tpm_tis: Allow tpm_tis to be bound using DT
This provides an open firwmare driver binding for tpm_tis. OF
is useful on arches where ACPI/PNP is not used.
The tcg,tpm-tis-mmio register map interface is specified by the TCG.
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index eaf5730..0127af1 100644
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -28,6 +28,8 @@
#include <linux/wait.h>
#include <linux/acpi.h>
#include <linux/freezer.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
#include "tpm.h"
#include "tpm_tis_core.h"
@@ -354,12 +356,21 @@ static int tpm_tis_plat_remove(struct platform_device *pdev)
return 0;
}
+#ifdef CONFIG_OF
+static const struct of_device_id tis_of_platform_match[] = {
+ {.compatible = "tcg,tpm-tis-mmio"},
+ {},
+};
+MODULE_DEVICE_TABLE(of, tis_of_platform_match);
+#endif
+
static struct platform_driver tis_drv = {
.probe = tpm_tis_plat_probe,
.remove = tpm_tis_plat_remove,
.driver = {
.name = "tpm_tis",
.pm = &tpm_tis_pm,
+ .of_match_table = of_match_ptr(tis_of_platform_match),
},
};
