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author | Haiying Wang <Haiying.Wang@freescale.com> | 2009-05-01 15:40:47 -0400 |
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committer | Kumar Gala <galak@kernel.crashing.org> | 2009-05-19 00:50:22 -0500 |
commit | 06c4435021f4856261edd01e2691071edeb8fa51 (patch) | |
tree | 54e0a8be20b73d328df5aeae874e725ea7bbc80e /arch/powerpc/sysdev | |
parent | ea5130dcb438840d64a168b67dd221e4d46246b8 (diff) | |
download | linux-06c4435021f4856261edd01e2691071edeb8fa51.tar.bz2 |
powerpc/qe: update risc allocation for QE
Change the RISC allocation to macros instead of enum, add function to read
the number of risc engines from the new property "fsl,qe-num-riscs" under
the qe node in dts. Add new property "fsl,qe-num-riscs" description in
qe.txt
Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com>
Acked-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/sysdev')
-rw-r--r-- | arch/powerpc/sysdev/qe_lib/qe.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/powerpc/sysdev/qe_lib/qe.c b/arch/powerpc/sysdev/qe_lib/qe.c index 01bce3784b0a..2533677ae5eb 100644 --- a/arch/powerpc/sysdev/qe_lib/qe.c +++ b/arch/powerpc/sysdev/qe_lib/qe.c @@ -575,3 +575,31 @@ struct qe_firmware_info *qe_get_firmware_info(void) } EXPORT_SYMBOL(qe_get_firmware_info); +unsigned int qe_get_num_of_risc(void) +{ + struct device_node *qe; + int size; + unsigned int num_of_risc = 0; + const u32 *prop; + + qe = of_find_compatible_node(NULL, NULL, "fsl,qe"); + if (!qe) { + /* Older devices trees did not have an "fsl,qe" + * compatible property, so we need to look for + * the QE node by name. + */ + qe = of_find_node_by_type(NULL, "qe"); + if (!qe) + return num_of_risc; + } + + prop = of_get_property(qe, "fsl,qe-num-riscs", &size); + if (prop && size == sizeof(*prop)) + num_of_risc = *prop; + + of_node_put(qe); + + return num_of_risc; +} +EXPORT_SYMBOL(qe_get_num_of_risc); + |