diff options
Diffstat (limited to 'drivers/auxdisplay/charlcd.c')
| -rw-r--r-- | drivers/auxdisplay/charlcd.c | 61 |
1 files changed, 25 insertions, 36 deletions
diff --git a/drivers/auxdisplay/charlcd.c b/drivers/auxdisplay/charlcd.c index ce6622f71c34..1b37d4bc38f9 100644 --- a/drivers/auxdisplay/charlcd.c +++ b/drivers/auxdisplay/charlcd.c @@ -72,12 +72,6 @@ struct charlcd_priv { /* contains the LCD config state */ unsigned long int flags; - /* Contains the LCD X and Y offset */ - struct { - unsigned long int x; - unsigned long int y; - } addr; - /* Current escape sequence and it's length or -1 if outside */ struct { char buf[LCD_ESCAPE_LEN + 1]; @@ -148,7 +142,6 @@ EXPORT_SYMBOL_GPL(charlcd_poke); static void charlcd_gotoxy(struct charlcd *lcd) { - struct charlcd_priv *priv = charlcd_to_priv(lcd); struct hd44780_common *hdc = lcd->drvdata; unsigned int addr; @@ -156,37 +149,34 @@ static void charlcd_gotoxy(struct charlcd *lcd) * we force the cursor to stay at the end of the * line if it wants to go farther */ - addr = priv->addr.x < hdc->bwidth ? priv->addr.x & (hdc->hwidth - 1) + addr = lcd->addr.x < hdc->bwidth ? lcd->addr.x & (hdc->hwidth - 1) : hdc->bwidth - 1; - if (priv->addr.y & 1) + if (lcd->addr.y & 1) addr += hdc->hwidth; - if (priv->addr.y & 2) + if (lcd->addr.y & 2) addr += hdc->bwidth; hdc->write_cmd(hdc, LCD_CMD_SET_DDRAM_ADDR | addr); } static void charlcd_home(struct charlcd *lcd) { - struct charlcd_priv *priv = charlcd_to_priv(lcd); - - priv->addr.x = 0; - priv->addr.y = 0; + lcd->addr.x = 0; + lcd->addr.y = 0; charlcd_gotoxy(lcd); } static void charlcd_print(struct charlcd *lcd, char c) { - struct charlcd_priv *priv = charlcd_to_priv(lcd); struct hd44780_common *hdc = lcd->drvdata; - if (priv->addr.x < hdc->bwidth) { + if (lcd->addr.x < hdc->bwidth) { if (lcd->char_conv) c = lcd->char_conv[(unsigned char)c]; hdc->write_data(hdc, c); - priv->addr.x++; + lcd->addr.x++; /* prevents the cursor from wrapping onto the next line */ - if (priv->addr.x == hdc->bwidth) + if (lcd->addr.x == hdc->bwidth) charlcd_gotoxy(lcd); } } @@ -210,12 +200,11 @@ static void charlcd_clear_fast(struct charlcd *lcd) /* clears the display and resets X/Y */ static void charlcd_clear_display(struct charlcd *lcd) { - struct charlcd_priv *priv = charlcd_to_priv(lcd); struct hd44780_common *hdc = lcd->drvdata; hdc->write_cmd(hdc, LCD_CMD_DISPLAY_CLEAR); - priv->addr.x = 0; - priv->addr.y = 0; + lcd->addr.x = 0; + lcd->addr.y = 0; /* we must wait a few milliseconds (15) */ long_sleep(15); } @@ -415,21 +404,21 @@ static inline int handle_lcd_special_code(struct charlcd *lcd) processed = 1; break; case 'l': /* Shift Cursor Left */ - if (priv->addr.x > 0) { + if (lcd->addr.x > 0) { /* back one char if not at end of line */ - if (priv->addr.x < hdc->bwidth) + if (lcd->addr.x < hdc->bwidth) hdc->write_cmd(hdc, LCD_CMD_SHIFT); - priv->addr.x--; + lcd->addr.x--; } processed = 1; break; case 'r': /* shift cursor right */ - if (priv->addr.x < lcd->width) { + if (lcd->addr.x < lcd->width) { /* allow the cursor to pass the end of the line */ - if (priv->addr.x < (hdc->bwidth - 1)) + if (lcd->addr.x < (hdc->bwidth - 1)) hdc->write_cmd(hdc, LCD_CMD_SHIFT | LCD_CMD_SHIFT_RIGHT); - priv->addr.x++; + lcd->addr.x++; } processed = 1; break; @@ -446,7 +435,7 @@ static inline int handle_lcd_special_code(struct charlcd *lcd) case 'k': { /* kill end of line */ int x; - for (x = priv->addr.x; x < hdc->bwidth; x++) + for (x = lcd->addr.x; x < hdc->bwidth; x++) hdc->write_data(hdc, ' '); /* restore cursor position */ @@ -519,7 +508,7 @@ static inline int handle_lcd_special_code(struct charlcd *lcd) break; /* If the command is valid, move to the new address */ - if (parse_xy(esc, &priv->addr.x, &priv->addr.y)) + if (parse_xy(esc, &lcd->addr.x, &lcd->addr.y)) charlcd_gotoxy(lcd); /* Regardless of its validity, mark as processed */ @@ -577,15 +566,15 @@ static void charlcd_write_char(struct charlcd *lcd, char c) break; case '\b': /* go back one char and clear it */ - if (priv->addr.x > 0) { + if (lcd->addr.x > 0) { /* * check if we're not at the * end of the line */ - if (priv->addr.x < hdc->bwidth) + if (lcd->addr.x < hdc->bwidth) /* back one char */ hdc->write_cmd(hdc, LCD_CMD_SHIFT); - priv->addr.x--; + lcd->addr.x--; } /* replace with a space */ hdc->write_data(hdc, ' '); @@ -601,15 +590,15 @@ static void charlcd_write_char(struct charlcd *lcd, char c) * flush the remainder of the current line and * go to the beginning of the next line */ - for (; priv->addr.x < hdc->bwidth; priv->addr.x++) + for (; lcd->addr.x < hdc->bwidth; lcd->addr.x++) hdc->write_data(hdc, ' '); - priv->addr.x = 0; - priv->addr.y = (priv->addr.y + 1) % lcd->height; + lcd->addr.x = 0; + lcd->addr.y = (lcd->addr.y + 1) % lcd->height; charlcd_gotoxy(lcd); break; case '\r': /* go to the beginning of the same line */ - priv->addr.x = 0; + lcd->addr.x = 0; charlcd_gotoxy(lcd); break; case '\t': |