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Staging: panel: remove ifdefs and code for pre-2.6 kernels
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The code began 8 years ago with kernel 2.0 or 2.1, and kernels 2.2 and
2.4 were still supported. These old version need no longer be supported
if the code gets merged in mainline.

Signed-off-by: Willy Tarreau <w@1wt.eu>
Cc: Frank Menne <frank.menne@hsm.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Willy Tarreau authored and Greg Kroah-Hartman committed Jan 6, 2009
1 parent 698b151 commit f6d1fcf
Showing 1 changed file with 51 additions and 136 deletions.
187 changes: 51 additions & 136 deletions drivers/staging/panel/panel.c
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Original file line number Diff line number Diff line change
Expand Up @@ -228,26 +228,6 @@ static unsigned long int lcd_addr_y; /* contains the LCD Y offset */
static char lcd_escape[LCD_ESCAPE_LEN + 1]; /* current escape sequence, 0 terminated */
static int lcd_escape_len = -1; /* not in escape state. >=0 = escape cmd len */

static int lcd_height = -1;
static int lcd_width = -1;
static int lcd_hwidth = -1; /* hardware buffer width (usually 64) */
static int lcd_bwidth = -1; /* internal buffer width (usually 40) */

/*
* These are the parallel port pins the LCD control signals are connected to.
* Set this to 0 if the signal is not used. Set it to its opposite value
* (negative) if the signal is negated. -MAXINT is used to indicate that the
* pin has not been explicitly specified.
*
* WARNING! no check will be performed about collisions with keypad/smartcard !
*/
static int lcd_e_pin = PIN_NOT_SET;
static int lcd_rs_pin = PIN_NOT_SET;
static int lcd_rw_pin = PIN_NOT_SET;
static int lcd_bl_pin = PIN_NOT_SET;
static int lcd_cl_pin = PIN_NOT_SET;
static int lcd_da_pin = PIN_NOT_SET;

/*
* Bit masks to convert LCD signals to parallel port outputs.
* _d_ are values for data port, _c_ are for control port.
Expand Down Expand Up @@ -431,19 +411,11 @@ static unsigned char lcd_bits[LCD_PORTS][LCD_BITS][BIT_STATES];
static int smartcard_open_cnt; /* #times opened */
static int keypad_open_cnt; /* #times opened */
static int lcd_open_cnt; /* #times opened */

static int profile = DEFAULT_PROFILE;
static struct pardevice *pprt;
static int parport = -1;
static int lcd_enabled = -1;
static int lcd_type = -1;
static int lcd_proto = -1;
static int lcd_charset = -1;
static int keypad_enabled = -1;
static int keypad_type = -1;
static int smartcard_enabled = -1;

static int lcd_initialized, keypad_initialized, smartcard_initialized;
static int lcd_initialized;
static int keypad_initialized;
static int smartcard_initialized;

static int light_tempo;

Expand All @@ -458,61 +430,103 @@ static void (*lcd_clear_fast) (void);
static DEFINE_SPINLOCK(pprt_lock);
static struct timer_list scan_timer;

#ifdef MODULE

MODULE_DESCRIPTION("Generic parallel port LCD/Keypad/Smartcard driver");

static int parport = -1;
module_param(parport, int, 0000);
MODULE_PARM_DESC(parport, "Parallel port index (0=lpt1, 1=lpt2, ...)");

static int lcd_height = -1;
module_param(lcd_height, int, 0000);
MODULE_PARM_DESC(lcd_height, "Number of lines on the LCD");

static int lcd_width = -1;
module_param(lcd_width, int, 0000);
MODULE_PARM_DESC(lcd_width, "Number of columns on the LCD");

static int lcd_bwidth = -1; /* internal buffer width (usually 40) */
module_param(lcd_bwidth, int, 0000);
MODULE_PARM_DESC(lcd_bwidth, "Internal LCD line width (40)");

static int lcd_hwidth = -1; /* hardware buffer width (usually 64) */
module_param(lcd_hwidth, int, 0000);
MODULE_PARM_DESC(lcd_hwidth, "LCD line hardware address (64)");

static int lcd_enabled = -1;
module_param(lcd_enabled, int, 0000);
MODULE_PARM_DESC(lcd_enabled, "Deprecated option, use lcd_type instead");

static int keypad_enabled = -1;
module_param(keypad_enabled, int, 0000);
MODULE_PARM_DESC(keypad_enabled, "Deprecated option, use keypad_type instead");

static int lcd_type = -1;
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");

static int lcd_proto = -1;
module_param(lcd_proto, int, 0000);
MODULE_PARM_DESC(lcd_proto, "LCD communication: 0=parallel (//), 1=serial");

static int lcd_charset = -1;
module_param(lcd_charset, int, 0000);
MODULE_PARM_DESC(lcd_charset, "LCD character set: 0=standard, 1=KS0074");

static int keypad_type = -1;
module_param(keypad_type, int, 0000);
MODULE_PARM_DESC(keypad_type,
"Keypad type: 0=none, 1=old 6 keys, 2=new 6+1 keys, 3=nexcom 4 keys");

static int smartcard_enabled = -1;
module_param(smartcard_enabled, int, 0000);
MODULE_PARM_DESC(smartcard_enabled,
"Smartcard reader: 0=disabled (default), 1=enabled");

static int profile = DEFAULT_PROFILE;
module_param(profile, int, 0000);
MODULE_PARM_DESC(profile,
"1=16x2 old kp; 2=serial 16x2, new kp; 3=16x2 hantronix; 4=16x2 nexcom; default=40x2, old kp");

/*
* These are the parallel port pins the LCD control signals are connected to.
* Set this to 0 if the signal is not used. Set it to its opposite value
* (negative) if the signal is negated. -MAXINT is used to indicate that the
* pin has not been explicitly specified.
*
* WARNING! no check will be performed about collisions with keypad/smartcard !
*/

static int lcd_e_pin = PIN_NOT_SET;
module_param(lcd_e_pin, int, 0000);
MODULE_PARM_DESC(lcd_e_pin,
"# of the // port pin connected to LCD 'E' signal, with polarity (-17..17)");

static int lcd_rs_pin = PIN_NOT_SET;
module_param(lcd_rs_pin, int, 0000);
MODULE_PARM_DESC(lcd_rs_pin,
"# of the // port pin connected to LCD 'RS' signal, with polarity (-17..17)");

static int lcd_rw_pin = PIN_NOT_SET;
module_param(lcd_rw_pin, int, 0000);
MODULE_PARM_DESC(lcd_rw_pin,
"# of the // port pin connected to LCD 'RW' signal, with polarity (-17..17)");

static int lcd_bl_pin = PIN_NOT_SET;
module_param(lcd_bl_pin, int, 0000);
MODULE_PARM_DESC(lcd_bl_pin,
"# of the // port pin connected to LCD backlight, with polarity (-17..17)");

static int lcd_da_pin = PIN_NOT_SET;
module_param(lcd_da_pin, int, 0000);
MODULE_PARM_DESC(lcd_da_pin,
"# of the // port pin connected to serial LCD 'SDA' signal, with polarity (-17..17)");

static int lcd_cl_pin = PIN_NOT_SET;
module_param(lcd_cl_pin, int, 0000);
MODULE_PARM_DESC(lcd_cl_pin,
"# of the // port pin connected to serial LCD 'SCL' signal, with polarity (-17..17)");

#endif

static unsigned char *lcd_char_conv;

/* for some LCD drivers (ks0074) we need a charset conversion table. */
Expand Down Expand Up @@ -2091,101 +2105,6 @@ static void smartcard_init(void)
/* device initialization */
/**************************************************/

#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
#define INIT_FUNC static int __init panel_init_module
#define CLEANUP_FUNC static void __exit panel_cleanup_module
#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
#define INIT_FUNC static int __init panel_init_module
#define CLEANUP_FUNC static void panel_cleanup_module
#else
#define INIT_FUNC int init_module
#define CLEANUP_FUNC int cleanup_module
#endif

#ifndef MODULE
/* called when compiled into the kernel */
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
static int __init panel_setup(char *str)
#else
__initfunc(void panel_setup(char *str, int *ints))
#endif
{
int dummy;
int *where;
int helpdisplayed = 0;

if (!str)
return 0;

while (*str) {
where = NULL;

/* let's parse each of the command line parameters of the following form :
panel=[parport:x],[lcd_height:x],[lcd_width:x],[lcd_bwidth:x],[lcd_hwidth:x]
*/
if (!strncmp(str, "parport:", 8)) {
str += 8;
where = &parport;
} else if (!strncmp(str, "disabled", 8)) {
return 0;
} else if (!strncmp(str, "lcd_height:", 11)) {
str += 11;
where = &lcd_height;
} else if (!strncmp(str, "lcd_width:", 10)) {
str += 10;
where = &lcd_width;
} else if (!strncmp(str, "lcd_bwidth:", 11)) {
str += 11;
where = &lcd_bwidth;
} else if (!strncmp(str, "lcd_hwidth:", 11)) {
str += 11;
where = &lcd_hwidth;
} else if (!strncmp(str, "lcd_enabled:", 12)) {
str += 12;
where = &lcd_enabled;
} else if (!strncmp(str, "keypad_enabled:", 15)) {
str += 15;
where = &keypad_enabled;
} else if (!strncmp(str, "smartcard_enabled:", 18)) {
str += 18;
where = &smartcard_enabled;
} else if (!strncmp(str, "profile:", 8)) {
str += 8;
where = &profile;
} else if (!helpdisplayed) {
helpdisplayed = 1;
printk(KERN_ERR "Panel version " PANEL_VERSION
": invalid argument. Known arguments are :\n"
" parport:, lcd_{height,width,bwidth,enabled}:, keypad_enabled:\n");
}

/* see if we need to read a number */
if (where != NULL) {
dummy = 0;
while (isdigit(*str)) {
dummy = (dummy * 10) + (*str - '0');
str++;
}
*where = dummy;
}

/* look for next arg */
while (*str && (*str != ','))
str++;
while (*str == ',')
str++;
}
return 1;
}

#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
__setup("panel=", panel_setup);
#else
__setup("panel", panel_setup);
#endif

#endif /* !MODULE */

static int panel_notify_sys(struct notifier_block *this, unsigned long code,
void *unused)
{
Expand Down Expand Up @@ -2409,13 +2328,12 @@ int panel_init(void)
return 0;
}

#if defined(MODULE) || (LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0))
INIT_FUNC(void)
static int __init panel_init_module(void)
{
return panel_init();
}

CLEANUP_FUNC(void)
static void __exit panel_cleanup_module(void)
{
unregister_reboot_notifier(&panel_notifier);

Expand All @@ -2440,14 +2358,11 @@ CLEANUP_FUNC(void)
parport_unregister_device(pprt);
parport_unregister_driver(&panel_driver);
}
#endif

#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
module_init(panel_init_module);
module_exit(panel_cleanup_module);
MODULE_AUTHOR("Willy Tarreau");
MODULE_LICENSE("GPL");
#endif

/*
* Local variables:
Expand Down

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