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drivers: qcom: rpmh-rsc: allow invalidation of sleep/wake TCS 

Allow sleep and wake commands to be cleared from the respective TCSes,
so that they can be re-populated.

Signed-off-by: Lina Iyer <ilina@codeaurora.org>
Signed-off-by: Raju P.L.S.S.S.N <rplsssn@codeaurora.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
hifive-unleashed-5.1
Lina Iyer 2018-06-20 18:57:03 +05:30 committed by Andy Gross
parent fa460e453a
commit 9a3afcfbc0
1 changed files with 44 additions and 0 deletions
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44
drivers/soc/qcom/rpmh-rsc.c
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@ -101,6 +101,50 @@ static struct tcs_group *get_tcs_of_type(struct rsc_drv *drv, int type)
return &drv->tcs[type];
}
static int tcs_invalidate(struct rsc_drv *drv, int type)
{
int m;
struct tcs_group *tcs;
tcs = get_tcs_of_type(drv, type);
if (IS_ERR(tcs))
return PTR_ERR(tcs);
spin_lock(&tcs->lock);
if (bitmap_empty(tcs->slots, MAX_TCS_SLOTS)) {
spin_unlock(&tcs->lock);
return 0;
}
for (m = tcs->offset; m < tcs->offset + tcs->num_tcs; m++) {
if (!tcs_is_free(drv, m)) {
spin_unlock(&tcs->lock);
return -EAGAIN;
}
write_tcs_reg_sync(drv, RSC_DRV_CMD_ENABLE, m, 0);
}
bitmap_zero(tcs->slots, MAX_TCS_SLOTS);
spin_unlock(&tcs->lock);
return 0;
}
/**
* rpmh_rsc_invalidate - Invalidate sleep and wake TCSes
*
* @drv: the RSC controller
*/
int rpmh_rsc_invalidate(struct rsc_drv *drv)
{
int ret;
ret = tcs_invalidate(drv, SLEEP_TCS);
if (!ret)
ret = tcs_invalidate(drv, WAKE_TCS);
return ret;
}
static struct tcs_group *get_tcs_for_msg(struct rsc_drv *drv,
const struct tcs_request *msg)
{