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-rw-r--r--drivers/regulator/ab8500-ext.c98
-rw-r--r--include/linux/regulator/ab8500.h4
2 files changed, 75 insertions, 27 deletions
diff --git a/drivers/regulator/ab8500-ext.c b/drivers/regulator/ab8500-ext.c
index 95008dec5190..21b9bfb0fc5e 100644
--- a/drivers/regulator/ab8500-ext.c
+++ b/drivers/regulator/ab8500-ext.c
@@ -28,80 +28,121 @@
* @dev: device pointer
* @desc: regulator description
* @rdev: regulator device
+ * @cfg: regulator configuration (extension of regulator FW configuration)
* @is_enabled: status of regulator (on/off)
* @update_bank: bank to control on/off
* @update_reg: register to control on/off
* @update_mask: mask to enable/disable and set mode of regulator
* @update_val: bits holding the regulator current mode
- * @update_val_en: bits to set EN pin active (LPn pin deactive)
+ * @update_val_hp: bits to set EN pin active (LPn pin deactive)
* normally this means high power mode
- * @update_val_en_lp: bits to set EN pin active and LPn pin active
- * normally this means low power mode
- * @delay: startup delay in ms
+ * @update_val_lp: bits to set EN pin active and LPn pin active
+ * normally this means low power mode
+ * @update_val_hw: bits to set regulator pins in HW control
+ * SysClkReq pins and logic will choose mode
*/
struct ab8500_ext_regulator_info {
struct device *dev;
struct regulator_desc desc;
struct regulator_dev *rdev;
+ struct ab8500_ext_regulator_cfg *cfg;
bool is_enabled;
u8 update_bank;
u8 update_reg;
u8 update_mask;
u8 update_val;
- u8 update_val_en;
- u8 update_val_en_lp;
+ u8 update_val_hp;
+ u8 update_val_lp;
+ u8 update_val_hw;
};
-static int ab8500_ext_regulator_enable(struct regulator_dev *rdev)
+static int enable(struct ab8500_ext_regulator_info *info, u8 *regval)
{
int ret;
- struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev);
- if (info == NULL) {
- dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
- return -EINVAL;
- }
+ *regval = info->update_val;
+
+ /*
+ * To satisfy both HW high power request and SW request, the regulator
+ * must be on in high power.
+ */
+ if (info->cfg && info->cfg->hwreq)
+ *regval = info->update_val_hp;
ret = abx500_mask_and_set_register_interruptible(info->dev,
info->update_bank, info->update_reg,
- info->update_mask, info->update_val);
+ info->update_mask, *regval);
if (ret < 0)
dev_err(rdev_get_dev(info->rdev),
"couldn't set enable bits for regulator\n");
info->is_enabled = true;
- dev_dbg(rdev_get_dev(rdev), "%s-enable (bank, reg, mask, value):"
- " 0x%02x, 0x%02x, 0x%02x, 0x%02x\n",
- info->desc.name, info->update_bank, info->update_reg,
- info->update_mask, info->update_val);
-
return ret;
}
-static int ab8500_ext_regulator_disable(struct regulator_dev *rdev)
+static int ab8500_ext_regulator_enable(struct regulator_dev *rdev)
{
int ret;
struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev);
+ u8 regval;
if (info == NULL) {
dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
return -EINVAL;
}
+ ret = enable(info, &regval);
+
+ dev_dbg(rdev_get_dev(rdev), "%s-enable (bank, reg, mask, value):"
+ " 0x%02x, 0x%02x, 0x%02x, 0x%02x\n",
+ info->desc.name, info->update_bank, info->update_reg,
+ info->update_mask, regval);
+
+ return ret;
+}
+
+static int disable(struct ab8500_ext_regulator_info *info, u8 *regval)
+{
+ int ret;
+
+ *regval = 0x0;
+
+ /*
+ * Set the regulator in HW request mode if configured
+ */
+ if (info->cfg && info->cfg->hwreq)
+ *regval = info->update_val_hw;
+
ret = abx500_mask_and_set_register_interruptible(info->dev,
info->update_bank, info->update_reg,
- info->update_mask, 0x0);
+ info->update_mask, *regval);
if (ret < 0)
dev_err(rdev_get_dev(info->rdev),
"couldn't set disable bits for regulator\n");
info->is_enabled = false;
+ return ret;
+}
+
+static int ab8500_ext_regulator_disable(struct regulator_dev *rdev)
+{
+ int ret;
+ struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev);
+ u8 regval;
+
+ if (info == NULL) {
+ dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
+ return -EINVAL;
+ }
+
+ ret = disable(info, &regval);
+
dev_dbg(rdev_get_dev(rdev), "%s-disable (bank, reg, mask, value):"
" 0x%02x, 0x%02x, 0x%02x, 0x%02x\n",
info->desc.name, info->update_bank, info->update_reg,
- info->update_mask, 0x0);
+ info->update_mask, regval);
return ret;
}
@@ -130,7 +171,8 @@ static int ab8500_ext_regulator_is_enabled(struct regulator_dev *rdev)
info->desc.name, info->update_bank, info->update_reg,
info->update_mask, regval);
- if (regval & info->update_mask)
+ if (((regval & info->update_mask) == info->update_val_lp) ||
+ ((regval & info->update_mask) == info->update_val_hp))
info->is_enabled = true;
else
info->is_enabled = false;
@@ -241,7 +283,6 @@ static struct regulator_ops ab8500_ext_regulator_ops = {
.list_voltage = ab8500_ext_list_voltage,
};
-
static struct ab8500_ext_regulator_info
ab8500_ext_regulator_info[AB8500_NUM_EXT_REGULATORS] = {
[AB8500_EXT_SUPPLY1] = {
@@ -291,8 +332,9 @@ static struct ab8500_ext_regulator_info
.update_reg = 0x08,
.update_mask = 0x30,
.update_val = 0x10,
- .update_val_en = 0x10,
- .update_val_en_lp = 0x30,
+ .update_val_hp = 0x10,
+ .update_val_lp = 0x30,
+ .update_val_hw = 0x20,
},
};
@@ -333,8 +375,8 @@ int ab8500_ext_regulator_init(struct platform_device *pdev)
/* VextSupply3LPn is inverted on AB8500 2.x */
info = &ab8500_ext_regulator_info[AB8500_EXT_SUPPLY3];
info->update_val = 0x30;
- info->update_val_en = 0x30;
- info->update_val_en_lp = 0x10;
+ info->update_val_hp = 0x30;
+ info->update_val_lp = 0x10;
}
/* register all regulators */
@@ -344,6 +386,8 @@ int ab8500_ext_regulator_init(struct platform_device *pdev)
/* assign per-regulator data */
info = &ab8500_ext_regulator_info[i];
info->dev = &pdev->dev;
+ info->cfg = (struct ab8500_ext_regulator_cfg *)
+ pdata->ext_regulator[i].driver_data;
config.dev = &pdev->dev;
config.init_data = &pdata->ext_regulator[i];
diff --git a/include/linux/regulator/ab8500.h b/include/linux/regulator/ab8500.h
index 4e92e5b879a5..cf496e93c0cf 100644
--- a/include/linux/regulator/ab8500.h
+++ b/include/linux/regulator/ab8500.h
@@ -143,6 +143,10 @@ enum ab9540_regulator_reg {
};
/* AB8500 external regulators */
+struct ab8500_ext_regulator_cfg {
+ bool hwreq; /* requires hw mode or high power mode */
+};
+
enum ab8500_ext_regulator_id {
AB8500_EXT_SUPPLY1,
AB8500_EXT_SUPPLY2,
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-16 12:46:08 +0000