From: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
To: Arnd Bergmann <arnd@arndb.de>, Lee Jones <lee@kernel.org>,
Linus Walleij <linus.walleij@linaro.org>
Cc: Alyssa Rosenzweig <alyssa@rosenzweig.io>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
asahi@lists.linux.dev, Bartosz Golaszewski <brgl@bgdev.pl>,
devicetree@vger.kernel.org, Hector Martin <marcan@marcan.st>,
Jonathan Corbet <corbet@lwn.net>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org,
linux-gpio@vger.kernel.org, Petr Mladek <pmladek@suse.com>,
Rasmus Villemoes <linux@rasmusvillemoes.dk>,
Rob Herring <robh+dt@kernel.org>,
Sergey Senozhatsky <senozhatsky@chromium.org>,
Steven Rostedt <rostedt@goodmis.org>,
Sven Peter <sven@svenpeter.dev>
Subject: [PATCH 3/7] soc: apple: rtkit: Add apple_rtkit_poll
Date: Tue, 06 Sep 2022 14:19:39 +0100 [thread overview]
Message-ID: <E1oVYUN-005CmM-Dn@rmk-PC.armlinux.org.uk> (raw)
In-Reply-To: <YxdInl2qzQWM+3bs@shell.armlinux.org.uk>
From: Hector Martin <marcan@marcan.st>
This allows a client to receive messages in atomic context, by polling.
Signed-off-by: Hector Martin <marcan@marcan.st>
Reviewed-by: Sven Peter <sven@svenpeter.dev>
Reviewed-by: Eric Curtin <ecurtin@redhat.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
---
drivers/soc/apple/rtkit.c | 6 ++++++
include/linux/soc/apple/rtkit.h | 12 ++++++++++++
2 files changed, 18 insertions(+)
diff --git a/drivers/soc/apple/rtkit.c b/drivers/soc/apple/rtkit.c
index cf1129e9f76b..031ec4aa06d5 100644
--- a/drivers/soc/apple/rtkit.c
+++ b/drivers/soc/apple/rtkit.c
@@ -660,6 +660,12 @@ int apple_rtkit_send_message_wait(struct apple_rtkit *rtk, u8 ep, u64 message,
}
EXPORT_SYMBOL_GPL(apple_rtkit_send_message_wait);
+int apple_rtkit_poll(struct apple_rtkit *rtk)
+{
+ return mbox_client_peek_data(rtk->mbox_chan);
+}
+EXPORT_SYMBOL_GPL(apple_rtkit_poll);
+
int apple_rtkit_start_ep(struct apple_rtkit *rtk, u8 endpoint)
{
u64 msg;
diff --git a/include/linux/soc/apple/rtkit.h b/include/linux/soc/apple/rtkit.h
index 88eb832eac7b..c9cabb679cd1 100644
--- a/include/linux/soc/apple/rtkit.h
+++ b/include/linux/soc/apple/rtkit.h
@@ -152,4 +152,16 @@ int apple_rtkit_send_message(struct apple_rtkit *rtk, u8 ep, u64 message,
int apple_rtkit_send_message_wait(struct apple_rtkit *rtk, u8 ep, u64 message,
unsigned long timeout, bool atomic);
+/*
+ * Process incoming messages in atomic context.
+ * This only guarantees that messages arrive as far as the recv_message_early
+ * callback; drivers expecting to handle incoming messages synchronously
+ * by calling this function must do it that way.
+ * Will return 1 if some data was processed, 0 if none was, or a
+ * negative error code on failure.
+ *
+ * @rtk: RTKit reference
+ */
+int apple_rtkit_poll(struct apple_rtkit *rtk);
+
#endif /* _LINUX_APPLE_RTKIT_H_ */
--
2.30.2
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next prev parent reply other threads:[~2022-09-06 13:21 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-06 13:18 [PATCH v2 0/7] Add Apple Mac System Management Controller GPIOs Russell King (Oracle)
2022-09-06 13:19 ` [PATCH 1/7] dt-bindings: mfd: add binding for Apple Mac System Management Controller Russell King (Oracle)
2022-09-06 14:04 ` Mark Kettenis
2022-09-07 15:41 ` Rob Herring
2022-09-06 13:19 ` [PATCH 2/7] dt-bindings: gpio: add binding for the GPIO block for Apple Mac SMC Russell King (Oracle)
2022-09-06 14:05 ` Mark Kettenis
2022-09-07 15:38 ` Rob Herring
2022-09-08 12:17 ` Krzysztof Kozlowski
2022-09-08 14:25 ` Russell King (Oracle)
2022-09-06 13:19 ` Russell King [this message]
2022-09-06 13:19 ` [PATCH 4/7] lib/vsprintf: Add support for generic FOURCCs by extending %p4cc Russell King
2022-09-06 22:11 ` Rasmus Villemoes
2022-10-19 10:00 ` Petr Mladek
2022-10-19 11:20 ` Andy Shevchenko
2022-10-19 11:48 ` Russell King (Oracle)
2022-10-24 4:53 ` Hector Martin
2022-09-06 13:19 ` [PATCH 5/7] platform/apple: Add new Apple Mac SMC driver Russell King
2022-09-06 13:39 ` Sven Peter
2022-09-06 13:19 ` [PATCH 6/7] gpio: Add new gpio-macsmc driver for Apple Macs Russell King
2022-09-06 13:40 ` Sven Peter
2022-09-06 13:20 ` [PATCH 7/7] arm64: dts: apple: Add SMC node to t8103/t6001 devicetrees Russell King
2022-09-06 13:42 ` Sven Peter
2022-09-08 16:46 ` Russell King (Oracle)
2022-09-08 8:03 ` Janne Grunau
2022-09-06 13:38 ` [PATCH v2 0/7] Add Apple Mac System Management Controller GPIOs Linus Walleij
2022-09-07 10:02 ` Bartosz Golaszewski
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