Commit e3a9afbb authored by Kenneth Chan's avatar Kenneth Chan Committed by Hans de Goede
Browse files

platform/x86: panasonic-laptop: Add write support to mute 



Add write support to the mute platform device

Signed-off-by: default avatarKenneth Chan <kenneth.t.chan@gmail.com>
Link: https://lore.kernel.org/r/20200821181433.17653-7-kenneth.t.chan@gmail.com


Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
parent 00856351

drivers/platform/x86/panasonic-laptop.c

+24 −1
Original line number Diff line number Diff line
@@ -13,6 +13,7 @@ 
 *

 * ChangeLog:

 *	Aug.18, 2020	Kenneth Chan <kenneth.t.chan@gmail.com>

 *			add write support to mute

 *			fix sticky_key init bug

 *			fix naming of platform files for consistency with other

 *			modules
@@ -220,6 +221,7 @@ struct pcc_acpi { 
	acpi_handle		handle;

	unsigned long		num_sifr;

	int			sticky_key;

	int			mute;

	u32			*sinf;

	struct acpi_device	*device;

	struct input_dev	*input_dev;
@@ -483,6 +485,24 @@ static ssize_t mute_show(struct device *dev, struct device_attribute *attr, 
	return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_MUTE]);

}



static ssize_t mute_store(struct device *dev, struct device_attribute *attr,

			  const char *buf, size_t count)

{

	struct acpi_device *acpi = to_acpi_device(dev);

	struct pcc_acpi *pcc = acpi_driver_data(acpi);

	int err, val;



	err = kstrtoint(buf, 0, &val);

	if (err)

		return err;

	if (val == 0 || val == 1) {

		acpi_pcc_write_sset(pcc, SINF_MUTE, val);

		pcc->mute = val;

	}



	return count;

}



static ssize_t sticky_key_show(struct device *dev, struct device_attribute *attr,

			   char *buf)

{
@@ -533,7 +553,7 @@ static ssize_t cdpower_store(struct device *dev, struct device_attribute *attr, 


static DEVICE_ATTR_RO(numbatt);

static DEVICE_ATTR_RO(lcdtype);

static DEVICE_ATTR_RO(mute);

static DEVICE_ATTR_RW(mute);

static DEVICE_ATTR_RW(sticky_key);

static DEVICE_ATTR_RW(cdpower);
@@ -690,6 +710,7 @@ static int acpi_pcc_hotkey_resume(struct device *dev) 
	if (!pcc)

		return -EINVAL;



	acpi_pcc_write_sset(pcc, SINF_MUTE, pcc->mute);

	acpi_pcc_write_sset(pcc, SINF_STICKY_KEY, pcc->sticky_key);



	return 0;
@@ -760,6 +781,8 @@ static int acpi_pcc_hotkey_add(struct acpi_device *device) 
	acpi_pcc_write_sset(pcc, SINF_STICKY_KEY, 0);

	pcc->sticky_key = 0;



	pcc->mute = pcc->sinf[SINF_MUTE];



	/* add sysfs attributes */

	result = sysfs_create_group(&device->dev.kobj, &pcc_attr_group);

	if (result)