mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-06 10:57:46 +00:00
Merge remote-tracking branch 'regulator/topic/linear-range' into HEAD
This commit is contained in:
Mark Brown
commit
e54e6aa245
5 changed files with 177 additions and 152 deletions
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@ -2078,6 +2078,43 @@ int regulator_list_voltage_linear(struct regulator_dev *rdev,
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}
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EXPORT_SYMBOL_GPL(regulator_list_voltage_linear);
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/**
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* regulator_list_voltage_linear_range - List voltages for linear ranges
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*
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* @rdev: Regulator device
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* @selector: Selector to convert into a voltage
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*
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* Regulators with a series of simple linear mappings between voltages
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* and selectors can set linear_ranges in the regulator descriptor and
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* then use this function as their list_voltage() operation,
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*/
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int regulator_list_voltage_linear_range(struct regulator_dev *rdev,
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unsigned int selector)
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{
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const struct regulator_linear_range *range;
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int i;
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if (!rdev->desc->n_linear_ranges) {
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BUG_ON(!rdev->desc->n_linear_ranges);
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return -EINVAL;
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}
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for (i = 0; i < rdev->desc->n_linear_ranges; i++) {
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range = &rdev->desc->linear_ranges[i];
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if (!(selector >= range->min_sel &&
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selector <= range->max_sel))
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continue;
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selector -= range->min_sel;
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return range->min_uV + (range->uV_step * selector);
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}
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return -EINVAL;
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}
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EXPORT_SYMBOL_GPL(regulator_list_voltage_linear_range);
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/**
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* regulator_list_voltage_table - List voltages with table based mapping
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*
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@ -2368,6 +2405,64 @@ int regulator_map_voltage_linear(struct regulator_dev *rdev,
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}
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EXPORT_SYMBOL_GPL(regulator_map_voltage_linear);
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/**
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* regulator_map_voltage_linear - map_voltage() for multiple linear ranges
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*
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* @rdev: Regulator to operate on
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* @min_uV: Lower bound for voltage
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* @max_uV: Upper bound for voltage
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*
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* Drivers providing linear_ranges in their descriptor can use this as
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* their map_voltage() callback.
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*/
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int regulator_map_voltage_linear_range(struct regulator_dev *rdev,
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int min_uV, int max_uV)
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{
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const struct regulator_linear_range *range;
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int ret = -EINVAL;
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int voltage, i;
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if (!rdev->desc->n_linear_ranges) {
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BUG_ON(!rdev->desc->n_linear_ranges);
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return -EINVAL;
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}
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for (i = 0; i < rdev->desc->n_linear_ranges; i++) {
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range = &rdev->desc->linear_ranges[i];
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if (!(min_uV <= range->max_uV && max_uV >= range->min_uV))
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continue;
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if (min_uV <= range->min_uV)
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min_uV = range->min_uV;
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/* range->uV_step == 0 means fixed voltage range */
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if (range->uV_step == 0) {
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ret = 0;
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} else {
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ret = DIV_ROUND_UP(min_uV - range->min_uV,
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range->uV_step);
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if (ret < 0)
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return ret;
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}
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ret += range->min_sel;
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break;
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}
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if (i == rdev->desc->n_linear_ranges)
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return -EINVAL;
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/* Map back into a voltage to verify we're still in bounds */
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voltage = rdev->desc->ops->list_voltage(rdev, ret);
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if (voltage < min_uV || voltage > max_uV)
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return -EINVAL;
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return ret;
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}
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EXPORT_SYMBOL_GPL(regulator_map_voltage_linear_range);
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static int _regulator_do_set_voltage(struct regulator_dev *rdev,
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int min_uV, int max_uV)
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{
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@ -62,41 +62,12 @@ static irqreturn_t wm831x_ldo_uv_irq(int irq, void *data)
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* General purpose LDOs
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*/
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#define WM831X_GP_LDO_SELECTOR_LOW 0xe
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#define WM831X_GP_LDO_MAX_SELECTOR 0x1f
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static int wm831x_gp_ldo_list_voltage(struct regulator_dev *rdev,
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unsigned int selector)
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{
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/* 0.9-1.6V in 50mV steps */
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if (selector <= WM831X_GP_LDO_SELECTOR_LOW)
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return 900000 + (selector * 50000);
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/* 1.7-3.3V in 100mV steps */
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if (selector <= WM831X_GP_LDO_MAX_SELECTOR)
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return 1600000 + ((selector - WM831X_GP_LDO_SELECTOR_LOW)
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* 100000);
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return -EINVAL;
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}
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static int wm831x_gp_ldo_map_voltage(struct regulator_dev *rdev,
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int min_uV, int max_uV)
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{
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int volt, vsel;
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if (min_uV < 900000)
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vsel = 0;
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else if (min_uV < 1700000)
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vsel = ((min_uV - 900000) / 50000);
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else
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vsel = ((min_uV - 1700000) / 100000)
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+ WM831X_GP_LDO_SELECTOR_LOW + 1;
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volt = wm831x_gp_ldo_list_voltage(rdev, vsel);
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if (volt < min_uV || volt > max_uV)
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return -EINVAL;
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return vsel;
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}
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static const struct regulator_linear_range wm831x_gp_ldo_ranges[] = {
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{ .min_uV = 900000, .max_uV = 1650000, .min_sel = 0, .max_sel = 14,
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.uV_step = 50000 },
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{ .min_uV = 1700000, .max_uV = 3300000, .min_sel = 15, .max_sel = 31,
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.uV_step = 100000 },
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};
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static int wm831x_gp_ldo_set_suspend_voltage(struct regulator_dev *rdev,
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int uV)
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@ -105,7 +76,7 @@ static int wm831x_gp_ldo_set_suspend_voltage(struct regulator_dev *rdev,
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struct wm831x *wm831x = ldo->wm831x;
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int sel, reg = ldo->base + WM831X_LDO_SLEEP_CONTROL;
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sel = wm831x_gp_ldo_map_voltage(rdev, uV, uV);
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sel = regulator_map_voltage_linear_range(rdev, uV, uV);
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if (sel < 0)
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return sel;
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@ -230,8 +201,8 @@ static unsigned int wm831x_gp_ldo_get_optimum_mode(struct regulator_dev *rdev,
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static struct regulator_ops wm831x_gp_ldo_ops = {
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.list_voltage = wm831x_gp_ldo_list_voltage,
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.map_voltage = wm831x_gp_ldo_map_voltage,
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.list_voltage = regulator_list_voltage_linear_range,
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.map_voltage = regulator_map_voltage_linear_range,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.set_suspend_voltage = wm831x_gp_ldo_set_suspend_voltage,
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@ -290,7 +261,7 @@ static int wm831x_gp_ldo_probe(struct platform_device *pdev)
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ldo->desc.id = id;
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ldo->desc.type = REGULATOR_VOLTAGE;
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ldo->desc.n_voltages = WM831X_GP_LDO_MAX_SELECTOR + 1;
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ldo->desc.n_voltages = 32;
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ldo->desc.ops = &wm831x_gp_ldo_ops;
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ldo->desc.owner = THIS_MODULE;
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ldo->desc.vsel_reg = ldo->base + WM831X_LDO_ON_CONTROL;
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@ -299,6 +270,8 @@ static int wm831x_gp_ldo_probe(struct platform_device *pdev)
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ldo->desc.enable_mask = 1 << id;
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ldo->desc.bypass_reg = ldo->base;
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ldo->desc.bypass_mask = WM831X_LDO1_SWI;
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ldo->desc.linear_ranges = wm831x_gp_ldo_ranges;
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ldo->desc.n_linear_ranges = ARRAY_SIZE(wm831x_gp_ldo_ranges);
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config.dev = pdev->dev.parent;
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if (pdata)
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@ -358,43 +331,12 @@ static struct platform_driver wm831x_gp_ldo_driver = {
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* Analogue LDOs
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*/
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#define WM831X_ALDO_SELECTOR_LOW 0xc
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#define WM831X_ALDO_MAX_SELECTOR 0x1f
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static int wm831x_aldo_list_voltage(struct regulator_dev *rdev,
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unsigned int selector)
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{
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/* 1-1.6V in 50mV steps */
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if (selector <= WM831X_ALDO_SELECTOR_LOW)
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return 1000000 + (selector * 50000);
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/* 1.7-3.5V in 100mV steps */
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if (selector <= WM831X_ALDO_MAX_SELECTOR)
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return 1600000 + ((selector - WM831X_ALDO_SELECTOR_LOW)
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* 100000);
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return -EINVAL;
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}
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static int wm831x_aldo_map_voltage(struct regulator_dev *rdev,
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int min_uV, int max_uV)
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{
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int volt, vsel;
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if (min_uV < 1000000)
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vsel = 0;
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else if (min_uV < 1700000)
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vsel = ((min_uV - 1000000) / 50000);
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else
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vsel = ((min_uV - 1700000) / 100000)
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+ WM831X_ALDO_SELECTOR_LOW + 1;
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volt = wm831x_aldo_list_voltage(rdev, vsel);
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if (volt < min_uV || volt > max_uV)
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return -EINVAL;
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return vsel;
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}
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static const struct regulator_linear_range wm831x_aldo_ranges[] = {
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{ .min_uV = 1000000, .max_uV = 1650000, .min_sel = 0, .max_sel = 12,
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.uV_step = 50000 },
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{ .min_uV = 1700000, .max_uV = 3500000, .min_sel = 13, .max_sel = 31,
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.uV_step = 100000 },
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};
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static int wm831x_aldo_set_suspend_voltage(struct regulator_dev *rdev,
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int uV)
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@ -403,7 +345,7 @@ static int wm831x_aldo_set_suspend_voltage(struct regulator_dev *rdev,
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struct wm831x *wm831x = ldo->wm831x;
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int sel, reg = ldo->base + WM831X_LDO_SLEEP_CONTROL;
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sel = wm831x_aldo_map_voltage(rdev, uV, uV);
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sel = regulator_map_voltage_linear_range(rdev, uV, uV);
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if (sel < 0)
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return sel;
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@ -486,8 +428,8 @@ static int wm831x_aldo_get_status(struct regulator_dev *rdev)
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}
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static struct regulator_ops wm831x_aldo_ops = {
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.list_voltage = wm831x_aldo_list_voltage,
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.map_voltage = wm831x_aldo_map_voltage,
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.list_voltage = regulator_list_voltage_linear_range,
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.map_voltage = regulator_map_voltage_linear_range,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.set_suspend_voltage = wm831x_aldo_set_suspend_voltage,
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@ -545,7 +487,9 @@ static int wm831x_aldo_probe(struct platform_device *pdev)
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ldo->desc.id = id;
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ldo->desc.type = REGULATOR_VOLTAGE;
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ldo->desc.n_voltages = WM831X_ALDO_MAX_SELECTOR + 1;
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ldo->desc.n_voltages = 32;
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ldo->desc.linear_ranges = wm831x_aldo_ranges;
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ldo->desc.n_linear_ranges = ARRAY_SIZE(wm831x_aldo_ranges);
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ldo->desc.ops = &wm831x_aldo_ops;
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ldo->desc.owner = THIS_MODULE;
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ldo->desc.vsel_reg = ldo->base + WM831X_LDO_ON_CONTROL;
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@ -542,41 +542,12 @@ static int wm8350_dcdc_set_suspend_mode(struct regulator_dev *rdev,
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return 0;
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}
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static int wm8350_ldo_list_voltage(struct regulator_dev *rdev,
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unsigned selector)
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{
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if (selector > WM8350_LDO1_VSEL_MASK)
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return -EINVAL;
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if (selector < 16)
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return (selector * 50000) + 900000;
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else
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return ((selector - 16) * 100000) + 1800000;
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}
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static int wm8350_ldo_map_voltage(struct regulator_dev *rdev, int min_uV,
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int max_uV)
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{
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int volt, sel;
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int min_mV = min_uV / 1000;
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int max_mV = max_uV / 1000;
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if (min_mV < 900 || min_mV > 3300)
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return -EINVAL;
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if (max_mV < 900 || max_mV > 3300)
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return -EINVAL;
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if (min_mV < 1800) /* step size is 50mV < 1800mV */
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sel = DIV_ROUND_UP(min_uV - 900, 50);
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else /* step size is 100mV > 1800mV */
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sel = DIV_ROUND_UP(min_uV - 1800, 100) + 16;
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volt = wm8350_ldo_list_voltage(rdev, sel);
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if (volt < min_uV || volt > max_uV)
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return -EINVAL;
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return sel;
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}
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static const struct regulator_linear_range wm8350_ldo_ranges[] = {
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{ .min_uV = 900000, .max_uV = 1750000, .min_sel = 0, .max_sel = 15,
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.uV_step = 50000 },
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{ .min_uV = 1800000, .max_uV = 3300000, .min_sel = 16, .max_sel = 31,
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.uV_step = 100000 },
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};
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static int wm8350_ldo_set_suspend_voltage(struct regulator_dev *rdev, int uV)
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{
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@ -603,7 +574,7 @@ static int wm8350_ldo_set_suspend_voltage(struct regulator_dev *rdev, int uV)
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return -EINVAL;
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}
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sel = wm8350_ldo_map_voltage(rdev, uV, uV);
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sel = regulator_map_voltage_linear_range(rdev, uV, uV);
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if (sel < 0)
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return -EINVAL;
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@ -998,10 +969,10 @@ static struct regulator_ops wm8350_dcdc2_5_ops = {
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};
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static struct regulator_ops wm8350_ldo_ops = {
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.map_voltage = wm8350_ldo_map_voltage,
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.map_voltage = regulator_map_voltage_linear_range,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.list_voltage = wm8350_ldo_list_voltage,
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.list_voltage = regulator_list_voltage_linear_range,
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.is_enabled = regulator_is_enabled_regmap,
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@ -1108,6 +1079,8 @@ static const struct regulator_desc wm8350_reg[NUM_WM8350_REGULATORS] = {
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.irq = WM8350_IRQ_UV_LDO1,
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.type = REGULATOR_VOLTAGE,
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.n_voltages = WM8350_LDO1_VSEL_MASK + 1,
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.linear_ranges = wm8350_ldo_ranges,
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.n_linear_ranges = ARRAY_SIZE(wm8350_ldo_ranges),
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.vsel_reg = WM8350_LDO1_CONTROL,
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.vsel_mask = WM8350_LDO1_VSEL_MASK,
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.enable_reg = WM8350_DCDC_LDO_REQUESTED,
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@ -1121,6 +1094,8 @@ static const struct regulator_desc wm8350_reg[NUM_WM8350_REGULATORS] = {
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.irq = WM8350_IRQ_UV_LDO2,
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.type = REGULATOR_VOLTAGE,
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.n_voltages = WM8350_LDO2_VSEL_MASK + 1,
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.linear_ranges = wm8350_ldo_ranges,
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.n_linear_ranges = ARRAY_SIZE(wm8350_ldo_ranges),
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.vsel_reg = WM8350_LDO2_CONTROL,
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.vsel_mask = WM8350_LDO2_VSEL_MASK,
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.enable_reg = WM8350_DCDC_LDO_REQUESTED,
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@ -1134,6 +1109,8 @@ static const struct regulator_desc wm8350_reg[NUM_WM8350_REGULATORS] = {
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.irq = WM8350_IRQ_UV_LDO3,
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.type = REGULATOR_VOLTAGE,
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.n_voltages = WM8350_LDO3_VSEL_MASK + 1,
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.linear_ranges = wm8350_ldo_ranges,
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.n_linear_ranges = ARRAY_SIZE(wm8350_ldo_ranges),
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.vsel_reg = WM8350_LDO3_CONTROL,
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.vsel_mask = WM8350_LDO3_VSEL_MASK,
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.enable_reg = WM8350_DCDC_LDO_REQUESTED,
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@ -1147,6 +1124,8 @@ static const struct regulator_desc wm8350_reg[NUM_WM8350_REGULATORS] = {
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.irq = WM8350_IRQ_UV_LDO4,
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.type = REGULATOR_VOLTAGE,
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.n_voltages = WM8350_LDO4_VSEL_MASK + 1,
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.linear_ranges = wm8350_ldo_ranges,
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.n_linear_ranges = ARRAY_SIZE(wm8350_ldo_ranges),
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.vsel_reg = WM8350_LDO4_CONTROL,
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.vsel_mask = WM8350_LDO4_VSEL_MASK,
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.enable_reg = WM8350_DCDC_LDO_REQUESTED,
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|
|
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@ -19,47 +19,21 @@
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|||
#include <linux/regulator/driver.h>
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||||
#include <linux/mfd/wm8400-private.h>
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||||
|
||||
static int wm8400_ldo_list_voltage(struct regulator_dev *dev,
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||||
unsigned selector)
|
||||
{
|
||||
if (selector > WM8400_LDO1_VSEL_MASK)
|
||||
return -EINVAL;
|
||||
|
||||
if (selector < 15)
|
||||
return 900000 + (selector * 50000);
|
||||
else
|
||||
return 1700000 + ((selector - 15) * 100000);
|
||||
}
|
||||
|
||||
static int wm8400_ldo_map_voltage(struct regulator_dev *dev,
|
||||
int min_uV, int max_uV)
|
||||
{
|
||||
u16 val;
|
||||
int volt;
|
||||
|
||||
if (min_uV < 900000 || min_uV > 3300000)
|
||||
return -EINVAL;
|
||||
|
||||
if (min_uV < 1700000) /* Steps of 50mV from 900mV; */
|
||||
val = DIV_ROUND_UP(min_uV - 900000, 50000);
|
||||
else /* Steps of 100mV from 1700mV */
|
||||
val = DIV_ROUND_UP(min_uV - 1700000, 100000) + 15;
|
||||
|
||||
volt = wm8400_ldo_list_voltage(dev, val);
|
||||
if (volt < min_uV || volt > max_uV)
|
||||
return -EINVAL;
|
||||
|
||||
return val;
|
||||
}
|
||||
static const struct regulator_linear_range wm8400_ldo_ranges[] = {
|
||||
{ .min_uV = 900000, .max_uV = 1600000, .min_sel = 0, .max_sel = 14,
|
||||
.uV_step = 50000 },
|
||||
{ .min_uV = 1700000, .max_uV = 3300000, .min_sel = 15, .max_sel = 31,
|
||||
.uV_step = 100000 },
|
||||
};
|
||||
|
||||
static struct regulator_ops wm8400_ldo_ops = {
|
||||
.is_enabled = regulator_is_enabled_regmap,
|
||||
.enable = regulator_enable_regmap,
|
||||
.disable = regulator_disable_regmap,
|
||||
.list_voltage = wm8400_ldo_list_voltage,
|
||||
.list_voltage = regulator_list_voltage_linear_range,
|
||||
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
||||
.set_voltage_sel = regulator_set_voltage_sel_regmap,
|
||||
.map_voltage = wm8400_ldo_map_voltage,
|
||||
.map_voltage = regulator_map_voltage_linear_range,
|
||||
};
|
||||
|
||||
static unsigned int wm8400_dcdc_get_mode(struct regulator_dev *dev)
|
||||
|
|
@ -155,6 +129,8 @@ static struct regulator_desc regulators[] = {
|
|||
.enable_reg = WM8400_LDO1_CONTROL,
|
||||
.enable_mask = WM8400_LDO1_ENA,
|
||||
.n_voltages = WM8400_LDO1_VSEL_MASK + 1,
|
||||
.linear_ranges = wm8400_ldo_ranges,
|
||||
.n_linear_ranges = ARRAY_SIZE(wm8400_ldo_ranges),
|
||||
.vsel_reg = WM8400_LDO1_CONTROL,
|
||||
.vsel_mask = WM8400_LDO1_VSEL_MASK,
|
||||
.type = REGULATOR_VOLTAGE,
|
||||
|
|
@ -167,6 +143,8 @@ static struct regulator_desc regulators[] = {
|
|||
.enable_reg = WM8400_LDO2_CONTROL,
|
||||
.enable_mask = WM8400_LDO2_ENA,
|
||||
.n_voltages = WM8400_LDO2_VSEL_MASK + 1,
|
||||
.linear_ranges = wm8400_ldo_ranges,
|
||||
.n_linear_ranges = ARRAY_SIZE(wm8400_ldo_ranges),
|
||||
.type = REGULATOR_VOLTAGE,
|
||||
.vsel_reg = WM8400_LDO2_CONTROL,
|
||||
.vsel_mask = WM8400_LDO2_VSEL_MASK,
|
||||
|
|
@ -179,6 +157,8 @@ static struct regulator_desc regulators[] = {
|
|||
.enable_reg = WM8400_LDO3_CONTROL,
|
||||
.enable_mask = WM8400_LDO3_ENA,
|
||||
.n_voltages = WM8400_LDO3_VSEL_MASK + 1,
|
||||
.linear_ranges = wm8400_ldo_ranges,
|
||||
.n_linear_ranges = ARRAY_SIZE(wm8400_ldo_ranges),
|
||||
.vsel_reg = WM8400_LDO3_CONTROL,
|
||||
.vsel_mask = WM8400_LDO3_VSEL_MASK,
|
||||
.type = REGULATOR_VOLTAGE,
|
||||
|
|
@ -191,6 +171,8 @@ static struct regulator_desc regulators[] = {
|
|||
.enable_reg = WM8400_LDO4_CONTROL,
|
||||
.enable_mask = WM8400_LDO4_ENA,
|
||||
.n_voltages = WM8400_LDO4_VSEL_MASK + 1,
|
||||
.linear_ranges = wm8400_ldo_ranges,
|
||||
.n_linear_ranges = ARRAY_SIZE(wm8400_ldo_ranges),
|
||||
.vsel_reg = WM8400_LDO4_CONTROL,
|
||||
.vsel_mask = WM8400_LDO4_VSEL_MASK,
|
||||
.type = REGULATOR_VOLTAGE,
|
||||
|
|
|
|||
|
|
@ -39,6 +39,24 @@ enum regulator_status {
|
|||
REGULATOR_STATUS_UNDEFINED,
|
||||
};
|
||||
|
||||
/**
|
||||
* Specify a range of voltages for regulator_map_linar_range() and
|
||||
* regulator_list_linear_range().
|
||||
*
|
||||
* @min_uV: Lowest voltage in range
|
||||
* @max_uV: Highest voltage in range
|
||||
* @min_sel: Lowest selector for range
|
||||
* @max_sel: Highest selector for range
|
||||
* @uV_step: Step size
|
||||
*/
|
||||
struct regulator_linear_range {
|
||||
unsigned int min_uV;
|
||||
unsigned int max_uV;
|
||||
unsigned int min_sel;
|
||||
unsigned int max_sel;
|
||||
unsigned int uV_step;
|
||||
};
|
||||
|
||||
/**
|
||||
* struct regulator_ops - regulator operations.
|
||||
*
|
||||
|
|
@ -223,6 +241,9 @@ struct regulator_desc {
|
|||
unsigned int linear_min_sel;
|
||||
unsigned int ramp_delay;
|
||||
|
||||
const struct regulator_linear_range *linear_ranges;
|
||||
int n_linear_ranges;
|
||||
|
||||
const unsigned int *volt_table;
|
||||
|
||||
unsigned int vsel_reg;
|
||||
|
|
@ -326,10 +347,14 @@ int regulator_mode_to_status(unsigned int);
|
|||
|
||||
int regulator_list_voltage_linear(struct regulator_dev *rdev,
|
||||
unsigned int selector);
|
||||
int regulator_list_voltage_linear_range(struct regulator_dev *rdev,
|
||||
unsigned int selector);
|
||||
int regulator_list_voltage_table(struct regulator_dev *rdev,
|
||||
unsigned int selector);
|
||||
int regulator_map_voltage_linear(struct regulator_dev *rdev,
|
||||
int min_uV, int max_uV);
|
||||
int regulator_map_voltage_linear_range(struct regulator_dev *rdev,
|
||||
int min_uV, int max_uV);
|
||||
int regulator_map_voltage_iterate(struct regulator_dev *rdev,
|
||||
int min_uV, int max_uV);
|
||||
int regulator_map_voltage_ascend(struct regulator_dev *rdev,
|
||||
|
|
|
|||
Loading…
Reference in a new issue