886 lines
26 KiB
C
886 lines
26 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/***************************************************************************
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* Copyright (C) 2010-2012 by Bruno Prémont <bonbons@linux-vserver.org> *
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* *
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* Based on Logitech G13 driver (v0.4) *
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* Copyright (C) 2009 by Rick L. Vinyard, Jr. <rvinyard@cs.nmsu.edu> *
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* *
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***************************************************************************/
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#include <linux/hid.h>
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#include <linux/hid-debug.h>
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#include <linux/fb.h>
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#include <linux/seq_file.h>
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#include <linux/debugfs.h>
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#include <linux/module.h>
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#include <linux/uaccess.h>
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#include "hid-picolcd.h"
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static int picolcd_debug_reset_show(struct seq_file *f, void *p)
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{
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if (picolcd_fbinfo((struct picolcd_data *)f->private))
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seq_printf(f, "all fb\n");
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else
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seq_printf(f, "all\n");
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return 0;
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}
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static int picolcd_debug_reset_open(struct inode *inode, struct file *f)
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{
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return single_open(f, picolcd_debug_reset_show, inode->i_private);
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}
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static ssize_t picolcd_debug_reset_write(struct file *f, const char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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struct picolcd_data *data = ((struct seq_file *)f->private_data)->private;
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char buf[32];
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size_t cnt = min(count, sizeof(buf)-1);
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if (copy_from_user(buf, user_buf, cnt))
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return -EFAULT;
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while (cnt > 0 && (buf[cnt-1] == ' ' || buf[cnt-1] == '\n'))
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cnt--;
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buf[cnt] = '\0';
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if (strcmp(buf, "all") == 0) {
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picolcd_reset(data->hdev);
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picolcd_fb_reset(data, 1);
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} else if (strcmp(buf, "fb") == 0) {
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picolcd_fb_reset(data, 1);
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} else {
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return -EINVAL;
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}
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return count;
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}
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static const struct file_operations picolcd_debug_reset_fops = {
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.owner = THIS_MODULE,
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.open = picolcd_debug_reset_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.write = picolcd_debug_reset_write,
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.release = single_release,
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};
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/*
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* The "eeprom" file
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*/
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static ssize_t picolcd_debug_eeprom_read(struct file *f, char __user *u,
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size_t s, loff_t *off)
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{
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struct picolcd_data *data = f->private_data;
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struct picolcd_pending *resp;
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u8 raw_data[3];
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ssize_t ret = -EIO;
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if (s == 0)
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return -EINVAL;
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if (*off > 0x0ff)
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return 0;
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/* prepare buffer with info about what we want to read (addr & len) */
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raw_data[0] = *off & 0xff;
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raw_data[1] = (*off >> 8) & 0xff;
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raw_data[2] = s < 20 ? s : 20;
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if (*off + raw_data[2] > 0xff)
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raw_data[2] = 0x100 - *off;
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resp = picolcd_send_and_wait(data->hdev, REPORT_EE_READ, raw_data,
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sizeof(raw_data));
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if (!resp)
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return -EIO;
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if (resp->in_report && resp->in_report->id == REPORT_EE_DATA) {
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/* successful read :) */
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ret = resp->raw_data[2];
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if (ret > s)
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ret = s;
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if (copy_to_user(u, resp->raw_data+3, ret))
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ret = -EFAULT;
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else
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*off += ret;
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} /* anything else is some kind of IO error */
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kfree(resp);
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return ret;
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}
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static ssize_t picolcd_debug_eeprom_write(struct file *f, const char __user *u,
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size_t s, loff_t *off)
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{
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struct picolcd_data *data = f->private_data;
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struct picolcd_pending *resp;
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ssize_t ret = -EIO;
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u8 raw_data[23];
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if (s == 0)
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return -EINVAL;
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if (*off > 0x0ff)
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return -ENOSPC;
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memset(raw_data, 0, sizeof(raw_data));
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raw_data[0] = *off & 0xff;
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raw_data[1] = (*off >> 8) & 0xff;
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raw_data[2] = min_t(size_t, 20, s);
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if (*off + raw_data[2] > 0xff)
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raw_data[2] = 0x100 - *off;
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if (copy_from_user(raw_data+3, u, min((u8)20, raw_data[2])))
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return -EFAULT;
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resp = picolcd_send_and_wait(data->hdev, REPORT_EE_WRITE, raw_data,
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sizeof(raw_data));
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if (!resp)
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return -EIO;
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if (resp->in_report && resp->in_report->id == REPORT_EE_DATA) {
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/* check if written data matches */
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if (memcmp(raw_data, resp->raw_data, 3+raw_data[2]) == 0) {
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*off += raw_data[2];
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ret = raw_data[2];
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}
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}
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kfree(resp);
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return ret;
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}
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/*
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* Notes:
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* - read/write happens in chunks of at most 20 bytes, it's up to userspace
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* to loop in order to get more data.
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* - on write errors on otherwise correct write request the bytes
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* that should have been written are in undefined state.
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*/
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static const struct file_operations picolcd_debug_eeprom_fops = {
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.owner = THIS_MODULE,
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.open = simple_open,
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.read = picolcd_debug_eeprom_read,
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.write = picolcd_debug_eeprom_write,
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.llseek = generic_file_llseek,
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};
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/*
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* The "flash" file
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*/
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/* record a flash address to buf (bounds check to be done by caller) */
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static int _picolcd_flash_setaddr(struct picolcd_data *data, u8 *buf, long off)
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{
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buf[0] = off & 0xff;
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buf[1] = (off >> 8) & 0xff;
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if (data->addr_sz == 3)
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buf[2] = (off >> 16) & 0xff;
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return data->addr_sz == 2 ? 2 : 3;
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}
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/* read a given size of data (bounds check to be done by caller) */
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static ssize_t _picolcd_flash_read(struct picolcd_data *data, int report_id,
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char __user *u, size_t s, loff_t *off)
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{
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struct picolcd_pending *resp;
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u8 raw_data[4];
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ssize_t ret = 0;
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int len_off, err = -EIO;
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while (s > 0) {
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err = -EIO;
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len_off = _picolcd_flash_setaddr(data, raw_data, *off);
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raw_data[len_off] = s > 32 ? 32 : s;
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resp = picolcd_send_and_wait(data->hdev, report_id, raw_data, len_off+1);
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if (!resp || !resp->in_report)
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goto skip;
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if (resp->in_report->id == REPORT_MEMORY ||
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resp->in_report->id == REPORT_BL_READ_MEMORY) {
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if (memcmp(raw_data, resp->raw_data, len_off+1) != 0)
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goto skip;
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if (copy_to_user(u+ret, resp->raw_data+len_off+1, raw_data[len_off])) {
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err = -EFAULT;
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goto skip;
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}
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*off += raw_data[len_off];
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s -= raw_data[len_off];
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ret += raw_data[len_off];
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err = 0;
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}
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skip:
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kfree(resp);
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if (err)
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return ret > 0 ? ret : err;
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}
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return ret;
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}
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static ssize_t picolcd_debug_flash_read(struct file *f, char __user *u,
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size_t s, loff_t *off)
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{
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struct picolcd_data *data = f->private_data;
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if (s == 0)
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return -EINVAL;
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if (*off > 0x05fff)
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return 0;
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if (*off + s > 0x05fff)
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s = 0x06000 - *off;
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if (data->status & PICOLCD_BOOTLOADER)
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return _picolcd_flash_read(data, REPORT_BL_READ_MEMORY, u, s, off);
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else
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return _picolcd_flash_read(data, REPORT_READ_MEMORY, u, s, off);
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}
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/* erase block aligned to 64bytes boundary */
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static ssize_t _picolcd_flash_erase64(struct picolcd_data *data, int report_id,
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loff_t *off)
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{
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struct picolcd_pending *resp;
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u8 raw_data[3];
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int len_off;
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ssize_t ret = -EIO;
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if (*off & 0x3f)
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return -EINVAL;
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len_off = _picolcd_flash_setaddr(data, raw_data, *off);
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resp = picolcd_send_and_wait(data->hdev, report_id, raw_data, len_off);
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if (!resp || !resp->in_report)
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goto skip;
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if (resp->in_report->id == REPORT_MEMORY ||
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resp->in_report->id == REPORT_BL_ERASE_MEMORY) {
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if (memcmp(raw_data, resp->raw_data, len_off) != 0)
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goto skip;
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ret = 0;
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}
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skip:
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kfree(resp);
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return ret;
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}
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/* write a given size of data (bounds check to be done by caller) */
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static ssize_t _picolcd_flash_write(struct picolcd_data *data, int report_id,
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const char __user *u, size_t s, loff_t *off)
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{
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struct picolcd_pending *resp;
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u8 raw_data[36];
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ssize_t ret = 0;
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int len_off, err = -EIO;
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while (s > 0) {
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err = -EIO;
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len_off = _picolcd_flash_setaddr(data, raw_data, *off);
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raw_data[len_off] = s > 32 ? 32 : s;
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if (copy_from_user(raw_data+len_off+1, u, raw_data[len_off])) {
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err = -EFAULT;
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break;
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}
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resp = picolcd_send_and_wait(data->hdev, report_id, raw_data,
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len_off+1+raw_data[len_off]);
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if (!resp || !resp->in_report)
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goto skip;
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if (resp->in_report->id == REPORT_MEMORY ||
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resp->in_report->id == REPORT_BL_WRITE_MEMORY) {
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if (memcmp(raw_data, resp->raw_data, len_off+1+raw_data[len_off]) != 0)
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goto skip;
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*off += raw_data[len_off];
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s -= raw_data[len_off];
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ret += raw_data[len_off];
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err = 0;
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}
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skip:
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kfree(resp);
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if (err)
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break;
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}
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return ret > 0 ? ret : err;
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}
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static ssize_t picolcd_debug_flash_write(struct file *f, const char __user *u,
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size_t s, loff_t *off)
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{
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struct picolcd_data *data = f->private_data;
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ssize_t err, ret = 0;
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int report_erase, report_write;
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if (s == 0)
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return -EINVAL;
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if (*off > 0x5fff)
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return -ENOSPC;
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if (s & 0x3f)
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return -EINVAL;
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if (*off & 0x3f)
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return -EINVAL;
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if (data->status & PICOLCD_BOOTLOADER) {
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report_erase = REPORT_BL_ERASE_MEMORY;
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report_write = REPORT_BL_WRITE_MEMORY;
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} else {
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report_erase = REPORT_ERASE_MEMORY;
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report_write = REPORT_WRITE_MEMORY;
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}
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mutex_lock(&data->mutex_flash);
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while (s > 0) {
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err = _picolcd_flash_erase64(data, report_erase, off);
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if (err)
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break;
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err = _picolcd_flash_write(data, report_write, u, 64, off);
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if (err < 0)
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break;
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ret += err;
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*off += err;
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s -= err;
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if (err != 64)
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break;
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}
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mutex_unlock(&data->mutex_flash);
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return ret > 0 ? ret : err;
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}
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/*
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* Notes:
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* - concurrent writing is prevented by mutex and all writes must be
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* n*64 bytes and 64-byte aligned, each write being preceded by an
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* ERASE which erases a 64byte block.
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* If less than requested was written or an error is returned for an
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* otherwise correct write request the next 64-byte block which should
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* have been written is in undefined state (mostly: original, erased,
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* (half-)written with write error)
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* - reading can happen without special restriction
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*/
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static const struct file_operations picolcd_debug_flash_fops = {
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.owner = THIS_MODULE,
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.open = simple_open,
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.read = picolcd_debug_flash_read,
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.write = picolcd_debug_flash_write,
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.llseek = generic_file_llseek,
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};
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/*
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* Helper code for HID report level dumping/debugging
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*/
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static const char * const error_codes[] = {
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"success", "parameter missing", "data_missing", "block readonly",
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"block not erasable", "block too big", "section overflow",
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"invalid command length", "invalid data length",
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};
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static void dump_buff_as_hex(char *dst, size_t dst_sz, const u8 *data,
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const size_t data_len)
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{
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int i, j;
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for (i = j = 0; i < data_len && j + 4 < dst_sz; i++) {
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dst[j++] = hex_asc[(data[i] >> 4) & 0x0f];
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dst[j++] = hex_asc[data[i] & 0x0f];
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dst[j++] = ' ';
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}
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dst[j] = '\0';
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if (j > 0)
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dst[j-1] = '\n';
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if (i < data_len && j > 2)
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dst[j-2] = dst[j-3] = '.';
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}
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void picolcd_debug_out_report(struct picolcd_data *data,
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struct hid_device *hdev, struct hid_report *report)
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{
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u8 *raw_data;
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int raw_size = (report->size >> 3) + 1;
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char *buff;
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#define BUFF_SZ 256
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/* Avoid unnecessary overhead if debugfs is disabled */
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if (list_empty(&hdev->debug_list))
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return;
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buff = kmalloc(BUFF_SZ, GFP_ATOMIC);
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if (!buff)
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return;
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raw_data = hid_alloc_report_buf(report, GFP_ATOMIC);
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if (!raw_data) {
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kfree(buff);
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return;
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}
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snprintf(buff, BUFF_SZ, "\nout report %d (size %d) = ",
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report->id, raw_size);
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hid_debug_event(hdev, buff);
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raw_data[0] = report->id;
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hid_output_report(report, raw_data);
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dump_buff_as_hex(buff, BUFF_SZ, raw_data, raw_size);
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hid_debug_event(hdev, buff);
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switch (report->id) {
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case REPORT_LED_STATE:
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/* 1 data byte with GPO state */
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snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
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"REPORT_LED_STATE", report->id, raw_size-1);
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hid_debug_event(hdev, buff);
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snprintf(buff, BUFF_SZ, "\tGPO state: 0x%02x\n", raw_data[1]);
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hid_debug_event(hdev, buff);
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break;
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case REPORT_BRIGHTNESS:
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/* 1 data byte with brightness */
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snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
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"REPORT_BRIGHTNESS", report->id, raw_size-1);
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hid_debug_event(hdev, buff);
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snprintf(buff, BUFF_SZ, "\tBrightness: 0x%02x\n", raw_data[1]);
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hid_debug_event(hdev, buff);
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break;
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case REPORT_CONTRAST:
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/* 1 data byte with contrast */
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snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
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"REPORT_CONTRAST", report->id, raw_size-1);
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hid_debug_event(hdev, buff);
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snprintf(buff, BUFF_SZ, "\tContrast: 0x%02x\n", raw_data[1]);
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hid_debug_event(hdev, buff);
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break;
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case REPORT_RESET:
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/* 2 data bytes with reset duration in ms */
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snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
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"REPORT_RESET", report->id, raw_size-1);
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hid_debug_event(hdev, buff);
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snprintf(buff, BUFF_SZ, "\tDuration: 0x%02x%02x (%dms)\n",
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raw_data[2], raw_data[1], raw_data[2] << 8 | raw_data[1]);
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hid_debug_event(hdev, buff);
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break;
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case REPORT_LCD_CMD:
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/* 63 data bytes with LCD commands */
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snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
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"REPORT_LCD_CMD", report->id, raw_size-1);
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hid_debug_event(hdev, buff);
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/* TODO: format decoding */
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break;
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case REPORT_LCD_DATA:
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/* 63 data bytes with LCD data */
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snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
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"REPORT_LCD_CMD", report->id, raw_size-1);
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/* TODO: format decoding */
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hid_debug_event(hdev, buff);
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break;
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case REPORT_LCD_CMD_DATA:
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/* 63 data bytes with LCD commands and data */
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snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
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"REPORT_LCD_CMD", report->id, raw_size-1);
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/* TODO: format decoding */
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hid_debug_event(hdev, buff);
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break;
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case REPORT_EE_READ:
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/* 3 data bytes with read area description */
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snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
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"REPORT_EE_READ", report->id, raw_size-1);
|
|
hid_debug_event(hdev, buff);
|
|
snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x\n",
|
|
raw_data[2], raw_data[1]);
|
|
hid_debug_event(hdev, buff);
|
|
snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[3]);
|
|
hid_debug_event(hdev, buff);
|
|
break;
|
|
case REPORT_EE_WRITE:
|
|
/* 3+1..20 data bytes with write area description */
|
|
snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
|
|
"REPORT_EE_WRITE", report->id, raw_size-1);
|
|
hid_debug_event(hdev, buff);
|
|
snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x\n",
|
|
raw_data[2], raw_data[1]);
|
|
hid_debug_event(hdev, buff);
|
|
snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[3]);
|
|
hid_debug_event(hdev, buff);
|
|
if (raw_data[3] == 0) {
|
|
snprintf(buff, BUFF_SZ, "\tNo data\n");
|
|
} else if (raw_data[3] + 4 <= raw_size) {
|
|
snprintf(buff, BUFF_SZ, "\tData: ");
|
|
hid_debug_event(hdev, buff);
|
|
dump_buff_as_hex(buff, BUFF_SZ, raw_data+4, raw_data[3]);
|
|
} else {
|
|
snprintf(buff, BUFF_SZ, "\tData overflowed\n");
|
|
}
|
|
hid_debug_event(hdev, buff);
|
|
break;
|
|
case REPORT_ERASE_MEMORY:
|
|
case REPORT_BL_ERASE_MEMORY:
|
|
/* 3 data bytes with pointer inside erase block */
|
|
snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
|
|
"REPORT_ERASE_MEMORY", report->id, raw_size-1);
|
|
hid_debug_event(hdev, buff);
|
|
switch (data->addr_sz) {
|
|
case 2:
|
|
snprintf(buff, BUFF_SZ, "\tAddress inside 64 byte block: 0x%02x%02x\n",
|
|
raw_data[2], raw_data[1]);
|
|
break;
|
|
case 3:
|
|
snprintf(buff, BUFF_SZ, "\tAddress inside 64 byte block: 0x%02x%02x%02x\n",
|
|
raw_data[3], raw_data[2], raw_data[1]);
|
|
break;
|
|
default:
|
|
snprintf(buff, BUFF_SZ, "\tNot supported\n");
|
|
}
|
|
hid_debug_event(hdev, buff);
|
|
break;
|
|
case REPORT_READ_MEMORY:
|
|
case REPORT_BL_READ_MEMORY:
|
|
/* 4 data bytes with read area description */
|
|
snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
|
|
"REPORT_READ_MEMORY", report->id, raw_size-1);
|
|
hid_debug_event(hdev, buff);
|
|
switch (data->addr_sz) {
|
|
case 2:
|
|
snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x\n",
|
|
raw_data[2], raw_data[1]);
|
|
hid_debug_event(hdev, buff);
|
|
snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[3]);
|
|
break;
|
|
case 3:
|
|
snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x%02x\n",
|
|
raw_data[3], raw_data[2], raw_data[1]);
|
|
hid_debug_event(hdev, buff);
|
|
snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[4]);
|
|
break;
|
|
default:
|
|
snprintf(buff, BUFF_SZ, "\tNot supported\n");
|
|
}
|
|
hid_debug_event(hdev, buff);
|
|
break;
|
|
case REPORT_WRITE_MEMORY:
|
|
case REPORT_BL_WRITE_MEMORY:
|
|
/* 4+1..32 data bytes with write adrea description */
|
|
snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
|
|
"REPORT_WRITE_MEMORY", report->id, raw_size-1);
|
|
hid_debug_event(hdev, buff);
|
|
switch (data->addr_sz) {
|
|
case 2:
|
|
snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x\n",
|
|
raw_data[2], raw_data[1]);
|
|
hid_debug_event(hdev, buff);
|
|
snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[3]);
|
|
hid_debug_event(hdev, buff);
|
|
if (raw_data[3] == 0) {
|
|
snprintf(buff, BUFF_SZ, "\tNo data\n");
|
|
} else if (raw_data[3] + 4 <= raw_size) {
|
|
snprintf(buff, BUFF_SZ, "\tData: ");
|
|
hid_debug_event(hdev, buff);
|
|
dump_buff_as_hex(buff, BUFF_SZ, raw_data+4, raw_data[3]);
|
|
} else {
|
|
snprintf(buff, BUFF_SZ, "\tData overflowed\n");
|
|
}
|
|
break;
|
|
case 3:
|
|
snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x%02x\n",
|
|
raw_data[3], raw_data[2], raw_data[1]);
|
|
hid_debug_event(hdev, buff);
|
|
snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[4]);
|
|
hid_debug_event(hdev, buff);
|
|
if (raw_data[4] == 0) {
|
|
snprintf(buff, BUFF_SZ, "\tNo data\n");
|
|
} else if (raw_data[4] + 5 <= raw_size) {
|
|
snprintf(buff, BUFF_SZ, "\tData: ");
|
|
hid_debug_event(hdev, buff);
|
|
dump_buff_as_hex(buff, BUFF_SZ, raw_data+5, raw_data[4]);
|
|
} else {
|
|
snprintf(buff, BUFF_SZ, "\tData overflowed\n");
|
|
}
|
|
break;
|
|
default:
|
|
snprintf(buff, BUFF_SZ, "\tNot supported\n");
|
|
}
|
|
hid_debug_event(hdev, buff);
|
|
break;
|
|
case REPORT_SPLASH_RESTART:
|
|
/* TODO */
|
|
break;
|
|
case REPORT_EXIT_KEYBOARD:
|
|
snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
|
|
"REPORT_EXIT_KEYBOARD", report->id, raw_size-1);
|
|
hid_debug_event(hdev, buff);
|
|
snprintf(buff, BUFF_SZ, "\tRestart delay: %dms (0x%02x%02x)\n",
|
|
raw_data[1] | (raw_data[2] << 8),
|
|
raw_data[2], raw_data[1]);
|
|
hid_debug_event(hdev, buff);
|
|
break;
|
|
case REPORT_VERSION:
|
|
snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
|
|
"REPORT_VERSION", report->id, raw_size-1);
|
|
hid_debug_event(hdev, buff);
|
|
break;
|
|
case REPORT_DEVID:
|
|
snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
|
|
"REPORT_DEVID", report->id, raw_size-1);
|
|
hid_debug_event(hdev, buff);
|
|
break;
|
|
case REPORT_SPLASH_SIZE:
|
|
snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
|
|
"REPORT_SPLASH_SIZE", report->id, raw_size-1);
|
|
hid_debug_event(hdev, buff);
|
|
break;
|
|
case REPORT_HOOK_VERSION:
|
|
snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
|
|
"REPORT_HOOK_VERSION", report->id, raw_size-1);
|
|
hid_debug_event(hdev, buff);
|
|
break;
|
|
case REPORT_EXIT_FLASHER:
|
|
snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
|
|
"REPORT_VERSION", report->id, raw_size-1);
|
|
hid_debug_event(hdev, buff);
|
|
snprintf(buff, BUFF_SZ, "\tRestart delay: %dms (0x%02x%02x)\n",
|
|
raw_data[1] | (raw_data[2] << 8),
|
|
raw_data[2], raw_data[1]);
|
|
hid_debug_event(hdev, buff);
|
|
break;
|
|
default:
|
|
snprintf(buff, BUFF_SZ, "out report %s (%d, size=%d)\n",
|
|
"<unknown>", report->id, raw_size-1);
|
|
hid_debug_event(hdev, buff);
|
|
break;
|
|
}
|
|
wake_up_interruptible(&hdev->debug_wait);
|
|
kfree(raw_data);
|
|
kfree(buff);
|
|
}
|
|
|
|
void picolcd_debug_raw_event(struct picolcd_data *data,
|
|
struct hid_device *hdev, struct hid_report *report,
|
|
u8 *raw_data, int size)
|
|
{
|
|
char *buff;
|
|
|
|
#define BUFF_SZ 256
|
|
/* Avoid unnecessary overhead if debugfs is disabled */
|
|
if (list_empty(&hdev->debug_list))
|
|
return;
|
|
|
|
buff = kmalloc(BUFF_SZ, GFP_ATOMIC);
|
|
if (!buff)
|
|
return;
|
|
|
|
switch (report->id) {
|
|
case REPORT_ERROR_CODE:
|
|
/* 2 data bytes with affected report and error code */
|
|
snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n",
|
|
"REPORT_ERROR_CODE", report->id, size-1);
|
|
hid_debug_event(hdev, buff);
|
|
if (raw_data[2] < ARRAY_SIZE(error_codes))
|
|
snprintf(buff, BUFF_SZ, "\tError code 0x%02x (%s) in reply to report 0x%02x\n",
|
|
raw_data[2], error_codes[raw_data[2]], raw_data[1]);
|
|
else
|
|
snprintf(buff, BUFF_SZ, "\tError code 0x%02x in reply to report 0x%02x\n",
|
|
raw_data[2], raw_data[1]);
|
|
hid_debug_event(hdev, buff);
|
|
break;
|
|
case REPORT_KEY_STATE:
|
|
/* 2 data bytes with key state */
|
|
snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n",
|
|
"REPORT_KEY_STATE", report->id, size-1);
|
|
hid_debug_event(hdev, buff);
|
|
if (raw_data[1] == 0)
|
|
snprintf(buff, BUFF_SZ, "\tNo key pressed\n");
|
|
else if (raw_data[2] == 0)
|
|
snprintf(buff, BUFF_SZ, "\tOne key pressed: 0x%02x (%d)\n",
|
|
raw_data[1], raw_data[1]);
|
|
else
|
|
snprintf(buff, BUFF_SZ, "\tTwo keys pressed: 0x%02x (%d), 0x%02x (%d)\n",
|
|
raw_data[1], raw_data[1], raw_data[2], raw_data[2]);
|
|
hid_debug_event(hdev, buff);
|
|
break;
|
|
case REPORT_IR_DATA:
|
|
/* Up to 20 byes of IR scancode data */
|
|
snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n",
|
|
"REPORT_IR_DATA", report->id, size-1);
|
|
hid_debug_event(hdev, buff);
|
|
if (raw_data[1] == 0) {
|
|
snprintf(buff, BUFF_SZ, "\tUnexpectedly 0 data length\n");
|
|
hid_debug_event(hdev, buff);
|
|
} else if (raw_data[1] + 1 <= size) {
|
|
snprintf(buff, BUFF_SZ, "\tData length: %d\n\tIR Data: ",
|
|
raw_data[1]);
|
|
hid_debug_event(hdev, buff);
|
|
dump_buff_as_hex(buff, BUFF_SZ, raw_data+2, raw_data[1]);
|
|
hid_debug_event(hdev, buff);
|
|
} else {
|
|
snprintf(buff, BUFF_SZ, "\tOverflowing data length: %d\n",
|
|
raw_data[1]-1);
|
|
hid_debug_event(hdev, buff);
|
|
}
|
|
break;
|
|
case REPORT_EE_DATA:
|
|
/* Data buffer in response to REPORT_EE_READ or REPORT_EE_WRITE */
|
|
snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n",
|
|
"REPORT_EE_DATA", report->id, size-1);
|
|
hid_debug_event(hdev, buff);
|
|
snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x\n",
|
|
raw_data[2], raw_data[1]);
|
|
hid_debug_event(hdev, buff);
|
|
snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[3]);
|
|
hid_debug_event(hdev, buff);
|
|
if (raw_data[3] == 0) {
|
|
snprintf(buff, BUFF_SZ, "\tNo data\n");
|
|
hid_debug_event(hdev, buff);
|
|
} else if (raw_data[3] + 4 <= size) {
|
|
snprintf(buff, BUFF_SZ, "\tData: ");
|
|
hid_debug_event(hdev, buff);
|
|
dump_buff_as_hex(buff, BUFF_SZ, raw_data+4, raw_data[3]);
|
|
hid_debug_event(hdev, buff);
|
|
} else {
|
|
snprintf(buff, BUFF_SZ, "\tData overflowed\n");
|
|
hid_debug_event(hdev, buff);
|
|
}
|
|
break;
|
|
case REPORT_MEMORY:
|
|
/* Data buffer in response to REPORT_READ_MEMORY or REPORT_WRITE_MEMORY */
|
|
snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n",
|
|
"REPORT_MEMORY", report->id, size-1);
|
|
hid_debug_event(hdev, buff);
|
|
switch (data->addr_sz) {
|
|
case 2:
|
|
snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x\n",
|
|
raw_data[2], raw_data[1]);
|
|
hid_debug_event(hdev, buff);
|
|
snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[3]);
|
|
hid_debug_event(hdev, buff);
|
|
if (raw_data[3] == 0) {
|
|
snprintf(buff, BUFF_SZ, "\tNo data\n");
|
|
} else if (raw_data[3] + 4 <= size) {
|
|
snprintf(buff, BUFF_SZ, "\tData: ");
|
|
hid_debug_event(hdev, buff);
|
|
dump_buff_as_hex(buff, BUFF_SZ, raw_data+4, raw_data[3]);
|
|
} else {
|
|
snprintf(buff, BUFF_SZ, "\tData overflowed\n");
|
|
}
|
|
break;
|
|
case 3:
|
|
snprintf(buff, BUFF_SZ, "\tData address: 0x%02x%02x%02x\n",
|
|
raw_data[3], raw_data[2], raw_data[1]);
|
|
hid_debug_event(hdev, buff);
|
|
snprintf(buff, BUFF_SZ, "\tData length: %d\n", raw_data[4]);
|
|
hid_debug_event(hdev, buff);
|
|
if (raw_data[4] == 0) {
|
|
snprintf(buff, BUFF_SZ, "\tNo data\n");
|
|
} else if (raw_data[4] + 5 <= size) {
|
|
snprintf(buff, BUFF_SZ, "\tData: ");
|
|
hid_debug_event(hdev, buff);
|
|
dump_buff_as_hex(buff, BUFF_SZ, raw_data+5, raw_data[4]);
|
|
} else {
|
|
snprintf(buff, BUFF_SZ, "\tData overflowed\n");
|
|
}
|
|
break;
|
|
default:
|
|
snprintf(buff, BUFF_SZ, "\tNot supported\n");
|
|
}
|
|
hid_debug_event(hdev, buff);
|
|
break;
|
|
case REPORT_VERSION:
|
|
snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n",
|
|
"REPORT_VERSION", report->id, size-1);
|
|
hid_debug_event(hdev, buff);
|
|
snprintf(buff, BUFF_SZ, "\tFirmware version: %d.%d\n",
|
|
raw_data[2], raw_data[1]);
|
|
hid_debug_event(hdev, buff);
|
|
break;
|
|
case REPORT_BL_ERASE_MEMORY:
|
|
snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n",
|
|
"REPORT_BL_ERASE_MEMORY", report->id, size-1);
|
|
hid_debug_event(hdev, buff);
|
|
/* TODO */
|
|
break;
|
|
case REPORT_BL_READ_MEMORY:
|
|
snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n",
|
|
"REPORT_BL_READ_MEMORY", report->id, size-1);
|
|
hid_debug_event(hdev, buff);
|
|
/* TODO */
|
|
break;
|
|
case REPORT_BL_WRITE_MEMORY:
|
|
snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n",
|
|
"REPORT_BL_WRITE_MEMORY", report->id, size-1);
|
|
hid_debug_event(hdev, buff);
|
|
/* TODO */
|
|
break;
|
|
case REPORT_DEVID:
|
|
snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n",
|
|
"REPORT_DEVID", report->id, size-1);
|
|
hid_debug_event(hdev, buff);
|
|
snprintf(buff, BUFF_SZ, "\tSerial: 0x%02x%02x%02x%02x\n",
|
|
raw_data[1], raw_data[2], raw_data[3], raw_data[4]);
|
|
hid_debug_event(hdev, buff);
|
|
snprintf(buff, BUFF_SZ, "\tType: 0x%02x\n",
|
|
raw_data[5]);
|
|
hid_debug_event(hdev, buff);
|
|
break;
|
|
case REPORT_SPLASH_SIZE:
|
|
snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n",
|
|
"REPORT_SPLASH_SIZE", report->id, size-1);
|
|
hid_debug_event(hdev, buff);
|
|
snprintf(buff, BUFF_SZ, "\tTotal splash space: %d\n",
|
|
(raw_data[2] << 8) | raw_data[1]);
|
|
hid_debug_event(hdev, buff);
|
|
snprintf(buff, BUFF_SZ, "\tUsed splash space: %d\n",
|
|
(raw_data[4] << 8) | raw_data[3]);
|
|
hid_debug_event(hdev, buff);
|
|
break;
|
|
case REPORT_HOOK_VERSION:
|
|
snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n",
|
|
"REPORT_HOOK_VERSION", report->id, size-1);
|
|
hid_debug_event(hdev, buff);
|
|
snprintf(buff, BUFF_SZ, "\tFirmware version: %d.%d\n",
|
|
raw_data[1], raw_data[2]);
|
|
hid_debug_event(hdev, buff);
|
|
break;
|
|
default:
|
|
snprintf(buff, BUFF_SZ, "report %s (%d, size=%d)\n",
|
|
"<unknown>", report->id, size-1);
|
|
hid_debug_event(hdev, buff);
|
|
break;
|
|
}
|
|
wake_up_interruptible(&hdev->debug_wait);
|
|
kfree(buff);
|
|
}
|
|
|
|
void picolcd_init_devfs(struct picolcd_data *data,
|
|
struct hid_report *eeprom_r, struct hid_report *eeprom_w,
|
|
struct hid_report *flash_r, struct hid_report *flash_w,
|
|
struct hid_report *reset)
|
|
{
|
|
struct hid_device *hdev = data->hdev;
|
|
|
|
mutex_init(&data->mutex_flash);
|
|
|
|
/* reset */
|
|
if (reset)
|
|
data->debug_reset = debugfs_create_file("reset", 0600,
|
|
hdev->debug_dir, data, &picolcd_debug_reset_fops);
|
|
|
|
/* eeprom */
|
|
if (eeprom_r || eeprom_w)
|
|
data->debug_eeprom = debugfs_create_file("eeprom",
|
|
(eeprom_w ? S_IWUSR : 0) | (eeprom_r ? S_IRUSR : 0),
|
|
hdev->debug_dir, data, &picolcd_debug_eeprom_fops);
|
|
|
|
/* flash */
|
|
if (flash_r && flash_r->maxfield == 1 && flash_r->field[0]->report_size == 8)
|
|
data->addr_sz = flash_r->field[0]->report_count - 1;
|
|
else
|
|
data->addr_sz = -1;
|
|
if (data->addr_sz == 2 || data->addr_sz == 3) {
|
|
data->debug_flash = debugfs_create_file("flash",
|
|
(flash_w ? S_IWUSR : 0) | (flash_r ? S_IRUSR : 0),
|
|
hdev->debug_dir, data, &picolcd_debug_flash_fops);
|
|
} else if (flash_r || flash_w)
|
|
hid_warn(hdev, "Unexpected FLASH access reports, please submit rdesc for review\n");
|
|
}
|
|
|
|
void picolcd_exit_devfs(struct picolcd_data *data)
|
|
{
|
|
struct dentry *dent;
|
|
|
|
dent = data->debug_reset;
|
|
data->debug_reset = NULL;
|
|
debugfs_remove(dent);
|
|
dent = data->debug_eeprom;
|
|
data->debug_eeprom = NULL;
|
|
debugfs_remove(dent);
|
|
dent = data->debug_flash;
|
|
data->debug_flash = NULL;
|
|
debugfs_remove(dent);
|
|
mutex_destroy(&data->mutex_flash);
|
|
}
|
|
|