On Thu, Aug 17, 2023 at 06:08:24PM +0300, Dmitry Baryshkov wrote:
> The current approach to handling DP on bridge-enabled platforms requires
> a chain of DP bridges up to the USB-C connector. Register a last DRM
> bridge for such chain.
>
> Acked-by: Bryan O'Donoghue <bryan.odonoghue@xxxxxxxxxx>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
> ---
> drivers/usb/typec/tcpm/Kconfig | 1 +
> drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c | 37 +++++++++++++++++++
> 2 files changed, 38 insertions(+)
>
> diff --git a/drivers/usb/typec/tcpm/Kconfig b/drivers/usb/typec/tcpm/Kconfig
> index 5d393f520fc2..0b2993fef564 100644
> --- a/drivers/usb/typec/tcpm/Kconfig
> +++ b/drivers/usb/typec/tcpm/Kconfig
> @@ -79,6 +79,7 @@ config TYPEC_WCOVE
> config TYPEC_QCOM_PMIC
> tristate "Qualcomm PMIC USB Type-C Port Controller Manager driver"
> depends on ARCH_QCOM || COMPILE_TEST
> + depends on DRM || DRM=n
> help
> A Type-C port and Power Delivery driver which aggregates two
> discrete pieces of silicon in the PM8150b PMIC block: the
Would it be an option to put the below in separate c file that you
just compile based on CONFIG_DRM?
obj-$(CONFIG_TYPEC_QCOM_PMIC) += qcom_pmic_tcpm.o
qcom_pmic_tcpm-y += qcom_pmic_typec.o \
qcom_pmic_typec_port.o \
qcom_pmic_typec_pdphy.o
ifneq ($(CONFIG_DRM),)
qcom_pmic_tcpm-y += qcom_pmic_bridge_func.o
endif
Thouse ifdefs in c file just look a bit rough to me.
> diff --git a/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c
> index af44ee4e6e86..581199d37b49 100644
> --- a/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c
> +++ b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c
> @@ -17,6 +17,9 @@
> #include <linux/usb/role.h>
> #include <linux/usb/tcpm.h>
> #include <linux/usb/typec_mux.h>
> +
> +#include <drm/drm_bridge.h>
> +
> #include "qcom_pmic_typec_pdphy.h"
> #include "qcom_pmic_typec_port.h"
>
> @@ -33,6 +36,7 @@ struct pmic_typec {
> struct pmic_typec_port *pmic_typec_port;
> bool vbus_enabled;
> struct mutex lock; /* VBUS state serialization */
> + struct drm_bridge bridge;
> };
>
> #define tcpc_to_tcpm(_tcpc_) container_of(_tcpc_, struct pmic_typec, tcpc)
> @@ -146,6 +150,35 @@ static int qcom_pmic_typec_init(struct tcpc_dev *tcpc)
> return 0;
> }
>
> +#if IS_ENABLED(CONFIG_DRM)
> +static int qcom_pmic_typec_attach(struct drm_bridge *bridge,
> + enum drm_bridge_attach_flags flags)
> +{
> + return flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR ? 0 : -EINVAL;
> +}
> +
> +static const struct drm_bridge_funcs qcom_pmic_typec_bridge_funcs = {
> + .attach = qcom_pmic_typec_attach,
> +};
> +
> +static int qcom_pmic_typec_init_drm(struct pmic_typec *tcpm)
> +{
> + tcpm->bridge.funcs = &qcom_pmic_typec_bridge_funcs;
> +#ifdef CONFIG_OF
> + tcpm->bridge.of_node = of_get_child_by_name(tcpm->dev->of_node, "connector");
> +#endif
> + tcpm->bridge.ops = DRM_BRIDGE_OP_HPD;
> + tcpm->bridge.type = DRM_MODE_CONNECTOR_DisplayPort;
> +
> + return devm_drm_bridge_add(tcpm->dev, &tcpm->bridge);
> +}
> +#else
> +static int qcom_pmic_typec_init_drm(struct pmic_typec *tcpm)
> +{
> + return 0;
> +}
> +#endif
> +
> static int qcom_pmic_typec_probe(struct platform_device *pdev)
> {
> struct pmic_typec *tcpm;
> @@ -208,6 +241,10 @@ static int qcom_pmic_typec_probe(struct platform_device *pdev)
> mutex_init(&tcpm->lock);
> platform_set_drvdata(pdev, tcpm);
>
> + ret = qcom_pmic_typec_init_drm(tcpm);
> + if (ret)
> + return ret;
> +
> tcpm->tcpc.fwnode = device_get_named_child_node(tcpm->dev, "connector");
> if (!tcpm->tcpc.fwnode)
> return -EINVAL;
thanks,
--
heikki
