Commit dc7743aa authored by Tony Lindgren's avatar Tony Lindgren
Browse files

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: default avatarKevin Hilman <khilman@linaro.org>
Tested-by: default avatarKevin Hilman <khilman@linaro.org>
Acked-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent 3e6cee17

drivers/pinctrl/pinctrl-single.c

+23 −0
Original line number Diff line number Diff line
@@ -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 @@ struct pcs_name { 
 * @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 @@ static void pcs_irq_unmask(struct irq_data *d) 
	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 @@ static int pcs_irq_handle(struct pcs_soc_data *pcs_soc) 
		}

	}



	/*

	 * 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 @@ static int pcs_probe(struct platform_device *pdev) 
{

	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 @@ static int pcs_probe(struct platform_device *pdev) 
	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)

include/linux/platform_data/pinctrl-single.h

0 → 100644
+12 −0
Original line number Diff line number Diff line 
/**

 * irq:		optional wake-up interrupt

 * rearm:	optional soc specific rearm function

 *

 * Note that the irq and rearm setup should come from device

 * tree except for omap where there are still some dependencies

 * to the legacy PRM code.

 */

struct pcs_pdata {

	int irq;

	void (*rearm)(void);

};

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