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Message-Id: <1420824103-24169-6-git-send-email-wsa@the-dreams.de>
Date: Fri, 9 Jan 2015 18:21:35 +0100
From: Wolfram Sang <wsa@...-dreams.de>
To: linux-i2c@...r.kernel.org
Cc: linux-arm-kernel@...ts.infradead.org,
linuxppc-dev@...ts.ozlabs.org, linux-mips@...ux-mips.org,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
Ludovic Desroches <ludovic.desroches@...el.com>,
Yingjoe Chen <yingjoe.chen@...iatek.com>,
Wolfram Sang <wsa@...-dreams.de>, linux-kernel@...r.kernel.org
Subject: [RFC 05/11] i2c: qup: make use of the new infrastructure for quirks
Signed-off-by: Wolfram Sang <wsa@...-dreams.de>
---
drivers/i2c/busses/i2c-qup.c | 21 ++++++++++-----------
1 file 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));
--
2.1.3
--
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