samsung-sm8650/android_kernel_samsung_sm8650-modules
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NFC: driver: FR63179 Add NFC dynamic protection control

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Implemented NFC dynamic protection control feature in driver; performing
Ven GPIO enable/disable post TZ notifications in non-secure/secure zone
respectively.

Change-Id: I13dedf23987ce0b3b2a53881d35f6c3cf462cd92
This commit is contained in:
Mallikarjun S T
2022-04-09 21:09:35 +05:30
父節點 9214369e79
當前提交 eba3412350
共有 4 個文件被更改，包括 139 次插入 和 25 次删除
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29
nfc/i2c_drv.c
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@@ -375,12 +375,7 @@ int nfc_i2c_dev_probe(struct i2c_client *client, const struct i2c_device_id *id)
nfc_dev->nfc_write = i2c_write;
nfc_dev->nfc_enable_intr = i2c_enable_irq;
nfc_dev->nfc_disable_intr = i2c_disable_irq;
ret = configure_gpio(nfc_gpio->ven, GPIO_OUTPUT);
if (ret) {
pr_err("%s: unable to request nfc reset gpio [%d]\n", __func__,
nfc_gpio->ven);
goto err_free_write_kbuf;
}
ret = configure_gpio(nfc_gpio->irq, GPIO_IRQ);
if (ret <= 0) {
pr_err("%s: unable to request nfc irq gpio [%d]\n", __func__,
@@ -388,11 +383,7 @@ int nfc_i2c_dev_probe(struct i2c_client *client, const struct i2c_device_id *id)
goto err_free_gpio;
}
client->irq = ret;
ret = configure_gpio(nfc_gpio->dwl_req, GPIO_OUTPUT);
if (ret) {
pr_err("%s: unable to request nfc firm downl gpio [%d]\n",
__func__, nfc_gpio->dwl_req);
}
/* init mutex and queues */
init_waitqueue_head(&nfc_dev->read_wq);
mutex_init(&nfc_dev->read_mutex);
@@ -421,20 +412,13 @@ int nfc_i2c_dev_probe(struct i2c_client *client, const struct i2c_device_id *id)
pr_err("LDO config failed\n");
goto err_ldo_config_failed;
}
ret = nfcc_hw_check(nfc_dev);
if (ret || nfc_dev->nfc_state == NFC_STATE_UNKNOWN) {
pr_err("nfc hw check failed ret %d\n", ret);
goto err_nfcc_hw_check;
}
if(nfc_dev->configs.clk_pin_voting)
nfc_dev->clk_run = false;
else
nfc_dev->clk_run = true;
gpio_set_ven(nfc_dev, 1);
gpio_set_ven(nfc_dev, 0);
gpio_set_ven(nfc_dev, 1);
device_init_wakeup(&client->dev, true);
i2c_set_clientdata(client, nfc_dev);
i2c_dev->irq_wake_up = false;
@@ -443,11 +427,7 @@ int nfc_i2c_dev_probe(struct i2c_client *client, const struct i2c_device_id *id)
pr_info("%s: probing nfc i2c successfully\n", __func__);
return 0;
err_nfcc_hw_check:
if (nfc_dev->reg) {
nfc_ldo_unvote(nfc_dev);
regulator_put(nfc_dev->reg);
}
err_ldo_config_failed:
free_irq(client->irq, nfc_dev);
err_nfc_misc_unregister:
@@ -458,7 +438,6 @@ err_mutex_destroy:
mutex_destroy(&nfc_dev->write_mutex);
err_free_gpio:
gpio_free_all(nfc_dev);
err_free_write_kbuf:
kfree(nfc_dev->write_kbuf);
err_free_read_kbuf:
kfree(nfc_dev->read_kbuf);