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https://github.com/brain-hackers/u-boot-brain
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7f1961018c
With driver model GPIOs must be requested before use. Make sure this is done correctly. (Note that the soft SPI part of universal is omitted, since this driver is about to be replaced with a driver-model-aware version) Signed-off-by: Simon Glass <sjg@chromium.org>
108 lines
2.1 KiB
C
108 lines
2.1 KiB
C
/*
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* Copyright (C) 2013 Samsung Electronics
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <fdtdec.h>
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#include <asm/io.h>
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#include <i2c.h>
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#include <lcd.h>
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#include <spi.h>
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#include <errno.h>
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#include <asm/gpio.h>
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#include <asm/arch/board.h>
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#include <asm/arch/cpu.h>
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#include <asm/arch/pinmux.h>
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#include <asm/arch/system.h>
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#include <asm/arch/dp_info.h>
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#include <power/tps65090_pmic.h>
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DECLARE_GLOBAL_DATA_PTR;
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#ifdef CONFIG_USB_EHCI_EXYNOS
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static int board_usb_vbus_init(void)
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{
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/* Enable VBUS power switch */
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gpio_direction_output(EXYNOS5420_GPIO_X26, 1);
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/* VBUS turn ON time */
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mdelay(3);
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return 0;
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}
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#endif
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int exynos_init(void)
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{
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#ifdef CONFIG_USB_EHCI_EXYNOS
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board_usb_vbus_init();
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#endif
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return 0;
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}
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#ifdef CONFIG_LCD
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static int has_edp_bridge(void)
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{
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int node;
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node = fdtdec_next_compatible(gd->fdt_blob, 0, COMPAT_PARADE_PS8625);
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/* No node for bridge in device tree. */
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if (node <= 0)
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return 0;
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/* Default is with bridge ic */
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return 1;
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}
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void exynos_lcd_power_on(void)
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{
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int ret;
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#ifdef CONFIG_POWER_TPS65090
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ret = tps65090_init();
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if (ret < 0) {
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printf("%s: tps65090_init() failed\n", __func__);
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return;
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}
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tps65090_fet_enable(6);
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#endif
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mdelay(5);
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/* TODO(ajaykumar.rs@samsung.com): Use device tree */
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gpio_request(EXYNOS5420_GPIO_X35, "edp_slp#");
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gpio_direction_output(EXYNOS5420_GPIO_X35, 1); /* EDP_SLP# */
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mdelay(10);
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gpio_request(EXYNOS5420_GPIO_Y77, "edp_rst#");
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gpio_direction_output(EXYNOS5420_GPIO_Y77, 1); /* EDP_RST# */
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gpio_request(EXYNOS5420_GPIO_X26, "edp_hpd");
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gpio_direction_input(EXYNOS5420_GPIO_X26); /* EDP_HPD */
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gpio_set_pull(EXYNOS5420_GPIO_X26, S5P_GPIO_PULL_NONE);
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if (has_edp_bridge())
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if (parade_init(gd->fdt_blob))
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printf("%s: ps8625_init() failed\n", __func__);
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}
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void exynos_backlight_on(unsigned int onoff)
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{
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/* For PWM */
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gpio_request(EXYNOS5420_GPIO_B20, "backlight_on");
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gpio_cfg_pin(EXYNOS5420_GPIO_B20, S5P_GPIO_FUNC(0x1));
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gpio_set_value(EXYNOS5420_GPIO_B20, 1);
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#ifdef CONFIG_POWER_TPS65090
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tps65090_fet_enable(1);
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#endif
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}
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#endif
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int board_get_revision(void)
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{
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return 0;
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}
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