46 static int st33zp24_i2c_write8_reg(struct udevice *dev, u8 tpm_register,  in st33zp24_i2c_write8_reg()  argument
49 	struct tpm_chip_priv *chip_priv = dev_get_uclass_priv(dev);  in st33zp24_i2c_write8_reg()
54 	return dm_i2c_write(dev, 0, chip_priv->buf, tpm_size + 1);  in st33zp24_i2c_write8_reg()
65 static int st33zp24_i2c_read8_reg(struct udevice *dev, u8 tpm_register,  in st33zp24_i2c_read8_reg()  argument
72 	status = st33zp24_i2c_write8_reg(dev, tpm_register, &data, 1);  in st33zp24_i2c_read8_reg()
76 	return dm_i2c_read(dev, 0, tpm_data, tpm_size);  in st33zp24_i2c_read8_reg()
88 static int st33zp24_i2c_write(struct udevice *dev, u8 tpm_register,  in st33zp24_i2c_write()  argument
91 	return st33zp24_i2c_write8_reg(dev, tpm_register | TPM_WRITE_DIRECTION,  in st33zp24_i2c_write()
104 static int st33zp24_i2c_read(struct udevice *dev, u8 tpm_register,  in st33zp24_i2c_read()  argument
107 	return st33zp24_i2c_read8_reg(dev, tpm_register, tpm_data, tpm_size);  in st33zp24_i2c_read()
114 static void st33zp24_i2c_release_locality(struct udevice *dev)  in st33zp24_i2c_release_locality()  argument
118 	st33zp24_i2c_write(dev, TPM_ACCESS, &data, 1);  in st33zp24_i2c_release_locality()
126 static int st33zp24_i2c_check_locality(struct udevice *dev)  in st33zp24_i2c_check_locality()  argument
128 	struct tpm_chip *chip = dev_get_priv(dev);  in st33zp24_i2c_check_locality()
132 	status = st33zp24_i2c_read(dev, TPM_ACCESS, &data, 1);  in st33zp24_i2c_check_locality()
146 static int st33zp24_i2c_request_locality(struct udevice *dev)  in st33zp24_i2c_request_locality()  argument
148 	struct tpm_chip *chip = dev_get_priv(dev);  in st33zp24_i2c_request_locality()
153 	if (st33zp24_i2c_check_locality(dev) == chip->locality)  in st33zp24_i2c_request_locality()
157 	ret = st33zp24_i2c_write(dev, TPM_ACCESS, &data, 1);  in st33zp24_i2c_request_locality()
165 		if (st33zp24_i2c_check_locality(dev) >= 0)  in st33zp24_i2c_request_locality()
178 static u8 st33zp24_i2c_status(struct udevice *dev)  in st33zp24_i2c_status()  argument
182 	st33zp24_i2c_read(dev, TPM_STS, &data, 1);  in st33zp24_i2c_status()
192 static int st33zp24_i2c_get_burstcount(struct udevice *dev)  in st33zp24_i2c_get_burstcount()  argument
194 	struct tpm_chip *chip = dev_get_priv(dev);  in st33zp24_i2c_get_burstcount()
204 		status = st33zp24_i2c_read(dev, tpm_reg, &temp, 1);  in st33zp24_i2c_get_burstcount()
210 		status = st33zp24_i2c_read(dev, tpm_reg, &temp, 1);  in st33zp24_i2c_get_burstcount()
228 static void st33zp24_i2c_cancel(struct udevice *dev)  in st33zp24_i2c_cancel()  argument
233 	st33zp24_i2c_write(dev, TPM_STS, &data, 1);  in st33zp24_i2c_cancel()
244 static int st33zp24_i2c_wait_for_stat(struct udevice *dev, u8 mask,  in st33zp24_i2c_wait_for_stat()  argument
250 	*status = st33zp24_i2c_status(dev);  in st33zp24_i2c_wait_for_stat()
258 		*status = st33zp24_i2c_status(dev);  in st33zp24_i2c_wait_for_stat()
273 static int st33zp24_i2c_recv_data(struct udevice *dev, u8 *buf, size_t count)  in st33zp24_i2c_recv_data()  argument
275 	struct tpm_chip *chip = dev_get_priv(dev);  in st33zp24_i2c_recv_data()
279 	       st33zp24_i2c_wait_for_stat(dev, TPM_STS_DATA_AVAIL | TPM_STS_VALID,  in st33zp24_i2c_recv_data()
281 		burstcnt = st33zp24_i2c_get_burstcount(dev);  in st33zp24_i2c_recv_data()
285 		ret = st33zp24_i2c_read(dev, TPM_DATA_FIFO, buf + size, len);  in st33zp24_i2c_recv_data()
302 static int st33zp24_i2c_recv(struct udevice *dev, u8 *buf, size_t count)  in st33zp24_i2c_recv()  argument
304 	struct tpm_chip *chip = dev_get_priv(dev);  in st33zp24_i2c_recv()
316 	size = st33zp24_i2c_recv_data(dev, buf, TPM_HEADER_SIZE);  in st33zp24_i2c_recv()
328 	size += st33zp24_i2c_recv_data(dev, &buf[TPM_HEADER_SIZE],  in st33zp24_i2c_recv()
337 	st33zp24_i2c_cancel(dev);  in st33zp24_i2c_recv()
338 	st33zp24_i2c_release_locality(dev);  in st33zp24_i2c_recv()
350 static int st33zp24_i2c_send(struct udevice *dev, const u8 *buf, size_t len)  in st33zp24_i2c_send()  argument
352 	struct tpm_chip *chip = dev_get_priv(dev);  in st33zp24_i2c_send()
362 	ret = st33zp24_i2c_request_locality(dev);  in st33zp24_i2c_send()
366 	tpm_stat = st33zp24_i2c_status(dev);  in st33zp24_i2c_send()
368 		st33zp24_i2c_cancel(dev);  in st33zp24_i2c_send()
369 		if (st33zp24_i2c_wait_for_stat(dev, TPM_STS_COMMAND_READY,  in st33zp24_i2c_send()
377 		burstcnt = st33zp24_i2c_get_burstcount(dev);  in st33zp24_i2c_send()
382 		ret = st33zp24_i2c_write(dev, TPM_DATA_FIFO, buf + i, size);  in st33zp24_i2c_send()
389 	tpm_stat = st33zp24_i2c_status(dev);  in st33zp24_i2c_send()
395 	ret = st33zp24_i2c_write(dev, TPM_DATA_FIFO, buf + len - 1, 1);  in st33zp24_i2c_send()
399 	tpm_stat = st33zp24_i2c_status(dev);  in st33zp24_i2c_send()
406 	ret = st33zp24_i2c_write(dev, TPM_STS, &data, 1);  in st33zp24_i2c_send()
413 	st33zp24_i2c_cancel(dev);  in st33zp24_i2c_send()
414 	st33zp24_i2c_release_locality(dev);  in st33zp24_i2c_send()
419 static int st33zp24_i2c_cleanup(struct udevice *dev)  in st33zp24_i2c_cleanup()  argument
421 	st33zp24_i2c_cancel(dev);  in st33zp24_i2c_cleanup()
427 	st33zp24_i2c_release_locality(dev);  in st33zp24_i2c_cleanup()
432 static int st33zp24_i2c_init(struct udevice *dev)  in st33zp24_i2c_init()  argument
434 	struct tpm_chip *chip = dev_get_priv(dev);  in st33zp24_i2c_init()
454 static int st33zp24_i2c_open(struct udevice *dev)  in st33zp24_i2c_open()  argument
456 	struct tpm_chip *chip = dev_get_priv(dev);  in st33zp24_i2c_open()
463 	rc = st33zp24_i2c_init(dev);  in st33zp24_i2c_open()
470 static int st33zp24_i2c_close(struct udevice *dev)  in st33zp24_i2c_close()  argument
472 	struct tpm_chip *chip = dev_get_priv(dev);  in st33zp24_i2c_close()
475 		st33zp24_i2c_release_locality(dev);  in st33zp24_i2c_close()
483 static int st33zp24_i2c_get_desc(struct udevice *dev, char *buf, int size)  in st33zp24_i2c_get_desc()  argument
485 	struct tpm_chip *chip = dev_get_priv(dev);  in st33zp24_i2c_get_desc()
492 			dev->name,  in st33zp24_i2c_get_desc()
505 static int st33zp24_i2c_probe(struct udevice *dev)  in st33zp24_i2c_probe()  argument
507 	struct tpm_chip *chip = dev_get_priv(dev);  in st33zp24_i2c_probe()
517 	i2c_set_chip_offset_len(dev, 0);  in st33zp24_i2c_probe()
524 static int st33zp24_i2c_remove(struct udevice *dev)  in st33zp24_i2c_remove()  argument
526 	st33zp24_i2c_release_locality(dev);  in st33zp24_i2c_remove()