linux-kernel - [PATCH v6 3/3] pinctrl: bcm2835: Add support for output-low output-high properties

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: <1525030092-3643-3-git-send-email-matheus@castello.eng.br>
Date:   Sun, 29 Apr 2018 15:28:12 -0400
From:   Matheus Castello <matheus@...tello.eng.br>
To:     linus.walleij@...aro.org, stefan.wahren@...e.com, eric@...olt.net
Cc:     swarren@...dotorg.org, robh+dt@...nel.org, mark.rutland@....com,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        Matheus Castello <matheus@...tello.eng.br>
Subject: [PATCH v6 3/3] pinctrl: bcm2835: Add support for output-low output-high properties

Properties to set initial value of pin output buffer.
This can be useful for configure hardware in overlay files, and in early
boot for checking it states in QA sanity tests.

Signed-off-by: Matheus Castello <matheus@...tello.eng.br>
---
 drivers/pinctrl/bcm/pinctrl-bcm2835.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/pinctrl/bcm/pinctrl-bcm2835.c b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
index 0231107..3bc0d04 100644
--- a/drivers/pinctrl/bcm/pinctrl-bcm2835.c
+++ b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
@@ -965,6 +965,11 @@ static int bcm2835_pinconf_set(struct pinctrl_dev *pctldev,
 			bcm2835_pull_config_set(pc, pin, BCM2835_PUD_UP);
 			break;
 
+		/* Set output-high or output-low */
+		case PIN_CONFIG_OUTPUT:
+			bcm2835_gpio_set_bit(pc, arg ? GPSET0 : GPCLR0, pin);
+			break;
+
 		default:
 			return -EINVAL;
 
-- 
2.7.4