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Fri, 25 Oct 2024 21:46:14 +0200 (CEST) From: =?utf-8?b?TsOtY29sYXMgRi4gUi4gQS4gUHJhZG8=?= Date: Fri, 25 Oct 2024 15:45:39 -0400 Subject: [PATCH RFC v2 4/5] selftest: gpio: Add wait flag to gpio-mockup-cdev MIME-Version: 1.0 Message-Id: <20241025-kselftest-gpio-set-get-config-v2-4-040d748840bb@collabora.com> References: <20241025-kselftest-gpio-set-get-config-v2-0-040d748840bb@collabora.com> In-Reply-To: <20241025-kselftest-gpio-set-get-config-v2-0-040d748840bb@collabora.com> To: Sean Wang , Linus Walleij , Matthias Brugger , AngeloGioacchino Del Regno , Bamvor Jian Zhang , Shuah Khan Cc: kernel@collabora.com, linux-mediatek@lists.infradead.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kselftest@vger.kernel.org, kernelci@lists.linux.dev, =?utf-8?b?TsOtY29sYXMgRi4gUi4gQS4gUHJhZG8=?= X-Mailer: b4 0.14.2 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241025_204626_853278_A3534FFC X-CRM114-Status: GOOD ( 15.53 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add a -w flag to the gpio-mockup-cdev utility that causes the program to wait until a signal is received before exiting, even when its behavior is to retrieve the GPIO value of the line. This allows using this utility to keep a GPIO line configured even when in input mode, which will be relied on in other tests. Signed-off-by: Nícolas F. R. A. Prado --- tools/testing/selftests/gpio/gpio-mockup-cdev.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/gpio/gpio-mockup-cdev.c b/tools/testing/selftests/gpio/gpio-mockup-cdev.c index d1640f44f8ac2a6fda7a5f75605f83fcaa165dc0..f674dcafa60a02cb1739f3cfae8963dc09efba74 100644 --- a/tools/testing/selftests/gpio/gpio-mockup-cdev.c +++ b/tools/testing/selftests/gpio/gpio-mockup-cdev.c @@ -15,6 +15,7 @@ #include #include #include +#include #define CONSUMER "gpio-mockup-cdev" @@ -95,6 +96,7 @@ static void usage(char *prog) printf(" (default is to leave bias unchanged):\n"); printf(" -l: set line active low (default is active high)\n"); printf(" -s: set line value (default is to get line value)\n"); + printf(" -w: wait even in get mode\n"); printf(" -u: uAPI version to use (default is 2)\n"); exit(-1); } @@ -120,13 +122,14 @@ int main(int argc, char *argv[]) unsigned int offset, val = 0, abiv; uint32_t flags_v1; uint64_t flags_v2; + bool wait = false; abiv = 2; ret = 0; flags_v1 = GPIOHANDLE_REQUEST_INPUT; flags_v2 = GPIO_V2_LINE_FLAG_INPUT; - while ((opt = getopt(argc, argv, "lb:s:u:")) != -1) { + while ((opt = getopt(argc, argv, "lb:s:u:w")) != -1) { switch (opt) { case 'l': flags_v1 |= GPIOHANDLE_REQUEST_ACTIVE_LOW; @@ -150,10 +153,14 @@ int main(int argc, char *argv[]) flags_v1 |= GPIOHANDLE_REQUEST_OUTPUT; flags_v2 &= ~GPIO_V2_LINE_FLAG_INPUT; flags_v2 |= GPIO_V2_LINE_FLAG_OUTPUT; + wait = true; break; case 'u': abiv = atoi(optarg); break; + case 'w': + wait = true; + break; default: usage(argv[0]); } @@ -183,9 +190,10 @@ int main(int argc, char *argv[]) return lfd; } - if (flags_v2 & GPIO_V2_LINE_FLAG_OUTPUT) { + if (wait) wait_signal(); - } else { + + if (flags_v2 & GPIO_V2_LINE_FLAG_INPUT) { if (abiv == 1) ret = get_value_v1(lfd); else