From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Warren Subject: [RFC PATCH 08/12] gpio/tegra: Add device tree support Date: Fri, 12 Aug 2011 16:54:53 -0600 Message-ID: <1313189697-21287-9-git-send-email-swarren@nvidia.com> References: <1313189697-21287-1-git-send-email-swarren@nvidia.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1313189697-21287-1-git-send-email-swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: devicetree-discuss-bounces+gldd-devicetree-discuss=m.gmane.org-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org Sender: devicetree-discuss-bounces+gldd-devicetree-discuss=m.gmane.org-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org To: Grant Likely , Colin Cross , Erik Gilling , Olof Johansson Cc: Russell King , devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org List-Id: devicetree@vger.kernel.org Signed-off-by: Stephen Warren --- drivers/gpio/gpio-tegra.c | 31 +++++++++++++++++++++++++++++++ 1 files changed, 31 insertions(+), 0 deletions(-) diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c index 4da4839..923b413 100644 --- a/drivers/gpio/gpio-tegra.c +++ b/drivers/gpio/gpio-tegra.c @@ -326,6 +326,29 @@ static struct irq_chip tegra_gpio_irq_chip = { #endif }; +#ifdef CONFIG_OF +static void __init tegra_gpio_probe_dt(struct platform_device *pdev) +{ + const __be32 *gpios; + u32 gpioslen; + int i; + + gpios = of_get_property(pdev->dev.of_node, "nvidia,gpios", &gpioslen); + if (gpios == NULL) + return; + + gpioslen /= sizeof(*gpios); + for (i = 0; i < gpioslen; i++, gpios++) { + u32 gpio = be32_to_cpup(gpios); + dev_err(&pdev->dev, "Enabling GPIO %d\n", gpio); + tegra_gpio_enable(gpio); + } +} +#else +static inline void __init tegra_gpio_probe_dt(struct platform_device *pdev) +{ +} +#endif /* This lock class tells lockdep that GPIO irqs are in a different * category than their parents, so it won't report false recursion. @@ -371,13 +394,21 @@ static int __init tegra_gpio_probe(struct platform_device *pdev) spin_lock_init(&bank->lvl_lock[j]); } + tegra_gpio_probe_dt(pdev); + return 0; } +static struct of_device_id tegra_gpio_of_match[] __devinitdata = { + { .compatible = "nvidia,tegra20-gpio", }, + { }, +}; + static struct platform_driver tegra_gpio_driver = { .driver = { .name = "tegra-gpio", .owner = THIS_MODULE, + .of_match_table = tegra_gpio_of_match, }, .probe = tegra_gpio_probe, }; -- 1.7.0.4