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phy: phy-can-transceiver: Introduce can_transceiver_priv

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To prepare for dual-channel phy support, introduce can_transceiver_priv as
a higher level encapsulation for phy.

No functional changes.

Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
Link: https://patch.msgid.link/20251001-can-v7-2-fad29efc3884@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Peng Fan 2025-10-01 21:22:33 +08:00 committed by Vinod Koul
parent 05ace63d0b
commit c77464bd9b
1 changed files with 24 additions and 10 deletions
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34
drivers/phy/phy-can-transceiver.c
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@ -23,17 +23,24 @@ struct can_transceiver_phy {
struct phy *generic_phy;
struct gpio_desc *standby_gpio;
struct gpio_desc *enable_gpio;
struct can_transceiver_priv *priv;
};
struct can_transceiver_priv {
struct mux_state *mux_state;
int num_ch;
struct can_transceiver_phy can_transceiver_phy[] __counted_by(num_ch);
};
/* Power on function */
static int can_transceiver_phy_power_on(struct phy *phy)
{
struct can_transceiver_phy *can_transceiver_phy = phy_get_drvdata(phy);
struct can_transceiver_priv *priv = can_transceiver_phy->priv;
int ret;
if (can_transceiver_phy->mux_state) {
ret = mux_state_select(can_transceiver_phy->mux_state);
if (priv->mux_state) {
ret = mux_state_select(priv->mux_state);
if (ret) {
dev_err(&phy->dev, "Failed to select CAN mux: %d\n", ret);
return ret;
@ -51,13 +58,14 @@ static int can_transceiver_phy_power_on(struct phy *phy)
static int can_transceiver_phy_power_off(struct phy *phy)
{
struct can_transceiver_phy *can_transceiver_phy = phy_get_drvdata(phy);
struct can_transceiver_priv *priv = can_transceiver_phy->priv;
if (can_transceiver_phy->standby_gpio)
gpiod_set_value_cansleep(can_transceiver_phy->standby_gpio, 1);
if (can_transceiver_phy->enable_gpio)
gpiod_set_value_cansleep(can_transceiver_phy->enable_gpio, 0);
if (can_transceiver_phy->mux_state)
mux_state_deselect(can_transceiver_phy->mux_state);
if (priv->mux_state)
mux_state_deselect(priv->mux_state);
return 0;
}
@ -108,6 +116,7 @@ static int can_transceiver_phy_probe(struct platform_device *pdev)
struct phy_provider *phy_provider;
struct device *dev = &pdev->dev;
struct can_transceiver_phy *can_transceiver_phy;
struct can_transceiver_priv *priv;
const struct can_transceiver_data *drvdata;
const struct of_device_id *match;
struct phy *phy;
@ -115,20 +124,25 @@ static int can_transceiver_phy_probe(struct platform_device *pdev)
struct gpio_desc *enable_gpio;
struct mux_state *mux_state;
u32 max_bitrate = 0;
int err;
can_transceiver_phy = devm_kzalloc(dev, sizeof(struct can_transceiver_phy), GFP_KERNEL);
if (!can_transceiver_phy)
return -ENOMEM;
int err, num_ch = 1;
match = of_match_node(can_transceiver_phy_ids, pdev->dev.of_node);
drvdata = match->data;
priv = devm_kzalloc(dev, struct_size(priv, can_transceiver_phy, num_ch), GFP_KERNEL);
if (!priv)
return -ENOMEM;
priv->num_ch = num_ch;
platform_set_drvdata(pdev, priv);
can_transceiver_phy = &priv->can_transceiver_phy[0];
can_transceiver_phy->priv = priv;
mux_state = devm_mux_state_get_optional(dev, NULL);
if (IS_ERR(mux_state))
return PTR_ERR(mux_state);
can_transceiver_phy->mux_state = mux_state;
priv->mux_state = mux_state;
phy = devm_phy_create(dev, dev->of_node,
&can_transceiver_phy_ops);