Merge "soc: qcom: eud: pet hw when ldo24 is turned on or off" (1141a3e5) · Commits · e / devices / android_kernel_fairphone_FP3

Documentation/devicetree/bindings/soc/qcom/qcom,msm-eud.txt

+4 −0

Original line number	Diff line number	Diff line
		@@ -14,6 +14,9 @@ Required properties:
		Documentation/devicetree/bindings/clock/clock-bindings.txt
		- clock-names: Names of the clocks in 1-1 correspondence with
		the "clocks" property.
		- <supply-name>-supply: phandle to the regulator device tree node
		Required "supply-name" examples are:
		"vdda33" : 3.3v supply to eud.

		Driver notifies clients via extcon for VBUS spoof attach/detach
		and charger enable/disable events. Clients registered for these
		@@ -29,6 +32,7 @@ An example for EUD device node:
		reg-names = "eud_base";
		clocks = <&clock_gcc GCC_USB_PHY_CFG_AHB2PHY_CLK>;
		clock-names = "cfg_ahb_clk";
		vdda33-supply = <&pm8998_l24>;
		};

		An example for EUD extcon client:

arch/arm64/boot/dts/qcom/sdm845-interposer-sdm670-cdp.dtsi

+4 −0

Original line number	Diff line number	Diff line
		@@ -37,3 +37,7 @@
		&pcie0 {
		status = "disabled";
		};

		&eud {
		vdda33-supply = <&pm660l_l7>;
		};

arch/arm64/boot/dts/qcom/sdm845-interposer-sdm670-mtp.dtsi

+4 −0

Original line number	Diff line number	Diff line
		@@ -42,3 +42,7 @@
		&pcie0 {
		status = "disabled";
		};

		&eud {
		vdda33-supply = <&pm660l_l7>;
		};

arch/arm64/boot/dts/qcom/sdm845.dtsi

+1 −0

Original line number	Diff line number	Diff line
		@@ -1647,6 +1647,7 @@
		reg-names = "eud_base";
		clocks = <&clock_gcc GCC_USB_PHY_CFG_AHB2PHY_CLK>;
		clock-names = "cfg_ahb_clk";
		vdda33-supply = <&pm8998_l24>;
		status = "ok";
		};

drivers/soc/qcom/eud.c

+62 −0

Original line number	Diff line number	Diff line
		@@ -29,6 +29,9 @@
		#include <linux/power_supply.h>
		#include <linux/clk.h>
		#include <linux/of.h>
		#include <linux/regulator/consumer.h>
		#include <linux/regulator/driver.h>
		#include <linux/regulator/machine.h>

		#define EUD_ENABLE_CMD 1
		#define EUD_DISABLE_CMD 0
		@@ -74,6 +77,10 @@ struct eud_chip {
		struct work_struct eud_work;
		struct power_supply *batt_psy;
		struct clk *cfg_ahb_clk;

		/* regulator and notifier chain for it */
		struct regulator *vdda33;
		struct notifier_block vdda33_nb;
		};

		static const unsigned int eud_extcon_cable[] = {
		@@ -487,12 +494,47 @@ static irqreturn_t handle_eud_irq(int irq, void *data)
		return IRQ_HANDLED;
		}

		static int vdda33_notifier_block_cb(struct notifier_block *nb,
		unsigned long event, void *ptr)
		{
		struct eud_chip *chip = container_of(nb, struct eud_chip, vdda33_nb);
		int attach_det = 0;

		switch (event) {
		case REGULATOR_EVENT_ENABLE:
		attach_det = 1;
		/* fall throuhg */
		case REGULATOR_EVENT_DISABLE:
		clk_prepare_enable(chip->cfg_ahb_clk);

		/* eud does not retain interrupt mask when ldo24
		* is turned off. Set the interrupt mask when
		* ldo24 is turned on
		*/
		if (attach_det)
		writel_relaxed(EUD_INT_VBUS \| EUD_INT_CHGR,
		chip->eud_reg_base + EUD_REG_INT1_EN_MASK);
		writel_relaxed(attach_det,
		chip->eud_reg_base + EUD_REG_SW_ATTACH_DET);
		clk_disable_unprepare(chip->cfg_ahb_clk);

		dev_dbg(chip->dev, "%s(): %s\n", __func__,
		attach_det ? "enable" : "disable");
		break;
		default:
		break;
		}

		return NOTIFY_OK;
		}

		static int msm_eud_probe(struct platform_device *pdev)
		{
		struct eud_chip *chip;
		struct uart_port *port;
		struct resource *res;
		int ret;
		int pet;

		chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL);
		if (!chip) {
		@@ -575,6 +617,24 @@ static int msm_eud_probe(struct platform_device *pdev)

		eud_private = pdev;

		chip->vdda33 = devm_regulator_get(&pdev->dev, "vdda33");
		if (IS_ERR(chip->vdda33)) {
		dev_err(chip->dev, "%s: failed to get eud 3p1 regulator\n",
		__func__);
		return PTR_ERR(chip->vdda33);
		}
		chip->vdda33_nb.notifier_call = vdda33_notifier_block_cb;
		regulator_register_notifier(chip->vdda33, &chip->vdda33_nb);

		clk_prepare_enable(chip->cfg_ahb_clk);

		pet = regulator_is_enabled(chip->vdda33) ? 1 : 0;
		writel_relaxed(pet, chip->eud_reg_base + EUD_REG_SW_ATTACH_DET);

		dev_dbg(chip->dev, "%s:%s pet\n", __func__, pet ? "Attach" : "Detach");

		clk_disable_unprepare(chip->cfg_ahb_clk);

		/* Enable EUD */
		if (enable)
		enable_eud(pdev);
		@@ -587,6 +647,8 @@ static int msm_eud_remove(struct platform_device *pdev)
		struct eud_chip *chip = platform_get_drvdata(pdev);
		struct uart_port *port = &chip->port;

		regulator_unregister_notifier(chip->vdda33, &chip->vdda33_nb);

		uart_remove_one_port(&eud_uart_driver, port);
		device_init_wakeup(chip->dev, false);