diff options
Diffstat (limited to 'drivers/remoteproc/rpres.c')
| -rw-r--r-- | drivers/remoteproc/rpres.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/drivers/remoteproc/rpres.c b/drivers/remoteproc/rpres.c index 522b1ce..c52e6a1 100644 --- a/drivers/remoteproc/rpres.c +++ b/drivers/remoteproc/rpres.c @@ -75,6 +75,54 @@ void rpres_put(struct rpres *obj) } EXPORT_SYMBOL(rpres_put); +int rpres_set_constraints(struct rpres *obj, enum rpres_constraint type, long val) +{ + int ret; + struct rpres_platform_data *pdata = obj->pdev->dev.platform_data; + struct platform_device *pdev = obj->pdev; + static const char *cname[] = {"scale", "latency", "bandwidth"}; + int (*func)(struct platform_device *, long); + + switch (type) { + case RPRES_CONSTRAINT_SCALE: + func = pdata->ops->scale_dev; + break; + case RPRES_CONSTRAINT_LATENCY: + func = pdata->ops->set_lat; + break; + case RPRES_CONSTRAINT_BANDWIDTH: + func = pdata->ops->set_bw; + break; + default: + dev_err(&pdev->dev, "%s: invalid constraint %d\n", + __func__, type); + return -EINVAL; + } + + if (!func) { + dev_err(&pdev->dev, "%s: No %s constraint\n", + __func__, cname[type]); + return -EINVAL; + } + + mutex_lock(&obj->lock); + if (obj->state == RPRES_INACTIVE) { + mutex_unlock(&obj->lock); + pr_err("%s: resource inactive\n", __func__); + return -EPERM; + } + + dev_dbg(&pdev->dev, "set %s constraint %ld\n", cname[type], val); + ret = func(pdev, val); + if (ret) + dev_err(&pdev->dev, "%s: error setting constraint %s\n", + __func__, cname[type]); + mutex_unlock(&obj->lock); + + return ret; +} +EXPORT_SYMBOL(rpres_set_constraints); + static int rpres_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; |