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tpm: Allow tpm_tis drivers to set hwrng quality.

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Adds plumbing required for drivers based on tpm_tis to set hwrng quality.

Signed-off-by: Louis Collard <louiscollard@chromium.org>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
This commit is contained in:
Louis Collard 2018-06-29 16:13:55 +08:00 • committed by Jarkko Sakkinen
parent 36a11029b0
commit 7a64c5597a
2 changed files with 3 additions and 0 deletions
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2
drivers/char/tpm/tpm_tis_core.c
View file

@ -875,6 +875,8 @@ int tpm_tis_core_init(struct device *dev, struct tpm_tis_data *priv, int irq,
chip->acpi_dev_handle = acpi_dev_handle; chip->acpi_dev_handle = acpi_dev_handle;
#endif #endif
chip->hwrng.quality = priv->rng_quality;
/* Maximum timeouts */ /* Maximum timeouts */
chip->timeout_a = msecs_to_jiffies(TIS_TIMEOUT_A_MAX); chip->timeout_a = msecs_to_jiffies(TIS_TIMEOUT_A_MAX);
chip->timeout_b = msecs_to_jiffies(TIS_TIMEOUT_B_MAX); chip->timeout_b = msecs_to_jiffies(TIS_TIMEOUT_B_MAX);

1
drivers/char/tpm/tpm_tis_core.h
View file

@ -99,6 +99,7 @@ struct tpm_tis_data {
wait_queue_head_t int_queue; wait_queue_head_t int_queue;
wait_queue_head_t read_queue; wait_queue_head_t read_queue;
const struct tpm_tis_phy_ops *phy_ops; const struct tpm_tis_phy_ops *phy_ops;
unsigned short rng_quality;
}; };
struct tpm_tis_phy_ops { struct tpm_tis_phy_ops {