diff options
| author | Colin Foster <colin.foster@in-advantage.com> | 2022-02-13 22:12:53 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-02-14 16:24:29 +0300 |
| commit | 40f3a5c81555880a437dfd3301826074dff18138 (patch) | |
| tree | 320d17e4662dadc24f4163673b7db1d502340f95 /drivers/net/ethernet/mscc | |
| parent | 65c53595bc2a14e77b455c8a12fc2631cbe43868 (diff) | |
| download | linux-40f3a5c81555880a437dfd3301826074dff18138.tar.xz | |
net: mscc: ocelot: add ability to perform bulk reads
Regmap supports bulk register reads. Ocelot does not. This patch adds
support for Ocelot to invoke bulk regmap reads. That will allow any driver
that performs consecutive reads over memory regions to optimize that
access.
Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mscc')
| -rw-r--r-- | drivers/net/ethernet/mscc/ocelot_io.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mscc/ocelot_io.c b/drivers/net/ethernet/mscc/ocelot_io.c index 7390fa3980ec..2067382d0ee1 100644 --- a/drivers/net/ethernet/mscc/ocelot_io.c +++ b/drivers/net/ethernet/mscc/ocelot_io.c @@ -10,6 +10,19 @@ #include "ocelot.h" +int __ocelot_bulk_read_ix(struct ocelot *ocelot, u32 reg, u32 offset, void *buf, + int count) +{ + u16 target = reg >> TARGET_OFFSET; + + WARN_ON(!target); + + return regmap_bulk_read(ocelot->targets[target], + ocelot->map[target][reg & REG_MASK] + offset, + buf, count); +} +EXPORT_SYMBOL_GPL(__ocelot_bulk_read_ix); + u32 __ocelot_read_ix(struct ocelot *ocelot, u32 reg, u32 offset) { u16 target = reg >> TARGET_OFFSET; |