Merge "NFC: Add recovery mechanism for i2_master_recv error" (6a476355) · Commits · e / devices / android_kernel_fairphone_FP3

drivers/nfc/nq-nci.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -679,6 +679,7 @@ static int nfcc_hw_check(struct i2c_client client, struct nqx_dev nqx_dev)
		{
		int ret = 0;

		int gpio_retry_count = 0;
		unsigned char raw_nci_reset_cmd[] = {0x20, 0x00, 0x01, 0x00};
		unsigned char raw_nci_init_cmd[] = {0x20, 0x01, 0x00};
		unsigned char nci_init_rsp[28];
		@@ -686,6 +687,7 @@ static int nfcc_hw_check(struct i2c_client client, struct nqx_dev nqx_dev)
		unsigned char init_rsp_len = 0;
		unsigned int enable_gpio = nqx_dev->en_gpio;

		reset_enable_gpio:
		/* making sure that the NFCC starts in a clean state. */
		gpio_set_value(enable_gpio, 0);/* ULPM: Disable */
		/* hardware dependent delay */
		@@ -711,6 +713,9 @@ static int nfcc_hw_check(struct i2c_client client, struct nqx_dev nqx_dev)
		if (ret < 0) {
		dev_err(&client->dev,
		"%s: - i2c_master_recv Error\n", __func__);
		gpio_retry_count = gpio_retry_count + 1;
		if (gpio_retry_count < MAX_RETRY_COUNT)
		goto reset_enable_gpio;
		goto err_nfcc_hw_check;
		}
		ret = nqx_standby_write(nqx_dev, raw_nci_init_cmd,