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| author | William Breathitt Gray <william.gray@linaro.org> | 2023-04-16 13:36:53 -0400 |
|---|---|---|
| committer | William Breathitt Gray <william.gray@linaro.org> | 2023-06-08 10:11:17 -0400 |
| commit | d428487471ba6640ee8bcdabaf830aec08b85400 (patch) | |
| tree | b5d9fe8d2607eb54a2ba0822d754da5b8e752612 /drivers/counter/counter-sysfs.c | |
| parent | 98ffe02529117095fad0399ce16235d66b8b5f8d (diff) | |
| download | linux-stable-d428487471ba6640ee8bcdabaf830aec08b85400.tar.gz linux-stable-d428487471ba6640ee8bcdabaf830aec08b85400.tar.bz2 linux-stable-d428487471ba6640ee8bcdabaf830aec08b85400.zip | |
counter: i8254: Introduce the Intel 8254 interface library module
Exposes consumer library functions providing support for interfaces
compatible with the venerable Intel 8254 Programmable Interval Timer
(PIT).
The Intel 8254 PIT first appeared in the early 1980s and was used
initially in IBM PC compatibles. The popularity of the original Intel
825x family of chips led to many subsequent variants and clones of the
interface in various chips and integrated circuits. Although still
popular, interfaces compatible with the Intel 8254 PIT are nowdays
typically found embedded in larger VLSI processing chips and FPGA
components rather than as discrete ICs.
A CONFIG_I8254 Kconfig option is introduced by this patch. Modules
wanting access to these i8254 library functions should select this
Kconfig option, and import the I8254 symbol namespace.
Link: https://lore.kernel.org/r/f6fe32c2db9525d816ab1a01f45abad56c081652.1681665189.git.william.gray@linaro.org/
Signed-off-by: William Breathitt Gray <william.gray@linaro.org>
Diffstat (limited to 'drivers/counter/counter-sysfs.c')
| -rw-r--r-- | drivers/counter/counter-sysfs.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/counter/counter-sysfs.c b/drivers/counter/counter-sysfs.c index b9efe66f9f8d..42c523343d32 100644 --- a/drivers/counter/counter-sysfs.c +++ b/drivers/counter/counter-sysfs.c @@ -88,7 +88,13 @@ static const char *const counter_count_mode_str[] = { [COUNTER_COUNT_MODE_NORMAL] = "normal", [COUNTER_COUNT_MODE_RANGE_LIMIT] = "range limit", [COUNTER_COUNT_MODE_NON_RECYCLE] = "non-recycle", - [COUNTER_COUNT_MODE_MODULO_N] = "modulo-n" + [COUNTER_COUNT_MODE_MODULO_N] = "modulo-n", + [COUNTER_COUNT_MODE_INTERRUPT_ON_TERMINAL_COUNT] = "interrupt on terminal count", + [COUNTER_COUNT_MODE_HARDWARE_RETRIGGERABLE_ONESHOT] = "hardware retriggerable one-shot", + [COUNTER_COUNT_MODE_RATE_GENERATOR] = "rate generator", + [COUNTER_COUNT_MODE_SQUARE_WAVE_MODE] = "square wave mode", + [COUNTER_COUNT_MODE_SOFTWARE_TRIGGERED_STROBE] = "software triggered strobe", + [COUNTER_COUNT_MODE_HARDWARE_TRIGGERED_STROBE] = "hardware triggered strobe", }; static const char *const counter_signal_polarity_str[] = { |