diff options
Diffstat (limited to 'drivers/platform/x86/panasonic-laptop.c')
| -rw-r--r-- | drivers/platform/x86/panasonic-laptop.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/drivers/platform/x86/panasonic-laptop.c b/drivers/platform/x86/panasonic-laptop.c index c77292588a8a..3b0294ee9d3e 100644 --- a/drivers/platform/x86/panasonic-laptop.c +++ b/drivers/platform/x86/panasonic-laptop.c @@ -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) |