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chrome platform changes for 5.11 

cros_ec_typec:
 * A series from Prashant for Type-C to implement TYPEC_STATUS, parsing USB PD
   Partner ID VDOs, and registering partner altmodes.
 
 cros_ec misc:
 * Don't treat RTC events as wakeup sources in cros_ec_proto
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Merge tag 'tag-chrome-platform-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux

Pull chrome platform updates from Benson Leung:
 "cros_ec_typec:

   - A series from Prashant for Type-C to implement TYPEC_STATUS,
     parsing USB PD Partner ID VDOs, and registering partner altmodes.

  cros_ec misc:

   - Don't treat RTC events as wakeup sources in cros_ec_proto"

* tag 'tag-chrome-platform-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux:
  platform/chrome: cros_ec_typec: Tolerate unrecognized mux flags
  platform/chrome: cros_ec_typec: Register partner altmodes
  platform/chrome: cros_ec_typec: Parse partner PD ID VDOs
  platform/chrome: cros_ec_typec: Introduce TYPEC_STATUS
  platform/chrome: cros_ec: Import Type C host commands
  platform/chrome: cros_ec_typec: Clear partner identity on device removal
  platform/chrome: cros_ec_typec: Fix remove partner logic
  platform/chrome: cros_ec_typec: Relocate set_port_params_v*() functions
  platform/chrome: Don't treat RTC events as wakeup sources
This commit is contained in:
Linus Torvalds 2020-12-23 15:06:22 -08:00
Родитель 6755f45631 6ae9b5ffca
Коммит a088159675
3 изменённых файлов: 427 добавлений и 78 удалений
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14
drivers/platform/chrome/cros_ec_proto.c
Просмотреть файл

@ -742,12 +742,16 @@ int cros_ec_get_next_event(struct cros_ec_device *ec_dev,
* Sensor events need to be parsed by the sensor sub-device.
* Defer them, and don't report the wakeup here.
*/
if (event_type == EC_MKBP_EVENT_SENSOR_FIFO)
*wake_event = false;
/* Masked host-events should not count as wake events. */
else if (host_event &&
!(host_event & ec_dev->host_event_wake_mask))
if (event_type == EC_MKBP_EVENT_SENSOR_FIFO) {
*wake_event = false;
} else if (host_event) {
/* rtc_update_irq() already handles wakeup events. */
if (host_event & EC_HOST_EVENT_MASK(EC_HOST_EVENT_RTC))
*wake_event = false;
/* Masked host-events should not count as wake events. */
if (!(host_event & ec_dev->host_event_wake_mask))
*wake_event = false;
}
}
return ret;

336
drivers/platform/chrome/cros_ec_typec.c
Просмотреть файл

@ -7,6 +7,7 @@
*/
#include <linux/acpi.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_data/cros_ec_commands.h>
@ -14,6 +15,7 @@
#include <linux/platform_data/cros_usbpd_notify.h>
#include <linux/platform_device.h>
#include <linux/usb/pd.h>
#include <linux/usb/pd_vdo.h>
#include <linux/usb/typec.h>
#include <linux/usb/typec_altmode.h>
#include <linux/usb/typec_dp.h>
@ -30,6 +32,12 @@ enum {
CROS_EC_ALTMODE_MAX,
};
/* Container for altmode pointer nodes. */
struct cros_typec_altmode_node {
struct typec_altmode *amode;
struct list_head list;
};
/* Per port data. */
struct cros_typec_port {
struct typec_port *port;
@ -48,6 +56,11 @@ struct cros_typec_port {
/* Port alt modes. */
struct typec_altmode p_altmode[CROS_EC_ALTMODE_MAX];
/* Flag indicating that PD discovery data parsing is completed. */
bool disc_done;
struct ec_response_typec_discovery *sop_disc;
struct list_head partner_mode_list;
};
/* Platform-specific data for the Chrome OS EC Type C controller. */
@ -60,6 +73,7 @@ struct cros_typec_data {
struct cros_typec_port *ports[EC_USB_PD_MAX_PORTS];
struct notifier_block nb;
struct work_struct port_work;
bool typec_cmd_supported;
};
static int cros_typec_parse_port_props(struct typec_capability *cap,
@ -166,11 +180,25 @@ static int cros_typec_add_partner(struct cros_typec_data *typec, int port_num,
return ret;
}
static void cros_typec_unregister_altmodes(struct cros_typec_data *typec, int port_num)
{
struct cros_typec_port *port = typec->ports[port_num];
struct cros_typec_altmode_node *node, *tmp;
list_for_each_entry_safe(node, tmp, &port->partner_mode_list, list) {
list_del(&node->list);
typec_unregister_altmode(node->amode);
devm_kfree(typec->dev, node);
}
}
static void cros_typec_remove_partner(struct cros_typec_data *typec,
int port_num)
{
struct cros_typec_port *port = typec->ports[port_num];
cros_typec_unregister_altmodes(typec, port_num);
port->state.alt = NULL;
port->state.mode = TYPEC_STATE_USB;
port->state.data = NULL;
@ -181,6 +209,8 @@ static void cros_typec_remove_partner(struct cros_typec_data *typec,
typec_unregister_partner(port->partner);
port->partner = NULL;
memset(&port->p_identity, 0, sizeof(port->p_identity));
port->disc_done = false;
}
static void cros_unregister_ports(struct cros_typec_data *typec)
@ -190,7 +220,10 @@ static void cros_unregister_ports(struct cros_typec_data *typec)
for (i = 0; i < typec->num_ports; i++) {
if (!typec->ports[i])
continue;
cros_typec_remove_partner(typec, i);
if (typec->ports[i]->partner)
cros_typec_remove_partner(typec, i);
usb_role_switch_put(typec->ports[i]->role_sw);
typec_switch_put(typec->ports[i]->ori_sw);
typec_mux_put(typec->ports[i]->mux);
@ -289,6 +322,14 @@ static int cros_typec_init_ports(struct cros_typec_data *typec)
port_num);
cros_typec_register_port_altmodes(typec, port_num);
cros_port->sop_disc = devm_kzalloc(dev, EC_PROTO2_MAX_RESPONSE_SIZE, GFP_KERNEL);
if (!cros_port->sop_disc) {
ret = -ENOMEM;
goto unregister_ports;
}
INIT_LIST_HEAD(&cros_port->partner_mode_list);
}
return 0;
@ -329,74 +370,6 @@ static int cros_typec_ec_command(struct cros_typec_data *typec,
return ret;
}
static void cros_typec_set_port_params_v0(struct cros_typec_data *typec,
int port_num, struct ec_response_usb_pd_control *resp)
{
struct typec_port *port = typec->ports[port_num]->port;
enum typec_orientation polarity;
if (!resp->enabled)
polarity = TYPEC_ORIENTATION_NONE;
else if (!resp->polarity)
polarity = TYPEC_ORIENTATION_NORMAL;
else
polarity = TYPEC_ORIENTATION_REVERSE;
typec_set_pwr_role(port, resp->role ? TYPEC_SOURCE : TYPEC_SINK);
typec_set_orientation(port, polarity);
}
static void cros_typec_set_port_params_v1(struct cros_typec_data *typec,
int port_num, struct ec_response_usb_pd_control_v1 *resp)
{
struct typec_port *port = typec->ports[port_num]->port;
enum typec_orientation polarity;
bool pd_en;
int ret;
if (!(resp->enabled & PD_CTRL_RESP_ENABLED_CONNECTED))
polarity = TYPEC_ORIENTATION_NONE;
else if (!resp->polarity)
polarity = TYPEC_ORIENTATION_NORMAL;
else
polarity = TYPEC_ORIENTATION_REVERSE;
typec_set_orientation(port, polarity);
typec_set_data_role(port, resp->role & PD_CTRL_RESP_ROLE_DATA ?
TYPEC_HOST : TYPEC_DEVICE);
typec_set_pwr_role(port, resp->role & PD_CTRL_RESP_ROLE_POWER ?
TYPEC_SOURCE : TYPEC_SINK);
typec_set_vconn_role(port, resp->role & PD_CTRL_RESP_ROLE_VCONN ?
TYPEC_SOURCE : TYPEC_SINK);
/* Register/remove partners when a connect/disconnect occurs. */
if (resp->enabled & PD_CTRL_RESP_ENABLED_CONNECTED) {
if (typec->ports[port_num]->partner)
return;
pd_en = resp->enabled & PD_CTRL_RESP_ENABLED_PD_CAPABLE;
ret = cros_typec_add_partner(typec, port_num, pd_en);
if (ret)
dev_warn(typec->dev,
"Failed to register partner on port: %d\n",
port_num);
} else {
if (!typec->ports[port_num]->partner)
return;
cros_typec_remove_partner(typec, port_num);
}
}
static int cros_typec_get_mux_info(struct cros_typec_data *typec, int port_num,
struct ec_response_usb_pd_mux_info *resp)
{
struct ec_params_usb_pd_mux_info req = {
.port = port_num,
};
return cros_typec_ec_command(typec, 0, EC_CMD_USB_PD_MUX_INFO, &req,
sizeof(req), resp, sizeof(*resp));
}
static int cros_typec_usb_safe_state(struct cros_typec_port *port)
{
port->state.mode = TYPEC_STATE_SAFE;
@ -563,15 +536,210 @@ static int cros_typec_configure_mux(struct cros_typec_data *typec, int port_num,
port->state.mode = TYPEC_STATE_USB;
ret = typec_mux_set(port->mux, &port->state);
} else {
dev_info(typec->dev,
"Unsupported mode requested, mux flags: %x\n",
mux_flags);
ret = -ENOTSUPP;
dev_dbg(typec->dev,
"Unrecognized mode requested, mux flags: %x\n",
mux_flags);
}
return ret;
}
static void cros_typec_set_port_params_v0(struct cros_typec_data *typec,
int port_num, struct ec_response_usb_pd_control *resp)
{
struct typec_port *port = typec->ports[port_num]->port;
enum typec_orientation polarity;
if (!resp->enabled)
polarity = TYPEC_ORIENTATION_NONE;
else if (!resp->polarity)
polarity = TYPEC_ORIENTATION_NORMAL;
else
polarity = TYPEC_ORIENTATION_REVERSE;
typec_set_pwr_role(port, resp->role ? TYPEC_SOURCE : TYPEC_SINK);
typec_set_orientation(port, polarity);
}
static void cros_typec_set_port_params_v1(struct cros_typec_data *typec,
int port_num, struct ec_response_usb_pd_control_v1 *resp)
{
struct typec_port *port = typec->ports[port_num]->port;
enum typec_orientation polarity;
bool pd_en;
int ret;
if (!(resp->enabled & PD_CTRL_RESP_ENABLED_CONNECTED))
polarity = TYPEC_ORIENTATION_NONE;
else if (!resp->polarity)
polarity = TYPEC_ORIENTATION_NORMAL;
else
polarity = TYPEC_ORIENTATION_REVERSE;
typec_set_orientation(port, polarity);
typec_set_data_role(port, resp->role & PD_CTRL_RESP_ROLE_DATA ?
TYPEC_HOST : TYPEC_DEVICE);
typec_set_pwr_role(port, resp->role & PD_CTRL_RESP_ROLE_POWER ?
TYPEC_SOURCE : TYPEC_SINK);
typec_set_vconn_role(port, resp->role & PD_CTRL_RESP_ROLE_VCONN ?
TYPEC_SOURCE : TYPEC_SINK);
/* Register/remove partners when a connect/disconnect occurs. */
if (resp->enabled & PD_CTRL_RESP_ENABLED_CONNECTED) {
if (typec->ports[port_num]->partner)
return;
pd_en = resp->enabled & PD_CTRL_RESP_ENABLED_PD_CAPABLE;
ret = cros_typec_add_partner(typec, port_num, pd_en);
if (ret)
dev_warn(typec->dev,
"Failed to register partner on port: %d\n",
port_num);
} else {
if (!typec->ports[port_num]->partner)
return;
cros_typec_remove_partner(typec, port_num);
}
}
static int cros_typec_get_mux_info(struct cros_typec_data *typec, int port_num,
struct ec_response_usb_pd_mux_info *resp)
{
struct ec_params_usb_pd_mux_info req = {
.port = port_num,
};
return cros_typec_ec_command(typec, 0, EC_CMD_USB_PD_MUX_INFO, &req,
sizeof(req), resp, sizeof(*resp));
}
static int cros_typec_register_altmodes(struct cros_typec_data *typec, int port_num)
{
struct cros_typec_port *port = typec->ports[port_num];
struct ec_response_typec_discovery *sop_disc = port->sop_disc;
struct cros_typec_altmode_node *node;
struct typec_altmode_desc desc;
struct typec_altmode *amode;
int ret = 0;
int i, j;
for (i = 0; i < sop_disc->svid_count; i++) {
for (j = 0; j < sop_disc->svids[i].mode_count; j++) {
memset(&desc, 0, sizeof(desc));
desc.svid = sop_disc->svids[i].svid;
desc.mode = j;
desc.vdo = sop_disc->svids[i].mode_vdo[j];
amode = typec_partner_register_altmode(port->partner, &desc);
if (IS_ERR(amode)) {
ret = PTR_ERR(amode);
goto err_cleanup;
}
/* If no memory is available we should unregister and exit. */
node = devm_kzalloc(typec->dev, sizeof(*node), GFP_KERNEL);
if (!node) {
ret = -ENOMEM;
typec_unregister_altmode(amode);
goto err_cleanup;
}
node->amode = amode;
list_add_tail(&node->list, &port->partner_mode_list);
}
}
return 0;
err_cleanup:
cros_typec_unregister_altmodes(typec, port_num);
return ret;
}
static int cros_typec_handle_sop_disc(struct cros_typec_data *typec, int port_num)
{
struct cros_typec_port *port = typec->ports[port_num];
struct ec_response_typec_discovery *sop_disc = port->sop_disc;
struct ec_params_typec_discovery req = {
.port = port_num,
.partner_type = TYPEC_PARTNER_SOP,
};
int ret = 0;
int i;
if (!port->partner) {
dev_err(typec->dev,
"SOP Discovery received without partner registered, port: %d\n",
port_num);
ret = -EINVAL;
goto disc_exit;
}
memset(sop_disc, 0, EC_PROTO2_MAX_RESPONSE_SIZE);
ret = cros_typec_ec_command(typec, 0, EC_CMD_TYPEC_DISCOVERY, &req, sizeof(req),
sop_disc, EC_PROTO2_MAX_RESPONSE_SIZE);
if (ret < 0) {
dev_err(typec->dev, "Failed to get SOP discovery data for port: %d\n", port_num);
goto disc_exit;
}
/* First, update the PD identity VDOs for the partner. */
if (sop_disc->identity_count > 0)
port->p_identity.id_header = sop_disc->discovery_vdo[0];
if (sop_disc->identity_count > 1)
port->p_identity.cert_stat = sop_disc->discovery_vdo[1];
if (sop_disc->identity_count > 2)
port->p_identity.product = sop_disc->discovery_vdo[2];
/* Copy the remaining identity VDOs till a maximum of 6. */
for (i = 3; i < sop_disc->identity_count && i < VDO_MAX_OBJECTS; i++)
port->p_identity.vdo[i - 3] = sop_disc->discovery_vdo[i];
ret = typec_partner_set_identity(port->partner);
if (ret < 0) {
dev_err(typec->dev, "Failed to update partner PD identity, port: %d\n", port_num);
goto disc_exit;
}
ret = cros_typec_register_altmodes(typec, port_num);
if (ret < 0) {
dev_err(typec->dev, "Failed to register partner altmodes, port: %d\n", port_num);
goto disc_exit;
}
disc_exit:
return ret;
}
static void cros_typec_handle_status(struct cros_typec_data *typec, int port_num)
{
struct ec_response_typec_status resp;
struct ec_params_typec_status req = {
.port = port_num,
};
int ret;
ret = cros_typec_ec_command(typec, 0, EC_CMD_TYPEC_STATUS, &req, sizeof(req),
&resp, sizeof(resp));
if (ret < 0) {
dev_warn(typec->dev, "EC_CMD_TYPEC_STATUS failed for port: %d\n", port_num);
return;
}
if (typec->ports[port_num]->disc_done)
return;
/* Handle any events appropriately. */
if (resp.events & PD_STATUS_EVENT_SOP_DISC_DONE) {
ret = cros_typec_handle_sop_disc(typec, port_num);
if (ret < 0) {
dev_err(typec->dev, "Couldn't parse SOP Disc data, port: %d\n", port_num);
return;
}
typec->ports[port_num]->disc_done = true;
}
}
static int cros_typec_port_update(struct cros_typec_data *typec, int port_num)
{
struct ec_params_usb_pd_control req;
@ -608,6 +776,9 @@ static int cros_typec_port_update(struct cros_typec_data *typec, int port_num)
cros_typec_set_port_params_v0(typec, port_num,
(struct ec_response_usb_pd_control *) &resp);
if (typec->typec_cmd_supported)
cros_typec_handle_status(typec, port_num);
/* Update the switches if they exist, according to requested state */
ret = cros_typec_get_mux_info(typec, port_num, &mux_resp);
if (ret < 0) {
@ -656,6 +827,23 @@ static int cros_typec_get_cmd_version(struct cros_typec_data *typec)
return 0;
}
/* Check the EC feature flags to see if TYPEC_* commands are supported. */
static int cros_typec_cmds_supported(struct cros_typec_data *typec)
{
struct ec_response_get_features resp = {};
int ret;
ret = cros_typec_ec_command(typec, 0, EC_CMD_GET_FEATURES, NULL, 0,
&resp, sizeof(resp));
if (ret < 0) {
dev_warn(typec->dev,
"Failed to get features, assuming typec commands unsupported.\n");
return 0;
}
return resp.flags[EC_FEATURE_TYPEC_CMD / 32] & EC_FEATURE_MASK_1(EC_FEATURE_TYPEC_CMD);
}
static void cros_typec_port_work(struct work_struct *work)
{
struct cros_typec_data *typec = container_of(work, struct cros_typec_data, port_work);
@ -715,6 +903,8 @@ static int cros_typec_probe(struct platform_device *pdev)
return ret;
}
typec->typec_cmd_supported = !!cros_typec_cmds_supported(typec);
ret = cros_typec_ec_command(typec, 0, EC_CMD_USB_PD_PORTS, NULL, 0,
&resp, sizeof(resp));
if (ret < 0)

155
include/linux/platform_data/cros_ec_commands.h
Просмотреть файл

@ -1284,6 +1284,8 @@ enum ec_feature_code {
EC_FEATURE_SCP = 39,
/* The MCU is an Integrated Sensor Hub */
EC_FEATURE_ISH = 40,
/* New TCPMv2 TYPEC_ prefaced commands supported */
EC_FEATURE_TYPEC_CMD = 41,
};
#define EC_FEATURE_MASK_0(event_code) BIT(event_code % 32)
@ -5528,6 +5530,159 @@ struct ec_response_regulator_get_voltage {
uint32_t voltage_mv;
} __ec_align4;
/*
* Gather all discovery information for the given port and partner type.
*
* Note that if discovery has not yet completed, only the currently completed
* responses will be filled in. If the discovery data structures are changed
* in the process of the command running, BUSY will be returned.
*
* VDO field sizes are set to the maximum possible number of VDOs a VDM may
* contain, while the number of SVIDs here is selected to fit within the PROTO2
* maximum parameter size.
*/
#define EC_CMD_TYPEC_DISCOVERY 0x0131
enum typec_partner_type {
TYPEC_PARTNER_SOP = 0,
TYPEC_PARTNER_SOP_PRIME = 1,
};
struct ec_params_typec_discovery {
uint8_t port;
uint8_t partner_type; /* enum typec_partner_type */
} __ec_align1;
struct svid_mode_info {
uint16_t svid;
uint16_t mode_count; /* Number of modes partner sent */
uint32_t mode_vdo[6]; /* Max VDOs allowed after VDM header is 6 */
};
struct ec_response_typec_discovery {
uint8_t identity_count; /* Number of identity VDOs partner sent */
uint8_t svid_count; /* Number of SVIDs partner sent */
uint16_t reserved;
uint32_t discovery_vdo[6]; /* Max VDOs allowed after VDM header is 6 */
struct svid_mode_info svids[0];
} __ec_align1;
/*
* Gather all status information for a port.
*
* Note: this covers many of the return fields from the deprecated
* EC_CMD_USB_PD_CONTROL command, except those that are redundant with the
* discovery data. The "enum pd_cc_states" is defined with the deprecated
* EC_CMD_USB_PD_CONTROL command.
*
* This also combines in the EC_CMD_USB_PD_MUX_INFO flags.
*/
#define EC_CMD_TYPEC_STATUS 0x0133
/*
* Power role.
*
* Note this is also used for PD header creation, and values align to those in
* the Power Delivery Specification Revision 3.0 (See
* 6.2.1.1.4 Port Power Role).
*/
enum pd_power_role {
PD_ROLE_SINK = 0,
PD_ROLE_SOURCE = 1
};
/*
* Data role.
*
* Note this is also used for PD header creation, and the first two values
* align to those in the Power Delivery Specification Revision 3.0 (See
* 6.2.1.1.6 Port Data Role).
*/
enum pd_data_role {
PD_ROLE_UFP = 0,
PD_ROLE_DFP = 1,
PD_ROLE_DISCONNECTED = 2,
};
enum pd_vconn_role {
PD_ROLE_VCONN_OFF = 0,
PD_ROLE_VCONN_SRC = 1,
};
/*
* Note: BIT(0) may be used to determine whether the polarity is CC1 or CC2,
* regardless of whether a debug accessory is connected.
*/
enum tcpc_cc_polarity {
/*
* _CCx: is used to indicate the polarity while not connected to
* a Debug Accessory. Only one CC line will assert a resistor and
* the other will be open.
*/
POLARITY_CC1 = 0,
POLARITY_CC2 = 1,
/*
* _CCx_DTS is used to indicate the polarity while connected to a
* SRC Debug Accessory. Assert resistors on both lines.
*/
POLARITY_CC1_DTS = 2,
POLARITY_CC2_DTS = 3,
/*
* The current TCPC code relies on these specific POLARITY values.
* Adding in a check to verify if the list grows for any reason
* that this will give a hint that other places need to be
* adjusted.
*/
POLARITY_COUNT
};
#define PD_STATUS_EVENT_SOP_DISC_DONE BIT(0)
#define PD_STATUS_EVENT_SOP_PRIME_DISC_DONE BIT(1)
struct ec_params_typec_status {
uint8_t port;
} __ec_align1;
struct ec_response_typec_status {
uint8_t pd_enabled; /* PD communication enabled - bool */
uint8_t dev_connected; /* Device connected - bool */
uint8_t sop_connected; /* Device is SOP PD capable - bool */
uint8_t source_cap_count; /* Number of Source Cap PDOs */
uint8_t power_role; /* enum pd_power_role */
uint8_t data_role; /* enum pd_data_role */
uint8_t vconn_role; /* enum pd_vconn_role */
uint8_t sink_cap_count; /* Number of Sink Cap PDOs */
uint8_t polarity; /* enum tcpc_cc_polarity */
uint8_t cc_state; /* enum pd_cc_states */
uint8_t dp_pin; /* DP pin mode (MODE_DP_IN_[A-E]) */
uint8_t mux_state; /* USB_PD_MUX* - encoded mux state */
char tc_state[32]; /* TC state name */
uint32_t events; /* PD_STATUS_EVENT bitmask */
/*
* BCD PD revisions for partners
*
* The format has the PD major reversion in the upper nibble, and PD
* minor version in the next nibble. Following two nibbles are
* currently 0.
* ex. PD 3.2 would map to 0x3200
*
* PD major/minor will be 0 if no PD device is connected.
*/
uint16_t sop_revision;
uint16_t sop_prime_revision;
uint32_t source_cap_pdos[7]; /* Max 7 PDOs can be present */
uint32_t sink_cap_pdos[7]; /* Max 7 PDOs can be present */
} __ec_align1;
/*****************************************************************************/
/* The command range 0x200-0x2FF is reserved for Rotor. */