i2c: qup: make use of the new infrastructure for quirks

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Tested-by: Ivan T. Ivanov <iivanov@mm-sol.com>

1 files changed, 10 insertions, 11 deletions

diff --git a/drivers/i2c/busses/i2c-qup.c b/drivers/i2c/busses/i2c-qup.c
index 4dad23bdffbe..fdcbdab808e9 100644
--- a/drivers/i2c/busses/i2c-qup.c
+++ b/drivers/i2c/busses/i2c-qup.c
@@ -412,17 +412,6 @@ static int qup_i2c_read_one(struct qup_i2c_dev *qup, struct i2c_msg *msg)
         unsigned long left;
         int ret;
 
-        /*
-         * The QUP block will issue a NACK and STOP on the bus when reaching
-         * the end of the read, the length of the read is specified as one byte
-         * which limits the possible read to 256 (QUP_READ_LIMIT) bytes.
-         */
-        if (msg->len > QUP_READ_LIMIT) {
-                dev_err(qup->dev, "HW not capable of reads over %d bytes\n",
-                        QUP_READ_LIMIT);
-                return -EINVAL;
-        }
-
         qup->msg = msg;
         qup->pos  = 0;
 
@@ -534,6 +523,15 @@ static const struct i2c_algorithm qup_i2c_algo = {
         .functionality  = qup_i2c_func,
 };
 
+/*
+ * The QUP block will issue a NACK and STOP on the bus when reaching
+ * the end of the read, the length of the read is specified as one byte
+ * which limits the possible read to 256 (QUP_READ_LIMIT) bytes.
+ */
+static struct i2c_adapter_quirks qup_i2c_quirks = {
+        .max_read_len = QUP_READ_LIMIT,
+};
+
 static void qup_i2c_enable_clocks(struct qup_i2c_dev *qup)
 {
         clk_prepare_enable(qup->clk);
@@ -670,6 +668,7 @@ static int qup_i2c_probe(struct platform_device *pdev)
 
         i2c_set_adapdata(&qup->adap, qup);
         qup->adap.algo = &qup_i2c_algo;
+        qup->adap.quirks = &qup_i2c_quirks;
         qup->adap.dev.parent = qup->dev;
         qup->adap.dev.of_node = pdev->dev.of_node;
         strlcpy(qup->adap.name, "QUP I2C adapter", sizeof(qup->adap.name));