static int cros_ec_rtc_get(struct cros_ec_device *cros_ec, u32 command,
u32 *response)
{
int ret;
struct {
struct cros_ec_command msg;
struct ec_response_rtc data;
} __packed msg;
memset(&msg, 0, sizeof(msg));
msg.msg.command = command;
msg.msg.insize = sizeof(msg.data);
ret = cros_ec_cmd_xfer_status(cros_ec, &msg.msg);
if (ret < 0) {
dev_err(cros_ec->dev,
"error getting %s from EC: %d\n",
command == EC_CMD_RTC_GET_VALUE ? "time" : "alarm",
ret);
return ret;
}
*response = msg.data.time;
return 0;
}
static int cros_ec_cec_adap_enable(struct cec_adapter *adap, bool enable)
{
struct cros_ec_cec *cros_ec_cec = adap->priv;
struct cros_ec_device *cros_ec = cros_ec_cec->cros_ec;
struct {
struct cros_ec_command msg;
struct ec_params_cec_set data;
} __packed msg = {};
int ret;
msg.msg.command = EC_CMD_CEC_SET;
msg.msg.outsize = sizeof(msg.data);
msg.data.cmd = CEC_CMD_ENABLE;
msg.data.val = enable;
ret = cros_ec_cmd_xfer_status(cros_ec, &msg.msg);
if (ret < 0) {
dev_err(cros_ec->dev,
"error %sabling CEC on EC: %d\n",
(enable ? "en" : "dis"), ret);
return ret;
}
return 0;
}
static struct ec_response_pd_log *ec_get_log_entry(struct logger_data *logger)
{
struct cros_ec_dev *ec_dev = logger->ec_dev;
struct cros_ec_command *msg;
int ret;
msg = (struct cros_ec_command *)logger->ec_buffer;
msg->command = ec_dev->cmd_offset + EC_CMD_PD_GET_LOG_ENTRY;
msg->insize = CROS_USBPD_LOG_RESP_SIZE;
ret = cros_ec_cmd_xfer_status(ec_dev->ec_dev, msg);
if (ret < 0)
return ERR_PTR(ret);
return (struct ec_response_pd_log *)msg->data;
}
int cros_ec_motion_send_host_cmd(struct cros_ec_sensors_core_state *state,
u16 opt_length)
{
int ret;
if (opt_length)
state->msg->insize = min(opt_length, state->ec->max_response);
else
state->msg->insize = state->ec->max_response;
memcpy(state->msg->data, &state->param, sizeof(state->param));
ret = cros_ec_cmd_xfer_status(state->ec, state->msg);
if (ret < 0)
return -EIO;
if (ret &&
state->resp != (struct ec_response_motion_sense *)state->msg->data)
memcpy(state->resp, state->msg->data, ret);
return 0;
}
static int cros_ec_rtc_set(struct cros_ec_device *cros_ec, u32 command,
u32 param)
{
int ret = 0;
struct {
struct cros_ec_command msg;
struct ec_response_rtc data;
} __packed msg;
memset(&msg, 0, sizeof(msg));
msg.msg.command = command;
msg.msg.outsize = sizeof(msg.data);
msg.data.time = param;
ret = cros_ec_cmd_xfer_status(cros_ec, &msg.msg);
if (ret < 0) {
dev_err(cros_ec->dev, "error setting %s on EC: %d\n",
command == EC_CMD_RTC_SET_VALUE ? "time" : "alarm",
ret);
return ret;
}
return 0;
}
static int cros_ec_cec_set_log_addr(struct cec_adapter *adap, u8 logical_addr)
{
struct cros_ec_cec *cros_ec_cec = adap->priv;
struct cros_ec_device *cros_ec = cros_ec_cec->cros_ec;
struct {
struct cros_ec_command msg;
struct ec_params_cec_set data;
} __packed msg = {};
int ret;
msg.msg.command = EC_CMD_CEC_SET;
msg.msg.outsize = sizeof(msg.data);
msg.data.cmd = CEC_CMD_LOGICAL_ADDRESS;
msg.data.val = logical_addr;
ret = cros_ec_cmd_xfer_status(cros_ec, &msg.msg);
if (ret < 0) {
dev_err(cros_ec->dev,
"error setting CEC logical address on EC: %d\n", ret);
return ret;
}
return 0;
}
static int cros_ec_cec_transmit(struct cec_adapter *adap, u8 attempts,
u32 signal_free_time, struct cec_msg *cec_msg)
{
struct cros_ec_cec *cros_ec_cec = adap->priv;
struct cros_ec_device *cros_ec = cros_ec_cec->cros_ec;
struct {
struct cros_ec_command msg;
struct ec_params_cec_write data;
} __packed msg = {};
int ret;
msg.msg.command = EC_CMD_CEC_WRITE_MSG;
msg.msg.outsize = cec_msg->len;
memcpy(msg.data.msg, cec_msg->msg, cec_msg->len);
ret = cros_ec_cmd_xfer_status(cros_ec, &msg.msg);
if (ret < 0) {
dev_err(cros_ec->dev,
"error writing CEC msg on EC: %d\n", ret);
return ret;
}
return 0;
}
static int cros_ec_keyb_get_state(struct cros_ec_keyb *ckdev, uint8_t *kb_state)
{
int ret;
struct cros_ec_command msg = {
.version = 0,
.command = EC_CMD_MKBP_STATE,
.outdata = NULL,
.outsize = 0,
.indata = kb_state,
.insize = ckdev->cols,
};
ret = cros_ec_cmd_xfer_status(ckdev->ec, &msg);
return ret;
}
static irqreturn_t cros_ec_keyb_irq(int irq, void *data)
{
struct cros_ec_keyb *ckdev = data;
struct cros_ec_device *ec = ckdev->ec;
int ret;
uint8_t kb_state[ckdev->cols];
if (device_may_wakeup(ec->dev))
pm_wakeup_event(ec->dev, 0);
ret = cros_ec_keyb_get_state(ckdev, kb_state);
if (ret >= 0)
cros_ec_keyb_process(ckdev, kb_state, ret);
else
dev_err(ec->dev, "failed to get keyboard state: %d\n", ret);
return IRQ_HANDLED;
}
static int cros_ec_keyb_open(struct input_dev *dev)
{
struct cros_ec_keyb *ckdev = input_get_drvdata(dev);
struct cros_ec_device *ec = ckdev->ec;
return request_threaded_irq(ec->irq, NULL, cros_ec_keyb_irq,
IRQF_TRIGGER_LOW | IRQF_ONESHOT,
"cros_ec_keyb", ckdev);
}
static void cros_ec_keyb_close(struct input_dev *dev)
{
struct cros_ec_keyb *ckdev = input_get_drvdata(dev);
struct cros_ec_device *ec = ckdev->ec;
free_irq(ec->irq, ckdev);
}
static int cros_ec_keyb_probe(struct platform_device *pdev)
{
struct cros_ec_device *ec = dev_get_drvdata(pdev->dev.parent);
struct device *dev = ec->dev;
struct cros_ec_keyb *ckdev;
struct input_dev *idev;
struct device_node *np;
int err;
np = pdev->dev.of_node;
if (!np)
return -ENODEV;
ckdev = devm_kzalloc(&pdev->dev, sizeof(*ckdev), GFP_KERNEL);
if (!ckdev)
return -ENOMEM;
err = matrix_keypad_parse_of_params(&pdev->dev, &ckdev->rows,
&ckdev->cols);
if (err)
return err;
ckdev->old_kb_state = devm_kzalloc(&pdev->dev, ckdev->cols, GFP_KERNEL);
if (!ckdev->old_kb_state)
return -ENOMEM;
idev = devm_input_allocate_device(&pdev->dev);
if (!idev)
return -ENOMEM;
if (!ec->irq) {
dev_err(dev, "no EC IRQ specified\n");
return -EINVAL;
}
ckdev->ec = ec;
ckdev->dev = dev;
dev_set_drvdata(&pdev->dev, ckdev);
idev->name = CROS_EC_DEV_NAME;
idev->phys = ec->phys_name;
__set_bit(EV_REP, idev->evbit);
idev->id.bustype = BUS_VIRTUAL;
idev->id.version = 1;
idev->id.product = 0;
idev->dev.parent = &pdev->dev;
idev->open = cros_ec_keyb_open;
idev->close = cros_ec_keyb_close;
ckdev->ghost_filter = of_property_read_bool(np,
"google,needs-ghost-filter");
err = matrix_keypad_build_keymap(NULL, NULL, ckdev->rows, ckdev->cols,
NULL, idev);
if (err) {
dev_err(dev, "cannot build key matrix\n");
return err;
}
ckdev->row_shift = get_count_order(ckdev->cols);
input_set_capability(idev, EV_MSC, MSC_SCAN);
input_set_drvdata(idev, ckdev);
ckdev->idev = idev;
err = input_register_device(ckdev->idev);
if (err) {
dev_err(dev, "cannot register input device\n");
return err;
}
return 0;
}
#ifdef CONFIG_PM_SLEEP
/* Clear any keys in the buffer */
static void cros_ec_keyb_clear_keyboard(struct cros_ec_keyb *ckdev)
{
uint8_t old_state[ckdev->cols];
uint8_t new_state[ckdev->cols];
unsigned long duration;
int i, ret;
/*
* Keep reading until we see that the scan state does not change.
* That indicates that we are done.
*
* Assume that the EC keyscan buffer is at most 32 deep.
*/
duration = jiffies;
ret = cros_ec_keyb_get_state(ckdev, new_state);
for (i = 1; !ret && i < 32; i++) {
memcpy(old_state, new_state, sizeof(old_state));
ret = cros_ec_keyb_get_state(ckdev, new_state);
if (0 == memcmp(old_state, new_state, sizeof(old_state)))
break;
}
duration = jiffies - duration;
dev_info(ckdev->dev, "Discarded %d keyscan(s) in %dus\n", i,
jiffies_to_usecs(duration));
}
