All of lore.kernel.org
 help / color / mirror / Atom feed
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


  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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20190919080305.960198-1-felipe.balbi@linux.intel.com \
    --to=felipe.balbi@linux.intel.com \
    --cc=linux-iio@vger.kernel.org \
    --cc=vilhelm.gray@gmail.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.