drivers/tpm/tpm_tis_st33zp24_i2c.c

2  * STMicroelectronics TPM ST33ZP24 I2C UBOOT driver
6  * Description: Device driver for ST33ZP24 I2C TPM TCG.
8  * This device driver implements the TPM interface as defined in
9  * the TCG TPM Interface Spec version 1.21, revision 1.0 and the
19 #include <tpm.h>
41  * @param: tpm_register, the tpm tis register where the data should be written
60 * @param: tpm_register, the tpm tis register where the data should be read
61 * @param: tpm_data, the TPM response
62 * @param: tpm_size, tpm TPM response size to read.
83  * @param: tpm_register, the tpm tis register where the data should be written
99  * @param: tpm_register, the tpm tis register where the data should be read
100  * @param: tpm_data, the TPM response
101  * @param: tpm_size, tpm TPM response size to read.
112  * @param: chip, the tpm chip description.
123  * @param: chip, the tpm chip description
142  * st33zp24_i2c_request_locality request the TPM locality
175  * @param: chip, the tpm chip description
238  * @param: chip, the tpm chip description
242  * @return: the tpm status, 0 if success, -ETIME if timeout is reached.
268  * @param: chip, the tpm chip description
271  * @return: the number of bytes read from TPM FIFO.
296  * st33zp24_i2c_recv received TPM response through TPM phy.
317 		debug("TPM error, unable to read header\n");  in st33zp24_i2c_recv()
330 		debug("TPM error, unable to read remaining bytes of result\n");  in st33zp24_i2c_recv()
343  * st33zp24_i2c_send send TPM commands through TPM phy.
422 	 * The TPM needs some time to clean up here,  in st33zp24_i2c_cleanup()
446 	 * A timeout query to TPM can be placed here.  in st33zp24_i2c_init()
489 	return snprintf(buf, size, "1.2 TPM (%s, chip type %s device-id 0x%x)",  in st33zp24_i2c_get_desc()
518 	debug("ST33ZP24 I2C TPM from STMicroelectronics found\n");  in st33zp24_i2c_probe()