diff options
| author | Geert Uytterhoeven <geert@linux-m68k.org> | 2017-02-06 15:38:09 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-02-10 15:32:53 +0100 |
| commit | 204a4f6d67a4d7e65571c21bd90039fdccc35b2c (patch) | |
| tree | 400fe1ffabddeda3688fb46b67bbd5f86b40cbab /drivers/misc/panel.c | |
| parent | misc: panel: Remove always-true check from panel_detach() (diff) | |
| download | linux-204a4f6d67a4d7e65571c21bd90039fdccc35b2c.tar.xz linux-204a4f6d67a4d7e65571c21bd90039fdccc35b2c.zip | |
misc: panel: Add lcd_home() helper
Add a helper function to move the cursor to the home position, so
callers no longer need access to internal state.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/panel.c')
| -rw-r--r-- | drivers/misc/panel.c | 39 |
1 files changed, 15 insertions, 24 deletions
diff --git a/drivers/misc/panel.c b/drivers/misc/panel.c index ed19b3e399b0..9c7b00951c22 100644 --- a/drivers/misc/panel.c +++ b/drivers/misc/panel.c @@ -903,6 +903,13 @@ static void lcd_gotoxy(void) (lcd.hwidth - 1) : lcd.bwidth - 1)); } +static void lcd_home(void) +{ + lcd.addr.x = 0; + lcd.addr.y = 0; + lcd_gotoxy(); +} + static void lcd_print(char c) { if (lcd.addr.x < lcd.bwidth) { @@ -921,9 +928,7 @@ static void lcd_clear_fast_s(void) { int pos; - lcd.addr.x = 0; - lcd.addr.y = 0; - lcd_gotoxy(); + lcd_home(); spin_lock_irq(&pprt_lock); for (pos = 0; pos < lcd.height * lcd.hwidth; pos++) { @@ -935,9 +940,7 @@ static void lcd_clear_fast_s(void) } spin_unlock_irq(&pprt_lock); - lcd.addr.x = 0; - lcd.addr.y = 0; - lcd_gotoxy(); + lcd_home(); } /* fills the display with spaces and resets X/Y */ @@ -945,9 +948,7 @@ static void lcd_clear_fast_p8(void) { int pos; - lcd.addr.x = 0; - lcd.addr.y = 0; - lcd_gotoxy(); + lcd_home(); spin_lock_irq(&pprt_lock); for (pos = 0; pos < lcd.height * lcd.hwidth; pos++) { @@ -973,9 +974,7 @@ static void lcd_clear_fast_p8(void) } spin_unlock_irq(&pprt_lock); - lcd.addr.x = 0; - lcd.addr.y = 0; - lcd_gotoxy(); + lcd_home(); } /* fills the display with spaces and resets X/Y */ @@ -983,9 +982,7 @@ static void lcd_clear_fast_tilcd(void) { int pos; - lcd.addr.x = 0; - lcd.addr.y = 0; - lcd_gotoxy(); + lcd_home(); spin_lock_irq(&pprt_lock); for (pos = 0; pos < lcd.height * lcd.hwidth; pos++) { @@ -996,9 +993,7 @@ static void lcd_clear_fast_tilcd(void) spin_unlock_irq(&pprt_lock); - lcd.addr.x = 0; - lcd.addr.y = 0; - lcd_gotoxy(); + lcd_home(); } /* clears the display and resets X/Y */ @@ -1373,9 +1368,7 @@ static void lcd_write_char(char c) processed = 1; } else if (!strcmp(lcd.esc_seq.buf, "[H")) { /* cursor to home */ - lcd.addr.x = 0; - lcd.addr.y = 0; - lcd_gotoxy(); + lcd_home(); processed = 1; } /* codes starting with ^[[L */ @@ -1654,11 +1647,9 @@ static void lcd_init(void) #else panel_lcd_print("\x1b[Lc\x1b[Lb\x1b[L*Linux-" UTS_RELEASE); #endif - lcd.addr.x = 0; - lcd.addr.y = 0; /* clear the display on the next device opening */ lcd.must_clear = true; - lcd_gotoxy(); + lcd_home(); } /* |