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authorGeert Uytterhoeven <geert@linux-m68k.org>2017-02-06 17:38:09 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-02-10 17:32:53 +0300
commit204a4f6d67a4d7e65571c21bd90039fdccc35b2c (patch)
tree400fe1ffabddeda3688fb46b67bbd5f86b40cbab /drivers/misc
parent3f77b43965054c17fbc3111650c4e90f294a7bbe (diff)
downloadlinux-204a4f6d67a4d7e65571c21bd90039fdccc35b2c.tar.xz
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')
-rw-r--r--drivers/misc/panel.c39
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();
}
/*