A few models offer the chance to set whether to resume from S3 and/or S4
when opening the lid, this patch add a control file for this feature.
Signed-off-by: Marco Chiappero <marco@xxxxxxxxxx>
---
--- a/drivers/platform/x86/sony-laptop.c
+++ b/drivers/platform/x86/sony-laptop.c
@@ -2270,6 +2270,78 @@ static void sony_nc_thermal_resume(void)
sony_nc_thermal_mode_set(th_handle->mode);
}
+static struct device_attribute *lid_handle;
+
+static ssize_t sony_nc_lid_resume_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 (strict_strtoul(buffer, 10, &value) || value > 3)
+ return -EINVAL;
+
+ /* 00 <- disabled
+ 01 <- resume from S4
+ 10 <- resume from S3
+ 11 <- resume from S4 and S3
+ */
+ /* we must set bit 1 and 2 (bit 0 is for S5), so shift one bit more */
+ if (sony_call_snc_handle(0x0119, value << 0x11 | 0x0100, &result))
+ return -EIO;
+
+ return count;
+}
+
+static ssize_t sony_nc_lid_resume_show(struct device *dev,
+ struct device_attribute *attr, char *buffer)
+{
+ ssize_t count = 0;
+ unsigned int result;
+
+ if (sony_call_snc_handle(0x0119, 0x0000, &result))
+ return -EIO;
+
+ count = snprintf(buffer, PAGE_SIZE, "%d\n", (result >> 1) & 0x03);
+
+ return count;
+}
+
+static int sony_nc_lid_resume_setup(struct platform_device *pd)
+{
+ lid_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
+ if (!lid_handle)
+ return -ENOMEM;
+
+ sysfs_attr_init(&lid_handle->attr);
+ lid_handle->attr.name = "lid_resume_control";
+ lid_handle->attr.mode = S_IRUGO | S_IWUSR;
+ lid_handle->show = sony_nc_lid_resume_show;
+ lid_handle->store = sony_nc_lid_resume_store;
+
+ if (device_create_file(&pd->dev, lid_handle)) {
+ kfree(lid_handle);
+ lid_handle = NULL;
+ return -1;
+ }
+
+ return 0;
+}
+
+static int sony_nc_lid_resume_cleanup(struct platform_device *pd)
+{
+ if (lid_handle) {
+ device_remove_file(&pd->dev, lid_handle);
+ kfree(lid_handle);
+ lid_handle = NULL;
+ }
+
+ return 0;
+}
+
static void sony_nc_backlight_ng_read_limits(int handle,
struct sony_backlight_props *props)
@@ -2412,6 +2484,9 @@ static void sony_nc_snc_setup_handles(st
sony_bc_handle = handle;
ret = sony_nc_battery_care_setup(pd);
break;
+ case 0x0119:
+ ret = sony_nc_lid_resume_setup(pd);
+ break;
case 0x0122:
ret = sony_nc_thermal_setup(pd);
break;
@@ -2462,6 +2537,9 @@ static void sony_nc_snc_cleanup_handles(
case 0x013f:
sony_nc_battery_care_cleanup(pd);
break;
+ case 0x0119:
+ sony_nc_lid_resume_cleanup(pd);
+ break;
case 0x0122:
sony_nc_thermal_cleanup(pd);
break;
--
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