From mboxrd@z Thu Jan 1 00:00:00 1970 From: Aisheng Dong Subject: [PATCH 4/4] irq: imx: irqsteer: add multi output interrupts support Date: Fri, 18 Jan 2019 07:53:58 +0000 Message-ID: <1547797668-30342-5-git-send-email-aisheng.dong@nxp.com> References: <1547797668-30342-1-git-send-email-aisheng.dong@nxp.com> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <1547797668-30342-1-git-send-email-aisheng.dong@nxp.com> Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org To: "linux-kernel@vger.kernel.org" Cc: "linux-arm-kernel@lists.infradead.org" , "shawnguo@kernel.org" , dl-linux-imx , "l.stach@pengutronix.de" , "robh+dt@kernel.org" , "devicetree@vger.kernel.org" , "tglx@linutronix.de" , Aisheng Dong , Marc Zyngier List-Id: devicetree@vger.kernel.org One irqsteer channel can support up to 8 output interrupts. Cc: Marc Zyngier Cc: Lucas Stach Cc: Shawn Guo Signed-off-by: Dong Aisheng --- drivers/irqchip/irq-imx-irqsteer.c | 39 +++++++++++++++++++++++++++-------= ---- 1 file changed, 28 insertions(+), 11 deletions(-) diff --git a/drivers/irqchip/irq-imx-irqsteer.c b/drivers/irqchip/irq-imx-i= rqsteer.c index 1bebf0a..54802fa 100644 --- a/drivers/irqchip/irq-imx-irqsteer.c +++ b/drivers/irqchip/irq-imx-irqsteer.c @@ -10,6 +10,7 @@ #include #include #include +#include #include #include =20 @@ -21,10 +22,13 @@ #define CHAN_MINTDIS(t) (CTRL_STRIDE_OFF(t, 3) + 0x4) #define CHAN_MASTRSTAT(t) (CTRL_STRIDE_OFF(t, 3) + 0x8) =20 +#define CHAN_MAX_OUTPUT_INT 0x8 + struct irqsteer_data { void __iomem *regs; struct clk *ipg_clk; - int irq; + int irq[CHAN_MAX_OUTPUT_INT]; + int irq_count; raw_spinlock_t lock; int reg_num; int channel; @@ -117,7 +121,7 @@ static int imx_irqsteer_probe(struct platform_device *p= dev) struct device_node *np =3D pdev->dev.of_node; struct irqsteer_data *data; struct resource *res; - int ret; + int i, ret; =20 data =3D devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); if (!data) @@ -130,12 +134,6 @@ static int imx_irqsteer_probe(struct platform_device *= pdev) return PTR_ERR(data->regs); } =20 - data->irq =3D platform_get_irq(pdev, 0); - if (data->irq <=3D 0) { - dev_err(&pdev->dev, "failed to get irq\n"); - return -ENODEV; - } - data->ipg_clk =3D devm_clk_get(&pdev->dev, "ipg"); if (IS_ERR(data->ipg_clk)) { ret =3D PTR_ERR(data->ipg_clk); @@ -177,8 +175,23 @@ static int imx_irqsteer_probe(struct platform_device *= pdev) return -ENOMEM; } =20 - irq_set_chained_handler_and_data(data->irq, imx_irqsteer_irq_handler, - data); + data->irq_count =3D of_irq_count(np); + if (!data->irq_count || data->irq_count > CHAN_MAX_OUTPUT_INT) { + clk_disable_unprepare(data->ipg_clk); + return -EINVAL; + } + + for (i =3D 0; i < data->irq_count; i++) { + data->irq[i] =3D irq_of_parse_and_map(np, i); + if (!data->irq[i]) { + clk_disable_unprepare(data->ipg_clk); + return -EINVAL; + } + + irq_set_chained_handler_and_data(data->irq[i], + imx_irqsteer_irq_handler, + data); + } =20 platform_set_drvdata(pdev, data); =20 @@ -188,8 +201,12 @@ static int imx_irqsteer_probe(struct platform_device *= pdev) static int imx_irqsteer_remove(struct platform_device *pdev) { struct irqsteer_data *irqsteer_data =3D platform_get_drvdata(pdev); + int i; + + for (i =3D 0; i < irqsteer_data->irq_count; i++) + irq_set_chained_handler_and_data(irqsteer_data->irq[i], + NULL, NULL); =20 - irq_set_chained_handler_and_data(irqsteer_data->irq, NULL, NULL); irq_domain_remove(irqsteer_data->domain); =20 clk_disable_unprepare(irqsteer_data->ipg_clk); --=20 2.7.4