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) \
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
soc_intel_is_byt_cr(struct platform_device * pdev)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
soc_intel_is_byt_cr(struct platform_device * pdev)87 static inline bool soc_intel_is_byt_cr(struct platform_device *pdev)
88 {
89 return false;
90 }
91
soc_intel_is_byt(void)92 static inline bool soc_intel_is_byt(void)
93 {
94 return false;
95 }
96
soc_intel_is_cht(void)97 static inline bool soc_intel_is_cht(void)
98 {
99 return false;
100 }
101
soc_intel_is_apl(void)102 static inline bool soc_intel_is_apl(void)
103 {
104 return false;
105 }
106
soc_intel_is_glk(void)107 static inline bool soc_intel_is_glk(void)
108 {
109 return false;
110 }
111
soc_intel_is_cml(void)112 static inline bool soc_intel_is_cml(void)
113 {
114 return false;
115 }
116 #endif
117
118 #endif /* _SND_SOC_INTEL_QUIRKS_H */
119
