5  * Based on Infineon TPM driver by Peter Huewe.
33 #define TPM_CR50_TIMEOUT_NOIRQ_MS	20		/* Timeout for TPM ready without IRQ */
65  * @tpm_info:	TPM chip information.
85  * tpm_cr50_i2c_wait_tpm_ready() - Wait for tpm to signal ready.
86  * @chip: A TPM chip.
89  * delay for the TPM to be ready.
105 	/* Wait for interrupt to indicate TPM is ready to respond */  in tpm_cr50_i2c_wait_tpm_ready()
107 		dev_warn(&chip->dev, "Timeout waiting for TPM ready\n");  in tpm_cr50_i2c_wait_tpm_ready()
115  * tpm_cr50_i2c_enable_tpm_irq() - Enable TPM irq.
116  * @chip: A TPM chip.
129  * tpm_cr50_i2c_disable_tpm_irq() - Disable TPM irq.
130  * @chip: A TPM chip.
175  * tpm_cr50_i2c_read() - Read from TPM register.
176  * @chip:	A TPM chip.
181  * Sends the register address byte to the TPM, then waits until TPM
183  * bytes are read from TPM response into the provided 'buffer'.
208 	/* Send the register address byte to the TPM */  in tpm_cr50_i2c_read()
213 	/* Wait for TPM to be ready with response data */  in tpm_cr50_i2c_read()
218 	/* Read response data from the TPM */  in tpm_cr50_i2c_read()
231  * tpm_cr50_i2c_write()- Write to TPM register.
232  * @chip:	A TPM chip.
238  * combined address+data is sent to the TPM, then wait for TPM to
272 	/* Wait for TPM to be ready, ignore timeout */  in tpm_cr50_i2c_write()
285  * tpm_cr50_check_locality() - Verify if required TPM locality is active.
286  * @chip: A TPM chip.
310  * tpm_cr50_release_locality() - Release TPM locality.
311  * @chip:	A TPM chip.
341  * tpm_cr50_request_locality() - Request TPM locality.
342  * @chip: A TPM chip.
382  * @chip: A TPM chip.
387  *	TPM status byte.
401  * @chip: A TPM chip.
415  * @chip:	A TPM chip.
459  * tpm_cr50_i2c_tis_recv() - TPM reception callback.
460  * @chip:	A TPM chip.
525 	/* Ensure TPM is done reading data */  in tpm_cr50_i2c_tis_recv()
546  * tpm_cr50_i2c_tis_send() - TPM transmission callback.
547  * @chip:	A TPM chip.
563 	/* Wait until TPM is ready for a command */  in tpm_cr50_i2c_tis_send()
602 	/* Ensure TPM is not expecting more data */  in tpm_cr50_i2c_tis_send()
612 	/* Start the TPM command */  in tpm_cr50_i2c_tis_send()
631  * @chip:	A TPM chip.
734 	/* cr50 is a TPM 2.0 chip */  in tpm_cr50_i2c_probe()
760 		dev_warn(dev, "No IRQ, will use %ums delay for TPM ready\n",  in tpm_cr50_i2c_probe()
793 	dev_info(dev, "%s TPM 2.0 (i2c 0x%02x irq %d id 0x%x)\n",  in tpm_cr50_i2c_probe()
835 MODULE_DESCRIPTION("cr50 TPM I2C Driver");