leds: pca963x: Add bindings to invert polarity (bb29b9cc) · Commits · 戴 / test

Documentation/devicetree/bindings/leds/pca963x.txt

+1 −0

Original line number	Diff line number	Diff line
		@@ -10,6 +10,7 @@ Optional properties:
		- nxp,period-scale : In some configurations, the chip blinks faster than expected.
		This parameter provides a scaling ratio (fixed point, decimal divided
		by 1000) to compensate, e.g. 1300=1.3x and 750=0.75x.
		- nxp,inverted-out: invert the polarity of the generated PWM

		Each led is represented as a sub-node of the nxp,pca963x device.

+15 −2

Original line number	Diff line number	Diff line
		@@ -342,6 +342,12 @@ pca963x_dt_init(struct i2c_client client, struct pca963x_chipdef chip)
		if (of_property_read_u32(np, "nxp,period-scale", &chip->scaling))
		chip->scaling = 1000;

		/* default to non-inverted output, unless inverted is specified */
		if (of_property_read_bool(np, "nxp,inverted-out"))
		pdata->dir = PCA963X_INVERTED;
		else
		pdata->dir = PCA963X_NORMAL;

		return pdata;
		}

		@@ -452,11 +458,18 @@ static int pca963x_probe(struct i2c_client *client,
		i2c_smbus_write_byte_data(client, PCA963X_MODE1, BIT(4));

		if (pdata) {
		u8 mode2 = i2c_smbus_read_byte_data(pca963x->chip->client,
		PCA963X_MODE2);
		/* Configure output: open-drain or totem pole (push-pull) */
		if (pdata->outdrv == PCA963X_OPEN_DRAIN)
		i2c_smbus_write_byte_data(client, PCA963X_MODE2, 0x01);
		mode2 \|= 0x01;
		else
		i2c_smbus_write_byte_data(client, PCA963X_MODE2, 0x05);
		mode2 \|= 0x05;
		/* Configure direction: normal or inverted */
		if (pdata->dir == PCA963X_INVERTED)
		mode2 \|= 0x10;
		i2c_smbus_write_byte_data(pca963x->chip->client, PCA963X_MODE2,
		mode2);
		}

		return 0;

+6 −0

Original line number	Diff line number	Diff line
		@@ -33,10 +33,16 @@ enum pca963x_blink_type {
		PCA963X_HW_BLINK,
		};

		enum pca963x_direction {
		PCA963X_NORMAL,
		PCA963X_INVERTED,
		};

		struct pca963x_platform_data {
		struct led_platform_data leds;
		enum pca963x_outdrv outdrv;
		enum pca963x_blink_type blink_type;
		enum pca963x_direction dir;
		};

		#endif /* __LINUX_PCA963X_H*/