void auo_board_lcd_enable(void)
{
/* Make sure dev is created and initialized properly */
dev = qup_i2c_init(GSBI_ID_8, 100000, 24000000);
if (!dev) {
dprintf(CRITICAL, "Error in qup_i2c_init\n");
while (1) ;
}
/* Setup RESX_N */
uint8_t open_drain_a = expander_read(GPIO_EXPANDER_REG_OPEN_DRAIN_A);
uint8_t dir_a = expander_read(GPIO_EXPANDER_REG_DIR_A);
uint8_t data_a = expander_read(GPIO_EXPANDER_REG_DATA_A);
expander_write(GPIO_EXPANDER_REG_DIR_A, ~0x04 & dir_a);
expander_write(GPIO_EXPANDER_REG_DATA_A, ~0x04 & data_a);
/* Power on the appropiate PMIC LDO power rails */
if (lcd_power_on())
return;
/* Toggle RESX_N */
mdelay(20);
expander_write(GPIO_EXPANDER_REG_DATA_A, 0x04 | data_a);
mdelay(1);
expander_write(GPIO_EXPANDER_REG_DATA_A, ~0x04 & data_a);
mdelay(1);
expander_write(GPIO_EXPANDER_REG_DATA_A, 0x04 | data_a);
mdelay(25);
/* Enable the gpios for LCD */
lcd_gpio_cfg(1);
auo_lcdc_init();
}
void board_lcd_enable(void)
{
int rc = -1;
dev = qup_i2c_init(GSBI_ID_8, 100000, 24000000);
/* Make sure dev is created and initialized properly */
if (!dev) {
while (1) ;
return;
}
/* Store current value of these registers as to not destroy their previous
state. */
uint8_t open_drain_a = expander_read(GPIO_EXPANDER_REG_OPEN_DRAIN_A);
uint8_t dir_b = expander_read(GPIO_EXPANDER_REG_DIR_B);
uint8_t dir_a = expander_read(GPIO_EXPANDER_REG_DIR_A);
uint8_t data_b = expander_read(GPIO_EXPANDER_REG_DATA_B);
uint8_t data_a = expander_read(GPIO_EXPANDER_REG_DATA_A);
/* Set the LVDS_SHUTDOWN_N to open drain and output low. */
dprintf(INFO, "Enable lvds_shutdown_n line for Open Drain.\n");
expander_write(GPIO_EXPANDER_REG_OPEN_DRAIN_A, 0x04 | open_drain_a);
dprintf(INFO, "Enable lvds_shutdown_n line for output.\n");
expander_write(GPIO_EXPANDER_REG_DIR_A, ~0x04 & dir_a);
dprintf(INFO, "Drive the LVDS_SHUTDOWN_N pin high here.\n");
expander_write(GPIO_EXPANDER_REG_DATA_A, 0x04 | data_a);
/* Turn on the VREG_L2B to 3.3V. */
/* Power on the appropiate PMIC LDO power rails */
if (lcd_power_on())
return;
/* Enable the GPIO as LCDC mode LCD. */
lcd_gpio_cfg(1);
/* Arbitrary delay */
udelay(20000);
/* Set the GPIOs needed for backlight */
bl_gpio_init();
/* Set backlight level with API (to 8 by default) */
rc = panel_set_backlight(8);
if(rc)
dprintf(CRITICAL,"Error in setting panel backlight\n");
dprintf(INFO, "Enable BACKLIGHT_EN line for output.\n");
expander_write(GPIO_EXPANDER_REG_DIR_B, ~0x10 & dir_b);
dprintf(INFO, "Drive BACKLIGHT_EN to high\n");
expander_write(GPIO_EXPANDER_REG_DATA_B, 0x10 | data_b);
}
void board_lcd_enable(void)
{
dev = qup_i2c_init(GSBI8_BASE, 100000, 24000000);
/* Make sure dev is created and initialized properly */
if (!dev) {
while (1) ;
return;
}
/* Store current value of these registers as to not destroy their previous
state. */
uint8_t open_drain_a = expander_read(GPIO_EXPANDER_REG_OPEN_DRAIN_A);
uint8_t dir_b = expander_read(GPIO_EXPANDER_REG_DIR_B);
uint8_t dir_a = expander_read(GPIO_EXPANDER_REG_DIR_A);
uint8_t data_b = expander_read(GPIO_EXPANDER_REG_DATA_B);
uint8_t data_a = expander_read(GPIO_EXPANDER_REG_DATA_A);
/* Set the LVDS_SHUTDOWN_N to open drain and output low. */
dprintf(INFO, "Enable lvds_shutdown_n line for Open Drain.\n");
expander_write(GPIO_EXPANDER_REG_OPEN_DRAIN_A, 0x04 | open_drain_a);
dprintf(INFO, "Enable lvds_shutdown_n line for output.\n");
expander_write(GPIO_EXPANDER_REG_DIR_A, ~0x04 & dir_a);
dprintf(INFO, "Drive the LVDS_SHUTDOWN_N pin high here.\n");
expander_write(GPIO_EXPANDER_REG_DATA_A, 0x04 | data_a);
/* Turn on the VREG_L2B to 3.3V. */
/* Power on the appropiate PMIC LDO power rails */
if (lcd_power_on())
return;
/* Enable the GPIO as LCDC mode LCD. */
lcd_gpio_cfg(1);
/* Arbitrary delay */
udelay(20000);
/* Set the backlight duty cycle via the PM8058 LPG_DRV1 and LPG_DRV2 */
bl_duty_cycle_init();
dprintf(INFO, "Enable BACKLIGHT_EN line for output.\n");
expander_write(GPIO_EXPANDER_REG_DIR_B, ~0x10 & dir_b);
dprintf(INFO, "Drive BACKLIGHT_EN to high\n");
expander_write(GPIO_EXPANDER_REG_DATA_B, 0x10 | data_b);
}
uint8_t expander_write(uint8_t addr, uint8_t val)
{
uint8_t data_buf[] = { addr, val };
/* Create a i2c_msg buffer, that is used to put the controller into write
mode and then to write some data. */
struct i2c_msg msg_buf[] = { {CORE_GPIO_EXPANDER_I2C_ADDRESS,
I2C_M_WR, 2, data_buf}
};
qup_i2c_xfer(dev, msg_buf, 1);
/* Double check that the write worked. */
if (val != expander_read(addr)) {
return -1;
}
return 0;
}
