diff options
| -rw-r--r-- | drivers/staging/panel/panel.c | 1045 |
1 files changed, 572 insertions, 473 deletions
diff --git a/drivers/staging/panel/panel.c b/drivers/staging/panel/panel.c index 9ca0e9e..3154ffe 100644 --- a/drivers/staging/panel/panel.c +++ b/drivers/staging/panel/panel.c @@ -68,11 +68,16 @@ #define LCD_MAXBYTES 256 /* max burst write */ #define KEYPAD_BUFFER 64 -#define INPUT_POLL_TIME (HZ/50) /* poll the keyboard this every second */ -#define KEYPAD_REP_START (10) /* a key starts to repeat after this times INPUT_POLL_TIME */ -#define KEYPAD_REP_DELAY (2) /* a key repeats this times INPUT_POLL_TIME */ -#define FLASH_LIGHT_TEMPO (200) /* keep the light on this times INPUT_POLL_TIME for each flash */ +/* poll the keyboard this every second */ +#define INPUT_POLL_TIME (HZ/50) +/* a key starts to repeat after this times INPUT_POLL_TIME */ +#define KEYPAD_REP_START (10) +/* a key repeats this times INPUT_POLL_TIME */ +#define KEYPAD_REP_DELAY (2) + +/* keep the light on this times INPUT_POLL_TIME for each flash */ +#define FLASH_LIGHT_TEMPO (200) /* converts an r_str() input to an active high, bits string : 000BAOSE */ #define PNL_PINPUT(a) ((((unsigned char)(a)) ^ 0x7F) >> 3) @@ -84,7 +89,8 @@ #define PNL_PERRORP 0x08 /* direct input, active low */ #define PNL_PBIDIR 0x20 /* bi-directional ports */ -#define PNL_PINTEN 0x10 /* high to read data in or-ed with data out */ +/* high to read data in or-ed with data out */ +#define PNL_PINTEN 0x10 #define PNL_PSELECP 0x08 /* inverted output, active low */ #define PNL_PINITP 0x04 /* direct output, active low */ #define PNL_PAUTOLF 0x02 /* inverted output, active low */ @@ -123,7 +129,7 @@ #define LCD_FLAG_N 0x0040 /* 2-rows mode */ #define LCD_FLAG_L 0x0080 /* backlight enabled */ -#define LCD_ESCAPE_LEN 24 /* 24 chars max for an LCD escape command */ +#define LCD_ESCAPE_LEN 24 /* max chars for LCD escape command */ #define LCD_ESCAPE_CHAR 27 /* use char 27 for escape command */ /* macros to simplify use of the parallel port */ @@ -134,8 +140,10 @@ #define w_dtr(x, y) do { parport_write_data((x)->port, (y)); } while (0) /* this defines which bits are to be used and which ones to be ignored */ -static __u8 scan_mask_o; /* logical or of the output bits involved in the scan matrix */ -static __u8 scan_mask_i; /* logical or of the input bits involved in the scan matrix */ +/* logical or of the output bits involved in the scan matrix */ +static __u8 scan_mask_o; +/* logical or of the input bits involved in the scan matrix */ +static __u8 scan_mask_i; typedef __u64 pmask_t; @@ -161,14 +169,14 @@ struct logical_input { __u8 rise_timer, fall_timer, high_timer; union { - struct { /* this structure is valid when type == INPUT_TYPE_STD */ + struct { /* valid when type == INPUT_TYPE_STD */ void (*press_fct) (int); void (*release_fct) (int); int press_data; int release_data; } std; - struct { /* this structure is valid when type == INPUT_TYPE_KBD */ - /* strings can be full-length (ie. non null-terminated) */ + struct { /* valid when type == INPUT_TYPE_KBD */ + /* strings can be non null-terminated */ char press_str[sizeof(void *) + sizeof(int)]; char repeat_str[sizeof(void *) + sizeof(int)]; char release_str[sizeof(void *) + sizeof(int)]; @@ -188,11 +196,17 @@ LIST_HEAD(logical_inputs); /* list of all defined logical inputs */ * 0000000000000000000BAPSEBAPSEBAPSEBAPSEBAPSEBAPSEBAPSEBAPSEBAPSE * <-----unused------><gnd><d07><d06><d05><d04><d03><d02><d01><d00> */ -static pmask_t phys_read; /* what has just been read from the I/O ports */ -static pmask_t phys_read_prev; /* previous phys_read */ -static pmask_t phys_curr; /* stabilized phys_read (phys_read|phys_read_prev) */ -static pmask_t phys_prev; /* previous phys_curr */ -static char inputs_stable; /* 0 means that at least one logical signal needs be computed */ + +/* what has just been read from the I/O ports */ +static pmask_t phys_read; +/* previous phys_read */ +static pmask_t phys_read_prev; +/* stabilized phys_read (phys_read|phys_read_prev) */ +static pmask_t phys_curr; +/* previous phys_curr */ +static pmask_t phys_prev; +/* 0 means that at least one logical signal needs be computed */ +static char inputs_stable; /* these variables are specific to the keypad */ static char keypad_buffer[KEYPAD_BUFFER]; @@ -202,11 +216,17 @@ static char keypressed; static wait_queue_head_t keypad_read_wait; /* lcd-specific variables */ -static unsigned long int lcd_flags; /* contains the LCD config state */ -static unsigned long int lcd_addr_x; /* contains the LCD X offset */ -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 */ + +/* contains the LCD config state */ +static unsigned long int lcd_flags; +/* contains the LCD X offset */ +static unsigned long int lcd_addr_x; +/* contains the LCD Y offset */ +static unsigned long int lcd_addr_y; +/* current escape sequence, 0 terminated */ +static char lcd_escape[LCD_ESCAPE_LEN + 1]; +/* not in escape state. >=0 = escape cmd len */ +static int lcd_escape_len = -1; /* * Bit masks to convert LCD signals to parallel port outputs. @@ -436,11 +456,13 @@ 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"); + "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," +MODULE_PARM_DESC(lcd_proto, + "LCD communication: 0=parallel (//), 1=serial," "2=TI LCD Interface"); static int lcd_charset = -1; @@ -450,12 +472,14 @@ 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"); + "Keypad type: 0=none, 1=old 6 keys, 2=new 6+1 keys, " + "3=nexcom 4 keys"); 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"); + "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. @@ -469,32 +493,38 @@ MODULE_PARM_DESC(profile, 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)"); + "# 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)"); + "# 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)"); + "# 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)"); + "# 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)"); + "# 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)"); + "# of the // port pin connected to serial LCD 'SCL' " + "signal, with polarity (-17..17)"); static unsigned char *lcd_char_conv; @@ -572,12 +602,12 @@ static char (*keypad_profile)[4][9] = old_keypad_profile; /* FIXME: this should be converted to a bit array containing signals states */ static struct { - unsigned char e; /* parallel LCD E (data latch on falling edge) */ - unsigned char rs; /* parallel LCD RS (0 = cmd, 1 = data) */ - unsigned char rw; /* parallel LCD R/W (0 = W, 1 = R) */ - unsigned char bl; /* parallel LCD backlight (0 = off, 1 = on) */ - unsigned char cl; /* serial LCD clock (latch on rising edge) */ - unsigned char da; /* serial LCD data */ + unsigned char e; /* parallel LCD E (data latch on falling edge) */ + unsigned char rs; /* parallel LCD RS (0 = cmd, 1 = data) */ + unsigned char rw; /* parallel LCD R/W (0 = W, 1 = R) */ + unsigned char bl; /* parallel LCD backlight (0 = off, 1 = on) */ + unsigned char cl; /* serial LCD clock (latch on rising edge) */ + unsigned char da; /* serial LCD data */ } bits; static void init_scan_timer(void); @@ -666,7 +696,7 @@ void pin_to_bits(int pin, unsigned char *d_val, unsigned char *c_val) c_bit = PNL_PAUTOLF; inv = !inv; break; - case PIN_INITP: /* init, direct */ + case PIN_INITP: /* init, direct */ c_bit = PNL_PINITP; break; case PIN_SELECP: /* select_in, inverted */ @@ -698,23 +728,23 @@ static void long_sleep(int ms) } } -/* send a serial byte to the LCD panel. The caller is responsible for locking if needed. */ +/* send a serial byte to the LCD panel. The caller is responsible for locking + if needed. */ static void lcd_send_serial(int byte) { int bit; /* the data bit is set on D0, and the clock on STROBE. - * LCD reads D0 on STROBE's rising edge. - */ + * LCD reads D0 on STROBE's rising edge. */ for (bit = 0; bit < 8; bit++) { bits.cl = BIT_CLR; /* CLK low */ panel_set_bits(); bits.da = byte & 1; panel_set_bits(); - udelay(2); /* maintain the data during 2 us before CLK up */ + udelay(2); /* maintain the data during 2 us before CLK up */ bits.cl = BIT_SET; /* CLK high */ panel_set_bits(); - udelay(1); /* maintain the strobe during 1 us */ + udelay(1); /* maintain the strobe during 1 us */ byte >>= 1; } } @@ -760,19 +790,19 @@ static void lcd_write_cmd_p8(int cmd) spin_lock(&pprt_lock); /* present the data to the data port */ w_dtr(pprt, cmd); - udelay(20); /* maintain the data during 20 us before the strobe */ + udelay(20); /* maintain the data during 20 us before the strobe */ bits.e = BIT_SET; bits.rs = BIT_CLR; bits.rw = BIT_CLR; set_ctrl_bits(); - udelay(40); /* maintain the strobe during 40 us */ + udelay(40); /* maintain the strobe during 40 us */ bits.e = BIT_CLR; set_ctrl_bits(); - udelay(120); /* the shortest command takes at least 120 us */ + udelay(120); /* the shortest command takes at least 120 us */ spin_unlock(&pprt_lock); } @@ -782,19 +812,19 @@ static void lcd_write_data_p8(int data) spin_lock(&pprt_lock); /* present the data to the data port */ w_dtr(pprt, data); - udelay(20); /* maintain the data during 20 us before the strobe */ + udelay(20); /* maintain the data during 20 us before the strobe */ bits.e = BIT_SET; bits.rs = BIT_SET; bits.rw = BIT_CLR; set_ctrl_bits(); - udelay(40); /* maintain the strobe during 40 us */ + udelay(40); /* maintain the strobe during 40 us */ bits.e = BIT_CLR; set_ctrl_bits(); - udelay(45); /* the shortest data takes at least 45 us */ + udelay(45); /* the shortest data takes at least 45 us */ spin_unlock(&pprt_lock); } @@ -822,7 +852,8 @@ static void lcd_gotoxy(void) { lcd_write_cmd(0x80 /* set DDRAM address */ | (lcd_addr_y ? lcd_hwidth : 0) - /* we force the cursor to stay at the end of the line if it wants to go farther */ + /* we force the cursor to stay at the end of the + line if it wants to go farther */ | ((lcd_addr_x < lcd_bwidth) ? lcd_addr_x & (lcd_hwidth - 1) : lcd_bwidth - 1)); } @@ -871,19 +902,23 @@ static void lcd_clear_fast_p8(void) for (pos = 0; pos < lcd_height * lcd_hwidth; pos++) { /* present the data to the data port */ w_dtr(pprt, ' '); - udelay(20); /* maintain the data during 20 us before the strobe */ + + /* maintain the data during 20 us before the strobe */ + udelay(20); bits.e = BIT_SET; bits.rs = BIT_SET; bits.rw = BIT_CLR; set_ctrl_bits(); - udelay(40); /* maintain the strobe during 40 us */ + /* maintain the strobe during 40 us */ + udelay(40); bits.e = BIT_CLR; set_ctrl_bits(); - udelay(45); /* the shortest data takes at least 45 us */ + /* the shortest data takes at least 45 us */ + udelay(45); } spin_unlock(&pprt_lock); @@ -954,7 +989,8 @@ static void lcd_init_display(void) long_sleep(10); - lcd_write_cmd(0x06); /* entry mode set : increment, cursor shifting */ + /* entry mode set : increment, cursor shifting */ + lcd_write_cmd(0x06); lcd_clear_display(); } @@ -966,317 +1002,342 @@ static void lcd_init_display(void) * */ +static inline int handle_lcd_special_code(void) +{ + /* LCD special codes */ + + int processed = 0; + + char *esc = lcd_escape + 2; + int oldflags = lcd_flags; + + /* check for display mode flags */ + switch (*esc) { + case 'D': /* Display ON */ + lcd_flags |= LCD_FLAG_D; + processed = 1; + break; + case 'd': /* Display OFF */ + lcd_flags &= ~LCD_FLAG_D; + processed = 1; + break; + case 'C': /* Cursor ON */ + lcd_flags |= LCD_FLAG_C; + processed = 1; + break; + case 'c': /* Cursor OFF */ + lcd_flags &= ~LCD_FLAG_C; + processed = 1; + break; + case 'B': /* Blink ON */ + lcd_flags |= LCD_FLAG_B; + processed = 1; + break; + case 'b': /* Blink OFF */ + lcd_flags &= ~LCD_FLAG_B; + processed = 1; + break; + case '+': /* Back light ON */ + lcd_flags |= LCD_FLAG_L; + processed = 1; + break; + case '-': /* Back light OFF */ + lcd_flags &= ~LCD_FLAG_L; + processed = 1; + break; + case '*': + /* flash back light using the keypad timer */ + if (scan_timer.function != NULL) { + if (light_tempo == 0 && ((lcd_flags & LCD_FLAG_L) == 0)) + lcd_backlight(1); + light_tempo = FLASH_LIGHT_TEMPO; + } + processed = 1; + break; + case 'f': /* Small Font */ + lcd_flags &= ~LCD_FLAG_F; + processed = 1; + break; + case 'F': /* Large Font */ + lcd_flags |= LCD_FLAG_F; + processed = 1; + break; + case 'n': /* One Line */ + lcd_flags &= ~LCD_FLAG_N; + processed = 1; + break; + case 'N': /* Two Lines */ + lcd_flags |= LCD_FLAG_N; + break; + case 'l': /* Shift Cursor Left */ + if (lcd_addr_x > 0) { + /* back one char if not at end of line */ + if (lcd_addr_x < lcd_bwidth) + lcd_write_cmd(0x10); + lcd_addr_x--; + } + processed = 1; + break; + case 'r': /* shift cursor right */ + if (lcd_addr_x < lcd_width) { + /* allow the cursor to pass the end of the line */ + if (lcd_addr_x < + (lcd_bwidth - 1)) + lcd_write_cmd(0x14); + lcd_addr_x++; + } + processed = 1; + break; + case 'L': /* shift display left */ + lcd_left_shift++; + lcd_write_cmd(0x18); + processed = 1; + break; + case 'R': /* shift display right */ + lcd_left_shift--; + lcd_write_cmd(0x1C); + processed = 1; + break; + case 'k': { /* kill end of line */ + int x; + for (x = lcd_addr_x; x < lcd_bwidth; x++) + lcd_write_data(' '); + + /* restore cursor position */ + lcd_gotoxy(); + processed = 1; + break; + } + case 'I': /* reinitialize display */ + lcd_init_display(); + lcd_left_shift = 0; + processed = 1; + break; + case 'G': { + /* Generator : LGcxxxxx...xx; must have <c> between '0' + * and '7', representing the numerical ASCII code of the + * redefined character, and <xx...xx> a sequence of 16 + * hex digits representing 8 bytes for each character. + * Most LCDs will only use 5 lower bits of the 7 first + * bytes. + */ + + unsigned char cgbytes[8]; + unsigned char cgaddr; + int cgoffset; + int shift; + char value; + int addr; + + if (strchr(esc, ';') == NULL) + break; + + esc++; + + cgaddr = *(esc++) - '0'; + if (cgaddr > 7) { + processed = 1; + break; + } + + cgoffset = 0; + shift = 0; + value = 0; + while (*esc && cgoffset < 8) { + shift ^= 4; + if (*esc >= '0' && *esc <= '9') + value |= (*esc - '0') << shift; + else if (*esc >= 'A' && *esc <= 'Z') + value |= (*esc - 'A' + 10) << shift; + else if (*esc >= 'a' && *esc <= 'z') + value |= (*esc - 'a' + 10) << shift; + else { + esc++; + continue; + } + + if (shift == 0) { + cgbytes[cgoffset++] = value; + value = 0; + } + + esc++; + } + + lcd_write_cmd(0x40 | (cgaddr * 8)); + for (addr = 0; addr < cgoffset; addr++) + lcd_write_data(cgbytes[addr]); + + /* ensures that we stop writing to CGRAM */ + lcd_gotoxy(); + processed = 1; + break; + } + case 'x': /* gotoxy : LxXXX[yYYY]; */ + case 'y': /* gotoxy : LyYYY[xXXX]; */ + if (strchr(esc, ';') == NULL) + break; + + while (*esc) { + if (*esc == 'x') { + esc++; + lcd_addr_x = 0; + while (isdigit(*esc)) { + lcd_addr_x = lcd_addr_x * 10 + + (*esc - '0'); + esc++; + } + } else if (*esc == 'y') { + esc++; + lcd_addr_y = 0; + while (isdigit(*esc)) { + lcd_addr_y = lcd_addr_y * 10 + + (*esc - '0'); + esc++; + } + } else + break; + } + + lcd_gotoxy(); + processed = 1; + break; + } + + /* Check wether one flag was changed */ + if (oldflags != lcd_flags) { + /* check whether one of B,C,D flags were changed */ + if ((oldflags ^ lcd_flags) & + (LCD_FLAG_B | LCD_FLAG_C | LCD_FLAG_D)) + /* set display mode */ + lcd_write_cmd(0x08 + | ((lcd_flags & LCD_FLAG_D) ? 4 : 0) + | ((lcd_flags & LCD_FLAG_C) ? 2 : 0) + | ((lcd_flags & LCD_FLAG_B) ? 1 : 0)); + /* check whether one of F,N flags was changed */ + else if ((oldflags ^ lcd_flags) & (LCD_FLAG_F | LCD_FLAG_N)) + lcd_write_cmd(0x30 + | ((lcd_flags & LCD_FLAG_F) ? 4 : 0) + | ((lcd_flags & LCD_FLAG_N) ? 8 : 0)); + /* check wether L flag was changed */ + else if ((oldflags ^ lcd_flags) & (LCD_FLAG_L)) { + if (lcd_flags & (LCD_FLAG_L)) + lcd_backlight(1); + else if (light_tempo == 0) + /* switch off the light only when the tempo + lighting is gone */ + lcd_backlight(0); + } + } + + return processed; +} + static ssize_t lcd_write(struct file *file, const char *buf, size_t count, loff_t *ppos) { - const char *tmp = buf; char c; for (; count-- > 0; (ppos ? (*ppos)++ : 0), ++tmp) { if (!in_interrupt() && (((count + 1) & 0x1f) == 0)) - schedule(); /* let's be a little nice with other processes that need some CPU */ + /* let's be a little nice with other processes + that need some CPU */ + schedule(); if (ppos == NULL && file == NULL) - c = *tmp; /* let's not use get_user() from the kernel ! */ + /* let's not use get_user() from the kernel ! */ + c = *tmp; else if (get_user(c, tmp)) return -EFAULT; /* first, we'll test if we're in escape mode */ - if ((c != '\n') && lcd_escape_len >= 0) { /* yes, let's add this char to the buffer */ + if ((c != '\n') && lcd_escape_len >= 0) { + /* yes, let's add this char to the buffer */ lcd_escape[lcd_escape_len++] = c; lcd_escape[lcd_escape_len] = 0; } else { - lcd_escape_len = -1; /* aborts any previous escape sequence */ + /* aborts any previous escape sequence */ + lcd_escape_len = -1; switch (c) { - case LCD_ESCAPE_CHAR: /* start of an escape sequence */ + case LCD_ESCAPE_CHAR: + /* start of an escape sequence */ lcd_escape_len = 0; lcd_escape[lcd_escape_len] = 0; break; - case '\b': /* go back one char and clear it */ + case '\b': + /* go back one char and clear it */ if (lcd_addr_x > 0) { - if (lcd_addr_x < lcd_bwidth) /* check if we're not at the end of the line */ - lcd_write_cmd(0x10); /* back one char */ + /* check if we're not at the + end of the line */ + if (lcd_addr_x < lcd_bwidth) + /* back one char */ + lcd_write_cmd(0x10); lcd_addr_x--; } - lcd_write_data(' '); /* replace with a space */ - lcd_write_cmd(0x10); /* back one char again */ + /* replace with a space */ + lcd_write_data(' '); + /* back one char again */ + lcd_write_cmd(0x10); break; - case '\014': /* quickly clear the display */ + case '\014': + /* quickly clear the display */ lcd_clear_fast(); break; - case '\n': /* flush the remainder of the current line and go to the - beginning of the next line */ + case '\n': + /* flush the remainder of the current line and + go to the beginning of the next line */ for (; lcd_addr_x < lcd_bwidth; lcd_addr_x++) lcd_write_data(' '); lcd_addr_x = 0; lcd_addr_y = (lcd_addr_y + 1) % lcd_height; lcd_gotoxy(); break; - case '\r': /* go to the beginning of the same line */ + case '\r': + /* go to the beginning of the same line */ lcd_addr_x = 0; lcd_gotoxy(); break; - case '\t': /* print a space instead of the tab */ + case '\t': + /* print a space instead of the tab */ lcd_print(' '); break; - default: /* simply print this char */ + default: + /* simply print this char */ lcd_print(c); break; } } /* now we'll see if we're in an escape mode and if the current - escape sequence can be understood. - */ - if (lcd_escape_len >= 2) { /* minimal length for an escape command */ - int processed = 0; /* 1 means the command has been processed */ + escape sequence can be understood. */ + if (lcd_escape_len >= 2) { + int processed = 0; - if (!strcmp(lcd_escape, "[2J")) { /* Clear the display */ - lcd_clear_fast(); /* clear display */ + if (!strcmp(lcd_escape, "[2J")) { + /* clear the display */ + lcd_clear_fast(); processed = 1; - } else if (!strcmp(lcd_escape, "[H")) { /* Cursor to home */ + } else if (!strcmp(lcd_escape, "[H")) { + /* cursor to home */ lcd_addr_x = lcd_addr_y = 0; lcd_gotoxy(); processed = 1; } /* codes starting with ^[[L */ else if ((lcd_escape_len >= 3) && - (lcd_escape[0] == '[') && (lcd_escape[1] == 'L')) { /* LCD special codes */ - - char *esc = lcd_escape + 2; - int oldflags = lcd_flags; - - /* check for display mode flags */ - switch (*esc) { - case 'D': /* Display ON */ - lcd_flags |= LCD_FLAG_D; - processed = 1; - break; - case 'd': /* Display OFF */ - lcd_flags &= ~LCD_FLAG_D; - processed = 1; - break; - case 'C': /* Cursor ON */ - lcd_flags |= LCD_FLAG_C; - processed = 1; - break; - case 'c': /* Cursor OFF */ - lcd_flags &= ~LCD_FLAG_C; - processed = 1; - break; - case 'B': /* Blink ON */ - lcd_flags |= LCD_FLAG_B; - processed = 1; - break; - case 'b': /* Blink OFF */ - lcd_flags &= ~LCD_FLAG_B; - processed = 1; - break; - case '+': /* Back light ON */ - lcd_flags |= LCD_FLAG_L; - processed = 1; - break; - case '-': /* Back light OFF */ - lcd_flags &= ~LCD_FLAG_L; - processed = 1; - break; - case '*': /* flash back light using the keypad timer */ - if (scan_timer.function != NULL) { - if (light_tempo == 0 - && ((lcd_flags & LCD_FLAG_L) - == 0)) - lcd_backlight(1); - light_tempo = FLASH_LIGHT_TEMPO; - } - processed = 1; - break; - case 'f': /* Small Font */ - lcd_flags &= ~LCD_FLAG_F; - processed = 1; - break; - case 'F': /* Large Font */ - lcd_flags |= LCD_FLAG_F; - processed = 1; - break; - case 'n': /* One Line */ - lcd_flags &= ~LCD_FLAG_N; - processed = 1; - break; - case 'N': /* Two Lines */ - lcd_flags |= LCD_FLAG_N; - break; - - case 'l': /* Shift Cursor Left */ - if (lcd_addr_x > 0) { - if (lcd_addr_x < lcd_bwidth) - lcd_write_cmd(0x10); /* back one char if not at end of line */ - lcd_addr_x--; - } - processed = 1; - break; - - case 'r': /* shift cursor right */ - if (lcd_addr_x < lcd_width) { - if (lcd_addr_x < (lcd_bwidth - 1)) - lcd_write_cmd(0x14); /* allow the cursor to pass the end of the line */ - lcd_addr_x++; - } - processed = 1; - break; - - case 'L': /* shift display left */ - lcd_left_shift++; - lcd_write_cmd(0x18); - processed = 1; - break; - - case 'R': /* shift display right */ - lcd_left_shift--; - lcd_write_cmd(0x1C); - processed = 1; - break; - - case 'k':{ /* kill end of line */ - int x; - for (x = lcd_addr_x; x < lcd_bwidth; x++) - lcd_write_data(' '); - lcd_gotoxy(); /* restore cursor position */ - processed = 1; - break; - } - case 'I': /* reinitialize display */ - lcd_init_display(); - lcd_left_shift = 0; - processed = 1; - break; - - case 'G': /* Generator : LGcxxxxx...xx; */ { - /* must have <c> between '0' and '7', representing the numerical - * ASCII code of the redefined character, and <xx...xx> a sequence - * of 16 hex digits representing 8 bytes for each character. Most - * LCDs will only use 5 lower bits of the 7 first bytes. - */ - - unsigned char cgbytes[8]; - unsigned char cgaddr; - int cgoffset; - int shift; - char value; - int addr; - - if (strchr(esc, ';') == NULL) - break; - - esc++; - - cgaddr = *(esc++) - '0'; - if (cgaddr > 7) { - processed = 1; - break; - } - - cgoffset = 0; - shift = 0; - value = 0; - while (*esc && cgoffset < 8) { - shift ^= 4; - if (*esc >= '0' && *esc <= '9') - value |= (*esc - '0') << shift; - else if (*esc >= 'A' && *esc <= 'Z') - value |= (*esc - 'A' + 10) << shift; - else if (*esc >= 'a' && *esc <= 'z') - value |= (*esc - 'a' + 10) << shift; - else { - esc++; - continue; - } - - if (shift == 0) { - cgbytes[cgoffset++] = value; - value = 0; - } - - esc++; - } - - lcd_write_cmd(0x40 | (cgaddr * 8)); - for (addr = 0; addr < cgoffset; addr++) - lcd_write_data(cgbytes[addr]); - - lcd_gotoxy(); /* ensures that we stop writing to CGRAM */ - processed = 1; - break; - } - case 'x': /* gotoxy : LxXXX[yYYY]; */ - case 'y': /* gotoxy : LyYYY[xXXX]; */ - if (strchr(esc, ';') == NULL) - break; - - while (*esc) { - if (*esc == 'x') { - esc++; - lcd_addr_x = 0; - while (isdigit(*esc)) { - lcd_addr_x = - lcd_addr_x * - 10 + (*esc - - '0'); - esc++; - } - } else if (*esc == 'y') { - esc++; - lcd_addr_y = 0; - while (isdigit(*esc)) { - lcd_addr_y = - lcd_addr_y * - 10 + (*esc - - '0'); - esc++; - } - } else - break; - } - - lcd_gotoxy(); - processed = 1; - break; - } /* end of switch */ - - /* Check wether one flag was changed */ - if (oldflags != lcd_flags) { - /* check wether one of B,C,D flags was changed */ - if ((oldflags ^ lcd_flags) & - (LCD_FLAG_B | LCD_FLAG_C | LCD_FLAG_D)) - /* set display mode */ - lcd_write_cmd(0x08 | - ((lcd_flags & LCD_FLAG_D) ? 4 : 0) | - ((lcd_flags & LCD_FLAG_C) ? 2 : 0) | - ((lcd_flags & LCD_FLAG_B) ? 1 : 0)); - /* check wether one of F,N flags was changed */ - else if ((oldflags ^ lcd_flags) & - (LCD_FLAG_F | LCD_FLAG_N)) - lcd_write_cmd(0x30 | - ((lcd_flags & LCD_FLAG_F) ? 4 : 0) | - ((lcd_flags & LCD_FLAG_N) ? 8 : 0)); - /* check wether L flag was changed */ - else if ((oldflags ^ lcd_flags) & - (LCD_FLAG_L)) { - if (lcd_flags & (LCD_FLAG_L)) - lcd_backlight(1); - else if (light_tempo == 0) /* switch off the light only when the tempo lighting is gone */ - lcd_backlight(0); - } - } + (lcd_escape[0] == '[') && + (lcd_escape[1] == 'L')) { + processed = handle_lcd_special_code(); } /* LCD special escape codes */ - /* flush the escape sequence if it's been processed or if it is - getting too long. */ + /* flush the escape sequence if it's been processed + or if it is getting too long. */ if (processed || (lcd_escape_len >= LCD_ESCAPE_LEN)) lcd_escape_len = -1; - } /* escape codes */ + } /* escape codes */ } return tmp - buf; @@ -1304,7 +1365,7 @@ static int lcd_release(struct inode *inode, struct file *file) return 0; } -static struct file_operations lcd_fops = { +static const struct file_operations lcd_fops = { .write = lcd_write, .open = lcd_open, .release = lcd_release, @@ -1327,7 +1388,8 @@ void panel_lcd_print(char *s) void lcd_init(void) { switch (lcd_type) { - case LCD_TYPE_OLD: /* parallel mode, 8 bits */ + case LCD_TYPE_OLD: + /* parallel mode, 8 bits */ if (lcd_proto < 0) lcd_proto = LCD_PROTO_PARALLEL; if (lcd_charset < 0) @@ -1346,7 +1408,8 @@ void lcd_init(void) if (lcd_height < 0) lcd_height = 2; break; - case LCD_TYPE_KS0074: /* serial mode, ks0074 */ + case LCD_TYPE_KS0074: + /* serial mode, ks0074 */ if (lcd_proto < 0) lcd_proto = LCD_PROTO_SERIAL; if (lcd_charset < 0) @@ -1367,7 +1430,8 @@ void lcd_init(void) if (lcd_height < 0) lcd_height = 2; break; - case LCD_TYPE_NEXCOM: /* parallel mode, 8 bits, generic */ + case LCD_TYPE_NEXCOM: + /* parallel mode, 8 bits, generic */ if (lcd_proto < 0) lcd_proto = LCD_PROTO_PARALLEL; if (lcd_charset < 0) @@ -1388,14 +1452,16 @@ void lcd_init(void) if (lcd_height < 0) lcd_height = 2; break; - case LCD_TYPE_CUSTOM: /* customer-defined */ + case LCD_TYPE_CUSTOM: + /* customer-defined */ if (lcd_proto < 0) lcd_proto = DEFAULT_LCD_PROTO; if (lcd_charset < 0) lcd_charset = DEFAULT_LCD_CHARSET; /* default geometry will be set later */ break; - case LCD_TYPE_HANTRONIX: /* parallel mode, 8 bits, hantronix-like */ + case LCD_TYPE_HANTRONIX: + /* parallel mode, 8 bits, hantronix-like */ default: if (lcd_proto < 0) lcd_proto = LCD_PROTO_PARALLEL; @@ -1496,8 +1562,7 @@ void lcd_init(void) /* before this line, we must NOT send anything to the display. * Since lcd_init_display() needs to write data, we have to - * enable mark the LCD initialized just before. - */ + * enable mark the LCD initialized just before. */ lcd_initialized = 1; lcd_init_display(); @@ -1511,7 +1576,8 @@ void lcd_init(void) PANEL_VERSION); #endif lcd_addr_x = lcd_addr_y = 0; - lcd_must_clear = 1; /* clear the display on the next device opening */ + /* clear the display on the next device opening */ + lcd_must_clear = 1; lcd_gotoxy(); } @@ -1535,7 +1601,8 @@ static ssize_t keypad_read(struct file *file, return -EINTR; } - for (; count-- > 0 && (keypad_buflen > 0); ++i, ++tmp, --keypad_buflen) { + for (; count-- > 0 && (keypad_buflen > 0); + ++i, ++tmp, --keypad_buflen) { put_user(keypad_buffer[keypad_start], tmp); keypad_start = (keypad_start + 1) % KEYPAD_BUFFER; } @@ -1564,7 +1631,7 @@ static int keypad_release(struct inode *inode, struct file *file) return 0; } -static struct file_operations keypad_fops = { +static const struct file_operations keypad_fops = { .read = keypad_read, /* read */ .open = keypad_open, /* open */ .release = keypad_release, /* close */ @@ -1591,14 +1658,15 @@ static void keypad_send_key(char *string, int max_len) } } -/* this function scans all the bits involving at least one logical signal, and puts the - * results in the bitfield "phys_read" (one bit per established contact), and sets - * "phys_read_prev" to "phys_read". +/* this function scans all the bits involving at least one logical signal, + * and puts the results in the bitfield "phys_read" (one bit per established + * contact), and sets "phys_read_prev" to "phys_read". * - * Note: to debounce input signals, we will only consider as switched a signal which is - * stable across 2 measures. Signals which are different between two reads will be kept - * as they previously were in their logical form (phys_prev). A signal which has just - * switched will have a 1 in (phys_read ^ phys_read_prev). + * Note: to debounce input signals, we will only consider as switched a signal + * which is stable across 2 measures. Signals which are different between two + * reads will be kept as they previously were in their logical form (phys_prev). + * A signal which has just switched will have a 1 in + * (phys_read ^ phys_read_prev). */ static void phys_scan_contacts(void) { @@ -1611,21 +1679,30 @@ static void phys_scan_contacts(void) phys_read_prev = phys_read; phys_read = 0; /* flush all signals */ - oldval = r_dtr(pprt) | scan_mask_o; /* keep track of old value, with all outputs disabled */ - w_dtr(pprt, oldval & ~scan_mask_o); /* activate all keyboard outputs (active low) */ - bitmask = PNL_PINPUT(r_str(pprt)) & scan_mask_i; /* will have a 1 for each bit set to gnd */ - w_dtr(pprt, oldval); /* disable all matrix signals */ + /* keep track of old value, with all outputs disabled */ + oldval = r_dtr(pprt) | scan_mask_o; + /* activate all keyboard outputs (active low) */ + w_dtr(pprt, oldval & ~scan_mask_o); + + /* will have a 1 for each bit set to gnd */ + bitmask = PNL_PINPUT(r_str(pprt)) & scan_mask_i; + /* disable all matrix signals */ + w_dtr(pprt, oldval); /* now that all outputs are cleared, the only active input bits are * directly connected to the ground */ - gndmask = PNL_PINPUT(r_str(pprt)) & scan_mask_i; /* 1 for each grounded input */ - phys_read |= (pmask_t) gndmask << 40; /* grounded inputs are signals 40-44 */ + /* 1 for each grounded input */ + gndmask = PNL_PINPUT(r_str(pprt)) & scan_mask_i; + + /* grounded inputs are signals 40-44 */ + phys_read |= (pmask_t) gndmask << 40; if (bitmask != gndmask) { - /* since clearing the outputs changed some inputs, we know that some - * input signals are currently tied to some outputs. So we'll scan them. + /* since clearing the outputs changed some inputs, we know + * that some input signals are currently tied to some outputs. + * So we'll scan them. */ for (bit = 0; bit < 8; bit++) { bitval = 1 << bit; @@ -1639,11 +1716,127 @@ static void phys_scan_contacts(void) } w_dtr(pprt, oldval); /* disable all outputs */ } - /* this is easy: use old bits when they are flapping, use new ones when stable */ - phys_curr = - (phys_prev & (phys_read ^ phys_read_prev)) | (phys_read & - ~(phys_read ^ - phys_read_prev)); + /* this is easy: use old bits when they are flapping, + * use new ones when stable */ + phys_curr = (phys_prev & (phys_read ^ phys_read_prev)) | + (phys_read & ~(phys_read ^ phys_read_prev)); +} + +static inline int input_state_high(struct logical_input *input) +{ +#if 0 + /* FIXME: + * this is an invalid test. It tries to catch + * transitions from single-key to multiple-key, but + * doesn't take into account the contacts polarity. + * The only solution to the problem is to parse keys + * from the most complex to the simplest combinations, + * and mark them as 'caught' once a combination + * matches, then unmatch it for all other ones. + */ + + /* try to catch dangerous transitions cases : + * someone adds a bit, so this signal was a false + * positive resulting from a transition. We should + * invalidate the signal immediately and not call the + * release function. + * eg: 0 -(press A)-> A -(press B)-> AB : don't match A's release. + */ + if (((phys_prev & input->mask) == input->value) + && ((phys_curr & input->mask) > input->value)) { + input->state = INPUT_ST_LOW; /* invalidate */ + return 1; + } +#endif + + if ((phys_curr & input->mask) == input->value) { + if ((input->type == INPUT_TYPE_STD) && + (input->high_timer == 0)) { + input->high_timer++; + if (input->u.std.press_fct != NULL) + input->u.std.press_fct(input->u.std.press_data); + } else if (input->type == INPUT_TYPE_KBD) { + /* will turn on the light */ + keypressed = 1; + + if (input->high_timer == 0) { + char *press_str = input->u.kbd.press_str; + if (press_str[0]) + keypad_send_key(press_str, + sizeof(press_str)); + } + + if (input->u.kbd.repeat_str[0]) { + char *repeat_str = input->u.kbd.repeat_str; + if (input->high_timer >= KEYPAD_REP_START) { + input->high_timer -= KEYPAD_REP_DELAY; + keypad_send_key(repeat_str, + sizeof(repeat_str)); + } + /* we will need to come back here soon */ + inputs_stable = 0; + } + + if (input->high_timer < 255) + input->high_timer++; + } + return 1; + } else { + /* else signal falling down. Let's fall through. */ + input->state = INPUT_ST_FALLING; + input->fall_timer = 0; + } + return 0; +} + +static inline void input_state_falling(struct logical_input *input) +{ +#if 0 + /* FIXME !!! same comment as in input_state_high */ + if (((phys_prev & input->mask) == input->value) + && ((phys_curr & input->mask) > input->value)) { + input->state = INPUT_ST_LOW; /* invalidate */ + return; + } +#endif + + if ((phys_curr & input->mask) == input->value) { + if (input->type == INPUT_TYPE_KBD) { + /* will turn on the light */ + keypressed = 1; + + if (input->u.kbd.repeat_str[0]) { + char *repeat_str = input->u.kbd.repeat_str; + if (input->high_timer >= KEYPAD_REP_START) + input->high_timer -= KEYPAD_REP_DELAY; + keypad_send_key(repeat_str, + sizeof(repeat_str)); + /* we will need to come back here soon */ + inputs_stable = 0; + } + + if (input->high_timer < 255) + input->high_timer++; + } + input->state = INPUT_ST_HIGH; + } else if (input->fall_timer >= input->fall_time) { + /* call release event */ + if (input->type == INPUT_TYPE_STD) { + void (*release_fct)(int) = input->u.std.release_fct; + if (release_fct != NULL) + release_fct(input->u.std.release_data); + } else if (input->type == INPUT_TYPE_KBD) { + char *release_str = input->u.kbd.release_str; + if (release_str[0]) + keypad_send_key(release_str, + sizeof(release_str)); + } + + input->state = INPUT_ST_LOW; + } else { + input->fall_timer++; + inputs_stable = 0; + } } static void panel_process_inputs(void) @@ -1666,10 +1859,12 @@ static void panel_process_inputs(void) case INPUT_ST_LOW: if ((phys_curr & input->mask) != input->value) break; - /* if all needed ones were already set previously, this means that - * this logical signal has been activated by the releasing of - * another combined signal, so we don't want to match. - * eg: AB -(release B)-> A -(release A)-> 0 : don't match A. + /* if all needed ones were already set previously, + * this means that this logical signal has been + * activated by the releasing of another combined + * signal, so we don't want to match. + * eg: AB -(release B)-> A -(release A)-> 0 : + * don't match A. */ if ((phys_prev & input->mask) == input->value) break; @@ -1690,122 +1885,11 @@ static void panel_process_inputs(void) input->state = INPUT_ST_HIGH; /* no break here, fall through */ case INPUT_ST_HIGH: -#if 0 - /* FIXME: - * this is an invalid test. It tries to catch transitions from single-key - * to multiple-key, but doesn't take into account the contacts polarity. - * The only solution to the problem is to parse keys from the most complex - * to the simplest combinations, and mark them as 'caught' once a combination - * matches, then unmatch it for all other ones. - */ - - /* try to catch dangerous transitions cases : - * someone adds a bit, so this signal was a false - * positive resulting from a transition. We should invalidate - * the signal immediately and not call the release function. - * eg: 0 -(press A)-> A -(press B)-> AB : don't match A's release. - */ - if (((phys_prev & input->mask) == input->value) - && ((phys_curr & input->mask) > input->value)) { - input->state = INPUT_ST_LOW; /* invalidate */ + if (input_state_high(input)) break; - } -#endif - - if ((phys_curr & input->mask) == input->value) { - if ((input->type == INPUT_TYPE_STD) - && (input->high_timer == 0)) { - input->high_timer++; - if (input->u.std.press_fct != NULL) - input->u.std.press_fct(input->u. - std. - press_data); - } else if (input->type == INPUT_TYPE_KBD) { - keypressed = 1; /* will turn on the light */ - - if (input->high_timer == 0) { - if (input->u.kbd.press_str[0]) - keypad_send_key(input-> - u.kbd. - press_str, - sizeof - (input-> - u.kbd. - press_str)); - } - - if (input->u.kbd.repeat_str[0]) { - if (input->high_timer >= - KEYPAD_REP_START) { - input->high_timer -= - KEYPAD_REP_DELAY; - keypad_send_key(input-> - u.kbd. - repeat_str, - sizeof - (input-> - u.kbd. - repeat_str)); - } - inputs_stable = 0; /* we will need to come back here soon */ - } - - if (input->high_timer < 255) - input->high_timer++; - } - break; - } else { - /* else signal falling down. Let's fall through. */ - input->state = INPUT_ST_FALLING; - input->fall_timer = 0; - } /* no break here, fall through */ case INPUT_ST_FALLING: -#if 0 - /* FIXME !!! same comment as above */ - if (((phys_prev & input->mask) == input->value) - && ((phys_curr & input->mask) > input->value)) { - input->state = INPUT_ST_LOW; /* invalidate */ - break; - } -#endif - - if ((phys_curr & input->mask) == input->value) { - if (input->type == INPUT_TYPE_KBD) { - keypressed = 1; /* will turn on the light */ - - if (input->u.kbd.repeat_str[0]) { - if (input->high_timer >= KEYPAD_REP_START) - input->high_timer -= KEYPAD_REP_DELAY; - keypad_send_key(input->u.kbd.repeat_str, - sizeof(input->u.kbd.repeat_str)); - inputs_stable = 0; /* we will need to come back here soon */ - } - - if (input->high_timer < 255) - input->high_timer++; - } - input->state = INPUT_ST_HIGH; - break; - } else if (input->fall_timer >= input->fall_time) { - /* call release event */ - if (input->type == INPUT_TYPE_STD) { - if (input->u.std.release_fct != NULL) - input->u.std.release_fct(input->u.std.release_data); - - } else if (input->type == INPUT_TYPE_KBD) { - if (input->u.kbd.release_str[0]) - keypad_send_key(input->u.kbd.release_str, - sizeof(input->u.kbd.release_str)); - } - - input->state = INPUT_ST_LOW; - break; - } else { - input->fall_timer++; - inputs_stable = 0; - break; - } + input_state_falling(input); } } } @@ -1815,7 +1899,9 @@ static void panel_scan_timer(void) if (keypad_enabled && keypad_initialized) { if (spin_trylock(&pprt_lock)) { phys_scan_contacts(); - spin_unlock(&pprt_lock); /* no need for the parport anymore */ + + /* no need for the parport anymore */ + spin_unlock(&pprt_lock); } if (!inputs_stable || phys_curr != phys_prev) @@ -1850,8 +1936,8 @@ static void init_scan_timer(void) } /* converts a name of the form "({BbAaPpSsEe}{01234567-})*" to a series of bits. - * if <omask> or <imask> are non-null, they will be or'ed with the bits corresponding - * to out and in bits respectively. + * if <omask> or <imask> are non-null, they will be or'ed with the bits + * corresponding to out and in bits respectively. * returns 1 if ok, 0 if error (in which case, nothing is written). */ static int input_name2mask(char *name, pmask_t *mask, pmask_t *value, @@ -1864,7 +1950,8 @@ static int input_name2mask(char *name, pmask_t *mask, pmask_t *value, om = im = m = v = 0ULL; while (*name) { int in, out, bit, neg; - for (in = 0; (in < sizeof(sigtab)) && (sigtab[in] != *name); in++) + for (in = 0; (in < sizeof(sigtab)) && + (sigtab[in] != *name); in++) ; if (in >= sizeof(sigtab)) return 0; /* input name not found */ @@ -1936,7 +2023,8 @@ static struct logical_input *panel_bind_key(char *name, char *press, /* tries to bind a callback function to the signal name <name>. The function * <press_fct> will be called with the <press_data> arg when the signal is * activated, and so on for <release_fct>/<release_data> - * Returns the pointer to the new signal if ok, NULL if the signal could not be bound. + * Returns the pointer to the new signal if ok, NULL if the signal could not + * be bound. */ static struct logical_input *panel_bind_callback(char *name, void (*press_fct) (int), @@ -2028,24 +2116,27 @@ static void panel_attach(struct parport *port) if (pprt) { printk(KERN_ERR - "panel_attach(): port->number=%d parport=%d, already registered !\n", + "panel_attach(): port->number=%d parport=%d, " + "already registered !\n", port->number, parport); return; } - pprt = parport_register_device(port, "panel", NULL, NULL, /* pf, kf */ + pprt = parport_register_device(port, "panel", NULL, NULL, /* pf, kf */ NULL, /*PARPORT_DEV_EXCL */ 0, (void *)&pprt); if (parport_claim(pprt)) { printk(KERN_ERR - "Panel: could not claim access to parport%d. Aborting.\n", - parport); + "Panel: could not claim access to parport%d. " + "Aborting.\n", parport); return; } - /* must init LCD first, just in case an IRQ from the keypad is generated at keypad init */ + /* must init LCD first, just in case an IRQ from the keypad is + * generated at keypad init + */ if (lcd_enabled) { lcd_init(); misc_register(&lcd_dev); @@ -2064,7 +2155,8 @@ static void panel_detach(struct parport *port) if (!pprt) { printk(KERN_ERR - "panel_detach(): port->number=%d parport=%d, nothing to unregister.\n", + "panel_detach(): port->number=%d parport=%d, " + "nothing to unregister.\n", port->number, parport); return; } @@ -2105,13 +2197,15 @@ int panel_init(void) /* take care of an eventual profile */ switch (profile) { - case PANEL_PROFILE_CUSTOM: /* custom profile */ + case PANEL_PROFILE_CUSTOM: + /* custom profile */ if (keypad_type < 0) keypad_type = DEFAULT_KEYPAD; if (lcd_type < 0) lcd_type = DEFAULT_LCD; break; - case PANEL_PROFILE_OLD: /* 8 bits, 2*16, old keypad */ + case PANEL_PROFILE_OLD: + /* 8 bits, 2*16, old keypad */ if (keypad_type < 0) keypad_type = KEYPAD_TYPE_OLD; if (lcd_type < 0) @@ -2121,25 +2215,29 @@ int panel_init(void) if (lcd_hwidth < 0) lcd_hwidth = 16; break; - case PANEL_PROFILE_NEW: /* serial, 2*16, new keypad */ + case PANEL_PROFILE_NEW: + /* serial, 2*16, new keypad */ if (keypad_type < 0) keypad_type = KEYPAD_TYPE_NEW; if (lcd_type < 0) lcd_type = LCD_TYPE_KS0074; break; - case PANEL_PROFILE_HANTRONIX: /* 8 bits, 2*16 hantronix-like, no keypad */ + case PANEL_PROFILE_HANTRONIX: + /* 8 bits, 2*16 hantronix-like, no keypad */ if (keypad_type < 0) keypad_type = KEYPAD_TYPE_NONE; if (lcd_type < 0) lcd_type = LCD_TYPE_HANTRONIX; break; - case PANEL_PROFILE_NEXCOM: /* generic 8 bits, 2*16, nexcom keypad, eg. Nexcom. */ + case PANEL_PROFILE_NEXCOM: + /* generic 8 bits, 2*16, nexcom keypad, eg. Nexcom. */ if (keypad_type < 0) keypad_type = KEYPAD_TYPE_NEXCOM; if (lcd_type < 0) lcd_type = LCD_TYPE_NEXCOM; break; - case PANEL_PROFILE_LARGE: /* 8 bits, 2*40, old keypad */ + case PANEL_PROFILE_LARGE: + /* 8 bits, 2*40, old keypad */ if (keypad_type < 0) keypad_type = KEYPAD_TYPE_OLD; if (lcd_type < 0) @@ -2195,7 +2293,8 @@ int panel_init(void) else printk(KERN_INFO "Panel driver version " PANEL_VERSION " not yet registered\n"); - /* tells various subsystems about the fact that initialization is finished */ + /* tells various subsystems about the fact that initialization + is finished */ init_in_progress = 0; return 0; } |