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fuze+: correctly handle settings (flip and invert) accross enable

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The flip and invert settings can potentially be reset to their
value accross a disable/enable cycle, so save the value of the
impacted registers and apply it after each enable. Also avoid
poking registers when the lcd is not on.

Change-Id: Ica98f166c060aade7eb205f5628b58aae692024f
This commit is contained in:
Amaury Pouly 2013-01-12 19:04:20 +00:00
parent 0946a1e0f2
commit 5e7bd97e04
1 changed files with 34 additions and 2 deletions
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36
firmware/target/arm/imx233/sansa-fuzeplus/lcd-fuzeplus.c
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@ -40,6 +40,12 @@ static bool lcd_on;
#endif
static unsigned lcd_yuv_options = 0;
static int lcd_dcp_channel = -1;
#ifdef HAVE_LCD_INVERT
static int lcd_reg_0x61_val = 1; /* used to invert display */
#endif
#ifdef HAVE_LCD_FLIP
static int lcd_reg_3_val = 0x1030; /* controls to flip display */
#endif
static enum lcd_kind_t
{
@ -367,6 +373,16 @@ static void lcd_init_seq_9325(void)
_end_seq()
}
static void lcd_sync_settings(void)
{
#ifdef HAVE_LCD_INVERT
lcd_write_reg(0x61, lcd_reg_0x61_val);
#endif
#ifdef HAVE_LCD_FLIP
lcd_write_reg(3, lcd_reg_3_val);
#endif
}
void lcd_init_device(void)
{
lcd_dcp_channel = imx233_dcp_acquire_channel(TIMEOUT_NOBLOCK);
@ -398,6 +414,8 @@ void lcd_init_device(void)
lcd_init_seq_7783(); break;
}
lcd_sync_settings();
#ifdef HAVE_LCD_ENABLE
lcd_on = true;
#endif
@ -502,22 +520,36 @@ void lcd_enable(bool enable)
}
if(!enable)
common_lcd_enable(false);
else
{
lcd_sync_settings();
}
}
#endif
#ifdef HAVE_LCD_INVERT
void lcd_set_invert_display(bool yesno)
{
lcd_reg_0x61_val = yesno ? 0 : 1;
#ifdef HAVE_LCD_ENABLE
if(!lcd_on)
return;
#endif
/* same for both kinds */
lcd_write_reg(0x61, yesno ? 0 : 1);
lcd_write_reg(0x61, lcd_reg_0x61_val);
}
#endif
#ifdef HAVE_LCD_FLIP
void lcd_set_flip(bool yesno)
{
lcd_reg_3_val = yesno ? 0x1000 : 0x1030;
#ifdef HAVE_LCD_ENABLE
if(!lcd_on)
return;
#endif
/* same for both kinds */
lcd_write_reg(3, yesno ? 0x1000 : 0x1030);
lcd_write_reg(3, lcd_reg_3_val);
}
#endif