linux-kernel - [PATCH v4 3/5] mfd: twl-core: Add a clock subdevice for the TWL6032

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Date:   Sat, 16 Sep 2023 12:05:13 +0200
From:   Andreas Kemnade <andreas@...nade.info>
To:     dmitry.torokhov@...il.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        lee@...nel.org, bcousson@...libre.com, tony@...mide.com,
        mturquette@...libre.com, sboyd@...nel.org, andreas@...nade.info,
        linux-input@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-omap@...r.kernel.org,
        linux-clk@...r.kernel.org
Subject: [PATCH v4 3/5] mfd: twl-core: Add a clock subdevice for the TWL6032

Clock device needs no separate devicetree node, so add it as
a platform device. Other devices in the family also have controllable
clocks, but due to the lack of testing, just add it for the TWL6032
now.

Signed-off-by: Andreas Kemnade <andreas@...nade.info>
---
 drivers/mfd/twl-core.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/drivers/mfd/twl-core.c b/drivers/mfd/twl-core.c
index ce01a87f8dc39..234500b2e53fc 100644
--- a/drivers/mfd/twl-core.c
+++ b/drivers/mfd/twl-core.c
@@ -31,6 +31,8 @@
 #include <linux/regulator/machine.h>
 
 #include <linux/i2c.h>
+
+#include <linux/mfd/core.h>
 #include <linux/mfd/twl.h>
 
 /* Register descriptions for audio */
@@ -690,6 +692,10 @@ static struct of_dev_auxdata twl_auxdata_lookup[] = {
 	{ /* sentinel */ },
 };
 
+static const struct mfd_cell twl6032_cells[] = {
+	{ .name = "twl6032-clk" },
+};
+
 /* NOTE: This driver only handles a single twl4030/tps659x0 chip */
 static int
 twl_probe(struct i2c_client *client)
@@ -836,6 +842,16 @@ twl_probe(struct i2c_client *client)
 				 TWL4030_DCDC_GLOBAL_CFG);
 	}
 
+	if (id->driver_data == (TWL6030_CLASS | TWL6032_SUBCLASS)) {
+		status = devm_mfd_add_devices(&client->dev,
+					      PLATFORM_DEVID_NONE,
+					      twl6032_cells,
+					      ARRAY_SIZE(twl6032_cells),
+					      NULL, 0, NULL);
+		if (status < 0)
+			goto free;
+	}
+
 	status = of_platform_populate(node, NULL, twl_auxdata_lookup,
 				      &client->dev);
 
-- 
2.39.2