diff options
Diffstat (limited to 'drivers/mfd/axp20x.c')
| -rw-r--r-- | drivers/mfd/axp20x.c | 66 |
1 files changed, 27 insertions, 39 deletions
diff --git a/drivers/mfd/axp20x.c b/drivers/mfd/axp20x.c index 87603eeaa2..deaa969bab 100644 --- a/drivers/mfd/axp20x.c +++ b/drivers/mfd/axp20x.c @@ -22,7 +22,8 @@ #include <linux/mfd/axp20x.h> #include <linux/mfd/core.h> #include <linux/module.h> -#include <linux/of_device.h> +#include <linux/of.h> +#include <linux/property.h> #include <linux/reboot.h> #include <linux/regmap.h> #include <linux/regulator/consumer.h> @@ -1131,25 +1132,10 @@ static int axp20x_power_off(struct sys_off_data *data) int axp20x_match_device(struct axp20x_dev *axp20x) { struct device *dev = axp20x->dev; - const struct acpi_device_id *acpi_id; - const struct of_device_id *of_id; - - if (dev->of_node) { - of_id = of_match_device(dev->driver->of_match_table, dev); - if (!of_id) { - dev_err(dev, "Unable to match OF ID\n"); - return -ENODEV; - } - axp20x->variant = (long)of_id->data; - } else { - acpi_id = acpi_match_device(dev->driver->acpi_match_table, dev); - if (!acpi_id || !acpi_id->driver_data) { - dev_err(dev, "Unable to match ACPI ID and data\n"); - return -ENODEV; - } - axp20x->variant = (long)acpi_id->driver_data; - } + const struct mfd_cell *cells_no_irq = NULL; + int nr_cells_no_irq = 0; + axp20x->variant = (long)device_get_match_data(dev); switch (axp20x->variant) { case AXP152_ID: axp20x->nr_cells = ARRAY_SIZE(axp152_cells); @@ -1207,14 +1193,15 @@ int axp20x_match_device(struct axp20x_dev *axp20x) * if there is no interrupt line. */ if (of_property_read_bool(axp20x->dev->of_node, - "x-powers,self-working-mode") && - axp20x->irq > 0) { + "x-powers,self-working-mode")) { axp20x->nr_cells = ARRAY_SIZE(axp806_self_working_cells); axp20x->cells = axp806_self_working_cells; } else { axp20x->nr_cells = ARRAY_SIZE(axp806_cells); axp20x->cells = axp806_cells; } + nr_cells_no_irq = ARRAY_SIZE(axp806_cells); + cells_no_irq = axp806_cells; axp20x->regmap_cfg = &axp806_regmap_config; axp20x->regmap_irq_chip = &axp806_regmap_irq_chip; break; @@ -1238,24 +1225,8 @@ int axp20x_match_device(struct axp20x_dev *axp20x) axp20x->regmap_irq_chip = &axp803_regmap_irq_chip; break; case AXP15060_ID: - /* - * Don't register the power key part if there is no interrupt - * line. - * - * Since most use cases of AXP PMICs are Allwinner SOCs, board - * designers follow Allwinner's reference design and connects - * IRQ line to SOC, there's no need for those variants to deal - * with cases that IRQ isn't connected. However, AXP15660 is - * used by some other vendors' SOCs that didn't connect IRQ - * line, we need to deal with this case. - */ - if (axp20x->irq > 0) { - axp20x->nr_cells = ARRAY_SIZE(axp15060_cells); - axp20x->cells = axp15060_cells; - } else { - axp20x->nr_cells = ARRAY_SIZE(axp_regulator_only_cells); - axp20x->cells = axp_regulator_only_cells; - } + axp20x->nr_cells = ARRAY_SIZE(axp15060_cells); + axp20x->cells = axp15060_cells; axp20x->regmap_cfg = &axp15060_regmap_config; axp20x->regmap_irq_chip = &axp15060_regmap_irq_chip; break; @@ -1263,6 +1234,23 @@ int axp20x_match_device(struct axp20x_dev *axp20x) dev_err(dev, "unsupported AXP20X ID %lu\n", axp20x->variant); return -EINVAL; } + + /* + * Use an alternative cell array when no interrupt line is connected, + * since IRQs are required by some drivers. + * The default is the safe "regulator-only", as this works fine without + * an interrupt specified. + */ + if (axp20x->irq <= 0) { + if (cells_no_irq) { + axp20x->nr_cells = nr_cells_no_irq; + axp20x->cells = cells_no_irq; + } else { + axp20x->nr_cells = ARRAY_SIZE(axp_regulator_only_cells); + axp20x->cells = axp_regulator_only_cells; + } + } + dev_info(dev, "AXP20x variant %s found\n", axp20x_model_names[axp20x->variant]); |