[PATCH v2 2/9] remoteproc: qcom_wcnss: migrate to qcom_mdt_pas_load() and qcom_pas_prepare_and_auth_reset()

[Mukesh Ojha <mukesh.ojha@oss.qualcomm.com>]

wcnss_load() calls qcom_mdt_load(), which bundles metadata init,
memory setup, and segment loading into a single API that does not
expose a PAS context, and wcnss_start() calls
qcom_pas_auth_and_reset() for TrustZone authentication, which is
the intended behaviour. However, a new qcom_mdt_pas_load() has
recently been introduced that works with a PAS context and can
handle everything qcom_mdt_load() provides, along with additional
functionality such as shmbridge creation and retrieving memory
from the shmbridge buffer when the same remote processor needs to
run while Linux runs at EL2.

Allocate a qcom_pas_context in wcnss_probe() via
devm_qcom_pas_context_alloc() and store it in struct qcom_wcnss.
Replace qcom_mdt_load() with qcom_mdt_pas_load() in wcnss_load()
and replace qcom_pas_auth_and_reset() with
qcom_pas_prepare_and_auth_reset() in wcnss_start(). The existing
devm_ioremap_wc() mapping is retained for wcnss_da_to_va()
address translation.

Signed-off-by: Mukesh Ojha <mukesh.ojha@oss.qualcomm.com>
---
 drivers/remoteproc/qcom_wcnss.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/remoteproc/qcom_wcnss.c b/drivers/remoteproc/qcom_wcnss.c
index 02f38fe29f20..f377ce6d324f 100644
--- a/drivers/remoteproc/qcom_wcnss.c
+++ b/drivers/remoteproc/qcom_wcnss.c
@@ -96,6 +96,7 @@ struct qcom_wcnss {
 	phys_addr_t mem_reloc;
 	void __iomem *mem_region;
 	size_t mem_size;
+	struct qcom_pas_context *pas_ctx;
 
 	struct qcom_rproc_subdev smd_subdev;
 	struct qcom_sysmon *sysmon;
@@ -157,9 +158,7 @@ static int wcnss_load(struct rproc *rproc, const struct firmware *fw)
 	struct qcom_wcnss *wcnss = rproc->priv;
 	int ret;
 
-	ret = qcom_mdt_load(wcnss->dev, fw, rproc->firmware, WCNSS_PAS_ID,
-			    (__force void *)wcnss->mem_region, wcnss->mem_phys,
-			    wcnss->mem_size, &wcnss->mem_reloc);
+	ret = qcom_mdt_pas_load(wcnss->pas_ctx, fw, rproc->firmware, wcnss->mem_reloc);
 	if (ret)
 		return ret;
 
@@ -257,7 +256,7 @@ static int wcnss_start(struct rproc *rproc)
 	wcnss_indicate_nv_download(wcnss);
 	wcnss_configure_iris(wcnss);
 
-	ret = qcom_pas_auth_and_reset(WCNSS_PAS_ID);
+	ret = qcom_pas_prepare_and_auth_reset(wcnss->pas_ctx);
 	if (ret) {
 		dev_err(wcnss->dev,
 			"failed to authenticate image and release reset\n");
@@ -599,6 +598,11 @@ static int wcnss_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
+	wcnss->pas_ctx = devm_qcom_pas_context_alloc(wcnss->dev, WCNSS_PAS_ID,
+						     wcnss->mem_phys, wcnss->mem_size);
+	if (IS_ERR(wcnss->pas_ctx))
+		return PTR_ERR(wcnss->pas_ctx);
+
 	wcnss->pmu_cfg = mmio + data->pmu_offset;
 	wcnss->spare_out = mmio + data->spare_offset;
 
-- 
2.55.0