power.c

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#include <xwcd/ds/standard.h>
#include <string.h>
#include <xwcd/ds/soc/power.h>
 
__xwds_api
xwer_t xwds_pwr_req(struct xwds_soc * soc, xwid_t id)
{
        const struct xwds_soc_driver * drv;
        xwer_t rc;
 
        XWDS_VALIDATE(soc, "nullptr", -EFAULT);
        XWDS_VALIDATE((id < soc->pwr.num), "out-of-range", -ERANGE);
 
        rc = xwds_soc_grab(soc);
        if (rc < 0) {
                goto err_soc_grab;
        }
 
        drv = xwds_cast(const struct xwds_soc_driver *, soc->dev.drv);
        if ((drv) && (drv->pwr_req)) {
                rc = drv->pwr_req(soc, id);
        } else {
                rc = -ENOSYS;
        }
        if (rc < 0) {
                goto err_drv_pwr_req;
        }
        return XWOK;
 
err_drv_pwr_req:
        xwds_soc_put(soc);
err_soc_grab:
        return rc;
}
 
__xwds_api
xwer_t xwds_pwr_rls(struct xwds_soc * soc, xwid_t id)
{
        const struct xwds_soc_driver * drv;
        xwer_t rc;
 
        XWDS_VALIDATE(soc, "nullptr", -EFAULT);
        XWDS_VALIDATE((id < soc->pwr.num), "out-of-range", -ERANGE);
 
        drv = xwds_cast(const struct xwds_soc_driver *, soc->dev.drv);
        if ((drv) && (drv->pwr_rls)) {
                rc = drv->pwr_rls(soc, id);
        } else {
                rc = -ENOSYS;
        }
        if (rc < 0) {
                goto err_drv_pwr_rls;
        }
 
        xwds_soc_put(soc);
        return XWOK;
 
err_drv_pwr_rls:
        return rc;
}
 
__xwds_api
xwer_t xwds_pwr_getvltg(struct xwds_soc * soc, xwid_t id,
                        xwu32_t * buf, xwsz_t * num)
{
        const struct xwds_soc_driver * drv;
        xwer_t rc;
 
        XWDS_VALIDATE(soc, "nullptr", -EFAULT);
        XWDS_VALIDATE((id < soc->pwr.num), "out-of-range", -ERANGE);
        XWDS_VALIDATE(buf, "nullptr", -EFAULT);
        XWDS_VALIDATE(num, "nullptr", -EFAULT);
 
        rc = xwds_soc_grab(soc);
        if (rc < 0) {
                goto err_soc_grab;
        }
 
        drv = xwds_cast(const struct xwds_soc_driver *, soc->dev.drv);
        if ((drv) && (drv->pwr_getvltg)) {
                rc = drv->pwr_getvltg(soc, id, buf, num);
        } else {
                rc = -ENOSYS;
        }
        if (rc < 0) {
                goto err_drv_getvltg;
        }
 
        xwds_soc_put(soc);
        return XWOK;
 
err_drv_getvltg:
        xwds_soc_put(soc);
err_soc_grab:
        return rc;
}