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MLK-24382-2 irqchip: imx-intmux: add runtime pm support 

Add runtime pm support for intmux interrupt controller.

Reviewed-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
5.4-rM2-2.2.x-imx-squashed
Joakim Zhang 2020-07-07 23:55:13 +08:00
parent 89f28f28d7
commit 49af6b36fc
1 changed files with 29 additions and 11 deletions
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40
drivers/irqchip/irq-imx-intmux.c
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@ -15,6 +15,7 @@
#include <linux/irqdomain.h>
#include <linux/of_platform.h>
#include <linux/spinlock.h>
#include <linux/pm_runtime.h>
#define CHANCSR(n) (0x0 + 0x40 * n)
#define CHANVEC(n) (0x4 + 0x40 * n)
@ -22,6 +23,7 @@
#define CHANIPR(n) (0x20 + (0x40 * n))
struct intmux_irqchip_data {
struct irq_chip chip;
int chanidx;
int irq;
struct irq_domain *domain;
@ -89,8 +91,10 @@ static struct irq_chip imx_intmux_irq_chip = {
static int imx_intmux_irq_map(struct irq_domain *h, unsigned int irq,
irq_hw_number_t hwirq)
{
struct intmux_irqchip_data *irqchip_data = h->host_data;
irq_set_chip_data(irq, h->host_data);
irq_set_chip_and_handler(irq, &imx_intmux_irq_chip, handle_edge_irq);
irq_set_chip_and_handler(irq, &irqchip_data->chip, handle_edge_irq);
return 0;
}
@ -173,13 +177,9 @@ static int imx_intmux_probe(struct platform_device *pdev)
return -ENOMEM;
}
ret = clk_prepare_enable(intmux_data->ipg_clk);
if (ret) {
dev_err(&pdev->dev, "failed to enable ipg clk: %d\n", ret);
return ret;
}
for (i = 0; i < channum; i++) {
intmux_data->irqchip_data[i].chip = imx_intmux_irq_chip;
intmux_data->irqchip_data[i].chip.parent_device = &pdev->dev;
intmux_data->irqchip_data[i].chanidx = i;
intmux_data->irqchip_data[i].irq = platform_get_irq(pdev, i);
if (intmux_data->irqchip_data[i].irq <= 0) {
@ -204,6 +204,21 @@ static int imx_intmux_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, intmux_data);
pm_runtime_get_noresume(&pdev->dev);
pm_runtime_set_active(&pdev->dev);
pm_runtime_enable(&pdev->dev);
ret = clk_prepare_enable(intmux_data->ipg_clk);
if (ret) {
dev_err(&pdev->dev, "failed to enable ipg clk: %d\n", ret);
return ret;
}
/*
* Let pm_runtime_put() disable clock.
* If CONFIG_PM is not enabled, the clock will stay powered.
*/
pm_runtime_put(&pdev->dev);
return 0;
}
@ -219,7 +234,7 @@ static int imx_intmux_remove(struct platform_device *pdev)
}
platform_set_drvdata(pdev, NULL);
clk_disable_unprepare(intmux_data->ipg_clk);
pm_runtime_disable(&pdev->dev);
return 0;
}
@ -243,7 +258,7 @@ static void imx_intmux_restore_regs(struct intmux_data *intmux_data)
+ CHANIER(i));
}
static int imx_intmux_suspend(struct device *dev)
static int imx_intmux_runtime_suspend(struct device *dev)
{
struct intmux_data *intmux_data = dev_get_drvdata(dev);
@ -253,7 +268,7 @@ static int imx_intmux_suspend(struct device *dev)
return 0;
}
static int imx_intmux_resume(struct device *dev)
static int imx_intmux_runtime_resume(struct device *dev)
{
struct intmux_data *intmux_data = dev_get_drvdata(dev);
int ret;
@ -270,7 +285,10 @@ static int imx_intmux_resume(struct device *dev)
#endif
static const struct dev_pm_ops imx_intmux_pm_ops = {
SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(imx_intmux_suspend, imx_intmux_resume)
SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
pm_runtime_force_resume)
SET_RUNTIME_PM_OPS(imx_intmux_runtime_suspend,
imx_intmux_runtime_resume, NULL)
};
static const struct of_device_id imx_intmux_id[] = {