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chrome platform changes for 5.16

Browse source 
cros_ec_typec:
 * Clean up use of cros_ec_check_features
 
 cros_ec_*:
 * Rename and move cros_ec_pd_command to cros_ec_command, and make changes to
   cros_ec_typec and cros_ec_proto to use the new common command, reducing
   duplication.
 
 sensorhub:
 * simplify getting .driver_data in cros_ec_sensors_core and cros_ec_sensorhub
 
 misc:
 * Maintainership change. Enric Balletbo i Serra has moved on from Collabora,
   so removing him from chrome/platform maintainers. Thanks for all of your
   hard work maintaining this, Enric, and best of luck to you in your new role!
 * Add Prashant Malani as driver maintainer for cros_ec_typec.c and
   cros_usbpd_notify. He was already principal contributor of these drivers.
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Merge tag 'tag-chrome-platform-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux

Pull chrome platform updates from Benson Leung:
 "cros_ec_typec:

   - Clean up use of cros_ec_check_features

  cros_ec_*:

   - Rename and move cros_ec_pd_command to cros_ec_command, and make
     changes to cros_ec_typec and cros_ec_proto to use the new common
     command, reducing duplication.

  sensorhub:

   - simplify getting .driver_data in cros_ec_sensors_core and
     cros_ec_sensorhub

  misc:

   - Maintainership change. Enric Balletbo i Serra has moved on from
     Collabora, so removing him from chrome/platform maintainers. Thanks
     for all of your hard work maintaining this, Enric, and best of luck
     to you in your new role!

   - Add Prashant Malani as driver maintainer for cros_ec_typec.c and
     cros_usbpd_notify. He was already principal contributor of these
     drivers"

* tag 'tag-chrome-platform-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux:
  platform/chrome: cros_ec_proto: Use ec_command for check_features
  platform/chrome: cros_ec_proto: Use EC struct for features
  MAINTAINERS: Chrome: Drop Enric Balletbo i Serra
  platform/chrome: cros_ec_typec: Use cros_ec_command()
  platform/chrome: cros_ec_proto: Add version for ec_command
  platform/chrome: cros_ec_proto: Make data pointers void
  platform/chrome: cros_usbpd_notify: Move ec_command()
  platform/chrome: cros_usbpd_notify: Rename cros_ec_pd_command()
  platform/chrome: cros_ec: Fix spelling mistake "responsed" -> "response"
  platform/chrome: cros_ec_sensorhub: simplify getting .driver_data
  iio: common: cros_ec_sensors: simplify getting .driver_data
  platform/chrome: cros-ec-typec: Cleanup use of check_features
  platform/chrome: cros_ec_proto: Fix check_features ret val
  MAINTAINERS: Add Prashant's maintainership of cros_ec drivers
This commit is contained in:
Linus Torvalds 2021-11-10 11:36:43 -08:00
parent 89fa0be0a0 297d34e73d
commit d4efc0de00
9 changed files with 104 additions and 137 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

14
MAINTAINERS
View file

@ -4468,14 +4468,12 @@ F: drivers/input/touchscreen/chipone_icn8505.c
CHROME HARDWARE PLATFORM SUPPORT
M: Benson Leung <bleung@chromium.org>
M: Enric Balletbo i Serra <enric.balletbo@collabora.com>
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux.git
F: drivers/platform/chrome/
CHROMEOS EC CODEC DRIVER
M: Cheng-Yi Chiang <cychiang@chromium.org>
R: Enric Balletbo i Serra <enric.balletbo@collabora.com>
R: Guenter Roeck <groeck@chromium.org>
S: Maintained
F: Documentation/devicetree/bindings/sound/google,cros-ec-codec.yaml
@ -4483,13 +4481,23 @@ F: sound/soc/codecs/cros_ec_codec.*
CHROMEOS EC SUBDRIVERS
M: Benson Leung <bleung@chromium.org>
M: Enric Balletbo i Serra <enric.balletbo@collabora.com>
R: Guenter Roeck <groeck@chromium.org>
S: Maintained
F: drivers/power/supply/cros_usbpd-charger.c
N: cros_ec
N: cros-ec
CHROMEOS EC USB TYPE-C DRIVER
M: Prashant Malani <pmalani@chromium.org>
S: Maintained
F: drivers/platform/chrome/cros_ec_typec.c
CHROMEOS EC USB PD NOTIFY DRIVER
M: Prashant Malani <pmalani@chromium.org>
S: Maintained
F: drivers/platform/chrome/cros_usbpd_notify.c
F: include/linux/platform_data/cros_usbpd_notify.h
CHRONTEL CH7322 CEC DRIVER
M: Joe Tessler <jrt@google.com>
L: linux-media@vger.kernel.org

3
drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
View file

@ -831,8 +831,7 @@ EXPORT_SYMBOL_GPL(cros_ec_sensors_core_write);
static int __maybe_unused cros_ec_sensors_resume(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct iio_dev *indio_dev = platform_get_drvdata(pdev);
struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct cros_ec_sensors_core_state *st = iio_priv(indio_dev);
int ret = 0;

4
drivers/mfd/cros_ec_dev.c
View file

@ -146,8 +146,8 @@ static int ec_device_probe(struct platform_device *pdev)
ec->ec_dev = dev_get_drvdata(dev->parent);
ec->dev = dev;
ec->cmd_offset = ec_platform->cmd_offset;
ec->features[0] = -1U; /* Not cached yet */
ec->features[1] = -1U; /* Not cached yet */
ec->features.flags[0] = -1U; /* Not cached yet */
ec->features.flags[1] = -1U; /* Not cached yet */
device_initialize(&ec->class_dev);
for (i = 0; i < ARRAY_SIZE(cros_mcu_devices); i++) {

4
drivers/platform/chrome/cros_ec_lpc.c
View file

@ -156,7 +156,7 @@ static int cros_ec_pkt_xfer_lpc(struct cros_ec_device *ec,
cros_ec_lpc_ops.write(EC_LPC_ADDR_HOST_CMD, 1, &sum);
if (ec_response_timed_out()) {
dev_warn(ec->dev, "EC responsed timed out\n");
dev_warn(ec->dev, "EC response timed out\n");
ret = -EIO;
goto done;
}
@ -238,7 +238,7 @@ static int cros_ec_cmd_xfer_lpc(struct cros_ec_device *ec,
cros_ec_lpc_ops.write(EC_LPC_ADDR_HOST_CMD, 1, &sum);
if (ec_response_timed_out()) {
dev_warn(ec->dev, "EC responsed timed out\n");
dev_warn(ec->dev, "EC response timed out\n");
ret = -EIO;
goto done;
}

79
drivers/platform/chrome/cros_ec_proto.c
View file

@ -808,38 +808,27 @@ EXPORT_SYMBOL(cros_ec_get_host_event);
*
* Call this function to test whether the ChromeOS EC supports a feature.
*
* Return: 1 if supported, 0 if not
* Return: true if supported, false if not (or if an error was encountered).
*/
int cros_ec_check_features(struct cros_ec_dev *ec, int feature)
bool cros_ec_check_features(struct cros_ec_dev *ec, int feature)
{
struct cros_ec_command *msg;
struct ec_response_get_features *features = &ec->features;
int ret;
if (ec->features[0] == -1U && ec->features[1] == -1U) {
if (features->flags[0] == -1U && features->flags[1] == -1U) {
/* features bitmap not read yet */
msg = kzalloc(sizeof(*msg) + sizeof(ec->features), GFP_KERNEL);
if (!msg)
return -ENOMEM;
msg->command = EC_CMD_GET_FEATURES + ec->cmd_offset;
msg->insize = sizeof(ec->features);
ret = cros_ec_cmd_xfer_status(ec->ec_dev, msg);
ret = cros_ec_command(ec->ec_dev, 0, EC_CMD_GET_FEATURES + ec->cmd_offset,
NULL, 0, features, sizeof(*features));
if (ret < 0) {
dev_warn(ec->dev, "cannot get EC features: %d/%d\n",
ret, msg->result);
memset(ec->features, 0, sizeof(ec->features));
} else {
memcpy(ec->features, msg->data, sizeof(ec->features));
dev_warn(ec->dev, "cannot get EC features: %d\n", ret);
memset(features, 0, sizeof(*features));
}
dev_dbg(ec->dev, "EC features %08x %08x\n",
ec->features[0], ec->features[1]);
kfree(msg);
features->flags[0], features->flags[1]);
}
return ec->features[feature / 32] & EC_FEATURE_MASK_0(feature);
return !!(features->flags[feature / 32] & EC_FEATURE_MASK_0(feature));
}
EXPORT_SYMBOL_GPL(cros_ec_check_features);
@ -908,3 +897,51 @@ int cros_ec_get_sensor_count(struct cros_ec_dev *ec)
return sensor_count;
}
EXPORT_SYMBOL_GPL(cros_ec_get_sensor_count);
/**
* cros_ec_command - Send a command to the EC.
*
* @ec_dev: EC device
* @version: EC command version
* @command: EC command
* @outdata: EC command output data
* @outsize: Size of outdata
* @indata: EC command input data
* @insize: Size of indata
*
* Return: >= 0 on success, negative error number on failure.
*/
int cros_ec_command(struct cros_ec_device *ec_dev,
unsigned int version,
int command,
void *outdata,
int outsize,
void *indata,
int insize)
{
struct cros_ec_command *msg;
int ret;
msg = kzalloc(sizeof(*msg) + max(insize, outsize), GFP_KERNEL);
if (!msg)
return -ENOMEM;
msg->version = version;
msg->command = command;
msg->outsize = outsize;
msg->insize = insize;
if (outsize)
memcpy(msg->data, outdata, outsize);
ret = cros_ec_cmd_xfer_status(ec_dev, msg);
if (ret < 0)
goto error;
if (insize)
memcpy(indata, msg->data, insize);
error:
kfree(msg);
return ret;
}
EXPORT_SYMBOL_GPL(cros_ec_command);

6
drivers/platform/chrome/cros_ec_sensorhub.c
View file

@ -224,8 +224,7 @@ static int cros_ec_sensorhub_probe(struct platform_device *pdev)
*/
static int cros_ec_sensorhub_suspend(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct cros_ec_sensorhub *sensorhub = platform_get_drvdata(pdev);
struct cros_ec_sensorhub *sensorhub = dev_get_drvdata(dev);
struct cros_ec_dev *ec = sensorhub->ec;
if (cros_ec_check_features(ec, EC_FEATURE_MOTION_SENSE_FIFO))
@ -235,8 +234,7 @@ static int cros_ec_sensorhub_suspend(struct device *dev)
static int cros_ec_sensorhub_resume(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct cros_ec_sensorhub *sensorhub = platform_get_drvdata(pdev);
struct cros_ec_sensorhub *sensorhub = dev_get_drvdata(dev);
struct cros_ec_dev *ec = sensorhub->ec;
if (cros_ec_check_features(ec, EC_FEATURE_MOTION_SENSE_FIFO))

74
drivers/platform/chrome/cros_ec_typec.c
View file

@ -379,37 +379,6 @@ static int cros_typec_init_ports(struct cros_typec_data *typec)
return ret;
}
static int cros_typec_ec_command(struct cros_typec_data *typec,
unsigned int version,
unsigned int command,
void *outdata,
unsigned int outsize,
void *indata,
unsigned int insize)
{
struct cros_ec_command *msg;
int ret;
msg = kzalloc(sizeof(*msg) + max(outsize, insize), GFP_KERNEL);
if (!msg)
return -ENOMEM;
msg->version = version;
msg->command = command;
msg->outsize = outsize;
msg->insize = insize;
if (outsize)
memcpy(msg->data, outdata, outsize);
ret = cros_ec_cmd_xfer_status(typec->ec, msg);
if (ret >= 0 && insize)
memcpy(indata, msg->data, insize);
kfree(msg);
return ret;
}
static int cros_typec_usb_safe_state(struct cros_typec_port *port)
{
port->state.mode = TYPEC_STATE_SAFE;
@ -596,8 +565,8 @@ static int cros_typec_configure_mux(struct cros_typec_data *typec, int port_num,
/* Sending Acknowledgment to EC */
mux_ack.port = port_num;
if (cros_typec_ec_command(typec, 0, EC_CMD_USB_PD_MUX_ACK, &mux_ack,
sizeof(mux_ack), NULL, 0) < 0)
if (cros_ec_command(typec->ec, 0, EC_CMD_USB_PD_MUX_ACK, &mux_ack,
sizeof(mux_ack), NULL, 0) < 0)
dev_warn(typec->dev,
"Failed to send Mux ACK to EC for port: %d\n",
port_num);
@ -668,8 +637,8 @@ static int cros_typec_get_mux_info(struct cros_typec_data *typec, int port_num,
.port = port_num,
};
return cros_typec_ec_command(typec, 0, EC_CMD_USB_PD_MUX_INFO, &req,
sizeof(req), resp, sizeof(*resp));
return cros_ec_command(typec->ec, 0, EC_CMD_USB_PD_MUX_INFO, &req,
sizeof(req), resp, sizeof(*resp));
}
/*
@ -776,8 +745,8 @@ static int cros_typec_handle_sop_prime_disc(struct cros_typec_data *typec, int p
int ret = 0;
memset(disc, 0, EC_PROTO2_MAX_RESPONSE_SIZE);
ret = cros_typec_ec_command(typec, 0, EC_CMD_TYPEC_DISCOVERY, &req, sizeof(req),
disc, EC_PROTO2_MAX_RESPONSE_SIZE);
ret = cros_ec_command(typec->ec, 0, EC_CMD_TYPEC_DISCOVERY, &req, sizeof(req),
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 sop_prime_disc_exit;
@ -859,8 +828,8 @@ static int cros_typec_handle_sop_disc(struct cros_typec_data *typec, int port_nu
typec_partner_set_pd_revision(port->partner, pd_revision);
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);
ret = cros_ec_command(typec->ec, 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;
@ -892,8 +861,8 @@ static int cros_typec_send_clear_event(struct cros_typec_data *typec, int port_n
.clear_events_mask = events_mask,
};
return cros_typec_ec_command(typec, 0, EC_CMD_TYPEC_CONTROL, &req,
sizeof(req), NULL, 0);
return cros_ec_command(typec->ec, 0, EC_CMD_TYPEC_CONTROL, &req,
sizeof(req), NULL, 0);
}
static void cros_typec_handle_status(struct cros_typec_data *typec, int port_num)
@ -904,8 +873,8 @@ static void cros_typec_handle_status(struct cros_typec_data *typec, int port_num
};
int ret;
ret = cros_typec_ec_command(typec, 0, EC_CMD_TYPEC_STATUS, &req, sizeof(req),
&resp, sizeof(resp));
ret = cros_ec_command(typec->ec, 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;
@ -983,9 +952,9 @@ static int cros_typec_port_update(struct cros_typec_data *typec, int port_num)
req.mux = USB_PD_CTRL_MUX_NO_CHANGE;
req.swap = USB_PD_CTRL_SWAP_NONE;
ret = cros_typec_ec_command(typec, typec->pd_ctrl_ver,
EC_CMD_USB_PD_CONTROL, &req, sizeof(req),
&resp, sizeof(resp));
ret = cros_ec_command(typec->ec, typec->pd_ctrl_ver,
EC_CMD_USB_PD_CONTROL, &req, sizeof(req),
&resp, sizeof(resp));
if (ret < 0)
return ret;
@ -1035,8 +1004,8 @@ static int cros_typec_get_cmd_version(struct cros_typec_data *typec)
/* We're interested in the PD control command version. */
req_v1.cmd = EC_CMD_USB_PD_CONTROL;
ret = cros_typec_ec_command(typec, 1, EC_CMD_GET_CMD_VERSIONS,
&req_v1, sizeof(req_v1), &resp,
ret = cros_ec_command(typec->ec, 1, EC_CMD_GET_CMD_VERSIONS,
&req_v1, sizeof(req_v1), &resp,
sizeof(resp));
if (ret < 0)
return ret;
@ -1116,12 +1085,11 @@ static int cros_typec_probe(struct platform_device *pdev)
}
ec_dev = dev_get_drvdata(&typec->ec->ec->dev);
typec->typec_cmd_supported = !!cros_ec_check_features(ec_dev, EC_FEATURE_TYPEC_CMD);
typec->needs_mux_ack = !!cros_ec_check_features(ec_dev,
EC_FEATURE_TYPEC_MUX_REQUIRE_AP_ACK);
typec->typec_cmd_supported = cros_ec_check_features(ec_dev, EC_FEATURE_TYPEC_CMD);
typec->needs_mux_ack = cros_ec_check_features(ec_dev, EC_FEATURE_TYPEC_MUX_REQUIRE_AP_ACK);
ret = cros_typec_ec_command(typec, 0, EC_CMD_USB_PD_PORTS, NULL, 0,
&resp, sizeof(resp));
ret = cros_ec_command(typec->ec, 0, EC_CMD_USB_PD_PORTS, NULL, 0,
&resp, sizeof(resp));
if (ret < 0)
return ret;

50
drivers/platform/chrome/cros_usbpd_notify.c
View file

@ -53,50 +53,6 @@ void cros_usbpd_unregister_notify(struct notifier_block *nb)
}
EXPORT_SYMBOL_GPL(cros_usbpd_unregister_notify);
/**
* cros_ec_pd_command - Send a command to the EC.
*
* @ec_dev: EC device
* @command: EC command
* @outdata: EC command output data
* @outsize: Size of outdata
* @indata: EC command input data
* @insize: Size of indata
*
* Return: >= 0 on success, negative error number on failure.
*/
static int cros_ec_pd_command(struct cros_ec_device *ec_dev,
int command,
uint8_t *outdata,
int outsize,
uint8_t *indata,
int insize)
{
struct cros_ec_command *msg;
int ret;
msg = kzalloc(sizeof(*msg) + max(insize, outsize), GFP_KERNEL);
if (!msg)
return -ENOMEM;
msg->command = command;
msg->outsize = outsize;
msg->insize = insize;
if (outsize)
memcpy(msg->data, outdata, outsize);
ret = cros_ec_cmd_xfer_status(ec_dev, msg);
if (ret < 0)
goto error;
if (insize)
memcpy(indata, msg->data, insize);
error:
kfree(msg);
return ret;
}
static void cros_usbpd_get_event_and_notify(struct device *dev,
struct cros_ec_device *ec_dev)
{
@ -115,10 +71,8 @@ static void cros_usbpd_get_event_and_notify(struct device *dev,
}
/* Check for PD host events on EC. */
ret = cros_ec_pd_command(ec_dev, EC_CMD_PD_HOST_EVENT_STATUS,
NULL, 0,
(uint8_t *)&host_event_status,
sizeof(host_event_status));
ret = cros_ec_command(ec_dev, 0, EC_CMD_PD_HOST_EVENT_STATUS,
NULL, 0, &host_event_status, sizeof(host_event_status));
if (ret < 0) {
dev_warn(dev, "Can't get host event status (err: %d)\n", ret);
goto send_notify;

7
include/linux/platform_data/cros_ec_proto.h
View file

@ -205,7 +205,7 @@ struct cros_ec_dev {
struct cros_ec_debugfs *debug_info;
bool has_kb_wake_angle;
u16 cmd_offset;
u32 features[2];
struct ec_response_get_features features;
};
#define to_cros_ec_dev(dev) container_of(dev, struct cros_ec_dev, class_dev)
@ -227,10 +227,13 @@ int cros_ec_get_next_event(struct cros_ec_device *ec_dev,
u32 cros_ec_get_host_event(struct cros_ec_device *ec_dev);
int cros_ec_check_features(struct cros_ec_dev *ec, int feature);
bool cros_ec_check_features(struct cros_ec_dev *ec, int feature);
int cros_ec_get_sensor_count(struct cros_ec_dev *ec);
int cros_ec_command(struct cros_ec_device *ec_dev, unsigned int version, int command, void *outdata,
int outsize, void *indata, int insize);
/**
* cros_ec_get_time_ns() - Return time in ns.
*