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https://github.com/torvalds/linux
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84239b4459
Use DEFINE_DEBUGFS_ATTRIBUTE rather than DEFINE_SIMPLE_ATTRIBUTE for debugfs files. Semantic patch information: Rationale: DEFINE_SIMPLE_ATTRIBUTE + debugfs_create_file() imposes some significant overhead as compared to DEFINE_DEBUGFS_ATTRIBUTE + debugfs_create_file_unsafe(). Generated by: scripts/coccinelle/api/debugfs/debugfs_simple_attr.cocci Signed-off-by: YueHaibing <yuehaibing@huawei.com> Acked-by: Yangbo Lu <yangbo.lu@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
102 lines
2.3 KiB
C
102 lines
2.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/* Copyright 2019 NXP
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*/
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#include <linux/device.h>
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#include <linux/debugfs.h>
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#include <linux/fsl/ptp_qoriq.h>
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static int ptp_qoriq_fiper1_lpbk_get(void *data, u64 *val)
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{
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struct qoriq_ptp *qoriq_ptp = data;
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struct qoriq_ptp_registers *regs = &qoriq_ptp->regs;
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u32 ctrl;
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ctrl = qoriq_read(®s->ctrl_regs->tmr_ctrl);
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*val = ctrl & PP1L ? 1 : 0;
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return 0;
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}
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static int ptp_qoriq_fiper1_lpbk_set(void *data, u64 val)
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{
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struct qoriq_ptp *qoriq_ptp = data;
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struct qoriq_ptp_registers *regs = &qoriq_ptp->regs;
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u32 ctrl;
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ctrl = qoriq_read(®s->ctrl_regs->tmr_ctrl);
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if (val == 0)
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ctrl &= ~PP1L;
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else
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ctrl |= PP1L;
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qoriq_write(®s->ctrl_regs->tmr_ctrl, ctrl);
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return 0;
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}
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DEFINE_DEBUGFS_ATTRIBUTE(ptp_qoriq_fiper1_fops, ptp_qoriq_fiper1_lpbk_get,
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ptp_qoriq_fiper1_lpbk_set, "%llu\n");
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static int ptp_qoriq_fiper2_lpbk_get(void *data, u64 *val)
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{
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struct qoriq_ptp *qoriq_ptp = data;
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struct qoriq_ptp_registers *regs = &qoriq_ptp->regs;
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u32 ctrl;
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ctrl = qoriq_read(®s->ctrl_regs->tmr_ctrl);
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*val = ctrl & PP2L ? 1 : 0;
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return 0;
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}
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static int ptp_qoriq_fiper2_lpbk_set(void *data, u64 val)
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{
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struct qoriq_ptp *qoriq_ptp = data;
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struct qoriq_ptp_registers *regs = &qoriq_ptp->regs;
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u32 ctrl;
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ctrl = qoriq_read(®s->ctrl_regs->tmr_ctrl);
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if (val == 0)
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ctrl &= ~PP2L;
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else
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ctrl |= PP2L;
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qoriq_write(®s->ctrl_regs->tmr_ctrl, ctrl);
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return 0;
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}
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DEFINE_DEBUGFS_ATTRIBUTE(ptp_qoriq_fiper2_fops, ptp_qoriq_fiper2_lpbk_get,
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ptp_qoriq_fiper2_lpbk_set, "%llu\n");
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void ptp_qoriq_create_debugfs(struct qoriq_ptp *qoriq_ptp)
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{
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struct dentry *root;
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root = debugfs_create_dir(dev_name(qoriq_ptp->dev), NULL);
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if (IS_ERR(root))
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return;
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if (!root)
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goto err_root;
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qoriq_ptp->debugfs_root = root;
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if (!debugfs_create_file_unsafe("fiper1-loopback", 0600, root,
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qoriq_ptp, &ptp_qoriq_fiper1_fops))
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goto err_node;
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if (!debugfs_create_file_unsafe("fiper2-loopback", 0600, root,
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qoriq_ptp, &ptp_qoriq_fiper2_fops))
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goto err_node;
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return;
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err_node:
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debugfs_remove_recursive(root);
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qoriq_ptp->debugfs_root = NULL;
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err_root:
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dev_err(qoriq_ptp->dev, "failed to initialize debugfs\n");
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}
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void ptp_qoriq_remove_debugfs(struct qoriq_ptp *qoriq_ptp)
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{
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debugfs_remove_recursive(qoriq_ptp->debugfs_root);
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qoriq_ptp->debugfs_root = NULL;
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}
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