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path: root/drivers/regulator/db8500-prcmu.c
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Diffstat (limited to 'drivers/regulator/db8500-prcmu.c')
-rw-r--r--drivers/regulator/db8500-prcmu.c237
1 files changed, 122 insertions, 115 deletions
diff --git a/drivers/regulator/db8500-prcmu.c b/drivers/regulator/db8500-prcmu.c
index 515443fcd26..617c1adca81 100644
--- a/drivers/regulator/db8500-prcmu.c
+++ b/drivers/regulator/db8500-prcmu.c
@@ -17,75 +17,14 @@
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/db8500-prcmu.h>
+#include <linux/regulator/of_regulator.h>
+#include <linux/of.h>
#include <linux/module.h>
-
-/*
- * power state reference count
- */
-static int power_state_active_cnt; /* will initialize to zero */
-static DEFINE_SPINLOCK(power_state_active_lock);
-
-static void power_state_active_enable(void)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&power_state_active_lock, flags);
- power_state_active_cnt++;
- spin_unlock_irqrestore(&power_state_active_lock, flags);
-}
-
-static int power_state_active_disable(void)
-{
- int ret = 0;
- unsigned long flags;
-
- spin_lock_irqsave(&power_state_active_lock, flags);
- if (power_state_active_cnt <= 0) {
- pr_err("power state: unbalanced enable/disable calls\n");
- ret = -EINVAL;
- goto out;
- }
-
- power_state_active_cnt--;
-out:
- spin_unlock_irqrestore(&power_state_active_lock, flags);
- return ret;
-}
-
-/*
- * Exported interface for CPUIdle only. This function is called when interrupts
- * are turned off. Hence, no locking.
- */
-int power_state_active_is_enabled(void)
-{
- return (power_state_active_cnt > 0);
-}
-
-/**
- * struct db8500_regulator_info - db8500 regulator information
- * @dev: device pointer
- * @desc: regulator description
- * @rdev: regulator device pointer
- * @is_enabled: status of the regulator
- * @epod_id: id for EPOD (power domain)
- * @is_ramret: RAM retention switch for EPOD (power domain)
- * @operating_point: operating point (only for vape, to be removed)
- *
- */
-struct db8500_regulator_info {
- struct device *dev;
- struct regulator_desc desc;
- struct regulator_dev *rdev;
- bool is_enabled;
- u16 epod_id;
- bool is_ramret;
- bool exclude_from_power_state;
- unsigned int operating_point;
-};
+#include "dbx500-prcmu.h"
static int db8500_regulator_enable(struct regulator_dev *rdev)
{
- struct db8500_regulator_info *info = rdev_get_drvdata(rdev);
+ struct dbx500_regulator_info *info = rdev_get_drvdata(rdev);
if (info == NULL)
return -EINVAL;
@@ -93,16 +32,18 @@ static int db8500_regulator_enable(struct regulator_dev *rdev)
dev_vdbg(rdev_get_dev(rdev), "regulator-%s-enable\n",
info->desc.name);
- info->is_enabled = true;
- if (!info->exclude_from_power_state)
- power_state_active_enable();
+ if (!info->is_enabled) {
+ info->is_enabled = true;
+ if (!info->exclude_from_power_state)
+ power_state_active_enable();
+ }
return 0;
}
static int db8500_regulator_disable(struct regulator_dev *rdev)
{
- struct db8500_regulator_info *info = rdev_get_drvdata(rdev);
+ struct dbx500_regulator_info *info = rdev_get_drvdata(rdev);
int ret = 0;
if (info == NULL)
@@ -111,16 +52,18 @@ static int db8500_regulator_disable(struct regulator_dev *rdev)
dev_vdbg(rdev_get_dev(rdev), "regulator-%s-disable\n",
info->desc.name);
- info->is_enabled = false;
- if (!info->exclude_from_power_state)
- ret = power_state_active_disable();
+ if (info->is_enabled) {
+ info->is_enabled = false;
+ if (!info->exclude_from_power_state)
+ ret = power_state_active_disable();
+ }
return ret;
}
static int db8500_regulator_is_enabled(struct regulator_dev *rdev)
{
- struct db8500_regulator_info *info = rdev_get_drvdata(rdev);
+ struct dbx500_regulator_info *info = rdev_get_drvdata(rdev);
if (info == NULL)
return -EINVAL;
@@ -197,7 +140,7 @@ static int disable_epod(u16 epod_id, bool ramret)
*/
static int db8500_regulator_switch_enable(struct regulator_dev *rdev)
{
- struct db8500_regulator_info *info = rdev_get_drvdata(rdev);
+ struct dbx500_regulator_info *info = rdev_get_drvdata(rdev);
int ret;
if (info == NULL)
@@ -221,7 +164,7 @@ out:
static int db8500_regulator_switch_disable(struct regulator_dev *rdev)
{
- struct db8500_regulator_info *info = rdev_get_drvdata(rdev);
+ struct dbx500_regulator_info *info = rdev_get_drvdata(rdev);
int ret;
if (info == NULL)
@@ -245,7 +188,7 @@ out:
static int db8500_regulator_switch_is_enabled(struct regulator_dev *rdev)
{
- struct db8500_regulator_info *info = rdev_get_drvdata(rdev);
+ struct dbx500_regulator_info *info = rdev_get_drvdata(rdev);
if (info == NULL)
return -EINVAL;
@@ -266,8 +209,8 @@ static struct regulator_ops db8500_regulator_switch_ops = {
/*
* Regulator information
*/
-static struct db8500_regulator_info
-db8500_regulator_info[DB8500_NUM_REGULATORS] = {
+static struct dbx500_regulator_info
+dbx500_regulator_info[DB8500_NUM_REGULATORS] = {
[DB8500_REGULATOR_VAPE] = {
.desc = {
.name = "db8500-vape",
@@ -320,6 +263,8 @@ db8500_regulator_info[DB8500_NUM_REGULATORS] = {
.ops = &db8500_regulator_ops,
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
+ .fixed_uV = 1800000,
+ .n_voltages = 1,
},
.exclude_from_power_state = true,
},
@@ -469,57 +414,119 @@ db8500_regulator_info[DB8500_NUM_REGULATORS] = {
},
};
-static int __devinit db8500_regulator_probe(struct platform_device *pdev)
+static int db8500_regulator_register(struct platform_device *pdev,
+ struct regulator_init_data *init_data,
+ int id,
+ struct device_node *np)
+{
+ struct dbx500_regulator_info *info;
+ struct regulator_config config = { };
+ int err;
+
+ /* assign per-regulator data */
+ info = &dbx500_regulator_info[id];
+ info->dev = &pdev->dev;
+
+ config.dev = &pdev->dev;
+ config.init_data = init_data;
+ config.driver_data = info;
+ config.of_node = np;
+
+ /* register with the regulator framework */
+ info->rdev = devm_regulator_register(&pdev->dev, &info->desc, &config);
+ if (IS_ERR(info->rdev)) {
+ err = PTR_ERR(info->rdev);
+ dev_err(&pdev->dev, "failed to register %s: err %i\n",
+ info->desc.name, err);
+ return err;
+ }
+
+ dev_dbg(rdev_get_dev(info->rdev),
+ "regulator-%s-probed\n", info->desc.name);
+
+ return 0;
+}
+
+static struct of_regulator_match db8500_regulator_matches[] = {
+ { .name = "db8500_vape", .driver_data = (void *) DB8500_REGULATOR_VAPE, },
+ { .name = "db8500_varm", .driver_data = (void *) DB8500_REGULATOR_VARM, },
+ { .name = "db8500_vmodem", .driver_data = (void *) DB8500_REGULATOR_VMODEM, },
+ { .name = "db8500_vpll", .driver_data = (void *) DB8500_REGULATOR_VPLL, },
+ { .name = "db8500_vsmps1", .driver_data = (void *) DB8500_REGULATOR_VSMPS1, },
+ { .name = "db8500_vsmps2", .driver_data = (void *) DB8500_REGULATOR_VSMPS2, },
+ { .name = "db8500_vsmps3", .driver_data = (void *) DB8500_REGULATOR_VSMPS3, },
+ { .name = "db8500_vrf1", .driver_data = (void *) DB8500_REGULATOR_VRF1, },
+ { .name = "db8500_sva_mmdsp", .driver_data = (void *) DB8500_REGULATOR_SWITCH_SVAMMDSP, },
+ { .name = "db8500_sva_mmdsp_ret", .driver_data = (void *) DB8500_REGULATOR_SWITCH_SVAMMDSPRET, },
+ { .name = "db8500_sva_pipe", .driver_data = (void *) DB8500_REGULATOR_SWITCH_SVAPIPE, },
+ { .name = "db8500_sia_mmdsp", .driver_data = (void *) DB8500_REGULATOR_SWITCH_SIAMMDSP, },
+ { .name = "db8500_sia_mmdsp_ret", .driver_data = (void *) DB8500_REGULATOR_SWITCH_SIAMMDSPRET, },
+ { .name = "db8500_sia_pipe", .driver_data = (void *) DB8500_REGULATOR_SWITCH_SIAPIPE, },
+ { .name = "db8500_sga", .driver_data = (void *) DB8500_REGULATOR_SWITCH_SGA, },
+ { .name = "db8500_b2r2_mcde", .driver_data = (void *) DB8500_REGULATOR_SWITCH_B2R2_MCDE, },
+ { .name = "db8500_esram12", .driver_data = (void *) DB8500_REGULATOR_SWITCH_ESRAM12, },
+ { .name = "db8500_esram12_ret", .driver_data = (void *) DB8500_REGULATOR_SWITCH_ESRAM12RET, },
+ { .name = "db8500_esram34", .driver_data = (void *) DB8500_REGULATOR_SWITCH_ESRAM34, },
+ { .name = "db8500_esram34_ret", .driver_data = (void *) DB8500_REGULATOR_SWITCH_ESRAM34RET, },
+};
+
+static int
+db8500_regulator_of_probe(struct platform_device *pdev,
+ struct device_node *np)
+{
+ int i, err;
+
+ for (i = 0; i < ARRAY_SIZE(dbx500_regulator_info); i++) {
+ err = db8500_regulator_register(
+ pdev, db8500_regulator_matches[i].init_data,
+ i, db8500_regulator_matches[i].of_node);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+static int db8500_regulator_probe(struct platform_device *pdev)
{
struct regulator_init_data *db8500_init_data =
dev_get_platdata(&pdev->dev);
+ struct device_node *np = pdev->dev.of_node;
int i, err;
/* register all regulators */
- for (i = 0; i < ARRAY_SIZE(db8500_regulator_info); i++) {
- struct db8500_regulator_info *info;
- struct regulator_init_data *init_data = &db8500_init_data[i];
-
- /* assign per-regulator data */
- info = &db8500_regulator_info[i];
- info->dev = &pdev->dev;
-
- /* register with the regulator framework */
- info->rdev = regulator_register(&info->desc, &pdev->dev,
- init_data, info, NULL);
- if (IS_ERR(info->rdev)) {
- err = PTR_ERR(info->rdev);
- dev_err(&pdev->dev, "failed to register %s: err %i\n",
- info->desc.name, err);
-
- /* if failing, unregister all earlier regulators */
- while (--i >= 0) {
- info = &db8500_regulator_info[i];
- regulator_unregister(info->rdev);
- }
+ if (np) {
+ err = of_regulator_match(&pdev->dev, np,
+ db8500_regulator_matches,
+ ARRAY_SIZE(db8500_regulator_matches));
+ if (err < 0) {
+ dev_err(&pdev->dev,
+ "Error parsing regulator init data: %d\n", err);
return err;
}
- dev_dbg(rdev_get_dev(info->rdev),
- "regulator-%s-probed\n", info->desc.name);
+ err = db8500_regulator_of_probe(pdev, np);
+ if (err)
+ return err;
+ } else {
+ for (i = 0; i < ARRAY_SIZE(dbx500_regulator_info); i++) {
+ err = db8500_regulator_register(pdev,
+ &db8500_init_data[i],
+ i, NULL);
+ if (err)
+ return err;
+ }
}
+ err = ux500_regulator_debug_init(pdev,
+ dbx500_regulator_info,
+ ARRAY_SIZE(dbx500_regulator_info));
return 0;
}
-static int __exit db8500_regulator_remove(struct platform_device *pdev)
+static int db8500_regulator_remove(struct platform_device *pdev)
{
- int i;
-
- for (i = 0; i < ARRAY_SIZE(db8500_regulator_info); i++) {
- struct db8500_regulator_info *info;
- info = &db8500_regulator_info[i];
-
- dev_vdbg(rdev_get_dev(info->rdev),
- "regulator-%s-remove\n", info->desc.name);
-
- regulator_unregister(info->rdev);
- }
+ ux500_regulator_debug_exit();
return 0;
}
@@ -530,7 +537,7 @@ static struct platform_driver db8500_regulator_driver = {
.owner = THIS_MODULE,
},
.probe = db8500_regulator_probe,
- .remove = __exit_p(db8500_regulator_remove),
+ .remove = db8500_regulator_remove,
};
static int __init db8500_regulator_init(void)
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 23:07:40 +0000