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 SOC_INTEL_IS_CPU(soc, type)                             \
  19 static inline bool soc_intel_is_##soc(void)                     \
  20 {                                                               \
  21         static const struct x86_cpu_id soc##_cpu_ids[] = {      \
  22                 X86_MATCH_INTEL_FAM6_MODEL(type, NULL),         \
  23                 {}                                              \
  24         };                                                      \
  25         const struct x86_cpu_id *id;                            \
  26                                                                 \
  27         id = x86_match_cpu(soc##_cpu_ids);                      \
  28         if (id)                                                 \
  29                 return true;                                    \
  30         return false;                                           \
  31 }
  32
  33 SOC_INTEL_IS_CPU(byt, ATOM_SILVERMONT);
  34 SOC_INTEL_IS_CPU(cht, ATOM_AIRMONT);
  35 SOC_INTEL_IS_CPU(apl, ATOM_GOLDMONT);
  36 SOC_INTEL_IS_CPU(glk, ATOM_GOLDMONT_PLUS);
  37 SOC_INTEL_IS_CPU(cml, KABYLAKE_L);
  38
  39 static inline bool soc_intel_is_byt_cr(struct platform_device *pdev)
  40 {
  41         struct device *dev = &pdev->dev;
  42         int status = 0;
  43
  44         if (!soc_intel_is_byt())
  45                 return false;
  46
  47         if (iosf_mbi_available()) {
  48                 u32 bios_status;
  49
  50                 status = iosf_mbi_read(BT_MBI_UNIT_PMC, /* 0x04 PUNIT */
  51                                        MBI_REG_READ, /* 0x10 */
  52                                        0x006, /* BIOS_CONFIG */
  53                                        &bios_status);
  54
  55                 if (status) {
  56                         dev_err(dev, "could not read PUNIT BIOS_CONFIG\n");
  57                 } else {
  58                         /* bits 26:27 mirror PMIC options */
  59                         bios_status = (bios_status >> 26) & 3;
  60
  61                         if (bios_status == 1 || bios_status == 3) {
  62                                 dev_info(dev, "Detected Baytrail-CR platform\n");
  63                                 return true;
  64                         }
  65
  66                         dev_info(dev, "BYT-CR not detected\n");
  67                 }
  68         } else {
  69                 dev_info(dev, "IOSF_MBI not available, no BYT-CR detection\n");
  70         }
  71
  72         if (!platform_get_resource(pdev, IORESOURCE_IRQ, 5)) {
  73                 /*
  74                  * Some devices detected as BYT-T have only a single IRQ listed,
  75                  * causing platform_get_irq with index 5 to return -ENXIO.
  76                  * The correct IRQ in this case is at index 0, as on BYT-CR.
  77                  */
  78                 dev_info(dev, "Falling back to Baytrail-CR platform\n");
  79                 return true;
  80         }
  81
  82         return false;
  83 }
  84
  85 #else
  86
  87 static inline bool soc_intel_is_byt_cr(struct platform_device *pdev)
  88 {
  89         return false;
  90 }
  91
  92 static inline bool soc_intel_is_byt(void)
  93 {
  94         return false;
  95 }
  96
  97 static inline bool soc_intel_is_cht(void)
  98 {
  99         return false;
 100 }
 101
 102 static inline bool soc_intel_is_apl(void)
 103 {
 104         return false;
 105 }
 106
 107 static inline bool soc_intel_is_glk(void)
 108 {
 109         return false;
 110 }
 111
 112 static inline bool soc_intel_is_cml(void)
 113 {
 114         return false;
 115 }
 116 #endif
 117
 118  #endif /* _SND_SOC_INTEL_QUIRKS_H */