On Tue, Jun 16 2020 at 05:30 -0600, Maulik Shah wrote:
Hi,
On 6/16/2020 11:43 AM, John Stultz wrote:
Allows qcom-pdc driver to be loaded as a permenent module
typo: permanent
Also, due to the fact that IRQCHIP_DECLARE becomes a no-op when
building as a module, we have to add the platform driver hooks
explicitly.
Thanks to Saravana for his help on pointing out the
IRQCHIP_DECLARE issue and guidance on a solution.
Cc: Andy Gross <agross@xxxxxxxxxx>
Cc: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
Cc: Joerg Roedel <joro@xxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Jason Cooper <jason@xxxxxxxxxxxxxx>
Cc: Marc Zyngier <maz@xxxxxxxxxx>
Cc: Linus Walleij <linus.walleij@xxxxxxxxxx>
Cc: Lina Iyer <ilina@xxxxxxxxxxxxxx>
Cc: Saravana Kannan <saravanak@xxxxxxxxxx>
Cc: Todd Kjos <tkjos@xxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: linux-arm-msm@xxxxxxxxxxxxxxx
Cc: iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx
Cc: linux-gpio@xxxxxxxxxxxxxxx
Signed-off-by: John Stultz <john.stultz@xxxxxxxxxx>
---
drivers/irqchip/Kconfig | 2 +-
drivers/irqchip/qcom-pdc.c | 30 ++++++++++++++++++++++++++++++
2 files changed, 31 insertions(+), 1 deletion(-)
diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig
index 29fead208cad..12765bed08f9 100644
--- a/drivers/irqchip/Kconfig
+++ b/drivers/irqchip/Kconfig
@@ -425,7 +425,7 @@ config GOLDFISH_PIC
for Goldfish based virtual platforms.
config QCOM_PDC
- bool "QCOM PDC"
+ tristate "QCOM PDC"
depends on ARCH_QCOM
select IRQ_DOMAIN_HIERARCHY
help
diff --git a/drivers/irqchip/qcom-pdc.c b/drivers/irqchip/qcom-pdc.c
index 6ae9e1f0819d..98d74160afcd 100644
--- a/drivers/irqchip/qcom-pdc.c
+++ b/drivers/irqchip/qcom-pdc.c
@@ -11,7 +11,9 @@
#include <linux/irqdomain.h>
#include <linux/io.h>
#include <linux/kernel.h>
+#include <linux/module.h>
#include <linux/of.h>
+#include <linux/of_irq.h>
please move this include in order after of_device.h
#include <linux/of_address.h>
#include <linux/of_device.h>
#include <linux/soc/qcom/irq.h>
@@ -430,4 +432,32 @@ static int qcom_pdc_init(struct device_node *node, struct device_node *parent)
return ret;
}
+#ifdef MODULE
+static int qcom_pdc_probe(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ struct device_node *parent = of_irq_find_parent(np);
+
+ return qcom_pdc_init(np, parent);
+}
+
+static const struct of_device_id qcom_pdc_match_table[] = {
+ { .compatible = "qcom,pdc" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, qcom_pdc_match_table);
+
+static struct platform_driver qcom_pdc_driver = {
+ .probe = qcom_pdc_probe,
+ .driver = {
+ .name = "qcom-pdc",
+ .of_match_table = qcom_pdc_match_table,
can you please set .suppress_bind_attrs = true,
This is to prevent bind/unbind using sysfs. Once irqchip driver module
is loaded, it shouldn't get unbind at runtime.
That is a good point. We probably should do that to RPMH RSC driver as well.
Thanks,
Maulik
+ },
+};
+module_platform_driver(qcom_pdc_driver);
+#else
IRQCHIP_DECLARE(qcom_pdc, "qcom,pdc", qcom_pdc_init);
+#endif
+
+MODULE_DESCRIPTION("Qualcomm Technologies, Inc. Power Domain Controller");
+MODULE_LICENSE("GPL v2");
--
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