diff options
Diffstat (limited to 'drivers/platform/x86/intel_bxtwc_tmu.c')
| -rw-r--r-- | drivers/platform/x86/intel_bxtwc_tmu.c | 150 |
1 files changed, 0 insertions, 150 deletions
diff --git a/drivers/platform/x86/intel_bxtwc_tmu.c b/drivers/platform/x86/intel_bxtwc_tmu.c deleted file mode 100644 index 951c105bafc1..000000000000 --- a/drivers/platform/x86/intel_bxtwc_tmu.c +++ /dev/null @@ -1,150 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * 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. - */ - -#include <linux/module.h> -#include <linux/mod_devicetable.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; - - /* 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"); |