5  * Based on Infineon TPM driver by Peter Huewe.
32 #define TPM_CR50_TIMEOUT_NOIRQ_MS	20		/* Timeout for TPM ready without IRQ */
62  * @tpm_info:	TPM chip information.
82  * tpm_cr50_i2c_wait_tpm_ready() - Wait for tpm to signal ready.
83  * @chip: A TPM chip.
86  * delay for the TPM to be ready.
102 	/* Wait for interrupt to indicate TPM is ready to respond */  in tpm_cr50_i2c_wait_tpm_ready()
104 		dev_warn(&chip->dev, "Timeout waiting for TPM ready\n");  in tpm_cr50_i2c_wait_tpm_ready()
112  * tpm_cr50_i2c_enable_tpm_irq() - Enable TPM irq.
113  * @chip: A TPM chip.
126  * tpm_cr50_i2c_disable_tpm_irq() - Disable TPM irq.
127  * @chip: A TPM chip.
172  * tpm_cr50_i2c_read() - Read from TPM register.
173  * @chip:	A TPM chip.
178  * Sends the register address byte to the TPM, then waits until TPM
180  * bytes are read from TPM response into the provided 'buffer'.
207 	/* Send the register address byte to the TPM */  in tpm_cr50_i2c_read()
212 	/* Wait for TPM to be ready with response data */  in tpm_cr50_i2c_read()
217 	/* 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
274 	/* Wait for TPM to be ready, ignore timeout */  in tpm_cr50_i2c_write()
288  * tpm_cr50_check_locality() - Verify TPM locality 0 is active.
289  * @chip: A TPM chip.
312  * tpm_cr50_release_locality() - Release TPM locality.
313  * @chip:	A TPM chip.
332  * tpm_cr50_request_locality() - Request TPM locality 0.
333  * @chip: A TPM chip.
365  * @chip: A TPM chip.
370  *	TPM status byte.
384  * @chip: A TPM chip.
398  * @chip:	A TPM chip.
442  * tpm_cr50_i2c_tis_recv() - TPM reception callback.
443  * @chip:	A TPM chip.
508 	/* Ensure TPM is done reading data */  in tpm_cr50_i2c_tis_recv()
531  * tpm_cr50_i2c_tis_send() - TPM transmission callback.
532  * @chip:	A TPM chip.
552 	/* Wait until TPM is ready for a command */  in tpm_cr50_i2c_tis_send()
590 	/* Ensure TPM is not expecting more data */  in tpm_cr50_i2c_tis_send()
600 	/* Start the TPM command */  in tpm_cr50_i2c_tis_send()
620  * @chip:	A TPM chip.
699 	/* cr50 is a TPM 2.0 chip */  in tpm_cr50_i2c_probe()
725 		dev_warn(dev, "No IRQ, will use %ums delay for TPM ready\n",  in tpm_cr50_i2c_probe()
750 	dev_info(dev, "%s TPM 2.0 (i2c 0x%02x irq %d id 0x%x)\n",  in tpm_cr50_i2c_probe()
793 MODULE_DESCRIPTION("cr50 TPM I2C Driver");