diff options
| author | Justin TerAvest <teravest@chromium.org> | 2018-01-29 19:14:19 -0700 |
|---|---|---|
| committer | Aaron Durbin <adurbin@chromium.org> | 2018-01-30 05:40:05 +0000 |
| commit | ec91dd8feb16ea89d5a5d35b701bca09d1200afa (patch) | |
| tree | e6e560a4b8dbd89af38b08a8440707f692db43d8 /src/drivers/i2c | |
| parent | 309d6ef4abba17099aedb373744d79b39811c07c (diff) | |
drivers/i2c/tpm: Add irq_gpio support to tpm.
Grunt (a amd-stoneyridge based platform) uses a GPIO to interface with
the tpm. This change allows devicetree entries to use a irq_gpio entry
to describe the interface with the TPM.
BUG=b:72655090
Change-Id: I08289891408d7176f68eb9c67f7a417a2448c2de
Signed-off-by: Justin TerAvest <teravest@chromium.org>
Reviewed-on: https://review.coreboot.org/23500
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Diffstat (limited to 'src/drivers/i2c')
| -rw-r--r-- | src/drivers/i2c/tpm/chip.c | 6 | ||||
| -rw-r--r-- | src/drivers/i2c/tpm/chip.h | 1 |
2 files changed, 6 insertions, 1 deletions
diff --git a/src/drivers/i2c/tpm/chip.c b/src/drivers/i2c/tpm/chip.c index 6d5c28a446..2655b0da07 100644 --- a/src/drivers/i2c/tpm/chip.c +++ b/src/drivers/i2c/tpm/chip.c @@ -55,7 +55,11 @@ static void i2c_tpm_fill_ssdt(struct device *dev) acpigen_write_name("_CRS"); acpigen_write_resourcetemplate_header(); acpi_device_write_i2c(&i2c); - acpi_device_write_interrupt(&config->irq); + if (config->irq_gpio.pin_count) + acpi_device_write_gpio(&config->irq_gpio); + else + acpi_device_write_interrupt(&config->irq); + acpigen_write_resourcetemplate_footer(); acpigen_pop_len(); /* Device */ diff --git a/src/drivers/i2c/tpm/chip.h b/src/drivers/i2c/tpm/chip.h index 5abd3a94f3..149627f8f4 100644 --- a/src/drivers/i2c/tpm/chip.h +++ b/src/drivers/i2c/tpm/chip.h @@ -7,4 +7,5 @@ struct drivers_i2c_tpm_config { unsigned int uid; /* ACPI _UID */ enum i2c_speed speed; /* Bus speed in Hz, default is I2C_SPEED_FAST */ struct acpi_irq irq; /* Interrupt */ + struct acpi_gpio irq_gpio; /* GPIO interrupt */ }; |