linux-kernel - [PATCH 2/2] pinctrl: qcom: print egpio mode in debugfs

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20220210131210.24605-2-jonathan@marek.ca>
Date:   Thu, 10 Feb 2022 08:12:09 -0500
From:   Jonathan Marek <jonathan@...ek.ca>
To:     linux-arm-msm@...r.kernel.org
Cc:     dmitry.baryshkov@...aro.org,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        linux-gpio@...r.kernel.org (open list:PIN CONTROL SUBSYSTEM),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 2/2] pinctrl: qcom: print egpio mode in debugfs

When egpio_enable bit is cleared, the gpio is driven by SSC/LPASS TLMM and
the APSS TLMM settings are ignored. Reflect that in the debugfs dump.

Signed-off-by: Jonathan Marek <jonathan@...ek.ca>
---
 drivers/pinctrl/qcom/pinctrl-msm.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/pinctrl/qcom/pinctrl-msm.c b/drivers/pinctrl/qcom/pinctrl-msm.c
index 780878dede9e0..27c19a206502d 100644
--- a/drivers/pinctrl/qcom/pinctrl-msm.c
+++ b/drivers/pinctrl/qcom/pinctrl-msm.c
@@ -615,6 +615,7 @@ static void msm_gpio_dbg_show_one(struct seq_file *s,
 	int drive;
 	int pull;
 	int val;
+	int egpio_enable;
 	u32 ctl_reg, io_reg;
 
 	static const char * const pulls_keeper[] = {
@@ -641,12 +642,20 @@ static void msm_gpio_dbg_show_one(struct seq_file *s,
 	func = (ctl_reg >> g->mux_bit) & 7;
 	drive = (ctl_reg >> g->drv_bit) & 7;
 	pull = (ctl_reg >> g->pull_bit) & 3;
+	egpio_enable = 0;
+	if (pctrl->soc->egpio_func && ctl_reg & BIT(g->egpio_present))
+		egpio_enable = !(ctl_reg & BIT(g->egpio_enable));
 
 	if (is_out)
 		val = !!(io_reg & BIT(g->out_bit));
 	else
 		val = !!(io_reg & BIT(g->in_bit));
 
+	if (egpio_enable) {
+		seq_printf(s, " %-8s: egpio\n", g->name);
+		return;
+	}
+
 	seq_printf(s, " %-8s: %-3s", g->name, is_out ? "out" : "in");
 	seq_printf(s, " %-4s func%d", val ? "high" : "low", func);
 	seq_printf(s, " %dmA", msm_regval_to_drive(drive));
-- 
2.26.1