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1// SPDX-License-Identifier: GPL-2.0+2/*3 * Copyright (C) 2016 Freescale Semiconductor, Inc.4 * Copyright 2017-2018 NXP5 * Dong Aisheng <aisheng.dong@nxp.com>6 */7 8#include <linux/err.h>9#include <linux/firmware/imx/sci.h>10#include <linux/module.h>11#include <linux/of_address.h>12#include <linux/pinctrl/pinctrl.h>13#include <linux/platform_device.h>14 15#include "../core.h"16#include "pinctrl-imx.h"17 18#define IMX_SC_PAD_FUNC_GET_WAKEUP 919#define IMX_SC_PAD_FUNC_SET_WAKEUP 420#define IMX_SC_IRQ_GROUP_WAKE 3 /* Wakeup interrupts */21#define IMX_SC_IRQ_PAD 2 /* Pad wakeup */22 23enum pad_func_e {24 IMX_SC_PAD_FUNC_SET = 15,25 IMX_SC_PAD_FUNC_GET = 16,26};27 28struct imx_sc_msg_req_pad_set {29 struct imx_sc_rpc_msg hdr;30 u32 val;31 u16 pad;32} __packed __aligned(4);33 34struct imx_sc_msg_req_pad_get {35 struct imx_sc_rpc_msg hdr;36 u16 pad;37} __packed __aligned(4);38 39struct imx_sc_msg_resp_pad_get {40 struct imx_sc_rpc_msg hdr;41 u32 val;42} __packed;43 44struct imx_sc_msg_gpio_set_pad_wakeup {45 struct imx_sc_rpc_msg hdr;46 u16 pad;47 u8 wakeup;48} __packed __aligned(4);49 50static struct imx_sc_ipc *pinctrl_ipc_handle;51 52int imx_pinctrl_sc_ipc_init(struct platform_device *pdev)53{54 imx_scu_irq_group_enable(IMX_SC_IRQ_GROUP_WAKE,55 IMX_SC_IRQ_PAD, true);56 return imx_scu_get_handle(&pinctrl_ipc_handle);57}58EXPORT_SYMBOL_GPL(imx_pinctrl_sc_ipc_init);59 60int imx_pinconf_get_scu(struct pinctrl_dev *pctldev, unsigned pin_id,61 unsigned long *config)62{63 struct imx_sc_msg_req_pad_get msg;64 struct imx_sc_msg_resp_pad_get *resp;65 struct imx_sc_rpc_msg *hdr = &msg.hdr;66 int ret;67 68 hdr->ver = IMX_SC_RPC_VERSION;69 hdr->svc = IMX_SC_RPC_SVC_PAD;70 hdr->func = IMX_SC_PAD_FUNC_GET;71 hdr->size = 2;72 73 msg.pad = pin_id;74 75 ret = imx_scu_call_rpc(pinctrl_ipc_handle, &msg, true);76 if (ret)77 return ret;78 79 resp = (struct imx_sc_msg_resp_pad_get *)&msg;80 *config = resp->val;81 82 return 0;83}84EXPORT_SYMBOL_GPL(imx_pinconf_get_scu);85 86int imx_pinconf_set_scu(struct pinctrl_dev *pctldev, unsigned pin_id,87 unsigned long *configs, unsigned num_configs)88{89 struct imx_pinctrl *ipctl = pinctrl_dev_get_drvdata(pctldev);90 struct imx_sc_msg_req_pad_set msg;91 struct imx_sc_rpc_msg *hdr = &msg.hdr;92 unsigned int mux = configs[0];93 unsigned int conf;94 unsigned int val;95 int ret;96 97 if (num_configs == 1) {98 struct imx_sc_msg_gpio_set_pad_wakeup wmsg;99 100 hdr = &wmsg.hdr;101 hdr->ver = IMX_SC_RPC_VERSION;102 hdr->svc = IMX_SC_RPC_SVC_PAD;103 hdr->func = IMX_SC_PAD_FUNC_SET_WAKEUP;104 hdr->size = 2;105 wmsg.pad = pin_id;106 wmsg.wakeup = *configs;107 ret = imx_scu_call_rpc(pinctrl_ipc_handle, &wmsg, true);108 109 dev_dbg(ipctl->dev, "wakeup pin_id: %d type: %ld\n",110 pin_id, *configs);111 return ret;112 }113 114 /*115 * Set mux and conf together in one IPC call116 */117 WARN_ON(num_configs != 2);118 conf = configs[1];119 120 val = conf | BM_PAD_CTL_IFMUX_ENABLE | BM_PAD_CTL_GP_ENABLE;121 val |= mux << BP_PAD_CTL_IFMUX;122 123 hdr->ver = IMX_SC_RPC_VERSION;124 hdr->svc = IMX_SC_RPC_SVC_PAD;125 hdr->func = IMX_SC_PAD_FUNC_SET;126 hdr->size = 3;127 128 msg.pad = pin_id;129 msg.val = val;130 131 ret = imx_scu_call_rpc(pinctrl_ipc_handle, &msg, true);132 133 dev_dbg(ipctl->dev, "write: pin_id %u config 0x%x val 0x%x\n",134 pin_id, conf, val);135 136 return ret;137}138EXPORT_SYMBOL_GPL(imx_pinconf_set_scu);139 140void imx_pinctrl_parse_pin_scu(struct imx_pinctrl *ipctl,141 unsigned int *pin_id, struct imx_pin *pin,142 const __be32 **list_p)143{144 const struct imx_pinctrl_soc_info *info = ipctl->info;145 struct imx_pin_scu *pin_scu = &pin->conf.scu;146 const __be32 *list = *list_p;147 148 pin->pin = be32_to_cpu(*list++);149 *pin_id = pin->pin;150 pin_scu->mux_mode = be32_to_cpu(*list++);151 pin_scu->config = be32_to_cpu(*list++);152 *list_p = list;153 154 dev_dbg(ipctl->dev, "%s: 0x%x 0x%08lx", info->pins[pin->pin].name,155 pin_scu->mux_mode, pin_scu->config);156}157EXPORT_SYMBOL_GPL(imx_pinctrl_parse_pin_scu);158 159MODULE_AUTHOR("Dong Aisheng <aisheng.dong@nxp.com>");160MODULE_DESCRIPTION("NXP i.MX SCU common pinctrl driver");161MODULE_LICENSE("GPL v2");162