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Get rid of disabling irq. Simply blocking does it too, it also caused problems (particulary with scrolling lines).

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20040 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Thomas Martitz 2009-02-18 16:38:16 +00:00
parent 6a3779b543
commit 30255d53da
2 changed files with 26 additions and 21 deletions
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18
firmware/target/arm/as3525/sansa-fuze/lcd-fuze.c
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@ -41,8 +41,10 @@
static bool display_on = false; /* is the display turned on? */
static bool display_flipped = false;
static int xoffset = 20; /* needed for flip */
static volatile int _ystart, _ymax, _xstart, _xmax;
/* we need to write a red pixel for correct button reads
* (see lcd_button_support()), but that must not happen while the lcd is updating
* so block lcd_button_support the during updates */
static volatile bool lcd_busy = false;
static void as3525_dbop_init(void)
{
@ -285,8 +287,7 @@ void lcd_update(void)
lcd_write_reg(R_ENTRY_MODE, R_ENTRY_MODE_HORZ);
/* we must disable interrupts because buttondriver also writes to lcd */
disable_irq();
lcd_busy = true;
lcd_window_x(0, LCD_WIDTH - 1);
lcd_window_y(0, LCD_HEIGHT - 1);
@ -295,7 +296,7 @@ void lcd_update(void)
/* Write data */
lcd_write_data((unsigned short *)lcd_framebuffer, LCD_WIDTH*LCD_HEIGHT);
enable_irq();
lcd_busy = false;
}
/* Update a fraction of the display. */
@ -327,8 +328,7 @@ void lcd_update_rect(int x, int y, int width, int height)
lcd_write_reg(R_ENTRY_MODE, R_ENTRY_MODE_HORZ);
/* we must disable interrupts because buttondriver also writes to lcd */
disable_irq();
lcd_busy = true;
lcd_window_x(x, xmax);
lcd_window_y(y, ymax);
@ -343,13 +343,15 @@ void lcd_update_rect(int x, int y, int width, int height)
ptr += LCD_WIDTH;
}
while (++y <= ymax);
enable_irq();
lcd_busy = false;
}
/* writes one read pixel outside the visible area, needed for correct dbop reads */
void lcd_button_support(void)
{
fb_data data = 0xf<<12;
if (lcd_busy)
return;
lcd_write_reg(R_ENTRY_MODE, R_ENTRY_MODE_HORZ);
/* Set start position and window */