From: Sibi Sankar <sibis@codeaurora.org>
To: bjorn.andersson@linaro.org, evgreen@chromium.org, p.zabel@pengutronix.de
Cc: ohad@wizery.com, linux-arm-msm@vger.kernel.org,
linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org,
agross@kernel.org, Sibi Sankar <sibis@codeaurora.org>
Subject: [PATCH 1/4] remoteproc: qcom: q6v5-mss: Use regmap_read_poll_timeout
Date: Fri, 17 Jan 2020 19:21:27 +0530 [thread overview]
Message-ID: <20200117135130.3605-2-sibis@codeaurora.org> (raw)
In-Reply-To: <20200117135130.3605-1-sibis@codeaurora.org>
Replace the loop for HALT_ACK detection with regmap_read_poll_timeout.
Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
---
drivers/remoteproc/qcom_q6v5_mss.c | 16 ++++++----------
1 file changed, 6 insertions(+), 10 deletions(-)
diff --git a/drivers/remoteproc/qcom_q6v5_mss.c b/drivers/remoteproc/qcom_q6v5_mss.c
index 51f451311f5fc..f20b39c6ff0ed 100644
--- a/drivers/remoteproc/qcom_q6v5_mss.c
+++ b/drivers/remoteproc/qcom_q6v5_mss.c
@@ -73,6 +73,7 @@
#define NAV_AXI_IDLE_BIT BIT(2)
#define HALT_ACK_TIMEOUT_MS 100
+#define NAV_HALT_ACK_TIMEOUT_US 200
/* QDSP6SS_RESET */
#define Q6SS_STOP_CORE BIT(0)
@@ -746,7 +747,6 @@ static void q6v5proc_halt_nav_axi_port(struct q6v5 *qproc,
struct regmap *halt_map,
u32 offset)
{
- unsigned long timeout;
unsigned int val;
int ret;
@@ -760,15 +760,11 @@ static void q6v5proc_halt_nav_axi_port(struct q6v5 *qproc,
NAV_AXI_HALTREQ_BIT);
/* Wait for halt ack*/
- timeout = jiffies + msecs_to_jiffies(HALT_ACK_TIMEOUT_MS);
- for (;;) {
- ret = regmap_read(halt_map, offset, &val);
- if (ret || (val & NAV_AXI_HALTACK_BIT) ||
- time_after(jiffies, timeout))
- break;
-
- udelay(5);
- }
+ ret = regmap_read_poll_timeout(halt_map, offset, val,
+ (val & NAV_AXI_HALTACK_BIT),
+ 5, NAV_HALT_ACK_TIMEOUT_US);
+ if (ret)
+ dev_err(qproc->dev, "nav halt ack timeout\n");
ret = regmap_read(halt_map, offset, &val);
if (ret || !(val & NAV_AXI_IDLE_BIT))
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
next prev parent reply other threads:[~2020-01-17 13:51 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-17 13:51 [PATCH 0/4] Improve general readability of MSS on SC7180 Sibi Sankar
2020-01-17 13:51 ` Sibi Sankar [this message]
2020-01-17 14:19 ` [PATCH 1/4] remoteproc: qcom: q6v5-mss: Use regmap_read_poll_timeout Philipp Zabel
2020-01-20 19:24 ` Bjorn Andersson
2020-01-22 6:18 ` Sibi Sankar
2020-01-17 13:51 ` [PATCH 2/4] remoteproc: qcom: q6v5-mss: Improve readability across clk handling Sibi Sankar
2020-01-21 19:22 ` Evan Green
2020-01-22 6:38 ` Sibi Sankar
2020-01-17 13:51 ` [PATCH 3/4] remoteproc: qcom: q6v5-mss: Rename boot status timeout Sibi Sankar
2020-01-21 19:22 ` Evan Green
2020-01-17 13:51 ` [PATCH 4/4] remoteproc: qcom: q6v5-mss: Improve readability of reset_assert Sibi Sankar
2020-01-20 19:36 ` Bjorn Andersson
2020-01-20 19:37 ` [PATCH 0/4] Improve general readability of MSS on SC7180 Bjorn Andersson
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