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net: ipa: only enable the SUSPEND IPA interrupt when needed

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Only enable the SUSPEND IPA interrupt type when at least one
endpoint has that interrupt enabled.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Alex Elder 2024-04-19 10:17:54 -05:00 committed by Paolo Abeni
parent 2eca734440
commit 6f37002663
2 changed files with 9 additions and 10 deletions
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8
drivers/net/ipa/ipa_interrupt.c
View File

@ -196,6 +196,7 @@ static void ipa_interrupt_suspend_control(struct ipa_interrupt *interrupt,
u32 mask = BIT(endpoint_id % 32);
u32 unit = endpoint_id / 32;
const struct reg *reg;
unsigned long weight;
u32 offset;
u32 val;
@ -205,6 +206,10 @@ static void ipa_interrupt_suspend_control(struct ipa_interrupt *interrupt,
if (ipa->version == IPA_VERSION_3_0)
return;
weight = bitmap_weight(interrupt->suspend_enabled, ipa->endpoint_count);
if (weight == 1 && !enable)
ipa_interrupt_disable(ipa, IPA_IRQ_TX_SUSPEND);
reg = ipa_reg(ipa, IRQ_SUSPEND_EN);
offset = reg_n_offset(reg, unit);
val = ioread32(ipa->reg_virt + offset);
@ -216,6 +221,9 @@ static void ipa_interrupt_suspend_control(struct ipa_interrupt *interrupt,
__change_bit(endpoint_id, interrupt->suspend_enabled);
iowrite32(val, ipa->reg_virt + offset);
if (!weight && enable)
ipa_interrupt_enable(ipa, IPA_IRQ_TX_SUSPEND);
}
/* Enable TX_SUSPEND for an endpoint */

11
drivers/net/ipa/ipa_power.c
View File

@ -234,21 +234,12 @@ void ipa_power_retention(struct ipa *ipa, bool enable)
int ipa_power_setup(struct ipa *ipa)
{
int ret;
ipa_interrupt_enable(ipa, IPA_IRQ_TX_SUSPEND);
ret = device_init_wakeup(ipa->dev, true);
if (ret)
ipa_interrupt_disable(ipa, IPA_IRQ_TX_SUSPEND);
return ret;
return device_init_wakeup(ipa->dev, true);
}
void ipa_power_teardown(struct ipa *ipa)
{
(void)device_init_wakeup(ipa->dev, false);
ipa_interrupt_disable(ipa, IPA_IRQ_TX_SUSPEND);
}
/* Initialize IPA power management */