Intel Goshen Ridge reports wrong DP main credits in NVM 27 and earlier,
so add a quirk that fixes it. We also need to expand the quirk table to
match on hardware vendor/device IDs too.
Signed-off-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
---
drivers/thunderbolt/quirks.c | 29 ++++++++++++++++++++++++++---
1 file changed, 26 insertions(+), 3 deletions(-)
diff --git a/drivers/thunderbolt/quirks.c b/drivers/thunderbolt/quirks.c
index 57e2978a3c21..8d73bd7fce15 100644
--- a/drivers/thunderbolt/quirks.c
+++ b/drivers/thunderbolt/quirks.c
@@ -12,7 +12,17 @@ static void quirk_force_power_link(struct tb_switch *sw)
sw->quirks |= QUIRK_FORCE_POWER_LINK_CONTROLLER;
}
+static void quirk_dp_credit_allocation(struct tb_switch *sw)
+{
+ if (sw->credit_allocation && sw->min_dp_main_credits == 56) {
+ sw->min_dp_main_credits = 18;
+ tb_sw_dbg(sw, "quirked DP main: %u\n", sw->min_dp_main_credits);
+ }
+}
+
struct tb_quirk {
+ u16 hw_vendor_id;
+ u16 hw_device_id;
u16 vendor;
u16 device;
void (*hook)(struct tb_switch *sw);
@@ -20,7 +30,12 @@ struct tb_quirk {
static const struct tb_quirk tb_quirks[] = {
/* Dell WD19TB supports self-authentication on unplug */
- { 0x00d4, 0xb070, quirk_force_power_link },
+ { 0x0000, 0x0000, 0x00d4, 0xb070, quirk_force_power_link },
+ /*
+ * Intel Goshen Ridge NVM 27 and before report wrong number of
+ * DP buffers.
+ */
+ { 0x8087, 0x0b26, 0x0000, 0x0000, quirk_dp_credit_allocation },
};
/**
@@ -36,7 +51,15 @@ void tb_check_quirks(struct tb_switch *sw)
for (i = 0; i < ARRAY_SIZE(tb_quirks); i++) {
const struct tb_quirk *q = &tb_quirks[i];
- if (sw->device == q->device && sw->vendor == q->vendor)
- q->hook(sw);
+ if (q->hw_vendor_id && q->hw_vendor_id != sw->config.vendor_id)
+ continue;
+ if (q->hw_device_id && q->hw_device_id != sw->config.device_id)
+ continue;
+ if (q->vendor && q->vendor != sw->vendor)
+ continue;
+ if (q->device && q->device != sw->device)
+ continue;
+
+ q->hook(sw);
}
}
--
2.30.2
