mirror of
https://github.com/AsahiLinux/u-boot
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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* From coreboot src/soc/intel/broadwell/romstage/power_state.c
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*
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* Copyright (C) 2016 Google, Inc.
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*/
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#include <common.h>
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#include <pci.h>
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#include <asm/io.h>
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#include <asm/intel_regs.h>
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#include <asm/arch/iomap.h>
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#include <asm/arch/lpc.h>
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#include <asm/arch/pch.h>
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#include <asm/arch/pm.h>
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/* Return 0, 3, or 5 to indicate the previous sleep state. */
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static int prev_sleep_state(struct chipset_power_state *ps)
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{
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/* Default to S0. */
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int prev_sleep_state = SLEEP_STATE_S0;
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if (ps->pm1_sts & WAK_STS) {
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switch ((ps->pm1_cnt & SLP_TYP) >> SLP_TYP_SHIFT) {
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#if CONFIG_HAVE_ACPI_RESUME
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case SLP_TYP_S3:
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prev_sleep_state = SLEEP_STATE_S3;
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break;
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#endif
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case SLP_TYP_S5:
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prev_sleep_state = SLEEP_STATE_S5;
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break;
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}
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/* Clear SLP_TYP. */
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outl(ps->pm1_cnt & ~(SLP_TYP), ACPI_BASE_ADDRESS + PM1_CNT);
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}
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if (ps->gen_pmcon3 & (PWR_FLR | SUS_PWR_FLR))
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prev_sleep_state = SLEEP_STATE_S5;
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return prev_sleep_state;
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}
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static void dump_power_state(struct chipset_power_state *ps)
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{
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debug("PM1_STS: %04x\n", ps->pm1_sts);
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debug("PM1_EN: %04x\n", ps->pm1_en);
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debug("PM1_CNT: %08x\n", ps->pm1_cnt);
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debug("TCO_STS: %04x %04x\n", ps->tco1_sts, ps->tco2_sts);
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debug("GPE0_STS: %08x %08x %08x %08x\n",
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ps->gpe0_sts[0], ps->gpe0_sts[1],
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ps->gpe0_sts[2], ps->gpe0_sts[3]);
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debug("GPE0_EN: %08x %08x %08x %08x\n",
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ps->gpe0_en[0], ps->gpe0_en[1],
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ps->gpe0_en[2], ps->gpe0_en[3]);
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debug("GEN_PMCON: %04x %04x %04x\n",
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ps->gen_pmcon1, ps->gen_pmcon2, ps->gen_pmcon3);
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debug("Previous Sleep State: S%d\n",
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ps->prev_sleep_state);
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}
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/* Fill power state structure from ACPI PM registers */
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void power_state_get(struct udevice *pch_dev, struct chipset_power_state *ps)
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{
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ps->pm1_sts = inw(ACPI_BASE_ADDRESS + PM1_STS);
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ps->pm1_en = inw(ACPI_BASE_ADDRESS + PM1_EN);
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ps->pm1_cnt = inl(ACPI_BASE_ADDRESS + PM1_CNT);
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ps->tco1_sts = inw(ACPI_BASE_ADDRESS + TCO1_STS);
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ps->tco2_sts = inw(ACPI_BASE_ADDRESS + TCO2_STS);
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ps->gpe0_sts[0] = inl(ACPI_BASE_ADDRESS + GPE0_STS(0));
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ps->gpe0_sts[1] = inl(ACPI_BASE_ADDRESS + GPE0_STS(1));
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ps->gpe0_sts[2] = inl(ACPI_BASE_ADDRESS + GPE0_STS(2));
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ps->gpe0_sts[3] = inl(ACPI_BASE_ADDRESS + GPE0_STS(3));
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ps->gpe0_en[0] = inl(ACPI_BASE_ADDRESS + GPE0_EN(0));
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ps->gpe0_en[1] = inl(ACPI_BASE_ADDRESS + GPE0_EN(1));
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ps->gpe0_en[2] = inl(ACPI_BASE_ADDRESS + GPE0_EN(2));
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ps->gpe0_en[3] = inl(ACPI_BASE_ADDRESS + GPE0_EN(3));
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dm_pci_read_config16(pch_dev, GEN_PMCON_1, &ps->gen_pmcon1);
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dm_pci_read_config16(pch_dev, GEN_PMCON_2, &ps->gen_pmcon2);
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dm_pci_read_config16(pch_dev, GEN_PMCON_3, &ps->gen_pmcon3);
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ps->prev_sleep_state = prev_sleep_state(ps);
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dump_power_state(ps);
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}
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