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| author | Bjorn Andersson <bjorn.andersson@linaro.org> | 2017-08-30 02:13:35 +0300 |
|---|---|---|
| committer | Bjorn Andersson <bjorn.andersson@linaro.org> | 2017-09-02 01:31:23 +0300 |
| commit | eea07023e6d9523ddf446bbac771e78805614b43 (patch) | |
| tree | 58565b3a7e84790c20032ebe0e9213605b33364c /drivers/remoteproc/qcom_common.c | |
| parent | f8ff9777ec48c4c3078e96b33d88109783078a81 (diff) | |
| download | linux-eea07023e6d9523ddf446bbac771e78805614b43.tar.xz | |
remoteproc: qcom: adsp: Allow defining GLINK edge
Introduce the GLINK subdev, which allows the definition of a GLINK edge
as child of a remoteproc.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Diffstat (limited to 'drivers/remoteproc/qcom_common.c')
| -rw-r--r-- | drivers/remoteproc/qcom_common.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/drivers/remoteproc/qcom_common.c b/drivers/remoteproc/qcom_common.c index bb90481215c6..46274c60c3ea 100644 --- a/drivers/remoteproc/qcom_common.c +++ b/drivers/remoteproc/qcom_common.c @@ -19,11 +19,13 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/remoteproc.h> +#include <linux/rpmsg/qcom_glink.h> #include <linux/rpmsg/qcom_smd.h> #include "remoteproc_internal.h" #include "qcom_common.h" +#define to_glink_subdev(d) container_of(d, struct qcom_rproc_glink, subdev) #define to_smd_subdev(d) container_of(d, struct qcom_rproc_subdev, subdev) /** @@ -45,6 +47,53 @@ struct resource_table *qcom_mdt_find_rsc_table(struct rproc *rproc, } EXPORT_SYMBOL_GPL(qcom_mdt_find_rsc_table); +static int glink_subdev_probe(struct rproc_subdev *subdev) +{ + struct qcom_rproc_glink *glink = to_glink_subdev(subdev); + + glink->edge = qcom_glink_smem_register(glink->dev, glink->node); + + return IS_ERR(glink->edge) ? PTR_ERR(glink->edge) : 0; +} + +static void glink_subdev_remove(struct rproc_subdev *subdev) +{ + struct qcom_rproc_glink *glink = to_glink_subdev(subdev); + + qcom_glink_smem_unregister(glink->edge); + glink->edge = NULL; +} + +/** + * qcom_add_glink_subdev() - try to add a GLINK subdevice to rproc + * @rproc: rproc handle to parent the subdevice + * @glink: reference to a GLINK subdev context + */ +void qcom_add_glink_subdev(struct rproc *rproc, struct qcom_rproc_glink *glink) +{ + struct device *dev = &rproc->dev; + + glink->node = of_get_child_by_name(dev->parent->of_node, "glink-edge"); + if (!glink->node) + return; + + glink->dev = dev; + rproc_add_subdev(rproc, &glink->subdev, glink_subdev_probe, glink_subdev_remove); +} +EXPORT_SYMBOL_GPL(qcom_add_glink_subdev); + +/** + * qcom_remove_glink_subdev() - remove a GLINK subdevice from rproc + * @rproc: rproc handle + * @glink: reference to a GLINK subdev context + */ +void qcom_remove_glink_subdev(struct rproc *rproc, struct qcom_rproc_glink *glink) +{ + rproc_remove_subdev(rproc, &glink->subdev); + of_node_put(glink->node); +} +EXPORT_SYMBOL_GPL(qcom_remove_glink_subdev); + static int smd_subdev_probe(struct rproc_subdev *subdev) { struct qcom_rproc_subdev *smd = to_smd_subdev(subdev); |