linux-kernel - [PATCH RFC 2/4] i2c: mux: ltc4306: convert to using a pointer in i2c_device

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Message-ID: <20230814-i2c-id-rework-v1-2-3e5bc71c49ee@gmail.com>
Date:   Mon, 14 Aug 2023 14:52:50 -0700
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Wolfram Sang <wsa@...nel.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Andi Shyti <andi.shyti@...nel.org>,
        Biju Das <biju.das.jz@...renesas.com>,
        Jonathan Cameron <jic23@...nel.org>,
        Michael Hennerich <michael.hennerich@...log.com>,
        Peter Rosin <peda@...ntia.se>
Cc:     linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH RFC 2/4] i2c: mux: ltc4306: convert to using a pointer in i2c_device_id

Switch the driver to use newly added "data" pointer in i2c_device_id to
streamline DT and legacy flows.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
---
 drivers/i2c/muxes/i2c-mux-ltc4306.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/i2c/muxes/i2c-mux-ltc4306.c b/drivers/i2c/muxes/i2c-mux-ltc4306.c
index 637e25506490..17b9ed9ceef3 100644
--- a/drivers/i2c/muxes/i2c-mux-ltc4306.c
+++ b/drivers/i2c/muxes/i2c-mux-ltc4306.c
@@ -192,8 +192,8 @@ static int ltc4306_deselect_mux(struct i2c_mux_core *muxc, u32 chan)
 }
 
 static const struct i2c_device_id ltc4306_id[] = {
-	{ "ltc4305", ltc_4305 },
-	{ "ltc4306", ltc_4306 },
+	{ "ltc4305", .data = &chips[ltc_4305] },
+	{ "ltc4306", .data = &chips[ltc_4306] },
 	{ }
 };
 MODULE_DEVICE_TABLE(i2c, ltc4306_id);
@@ -217,9 +217,8 @@ static int ltc4306_probe(struct i2c_client *client)
 	int num, ret;
 
 	chip = of_device_get_match_data(&client->dev);
-
 	if (!chip)
-		chip = &chips[i2c_match_id(ltc4306_id, client)->driver_data];
+		chip = i2c_match_id(ltc4306_id, client)->data;
 
 	idle_disc = device_property_read_bool(&client->dev,
 					      "i2c-mux-idle-disconnect");

-- 
2.41.0.694.ge786442a9b-goog