diff options
| -rw-r--r-- | drivers/platform/x86/sony-laptop.c | 183 |
1 files changed, 183 insertions, 0 deletions
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) { |
