3  *  fan_core.c - ACPI Fan core Driver
20 #include "fan.h"
33 	struct acpi_fan *fan = acpi_driver_data(device);  in fan_get_max_state()  local
35 	if (fan->acpi4) {  in fan_get_max_state()
36 		if (fan->fif.fine_grain_ctrl)  in fan_get_max_state()
37 			*state = 100 / fan->fif.step_size;  in fan_get_max_state()
39 			*state = fan->fps_count - 1;  in fan_get_max_state()
85 	struct acpi_fan *fan = acpi_driver_data(device);  in fan_get_state_acpi4()  local
93 	if (fan->fif.fine_grain_ctrl) {  in fan_get_state_acpi4()
100 		*state = (int) fst.control / fan->fif.step_size;  in fan_get_state_acpi4()
105 	for (i = 0; i < fan->fps_count; i++) {  in fan_get_state_acpi4()
106 		if (fst.control == fan->fps[i].control)  in fan_get_state_acpi4()
109 	if (i == fan->fps_count) {  in fan_get_state_acpi4()
138 	struct acpi_fan *fan = acpi_driver_data(device);  in fan_get_cur_state()  local
140 	if (fan->acpi4)  in fan_get_cur_state()
157 	struct acpi_fan *fan = acpi_driver_data(device);  in fan_set_state_acpi4()  local
162 	if (fan->fif.fine_grain_ctrl)  in fan_set_state_acpi4()
163 		max_state = 100 / fan->fif.step_size;  in fan_set_state_acpi4()
165 		max_state = fan->fps_count - 1;  in fan_set_state_acpi4()
170 	if (fan->fif.fine_grain_ctrl) {  in fan_set_state_acpi4()
171 		value *= fan->fif.step_size;  in fan_set_state_acpi4()
173 		if (value + fan->fif.step_size > 100)  in fan_set_state_acpi4()
176 		value = fan->fps[state].control;  in fan_set_state_acpi4()
192 	struct acpi_fan *fan = acpi_driver_data(device);  in fan_set_cur_state()  local
194 	if (fan->acpi4)  in fan_set_cur_state()
214 	struct acpi_fan *fan = acpi_driver_data(device);  in acpi_fan_get_fif()  local
239 	fan->fif.revision = fields[0];  in acpi_fan_get_fif()
240 	fan->fif.fine_grain_ctrl = fields[1];  in acpi_fan_get_fif()
241 	fan->fif.step_size = fields[2];  in acpi_fan_get_fif()
242 	fan->fif.low_speed_notification = fields[3];  in acpi_fan_get_fif()
245 	if (!fan->fif.step_size)  in acpi_fan_get_fif()
246 		fan->fif.step_size = 1;  in acpi_fan_get_fif()
248 	else if (fan->fif.step_size > 9)  in acpi_fan_get_fif()
249 		fan->fif.step_size = 9;  in acpi_fan_get_fif()
264 	struct acpi_fan *fan = acpi_driver_data(device);  in acpi_fan_get_fps()  local
281 	fan->fps_count = obj->package.count - 1; /* minus revision field */  in acpi_fan_get_fps()
282 	fan->fps = devm_kcalloc(&device->dev,  in acpi_fan_get_fps()
283 				fan->fps_count, sizeof(struct acpi_fan_fps),  in acpi_fan_get_fps()
285 	if (!fan->fps) {  in acpi_fan_get_fps()
290 	for (i = 0; i < fan->fps_count; i++) {  in acpi_fan_get_fps()
293 						&fan->fps[i] };  in acpi_fan_get_fps()
302 	/* sort the state array according to fan speed in increase order */  in acpi_fan_get_fps()
303 	sort(fan->fps, fan->fps_count, sizeof(*fan->fps),  in acpi_fan_get_fps()
315 	struct acpi_fan *fan;  in acpi_fan_probe()  local
322 	fan = devm_kzalloc(&pdev->dev, sizeof(*fan), GFP_KERNEL);  in acpi_fan_probe()
323 	if (!fan) {  in acpi_fan_probe()
324 		dev_err(&device->dev, "No memory for fan\n");  in acpi_fan_probe()
328 	fan->handle = device->handle;  in acpi_fan_probe()
329 	device->driver_data = fan;  in acpi_fan_probe()
330 	platform_set_drvdata(pdev, fan);  in acpi_fan_probe()
333 		fan->has_fst = true;  in acpi_fan_probe()
334 		fan->acpi4 = acpi_has_method(device->handle, "_FIF") &&  in acpi_fan_probe()
339 	if (fan->acpi4) {  in acpi_fan_probe()
349 	if (fan->has_fst) {  in acpi_fan_probe()
359 	if (!fan->acpi4) {  in acpi_fan_probe()
368 		name = "Fan";  in acpi_fan_probe()
381 	fan->cdev = cdev;  in acpi_fan_probe()
405 	if (fan->has_fst)  in acpi_fan_probe()
413 	struct acpi_fan *fan = platform_get_drvdata(pdev);  in acpi_fan_remove()  local
415 	if (fan->has_fst) {  in acpi_fan_remove()
421 	sysfs_remove_link(&fan->cdev->device.kobj, "device");  in acpi_fan_remove()
422 	thermal_cooling_device_unregister(fan->cdev);  in acpi_fan_remove()
428 	struct acpi_fan *fan = dev_get_drvdata(dev);  in acpi_fan_suspend()  local
429 	if (fan->acpi4)  in acpi_fan_suspend()
440 	struct acpi_fan *fan = dev_get_drvdata(dev);  in acpi_fan_resume()  local
442 	if (fan->acpi4)  in acpi_fan_resume()
447 		dev_err(dev, "Error updating fan power state\n");  in acpi_fan_resume()
470 		.name = "acpi-fan",
479 MODULE_DESCRIPTION("ACPI Fan Driver");