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author | Linus Torvalds <torvalds@linux-foundation.org> | 2024-03-21 22:35:20 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2024-03-21 22:35:20 +0300 |
commit | e09bf86f3d53ecf4da61163d88036c4c16419d70 (patch) | |
tree | 48993f46e882041015edb54c0f9ef7e7f98bd5e0 /drivers/usb/typec/altmodes | |
parent | 2ac2b1665d3fbec6ca709dd6ef3ea05f4a51ee4c (diff) | |
parent | a788e53c05aee6e3d60792a59e10c0fac56b5086 (diff) | |
download | linux-e09bf86f3d53ecf4da61163d88036c4c16419d70.tar.xz |
Merge tag 'usb-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB / Thunderbolt updates from Greg KH:
"Here is the big set of USB and Thunderbolt changes for 6.9-rc1. Lots
of tiny changes and forward progress to support new hardware and
better support for existing devices. Included in here are:
- Thunderbolt (i.e. USB4) updates for newer hardware and uses as more
people start to use the hardware
- default USB authentication mode Kconfig and documentation update to
make it more obvious what is going on
- USB typec updates and enhancements
- usual dwc3 driver updates
- usual xhci driver updates
- function USB (i.e. gadget) driver updates and additions
- new device ids for lots of drivers
- loads of other small updates, full details in the shortlog
All of these, including a "last minute regression fix" have been in
linux-next with no reported issues"
* tag 'usb-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (185 commits)
usb: usb-acpi: Fix oops due to freeing uninitialized pld pointer
usb: gadget: net2272: Use irqflags in the call to net2272_probe_fin
usb: gadget: tegra-xudc: Fix USB3 PHY retrieval logic
phy: tegra: xusb: Add API to retrieve the port number of phy
USB: gadget: pxa27x_udc: Remove unused of_gpio.h
usb: gadget/snps_udc_plat: Remove unused of_gpio.h
usb: ohci-pxa27x: Remove unused of_gpio.h
usb: sl811-hcd: only defined function checkdone if QUIRK2 is defined
usb: Clarify expected behavior of dev_bin_attrs_are_visible()
xhci: Allow RPM on the USB controller (1022:43f7) by default
usb: isp1760: remove SLAB_MEM_SPREAD flag usage
usb: misc: onboard_hub: use pointer consistently in the probe function
usb: gadget: fsl: Increase size of name buffer for endpoints
usb: gadget: fsl: Add of device table to enable module autoloading
usb: typec: tcpm: add support to set tcpc connector orientatition
usb: typec: tcpci: add generic tcpci fallback compatible
dt-bindings: usb: typec-tcpci: add tcpci fallback binding
usb: gadget: fsl-udc: Replace custom log wrappers by dev_{err,warn,dbg,vdbg}
usb: core: Set connect_type of ports based on DT node
dt-bindings: usb: Add downstream facing ports to realtek binding
...
Diffstat (limited to 'drivers/usb/typec/altmodes')
-rw-r--r-- | drivers/usb/typec/altmodes/displayport.c | 165 |
1 files changed, 160 insertions, 5 deletions
diff --git a/drivers/usb/typec/altmodes/displayport.c b/drivers/usb/typec/altmodes/displayport.c index f8ea3054be54..038dc51f429d 100644 --- a/drivers/usb/typec/altmodes/displayport.c +++ b/drivers/usb/typec/altmodes/displayport.c @@ -50,13 +50,17 @@ enum { enum dp_state { DP_STATE_IDLE, DP_STATE_ENTER, + DP_STATE_ENTER_PRIME, DP_STATE_UPDATE, DP_STATE_CONFIGURE, + DP_STATE_CONFIGURE_PRIME, DP_STATE_EXIT, + DP_STATE_EXIT_PRIME, }; struct dp_altmode { struct typec_displayport_data data; + struct typec_displayport_data data_prime; enum dp_state state; bool hpd; @@ -67,6 +71,7 @@ struct dp_altmode { struct typec_altmode *alt; const struct typec_altmode *port; struct fwnode_handle *connector_fwnode; + struct typec_altmode *plug_prime; }; static int dp_altmode_notify(struct dp_altmode *dp) @@ -99,12 +104,18 @@ static int dp_altmode_configure(struct dp_altmode *dp, u8 con) conf |= DP_CONF_UFP_U_AS_DFP_D; pin_assign = DP_CAP_UFP_D_PIN_ASSIGN(dp->alt->vdo) & DP_CAP_DFP_D_PIN_ASSIGN(dp->port->vdo); + /* Account for active cable capabilities */ + if (dp->plug_prime) + pin_assign &= DP_CAP_DFP_D_PIN_ASSIGN(dp->plug_prime->vdo); break; case DP_STATUS_CON_UFP_D: case DP_STATUS_CON_BOTH: /* NOTE: First acting as DP source */ conf |= DP_CONF_UFP_U_AS_UFP_D; pin_assign = DP_CAP_PIN_ASSIGN_UFP_D(dp->alt->vdo) & DP_CAP_PIN_ASSIGN_DFP_D(dp->port->vdo); + /* Account for active cable capabilities */ + if (dp->plug_prime) + pin_assign &= DP_CAP_UFP_D_PIN_ASSIGN(dp->plug_prime->vdo); break; default: break; @@ -130,6 +141,8 @@ static int dp_altmode_configure(struct dp_altmode *dp, u8 con) } dp->data.conf = conf; + if (dp->plug_prime) + dp->data_prime.conf = conf; return 0; } @@ -143,13 +156,16 @@ static int dp_altmode_status_update(struct dp_altmode *dp) if (configured && (dp->data.status & DP_STATUS_SWITCH_TO_USB)) { dp->data.conf = 0; - dp->state = DP_STATE_CONFIGURE; + dp->data_prime.conf = 0; + dp->state = dp->plug_prime ? DP_STATE_CONFIGURE_PRIME : + DP_STATE_CONFIGURE; } else if (dp->data.status & DP_STATUS_EXIT_DP_MODE) { dp->state = DP_STATE_EXIT; } else if (!(con & DP_CONF_CURRENTLY(dp->data.conf))) { ret = dp_altmode_configure(dp, con); if (!ret) { - dp->state = DP_STATE_CONFIGURE; + dp->state = dp->plug_prime ? DP_STATE_CONFIGURE_PRIME : + DP_STATE_CONFIGURE; if (dp->hpd != hpd) { dp->hpd = hpd; dp->pending_hpd = true; @@ -209,6 +225,19 @@ static int dp_altmode_configure_vdm(struct dp_altmode *dp, u32 conf) return ret; } +static int dp_altmode_configure_vdm_cable(struct dp_altmode *dp, u32 conf) +{ + int svdm_version = typec_altmode_get_cable_svdm_version(dp->plug_prime); + u32 header; + + if (svdm_version < 0) + return svdm_version; + + header = DP_HEADER(dp, svdm_version, DP_CMD_CONFIGURE); + + return typec_cable_altmode_vdm(dp->plug_prime, TYPEC_PLUG_SOP_P, header, &conf, 2); +} + static void dp_altmode_work(struct work_struct *work) { struct dp_altmode *dp = container_of(work, struct dp_altmode, work); @@ -225,6 +254,19 @@ static void dp_altmode_work(struct work_struct *work) if (ret && ret != -EBUSY) dev_err(&dp->alt->dev, "failed to enter mode\n"); break; + case DP_STATE_ENTER_PRIME: + ret = typec_cable_altmode_enter(dp->alt, TYPEC_PLUG_SOP_P, NULL); + /* + * If we fail to enter Alt Mode on SOP', then we should drop the + * plug from the driver and attempt to run the driver without + * it. + */ + if (ret && ret != -EBUSY) { + dev_err(&dp->alt->dev, "plug failed to enter mode\n"); + dp->state = DP_STATE_ENTER; + goto disable_prime; + } + break; case DP_STATE_UPDATE: svdm_version = typec_altmode_get_svdm_version(dp->alt); if (svdm_version < 0) @@ -243,10 +285,24 @@ static void dp_altmode_work(struct work_struct *work) dev_err(&dp->alt->dev, "unable to send Configure command (%d)\n", ret); break; + case DP_STATE_CONFIGURE_PRIME: + ret = dp_altmode_configure_vdm_cable(dp, dp->data_prime.conf); + if (ret) { + dev_err(&dp->plug_prime->dev, + "unable to send Configure command (%d)\n", + ret); + dp->state = DP_STATE_CONFIGURE; + goto disable_prime; + } + break; case DP_STATE_EXIT: if (typec_altmode_exit(dp->alt)) dev_err(&dp->alt->dev, "Exit Mode Failed!\n"); break; + case DP_STATE_EXIT_PRIME: + if (typec_cable_altmode_exit(dp->plug_prime, TYPEC_PLUG_SOP_P)) + dev_err(&dp->plug_prime->dev, "Exit Mode Failed!\n"); + break; default: break; } @@ -254,6 +310,13 @@ static void dp_altmode_work(struct work_struct *work) dp->state = DP_STATE_IDLE; mutex_unlock(&dp->lock); + return; + +disable_prime: + typec_altmode_put_plug(dp->plug_prime); + dp->plug_prime = NULL; + schedule_work(&dp->work); + mutex_unlock(&dp->lock); } static void dp_altmode_attention(struct typec_altmode *alt, const u32 vdo) @@ -314,6 +377,8 @@ static int dp_altmode_vdm(struct typec_altmode *alt, dp->hpd = false; sysfs_notify(&dp->alt->dev.kobj, "displayport", "hpd"); } + if (dp->plug_prime) + dp->state = DP_STATE_EXIT_PRIME; break; case DP_CMD_STATUS_UPDATE: dp->data.status = *vdo; @@ -348,10 +413,84 @@ err_unlock: return ret; } +static int dp_cable_altmode_vdm(struct typec_altmode *alt, enum typec_plug_index sop, + const u32 hdr, const u32 *vdo, int count) +{ + struct dp_altmode *dp = typec_altmode_get_drvdata(alt); + int cmd_type = PD_VDO_CMDT(hdr); + int cmd = PD_VDO_CMD(hdr); + int ret = 0; + + mutex_lock(&dp->lock); + + if (dp->state != DP_STATE_IDLE) { + ret = -EBUSY; + goto err_unlock; + } + + switch (cmd_type) { + case CMDT_RSP_ACK: + switch (cmd) { + case CMD_ENTER_MODE: + typec_altmode_update_active(dp->plug_prime, true); + dp->state = DP_STATE_ENTER; + break; + case CMD_EXIT_MODE: + dp->data_prime.status = 0; + dp->data_prime.conf = 0; + typec_altmode_update_active(dp->plug_prime, false); + break; + case DP_CMD_CONFIGURE: + dp->state = DP_STATE_CONFIGURE; + break; + default: + break; + } + break; + case CMDT_RSP_NAK: + switch (cmd) { + case DP_CMD_CONFIGURE: + dp->data_prime.conf = 0; + /* Attempt to configure on SOP, drop plug */ + typec_altmode_put_plug(dp->plug_prime); + dp->plug_prime = NULL; + dp->state = DP_STATE_CONFIGURE; + break; + default: + break; + } + break; + default: + break; + } + + if (dp->state != DP_STATE_IDLE) + schedule_work(&dp->work); + +err_unlock: + mutex_unlock(&dp->lock); + return ret; +} + static int dp_altmode_activate(struct typec_altmode *alt, int activate) { - return activate ? typec_altmode_enter(alt, NULL) : - typec_altmode_exit(alt); + struct dp_altmode *dp = typec_altmode_get_drvdata(alt); + int ret; + + if (activate) { + if (dp->plug_prime) { + ret = typec_cable_altmode_enter(alt, TYPEC_PLUG_SOP_P, NULL); + if (ret < 0) { + typec_altmode_put_plug(dp->plug_prime); + dp->plug_prime = NULL; + } else { + return ret; + } + } + return typec_altmode_enter(alt, NULL); + } else { + return typec_altmode_exit(alt); + } } static const struct typec_altmode_ops dp_altmode_ops = { @@ -360,6 +499,10 @@ static const struct typec_altmode_ops dp_altmode_ops = { .activate = dp_altmode_activate, }; +static const struct typec_cable_ops dp_cable_ops = { + .vdm = dp_cable_altmode_vdm, +}; + static const char * const configurations[] = { [DP_CONF_USB] = "USB", [DP_CONF_DFP_D] = "source", @@ -501,6 +644,7 @@ pin_assignment_store(struct device *dev, struct device_attribute *attr, /* Only send Configure command if a configuration has been set */ if (dp->alt->active && DP_CONF_CURRENTLY(dp->data.conf)) { + /* todo: send manual configure over SOP'*/ ret = dp_altmode_configure_vdm(dp, conf); if (ret) goto out_unlock; @@ -579,6 +723,7 @@ static const struct attribute_group *displayport_groups[] = { int dp_altmode_probe(struct typec_altmode *alt) { const struct typec_altmode *port = typec_altmode_get_partner(alt); + struct typec_altmode *plug = typec_altmode_get_plug(alt, TYPEC_PLUG_SOP_P); struct fwnode_handle *fwnode; struct dp_altmode *dp; @@ -603,6 +748,13 @@ int dp_altmode_probe(struct typec_altmode *alt) alt->desc = "DisplayPort"; alt->ops = &dp_altmode_ops; + if (plug) { + plug->desc = "Displayport"; + plug->cable_ops = &dp_cable_ops; + } + + dp->plug_prime = plug; + fwnode = dev_fwnode(alt->dev.parent->parent); /* typec_port fwnode */ if (fwnode_property_present(fwnode, "displayport")) dp->connector_fwnode = fwnode_find_reference(fwnode, "displayport", 0); @@ -612,8 +764,10 @@ int dp_altmode_probe(struct typec_altmode *alt) dp->connector_fwnode = NULL; typec_altmode_set_drvdata(alt, dp); + if (plug) + typec_altmode_set_drvdata(plug, dp); - dp->state = DP_STATE_ENTER; + dp->state = plug ? DP_STATE_ENTER_PRIME : DP_STATE_ENTER; schedule_work(&dp->work); return 0; @@ -625,6 +779,7 @@ void dp_altmode_remove(struct typec_altmode *alt) struct dp_altmode *dp = typec_altmode_get_drvdata(alt); cancel_work_sync(&dp->work); + typec_altmode_put_plug(dp->plug_prime); if (dp->connector_fwnode) { drm_connector_oob_hotplug_event(dp->connector_fwnode, |