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Date: Tue, 28 Aug 2012 13:47:40 +0200
From: Graeme Gregory <gg@...mlogic.co.uk>
To: linux-kernel@...r.kernel.org
Cc: broonie@...nsource.wolfsonmicro.com, lrg@...com,
sameo@...ux.intel.com, peter.ujfalusi@...com, s-guiriec@...com,
Graeme Gregory <gg@...mlogic.co.uk>,
Kishon Vijay Abraham I <kishon@...com>
Subject: [PATCH 6/6] regulator: palmas add DT support
Add DT support to palmas regulator. This involved a little change to
the platform data structure. Regulator information can now come from
platform data or DT.
Signed-off-by: Graeme Gregory <gg@...mlogic.co.uk>
Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
---
drivers/regulator/palmas-regulator.c | 130 +++++++++++++++++++++++++++++++---
1 file changed, 119 insertions(+), 11 deletions(-)
diff --git a/drivers/regulator/palmas-regulator.c b/drivers/regulator/palmas-regulator.c
index 2ba7502..48c318b 100644
--- a/drivers/regulator/palmas-regulator.c
+++ b/drivers/regulator/palmas-regulator.c
@@ -22,6 +22,8 @@
#include <linux/slab.h>
#include <linux/regmap.h>
#include <linux/mfd/palmas.h>
+#include <linux/of_platform.h>
+#include <linux/regulator/of_regulator.h>
struct regs_info {
char *name;
@@ -568,10 +570,103 @@ static int palmas_ldo_init(struct palmas *palmas, int id,
return 0;
}
+static struct of_regulator_match palmas_matches[] = {
+ { .name = "smps12", },
+ { .name = "smps123", },
+ { .name = "smps3", },
+ { .name = "smps45", },
+ { .name = "smps457", },
+ { .name = "smps6", },
+ { .name = "smps7", },
+ { .name = "smps8", },
+ { .name = "smps9", },
+ { .name = "smps10", },
+ { .name = "ldo1", },
+ { .name = "ldo2", },
+ { .name = "ldo3", },
+ { .name = "ldo4", },
+ { .name = "ldo5", },
+ { .name = "ldo6", },
+ { .name = "ldo7", },
+ { .name = "ldo8", },
+ { .name = "ldo9", },
+ { .name = "ldoln", },
+ { .name = "ldousb", },
+};
+
+static void __devinit palmas_dt_to_pdata(struct device *dev,
+ struct device_node *node,
+ struct palmas_pmic_platform_data *pdata)
+{
+ struct device_node *regulators;
+ u32 prop;
+ int idx, ret;
+
+ regulators = of_find_node_by_name(node, "regulators");
+ if (!regulators) {
+ dev_info(dev, "regulator node not found\n");
+ return;
+ }
+
+ ret = of_regulator_match(dev, regulators, palmas_matches,
+ PALMAS_NUM_REGS);
+ if (ret < 0) {
+ dev_err(dev, "Error parsing regulator init data: %d\n", ret);
+ return;
+ }
+
+ for (idx = 0; idx < PALMAS_NUM_REGS; idx++) {
+ if (!palmas_matches[idx].init_data ||
+ !palmas_matches[idx].of_node)
+ continue;
+
+ pdata->reg_data[idx] = palmas_matches[idx].init_data;
+
+ pdata->reg_init[idx] = devm_kzalloc(dev,
+ sizeof(struct palmas_reg_init), GFP_KERNEL);
+
+ ret = of_property_read_u32(palmas_matches[idx].of_node,
+ "ti,warm_reset", &prop);
+ if (!ret)
+ pdata->reg_init[idx]->warm_reset = prop;
+
+ ret = of_property_read_u32(palmas_matches[idx].of_node,
+ "ti,roof_floor", &prop);
+ if (!ret)
+ pdata->reg_init[idx]->roof_floor = prop;
+
+ ret = of_property_read_u32(palmas_matches[idx].of_node,
+ "ti,mode_sleep", &prop);
+ if (!ret)
+ pdata->reg_init[idx]->mode_sleep = prop;
+
+ ret = of_property_read_u32(palmas_matches[idx].of_node,
+ "ti,warm_reset", &prop);
+ if (!ret)
+ pdata->reg_init[idx]->warm_reset = prop;
+
+ ret = of_property_read_u32(palmas_matches[idx].of_node,
+ "ti,tstep", &prop);
+ if (!ret)
+ pdata->reg_init[idx]->tstep = prop;
+
+ ret = of_property_read_u32(palmas_matches[idx].of_node,
+ "ti,vsel", &prop);
+ if (!ret)
+ pdata->reg_init[idx]->vsel = prop;
+ }
+
+ ret = of_property_read_u32(node, "ti,ldo6_vibrator", &prop);
+ if (!ret)
+ pdata->ldo6_vibrator = prop;
+}
+
+
static __devinit int palmas_probe(struct platform_device *pdev)
{
struct palmas *palmas = dev_get_drvdata(pdev->dev.parent);
struct palmas_pmic_platform_data *pdata = pdev->dev.platform_data;
+ struct device_node *node = pdev->dev.of_node;
struct regulator_dev *rdev;
struct regulator_config config = { };
struct palmas_pmic *pmic;
@@ -579,10 +674,14 @@ static __devinit int palmas_probe(struct platform_device *pdev)
int id = 0, ret;
unsigned int addr, reg;
- if (!pdata)
- return -EINVAL;
- if (!pdata->reg_data)
- return -EINVAL;
+ if (node && !pdata) {
+ pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
+
+ if (!pdata)
+ return -ENOMEM;
+
+ palmas_dt_to_pdata(&pdev->dev, node, pdata);
+ }
pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
if (!pmic)
@@ -661,7 +760,7 @@ static __devinit int palmas_probe(struct platform_device *pdev)
pmic->desc[id].owner = THIS_MODULE;
/* Initialise sleep/init values from platform data */
- if (pdata && pdata->reg_init) {
+ if (pdata) {
reg_init = pdata->reg_init[id];
if (reg_init) {
ret = palmas_smps_init(palmas, id, reg_init);
@@ -685,11 +784,13 @@ static __devinit int palmas_probe(struct platform_device *pdev)
pmic->range[id] = 1;
}
- if (pdata && pdata->reg_data)
+ if (pdata)
config.init_data = pdata->reg_data[id];
else
config.init_data = NULL;
+ config.of_node = palmas_matches[id].of_node;
+
rdev = regulator_register(&pmic->desc[id], &config);
if (IS_ERR(rdev)) {
dev_err(&pdev->dev,
@@ -726,11 +827,13 @@ static __devinit int palmas_probe(struct platform_device *pdev)
palmas_regs_info[id].ctrl_addr);
pmic->desc[id].enable_mask = PALMAS_LDO1_CTRL_MODE_ACTIVE;
- if (pdata && pdata->reg_data)
+ if (pdata)
config.init_data = pdata->reg_data[id];
else
config.init_data = NULL;
+ config.of_node = palmas_matches[id].of_node;
+
rdev = regulator_register(&pmic->desc[id], &config);
if (IS_ERR(rdev)) {
dev_err(&pdev->dev,
@@ -744,14 +847,12 @@ static __devinit int palmas_probe(struct platform_device *pdev)
pmic->rdev[id] = rdev;
/* Initialise sleep/init values from platform data */
- if (pdata->reg_init) {
+ if (pdata) {
reg_init = pdata->reg_init[id];
if (reg_init) {
ret = palmas_ldo_init(palmas, id, reg_init);
- if (ret) {
- regulator_unregister(pmic->rdev[id]);
+ if (ret)
goto err_unregister_regulator;
- }
}
}
}
@@ -774,9 +875,15 @@ static int __devexit palmas_remove(struct platform_device *pdev)
return 0;
}
+static struct of_device_id __devinitdata of_palmas_match_tbl[] = {
+ { .compatible = "ti,palmas-pmic", },
+ { /* end */ }
+};
+
static struct platform_driver palmas_driver = {
.driver = {
.name = "palmas-pmic",
+ .of_match_table = of_palmas_match_tbl,
.owner = THIS_MODULE,
},
.probe = palmas_probe,
@@ -799,3 +906,4 @@ MODULE_AUTHOR("Graeme Gregory <gg@...mlogic.co.uk>");
MODULE_DESCRIPTION("Palmas voltage regulator driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:palmas-pmic");
+MODULE_DEVICE_TABLE(of, of_palmas_match_tbl);
--
1.7.9.5
--
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