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Message-Id: <20220208112226.9108-3-potin.lai@quantatw.com> Date: Tue, 8 Feb 2022 19:22:26 +0800 From: Potin Lai <potin.lai@...ntatw.com> To: Guenter Roeck <linux@...ck-us.net>, Heikki Krogerus <heikki.krogerus@...ux.intel.com>, Greg Kroah-Hartman <gregkh@...uxfoundation.org> Cc: linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org, Patrick Williams <patrick@...cx.xyz>, Potin Lai <potin.lai@...ntatw.com> Subject: [PATCH v2 2/2] usb: typec: fusb302: add support of supported_pd_rev Add support for passing supported PD rev to TCPM. If "supported-pd-rev" property exist, then return supported_pd_rev as defined value in DTS, otherwise return PD_MAX_REV Example of DTS: fusb302: typec-portc@22 { compatible = "fcs,fusb302"; reg = <0x22>; ... supported-pd-rev=<1>; // PD_REV20 ... }; Signed-off-by: Potin Lai <potin.lai@...ntatw.com> --- drivers/usb/typec/tcpm/fusb302.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/usb/typec/tcpm/fusb302.c b/drivers/usb/typec/tcpm/fusb302.c index 72f9001b0792..8cff92d58b96 100644 --- a/drivers/usb/typec/tcpm/fusb302.c +++ b/drivers/usb/typec/tcpm/fusb302.c @@ -109,6 +109,9 @@ struct fusb302_chip { enum typec_cc_status cc2; u32 snk_pdo[PDO_MAX_OBJECTS]; + /* supported pd rev */ + u32 supported_pd_rev; + #ifdef CONFIG_DEBUG_FS struct dentry *dentry; /* lock for log buffer access */ @@ -1056,6 +1059,13 @@ static int tcpm_pd_transmit(struct tcpc_dev *dev, enum tcpm_transmit_type type, return ret; } +static u32 tcpm_supported_pd_rev(struct tcpc_dev *dev) +{ + struct fusb302_chip *chip = container_of(dev, struct fusb302_chip, + tcpc_dev); + return chip->supported_pd_rev; +} + static enum typec_cc_status fusb302_bc_lvl_to_cc(u8 bc_lvl) { if (bc_lvl == FUSB_REG_STATUS0_BC_LVL_1230_MAX) @@ -1129,6 +1139,7 @@ static void init_tcpc_dev(struct tcpc_dev *fusb302_tcpc_dev) fusb302_tcpc_dev->set_roles = tcpm_set_roles; fusb302_tcpc_dev->start_toggling = tcpm_start_toggling; fusb302_tcpc_dev->pd_transmit = tcpm_pd_transmit; + fusb302_tcpc_dev->supported_pd_rev = tcpm_supported_pd_rev; } static const char * const cc_polarity_name[] = { @@ -1683,6 +1694,7 @@ static int fusb302_probe(struct i2c_client *client, struct fusb302_chip *chip; struct i2c_adapter *adapter = client->adapter; struct device *dev = &client->dev; + struct device_node *np = dev->of_node; const char *name; int ret = 0; @@ -1756,6 +1768,14 @@ static int fusb302_probe(struct i2c_client *client, dev_err(dev, "cannot request IRQ for GPIO Int_N, ret=%d", ret); goto tcpm_unregister_port; } + + if (of_property_read_u32(np, "supported-pd-rev", + &chip->supported_pd_rev) < 0) { + chip->supported_pd_rev = PD_MAX_REV; + } else if (chip->supported_pd_rev > PD_MAX_REV) { + chip->supported_pd_rev = PD_MAX_REV; + } + enable_irq_wake(chip->gpio_int_n_irq); i2c_set_clientdata(client, chip); -- 2.17.1
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