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+/*
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+ * Copyright (C) 2016, Bin Meng <bmeng.cn@gmail.com>
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+ *
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+ * SPDX-License-Identifier: GPL-2.0+
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+ */
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+
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+#include <common.h>
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+#include <dm.h>
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+#include <errno.h>
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+#include <pci.h>
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+#include <smsc_sio1007.h>
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+#include <asm/ibmpc.h>
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+#include <asm/pci.h>
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+#include <asm/arch/pch.h>
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+
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+#define SIO1007_RUNTIME_IOPORT 0x180
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+
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+int board_early_init_f(void)
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+{
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+ struct udevice *pch;
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+ int ret;
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+
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+ ret = uclass_first_device(UCLASS_PCH, &pch);
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+ if (ret)
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+ return ret;
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+ if (!pch)
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+ return -ENODEV;
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+
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+ /* Initialize LPC interface to turn on superio chipset decode range */
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+ dm_pci_write_config16(pch, LPC_IO_DEC, COMA_DEC_RANGE | COMB_DEC_RANGE);
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+ dm_pci_write_config16(pch, LPC_EN, KBC_LPC_EN | COMA_LPC_EN);
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+ dm_pci_write_config32(pch, LPC_GEN1_DEC, GEN_DEC_RANGE_256B |
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+ (SIO1007_IOPORT3 & 0xff00) | GEN_DEC_RANGE_EN);
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+ dm_pci_write_config32(pch, LPC_GEN2_DEC, GEN_DEC_RANGE_16B |
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+ SIO1007_RUNTIME_IOPORT | GEN_DEC_RANGE_EN);
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+
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+ /* Enable legacy serial port at 0x3f8 */
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+ sio1007_enable_serial(SIO1007_IOPORT3, 0, UART0_BASE, UART0_IRQ);
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+
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+ /* Enable SIO1007 runtime I/O port at 0x180 */
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+ sio1007_enable_runtime(SIO1007_IOPORT3, SIO1007_RUNTIME_IOPORT);
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+
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+ /*
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+ * On Cougar Canyon 2 board, the RS232 transiver connected to serial
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+ * port 0 (0x3f8) is controlled by a GPIO pin (GPIO10) on the SIO1007.
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+ * Set the pin value to 1 to enable the RS232 transiver.
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+ */
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+ sio1007_gpio_config(SIO1007_IOPORT3, 0, GPIO_DIR_OUTPUT,
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+ GPIO_POL_NO_INVERT, GPIO_TYPE_PUSH_PULL);
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+ sio1007_gpio_set_value(SIO1007_RUNTIME_IOPORT, 0, 1);
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+
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+ return 0;
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+}
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+
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+void setup_pch_gpios(u16 gpiobase, const struct pch_gpio_map *gpio)
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+{
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+ return;
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+}
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