From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Andi Shyti <andi.shyti@kernel.org>,
Wolfram Sang <wsa+renesas@sang-engineering.com>,
linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org,
linux-renesas-soc@vger.kernel.org
Cc: Krzysztof Adamski <krzysztof.adamski@nokia.com>,
Florian Fainelli <florian.fainelli@broadcom.com>,
Ray Jui <rjui@broadcom.com>,
Scott Branden <sbranden@broadcom.com>,
Broadcom internal kernel review list
<bcm-kernel-feedback-list@broadcom.com>,
Stefan Roese <sr@denx.de>,
Matthias Brugger <matthias.bgg@gmail.com>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com>,
Gregory CLEMENT <gregory.clement@bootlin.com>,
Fabrizio Castro <fabrizio.castro.jz@renesas.com>
Subject: [PATCH v1 1/8] i2c: Introduce i2c_10bit_addr_from_msg()
Date: Wed, 12 Feb 2025 18:32:26 +0200 [thread overview]
Message-ID: <20250212163359.2407327-2-andriy.shevchenko@linux.intel.com> (raw)
In-Reply-To: <20250212163359.2407327-1-andriy.shevchenko@linux.intel.com>
There are already a lot of drivers that have been using
i2c_8bit_addr_from_msg() for 7-bit addresses, now it's time
to have the similar for 10-bit addresses.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
include/linux/i2c.h | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index 997e80649889..4d281ff5582b 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -952,6 +952,16 @@ static inline u8 i2c_8bit_addr_from_msg(const struct i2c_msg *msg)
return (msg->addr << 1) | (msg->flags & I2C_M_RD);
}
+static inline u8 i2c_10bit_addr_from_msg(const struct i2c_msg *msg)
+{
+ /*
+ * 10-bit address
+ * addr_1: 5'b11110 | addr[9:8] | (R/nW)
+ * addr_2: addr[7:0]
+ */
+ return 0xf0 | ((msg->addr & GENMASK(9, 8)) >> 7) | (msg->flags & I2C_M_RD);
+}
+
u8 *i2c_get_dma_safe_msg_buf(struct i2c_msg *msg, unsigned int threshold);
void i2c_put_dma_safe_msg_buf(u8 *buf, struct i2c_msg *msg, bool xferred);
--
2.45.1.3035.g276e886db78b
next prev parent reply other threads:[~2025-02-12 16:34 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-12 16:32 [PATCH v1 0/8] i2c: busses: Introduce and use i2c_10bit_addr_from_msg() Andy Shevchenko
2025-02-12 16:32 ` Andy Shevchenko [this message]
2025-02-12 17:06 ` [PATCH v1 1/8] i2c: Introduce i2c_10bit_addr_from_msg() Fabrizio Castro
2025-02-12 18:36 ` Geert Uytterhoeven
2025-02-12 19:04 ` Andy Shevchenko
2025-02-13 10:02 ` Wolfram Sang
2025-02-13 10:54 ` Andy Shevchenko
2025-02-13 13:04 ` Andy Shevchenko
2025-02-13 11:10 ` Geert Uytterhoeven
2025-02-13 22:41 ` Andi Shyti
2025-02-14 8:04 ` Geert Uytterhoeven
2025-02-14 13:55 ` Andy Shevchenko
2025-02-13 22:40 ` Andi Shyti
2025-02-12 16:32 ` [PATCH v1 2/8] i2c: axxia: Use i2c_10bit_addr_from_msg() helper Andy Shevchenko
2025-02-12 16:32 ` [PATCH v1 3/8] i2c: bcm-kona: " Andy Shevchenko
2025-02-12 16:32 ` [PATCH v1 4/8] i2c: eg20t: " Andy Shevchenko
2025-02-12 16:32 ` [PATCH v1 5/8] i2c: kempld: " Andy Shevchenko
2025-02-12 16:32 ` [PATCH v1 6/8] i2c: mt7621: " Andy Shevchenko
2025-02-12 16:32 ` [PATCH v1 7/8] i2c: mv64xxx: Use i2c_*bit_addr_from_msg() helpers Andy Shevchenko
2025-02-12 16:32 ` [PATCH v1 8/8] i2c: rzv2m: Use i2c_10bit_addr_from_msg() helper Andy Shevchenko
2025-02-12 17:08 ` Fabrizio Castro
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