Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 3dfedb9d authored by Peter Meerwald's avatar Peter Meerwald Committed by Bryan Wu
Browse files

leds:pca963x: Add support for PCA9635 LED driver chip 



supports 16 PWM-controlled LEDs

Signed-off-by: default avatarPeter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: default avatarBryan Wu <cooloney@gmail.com>
parent 6522fe1c

drivers/leds/leds-pca963x.c

+13 −5
Original line number Diff line number Diff line
@@ -12,7 +12,7 @@ 
 * directory of this archive for more details.

 *

 * LED driver for the PCA9633 I2C LED driver (7-bit slave address 0x62)

 * LED driver for the PCA9634 I2C LED driver (7-bit slave address set by hw.)

 * LED driver for the PCA9634/5 I2C LED driver (7-bit slave address set by hw.)

 *

 * Note that hardware blinking violates the leds infrastructure driver

 * interface since the hardware only supports blinking all LEDs with the
@@ -52,6 +52,7 @@ 
enum pca963x_type {

	pca9633,

	pca9634,

	pca9635,

};



struct pca963x_chipdef {
@@ -74,6 +75,12 @@ static struct pca963x_chipdef pca963x_chipdefs[] = { 
		.ledout_base	= 0xc,

		.n_leds		= 8,

	},

	[pca9635] = {

		.grppwm		= 0x12,

		.grpfreq	= 0x13,

		.ledout_base	= 0x14,

		.n_leds		= 16,

	},

};



/* Total blink period in milliseconds */
@@ -84,6 +91,7 @@ static const struct i2c_device_id pca963x_id[] = { 
	{ "pca9632", pca9633 },

	{ "pca9633", pca9633 },

	{ "pca9634", pca9634 },

	{ "pca9635", pca9635 },

	{ }

};

MODULE_DEVICE_TABLE(i2c, pca963x_id);
@@ -107,7 +115,7 @@ struct pca963x_led { 
	struct work_struct work;

	enum led_brightness brightness;

	struct led_classdev led_cdev;

	int led_num; /* 0 .. 7 potentially */

	int led_num; /* 0 .. 15 potentially */

	enum pca963x_cmd cmd;

	char name[32];

	u8 gdc;
@@ -321,6 +329,7 @@ static const struct of_device_id of_pca963x_match[] = { 
	{ .compatible = "nxp,pca9632", },

	{ .compatible = "nxp,pca9633", },

	{ .compatible = "nxp,pca9634", },

	{ .compatible = "nxp,pca9635", },

	{},

};

#else
@@ -375,9 +384,8 @@ static int pca963x_probe(struct i2c_client *client, 
	pca963x_chip->leds = pca963x;



	/* Turn off LEDs by default*/

	i2c_smbus_write_byte_data(client, chip->ledout_base, 0x00);

	if (chip->n_leds > 4)

		i2c_smbus_write_byte_data(client, chip->ledout_base + 1, 0x00);

	for (i = 0; i < chip->n_leds / 4; i++)

		i2c_smbus_write_byte_data(client, chip->ledout_base + i, 0x00);



	for (i = 0; i < chip->n_leds; i++) {

		pca963x[i].led_num = i;