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input: pm8xxx-vibrator: add new SPMI vibrator support

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Add support for a new SPMI vibrator module which is very similar
to the vibrator module inside PM8916 but has a finer drive voltage
step and different output voltage range, its drive level control
is expanded across 2 registers. The vibrator module can be found
in following Qualcomm PMICs: PMI632, PM7250B, PM7325B, PM7550BA.

Signed-off-by: Fenglin Wu <quic_fenglinw@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20240416-pm8xxx-vibrator-new-design-v11-3-7b1c951e1515@quicinc.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Fenglin Wu 2024-04-16 10:44:34 +08:00 committed by Dmitry Torokhov
parent ca7755adf0
commit 9e0631695e
1 changed files with 43 additions and 9 deletions
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52
drivers/input/misc/pm8xxx-vibrator.c
View file

@ -11,10 +11,11 @@
#include <linux/regmap.h>
#include <linux/slab.h>
#define VIB_MAX_LEVEL_mV (3100)
#define VIB_MIN_LEVEL_mV (1200)
#define VIB_PER_STEP_mV (100)
#define VIB_MAX_LEVELS (VIB_MAX_LEVEL_mV - VIB_MIN_LEVEL_mV + VIB_PER_STEP_mV)
#define VIB_MAX_LEVEL_mV(vib) (vib->drv2_addr ? 3544 : 3100)
#define VIB_MIN_LEVEL_mV(vib) (vib->drv2_addr ? 1504 : 1200)
#define VIB_PER_STEP_mV(vib) (vib->drv2_addr ? 8 : 100)
#define VIB_MAX_LEVELS(vib) \
(VIB_MAX_LEVEL_mV(vib) - VIB_MIN_LEVEL_mV(vib) + VIB_PER_STEP_mV(vib))
#define MAX_FF_SPEED 0xff
@ -25,7 +26,11 @@ struct pm8xxx_regs {
unsigned int drv_offset;
unsigned int drv_mask;
unsigned int drv_shift;
unsigned int drv2_offset;
unsigned int drv2_mask;
unsigned int drv2_shift;
unsigned int drv_en_manual_mask;
bool drv_in_step;
};
static const struct pm8xxx_regs pm8058_regs = {
@ -33,6 +38,7 @@ static const struct pm8xxx_regs pm8058_regs = {
.drv_mask = GENMASK(7, 3),
.drv_shift = 3,
.drv_en_manual_mask = 0xfc,
.drv_in_step = true,
};
static struct pm8xxx_regs pm8916_regs = {
@ -42,6 +48,20 @@ static struct pm8xxx_regs pm8916_regs = {
.drv_mask = GENMASK(4, 0),
.drv_shift = 0,
.drv_en_manual_mask = 0,
.drv_in_step = true,
};
static struct pm8xxx_regs pmi632_regs = {
.enable_offset = 0x46,
.enable_mask = BIT(7),
.drv_offset = 0x40,
.drv_mask = GENMASK(7, 0),
.drv_shift = 0,
.drv2_offset = 0x41,
.drv2_mask = GENMASK(3, 0),
.drv2_shift = 8,
.drv_en_manual_mask = 0,
.drv_in_step = false,
};
/**
@ -52,6 +72,7 @@ static struct pm8xxx_regs pm8916_regs = {
* @regs: registers' info
* @enable_addr: vibrator enable register
* @drv_addr: vibrator drive strength register
* @drv2_addr: vibrator drive strength upper byte register
* @speed: speed of vibration set from userland
* @active: state of vibrator
* @level: level of vibration to set in the chip
@ -64,6 +85,7 @@ struct pm8xxx_vib {
const struct pm8xxx_regs *regs;
unsigned int enable_addr;
unsigned int drv_addr;
unsigned int drv2_addr;
int speed;
int level;
bool active;
@ -81,6 +103,9 @@ static int pm8xxx_vib_set(struct pm8xxx_vib *vib, bool on)
unsigned int val = vib->reg_vib_drv;
const struct pm8xxx_regs *regs = vib->regs;
if (regs->drv_in_step)
vib->level /= VIB_PER_STEP_mV(vib);
if (on)
val |= (vib->level << regs->drv_shift) & regs->drv_mask;
else
@ -92,6 +117,14 @@ static int pm8xxx_vib_set(struct pm8xxx_vib *vib, bool on)
vib->reg_vib_drv = val;
if (regs->drv2_mask) {
val = vib->level << regs->drv2_shift;
rc = regmap_write_bits(vib->regmap, vib->drv2_addr,
regs->drv2_mask, on ? val : 0);
if (rc < 0)
return rc;
}
if (regs->enable_mask)
rc = regmap_update_bits(vib->regmap, vib->enable_addr,
regs->enable_mask, on ? regs->enable_mask : 0);
@ -114,17 +147,16 @@ static void pm8xxx_work_handler(struct work_struct *work)
return;
/*
* pmic vibrator supports voltage ranges from 1.2 to 3.1V, so
* pmic vibrator supports voltage ranges from MIN_LEVEL to MAX_LEVEL, so
* scale the level to fit into these ranges.
*/
if (vib->speed) {
vib->active = true;
vib->level = ((VIB_MAX_LEVELS * vib->speed) / MAX_FF_SPEED) +
VIB_MIN_LEVEL_mV;
vib->level /= VIB_PER_STEP_mV;
vib->level = VIB_MIN_LEVEL_mV(vib);
vib->level += mult_frac(VIB_MAX_LEVELS(vib), vib->speed, MAX_FF_SPEED);
} else {
vib->active = false;
vib->level = VIB_MIN_LEVEL_mV / VIB_PER_STEP_mV;
vib->level = VIB_MIN_LEVEL_mV(vib);
}
pm8xxx_vib_set(vib, vib->active);
@ -197,6 +229,7 @@ static int pm8xxx_vib_probe(struct platform_device *pdev)
regs = of_device_get_match_data(&pdev->dev);
vib->enable_addr = reg_base + regs->enable_offset;
vib->drv_addr = reg_base + regs->drv_offset;
vib->drv2_addr = reg_base + regs->drv2_offset;
/* operate in manual mode */
error = regmap_read(vib->regmap, vib->drv_addr, &val);
@ -251,6 +284,7 @@ static const struct of_device_id pm8xxx_vib_id_table[] = {
{ .compatible = "qcom,pm8058-vib", .data = &pm8058_regs },
{ .compatible = "qcom,pm8921-vib", .data = &pm8058_regs },
{ .compatible = "qcom,pm8916-vib", .data = &pm8916_regs },
{ .compatible = "qcom,pmi632-vib", .data = &pmi632_regs },
{ }
};
MODULE_DEVICE_TABLE(of, pm8xxx_vib_id_table);