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Commit 930c2eb3 authored by Ping Jiang's avatar Ping Jiang Committed by Gerrit - the friendly Code Review server
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spmi: pmic_arb: Add snapshot of virto spmi driver 



This snapshot is taken as of msm-4.14
commit b9f2c2a80f8b
("spmi: pmic_arb: add interrupt support to virtio spmi").

Change-Id: I79eaa03591dbd3c32db2175045f6033b38a9c8ea
Signed-off-by: default avatarPing Jiang <scottjiang@codeaurora.org>
parent f1a388a8

drivers/spmi/Kconfig

+13 −0
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@@ -45,4 +45,17 @@ config SPMI_QTI_GLINK_DEBUG 
	  PMIC peripherals that would typically only be accessible to the

	  charger and fuel gauging firmware running on the remote subsystem.



config VIOSPMI_MSM_PMIC_ARB

	tristate "QTI Virtio SPMI Controller (Virtio PMIC Arbiter)"

	select IRQ_DOMAIN

	depends on ARCH_QCOM || COMPILE_TEST

	depends on HAS_IOMEM

	depends on VIRTIO

	help

	  If you say yes to this option, support will be included for the

	  built-in SPMI PMIC Arbiter interface on MSM virtual platform.



	  This is required for communicating with PMICs and

	  other devices that have the SPMI interface.



endif

drivers/spmi/Makefile

+1 −0
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@@ -7,3 +7,4 @@ obj-$(CONFIG_SPMI) += spmi.o 
obj-$(CONFIG_SPMI_MSM_PMIC_ARB)	+= spmi-pmic-arb.o

obj-$(CONFIG_SPMI_MSM_PMIC_ARB_DEBUG)	+= spmi-pmic-arb-debug.o

obj-$(CONFIG_SPMI_QTI_GLINK_DEBUG)	+= spmi-glink-debug.o

obj-$(CONFIG_VIOSPMI_MSM_PMIC_ARB)	+= viospmi-pmic-arb.o

drivers/spmi/viospmi-pmic-arb.c

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+881 −0

File added.

Preview size limit exceeded, changes collapsed.

include/linux/virtio_spmi.h

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/* SPDX-License-Identifier: GPL-2.0-only */

/* Copyright (c) 2019-2021, The Linux Foundation. All rights reserved. */



#ifndef _LINUX_VIRTIO_SPMI_H

#define _LINUX_VIRTIO_SPMI_H



#include <linux/types.h>

#include <linux/virtio_ids.h>

#include <linux/virtio_config.h>

#include <linux/virtio_types.h>



/* Feature bits */

#define VIRTIO_SPMI_F_INT	1	/* Support interrupt */



#define VM_MAX_PERIPHS 512



/* Configuration layout */

struct virtio_spmi_config {

	__u16 ppid_allowed[VM_MAX_PERIPHS];

} __packed;



struct payload_cmd {

	__virtio32 cmd;

	__virtio32 data[2];

};



struct payload_irq {

	__virtio16 ppid;

	__virtio32 regval;

};



union payload_data {

	struct payload_cmd cmdd;

	struct payload_irq irqd;

};



struct virtio_spmi_msg {

	__virtio32 type;

	__virtio32 res;

	union payload_data payload;

};



/* Virtio SPMI message type */

enum vio_spmi_msg_type {

	VIO_SPMI_BUS_WRITE = 0,

	VIO_SPMI_BUS_READ = 1,

	VIO_SPMI_BUS_CMDMAX  = 1,

	VIO_ACC_ENABLE_WR = 2,

	VIO_ACC_ENABLE_RD = 3,

	VIO_IRQ_CLEAR = 4,

	VIO_IRQ_STATUS = 5,

};



/* Virtio SPMI message type */

enum vio_spmi_msg_res {

	VIO_SPMI_DONE = 0,

	VIO_SPMI_ERR = 1,

};

#endif /* _LINUX_VIRTIO_SPMI_H */