root/arch/x86/platform/intel-mid/device_libs/platform_mrfld_sd.c

DEFINITIONS

1. mrfld_sdhci_pci_get_data
2. mrfld_sd_init

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * SDHCI platform data initilisation file
   4  *
   5  * (C) Copyright 2016 Intel Corporation
   6  * Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
   7  */
   8 
   9 #include <linux/init.h>
  10 #include <linux/pci.h>
  11 
  12 #include <linux/mmc/sdhci-pci-data.h>
  13 
  14 #include <asm/intel-mid.h>
  15 
  16 #define INTEL_MRFLD_SD                  2
  17 #define INTEL_MRFLD_SD_CD_GPIO          77
  18 
  19 static struct sdhci_pci_data mrfld_sdhci_pci_data = {
  20         .rst_n_gpio     = -EINVAL,
  21         .cd_gpio        = INTEL_MRFLD_SD_CD_GPIO,
  22 };
  23 
  24 static struct sdhci_pci_data *
  25 mrfld_sdhci_pci_get_data(struct pci_dev *pdev, int slotno)
  26 {
  27         unsigned int func = PCI_FUNC(pdev->devfn);
  28 
  29         if (func == INTEL_MRFLD_SD)
  30                 return &mrfld_sdhci_pci_data;
  31 
  32         return NULL;
  33 }
  34 
  35 static int __init mrfld_sd_init(void)
  36 {
  37         if (intel_mid_identify_cpu() != INTEL_MID_CPU_CHIP_TANGIER)
  38                 return -ENODEV;
  39 
  40         sdhci_pci_get_data = mrfld_sdhci_pci_get_data;
  41         return 0;
  42 }
  43 arch_initcall(mrfld_sd_init);