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ASoC: Intel: Atom: auto-detection of Baytrail-CR

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BYT-CR needs special handling to deal with BIOS issues.
For some reason the IPC interrupt index is also modified from
the Baytrail-T reference.

Use PUNIT BIOS config bits to infer platform details.
Assume regular Baytrail configs if status is incorrect or
CONFIG_IOSF_MBI is not enabled.

SSP0 routing issues are solved without dedicated firmware
in following patches

Tested on Asus T100TA and T100TAF.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Pierre-Louis Bossart 2016-08-12 16:27:47 -05:00 committed by Mark Brown
parent 5d98f58fd6
commit a68bc0d43e
1 changed files with 78 additions and 4 deletions
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82
sound/soc/intel/atom/sst/sst_acpi.c
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@ -39,6 +39,8 @@
#include <acpi/platform/aclinux.h>
#include <acpi/actypes.h>
#include <acpi/acpi_bus.h>
#include <asm/cpu_device_id.h>
#include <asm/iosf_mbi.h>
#include "../sst-mfld-platform.h"
#include "../../common/sst-dsp.h"
#include "../../common/sst-acpi.h"
@ -113,6 +115,28 @@ static const struct sst_res_info byt_rvp_res_info = {
.acpi_ipc_irq_index = 5,
};
/* BYTCR has different BIOS from BYT */
static const struct sst_res_info bytcr_res_info = {
.shim_offset = 0x140000,
.shim_size = 0x000100,
.shim_phy_addr = SST_BYT_SHIM_PHY_ADDR,
.ssp0_offset = 0xa0000,
.ssp0_size = 0x1000,
.dma0_offset = 0x98000,
.dma0_size = 0x4000,
.dma1_offset = 0x9c000,
.dma1_size = 0x4000,
.iram_offset = 0x0c0000,
.iram_size = 0x14000,
.dram_offset = 0x100000,
.dram_size = 0x28000,
.mbox_offset = 0x144000,
.mbox_size = 0x1000,
.acpi_lpe_res_index = 0,
.acpi_ddr_index = 2,
.acpi_ipc_irq_index = 0
};
static struct sst_platform_info byt_rvp_platform_data = {
.probe_data = &byt_fwparse_info,
.ipc_info = &byt_ipc_info,
@ -215,6 +239,47 @@ static int sst_platform_get_resources(struct intel_sst_drv *ctx)
return 0;
}
static int is_byt_cr(struct device *dev, bool *bytcr)
{
int status = 0;
if (IS_ENABLED(CONFIG_IOSF_MBI)) {
static const struct x86_cpu_id cpu_ids[] __initconst = {
{ X86_VENDOR_INTEL, 6, 55 }, /* Valleyview, Bay Trail */
{}
};
int status;
u32 bios_status;
if (!x86_match_cpu(cpu_ids) || !iosf_mbi_available()) {
/* bail silently */
return 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))
*bytcr = true;
else
dev_info(dev, "BYT-CR not detected\n");
}
} else {
dev_info(dev, "IOSF_MBI not enabled, no BYT-CR detection\n");
}
return status;
}
static int sst_acpi_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@ -226,6 +291,7 @@ static int sst_acpi_probe(struct platform_device *pdev)
struct platform_device *plat_dev;
struct sst_platform_info *pdata;
unsigned int dev_id;
bool bytcr = false;
id = acpi_match_device(dev->driver->acpi_match_table, dev);
if (!id)
@ -251,6 +317,18 @@ static int sst_acpi_probe(struct platform_device *pdev)
dev_dbg(dev, "ACPI device id: %x\n", dev_id);
ret = sst_alloc_drv_context(&ctx, dev, dev_id);
if (ret < 0)
return ret;
ret = is_byt_cr(dev, &bytcr);
if (!((ret < 0) || (bytcr == false))) {
dev_info(dev, "Detected Baytrail-CR platform\n");
/* override resource info */
byt_rvp_platform_data.res_info = &bytcr_res_info;
}
plat_dev = platform_device_register_data(dev, pdata->platform, -1,
NULL, 0);
if (IS_ERR(plat_dev)) {
@ -271,10 +349,6 @@ static int sst_acpi_probe(struct platform_device *pdev)
return PTR_ERR(mdev);
}
ret = sst_alloc_drv_context(&ctx, dev, dev_id);
if (ret < 0)
return ret;
/* Fill sst platform data */
ctx->pdata = pdata;
strcpy(ctx->firmware_name, mach->fw_filename);