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ARM: OMAP2+: Prepare for device-tree PMU support

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If device-tree is present, then do not create the PMU device from within
the OMAP specific PMU code. This is required to allow device-tree to
create the PMU device from the PMU device-tree node.

PMU is not currently supported for OMAP4430 (due to a dependency on
having a cross-trigger interface driver) and so ensure that this
indicated on boot with or without device-tree.

Signed-off-by: Jon Hunter <jon-hunter@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Benoit Cousson <benoit.cousson@linaro.org>
This commit is contained in:
Jon Hunter 2012-10-19 14:27:34 -05:00 committed by Benoit Cousson
parent 72f6f95753
commit eeb7ba21ab
1 changed files with 11 additions and 3 deletions
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14
arch/arm/mach-omap2/pmu.c
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@ -11,6 +11,8 @@
* the Free Software Foundation; either version 2 of the License, or * the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version. * (at your option) any later version.
*/ */
#include <linux/of.h>
#include <asm/pmu.h> #include <asm/pmu.h>
#include "soc.h" #include "soc.h"
@ -63,6 +65,15 @@ static int __init omap_init_pmu(void)
unsigned oh_num; unsigned oh_num;
char **oh_names; char **oh_names;
/* XXX Remove this check when the CTI driver is available */
if (cpu_is_omap443x()) {
pr_info("ARM PMU: not yet supported on OMAP4430 due to missing CTI driver\n");
return 0;
}
if (of_have_populated_dt())
return 0;
/* /*
* To create an ARM-PMU device the following HWMODs * To create an ARM-PMU device the following HWMODs
* are required for the various OMAP2+ devices. * are required for the various OMAP2+ devices.
@ -75,9 +86,6 @@ static int __init omap_init_pmu(void)
if (cpu_is_omap443x()) { if (cpu_is_omap443x()) {
oh_num = ARRAY_SIZE(omap4430_pmu_oh_names); oh_num = ARRAY_SIZE(omap4430_pmu_oh_names);
oh_names = omap4430_pmu_oh_names; oh_names = omap4430_pmu_oh_names;
/* XXX Remove the next two lines when CTI driver available */
pr_info("ARM PMU: not yet supported on OMAP4430 due to missing CTI driver\n");
return 0;
} else if (cpu_is_omap34xx() || cpu_is_omap44xx()) { } else if (cpu_is_omap34xx() || cpu_is_omap44xx()) {
oh_num = ARRAY_SIZE(omap3_pmu_oh_names); oh_num = ARRAY_SIZE(omap3_pmu_oh_names);
oh_names = omap3_pmu_oh_names; oh_names = omap3_pmu_oh_names;