From 8a34e979f684aa13e6c4bf23b394cca9dfabf4a9 Mon Sep 17 00:00:00 2001 From: WEN Pingbo Date: Sat, 23 Apr 2016 15:11:05 +0800 Subject: [PATCH] regulator: refactor valid_ops_mask checking code To make the code more compat and centralized, this patch add a unified function - regulator_ops_is_valid. So we can add some extra checking code easily later. Signed-off-by: WEN Pingbo Signed-off-by: Mark Brown --- drivers/regulator/core.c | 88 +++++++++++++--------------------------- 1 file changed, 29 insertions(+), 59 deletions(-) diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 18dd7ee61455..bca9167d8c43 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -132,6 +132,19 @@ static bool have_full_constraints(void) return has_full_constraints || of_have_populated_dt(); } +static bool regulator_ops_is_valid(struct regulator_dev *rdev, int ops) +{ + if (!rdev->constraints) { + rdev_err(rdev, "no constraints\n"); + return false; + } + + if (rdev->constraints->valid_ops_mask & ops) + return true; + + return false; +} + static inline struct regulator_dev *rdev_get_supply(struct regulator_dev *rdev) { if (rdev && rdev->supply) @@ -198,28 +211,13 @@ static struct device_node *of_get_regulator(struct device *dev, const char *supp return regnode; } -static int _regulator_can_change_status(struct regulator_dev *rdev) -{ - if (!rdev->constraints) - return 0; - - if (rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_STATUS) - return 1; - else - return 0; -} - /* Platform voltage constraint check */ static int regulator_check_voltage(struct regulator_dev *rdev, int *min_uV, int *max_uV) { BUG_ON(*min_uV > *max_uV); - if (!rdev->constraints) { - rdev_err(rdev, "no constraints\n"); - return -ENODEV; - } - if (!(rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_VOLTAGE)) { + if (!regulator_ops_is_valid(rdev, REGULATOR_CHANGE_VOLTAGE)) { rdev_err(rdev, "voltage operation not allowed\n"); return -EPERM; } @@ -275,11 +273,7 @@ static int regulator_check_current_limit(struct regulator_dev *rdev, { BUG_ON(*min_uA > *max_uA); - if (!rdev->constraints) { - rdev_err(rdev, "no constraints\n"); - return -ENODEV; - } - if (!(rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_CURRENT)) { + if (!regulator_ops_is_valid(rdev, REGULATOR_CHANGE_CURRENT)) { rdev_err(rdev, "current operation not allowed\n"); return -EPERM; } @@ -312,11 +306,7 @@ static int regulator_mode_constrain(struct regulator_dev *rdev, int *mode) return -EINVAL; } - if (!rdev->constraints) { - rdev_err(rdev, "no constraints\n"); - return -ENODEV; - } - if (!(rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_MODE)) { + if (!regulator_ops_is_valid(rdev, REGULATOR_CHANGE_MODE)) { rdev_err(rdev, "mode operation not allowed\n"); return -EPERM; } @@ -333,20 +323,6 @@ static int regulator_mode_constrain(struct regulator_dev *rdev, int *mode) return -EINVAL; } -/* dynamic regulator mode switching constraint check */ -static int regulator_check_drms(struct regulator_dev *rdev) -{ - if (!rdev->constraints) { - rdev_err(rdev, "no constraints\n"); - return -ENODEV; - } - if (!(rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_DRMS)) { - rdev_dbg(rdev, "drms operation not allowed\n"); - return -EPERM; - } - return 0; -} - static ssize_t regulator_uV_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -692,8 +668,7 @@ static int drms_uA_update(struct regulator_dev *rdev) * first check to see if we can set modes at all, otherwise just * tell the consumer everything is OK. */ - err = regulator_check_drms(rdev); - if (err < 0) + if (!regulator_ops_is_valid(rdev, REGULATOR_CHANGE_DRMS)) return 0; if (!rdev->desc->ops->get_optimum_mode && @@ -893,7 +868,7 @@ static void print_constraints(struct regulator_dev *rdev) rdev_dbg(rdev, "%s\n", buf); if ((constraints->min_uV != constraints->max_uV) && - !(constraints->valid_ops_mask & REGULATOR_CHANGE_VOLTAGE)) + !regulator_ops_is_valid(rdev, REGULATOR_CHANGE_VOLTAGE)) rdev_warn(rdev, "Voltage range but no REGULATOR_CHANGE_VOLTAGE\n"); } @@ -1354,7 +1329,7 @@ static struct regulator *create_regulator(struct regulator_dev *rdev, * it is then we don't need to do nearly so much work for * enable/disable calls. */ - if (!_regulator_can_change_status(rdev) && + if (!regulator_ops_is_valid(rdev, REGULATOR_CHANGE_STATUS) && _regulator_is_enabled(rdev)) regulator->always_on = true; @@ -2131,15 +2106,15 @@ static int _regulator_enable(struct regulator_dev *rdev) lockdep_assert_held_once(&rdev->mutex); /* check voltage and requested load before enabling */ - if (rdev->constraints && - (rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_DRMS)) + if (regulator_ops_is_valid(rdev, REGULATOR_CHANGE_DRMS)) drms_uA_update(rdev); if (rdev->use_count == 0) { /* The regulator may on if it's not switchable or left on */ ret = _regulator_is_enabled(rdev); if (ret == -EINVAL || ret == 0) { - if (!_regulator_can_change_status(rdev)) + if (!regulator_ops_is_valid(rdev, + REGULATOR_CHANGE_STATUS)) return -EPERM; ret = _regulator_do_enable(rdev); @@ -2241,7 +2216,7 @@ static int _regulator_disable(struct regulator_dev *rdev) (rdev->constraints && !rdev->constraints->always_on)) { /* we are last user */ - if (_regulator_can_change_status(rdev)) { + if (regulator_ops_is_valid(rdev, REGULATOR_CHANGE_STATUS)) { ret = _notifier_call_chain(rdev, REGULATOR_EVENT_PRE_DISABLE, NULL); @@ -2262,10 +2237,7 @@ static int _regulator_disable(struct regulator_dev *rdev) rdev->use_count = 0; } else if (rdev->use_count > 1) { - - if (rdev->constraints && - (rdev->constraints->valid_ops_mask & - REGULATOR_CHANGE_DRMS)) + if (regulator_ops_is_valid(rdev, REGULATOR_CHANGE_DRMS)) drms_uA_update(rdev); rdev->use_count--; @@ -2509,8 +2481,7 @@ int regulator_can_change_voltage(struct regulator *regulator) { struct regulator_dev *rdev = regulator->rdev; - if (rdev->constraints && - (rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_VOLTAGE)) { + if (regulator_ops_is_valid(rdev, REGULATOR_CHANGE_VOLTAGE)) { if (rdev->desc->n_voltages - rdev->desc->linear_min_sel > 1) return 1; @@ -2664,7 +2635,7 @@ int regulator_is_supported_voltage(struct regulator *regulator, int i, voltages, ret; /* If we can't change voltage check the current voltage */ - if (!(rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_VOLTAGE)) { + if (!regulator_ops_is_valid(rdev, REGULATOR_CHANGE_VOLTAGE)) { ret = regulator_get_voltage(regulator); if (ret >= 0) return min_uV <= ret && ret <= max_uV; @@ -2870,7 +2841,7 @@ static int regulator_set_voltage_unlocked(struct regulator *regulator, * return successfully even though the regulator does not support * changing the voltage. */ - if (!(rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_VOLTAGE)) { + if (!regulator_ops_is_valid(rdev, REGULATOR_CHANGE_VOLTAGE)) { current_uV = _regulator_get_voltage(rdev); if (min_uV <= current_uV && current_uV <= max_uV) { regulator->min_uV = min_uV; @@ -3385,8 +3356,7 @@ int regulator_allow_bypass(struct regulator *regulator, bool enable) if (!rdev->desc->ops->set_bypass) return 0; - if (rdev->constraints && - !(rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_BYPASS)) + if (!regulator_ops_is_valid(rdev, REGULATOR_CHANGE_BYPASS)) return 0; mutex_lock(&rdev->mutex); @@ -4406,7 +4376,7 @@ static int __init regulator_late_cleanup(struct device *dev, void *data) if (c && c->always_on) return 0; - if (c && !(c->valid_ops_mask & REGULATOR_CHANGE_STATUS)) + if (!regulator_ops_is_valid(rdev, REGULATOR_CHANGE_STATUS)) return 0; mutex_lock(&rdev->mutex); -- 2.30.2