mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-06 05:04:26 +00:00
3b65ee34b9
Add a simple PMC for sandbox to permit tests to run. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
97 lines
2.3 KiB
C
97 lines
2.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Sandbox PMC for testing
|
|
*
|
|
* Copyright 2019 Google LLC
|
|
*/
|
|
|
|
#define LOG_CATEGORY UCLASS_ACPI_PMC
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <asm/io.h>
|
|
#include <power/acpi_pmc.h>
|
|
|
|
#define GPIO_GPE_CFG 0x1050
|
|
|
|
/* Memory mapped IO registers behind PMC_BASE_ADDRESS */
|
|
#define PRSTS 0x1000
|
|
#define GEN_PMCON1 0x1020
|
|
#define GEN_PMCON2 0x1024
|
|
#define GEN_PMCON3 0x1028
|
|
|
|
/* Offset of TCO registers from ACPI base I/O address */
|
|
#define TCO_REG_OFFSET 0x60
|
|
#define TCO1_STS 0x64
|
|
#define TCO2_STS 0x66
|
|
#define TCO1_CNT 0x68
|
|
#define TCO2_CNT 0x6a
|
|
|
|
struct sandbox_pmc_priv {
|
|
ulong base;
|
|
};
|
|
|
|
static int sandbox_pmc_fill_power_state(struct udevice *dev)
|
|
{
|
|
struct acpi_pmc_upriv *upriv = dev_get_uclass_priv(dev);
|
|
|
|
upriv->tco1_sts = inw(upriv->acpi_base + TCO1_STS);
|
|
upriv->tco2_sts = inw(upriv->acpi_base + TCO2_STS);
|
|
|
|
upriv->prsts = readl(upriv->pmc_bar0 + PRSTS);
|
|
upriv->gen_pmcon1 = readl(upriv->pmc_bar0 + GEN_PMCON1);
|
|
upriv->gen_pmcon2 = readl(upriv->pmc_bar0 + GEN_PMCON2);
|
|
upriv->gen_pmcon3 = readl(upriv->pmc_bar0 + GEN_PMCON3);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sandbox_prev_sleep_state(struct udevice *dev, int prev_sleep_state)
|
|
{
|
|
return prev_sleep_state;
|
|
}
|
|
|
|
static int sandbox_disable_tco(struct udevice *dev)
|
|
{
|
|
struct acpi_pmc_upriv *upriv = dev_get_uclass_priv(dev);
|
|
|
|
pmc_disable_tco_base(upriv->acpi_base + TCO_REG_OFFSET);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sandbox_pmc_probe(struct udevice *dev)
|
|
{
|
|
struct acpi_pmc_upriv *upriv = dev_get_uclass_priv(dev);
|
|
struct udevice *bus;
|
|
ulong base;
|
|
|
|
uclass_first_device(UCLASS_PCI, &bus);
|
|
base = dm_pci_read_bar32(dev, 0);
|
|
if (base == FDT_ADDR_T_NONE)
|
|
return log_msg_ret("No base address", -EINVAL);
|
|
upriv->pmc_bar0 = map_sysmem(base, 0x2000);
|
|
upriv->gpe_cfg = (u32 *)(upriv->pmc_bar0 + GPIO_GPE_CFG);
|
|
|
|
return pmc_ofdata_to_uc_platdata(dev);
|
|
}
|
|
|
|
static struct acpi_pmc_ops sandbox_pmc_ops = {
|
|
.init = sandbox_pmc_fill_power_state,
|
|
.prev_sleep_state = sandbox_prev_sleep_state,
|
|
.disable_tco = sandbox_disable_tco,
|
|
};
|
|
|
|
static const struct udevice_id sandbox_pmc_ids[] = {
|
|
{ .compatible = "sandbox,pmc" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(pmc_sandbox) = {
|
|
.name = "pmc_sandbox",
|
|
.id = UCLASS_ACPI_PMC,
|
|
.of_match = sandbox_pmc_ids,
|
|
.probe = sandbox_pmc_probe,
|
|
.ops = &sandbox_pmc_ops,
|
|
.priv_auto_alloc_size = sizeof(struct sandbox_pmc_priv),
|
|
};
|