staging: regulator: hi6421v600-regulator: better handle modes

Instead of implementing a custom set of properties, set
valid_modes_mask based on having or not a mask for enabling
the eco_mode.

This makes the code clearer, and remove some uneeded props
from DT.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/0f4ac5a4167bbca428c8507b6992acd8b3ebabd1.1597647359.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/hikey9xx/hi6421v600-regulator.c b/drivers/staging/hikey9xx/hi6421v600-regulator.c
index e4a6489..bde7fa4 100644 (file)
--- a/drivers/staging/hikey9xx/hi6421v600-regulator.c
+++ b/drivers/staging/hikey9xx/hi6421v600-regulator.c
@@ -338,7 +338,6 @@ static int hisi_regulator_probe_ldo(struct platform_device *pdev,
        struct regulator_config config = { };
        struct regulation_constraints *constraint;
        const char *supplyname = NULL;
-       unsigned int temp_modes;
        int ret = 0;
 
        initdata = of_get_regulator_init_data(dev, np, NULL);
@@ -347,25 +346,6 @@ static int hisi_regulator_probe_ldo(struct platform_device *pdev,
                return -EINVAL;
        }
 
-       /* hisi regulator supports two modes */
-       constraint = &initdata->constraints;
-
-       ret = of_property_read_u32_array(np, "valid-modes-mask",
-                                        &constraint->valid_modes_mask, 1);
-       if (ret) {
-               dev_err(dev, "no valid modes mask\n");
-               ret = -ENODEV;
-               return ret;
-       }
-       ret = of_property_read_u32_array(np, "valid-idle-mask",
-                                        &temp_modes, 1);
-       if (ret) {
-               dev_err(dev, "no valid idle mask\n");
-               ret = -ENODEV;
-               return ret;
-       }
-       constraint->valid_ops_mask |= temp_modes;
-
        sreg = kzalloc(sizeof(*sreg), GFP_KERNEL);
        if (!sreg)
                return -ENOMEM;
@@ -387,6 +367,15 @@ static int hisi_regulator_probe_ldo(struct platform_device *pdev,
        if (ret)
                goto hisi_probe_end;
 
+       /* hisi regulator supports two modes */
+       constraint = &initdata->constraints;
+
+       constraint->valid_modes_mask = REGULATOR_MODE_NORMAL;
+       if (sreg->eco_mode_mask) {
+               constraint->valid_modes_mask |= REGULATOR_MODE_IDLE;
+               constraint->valid_ops_mask |= REGULATOR_CHANGE_MODE;
+       }
+
        config.dev = &pdev->dev;
        config.init_data = initdata;
        config.driver_data = sreg;
@@ -401,8 +390,7 @@ static int hisi_regulator_probe_ldo(struct platform_device *pdev,
                goto hisi_probe_end;
        }
 
-       dev_dbg(dev, "%s:valid_modes_mask: 0x%x, valid_ops_mask: 0x%x\n",
-                rdesc->name,
+       dev_dbg(dev, "valid_modes_mask: 0x%x, valid_ops_mask: 0x%x\n",
                 constraint->valid_modes_mask, constraint->valid_ops_mask);
 
        dev_set_drvdata(dev, rdev);