On Mon, Jul 9, 2018 at 8:51 AM Georgi Djakov <georgi.djakov@xxxxxxxxxx> wrote: > > On some Qualcomm SoCs, there is a remote processor, which controls some of > the Network-On-Chip interconnect resources. Other CPUs express their needs > by communicating with this processor. Add a driver to handle communication > with this remote processor. > > Signed-off-by: Georgi Djakov <georgi.djakov@xxxxxxxxxx> > --- > .../bindings/interconnect/qcom-smd.txt | 32 +++++++ > drivers/interconnect/qcom/Kconfig | 11 +++ > drivers/interconnect/qcom/Makefile | 2 + > drivers/interconnect/qcom/smd-rpm.c | 91 +++++++++++++++++++ > drivers/interconnect/qcom/smd-rpm.h | 15 +++ > 5 files changed, 151 insertions(+) > create mode 100644 Documentation/devicetree/bindings/interconnect/qcom-smd.txt > create mode 100644 drivers/interconnect/qcom/Kconfig > create mode 100644 drivers/interconnect/qcom/Makefile > create mode 100644 drivers/interconnect/qcom/smd-rpm.c > create mode 100644 drivers/interconnect/qcom/smd-rpm.h > > diff --git a/Documentation/devicetree/bindings/interconnect/qcom-smd.txt b/Documentation/devicetree/bindings/interconnect/qcom-smd.txt > new file mode 100644 > index 000000000000..88a5aeb50935 > --- /dev/null > +++ b/Documentation/devicetree/bindings/interconnect/qcom-smd.txt > @@ -0,0 +1,32 @@ > +Qualcomm SMD-RPM interconnect driver binding > +------------------------------------------------ > +The RPM (Resource Power Manager) is a dedicated hardware engine > +for managing the shared SoC resources in order to keep the lowest > +power profile. It communicates with other hardware subsystems via > +the shared memory driver (SMD) back-end and accepts requests for > +various resources. > + > +Required properties : > +- compatible : shall contain only one of the following: > + "qcom,interconnect-smd-rpm" > + > +Example: > + smd { > + compatible = "qcom,smd"; > + > + rpm { > + interrupts = <0 168 1>; > + qcom,ipc = <&apcs 8 0>; > + qcom,smd-edge = <15>; > + > + rpm_requests { > + compatible = "qcom,rpm-msm8916"; > + qcom,smd-channels = "rpm_requests"; > + > + interconnect-smd-rpm { > + compatible = "qcom,interconnect-smd-rpm"; > + }; > + > + }; > + }; > + }; > diff --git a/drivers/interconnect/qcom/Kconfig b/drivers/interconnect/qcom/Kconfig > new file mode 100644 > index 000000000000..b0c2ff928d88 > --- /dev/null > +++ b/drivers/interconnect/qcom/Kconfig > @@ -0,0 +1,11 @@ > +config INTERCONNECT_QCOM > + bool "Qualcomm Network-on-Chip interconnect drivers" > + depends on INTERCONNECT > + depends on ARCH_QCOM || COMPILE_TEST > + > +config INTERCONNECT_QCOM_SMD_RPM > + tristate "Qualcomm SMD RPM interconnect driver" > + depends on INTERCONNECT_QCOM Should this also depend on CONFIG_QCOM_SMD_RPM, since it uses qcom_rpm_smd_write? > + help > + This is a driver for communicating interconnect related configuration > + details with a remote processor (RPM) on Qualcomm platforms. ... > diff --git a/drivers/interconnect/qcom/smd-rpm.h b/drivers/interconnect/qcom/smd-rpm.h > new file mode 100644 > index 000000000000..c33b91a3dd51 > --- /dev/null > +++ b/drivers/interconnect/qcom/smd-rpm.h > @@ -0,0 +1,15 @@ > +/* SPDX-License-Identifier: GPL-2.0 */ > +/* > + * Copyright (c) 2018, Linaro Ltd. > + * Author: Georgi Djakov <georgi.djakov@xxxxxxxxxx> > + */ > + > +#ifndef __DRIVERS_INTERCONNECT_QCOM_RPM_H > +#define __DRIVERS_INTERCONNECT_QCOM_RPM_H Nit: this still doesn't quite match, it would need an _SMD like: __DRIVERS_INTERCONNECT_QCOM_SMD_RPM_H > + > +#include <linux/soc/qcom/smd-rpm.h> > + > +bool qcom_icc_rpm_smd_available(void); > +int qcom_icc_rpm_smd_send(int ctx, int rsc_type, int id, u32 val); > + > +#endif -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html