From: Dmitry Osipenko <digetx@gmail.com>
To: digetx@gmail.com, Wolfram Sang <wsa@the-dreams.de>,
Stephen Warren <swarren@wwwdotorg.org>,
Thierry Reding <thierry.reding@gmail.com>,
Alexandre Courbot <gnurou@gmail.com>,
Laxman Dewangan <ldewangan@nvidia.com>
Cc: Ben Dooks <ben.dooks@codethink.co.uk>,
Bob Mottram <bob.mottram@codethink.co.uk>,
linux-tegra@vger.kernel.org, linux-i2c@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH 1/2] i2c: tegra: Maintain CPU endianness
Date: Tue, 20 Jan 2015 15:22:25 +0300 [thread overview]
Message-ID: <1421756555-20266-1-git-send-email-digetx@gmail.com> (raw)
Support CPU BE mode by adding endianness conversion for memcpy interactions.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
drivers/i2c/busses/i2c-tegra.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
index 28b87e6..e0d3ef1 100644
--- a/drivers/i2c/busses/i2c-tegra.c
+++ b/drivers/i2c/busses/i2c-tegra.c
@@ -286,6 +286,7 @@ static int tegra_i2c_empty_rx_fifo(struct tegra_i2c_dev *i2c_dev)
if (rx_fifo_avail > 0 && buf_remaining > 0) {
BUG_ON(buf_remaining > 3);
val = i2c_readl(i2c_dev, I2C_RX_FIFO);
+ val = cpu_to_le32(val);
memcpy(buf, &val, buf_remaining);
buf_remaining = 0;
rx_fifo_avail--;
@@ -343,7 +344,9 @@ static int tegra_i2c_fill_tx_fifo(struct tegra_i2c_dev *i2c_dev)
*/
if (tx_fifo_avail > 0 && buf_remaining > 0) {
BUG_ON(buf_remaining > 3);
+ val = 0;
memcpy(&val, buf, buf_remaining);
+ val = cpu_to_le32(val);
/* Again update before writing to FIFO to make sure isr sees. */
i2c_dev->msg_buf_remaining = 0;
--
2.2.1
next reply other threads:[~2015-01-20 12:22 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-20 12:22 Dmitry Osipenko [this message]
[not found] ` <1421756555-20266-1-git-send-email-digetx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-01-22 7:40 ` [PATCH 1/2] i2c: tegra: Maintain CPU endianness Thierry Reding
2015-01-22 7:55 ` Alexandre Courbot
[not found] ` <CAAVeFuJHST9VOWXe_cZNvLmfGdamuU4HSgdZC6EoQvrsGFt+Fg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-01-22 15:22 ` Dmitry Osipenko
[not found] ` <54C115D1.10206-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-01-22 16:06 ` Dmitry Osipenko
[not found] ` <54C12010.8040504-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-01-22 17:18 ` Dmitry Osipenko
[not found] ` <54C130EA.2050505-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-01-23 9:45 ` Thierry Reding
2015-01-23 13:27 ` Dmitry Osipenko
[not found] ` <54C24C2B.1070907-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-01-23 14:52 ` Dmitry Osipenko
[not found] ` <54C2601A.7000005-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-01-26 16:03 ` Wolfram Sang
2015-01-26 16:11 ` Dmitry Osipenko
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