LXR linux/drivers/firmware/qcom

   1/* Copyright (c) 2010,2015, The Linux Foundation. All rights reserved.
   2 * Copyright (C) 2015 Linaro Ltd.
   3 *
   4 * This program is free software; you can redistribute it and/or modify
   5 * it under the terms of the GNU General Public License version 2 and
   6 * only version 2 as published by the Free Software Foundation.
   7 *
   8 * This program is distributed in the hope that it will be useful,
   9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 * GNU General Public License for more details.
  12 *
  13 * You should have received a copy of the GNU General Public License
  14 * along with this program; if not, write to the Free Software
  15 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  16 * 02110-1301, USA.
  17 */
  18
  19#include <linux/cpumask.h>
  20#include <linux/export.h>
  21#include <linux/types.h>
  22#include <linux/qcom_scm.h>
  23
  24#include "qcom_scm.h"
  25
  26/**
  27 * qcom_scm_set_cold_boot_addr() - Set the cold boot address for cpus
  28 * @entry: Entry point function for the cpus
  29 * @cpus: The cpumask of cpus that will use the entry point
  30 *
  31 * Set the cold boot address of the cpus. Any cpu outside the supported
  32 * range would be removed from the cpu present mask.
  33 */
  34int qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus)
  35{
  36        return __qcom_scm_set_cold_boot_addr(entry, cpus);
  37}
  38EXPORT_SYMBOL(qcom_scm_set_cold_boot_addr);
  39
  40/**
  41 * qcom_scm_set_warm_boot_addr() - Set the warm boot address for cpus
  42 * @entry: Entry point function for the cpus
  43 * @cpus: The cpumask of cpus that will use the entry point
  44 *
  45 * Set the Linux entry point for the SCM to transfer control to when coming
  46 * out of a power down. CPU power down may be executed on cpuidle or hotplug.
  47 */
  48int qcom_scm_set_warm_boot_addr(void *entry, const cpumask_t *cpus)
  49{
  50        return __qcom_scm_set_warm_boot_addr(entry, cpus);
  51}
  52EXPORT_SYMBOL(qcom_scm_set_warm_boot_addr);
  53
  54/**
  55 * qcom_scm_cpu_power_down() - Power down the cpu
  56 * @flags - Flags to flush cache
  57 *
  58 * This is an end point to power down cpu. If there was a pending interrupt,
  59 * the control would return from this function, otherwise, the cpu jumps to the
  60 * warm boot entry point set for this cpu upon reset.
  61 */
  62void qcom_scm_cpu_power_down(u32 flags)
  63{
  64        __qcom_scm_cpu_power_down(flags);
  65}
  66EXPORT_SYMBOL(qcom_scm_cpu_power_down);
  67
  68/**
  69 * qcom_scm_hdcp_available() - Check if secure environment supports HDCP.
  70 *
  71 * Return true if HDCP is supported, false if not.
  72 */
  73bool qcom_scm_hdcp_available(void)
  74{
  75        int ret;
  76
  77        ret = __qcom_scm_is_call_available(QCOM_SCM_SVC_HDCP,
  78                QCOM_SCM_CMD_HDCP);
  79
  80        return (ret > 0) ? true : false;
  81}
  82EXPORT_SYMBOL(qcom_scm_hdcp_available);
  83
  84/**
  85 * qcom_scm_hdcp_req() - Send HDCP request.
  86 * @req: HDCP request array
  87 * @req_cnt: HDCP request array count
  88 * @resp: response buffer passed to SCM
  89 *
  90 * Write HDCP register(s) through SCM.
  91 */
  92int qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt, u32 *resp)
  93{
  94        return __qcom_scm_hdcp_req(req, req_cnt, resp);
  95}
  96EXPORT_SYMBOL(qcom_scm_hdcp_req);
  97