linux-gpio.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
	linux-gpio@vger.kernel.org, linux-doc@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org
Cc: Linus Walleij <linus.walleij@linaro.org>,
	Bartosz Golaszewski <brgl@bgdev.pl>,
	Jonathan Corbet <corbet@lwn.net>,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	Len Brown <lenb@kernel.org>,
	Mika Westerberg <mika.westerberg@linux.intel.com>
Subject: [PATCH v1 1/1] ACPI: docs: gpio-properties: Unify ASL style for GPIO examples
Date: Tue,  8 Mar 2022 16:05:59 +0200	[thread overview]
Message-ID: <20220308140559.46932-1-andriy.shevchenko@linux.intel.com> (raw)

GPIO examples of ASL in the board.rst, enumeration.rst and gpio-properties.rst
are not unified. Unify them for better reader experience.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 Documentation/driver-api/gpio/board.rst       | 21 +++++++--------
 .../firmware-guide/acpi/enumeration.rst       | 22 ++++------------
 .../firmware-guide/acpi/gpio-properties.rst   | 26 ++++++++++---------
 3 files changed, 28 insertions(+), 41 deletions(-)

diff --git a/Documentation/driver-api/gpio/board.rst b/Documentation/driver-api/gpio/board.rst
index 191fa867826a..4e3adf31c8d1 100644
--- a/Documentation/driver-api/gpio/board.rst
+++ b/Documentation/driver-api/gpio/board.rst
@@ -71,14 +71,14 @@ with the help of _DSD (Device Specific Data), introduced in ACPI 5.1::
 
 	Device (FOO) {
 		Name (_CRS, ResourceTemplate () {
-			GpioIo (Exclusive, ..., IoRestrictionOutputOnly,
-				"\\_SB.GPI0") {15} // red
-			GpioIo (Exclusive, ..., IoRestrictionOutputOnly,
-				"\\_SB.GPI0") {16} // green
-			GpioIo (Exclusive, ..., IoRestrictionOutputOnly,
-				"\\_SB.GPI0") {17} // blue
-			GpioIo (Exclusive, ..., IoRestrictionOutputOnly,
-				"\\_SB.GPI0") {1} // power
+			GpioIo (Exclusive, PullUp, 0, 0, IoRestrictionOutputOnly,
+				"\\_SB.GPI0", 0, ResourceConsumer) { 15 } // red
+			GpioIo (Exclusive, PullUp, 0, 0, IoRestrictionOutputOnly,
+				"\\_SB.GPI0", 0, ResourceConsumer) { 16 } // green
+			GpioIo (Exclusive, PullUp, 0, 0, IoRestrictionOutputOnly,
+				"\\_SB.GPI0", 0, ResourceConsumer) { 17 } // blue
+			GpioIo (Exclusive, PullNone, 0, 0, IoRestrictionOutputOnly,
+				"\\_SB.GPI0", 0, ResourceConsumer) { 1 } // power
 		})
 
 		Name (_DSD, Package () {
@@ -92,10 +92,7 @@ with the help of _DSD (Device Specific Data), introduced in ACPI 5.1::
 						^FOO, 2, 0, 1,
 					}
 				},
-				Package () {
-					"power-gpios",
-					Package () {^FOO, 3, 0, 0},
-				},
+				Package () { "power-gpios", Package () { ^FOO, 3, 0, 0 } },
 			}
 		})
 	}
diff --git a/Documentation/firmware-guide/acpi/enumeration.rst b/Documentation/firmware-guide/acpi/enumeration.rst
index 8c9e758f6e9b..6b62425ef9cd 100644
--- a/Documentation/firmware-guide/acpi/enumeration.rst
+++ b/Documentation/firmware-guide/acpi/enumeration.rst
@@ -333,26 +333,13 @@ For example::
 		{
 			Name (SBUF, ResourceTemplate()
 			{
-				...
 				// Used to power on/off the device
-				GpioIo (Exclusive, PullDefault, 0x0000, 0x0000,
-					IoRestrictionOutputOnly, "\\_SB.PCI0.GPI0",
-					0x00, ResourceConsumer,,)
-				{
-					// Pin List
-					0x0055
-				}
+				GpioIo (Exclusive, PullNone, 0, 0, IoRestrictionOutputOnly,
+					"\\_SB.PCI0.GPI0", 0, ResourceConsumer) { 85 }
 
 				// Interrupt for the device
-				GpioInt (Edge, ActiveHigh, ExclusiveAndWake, PullNone,
-					0x0000, "\\_SB.PCI0.GPI0", 0x00, ResourceConsumer,,)
-				{
-					// Pin list
-					0x0058
-				}
-
-				...
-
+				GpioInt (Edge, ActiveHigh, ExclusiveAndWake, PullNone, 0,
+					 "\\_SB.PCI0.GPI0", 0, ResourceConsumer) { 88 }
 			}
 
 			Return (SBUF)
@@ -369,6 +356,7 @@ For example::
 			}
 		})
 		...
+	}
 
 These GPIO numbers are controller relative and path "\\_SB.PCI0.GPI0"
 specifies the path to the controller. In order to use these GPIOs in Linux
diff --git a/Documentation/firmware-guide/acpi/gpio-properties.rst b/Documentation/firmware-guide/acpi/gpio-properties.rst
index df4b711053ee..eaec732cc77c 100644
--- a/Documentation/firmware-guide/acpi/gpio-properties.rst
+++ b/Documentation/firmware-guide/acpi/gpio-properties.rst
@@ -21,18 +21,18 @@ index, like the ASL example below shows::
       Name (_CRS, ResourceTemplate ()
       {
           GpioIo (Exclusive, PullUp, 0, 0, IoRestrictionOutputOnly,
-                  "\\_SB.GPO0", 0, ResourceConsumer) {15}
+                  "\\_SB.GPO0", 0, ResourceConsumer) { 15 }
           GpioIo (Exclusive, PullUp, 0, 0, IoRestrictionOutputOnly,
-                  "\\_SB.GPO0", 0, ResourceConsumer) {27, 31}
+                  "\\_SB.GPO0", 0, ResourceConsumer) { 27, 31 }
       })
 
       Name (_DSD, Package ()
       {
           ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
           Package ()
-	  {
-              Package () {"reset-gpios", Package() {^BTH, 1, 1, 0 }},
-              Package () {"shutdown-gpios", Package() {^BTH, 0, 0, 0 }},
+          {
+              Package () { "reset-gpios", Package () { ^BTH, 1, 1, 0 } },
+              Package () { "shutdown-gpios", Package () { ^BTH, 0, 0, 0 } },
           }
       })
   }
@@ -123,17 +123,17 @@ Example::
       // _DSD Hierarchical Properties Extension UUID
       ToUUID("dbb8e3e6-5886-4ba6-8795-1319f52a966b"),
       Package () {
-          Package () {"hog-gpio8", "G8PU"}
+          Package () { "hog-gpio8", "G8PU" }
       }
   })
 
   Name (G8PU, Package () {
       ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
       Package () {
-          Package () {"gpio-hog", 1},
-          Package () {"gpios", Package () {8, 0}},
-          Package () {"output-high", 1},
-          Package () {"line-name", "gpio8-pullup"},
+          Package () { "gpio-hog", 1 },
+          Package () { "gpios", Package () { 8, 0 } },
+          Package () { "output-high", 1 },
+          Package () { "line-name", "gpio8-pullup" },
       }
   })
 
@@ -266,15 +266,17 @@ have a device like below::
 
       Name (_CRS, ResourceTemplate () {
           GpioIo (Exclusive, PullNone, 0, 0, IoRestrictionNone,
-                  "\\_SB.GPO0", 0, ResourceConsumer) {15}
+                  "\\_SB.GPO0", 0, ResourceConsumer) { 15 }
           GpioIo (Exclusive, PullNone, 0, 0, IoRestrictionNone,
-                  "\\_SB.GPO0", 0, ResourceConsumer) {27}
+                  "\\_SB.GPO0", 0, ResourceConsumer) { 27 }
       })
   }
 
 The driver might expect to get the right GPIO when it does::
 
   desc = gpiod_get(dev, "reset", GPIOD_OUT_LOW);
+  if (IS_ERR(desc))
+	...error handling...
 
 but since there is no way to know the mapping between "reset" and
 the GpioIo() in _CRS desc will hold ERR_PTR(-ENOENT).
-- 
2.34.1


             reply	other threads:[~2022-03-08 14:05 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-03-08 14:05 Andy Shevchenko [this message]
2022-03-08 16:36 ` [PATCH v1 1/1] ACPI: docs: gpio-properties: Unify ASL style for GPIO examples Mika Westerberg
2022-03-08 19:06   ` Rafael J. Wysocki

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=20220308140559.46932-1-andriy.shevchenko@linux.intel.com \
    --to=andriy.shevchenko@linux.intel.com \
    --cc=brgl@bgdev.pl \
    --cc=corbet@lwn.net \
    --cc=lenb@kernel.org \
    --cc=linus.walleij@linaro.org \
    --cc=linux-acpi@vger.kernel.org \
    --cc=linux-doc@vger.kernel.org \
    --cc=linux-gpio@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mika.westerberg@linux.intel.com \
    --cc=rafael.j.wysocki@intel.com \
    --cc=rafael@kernel.org \
    /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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).