[Intel-wired-lan] [net-next PATCH 5/9] ice: convert clk_freq capability into time_ref
Jacob Keller
jacob.e.keller at intel.com
Mon Oct 11 21:54:29 UTC 2021
Convert the clk_freq value into the associated time_ref frequency value
for E822 devices. This simplifies determining the time reference value
for the clock.
Signed-off-by: Jacob Keller <jacob.e.keller at intel.com>
---
drivers/net/ethernet/intel/ice/ice_common.c | 12 +++++++++++
drivers/net/ethernet/intel/ice/ice_type.h | 23 ++++++++++++++++++++-
2 files changed, 34 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/intel/ice/ice_common.c b/drivers/net/ethernet/intel/ice/ice_common.c
index 53c2fdc909ce..5d438e828a9d 100644
--- a/drivers/net/ethernet/intel/ice/ice_common.c
+++ b/drivers/net/ethernet/intel/ice/ice_common.c
@@ -2188,6 +2188,18 @@ ice_parse_1588_func_caps(struct ice_hw *hw, struct ice_hw_func_caps *func_p,
info->clk_freq = (number & ICE_TS_CLK_FREQ_M) >> ICE_TS_CLK_FREQ_S;
info->clk_src = ((number & ICE_TS_CLK_SRC_M) != 0);
+ if (info->clk_freq < NUM_ICE_TIME_REF_FREQ) {
+ info->time_ref = (enum ice_time_ref_freq)info->clk_freq;
+ } else {
+ /* Unknown clock frequency, so assume a (probably incorrect)
+ * default to avoid out-of-bounds look ups of frequency
+ * related information.
+ */
+ ice_debug(hw, ICE_DBG_INIT, "1588 func caps: unknown clock frequency %u\n",
+ info->clk_freq);
+ info->time_ref = ICE_TIME_REF_FREQ_25_000;
+ }
+
ice_debug(hw, ICE_DBG_INIT, "func caps: ieee_1588 = %u\n",
func_p->common_cap.ieee_1588);
ice_debug(hw, ICE_DBG_INIT, "func caps: src_tmr_owned = %u\n",
diff --git a/drivers/net/ethernet/intel/ice/ice_type.h b/drivers/net/ethernet/intel/ice/ice_type.h
index a316d224fdc8..b8ae79af30cc 100644
--- a/drivers/net/ethernet/intel/ice/ice_type.h
+++ b/drivers/net/ethernet/intel/ice/ice_type.h
@@ -297,9 +297,30 @@ struct ice_hw_common_caps {
#define ICE_TS_TMR_IDX_ASSOC_S 24
#define ICE_TS_TMR_IDX_ASSOC_M BIT(24)
+/* TIME_REF clock rate specification */
+enum ice_time_ref_freq {
+ ICE_TIME_REF_FREQ_25_000 = 0,
+ ICE_TIME_REF_FREQ_122_880 = 1,
+ ICE_TIME_REF_FREQ_125_000 = 2,
+ ICE_TIME_REF_FREQ_153_600 = 3,
+ ICE_TIME_REF_FREQ_156_250 = 4,
+ ICE_TIME_REF_FREQ_245_760 = 5,
+
+ NUM_ICE_TIME_REF_FREQ
+};
+
+/* Clock source specification */
+enum ice_clk_src {
+ ICE_CLK_SRC_TCX0 = 0, /* Temperature compensated oscillator */
+ ICE_CLK_SRC_TIME_REF = 1, /* Use TIME_REF reference clock */
+
+ NUM_ICE_CLK_SRC
+};
+
struct ice_ts_func_info {
/* Function specific info */
- u32 clk_freq;
+ enum ice_time_ref_freq time_ref;
+ u8 clk_freq;
u8 clk_src;
u8 tmr_index_assoc;
u8 ena;
--
2.31.1.331.gb0c09ab8796f
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