platform/x86: Add Whiskey Cove PMIC TMU support (957ae509) · Commits · e / devices / android_kernel_oneplus_sm8150

drivers/mfd/intel_soc_pmic_bxtwc.c

+38 −0

Original line number	Diff line number	Diff line
		@@ -42,6 +42,7 @@
		#define BXTWC_GPIOIRQ0 0x4E0B
		#define BXTWC_GPIOIRQ1 0x4E0C
		#define BXTWC_CRITIRQ 0x4E0D
		#define BXTWC_TMUIRQ 0x4FB6

		/* Interrupt MASK Registers */
		#define BXTWC_MIRQLVL1 0x4E0E
		@@ -59,6 +60,7 @@
		#define BXTWC_MGPIO0IRQ 0x4E19
		#define BXTWC_MGPIO1IRQ 0x4E1A
		#define BXTWC_MCRITIRQ 0x4E1B
		#define BXTWC_MTMUIRQ 0x4FB7

		/* Whiskey Cove PMIC share same ACPI ID between different platforms */
		#define BROXTON_PMIC_WC_HRV 4
		@@ -91,6 +93,7 @@ enum bxtwc_irqs_level2 {
		BXTWC_GPIO0_IRQ,
		BXTWC_GPIO1_IRQ,
		BXTWC_CRIT_IRQ,
		BXTWC_TMU_IRQ,
		};

		static const struct regmap_irq bxtwc_regmap_irqs[] = {
		@@ -118,6 +121,10 @@ static const struct regmap_irq bxtwc_regmap_irqs_level2[] = {
		REGMAP_IRQ_REG(BXTWC_CRIT_IRQ, 9, 0x03),
		};

		static const struct regmap_irq bxtwc_regmap_irqs_tmu[] = {
		REGMAP_IRQ_REG(BXTWC_TMU_IRQ, 0, 0x06),
		};

		static struct regmap_irq_chip bxtwc_regmap_irq_chip = {
		.name = "bxtwc_irq_chip",
		.status_base = BXTWC_IRQLVL1,
		@@ -136,6 +143,15 @@ static struct regmap_irq_chip bxtwc_regmap_irq_chip_level2 = {
		.num_regs = 10,
		};

		static struct regmap_irq_chip bxtwc_regmap_irq_chip_tmu = {
		.name = "bxtwc_irq_chip_tmu",
		.status_base = BXTWC_TMUIRQ,
		.mask_base = BXTWC_MTMUIRQ,
		.irqs = bxtwc_regmap_irqs_tmu,
		.num_irqs = ARRAY_SIZE(bxtwc_regmap_irqs_tmu),
		.num_regs = 1,
		};

		static struct resource gpio_resources[] = {
		DEFINE_RES_IRQ_NAMED(BXTWC_GPIO0_IRQ, "GPIO0"),
		DEFINE_RES_IRQ_NAMED(BXTWC_GPIO1_IRQ, "GPIO1"),
		@@ -164,6 +180,10 @@ static struct resource bcu_resources[] = {
		DEFINE_RES_IRQ_NAMED(BXTWC_BCU_IRQ, "BCU"),
		};

		static struct resource tmu_resources[] = {
		DEFINE_RES_IRQ_NAMED(BXTWC_TMU_IRQ, "TMU"),
		};

		static struct mfd_cell bxt_wc_dev[] = {
		{
		.name = "bxt_wcove_gpadc",
		@@ -190,6 +210,12 @@ static struct mfd_cell bxt_wc_dev[] = {
		.num_resources = ARRAY_SIZE(bcu_resources),
		.resources = bcu_resources,
		},
		{
		.name = "bxt_wcove_tmu",
		.num_resources = ARRAY_SIZE(tmu_resources),
		.resources = tmu_resources,
		},

		{
		.name = "bxt_wcove_gpio",
		.num_resources = ARRAY_SIZE(gpio_resources),
		@@ -400,6 +426,15 @@ static int bxtwc_probe(struct platform_device *pdev)
		goto err_irq_chip_level2;
		}

		ret = regmap_add_irq_chip(pmic->regmap, pmic->irq,
		IRQF_ONESHOT \| IRQF_SHARED,
		0, &bxtwc_regmap_irq_chip_tmu,
		&pmic->irq_chip_data_tmu);
		if (ret) {
		dev_err(&pdev->dev, "Failed to add TMU IRQ chip\n");
		goto err_irq_chip_tmu;
		}

		ret = mfd_add_devices(&pdev->dev, PLATFORM_DEVID_NONE, bxt_wc_dev,
		ARRAY_SIZE(bxt_wc_dev), NULL, 0,
		NULL);
		@@ -429,6 +464,8 @@ static int bxtwc_probe(struct platform_device *pdev)
		err_sysfs:
		mfd_remove_devices(&pdev->dev);
		err_mfd:
		regmap_del_irq_chip(pmic->irq, pmic->irq_chip_data_tmu);
		err_irq_chip_tmu:
		regmap_del_irq_chip(pmic->irq, pmic->irq_chip_data_level2);
		err_irq_chip_level2:
		regmap_del_irq_chip(pmic->irq, pmic->irq_chip_data);
		@@ -444,6 +481,7 @@ static int bxtwc_remove(struct platform_device *pdev)
		mfd_remove_devices(&pdev->dev);
		regmap_del_irq_chip(pmic->irq, pmic->irq_chip_data);
		regmap_del_irq_chip(pmic->irq, pmic->irq_chip_data_level2);
		regmap_del_irq_chip(pmic->irq, pmic->irq_chip_data_tmu);

		return 0;
		}

drivers/platform/x86/Kconfig

+9 −0

Original line number	Diff line number	Diff line
		@@ -1017,6 +1017,15 @@ config INTEL_PMC_IPC
		The PMC is an ARC processor which defines IPC commands for communication
		with other entities in the CPU.

		config INTEL_BXTWC_PMIC_TMU
		tristate "Intel BXT Whiskey Cove TMU Driver"
		depends on REGMAP
		depends on INTEL_SOC_PMIC && INTEL_PMC_IPC
		---help---
		Select this driver to use Intel BXT Whiskey Cove PMIC TMU feature.
		This driver enables the alarm wakeup functionality in the TMU unit
		of Whiskey Cove PMIC.

		config SURFACE_PRO3_BUTTON
		tristate "Power/home/volume buttons driver for Microsoft Surface Pro 3/4 tablet"
		depends on ACPI && INPUT

drivers/platform/x86/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -69,6 +69,7 @@ obj-$(CONFIG_INTEL_PMC_IPC) += intel_pmc_ipc.o
		obj-$(CONFIG_SURFACE_PRO3_BUTTON) += surfacepro3_button.o
		obj-$(CONFIG_SURFACE_3_BUTTON) += surface3_button.o
		obj-$(CONFIG_INTEL_PUNIT_IPC) += intel_punit_ipc.o
		obj-$(CONFIG_INTEL_BXTWC_PMIC_TMU) += intel_bxtwc_tmu.o
		obj-$(CONFIG_INTEL_TELEMETRY) += intel_telemetry_core.o \
		intel_telemetry_pltdrv.o \
		intel_telemetry_debugfs.o

drivers/platform/x86/intel_bxtwc_tmu.c

0 → 100644

+162 −0

Original line number	Diff line number	Diff line
		/*
		* intel_bxtwc_tmu.c - Intel BXT Whiskey Cove PMIC TMU driver
		*
		* Copyright (C) 2016 Intel Corporation. All rights reserved.
		*
		* This driver adds TMU (Time Management Unit) support for Intel BXT platform.
		* It enables the alarm wake-up functionality in the TMU unit of Whiskey Cove
		* PMIC.
		*
		* This program is free software; you can redistribute it and/or
		* modify it under the terms of the GNU General Public License version
		* 2 as published by the Free Software Foundation.
		*
		* This program is distributed in the hope that it will be useful,
		* but WITHOUT ANY WARRANTY; without even the implied warranty of
		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		* GNU General Public License for more details.
		*
		*/

		#include <linux/module.h>
		#include <linux/interrupt.h>
		#include <linux/platform_device.h>
		#include <linux/mfd/intel_soc_pmic.h>

		#define BXTWC_TMUIRQ 0x4fb6
		#define BXTWC_MIRQLVL1 0x4e0e
		#define BXTWC_MTMUIRQ_REG 0x4fb7
		#define BXTWC_MIRQLVL1_MTMU BIT(1)
		#define BXTWC_TMU_WK_ALRM BIT(1)
		#define BXTWC_TMU_SYS_ALRM BIT(2)
		#define BXTWC_TMU_ALRM_MASK (BXTWC_TMU_WK_ALRM \| BXTWC_TMU_SYS_ALRM)
		#define BXTWC_TMU_ALRM_IRQ (BXTWC_TMU_WK_ALRM \| BXTWC_TMU_SYS_ALRM)

		struct wcove_tmu {
		int irq;
		struct device *dev;
		struct regmap *regmap;
		};

		static irqreturn_t bxt_wcove_tmu_irq_handler(int irq, void *data)
		{
		struct wcove_tmu *wctmu = data;
		unsigned int tmu_irq;

		/* Read TMU interrupt reg */
		regmap_read(wctmu->regmap, BXTWC_TMUIRQ, &tmu_irq);
		if (tmu_irq & BXTWC_TMU_ALRM_IRQ) {
		/* clear TMU irq */
		regmap_write(wctmu->regmap, BXTWC_TMUIRQ, tmu_irq);
		return IRQ_HANDLED;
		}
		return IRQ_NONE;
		}

		static int bxt_wcove_tmu_probe(struct platform_device *pdev)
		{
		struct intel_soc_pmic *pmic = dev_get_drvdata(pdev->dev.parent);
		struct regmap_irq_chip_data *regmap_irq_chip;
		struct wcove_tmu *wctmu;
		int ret, virq, irq;

		wctmu = devm_kzalloc(&pdev->dev, sizeof(*wctmu), GFP_KERNEL);
		if (!wctmu)
		return -ENOMEM;

		wctmu->dev = &pdev->dev;
		wctmu->regmap = pmic->regmap;

		irq = platform_get_irq(pdev, 0);

		if (irq < 0) {
		dev_err(&pdev->dev, "invalid irq %d\n", irq);
		return irq;
		}

		regmap_irq_chip = pmic->irq_chip_data_tmu;
		virq = regmap_irq_get_virq(regmap_irq_chip, irq);
		if (virq < 0) {
		dev_err(&pdev->dev,
		"failed to get virtual interrupt=%d\n", irq);
		return virq;
		}

		ret = devm_request_threaded_irq(&pdev->dev, virq,
		NULL, bxt_wcove_tmu_irq_handler,
		IRQF_ONESHOT, "bxt_wcove_tmu", wctmu);
		if (ret) {
		dev_err(&pdev->dev, "request irq failed: %d,virq: %d\n",
		ret, virq);
		return ret;
		}
		wctmu->irq = virq;

		/* Enable TMU interrupts */
		regmap_update_bits(wctmu->regmap, BXTWC_MIRQLVL1,
		BXTWC_MIRQLVL1_MTMU, 0);

		/* Unmask TMU second level Wake & System alarm */
		regmap_update_bits(wctmu->regmap, BXTWC_MTMUIRQ_REG,
		BXTWC_TMU_ALRM_MASK, 0);

		platform_set_drvdata(pdev, wctmu);
		return 0;
		}

		static int bxt_wcove_tmu_remove(struct platform_device *pdev)
		{
		struct wcove_tmu *wctmu = platform_get_drvdata(pdev);
		unsigned int val;

		/* Mask TMU interrupts */
		regmap_read(wctmu->regmap, BXTWC_MIRQLVL1, &val);
		regmap_write(wctmu->regmap, BXTWC_MIRQLVL1,
		val \| BXTWC_MIRQLVL1_MTMU);
		regmap_read(wctmu->regmap, BXTWC_MTMUIRQ_REG, &val);
		regmap_write(wctmu->regmap, BXTWC_MTMUIRQ_REG,
		val \| BXTWC_TMU_ALRM_MASK);
		return 0;
		}

		#ifdef CONFIG_PM_SLEEP
		static int bxtwc_tmu_suspend(struct device *dev)
		{
		struct wcove_tmu *wctmu = dev_get_drvdata(dev);

		enable_irq_wake(wctmu->irq);
		return 0;
		}

		static int bxtwc_tmu_resume(struct device *dev)
		{
		struct wcove_tmu *wctmu = dev_get_drvdata(dev);

		disable_irq_wake(wctmu->irq);
		return 0;
		}
		#endif

		static SIMPLE_DEV_PM_OPS(bxtwc_tmu_pm_ops, bxtwc_tmu_suspend, bxtwc_tmu_resume);

		static const struct platform_device_id bxt_wcove_tmu_id_table[] = {
		{ .name = "bxt_wcove_tmu" },
		{},
		};
		MODULE_DEVICE_TABLE(platform, bxt_wcove_tmu_id_table);

		static struct platform_driver bxt_wcove_tmu_driver = {
		.probe = bxt_wcove_tmu_probe,
		.remove = bxt_wcove_tmu_remove,
		.driver = {
		.name = "bxt_wcove_tmu",
		.pm = &bxtwc_tmu_pm_ops,
		},
		.id_table = bxt_wcove_tmu_id_table,
		};

		module_platform_driver(bxt_wcove_tmu_driver);

		MODULE_LICENSE("GPL v2");
		MODULE_AUTHOR("Nilesh Bacchewar <nilesh.bacchewar@intel.com>");
		MODULE_DESCRIPTION("BXT Whiskey Cove TMU Driver");

include/linux/mfd/intel_soc_pmic.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -26,6 +26,7 @@ struct intel_soc_pmic {
		struct regmap *regmap;
		struct regmap_irq_chip_data *irq_chip_data;
		struct regmap_irq_chip_data *irq_chip_data_level2;
		struct regmap_irq_chip_data *irq_chip_data_tmu;
		struct device *dev;
		};