drivers/net/pse-pd/pse_regulator.c

Source file repositories/reference/linux-study-clean/drivers/net/pse-pd/pse_regulator.c

File Facts

System
Linux kernel
Corpus path
drivers/net/pse-pd/pse_regulator.c
Extension
.c
Size
3655 bytes
Lines
156
Domain
Driver Families
Bucket
drivers/net
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct pse_reg_priv {
	struct pse_controller_dev pcdev;
	struct regulator *ps; /*power source */
	enum ethtool_podl_pse_admin_state admin_state;
};

static struct pse_reg_priv *to_pse_reg(struct pse_controller_dev *pcdev)
{
	return container_of(pcdev, struct pse_reg_priv, pcdev);
}

static int
pse_reg_pi_enable(struct pse_controller_dev *pcdev, int id)
{
	struct pse_reg_priv *priv = to_pse_reg(pcdev);
	int ret;

	ret = regulator_enable(priv->ps);
	if (ret)
		return ret;

	priv->admin_state = ETHTOOL_PODL_PSE_ADMIN_STATE_ENABLED;
	return 0;
}

static int
pse_reg_pi_disable(struct pse_controller_dev *pcdev, int id)
{
	struct pse_reg_priv *priv = to_pse_reg(pcdev);
	int ret;

	ret = regulator_disable(priv->ps);
	if (ret)
		return ret;

	priv->admin_state = ETHTOOL_PODL_PSE_ADMIN_STATE_DISABLED;
	return 0;
}

static int
pse_reg_pi_get_admin_state(struct pse_controller_dev *pcdev, int id,
			   struct pse_admin_state *admin_state)
{
	struct pse_reg_priv *priv = to_pse_reg(pcdev);

	admin_state->podl_admin_state = priv->admin_state;

	return 0;
}

static int
pse_reg_pi_get_pw_status(struct pse_controller_dev *pcdev, int id,
			 struct pse_pw_status *pw_status)
{
	struct pse_reg_priv *priv = to_pse_reg(pcdev);
	int ret;

	ret = regulator_is_enabled(priv->ps);
	if (ret < 0)
		return ret;

	if (!ret)
		pw_status->podl_pw_status =
			ETHTOOL_PODL_PSE_PW_D_STATUS_DISABLED;
	else
		pw_status->podl_pw_status =
			ETHTOOL_PODL_PSE_PW_D_STATUS_DELIVERING;

	return 0;
}

static const struct pse_controller_ops pse_reg_ops = {
	.pi_get_admin_state = pse_reg_pi_get_admin_state,
	.pi_get_pw_status = pse_reg_pi_get_pw_status,
	.pi_enable = pse_reg_pi_enable,
	.pi_disable = pse_reg_pi_disable,
};

static int
pse_reg_probe(struct platform_device *pdev)
{
	struct device *dev = &pdev->dev;
	struct pse_reg_priv *priv;
	int ret;

	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
	if (!priv)
		return -ENOMEM;

	if (!pdev->dev.of_node)

Annotation

Implementation Notes