C++ (Cpp) exynos_dp_bridge_setupの例

コード例 #1

ファイル: mainboard.c プロジェクト: 0ida/coreboot

/* this happens after cpu_init where exynos resources are set */
static void mainboard_init(device_t dev)
{
	int dp_tries;
	struct s5p_dp_device dp_device = {
		.base = exynos_dp1,
		.video_info = &dp_video_info,
	};
	void *fb_addr = (void *)(get_fb_base_kb() * KiB);

	prepare_usb();
	gpio_init();
	setup_storage();

	i2c_init(TPS65090_BUS, I2C_0_SPEED, I2C_SLAVE);
	i2c_init(7, I2C_0_SPEED, I2C_SLAVE);

	tmu_init(&exynos5250_tmu_info);

	/* Clock Gating all the unused IP's to save power */
	clock_gate();

	/* Disable USB3.0 PLL to save 250mW of power */
	disable_usb30_pll();

	sdmmc_vdd();

	set_vbe_mode_info_valid(&edid, (uintptr_t)fb_addr);

	lcd_vdd();

	// FIXME: should timeout
	do {
		udelay(50);
	} while (!exynos_dp_hotplug());

	exynos_dp_bridge_setup();
	for (dp_tries = 1; dp_tries <= MAX_DP_TRIES; dp_tries++) {
		exynos_dp_bridge_init();
		if (exynos_dp_hotplug()) {
			exynos_dp_reset();
			continue;
		}

		if (dp_controller_init(&dp_device))
			continue;

		udelay(LCD_T3_DELAY_MS * 1000);

		backlight_vdd();
		backlight_pwm();
		backlight_en();
		/* if we're here, we're successful */
		break;
	}

	if (dp_tries > MAX_DP_TRIES)
		printk(BIOS_ERR, "%s: Failed to set up displayport\n", __func__);

	setup_usb();

	// Uncomment to get excessive GPIO output:
	// gpio_info();
}

コード例 #2

ファイル: mainboard.c プロジェクト: B-Rich/coreboot

/* this happens after cpu_init where exynos resources are set */
static void mainboard_init(device_t dev)
{
	int dp_tries;
	struct s5p_dp_device dp_device = {
		.base = (struct exynos5_dp *)EXYNOS5250_DP1_BASE,
		.video_info = &dp_video_info,
	};
	void *fb_addr = (void *)(get_fb_base_kb() * KiB);

	gpio_init();

	i2c_init(TPS65090_BUS, I2C_0_SPEED, I2C_SLAVE);
	i2c_init(7, I2C_0_SPEED, I2C_SLAVE);

	tmu_init(&exynos5250_tmu_info);

	/* Clock Gating all the unused IP's to save power */
	clock_gate();

	/* Disable USB3.0 PLL to save 250mW of power */
	disable_usb30_pll();

	set_vbe_mode_info_valid(&edid, (uintptr_t)fb_addr);

	lcd_vdd();

	// FIXME: should timeout
	do {
		udelay(50);
	} while (!exynos_dp_hotplug());

	exynos_dp_bridge_setup();
	for (dp_tries = 1; dp_tries <= MAX_DP_TRIES; dp_tries++) {
		exynos_dp_bridge_init();
		if (exynos_dp_hotplug()) {
			exynos_dp_reset();
			continue;
		}

		if (dp_controller_init(&dp_device))
			continue;

		udelay(LCD_T3_DELAY_MS * 1000);

		backlight_vdd();
		backlight_pwm();
		backlight_en();
		/* if we're here, we're successful */
		break;
	}

	if (dp_tries > MAX_DP_TRIES)
		printk(BIOS_ERR, "%s: Failed to set up displayport\n", __func__);

	// Uncomment to get excessive GPIO output:
	// gpio_info();
}

static void mainboard_enable(device_t dev)
{
	dev->ops->init = &mainboard_init;

	/* set up dcache and MMU */
	/* FIXME: this should happen via resource allocator */
	exynos5250_config_l2_cache();
	mmu_init();
	mmu_config_range(0, DRAM_START, DCACHE_OFF);
	mmu_config_range(DRAM_START, DRAM_SIZE, DCACHE_WRITEBACK);
	mmu_config_range(DRAM_END, 4096 - DRAM_END, DCACHE_OFF);
	dcache_invalidate_all();
	dcache_mmu_enable();

	/* this is going to move, but we must have it now and we're
	 * not sure where */
	exception_init();

	const unsigned epll_hz = 192000000;
	const unsigned sample_rate = 48000;
	const unsigned lr_frame_size = 256;
	clock_epll_set_rate(epll_hz);
	clock_select_i2s_clk_source();
	clock_set_i2s_clk_prescaler(epll_hz, sample_rate * lr_frame_size);

	power_enable_xclkout();
}