linux-kernel - [RFC PATCH 5/5] mfd: rn5t618: add ADC subdevice for RN5T618

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Message-Id: <20200117215926.15194-6-andreas@kemnade.info>
Date:   Fri, 17 Jan 2020 22:59:26 +0100
From:   Andreas Kemnade <andreas@...nade.info>
To:     jic23@...nel.org, knaack.h@....de, lars@...afoo.de,
        pmeerw@...erw.net, lee.jones@...aro.org, b.galvani@...il.com,
        linus.walleij@...aro.org, andreas@...nade.info,
        linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org,
        phh@....me, stefan@...er.ch, letux-kernel@...nphoenux.org
Subject: [RFC PATCH 5/5] mfd: rn5t618: add ADC subdevice for RN5T618

RN5T618 has an ADC but RN5T567 has not, so
we need separate subdevice lists for both.

Signed-off-by: Andreas Kemnade <andreas@...nade.info>
---
Untested, IMHO only acceptable with a Tested-By
 drivers/mfd/rn5t618.c | 26 ++++++++++++++++++++++++--
 1 file changed, 24 insertions(+), 2 deletions(-)

diff --git a/drivers/mfd/rn5t618.c b/drivers/mfd/rn5t618.c
index 6828fd40b0a1..d37d7a31cf26 100644
--- a/drivers/mfd/rn5t618.c
+++ b/drivers/mfd/rn5t618.c
@@ -21,6 +21,7 @@
 static const struct mfd_cell rn5t618_cells[] = {
 	{ .name = "rn5t618-regulator" },
 	{ .name = "rn5t618-wdt" },
+	{ .name = "rn5t618-adc" },
 };
 
 static const struct mfd_cell rc5t619_cells[] = {
@@ -30,6 +31,11 @@ static const struct mfd_cell rc5t619_cells[] = {
 	{ .name = "rn5t618-wdt" },
 };
 
+static const struct mfd_cell rn5t567_cells[] = {
+	{ .name = "rn5t618-regulator" },
+	{ .name = "rn5t618-wdt" },
+};
+
 static bool rn5t618_volatile_reg(struct device *dev, unsigned int reg)
 {
 	switch (reg) {
@@ -203,16 +209,32 @@ static int rn5t618_i2c_probe(struct i2c_client *i2c,
 		return ret;
 	}
 
-	if (priv->variant == RC5T619)
+	switch (priv->variant) {
+	case RC5T619:
 		ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_NONE,
 					   rc5t619_cells,
 					   ARRAY_SIZE(rc5t619_cells),
 					   NULL, 0, NULL);
-	else
+		break;
+	case RN5T618:
 		ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_NONE,
 					   rn5t618_cells,
 					   ARRAY_SIZE(rn5t618_cells),
 					   NULL, 0, NULL);
+		break;
+	case RN5T567:
+		ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_NONE,
+					   rn5t567_cells,
+					   ARRAY_SIZE(rn5t567_cells),
+					   NULL, 0, NULL);
+		break;
+	/*
+	 * Should not happen because we come here only with a valid device
+	 * tree match, so variant contains any of the above.
+	 */
+	default:
+		return -ENOENT;
+	}
 	if (ret) {
 		dev_err(&i2c->dev, "failed to add sub-devices: %d\n", ret);
 		return ret;
-- 
2.20.1