static void cptk_update_firmware_cb(const struct firmware *fw, void *context)
{
int ret;
struct cptk_data *cptk = context;
struct device *dev = &cptk->input_dev->dev;
int retries = 3;
pr_info("cptk: firware download start\n");
if (fw->size != FW_SIZE) {
dev_err(dev, "%s: Firmware file size invalid size:%d\n",
__func__, fw->size);
return;
}
mutex_lock(&cptk->lock);
disable_irq(cptk->client->irq);
/* Lock the i2c bus since the firmware updater accesses it */
i2c_lock_adapter(cptk->client->adapter);
while (retries--) {
ret = touchkey_flash_firmware(cptk->pdata, fw->data);
if (!ret)
break;
}
if (ret) {
cptk->touchkey_update_status = -1;
dev_err(dev, "%s: Firmware update failed\n", __func__);
} else {
cptk->touchkey_update_status = 0;
pr_info("cptk: firware download finished\n");
}
i2c_unlock_adapter(cptk->client->adapter);
enable_irq(cptk->client->irq);
release_firmware(fw);
mutex_unlock(&cptk->lock);
cptk_i2c_read(cptk, KEYCODE_REG, cptk->cur_firm_ver,
sizeof(cptk->cur_firm_ver));
pr_info("cptk: current firm ver = 0x%.2x, latest firm ver = 0x%.2x\n",
cptk->cur_firm_ver[1], cptk->pdata->firm_ver);
return;
}
static int update_firmware(struct cypress_touchkey_devdata *devdata)
{
int ret;
const struct firmware *fw = NULL;
struct device *dev = &devdata->input_dev->dev;
int retries = 10;
dev_info(dev, "%s: Updating " DEVICE_NAME " firmware\n", __func__);
if (!devdata->pdata->fw_name) {
dev_err(dev, "%s: Device firmware name is not set\n", __func__);
return -EINVAL;
}
ret = request_firmware(&fw, devdata->pdata->fw_name, dev);
if (ret) {
dev_err(dev, "%s: Can't open firmware file from %s\n", __func__,
devdata->pdata->fw_name);
return ret;
}
if (fw->size != FW_SIZE) {
dev_err(dev, "%s: Firmware file size invalid\n", __func__);
return -EINVAL;
}
disable_irq(devdata->client->irq);
/* Lock the i2c bus since the firmware updater accesses it */
i2c_lock_adapter(devdata->client->adapter);
while (retries--) {
ret = touchkey_flash_firmware(devdata->pdata, fw->data);
if (!ret)
break;
}
if (ret)
dev_err(dev, "%s: Firmware update failed\n", __func__);
i2c_unlock_adapter(devdata->client->adapter);
enable_irq(devdata->client->irq);
release_firmware(fw);
return ret;
}
