From: Marco Chiappero <marco@xxxxxxxxxx>
[malattia@xxxxxxxx: support string based profiles names]
Signed-off-by: Marco Chiappero <marco@xxxxxxxxxx>
Signed-off-by: Mattia Dongili <malattia@xxxxxxxx>
---
drivers/platform/x86/sony-laptop.c | 183 ++++++++++++++++++++++++++++++++++++
1 file changed, 183 insertions(+)
diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c
index 0ac186e9..c3f54ad 100644
--- a/drivers/platform/x86/sony-laptop.c
+++ b/drivers/platform/x86/sony-laptop.c
@@ -148,6 +148,10 @@ static int sony_nc_battery_care_setup(struct platform_device *pd,
unsigned int handle);
static void sony_nc_battery_care_cleanup(struct platform_device *pd);
+static int sony_nc_thermal_setup(struct platform_device *pd);
+static void sony_nc_thermal_cleanup(struct platform_device *pd);
+static void sony_nc_thermal_resume(void);
+
enum sony_nc_rfkill {
SONY_WIFI,
SONY_BLUETOOTH,
@@ -1282,6 +1286,12 @@ static void sony_nc_function_setup(struct acpi_device *device,
pr_err("couldn't set up battery care function (%d)\n",
result);
break;
+ case 0x0122:
+ result = sony_nc_thermal_setup(pf_device);
+ if (result)
+ pr_err("couldn't set up thermal profile function (%d)\n",
+ result);
+ break;
case 0x0124:
case 0x0135:
sony_nc_rfkill_setup(device);
@@ -1323,6 +1333,9 @@ static void sony_nc_function_cleanup(struct platform_device *pd)
case 0x013f:
sony_nc_battery_care_cleanup(pd);
break;
+ case 0x0122:
+ sony_nc_thermal_cleanup(pd);
+ break;
case 0x0124:
case 0x0135:
sony_nc_rfkill_cleanup();
@@ -1362,6 +1375,9 @@ static void sony_nc_function_resume(void)
/* re-enable hotkeys */
sony_call_snc_handle(handle, 0x100, &result);
break;
+ case 0x0122:
+ sony_nc_thermal_resume();
+ break;
case 0x0124:
case 0x0135:
sony_nc_rfkill_update();
@@ -1923,6 +1939,173 @@ static void sony_nc_battery_care_cleanup(struct platform_device *pd)
}
}
+struct snc_thermal_ctrl {
+ unsigned int mode;
+ unsigned int profiles;
+ struct device_attribute mode_attr;
+ struct device_attribute profiles_attr;
+};
+static struct snc_thermal_ctrl *th_handle;
+
+#define THM_PROFILE_MAX 3
+static const char * const snc_thermal_profiles[] = {
+ "balanced",
+ "silent",
+ "performance"
+};
+
+static int sony_nc_thermal_mode_set(unsigned short mode)
+{
+ unsigned int result;
+
+ /* the thermal profile seems to be a two bit bitmask:
+ * lsb -> silent
+ * msb -> performance
+ * no bit set is the normal operation and is always valid
+ * Some vaio models only have "balanced" and "performance"
+ */
+ if ((mode && !(th_handle->profiles & mode)) || mode >= THM_PROFILE_MAX)
+ return -EINVAL;
+
+ if (sony_call_snc_handle(0x0122, mode << 0x10 | 0x0200, &result))
+ return -EIO;
+
+ th_handle->mode = mode;
+
+ return 0;
+}
+
+static int sony_nc_thermal_mode_get(void)
+{
+ unsigned int result;
+
+ if (sony_call_snc_handle(0x0122, 0x0100, &result))
+ return -EIO;
+
+ return result & 0xff;
+}
+
+static ssize_t sony_nc_thermal_profiles_show(struct device *dev,
+ struct device_attribute *attr, char *buffer)
+{
+ short cnt;
+ size_t idx = 0;
+
+ for (cnt = 0; cnt < THM_PROFILE_MAX; cnt++) {
+ if (!cnt || (th_handle->profiles & cnt))
+ idx += snprintf(buffer + idx, PAGE_SIZE - idx, "%s ",
+ snc_thermal_profiles[cnt]);
+ }
+ idx += snprintf(buffer + idx, PAGE_SIZE - idx, "\n");
+
+ return idx;
+}
+
+static ssize_t sony_nc_thermal_mode_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buffer, size_t count)
+{
+ unsigned short cmd;
+ size_t len = count;
+
+ if (count == 0)
+ return -EINVAL;
+
+ /* skip the newline if present */
+ if (buffer[len - 1] == '\n')
+ len--;
+
+ for (cmd = 0; cmd < THM_PROFILE_MAX; cmd++)
+ if (strncmp(buffer, snc_thermal_profiles[cmd], len) == 0)
+ break;
+
+ if (sony_nc_thermal_mode_set(cmd))
+ return -EIO;
+
+ return count;
+}
+
+static ssize_t sony_nc_thermal_mode_show(struct device *dev,
+ struct device_attribute *attr, char *buffer)
+{
+ ssize_t count = 0;
+ unsigned int mode = sony_nc_thermal_mode_get();
+
+ if (mode < 0)
+ return mode;
+
+ count = snprintf(buffer, PAGE_SIZE, "%s\n", snc_thermal_profiles[mode]);
+
+ return count;
+}
+
+static int sony_nc_thermal_setup(struct platform_device *pd)
+{
+ int ret = 0;
+ th_handle = kzalloc(sizeof(struct snc_thermal_ctrl), GFP_KERNEL);
+ if (!th_handle)
+ return -ENOMEM;
+
+ ret = sony_call_snc_handle(0x0122, 0x0000, &th_handle->profiles);
+ if (ret) {
+ pr_warn("couldn't to read the thermal profiles\n");
+ goto outkzalloc;
+ }
+
+ ret = sony_nc_thermal_mode_get();
+ if (ret < 0) {
+ pr_warn("couldn't to read the current thermal profile");
+ goto outkzalloc;
+ }
+ th_handle->mode = ret;
+
+ sysfs_attr_init(&th_handle->profiles_attr.attr);
+ th_handle->profiles_attr.attr.name = "thermal_profiles";
+ th_handle->profiles_attr.attr.mode = S_IRUGO;
+ th_handle->profiles_attr.show = sony_nc_thermal_profiles_show;
+
+ sysfs_attr_init(&th_handle->mode_attr.attr);
+ th_handle->mode_attr.attr.name = "thermal_control";
+ th_handle->mode_attr.attr.mode = S_IRUGO | S_IWUSR;
+ th_handle->mode_attr.show = sony_nc_thermal_mode_show;
+ th_handle->mode_attr.store = sony_nc_thermal_mode_store;
+
+ ret = device_create_file(&pd->dev, &th_handle->profiles_attr);
+ if (ret)
+ goto outkzalloc;
+
+ ret = device_create_file(&pd->dev, &th_handle->mode_attr);
+ if (ret)
+ goto outprofiles;
+
+ return 0;
+
+outprofiles:
+ device_remove_file(&pd->dev, &th_handle->profiles_attr);
+outkzalloc:
+ kfree(th_handle);
+ th_handle = NULL;
+ return ret;
+}
+
+static void sony_nc_thermal_cleanup(struct platform_device *pd)
+{
+ if (th_handle) {
+ device_remove_file(&pd->dev, &th_handle->profiles_attr);
+ device_remove_file(&pd->dev, &th_handle->mode_attr);
+ kfree(th_handle);
+ th_handle = NULL;
+ }
+}
+
+static void sony_nc_thermal_resume(void)
+{
+ unsigned int status = sony_nc_thermal_mode_get();
+
+ if (status != th_handle->mode)
+ sony_nc_thermal_mode_set(th_handle->mode);
+}
+
static void sony_nc_backlight_ng_read_limits(int handle,
struct sony_backlight_props *props)
{
--
1.7.10
--
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