||
led = devm_kcalloc(dev, cnt, sizeof(struct cap11xx_led), GFP_KERNEL);
|
||||
if (!led)
|
||||
return -ENOMEM;
|
||||
|
||||
priv->leds = led;
|
||||
|
||||
error = regmap_update_bits(priv->regmap,
|
||||
CAP11XX_REG_LED_OUTPUT_CONTROL, 0xff, 0);
|
||||
if (error)
|
||||
return error;
|
||||
|
||||
error = regmap_update_bits(priv->regmap, CAP11XX_REG_LED_DUTY_CYCLE_4,
|
||||
CAP11XX_REG_LED_DUTY_MAX_MASK,
|
||||
CAP11XX_REG_LED_DUTY_MAX_VALUE <<
|
||||
CAP11XX_REG_LED_DUTY_MAX_MASK_SHIFT);
|
||||
if (error)
|
||||
return error;
|
||||
|
||||
for_each_child_of_node(node, child) {
|
||||
u32 reg;
|
||||
|
||||
led->cdev.name =
|
||||
of_get_property(child, "label", NULL) ? : child->name;
|
||||
led->cdev.default_trigger =
|
||||
of_get_property(child, "linux,default-trigger", NULL);
|
||||
led->cdev.flags = 0;
|
||||
led->cdev.brightness_set = cap11xx_led_set;
|
||||
led->cdev.max_brightness = 1;
|
||||
led->cdev.brightness = LED_OFF;
|
||||
|
||||
error = of_property_read_u32(child, "reg", ®);
|
||||
if (error != 0 || reg >= num_leds)
|
||||
return -EINVAL;
|
||||
|
||||
led->reg = reg;
|
||||
led->priv = priv;
|
||||
|
||||
INIT_WORK(&led->work, cap11xx_led_work);
|
||||
|
||||
error = devm_led_classdev_register(dev, &led->cdev);
|
||||
if (error)
|
||||
return error;
|
||||
|
||||
priv->num_leds++;
|
||||
led++;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
#else
|
||||
static int cap11xx_init_leds(struct device *dev,
|
||||
struct cap11xx_priv *priv, int num_leds)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
static int cap11xx_i2c_probe(struct i2c_client *i2c_client,
|
||||
const struct i2c_device_id *id)
|
||||
{
|
||||
@ -316,6 +450,10 @@ static int cap11xx_i2c_probe(struct i2c_client *i2c_client,
|
||||
priv->idev->open = cap11xx_input_open;
|
||||
priv->idev->close = cap11xx_input_close;
|
||||
|
||||
error = cap11xx_init_leds(dev, priv, cap->num_leds);
|
||||
if (error)
|
||||
return error;
|
||||
|
||||
input_set_drvdata(priv->idev, priv);
|
||||
|
||||
/*
|
||||
|
||||
Loading…
Reference in New Issue
Block a user