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path: root/drivers/crypto/ccp/ccp-platform.c
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Diffstat (limited to 'drivers/crypto/ccp/ccp-platform.c')
-rw-r--r--drivers/crypto/ccp/ccp-platform.c48
1 files changed, 42 insertions, 6 deletions
diff --git a/drivers/crypto/ccp/ccp-platform.c b/drivers/crypto/ccp/ccp-platform.c
index 66dd7c9d0..351f28d8c 100644
--- a/drivers/crypto/ccp/ccp-platform.c
+++ b/drivers/crypto/ccp/ccp-platform.c
@@ -1,7 +1,7 @@
/*
* AMD Cryptographic Coprocessor (CCP) driver
*
- * Copyright (C) 2014 Advanced Micro Devices, Inc.
+ * Copyright (C) 2014,2016 Advanced Micro Devices, Inc.
*
* Author: Tom Lendacky <thomas.lendacky@amd.com>
*
@@ -32,6 +32,33 @@ struct ccp_platform {
int coherent;
};
+static const struct acpi_device_id ccp_acpi_match[];
+static const struct of_device_id ccp_of_match[];
+
+static struct ccp_vdata *ccp_get_of_version(struct platform_device *pdev)
+{
+#ifdef CONFIG_OF
+ const struct of_device_id *match;
+
+ match = of_match_node(ccp_of_match, pdev->dev.of_node);
+ if (match && match->data)
+ return (struct ccp_vdata *)match->data;
+#endif
+ return 0;
+}
+
+static struct ccp_vdata *ccp_get_acpi_version(struct platform_device *pdev)
+{
+#ifdef CONFIG_ACPI
+ const struct acpi_device_id *match;
+
+ match = acpi_match_device(ccp_acpi_match, &pdev->dev);
+ if (match && match->driver_data)
+ return (struct ccp_vdata *)match->driver_data;
+#endif
+ return 0;
+}
+
static int ccp_get_irq(struct ccp_device *ccp)
{
struct device *dev = ccp->dev;
@@ -43,7 +70,8 @@ static int ccp_get_irq(struct ccp_device *ccp)
return ret;
ccp->irq = ret;
- ret = request_irq(ccp->irq, ccp_irq_handler, 0, "ccp", dev);
+ ret = request_irq(ccp->irq, ccp->vdata->perform->irqhandler, 0,
+ ccp->name, dev);
if (ret) {
dev_notice(dev, "unable to allocate IRQ (%d)\n", ret);
return ret;
@@ -106,6 +134,13 @@ static int ccp_platform_probe(struct platform_device *pdev)
goto e_err;
ccp->dev_specific = ccp_platform;
+ ccp->vdata = pdev->dev.of_node ? ccp_get_of_version(pdev)
+ : ccp_get_acpi_version(pdev);
+ if (!ccp->vdata || !ccp->vdata->version) {
+ ret = -ENODEV;
+ dev_err(dev, "missing driver data\n");
+ goto e_err;
+ }
ccp->get_irq = ccp_get_irqs;
ccp->free_irq = ccp_free_irqs;
@@ -137,7 +172,7 @@ static int ccp_platform_probe(struct platform_device *pdev)
dev_set_drvdata(dev, ccp);
- ret = ccp_init(ccp);
+ ret = ccp->vdata->perform->init(ccp);
if (ret)
goto e_err;
@@ -155,7 +190,7 @@ static int ccp_platform_remove(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct ccp_device *ccp = dev_get_drvdata(dev);
- ccp_destroy(ccp);
+ ccp->vdata->perform->destroy(ccp);
dev_notice(dev, "disabled\n");
@@ -214,7 +249,7 @@ static int ccp_platform_resume(struct platform_device *pdev)
#ifdef CONFIG_ACPI
static const struct acpi_device_id ccp_acpi_match[] = {
- { "AMDI0C00", 0 },
+ { "AMDI0C00", (kernel_ulong_t)&ccpv3 },
{ },
};
MODULE_DEVICE_TABLE(acpi, ccp_acpi_match);
@@ -222,7 +257,8 @@ MODULE_DEVICE_TABLE(acpi, ccp_acpi_match);
#ifdef CONFIG_OF
static const struct of_device_id ccp_of_match[] = {
- { .compatible = "amd,ccp-seattle-v1a" },
+ { .compatible = "amd,ccp-seattle-v1a",
+ .data = (const void *)&ccpv3 },
{ },
};
MODULE_DEVICE_TABLE(of, ccp_of_match);