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Input: max77693: Add support for Maxim 77843

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The Maxim 77843 haptic driver differs from 77693 by:
1. Setting the bias.
2. Different configuration register.
3. Not enabling the low-sys DAC.
4. Using same regmap for PMIC and haptic blocks.

Incorporate all differences into max77693 haptic driver so both devices
can be supported.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Krzysztof Kozlowski 2015-07-30 10:36:43 +09:00 committed by Mark Brown
parent 6eaa247a5b
commit 56bbc99e69
2 changed files with 48 additions and 6 deletions
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6
drivers/input/misc/Kconfig
View File

@ -167,12 +167,12 @@ config INPUT_M68K_BEEP
depends on M68K
config INPUT_MAX77693_HAPTIC
tristate "MAXIM MAX77693 haptic controller support"
depends on MFD_MAX77693 && PWM
tristate "MAXIM MAX77693/MAX77843 haptic controller support"
depends on (MFD_MAX77693 || MFD_MAX77843) && PWM
select INPUT_FF_MEMLESS
help
This option enables support for the haptic controller on
MAXIM MAX77693 chip.
MAXIM MAX77693 and MAX77843 chips.
To compile this driver as module, choose M here: the
module will be called max77693-haptic.

48
drivers/input/misc/max77693-haptic.c
View File

@ -1,8 +1,9 @@
/*
* MAXIM MAX77693 Haptic device driver
* MAXIM MAX77693/MAX77843 Haptic device driver
*
* Copyright (C) 2014 Samsung Electronics
* Copyright (C) 2014,2015 Samsung Electronics
* Jaewon Kim <jaewon02.kim@samsung.com>
* Krzysztof Kozlowski <k.kozlowski@samsung.com>
*
* This program is not provided / owned by Maxim Integrated Products.
*
@ -26,6 +27,7 @@
#include <linux/mfd/max77693.h>
#include <linux/mfd/max77693-common.h>
#include <linux/mfd/max77693-private.h>
#include <linux/mfd/max77843-private.h>
#define MAX_MAGNITUDE_SHIFT 16
@ -80,6 +82,26 @@ static int max77693_haptic_set_duty_cycle(struct max77693_haptic *haptic)
return 0;
}
static int max77843_haptic_bias(struct max77693_haptic *haptic, bool on)
{
int error;
if (haptic->dev_type != TYPE_MAX77843)
return 0;
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 max77693_haptic_configure(struct max77693_haptic *haptic,
bool enable)
{
@ -94,6 +116,12 @@ static int max77693_haptic_configure(struct max77693_haptic *haptic,
MAX77693_HAPTIC_PWM_DIVISOR_128);
config_reg = MAX77693_HAPTIC_REG_CONFIG2;
break;
case TYPE_MAX77843:
value = (haptic->type << MCONFIG_MODE_SHIFT) |
(enable << MCONFIG_MEN_SHIFT) |
MAX77693_HAPTIC_PWM_DIVISOR_128;
config_reg = MAX77843_HAP_REG_MCONFIG;
break;
default:
return -EINVAL;
}
@ -113,6 +141,9 @@ static int max77693_haptic_lowsys(struct max77693_haptic *haptic, bool enable)
{
int error;
if (haptic->dev_type != TYPE_MAX77693)
return 0;
error = regmap_update_bits(haptic->regmap_pmic,
MAX77693_PMIC_REG_LSCNFG,
MAX77693_PMIC_LOW_SYS_MASK,
@ -228,6 +259,10 @@ static int max77693_haptic_open(struct input_dev *dev)
struct max77693_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,
@ -250,6 +285,8 @@ static void max77693_haptic_close(struct input_dev *dev)
if (error)
dev_err(haptic->dev,
"failed to disable regulator: %d\n", error);
max77843_haptic_bias(haptic, false);
}
static int max77693_haptic_probe(struct platform_device *pdev)
@ -274,6 +311,9 @@ static int max77693_haptic_probe(struct platform_device *pdev)
case TYPE_MAX77693:
haptic->regmap_haptic = max77693->regmap_haptic;
break;
case TYPE_MAX77843:
haptic->regmap_haptic = max77693->regmap;
break;
default:
dev_err(&pdev->dev, "unsupported device type: %u\n",
haptic->dev_type);
@ -359,6 +399,7 @@ static SIMPLE_DEV_PM_OPS(max77693_haptic_pm_ops,
static const struct platform_device_id max77693_haptic_id[] = {
{ "max77693-haptic", TYPE_MAX77693 },
{ "max77843-haptic", TYPE_MAX77843 },
{},
};
MODULE_DEVICE_TABLE(platform, max77693_haptic_id);
@ -374,6 +415,7 @@ static struct platform_driver max77693_haptic_driver = {
module_platform_driver(max77693_haptic_driver);
MODULE_AUTHOR("Jaewon Kim <jaewon02.kim@samsung.com>");
MODULE_DESCRIPTION("MAXIM MAX77693 Haptic driver");
MODULE_AUTHOR("Krzysztof Kozlowski <k.kozlowski@samsung.com>");
MODULE_DESCRIPTION("MAXIM 77693/77843 Haptic driver");
MODULE_ALIAS("platform:max77693-haptic");
MODULE_LICENSE("GPL");