diff options
Diffstat (limited to 'drivers/staging/panel/panel.c')
| -rw-r--r-- | drivers/staging/panel/panel.c | 94 |
1 files changed, 39 insertions, 55 deletions
diff --git a/drivers/staging/panel/panel.c b/drivers/staging/panel/panel.c index 6ed35b6ecf0d..ea54fb4ec837 100644 --- a/drivers/staging/panel/panel.c +++ b/drivers/staging/panel/panel.c @@ -335,11 +335,11 @@ static unsigned char lcd_bits[LCD_PORTS][LCD_BITS][BIT_STATES]; * LCD types */ #define LCD_TYPE_NONE 0 -#define LCD_TYPE_OLD 1 -#define LCD_TYPE_KS0074 2 -#define LCD_TYPE_HANTRONIX 3 -#define LCD_TYPE_NEXCOM 4 -#define LCD_TYPE_CUSTOM 5 +#define LCD_TYPE_CUSTOM 1 +#define LCD_TYPE_OLD 2 +#define LCD_TYPE_KS0074 3 +#define LCD_TYPE_HANTRONIX 4 +#define LCD_TYPE_NEXCOM 5 /* * keypad types @@ -473,8 +473,6 @@ static struct pardevice *pprt; static int keypad_initialized; -static char init_in_progress; - static void (*lcd_write_cmd)(int); static void (*lcd_write_data)(int); static void (*lcd_clear_fast)(void); @@ -502,7 +500,7 @@ MODULE_PARM_DESC(keypad_type, static int lcd_type = NOT_SET; module_param(lcd_type, int, 0000); MODULE_PARM_DESC(lcd_type, - "LCD type: 0=none, 1=old //, 2=serial ks0074, 3=hantronix //, 4=nexcom //, 5=compiled-in"); + "LCD type: 0=none, 1=compiled-in, 2=old, 3=serial ks0074, 4=hantronix, 5=nexcom"); static int lcd_height = NOT_SET; module_param(lcd_height, int, 0000); @@ -1718,9 +1716,6 @@ static struct miscdevice keypad_dev = { static void keypad_send_key(const char *string, int max_len) { - if (init_in_progress) - return; - /* send the key to the device only if a process is attached to it. */ if (!atomic_read(&keypad_available)) { while (max_len-- && keypad_buflen < KEYPAD_BUFFER && *string) { @@ -2010,10 +2005,8 @@ static void init_scan_timer(void) if (scan_timer.function != NULL) return; /* already started */ - init_timer(&scan_timer); + setup_timer(&scan_timer, (void *)&panel_scan_timer, 0); scan_timer.expires = jiffies + INPUT_POLL_TIME; - scan_timer.data = 0; - scan_timer.function = (void *)&panel_scan_timer; add_timer(&scan_timer); } @@ -2236,6 +2229,7 @@ static void panel_attach(struct parport *port) if (misc_register(&keypad_dev)) goto err_lcd_unreg; } + register_reboot_notifier(&panel_notifier); return; err_lcd_unreg: @@ -2257,6 +2251,8 @@ static void panel_detach(struct parport *port) return; } + unregister_reboot_notifier(&panel_notifier); + if (keypad.enabled && keypad_initialized) { misc_deregister(&keypad_dev); keypad_initialized = 0; @@ -2281,7 +2277,7 @@ static struct parport_driver panel_driver = { /* init function */ static int __init panel_init_module(void) { - int selected_keypad_type = NOT_SET; + int selected_keypad_type = NOT_SET, err; /* take care of an eventual profile */ switch (profile) { @@ -2324,26 +2320,6 @@ static int __init panel_init_module(void) } /* - * Init lcd struct with load-time values to preserve exact current - * functionality (at least for now). - */ - lcd.height = lcd_height; - lcd.width = lcd_width; - lcd.bwidth = lcd_bwidth; - lcd.hwidth = lcd_hwidth; - lcd.charset = lcd_charset; - lcd.proto = lcd_proto; - lcd.pins.e = lcd_e_pin; - lcd.pins.rs = lcd_rs_pin; - lcd.pins.rw = lcd_rw_pin; - lcd.pins.cl = lcd_cl_pin; - lcd.pins.da = lcd_da_pin; - lcd.pins.bl = lcd_bl_pin; - - /* Leave it for now, just in case */ - lcd.esc_seq.len = -1; - - /* * Overwrite selection with module param values (both keypad and lcd), * where the deprecated params have lower prio. */ @@ -2361,6 +2337,28 @@ static int __init panel_init_module(void) lcd.enabled = (selected_lcd_type > 0); + if (lcd.enabled) { + /* + * Init lcd struct with load-time values to preserve exact + * current functionality (at least for now). + */ + lcd.height = lcd_height; + lcd.width = lcd_width; + lcd.bwidth = lcd_bwidth; + lcd.hwidth = lcd_hwidth; + lcd.charset = lcd_charset; + lcd.proto = lcd_proto; + lcd.pins.e = lcd_e_pin; + lcd.pins.rs = lcd_rs_pin; + lcd.pins.rw = lcd_rw_pin; + lcd.pins.cl = lcd_cl_pin; + lcd.pins.da = lcd_da_pin; + lcd.pins.bl = lcd_bl_pin; + + /* Leave it for now, just in case */ + lcd.esc_seq.len = -1; + } + switch (selected_keypad_type) { case KEYPAD_TYPE_OLD: keypad_profile = old_keypad_profile; @@ -2376,27 +2374,17 @@ static int __init panel_init_module(void) break; } - /* tells various subsystems about the fact that we are initializing */ - init_in_progress = 1; - - if (parport_register_driver(&panel_driver)) { - pr_err("could not register with parport. Aborting.\n"); - return -EIO; - } - if (!lcd.enabled && !keypad.enabled) { - /* no device enabled, let's release the parport */ - if (pprt) { - parport_release(pprt); - parport_unregister_device(pprt); - pprt = NULL; - } - parport_unregister_driver(&panel_driver); + /* no device enabled, let's exit */ pr_err("driver version " PANEL_VERSION " disabled.\n"); return -ENODEV; } - register_reboot_notifier(&panel_notifier); + err = parport_register_driver(&panel_driver); + if (err) { + pr_err("could not register with parport. Aborting.\n"); + return err; + } if (pprt) pr_info("driver version " PANEL_VERSION @@ -2405,15 +2393,11 @@ static int __init panel_init_module(void) else pr_info("driver version " PANEL_VERSION " not yet registered\n"); - /* tells various subsystems about the fact that initialization - is finished */ - init_in_progress = 0; return 0; } static void __exit panel_cleanup_module(void) { - unregister_reboot_notifier(&panel_notifier); if (scan_timer.function != NULL) del_timer_sync(&scan_timer); |