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regulator: stpmic1: Simplify regulators registration

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Stop using a regulator_init callback. This leads to a more simple regulator
registration code. This also permits to spuress struct stpmic1_regulator.
Also rename stpmic1_regulators_matches to stpmic1_matches.

Signed-off-by: pascal paillet <p.paillet@st.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Pascal PAILLET-LME 2019-02-19 10:04:32 +00:00 committed by Mark Brown
parent cde999e2a7
commit 8c44e44858
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0
1 changed files with 52 additions and 116 deletions
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168
drivers/regulator/stpmic1_regulator.c
View file

@ -15,7 +15,7 @@
#include <dt-bindings/mfd/st,stpmic1.h>
/**
* stpmic1 regulator description
* stpmic1 regulator description: this structure is used as driver data
* @desc: regulator framework description
* @mask_reset_reg: mask reset register address
* @mask_reset_mask: mask rank and mask reset register mask
@ -30,24 +30,9 @@ struct stpmic1_regulator_cfg {
u8 icc_mask;
};
/**
* stpmic1 regulator data: this structure is used as driver data
* @reg_node: DT node of regulator (unused on non-DT platforms)
* @cfg: stpmic specific regulator description
* @mask_reset: mask_reset bit value
* @irq_curlim: current limit interrupt number
*/
struct stpmic1_regulator {
struct device_node *reg_node;
const struct stpmic1_regulator_cfg *cfg;
u8 mask_reset;
int irq_curlim;
};
static int stpmic1_set_mode(struct regulator_dev *rdev, unsigned int mode);
static unsigned int stpmic1_get_mode(struct regulator_dev *rdev);
static int stpmic1_set_icc(struct regulator_dev *rdev);
static int stpmic1_regulator_parse_dt(void *driver_data);
static unsigned int stpmic1_map_mode(unsigned int mode);
enum {
@ -439,8 +424,9 @@ static unsigned int stpmic1_map_mode(unsigned int mode)
static unsigned int stpmic1_get_mode(struct regulator_dev *rdev)
{
int value;
struct regmap *regmap = rdev_get_regmap(rdev);
regmap_read(rdev->regmap, rdev->desc->enable_reg, &value);
regmap_read(regmap, rdev->desc->enable_reg, &value);
if (value & STPMIC1_BUCK_MODE_LP)
return REGULATOR_MODE_STANDBY;
@ -451,6 +437,7 @@ static unsigned int stpmic1_get_mode(struct regulator_dev *rdev)
static int stpmic1_set_mode(struct regulator_dev *rdev, unsigned int mode)
{
int value;
struct regmap *regmap = rdev_get_regmap(rdev);
switch (mode) {
case REGULATOR_MODE_NORMAL:
@ -463,18 +450,18 @@ static int stpmic1_set_mode(struct regulator_dev *rdev, unsigned int mode)
return -EINVAL;
}
return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
return regmap_update_bits(regmap, rdev->desc->enable_reg,
STPMIC1_BUCK_MODE_LP, value);
}
static int stpmic1_set_icc(struct regulator_dev *rdev)
{
struct stpmic1_regulator *regul = rdev_get_drvdata(rdev);
struct stpmic1_regulator_cfg *cfg = rdev_get_drvdata(rdev);
struct regmap *regmap = rdev_get_regmap(rdev);
/* enable switch off in case of over current */
return regmap_update_bits(regmap, regul->cfg->icc_reg,
regul->cfg->icc_mask, regul->cfg->icc_mask);
return regmap_update_bits(regmap, cfg->icc_reg, cfg->icc_mask,
cfg->icc_mask);
}
static irqreturn_t stpmic1_curlim_irq_handler(int irq, void *data)
@ -493,47 +480,13 @@ static irqreturn_t stpmic1_curlim_irq_handler(int irq, void *data)
return IRQ_HANDLED;
}
static int stpmic1_regulator_init(struct platform_device *pdev,
struct regulator_dev *rdev)
{
struct stpmic1_regulator *regul = rdev_get_drvdata(rdev);
struct regmap *regmap = rdev_get_regmap(rdev);
int ret = 0;
/* set mask reset */
if (regul->mask_reset && regul->cfg->mask_reset_reg != 0) {
ret = regmap_update_bits(regmap,
regul->cfg->mask_reset_reg,
regul->cfg->mask_reset_mask,
regul->cfg->mask_reset_mask);
if (ret) {
dev_err(&pdev->dev, "set mask reset failed\n");
return ret;
}
}
/* setup an irq handler for over-current detection */
if (regul->irq_curlim > 0) {
ret = devm_request_threaded_irq(&pdev->dev,
regul->irq_curlim, NULL,
stpmic1_curlim_irq_handler,
IRQF_ONESHOT | IRQF_SHARED,
pdev->name, rdev);
if (ret) {
dev_err(&pdev->dev, "Request IRQ failed\n");
return ret;
}
}
return 0;
}
#define MATCH(_name, _id) \
[STPMIC1_##_id] = { \
.name = #_name, \
.desc = &stpmic1_regulator_cfgs[STPMIC1_##_id].desc, \
}
static struct of_regulator_match stpmic1_regulators_matches[] = {
static struct of_regulator_match stpmic1_matches[] = {
MATCH(buck1, BUCK1),
MATCH(buck2, BUCK2),
MATCH(buck3, BUCK3),
@ -550,92 +503,75 @@ static struct of_regulator_match stpmic1_regulators_matches[] = {
MATCH(pwr_sw2, SW_OUT),
};
static int stpmic1_regulator_parse_dt(void *driver_data)
{
struct stpmic1_regulator *regul =
(struct stpmic1_regulator *)driver_data;
if (!regul)
return -EINVAL;
if (of_get_property(regul->reg_node, "st,mask-reset", NULL))
regul->mask_reset = 1;
regul->irq_curlim = of_irq_get(regul->reg_node, 0);
return 0;
}
static struct
regulator_dev *stpmic1_regulator_register(struct platform_device *pdev, int id,
struct regulator_init_data *init_data,
struct stpmic1_regulator *regul)
static int stpmic1_regulator_register(struct platform_device *pdev, int id,
struct of_regulator_match *match,
const struct stpmic1_regulator_cfg *cfg)
{
struct stpmic1 *pmic_dev = dev_get_drvdata(pdev->dev.parent);
struct regulator_dev *rdev;
struct regulator_config config = {};
int ret = 0;
int irq;
config.dev = &pdev->dev;
config.init_data = init_data;
config.of_node = stpmic1_regulators_matches[id].of_node;
config.init_data = match->init_data;
config.of_node = match->of_node;
config.regmap = pmic_dev->regmap;
config.driver_data = regul;
config.driver_data = (void *)cfg;
regul->reg_node = config.of_node;
regul->cfg = &stpmic1_regulator_cfgs[id];
rdev = devm_regulator_register(&pdev->dev, &regul->cfg->desc, &config);
rdev = devm_regulator_register(&pdev->dev, &cfg->desc, &config);
if (IS_ERR(rdev)) {
dev_err(&pdev->dev, "failed to register %s regulator\n",
regul->cfg->desc.name);
cfg->desc.name);
return PTR_ERR(rdev);
}
return rdev;
/* set mask reset */
if (of_get_property(config.of_node, "st,mask-reset", NULL) &&
cfg->mask_reset_reg != 0) {
ret = regmap_update_bits(pmic_dev->regmap,
cfg->mask_reset_reg,
cfg->mask_reset_mask,
cfg->mask_reset_mask);
if (ret) {
dev_err(&pdev->dev, "set mask reset failed\n");
return ret;
}
}
/* setup an irq handler for over-current detection */
irq = of_irq_get(config.of_node, 0);
if (irq > 0) {
ret = devm_request_threaded_irq(&pdev->dev,
irq, NULL,
stpmic1_curlim_irq_handler,
IRQF_ONESHOT | IRQF_SHARED,
pdev->name, rdev);
if (ret) {
dev_err(&pdev->dev, "Request IRQ failed\n");
return ret;
}
}
return 0;
}
static int stpmic1_regulator_probe(struct platform_device *pdev)
{
struct regulator_dev *rdev;
struct stpmic1_regulator *regul;
struct regulator_init_data *init_data;
struct device_node *np;
int i, ret;
np = pdev->dev.of_node;
ret = of_regulator_match(&pdev->dev, np,
stpmic1_regulators_matches,
ARRAY_SIZE(stpmic1_regulators_matches));
ret = of_regulator_match(&pdev->dev, pdev->dev.of_node, stpmic1_matches,
ARRAY_SIZE(stpmic1_matches));
if (ret < 0) {
dev_err(&pdev->dev,
"Error in PMIC regulator device tree node");
return ret;
}
regul = devm_kzalloc(&pdev->dev, ARRAY_SIZE(stpmic1_regulator_cfgs) *
sizeof(struct stpmic1_regulator),
GFP_KERNEL);
if (!regul)
return -ENOMEM;
for (i = 0; i < ARRAY_SIZE(stpmic1_regulator_cfgs); i++) {
/* Parse DT & find regulators to register */
init_data = stpmic1_regulators_matches[i].init_data;
if (init_data)
init_data->regulator_init = &stpmic1_regulator_parse_dt;
rdev = stpmic1_regulator_register(pdev, i, init_data, regul);
if (IS_ERR(rdev))
return PTR_ERR(rdev);
ret = stpmic1_regulator_init(pdev, rdev);
if (ret) {
dev_err(&pdev->dev,
"failed to initialize regulator %d\n", ret);
ret = stpmic1_regulator_register(pdev, i, &stpmic1_matches[i],
&stpmic1_regulator_cfgs[i]);
if (ret < 0)
return ret;
}
regul++;
}
dev_dbg(&pdev->dev, "stpmic1_regulator driver probed\n");