diff options
| author | Mika Westerberg <mika.westerberg@linux.intel.com> | 2021-03-23 19:05:23 +0200 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com> | 2021-06-01 10:48:59 +0300 |
| commit | 7c37bb304fd6c085f9630d1740ed53781d4d4821 (patch) | |
| tree | 1b53d92b64020afdf98e4caa566a1e07ad08c645 /drivers/thunderbolt | |
| parent | 6ed541c53edcd5bf3cbd9fd600fd593e95ec79fb (diff) | |
| download | linux-7c37bb304fd6c085f9630d1740ed53781d4d4821.tar.gz linux-7c37bb304fd6c085f9630d1740ed53781d4d4821.tar.bz2 linux-7c37bb304fd6c085f9630d1740ed53781d4d4821.zip | |
thunderbolt: Add quirk for Intel Goshen Ridge DP credits
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@linux.intel.com>
Diffstat (limited to 'drivers/thunderbolt')
| -rw-r--r-- | drivers/thunderbolt/quirks.c | 31 |
1 files changed, 27 insertions, 4 deletions
diff --git a/drivers/thunderbolt/quirks.c b/drivers/thunderbolt/quirks.c index 892cf0e8ada5..b5f2ec79c4d6 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); @@ -20,8 +30,13 @@ struct tb_quirk { static const struct tb_quirk tb_quirks[] = { /* Dell WD19TB supports self-authentication on unplug */ - { 0x00d4, 0xb070, quirk_force_power_link }, - { 0x00d4, 0xb071, quirk_force_power_link }, + { 0x0000, 0x0000, 0x00d4, 0xb070, quirk_force_power_link }, + { 0x0000, 0x0000, 0x00d4, 0xb071, 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 }, }; /** @@ -37,7 +52,15 @@ 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); } } |