m1n1/src/tps6598x.h
Janne Grunau 98076ef693 usb: disable tps6598x interrupts
Restore the interrupt masks on chainload or HV guest start. The
interrupt mask is not restored on the USB-C port used by the hypervisor.
This prevents an interrupt storm in the guest when the other USB-C port
is exposed to the guest. Both tps6598x share unfortunately an interrupt
line.

Signed-off-by: Janne Grunau <j@jannau.net>
2021-06-18 14:26:54 +09:00

28 lines
770 B
C

/* SPDX-License-Identifier: MIT */
#ifndef TPS6598X_H
#define TPS6598X_H
#include "i2c.h"
#include "types.h"
typedef struct tps6598x_dev tps6598x_dev_t;
tps6598x_dev_t *tps6598x_init(const char *adt_path, i2c_dev_t *i2c);
void tps6598x_shutdown(tps6598x_dev_t *dev);
int tps6598x_command(tps6598x_dev_t *dev, const char *cmd, const u8 *data_in, size_t len_in,
u8 *data_out, size_t len_out);
int tps6598x_powerup(tps6598x_dev_t *dev);
#define CD3218B12_IRQ_WIDTH 9
typedef struct tps6598x_irq_state {
u8 int_mask1[CD3218B12_IRQ_WIDTH];
bool valid;
} tps6598x_irq_state_t;
int tps6598x_disable_irqs(tps6598x_dev_t *dev, tps6598x_irq_state_t *state);
int tps6598x_restore_irqs(tps6598x_dev_t *dev, tps6598x_irq_state_t *state);
#endif