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authorLina Iyer <ilina@codeaurora.org>2018-06-20 15:27:03 +0200
committerAndy Gross <andy.gross@linaro.org>2018-07-21 20:32:59 +0200
commit9a3afcfbc0cc9af5e18ff53bb0d41a30e0d3d896 (patch)
tree6d5c03c8364a6cade478ab75335c71e72bd0bb17 /drivers/soc
parentdrivers: qcom: rpmh-rsc: write sleep/wake requests to TCS (diff)
downloadlinux-9a3afcfbc0cc9af5e18ff53bb0d41a30e0d3d896.tar.xz
linux-9a3afcfbc0cc9af5e18ff53bb0d41a30e0d3d896.zip
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.c44
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)
{