From: Felipe Balbi <felipe.balbi@linux.intel.com>
To: William Breathitt Gray <vilhelm.gray@gmail.com>
Cc: linux-iio@vger.kernel.org, Felipe Balbi <felipe.balbi@linux.intel.com>
Subject: [RFC/PATCH 1/2] counter: add support for Quadrature x4 with swapped inputs
Date: Thu, 19 Sep 2019 11:03:04 +0300 [thread overview]
Message-ID: <20190919080305.960198-1-felipe.balbi@linux.intel.com> (raw)
In-Reply-To: <20190917114403.GA8368@icarus>
Some Quadrature Encoders can swap phase inputs A and B
internally. This new function will allow drivers to configure input
swap mode.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
---
drivers/counter/counter.c | 3 ++-
include/linux/counter.h | 3 ++-
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/counter/counter.c b/drivers/counter/counter.c
index 106bc7180cd8..b818ae9e85f2 100644
--- a/drivers/counter/counter.c
+++ b/drivers/counter/counter.c
@@ -823,7 +823,8 @@ static const char *const counter_count_function_str[] = {
[COUNTER_COUNT_FUNCTION_QUADRATURE_X1_B] = "quadrature x1 b",
[COUNTER_COUNT_FUNCTION_QUADRATURE_X2_A] = "quadrature x2 a",
[COUNTER_COUNT_FUNCTION_QUADRATURE_X2_B] = "quadrature x2 b",
- [COUNTER_COUNT_FUNCTION_QUADRATURE_X4] = "quadrature x4"
+ [COUNTER_COUNT_FUNCTION_QUADRATURE_X4] = "quadrature x4",
+ [COUNTER_COUNT_FUNCTION_QUADRATURE_X4_SWAPPED] = "quadrature x4 swapped"
};
static ssize_t counter_function_show(struct device *dev,
diff --git a/include/linux/counter.h b/include/linux/counter.h
index a061cdcdef7c..860769250f89 100644
--- a/include/linux/counter.h
+++ b/include/linux/counter.h
@@ -170,7 +170,8 @@ enum counter_count_function {
COUNTER_COUNT_FUNCTION_QUADRATURE_X1_B,
COUNTER_COUNT_FUNCTION_QUADRATURE_X2_A,
COUNTER_COUNT_FUNCTION_QUADRATURE_X2_B,
- COUNTER_COUNT_FUNCTION_QUADRATURE_X4
+ COUNTER_COUNT_FUNCTION_QUADRATURE_X4,
+ COUNTER_COUNT_FUNCTION_QUADRATURE_X4_SWAPPED,
};
/**
--
2.23.0
next prev parent reply other threads:[~2019-09-19 8:03 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-16 9:34 [RFC/PATCH] counter: introduce support for Intel QEP Encoder Felipe Balbi
2019-09-17 11:46 ` William Breathitt Gray
2019-09-17 12:07 ` Felipe Balbi
2019-09-17 13:02 ` William Breathitt Gray
2019-09-19 8:03 ` Felipe Balbi [this message]
2019-09-19 8:03 ` [RFC/PATCHv2 2/2] " Felipe Balbi
2019-09-22 23:35 ` William Breathitt Gray
2019-09-24 9:46 ` Felipe Balbi
2019-09-24 11:32 ` William Breathitt Gray
2019-09-24 11:35 ` Felipe Balbi
2019-10-01 9:32 ` [PATCH v3 1/2] counter: add support for Quadrature x4 with swapped inputs Felipe Balbi
2019-10-01 9:32 ` [PATCH v3 2/2] counter: introduce support for Intel QEP Encoder Felipe Balbi
2019-10-02 18:11 ` William Breathitt Gray
2019-10-02 16:37 ` [PATCH v3 1/2] counter: add support for Quadrature x4 with swapped inputs William Breathitt Gray
2019-10-03 12:38 ` [RFC/PATCHv2 2/2] counter: introduce support for Intel QEP Encoder Jonathan Cameron
2019-09-24 21:46 ` David Lechner
2019-09-28 21:33 ` William Breathitt Gray
2019-09-30 5:22 ` Felipe Balbi
2019-10-02 0:34 ` William Breathitt Gray
2019-10-03 13:14 ` Jonathan Cameron
2019-10-16 20:20 ` William Breathitt Gray
2019-10-17 12:29 ` Jonathan Cameron
2019-09-24 11:37 ` [RFC/PATCH 1/2] counter: add support for Quadrature x4 with swapped inputs William Breathitt Gray
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