From: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
To: Brad Larson <brad@pensando.io>, linux-arm-kernel@lists.infradead.org
Cc: arnd@arndb.de, linus.walleij@linaro.org,
bgolaszewski@baylibre.com, broonie@kernel.org,
fancer.lancer@gmail.com, adrian.hunter@intel.com,
ulf.hansson@linaro.org, olof@lixom.net,
linux-gpio@vger.kernel.org, linux-spi@vger.kernel.org,
linux-mmc@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/8] gpio: Add Elba SoC gpio driver for spi cs control
Date: Fri, 5 Mar 2021 12:25:39 +0100 [thread overview]
Message-ID: <605880ad-6c12-bf1d-45f8-ef70181e4eec@canonical.com> (raw)
In-Reply-To: <20210304034141.7062-2-brad@pensando.io>
On 04/03/2021 04:41, Brad Larson wrote:
> This GPIO driver is for the Pensando Elba SoC which
> provides control of four chip selects on two SPI busses.
>
> Signed-off-by: Brad Larson <brad@pensando.io>
> ---
> drivers/gpio/Kconfig | 6 ++
> drivers/gpio/Makefile | 1 +
> drivers/gpio/gpio-elba-spics.c | 120 +++++++++++++++++++++++++++++++++
> 3 files changed, 127 insertions(+)
> create mode 100644 drivers/gpio/gpio-elba-spics.c
(...)
> +static int elba_spics_probe(struct platform_device *pdev)
> +{
> + struct elba_spics_priv *p;
> + struct resource *res;
> + int ret;
> +
> + p = devm_kzalloc(&pdev->dev, sizeof(*p), GFP_KERNEL);
> + if (!p)
> + return -ENOMEM;
> +
> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + p->base = devm_ioremap_resource(&pdev->dev, res);
> + if (IS_ERR(p->base)) {
> + dev_err(&pdev->dev, "failed to remap I/O memory\n");
> + return PTR_ERR(p->base);
> + }
> + spin_lock_init(&p->lock);
> + platform_set_drvdata(pdev, p);
> +
> + p->chip.ngpio = 4; /* 2 cs pins for spi0, and 2 for spi1 */
> + p->chip.base = -1;
> + p->chip.direction_input = elba_spics_direction_input;
> + p->chip.direction_output = elba_spics_direction_output;
> + p->chip.get = elba_spics_get_value;
> + p->chip.set = elba_spics_set_value;
> + p->chip.label = dev_name(&pdev->dev);
> + p->chip.parent = &pdev->dev;
> + p->chip.owner = THIS_MODULE;
> +
> + ret = devm_gpiochip_add_data(&pdev->dev, &p->chip, p);
> + if (ret) {
> + dev_err(&pdev->dev, "unable to add gpio chip\n");
> + return ret;
> + }
> +
> + dev_info(&pdev->dev, "elba spics registered\n");
Don't print trivial probe results, unless you print here something
useful. If you need it for debugging, keep it dev_dbg.
Best regards,
Krzysztof
next prev parent reply other threads:[~2021-03-05 11:26 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-04 3:41 [PATCH 0/8] Support Pensando Elba SoC Brad Larson
2021-03-04 3:41 ` [PATCH 1/8] gpio: Add Elba SoC gpio driver for spi cs control Brad Larson
2021-03-04 8:29 ` Linus Walleij
2021-03-04 9:10 ` Serge Semin
2021-03-04 13:38 ` Linus Walleij
2021-08-23 1:05 ` Brad Larson
2021-08-29 21:09 ` Linus Walleij
2021-10-04 16:46 ` Brad Larson
2021-10-12 23:51 ` Linus Walleij
2021-10-14 20:06 ` Brad Larson
2021-03-30 2:44 ` Brad Larson
2021-08-23 1:05 ` Brad Larson
2021-03-04 20:43 ` Elliott, Robert (Servers)
2021-08-23 1:06 ` Brad Larson
2021-03-05 11:25 ` Krzysztof Kozlowski [this message]
2021-08-23 1:07 ` Brad Larson
2021-03-05 13:57 ` Geert Uytterhoeven
2021-08-23 1:08 ` Brad Larson
2021-03-07 19:21 ` Andy Shevchenko
2021-03-29 1:19 ` Brad Larson
2021-03-29 10:39 ` Andy Shevchenko
2021-08-23 1:13 ` Brad Larson
2021-08-23 7:50 ` Geert Uytterhoeven
2021-08-23 16:30 ` Brad Larson
2021-08-23 20:11 ` Geert Uytterhoeven
2021-10-04 17:14 ` Brad Larson
2021-10-04 17:16 ` Geert Uytterhoeven
2021-08-23 1:10 ` Brad Larson
2021-03-04 3:41 ` [PATCH 2/8] spi: cadence-quadspi: Add QSPI support for Pensando Elba SoC Brad Larson
2021-03-04 9:29 ` Arnd Bergmann
2021-03-04 3:41 ` [PATCH 3/8] spi: dw: Add support for Pensando Elba SoC SPI Brad Larson
2021-03-04 6:44 ` Serge Semin
2021-08-23 1:17 ` Brad Larson
2021-03-04 8:48 ` Linus Walleij
2021-03-10 3:52 ` Brad Larson
2021-03-04 3:41 ` [PATCH 4/8] spidev: Add Pensando CPLD compatible Brad Larson
2021-03-04 9:33 ` Arnd Bergmann
2021-03-04 3:41 ` [PATCH 5/8] mmc: sdhci-cadence: Add Pensando Elba SoC support Brad Larson
2021-03-04 9:41 ` Arnd Bergmann
2021-03-04 3:41 ` [PATCH 6/8] arm64: Add config for Pensando SoC platforms Brad Larson
2021-03-04 9:42 ` Arnd Bergmann
2021-03-04 3:41 ` [PATCH 7/8] arm64: dts: Add Pensando Elba SoC support Brad Larson
2021-03-04 8:03 ` Serge Semin
2021-03-29 1:07 ` Brad Larson
2021-08-23 0:54 ` Brad Larson
2021-03-04 8:51 ` Linus Walleij
2021-03-29 0:54 ` Brad Larson
2021-03-04 9:06 ` Arnd Bergmann
2021-03-04 20:47 ` Rob Herring
2021-03-05 11:22 ` Krzysztof Kozlowski
2021-03-04 3:41 ` [PATCH 8/8] MAINTAINERS: Add entry for PENSANDO Brad Larson
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