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platform:x86: Add Intel telemetry platform device

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Telemetry Device is created by the pmc_ipc driver. Resources
are populated according SSRAM region as indicated by the BIOS tables.

Signed-off-by: Souvik Kumar Chakravarty <souvik.k.chakravarty@intel.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
This commit is contained in:
Souvik Kumar Chakravarty 2016-01-12 16:02:54 +05:30 committed by Darren Hart
parent 9d16b482b0
commit 48c1917088
1 changed files with 96 additions and 0 deletions
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96
drivers/platform/x86/intel_pmc_ipc.c
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@ -70,6 +70,7 @@
#define PLAT_RESOURCE_GCR_SIZE 0x1000
#define PLAT_RESOURCE_BIOS_DATA_INDEX 1
#define PLAT_RESOURCE_BIOS_IFACE_INDEX 2
#define PLAT_RESOURCE_TELEM_SSRAM_INDEX 3
#define PLAT_RESOURCE_ISP_DATA_INDEX 4
#define PLAT_RESOURCE_ISP_IFACE_INDEX 5
#define PLAT_RESOURCE_GTD_DATA_INDEX 6
@ -88,6 +89,10 @@
#define TCO_BASE_OFFSET 0x60
#define TCO_REGS_SIZE 16
#define PUNIT_DEVICE_NAME "intel_punit_ipc"
#define TELEMETRY_DEVICE_NAME "intel_telemetry"
#define TELEM_SSRAM_SIZE 240
#define TELEM_PMC_SSRAM_OFFSET 0x1B00
#define TELEM_PUNIT_SSRAM_OFFSET 0x1A00
static const int iTCO_version = 3;
@ -110,6 +115,14 @@ static struct intel_pmc_ipc_dev {
/* punit */
struct platform_device *punit_dev;
/* Telemetry */
resource_size_t telem_pmc_ssram_base;
resource_size_t telem_punit_ssram_base;
int telem_pmc_ssram_size;
int telem_punit_ssram_size;
u8 telem_res_inval;
struct platform_device *telemetry_dev;
} ipcdev;
static char *ipc_err_sources[] = {
@ -491,6 +504,18 @@ static struct itco_wdt_platform_data tco_info = {
.version = 3,
};
#define TELEMETRY_RESOURCE_PUNIT_SSRAM 0
#define TELEMETRY_RESOURCE_PMC_SSRAM 1
static struct resource telemetry_res[] = {
/*Telemetry*/
{
.flags = IORESOURCE_MEM,
},
{
.flags = IORESOURCE_MEM,
},
};
static int ipc_create_punit_device(void)
{
struct platform_device *pdev;
@ -574,6 +599,51 @@ static int ipc_create_tco_device(void)
return ret;
}
static int ipc_create_telemetry_device(void)
{
struct platform_device *pdev;
struct resource *res;
int ret;
pdev = platform_device_alloc(TELEMETRY_DEVICE_NAME, -1);
if (!pdev) {
dev_err(ipcdev.dev,
"Failed to allocate telemetry platform device\n");
return -ENOMEM;
}
pdev->dev.parent = ipcdev.dev;
res = telemetry_res + TELEMETRY_RESOURCE_PUNIT_SSRAM;
res->start = ipcdev.telem_punit_ssram_base;
res->end = res->start + ipcdev.telem_punit_ssram_size - 1;
res = telemetry_res + TELEMETRY_RESOURCE_PMC_SSRAM;
res->start = ipcdev.telem_pmc_ssram_base;
res->end = res->start + ipcdev.telem_pmc_ssram_size - 1;
ret = platform_device_add_resources(pdev, telemetry_res,
ARRAY_SIZE(telemetry_res));
if (ret) {
dev_err(ipcdev.dev,
"Failed to add telemetry platform resources\n");
goto err;
}
ret = platform_device_add(pdev);
if (ret) {
dev_err(ipcdev.dev,
"Failed to add telemetry platform device\n");
goto err;
}
ipcdev.telemetry_dev = pdev;
return 0;
err:
platform_device_put(pdev);
return ret;
}
static int ipc_create_pmc_devices(void)
{
int ret;
@ -588,6 +658,14 @@ static int ipc_create_pmc_devices(void)
dev_err(ipcdev.dev, "Failed to add punit platform device\n");
platform_device_unregister(ipcdev.tco_dev);
}
if (!ipcdev.telem_res_inval) {
ret = ipc_create_telemetry_device();
if (ret)
dev_warn(ipcdev.dev,
"Failed to add telemetry platform device\n");
}
return ret;
}
@ -692,6 +770,22 @@ static int ipc_plat_get_res(struct platform_device *pdev)
ipcdev.gcr_size = PLAT_RESOURCE_GCR_SIZE;
dev_info(&pdev->dev, "ipc res: %pR\n", res);
ipcdev.telem_res_inval = 0;
res = platform_get_resource(pdev, IORESOURCE_MEM,
PLAT_RESOURCE_TELEM_SSRAM_INDEX);
if (!res) {
dev_err(&pdev->dev, "Failed to get telemetry ssram resource\n");
ipcdev.telem_res_inval = 1;
} else {
ipcdev.telem_punit_ssram_base = res->start +
TELEM_PUNIT_SSRAM_OFFSET;
ipcdev.telem_punit_ssram_size = TELEM_SSRAM_SIZE;
ipcdev.telem_pmc_ssram_base = res->start +
TELEM_PMC_SSRAM_OFFSET;
ipcdev.telem_pmc_ssram_size = TELEM_SSRAM_SIZE;
dev_info(&pdev->dev, "telemetry ssram res: %pR\n", res);
}
return 0;
}
@ -749,6 +843,7 @@ static int ipc_plat_probe(struct platform_device *pdev)
err_irq:
platform_device_unregister(ipcdev.tco_dev);
platform_device_unregister(ipcdev.punit_dev);
platform_device_unregister(ipcdev.telemetry_dev);
err_device:
iounmap(ipcdev.ipc_base);
res = platform_get_resource(pdev, IORESOURCE_MEM,
@ -766,6 +861,7 @@ static int ipc_plat_remove(struct platform_device *pdev)
free_irq(ipcdev.irq, &ipcdev);
platform_device_unregister(ipcdev.tco_dev);
platform_device_unregister(ipcdev.punit_dev);
platform_device_unregister(ipcdev.telemetry_dev);
iounmap(ipcdev.ipc_base);
res = platform_get_resource(pdev, IORESOURCE_MEM,
PLAT_RESOURCE_IPC_INDEX);