Merge "soc: qcom: Add RPM SMD Driver" (3f7432fe) · Commits · e / devices / android_kernel_fairphone_FP4

drivers/rpmsg/Kconfig

+9 −0

Original line number	Diff line number	Diff line
		@@ -77,4 +77,13 @@ config RPMSG_VIRTIO
		select RPMSG
		select VIRTIO

		config MSM_RPM_SMD
		bool "RPM driver using SMD protocol"
		help
		RPM is the dedicated hardware engine for managing shared SoC
		resources. This config adds driver support for using SMD as a
		transport layer communication with RPM hardware. It also selects
		the MSM_MPM config that programs the MPM module to monitor interrupts
		during sleep modes.

		endmenu

drivers/rpmsg/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -3,6 +3,7 @@ obj-$(CONFIG_RPMSG) += rpmsg_core.o
		obj-$(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-$(CONFIG_MSM_RPM_SMD) += rpm-smd.o
		obj-$(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

drivers/rpmsg/rpm-smd.c

0 → 100644

+1645 −0

File added.

Preview size limit exceeded, changes collapsed.

drivers/soc/qcom/Makefile

+8 −1

Original line number	Diff line number	Diff line
		@@ -77,13 +77,20 @@ obj-$(CONFIG_QTI_SYSTEM_PM) += system_pm.o
		obj-$(CONFIG_MSM_REMOTEQDSS) += remoteqdss.o
		obj-$(CONFIG_MSM_EVENT_TIMER) += event_timer.o
		obj-$(CONFIG_MSM_IDLE_STATS) += lpm-stats.o
		ifdef CONFIG_QCOM_RPMH
		obj-$(CONFIG_QTI_RPM_STATS_LOG) += rpmh_master_stat.o
		else
		obj-$(CONFIG_QTI_RPM_STATS_LOG) += rpm_master_stat.o
		endif
		obj-$(CONFIG_QTI_RPM_STATS_LOG) += rpm_stats.o
		obj-$(CONFIG_QCOM_MEM_OFFLINE) += mem-offline.o
		obj-$(CONFIG_QTI_DDR_STATS_LOG) += ddr_stats.o
		obj-$(CONFIG_QMP_DEBUGFS_CLIENT) += qmp-debugfs-client.o
		obj-$(CONFIG_QCOM_HYP_CORE_CTL) += hyp_core_ctl.o
		obj-$(CONFIG_MSM_PERFORMANCE) += msm_performance.o
		ifdef CONFIG_DEBUG_FS
		obj-$(CONFIG_MSM_RPM_SMD) += rpm-smd-debug.o
		endif
		obj-$(CONFIG_QCOM_CDSP_RM) += cdsprm.o
		obj-$(CONFIG_ICNSS) += icnss.o
		obj-$(CONFIG_ICNSS_QMI) += icnss_qmi.o wlan_firmware_service_v01.o

drivers/soc/qcom/rpm-smd-debug.c

0 → 100644

+144 −0

Original line number	Diff line number	Diff line
		// SPDX-License-Identifier: GPL-2.0-only
		/*
		* Copyright (c) 2013-2019, The Linux Foundation. All rights reserved.
		*/

		#define pr_fmt(fmt) "rpm-smd-debug: %s(): " fmt, __func__

		#include <linux/kernel.h>
		#include <linux/init.h>
		#include <linux/module.h>
		#include <linux/debugfs.h>
		#include <linux/list.h>
		#include <linux/io.h>
		#include <linux/uaccess.h>
		#include <linux/slab.h>
		#include <soc/qcom/rpm-smd.h>

		#define MAX_MSG_BUFFER 350
		#define MAX_KEY_VALUE_PAIRS 20

		static struct dentry *rpm_debugfs_dir;

		static u32 string_to_uint(const u8 *str)
		{
		int i, len;
		u32 output = 0;

		len = strnlen(str, sizeof(u32));
		for (i = 0; i < len; i++)
		output \|= str[i] << (i * 8);

		return output;
		}

		static ssize_t rsc_ops_write(struct file fp, const char __user user_buffer,
		size_t count, loff_t *position)
		{
		char buf[MAX_MSG_BUFFER], rsc_type_str[6] = {}, rpm_set[8] = {},
		key_str[6] = {};
		int i, pos = -1, set = -1, nelems = -1;
		char *cmp;
		uint32_t rsc_type = 0, rsc_id = 0, key = 0, data = 0;
		struct msm_rpm_request *req;

		count = min(count, sizeof(buf) - 1);
		if (copy_from_user(&buf, user_buffer, count))
		return -EFAULT;
		buf[count] = '\0';
		cmp = strstrip(buf);

		if (sscanf(cmp, "%7s %5s %u %d %n", rpm_set, rsc_type_str,
		&rsc_id, &nelems, &pos) != 4) {
		pr_err("Invalid number of arguments passed\n");
		goto err;
		}

		if (strlen(rpm_set) > 6 \|\| strlen(rsc_type_str) > 4) {
		pr_err("Invalid value of set or resource type\n");
		goto err;
		}

		if (!strcmp(rpm_set, "active"))
		set = 0;
		else if (!strcmp(rpm_set, "sleep"))
		set = 1;

		rsc_type = string_to_uint(rsc_type_str);

		if (set < 0 \|\| nelems < 0) {
		pr_err("Invalid value of set or nelems\n");
		goto err;
		}
		if (nelems > MAX_KEY_VALUE_PAIRS) {
		pr_err("Exceeded max no of key-value entries\n");
		goto err;
		}

		req = msm_rpm_create_request(set, rsc_type, rsc_id, nelems);
		if (!req)
		return -ENOMEM;

		for (i = 0; i < nelems; i++) {
		cmp += pos;
		if (sscanf(cmp, "%5s %n", key_str, &pos) != 1) {
		pr_err("Invalid number of arguments passed\n");
		goto err_request;
		}

		if (strlen(key_str) > 4) {
		pr_err("Key value cannot be more than 4 charecters\n");
		goto err_request;
		}
		key = string_to_uint(key_str);
		if (!key) {
		pr_err("Key values entered incorrectly\n");
		goto err_request;
		}

		cmp += pos;
		if (sscanf(cmp, "%u %n", &data, &pos) != 1) {
		pr_err("Invalid number of arguments passed\n");
		goto err_request;
		}

		if (msm_rpm_add_kvp_data(req, key,
		(void *)&data, sizeof(data)))
		goto err_request;
		}

		if (msm_rpm_wait_for_ack(msm_rpm_send_request(req)))
		pr_err("Sending the RPM message failed\n");

		err_request:
		msm_rpm_free_request(req);
		err:
		return count;
		}

		static const struct file_operations rsc_ops = {
		.write = rsc_ops_write,
		};

		static int __init rpm_smd_debugfs_init(void)
		{
		rpm_debugfs_dir = debugfs_create_dir("rpm_send_msg", NULL);
		if (!rpm_debugfs_dir)
		return -ENOMEM;

		if (!debugfs_create_file("message", 0200, rpm_debugfs_dir, NULL,
		&rsc_ops))
		return -ENOMEM;

		return 0;
		}
		late_initcall(rpm_smd_debugfs_init);

		static void __exit rpm_smd_debugfs_exit(void)
		{
		debugfs_remove_recursive(rpm_debugfs_dir);
		}
		module_exit(rpm_smd_debugfs_exit);

		MODULE_DESCRIPTION("RPM SMD Debug Driver");
		MODULE_LICENSE("GPL v2");