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path: root/drivers/ptp/ptp_qoriq_debugfs.c
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Diffstat (limited to 'drivers/ptp/ptp_qoriq_debugfs.c')
-rw-r--r--drivers/ptp/ptp_qoriq_debugfs.c101
1 files changed, 101 insertions, 0 deletions
diff --git a/drivers/ptp/ptp_qoriq_debugfs.c b/drivers/ptp/ptp_qoriq_debugfs.c
new file mode 100644
index 000000000..e8dddcedf
--- /dev/null
+++ b/drivers/ptp/ptp_qoriq_debugfs.c
@@ -0,0 +1,101 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* Copyright 2019 NXP
+ */
+#include <linux/device.h>
+#include <linux/debugfs.h>
+#include <linux/fsl/ptp_qoriq.h>
+
+static int ptp_qoriq_fiper1_lpbk_get(void *data, u64 *val)
+{
+ struct ptp_qoriq *ptp_qoriq = data;
+ struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
+ u32 ctrl;
+
+ ctrl = ptp_qoriq->read(&regs->ctrl_regs->tmr_ctrl);
+ *val = ctrl & PP1L ? 1 : 0;
+
+ return 0;
+}
+
+static int ptp_qoriq_fiper1_lpbk_set(void *data, u64 val)
+{
+ struct ptp_qoriq *ptp_qoriq = data;
+ struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
+ u32 ctrl;
+
+ ctrl = ptp_qoriq->read(&regs->ctrl_regs->tmr_ctrl);
+ if (val == 0)
+ ctrl &= ~PP1L;
+ else
+ ctrl |= PP1L;
+
+ ptp_qoriq->write(&regs->ctrl_regs->tmr_ctrl, ctrl);
+ return 0;
+}
+
+DEFINE_DEBUGFS_ATTRIBUTE(ptp_qoriq_fiper1_fops, ptp_qoriq_fiper1_lpbk_get,
+ ptp_qoriq_fiper1_lpbk_set, "%llu\n");
+
+static int ptp_qoriq_fiper2_lpbk_get(void *data, u64 *val)
+{
+ struct ptp_qoriq *ptp_qoriq = data;
+ struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
+ u32 ctrl;
+
+ ctrl = ptp_qoriq->read(&regs->ctrl_regs->tmr_ctrl);
+ *val = ctrl & PP2L ? 1 : 0;
+
+ return 0;
+}
+
+static int ptp_qoriq_fiper2_lpbk_set(void *data, u64 val)
+{
+ struct ptp_qoriq *ptp_qoriq = data;
+ struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
+ u32 ctrl;
+
+ ctrl = ptp_qoriq->read(&regs->ctrl_regs->tmr_ctrl);
+ if (val == 0)
+ ctrl &= ~PP2L;
+ else
+ ctrl |= PP2L;
+
+ ptp_qoriq->write(&regs->ctrl_regs->tmr_ctrl, ctrl);
+ return 0;
+}
+
+DEFINE_DEBUGFS_ATTRIBUTE(ptp_qoriq_fiper2_fops, ptp_qoriq_fiper2_lpbk_get,
+ ptp_qoriq_fiper2_lpbk_set, "%llu\n");
+
+void ptp_qoriq_create_debugfs(struct ptp_qoriq *ptp_qoriq)
+{
+ struct dentry *root;
+
+ root = debugfs_create_dir(dev_name(ptp_qoriq->dev), NULL);
+ if (IS_ERR(root))
+ return;
+ if (!root)
+ goto err_root;
+
+ ptp_qoriq->debugfs_root = root;
+
+ if (!debugfs_create_file_unsafe("fiper1-loopback", 0600, root,
+ ptp_qoriq, &ptp_qoriq_fiper1_fops))
+ goto err_node;
+ if (!debugfs_create_file_unsafe("fiper2-loopback", 0600, root,
+ ptp_qoriq, &ptp_qoriq_fiper2_fops))
+ goto err_node;
+ return;
+
+err_node:
+ debugfs_remove_recursive(root);
+ ptp_qoriq->debugfs_root = NULL;
+err_root:
+ dev_err(ptp_qoriq->dev, "failed to initialize debugfs\n");
+}
+
+void ptp_qoriq_remove_debugfs(struct ptp_qoriq *ptp_qoriq)
+{
+ debugfs_remove_recursive(ptp_qoriq->debugfs_root);
+ ptp_qoriq->debugfs_root = NULL;
+}