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Message-Id: <20230603103923.3041723-2-suijingfeng@loongson.cn>
Date: Sat, 3 Jun 2023 18:39:17 +0800
From: Sui Jingfeng <suijingfeng@...ngson.cn>
To: Lucas Stach <l.stach@...gutronix.de>,
Russell King <linux+etnaviv@...linux.org.uk>,
Christian Gmeiner <christian.gmeiner@...il.com>,
David Airlie <airlied@...il.com>,
Daniel Vetter <daniel@...ll.ch>,
Bjorn Helgaas <bhelgaas@...gle.com>
Cc: linux-kernel@...r.kernel.org, etnaviv@...ts.freedesktop.org,
dri-devel@...ts.freedesktop.org, loongson-kernel@...ts.loongnix.cn
Subject: [PATCH v7 1/7] drm/etnaviv: add a dedicated function to register an irq handler
Because getting IRQ from a device is platform-dependent, PCI devices have
different methods for getting an IRQ. This patch is a preparation patch to
extend the driver for the PCI device support.
Signed-off-by: Sui Jingfeng <suijingfeng@...ngson.cn>
---
drivers/gpu/drm/etnaviv/etnaviv_gpu.c | 34 ++++++++++++++++++++-------
1 file changed, 25 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
index de8c9894967c..636d3f39ddcb 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
@@ -1817,6 +1817,29 @@ static const struct of_device_id etnaviv_gpu_match[] = {
};
MODULE_DEVICE_TABLE(of, etnaviv_gpu_match);
+static int etnaviv_gpu_register_irq(struct etnaviv_gpu *gpu, int irq)
+{
+ struct device *dev = gpu->dev;
+ int err;
+
+ if (irq < 0) {
+ dev_err(dev, "failed to get irq: %d\n", irq);
+ return irq;
+ }
+
+ err = devm_request_irq(dev, irq, irq_handler, 0, dev_name(dev), gpu);
+ if (err) {
+ dev_err(dev, "failed to request IRQ %u: %d\n", irq, err);
+ return err;
+ }
+
+ gpu->irq = irq;
+
+ dev_info(dev, "IRQ handler registered, irq = %d\n", irq);
+
+ return 0;
+}
+
static int etnaviv_gpu_platform_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@@ -1837,16 +1860,9 @@ static int etnaviv_gpu_platform_probe(struct platform_device *pdev)
return PTR_ERR(gpu->mmio);
/* Get Interrupt: */
- gpu->irq = platform_get_irq(pdev, 0);
- if (gpu->irq < 0)
- return gpu->irq;
-
- err = devm_request_irq(&pdev->dev, gpu->irq, irq_handler, 0,
- dev_name(gpu->dev), gpu);
- if (err) {
- dev_err(dev, "failed to request IRQ%u: %d\n", gpu->irq, err);
+ err = etnaviv_gpu_register_irq(gpu, platform_get_irq(pdev, 0));
+ if (err)
return err;
- }
/* Get Clocks: */
gpu->clk_reg = devm_clk_get_optional(&pdev->dev, "reg");
--
2.25.1
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