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mb/pcengines/apu2: Switch to proper GPIO API 

Use the abstractions <gpio.h> provides.

Change-Id: I348ba43a76287be5b24012ae3dfc28ed783da9c7
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42521
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Michał Żygowski <michal.zygowski@3mdeb.com>
This commit is contained in:
Kyösti Mälkki 2020-06-18 19:26:05 +03:00 committed by Michał Żygowski
parent b8a82496fe
commit df84a28ccc
4 changed files with 45 additions and 100 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

69
src/mainboard/pcengines/apu2/gpio_ftns.c
View File

@ -1,68 +1,9 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#include <stdint.h>
#include <amdblocks/acpimmio.h>
#include <console/console.h>
#include <device/mmio.h>
#include <FchPlatform.h>
#include <gpio.h>
#include "gpio_ftns.h"
static u32 gpio_read_wrapper(u32 iomux_gpio)
{
u32 gpio = iomux_gpio << 2;
if (gpio < 0x100)
return gpio0_read32(gpio & 0xff);
else if (gpio >= 0x100 && gpio < 0x200)
return gpio1_read32(gpio & 0xff);
else if (gpio >= 0x200 && gpio < 0x300)
return gpio2_read32(gpio & 0xff);
die("Invalid GPIO");
}
static void gpio_write_wrapper(u32 iomux_gpio, u32 setting)
{
u32 gpio = iomux_gpio << 2;
if (gpio < 0x100)
gpio0_write32(gpio & 0xff, setting);
else if (gpio >= 0x100 && gpio < 0x200)
gpio1_write32(gpio & 0xff, setting);
else if (gpio >= 0x200 && gpio < 0x300)
gpio2_write32(gpio & 0xff, setting);
}
void configure_gpio(u32 gpio, u8 iomux_ftn, u32 setting)
{
u32 bdata;
bdata = gpio_read_wrapper(gpio);
/* out the data value to prevent glitches */
bdata |= (setting & GPIO_OUTPUT_ENABLE);
gpio_write_wrapper(gpio, bdata);
/* set direction and data value */
bdata |= (setting & (GPIO_OUTPUT_ENABLE | GPIO_OUTPUT_VALUE
| GPIO_PULL_UP_ENABLE | GPIO_PULL_DOWN_ENABLE));
gpio_write_wrapper(gpio, bdata);
iomux_write8(gpio, iomux_ftn & 0x3);
}
u8 read_gpio(u32 gpio)
{
return (gpio_read_wrapper(gpio) & GPIO_PIN_STS) ? 1 : 0;
}
void write_gpio(u32 gpio, u8 value)
{
u32 status = gpio_read_wrapper(gpio);
status &= ~GPIO_OUTPUT_VALUE;
status |= (value > 0) ? GPIO_OUTPUT_VALUE : 0;
gpio_write_wrapper(gpio, status);
}
int get_spd_offset(void)
{
u8 index = 0;
@ -70,10 +11,10 @@ int get_spd_offset(void)
* One SPD file contains all 4 options, determine which index to
* read here, then call into the standard routines.
*/
if (gpio1_read8(0x02) & BIT0)
index |= BIT0;
if (gpio1_read8(0x06) & BIT0)
index |= BIT1;
if (gpio_get(GPIO_49))
index |= 1 << 0;
if (gpio_get(GPIO_50))
index |= 1 << 1;
return index;
}

9
src/mainboard/pcengines/apu2/gpio_ftns.h
View File

@ -3,9 +3,6 @@
#ifndef GPIO_FTNS_H
#define GPIO_FTNS_H
void configure_gpio(u32 gpio, u8 iomux_ftn, u32 setting);
u8 read_gpio(u32 gpio);
void write_gpio(u32 gpio, u8 value);
int get_spd_offset(void);
//
@ -28,10 +25,4 @@ int get_spd_offset(void);
#define GPIO_68 0x48 // PE4_WDIS (SIMSWAP1 on APU5)
#define GPIO_71 0x4D // PROCHOT
#define GPIO_OUTPUT_ENABLE BIT23
#define GPIO_OUTPUT_VALUE BIT22
#define GPIO_PULL_DOWN_ENABLE BIT21
#define GPIO_PULL_UP_ENABLE BIT20
#define GPIO_PIN_STS BIT16
#endif /* GPIO_FTNS_H */

5
src/mainboard/pcengines/apu2/mainboard.c
View File

@ -6,6 +6,7 @@
#include <console/console.h>
#include <device/device.h>
#include <device/pci_def.h>
#include <gpio.h>
#include <southbridge/amd/pi/hudson/hudson.h>
#include <southbridge/amd/pi/hudson/pci_devs.h>
#include <southbridge/amd/pi/hudson/amd_pci_int_defs.h>
@ -265,8 +266,8 @@ static void mainboard_final(void *chip_info)
//
// Turn off LED 2 and LED 3
//
write_gpio(GPIO_58, 1);
write_gpio(GPIO_59, 1);
gpio_set(GPIO_58, 1);
gpio_set(GPIO_59, 1);
}
/*

62
src/mainboard/pcengines/apu2/romstage.c
View File

@ -2,9 +2,10 @@
#include <stdint.h>
#include <amdblocks/acpimmio.h>
#include <console/console.h>
#include <device/pci_def.h>
#include <device/pci_ops.h>
#include <console/console.h>
#include <gpio.h>
#include <northbridge/amd/agesa/state_machine.h>
#include "gpio_ftns.h"
@ -28,52 +29,63 @@ void board_BeforeAgesa(struct sysinfo *cb)
pm_write8(0xea, 1);
}
static void pin_input(gpio_t gpio, u8 iomux_ftn)
{
iomux_write8(gpio, iomux_ftn);
gpio_input(gpio);
}
static void pin_low(gpio_t gpio, u8 iomux_ftn)
{
iomux_write8(gpio, iomux_ftn);
gpio_output(gpio, 0);
}
static void pin_high(gpio_t gpio, u8 iomux_ftn)
{
iomux_write8(gpio, iomux_ftn);
gpio_output(gpio, 1);
}
static void early_lpc_init(void)
{
u32 setting = 0x0;
//
// Configure output disabled, value low, pull up/down disabled
// Configure output disabled, pull up/down disabled
//
if (CONFIG(BOARD_PCENGINES_APU5)) {
configure_gpio(GPIO_22, Function0, setting);
}
if (CONFIG(BOARD_PCENGINES_APU5))
pin_input(GPIO_22, Function0);
if (CONFIG(BOARD_PCENGINES_APU2) ||
CONFIG(BOARD_PCENGINES_APU3) ||
CONFIG(BOARD_PCENGINES_APU4)) {
configure_gpio(GPIO_32, Function0, setting);
pin_input(GPIO_32, Function0);
}
configure_gpio(GPIO_49, Function2, setting);
configure_gpio(GPIO_50, Function2, setting);
configure_gpio(GPIO_71, Function0, setting);
pin_input(GPIO_49, Function2);
pin_input(GPIO_50, Function2);
pin_input(GPIO_71, Function0);
//
// Configure output enabled, value low, pull up/down disabled
//
setting = GPIO_OUTPUT_ENABLE;
if (CONFIG(BOARD_PCENGINES_APU3) ||
CONFIG(BOARD_PCENGINES_APU4)) {
configure_gpio(GPIO_33, Function0, setting);
pin_low(GPIO_33, Function0);
}
configure_gpio(GPIO_57, Function1, setting);
configure_gpio(GPIO_58, Function1, setting);
configure_gpio(GPIO_59, Function3, setting);
pin_low(GPIO_57, Function1);
pin_low(GPIO_58, Function1);
pin_low(GPIO_59, Function3);
//
// Configure output enabled, value high, pull up/down disabled
//
setting = GPIO_OUTPUT_ENABLE | GPIO_OUTPUT_VALUE;
if (CONFIG(BOARD_PCENGINES_APU5)) {
configure_gpio(GPIO_32, Function0, setting);
configure_gpio(GPIO_33, Function0, setting);
pin_high(GPIO_32, Function0);
pin_high(GPIO_33, Function0);
}
configure_gpio(GPIO_51, Function2, setting);
configure_gpio(GPIO_55, Function3, setting);
configure_gpio(GPIO_64, Function2, setting);
configure_gpio(GPIO_68, Function0, setting);
pin_high(GPIO_51, Function2);
pin_high(GPIO_55, Function3);
pin_high(GPIO_64, Function2);
pin_high(GPIO_68, Function0);
}