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MLK-15005-03 irqchip: irqsteer: add ipg clock support 

Some subsystems have lpcg sw_bit to control the ipg_clk to LIS,
so add the ipg clock for the module.

Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
pull/10/head
Fugang Duan 2017-06-05 11:31:10 +08:00 committed by Jason Liu
parent aa0ca92c3b
commit b0dc844137
2 changed files with 17 additions and 0 deletions
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1
Documentation/devicetree/bindings/interrupt-controller/nxp,imx-irqsteer.txt
View File

@ -3,6 +3,7 @@
Required properties:
- compatible: "nxp,imx-irqsteer".
- reg: should contain IC registers location and length.
- clocks : ipg clock for irqsteer.
- interrupts: an interrupt to the parent interrupt controller.
- interrupt-controller: identifies the node as an interrupt controller.
- interrupt-parent: gic interrupt controller, link to parent

16
drivers/irqchip/irq-imx-irqsteer.c
View File

@ -8,6 +8,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/clk.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/irqchip/chained_irq.h>
@ -27,6 +28,7 @@ struct irqsteer_irqchip_data {
spinlock_t lock;
struct platform_device *pdev;
void __iomem *regs;
struct clk *ipg_clk;
int irq;
int channum;
struct irq_domain *domain;
@ -170,10 +172,23 @@ static int imx_irqsteer_probe(struct platform_device *pdev)
return -ENODEV;
}
irqsteer_data->ipg_clk = devm_clk_get(&pdev->dev, "ipg");
if (IS_ERR(irqsteer_data->ipg_clk)) {
ret = PTR_ERR(irqsteer_data->ipg_clk);
dev_err(&pdev->dev, "failed to get ipg clk: %d\n", ret);
return ret;
}
irqsteer_data->channum = channum;
irqsteer_data->pdev = pdev;
spin_lock_init(&irqsteer_data->lock);
ret = clk_prepare_enable(irqsteer_data->ipg_clk);
if (ret) {
dev_err(&pdev->dev, "failed to enable ipg clk: %d\n", ret);
return ret;
}
imx_irqsteer_init(irqsteer_data);
irqsteer_data->domain = irq_domain_add_linear(np,
@ -204,6 +219,7 @@ static int imx_irqsteer_remove(struct platform_device *pdev)
irq_domain_remove(irqsteer_data->domain);
platform_set_drvdata(pdev, NULL);
clk_disable_unprepare(irqsteer_data->ipg_clk);
return 0;
}