mfd: palmas: Add SMPS10_BOOST feature

The SMPS10 regulator is not presesnt in all the variants
of the PALMAS PMIC family. Hence adding a feature to distingush
between them.

Signed-off-by: J Keerthy <j-keerthy@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

3 files changed, 38 insertions, 8 deletions

diff --git a/drivers/mfd/palmas.c b/drivers/mfd/palmas.c
index b24bee3d00b4..a4e53caa76cd 100644
--- a/drivers/mfd/palmas.c
+++ b/drivers/mfd/palmas.c
@@ -23,7 +23,7 @@
 #include <linux/err.h>
 #include <linux/mfd/core.h>
 #include <linux/mfd/palmas.h>
-#include <linux/of_platform.h>
+#include <linux/of_device.h>
 
 static const struct regmap_config palmas_regmap_config[PALMAS_NUM_CLIENTS] = {
         {
@@ -231,6 +231,16 @@ static void palmas_dt_to_pdata(struct i2c_client *i2c,
                 palmas_set_pdata_irq_flag(i2c, pdata);
 }
 
+static unsigned int palmas_features = PALMAS_PMIC_FEATURE_SMPS10_BOOST;
+
+static const struct of_device_id of_palmas_match_tbl[] = {
+        {
+                .compatible = "ti,palmas",
+                .data = &palmas_features,
+        },
+        { },
+};
+
 static int palmas_i2c_probe(struct i2c_client *i2c,
                             const struct i2c_device_id *id)
 {
@@ -238,8 +248,9 @@ static int palmas_i2c_probe(struct i2c_client *i2c,
         struct palmas_platform_data *pdata;
         struct device_node *node = i2c->dev.of_node;
         int ret = 0, i;
-        unsigned int reg, addr;
+        unsigned int reg, addr, *features;
         int slave;
+        const struct of_device_id *match;
 
         pdata = dev_get_platdata(&i2c->dev);
 
@@ -261,9 +272,16 @@ static int palmas_i2c_probe(struct i2c_client *i2c,
 
         i2c_set_clientdata(i2c, palmas);
         palmas->dev = &i2c->dev;
-        palmas->id = id->driver_data;
         palmas->irq = i2c->irq;
 
+        match = of_match_device(of_match_ptr(of_palmas_match_tbl), &i2c->dev);
+
+        if (!match)
+                return -ENODATA;
+
+        features = (unsigned int *)match->data;
+        palmas->features = *features;
+
         for (i = 0; i < PALMAS_NUM_CLIENTS; i++) {
                 if (i == 0)
                         palmas->i2c_clients[i] = i2c;
@@ -433,11 +451,6 @@ static const struct i2c_device_id palmas_i2c_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, palmas_i2c_id);
 
-static struct of_device_id of_palmas_match_tbl[] = {
-        { .compatible = "ti,palmas", },
-        { /* end */ }
-};
-
 static struct i2c_driver palmas_i2c_driver = {
         .driver = {
                    .name = "palmas",
diff --git a/drivers/regulator/palmas-regulator.c b/drivers/regulator/palmas-regulator.c
index 3ae44ac12a94..1ae1e83448cf 100644
--- a/drivers/regulator/palmas-regulator.c
+++ b/drivers/regulator/palmas-regulator.c
@@ -838,6 +838,9 @@ static int palmas_regulators_probe(struct platform_device *pdev)
                                 continue;
                         ramp_delay_support = true;
                         break;
+                case PALMAS_REG_SMPS10:
+                        if (!PALMAS_PMIC_HAS(palmas, SMPS10_BOOST))
+                                continue;
                 }
 
                 if ((id == PALMAS_REG_SMPS6) || (id == PALMAS_REG_SMPS8))
diff --git a/include/linux/mfd/palmas.h b/include/linux/mfd/palmas.h
index 8f21daf62fb5..98058caa7aca 100644
--- a/include/linux/mfd/palmas.h
+++ b/include/linux/mfd/palmas.h
@@ -32,6 +32,19 @@
                         ((a) == PALMAS_CHIP_ID))
 #define is_palmas_charger(a) ((a) == PALMAS_CHIP_CHARGER_ID)
 
+/**
+ * Palmas PMIC feature types
+ *
+ * PALMAS_PMIC_FEATURE_SMPS10_BOOST - used when the PMIC provides SMPS10_BOOST
+ *      regulator.
+ *
+ * PALMAS_PMIC_HAS(b, f) - macro to check if a bandgap device is capable of a
+ *      specific feature (above) or not. Return non-zero, if yes.
+ */
+#define PALMAS_PMIC_FEATURE_SMPS10_BOOST        BIT(0)
+#define PALMAS_PMIC_HAS(b, f)                   \
+                        ((b)->features & PALMAS_PMIC_FEATURE_ ## f)
+
 struct palmas_pmic;
 struct palmas_gpadc;
 struct palmas_resource;
@@ -46,6 +59,7 @@ struct palmas {
         /* Stored chip id */
         int id;
 
+        unsigned int features;
         /* IRQ Data */
         int irq;
         u32 irq_mask;