diff options
Diffstat (limited to 'drivers/misc/c55_ctrl.c')
| -rw-r--r-- | drivers/misc/c55_ctrl.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/drivers/misc/c55_ctrl.c b/drivers/misc/c55_ctrl.c index 507732514cb..ab934a94dff 100644 --- a/drivers/misc/c55_ctrl.c +++ b/drivers/misc/c55_ctrl.c @@ -42,6 +42,7 @@ struct c55_ctrl_data { struct pinctrl_state *states[C55_MODE_MAX]; int c55_mode; struct mutex ctrl_mutex; /* mutex to handle critical area */ + int fw_verified; }; const char *c55_pin_state_labels[C55_MODE_MAX] = { @@ -216,6 +217,38 @@ static ssize_t c55_ctrl_enable(struct device *dev, static DEVICE_ATTR(enable, S_IWUSR | S_IWGRP, NULL, c55_ctrl_enable); +static ssize_t c55_fw_verified_write(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct c55_ctrl_data *cdata = dev_get_drvdata(dev); + int verified = 0; + + if (kstrtoint(buf, 10, &verified) < 0) + return -EINVAL; + + mutex_lock(&cdata->ctrl_mutex); + cdata->fw_verified = verified; + mutex_unlock(&cdata->ctrl_mutex); + + return count; +} + +static ssize_t c55_fw_verified_read(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct c55_ctrl_data *cdata = dev_get_drvdata(dev); + int ret; + + mutex_lock(&cdata->ctrl_mutex); + ret = sprintf(buf, "%d\n", cdata->fw_verified); + mutex_unlock(&cdata->ctrl_mutex); + + return ret; +} + +static DEVICE_ATTR(fw_verified, S_IRUSR | S_IRGRP | S_IWUSR | S_IWGRP, + c55_fw_verified_read, c55_fw_verified_write); + static int c55_ctrl_pin_setup(struct device *dev, struct c55_ctrl_data *cdata) { int i, ret = 0; @@ -303,6 +336,15 @@ static int c55_ctrl_probe(struct platform_device *pdev) return ret; } + cdata->fw_verified = 0; + + ret = device_create_file(&pdev->dev, &dev_attr_fw_verified); + if (ret) { + dev_err(&pdev->dev, "%s: c55_ctrl creating fw_verified failed.\n", + __func__); + return ret; + } + wake_lock_init(&cdata->wake_lock, WAKE_LOCK_SUSPEND, "c55_ctrl"); platform_set_drvdata(pdev, cdata); |