net: ipa: encapsulate setting the FILT_ROUT_HASH_EN register

Create a new function that encapsulates setting the register flag
that disables filter and routing table hashing for IPA v4.2.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ipa/ipa_main.c b/drivers/net/ipa/ipa_main.c
index 9dfa7f5..cca270d 100644 (file)
--- a/drivers/net/ipa/ipa_main.c
+++ b/drivers/net/ipa/ipa_main.c
@@ -306,6 +306,18 @@ static void ipa_qtime_config(struct ipa *ipa)
        iowrite32(val, ipa->reg_virt + IPA_REG_TIMERS_XO_CLK_DIV_CFG_OFFSET);
 }
 
+static void ipa_hardware_config_hashing(struct ipa *ipa)
+{
+       u32 offset;
+
+       if (ipa->version != IPA_VERSION_4_2)
+               return;
+
+       /* IPA v4.2 does not support hashed tables, so disable them */
+       offset = ipa_reg_filt_rout_hash_en_offset(IPA_VERSION_4_2);
+       iowrite32(0, ipa->reg_virt + offset);
+}
+
 static void ipa_idle_indication_cfg(struct ipa *ipa,
                                    u32 enter_idle_debounce_thresh,
                                    bool const_non_idle_enable)
@@ -390,14 +402,7 @@ static void ipa_hardware_config(struct ipa *ipa, const struct ipa_data *data)
                ipa_qtime_config(ipa);
        }
 
-       /* IPA v4.2 does not support hashed tables, so disable them */
-       if (version == IPA_VERSION_4_2) {
-               u32 offset = ipa_reg_filt_rout_hash_en_offset(version);
-
-               iowrite32(0, ipa->reg_virt + offset);
-       }
-
-       /* Enable dynamic clock division */
+       ipa_hardware_config_hashing(ipa);
        ipa_hardware_dcd_config(ipa);
 }