diff options
| author | Bence Csókás <csokas.bence@prolan.hu> | 2025-03-06 14:44:36 +0100 |
|---|---|---|
| committer | William Breathitt Gray <wbg@kernel.org> | 2025-03-08 08:57:02 +0900 |
| commit | e5d5813968217b99ef2b83f13353967b218e3841 (patch) | |
| tree | e356172076a6a93138af03df5ba91f82dcf3fa60 /include/uapi | |
| parent | counter: ti-eqep: add direction support (diff) | |
| download | linux-e5d5813968217b99ef2b83f13353967b218e3841.tar.gz linux-e5d5813968217b99ef2b83f13353967b218e3841.zip | |
counter: microchip-tcb-capture: Add IRQ handling
Add interrupt servicing to allow userspace to wait for the following:
* Change-of-state caused by external trigger
* Capture of timer value into RA/RB
* Compare to RC register
* Overflow
Signed-off-by: Bence Csókás <csokas.bence@prolan.hu>
Link: https://lore.kernel.org/r/20250306134441.582819-2-csokas.bence@prolan.hu
Signed-off-by: William Breathitt Gray <wbg@kernel.org>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/counter/microchip-tcb-capture.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/include/uapi/linux/counter/microchip-tcb-capture.h b/include/uapi/linux/counter/microchip-tcb-capture.h new file mode 100644 index 000000000000..f3ef315fe9f6 --- /dev/null +++ b/include/uapi/linux/counter/microchip-tcb-capture.h @@ -0,0 +1,34 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +/* + * Channel numbers used by the microchip-tcb-capture driver + * Copyright (C) 2025 Bence Csókás + */ +#ifndef _UAPI_COUNTER_MCHP_TCB_H_ +#define _UAPI_COUNTER_MCHP_TCB_H_ + +/* + * The driver defines the following components: + * + * Count 0 + * \__ Synapse 0 -- Signal 0 (Channel A, i.e. TIOA) + * \__ Synapse 1 -- Signal 1 (Channel B, i.e. TIOB) + * + * It also supports the following events: + * + * Channel 0: + * - CV register changed + * - CV overflowed + * - RA captured + * Channel 1: + * - RB captured + * Channel 2: + * - RC compare triggered + */ + +/* Event channels */ +#define COUNTER_MCHP_EVCHN_CV 0 +#define COUNTER_MCHP_EVCHN_RA 0 +#define COUNTER_MCHP_EVCHN_RB 1 +#define COUNTER_MCHP_EVCHN_RC 2 + +#endif /* _UAPI_COUNTER_MCHP_TCB_H_ */ |