On Fri July 24, 2020 5:55 AM, Randy Dunlap wrote:
> On 7/23/20 8:01 AM, Roy Im wrote:
> > Adds support for the Dialog DA7280 LRA/ERM Haptic Driver with multiple
> > mode and integrated waveform memory and wideband support.
> > It communicates via an I2C bus to the device.
> >
> > Reviewed-by: Jes Sorensen <Jes.Sorensen@xxxxxxxxx>.
> >
> > Signed-off-by: Roy Im <roy.im.opensource@xxxxxxxxxxx>
> >
> > ---
> >
> >
> > drivers/input/misc/Kconfig | 13 +
> > drivers/input/misc/Makefile | 1 +
> > drivers/input/misc/da7280.c | 1840
> > +++++++++++++++++++++++++++++++++++++++++++
> > 3 files changed, 1854 insertions(+)
> > create mode 100644 drivers/input/misc/da7280.c
> >
>
> > diff --git a/drivers/input/misc/da7280.c b/drivers/input/misc/da7280.c
> > new file mode 100644 index 0000000..6e3ead5
> > --- /dev/null
> > +++ b/drivers/input/misc/da7280.c
> > @@ -0,0 +1,1840 @@
> > +// SPDX-License-Identifier: GPL-2.0+
> > +/*
> > + * DA7280 Haptic device driver
> > + *
> > + * Copyright (c) 2020 Dialog Semiconductor.
> > + * Author: Roy Im <Roy.Im.Opensource@xxxxxxxxxxx> */
> > +
> > +#include <linux/err.h>
> > +#include <linux/i2c.h>
> > +#include <linux/input.h>
> > +#include <linux/interrupt.h>
> > +#include <linux/module.h>
> > +#include <linux/pwm.h>
> > +#include <linux/regmap.h>
> > +#include <linux/workqueue.h>
> > +#include <linux/uaccess.h>
> > +#include <linux/bitops.h>
> > +#include <linux/bitfield.h>
> > +
>
> ...
>
>
> > +static int da7280_haptic_set_pwm(struct da7280_haptic *haptics, bool
> > +enabled) {
> > + struct pwm_state state;
> > + u64 period_mag_multi;
> > + int error;
> > +
> > + if (!haptics->gain && enabled) {
> > + dev_err(haptics->dev,
> > + "Please set the gain first for the pwm mode\n");
> > + return -EINVAL;
> > + }
> > +
> > + pwm_get_state(haptics->pwm_dev, &state);
> > + state.enabled = enabled;
> > + if (enabled) {
> > + period_mag_multi = (u64)state.period * haptics->gain;
> > + period_mag_multi >>= MAX_MAGNITUDE_SHIFT;
> > +
> > + /* The interpretation of duty cycle depends on the acc_en,
> > + * it should be between 50% and 100% for acc_en = 0.
> > + * See datasheet 'PWM mode' section.
> > + */
>
> from coding-style.rst:
>
> /*
> * This is the preferred style for multi-line
> * comments in the Linux kernel source code.
> * Please use it consistently.
> *
> * Description: A column of asterisks on the left side,
> * with beginning and ending almost-blank lines.
> */
>
> (except for networking code)
>
> Please fix multiple locations.
OK, I will fix them.
>
>
> thanks.
> --
> ~Randy
Kind regards,
Roy
