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Date: Tue, 24 Nov 2020 11:32:42 +0100
From: Uwe Kleine-König
<u.kleine-koenig@...gutronix.de>
To: Russell King <linux@...linux.org.uk>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Arnd Bergmann <arnd@...db.de>,
Linus Walleij <linus.walleij@...aro.org>
Cc: Ulf Hansson <ulf.hansson@...aro.org>,
Rob Herring <robh@...nel.org>, kernel@...gutronix.de,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 4/4] amba: Make use of bus_type functions
Instead of assigning the needed functions for each driver separately do it
only once in amba_bustype. Move the definition of the functions to their
proper place among the other callbacks used there.
This prepares getting rid of these callbacks in struct device_driver.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
---
drivers/amba/bus.c | 154 ++++++++++++++++++++++-----------------------
1 file changed, 77 insertions(+), 77 deletions(-)
diff --git a/drivers/amba/bus.c b/drivers/amba/bus.c
index 48b5d4b4e889..2f3799ac3edb 100644
--- a/drivers/amba/bus.c
+++ b/drivers/amba/bus.c
@@ -174,6 +174,80 @@ static int amba_uevent(struct device *dev, struct kobj_uevent_env *env)
return retval;
}
+/*
+ * These are the device model conversion veneers; they convert the
+ * device model structures to our more specific structures.
+ */
+static int amba_probe(struct device *dev)
+{
+ struct amba_device *pcdev = to_amba_device(dev);
+ struct amba_driver *pcdrv = to_amba_driver(dev->driver);
+ const struct amba_id *id = amba_lookup(pcdrv->id_table, pcdev);
+ int ret;
+
+ do {
+ ret = of_clk_set_defaults(dev->of_node, false);
+ if (ret < 0)
+ break;
+
+ ret = dev_pm_domain_attach(dev, true);
+ if (ret)
+ break;
+
+ ret = amba_get_enable_pclk(pcdev);
+ if (ret) {
+ dev_pm_domain_detach(dev, true);
+ break;
+ }
+
+ pm_runtime_get_noresume(dev);
+ pm_runtime_set_active(dev);
+ pm_runtime_enable(dev);
+
+ ret = pcdrv->probe(pcdev, id);
+ if (ret == 0)
+ break;
+
+ pm_runtime_disable(dev);
+ pm_runtime_set_suspended(dev);
+ pm_runtime_put_noidle(dev);
+
+ amba_put_disable_pclk(pcdev);
+ dev_pm_domain_detach(dev, true);
+ } while (0);
+
+ return ret;
+}
+
+static int amba_remove(struct device *dev)
+{
+ struct amba_device *pcdev = to_amba_device(dev);
+ struct amba_driver *drv = to_amba_driver(dev->driver);
+
+ pm_runtime_get_sync(dev);
+ if (drv->remove)
+ drv->remove(pcdev);
+ pm_runtime_put_noidle(dev);
+
+ /* Undo the runtime PM settings in amba_probe() */
+ pm_runtime_disable(dev);
+ pm_runtime_set_suspended(dev);
+ pm_runtime_put_noidle(dev);
+
+ amba_put_disable_pclk(pcdev);
+ dev_pm_domain_detach(dev, true);
+
+ return 0;
+}
+
+static void amba_shutdown(struct device *dev)
+{
+ struct amba_driver *drv = to_amba_driver(dev->driver);
+
+ if (drv->shutdown)
+ drv->shutdown(to_amba_device(dev));
+}
+
#ifdef CONFIG_PM
/*
* Hooks to provide runtime PM of the pclk (bus clock). It is safe to
@@ -239,6 +313,9 @@ struct bus_type amba_bustype = {
.dev_groups = amba_dev_groups,
.match = amba_match,
.uevent = amba_uevent,
+ .probe = amba_probe,
+ .remove = amba_remove,
+ .shutdown = amba_shutdown,
.dma_configure = platform_dma_configure,
.pm = &amba_pm,
};
@@ -251,80 +328,6 @@ static int __init amba_init(void)
postcore_initcall(amba_init);
-/*
- * These are the device model conversion veneers; they convert the
- * device model structures to our more specific structures.
- */
-static int amba_probe(struct device *dev)
-{
- struct amba_device *pcdev = to_amba_device(dev);
- struct amba_driver *pcdrv = to_amba_driver(dev->driver);
- const struct amba_id *id = amba_lookup(pcdrv->id_table, pcdev);
- int ret;
-
- do {
- ret = of_clk_set_defaults(dev->of_node, false);
- if (ret < 0)
- break;
-
- ret = dev_pm_domain_attach(dev, true);
- if (ret)
- break;
-
- ret = amba_get_enable_pclk(pcdev);
- if (ret) {
- dev_pm_domain_detach(dev, true);
- break;
- }
-
- pm_runtime_get_noresume(dev);
- pm_runtime_set_active(dev);
- pm_runtime_enable(dev);
-
- ret = pcdrv->probe(pcdev, id);
- if (ret == 0)
- break;
-
- pm_runtime_disable(dev);
- pm_runtime_set_suspended(dev);
- pm_runtime_put_noidle(dev);
-
- amba_put_disable_pclk(pcdev);
- dev_pm_domain_detach(dev, true);
- } while (0);
-
- return ret;
-}
-
-static int amba_remove(struct device *dev)
-{
- struct amba_device *pcdev = to_amba_device(dev);
- struct amba_driver *drv = to_amba_driver(dev->driver);
-
- pm_runtime_get_sync(dev);
- if (drv->remove)
- drv->remove(pcdev);
- pm_runtime_put_noidle(dev);
-
- /* Undo the runtime PM settings in amba_probe() */
- pm_runtime_disable(dev);
- pm_runtime_set_suspended(dev);
- pm_runtime_put_noidle(dev);
-
- amba_put_disable_pclk(pcdev);
- dev_pm_domain_detach(dev, true);
-
- return 0;
-}
-
-static void amba_shutdown(struct device *dev)
-{
- struct amba_driver *drv = to_amba_driver(dev->driver);
-
- if (drv->shutdown)
- drv->shutdown(to_amba_device(dev));
-}
-
/**
* amba_driver_register - register an AMBA device driver
* @drv: amba device driver structure
@@ -339,9 +342,6 @@ int amba_driver_register(struct amba_driver *drv)
return -EINVAL;
drv->drv.bus = &amba_bustype;
- drv->drv.probe = amba_probe;
- drv->drv.remove = amba_remove;
- drv->drv.shutdown = amba_shutdown;
return driver_register(&drv->drv);
}
--
2.29.2
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