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Input: pm8xxx-vib - parametrize the driver

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In order to prepare this driver to support other vibrators of the same
kind, move some hardcoded values to a structure holding register
parameters (address, mask, shit of the control register).

Signed-off-by: Damien Riegel <damien.riegel@savoirfairelinux.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Damien Riegel 2017-04-04 16:25:57 -07:00 committed by Dmitry Torokhov
parent f6bcc91ba6
commit 2de3b7048d
1 changed files with 33 additions and 16 deletions
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49
drivers/input/misc/pm8xxx-vibrator.c
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@ -14,36 +14,47 @@
#include <linux/input.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#define VIB_DRV 0x4A
#define VIB_DRV_SEL_MASK 0xf8
#define VIB_DRV_SEL_SHIFT 0x03
#define VIB_DRV_EN_MANUAL_MASK 0xfc
#define VIB_MAX_LEVEL_mV (3100)
#define VIB_MIN_LEVEL_mV (1200)
#define VIB_MAX_LEVELS (VIB_MAX_LEVEL_mV - VIB_MIN_LEVEL_mV)
#define MAX_FF_SPEED 0xff
struct pm8xxx_regs {
unsigned int drv_addr;
unsigned int drv_mask;
unsigned int drv_shift;
unsigned int drv_en_manual_mask;
};
static const struct pm8xxx_regs pm8058_regs = {
.drv_addr = 0x4A,
.drv_mask = 0xf8,
.drv_shift = 3,
.drv_en_manual_mask = 0xfc,
};
/**
* struct pm8xxx_vib - structure to hold vibrator data
* @vib_input_dev: input device supporting force feedback
* @work: work structure to set the vibration parameters
* @regmap: regmap for register read/write
* @regs: registers' info
* @speed: speed of vibration set from userland
* @active: state of vibrator
* @level: level of vibration to set in the chip
* @reg_vib_drv: VIB_DRV register value
* @reg_vib_drv: regs->drv_addr register value
*/
struct pm8xxx_vib {
struct input_dev *vib_input_dev;
struct work_struct work;
struct regmap *regmap;
const struct pm8xxx_regs *regs;
int speed;
int level;
bool active;
@ -59,13 +70,14 @@ static int pm8xxx_vib_set(struct pm8xxx_vib *vib, bool on)
{
int rc;
unsigned int val = vib->reg_vib_drv;
const struct pm8xxx_regs *regs = vib->regs;
if (on)
val |= ((vib->level << VIB_DRV_SEL_SHIFT) & VIB_DRV_SEL_MASK);
val |= (vib->level << regs->drv_shift) & regs->drv_mask;
else
val &= ~VIB_DRV_SEL_MASK;
val &= ~regs->drv_mask;
rc = regmap_write(vib->regmap, VIB_DRV, val);
rc = regmap_write(vib->regmap, regs->drv_addr, val);
if (rc < 0)
return rc;
@ -80,10 +92,11 @@ static int pm8xxx_vib_set(struct pm8xxx_vib *vib, bool on)
static void pm8xxx_work_handler(struct work_struct *work)
{
struct pm8xxx_vib *vib = container_of(work, struct pm8xxx_vib, work);
const struct pm8xxx_regs *regs = vib->regs;
int rc;
unsigned int val;
rc = regmap_read(vib->regmap, VIB_DRV, &val);
rc = regmap_read(vib->regmap, regs->drv_addr, &val);
if (rc < 0)
return;
@ -147,6 +160,7 @@ static int pm8xxx_vib_probe(struct platform_device *pdev)
struct input_dev *input_dev;
int error;
unsigned int val;
const struct pm8xxx_regs *regs;
vib = devm_kzalloc(&pdev->dev, sizeof(*vib), GFP_KERNEL);
if (!vib)
@ -163,16 +177,19 @@ static int pm8xxx_vib_probe(struct platform_device *pdev)
INIT_WORK(&vib->work, pm8xxx_work_handler);
vib->vib_input_dev = input_dev;
regs = of_device_get_match_data(&pdev->dev);
/* operate in manual mode */
error = regmap_read(vib->regmap, VIB_DRV, &val);
error = regmap_read(vib->regmap, regs->drv_addr, &val);
if (error < 0)
return error;
val &= ~VIB_DRV_EN_MANUAL_MASK;
error = regmap_write(vib->regmap, VIB_DRV, val);
val &= regs->drv_en_manual_mask;
error = regmap_write(vib->regmap, regs->drv_addr, val);
if (error < 0)
return error;
vib->regs = regs;
vib->reg_vib_drv = val;
input_dev->name = "pm8xxx_vib_ffmemless";
@ -212,8 +229,8 @@ static int __maybe_unused pm8xxx_vib_suspend(struct device *dev)
static SIMPLE_DEV_PM_OPS(pm8xxx_vib_pm_ops, pm8xxx_vib_suspend, NULL);
static const struct of_device_id pm8xxx_vib_id_table[] = {
{ .compatible = "qcom,pm8058-vib" },
{ .compatible = "qcom,pm8921-vib" },
{ .compatible = "qcom,pm8058-vib", .data = &pm8058_regs },
{ .compatible = "qcom,pm8921-vib", .data = &pm8058_regs },
{ }
};
MODULE_DEVICE_TABLE(of, pm8xxx_vib_id_table);