51 lines
1.6 KiB
C
51 lines
1.6 KiB
C
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/* Copyright 2019 IBM Corp.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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* implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __DIO_H
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#define __DIO_H
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struct proc_chip;
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/* Initialize the P9 DIO */
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extern void p9_dio_init(void);
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/* The function typedef for dio interrupt callback */
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typedef void (*dio_interrupt_callback)(struct proc_chip *chip);
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/* Register dio interrupt on GPIO port.
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* This effectively enables the DIO interrupt on the GPIO port,
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* and callback will be called when the interrupt is triggered */
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extern int dio_interrupt_register(struct proc_chip *chip,
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int port, dio_interrupt_callback c);
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/* Deregister dio interrupt on GPIO port.
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* This effectively disables the DIO interrupt on the GPIO port. */
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extern int dio_interrupt_deregister(struct proc_chip *chip,
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int port, dio_interrupt_callback c);
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/* The function to be called when DIO interrupt is triggered */
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extern void dio_interrupt_handler(uint32_t chip_id);
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#define NUM_OF_P9_DIO_PORTS 3 /* P9 has GPIO port 0~2 for interrupts */
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struct p9_dio {
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dio_interrupt_callback callbacks[NUM_OF_P9_DIO_PORTS];
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};
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#endif /* __DIO_H */
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