firmware: imx: add misc svc support
Add SCU MISC SVC support which provides misc control get/set functions. Cc: Shawn Guo <shawnguo@kernel.org> Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>hifive-unleashed-5.1
Dong Aisheng
Shawn Guo
parent
edbee095fa
commit
15e1f2bc8b
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@ -1,2 +1,2 @@
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# SPDX-License-Identifier: GPL-2.0
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obj-$(CONFIG_IMX_SCU) += imx-scu.o
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obj-$(CONFIG_IMX_SCU) += imx-scu.o misc.o
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@ -0,0 +1,99 @@
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2016 Freescale Semiconductor, Inc.
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* Copyright 2017~2018 NXP
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* Author: Dong Aisheng <aisheng.dong@nxp.com>
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*
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* File containing client-side RPC functions for the MISC service. These
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* function are ported to clients that communicate to the SC.
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*
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*/
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#include <linux/firmware/imx/svc/misc.h>
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struct imx_sc_msg_req_misc_set_ctrl {
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struct imx_sc_rpc_msg hdr;
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u32 ctrl;
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u32 val;
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u16 resource;
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} __packed;
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struct imx_sc_msg_req_misc_get_ctrl {
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struct imx_sc_rpc_msg hdr;
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u32 ctrl;
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u16 resource;
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} __packed;
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struct imx_sc_msg_resp_misc_get_ctrl {
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struct imx_sc_rpc_msg hdr;
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u32 val;
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} __packed;
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/*
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* This function sets a miscellaneous control value.
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*
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* @param[in] ipc IPC handle
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* @param[in] resource resource the control is associated with
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* @param[in] ctrl control to change
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* @param[in] val value to apply to the control
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*
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* @return Returns 0 for success and < 0 for errors.
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*/
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int imx_sc_misc_set_control(struct imx_sc_ipc *ipc, u32 resource,
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u8 ctrl, u32 val)
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{
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struct imx_sc_msg_req_misc_set_ctrl msg;
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struct imx_sc_rpc_msg *hdr = &msg.hdr;
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hdr->ver = IMX_SC_RPC_VERSION;
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hdr->svc = (uint8_t)IMX_SC_RPC_SVC_MISC;
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hdr->func = (uint8_t)IMX_SC_MISC_FUNC_SET_CONTROL;
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hdr->size = 4;
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msg.ctrl = ctrl;
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msg.val = val;
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msg.resource = resource;
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return imx_scu_call_rpc(ipc, &msg, true);
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}
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EXPORT_SYMBOL(imx_sc_misc_set_control);
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/*
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* This function gets a miscellaneous control value.
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*
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* @param[in] ipc IPC handle
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* @param[in] resource resource the control is associated with
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* @param[in] ctrl control to get
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* @param[out] val pointer to return the control value
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*
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* @return Returns 0 for success and < 0 for errors.
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*/
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int imx_sc_misc_get_control(struct imx_sc_ipc *ipc, u32 resource,
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u8 ctrl, u32 *val)
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{
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struct imx_sc_msg_req_misc_get_ctrl msg;
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struct imx_sc_msg_resp_misc_get_ctrl *resp;
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struct imx_sc_rpc_msg *hdr = &msg.hdr;
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int ret;
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hdr->ver = IMX_SC_RPC_VERSION;
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hdr->svc = (uint8_t)IMX_SC_RPC_SVC_MISC;
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hdr->func = (uint8_t)IMX_SC_MISC_FUNC_GET_CONTROL;
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hdr->size = 3;
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msg.ctrl = ctrl;
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msg.resource = resource;
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ret = imx_scu_call_rpc(ipc, &msg, true);
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if (ret)
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return ret;
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resp = (struct imx_sc_msg_resp_misc_get_ctrl *)&msg;
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if (val != NULL)
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*val = resp->val;
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return 0;
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}
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EXPORT_SYMBOL(imx_sc_misc_get_control);
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@ -13,4 +13,5 @@
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#include <linux/firmware/imx/ipc.h>
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#include <linux/firmware/imx/types.h>
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#include <linux/firmware/imx/svc/misc.h>
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#endif /* _SC_SCI_H */
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@ -0,0 +1,55 @@
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/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (C) 2016 Freescale Semiconductor, Inc.
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* Copyright 2017~2018 NXP
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*
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* Header file containing the public API for the System Controller (SC)
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* Miscellaneous (MISC) function.
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*
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* MISC_SVC (SVC) Miscellaneous Service
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*
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* Module for the Miscellaneous (MISC) service.
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*/
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#ifndef _SC_MISC_API_H
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#define _SC_MISC_API_H
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#include <linux/firmware/imx/sci.h>
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/*
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* This type is used to indicate RPC MISC function calls.
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*/
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enum imx_misc_func {
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IMX_SC_MISC_FUNC_UNKNOWN = 0,
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IMX_SC_MISC_FUNC_SET_CONTROL = 1,
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IMX_SC_MISC_FUNC_GET_CONTROL = 2,
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IMX_SC_MISC_FUNC_SET_MAX_DMA_GROUP = 4,
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IMX_SC_MISC_FUNC_SET_DMA_GROUP = 5,
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IMX_SC_MISC_FUNC_SECO_IMAGE_LOAD = 8,
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IMX_SC_MISC_FUNC_SECO_AUTHENTICATE = 9,
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IMX_SC_MISC_FUNC_DEBUG_OUT = 10,
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IMX_SC_MISC_FUNC_WAVEFORM_CAPTURE = 6,
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IMX_SC_MISC_FUNC_BUILD_INFO = 15,
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IMX_SC_MISC_FUNC_UNIQUE_ID = 19,
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IMX_SC_MISC_FUNC_SET_ARI = 3,
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IMX_SC_MISC_FUNC_BOOT_STATUS = 7,
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IMX_SC_MISC_FUNC_BOOT_DONE = 14,
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IMX_SC_MISC_FUNC_OTP_FUSE_READ = 11,
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IMX_SC_MISC_FUNC_OTP_FUSE_WRITE = 17,
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IMX_SC_MISC_FUNC_SET_TEMP = 12,
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IMX_SC_MISC_FUNC_GET_TEMP = 13,
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IMX_SC_MISC_FUNC_GET_BOOT_DEV = 16,
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IMX_SC_MISC_FUNC_GET_BUTTON_STATUS = 18,
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};
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/*
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* Control Functions
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*/
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int imx_sc_misc_set_control(struct imx_sc_ipc *ipc, u32 resource,
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u8 ctrl, u32 val);
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int imx_sc_misc_get_control(struct imx_sc_ipc *ipc, u32 resource,
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u8 ctrl, u32 *val);
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#endif /* _SC_MISC_API_H */
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