77 	struct tpm_chip *chip;  member
103 static void st33zp24_cancel(struct tpm_chip *chip)  in st33zp24_cancel()  argument
108 	tpm_dev = (struct st33zp24_dev *)TPM_VPRIV(chip);  in st33zp24_cancel()
119 static u8 st33zp24_status(struct tpm_chip *chip)  in st33zp24_status()  argument
124 	tpm_dev = (struct st33zp24_dev *)TPM_VPRIV(chip);  in st33zp24_status()
135 static int check_locality(struct tpm_chip *chip)  in check_locality()  argument
141 	tpm_dev = (struct st33zp24_dev *)TPM_VPRIV(chip);  in check_locality()
147 		return chip->vendor.locality;  in check_locality()
157 static int request_locality(struct tpm_chip *chip)  in request_locality()  argument
164 	if (check_locality(chip) == chip->vendor.locality)  in request_locality()
165 		return chip->vendor.locality;  in request_locality()
167 	tpm_dev = (struct st33zp24_dev *)TPM_VPRIV(chip);  in request_locality()
174 	stop = jiffies + chip->vendor.timeout_a;  in request_locality()
178 		if (check_locality(chip) >= 0)  in request_locality()
179 			return chip->vendor.locality;  in request_locality()
191 static void release_locality(struct tpm_chip *chip)  in release_locality()  argument
196 	tpm_dev = (struct st33zp24_dev *)TPM_VPRIV(chip);  in release_locality()
207 static int get_burstcount(struct tpm_chip *chip)  in get_burstcount()  argument
214 	tpm_dev = (struct st33zp24_dev *)TPM_VPRIV(chip);  in get_burstcount()
216 	stop = jiffies + chip->vendor.timeout_d;  in get_burstcount()
247 static bool wait_for_tpm_stat_cond(struct tpm_chip *chip, u8 mask,  in wait_for_tpm_stat_cond()  argument
250 	u8 status = chip->ops->status(chip);  in wait_for_tpm_stat_cond()
255 	if (check_cancel && chip->ops->req_canceled(chip, status)) {  in wait_for_tpm_stat_cond()
271 static int wait_for_stat(struct tpm_chip *chip, u8 mask, unsigned long timeout,  in wait_for_stat()  argument
282 	tpm_dev = (struct st33zp24_dev *)TPM_VPRIV(chip);  in wait_for_stat()
285 	status = st33zp24_status(chip);  in wait_for_stat()
291 	if (chip->vendor.irq) {  in wait_for_stat()
294 		enable_irq(chip->vendor.irq);  in wait_for_stat()
308 			condition = wait_for_tpm_stat_cond(chip, mask,  in wait_for_stat()
317 		disable_irq_nosync(chip->vendor.irq);  in wait_for_stat()
322 			status = chip->ops->status(chip);  in wait_for_stat()
338 static int recv_data(struct tpm_chip *chip, u8 *buf, size_t count)  in recv_data()  argument
343 	tpm_dev = (struct st33zp24_dev *)TPM_VPRIV(chip);  in recv_data()
346 	       wait_for_stat(chip,  in recv_data()
348 			     chip->vendor.timeout_c,  in recv_data()
349 			     &chip->vendor.read_queue, true) == 0) {  in recv_data()
350 		burstcnt = get_burstcount(chip);  in recv_data()
372 	struct tpm_chip *chip = dev_id;  in tpm_ioserirq_handler()  local
375 	tpm_dev = (struct st33zp24_dev *)TPM_VPRIV(chip);  in tpm_ioserirq_handler()
378 	wake_up_interruptible(&chip->vendor.read_queue);  in tpm_ioserirq_handler()
379 	disable_irq_nosync(chip->vendor.irq);  in tpm_ioserirq_handler()
393 static int st33zp24_send(struct tpm_chip *chip, unsigned char *buf,  in st33zp24_send()  argument
402 	if (!chip)  in st33zp24_send()
407 	tpm_dev = (struct st33zp24_dev *)TPM_VPRIV(chip);  in st33zp24_send()
409 	ret = request_locality(chip);  in st33zp24_send()
413 	status = st33zp24_status(chip);  in st33zp24_send()
415 		st33zp24_cancel(chip);  in st33zp24_send()
417 		    (chip, TPM_STS_COMMAND_READY, chip->vendor.timeout_b,  in st33zp24_send()
418 		     &chip->vendor.read_queue, false) < 0) {  in st33zp24_send()
425 		burstcnt = get_burstcount(chip);  in st33zp24_send()
437 	status = st33zp24_status(chip);  in st33zp24_send()
448 	status = st33zp24_status(chip);  in st33zp24_send()
459 	if (chip->vendor.irq) {  in st33zp24_send()
462 		ret = wait_for_stat(chip, TPM_STS_DATA_AVAIL | TPM_STS_VALID,  in st33zp24_send()
463 				tpm_calc_ordinal_duration(chip, ordinal),  in st33zp24_send()
464 				&chip->vendor.read_queue, false);  in st33zp24_send()
471 	st33zp24_cancel(chip);  in st33zp24_send()
472 	release_locality(chip);  in st33zp24_send()
484 static int st33zp24_recv(struct tpm_chip *chip, unsigned char *buf,  in st33zp24_recv()  argument
490 	if (!chip)  in st33zp24_recv()
498 	size = recv_data(chip, buf, TPM_HEADER_SIZE);  in st33zp24_recv()
500 		dev_err(&chip->dev, "Unable to read header\n");  in st33zp24_recv()
510 	size += recv_data(chip, &buf[TPM_HEADER_SIZE],  in st33zp24_recv()
513 		dev_err(&chip->dev, "Unable to read remainder of result\n");  in st33zp24_recv()
518 	st33zp24_cancel(chip);  in st33zp24_recv()
519 	release_locality(chip);  in st33zp24_recv()
529 static bool st33zp24_req_canceled(struct tpm_chip *chip, u8 status)  in st33zp24_req_canceled()  argument
556 	struct tpm_chip *chip;  in st33zp24_probe()  local
559 	chip = tpmm_chip_alloc(dev, &st33zp24_tpm);  in st33zp24_probe()
560 	if (IS_ERR(chip))  in st33zp24_probe()
561 		return PTR_ERR(chip);  in st33zp24_probe()
568 	TPM_VPRIV(chip) = tpm_dev;  in st33zp24_probe()
572 	chip->vendor.timeout_a = msecs_to_jiffies(TIS_SHORT_TIMEOUT);  in st33zp24_probe()
573 	chip->vendor.timeout_b = msecs_to_jiffies(TIS_LONG_TIMEOUT);  in st33zp24_probe()
574 	chip->vendor.timeout_c = msecs_to_jiffies(TIS_SHORT_TIMEOUT);  in st33zp24_probe()
575 	chip->vendor.timeout_d = msecs_to_jiffies(TIS_SHORT_TIMEOUT);  in st33zp24_probe()
577 	chip->vendor.locality = LOCALITY0;  in st33zp24_probe()
581 		init_waitqueue_head(&chip->vendor.read_queue);  in st33zp24_probe()
584 		if (request_locality(chip) != LOCALITY0) {  in st33zp24_probe()
592 				chip);  in st33zp24_probe()
594 			dev_err(&chip->dev, "TPM SERIRQ signals %d not available\n",  in st33zp24_probe()
614 		chip->vendor.irq = irq;  in st33zp24_probe()
616 		disable_irq_nosync(chip->vendor.irq);  in st33zp24_probe()
618 		tpm_gen_interrupt(chip);  in st33zp24_probe()
621 	tpm_get_timeouts(chip);  in st33zp24_probe()
622 	tpm_do_selftest(chip);  in st33zp24_probe()
624 	return tpm_chip_register(chip);  in st33zp24_probe()
626 	dev_info(&chip->dev, "TPM initialization fail\n");  in st33zp24_probe()
636 int st33zp24_remove(struct tpm_chip *chip)  in st33zp24_remove()  argument
638 	tpm_chip_unregister(chip);  in st33zp24_remove()
652 	struct tpm_chip *chip = dev_get_drvdata(dev);  in st33zp24_pm_suspend()  local
656 	tpm_dev = (struct st33zp24_dev *)TPM_VPRIV(chip);  in st33zp24_pm_suspend()
674 	struct tpm_chip *chip = dev_get_drvdata(dev);  in st33zp24_pm_resume()  local
678 	tpm_dev = (struct st33zp24_dev *)TPM_VPRIV(chip);  in st33zp24_pm_resume()
682 		ret = wait_for_stat(chip,  in st33zp24_pm_resume()
683 				TPM_STS_VALID, chip->vendor.timeout_b,  in st33zp24_pm_resume()
684 				&chip->vendor.read_queue, false);  in st33zp24_pm_resume()
688 			tpm_do_selftest(chip);  in st33zp24_pm_resume()