diff options
| author | Jiri Pirko <jiri@nvidia.com> | 2024-01-03 14:28:36 +0100 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-01-05 07:58:19 -0800 |
| commit | 8a6286c1804e2c7144aef3154a0357c4b496e10b (patch) | |
| tree | 6f7e86daa06fe9de97c1fb35703b151c56e14096 /drivers/dpll | |
| parent | 82e7b22f647202ecd8f25de2bd3f1276bbd34989 (diff) | |
| download | linux-8a6286c1804e2c7144aef3154a0357c4b496e10b.tar.gz | |
dpll: expose fractional frequency offset value to user
Add a new netlink attribute to expose fractional frequency offset value
for a pin. Add an op to get the value from the driver.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Acked-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Acked-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@intel.com>
Link: https://lore.kernel.org/r/20240103132838.1501801-2-jiri@resnulli.us
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/dpll')
| -rw-r--r-- | drivers/dpll/dpll_netlink.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/dpll/dpll_netlink.c b/drivers/dpll/dpll_netlink.c index 21c627e9401a2..3370dbddb86bd 100644 --- a/drivers/dpll/dpll_netlink.c +++ b/drivers/dpll/dpll_netlink.c @@ -263,6 +263,27 @@ dpll_msg_add_phase_offset(struct sk_buff *msg, struct dpll_pin *pin, return 0; } +static int dpll_msg_add_ffo(struct sk_buff *msg, struct dpll_pin *pin, + struct dpll_pin_ref *ref, + struct netlink_ext_ack *extack) +{ + const struct dpll_pin_ops *ops = dpll_pin_ops(ref); + struct dpll_device *dpll = ref->dpll; + s64 ffo; + int ret; + + if (!ops->ffo_get) + return 0; + ret = ops->ffo_get(pin, dpll_pin_on_dpll_priv(dpll, pin), + dpll, dpll_priv(dpll), &ffo, extack); + if (ret) { + if (ret == -ENODATA) + return 0; + return ret; + } + return nla_put_sint(msg, DPLL_A_PIN_FRACTIONAL_FREQUENCY_OFFSET, ffo); +} + static int dpll_msg_add_pin_freq(struct sk_buff *msg, struct dpll_pin *pin, struct dpll_pin_ref *ref, struct netlink_ext_ack *extack) @@ -442,6 +463,9 @@ dpll_cmd_pin_get_one(struct sk_buff *msg, struct dpll_pin *pin, ret = dpll_msg_add_pin_phase_adjust(msg, pin, ref, extack); if (ret) return ret; + ret = dpll_msg_add_ffo(msg, pin, ref, extack); + if (ret) + return ret; if (xa_empty(&pin->parent_refs)) ret = dpll_msg_add_pin_dplls(msg, pin, extack); else |