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disp: msm: sde: add explicit sub-driver mappings for TVM

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TUI clients are the display sub-drivers that participate
during the TUI transition. They register with the display
TUI notification framework with a list of callbacks functions
that will be invoked during pre/post transitions and for quering
I/O memory that need to be access controlled. This change
adds RSC to the TUI client list.

In Trusted VM, all the sub-drivers are not enabled to avoid
any re-configuration of respective module registers. But the
TUI framework need to know the sub-driver I/O memory ranges
in order to accept the I/O memory list lent by the HLOS VM.
So, SDE provides them ranges by reading from a custom
devicetree property.

Change-Id: I2c4b254d539d04771339ae4a7bf4d296b7a7f91a
Signed-off-by: Jeykumar Sankaran <jsanka@codeaurora.org>
This commit is contained in:
Jeykumar Sankaran
2021-05-29 00:25:07 -07:00
parent 5ec8dc1afc
commit 7a112bb744
4 changed files with 87 additions and 0 deletions
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30
msm/sde_rsc.c
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@@ -1597,6 +1597,28 @@ static void sde_rsc_deinit(struct platform_device *pdev,
kfree(rsc);
}
/**
* sde_rsc_get_io_resources - collect register ranges for the device to
* perform access control on TUI transition
* @io_res: io resource list
* @data: payload data provided during msm_register_vm_event
* Returns: zero on success
*/
static int sde_rsc_get_io_resources(struct msm_io_res *io_res, void *data)
{
int rc = 0;
struct sde_rsc_priv *rsc = (struct sde_rsc_priv *)data;
struct platform_device *pdev = to_platform_device(rsc->dev);
rc = msm_dss_get_io_mem(pdev, &io_res->mem);
if (rc) {
pr_err("failed to get rsc io mem, rc = %d\n", rc);
return rc;
}
return 0;
}
/**
* sde_rsc_bind - bind rsc device with controlling device
* @dev: Pointer to base of platform device
@@ -1611,6 +1633,9 @@ static int sde_rsc_bind(struct device *dev,
struct sde_rsc_priv *rsc;
struct drm_device *drm;
struct platform_device *pdev = to_platform_device(dev);
struct msm_vm_ops vm_event_ops = {
.vm_get_io_resources = sde_rsc_get_io_resources,
};
if (!dev || !pdev || !master) {
pr_err("invalid param(s), dev %pK, pdev %pK, master %pK\n",
@@ -1630,6 +1655,9 @@ static int sde_rsc_bind(struct device *dev,
rsc->drv_io.len, msm_get_phys_addr(pdev, "drv"), SDE_DBG_RSC);
sde_dbg_reg_register_base(SDE_RSC_WRAPPER_DBG_NAME, rsc->wrapper_io.base,
rsc->wrapper_io.len, msm_get_phys_addr(pdev, "wrapper"), SDE_DBG_RSC);
msm_register_vm_event(master, dev, &vm_event_ops, (void *)rsc);
return 0;
}
@@ -1655,6 +1683,8 @@ static void sde_rsc_unbind(struct device *dev,
pr_err("invalid display rsc\n");
return;
}
msm_unregister_vm_event(master, dev);
}
static const struct component_ops sde_rsc_comp_ops = {