From e09b41010ba33a20a87472ee821fa407a5b8da36 Mon Sep 17 00:00:00 2001 From: José Pekkarinen Date: Mon, 11 Apr 2016 10:41:07 +0300 Subject: These changes are the raw update to linux-4.4.6-rt14. Kernel sources are taken from kernel.org, and rt patch from the rt wiki download page. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen --- kernel/drivers/input/misc/max77843-haptic.c | 358 ---------------------------- 1 file changed, 358 deletions(-) delete mode 100644 kernel/drivers/input/misc/max77843-haptic.c (limited to 'kernel/drivers/input/misc/max77843-haptic.c') diff --git a/kernel/drivers/input/misc/max77843-haptic.c b/kernel/drivers/input/misc/max77843-haptic.c deleted file mode 100644 index dccbb465a..000000000 --- a/kernel/drivers/input/misc/max77843-haptic.c +++ /dev/null @@ -1,358 +0,0 @@ -/* - * MAXIM MAX77693 Haptic device driver - * - * Copyright (C) 2015 Samsung Electronics - * Author: Jaewon Kim - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#define MAX_MAGNITUDE_SHIFT 16 - -enum max77843_haptic_motor_type { - MAX77843_HAPTIC_ERM = 0, - MAX77843_HAPTIC_LRA, -}; - -enum max77843_haptic_pwm_divisor { - MAX77843_HAPTIC_PWM_DIVISOR_32 = 0, - MAX77843_HAPTIC_PWM_DIVISOR_64, - MAX77843_HAPTIC_PWM_DIVISOR_128, - MAX77843_HAPTIC_PWM_DIVISOR_256, -}; - -struct max77843_haptic { - struct regmap *regmap_haptic; - struct device *dev; - struct input_dev *input_dev; - struct pwm_device *pwm_dev; - struct regulator *motor_reg; - struct work_struct work; - struct mutex mutex; - - unsigned int magnitude; - unsigned int pwm_duty; - - bool active; - bool suspended; - - enum max77843_haptic_motor_type type; - enum max77843_haptic_pwm_divisor pwm_divisor; -}; - -static int max77843_haptic_set_duty_cycle(struct max77843_haptic *haptic) -{ - int delta = (haptic->pwm_dev->period + haptic->pwm_duty) / 2; - int error; - - error = pwm_config(haptic->pwm_dev, delta, haptic->pwm_dev->period); - if (error) { - dev_err(haptic->dev, "failed to configure pwm: %d\n", error); - return error; - } - - return 0; -} - -static int max77843_haptic_bias(struct max77843_haptic *haptic, bool on) -{ - int error; - - error = regmap_update_bits(haptic->regmap_haptic, - MAX77843_SYS_REG_MAINCTRL1, - MAX77843_MAINCTRL1_BIASEN_MASK, - on << MAINCTRL1_BIASEN_SHIFT); - if (error) { - dev_err(haptic->dev, "failed to %s bias: %d\n", - on ? "enable" : "disable", error); - return error; - } - - return 0; -} - -static int max77843_haptic_config(struct max77843_haptic *haptic, bool enable) -{ - unsigned int value; - int error; - - value = (haptic->type << MCONFIG_MODE_SHIFT) | - (enable << MCONFIG_MEN_SHIFT) | - (haptic->pwm_divisor << MCONFIG_PDIV_SHIFT); - - error = regmap_write(haptic->regmap_haptic, - MAX77843_HAP_REG_MCONFIG, value); - if (error) { - dev_err(haptic->dev, - "failed to update haptic config: %d\n", error); - return error; - } - - return 0; -} - -static int max77843_haptic_enable(struct max77843_haptic *haptic) -{ - int error; - - if (haptic->active) - return 0; - - error = pwm_enable(haptic->pwm_dev); - if (error) { - dev_err(haptic->dev, - "failed to enable pwm device: %d\n", error); - return error; - } - - error = max77843_haptic_config(haptic, true); - if (error) - goto err_config; - - haptic->active = true; - - return 0; - -err_config: - pwm_disable(haptic->pwm_dev); - - return error; -} - -static int max77843_haptic_disable(struct max77843_haptic *haptic) -{ - int error; - - if (!haptic->active) - return 0; - - error = max77843_haptic_config(haptic, false); - if (error) - return error; - - pwm_disable(haptic->pwm_dev); - - haptic->active = false; - - return 0; -} - -static void max77843_haptic_play_work(struct work_struct *work) -{ - struct max77843_haptic *haptic = - container_of(work, struct max77843_haptic, work); - int error; - - mutex_lock(&haptic->mutex); - - if (haptic->suspended) - goto out_unlock; - - if (haptic->magnitude) { - error = max77843_haptic_set_duty_cycle(haptic); - if (error) { - dev_err(haptic->dev, - "failed to set duty cycle: %d\n", error); - goto out_unlock; - } - - error = max77843_haptic_enable(haptic); - if (error) - dev_err(haptic->dev, - "cannot enable haptic: %d\n", error); - } else { - error = max77843_haptic_disable(haptic); - if (error) - dev_err(haptic->dev, - "cannot disable haptic: %d\n", error); - } - -out_unlock: - mutex_unlock(&haptic->mutex); -} - -static int max77843_haptic_play_effect(struct input_dev *dev, void *data, - struct ff_effect *effect) -{ - struct max77843_haptic *haptic = input_get_drvdata(dev); - u64 period_mag_multi; - - haptic->magnitude = effect->u.rumble.strong_magnitude; - if (!haptic->magnitude) - haptic->magnitude = effect->u.rumble.weak_magnitude; - - period_mag_multi = (u64)haptic->pwm_dev->period * haptic->magnitude; - haptic->pwm_duty = (unsigned int)(period_mag_multi >> - MAX_MAGNITUDE_SHIFT); - - schedule_work(&haptic->work); - - return 0; -} - -static int max77843_haptic_open(struct input_dev *dev) -{ - struct max77843_haptic *haptic = input_get_drvdata(dev); - int error; - - error = max77843_haptic_bias(haptic, true); - if (error) - return error; - - error = regulator_enable(haptic->motor_reg); - if (error) { - dev_err(haptic->dev, - "failed to enable regulator: %d\n", error); - return error; - } - - return 0; -} - -static void max77843_haptic_close(struct input_dev *dev) -{ - struct max77843_haptic *haptic = input_get_drvdata(dev); - int error; - - cancel_work_sync(&haptic->work); - max77843_haptic_disable(haptic); - - error = regulator_disable(haptic->motor_reg); - if (error) - dev_err(haptic->dev, - "failed to disable regulator: %d\n", error); - - max77843_haptic_bias(haptic, false); -} - -static int max77843_haptic_probe(struct platform_device *pdev) -{ - struct max77843 *max77843 = dev_get_drvdata(pdev->dev.parent); - struct max77843_haptic *haptic; - int error; - - haptic = devm_kzalloc(&pdev->dev, sizeof(*haptic), GFP_KERNEL); - if (!haptic) - return -ENOMEM; - - haptic->regmap_haptic = max77843->regmap; - haptic->dev = &pdev->dev; - haptic->type = MAX77843_HAPTIC_LRA; - haptic->pwm_divisor = MAX77843_HAPTIC_PWM_DIVISOR_128; - - INIT_WORK(&haptic->work, max77843_haptic_play_work); - mutex_init(&haptic->mutex); - - haptic->pwm_dev = devm_pwm_get(&pdev->dev, NULL); - if (IS_ERR(haptic->pwm_dev)) { - dev_err(&pdev->dev, "failed to get pwm device\n"); - return PTR_ERR(haptic->pwm_dev); - } - - haptic->motor_reg = devm_regulator_get_exclusive(&pdev->dev, "haptic"); - if (IS_ERR(haptic->motor_reg)) { - dev_err(&pdev->dev, "failed to get regulator\n"); - return PTR_ERR(haptic->motor_reg); - } - - haptic->input_dev = devm_input_allocate_device(&pdev->dev); - if (!haptic->input_dev) { - dev_err(&pdev->dev, "failed to allocate input device\n"); - return -ENOMEM; - } - - haptic->input_dev->name = "max77843-haptic"; - haptic->input_dev->id.version = 1; - haptic->input_dev->dev.parent = &pdev->dev; - haptic->input_dev->open = max77843_haptic_open; - haptic->input_dev->close = max77843_haptic_close; - input_set_drvdata(haptic->input_dev, haptic); - input_set_capability(haptic->input_dev, EV_FF, FF_RUMBLE); - - error = input_ff_create_memless(haptic->input_dev, NULL, - max77843_haptic_play_effect); - if (error) { - dev_err(&pdev->dev, "failed to create force-feedback\n"); - return error; - } - - error = input_register_device(haptic->input_dev); - if (error) { - dev_err(&pdev->dev, "failed to register input device\n"); - return error; - } - - platform_set_drvdata(pdev, haptic); - - return 0; -} - -static int __maybe_unused max77843_haptic_suspend(struct device *dev) -{ - struct platform_device *pdev = to_platform_device(dev); - struct max77843_haptic *haptic = platform_get_drvdata(pdev); - int error; - - error = mutex_lock_interruptible(&haptic->mutex); - if (error) - return error; - - max77843_haptic_disable(haptic); - - haptic->suspended = true; - - mutex_unlock(&haptic->mutex); - - return 0; -} - -static int __maybe_unused max77843_haptic_resume(struct device *dev) -{ - struct platform_device *pdev = to_platform_device(dev); - struct max77843_haptic *haptic = platform_get_drvdata(pdev); - unsigned int magnitude; - - mutex_lock(&haptic->mutex); - - haptic->suspended = false; - - magnitude = ACCESS_ONCE(haptic->magnitude); - if (magnitude) - max77843_haptic_enable(haptic); - - mutex_unlock(&haptic->mutex); - - return 0; -} - -static SIMPLE_DEV_PM_OPS(max77843_haptic_pm_ops, - max77843_haptic_suspend, max77843_haptic_resume); - -static struct platform_driver max77843_haptic_driver = { - .driver = { - .name = "max77843-haptic", - .pm = &max77843_haptic_pm_ops, - }, - .probe = max77843_haptic_probe, -}; -module_platform_driver(max77843_haptic_driver); - -MODULE_AUTHOR("Jaewon Kim "); -MODULE_DESCRIPTION("MAXIM MAX77843 Haptic driver"); -MODULE_LICENSE("GPL"); -- cgit 1.2.3-korg