threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
62 lines
1.7 KiB
C
62 lines
1.7 KiB
C
/*
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* Copyright (C) 2011-2015 MediaTek Inc.
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*
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* This program is free software: you can redistribute it and/or modify it under
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* the terms of the GNU General Public License version 2 as published by the
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* Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details
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* .
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <linux/device.h> /* needed by device_* */
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#include "scp_ipi_pin.h"
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#include "scp_mbox_layout.h"
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#include "scp_scpctl.h"
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/*
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* A device node to send commands to scp wit unified interface
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* @magic: should be 666
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* @type: a class for different types of commands
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* @op: the operation specified in a command type
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* @return: 0 if success, -EINVAL if wrong value of number
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* of parameters
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*/
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static ssize_t scpctl_store(struct device *kobj
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, struct device_attribute *attr, const char *buf, size_t n)
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{
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int ret;
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int magic, type, op;
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struct scpctl_cmd_s cmd;
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char *prompt = "[SCPCTL]:";
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if (sscanf(buf, "%d %d %d", &magic, &type, &op) != 3)
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return -EINVAL;
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pr_notice("%s %d %d %d\n", prompt, magic, type, op);
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if (magic != 666)
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return -EINVAL;
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cmd.type = type;
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cmd.op = op;
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ret = mtk_ipi_send(&scp_ipidev, IPI_OUT_SCPCTL_1, 0, &cmd,
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PIN_OUT_SIZE_SCPCTL_1, 0);
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if (ret != IPI_ACTION_DONE)
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goto _err;
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return n;
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_err:
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pr_notice("%s failed, %d\n", prompt, ret);
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return -EIO;
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}
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DEVICE_ATTR(scpctl, 0200, NULL, scpctl_store);
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