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Commit d680a245 authored by Arun Kumar Neelakantam's avatar Arun Kumar Neelakantam
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soc: qcom: msm_smd: Add snapshot of Shared memory driver 



This is a snapshot of the SMD driver as of msm-4.4 commit
<bb3bb010ec74> (Merge "ASoC: wcd9xxx: restrict debugfs permission")

Shared memory data[SMD] drivers provides data communication to
remote peripherals such as Modem and ADSP over shared memory.

CRs-Fixed: 2144497
Change-Id: I50ded677a10dae3910b8369e6c17f175dda3edf5
Signed-off-by: default avatarArun Kumar Neelakantam <aneela@codeaurora.org>
parent 51115737

Documentation/devicetree/bindings/arm/msm/smdpkt.txt

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Qualcomm Technologies, Inc Shared Memory Packet Driver (smdpkt)



[Root level node]

Required properties:

-compatible : should be "qcom,smdpkt"



[Second level nodes]

qcom,smdpkt-port-names

Required properties:

-qcom,smdpkt-remote : the remote subsystem name

-qcom,smdpkt-port-name : the smd channel name

-qcom,smdpkt-dev-name : the smdpkt device name



Example:



	qcom,smdpkt {

		compatible = "qcom,smdpkt";



		qcom,smdpkt-data5-cntl {

			qcom,smdpkt-remote = "modem";

			qcom,smdpkt-port-name = "DATA5_CNTL";

			qcom,smdpkt-dev-name = "smdcntl0";

		};



		qcom,smdpkt-data6-cntl {

			qcom,smdpkt-remote = "modem";

			qcom,smdpkt-port-name = "DATA6_CNTL";

			qcom,smdpkt-dev-name = "smdcntl1";

		};



		qcom,smdpkt-cxm-qmi-port-8064 {

			qcom,smdpkt-remote = "wcnss";

			qcom,smdpkt-port-name = "CXM_QMI_PORT_8064";

			qcom,smdpkt-dev-name = "smd_cxm_qmi";

		};



		qcom,smdpkt-loopback {

			qcom,smdpkt-remote = "modem";

			qcom,smdpkt-port-name = "LOOPBACK";

			qcom,smdpkt-dev-name = "smd_pkt_loopback";

		};

	};

Documentation/devicetree/bindings/arm/msm/smdtty.txt

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Qualcomm Technologies, Inc Shared Memory TTY Driver (smdtty)



[Root level node]

Required properties:

-compatible : should be "qcom,smdtty"



[Second level nodes]

qcom,smdtty-port-names

Required properties:

-qcom,smdtty-remote: the remote subsystem name

-qcom,smdtty-port-name : the smd channel name



Optional properties:

-qcom,smdtty-dev-name : the smdtty device name



Required alias:

- The index into TTY subsystem is specified via an alias with the following format

         'smd{n}' where n is the tty device index.



Example:

	aliases {

		smd1 = &smdtty_apps_fm;

		smd36 = &smdtty_loopback;

	};



	qcom,smdtty {

		compatible = "qcom,smdtty";



		smdtty_apps_fm: qcom,smdtty-apps-fm {

			qcom,smdtty-remote = "wcnss";

			qcom,smdtty-port-name = "APPS_FM";

		};



		smdtty_loopback: smdtty-loopback {

			qcom,smdtty-remote = "modem";

			qcom,smdtty-port-name = "LOOPBACK";

			qcom,smdtty-dev-name = "LOOPBACK_TTY";

		};

	};

drivers/char/Kconfig

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@@ -582,6 +582,16 @@ config DEVPORT 


source "drivers/s390/char/Kconfig"



config MSM_SMD_PKT

	bool "Enable device interface for some SMD packet ports"

	default n

	depends on MSM_SMD

	help

	  smd_pkt driver provides the interface for the userspace clients

	  to communicate over smd via device nodes. This enable the

	  usersapce clients to read and write to some smd packets channel

	  for MSM chipset.



config TILE_SROM

	bool "Character-device access via hypervisor to the Tilera SPI ROM"

	depends on TILE

drivers/char/Makefile

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Original line number Diff line number Diff line
@@ -9,6 +9,7 @@ obj-$(CONFIG_ATARI_DSP56K) += dsp56k.o 
obj-$(CONFIG_VIRTIO_CONSOLE)	+= virtio_console.o

obj-$(CONFIG_RAW_DRIVER)	+= raw.o

obj-$(CONFIG_SGI_SNSC)		+= snsc.o snsc_event.o

obj-$(CONFIG_MSM_SMD_PKT)	+= msm_smd_pkt.o

obj-$(CONFIG_MSPEC)		+= mspec.o

obj-$(CONFIG_MMTIMER)		+= mmtimer.o

obj-$(CONFIG_UV_MMTIMER)	+= uv_mmtimer.o