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power: supply: axp288_charger: Drop platform_data dependency 

When the axp288_charger driver was originally merged, it was merged with
a dependency on some other driver providing platform data for it.

However the battery-data-framework which should provide that data never
got merged, so the axp288_charger as merged upstream has never worked,
its probe method simply always returns -ENODEV.

This commit removes the dependency on the platform_data instead reading
back the charging current and charging voltage that the firmware has set
and using those values as the maximum values the user may set.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
This commit is contained in:
Hans de Goede 2016-12-21 15:36:47 +01:00 committed by Sebastian Reichel
parent d556f21cb0
commit eac53b3664
2 changed files with 32 additions and 67 deletions
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92
drivers/power/supply/axp288_charger.c
View File

@ -143,7 +143,6 @@ enum {
struct axp288_chrg_info {
struct platform_device *pdev;
struct axp20x_chrg_pdata *pdata;
struct regmap *regmap;
struct regmap_irq_chip_data *regmap_irqc;
int irq[CHRG_INTR_END];
@ -769,61 +768,43 @@ static int charger_init_hw_regs(struct axp288_chrg_info *info)
return ret;
}
/* Init charging current and voltage */
info->max_cc = info->pdata->max_cc;
info->max_cv = info->pdata->max_cv;
/* Read current charge voltage and current limit */
ret = regmap_read(info->regmap, AXP20X_CHRG_CTRL1, &val);
if (ret < 0) {
/* Assume default if cannot read */
info->cc = info->pdata->def_cc;
info->cv = info->pdata->def_cv;
} else {
/* Determine charge voltage */
cv = (val & CHRG_CCCV_CV_MASK) >> CHRG_CCCV_CV_BIT_POS;
switch (cv) {
case CHRG_CCCV_CV_4100MV:
info->cv = CV_4100MV;
break;
case CHRG_CCCV_CV_4150MV:
info->cv = CV_4150MV;
break;
case CHRG_CCCV_CV_4200MV:
info->cv = CV_4200MV;
break;
case CHRG_CCCV_CV_4350MV:
info->cv = CV_4350MV;
break;
default:
info->cv = INT_MAX;
break;
}
/* Determine charge current limit */
cc = (ret & CHRG_CCCV_CC_MASK) >> CHRG_CCCV_CC_BIT_POS;
cc = (cc * CHRG_CCCV_CC_LSB_RES) + CHRG_CCCV_CC_OFFSET;
info->cc = cc;
/* Program default charging voltage and current */
cc = min(info->pdata->def_cc, info->max_cc);
cv = min(info->pdata->def_cv, info->max_cv);
ret = axp288_charger_set_cc(info, cc);
if (ret < 0) {
dev_err(&info->pdev->dev,
"error(%d) in setting CC\n", ret);
return ret;
}
ret = axp288_charger_set_cv(info, cv);
if (ret < 0) {
dev_err(&info->pdev->dev,
"error(%d) in setting CV\n", ret);
return ret;
}
dev_err(&info->pdev->dev, "register(%x) read error(%d)\n",
AXP20X_CHRG_CTRL1, ret);
return ret;
}
/* Determine charge voltage */
cv = (val & CHRG_CCCV_CV_MASK) >> CHRG_CCCV_CV_BIT_POS;
switch (cv) {
case CHRG_CCCV_CV_4100MV:
info->cv = CV_4100MV;
break;
case CHRG_CCCV_CV_4150MV:
info->cv = CV_4150MV;
break;
case CHRG_CCCV_CV_4200MV:
info->cv = CV_4200MV;
break;
case CHRG_CCCV_CV_4350MV:
info->cv = CV_4350MV;
break;
}
/* Determine charge current limit */
cc = (ret & CHRG_CCCV_CC_MASK) >> CHRG_CCCV_CC_BIT_POS;
cc = (cc * CHRG_CCCV_CC_LSB_RES) + CHRG_CCCV_CC_OFFSET;
info->cc = cc;
/*
* Do not allow the user to configure higher settings then those
* set by the firmware
*/
info->max_cv = info->cv;
info->max_cc = info->cc;
return 0;
}
@ -841,15 +822,6 @@ static int axp288_charger_probe(struct platform_device *pdev)
info->pdev = pdev;
info->regmap = axp20x->regmap;
info->regmap_irqc = axp20x->regmap_irqc;
info->pdata = pdev->dev.platform_data;
if (!info->pdata) {
/* Try ACPI provided pdata via device properties */
if (!device_property_present(&pdev->dev,
"axp288_charger_data\n"))
dev_err(&pdev->dev, "failed to get platform data\n");
return -ENODEV;
}
info->cable.edev = extcon_get_extcon_dev(AXP288_EXTCON_DEV_NAME);
if (info->cable.edev == NULL) {

7
include/linux/mfd/axp20x.h
View File

@ -554,13 +554,6 @@ struct axp20x_fg_pdata {
int thermistor_curve[MAX_THERM_CURVE_SIZE][2];
};
struct axp20x_chrg_pdata {
int max_cc;
int max_cv;
int def_cc;
int def_cv;
};
struct axp288_extcon_pdata {
/* GPIO pin control to switch D+/D- lines b/w PMIC and SOC */
struct gpio_desc *gpio_mux_cntl;