forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
98 lines
2.3 KiB
98 lines
2.3 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
|
/* |
|
* soc-intel-quirks.h - prototypes for quirk autodetection |
|
* |
|
* Copyright (c) 2019, Intel Corporation. |
|
* |
|
*/ |
|
|
|
#ifndef _SND_SOC_INTEL_QUIRKS_H |
|
#define _SND_SOC_INTEL_QUIRKS_H |
|
|
|
#include <linux/platform_data/x86/soc.h> |
|
|
|
#if IS_ENABLED(CONFIG_X86) |
|
|
|
#include <linux/dmi.h> |
|
#include <asm/iosf_mbi.h> |
|
|
|
static inline bool soc_intel_is_byt_cr(struct platform_device *pdev) |
|
{ |
|
/* |
|
* List of systems which: |
|
* 1. Use a non CR version of the Bay Trail SoC |
|
* 2. Contain at least 6 interrupt resources so that the |
|
* platform_get_resource(pdev, IORESOURCE_IRQ, 5) check below |
|
* succeeds |
|
* 3. Despite 1. and 2. still have their IPC IRQ at index 0 rather then 5 |
|
* |
|
* This needs to be here so that it can be shared between the SST and |
|
* SOF drivers. We rely on the compiler to optimize this out in files |
|
* where soc_intel_is_byt_cr is not used. |
|
*/ |
|
static const struct dmi_system_id force_bytcr_table[] = { |
|
{ /* Lenovo Yoga Tablet 2 series */ |
|
.matches = { |
|
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), |
|
DMI_MATCH(DMI_PRODUCT_FAMILY, "YOGATablet2"), |
|
}, |
|
}, |
|
{} |
|
}; |
|
struct device *dev = &pdev->dev; |
|
int status = 0; |
|
|
|
if (!soc_intel_is_byt()) |
|
return false; |
|
|
|
if (dmi_check_system(force_bytcr_table)) |
|
return true; |
|
|
|
if (iosf_mbi_available()) { |
|
u32 bios_status; |
|
|
|
status = iosf_mbi_read(BT_MBI_UNIT_PMC, /* 0x04 PUNIT */ |
|
MBI_REG_READ, /* 0x10 */ |
|
0x006, /* BIOS_CONFIG */ |
|
&bios_status); |
|
|
|
if (status) { |
|
dev_err(dev, "could not read PUNIT BIOS_CONFIG\n"); |
|
} else { |
|
/* bits 26:27 mirror PMIC options */ |
|
bios_status = (bios_status >> 26) & 3; |
|
|
|
if (bios_status == 1 || bios_status == 3) { |
|
dev_info(dev, "Detected Baytrail-CR platform\n"); |
|
return true; |
|
} |
|
|
|
dev_info(dev, "BYT-CR not detected\n"); |
|
} |
|
} else { |
|
dev_info(dev, "IOSF_MBI not available, no BYT-CR detection\n"); |
|
} |
|
|
|
if (!platform_get_resource(pdev, IORESOURCE_IRQ, 5)) { |
|
/* |
|
* Some devices detected as BYT-T have only a single IRQ listed, |
|
* causing platform_get_irq with index 5 to return -ENXIO. |
|
* The correct IRQ in this case is at index 0, as on BYT-CR. |
|
*/ |
|
dev_info(dev, "Falling back to Baytrail-CR platform\n"); |
|
return true; |
|
} |
|
|
|
return false; |
|
} |
|
|
|
#else |
|
|
|
static inline bool soc_intel_is_byt_cr(struct platform_device *pdev) |
|
{ |
|
return false; |
|
} |
|
|
|
#endif |
|
|
|
#endif /* _SND_SOC_INTEL_QUIRKS_H */
|
|
|