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Subject[PATCH 4/7] power: supply: axp20x_usb_power: Use a match structure
Date
Instead of ad-hoc variant ID checks throughout the code, let's start
moving the variant-specific details to a match structure. This allows
for future flexibility, and it better matches the other axp20x power
supply drivers.

Signed-off-by: Samuel Holland <samuel@sholland.org>
---
drivers/power/supply/axp20x_usb_power.c | 91 ++++++++++++++++---------
1 file changed, 60 insertions(+), 31 deletions(-)

diff --git a/drivers/power/supply/axp20x_usb_power.c b/drivers/power/supply/axp20x_usb_power.c
index dd3f3f12e41d..2d7272e19a87 100644
--- a/drivers/power/supply/axp20x_usb_power.c
+++ b/drivers/power/supply/axp20x_usb_power.c
@@ -405,6 +405,50 @@ static const struct power_supply_desc axp22x_usb_power_desc = {
.set_property = axp20x_usb_power_set_property,
};

+static const char * const axp20x_irq_names[] = {
+ "VBUS_PLUGIN",
+ "VBUS_REMOVAL",
+ "VBUS_VALID",
+ "VBUS_NOT_VALID",
+ NULL
+};
+
+static const char * const axp22x_irq_names[] = {
+ "VBUS_PLUGIN",
+ "VBUS_REMOVAL",
+ NULL
+};
+
+struct axp_data {
+ const struct power_supply_desc *power_desc;
+ const char * const *irq_names;
+ enum axp20x_variants axp20x_id;
+};
+
+static const struct axp_data axp202_data = {
+ .power_desc = &axp20x_usb_power_desc,
+ .irq_names = axp20x_irq_names,
+ .axp20x_id = AXP202_ID,
+};
+
+static const struct axp_data axp221_data = {
+ .power_desc = &axp22x_usb_power_desc,
+ .irq_names = axp22x_irq_names,
+ .axp20x_id = AXP221_ID,
+};
+
+static const struct axp_data axp223_data = {
+ .power_desc = &axp22x_usb_power_desc,
+ .irq_names = axp22x_irq_names,
+ .axp20x_id = AXP223_ID,
+};
+
+static const struct axp_data axp813_data = {
+ .power_desc = &axp22x_usb_power_desc,
+ .irq_names = axp22x_irq_names,
+ .axp20x_id = AXP813_ID,
+};
+
static int configure_iio_channels(struct platform_device *pdev,
struct axp20x_usb_power *power)
{
@@ -440,12 +484,7 @@ static int axp20x_usb_power_probe(struct platform_device *pdev)
struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
struct power_supply_config psy_cfg = {};
struct axp20x_usb_power *power;
- static const char * const axp20x_irq_names[] = { "VBUS_PLUGIN",
- "VBUS_REMOVAL", "VBUS_VALID", "VBUS_NOT_VALID", NULL };
- static const char * const axp22x_irq_names[] = {
- "VBUS_PLUGIN", "VBUS_REMOVAL", NULL };
- const char * const *irq_names;
- const struct power_supply_desc *usb_power_desc;
+ const struct axp_data *axp_data;
int i, irq, ret;

if (!of_device_is_available(pdev->dev.of_node))
@@ -456,15 +495,16 @@ static int axp20x_usb_power_probe(struct platform_device *pdev)
return -EINVAL;
}

+ axp_data = of_device_get_match_data(&pdev->dev);
+
power = devm_kzalloc(&pdev->dev, sizeof(*power), GFP_KERNEL);
if (!power)
return -ENOMEM;

- platform_set_drvdata(pdev, power);
- power->axp20x_id = (enum axp20x_variants)of_device_get_match_data(
- &pdev->dev);
-
power->regmap = axp20x->regmap;
+ power->axp20x_id = axp_data->axp20x_id;
+
+ platform_set_drvdata(pdev, power);

if (power->axp20x_id == AXP202_ID) {
/* Enable vbus valid checking */
@@ -481,18 +521,6 @@ static int axp20x_usb_power_probe(struct platform_device *pdev)

if (ret)
return ret;
-
- usb_power_desc = &axp20x_usb_power_desc;
- irq_names = axp20x_irq_names;
- } else if (power->axp20x_id == AXP221_ID ||
- power->axp20x_id == AXP223_ID ||
- power->axp20x_id == AXP813_ID) {
- usb_power_desc = &axp22x_usb_power_desc;
- irq_names = axp22x_irq_names;
- } else {
- dev_err(&pdev->dev, "Unsupported AXP variant: %ld\n",
- axp20x->variant);
- return -EINVAL;
}

if (power->axp20x_id == AXP813_ID) {
@@ -504,17 +532,18 @@ static int axp20x_usb_power_probe(struct platform_device *pdev)
psy_cfg.of_node = pdev->dev.of_node;
psy_cfg.drv_data = power;

- power->supply = devm_power_supply_register(&pdev->dev, usb_power_desc,
+ power->supply = devm_power_supply_register(&pdev->dev,
+ axp_data->power_desc,
&psy_cfg);
if (IS_ERR(power->supply))
return PTR_ERR(power->supply);

/* Request irqs after registering, as irqs may trigger immediately */
- for (i = 0; irq_names[i]; i++) {
- irq = platform_get_irq_byname(pdev, irq_names[i]);
+ for (i = 0; axp_data->irq_names[i]; i++) {
+ irq = platform_get_irq_byname(pdev, axp_data->irq_names[i]);
if (irq < 0) {
dev_warn(&pdev->dev, "No IRQ for %s: %d\n",
- irq_names[i], irq);
+ axp_data->irq_names[i], irq);
continue;
}
irq = regmap_irq_get_virq(axp20x->regmap_irqc, irq);
@@ -522,7 +551,7 @@ static int axp20x_usb_power_probe(struct platform_device *pdev)
axp20x_usb_power_irq, 0, DRVNAME, power);
if (ret < 0)
dev_warn(&pdev->dev, "Error requesting %s IRQ: %d\n",
- irq_names[i], ret);
+ axp_data->irq_names[i], ret);
}

INIT_DELAYED_WORK(&power->vbus_detect, axp20x_usb_power_poll_vbus);
@@ -544,16 +573,16 @@ static int axp20x_usb_power_remove(struct platform_device *pdev)
static const struct of_device_id axp20x_usb_power_match[] = {
{
.compatible = "x-powers,axp202-usb-power-supply",
- .data = (void *)AXP202_ID,
+ .data = &axp202_data,
}, {
.compatible = "x-powers,axp221-usb-power-supply",
- .data = (void *)AXP221_ID,
+ .data = &axp221_data,
}, {
.compatible = "x-powers,axp223-usb-power-supply",
- .data = (void *)AXP223_ID,
+ .data = &axp223_data,
}, {
.compatible = "x-powers,axp813-usb-power-supply",
- .data = (void *)AXP813_ID,
+ .data = &axp813_data,
}, { /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, axp20x_usb_power_match);
--
2.23.0
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