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

   1/* SPDX-License-Identifier: GPL-2.0-only */
   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)                             \
  19static 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
  33SOC_INTEL_IS_CPU(byt, ATOM_SILVERMONT);
  34SOC_INTEL_IS_CPU(cht, ATOM_AIRMONT);
  35SOC_INTEL_IS_CPU(apl, ATOM_GOLDMONT);
  36SOC_INTEL_IS_CPU(glk, ATOM_GOLDMONT_PLUS);
  37SOC_INTEL_IS_CPU(cml, KABYLAKE_L);
  38
  39static 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
  87static inline bool soc_intel_is_byt_cr(struct platform_device *pdev)
  88{
  89        return false;
  90}
  91
  92static inline bool soc_intel_is_byt(void)
  93{
  94        return false;
  95}
  96
  97static inline bool soc_intel_is_cht(void)
  98{
  99        return false;
 100}
 101
 102static inline bool soc_intel_is_apl(void)
 103{
 104        return false;
 105}
 106
 107static inline bool soc_intel_is_glk(void)
 108{
 109        return false;
 110}
 111
 112static inline bool soc_intel_is_cml(void)
 113{
 114        return false;
 115}
 116#endif
 117
 118 #endif /* _SND_SOC_INTEL_QUIRKS_H */
 119