From: Marco Chiappero <[email protected]>
Signed-off-by: Marco Chiappero <[email protected]>
Signed-off-by: Mattia Dongili <[email protected]>
---
drivers/platform/x86/sony-laptop.c | 86 ++++++++++++++++++++++++++++++++++++
1 file changed, 86 insertions(+)
diff --git a/drivers/platform/x86/sony-laptop.c
b/drivers/platform/x86/sony-laptop.c
index 4a4ecfa..f4dfdb0 100644
--- a/drivers/platform/x86/sony-laptop.c
+++ b/drivers/platform/x86/sony-laptop.c
@@ -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);
+
struct gsensor_control {
int handle;
unsigned int attrs_num;
@@ -1318,6 +1321,12 @@ 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 0x0134:
case 0x0147:
result = sony_nc_gsensor_setup(pf_device, handle);
@@ -1372,6 +1381,9 @@ 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 0x0134:
case 0x0147:
sony_nc_gsensor_cleanup(pd);
@@ -2623,6 +2635,80 @@ 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)
{
--
1.7.10
--
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