From: Shaik Sajida Bhanu <quic_c_sbhanu@quicinc.com>
To: adrian.hunter@intel.com, ulf.hansson@linaro.org,
wsa+renesas@sang-engineering.com, shawn.lin@rock-chips.com,
yoshihiro.shimoda.uh@renesas.com, digetx@gmail.com,
quic_asutoshd@quicinc.com
Cc: linux-arm-msm@vger.kernel.org, linux-mmc@vger.kernel.org,
linux-kernel@vger.kernel.org, quic_rampraka@quicinc.com,
quic_pragalla@quicinc.com, quic_sartgarg@quicinc.com,
quic_nitirawa@quicinc.com, quic_sayalil@quicinc.com,
Shaik Sajida Bhanu <quic_c_sbhanu@quicinc.com>,
Liangliang Lu <quic_luliang@quicinc.com>,
"Bao D . Nguyen" <quic_nguyenb@quicinc.com>
Subject: [PATCH V8 4/5] mmc: debugfs: Add debug fs error state entry for mmc driver
Date: Fri, 27 May 2022 23:23:55 +0530 [thread overview]
Message-ID: <1653674036-21829-5-git-send-email-quic_c_sbhanu@quicinc.com> (raw)
In-Reply-To: <1653674036-21829-1-git-send-email-quic_c_sbhanu@quicinc.com>
Add debug fs entry error state to query eMMC and SD card errors statistics.
If any errors occurred in eMMC and SD card driver level then
err_state value will be set to 1.
Signed-off-by: Liangliang Lu <quic_luliang@quicinc.com>
Signed-off-by: Sayali Lokhande <quic_sayalil@quicinc.com>
Signed-off-by: Bao D. Nguyen <quic_nguyenb@quicinc.com>
Signed-off-by: Shaik Sajida Bhanu <quic_c_sbhanu@quicinc.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
---
drivers/mmc/core/debugfs.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/drivers/mmc/core/debugfs.c b/drivers/mmc/core/debugfs.c
index 6aa5a60..75e98ec 100644
--- a/drivers/mmc/core/debugfs.c
+++ b/drivers/mmc/core/debugfs.c
@@ -223,6 +223,27 @@ static int mmc_clock_opt_set(void *data, u64 val)
DEFINE_DEBUGFS_ATTRIBUTE(mmc_clock_fops, mmc_clock_opt_get, mmc_clock_opt_set,
"%llu\n");
+static int mmc_err_state_get(void *data, u64 *val)
+{
+ struct mmc_host *host = data;
+ int i;
+
+ if (!host)
+ return -EINVAL;
+
+ *val = 0;
+ for (i = 0; i < MMC_ERR_MAX; i++) {
+ if (host->err_stats[i]) {
+ *val = 1;
+ break;
+ }
+ }
+
+ return 0;
+}
+
+DEFINE_DEBUGFS_ATTRIBUTE(mmc_err_state, mmc_err_state_get, NULL, "%llu\n");
+
static int mmc_err_stats_show(struct seq_file *file, void *data)
{
struct mmc_host *host = (struct mmc_host *)file->private;
@@ -289,6 +310,8 @@ void mmc_add_host_debugfs(struct mmc_host *host)
debugfs_create_file_unsafe("clock", S_IRUSR | S_IWUSR, root, host,
&mmc_clock_fops);
+ debugfs_create_file_unsafe("err_state", 0600, root, host,
+ &mmc_err_state);
debugfs_create_file("err_stats", 0600, root, host,
&mmc_err_stats_fops);
--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
of Code Aurora Forum, hosted by The Linux Foundation
next prev parent reply other threads:[~2022-05-27 17:54 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-27 17:53 [PATCH V8 0/5] mmc: add error statistics for eMMC and SD card Shaik Sajida Bhanu
2022-05-27 17:53 ` [PATCH V8 1/5] mmc: core: Capture eMMC and SD card errors Shaik Sajida Bhanu
2022-05-27 17:53 ` [PATCH V8 2/5] mmc: sdhci: " Shaik Sajida Bhanu
2022-05-27 17:53 ` [PATCH V8 3/5] mmc: debugfs: Add debug fs entry for mmc driver Shaik Sajida Bhanu
2022-05-27 17:53 ` Shaik Sajida Bhanu [this message]
2022-05-27 17:53 ` [PATCH V8 5/5] mmc: cqhci: Capture eMMC and SD card errors Shaik Sajida Bhanu
2022-05-30 8:12 ` [PATCH V8 0/5] mmc: add error statistics for eMMC and SD card Adrian Hunter
2022-06-01 12:46 ` Ulf Hansson
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