void _backlight_on(void)
{
GPIOB_PIN(1) = (1 << 1);
#ifdef HAVE_LCD_ENABLE
lcd_enable(true);
#endif
}
void _backlight_off(void)
{
#ifdef HAVE_LCD_ENABLE
lcd_enable(false);
#endif
GPIOB_PIN(1) = 0;
}
/* writes a command byte to the LCD */
static void lcd_write_cmd(uint8_t byte)
{
/* wait until not busy */
while (SSP_SR & (1<<4));
/* LCD command mode */
GPIOB_PIN(2) = 0;
/* write data */
SSP_DATA = byte;
/* wait until not busy */
while (SSP_SR & (1<<4));
/* LCD data mode */
GPIOB_PIN(2) = (1 << 2);
}
int button_read_device(void)
{
int buttons = 0;
/* Buttons do not appear to need reset */
/* D6 does not appear to need special handling */
#if 0
GPIOB_PIN(0) = 1; /* set B0 */
int delay = 500;
do {
asm volatile("nop\n");
} while (delay--);
#endif
if GPIOD_PIN(6) /* read D6 */
buttons |= BUTTON_POWER;
#if 0
GPIOB_PIN(0) = 0; /* unset B0 */
delay = 240;
do {
asm volatile("nop\n");
} while (delay--);
#endif
if GPIOA_PIN(1)
buttons |= BUTTON_HOME;
if GPIOA_PIN(6)
buttons |= BUTTON_VOL_DOWN;
if GPIOA_PIN(7)
buttons |= BUTTON_VOL_UP;
if GPIOC_PIN(1)
buttons |= BUTTON_DOWN;
if GPIOC_PIN(2)
buttons |= BUTTON_UP;
if GPIOC_PIN(3)
buttons |= BUTTON_LEFT;
if GPIOC_PIN(4)
buttons |= BUTTON_SELECT;
if GPIOC_PIN(5)
buttons |= BUTTON_RIGHT;
return buttons;
}
bool _backlight_init()
{
/* GPIO B1 controls backlight */
GPIOB_DIR |= (1 << 1);
ascodec_write_pmu(AS3543_BACKLIGHT, 1, 0x91);
GPIOB_PIN(1) = (1 << 1);
return true;
}
void lcd_write_command(int byte)
{
while(SSP_SR & (1<<4)) /* BSY flag */
;
GPIOB_PIN(2) = 0;
SSP_DATA = byte;
while(SSP_SR & (1<<4)) /* BSY flag */
;
}
void lcd_init_device(void)
{
as3525_dbop_init();
GPIOA_DIR |= (0x20|0x1);
GPIOA_DIR &= ~(1<<3);
GPIOA_PIN(3) = 0;
GPIOA_PIN(0) = 1;
GPIOA_PIN(4) = 0;
GPIOB_DIR |= (1<<0)|(1<<2)|(1<<3);
GPIOB_PIN(0) = 1<<0;
GPIOB_PIN(2) = 1<<2;
GPIOB_PIN(3) = 1<<3;
GPIOA_PIN(4) = 1<<4;
GPIOA_PIN(5) = 1<<5;
fuze_display_on();
}
void lcd_write_data(const fb_data* p_bytes, int count)
{
GPIOB_PIN(2) = (1<<2);
while (count--)
{
while(!(SSP_SR & (1<<1))) /* wait until transmit FIFO is not full */
;
SSP_DATA = *p_bytes++;
}
}
void lcd_hw_init(void)
{
CGU_PERI |= CGU_SSP_CLOCK_ENABLE;
SSP_CPSR = AS3525_SSP_PRESCALER; /* OF = 0x10 */
SSP_CR0 = (1<<7) | (1<<6) | 7; /* Motorola SPI frame format, 8 bits */
SSP_CR1 = (1<<3) | (1<<1); /* SSP Operation enabled */
SSP_IMSC = 0; /* No interrupts */
GPIOA_DIR |= (1<<5);
GPIOB_DIR |= (1<<2) | (1<<7);
GPIOB_PIN(7) = 0;
GPIOA_PIN(5) = (1<<5);
}
int lcd_hw_init(void)
{
/* DBOP initialisation, do what OF does */
bitset32(&CCU_IO, 1<<12); /* ?? */
CGU_DBOP |= /*(1<<3)*/ 0x18 | AS3525_DBOP_DIV;
DBOP_CTRL = 0x51004;
DBOP_TIMPOL_01 = 0x36A12F;
DBOP_TIMPOL_23 = 0xE037E037;
GPIOB_DIR |= (1<<2)|(1<<5);
GPIOB_PIN(5) = (1<<5);
return 0;
}
void lcd_write_command(int byte)
{
volatile int i = 0;
while(i<LCD_DELAY) i++;
/* unset D/C# (data or command) */
GPIOB_PIN(2) = 0;
DBOP_TIMPOL_23 = 0xE0370036;
/* Write command */
DBOP_DOUT8 = byte;
/* While push fifo is not empty */
while ((DBOP_STAT & (1<<10)) == 0)
;
DBOP_TIMPOL_23 = 0xE037E037;
}
void lcd_write_data(const fb_data* p_bytes, int count)
{
volatile int i = 0;
while(i<LCD_DELAY) i++;
/* set D/C# (data or command) */
GPIOB_PIN(2) = (1<<2);
while (count--)
{
/* Write pixels */
DBOP_DOUT8 = *p_bytes;
p_bytes++; /* next packed pixels */
/* Wait if push fifo is full */
while ((DBOP_STAT & (1<<6)) != 0);
}
/* While push fifo is not empty */
while ((DBOP_STAT & (1<<10)) == 0);
}
/* initialises the host lcd hardware, returns the lcd type */
static int lcd_hw_init(void)
{
/* configure SSP */
bitset32(&CGU_PERI, CGU_SSP_CLOCK_ENABLE);
SSP_CPSR = 4; /* TODO: use AS3525_SSP_PRESCALER, OF uses 8 */
SSP_CR0 = (0 << 8) | /* SCR, serial clock rate divider = 1 */
(1 << 7) | /* SPH, phase = 1 */
(1 << 6) | /* SPO, polarity = 1 */
(0 << 4) | /* FRF, frame format = motorola SPI */
(7 << 0); /* DSS, data size select = 8 bits */
SSP_CR1 = (1 << 3) | /* SOD, slave output disable = 1 */
(0 << 2) | /* MS, master/slave = master */
(1 << 1) | /* SSE, synchronous serial port enabled = true */
(0 << 0); /* LBM, loopback mode = normal */
SSP_IMSC &= ~0xF; /* disable interrupts */
SSP_DMACR &= ~0x3; /* disable DMA */
/* GPIO A3 is ??? but needs to be set */
GPIOA_DIR |= (1 << 3);
GPIOA_PIN(3) = (1 << 3);
/* configure GPIO B2 (lcd D/C#) as output */
GPIOB_DIR |= (1<<2);
/* configure GPIO B3 (lcd type detect) as input */
GPIOB_DIR &= ~(1<<3);
/* configure GPIO A5 (lcd reset#) as output and perform lcd reset */
GPIOA_DIR |= (1 << 5);
GPIOA_PIN(5) = 0;
sleep(HZ * 50/1000);
GPIOA_PIN(5) = (1 << 5);
/* detect lcd type on GPIO B3 */
return GPIOB_PIN(3) ? 1 : 0;
}
