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iommu/arm-smmu-qcom: hook up qcom_smmu_impl for ACPI boot

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The hookup with qcom_smmu_impl is required to do ACPI boot on SC8180X
based devices like Lenovo Flex 5G laptop and Microsoft Surface Pro X.
Define acpi_platform_list for these platforms and match them using
acpi_match_platform_list() call, and create qcom_smmu_impl accordingly.

(np == NULL) is used to check ACPI boot, because fwnode of SMMU device
is a static allocation and thus helpers like has_acpi_companion() don't
work here.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210509022607.17534-1-shawn.guo@linaro.org
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Shawn Guo
2021-05-09 10:26:07 +08:00
committed by Will Deacon
parent c4681547bc
commit a51627c5df
1 changed files with 13 additions and 0 deletions
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13
drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
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@@ -3,6 +3,7 @@
* Copyright (c) 2019, The Linux Foundation. All rights reserved.
*/
#include <linux/acpi.h>
#include <linux/adreno-smmu-priv.h>
#include <linux/of_device.h>
#include <linux/qcom_scm.h>
@@ -339,10 +340,22 @@ static const struct of_device_id __maybe_unused qcom_smmu_impl_of_match[] = {
{ }
};
static struct acpi_platform_list qcom_acpi_platlist[] = {
{ "LENOVO", "CB-01 ", 0x8180, ACPI_SIG_IORT, equal, "QCOM SMMU" },
{ "QCOM ", "QCOMEDK2", 0x8180, ACPI_SIG_IORT, equal, "QCOM SMMU" },
{ }
};
struct arm_smmu_device *qcom_smmu_impl_init(struct arm_smmu_device *smmu)
{
const struct device_node *np = smmu->dev->of_node;
if (np == NULL) {
/* Match platform for ACPI boot */
if (acpi_match_platform_list(qcom_acpi_platlist) >= 0)
return qcom_smmu_create(smmu, &qcom_smmu_impl);
}
if (of_match_node(qcom_smmu_impl_of_match, np))
return qcom_smmu_create(smmu, &qcom_smmu_impl);