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#define CAN_TRANSCEIVER_STB_PRESENT BIT(0) #define CAN_TRANSCEIVER_EN_PRESENT BIT(1) +#define CAN_TRANSCEIVER_DUAL_CH BIT(2) }; =20 struct can_transceiver_phy { @@ -29,6 +30,7 @@ struct can_transceiver_phy { struct can_transceiver_priv { struct can_transceiver_phy *can_transceiver_phy; struct mux_state *mux_state; + int num_ch; }; =20 /* Power on function */ @@ -81,6 +83,10 @@ static const struct can_transceiver_data tcan1043_drvdat= a =3D { .flags =3D CAN_TRANSCEIVER_STB_PRESENT | CAN_TRANSCEIVER_EN_PRESENT, }; =20 +static const struct can_transceiver_data tja1048_drvdata =3D { + .flags =3D CAN_TRANSCEIVER_STB_PRESENT | CAN_TRANSCEIVER_DUAL_CH, +}; + static const struct of_device_id can_transceiver_phy_ids[] =3D { { .compatible =3D "ti,tcan1042", @@ -90,6 +96,10 @@ static const struct of_device_id can_transceiver_phy_ids= [] =3D { .compatible =3D "ti,tcan1043", .data =3D &tcan1043_drvdata }, + { + .compatible =3D "nxp,tja1048", + .data =3D &tja1048_drvdata + }, { .compatible =3D "nxp,tjr1443", .data =3D &tcan1043_drvdata @@ -108,6 +118,25 @@ devm_mux_state_get_optional(struct device *dev, const = char *mux_name) return devm_mux_state_get(dev, mux_name); } =20 +static struct phy *can_transceiver_phy_xlate(struct device *dev, + const struct of_phandle_args *args) +{ + struct can_transceiver_priv *priv =3D dev_get_drvdata(dev); + u32 idx; + + if (priv->num_ch =3D=3D 1) + return priv->can_transceiver_phy[0].generic_phy; + + if (args->args_count !=3D 1) + return ERR_PTR(-EINVAL); + + idx =3D args->args[0]; + if (idx >=3D priv->num_ch) + return ERR_PTR(-EINVAL); + + return priv->can_transceiver_phy[idx].generic_phy; +} + static int can_transceiver_phy_probe(struct platform_device *pdev) { struct phy_provider *phy_provider; @@ -120,7 +149,8 @@ static int can_transceiver_phy_probe(struct platform_de= vice *pdev) struct gpio_desc *enable_gpio; struct mux_state *mux_state; u32 max_bitrate =3D 0; - int err; + int num_ch =3D 1; + int err, i; =20 match =3D of_match_node(can_transceiver_phy_ids, pdev->dev.of_node); drvdata =3D match->data; @@ -131,7 +161,11 @@ static int can_transceiver_phy_probe(struct platform_d= evice *pdev) =20 platform_set_drvdata(pdev, priv); =20 - priv->can_transceiver_phy =3D devm_kzalloc(dev, sizeof(struct can_transce= iver_phy), + if (drvdata->flags & CAN_TRANSCEIVER_DUAL_CH) + num_ch =3D 2; + + priv->num_ch =3D num_ch; + priv->can_transceiver_phy =3D devm_kcalloc(dev, num_ch, sizeof(struct can= _transceiver_phy), GFP_KERNEL); if (!priv->can_transceiver_phy) return -ENOMEM; @@ -142,38 +176,43 @@ static int can_transceiver_phy_probe(struct platform_= device *pdev) =20 priv->mux_state =3D mux_state; =20 - phy =3D devm_phy_create(dev, dev->of_node, - &can_transceiver_phy_ops); - if (IS_ERR(phy)) { - dev_err(dev, "failed to create can transceiver phy\n"); - return PTR_ERR(phy); - } - err =3D device_property_read_u32(dev, "max-bitrate", &max_bitrate); if ((err !=3D -EINVAL) && !max_bitrate) dev_warn(dev, "Invalid value for transceiver max bitrate. Ignoring bitra= te limit\n"); - phy->attrs.max_link_rate =3D max_bitrate; =20 - priv->can_transceiver_phy->generic_phy =3D phy; - priv->can_transceiver_phy->priv =3D priv; + for (i =3D 0; i < num_ch; i++) { + phy =3D devm_phy_create(dev, dev->of_node, &can_transceiver_phy_ops); + if (IS_ERR(phy)) { + dev_err(dev, "failed to create can transceiver phy\n"); + return PTR_ERR(phy); + } =20 - if (drvdata->flags & CAN_TRANSCEIVER_STB_PRESENT) { - standby_gpio =3D devm_gpiod_get_optional(dev, "standby", GPIOD_OUT_HIGH); - if (IS_ERR(standby_gpio)) - return PTR_ERR(standby_gpio); - priv->can_transceiver_phy->standby_gpio =3D standby_gpio; - } + phy->attrs.max_link_rate =3D max_bitrate; =20 - if (drvdata->flags & CAN_TRANSCEIVER_EN_PRESENT) { - enable_gpio =3D devm_gpiod_get_optional(dev, "enable", GPIOD_OUT_LOW); - if (IS_ERR(enable_gpio)) - return PTR_ERR(enable_gpio); - priv->can_transceiver_phy->enable_gpio =3D enable_gpio; - } + priv->can_transceiver_phy[i].generic_phy =3D phy; + priv->can_transceiver_phy[i].priv =3D priv; =20 - phy_set_drvdata(priv->can_transceiver_phy->generic_phy, priv->can_transce= iver_phy); + if (drvdata->flags & CAN_TRANSCEIVER_STB_PRESENT) { + standby_gpio =3D devm_gpiod_get_index_optional(dev, "standby", i, + GPIOD_OUT_HIGH); + if (IS_ERR(standby_gpio)) + return PTR_ERR(standby_gpio); + priv->can_transceiver_phy[i].standby_gpio =3D standby_gpio; + } + + if (drvdata->flags & CAN_TRANSCEIVER_EN_PRESENT) { + enable_gpio =3D devm_gpiod_get_index_optional(dev, "enable", i, + GPIOD_OUT_LOW); + if (IS_ERR(enable_gpio)) + return PTR_ERR(enable_gpio); + priv->can_transceiver_phy[i].enable_gpio =3D enable_gpio; + } + + phy_set_drvdata(priv->can_transceiver_phy[i].generic_phy, + &priv->can_transceiver_phy[i]); + } =20 - phy_provider =3D devm_of_phy_provider_register(dev, of_phy_simple_xlate); + phy_provider =3D devm_of_phy_provider_register(dev, can_transceiver_phy_x= late); =20 return PTR_ERR_OR_ZERO(phy_provider); } --=20 2.37.1