mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-09-03 03:13:21 +09:00
189 lines
4.4 KiB
C
189 lines
4.4 KiB
C
![]() |
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright 2019 Google LLC
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*/
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#define LOG_CATEGORY UCLASS_ACPI_PMC
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#include <common.h>
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#include <acpi_s3.h>
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#include <dm.h>
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#include <log.h>
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#include <asm/io.h>
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#include <power/acpi_pmc.h>
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enum {
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PM1_STS = 0x00,
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PM1_EN = 0x02,
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PM1_CNT = 0x04,
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GPE0_STS = 0x20,
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GPE0_EN = 0x30,
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};
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struct tco_regs {
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u32 tco_rld;
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u32 tco_sts;
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u32 tco1_cnt;
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u32 tco_tmr;
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};
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enum {
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TCO_STS_TIMEOUT = 1 << 3,
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TCO_STS_SECOND_TO_STS = 1 << 17,
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TCO1_CNT_HLT = 1 << 11,
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};
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static void pmc_fill_pm_reg_info(struct udevice *dev)
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{
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struct acpi_pmc_upriv *upriv = dev_get_uclass_priv(dev);
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int i;
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upriv->pm1_sts = inw(upriv->acpi_base + PM1_STS);
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upriv->pm1_en = inw(upriv->acpi_base + PM1_EN);
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upriv->pm1_cnt = inw(upriv->acpi_base + PM1_CNT);
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log_debug("pm1_sts: %04x pm1_en: %04x pm1_cnt: %08x\n",
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upriv->pm1_sts, upriv->pm1_en, upriv->pm1_cnt);
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for (i = 0; i < GPE0_REG_MAX; i++) {
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upriv->gpe0_sts[i] = inl(upriv->acpi_base + GPE0_STS + i * 4);
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upriv->gpe0_en[i] = inl(upriv->acpi_base + GPE0_EN + i * 4);
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log_debug("gpe0_sts[%d]: %08x gpe0_en[%d]: %08x\n", i,
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upriv->gpe0_sts[i], i, upriv->gpe0_en[i]);
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}
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}
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int pmc_disable_tco_base(ulong tco_base)
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{
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struct tco_regs *regs = (struct tco_regs *)tco_base;
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debug("tco_base %lx = %x\n", (ulong)®s->tco1_cnt, TCO1_CNT_HLT);
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setio_32(®s->tco1_cnt, TCO1_CNT_HLT);
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return 0;
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}
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int pmc_init(struct udevice *dev)
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{
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const struct acpi_pmc_ops *ops = acpi_pmc_get_ops(dev);
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int ret;
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pmc_fill_pm_reg_info(dev);
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if (!ops->init)
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return -ENOSYS;
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ret = ops->init(dev);
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if (ret)
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return log_msg_ret("Failed to init pmc", ret);
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#ifdef DEBUG
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pmc_dump_info(dev);
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#endif
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return 0;
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}
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int pmc_prev_sleep_state(struct udevice *dev)
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{
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struct acpi_pmc_upriv *upriv = dev_get_uclass_priv(dev);
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const struct acpi_pmc_ops *ops = acpi_pmc_get_ops(dev);
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int prev_sleep_state = ACPI_S0; /* Default to S0 */
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if (upriv->pm1_sts & WAK_STS) {
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switch (acpi_sleep_from_pm1(upriv->pm1_cnt)) {
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case ACPI_S3:
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if (IS_ENABLED(HAVE_ACPI_RESUME))
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prev_sleep_state = ACPI_S3;
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break;
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case ACPI_S5:
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prev_sleep_state = ACPI_S5;
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break;
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default:
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break;
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}
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/* Clear SLP_TYP */
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outl(upriv->pm1_cnt & ~SLP_TYP, upriv->acpi_base + PM1_CNT);
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}
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if (!ops->prev_sleep_state)
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return prev_sleep_state;
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return ops->prev_sleep_state(dev, prev_sleep_state);
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}
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int pmc_disable_tco(struct udevice *dev)
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{
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const struct acpi_pmc_ops *ops = acpi_pmc_get_ops(dev);
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pmc_fill_pm_reg_info(dev);
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if (!ops->disable_tco)
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return -ENOSYS;
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return ops->disable_tco(dev);
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}
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int pmc_global_reset_set_enable(struct udevice *dev, bool enable)
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{
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const struct acpi_pmc_ops *ops = acpi_pmc_get_ops(dev);
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if (!ops->global_reset_set_enable)
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return -ENOSYS;
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return ops->global_reset_set_enable(dev, enable);
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}
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void pmc_dump_info(struct udevice *dev)
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{
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struct acpi_pmc_upriv *upriv = dev_get_uclass_priv(dev);
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int i;
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printf("Device: %s\n", dev->name);
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printf("ACPI base %x, pmc_bar0 %p, pmc_bar2 %p, gpe_cfg %p\n",
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upriv->acpi_base, upriv->pmc_bar0, upriv->pmc_bar2,
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upriv->gpe_cfg);
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printf("pm1_sts: %04x pm1_en: %04x pm1_cnt: %08x\n",
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upriv->pm1_sts, upriv->pm1_en, upriv->pm1_cnt);
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for (i = 0; i < GPE0_REG_MAX; i++) {
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printf("gpe0_sts[%d]: %08x gpe0_en[%d]: %08x\n", i,
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upriv->gpe0_sts[i], i, upriv->gpe0_en[i]);
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}
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printf("prsts: %08x\n", upriv->prsts);
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printf("tco_sts: %04x %04x\n", upriv->tco1_sts, upriv->tco2_sts);
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printf("gen_pmcon1: %08x gen_pmcon2: %08x gen_pmcon3: %08x\n",
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upriv->gen_pmcon1, upriv->gen_pmcon2, upriv->gen_pmcon3);
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}
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int pmc_ofdata_to_uc_platdata(struct udevice *dev)
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{
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struct acpi_pmc_upriv *upriv = dev_get_uclass_priv(dev);
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int ret;
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ret = dev_read_u32(dev, "gpe0-dwx-mask", &upriv->gpe0_dwx_mask);
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if (ret)
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return log_msg_ret("no gpe0-dwx-mask", ret);
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ret = dev_read_u32(dev, "gpe0-dwx-shift-base",
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&upriv->gpe0_dwx_shift_base);
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if (ret)
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return log_msg_ret("no gpe0-dwx-shift-base", ret);
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ret = dev_read_u32(dev, "gpe0-sts", &upriv->gpe0_sts_reg);
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if (ret)
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return log_msg_ret("no gpe0-sts", ret);
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upriv->gpe0_sts_reg += upriv->acpi_base;
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ret = dev_read_u32(dev, "gpe0-en", &upriv->gpe0_en_reg);
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if (ret)
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return log_msg_ret("no gpe0-en", ret);
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upriv->gpe0_en_reg += upriv->acpi_base;
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return 0;
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}
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UCLASS_DRIVER(acpi_pmc) = {
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.id = UCLASS_ACPI_PMC,
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.name = "power-mgr",
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.per_device_auto_alloc_size = sizeof(struct acpi_pmc_upriv),
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};
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