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imx6: drop upstream rejected patch 

http://article.gmane.org/gmane.linux.drivers.i2c/17891

Signed-off-by: Luka Perkov <luka@openwrt.org>

SVN-Revision: 39639
This commit is contained in:
Luka Perkov 2014-02-20 14:01:28 +00:00
parent b050f87d13
commit fcbfe67e2a
2 changed files with 0 additions and 76 deletions
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38
target/linux/imx6/patches-3.10/0004-i2c-imx-retry-on-NAK.patch
View File

@ -1,38 +0,0 @@
From: Tim Harvey <tharvey@gateworks.com>
Subject: [PATCH] i2c: imx: retry on NAK
In case of busy i2c try again to get ACK.
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Tested-by: Luka Perkov <luka@openwrt.org>
---
drivers/i2c/busses/i2c-imx.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/i2c/busses/i2c-imx.c
+++ b/drivers/i2c/busses/i2c-imx.c
@@ -62,6 +62,7 @@
/* Default value */
#define IMX_I2C_BIT_RATE 100000 /* 100kHz */
+#define IMX_I2C_MAX_RETRIES 3 /* number of retries to attempt */
/* IMX I2C registers */
#define IMX_I2C_IADR 0x00 /* i2c slave address */
@@ -198,7 +199,7 @@ static int i2c_imx_acked(struct imx_i2c_
{
if (readb(i2c_imx->base + IMX_I2C_I2SR) & I2SR_RXAK) {
dev_dbg(&i2c_imx->adapter.dev, "<%s> No ACK\n", __func__);
- return -EIO; /* No ACK */
+ return -EAGAIN; /* try again */
}
dev_dbg(&i2c_imx->adapter.dev, "<%s> ACK received\n", __func__);
@@ -533,6 +534,7 @@ static int __init i2c_imx_probe(struct p
i2c_imx->adapter.dev.parent = &pdev->dev;
i2c_imx->adapter.nr = pdev->id;
i2c_imx->adapter.dev.of_node = pdev->dev.of_node;
+ i2c_imx->adapter.retries = IMX_I2C_MAX_RETRIES;
i2c_imx->base = base;
pinctrl = devm_pinctrl_get_select_default(&pdev->dev);

38
target/linux/imx6/patches-3.13/0040-i2c-imx-retry-on-NAK.patch
View File

@ -1,38 +0,0 @@
From: Tim Harvey <tharvey@gateworks.com>
Subject: [PATCH] i2c: imx: retry on NAK
In case of busy i2c try again to get ACK.
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Tested-by: Luka Perkov <luka@openwrt.org>
---
drivers/i2c/busses/i2c-imx.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/i2c/busses/i2c-imx.c
+++ b/drivers/i2c/busses/i2c-imx.c
@@ -62,6 +62,7 @@
/* Default value */
#define IMX_I2C_BIT_RATE 100000 /* 100kHz */
+#define IMX_I2C_MAX_RETRIES 3 /* number of retries to attempt */
/* IMX I2C registers:
* the I2C register offset is different between SoCs,
@@ -298,7 +299,7 @@ static int i2c_imx_acked(struct imx_i2c_
{
if (imx_i2c_read_reg(i2c_imx, IMX_I2C_I2SR) & I2SR_RXAK) {
dev_dbg(&i2c_imx->adapter.dev, "<%s> No ACK\n", __func__);
- return -EIO; /* No ACK */
+ return -EAGAIN; /* try again */
}
dev_dbg(&i2c_imx->adapter.dev, "<%s> ACK received\n", __func__);
@@ -635,6 +636,7 @@ static int i2c_imx_probe(struct platform
i2c_imx->adapter.dev.parent = &pdev->dev;
i2c_imx->adapter.nr = pdev->id;
i2c_imx->adapter.dev.of_node = pdev->dev.of_node;
+ i2c_imx->adapter.retries = IMX_I2C_MAX_RETRIES;
i2c_imx->base = base;
/* Get I2C clock */