Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753590AbbDAMAJ (ORCPT ); Wed, 1 Apr 2015 08:00:09 -0400 Received: from michel.telenet-ops.be ([195.130.137.88]:56229 "EHLO michel.telenet-ops.be" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753315AbbDAMAG (ORCPT ); Wed, 1 Apr 2015 08:00:06 -0400 From: Geert Uytterhoeven To: Thomas Gleixner , Jason Cooper Cc: linux-sh@vger.kernel.org, Simon Horman , Magnus Damm , linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Geert Uytterhoeven Subject: [PATCH] irqchip: renesas-irqc: Add wake-up support Date: Wed, 1 Apr 2015 14:00:06 +0200 Message-Id: <1427889606-18671-1-git-send-email-geert+renesas@glider.be> X-Mailer: git-send-email 1.9.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2641 Lines: 89 The IRQC module clock is managed through Runtime PM and PM Domains. If wake-up is enabled, this clock must not be disabled during system suspend. Hence implement irq_chip.irq_set_wake(), which increments/decrements the clock's enable_count when needed. This fixes wake-up by gpio-keys on r8a73a4/ape6evm. Signed-off-by: Geert Uytterhoeven --- Against irqchip/renesas drivers/irqchip/irq-renesas-irqc.c | 26 +++++++++++++++++++++++++- 1 file changed, 25 insertions(+), 1 deletion(-) diff --git a/drivers/irqchip/irq-renesas-irqc.c b/drivers/irqchip/irq-renesas-irqc.c index 718f01cd1aea19f6..cdf80b7794cd738e 100644 --- a/drivers/irqchip/irq-renesas-irqc.c +++ b/drivers/irqchip/irq-renesas-irqc.c @@ -17,6 +17,7 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ +#include #include #include #include @@ -66,6 +67,7 @@ struct irqc_priv { struct platform_device *pdev; struct irq_chip irq_chip; struct irq_domain *irq_domain; + struct clk *clk; }; static void irqc_dbg(struct irqc_irq *i, char *str) @@ -119,6 +121,21 @@ static int irqc_irq_set_type(struct irq_data *d, unsigned int type) return 0; } +static int irqc_irq_set_wake(struct irq_data *d, unsigned int on) +{ + struct irqc_priv *p = irq_data_get_irq_chip_data(d); + + if (!p->clk) + return 0; + + if (on) + clk_enable(p->clk); + else + clk_disable(p->clk); + + return 0; +} + static irqreturn_t irqc_irq_handler(int irq, void *dev_id) { struct irqc_irq *i = dev_id; @@ -181,6 +198,12 @@ static int irqc_probe(struct platform_device *pdev) p->pdev = pdev; platform_set_drvdata(pdev, p); + p->clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(p->clk)) { + dev_warn(&pdev->dev, "unable to get clock\n"); + p->clk = NULL; + } + pm_runtime_enable(&pdev->dev); pm_runtime_get_sync(&pdev->dev); @@ -224,7 +247,8 @@ static int irqc_probe(struct platform_device *pdev) irq_chip->irq_mask = irqc_irq_disable; irq_chip->irq_unmask = irqc_irq_enable; irq_chip->irq_set_type = irqc_irq_set_type; - irq_chip->flags = IRQCHIP_SKIP_SET_WAKE | IRQCHIP_MASK_ON_SUSPEND; + irq_chip->irq_set_wake = irqc_irq_set_wake; + irq_chip->flags = IRQCHIP_MASK_ON_SUSPEND; p->irq_domain = irq_domain_add_simple(pdev->dev.of_node, p->number_of_irqs, -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/