static void gpio_init(void)
{
/* Set up the I2C busses. */
exynos_pinmux_i2c0();
exynos_pinmux_i2c1();
exynos_pinmux_i2c2();
exynos_pinmux_i2c3();
exynos_pinmux_i2c4();
exynos_pinmux_i2c7();
/* Set up the GPIOs used to arbitrate for I2C bus 4. */
gpio_set_pull(GPIO_F03, GPIO_PULL_NONE);
gpio_set_pull(GPIO_E04, GPIO_PULL_NONE);
gpio_direction_output(GPIO_F03, 1);
gpio_direction_input(GPIO_E04);
/* Set up the GPIO used to enable the audio codec. */
gpio_set_pull(GPIO_X17, GPIO_PULL_NONE);
gpio_set_pull(GPIO_X15, GPIO_PULL_NONE);
gpio_direction_output(GPIO_X17, 1);
gpio_direction_output(GPIO_X15, 1);
/* Set up the I2S busses. */
exynos_pinmux_i2s0();
exynos_pinmux_i2s1();
}
static void gpio_init(void)
{
/* Set up the I2C busses. */
exynos_pinmux_i2c2();
exynos_pinmux_i2c4();
exynos_pinmux_i2c7();
exynos_pinmux_i2c8();
exynos_pinmux_i2c9();
exynos_pinmux_i2c10();
}
static void parade_dp_bridge_setup(void)
{
int i;
gpio_set_value(dp_pd_l, 1);
gpio_cfg_pin(dp_pd_l, GPIO_OUTPUT);
gpio_set_pull(dp_pd_l, GPIO_PULL_NONE);
gpio_set_value(dp_rst_l, 0);
gpio_cfg_pin(dp_rst_l, GPIO_OUTPUT);
gpio_set_pull(dp_rst_l, GPIO_PULL_NONE);
udelay(10);
gpio_set_value(dp_rst_l, 1);
gpio_set_pull(dp_hpd, GPIO_PULL_NONE);
gpio_cfg_pin(dp_hpd, GPIO_INPUT);
/* De-assert PD (and possibly RST) to power up the bridge. */
gpio_set_value(dp_pd_l, 1);
gpio_set_value(dp_rst_l, 1);
/* Hang around for the bridge to come up. */
mdelay(40);
/* Configure the bridge chip. */
exynos_pinmux_i2c7();
i2c_init(7, 100000, 0x00);
parade_ps8625_bridge_setup(7, 0x48, parade_writes,
ARRAY_SIZE(parade_writes));
/* Spin until the display is ready.
* It's quite important to try really hard to get the display up,
* so be generous. It will typically be ready in only 5 ms. and
* we're out of here.
* If it's not ready after a second, then we're in big trouble.
*/
for(i = 0; i < 1000; i++){
if (gpio_get_value(dp_hpd))
break;
mdelay(1);
}
}
