src/soc/intel/baytrail/sd.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <device/pci_ops.h>
   4 #include <console/console.h>
   5 #include <device/device.h>
   6 #include <device/pci.h>
   7 #include <device/pci_ids.h>
   8
   9 #include <soc/device_nvs.h>
  10 #include <soc/iosf.h>
  11 #include <soc/pci_devs.h>
  12 #include <soc/ramstage.h>
  13 #include "chip.h"
  14
  15 #define CAP_OVERRIDE_LOW        0xa0
  16 #define CAP_OVERRIDE_HIGH       0xa4
  17 #define USE_CAP_OVERRIDES       (1 << 31)
  18
  19 static void sd_init(struct device *dev)
  20 {
  21         struct soc_intel_baytrail_config *config = config_of(dev);
  22
  23         if (config->sdcard_cap_low != 0 || config->sdcard_cap_high != 0) {
  24                 printk(BIOS_DEBUG, "Overriding SD Card controller caps.\n");
  25                 pci_write_config32(dev, CAP_OVERRIDE_LOW, config->sdcard_cap_low);
  26                 pci_write_config32(dev, CAP_OVERRIDE_HIGH, config->sdcard_cap_high |
  27                                                            USE_CAP_OVERRIDES);
  28         }
  29
  30         if (config->scc_acpi_mode)
  31                 scc_enable_acpi_mode(dev, SCC_SD_CTL, SCC_NVS_SD);
  32 }
  33
  34 static const struct device_operations device_ops = {
  35         .read_resources         = pci_dev_read_resources,
  36         .set_resources          = pci_dev_set_resources,
  37         .enable_resources       = pci_dev_enable_resources,
  38         .init                   = sd_init,
  39         .ops_pci                = &soc_pci_ops,
  40 };
  41
  42 static const struct pci_driver southcluster __pci_driver = {
  43         .ops            = &device_ops,
  44         .vendor         = PCI_VID_INTEL,
  45         .device         = SD_DEVID,
  46 };