[PATCH V2 5/6] regulator: palmas: Simplify code by not indexing regulator_desc unnecessarily

From: Nishanth Menon
Date: Mon Jun 30 2014 - 11:58:14 EST

Palmas regulator needs to full up the regulator_desc based on PMIC and
type of regulator. However, we dont need to do desc[id] every time. we
can simplify by using a pointer to desc[id] and filling up the
parameters.

Signed-off-by: Nishanth Menon <nm@xxxxxx>
---
drivers/regulator/palmas-regulator.c | 248 +++++++++++++++-------------------
1 file changed, 112 insertions(+), 136 deletions(-)

diff --git a/drivers/regulator/palmas-regulator.c b/drivers/regulator/palmas-regulator.c
index d6b734f..ae0f639 100644
--- a/drivers/regulator/palmas-regulator.c
+++ b/drivers/regulator/palmas-regulator.c
@@ -866,6 +866,7 @@ static int palmas_ldo_registration(struct palmas_pmic *pmic,
struct regulator_dev *rdev;
struct palmas_reg_init *reg_init;
struct palmas_regs_info *rinfo;
+ struct regulator_desc *desc;

for (id = ddata->ldo_begin; id < ddata->max_reg; id++) {
if (pdata && pdata->reg_init[id])
@@ -879,57 +880,51 @@ static int palmas_ldo_registration(struct palmas_pmic *pmic,
*/

/* Register the regulators */
- pmic->desc[id].name = rinfo->name;
- pmic->desc[id].id = id;
- pmic->desc[id].type = REGULATOR_VOLTAGE;
- pmic->desc[id].owner = THIS_MODULE;
+ desc = &pmic->desc[id];
+ desc->name = rinfo->name;
+ desc->id = id;
+ desc->type = REGULATOR_VOLTAGE;
+ desc->owner = THIS_MODULE;

if (id < PALMAS_REG_REGEN1) {
- pmic->desc[id].n_voltages = PALMAS_LDO_NUM_VOLTAGES;
+ desc->n_voltages = PALMAS_LDO_NUM_VOLTAGES;
if (reg_init && reg_init->roof_floor)
- pmic->desc[id].ops =
- &palmas_ops_ext_control_ldo;
+ desc->ops = &palmas_ops_ext_control_ldo;
else
- pmic->desc[id].ops = &palmas_ops_ldo;
- pmic->desc[id].min_uV = 900000;
- pmic->desc[id].uV_step = 50000;
- pmic->desc[id].linear_min_sel = 1;
- pmic->desc[id].enable_time = 500;
- pmic->desc[id].vsel_reg =
- PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
- rinfo->vsel_addr);
- pmic->desc[id].vsel_mask =
- PALMAS_LDO1_VOLTAGE_VSEL_MASK;
- pmic->desc[id].enable_reg =
- PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
- rinfo->ctrl_addr);
- pmic->desc[id].enable_mask =
- PALMAS_LDO1_CTRL_MODE_ACTIVE;
+ desc->ops = &palmas_ops_ldo;
+ desc->min_uV = 900000;
+ desc->uV_step = 50000;
+ desc->linear_min_sel = 1;
+ desc->enable_time = 500;
+ desc->vsel_reg = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
+ rinfo->vsel_addr);
+ desc->vsel_mask = PALMAS_LDO1_VOLTAGE_VSEL_MASK;
+ desc->enable_reg = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
+ rinfo->ctrl_addr);
+ desc->enable_mask = PALMAS_LDO1_CTRL_MODE_ACTIVE;

/* Check if LDO8 is in tracking mode or not */
if (pdata && (id == PALMAS_REG_LDO8) &&
pdata->enable_ldo8_tracking) {
palmas_enable_ldo8_track(pmic->palmas);
- pmic->desc[id].min_uV = 450000;
- pmic->desc[id].uV_step = 25000;
+ desc->min_uV = 450000;
+ desc->uV_step = 25000;
}

/* LOD6 in vibrator mode will have enable time 2000us */
if (pdata && pdata->ldo6_vibrator &&
(id == PALMAS_REG_LDO6))
- pmic->desc[id].enable_time = 2000;
+ desc->enable_time = 2000;
} else {
- pmic->desc[id].n_voltages = 1;
+ desc->n_voltages = 1;
if (reg_init && reg_init->roof_floor)
- pmic->desc[id].ops =
- &palmas_ops_ext_control_extreg;
+ desc->ops = &palmas_ops_ext_control_extreg;
else
- pmic->desc[id].ops = &palmas_ops_extreg;
- pmic->desc[id].enable_reg =
+ desc->ops = &palmas_ops_extreg;
+ desc->enable_reg =
PALMAS_BASE_TO_REG(PALMAS_RESOURCE_BASE,
rinfo->ctrl_addr);
- pmic->desc[id].enable_mask =
- PALMAS_REGEN1_CTRL_MODE_ACTIVE;
+ desc->enable_mask = PALMAS_REGEN1_CTRL_MODE_ACTIVE;
}

if (pdata)
@@ -937,11 +932,10 @@ static int palmas_ldo_registration(struct palmas_pmic *pmic,
else
config.init_data = NULL;

- pmic->desc[id].supply_name = rinfo->sname;
+ desc->supply_name = rinfo->sname;
config.of_node = ddata->palmas_matches[id].of_node;

- rdev = devm_regulator_register(pmic->dev, &pmic->desc[id],
- &config);
+ rdev = devm_regulator_register(pmic->dev, desc, &config);
if (IS_ERR(rdev)) {
dev_err(pmic->dev,
"failed to register %s regulator\n",
@@ -981,6 +975,7 @@ static int tps65917_ldo_registration(struct palmas_pmic *pmic,
struct regulator_dev *rdev;
struct palmas_reg_init *reg_init;
struct palmas_regs_info *rinfo;
+ struct regulator_desc *desc;

for (id = ddata->ldo_begin; id < ddata->max_reg; id++) {
if (pdata && pdata->reg_init[id])
@@ -994,49 +989,43 @@ static int tps65917_ldo_registration(struct palmas_pmic *pmic,
rinfo = &ddata->palmas_regs_info[id];

/* Register the regulators */
- pmic->desc[id].name = rinfo->name;
- pmic->desc[id].id = id;
- pmic->desc[id].type = REGULATOR_VOLTAGE;
- pmic->desc[id].owner = THIS_MODULE;
+ desc = &pmic->desc[id];
+ desc->name = rinfo->name;
+ desc->id = id;
+ desc->type = REGULATOR_VOLTAGE;
+ desc->owner = THIS_MODULE;

if (id < TPS65917_REG_REGEN1) {
- pmic->desc[id].n_voltages = PALMAS_LDO_NUM_VOLTAGES;
+ desc->n_voltages = PALMAS_LDO_NUM_VOLTAGES;
if (reg_init && reg_init->roof_floor)
- pmic->desc[id].ops =
- &palmas_ops_ext_control_ldo;
+ desc->ops = &palmas_ops_ext_control_ldo;
else
- pmic->desc[id].ops = &tps65917_ops_ldo;
- pmic->desc[id].min_uV = 900000;
- pmic->desc[id].uV_step = 50000;
- pmic->desc[id].linear_min_sel = 1;
- pmic->desc[id].enable_time = 500;
- pmic->desc[id].vsel_reg =
- PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
- rinfo->vsel_addr);
- pmic->desc[id].vsel_mask =
- PALMAS_LDO1_VOLTAGE_VSEL_MASK;
- pmic->desc[id].enable_reg =
- PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
- rinfo->ctrl_addr);
- pmic->desc[id].enable_mask =
- PALMAS_LDO1_CTRL_MODE_ACTIVE;
+ desc->ops = &tps65917_ops_ldo;
+ desc->min_uV = 900000;
+ desc->uV_step = 50000;
+ desc->linear_min_sel = 1;
+ desc->enable_time = 500;
+ desc->vsel_reg = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
+ rinfo->vsel_addr);
+ desc->vsel_mask = PALMAS_LDO1_VOLTAGE_VSEL_MASK;
+ desc->enable_reg = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
+ rinfo->ctrl_addr);
+ desc->enable_mask = PALMAS_LDO1_CTRL_MODE_ACTIVE;
/*
* To be confirmed. Discussion on going with PMIC Team.
* It is of the order of ~60mV/uS.
*/
- pmic->desc[id].ramp_delay = 2500;
+ desc->ramp_delay = 2500;
} else {
- pmic->desc[id].n_voltages = 1;
+ desc->n_voltages = 1;
if (reg_init && reg_init->roof_floor)
- pmic->desc[id].ops =
- &palmas_ops_ext_control_extreg;
+ desc->ops = &palmas_ops_ext_control_extreg;
else
- pmic->desc[id].ops = &palmas_ops_extreg;
- pmic->desc[id].enable_reg =
+ desc->ops = &palmas_ops_extreg;
+ desc->enable_reg =
PALMAS_BASE_TO_REG(PALMAS_RESOURCE_BASE,
rinfo->ctrl_addr);
- pmic->desc[id].enable_mask =
- PALMAS_REGEN1_CTRL_MODE_ACTIVE;
+ desc->enable_mask = PALMAS_REGEN1_CTRL_MODE_ACTIVE;
}

if (pdata)
@@ -1044,11 +1033,10 @@ static int tps65917_ldo_registration(struct palmas_pmic *pmic,
else
config.init_data = NULL;

- pmic->desc[id].supply_name = rinfo->sname;
+ desc->supply_name = rinfo->sname;
config.of_node = ddata->palmas_matches[id].of_node;

- rdev = devm_regulator_register(pmic->dev, &pmic->desc[id],
- &config);
+ rdev = devm_regulator_register(pmic->dev, desc, &config);
if (IS_ERR(rdev)) {
dev_err(pmic->dev,
"failed to register %s regulator\n",
@@ -1089,6 +1077,7 @@ static int palmas_smps_registration(struct palmas_pmic *pmic,
struct regulator_dev *rdev;
struct palmas_reg_init *reg_init;
struct palmas_regs_info *rinfo;
+ struct regulator_desc *desc;

for (id = ddata->smps_start; id <= ddata->smps_end; id++) {
bool ramp_delay_support = false;
@@ -1128,6 +1117,7 @@ static int palmas_smps_registration(struct palmas_pmic *pmic,
continue;
}
rinfo = &ddata->palmas_regs_info[id];
+ desc = &pmic->desc[id];

if ((id == PALMAS_REG_SMPS6) || (id == PALMAS_REG_SMPS8))
ramp_delay_support = true;
@@ -1140,9 +1130,8 @@ static int palmas_smps_registration(struct palmas_pmic *pmic,
"reading TSTEP reg failed: %d\n", ret);
return ret;
}
- pmic->desc[id].ramp_delay =
- palmas_smps_ramp_delay[reg & 0x3];
- pmic->ramp_delay[id] = pmic->desc[id].ramp_delay;
+ desc->ramp_delay = palmas_smps_ramp_delay[reg & 0x3];
+ pmic->ramp_delay[id] = desc->ramp_delay;
}

/* Initialise sleep/init values from platform data */
@@ -1156,31 +1145,28 @@ static int palmas_smps_registration(struct palmas_pmic *pmic,
}

/* Register the regulators */
- pmic->desc[id].name = rinfo->name;
- pmic->desc[id].id = id;
+ desc->name = rinfo->name;
+ desc->id = id;

switch (id) {
case PALMAS_REG_SMPS10_OUT1:
case PALMAS_REG_SMPS10_OUT2:
- pmic->desc[id].n_voltages = PALMAS_SMPS10_NUM_VOLTAGES;
- pmic->desc[id].ops = &palmas_ops_smps10;
- pmic->desc[id].vsel_reg =
- PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
- PALMAS_SMPS10_CTRL);
- pmic->desc[id].vsel_mask = SMPS10_VSEL;
- pmic->desc[id].enable_reg =
- PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
- PALMAS_SMPS10_CTRL);
+ desc->n_voltages = PALMAS_SMPS10_NUM_VOLTAGES;
+ desc->ops = &palmas_ops_smps10;
+ desc->vsel_reg = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
+ PALMAS_SMPS10_CTRL);
+ desc->vsel_mask = SMPS10_VSEL;
+ desc->enable_reg = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
+ PALMAS_SMPS10_CTRL);
if (id == PALMAS_REG_SMPS10_OUT1)
- pmic->desc[id].enable_mask = SMPS10_SWITCH_EN;
+ desc->enable_mask = SMPS10_SWITCH_EN;
else
- pmic->desc[id].enable_mask = SMPS10_BOOST_EN;
- pmic->desc[id].bypass_reg =
- PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
- PALMAS_SMPS10_CTRL);
- pmic->desc[id].bypass_mask = SMPS10_BYPASS_EN;
- pmic->desc[id].min_uV = 3750000;
- pmic->desc[id].uV_step = 1250000;
+ desc->enable_mask = SMPS10_BOOST_EN;
+ desc->bypass_reg = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
+ PALMAS_SMPS10_CTRL);
+ desc->bypass_mask = SMPS10_BYPASS_EN;
+ desc->min_uV = 3750000;
+ desc->uV_step = 1250000;
break;
default:
/*
@@ -1190,7 +1176,7 @@ static int palmas_smps_registration(struct palmas_pmic *pmic,
* ranges. Read the current smps mode for later use.
*/
addr = rinfo->vsel_addr;
- pmic->desc[id].n_linear_ranges = 3;
+ desc->n_linear_ranges = 3;

ret = palmas_smps_read(pmic->palmas, addr, &reg);
if (ret)
@@ -1198,21 +1184,18 @@ static int palmas_smps_registration(struct palmas_pmic *pmic,
if (reg & PALMAS_SMPS12_VOLTAGE_RANGE)
pmic->range[id] = 1;
if (pmic->range[id])
- pmic->desc[id].linear_ranges = smps_high_ranges;
+ desc->linear_ranges = smps_high_ranges;
else
- pmic->desc[id].linear_ranges = smps_low_ranges;
+ desc->linear_ranges = smps_low_ranges;

if (reg_init && reg_init->roof_floor)
- pmic->desc[id].ops =
- &palmas_ops_ext_control_smps;
+ desc->ops = &palmas_ops_ext_control_smps;
else
- pmic->desc[id].ops = &palmas_ops_smps;
- pmic->desc[id].n_voltages = PALMAS_SMPS_NUM_VOLTAGES;
- pmic->desc[id].vsel_reg =
- PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
- rinfo->vsel_addr);
- pmic->desc[id].vsel_mask =
- PALMAS_SMPS12_VOLTAGE_VSEL_MASK;
+ desc->ops = &palmas_ops_smps;
+ desc->n_voltages = PALMAS_SMPS_NUM_VOLTAGES;
+ desc->vsel_reg = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
+ rinfo->vsel_addr);
+ desc->vsel_mask = PALMAS_SMPS12_VOLTAGE_VSEL_MASK;

/* Read the smps mode for later use. */
addr = rinfo->ctrl_addr;
@@ -1222,28 +1205,25 @@ static int palmas_smps_registration(struct palmas_pmic *pmic,
pmic->current_reg_mode[id] = reg &
PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;

- pmic->desc[id].enable_reg =
- PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
- rinfo->ctrl_addr);
- pmic->desc[id].enable_mask =
- PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
+ desc->enable_reg = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
+ rinfo->ctrl_addr);
+ desc->enable_mask = PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
/* set_mode overrides this value */
- pmic->desc[id].enable_val = SMPS_CTRL_MODE_ON;
+ desc->enable_val = SMPS_CTRL_MODE_ON;
}

- pmic->desc[id].type = REGULATOR_VOLTAGE;
- pmic->desc[id].owner = THIS_MODULE;
+ desc->type = REGULATOR_VOLTAGE;
+ desc->owner = THIS_MODULE;

if (pdata)
config.init_data = pdata->reg_data[id];
else
config.init_data = NULL;

- pmic->desc[id].supply_name = rinfo->sname;
+ desc->supply_name = rinfo->sname;
config.of_node = ddata->palmas_matches[id].of_node;

- rdev = devm_regulator_register(pmic->dev, &pmic->desc[id],
- &config);
+ rdev = devm_regulator_register(pmic->dev, desc, &config);
if (IS_ERR(rdev)) {
dev_err(pmic->dev,
"failed to register %s regulator\n",
@@ -1269,13 +1249,15 @@ static int tps65917_smps_registration(struct palmas_pmic *pmic,
struct regulator_dev *rdev;
struct palmas_reg_init *reg_init;
struct palmas_regs_info *rinfo;
+ struct regulator_desc *desc;

for (id = ddata->smps_start; id <= ddata->smps_end; id++) {
/*
* Miss out regulators which are not available due
* to slaving configurations.
*/
- pmic->desc[id].n_linear_ranges = 3;
+ desc = &pmic->desc[id];
+ desc->n_linear_ranges = 3;
if ((id == TPS65917_REG_SMPS2) && pmic->smps12)
continue;

@@ -1291,8 +1273,8 @@ static int tps65917_smps_registration(struct palmas_pmic *pmic,
rinfo = &ddata->palmas_regs_info[id];

/* Register the regulators */
- pmic->desc[id].name = rinfo->name;
- pmic->desc[id].id = id;
+ desc->name = rinfo->name;
+ desc->id = id;

/*
* Read and store the RANGE bit for later use
@@ -1309,24 +1291,19 @@ static int tps65917_smps_registration(struct palmas_pmic *pmic,
pmic->range[id] = 1;

if (pmic->range[id])
- pmic->desc[id].linear_ranges = smps_high_ranges;
- else
- pmic->desc[id].linear_ranges = smps_low_ranges;
-
+ desc->linear_ranges = smps_high_ranges;
+ else
+ desc->linear_ranges = smps_low_ranges;

if (reg_init && reg_init->roof_floor)
- pmic->desc[id].ops =
- &tps65917_ops_ext_control_smps;
+ desc->ops = &tps65917_ops_ext_control_smps;
else
- pmic->desc[id].ops = &tps65917_ops_smps;
- pmic->desc[id].n_voltages = PALMAS_SMPS_NUM_VOLTAGES;
- pmic->desc[id].vsel_reg =
- PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
- rinfo->vsel_addr);
- pmic->desc[id].vsel_mask =
- PALMAS_SMPS12_VOLTAGE_VSEL_MASK;
-
- pmic->desc[id].ramp_delay = 2500;
+ desc->ops = &tps65917_ops_smps;
+ desc->n_voltages = PALMAS_SMPS_NUM_VOLTAGES;
+ desc->vsel_reg = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
+ rinfo->vsel_addr);
+ desc->vsel_mask = PALMAS_SMPS12_VOLTAGE_VSEL_MASK;
+ desc->ramp_delay = 2500;

/* Read the smps mode for later use. */
addr = rinfo->ctrl_addr;
@@ -1336,19 +1313,18 @@ static int tps65917_smps_registration(struct palmas_pmic *pmic,
pmic->current_reg_mode[id] = reg &
PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;

- pmic->desc[id].type = REGULATOR_VOLTAGE;
- pmic->desc[id].owner = THIS_MODULE;
+ desc->type = REGULATOR_VOLTAGE;
+ desc->owner = THIS_MODULE;

if (pdata)
config.init_data = pdata->reg_data[id];
else
config.init_data = NULL;

- pmic->desc[id].supply_name = rinfo->sname;
+ desc->supply_name = rinfo->sname;
config.of_node = ddata->palmas_matches[id].of_node;

- rdev = devm_regulator_register(pmic->dev, &pmic->desc[id],
- &config);
+ rdev = devm_regulator_register(pmic->dev, desc, &config);
if (IS_ERR(rdev)) {
dev_err(pmic->dev,
"failed to register %s regulator\n",
--
1.7.9.5

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