linux-kernel - Re: [PATCH 09/11] platform/x86: intel_cht_int33fe: Provide fwnode for the USB connector

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Message-ID: <CAHp75Vcd==tp4VYrZ9iaYhz1k21EWD0uzVFdOSLKd83oFqcJxg@mail.gmail.com>
Date:   Mon, 8 Apr 2019 19:10:49 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Cc:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Hans de Goede <hdegoede@...hat.com>,
        Darren Hart <dvhart@...radead.org>,
        Andy Shevchenko <andy@...radead.org>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Platform Driver <platform-driver-x86@...r.kernel.org>
Subject: Re: [PATCH 09/11] platform/x86: intel_cht_int33fe: Provide fwnode for
 the USB connector

On Wed, Apr 3, 2019 at 7:46 PM Heikki Krogerus
<heikki.krogerus@...ux.intel.com> wrote:
>
> In ACPI, and now also in DT, the USB connectors usually have
> their own device nodes. In case of USB Type-C, those
> connector (port) nodes are child nodes of the controller or
> PHY device, in our case the fusb302. The software fwnodes
> allow us to create a similar child node for fusb302 that
> represents the connector also on Intel CHT.
>
> This makes it possible replace the fusb302 specific device
> properties which were deprecated with the common USB
> connector properties that tcpm.c is able to use directly.
>

Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>

> Signed-off-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
> ---
>  drivers/platform/x86/intel_cht_int33fe.c | 37 ++++++++++++++++++++++--
>  1 file changed, 34 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/platform/x86/intel_cht_int33fe.c b/drivers/platform/x86/intel_cht_int33fe.c
> index 2f12ce154489..544e0b90aa07 100644
> --- a/drivers/platform/x86/intel_cht_int33fe.c
> +++ b/drivers/platform/x86/intel_cht_int33fe.c
> @@ -25,6 +25,7 @@
>  #include <linux/regulator/consumer.h>
>  #include <linux/slab.h>
>  #include <linux/pci.h>
> +#include <linux/usb/pd.h>
>
>  #define EXPECTED_PTYPE         4
>
> @@ -32,6 +33,7 @@ enum {
>         INT33FE_NODE_FUSB302,
>         INT33FE_NODE_MAX17047,
>         INT33FE_NODE_PI3USB30532,
> +       INT33FE_NODE_USB_CONNECTOR,
>         INT33FE_NODE_MAX,
>  };
>
> @@ -112,9 +114,29 @@ cht_int33fe_max17047(struct device *dev, struct cht_int33fe_data *data)
>
>  static const struct property_entry fusb302_props[] = {
>         PROPERTY_ENTRY_STRING("linux,extcon-name", "cht_wcove_pwrsrc"),
> -       PROPERTY_ENTRY_U32("fcs,max-sink-microvolt", 12000000),
> -       PROPERTY_ENTRY_U32("fcs,max-sink-microamp",   3000000),
> -       PROPERTY_ENTRY_U32("fcs,max-sink-microwatt", 36000000),
> +       { }
> +};
> +
> +#define PDO_FIXED_FLAGS \
> +       (PDO_FIXED_DUAL_ROLE | PDO_FIXED_DATA_SWAP | PDO_FIXED_USB_COMM)
> +
> +static const u32 src_pdo[] = {
> +       PDO_FIXED(5000, 1500, PDO_FIXED_FLAGS),
> +};
> +
> +static const u32 snk_pdo[] = {
> +       PDO_FIXED(5000, 400, PDO_FIXED_FLAGS),
> +       PDO_VAR(5000, 12000, 3000),
> +};
> +
> +static const struct property_entry usb_connector_props[] = {
> +       PROPERTY_ENTRY_STRING("name", "connector"),
> +       PROPERTY_ENTRY_STRING("data-role", "dual"),
> +       PROPERTY_ENTRY_STRING("power-role", "dual"),
> +       PROPERTY_ENTRY_STRING("try-power-role", "sink"),
> +       PROPERTY_ENTRY_U32_ARRAY("source-pdos", src_pdo),
> +       PROPERTY_ENTRY_U32_ARRAY("sink-pdos", snk_pdo),
> +       PROPERTY_ENTRY_U32("op-sink-microwatt", 36000000),
>         { }
>  };
>
> @@ -149,6 +171,15 @@ static int cht_int33fe_add_nodes(struct cht_int33fe_data *data)
>                 data->node[i] = fwnode;
>         }
>
> +       /* Node for the USB connector (FUSB302 is the parent) */
> +       fwnode = fwnode_create_software_node(usb_connector_props,
> +                                            data->node[INT33FE_NODE_FUSB302]);
> +       if (IS_ERR(fwnode)) {
> +               ret = PTR_ERR(fwnode);
> +               goto err_remove_nodes;
> +       }
> +       data->node[INT33FE_NODE_USB_CONNECTOR] = fwnode;
> +
>         return 0;
>
>  err_remove_nodes:
> --
> 2.20.1
>


-- 
With Best Regards,
Andy Shevchenko