diff options
| author | Lina Iyer <ilina@codeaurora.org> | 2018-06-20 16:27:03 +0300 |
|---|---|---|
| committer | Andy Gross <andy.gross@linaro.org> | 2018-07-21 21:32:59 +0300 |
| commit | 9a3afcfbc0cc9af5e18ff53bb0d41a30e0d3d896 (patch) | |
| tree | 6d5c03c8364a6cade478ab75335c71e72bd0bb17 /drivers/soc | |
| parent | fa460e453a83af0054dc3d3d210a6617db333a20 (diff) | |
| download | linux-9a3afcfbc0cc9af5e18ff53bb0d41a30e0d3d896.tar.xz | |
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>
Diffstat (limited to 'drivers/soc')
| -rw-r--r-- | drivers/soc/qcom/rpmh-rsc.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/drivers/soc/qcom/rpmh-rsc.c b/drivers/soc/qcom/rpmh-rsc.c index 604ebb6757cc..fed8459c0ef6 100644 --- a/drivers/soc/qcom/rpmh-rsc.c +++ b/drivers/soc/qcom/rpmh-rsc.c @@ -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) { |