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>

diff --git a/drivers/misc/panel.c b/drivers/misc/panel.c
index ed19b3e399b08d1f95ccaf31bd960611431e7c3f..9c7b00951c22b1c27ec2b69b0843359f3e02def9 100644 (file)
--- 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();
 }
 
 /*