mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-24 08:40:53 +07:00
mfd: tps6586x: move regulator dt parsing to regulator driver
Moving regulator node parsing to regulator driver in place of parsing it on mfd driver. The motivation for this change are: - MFD core driver should not depends on regulator and able to instantiate device without regulator. - The API for matching regulators are in regulator core and it is good that regulator driver only calls this API. - Regulator specific support should be in regulator driver only to ease any enhancement/modification for regulators. - The regulator driver is now registered as mfd sub device and all regulator registration is done from single probe call. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Laxman Dewangan
Mark Brown
parent
77b67063bb
commit
64e481603a
@ -201,7 +201,6 @@ config MFD_TPS6586X
|
||||
depends on I2C=y && GENERIC_HARDIRQS
|
||||
select MFD_CORE
|
||||
select REGMAP_I2C
|
||||
depends on REGULATOR
|
||||
help
|
||||
If you say yes here you get support for the TPS6586X series of
|
||||
Power Management chips.
|
||||
|
||||
@ -24,8 +24,6 @@
|
||||
#include <linux/err.h>
|
||||
#include <linux/i2c.h>
|
||||
#include <linux/regmap.h>
|
||||
#include <linux/regulator/of_regulator.h>
|
||||
#include <linux/regulator/machine.h>
|
||||
|
||||
#include <linux/mfd/core.h>
|
||||
#include <linux/mfd/tps6586x.h>
|
||||
@ -98,6 +96,9 @@ static struct mfd_cell tps6586x_cell[] = {
|
||||
{
|
||||
.name = "tps6586x-gpio",
|
||||
},
|
||||
{
|
||||
.name = "tps6586x-pmic",
|
||||
},
|
||||
{
|
||||
.name = "tps6586x-rtc",
|
||||
},
|
||||
@ -350,80 +351,19 @@ static int __devinit tps6586x_add_subdevs(struct tps6586x *tps6586x,
|
||||
}
|
||||
|
||||
#ifdef CONFIG_OF
|
||||
static struct of_regulator_match tps6586x_matches[] = {
|
||||
{ .name = "sys", .driver_data = (void *)TPS6586X_ID_SYS },
|
||||
{ .name = "sm0", .driver_data = (void *)TPS6586X_ID_SM_0 },
|
||||
{ .name = "sm1", .driver_data = (void *)TPS6586X_ID_SM_1 },
|
||||
{ .name = "sm2", .driver_data = (void *)TPS6586X_ID_SM_2 },
|
||||
{ .name = "ldo0", .driver_data = (void *)TPS6586X_ID_LDO_0 },
|
||||
{ .name = "ldo1", .driver_data = (void *)TPS6586X_ID_LDO_1 },
|
||||
{ .name = "ldo2", .driver_data = (void *)TPS6586X_ID_LDO_2 },
|
||||
{ .name = "ldo3", .driver_data = (void *)TPS6586X_ID_LDO_3 },
|
||||
{ .name = "ldo4", .driver_data = (void *)TPS6586X_ID_LDO_4 },
|
||||
{ .name = "ldo5", .driver_data = (void *)TPS6586X_ID_LDO_5 },
|
||||
{ .name = "ldo6", .driver_data = (void *)TPS6586X_ID_LDO_6 },
|
||||
{ .name = "ldo7", .driver_data = (void *)TPS6586X_ID_LDO_7 },
|
||||
{ .name = "ldo8", .driver_data = (void *)TPS6586X_ID_LDO_8 },
|
||||
{ .name = "ldo9", .driver_data = (void *)TPS6586X_ID_LDO_9 },
|
||||
{ .name = "ldo_rtc", .driver_data = (void *)TPS6586X_ID_LDO_RTC },
|
||||
};
|
||||
|
||||
static struct tps6586x_platform_data *tps6586x_parse_dt(struct i2c_client *client)
|
||||
{
|
||||
const unsigned int num = ARRAY_SIZE(tps6586x_matches);
|
||||
struct device_node *np = client->dev.of_node;
|
||||
struct tps6586x_platform_data *pdata;
|
||||
struct tps6586x_subdev_info *devs;
|
||||
struct device_node *regs;
|
||||
const char *sys_rail_name = NULL;
|
||||
unsigned int count;
|
||||
unsigned int i, j;
|
||||
int err;
|
||||
|
||||
regs = of_find_node_by_name(np, "regulators");
|
||||
if (!regs)
|
||||
return NULL;
|
||||
|
||||
err = of_regulator_match(&client->dev, regs, tps6586x_matches, num);
|
||||
if (err < 0) {
|
||||
of_node_put(regs);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
of_node_put(regs);
|
||||
count = err;
|
||||
|
||||
devs = devm_kzalloc(&client->dev, count * sizeof(*devs), GFP_KERNEL);
|
||||
if (!devs)
|
||||
return NULL;
|
||||
|
||||
for (i = 0, j = 0; i < num && j < count; i++) {
|
||||
struct regulator_init_data *reg_idata;
|
||||
|
||||
if (!tps6586x_matches[i].init_data)
|
||||
continue;
|
||||
|
||||
reg_idata = tps6586x_matches[i].init_data;
|
||||
devs[j].name = "tps6586x-regulator";
|
||||
devs[j].platform_data = tps6586x_matches[i].init_data;
|
||||
devs[j].id = (int)tps6586x_matches[i].driver_data;
|
||||
if (devs[j].id == TPS6586X_ID_SYS)
|
||||
sys_rail_name = reg_idata->constraints.name;
|
||||
|
||||
if ((devs[j].id == TPS6586X_ID_LDO_5) ||
|
||||
(devs[j].id == TPS6586X_ID_LDO_RTC))
|
||||
reg_idata->supply_regulator = sys_rail_name;
|
||||
|
||||
devs[j].of_node = tps6586x_matches[i].of_node;
|
||||
j++;
|
||||
}
|
||||
|
||||
pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
|
||||
if (!pdata)
|
||||
if (!pdata) {
|
||||
dev_err(&client->dev, "Memory allocation failed\n");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
pdata->num_subdevs = count;
|
||||
pdata->subdevs = devs;
|
||||
pdata->num_subdevs = 0;
|
||||
pdata->subdevs = NULL;
|
||||
pdata->gpio_base = -1;
|
||||
pdata->irq_base = -1;
|
||||
pdata->pm_off = of_property_read_bool(np, "ti,system-power-controller");
|
||||
|
||||
@ -17,10 +17,12 @@
|
||||
#include <linux/module.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/err.h>
|
||||
#include <linux/of.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/regulator/driver.h>
|
||||
#include <linux/regulator/machine.h>
|
||||
#include <linux/regulator/of_regulator.h>
|
||||
#include <linux/mfd/tps6586x.h>
|
||||
|
||||
/* supply control and voltage setting */
|
||||
@ -255,10 +257,10 @@ static inline int tps6586x_regulator_preinit(struct device *parent,
|
||||
1 << ri->enable_bit[1]);
|
||||
}
|
||||
|
||||
static int tps6586x_regulator_set_slew_rate(struct platform_device *pdev)
|
||||
static int tps6586x_regulator_set_slew_rate(struct platform_device *pdev,
|
||||
int id, struct regulator_init_data *p)
|
||||
{
|
||||
struct device *parent = pdev->dev.parent;
|
||||
struct regulator_init_data *p = pdev->dev.platform_data;
|
||||
struct tps6586x_settings *setting = p->driver_data;
|
||||
uint8_t reg;
|
||||
|
||||
@ -269,7 +271,7 @@ static int tps6586x_regulator_set_slew_rate(struct platform_device *pdev)
|
||||
return 0;
|
||||
|
||||
/* only SM0 and SM1 can have the slew rate settings */
|
||||
switch (pdev->id) {
|
||||
switch (id) {
|
||||
case TPS6586X_ID_SM_0:
|
||||
reg = TPS6586X_SM0SL;
|
||||
break;
|
||||
@ -298,54 +300,181 @@ static inline struct tps6586x_regulator *find_regulator_info(int id)
|
||||
return NULL;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_OF
|
||||
static struct of_regulator_match tps6586x_matches[] = {
|
||||
{ .name = "sys", .driver_data = (void *)TPS6586X_ID_SYS },
|
||||
{ .name = "sm0", .driver_data = (void *)TPS6586X_ID_SM_0 },
|
||||
{ .name = "sm1", .driver_data = (void *)TPS6586X_ID_SM_1 },
|
||||
{ .name = "sm2", .driver_data = (void *)TPS6586X_ID_SM_2 },
|
||||
{ .name = "ldo0", .driver_data = (void *)TPS6586X_ID_LDO_0 },
|
||||
{ .name = "ldo1", .driver_data = (void *)TPS6586X_ID_LDO_1 },
|
||||
{ .name = "ldo2", .driver_data = (void *)TPS6586X_ID_LDO_2 },
|
||||
{ .name = "ldo3", .driver_data = (void *)TPS6586X_ID_LDO_3 },
|
||||
{ .name = "ldo4", .driver_data = (void *)TPS6586X_ID_LDO_4 },
|
||||
{ .name = "ldo5", .driver_data = (void *)TPS6586X_ID_LDO_5 },
|
||||
{ .name = "ldo6", .driver_data = (void *)TPS6586X_ID_LDO_6 },
|
||||
{ .name = "ldo7", .driver_data = (void *)TPS6586X_ID_LDO_7 },
|
||||
{ .name = "ldo8", .driver_data = (void *)TPS6586X_ID_LDO_8 },
|
||||
{ .name = "ldo9", .driver_data = (void *)TPS6586X_ID_LDO_9 },
|
||||
{ .name = "ldo_rtc", .driver_data = (void *)TPS6586X_ID_LDO_RTC },
|
||||
};
|
||||
|
||||
static struct tps6586x_platform_data *tps6586x_parse_regulator_dt(
|
||||
struct platform_device *pdev,
|
||||
struct of_regulator_match **tps6586x_reg_matches)
|
||||
{
|
||||
const unsigned int num = ARRAY_SIZE(tps6586x_matches);
|
||||
struct device_node *np = pdev->dev.parent->of_node;
|
||||
struct device_node *regs;
|
||||
const char *sys_rail = NULL;
|
||||
unsigned int i;
|
||||
struct tps6586x_platform_data *pdata;
|
||||
int err;
|
||||
|
||||
regs = of_find_node_by_name(np, "regulators");
|
||||
if (!regs) {
|
||||
dev_err(&pdev->dev, "regulator node not found\n");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
err = of_regulator_match(&pdev->dev, regs, tps6586x_matches, num);
|
||||
if (err < 0) {
|
||||
dev_err(&pdev->dev, "Regulator match failed, e %d\n", err);
|
||||
of_node_put(regs);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
of_node_put(regs);
|
||||
|
||||
pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
|
||||
if (!pdata) {
|
||||
dev_err(&pdev->dev, "Memory alloction failed\n");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
for (i = 0; i < num; i++) {
|
||||
int id;
|
||||
if (!tps6586x_matches[i].init_data)
|
||||
continue;
|
||||
|
||||
pdata->reg_init_data[i] = tps6586x_matches[i].init_data;
|
||||
id = (int)tps6586x_matches[i].driver_data;
|
||||
if (id == TPS6586X_ID_SYS)
|
||||
sys_rail = pdata->reg_init_data[i]->constraints.name;
|
||||
|
||||
if ((id == TPS6586X_ID_LDO_5) || (id == TPS6586X_ID_LDO_RTC))
|
||||
pdata->reg_init_data[i]->supply_regulator = sys_rail;
|
||||
}
|
||||
*tps6586x_reg_matches = tps6586x_matches;
|
||||
return pdata;
|
||||
}
|
||||
#else
|
||||
static struct tps6586x_platform_data *tps6586x_parse_regulator_dt(
|
||||
struct platform_device *pdev,
|
||||
struct of_regulator_match **tps6586x_reg_matches)
|
||||
{
|
||||
*tps6586x_reg_matches = NULL;
|
||||
return NULL;
|
||||
}
|
||||
#endif
|
||||
|
||||
static int __devinit tps6586x_regulator_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct tps6586x_regulator *ri = NULL;
|
||||
struct regulator_config config = { };
|
||||
struct regulator_dev *rdev;
|
||||
int id = pdev->id;
|
||||
struct regulator_dev **rdev;
|
||||
struct regulator_init_data *reg_data;
|
||||
struct tps6586x_platform_data *pdata;
|
||||
struct of_regulator_match *tps6586x_reg_matches = NULL;
|
||||
int id;
|
||||
int err;
|
||||
|
||||
dev_dbg(&pdev->dev, "Probing regulator %d\n", id);
|
||||
|
||||
ri = find_regulator_info(id);
|
||||
if (ri == NULL) {
|
||||
dev_err(&pdev->dev, "invalid regulator ID specified\n");
|
||||
return -EINVAL;
|
||||
pdata = dev_get_platdata(pdev->dev.parent);
|
||||
if ((!pdata) && (pdev->dev.parent->of_node))
|
||||
pdata = tps6586x_parse_regulator_dt(pdev,
|
||||
&tps6586x_reg_matches);
|
||||
|
||||
if (!pdata) {
|
||||
dev_err(&pdev->dev, "Platform data not available, exiting\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
err = tps6586x_regulator_preinit(pdev->dev.parent, ri);
|
||||
if (err)
|
||||
return err;
|
||||
rdev = devm_kzalloc(&pdev->dev, TPS6586X_ID_MAX_REGULATOR *
|
||||
sizeof(*rdev), GFP_KERNEL);
|
||||
if (!rdev) {
|
||||
dev_err(&pdev->dev, "Mmemory alloc failed\n");
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
config.dev = pdev->dev.parent;
|
||||
config.of_node = pdev->dev.of_node;
|
||||
config.init_data = pdev->dev.platform_data;
|
||||
config.driver_data = ri;
|
||||
for (id = 0; id < TPS6586X_ID_MAX_REGULATOR; ++id) {
|
||||
reg_data = pdata->reg_init_data[id];
|
||||
|
||||
rdev = regulator_register(&ri->desc, &config);
|
||||
if (IS_ERR(rdev)) {
|
||||
dev_err(&pdev->dev, "failed to register regulator %s\n",
|
||||
ri->desc.name);
|
||||
return PTR_ERR(rdev);
|
||||
ri = find_regulator_info(id);
|
||||
if (!ri) {
|
||||
dev_err(&pdev->dev, "invalid regulator ID specified\n");
|
||||
err = -EINVAL;
|
||||
goto fail;
|
||||
}
|
||||
|
||||
err = tps6586x_regulator_preinit(pdev->dev.parent, ri);
|
||||
if (err) {
|
||||
dev_err(&pdev->dev,
|
||||
"regulator %d preinit failed, e %d\n", id, err);
|
||||
goto fail;
|
||||
}
|
||||
|
||||
config.dev = pdev->dev.parent;
|
||||
config.init_data = reg_data;
|
||||
config.driver_data = ri;
|
||||
|
||||
if (tps6586x_reg_matches)
|
||||
config.of_node = tps6586x_reg_matches[id].of_node;
|
||||
|
||||
rdev[id] = regulator_register(&ri->desc, &config);
|
||||
if (IS_ERR(rdev[id])) {
|
||||
dev_err(&pdev->dev, "failed to register regulator %s\n",
|
||||
ri->desc.name);
|
||||
err = PTR_ERR(rdev[id]);
|
||||
goto fail;
|
||||
}
|
||||
|
||||
if (reg_data) {
|
||||
err = tps6586x_regulator_set_slew_rate(pdev, id,
|
||||
reg_data);
|
||||
if (err < 0) {
|
||||
dev_err(&pdev->dev,
|
||||
"Slew rate config failed, e %d\n", err);
|
||||
regulator_unregister(rdev[id]);
|
||||
goto fail;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
platform_set_drvdata(pdev, rdev);
|
||||
return 0;
|
||||
|
||||
return tps6586x_regulator_set_slew_rate(pdev);
|
||||
fail:
|
||||
while (--id >= 0)
|
||||
regulator_unregister(rdev[id]);
|
||||
return err;
|
||||
}
|
||||
|
||||
static int __devexit tps6586x_regulator_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct regulator_dev *rdev = platform_get_drvdata(pdev);
|
||||
struct regulator_dev **rdev = platform_get_drvdata(pdev);
|
||||
int id = TPS6586X_ID_MAX_REGULATOR;
|
||||
|
||||
while (--id >= 0)
|
||||
regulator_unregister(rdev[id]);
|
||||
|
||||
regulator_unregister(rdev);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver tps6586x_regulator_driver = {
|
||||
.driver = {
|
||||
.name = "tps6586x-regulator",
|
||||
.name = "tps6586x-pmic",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = tps6586x_regulator_probe,
|
||||
|
||||
@ -29,6 +29,7 @@ enum {
|
||||
TPS6586X_ID_LDO_8,
|
||||
TPS6586X_ID_LDO_9,
|
||||
TPS6586X_ID_LDO_RTC,
|
||||
TPS6586X_ID_MAX_REGULATOR,
|
||||
};
|
||||
|
||||
enum {
|
||||
@ -79,6 +80,8 @@ struct tps6586x_platform_data {
|
||||
int gpio_base;
|
||||
int irq_base;
|
||||
bool pm_off;
|
||||
|
||||
struct regulator_init_data *reg_init_data[TPS6586X_ID_MAX_REGULATOR];
|
||||
};
|
||||
|
||||
/*
|
||||
|
||||
Loading…
Reference in New Issue
Block a user