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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef TOUCHSCREEN_BUS_NEGOTIATOR_H
#define TOUCHSCREEN_BUS_NEGOTIATOR_H
#include <linux/notifier.h>
#include <linux/mutex.h>
#include <linux/device.h>
#define TBN_REQUEST_BUS_TIMEOUT_MS 500
#define TBN_RELEASE_BUS_TIMEOUT_MS 500
enum tbn_mode {
TBN_MODE_DISABLED,
TBN_MODE_GPIO,
TBN_MODE_MAILBOX,
};
enum tbn_bus_owner {
TBN_BUS_OWNER_AP = 0,
TBN_BUS_OWNER_AOC = 1,
};
struct tbn_context {
struct device *dev;
struct completion bus_requested;
struct completion bus_released;
struct mutex dev_mask_mutex;
u8 mode;
u32 max_devices;
u32 registered_mask;
u32 requested_dev_mask;
int aoc2ap_gpio;
int ap2aoc_gpio;
int aoc2ap_irq;
};
int register_tbn(u32 *output);
void unregister_tbn(u32 *output);
int tbn_request_bus(u32 dev_mask);
int tbn_release_bus(u32 dev_mask);
#endif /* TOUCHSCREEN_BUS_NEGOTIATOR_H */
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