sound/soc/intel/common/soc-intel-quirks.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * soc-intel-quirks.h - prototypes for quirk autodetection
   4  *
   5  * Copyright (c) 2019, Intel Corporation.
   6  *
   7  */
   8
   9 #ifndef _SND_SOC_INTEL_QUIRKS_H
  10 #define _SND_SOC_INTEL_QUIRKS_H
  11
  12 #if IS_ENABLED(CONFIG_X86)
  13
  14 #include <asm/cpu_device_id.h>
  15 #include <asm/intel-family.h>
  16 #include <asm/iosf_mbi.h>
  17
  18 #define ICPU(model)     { X86_VENDOR_INTEL, 6, model, X86_FEATURE_ANY, }
  19
  20 #define SOC_INTEL_IS_CPU(soc, type)                             \
  21 static inline bool soc_intel_is_##soc(void)                     \
  22 {                                                               \
  23         static const struct x86_cpu_id soc##_cpu_ids[] = {      \
  24                 ICPU(type),                                     \
  25                 {}                                              \
  26         };                                                      \
  27         const struct x86_cpu_id *id;                            \
  28                                                                 \
  29         id = x86_match_cpu(soc##_cpu_ids);                      \
  30         if (id)                                                 \
  31                 return true;                                    \
  32         return false;                                           \
  33 }
  34
  35 SOC_INTEL_IS_CPU(byt, INTEL_FAM6_ATOM_SILVERMONT);
  36 SOC_INTEL_IS_CPU(cht, INTEL_FAM6_ATOM_AIRMONT);
  37 SOC_INTEL_IS_CPU(apl, INTEL_FAM6_ATOM_GOLDMONT);
  38 SOC_INTEL_IS_CPU(glk, INTEL_FAM6_ATOM_GOLDMONT_PLUS);
  39
  40 static inline bool soc_intel_is_byt_cr(struct platform_device *pdev)
  41 {
  42         struct device *dev = &pdev->dev;
  43         int status = 0;
  44
  45         if (!soc_intel_is_byt())
  46                 return false;
  47
  48         if (iosf_mbi_available()) {
  49                 u32 bios_status;
  50
  51                 status = iosf_mbi_read(BT_MBI_UNIT_PMC, /* 0x04 PUNIT */
  52                                        MBI_REG_READ, /* 0x10 */
  53                                        0x006, /* BIOS_CONFIG */
  54                                        &bios_status);
  55
  56                 if (status) {
  57                         dev_err(dev, "could not read PUNIT BIOS_CONFIG\n");
  58                 } else {
  59                         /* bits 26:27 mirror PMIC options */
  60                         bios_status = (bios_status >> 26) & 3;
  61
  62                         if (bios_status == 1 || bios_status == 3) {
  63                                 dev_info(dev, "Detected Baytrail-CR platform\n");
  64                                 return true;
  65                         }
  66
  67                         dev_info(dev, "BYT-CR not detected\n");
  68                 }
  69         } else {
  70                 dev_info(dev, "IOSF_MBI not available, no BYT-CR detection\n");
  71         }
  72
  73         if (!platform_get_resource(pdev, IORESOURCE_IRQ, 5)) {
  74                 /*
  75                  * Some devices detected as BYT-T have only a single IRQ listed,
  76                  * causing platform_get_irq with index 5 to return -ENXIO.
  77                  * The correct IRQ in this case is at index 0, as on BYT-CR.
  78                  */
  79                 dev_info(dev, "Falling back to Baytrail-CR platform\n");
  80                 return true;
  81         }
  82
  83         return false;
  84 }
  85
  86 #else
  87
  88 static inline bool soc_intel_is_byt_cr(struct platform_device *pdev)
  89 {
  90         return false;
  91 }
  92
  93 static inline bool soc_intel_is_byt(void)
  94 {
  95         return false;
  96 }
  97
  98 static inline bool soc_intel_is_cht(void)
  99 {
 100         return false;
 101 }
 102
 103 static inline bool soc_intel_is_apl(void)
 104 {
 105         return false;
 106 }
 107
 108 static inline bool soc_intel_is_glk(void)
 109 {
 110         return false;
 111 }
 112
 113 #endif
 114
 115  #endif /* _SND_SOC_INTEL_QUIRKS_H */