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

Commit 2b8791c4 authored by Marco Chiappero's avatar Marco Chiappero Committed by Matthew Garrett
Browse files

sony-laptop: add touchpad enable/disable function 



This setting is stored in the EC and available across reboots.

[malattia@linux.it: group function specific variables in a struct, use
kstrtoul]

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 2e526311

drivers/platform/x86/sony-laptop.c

+91 −0
Original line number Original line Diff line number Diff line
@@ -159,6 +159,10 @@ static void sony_nc_lid_resume_cleanup(struct platform_device *pd); 
static int sony_nc_highspeed_charging_setup(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);

static void sony_nc_highspeed_charging_cleanup(struct platform_device *pd);





static int sony_nc_touchpad_setup(struct platform_device *pd,

				  unsigned int handle);

static void sony_nc_touchpad_cleanup(struct platform_device *pd);



enum sony_nc_rfkill {

enum sony_nc_rfkill {

	SONY_WIFI,

	SONY_WIFI,

	SONY_BLUETOOTH,

	SONY_BLUETOOTH,
@@ -1290,6 +1294,14 @@ static void sony_nc_function_setup(struct acpi_device *device, 
			/* setup hotkeys */

			/* setup hotkeys */

			sony_call_snc_handle(handle, 0x100, &result);

			sony_call_snc_handle(handle, 0x100, &result);

			break;

			break;

		case 0x0105:

		case 0x0148:

			/* touchpad enable/disable */

			result = sony_nc_touchpad_setup(pf_device, handle);

			if (result)

				pr_err("couldn't set up touchpad control function (%d)\n",

						result);

			break;

		case 0x0115:

		case 0x0115:

		case 0x0136:

		case 0x0136:

		case 0x013f:

		case 0x013f:
@@ -1359,6 +1371,10 @@ static void sony_nc_function_cleanup(struct platform_device *pd) 
			continue;

			continue;





		switch (handle) {

		switch (handle) {

		case 0x0105:

		case 0x0148:

			sony_nc_touchpad_cleanup(pd);

			break;

		case 0x0115:

		case 0x0115:

		case 0x0136:

		case 0x0136:

		case 0x013f:

		case 0x013f:
@@ -2376,6 +2392,81 @@ static void sony_nc_highspeed_charging_cleanup(struct platform_device *pd) 
	}

	}

}

}





/* Touchpad enable/disable */

struct touchpad_control {

	struct device_attribute attr;

	int handle;

};

static struct touchpad_control *tp_ctl;



static ssize_t sony_nc_touchpad_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;



	/* sysfs: 0 disabled, 1 enabled

	 * EC: 0 enabled, 1 disabled

	 */

	if (sony_call_snc_handle(tp_ctl->handle,

				(!value << 0x10) | 0x100, &result))

		return -EIO;



	return count;

}



static ssize_t sony_nc_touchpad_show(struct device *dev,

		struct device_attribute *attr, char *buffer)

{

	unsigned int result;



	if (sony_call_snc_handle(tp_ctl->handle, 0x000, &result))

		return -EINVAL;



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

}



static int sony_nc_touchpad_setup(struct platform_device *pd,

		unsigned int handle)

{

	int ret = 0;



	tp_ctl = kzalloc(sizeof(struct touchpad_control), GFP_KERNEL);

	if (!tp_ctl)

		return -ENOMEM;



	tp_ctl->handle = handle;



	sysfs_attr_init(&tp_ctl->attr.attr);

	tp_ctl->attr.attr.name = "touchpad";

	tp_ctl->attr.attr.mode = S_IRUGO | S_IWUSR;

	tp_ctl->attr.show = sony_nc_touchpad_show;

	tp_ctl->attr.store = sony_nc_touchpad_store;



	ret = device_create_file(&pd->dev, &tp_ctl->attr);

	if (ret) {

		kfree(tp_ctl);

		tp_ctl = NULL;

	}



	return ret;

}



static void sony_nc_touchpad_cleanup(struct platform_device *pd)

{

	if (tp_ctl) {

		device_remove_file(&pd->dev, &tp_ctl->attr);

		kfree(tp_ctl);

		tp_ctl = NULL;

	}

}



static void sony_nc_backlight_ng_read_limits(int handle,

static void sony_nc_backlight_ng_read_limits(int handle,

		struct sony_backlight_props *props)

		struct sony_backlight_props *props)

{

{