linux-kernel - [PATCH 1/2] leds: pca963x: Add support for PCA962x chips

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Date:   Mon, 22 Aug 2022 08:18:37 +0200
From:   Mike Looijmans <mike.looijmans@...ic.nl>
To:     linux-leds@...r.kernel.org
Cc:     Mike Looijmans <mike.looijmans@...ic.nl>,
        Pavel Machek <pavel@....cz>, linux-kernel@...r.kernel.org,
        p.meerwald@...-electronic.com
Subject: [PATCH 1/2] leds: pca963x: Add support for PCA962x chips

The PCA962x family shares the same I2C register layout and functionality.
This adds support for the following chips:
PCA9623 4-channel
PCA9624 8-channel
PCA9622 16-channel
PCA9626 24-channel

Tested only the PCA9624. Other devices based on datasheet information.

Signed-off-by: Mike Looijmans <mike.looijmans@...ic.nl>
---

 drivers/leds/Kconfig        |  8 ++++----
 drivers/leds/leds-pca963x.c | 36 ++++++++++++++++++++++++++++++++++++
 2 files changed, 40 insertions(+), 4 deletions(-)

diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index 499d0f215a8b..9a99190c13af 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -497,13 +497,13 @@ config LEDS_PCA955X_GPIO
 
 
 config LEDS_PCA963X
-	tristate "LED support for PCA963x I2C chip"
+	tristate "LED support for PCA962x and PCA963x I2C chips"
 	depends on LEDS_CLASS
 	depends on I2C
 	help
-	  This option enables support for LEDs connected to the PCA963x
-	  LED driver chip accessed via the I2C bus. Supported
-	  devices include PCA9633 and PCA9634
+	  This option enables support for LEDs connected to the PCA96xx
+	  LED driver chip accessed via the I2C bus. Supported devices:
+	  PCA9622, PCA9623, PCA9624, PCA9626, PCA9633, PCA9634, PCA9635.
 
 config LEDS_WM831X_STATUS
 	tristate "LED support for status LEDs on WM831x PMICs"
diff --git a/drivers/leds/leds-pca963x.c b/drivers/leds/leds-pca963x.c
index 00aecd67e348..4d589624d192 100644
--- a/drivers/leds/leds-pca963x.c
+++ b/drivers/leds/leds-pca963x.c
@@ -48,6 +48,10 @@
 #define PCA963X_PWM_BASE	0x02
 
 enum pca963x_type {
+	pca9622,
+	pca9623,
+	pca9624,
+	pca9626,
 	pca9633,
 	pca9634,
 	pca9635,
@@ -62,6 +66,30 @@ struct pca963x_chipdef {
 };
 
 static struct pca963x_chipdef pca963x_chipdefs[] = {
+	[pca9622] = {
+		.grppwm		= 0x12,
+		.grpfreq	= 0x13,
+		.ledout_base	= 0x14,
+		.n_leds		= 16,
+	},
+	[pca9623] = {
+		.grppwm		= 0x6,
+		.grpfreq	= 0x7,
+		.ledout_base	= 0x8,
+		.n_leds		= 4,
+	},
+	[pca9624] = {
+		.grppwm		= 0xa,
+		.grpfreq	= 0xb,
+		.ledout_base	= 0xc,
+		.n_leds		= 8,
+	},
+	[pca9626] = {
+		.grppwm		= 0x1a,
+		.grpfreq	= 0x1b,
+		.ledout_base	= 0x1d,
+		.n_leds		= 24,
+	},
 	[pca9633] = {
 		.grppwm		= 0x6,
 		.grpfreq	= 0x7,
@@ -87,6 +115,10 @@ static struct pca963x_chipdef pca963x_chipdefs[] = {
 #define PCA963X_BLINK_PERIOD_MAX	10667
 
 static const struct i2c_device_id pca963x_id[] = {
+	{ "pca9622", pca9622 },
+	{ "pca9623", pca9623 },
+	{ "pca9624", pca9624 },
+	{ "pca9626", pca9626 },
 	{ "pca9632", pca9633 },
 	{ "pca9633", pca9633 },
 	{ "pca9634", pca9634 },
@@ -363,6 +395,10 @@ static int pca963x_register_leds(struct i2c_client *client,
 }
 
 static const struct of_device_id of_pca963x_match[] = {
+	{ .compatible = "nxp,pca9622", },
+	{ .compatible = "nxp,pca9623", },
+	{ .compatible = "nxp,pca9624", },
+	{ .compatible = "nxp,pca9626", },
 	{ .compatible = "nxp,pca9632", },
 	{ .compatible = "nxp,pca9633", },
 	{ .compatible = "nxp,pca9634", },
-- 
2.17.1