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

Commit 176c9995 authored by Bansidhar Gopalachari's avatar Bansidhar Gopalachari
Browse files

NFC: Implement LDO control for 8610 qrd skuaa devices 



control voltage regulators LD0 14 for 8610 qrd skuaa device from
nfc-nci device.

Change-Id: I65118b64b3330f033312de1889e7df4f6ad4fd27
Acked-by: default avatarUmesh Jagga <ujagga@qti.qualcomm.com>
Signed-off-by: default avatarBansidhar Gopalachari <bansid@codeaurora.org>
parent 2b4cb398

Documentation/devicetree/bindings/nfc/nfc-nci.txt

+16 −13
Original line number Diff line number Diff line
@@ -10,23 +10,26 @@ Required properties: 
- qcom,irq-gpio: specific gpio for read interrupt.

- qcom,clk-src: nfc clock source ("BBCLK2", "RFCLK3", "GPCLK", ...)

- qcom,clk-en-gpio: msm gpio clock,used ony if clock source is msm gpio

- vlogic-supply: LDO for power supply

- interrupt-parent: Should be phandle for the interrupt controller

                    that services interrupts for this device.

- interrupts: should contain the NFC interrupt. NFC has one read interrupt.

- qcom,clk-gpio: pmic gpio on which bbclk2 signal is coming.



Example:

LDO example:



	i2c@f9925000 { /* BLSP1 QUP3 */

	    nfc-nci@0e {

	i2c@f9925000 { /* BLSP-1 QUP-3 */

		nfc-nci@e {

			compatible = "qcom,nfc-nci";

			reg = <0x0e>;

		qcom,irq-gpio = <&msmgpio 21 0x00>;

		qcom,dis-gpio = <&msmgpio 20 0x00>;

		qcom,clk-src = "BBCLK2";

		qcom,clk-en-gpio = <&msmgpio 0 0x00>;

			qcom,irq-gpio = <&msmgpio 77 0x00>;

			qcom,dis-gpio = <&msmgpio 93 0x00>;

			qcom,clk-en-gpio = <&msmgpio 78 0x00>;

			qcom,clk-src = "GPCLK";

			interrupt-parent = <&msmgpio>;

		interrupts = <21 0>;

		qcom,clk-gpio = <&pm8226_gpios 3 0>;

			interrupts = <77 0>;

			qcom,clk-gpio = <&msmgpio 75 0x00>;

			vlogic-supply = <&pm8110_l14>;

		};

	};

drivers/nfc/nfc-nci.c

+13 −0
Original line number Diff line number Diff line
@@ -923,6 +923,19 @@ static int qca199x_probe(struct i2c_client *client, 
		goto err_misc_register;

	}



	regulators.regulator = regulator_get(&client->dev, regulators.name);

	if (IS_ERR(regulators.regulator)) {

		r = PTR_ERR(regulators.regulator);

		pr_err("regulator get of %s failed (%d)\n", regulators.name, r);

	} else {

		/* Enable the regulator */

		r = regulator_enable(regulators.regulator);

		if (r) {

			pr_err("vreg %s enable failed (%d)\n",

				regulators.name, r);

		}

	}



	logging_level = 0;

	/* request irq.  The irq is set whenever the chip has data available

	* for reading.  It is cleared when all data has been read.

drivers/nfc/nfc-nci.h

+6 −0
Original line number Diff line number Diff line
@@ -223,3 +223,9 @@ struct nfc_i2c_platform_data { 
	unsigned int	reg;

};

#endif

/* enable LDO */

struct vregs_info {

	const char * const name;

	struct regulator *regulator;

};

struct vregs_info regulators = {"vlogic", NULL};