linux-kernel - [PATCH v1 07/14] mfd: tps65219: Add power-button support

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Date:   Tue, 19 Jul 2022 11:17:35 +0200
From:   Jerome Neanne <jneanne@...libre.com>
To:     lgirdwood@...il.com, broonie@...nel.org, robh+dt@...nel.org,
        nm@...com, kristo@...nel.org
Cc:     khilman@...libre.com, narmstrong@...libre.com, msp@...libre.com,
        j-keerthy@...c, lee.jones@...aro.org, jneanne@...libre.com,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH v1 07/14] mfd: tps65219: Add power-button support

From: Markus Schneider-Pargmann <msp@...libre.com>

Using a power-button on the EN/PB/VSENSE pin of TPS65219 is optional, so
this driver adds the mfd cell for tps65219-pwrbutton only if needed. Two
interrupts are passed to the driver.

Signed-off-by: Markus Schneider-Pargmann <msp@...libre.com>
Signed-off-by: Jerome Neanne <jneanne@...libre.com>
---
 drivers/mfd/tps65219.c | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/drivers/mfd/tps65219.c b/drivers/mfd/tps65219.c
index b01a62c09885..f9bfc38240ea 100644
--- a/drivers/mfd/tps65219.c
+++ b/drivers/mfd/tps65219.c
@@ -336,7 +336,10 @@ static int tps65219_probe(struct i2c_client *client,
 	struct tps65219 *tps;
 	int ret;
 	unsigned int chipid;
+	bool pwr_button;
 	bool sys_pwr;
+	struct mfd_cell cells[TPS65219_MAX_CELLS];
+	int nr_cells = 0;
 
 	tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
 	if (!tps)
@@ -365,9 +368,16 @@ static int tps65219_probe(struct i2c_client *client,
 		return ret;
 	}
 
-	ret = devm_mfd_add_devices(tps->dev, PLATFORM_DEVID_AUTO, tps65219_cells,
-				   ARRAY_SIZE(tps65219_cells), NULL, 0,
-				   NULL);
+	memcpy(&cells[nr_cells++], &tps65219_regulator_cell,
+	       sizeof(tps65219_regulator_cell));
+	pwr_button = of_property_read_bool(tps->dev->of_node, "power-button");
+	if (pwr_button)
+		memcpy(&cells[nr_cells++], &tps65219_pwrbutton_cell,
+		       sizeof(tps65219_pwrbutton_cell));
+
+	ret = devm_mfd_add_devices(tps->dev, PLATFORM_DEVID_AUTO, cells,
+				   nr_cells, NULL, 0,
+				   regmap_irq_get_domain(tps->irq_data));
 	if (ret) {
 		dev_err(tps->dev, "mfd_add_devices failed: %d\n", ret);
 		return ret;
-- 
2.17.1