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authorBjorn Andersson <bjorn.andersson@linaro.org>2017-01-27 07:04:54 -0800
committerBjorn Andersson <bjorn.andersson@linaro.org>2017-02-06 08:57:25 -0800
commitb90fcfcb1378ddab1ee58ec7caaedbba2a8eb7c6 (patch)
tree436db602ee6a0af7e02baaad94aa04a44a033a75 /drivers/remoteproc
parent2aad40d911eeb7dcac91c669f2762a28134f0eb1 (diff)
remoteproc: qcom: wcnss: Make SMD handling common
Move the SMD edge handling to the Qualcomm common file to make it reusable for other Qualcomm remoteproc drivers. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Diffstat (limited to 'drivers/remoteproc')
-rw-r--r--drivers/remoteproc/qcom_common.c50
-rw-r--r--drivers/remoteproc/qcom_common.h15
-rw-r--r--drivers/remoteproc/qcom_wcnss.c28
3 files changed, 67 insertions, 26 deletions
diff --git a/drivers/remoteproc/qcom_common.c b/drivers/remoteproc/qcom_common.c
index bd400336e209..bb90481215c6 100644
--- a/drivers/remoteproc/qcom_common.c
+++ b/drivers/remoteproc/qcom_common.c
@@ -19,10 +19,13 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/remoteproc.h>
+#include <linux/rpmsg/qcom_smd.h>
#include "remoteproc_internal.h"
#include "qcom_common.h"
+#define to_smd_subdev(d) container_of(d, struct qcom_rproc_subdev, subdev)
+
/**
* qcom_mdt_find_rsc_table() - provide dummy resource table for remoteproc
* @rproc: remoteproc handle
@@ -42,5 +45,52 @@ struct resource_table *qcom_mdt_find_rsc_table(struct rproc *rproc,
}
EXPORT_SYMBOL_GPL(qcom_mdt_find_rsc_table);
+static int smd_subdev_probe(struct rproc_subdev *subdev)
+{
+ struct qcom_rproc_subdev *smd = to_smd_subdev(subdev);
+
+ smd->edge = qcom_smd_register_edge(smd->dev, smd->node);
+
+ return IS_ERR(smd->edge) ? PTR_ERR(smd->edge) : 0;
+}
+
+static void smd_subdev_remove(struct rproc_subdev *subdev)
+{
+ struct qcom_rproc_subdev *smd = to_smd_subdev(subdev);
+
+ qcom_smd_unregister_edge(smd->edge);
+ smd->edge = NULL;
+}
+
+/**
+ * qcom_add_smd_subdev() - try to add a SMD subdevice to rproc
+ * @rproc: rproc handle to parent the subdevice
+ * @smd: reference to a Qualcomm subdev context
+ */
+void qcom_add_smd_subdev(struct rproc *rproc, struct qcom_rproc_subdev *smd)
+{
+ struct device *dev = &rproc->dev;
+
+ smd->node = of_get_child_by_name(dev->parent->of_node, "smd-edge");
+ if (!smd->node)
+ return;
+
+ smd->dev = dev;
+ rproc_add_subdev(rproc, &smd->subdev, smd_subdev_probe, smd_subdev_remove);
+}
+EXPORT_SYMBOL_GPL(qcom_add_smd_subdev);
+
+/**
+ * qcom_remove_smd_subdev() - remove the smd subdevice from rproc
+ * @rproc: rproc handle
+ * @smd: the SMD subdevice to remove
+ */
+void qcom_remove_smd_subdev(struct rproc *rproc, struct qcom_rproc_subdev *smd)
+{
+ rproc_remove_subdev(rproc, &smd->subdev);
+ of_node_put(smd->node);
+}
+EXPORT_SYMBOL_GPL(qcom_remove_smd_subdev);
+
MODULE_DESCRIPTION("Qualcomm Remoteproc helper driver");
MODULE_LICENSE("GPL v2");
diff --git a/drivers/remoteproc/qcom_common.h b/drivers/remoteproc/qcom_common.h
index caecf27c4ffa..db5c826d5cd4 100644
--- a/drivers/remoteproc/qcom_common.h
+++ b/drivers/remoteproc/qcom_common.h
@@ -1,11 +1,22 @@
#ifndef __RPROC_QCOM_COMMON_H__
#define __RPROC_QCOM_COMMON_H__
-struct resource_table;
-struct rproc;
+#include <linux/remoteproc.h>
+#include "remoteproc_internal.h"
+
+struct qcom_rproc_subdev {
+ struct rproc_subdev subdev;
+
+ struct device *dev;
+ struct device_node *node;
+ struct qcom_smd_edge *edge;
+};
struct resource_table *qcom_mdt_find_rsc_table(struct rproc *rproc,
const struct firmware *fw,
int *tablesz);
+void qcom_add_smd_subdev(struct rproc *rproc, struct qcom_rproc_subdev *smd);
+void qcom_remove_smd_subdev(struct rproc *rproc, struct qcom_rproc_subdev *smd);
+
#endif
diff --git a/drivers/remoteproc/qcom_wcnss.c b/drivers/remoteproc/qcom_wcnss.c
index 781211c144c6..c7686393d505 100644
--- a/drivers/remoteproc/qcom_wcnss.c
+++ b/drivers/remoteproc/qcom_wcnss.c
@@ -97,9 +97,7 @@ struct qcom_wcnss {
void *mem_region;
size_t mem_size;
- struct device_node *smd_node;
- struct qcom_smd_edge *smd_edge;
- struct rproc_subdev smd_subdev;
+ struct qcom_rproc_subdev smd_subdev;
};
static const struct wcnss_data riva_data = {
@@ -376,23 +374,6 @@ static irqreturn_t wcnss_stop_ack_interrupt(int irq, void *dev)
return IRQ_HANDLED;
}
-static int wcnss_smd_probe(struct rproc_subdev *subdev)
-{
- struct qcom_wcnss *wcnss = container_of(subdev, struct qcom_wcnss, smd_subdev);
-
- wcnss->smd_edge = qcom_smd_register_edge(wcnss->dev, wcnss->smd_node);
-
- return IS_ERR(wcnss->smd_edge) ? PTR_ERR(wcnss->smd_edge) : 0;
-}
-
-static void wcnss_smd_remove(struct rproc_subdev *subdev)
-{
- struct qcom_wcnss *wcnss = container_of(subdev, struct qcom_wcnss, smd_subdev);
-
- qcom_smd_unregister_edge(wcnss->smd_edge);
- wcnss->smd_edge = NULL;
-}
-
static int wcnss_init_regulators(struct qcom_wcnss *wcnss,
const struct wcnss_vreg_info *info,
int num_vregs)
@@ -575,9 +556,7 @@ static int wcnss_probe(struct platform_device *pdev)
}
}
- wcnss->smd_node = of_get_child_by_name(pdev->dev.of_node, "smd-edge");
- if (wcnss->smd_node)
- rproc_add_subdev(rproc, &wcnss->smd_subdev, wcnss_smd_probe, wcnss_smd_remove);
+ qcom_add_smd_subdev(rproc, &wcnss->smd_subdev);
ret = rproc_add(rproc);
if (ret)
@@ -597,9 +576,10 @@ static int wcnss_remove(struct platform_device *pdev)
of_platform_depopulate(&pdev->dev);
- of_node_put(wcnss->smd_node);
qcom_smem_state_put(wcnss->state);
rproc_del(wcnss->rproc);
+
+ qcom_remove_smd_subdev(wcnss->rproc, &wcnss->smd_subdev);
rproc_free(wcnss->rproc);
return 0;

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