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Sansa clip zip: update lcd_update_rect to even-align horizontal coordinates for the wisechip display type

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30969 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Bertrik Sikken 2011-11-12 20:14:44 +00:00
parent caec07be65
commit fdc906743f
1 changed files with 10 additions and 1 deletions
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11
firmware/target/arm/as3525/sansa-clipzip/lcd-clipzip.c
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@ -335,6 +335,8 @@ static void lcd_setup_rect(int x, int x_end, int y, int y_end)
lcd_write(0x35, x_end); /* MEM_X2 */
lcd_write(0x36, y); /* MEM_Y1 */
lcd_write(0x37, y_end); /* MEM_Y2 */
lcd_write_cmd(0x08); /* DDRAM_DATA_ACCESS_PORT */
}
else {
lcd_write_cmd(0x0A);
@ -342,6 +344,8 @@ static void lcd_setup_rect(int x, int x_end, int y, int y_end)
lcd_write_nibbles(x_end);
lcd_write_nibbles(y);
lcd_write_nibbles(y_end);
lcd_write_cmd(0x0C);
}
}
@ -396,6 +400,12 @@ void lcd_update_rect(int x, int y, int width, int height)
return;
}
/* align horizontal position to even for wisechip display */
if (lcd_type == 0) {
x = x & ~1;
x_end = (x_end + 1) & ~1;
}
/* correct rectangle (if necessary) */
if (x < 0) {
x = 0;
@ -415,7 +425,6 @@ void lcd_update_rect(int x, int y, int width, int height)
lcd_setup_rect(x, x_end - 1, y, y_end - 1);
/* write to GRAM */
lcd_write_cmd((lcd_type == 0) ? 0x08 : 0x0C); /* DDRAM_DATA_ACCESS_PORT */
for (row = y; row < y_end; row++) {
lcd_write_data(&lcd_framebuffer[row][x], width);
}