@@ -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);
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> --- sound/soc/intel/atom/sst/sst_acpi.c | 82 +++++++++++++++++++++++++++++++++++-- 1 file changed, 78 insertions(+), 4 deletions(-)