sony-laptop: add thermal profiles support
[malattia@linux.it: support string based profiles names] Signed-off-by: Marco Chiappero <marco@absence.it> Signed-off-by: Mattia Dongili <malattia@linux.it> Signed-off-by: Matthew Garrett <mjg@redhat.com>
This commit is contained in:
Marco Chiappero
Matthew Garrett
parent
967145a030
commit
49f000adca
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@ -148,6 +148,10 @@ static int sony_nc_battery_care_setup(struct platform_device *pd,
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unsigned int handle);
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static void sony_nc_battery_care_cleanup(struct platform_device *pd);
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static int sony_nc_thermal_setup(struct platform_device *pd);
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static void sony_nc_thermal_cleanup(struct platform_device *pd);
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static void sony_nc_thermal_resume(void);
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enum sony_nc_rfkill {
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SONY_WIFI,
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SONY_BLUETOOTH,
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@ -1282,6 +1286,12 @@ static void sony_nc_function_setup(struct acpi_device *device,
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pr_err("couldn't set up battery care function (%d)\n",
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result);
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break;
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case 0x0122:
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result = sony_nc_thermal_setup(pf_device);
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if (result)
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pr_err("couldn't set up thermal profile function (%d)\n",
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result);
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break;
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case 0x0124:
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case 0x0135:
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sony_nc_rfkill_setup(device);
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@ -1323,6 +1333,9 @@ static void sony_nc_function_cleanup(struct platform_device *pd)
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case 0x013f:
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sony_nc_battery_care_cleanup(pd);
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break;
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case 0x0122:
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sony_nc_thermal_cleanup(pd);
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break;
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case 0x0124:
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case 0x0135:
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sony_nc_rfkill_cleanup();
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@ -1362,6 +1375,9 @@ static void sony_nc_function_resume(void)
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/* re-enable hotkeys */
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sony_call_snc_handle(handle, 0x100, &result);
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break;
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case 0x0122:
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sony_nc_thermal_resume();
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break;
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case 0x0124:
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case 0x0135:
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sony_nc_rfkill_update();
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@ -1923,6 +1939,173 @@ static void sony_nc_battery_care_cleanup(struct platform_device *pd)
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}
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}
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struct snc_thermal_ctrl {
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unsigned int mode;
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unsigned int profiles;
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struct device_attribute mode_attr;
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struct device_attribute profiles_attr;
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};
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static struct snc_thermal_ctrl *th_handle;
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#define THM_PROFILE_MAX 3
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static const char * const snc_thermal_profiles[] = {
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"balanced",
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"silent",
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"performance"
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};
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static int sony_nc_thermal_mode_set(unsigned short mode)
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{
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unsigned int result;
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/* the thermal profile seems to be a two bit bitmask:
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* lsb -> silent
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* msb -> performance
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* no bit set is the normal operation and is always valid
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* Some vaio models only have "balanced" and "performance"
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*/
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if ((mode && !(th_handle->profiles & mode)) || mode >= THM_PROFILE_MAX)
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return -EINVAL;
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if (sony_call_snc_handle(0x0122, mode << 0x10 | 0x0200, &result))
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return -EIO;
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th_handle->mode = mode;
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return 0;
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}
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static int sony_nc_thermal_mode_get(void)
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{
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unsigned int result;
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if (sony_call_snc_handle(0x0122, 0x0100, &result))
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return -EIO;
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return result & 0xff;
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}
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static ssize_t sony_nc_thermal_profiles_show(struct device *dev,
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struct device_attribute *attr, char *buffer)
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{
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short cnt;
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size_t idx = 0;
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for (cnt = 0; cnt < THM_PROFILE_MAX; cnt++) {
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if (!cnt || (th_handle->profiles & cnt))
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idx += snprintf(buffer + idx, PAGE_SIZE - idx, "%s ",
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snc_thermal_profiles[cnt]);
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}
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idx += snprintf(buffer + idx, PAGE_SIZE - idx, "\n");
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return idx;
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}
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static ssize_t sony_nc_thermal_mode_store(struct device *dev,
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struct device_attribute *attr,
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const char *buffer, size_t count)
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{
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unsigned short cmd;
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size_t len = count;
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if (count == 0)
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return -EINVAL;
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/* skip the newline if present */
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if (buffer[len - 1] == '\n')
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len--;
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for (cmd = 0; cmd < THM_PROFILE_MAX; cmd++)
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if (strncmp(buffer, snc_thermal_profiles[cmd], len) == 0)
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break;
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if (sony_nc_thermal_mode_set(cmd))
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return -EIO;
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return count;
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}
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static ssize_t sony_nc_thermal_mode_show(struct device *dev,
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struct device_attribute *attr, char *buffer)
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{
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ssize_t count = 0;
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unsigned int mode = sony_nc_thermal_mode_get();
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if (mode < 0)
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return mode;
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count = snprintf(buffer, PAGE_SIZE, "%s\n", snc_thermal_profiles[mode]);
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return count;
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}
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static int sony_nc_thermal_setup(struct platform_device *pd)
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{
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int ret = 0;
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th_handle = kzalloc(sizeof(struct snc_thermal_ctrl), GFP_KERNEL);
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if (!th_handle)
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return -ENOMEM;
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ret = sony_call_snc_handle(0x0122, 0x0000, &th_handle->profiles);
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if (ret) {
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pr_warn("couldn't to read the thermal profiles\n");
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goto outkzalloc;
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}
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ret = sony_nc_thermal_mode_get();
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if (ret < 0) {
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pr_warn("couldn't to read the current thermal profile");
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goto outkzalloc;
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}
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th_handle->mode = ret;
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sysfs_attr_init(&th_handle->profiles_attr.attr);
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th_handle->profiles_attr.attr.name = "thermal_profiles";
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th_handle->profiles_attr.attr.mode = S_IRUGO;
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th_handle->profiles_attr.show = sony_nc_thermal_profiles_show;
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sysfs_attr_init(&th_handle->mode_attr.attr);
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th_handle->mode_attr.attr.name = "thermal_control";
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th_handle->mode_attr.attr.mode = S_IRUGO | S_IWUSR;
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th_handle->mode_attr.show = sony_nc_thermal_mode_show;
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th_handle->mode_attr.store = sony_nc_thermal_mode_store;
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ret = device_create_file(&pd->dev, &th_handle->profiles_attr);
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if (ret)
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goto outkzalloc;
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ret = device_create_file(&pd->dev, &th_handle->mode_attr);
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if (ret)
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goto outprofiles;
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return 0;
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outprofiles:
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device_remove_file(&pd->dev, &th_handle->profiles_attr);
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outkzalloc:
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kfree(th_handle);
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th_handle = NULL;
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return ret;
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}
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static void sony_nc_thermal_cleanup(struct platform_device *pd)
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{
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if (th_handle) {
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device_remove_file(&pd->dev, &th_handle->profiles_attr);
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device_remove_file(&pd->dev, &th_handle->mode_attr);
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kfree(th_handle);
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th_handle = NULL;
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}
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}
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static void sony_nc_thermal_resume(void)
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{
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unsigned int status = sony_nc_thermal_mode_get();
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if (status != th_handle->mode)
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sony_nc_thermal_mode_set(th_handle->mode);
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}
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static void sony_nc_backlight_ng_read_limits(int handle,
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struct sony_backlight_props *props)
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{
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