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Commit 7bfcd4bd authored by Shyam Kumar Thella's avatar Shyam Kumar Thella Committed by Gerrit - the friendly Code Review server
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power: supply: qg: Add support to make QG driver GKI compliant 



Add support for "bms" power supply which is not present in kernel 5.4
through IIO device and properties under it through individual IIO
channels under the IIO device.

Change-Id: I55c44e5db2dc4549021cb429444c7c5afa679c3a
Signed-off-by: default avatarShyam Kumar Thella <sthella@codeaurora.org>
parent 1074012e

drivers/power/supply/Kconfig

+2 −0
Original line number Diff line number Diff line
@@ -723,4 +723,6 @@ config CHARGER_WILCO 
	  information can be found in

	  Documentation/ABI/testing/sysfs-class-power-wilco



source "drivers/power/supply/qcom/Kconfig"



endif # POWER_SUPPLY

drivers/power/supply/qcom/Kconfig

+5 −2
Original line number Diff line number Diff line 
# SPDX-License-Identifier: GPL-2.0-only



menuconfig QCOM_POWER_SUPPLY

	bool "Support for Qualcomm Technologies, Inc. power supply"

	depends on ARCH_QCOM
@@ -7,14 +6,18 @@ menuconfig QCOM_POWER_SUPPLY 
if QCOM_POWER_SUPPLY



config QPNP_QG

	bool "QPNP Qgauge driver"

	tristate "QPNP Qgauge driver"

	depends on MFD_SPMI_PMIC

	depends on IIO

	help

	  Say Y here to enable the Qualcomm Technologies, Inc. QGauge driver

	  which uses the periodic sampling of the battery voltage and current

	  to determine the battery state-of-charge (SOC) and supports other

	  battery management features.



	  To compile this driver as a module, choose M here: the

	  module will be called qcom-qpnp-qg.



config QPNP_SMB5

	tristate "SMB5 Battery Charger"

	depends on MFD_SPMI_PMIC && IIO

drivers/power/supply/qcom/Makefile

+2 −1
Original line number Diff line number Diff line
@@ -2,6 +2,7 @@ 


obj-$(CONFIG_QPNP_SMB5) += qpnp-smb5-main.o

qpnp-smb5-main-y += step-chg-jeita.o battery.o qpnp-smb5.o smb5-lib.o pmic-voter.o storm-watch.o schgm-flash.o battery-profile-loader.o smb5-iio.o

obj-$(CONFIG_QPNP_QG)	+= qpnp-qg.o battery-profile-loader.o pmic-voter.o qg-util.o qg-soc.o qg-sdam.o qg-battery-profile.o qg-profile-lib.o fg-alg.o

obj-$(CONFIG_QPNP_QG)	+= qcom-qpnp-qg.o

qcom-qpnp-qg-y	+= qpnp-qg.o battery-profile-loader.o pmic-voter.o qg-util.o qg-soc.o qg-sdam.o qg-battery-profile.o qg-profile-lib.o fg-alg.o

obj-$(CONFIG_SMB1398_CHARGER)		+= smb1398-charger.o pmic-voter.o

obj-$(CONFIG_SMB1355_SLAVE_CHARGER)	+= smb1355-charger.o pmic-voter.o

drivers/power/supply/qcom/fg-alg.c

+23 −9
Original line number Diff line number Diff line
@@ -6,11 +6,14 @@ 
#define pr_fmt(fmt)	"ALG: %s: " fmt, __func__



#include <linux/err.h>

#include <linux/iio/iio.h>

#include <linux/kernel.h>

#include <linux/mutex.h>

#include <linux/power_supply.h>

#include <linux/qti_power_supply.h>

#include <linux/slab.h>

#include <linux/sort.h>

#include <dt-bindings/iio/qti_power_supply_iio.h>

#include "fg-alg.h"



#define FULL_SOC_RAW		255
@@ -801,6 +804,18 @@ int cap_learning_init(struct cap_learning *cl) 


/* SOH based profile loading */



static int write_int_iio_chan(struct iio_channel *iio_chan_list,

						int chan_id, int val)

{

	do {

		if (iio_chan_list->channel->channel == chan_id)

			return iio_write_channel_raw(iio_chan_list,

							val);

	} while (iio_chan_list++);



	return -ENOENT;

}



/**

 * soh_get_batt_age_level -

 * @sp: SOH profile object
@@ -834,10 +849,9 @@ static int soh_get_batt_age_level(struct soh_profile *sp, int soh, 
 */

int soh_profile_update(struct soh_profile *sp, int new_soh)

{

	union power_supply_propval pval = {0, };

	int rc, batt_age_level = 0;



	if (!sp || !sp->bms_psy)

	if (!sp || !sp->bms_psy || !sp->iio_chan_list)

		return -ENODEV;



	if (new_soh <= 0)
@@ -855,9 +869,8 @@ int soh_profile_update(struct soh_profile *sp, int new_soh) 
		return rc;



	if (batt_age_level != sp->last_batt_age_level) {

		pval.intval = batt_age_level;

		rc = power_supply_set_property(sp->bms_psy,

			POWER_SUPPLY_PROP_BATT_AGE_LEVEL, &pval);

		rc = write_int_iio_chan(sp->iio_chan_list,

				PSY_IIO_BATT_AGE_LEVEL, batt_age_level);

		if (rc < 0) {

			pr_err("Couldn't set batt_age_level rc=%d\n", rc);

			return rc;
@@ -886,7 +899,8 @@ int soh_profile_init(struct device *dev, struct soh_profile *sp) 
{

	int rc, profile_count = 0;



	if (!dev || !sp || !sp->bp_node || !sp->bms_psy)

	if (!dev || !sp || !sp->bp_node || !sp->bms_psy ||

		!sp->iio_chan_list)

		return -ENODEV;



	rc = of_batterydata_get_aged_profile_count(sp->bp_node,
@@ -1199,7 +1213,7 @@ static int get_time_to_full_locked(struct ttf *ttf, int *val) 
	pr_debug("TTF: i_cc2cv=%d\n", i_cc2cv);



	/* if we are already in CV state then we can skip estimating CC */

	if (charge_type == POWER_SUPPLY_CHARGE_TYPE_TAPER)

	if (charge_type == QTI_POWER_SUPPLY_CHARGE_TYPE_TAPER)

		goto cv_estimate;



	/* estimated SOC at the CC to CV transition */
@@ -1329,14 +1343,14 @@ static int get_time_to_full_locked(struct ttf *ttf, int *val) 
cv_estimate:

	pr_debug("TTF: t_predicted_cc=%d\n", t_predicted);



	if (charge_type == POWER_SUPPLY_CHARGE_TYPE_TAPER)

	if (charge_type == QTI_POWER_SUPPLY_CHARGE_TYPE_TAPER)

		iterm = max(100, abs(iterm));

	else

		iterm = max(100, abs(iterm) + ttf->iterm_delta);



	pr_debug("TTF: iterm=%d\n", iterm);



	if (charge_type == POWER_SUPPLY_CHARGE_TYPE_TAPER)

	if (charge_type == QTI_POWER_SUPPLY_CHARGE_TYPE_TAPER)

		tau = max(MILLI_UNIT, ibatt_avg * MILLI_UNIT / iterm);

	else

		tau = max(MILLI_UNIT, i_cc2cv * MILLI_UNIT / iterm);

drivers/power/supply/qcom/fg-alg.h

+1 −1
Original line number Diff line number Diff line
@@ -138,6 +138,7 @@ struct ttf { 
struct soh_profile {

	struct device_node *bp_node;

	struct power_supply *bms_psy;

	struct iio_channel *iio_chan_list;

	struct soh_range *soh_data;

	int batt_id_kohms;

	int profile_count;
@@ -166,5 +167,4 @@ int ttf_get_time_to_full(struct ttf *ttf, int *val); 
int ttf_tte_init(struct ttf *ttf);

int soh_profile_init(struct device *dev, struct soh_profile *sp);

int soh_profile_update(struct soh_profile *sp, int soh);



#endif