mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-14 17:07:38 +00:00
c726fc01cf
There is a number of users that use uclass_first_device to access the first and (assumed) only device in uclass. Some check the return value of uclass_first_device and also that a device was returned which is exactly what uclass_first_device_err does. Some are not checking that a device was returned and can potentially crash if no device exists in the uclass. Finally there is one that returns NULL on error either way. Convert all of these to use uclass_first_device_err instead, the return value will be removed from uclass_first_device in a later patch. Signed-off-by: Michal Suchanek <msuchanek@suse.de> Reviewed-by: Simon Glass <sjg@chromium.org>
52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2016, Bin Meng <bmeng.cn@gmail.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <errno.h>
|
|
#include <init.h>
|
|
#include <pci.h>
|
|
#include <smsc_sio1007.h>
|
|
#include <asm/ibmpc.h>
|
|
#include <asm/lpc_common.h>
|
|
#include <asm/pci.h>
|
|
#include <asm/arch/pch.h>
|
|
|
|
#define SIO1007_RUNTIME_IOPORT 0x180
|
|
|
|
int board_early_init_f(void)
|
|
{
|
|
struct udevice *pch;
|
|
int ret;
|
|
|
|
ret = uclass_first_device_err(UCLASS_PCH, &pch);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* Initialize LPC interface to turn on superio chipset decode range */
|
|
dm_pci_write_config16(pch, LPC_IO_DEC, COMA_DEC_RANGE | COMB_DEC_RANGE);
|
|
dm_pci_write_config16(pch, LPC_EN, KBC_LPC_EN | COMA_LPC_EN);
|
|
dm_pci_write_config32(pch, LPC_GEN1_DEC, GEN_DEC_RANGE_256B |
|
|
(SIO1007_IOPORT3 & 0xff00) | GEN_DEC_RANGE_EN);
|
|
dm_pci_write_config32(pch, LPC_GEN2_DEC, GEN_DEC_RANGE_16B |
|
|
SIO1007_RUNTIME_IOPORT | GEN_DEC_RANGE_EN);
|
|
|
|
/* Enable legacy serial port at 0x3f8 */
|
|
sio1007_enable_serial(SIO1007_IOPORT3, 0, UART0_BASE, UART0_IRQ);
|
|
|
|
/* Enable SIO1007 runtime I/O port at 0x180 */
|
|
sio1007_enable_runtime(SIO1007_IOPORT3, SIO1007_RUNTIME_IOPORT);
|
|
|
|
/*
|
|
* On Cougar Canyon 2 board, the RS232 transiver connected to serial
|
|
* port 0 (0x3f8) is controlled by a GPIO pin (GPIO10) on the SIO1007.
|
|
* Set the pin value to 1 to enable the RS232 transiver.
|
|
*/
|
|
sio1007_gpio_config(SIO1007_IOPORT3, 0, GPIO_DIR_OUTPUT,
|
|
GPIO_POL_NO_INVERT, GPIO_TYPE_PUSH_PULL);
|
|
sio1007_gpio_set_value(SIO1007_RUNTIME_IOPORT, 0, 1);
|
|
|
|
return 0;
|
|
}
|