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130 lines
3.1 KiB
130 lines
3.1 KiB
// 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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* Dong Aisheng <[email protected]> |
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*/ |
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#include <linux/err.h> |
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#include <linux/firmware/imx/sci.h> |
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#include <linux/module.h> |
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#include <linux/of_address.h> |
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#include <linux/pinctrl/pinctrl.h> |
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#include <linux/platform_device.h> |
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#include "../core.h" |
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#include "pinctrl-imx.h" |
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enum pad_func_e { |
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IMX_SC_PAD_FUNC_SET = 15, |
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IMX_SC_PAD_FUNC_GET = 16, |
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}; |
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struct imx_sc_msg_req_pad_set { |
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struct imx_sc_rpc_msg hdr; |
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u32 val; |
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u16 pad; |
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} __packed __aligned(4); |
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struct imx_sc_msg_req_pad_get { |
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struct imx_sc_rpc_msg hdr; |
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u16 pad; |
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} __packed __aligned(4); |
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struct imx_sc_msg_resp_pad_get { |
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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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static struct imx_sc_ipc *pinctrl_ipc_handle; |
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int imx_pinctrl_sc_ipc_init(struct platform_device *pdev) |
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{ |
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return imx_scu_get_handle(&pinctrl_ipc_handle); |
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} |
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EXPORT_SYMBOL_GPL(imx_pinctrl_sc_ipc_init); |
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int imx_pinconf_get_scu(struct pinctrl_dev *pctldev, unsigned pin_id, |
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unsigned long *config) |
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{ |
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struct imx_sc_msg_req_pad_get msg; |
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struct imx_sc_msg_resp_pad_get *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 = IMX_SC_RPC_SVC_PAD; |
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hdr->func = IMX_SC_PAD_FUNC_GET; |
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hdr->size = 2; |
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msg.pad = pin_id; |
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ret = imx_scu_call_rpc(pinctrl_ipc_handle, &msg, true); |
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if (ret) |
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return ret; |
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resp = (struct imx_sc_msg_resp_pad_get *)&msg; |
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*config = resp->val; |
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return 0; |
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} |
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EXPORT_SYMBOL_GPL(imx_pinconf_get_scu); |
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int imx_pinconf_set_scu(struct pinctrl_dev *pctldev, unsigned pin_id, |
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unsigned long *configs, unsigned num_configs) |
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{ |
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struct imx_pinctrl *ipctl = pinctrl_dev_get_drvdata(pctldev); |
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struct imx_sc_msg_req_pad_set msg; |
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struct imx_sc_rpc_msg *hdr = &msg.hdr; |
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unsigned int mux = configs[0]; |
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unsigned int conf = configs[1]; |
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unsigned int val; |
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int ret; |
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/* |
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* Set mux and conf together in one IPC call |
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*/ |
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WARN_ON(num_configs != 2); |
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val = conf | BM_PAD_CTL_IFMUX_ENABLE | BM_PAD_CTL_GP_ENABLE; |
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val |= mux << BP_PAD_CTL_IFMUX; |
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hdr->ver = IMX_SC_RPC_VERSION; |
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hdr->svc = IMX_SC_RPC_SVC_PAD; |
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hdr->func = IMX_SC_PAD_FUNC_SET; |
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hdr->size = 3; |
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msg.pad = pin_id; |
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msg.val = val; |
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ret = imx_scu_call_rpc(pinctrl_ipc_handle, &msg, true); |
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dev_dbg(ipctl->dev, "write: pin_id %u config 0x%x val 0x%x\n", |
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pin_id, conf, val); |
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return ret; |
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} |
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EXPORT_SYMBOL_GPL(imx_pinconf_set_scu); |
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void imx_pinctrl_parse_pin_scu(struct imx_pinctrl *ipctl, |
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unsigned int *pin_id, struct imx_pin *pin, |
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const __be32 **list_p) |
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{ |
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const struct imx_pinctrl_soc_info *info = ipctl->info; |
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struct imx_pin_scu *pin_scu = &pin->conf.scu; |
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const __be32 *list = *list_p; |
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pin->pin = be32_to_cpu(*list++); |
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*pin_id = pin->pin; |
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pin_scu->mux_mode = be32_to_cpu(*list++); |
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pin_scu->config = be32_to_cpu(*list++); |
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*list_p = list; |
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dev_dbg(ipctl->dev, "%s: 0x%x 0x%08lx", info->pins[pin->pin].name, |
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pin_scu->mux_mode, pin_scu->config); |
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} |
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EXPORT_SYMBOL_GPL(imx_pinctrl_parse_pin_scu); |
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MODULE_AUTHOR("Dong Aisheng <[email protected]>"); |
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MODULE_DESCRIPTION("NXP i.MX SCU common pinctrl driver"); |
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MODULE_LICENSE("GPL v2");
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