diff options
Diffstat (limited to 'drivers/staging/fsl_ppfe/pfe_debugfs.c')
-rw-r--r-- | drivers/staging/fsl_ppfe/pfe_debugfs.c | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/drivers/staging/fsl_ppfe/pfe_debugfs.c b/drivers/staging/fsl_ppfe/pfe_debugfs.c new file mode 100644 index 000000000000..993ff219736f --- /dev/null +++ b/drivers/staging/fsl_ppfe/pfe_debugfs.c @@ -0,0 +1,99 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2015-2016 Freescale Semiconductor, Inc. + * Copyright 2017 NXP + */ + +#include <linux/module.h> +#include <linux/debugfs.h> +#include <linux/platform_device.h> + +#include "pfe_mod.h" + +static int dmem_show(struct seq_file *s, void *unused) +{ + u32 dmem_addr, val; + int id = (long int)s->private; + int i; + + for (dmem_addr = 0; dmem_addr < CLASS_DMEM_SIZE; dmem_addr += 8 * 4) { + seq_printf(s, "%04x:", dmem_addr); + + for (i = 0; i < 8; i++) { + val = pe_dmem_read(id, dmem_addr + i * 4, 4); + seq_printf(s, " %02x %02x %02x %02x", val & 0xff, + (val >> 8) & 0xff, (val >> 16) & 0xff, + (val >> 24) & 0xff); + } + + seq_puts(s, "\n"); + } + + return 0; +} + +static int dmem_open(struct inode *inode, struct file *file) +{ + return single_open(file, dmem_show, inode->i_private); +} + +static const struct file_operations dmem_fops = { + .open = dmem_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +int pfe_debugfs_init(struct pfe *pfe) +{ + struct dentry *d; + + pr_info("%s\n", __func__); + + pfe->dentry = debugfs_create_dir("pfe", NULL); + if (IS_ERR_OR_NULL(pfe->dentry)) + goto err_dir; + + d = debugfs_create_file("pe0_dmem", 0444, pfe->dentry, (void *)0, + &dmem_fops); + if (IS_ERR_OR_NULL(d)) + goto err_pe; + + d = debugfs_create_file("pe1_dmem", 0444, pfe->dentry, (void *)1, + &dmem_fops); + if (IS_ERR_OR_NULL(d)) + goto err_pe; + + d = debugfs_create_file("pe2_dmem", 0444, pfe->dentry, (void *)2, + &dmem_fops); + if (IS_ERR_OR_NULL(d)) + goto err_pe; + + d = debugfs_create_file("pe3_dmem", 0444, pfe->dentry, (void *)3, + &dmem_fops); + if (IS_ERR_OR_NULL(d)) + goto err_pe; + + d = debugfs_create_file("pe4_dmem", 0444, pfe->dentry, (void *)4, + &dmem_fops); + if (IS_ERR_OR_NULL(d)) + goto err_pe; + + d = debugfs_create_file("pe5_dmem", 0444, pfe->dentry, (void *)5, + &dmem_fops); + if (IS_ERR_OR_NULL(d)) + goto err_pe; + + return 0; + +err_pe: + debugfs_remove_recursive(pfe->dentry); + +err_dir: + return -1; +} + +void pfe_debugfs_exit(struct pfe *pfe) +{ + debugfs_remove_recursive(pfe->dentry); +} |