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| author | Rasmus Villemoes <rasmus.villemoes@prevas.dk> | 2019-05-13 11:15:00 +0000 |
|---|---|---|
| committer | Li Yang <leoyang.li@nxp.com> | 2019-06-05 14:26:39 -0500 |
| commit | 5cfca8911ddd59150ba53cff16956eabe1b3dcac (patch) | |
| tree | cfe0677a7ec0738a26ddb88582eda2ae40c1b209 /drivers/soc | |
| parent | 8f762fe5819f8561343cf02e234789744ed68a98 (diff) | |
| download | linux-stable-5cfca8911ddd59150ba53cff16956eabe1b3dcac.tar.gz linux-stable-5cfca8911ddd59150ba53cff16956eabe1b3dcac.tar.bz2 linux-stable-5cfca8911ddd59150ba53cff16956eabe1b3dcac.zip | |
soc: fsl: qe: support fsl,qe-snums property
Add driver support for the newly introduced fsl,qe-snums property.
Conveniently, of_property_read_variable_u8_array does exactly what we
need: If the property fsl,qe-snums is found (and has an allowed size),
the array of values get copied to snums, and the return value is the
number of snums - we cannot assign directly to num_of_snums, since we
need to check whether the return value is negative.
Reviewed-by: Christophe Leroy <christophe.leroy@c-s.fr>
Reviewed-by: Qiang Zhao <qiang.zhao@nxp.com>
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
Diffstat (limited to 'drivers/soc')
| -rw-r--r-- | drivers/soc/fsl/qe/qe.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/soc/fsl/qe/qe.c b/drivers/soc/fsl/qe/qe.c index 4b444846d590..1d27187b251c 100644 --- a/drivers/soc/fsl/qe/qe.c +++ b/drivers/soc/fsl/qe/qe.c @@ -283,7 +283,6 @@ EXPORT_SYMBOL(qe_clock_source); */ static void qe_snums_init(void) { - int i; static const u8 snum_init_76[] = { 0x04, 0x05, 0x0C, 0x0D, 0x14, 0x15, 0x1C, 0x1D, 0x24, 0x25, 0x2C, 0x2D, 0x34, 0x35, 0x88, 0x89, @@ -304,7 +303,21 @@ static void qe_snums_init(void) 0x28, 0x29, 0x38, 0x39, 0x48, 0x49, 0x58, 0x59, 0x68, 0x69, 0x78, 0x79, 0x80, 0x81, }; + struct device_node *qe; const u8 *snum_init; + int i; + + bitmap_zero(snum_state, QE_NUM_OF_SNUM); + qe = qe_get_device_node(); + if (qe) { + i = of_property_read_variable_u8_array(qe, "fsl,qe-snums", + snums, 1, QE_NUM_OF_SNUM); + of_node_put(qe); + if (i > 0) { + qe_num_of_snum = i; + return; + } + } qe_num_of_snum = qe_get_num_of_snums(); @@ -313,7 +326,6 @@ static void qe_snums_init(void) else snum_init = snum_init_46; - bitmap_zero(snum_state, QE_NUM_OF_SNUM); memcpy(snums, snum_init, qe_num_of_snum); } |