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Date: Thu, 17 Oct 2013 11:34:54 +0900
From: Jonghwa Lee <jonghwa3.lee@...sung.com>
To: linux-kernel@...r.kernel.org
Cc: Anton Vorontsov <anton@...msg.org>,
David Woodhouse <dwmw2@...radead.org>,
Jonghwa Lee <jonghwa3.lee@...sung.com>,
Myungjoo Ham <myungjoo.ham@...sung.com>
Subject: [PATCH] fuelguage: max17042: Support regmap to access device's
registers.
This patch makes max17042 fuelguage driver uses regmap API to access
its device's registers.
It's based on linux-next.
Signed-off-by: Jonghwa Lee <jonghwa3.lee@...sung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@...sung.com>
---
drivers/power/max17042_battery.c | 357 +++++++++++++++++++-------------------
1 file changed, 174 insertions(+), 183 deletions(-)
diff --git a/drivers/power/max17042_battery.c b/drivers/power/max17042_battery.c
index d664ef5..0382cb5 100644
--- a/drivers/power/max17042_battery.c
+++ b/drivers/power/max17042_battery.c
@@ -33,6 +33,7 @@
#include <linux/power_supply.h>
#include <linux/power/max17042_battery.h>
#include <linux/of.h>
+#include <linux/regmap.h>
/* Status register bits */
#define STATUS_POR_BIT (1 << 1)
@@ -67,6 +68,7 @@
struct max17042_chip {
struct i2c_client *client;
+ struct regmap *regmap;
struct power_supply battery;
enum max170xx_chip_type chip_type;
struct max17042_platform_data *pdata;
@@ -74,35 +76,6 @@ struct max17042_chip {
int init_complete;
};
-static int max17042_write_reg(struct i2c_client *client, u8 reg, u16 value)
-{
- int ret = i2c_smbus_write_word_data(client, reg, value);
-
- if (ret < 0)
- dev_err(&client->dev, "%s: err %d\n", __func__, ret);
-
- return ret;
-}
-
-static int max17042_read_reg(struct i2c_client *client, u8 reg)
-{
- int ret = i2c_smbus_read_word_data(client, reg);
-
- if (ret < 0)
- dev_err(&client->dev, "%s: err %d\n", __func__, ret);
-
- return ret;
-}
-
-static void max17042_set_reg(struct i2c_client *client,
- struct max17042_reg_data *data, int size)
-{
- int i;
-
- for (i = 0; i < size; i++)
- max17042_write_reg(client, data[i].addr, data[i].data);
-}
-
static enum power_supply_property max17042_battery_props[] = {
POWER_SUPPLY_PROP_PRESENT,
POWER_SUPPLY_PROP_CYCLE_COUNT,
@@ -125,96 +98,98 @@ static int max17042_get_property(struct power_supply *psy,
{
struct max17042_chip *chip = container_of(psy,
struct max17042_chip, battery);
+ struct regmap *map = chip->regmap;
int ret;
+ u32 data;
if (!chip->init_complete)
return -EAGAIN;
switch (psp) {
case POWER_SUPPLY_PROP_PRESENT:
- ret = max17042_read_reg(chip->client, MAX17042_STATUS);
+ ret = regmap_read(map, MAX17042_STATUS, &data);
if (ret < 0)
return ret;
- if (ret & MAX17042_STATUS_BattAbsent)
+ if (data & MAX17042_STATUS_BattAbsent)
val->intval = 0;
else
val->intval = 1;
break;
case POWER_SUPPLY_PROP_CYCLE_COUNT:
- ret = max17042_read_reg(chip->client, MAX17042_Cycles);
+ ret = regmap_read(map, MAX17042_Cycles, &data);
if (ret < 0)
return ret;
- val->intval = ret;
+ val->intval = data;
break;
case POWER_SUPPLY_PROP_VOLTAGE_MAX:
- ret = max17042_read_reg(chip->client, MAX17042_MinMaxVolt);
+ ret = regmap_read(map, MAX17042_MinMaxVolt, &data);
if (ret < 0)
return ret;
- val->intval = ret >> 8;
+ val->intval = data >> 8;
val->intval *= 20000; /* Units of LSB = 20mV */
break;
case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
if (chip->chip_type == MAX17042)
- ret = max17042_read_reg(chip->client, MAX17042_V_empty);
+ ret = regmap_read(map, MAX17042_V_empty, &data);
else
- ret = max17042_read_reg(chip->client, MAX17047_V_empty);
+ ret = regmap_read(map, MAX17047_V_empty, &data);
if (ret < 0)
return ret;
- val->intval = ret >> 7;
+ val->intval = data >> 7;
val->intval *= 10000; /* Units of LSB = 10mV */
break;
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
- ret = max17042_read_reg(chip->client, MAX17042_VCELL);
+ ret = regmap_read(map, MAX17042_VCELL, &data);
if (ret < 0)
return ret;
- val->intval = ret * 625 / 8;
+ val->intval = data * 625 / 8;
break;
case POWER_SUPPLY_PROP_VOLTAGE_AVG:
- ret = max17042_read_reg(chip->client, MAX17042_AvgVCELL);
+ ret = regmap_read(map, MAX17042_AvgVCELL, &data);
if (ret < 0)
return ret;
- val->intval = ret * 625 / 8;
+ val->intval = data * 625 / 8;
break;
case POWER_SUPPLY_PROP_VOLTAGE_OCV:
- ret = max17042_read_reg(chip->client, MAX17042_OCVInternal);
+ ret = regmap_read(map, MAX17042_OCVInternal, &data);
if (ret < 0)
return ret;
- val->intval = ret * 625 / 8;
+ val->intval = data * 625 / 8;
break;
case POWER_SUPPLY_PROP_CAPACITY:
- ret = max17042_read_reg(chip->client, MAX17042_RepSOC);
+ ret = regmap_read(map, MAX17042_RepSOC, &data);
if (ret < 0)
return ret;
- val->intval = ret >> 8;
+ val->intval = data >> 8;
break;
case POWER_SUPPLY_PROP_CHARGE_FULL:
- ret = max17042_read_reg(chip->client, MAX17042_FullCAP);
+ ret = regmap_read(map, MAX17042_FullCAP, &data);
if (ret < 0)
return ret;
- val->intval = ret * 1000 / 2;
+ val->intval = data * 1000 / 2;
break;
case POWER_SUPPLY_PROP_CHARGE_COUNTER:
- ret = max17042_read_reg(chip->client, MAX17042_QH);
+ ret = regmap_read(map, MAX17042_QH, &data);
if (ret < 0)
return ret;
- val->intval = ret * 1000 / 2;
+ val->intval = data * 1000 / 2;
break;
case POWER_SUPPLY_PROP_TEMP:
- ret = max17042_read_reg(chip->client, MAX17042_TEMP);
+ ret = regmap_read(map, MAX17042_TEMP, &data);
if (ret < 0)
return ret;
- val->intval = ret;
+ val->intval = data;
/* The value is signed. */
if (val->intval & 0x8000) {
val->intval = (0x7fff & ~val->intval) + 1;
@@ -226,11 +201,11 @@ static int max17042_get_property(struct power_supply *psy,
break;
case POWER_SUPPLY_PROP_CURRENT_NOW:
if (chip->pdata->enable_current_sense) {
- ret = max17042_read_reg(chip->client, MAX17042_Current);
+ ret = regmap_read(map, MAX17042_Current, &data);
if (ret < 0)
return ret;
- val->intval = ret;
+ val->intval = data;
if (val->intval & 0x8000) {
/* Negative */
val->intval = ~val->intval & 0x7fff;
@@ -244,12 +219,11 @@ static int max17042_get_property(struct power_supply *psy,
break;
case POWER_SUPPLY_PROP_CURRENT_AVG:
if (chip->pdata->enable_current_sense) {
- ret = max17042_read_reg(chip->client,
- MAX17042_AvgCurrent);
+ ret = regmap_read(map, MAX17042_AvgCurrent, &data);
if (ret < 0)
return ret;
- val->intval = ret;
+ val->intval = data;
if (val->intval & 0x8000) {
/* Negative */
val->intval = ~val->intval & 0x7fff;
@@ -267,16 +241,15 @@ static int max17042_get_property(struct power_supply *psy,
return 0;
}
-static int max17042_write_verify_reg(struct i2c_client *client,
- u8 reg, u16 value)
+static int max17042_write_verify_reg(struct regmap *map, u8 reg, u32 value)
{
int retries = 8;
int ret;
- u16 read_value;
+ u32 read_value;
do {
- ret = i2c_smbus_write_word_data(client, reg, value);
- read_value = max17042_read_reg(client, reg);
+ ret = regmap_write(map, reg, value);
+ regmap_read(map, reg, &read_value);
if (read_value != value) {
ret = -EIO;
retries--;
@@ -284,50 +257,51 @@ static int max17042_write_verify_reg(struct i2c_client *client,
} while (retries && read_value != value);
if (ret < 0)
- dev_err(&client->dev, "%s: err %d\n", __func__, ret);
+ pr_err("%s: err %d\n", __func__, ret);
return ret;
}
-static inline void max17042_override_por(
- struct i2c_client *client, u8 reg, u16 value)
+static inline void max17042_override_por(struct regmap *map,
+ u8 reg, u16 value)
{
if (value)
- max17042_write_reg(client, reg, value);
+ regmap_write(map, reg, value);
}
static inline void max10742_unlock_model(struct max17042_chip *chip)
{
- struct i2c_client *client = chip->client;
- max17042_write_reg(client, MAX17042_MLOCKReg1, MODEL_UNLOCK1);
- max17042_write_reg(client, MAX17042_MLOCKReg2, MODEL_UNLOCK2);
+ struct regmap *map = chip->regmap;
+ regmap_write(map, MAX17042_MLOCKReg1, MODEL_UNLOCK1);
+ regmap_write(map, MAX17042_MLOCKReg2, MODEL_UNLOCK2);
}
static inline void max10742_lock_model(struct max17042_chip *chip)
{
- struct i2c_client *client = chip->client;
- max17042_write_reg(client, MAX17042_MLOCKReg1, MODEL_LOCK1);
- max17042_write_reg(client, MAX17042_MLOCKReg2, MODEL_LOCK2);
+ struct regmap *map = chip->regmap;
+
+ regmap_write(map, MAX17042_MLOCKReg1, MODEL_LOCK1);
+ regmap_write(map, MAX17042_MLOCKReg2, MODEL_LOCK2);
}
static inline void max17042_write_model_data(struct max17042_chip *chip,
u8 addr, int size)
{
- struct i2c_client *client = chip->client;
+ struct regmap *map = chip->regmap;
int i;
for (i = 0; i < size; i++)
- max17042_write_reg(client, addr + i,
- chip->pdata->config_data->cell_char_tbl[i]);
+ regmap_write(map, addr + i,
+ chip->pdata->config_data->cell_char_tbl[i]);
}
static inline void max17042_read_model_data(struct max17042_chip *chip,
- u8 addr, u16 *data, int size)
+ u8 addr, u32 *data, int size)
{
- struct i2c_client *client = chip->client;
+ struct regmap *map = chip->regmap;
int i;
for (i = 0; i < size; i++)
- data[i] = max17042_read_reg(client, addr + i);
+ regmap_read(map, addr + i, &data[i]);
}
static inline int max17042_model_data_compare(struct max17042_chip *chip,
@@ -350,7 +324,7 @@ static int max17042_init_model(struct max17042_chip *chip)
{
int ret;
int table_size = ARRAY_SIZE(chip->pdata->config_data->cell_char_tbl);
- u16 *temp_data;
+ u32 *temp_data;
temp_data = kcalloc(table_size, sizeof(*temp_data), GFP_KERNEL);
if (!temp_data)
@@ -365,7 +339,7 @@ static int max17042_init_model(struct max17042_chip *chip)
ret = max17042_model_data_compare(
chip,
chip->pdata->config_data->cell_char_tbl,
- temp_data,
+ (u16 *)temp_data,
table_size);
max10742_lock_model(chip);
@@ -378,7 +352,7 @@ static int max17042_verify_model_lock(struct max17042_chip *chip)
{
int i;
int table_size = ARRAY_SIZE(chip->pdata->config_data->cell_char_tbl);
- u16 *temp_data;
+ u32 *temp_data;
int ret = 0;
temp_data = kcalloc(table_size, sizeof(*temp_data), GFP_KERNEL);
@@ -398,40 +372,38 @@ static int max17042_verify_model_lock(struct max17042_chip *chip)
static void max17042_write_config_regs(struct max17042_chip *chip)
{
struct max17042_config_data *config = chip->pdata->config_data;
+ struct regmap *map = chip->regmap;
- max17042_write_reg(chip->client, MAX17042_CONFIG, config->config);
- max17042_write_reg(chip->client, MAX17042_LearnCFG, config->learn_cfg);
- max17042_write_reg(chip->client, MAX17042_FilterCFG,
+ regmap_write(map, MAX17042_CONFIG, config->config);
+ regmap_write(map, MAX17042_LearnCFG, config->learn_cfg);
+ regmap_write(map, MAX17042_FilterCFG,
config->filter_cfg);
- max17042_write_reg(chip->client, MAX17042_RelaxCFG, config->relax_cfg);
+ regmap_write(map, MAX17042_RelaxCFG, config->relax_cfg);
if (chip->chip_type == MAX17047)
- max17042_write_reg(chip->client, MAX17047_FullSOCThr,
+ regmap_write(map, MAX17047_FullSOCThr,
config->full_soc_thresh);
}
static void max17042_write_custom_regs(struct max17042_chip *chip)
{
struct max17042_config_data *config = chip->pdata->config_data;
+ struct regmap *map = chip->regmap;
- max17042_write_verify_reg(chip->client, MAX17042_RCOMP0,
- config->rcomp0);
- max17042_write_verify_reg(chip->client, MAX17042_TempCo,
- config->tcompc0);
- max17042_write_verify_reg(chip->client, MAX17042_ICHGTerm,
- config->ichgt_term);
+ max17042_write_verify_reg(map, MAX17042_RCOMP0, config->rcomp0);
+ max17042_write_verify_reg(map, MAX17042_TempCo, config->tcompc0);
+ max17042_write_verify_reg(map, MAX17042_ICHGTerm, config->ichgt_term);
if (chip->chip_type == MAX17042) {
- max17042_write_reg(chip->client, MAX17042_EmptyTempCo,
- config->empty_tempco);
- max17042_write_verify_reg(chip->client, MAX17042_K_empty0,
+ regmap_write(map, MAX17042_EmptyTempCo, config->empty_tempco);
+ max17042_write_verify_reg(map, MAX17042_K_empty0,
config->kempty0);
} else {
- max17042_write_verify_reg(chip->client, MAX17047_QRTbl00,
+ max17042_write_verify_reg(map, MAX17047_QRTbl00,
config->qrtbl00);
- max17042_write_verify_reg(chip->client, MAX17047_QRTbl10,
+ max17042_write_verify_reg(map, MAX17047_QRTbl10,
config->qrtbl10);
- max17042_write_verify_reg(chip->client, MAX17047_QRTbl20,
+ max17042_write_verify_reg(map, MAX17047_QRTbl20,
config->qrtbl20);
- max17042_write_verify_reg(chip->client, MAX17047_QRTbl30,
+ max17042_write_verify_reg(map, MAX17047_QRTbl30,
config->qrtbl30);
}
}
@@ -439,58 +411,60 @@ static void max17042_write_custom_regs(struct max17042_chip *chip)
static void max17042_update_capacity_regs(struct max17042_chip *chip)
{
struct max17042_config_data *config = chip->pdata->config_data;
+ struct regmap *map = chip->regmap;
- max17042_write_verify_reg(chip->client, MAX17042_FullCAP,
+ max17042_write_verify_reg(map, MAX17042_FullCAP,
config->fullcap);
- max17042_write_reg(chip->client, MAX17042_DesignCap,
- config->design_cap);
- max17042_write_verify_reg(chip->client, MAX17042_FullCAPNom,
+ regmap_write(map, MAX17042_DesignCap, config->design_cap);
+ max17042_write_verify_reg(map, MAX17042_FullCAPNom,
config->fullcapnom);
}
static void max17042_reset_vfsoc0_reg(struct max17042_chip *chip)
{
- u16 vfSoc;
+ unsigned int vfSoc;
+ struct regmap *map = chip->regmap;
- vfSoc = max17042_read_reg(chip->client, MAX17042_VFSOC);
- max17042_write_reg(chip->client, MAX17042_VFSOC0Enable, VFSOC0_UNLOCK);
- max17042_write_verify_reg(chip->client, MAX17042_VFSOC0, vfSoc);
- max17042_write_reg(chip->client, MAX17042_VFSOC0Enable, VFSOC0_LOCK);
+ regmap_read(map, MAX17042_VFSOC, &vfSoc);
+ regmap_write(map, MAX17042_VFSOC0Enable, VFSOC0_UNLOCK);
+ max17042_write_verify_reg(map, MAX17042_VFSOC0, vfSoc);
+ regmap_write(map, MAX17042_VFSOC0Enable, VFSOC0_LOCK);
}
static void max17042_load_new_capacity_params(struct max17042_chip *chip)
{
- u16 full_cap0, rep_cap, dq_acc, vfSoc;
+ u32 full_cap0, rep_cap, dq_acc, vfSoc;
u32 rem_cap;
struct max17042_config_data *config = chip->pdata->config_data;
+ struct regmap *map = chip->regmap;
- full_cap0 = max17042_read_reg(chip->client, MAX17042_FullCAP0);
- vfSoc = max17042_read_reg(chip->client, MAX17042_VFSOC);
+ regmap_read(map, MAX17042_FullCAP0, &full_cap0);
+ regmap_read(map, MAX17042_VFSOC, &vfSoc);
/* fg_vfSoc needs to shifted by 8 bits to get the
* perc in 1% accuracy, to get the right rem_cap multiply
* full_cap0, fg_vfSoc and devide by 100
*/
rem_cap = ((vfSoc >> 8) * full_cap0) / 100;
- max17042_write_verify_reg(chip->client, MAX17042_RemCap, (u16)rem_cap);
+ max17042_write_verify_reg(map, MAX17042_RemCap, rem_cap);
- rep_cap = (u16)rem_cap;
- max17042_write_verify_reg(chip->client, MAX17042_RepCap, rep_cap);
+ rep_cap = rem_cap;
+ max17042_write_verify_reg(map, MAX17042_RepCap, rep_cap);
/* Write dQ_acc to 200% of Capacity and dP_acc to 200% */
dq_acc = config->fullcap / dQ_ACC_DIV;
- max17042_write_verify_reg(chip->client, MAX17042_dQacc, dq_acc);
- max17042_write_verify_reg(chip->client, MAX17042_dPacc, dP_ACC_200);
+ max17042_write_verify_reg(map, MAX17042_dQacc, dq_acc);
+ max17042_write_verify_reg(map, MAX17042_dPacc, dP_ACC_200);
- max17042_write_verify_reg(chip->client, MAX17042_FullCAP,
+ max17042_write_verify_reg(map, MAX17042_FullCAP,
config->fullcap);
- max17042_write_reg(chip->client, MAX17042_DesignCap,
+ regmap_write(map, MAX17042_DesignCap,
config->design_cap);
- max17042_write_verify_reg(chip->client, MAX17042_FullCAPNom,
+ max17042_write_verify_reg(map, MAX17042_FullCAPNom,
config->fullcapnom);
/* Update SOC register with new SOC */
- max17042_write_reg(chip->client, MAX17042_RepSOC, vfSoc);
+ regmap_write(map, MAX17042_RepSOC, vfSoc);
}
/*
@@ -500,59 +474,60 @@ static void max17042_load_new_capacity_params(struct max17042_chip *chip)
*/
static inline void max17042_override_por_values(struct max17042_chip *chip)
{
- struct i2c_client *client = chip->client;
+ struct regmap *map = chip->regmap;
struct max17042_config_data *config = chip->pdata->config_data;
- max17042_override_por(client, MAX17042_TGAIN, config->tgain);
- max17042_override_por(client, MAx17042_TOFF, config->toff);
- max17042_override_por(client, MAX17042_CGAIN, config->cgain);
- max17042_override_por(client, MAX17042_COFF, config->coff);
-
- max17042_override_por(client, MAX17042_VALRT_Th, config->valrt_thresh);
- max17042_override_por(client, MAX17042_TALRT_Th, config->talrt_thresh);
- max17042_override_por(client, MAX17042_SALRT_Th,
- config->soc_alrt_thresh);
- max17042_override_por(client, MAX17042_CONFIG, config->config);
- max17042_override_por(client, MAX17042_SHDNTIMER, config->shdntimer);
-
- max17042_override_por(client, MAX17042_DesignCap, config->design_cap);
- max17042_override_por(client, MAX17042_ICHGTerm, config->ichgt_term);
-
- max17042_override_por(client, MAX17042_AtRate, config->at_rate);
- max17042_override_por(client, MAX17042_LearnCFG, config->learn_cfg);
- max17042_override_por(client, MAX17042_FilterCFG, config->filter_cfg);
- max17042_override_por(client, MAX17042_RelaxCFG, config->relax_cfg);
- max17042_override_por(client, MAX17042_MiscCFG, config->misc_cfg);
- max17042_override_por(client, MAX17042_MaskSOC, config->masksoc);
-
- max17042_override_por(client, MAX17042_FullCAP, config->fullcap);
- max17042_override_por(client, MAX17042_FullCAPNom, config->fullcapnom);
+ max17042_override_por(map, MAX17042_TGAIN, config->tgain);
+ max17042_override_por(map, MAx17042_TOFF, config->toff);
+ max17042_override_por(map, MAX17042_CGAIN, config->cgain);
+ max17042_override_por(map, MAX17042_COFF, config->coff);
+
+ max17042_override_por(map, MAX17042_VALRT_Th, config->valrt_thresh);
+ max17042_override_por(map, MAX17042_TALRT_Th, config->talrt_thresh);
+ max17042_override_por(map, MAX17042_SALRT_Th,
+ config->soc_alrt_thresh);
+ max17042_override_por(map, MAX17042_CONFIG, config->config);
+ max17042_override_por(map, MAX17042_SHDNTIMER, config->shdntimer);
+
+ max17042_override_por(map, MAX17042_DesignCap, config->design_cap);
+ max17042_override_por(map, MAX17042_ICHGTerm, config->ichgt_term);
+
+ max17042_override_por(map, MAX17042_AtRate, config->at_rate);
+ max17042_override_por(map, MAX17042_LearnCFG, config->learn_cfg);
+ max17042_override_por(map, MAX17042_FilterCFG, config->filter_cfg);
+ max17042_override_por(map, MAX17042_RelaxCFG, config->relax_cfg);
+ max17042_override_por(map, MAX17042_MiscCFG, config->misc_cfg);
+ max17042_override_por(map, MAX17042_MaskSOC, config->masksoc);
+
+ max17042_override_por(map, MAX17042_FullCAP, config->fullcap);
+ max17042_override_por(map, MAX17042_FullCAPNom, config->fullcapnom);
if (chip->chip_type == MAX17042)
- max17042_override_por(client, MAX17042_SOC_empty,
+ max17042_override_por(map, MAX17042_SOC_empty,
config->socempty);
- max17042_override_por(client, MAX17042_LAvg_empty, config->lavg_empty);
- max17042_override_por(client, MAX17042_dQacc, config->dqacc);
- max17042_override_por(client, MAX17042_dPacc, config->dpacc);
+ max17042_override_por(map, MAX17042_LAvg_empty, config->lavg_empty);
+ max17042_override_por(map, MAX17042_dQacc, config->dqacc);
+ max17042_override_por(map, MAX17042_dPacc, config->dpacc);
if (chip->chip_type == MAX17042)
- max17042_override_por(client, MAX17042_V_empty, config->vempty);
+ max17042_override_por(map, MAX17042_V_empty, config->vempty);
else
- max17042_override_por(client, MAX17047_V_empty, config->vempty);
- max17042_override_por(client, MAX17042_TempNom, config->temp_nom);
- max17042_override_por(client, MAX17042_TempLim, config->temp_lim);
- max17042_override_por(client, MAX17042_FCTC, config->fctc);
- max17042_override_por(client, MAX17042_RCOMP0, config->rcomp0);
- max17042_override_por(client, MAX17042_TempCo, config->tcompc0);
+ max17042_override_por(map, MAX17047_V_empty, config->vempty);
+ max17042_override_por(map, MAX17042_TempNom, config->temp_nom);
+ max17042_override_por(map, MAX17042_TempLim, config->temp_lim);
+ max17042_override_por(map, MAX17042_FCTC, config->fctc);
+ max17042_override_por(map, MAX17042_RCOMP0, config->rcomp0);
+ max17042_override_por(map, MAX17042_TempCo, config->tcompc0);
if (chip->chip_type) {
- max17042_override_por(client, MAX17042_EmptyTempCo,
- config->empty_tempco);
- max17042_override_por(client, MAX17042_K_empty0,
- config->kempty0);
+ max17042_override_por(map, MAX17042_EmptyTempCo,
+ config->empty_tempco);
+ max17042_override_por(map, MAX17042_K_empty0,
+ config->kempty0);
}
}
static int max17042_init_chip(struct max17042_chip *chip)
{
+ struct regmap *map = chip->regmap;
int ret;
int val;
@@ -597,31 +572,32 @@ static int max17042_init_chip(struct max17042_chip *chip)
max17042_load_new_capacity_params(chip);
/* Init complete, Clear the POR bit */
- val = max17042_read_reg(chip->client, MAX17042_STATUS);
- max17042_write_reg(chip->client, MAX17042_STATUS,
- val & (~STATUS_POR_BIT));
+ regmap_read(map, MAX17042_STATUS, &val);
+ regmap_write(map, MAX17042_STATUS, val & (~STATUS_POR_BIT));
return 0;
}
static void max17042_set_soc_threshold(struct max17042_chip *chip, u16 off)
{
- u16 soc, soc_tr;
+ struct regmap *map = chip->regmap;
+ u32 soc, soc_tr;
/* program interrupt thesholds such that we should
* get interrupt for every 'off' perc change in the soc
*/
- soc = max17042_read_reg(chip->client, MAX17042_RepSOC) >> 8;
+ regmap_read(map, MAX17042_RepSOC, &soc);
+ soc >>= 8;
soc_tr = (soc + off) << 8;
soc_tr |= (soc - off);
- max17042_write_reg(chip->client, MAX17042_SALRT_Th, soc_tr);
+ regmap_write(map, MAX17042_SALRT_Th, soc_tr);
}
static irqreturn_t max17042_thread_handler(int id, void *dev)
{
struct max17042_chip *chip = dev;
- u16 val;
+ u32 val;
- val = max17042_read_reg(chip->client, MAX17042_STATUS);
+ regmap_read(chip->regmap, MAX17042_STATUS, &val);
if ((val & STATUS_INTR_SOCMIN_BIT) ||
(val & STATUS_INTR_SOCMAX_BIT)) {
dev_info(&chip->client->dev, "SOC threshold INTR\n");
@@ -682,13 +658,20 @@ max17042_get_pdata(struct device *dev)
}
#endif
+static struct regmap_config max17042_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 16,
+ .val_format_endian = REGMAP_ENDIAN_NATIVE,
+};
+
static int max17042_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
struct max17042_chip *chip;
int ret;
- int reg;
+ int i;
+ u32 val;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA))
return -EIO;
@@ -698,6 +681,12 @@ static int max17042_probe(struct i2c_client *client,
return -ENOMEM;
chip->client = client;
+ chip->regmap = devm_regmap_init_i2c(client, &max17042_regmap_config);
+ if (IS_ERR(chip->regmap)) {
+ dev_err(&client->dev, "Failed to initialize regmap\n");
+ return -EINVAL;
+ }
+
chip->pdata = max17042_get_pdata(&client->dev);
if (!chip->pdata) {
dev_err(&client->dev, "no platform data provided\n");
@@ -706,15 +695,15 @@ static int max17042_probe(struct i2c_client *client,
i2c_set_clientdata(client, chip);
- ret = max17042_read_reg(chip->client, MAX17042_DevName);
- if (ret == MAX17042_IC_VERSION) {
+ regmap_read(chip->regmap, MAX17042_DevName, &val);
+ if (val == MAX17042_IC_VERSION) {
dev_dbg(&client->dev, "chip type max17042 detected\n");
chip->chip_type = MAX17042;
- } else if (ret == MAX17047_IC_VERSION) {
+ } else if (val == MAX17047_IC_VERSION) {
dev_dbg(&client->dev, "chip type max17047/50 detected\n");
chip->chip_type = MAX17047;
} else {
- dev_err(&client->dev, "device version mismatch: %x\n", ret);
+ dev_err(&client->dev, "device version mismatch: %x\n", val);
return -EIO;
}
@@ -733,13 +722,15 @@ static int max17042_probe(struct i2c_client *client,
chip->pdata->r_sns = MAX17042_DEFAULT_SNS_RESISTOR;
if (chip->pdata->init_data)
- max17042_set_reg(client, chip->pdata->init_data,
- chip->pdata->num_init_data);
+ for (i = 0; i < chip->pdata->num_init_data; i++)
+ regmap_write(chip->regmap,
+ chip->pdata->init_data[i].addr,
+ chip->pdata->init_data[i].data);
if (!chip->pdata->enable_current_sense) {
- max17042_write_reg(client, MAX17042_CGAIN, 0x0000);
- max17042_write_reg(client, MAX17042_MiscCFG, 0x0003);
- max17042_write_reg(client, MAX17042_LearnCFG, 0x0007);
+ regmap_write(chip->regmap, MAX17042_CGAIN, 0x0000);
+ regmap_write(chip->regmap, MAX17042_MiscCFG, 0x0003);
+ regmap_write(chip->regmap, MAX17042_LearnCFG, 0x0007);
}
ret = power_supply_register(&client->dev, &chip->battery);
@@ -754,9 +745,9 @@ static int max17042_probe(struct i2c_client *client,
IRQF_TRIGGER_FALLING,
chip->battery.name, chip);
if (!ret) {
- reg = max17042_read_reg(client, MAX17042_CONFIG);
- reg |= CONFIG_ALRT_BIT_ENBL;
- max17042_write_reg(client, MAX17042_CONFIG, reg);
+ regmap_read(chip->regmap, MAX17042_CONFIG, &val);
+ val |= CONFIG_ALRT_BIT_ENBL;
+ regmap_write(chip->regmap, MAX17042_CONFIG, val);
max17042_set_soc_threshold(chip, 1);
} else {
client->irq = 0;
@@ -765,8 +756,8 @@ static int max17042_probe(struct i2c_client *client,
}
}
- reg = max17042_read_reg(chip->client, MAX17042_STATUS);
- if (reg & STATUS_POR_BIT) {
+ regmap_read(chip->regmap, MAX17042_STATUS, &val);
+ if (val & STATUS_POR_BIT) {
INIT_WORK(&chip->work, max17042_init_worker);
schedule_work(&chip->work);
} else {
--
1.7.9.5
--
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