pinctrl: single: Add support for auxdata
For omaps, we still have dependencies to the legacy code
for handling the PRM (Power Reset Management) interrupts,
and also for reconfiguring the io wake-up chain after
changes.
Let's pass the PRM interrupt and the rearm functions via
auxdata. Then when at some point we have a proper PRM
driver, we can get the interrupt via device tree and
set up the rearm function as exported function in the
PRM driver.
By using auxdata we can remove a dependency to the
wake-up events for converting omap3 to be device
tree only.
Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
Cc: Grygorii Strashko <grygorii.strashko@ti.com>
Cc: Prakash Manjunathappa <prakash.pm@ti.com>
Cc: Roger Quadros <rogerq@ti.com>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: linux-kernel@vger.kernel.org
Reviewed-by: Kevin Hilman <khilman@linaro.org>
Tested-by: Kevin Hilman <khilman@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c
index dad65df..c2aada7 100644
--- a/drivers/pinctrl/pinctrl-single.c
+++ b/drivers/pinctrl/pinctrl-single.c
@@ -28,6 +28,8 @@
#include <linux/pinctrl/pinmux.h>
#include <linux/pinctrl/pinconf-generic.h>
+#include <linux/platform_data/pinctrl-single.h>
+
#include "core.h"
#include "pinconf.h"
@@ -159,12 +161,14 @@
* @irq: optional interrupt for the controller
* @irq_enable_mask: optional SoC specific interrupt enable mask
* @irq_status_mask: optional SoC specific interrupt status mask
+ * @rearm: optional SoC specific wake-up rearm function
*/
struct pcs_soc_data {
unsigned flags;
int irq;
unsigned irq_enable_mask;
unsigned irq_status_mask;
+ void (*rearm)(void);
};
/**
@@ -1622,6 +1626,8 @@
struct pcs_soc_data *pcs_soc = irq_data_get_irq_chip_data(d);
pcs_irq_set(pcs_soc, d->irq, true);
+ if (pcs_soc->rearm)
+ pcs_soc->rearm();
}
/**
@@ -1672,6 +1678,11 @@
}
}
+ /*
+ * For debugging on omaps, you may want to call pcs_soc->rearm()
+ * here to see wake-up interrupts during runtime also.
+ */
+
return count;
}
@@ -1835,6 +1846,7 @@
{
struct device_node *np = pdev->dev.of_node;
const struct of_device_id *match;
+ struct pcs_pdata *pdata;
struct resource *res;
struct pcs_device *pcs;
const struct pcs_soc_data *soc;
@@ -1949,6 +1961,17 @@
if (pcs->socdata.irq)
pcs->flags |= PCS_FEAT_IRQ;
+ /* We still need auxdata for some omaps for PRM interrupts */
+ pdata = dev_get_platdata(&pdev->dev);
+ if (pdata) {
+ if (pdata->rearm)
+ pcs->socdata.rearm = pdata->rearm;
+ if (pdata->irq) {
+ pcs->socdata.irq = pdata->irq;
+ pcs->flags |= PCS_FEAT_IRQ;
+ }
+ }
+
if (PCS_HAS_IRQ) {
ret = pcs_irq_init_chained_handler(pcs, np);
if (ret < 0)