diff options
Diffstat (limited to 'arch/mips/lasat/picvue_proc.c')
| -rw-r--r-- | arch/mips/lasat/picvue_proc.c | 208 |
1 files changed, 0 insertions, 208 deletions
diff --git a/arch/mips/lasat/picvue_proc.c b/arch/mips/lasat/picvue_proc.c deleted file mode 100644 index 61c033494af5..000000000000 --- a/arch/mips/lasat/picvue_proc.c +++ /dev/null @@ -1,208 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Picvue PVC160206 display driver - * - * Brian Murphy <brian.murphy@eicon.com> - * - */ -#include <linux/bug.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/errno.h> - -#include <linux/proc_fs.h> -#include <linux/seq_file.h> -#include <linux/interrupt.h> - -#include <linux/timer.h> -#include <linux/mutex.h> -#include <linux/uaccess.h> - -#include "picvue.h" - -static DEFINE_MUTEX(pvc_mutex); -static char pvc_lines[PVC_NLINES][PVC_LINELEN+1]; -static int pvc_linedata[PVC_NLINES]; -static char *pvc_linename[PVC_NLINES] = {"line1", "line2"}; -#define DISPLAY_DIR_NAME "display" -static int scroll_dir, scroll_interval; - -static struct timer_list timer; - -static void pvc_display(unsigned long data) -{ - int i; - - pvc_clear(); - for (i = 0; i < PVC_NLINES; i++) - pvc_write_string(pvc_lines[i], 0, i); -} - -static DECLARE_TASKLET(pvc_display_tasklet, &pvc_display, 0); - -static int pvc_line_proc_show(struct seq_file *m, void *v) -{ - int lineno = *(int *)m->private; - - if (lineno < 0 || lineno >= PVC_NLINES) { - printk(KERN_WARNING "proc_read_line: invalid lineno %d\n", lineno); - return 0; - } - - mutex_lock(&pvc_mutex); - seq_printf(m, "%s\n", pvc_lines[lineno]); - mutex_unlock(&pvc_mutex); - - return 0; -} - -static int pvc_line_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, pvc_line_proc_show, PDE_DATA(inode)); -} - -static ssize_t pvc_line_proc_write(struct file *file, const char __user *buf, - size_t count, loff_t *pos) -{ - int lineno = *(int *)PDE_DATA(file_inode(file)); - char kbuf[PVC_LINELEN]; - size_t len; - - BUG_ON(lineno < 0 || lineno >= PVC_NLINES); - - len = min(count, sizeof(kbuf) - 1); - if (copy_from_user(kbuf, buf, len)) - return -EFAULT; - kbuf[len] = '\0'; - - if (len > 0 && kbuf[len - 1] == '\n') - len--; - - mutex_lock(&pvc_mutex); - strncpy(pvc_lines[lineno], kbuf, len); - pvc_lines[lineno][len] = '\0'; - mutex_unlock(&pvc_mutex); - - tasklet_schedule(&pvc_display_tasklet); - - return count; -} - -static const struct proc_ops pvc_line_proc_ops = { - .proc_open = pvc_line_proc_open, - .proc_read = seq_read, - .proc_lseek = seq_lseek, - .proc_release = single_release, - .proc_write = pvc_line_proc_write, -}; - -static ssize_t pvc_scroll_proc_write(struct file *file, const char __user *buf, - size_t count, loff_t *pos) -{ - char kbuf[42]; - size_t len; - int cmd; - - len = min(count, sizeof(kbuf) - 1); - if (copy_from_user(kbuf, buf, len)) - return -EFAULT; - kbuf[len] = '\0'; - - cmd = simple_strtol(kbuf, NULL, 10); - - mutex_lock(&pvc_mutex); - if (scroll_interval != 0) - del_timer(&timer); - - if (cmd == 0) { - scroll_dir = 0; - scroll_interval = 0; - } else { - if (cmd < 0) { - scroll_dir = -1; - scroll_interval = -cmd; - } else { - scroll_dir = 1; - scroll_interval = cmd; - } - add_timer(&timer); - } - mutex_unlock(&pvc_mutex); - - return count; -} - -static int pvc_scroll_proc_show(struct seq_file *m, void *v) -{ - mutex_lock(&pvc_mutex); - seq_printf(m, "%d\n", scroll_dir * scroll_interval); - mutex_unlock(&pvc_mutex); - - return 0; -} - -static int pvc_scroll_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, pvc_scroll_proc_show, NULL); -} - -static const struct proc_ops pvc_scroll_proc_ops = { - .proc_open = pvc_scroll_proc_open, - .proc_read = seq_read, - .proc_lseek = seq_lseek, - .proc_release = single_release, - .proc_write = pvc_scroll_proc_write, -}; - -void pvc_proc_timerfunc(struct timer_list *unused) -{ - if (scroll_dir < 0) - pvc_move(DISPLAY|RIGHT); - else if (scroll_dir > 0) - pvc_move(DISPLAY|LEFT); - - timer.expires = jiffies + scroll_interval; - add_timer(&timer); -} - -static void pvc_proc_cleanup(void) -{ - remove_proc_subtree(DISPLAY_DIR_NAME, NULL); - del_timer_sync(&timer); -} - -static int __init pvc_proc_init(void) -{ - struct proc_dir_entry *dir, *proc_entry; - int i; - - dir = proc_mkdir(DISPLAY_DIR_NAME, NULL); - if (dir == NULL) - goto error; - - for (i = 0; i < PVC_NLINES; i++) { - strcpy(pvc_lines[i], ""); - pvc_linedata[i] = i; - } - for (i = 0; i < PVC_NLINES; i++) { - proc_entry = proc_create_data(pvc_linename[i], 0644, dir, - &pvc_line_proc_ops, &pvc_linedata[i]); - if (proc_entry == NULL) - goto error; - } - proc_entry = proc_create("scroll", 0644, dir, &pvc_scroll_proc_ops); - if (proc_entry == NULL) - goto error; - - timer_setup(&timer, pvc_proc_timerfunc, 0); - - return 0; -error: - pvc_proc_cleanup(); - return -ENOMEM; -} - -module_init(pvc_proc_init); -module_exit(pvc_proc_cleanup); -MODULE_LICENSE("GPL"); |