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https://github.com/edk2-porting/linux-next.git
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f038ddf25b
There is QorIQ 1588 timer IP block on the new ENETC Ethernet controller. However it uses little endian mode which is different with before. This patch is to add little endian support for the driver by using "little-endian" dts node property. Signed-off-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 ptp_qoriq *ptp_qoriq = data;
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struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
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u32 ctrl;
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ctrl = ptp_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 ptp_qoriq *ptp_qoriq = data;
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struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
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u32 ctrl;
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ctrl = ptp_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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ptp_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 ptp_qoriq *ptp_qoriq = data;
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struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
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u32 ctrl;
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ctrl = ptp_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 ptp_qoriq *ptp_qoriq = data;
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struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
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u32 ctrl;
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ctrl = ptp_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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ptp_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 ptp_qoriq *ptp_qoriq)
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{
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struct dentry *root;
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root = debugfs_create_dir(dev_name(ptp_qoriq->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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ptp_qoriq->debugfs_root = root;
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if (!debugfs_create_file_unsafe("fiper1-loopback", 0600, root,
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ptp_qoriq, &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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ptp_qoriq, &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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ptp_qoriq->debugfs_root = NULL;
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err_root:
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dev_err(ptp_qoriq->dev, "failed to initialize debugfs\n");
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}
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void ptp_qoriq_remove_debugfs(struct ptp_qoriq *ptp_qoriq)
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{
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debugfs_remove_recursive(ptp_qoriq->debugfs_root);
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ptp_qoriq->debugfs_root = NULL;
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}
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