Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit a8f83aef authored by Nishanth Menon's avatar Nishanth Menon
Browse files

ARM: OMAP4+: PRM: register interrupt information from DT 



Allow the PRM interrupt information to be picked up from device tree.
the only exception is for OMAP4 which uses values pre-populated and allows
compatibility with older dtb.

Signed-off-by: default avatarNishanth Menon <nm@ti.com>
Acked-by: default avatarSantosh Shilimkar <santosh.shilimkar@ti.com>
parent 390ddc19

arch/arm/mach-omap2/prm44xx.c

+40 −0
Original line number Diff line number Diff line
@@ -17,6 +17,7 @@ 
#include <linux/errno.h>

#include <linux/err.h>

#include <linux/io.h>

#include <linux/of_irq.h>





#include "soc.h"
@@ -699,11 +700,50 @@ int __init omap44xx_prm_init(void) 
	return prm_register(&omap44xx_prm_ll_data);

}



static struct of_device_id omap_prm_dt_match_table[] = {

	{ .compatible = "ti,omap4-prm" },

	{ .compatible = "ti,omap5-prm" },

	{ .compatible = "ti,dra7-prm" },

	{ }

};



static int omap44xx_prm_late_init(void)

{

	struct device_node *np;

	int irq_num;



	if (!(prm_features & PRM_HAS_IO_WAKEUP))

		return 0;



	/* OMAP4+ is DT only now */

	if (!of_have_populated_dt())

		return 0;



	np = of_find_matching_node(NULL, omap_prm_dt_match_table);



	if (!np) {

		/* Default loaded up with OMAP4 values */

		if (!cpu_is_omap44xx())

			return 0;

	} else {

		irq_num = of_irq_get(np, 0);

		/*

		 * Already have OMAP4 IRQ num. For all other platforms, we need

		 * IRQ numbers from DT

		 */

		if (irq_num < 0 && !cpu_is_omap44xx()) {

			if (irq_num == -EPROBE_DEFER)

				return irq_num;



			/* Have nothing to do */

			return 0;

		}



		/* Once OMAP4 DT is filled as well */

		if (irq_num >= 0)

			omap4_prcm_irq_setup.irq = irq_num;

	}



	omap44xx_prm_enable_io_wakeup();



	return omap_prcm_register_chain_handler(&omap4_prcm_irq_setup);