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Initial classdev lightbar support

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This commit is contained in:
Christoffer Sandberg 2020-09-01 18:54:07 +02:00
parent 8c0a618f6b
commit 821c502823
1 changed files with 116 additions and 1 deletions
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117
src/uniwill_keyboard.h
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@ -24,6 +24,7 @@
#include <linux/keyboard.h>
#include <linux/timer.h>
#include <linux/delay.h>
#include <linux/leds.h>
#define UNIWILL_WMI_MGMT_GUID_BA "ABBC0F6D-8EA1-11D1-00A0-C90629100000"
#define UNIWILL_WMI_MGMT_GUID_BB "ABBC0F6E-8EA1-11D1-00A0-C90629100000"
@ -585,9 +586,113 @@ static int uw_kbd_bl_init(struct platform_device *dev)
return status;
}
static int uniwill_keyboard_probe(struct platform_device *dev)
#define UNIWILL_LIGHTBAR_LED_MAX_BRIGHTNESS 0x24
static void uniwill_write_lightbar_rgb(u8 red, u8 green, u8 blue)
{
union uw_ec_write_return reg_write_return;
uw_ec_write_func *__uw_ec_write_addr;
__uw_ec_write_addr = symbol_get(uw_ec_write_addr);
if (__uw_ec_write_addr) {
if (red <= UNIWILL_LIGHTBAR_LED_MAX_BRIGHTNESS) {
__uw_ec_write_addr(0x49, 0x07, red, 0x00, &reg_write_return);
}
if (green <= UNIWILL_LIGHTBAR_LED_MAX_BRIGHTNESS) {
__uw_ec_write_addr(0x4a, 0x07, green, 0x00, &reg_write_return);
}
if (blue <= UNIWILL_LIGHTBAR_LED_MAX_BRIGHTNESS) {
__uw_ec_write_addr(0x4b, 0x07, blue, 0x00, &reg_write_return);
}
} else {
TUXEDO_DEBUG("tuxedo-cc-wmi symbols not found\n");
}
if (__uw_ec_write_addr) symbol_put(uw_ec_write_addr);
}
static int uniwill_read_lightbar_rgb(u8 *red, u8 *green, u8 *blue)
{
int status;
union uw_ec_read_return reg_read_return;
uw_ec_read_func *__uw_ec_read_addr;
__uw_ec_read_addr = symbol_get(uw_ec_read_addr);
if (__uw_ec_read_addr) {
__uw_ec_read_addr(0x49, 0x07, &reg_read_return);
*red = reg_read_return.bytes.data_low;
__uw_ec_read_addr(0x4a, 0x07, &reg_read_return);
*green = reg_read_return.bytes.data_low;
__uw_ec_read_addr(0x4b, 0x07, &reg_read_return);
*blue = reg_read_return.bytes.data_low;
status = 0;
} else {
status = -EIO;
TUXEDO_DEBUG("tuxedo-cc-wmi symbols not found\n");
}
if (__uw_ec_read_addr) symbol_put(uw_ec_read_addr);
return status;
}
static int lightbar_set_blocking(struct led_classdev *led_cdev, enum led_brightness brightness)
{
u8 red = 0xff, green = 0xff, blue = 0xff;
if (strpbrk(led_cdev->name, "red") != 0) {
red = brightness;
} else if (strpbrk(led_cdev->name, "green") != 0) {
green = brightness;
} else if (strpbrk(led_cdev->name, "blue") != 0) {
blue = brightness;
}
uniwill_write_lightbar_rgb(red, green, blue);
return 0;
}
static enum led_brightness lightbar_get(struct led_classdev *led_cdev)
{
u8 red, green, blue;
uniwill_read_lightbar_rgb(&red, &green, &blue);
if (strpbrk(led_cdev->name, "red") != 0) {
return red;
} else if (strpbrk(led_cdev->name, "green") != 0) {
return green;
} else if (strpbrk(led_cdev->name, "blue") != 0) {
return blue;
}
return 0;
}
static struct led_classdev lightbar_led_classdevs[] = {
{
.name = "tuxedo:red:lightbar",
.max_brightness = UNIWILL_LIGHTBAR_LED_MAX_BRIGHTNESS,
.brightness_set_blocking = &lightbar_set_blocking,
.brightness_get = &lightbar_get
},
{
.name = "tuxedo:green:lightbar",
.max_brightness = UNIWILL_LIGHTBAR_LED_MAX_BRIGHTNESS,
.brightness_set_blocking = &lightbar_set_blocking,
.brightness_get = &lightbar_get
},
{
.name = "tuxedo:blue:lightbar",
.max_brightness = UNIWILL_LIGHTBAR_LED_MAX_BRIGHTNESS,
.brightness_set_blocking = &lightbar_set_blocking,
.brightness_get = &lightbar_get
}
};
static int uniwill_keyboard_probe(struct platform_device *dev)
{
int status, i;
// Look for for GUIDs used on uniwill devices
status =
@ -626,6 +731,10 @@ static int uniwill_keyboard_probe(struct platform_device *dev)
uw_kbd_bl_init(dev);
for (i = 0; i < 3; ++i) {
led_classdev_register(&dev->dev, &lightbar_led_classdevs[i]);
}
return 0;
err_remove_notifiers:
@ -638,6 +747,8 @@ err_remove_notifiers:
static int uniwill_keyboard_remove(struct platform_device *dev)
{
int i;
// Restore previous backlight enable state
if (uniwill_kbd_bl_enable_state_on_start != 0xff) {
if (uniwill_kbd_bl_type_rgb_single_color)
@ -652,6 +763,10 @@ static int uniwill_keyboard_remove(struct platform_device *dev)
del_timer(&uw_kbd_bl_init_timer);
for (i = 0; i < 3; ++i) {
led_classdev_unregister(&lightbar_led_classdevs[i]);
}
return 0;
}