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thunderbolt: Add quirk to disable CLx
Add QUIRK_NO_CLX to disable the CLx state for hardware which doesn't supports it. AMD Yellow Carp and Pink Sardine don't support CLx state, hence disabling it using QUIRK_NO_CLX. Cc: stable@vger.kernel.org Signed-off-by: Sanjay R Mehta <sanju.mehta@amd.com> Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com> [mw: added debug log when the quirk is run] Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
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fe15c26ee2
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7af9da8ce8
2 changed files with 21 additions and 3 deletions
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@ -20,6 +20,12 @@ static void quirk_dp_credit_allocation(struct tb_switch *sw)
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}
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}
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static void quirk_clx_disable(struct tb_switch *sw)
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{
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sw->quirks |= QUIRK_NO_CLX;
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tb_sw_dbg(sw, "disabling CL states\n");
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}
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struct tb_quirk {
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u16 hw_vendor_id;
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u16 hw_device_id;
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@ -37,6 +43,13 @@ static const struct tb_quirk tb_quirks[] = {
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* DP buffers.
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*/
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{ 0x8087, 0x0b26, 0x0000, 0x0000, quirk_dp_credit_allocation },
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/*
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* CLx is not supported on AMD USB4 Yellow Carp and Pink Sardine platforms.
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*/
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{ 0x0438, 0x0208, 0x0000, 0x0000, quirk_clx_disable },
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{ 0x0438, 0x0209, 0x0000, 0x0000, quirk_clx_disable },
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{ 0x0438, 0x020a, 0x0000, 0x0000, quirk_clx_disable },
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{ 0x0438, 0x020b, 0x0000, 0x0000, quirk_clx_disable },
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};
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/**
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@ -23,6 +23,11 @@
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#define NVM_MAX_SIZE SZ_512K
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#define NVM_DATA_DWORDS 16
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/* Keep link controller awake during update */
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#define QUIRK_FORCE_POWER_LINK_CONTROLLER BIT(0)
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/* Disable CLx if not supported */
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#define QUIRK_NO_CLX BIT(1)
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/**
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* struct tb_nvm - Structure holding NVM information
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* @dev: Owner of the NVM
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@ -1019,6 +1024,9 @@ static inline bool tb_switch_is_clx_enabled(const struct tb_switch *sw,
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*/
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static inline bool tb_switch_is_clx_supported(const struct tb_switch *sw)
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{
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if (sw->quirks & QUIRK_NO_CLX)
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return false;
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return tb_switch_is_usb4(sw) || tb_switch_is_titan_ridge(sw);
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}
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@ -1291,9 +1299,6 @@ struct usb4_port *usb4_port_device_add(struct tb_port *port);
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void usb4_port_device_remove(struct usb4_port *usb4);
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int usb4_port_device_resume(struct usb4_port *usb4);
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/* Keep link controller awake during update */
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#define QUIRK_FORCE_POWER_LINK_CONTROLLER BIT(0)
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void tb_check_quirks(struct tb_switch *sw);
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#ifdef CONFIG_ACPI
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