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From:   Maulik Shah <mkshah@codeaurora.org>
To:     swboyd@chromium.org, mka@chromium.org, evgreen@chromium.org,
        bjorn.andersson@linaro.org
Cc:     linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
        agross@kernel.org, dianders@chromium.org, rnayak@codeaurora.org,
        ilina@codeaurora.org, lsrao@codeaurora.org,
        Maulik Shah <mkshah@codeaurora.org>,
        Taniya Das <tdas@codeaurora.org>,
        Odelu Kukatla <okukatla@codeaurora.org>,
        Kiran Gunda <kgunda@codeaurora.org>,
        Sibi Sankar <sibis@codeaurora.org>
Subject: [PATCH v13 5/5] drivers: qcom: Update rpmh clients to use start and end transactions
Date:   Mon,  9 Mar 2020 15:00:36 +0530
Message-Id: <1583746236-13325-6-git-send-email-mkshah@codeaurora.org>
In-Reply-To: <1583746236-13325-1-git-send-email-mkshah@codeaurora.org>
References: <1583746236-13325-1-git-send-email-mkshah@codeaurora.org>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Update all rpmh clients to start using rpmh_start_transaction() and
rpmh_end_transaction().

Cc: Taniya Das <tdas@codeaurora.org>
Cc: Odelu Kukatla <okukatla@codeaurora.org>
Cc: Kiran Gunda <kgunda@codeaurora.org>
Cc: Sibi Sankar <sibis@codeaurora.org>
Signed-off-by: Maulik Shah <mkshah@codeaurora.org>
---
 drivers/clk/qcom/clk-rpmh.c             | 21 ++++++++++++++-------
 drivers/interconnect/qcom/bcm-voter.c   | 13 +++++++++----
 drivers/regulator/qcom-rpmh-regulator.c |  4 ++++
 drivers/soc/qcom/rpmhpd.c               | 11 +++++++++--
 4 files changed, 36 insertions(+), 13 deletions(-)

diff --git a/drivers/clk/qcom/clk-rpmh.c b/drivers/clk/qcom/clk-rpmh.c
index 12bd871..16f68d4 100644
--- a/drivers/clk/qcom/clk-rpmh.c
+++ b/drivers/clk/qcom/clk-rpmh.c
@@ -154,22 +154,27 @@ static int clk_rpmh_send_aggregate_command(struct clk_rpmh *c)
 	cmd_state = c->aggr_state;
 	on_val = c->res_on_val;
 
+	rpmh_start_transaction(c->dev);
+
 	for (; state <= RPMH_ACTIVE_ONLY_STATE; state++) {
 		if (has_state_changed(c, state)) {
 			if (cmd_state & BIT(state))
 				cmd.data = on_val;
 
 			ret = rpmh_write_async(c->dev, state, &cmd, 1);
-			if (ret) {
-				dev_err(c->dev, "set %s state of %s failed: (%d)\n",
-					!state ? "sleep" :
-					state == RPMH_WAKE_ONLY_STATE	?
-					"wake" : "active", c->res_name, ret);
-				return ret;
-			}
+			if (ret)
+				break;
 		}
 	}
 
+	ret |= rpmh_end_transaction(c->dev);
+	if (ret) {
+		dev_err(c->dev, "set %s state of %s failed: (%d)\n",
+			!state ? "sleep" : state == RPMH_WAKE_ONLY_STATE ?
+			"wake" : "active", c->res_name, ret);
+		return ret;
+	}
+
 	c->last_sent_aggr_state = c->aggr_state;
 	c->peer->last_sent_aggr_state =  c->last_sent_aggr_state;
 
@@ -267,7 +272,9 @@ static int clk_rpmh_bcm_send_cmd(struct clk_rpmh *c, bool enable)
 	cmd.addr = c->res_addr;
 	cmd.data = BCM_TCS_CMD(1, enable, 0, cmd_state);
 
+	rpmh_start_transaction(c->dev);
 	ret = rpmh_write_async(c->dev, RPMH_ACTIVE_ONLY_STATE, &cmd, 1);
+	ret |= rpmh_end_transaction(c->dev);
 	if (ret) {
 		dev_err(c->dev, "set active state of %s failed: (%d)\n",
 			c->res_name, ret);
diff --git a/drivers/interconnect/qcom/bcm-voter.c b/drivers/interconnect/qcom/bcm-voter.c
index 2adfde8..fbe18b2 100644
--- a/drivers/interconnect/qcom/bcm-voter.c
+++ b/drivers/interconnect/qcom/bcm-voter.c
@@ -263,7 +263,9 @@ int qcom_icc_bcm_voter_commit(struct bcm_voter *voter)
 	tcs_list_gen(&voter->commit_list, QCOM_ICC_BUCKET_AMC, cmds, commit_idx);
 
 	if (!commit_idx[0])
-		goto out;
+		goto end;
+
+	rpmh_start_transaction(voter-dev);
 
 	ret = rpmh_invalidate(voter->dev);
 	if (ret) {
@@ -312,12 +314,15 @@ int qcom_icc_bcm_voter_commit(struct bcm_voter *voter)
 	tcs_list_gen(&voter->commit_list, QCOM_ICC_BUCKET_SLEEP, cmds, commit_idx);
 
 	ret = rpmh_write_batch(voter->dev, RPMH_SLEEP_STATE, cmds, commit_idx);
-	if (ret) {
+	if (ret)
 		pr_err("Error sending SLEEP RPMH requests (%d)\n", ret);
-		goto out;
-	}
 
 out:
+	ret = rpmh_end_transaction(voter-dev);
+	if (ret)
+		pr_err("Error ending rpmh transaction (%d)\n", ret);
+
+end:
 	list_for_each_entry_safe(bcm, bcm_tmp, &voter->commit_list, list)
 		list_del_init(&bcm->list);
 
diff --git a/drivers/regulator/qcom-rpmh-regulator.c b/drivers/regulator/qcom-rpmh-regulator.c
index c86ad40..f4b9176 100644
--- a/drivers/regulator/qcom-rpmh-regulator.c
+++ b/drivers/regulator/qcom-rpmh-regulator.c
@@ -163,12 +163,16 @@ static int rpmh_regulator_send_request(struct rpmh_vreg *vreg,
 {
 	int ret;
 
+	rpmh_start_transaction(vreg->dev);
+
 	if (wait_for_ack || vreg->always_wait_for_ack)
 		ret = rpmh_write(vreg->dev, RPMH_ACTIVE_ONLY_STATE, cmd, 1);
 	else
 		ret = rpmh_write_async(vreg->dev, RPMH_ACTIVE_ONLY_STATE, cmd,
 					1);
 
+	ret |= rpmh_end_transaction(vreg->dev);
+
 	return ret;
 }
 
diff --git a/drivers/soc/qcom/rpmhpd.c b/drivers/soc/qcom/rpmhpd.c
index 4d264d0..0e9d204 100644
--- a/drivers/soc/qcom/rpmhpd.c
+++ b/drivers/soc/qcom/rpmhpd.c
@@ -193,19 +193,26 @@ static const struct of_device_id rpmhpd_match_table[] = {
 static int rpmhpd_send_corner(struct rpmhpd *pd, int state,
 			      unsigned int corner, bool sync)
 {
+	int ret;
 	struct tcs_cmd cmd = {
 		.addr = pd->addr,
 		.data = corner,
 	};
 
+	rpmh_start_transaction(pd->dev);
+
 	/*
 	 * Wait for an ack only when we are increasing the
 	 * perf state of the power domain
 	 */
 	if (sync)
-		return rpmh_write(pd->dev, state, &cmd, 1);
+		ret = rpmh_write(pd->dev, state, &cmd, 1);
 	else
-		return rpmh_write_async(pd->dev, state, &cmd, 1);
+		ret = rpmh_write_async(pd->dev, state, &cmd, 1);
+
+	ret |= rpmh_end_transaction(pd->dev);
+
+	return ret;
 }
 
 static void to_active_sleep(struct rpmhpd *pd, unsigned int corner,
-- 
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