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Commit b9470e02 authored by qctecmdr Service's avatar qctecmdr Service Committed by Gerrit - the friendly Code Review server
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Merge "rpmsg: Add snapshot of RPMSG Glink drivers"

parents 8a84e4b9 d064080d

drivers/rpmsg/Kconfig

+22 −0
Original line number Diff line number Diff line
@@ -39,6 +39,28 @@ config RPMSG_QCOM_GLINK_SMEM 
	  which provides support for using the GLINK communication protocol

	  over SMEM.



config RPMSG_QCOM_GLINK_SPSS

	tristate "QTI SPSS Glink driver"

	select RPMSG_QCOM_GLINK_NATIVE

	depends on MAILBOX

	depends on QCOM_SMEM

	select QSEE_IPC_IRQ

	help

	  Say y here to enable support for the GLINK SPSS communication driver,

	  which provides support for using the GLINK communication protocol

	  over SMEM. This protocol maps the smem and then shares the mapped

	  region with the remote proc by writing the smem descriptor location

	  and size into shared registers.



config RPMSG_QCOM_GLINK_SPI

	tristate "QTI SPI Glink driver"

	help

	  Say y here to enable support for the GLINK SPI communication driver,

	  which provides support for using the GLINK communication protocol

	  over SPI. This transport performs marshaling of GLINK commands and

	  data to the appropriate SPI bus wire format and allows for GLINK

	  communication with remote subsystems that are external to the SoC.



config RPMSG_QCOM_SMD

	tristate "Qualcomm Shared Memory Driver (SMD)"

	depends on MAILBOX

drivers/rpmsg/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -4,5 +4,7 @@ obj-$(CONFIG_RPMSG_CHAR) += rpmsg_char.o 
obj-$(CONFIG_RPMSG_QCOM_GLINK_RPM) += qcom_glink_rpm.o

obj-$(CONFIG_RPMSG_QCOM_GLINK_NATIVE) += qcom_glink_native.o

obj-$(CONFIG_RPMSG_QCOM_GLINK_SMEM) += qcom_glink_smem.o

obj-$(CONFIG_RPMSG_QCOM_GLINK_SPSS) += qcom_glink_spss.o

obj-$(CONFIG_RPMSG_QCOM_GLINK_SPI) += qcom_glink_spi.o

obj-$(CONFIG_RPMSG_QCOM_SMD)	+= qcom_smd.o

obj-$(CONFIG_RPMSG_VIRTIO)	+= virtio_rpmsg_bus.o

drivers/rpmsg/qcom_glink_native.c

+375 −47

File changed.

Preview size limit exceeded, changes collapsed.

drivers/rpmsg/qcom_glink_native.h

+2 −0
Original line number Diff line number Diff line
@@ -22,6 +22,8 @@ struct qcom_glink_pipe { 
	void (*write)(struct qcom_glink_pipe *glink_pipe,

		      const void *hdr, size_t hlen,

		      const void *data, size_t dlen);



	void (*reset)(struct qcom_glink_pipe *glink_pipe);

};



struct qcom_glink;

drivers/rpmsg/qcom_glink_smem.c

+4 −5
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

/*

 * Copyright (c) 2016, Linaro Ltd

 * Copyright (c) 2018, The Linux Foundation, All rights reserved.

 */



#include <linux/io.h>
@@ -90,13 +91,11 @@ static void glink_smem_rx_peak(struct qcom_glink_pipe *np, 


	len = min_t(size_t, count, pipe->native.length - tail);

	if (len) {

		__ioread32_copy(data, pipe->fifo + tail,

				len / sizeof(u32));

		memcpy_fromio(data, pipe->fifo + tail, len);

	}



	if (len != count) {

		__ioread32_copy(data + len, pipe->fifo,

				(count - len) / sizeof(u32));

		memcpy_fromio(data + len, pipe->fifo, (count - len));

	}

}
@@ -109,7 +108,7 @@ static void glink_smem_rx_advance(struct qcom_glink_pipe *np, 
	tail = le32_to_cpu(*pipe->tail);



	tail += count;

	if (tail > pipe->native.length)

	if (tail >= pipe->native.length)

		tail -= pipe->native.length;



	*pipe->tail = cpu_to_le32(tail);