static void spi_enable(bool en)
{
imx233_pinctrl_set_gpio(1, 9, en);
imx233_pinctrl_set_gpio(1, 10, en);
imx233_pinctrl_set_gpio(1, 11, en);
imx233_pinctrl_enable_gpio(1, 9, en);
imx233_pinctrl_enable_gpio(1, 10, en);
imx233_pinctrl_enable_gpio(1, 11, en);
mdelay(1);
}
bool _backlight_init(void)
{
imx233_pinctrl_acquire(0, 10, "backlight_enable");
imx233_pinctrl_set_function(0, 10, PINCTRL_FUNCTION_GPIO);
imx233_pinctrl_enable_gpio(0, 10, true);
imx233_pinctrl_set_gpio(0, 10, true);
_backlight_set_brightness(DEFAULT_BRIGHTNESS_SETTING);
return true;
}
// enable/disable the speaker audio gate (typically using a GPIO)
void __attribute__((weak)) imx233_audio_enable_spkr(bool en)
{
#ifdef IMX233_AUDIO_SPKR_GATE_BANK
# ifdef IMX233_AUDIO_SPKR_GATE_INVERTED
en = !en;
# endif
imx233_pinctrl_set_gpio(IMX233_AUDIO_SPKR_GATE_BANK, IMX233_AUDIO_SPKR_GATE_PIN, en);
#else
(void) en;
#endif
}
void imx233_system_prepare_shutdown(void)
{
/* wait a bit, useful for the user to stop touching anything */
sleep(HZ / 2);
/* disable watchdog just in case since we will disable interrupts */
imx233_rtc_enable_watchdog(false);
/* disable interrupts, it's probably better to avoid any action so close
* to shutdown */
disable_interrupt(IRQ_FIQ_STATUS);
#ifdef SANSA_FUZEPLUS
/* This pin seems to be important to shutdown the hardware properly */
imx233_pinctrl_acquire(0, 9, "power off");
imx233_pinctrl_set_function(0, 9, PINCTRL_FUNCTION_GPIO);
imx233_pinctrl_enable_gpio(0, 9, true);
imx233_pinctrl_set_gpio(0, 9, true);
#endif
}
void _backlight_set_brightness(int level)
{
#if defined(CREATIVE_ZENXFISTYLE)
imx233_pwm_setup_simple(4, 24000, level);
imx233_pwm_enable(4, true);
#elif defined(CREATIVE_ZENV)
lcd_set_contrast(level);
#else
unsigned val = (level + 200) * level / 1000;
if(level != 0)
{
for(unsigned mask = 0x10; mask; mask >>= 1)
imx233_uartdbg_send((val & mask) ? 0xff : 0xf8);
imx233_uartdbg_send(0);
imx233_pinctrl_set_gpio(1, 12, true);
}
else
static void lcd_power(bool en)
{
imx233_pinctrl_set_gpio(1, 8, en);
mdelay(10);
}
void lcd_init_device(void)
{
// determine power type
imx233_pinctrl_acquire(3, 16, "lcd power kind");
imx233_pinctrl_set_function(3, 16, PINCTRL_FUNCTION_GPIO);
imx233_pinctrl_enable_gpio(3, 16, false);
udelay(10);
lcd_has_power = !imx233_pinctrl_get_gpio(3, 16);
if(lcd_has_power)
{
imx233_pinctrl_acquire(0, 27, "lcd power");
imx233_pinctrl_set_function(0, 27, PINCTRL_FUNCTION_GPIO);
imx233_pinctrl_enable_gpio(0, 27, true);
imx233_pinctrl_set_gpio(0, 27, true);
}
// determine kind (don't acquire pin because it's a lcdif pin !)
imx233_pinctrl_set_function(1, 0, PINCTRL_FUNCTION_GPIO);
imx233_pinctrl_enable_gpio(1, 0, false);
udelay(10);
lcd_kind = imx233_pinctrl_get_gpio(1, 0);
imx233_lcdif_init();
imx233_lcdif_reset_lcd(false);
imx233_lcdif_reset_lcd(true);
imx233_lcdif_setup_system_pins(16);
imx233_lcdif_set_timings(2, 2, 2, 2);
imx233_lcdif_set_word_length(8);
// set mux ratio
lcd_send(false, 0xca); lcd_send(true, 131);
// set remap, color and depth
lcd_send(false, 0xa0); lcd_send(true, 0x74);
// set master contrast
lcd_send(false, 0xc7); lcd_send(true, 0x8);
// set V_COMH
lcd_send(false, 0xbe); lcd_send(true, lcd_kind ? 0x1c : 0x18);
// set color contrasts
lcd_send(false, 0xc1); lcd_send(true, 0x7b); lcd_send(true, 0x69); lcd_send(true, lcd_kind ? 0xcf : 0x9f);
// set timings
lcd_send(false, 0xb1); lcd_send(true, 0x1f);
lcd_send(false, 0xb3); lcd_send(true, 0x80);
// set precharge voltages
lcd_send(false, 0xbb); lcd_send(true, 0x00); lcd_send(true, 0x00); lcd_send(true, 0x00);
// set master config
lcd_send(false, 0xad); lcd_send(true, 0x8a);
// set power saving mode
lcd_send(false, 0xb0); lcd_send(true, 0x00);
// set normal display (seem to be a SSD1338 only command, not present in SS1339 datasheet)
lcd_send(false, 0xd1); lcd_send(true, 0x02);
// set LUT
lcd_send(false, 0xb8);
static uint8_t lut[32] =
{
0x01, 0x15, 0x19, 0x1D, 0x21, 0x25, 0x29, 0x2D, 0x31, 0x35, 0x39, 0x3D,
0x41, 0x45, 0x49, 0x4D, 0x51, 0x55, 0x59, 0x5D, 0x61, 0x65, 0x69, 0x6D,
0x71, 0x75, 0x79, 0x7D, 0x81, 0x85, 0x89, 0x8D
};
for(int i = 0; i < 32; i++)
lcd_send(true, lut[i]);
// set display offset (this lcd is really wired strangely)
lcd_send(false, 0xa2); lcd_send(true, 128);
// normal display
lcd_send(false, 0xa6);
// sleep mode off
lcd_send(false, 0xaf);
// write ram
lcd_send(false, 0x5c);
imx233_lcdif_set_word_length(16);
for(int y = 0; y < LCD_HEIGHT; y++)
for(int x = 0; x < LCD_WIDTH; x++)
{
uint16_t v = 0;
imx233_lcdif_pio_send(true, 1, &v);
}
#ifdef HAVE_LCD_ENABLE
lcd_on = true;
#endif
}
static void i2c_sda_out(bool high)
{
imx233_pinctrl_set_gpio(1, 24, high);
}
