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-rw-r--r--drivers/mfd/ab3100-core.c1
-rw-r--r--drivers/regulator/ab3100.c123
2 files changed, 118 insertions, 6 deletions
diff --git a/drivers/mfd/ab3100-core.c b/drivers/mfd/ab3100-core.c
index 2ec7725f4a08..a9bb140bc86b 100644
--- a/drivers/mfd/ab3100-core.c
+++ b/drivers/mfd/ab3100-core.c
@@ -753,6 +753,7 @@ static struct mfd_cell ab3100_devs[] = {
},
{
.name = "ab3100-regulators",
+ .of_compatible = "stericsson,ab3100-regulators",
.id = -1,
},
{
diff --git a/drivers/regulator/ab3100.c b/drivers/regulator/ab3100.c
index 740735d1cca0..be1e6ad64830 100644
--- a/drivers/regulator/ab3100.c
+++ b/drivers/regulator/ab3100.c
@@ -17,6 +17,8 @@
#include <linux/regulator/driver.h>
#include <linux/mfd/ab3100.h>
#include <linux/mfd/abx500.h>
+#include <linux/of.h>
+#include <linux/regulator/of_regulator.h>
/* LDO registers and some handy masking definitions for AB3100 */
#define AB3100_LDO_A 0x40
@@ -345,7 +347,11 @@ static int ab3100_get_voltage_regulator_external(struct regulator_dev *reg)
{
struct ab3100_regulator *abreg = rdev_get_drvdata(reg);
- return abreg->plfdata->external_voltage;
+ if (abreg->plfdata)
+ return abreg->plfdata->external_voltage;
+ else
+ /* TODO: encode external voltage into device tree */
+ return 0;
}
static struct regulator_ops regulator_ops_fixed = {
@@ -490,6 +496,8 @@ ab3100_regulator_desc[AB3100_NUM_REGULATORS] = {
static int ab3100_regulator_register(struct platform_device *pdev,
struct ab3100_platform_data *plfdata,
+ struct regulator_init_data *init_data,
+ struct device_node *np,
int id)
{
struct regulator_desc *desc;
@@ -518,9 +526,11 @@ static int ab3100_regulator_register(struct platform_device *pdev,
*/
reg->dev = &pdev->dev;
if (plfdata) {
- /* This will be replaced by device tree data */
reg->plfdata = plfdata;
config.init_data = &plfdata->reg_constraints[i];
+ } else if (np) {
+ config.of_node = np;
+ config.init_data = init_data;
}
config.dev = &pdev->dev;
config.driver_data = reg;
@@ -540,15 +550,103 @@ static int ab3100_regulator_register(struct platform_device *pdev,
return 0;
}
+static struct of_regulator_match ab3100_regulator_matches[] = {
+ { .name = "ab3100_ldo_a", .driver_data = (void *) AB3100_LDO_A, },
+ { .name = "ab3100_ldo_c", .driver_data = (void *) AB3100_LDO_C, },
+ { .name = "ab3100_ldo_d", .driver_data = (void *) AB3100_LDO_D, },
+ { .name = "ab3100_ldo_e", .driver_data = (void *) AB3100_LDO_E, },
+ { .name = "ab3100_ldo_f", .driver_data = (void *) AB3100_LDO_F },
+ { .name = "ab3100_ldo_g", .driver_data = (void *) AB3100_LDO_G },
+ { .name = "ab3100_ldo_h", .driver_data = (void *) AB3100_LDO_H },
+ { .name = "ab3100_ldo_k", .driver_data = (void *) AB3100_LDO_K },
+ { .name = "ab3100_ext", .driver_data = (void *) AB3100_LDO_EXT },
+ { .name = "ab3100_buck", .driver_data = (void *) AB3100_BUCK },
+};
+
/*
- * NOTE: the following functions are regulators pluralis - it is the
- * binding to the AB3100 core driver and the parent platform device
- * for all the different regulators.
+ * Initial settings of ab3100 registers.
+ * Common for below LDO regulator settings are that
+ * bit 7-5 controls voltage. Bit 4 turns regulator ON(1) or OFF(0).
+ * Bit 3-2 controls sleep enable and bit 1-0 controls sleep mode.
*/
+/* LDO_A 0x16: 2.75V, ON, SLEEP_A, SLEEP OFF GND */
+#define LDO_A_SETTING 0x16
+/* LDO_C 0x10: 2.65V, ON, SLEEP_A or B, SLEEP full power */
+#define LDO_C_SETTING 0x10
+/* LDO_D 0x10: 2.65V, ON, sleep mode not used */
+#define LDO_D_SETTING 0x10
+/* LDO_E 0x10: 1.8V, ON, SLEEP_A or B, SLEEP full power */
+#define LDO_E_SETTING 0x10
+/* LDO_E SLEEP 0x00: 1.8V, not used, SLEEP_A or B, not used */
+#define LDO_E_SLEEP_SETTING 0x00
+/* LDO_F 0xD0: 2.5V, ON, SLEEP_A or B, SLEEP full power */
+#define LDO_F_SETTING 0xD0
+/* LDO_G 0x00: 2.85V, OFF, SLEEP_A or B, SLEEP full power */
+#define LDO_G_SETTING 0x00
+/* LDO_H 0x18: 2.75V, ON, SLEEP_B, SLEEP full power */
+#define LDO_H_SETTING 0x18
+/* LDO_K 0x00: 2.75V, OFF, SLEEP_A or B, SLEEP full power */
+#define LDO_K_SETTING 0x00
+/* LDO_EXT 0x00: Voltage not set, OFF, not used, not used */
+#define LDO_EXT_SETTING 0x00
+/* BUCK 0x7D: 1.2V, ON, SLEEP_A and B, SLEEP low power */
+#define BUCK_SETTING 0x7D
+/* BUCK SLEEP 0xAC: 1.05V, Not used, SLEEP_A and B, Not used */
+#define BUCK_SLEEP_SETTING 0xAC
+
+static const u8 ab3100_reg_initvals[] = {
+ LDO_A_SETTING,
+ LDO_C_SETTING,
+ LDO_E_SETTING,
+ LDO_E_SLEEP_SETTING,
+ LDO_F_SETTING,
+ LDO_G_SETTING,
+ LDO_H_SETTING,
+ LDO_K_SETTING,
+ LDO_EXT_SETTING,
+ BUCK_SETTING,
+ BUCK_SLEEP_SETTING,
+ LDO_D_SETTING,
+};
+
+static int
+ab3100_regulator_of_probe(struct platform_device *pdev, struct device_node *np)
+{
+ int err, i;
+
+ /*
+ * Set up the regulator registers, as was previously done with
+ * platform data.
+ */
+ /* Set up regulators */
+ for (i = 0; i < ARRAY_SIZE(ab3100_reg_init_order); i++) {
+ err = abx500_set_register_interruptible(&pdev->dev, 0,
+ ab3100_reg_init_order[i],
+ ab3100_reg_initvals[i]);
+ if (err) {
+ dev_err(&pdev->dev, "regulator initialization failed with error %d\n",
+ err);
+ return err;
+ }
+ }
+
+ for (i = 0; i < ARRAY_SIZE(ab3100_regulator_matches); i++) {
+ err = ab3100_regulator_register(
+ pdev, NULL, ab3100_regulator_matches[i].init_data,
+ ab3100_regulator_matches[i].of_node,
+ (int) ab3100_regulator_matches[i].driver_data);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
static int ab3100_regulators_probe(struct platform_device *pdev)
{
struct ab3100_platform_data *plfdata = pdev->dev.platform_data;
+ struct device_node *np = pdev->dev.of_node;
int err = 0;
u8 data;
int i;
@@ -567,6 +665,18 @@ static int ab3100_regulators_probe(struct platform_device *pdev)
dev_notice(&pdev->dev,
"chip is in inactive mode (Cold start)\n");
+ if (np) {
+ err = of_regulator_match(&pdev->dev, np,
+ ab3100_regulator_matches,
+ ARRAY_SIZE(ab3100_regulator_matches));
+ if (err < 0) {
+ dev_err(&pdev->dev,
+ "Error parsing regulator init data: %d\n", err);
+ return err;
+ }
+ return ab3100_regulator_of_probe(pdev, np);
+ }
+
/* Set up regulators */
for (i = 0; i < ARRAY_SIZE(ab3100_reg_init_order); i++) {
err = abx500_set_register_interruptible(&pdev->dev, 0,
@@ -583,7 +693,8 @@ static int ab3100_regulators_probe(struct platform_device *pdev)
for (i = 0; i < AB3100_NUM_REGULATORS; i++) {
struct regulator_desc *desc = &ab3100_regulator_desc[i];
- err = ab3100_regulator_register(pdev, plfdata, desc->id);
+ err = ab3100_regulator_register(pdev, plfdata, NULL, NULL,
+ desc->id);
if (err)
return err;
}