Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 88bf1706 authored by Marco Chiappero's avatar Marco Chiappero Committed by Matthew Garrett
Browse files

sony-laptop: add high speed battery charging function 



Signed-off-by: default avatarMarco Chiappero <marco@absence.it>
Signed-off-by: default avatarMattia Dongili <malattia@linux.it>
Signed-off-by: default avatarMatthew Garrett <mjg@redhat.com>
parent 54535d08

drivers/platform/x86/sony-laptop.c

+86 −0
Original line number Diff line number Diff line
@@ -155,6 +155,9 @@ static void sony_nc_thermal_resume(void); 
static int sony_nc_lid_resume_setup(struct platform_device *pd);

static void sony_nc_lid_resume_cleanup(struct platform_device *pd);



static int sony_nc_highspeed_charging_setup(struct platform_device *pd);

static void sony_nc_highspeed_charging_cleanup(struct platform_device *pd);



enum sony_nc_rfkill {

	SONY_WIFI,

	SONY_BLUETOOTH,
@@ -1301,6 +1304,12 @@ static void sony_nc_function_setup(struct acpi_device *device, 
				pr_err("couldn't set up thermal profile function (%d)\n",

						result);

			break;

		case 0x0131:

			result = sony_nc_highspeed_charging_setup(pf_device);

			if (result)

				pr_err("couldn't set up high speed charging function (%d)\n",

				       result);

			break;

		case 0x0124:

		case 0x0135:

			sony_nc_rfkill_setup(device);
@@ -1348,6 +1357,9 @@ static void sony_nc_function_cleanup(struct platform_device *pd) 
		case 0x0122:

			sony_nc_thermal_cleanup(pd);

			break;

		case 0x0131:

			sony_nc_highspeed_charging_cleanup(pd);

			break;

		case 0x0124:

		case 0x0135:

			sony_nc_rfkill_cleanup();
@@ -2246,6 +2258,80 @@ static void sony_nc_lid_resume_cleanup(struct platform_device *pd) 
	}

}



/* High speed charging function */

static struct device_attribute *hsc_handle;



static ssize_t sony_nc_highspeed_charging_store(struct device *dev,

		struct device_attribute *attr,

		const char *buffer, size_t count)

{

	unsigned int result;

	unsigned long value;



	if (count > 31)

		return -EINVAL;



	if (kstrtoul(buffer, 10, &value) || value > 1)

		return -EINVAL;



	if (sony_call_snc_handle(0x0131, value << 0x10 | 0x0200, &result))

		return -EIO;



	return count;

}



static ssize_t sony_nc_highspeed_charging_show(struct device *dev,

		struct device_attribute *attr, char *buffer)

{

	unsigned int result;



	if (sony_call_snc_handle(0x0131, 0x0100, &result))

		return -EIO;



	return snprintf(buffer, PAGE_SIZE, "%d\n", result & 0x01);

}



static int sony_nc_highspeed_charging_setup(struct platform_device *pd)

{

	unsigned int result;



	if (sony_call_snc_handle(0x0131, 0x0000, &result) || !(result & 0x01)) {

		/* some models advertise the handle but have no implementation

		 * for it

		 */

		pr_info("No High Speed Charging capability found\n");

		return 0;

	}



	hsc_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);

	if (!hsc_handle)

		return -ENOMEM;



	sysfs_attr_init(&hsc_handle->attr);

	hsc_handle->attr.name = "battery_highspeed_charging";

	hsc_handle->attr.mode = S_IRUGO | S_IWUSR;

	hsc_handle->show = sony_nc_highspeed_charging_show;

	hsc_handle->store = sony_nc_highspeed_charging_store;



	result = device_create_file(&pd->dev, hsc_handle);

	if (result) {

		kfree(hsc_handle);

		hsc_handle = NULL;

		return result;

	}



	return 0;

}



static void sony_nc_highspeed_charging_cleanup(struct platform_device *pd)

{

	if (hsc_handle) {

		device_remove_file(&pd->dev, hsc_handle);

		kfree(hsc_handle);

		hsc_handle = NULL;

	}

}



static void sony_nc_backlight_ng_read_limits(int handle,

		struct sony_backlight_props *props)

{