49  * 			add /proc/acpi/pcc/brightness interface for HAL access
154 #define ACPI_PCC_CLASS		"pcc"
232 static int acpi_pcc_write_sset(struct pcc_acpi *pcc, int func, int val)  in acpi_pcc_write_sset()  argument
246 	status = acpi_evaluate_object(pcc->handle, METHOD_HKEY_SSET,  in acpi_pcc_write_sset()
268 static int acpi_pcc_retrieve_biosdata(struct pcc_acpi *pcc)  in acpi_pcc_retrieve_biosdata()  argument
275 	status = acpi_evaluate_object(pcc->handle, METHOD_HKEY_SINF, NULL,  in acpi_pcc_retrieve_biosdata()
290 	if (pcc->num_sifr < hkey->package.count) {  in acpi_pcc_retrieve_biosdata()
300 			pcc->sinf[i] = element->integer.value;  in acpi_pcc_retrieve_biosdata()
305 	pcc->sinf[hkey->package.count] = -1;  in acpi_pcc_retrieve_biosdata()
321 	struct pcc_acpi *pcc = bl_get_data(bd);  in bl_get()  local
323 	if (!acpi_pcc_retrieve_biosdata(pcc))  in bl_get()
326 	return pcc->sinf[SINF_AC_CUR_BRIGHT];  in bl_get()
331 	struct pcc_acpi *pcc = bl_get_data(bd);  in bl_set_status()  local
335 	if (!acpi_pcc_retrieve_biosdata(pcc))  in bl_set_status()
338 	if (bright < pcc->sinf[SINF_AC_MIN_BRIGHT])  in bl_set_status()
339 		bright = pcc->sinf[SINF_AC_MIN_BRIGHT];  in bl_set_status()
341 	if (bright < pcc->sinf[SINF_DC_MIN_BRIGHT])  in bl_set_status()
342 		bright = pcc->sinf[SINF_DC_MIN_BRIGHT];  in bl_set_status()
344 	if (bright < pcc->sinf[SINF_AC_MIN_BRIGHT] ||  in bl_set_status()
345 	    bright > pcc->sinf[SINF_AC_MAX_BRIGHT])  in bl_set_status()
348 	rc = acpi_pcc_write_sset(pcc, SINF_AC_CUR_BRIGHT, bright);  in bl_set_status()
352 	return acpi_pcc_write_sset(pcc, SINF_DC_CUR_BRIGHT, bright);  in bl_set_status()
367 	struct pcc_acpi *pcc = acpi_driver_data(acpi);  in show_numbatt()  local
369 	if (!acpi_pcc_retrieve_biosdata(pcc))  in show_numbatt()
372 	return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_NUM_BATTERIES]);  in show_numbatt()
379 	struct pcc_acpi *pcc = acpi_driver_data(acpi);  in show_lcdtype()  local
381 	if (!acpi_pcc_retrieve_biosdata(pcc))  in show_lcdtype()
384 	return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_LCD_TYPE]);  in show_lcdtype()
391 	struct pcc_acpi *pcc = acpi_driver_data(acpi);  in show_mute()  local
393 	if (!acpi_pcc_retrieve_biosdata(pcc))  in show_mute()
396 	return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_MUTE]);  in show_mute()
403 	struct pcc_acpi *pcc = acpi_driver_data(acpi);  in show_sticky()  local
405 	if (!acpi_pcc_retrieve_biosdata(pcc))  in show_sticky()
408 	return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_STICKY_KEY]);  in show_sticky()
415 	struct pcc_acpi *pcc = acpi_driver_data(acpi);  in set_sticky()  local
420 		acpi_pcc_write_sset(pcc, SINF_STICKY_KEY, val);  in set_sticky()
421 		pcc->sticky_mode = val;  in set_sticky()
449 static void acpi_pcc_generate_keyinput(struct pcc_acpi *pcc)  in acpi_pcc_generate_keyinput()  argument
451 	struct input_dev *hotk_input_dev = pcc->input_dev;  in acpi_pcc_generate_keyinput()
455 	rc = acpi_evaluate_integer(pcc->handle, METHOD_HKEY_QUERY,  in acpi_pcc_generate_keyinput()
480 	struct pcc_acpi *pcc = acpi_driver_data(device);  in acpi_pcc_hotkey_notify()  local
484 		acpi_pcc_generate_keyinput(pcc);  in acpi_pcc_hotkey_notify()
492 static int acpi_pcc_init_input(struct pcc_acpi *pcc)  in acpi_pcc_init_input()  argument
522 	pcc->input_dev = input_dev;  in acpi_pcc_init_input()
535 	struct pcc_acpi *pcc;  in acpi_pcc_hotkey_resume()  local
540 	pcc = acpi_driver_data(to_acpi_device(dev));  in acpi_pcc_hotkey_resume()
541 	if (!pcc)  in acpi_pcc_hotkey_resume()
545 			  pcc->sticky_mode));  in acpi_pcc_hotkey_resume()
547 	return acpi_pcc_write_sset(pcc, SINF_STICKY_KEY, pcc->sticky_mode);  in acpi_pcc_hotkey_resume()
554 	struct pcc_acpi *pcc;  in acpi_pcc_hotkey_add()  local
567 	pcc = kzalloc(sizeof(struct pcc_acpi), GFP_KERNEL);  in acpi_pcc_hotkey_add()
568 	if (!pcc) {  in acpi_pcc_hotkey_add()
570 				  "Couldn't allocate mem for pcc"));  in acpi_pcc_hotkey_add()
574 	pcc->sinf = kcalloc(num_sifr + 1, sizeof(u32), GFP_KERNEL);  in acpi_pcc_hotkey_add()
575 	if (!pcc->sinf) {  in acpi_pcc_hotkey_add()
580 	pcc->device = device;  in acpi_pcc_hotkey_add()
581 	pcc->handle = device->handle;  in acpi_pcc_hotkey_add()
582 	pcc->num_sifr = num_sifr;  in acpi_pcc_hotkey_add()
583 	device->driver_data = pcc;  in acpi_pcc_hotkey_add()
587 	result = acpi_pcc_init_input(pcc);  in acpi_pcc_hotkey_add()
594 	if (!acpi_pcc_retrieve_biosdata(pcc)) {  in acpi_pcc_hotkey_add()
603 	props.max_brightness = pcc->sinf[SINF_AC_MAX_BRIGHT];  in acpi_pcc_hotkey_add()
604 	pcc->backlight = backlight_device_register("panasonic", NULL, pcc,  in acpi_pcc_hotkey_add()
606 	if (IS_ERR(pcc->backlight)) {  in acpi_pcc_hotkey_add()
607 		result = PTR_ERR(pcc->backlight);  in acpi_pcc_hotkey_add()
612 	pcc->backlight->props.brightness = pcc->sinf[SINF_AC_CUR_BRIGHT];  in acpi_pcc_hotkey_add()
615 	pcc->sticky_mode = pcc->sinf[SINF_STICKY_KEY];  in acpi_pcc_hotkey_add()
625 	backlight_device_unregister(pcc->backlight);  in acpi_pcc_hotkey_add()
627 	input_unregister_device(pcc->input_dev);  in acpi_pcc_hotkey_add()
629 	kfree(pcc->sinf);  in acpi_pcc_hotkey_add()
631 	kfree(pcc);  in acpi_pcc_hotkey_add()
638 	struct pcc_acpi *pcc = acpi_driver_data(device);  in acpi_pcc_hotkey_remove()  local
640 	if (!device || !pcc)  in acpi_pcc_hotkey_remove()
645 	backlight_device_unregister(pcc->backlight);  in acpi_pcc_hotkey_remove()
647 	input_unregister_device(pcc->input_dev);  in acpi_pcc_hotkey_remove()
649 	kfree(pcc->sinf);  in acpi_pcc_hotkey_remove()
650 	kfree(pcc);  in acpi_pcc_hotkey_remove()