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disp: msm: sde: register io resource collection VM event hook

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Add support to read register ranges and IRQ lines that needs
isolation during VM switch. Register for vm resource collection
event providing the callback function.

Change-Id: Ie1edf0794a8de89cc44279892433b45a54eba609
Signed-off-by: Jeykumar Sankaran <jsanka@codeaurora.org>
This commit is contained in:
Jeykumar Sankaran
2020-05-22 12:54:10 -07:00
committed by Gerrit - the friendly Code Review server
parent bd60dce87c
commit c3389d315c
2 changed files with 29 additions and 0 deletions
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21
msm/sde/sde_kms.c
View File

@@ -52,6 +52,7 @@
#include <linux/qcom_scm.h>
#include "soc/qcom/secure_buffer.h"
#include <linux/qtee_shmbridge.h>
#include <linux/haven/hh_irq_lend.h>
#define CREATE_TRACE_POINTS
#include "sde_trace.h"
@@ -3572,6 +3573,26 @@ power_error:
return rc;
}
int sde_kms_get_io_resources(struct sde_kms *sde_kms, struct msm_io_res *io_res)
{
struct platform_device *pdev = to_platform_device(sde_kms->dev->dev);
int rc = 0;
rc = msm_dss_get_io_mem(pdev, &io_res->mem);
if (rc) {
SDE_ERROR("failed to get io mem for KMS, rc = %d\n", rc);
return rc;
}
rc = msm_dss_get_io_irq(pdev, &io_res->irq, HH_IRQ_LABEL_SDE);
if (rc) {
SDE_ERROR("failed to get io irq for KMS");
return rc;
}
return rc;
}
static int sde_kms_hw_init(struct msm_kms *kms)
{
struct sde_kms *sde_kms;

8
msm/sde/sde_kms.h
View File

@@ -690,4 +690,12 @@ int sde_kms_handle_recovery(struct drm_encoder *encoder);
*/
void sde_kms_irq_enable_notify(struct sde_kms *sde_kms, bool enable);
/**
* sde_kms_get_io_resources() - reads associated register range
* @kms: pointer to sde_kms structure
* @io_res: pointer to msm_io_res struct to populate the ranges
* Return: error code.
*/
int sde_kms_get_io_resources(struct sde_kms *kms, struct msm_io_res *io_res);
#endif /* __sde_kms_H__ */