From mboxrd@z Thu Jan 1 00:00:00 1970 From: aisheng.dong@nxp.com (Dong Aisheng) Date: Tue, 21 Aug 2018 00:08:24 +0800 Subject: [PATCH V5 4/5] soc: imx: sc: add pad svc support In-Reply-To: <1534781305-4770-1-git-send-email-aisheng.dong@nxp.com> References: <1534781305-4770-1-git-send-email-aisheng.dong@nxp.com> Message-ID: <1534781305-4770-5-git-send-email-aisheng.dong@nxp.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Add SCU PAD SVC support which provides pad get/set functions. Cc: Shawn Guo Cc: Sascha Hauer Signed-off-by: Dong Aisheng --- drivers/soc/imx/sc/Makefile | 1 + drivers/soc/imx/sc/svc/pad/rpc_clnt.c | 82 +++++++++++++++++++++++++++++++++++ include/soc/imx/sc/sci.h | 1 + include/soc/imx/sc/svc/pad/api.h | 60 +++++++++++++++++++++++++ 4 files changed, 144 insertions(+) create mode 100644 drivers/soc/imx/sc/svc/pad/rpc_clnt.c create mode 100644 include/soc/imx/sc/svc/pad/api.h diff --git a/drivers/soc/imx/sc/Makefile b/drivers/soc/imx/sc/Makefile index 6898815..3a709b2 100644 --- a/drivers/soc/imx/sc/Makefile +++ b/drivers/soc/imx/sc/Makefile @@ -1,3 +1,4 @@ # SPDX-License-Identifier: GPL-2.0 obj-y += main/ipc.o +obj-y += svc/pad/rpc_clnt.o obj-y += svc/pm/rpc_clnt.o diff --git a/drivers/soc/imx/sc/svc/pad/rpc_clnt.c b/drivers/soc/imx/sc/svc/pad/rpc_clnt.c new file mode 100644 index 0000000..f300aef --- /dev/null +++ b/drivers/soc/imx/sc/svc/pad/rpc_clnt.c @@ -0,0 +1,82 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2016 Freescale Semiconductor, Inc. + * Copyright 2017~2018 NXP + * + * File containing client-side RPC functions for the PAD service. These + * function are ported to clients that communicate to the SC. + * + */ + +#include +#include "../../main/rpc.h" + +/* + * This type is used to indicate RPC PAD function calls. + */ +enum pad_func_e { + PAD_FUNC_SET = 15, + PAD_FUNC_GET = 16, +}; + +struct imx_sc_msg_req_pad_set { + struct sc_rpc_msg hdr; + u32 val; + u16 pad; +} __packed; + +struct imx_sc_msg_req_pad_get { + struct sc_rpc_msg hdr; + u16 pad; +} __packed; + +struct imx_sc_msg_resp_pad_get { + struct sc_rpc_msg hdr; + u32 val; +} __packed; + +sc_err_t sc_pad_set(sc_ipc_t ipc, sc_pad_t pad, uint32_t val) +{ + struct imx_sc_msg_req_pad_set msg; + struct sc_rpc_msg *hdr = &msg.hdr; + int ret; + + hdr->ver = SC_RPC_VERSION; + hdr->svc = (uint8_t)SC_RPC_SVC_PAD; + hdr->func = (uint8_t)PAD_FUNC_SET; + hdr->size = 3; + + msg.val = val; + msg.pad = pad; + + ret = sc_call_rpc(ipc, (void *)&msg, false); + if (ret) + return SC_ERR_FAIL; + + return (sc_err_t)hdr->func; +} + +sc_err_t sc_pad_get(sc_ipc_t ipc, sc_pad_t pad, uint32_t *val) +{ + struct imx_sc_msg_req_pad_get msg; + struct imx_sc_msg_resp_pad_get *resp; + struct sc_rpc_msg *hdr = &msg.hdr; + int ret; + + hdr->ver = SC_RPC_VERSION; + hdr->svc = (uint8_t)SC_RPC_SVC_PAD; + hdr->func = (uint8_t)PAD_FUNC_GET; + hdr->size = 2; + + msg.pad = pad; + + ret = sc_call_rpc(ipc, (void *)&msg, false); + if (ret) + return SC_ERR_FAIL; + + resp = (struct imx_sc_msg_resp_pad_get *)&msg; + if (val != NULL) + *val = resp->val; + + return (sc_err_t)resp->hdr.func; +} diff --git a/include/soc/imx/sc/sci.h b/include/soc/imx/sc/sci.h index b7248cf..2407890 100644 --- a/include/soc/imx/sc/sci.h +++ b/include/soc/imx/sc/sci.h @@ -13,6 +13,7 @@ #include #include +#include #include #endif /* _SC_SCI_H */ diff --git a/include/soc/imx/sc/svc/pad/api.h b/include/soc/imx/sc/svc/pad/api.h new file mode 100644 index 0000000..d7d80b6 --- /dev/null +++ b/include/soc/imx/sc/svc/pad/api.h @@ -0,0 +1,60 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (C) 2016 Freescale Semiconductor, Inc. + * Copyright 2017~2018 NXP + * + * Header file containing the public API for the System Controller (SC) + * Pad Control (PAD) function. + * + * PAD_SVC (SVC) Pad Service + * + * Module for the Pad Control (PAD) service. + * + */ + +#ifndef _SC_PAD_API_H +#define _SC_PAD_API_H + +#include +#include + +/* + * This type is used to indicate a pad. Valid values are SoC specific. + * + * Refer to the SoC [Pad List](@ref PADS) for valid pad values. + */ +typedef uint16_t sc_pad_t; + +/* + * This function configures the settings for a pad. This setting is SoC + * specific. + * + * @param [in] ipc IPC handle + * @param [in] pad pad to configure + * @param [in] val value to set + * + * @return Returns an error code (SC_ERR_NONE = success). + * + * Return errors: + * - SC_PARM if arguments out of range or invalid, + * - SC_ERR_NOACCESS if caller's partition is not the pad owner + */ +sc_err_t sc_pad_set(sc_ipc_t ipc, sc_pad_t pad, uint32_t val); + +/* + * This function gets the settings for a pad. This setting is SoC + * specific. + * + * @param [in] ipc IPC handle + * @param [in] pad pad to query + * @param [out] val pointer to return setting + * + * @return Returns an error code (SC_ERR_NONE = success). + * + * Return errors: + * - SC_PARM if arguments out of range or invalid, + * - SC_ERR_NOACCESS if caller's partition is not the pad owner + */ +sc_err_t sc_pad_get(sc_ipc_t ipc, sc_pad_t pad, uint32_t *val); + +#endif /* _SC_PAD_API_H */ -- 2.7.4