mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-24 20:09:43 +09:00
41575d8e4c
This construct is quite long-winded. In earlier days it made some sense since auto-allocation was a strange concept. But with driver model now used pretty universally, we can shorten this to 'auto'. This reduces verbosity and makes it easier to read. Coincidentally it also ensures that every declaration is on one line, thus making dtoc's job easier. Signed-off-by: Simon Glass <sjg@chromium.org>
146 lines
3.4 KiB
C
146 lines
3.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2015, Google, Inc
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* Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
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*/
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#include <common.h>
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#include <dm.h>
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#include <errno.h>
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#include <log.h>
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#include <malloc.h>
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#include <mapmem.h>
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#include <sdhci.h>
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#include <acpi/acpigen.h>
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#include <acpi/acpi_device.h>
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#include <acpi/acpi_dp.h>
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#include <asm-generic/gpio.h>
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#include <dm/acpi.h>
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struct pci_mmc_plat {
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struct mmc_config cfg;
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struct mmc mmc;
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};
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struct pci_mmc_priv {
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struct sdhci_host host;
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void *base;
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struct gpio_desc cd_gpio;
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};
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static int pci_mmc_probe(struct udevice *dev)
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{
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struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
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struct pci_mmc_plat *plat = dev_get_platdata(dev);
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struct pci_mmc_priv *priv = dev_get_priv(dev);
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struct sdhci_host *host = &priv->host;
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int ret;
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host->ioaddr = (void *)dm_pci_map_bar(dev, PCI_BASE_ADDRESS_0,
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PCI_REGION_MEM);
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host->name = dev->name;
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host->mmc = &plat->mmc;
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host->mmc->dev = dev;
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ret = sdhci_setup_cfg(&plat->cfg, host, 0, 0);
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if (ret)
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return ret;
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host->mmc->priv = &priv->host;
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upriv->mmc = host->mmc;
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return sdhci_probe(dev);
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}
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static int pci_mmc_ofdata_to_platdata(struct udevice *dev)
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{
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struct pci_mmc_priv *priv = dev_get_priv(dev);
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gpio_request_by_name(dev, "cd-gpios", 0, &priv->cd_gpio, GPIOD_IS_IN);
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return 0;
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}
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static int pci_mmc_bind(struct udevice *dev)
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{
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struct pci_mmc_plat *plat = dev_get_platdata(dev);
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return sdhci_bind(dev, &plat->mmc, &plat->cfg);
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}
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static int pci_mmc_acpi_fill_ssdt(const struct udevice *dev,
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struct acpi_ctx *ctx)
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{
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struct pci_mmc_priv *priv = dev_get_priv(dev);
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char path[ACPI_PATH_MAX];
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struct acpi_gpio gpio;
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struct acpi_dp *dp;
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int ret;
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if (!dev_of_valid(dev))
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return 0;
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ret = gpio_get_acpi(&priv->cd_gpio, &gpio);
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if (ret)
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return log_msg_ret("gpio", ret);
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gpio.type = ACPI_GPIO_TYPE_INTERRUPT;
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gpio.pull = ACPI_GPIO_PULL_NONE;
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gpio.irq.mode = ACPI_IRQ_EDGE_TRIGGERED;
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gpio.irq.polarity = ACPI_IRQ_ACTIVE_BOTH;
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gpio.irq.shared = ACPI_IRQ_SHARED;
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gpio.irq.wake = ACPI_IRQ_WAKE;
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gpio.interrupt_debounce_timeout = 10000; /* 100ms */
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/* Use device path as the Scope for the SSDT */
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ret = acpi_device_path(dev, path, sizeof(path));
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if (ret)
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return log_msg_ret("path", ret);
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acpigen_write_scope(ctx, path);
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acpigen_write_name(ctx, "_CRS");
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/* Write GpioInt() as default (if set) or custom from devicetree */
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acpigen_write_resourcetemplate_header(ctx);
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acpi_device_write_gpio(ctx, &gpio);
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acpigen_write_resourcetemplate_footer(ctx);
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/* Bind the cd-gpio name to the GpioInt() resource */
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dp = acpi_dp_new_table("_DSD");
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if (!dp)
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return -ENOMEM;
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acpi_dp_add_gpio(dp, "cd-gpio", path, 0, 0, 1);
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ret = acpi_dp_write(ctx, dp);
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if (ret)
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return log_msg_ret("cd", ret);
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acpigen_pop_len(ctx);
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return 0;
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}
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struct acpi_ops pci_mmc_acpi_ops = {
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.fill_ssdt = pci_mmc_acpi_fill_ssdt,
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};
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static const struct udevice_id pci_mmc_match[] = {
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{ .compatible = "intel,apl-sd" },
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{ }
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};
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U_BOOT_DRIVER(pci_mmc) = {
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.name = "pci_mmc",
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.id = UCLASS_MMC,
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.of_match = pci_mmc_match,
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.bind = pci_mmc_bind,
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.ofdata_to_platdata = pci_mmc_ofdata_to_platdata,
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.probe = pci_mmc_probe,
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.ops = &sdhci_ops,
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.priv_auto = sizeof(struct pci_mmc_priv),
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.platdata_auto = sizeof(struct pci_mmc_plat),
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ACPI_OPS_PTR(&pci_mmc_acpi_ops)
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};
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static struct pci_device_id mmc_supported[] = {
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{ PCI_DEVICE_CLASS(PCI_CLASS_SYSTEM_SDHCI << 8, 0xffff00) },
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{},
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};
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U_BOOT_PCI_DEVICE(pci_mmc, mmc_supported);
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