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3f80190937
Switch the driver from legacy gpio API (that uses flat GPIO numbering) to the newer gpiod API (which used descriptors and respects line polarities specified in ACPI or device tree). Because gpio handling code for SPI and I2C variants duplicates each other it is moved into the core code for the driver. Also, it seems that the driver never assigned tpm_dev->io_lpcpd in the past, so gpio-based power management was most likely not working ever. Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org> Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
42 lines
1.0 KiB
C
42 lines
1.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* STMicroelectronics TPM Linux driver for TPM ST33ZP24
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* Copyright (C) 2009 - 2016 STMicroelectronics
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*/
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#ifndef __LOCAL_ST33ZP24_H__
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#define __LOCAL_ST33ZP24_H__
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#define TPM_ST33_I2C "st33zp24-i2c"
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#define TPM_ST33_SPI "st33zp24-spi"
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#define TPM_WRITE_DIRECTION 0x80
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#define ST33ZP24_BUFSIZE 2048
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struct st33zp24_dev {
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struct tpm_chip *chip;
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void *phy_id;
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const struct st33zp24_phy_ops *ops;
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int locality;
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int irq;
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u32 intrs;
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struct gpio_desc *io_lpcpd;
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wait_queue_head_t read_queue;
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};
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struct st33zp24_phy_ops {
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int (*send)(void *phy_id, u8 tpm_register, u8 *tpm_data, int tpm_size);
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int (*recv)(void *phy_id, u8 tpm_register, u8 *tpm_data, int tpm_size);
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};
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#ifdef CONFIG_PM_SLEEP
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int st33zp24_pm_suspend(struct device *dev);
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int st33zp24_pm_resume(struct device *dev);
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#endif
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int st33zp24_probe(void *phy_id, const struct st33zp24_phy_ops *ops,
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struct device *dev, int irq);
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void st33zp24_remove(struct tpm_chip *chip);
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#endif /* __LOCAL_ST33ZP24_H__ */
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