From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sean Cross Subject: [PATCH v2 1/2] mfd: stmpe: support gpio over irq under device tree Date: Fri, 12 Sep 2014 11:18:33 +0800 Message-ID: <1410491914-23378-2-git-send-email-xobs@kosagi.com> References: <1410491914-23378-1-git-send-email-xobs@kosagi.com> Return-path: In-Reply-To: <1410491914-23378-1-git-send-email-xobs@kosagi.com> Sender: linux-kernel-owner@vger.kernel.org To: Samuel Ortiz , Lee Jones , linux-kernel@vger.kernel.org, Randy Dunlap , Ian Campbell , Kumar Gala , Rob Herring , devicetree@vger.kernel.org Cc: bunnie@kosagi.com, Sean Cross List-Id: devicetree@vger.kernel.org The stmpe_platform_data has a irq_over_gpio field, which allows the system to read STMPE events whenever an IRQ occurs on a GPIO pin. This patch adds the ability to configure this field and to use a GPIO as an IRQ source for boards configuring the STMPE in device tree. Signed-off-by: Sean Cross --- drivers/mfd/stmpe.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/mfd/stmpe.c b/drivers/mfd/stmpe.c index 3b6bfa7..4c42b05 100644 --- a/drivers/mfd/stmpe.c +++ b/drivers/mfd/stmpe.c @@ -1122,7 +1122,12 @@ static void stmpe_of_probe(struct stmpe_platform_data *pdata, if (pdata->id < 0) pdata->id = -1; - pdata->irq_trigger = IRQF_TRIGGER_NONE; + pdata->irq_gpio = of_get_named_gpio_flags(np, "irq-gpio", 0, + &pdata->irq_trigger); + if (gpio_is_valid(pdata->irq_gpio)) + pdata->irq_over_gpio = 1; + else + pdata->irq_trigger = IRQF_TRIGGER_NONE; of_property_read_u32(np, "st,autosleep-timeout", &pdata->autosleep_timeout); -- 2.1.0