diff options
author | Nishanth Menon <nm@ti.com> | 2014-05-22 15:19:29 -0500 |
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committer | Nishanth Menon <nm@ti.com> | 2014-09-08 10:53:45 -0500 |
commit | a8f83aefcd5a5ec6e420077946d88833a594eb42 (patch) | |
tree | 317624c504d5390b0992de4408f7e9890f2f42a9 /arch/arm/mach-omap2/prm44xx.c | |
parent | 390ddc19e2a56c47b46f11a5ed0a7be8e695dd8a (diff) | |
download | linux-a8f83aefcd5a5ec6e420077946d88833a594eb42.tar.bz2 |
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: Nishanth Menon <nm@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Diffstat (limited to 'arch/arm/mach-omap2/prm44xx.c')
-rw-r--r-- | arch/arm/mach-omap2/prm44xx.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/prm44xx.c b/arch/arm/mach-omap2/prm44xx.c index d4d745e5e64b..5a70c91dea10 100644 --- a/arch/arm/mach-omap2/prm44xx.c +++ b/arch/arm/mach-omap2/prm44xx.c @@ -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); |