sd.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <device/pci_ops.h>
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
 
#include <soc/device_nvs.h>
#include <soc/iosf.h>
#include <soc/pci_devs.h>
#include <soc/ramstage.h>
#include "chip.h"
 
#define CAP_OVERRIDE_LOW        0xa0
#define CAP_OVERRIDE_HIGH       0xa4
#define USE_CAP_OVERRIDES       (1 << 31)
 
static void sd_init(struct device *dev)
{
        struct soc_intel_baytrail_config *config = config_of(dev);
 
        if (config->sdcard_cap_low != 0 || config->sdcard_cap_high != 0) {
                printk(BIOS_DEBUG, "Overriding SD Card controller caps.\n");
                pci_write_config32(dev, CAP_OVERRIDE_LOW, config->sdcard_cap_low);
                pci_write_config32(dev, CAP_OVERRIDE_HIGH, config->sdcard_cap_high |
                                                           USE_CAP_OVERRIDES);
        }
 
        if (config->scc_acpi_mode)
                scc_enable_acpi_mode(dev, SCC_SD_CTL, SCC_NVS_SD);
}
 
static const struct device_operations device_ops = {
        .read_resources         = pci_dev_read_resources,
        .set_resources          = pci_dev_set_resources,
        .enable_resources       = pci_dev_enable_resources,
        .init                   = sd_init,
        .ops_pci                = &soc_pci_ops,
};
 
static const struct pci_driver southcluster __pci_driver = {
        .ops            = &device_ops,
        .vendor         = PCI_VID_INTEL,
        .device         = SD_DEVID,
};