On 07/16/2014 11:25 PM, Antony Pavlov wrote:
This driver is also used for Allwinner SoCs I2C controllers.
Ported from linux-3.15.
The most notable barebox driver version changes:
* drop message offloading support;
* add reg-io-width parameter to use driver with byte-oriented
controller versions.
Signed-off-by: Antony Pavlov <antonynpavlov@xxxxxxxxx>
---
[...]
diff --git a/drivers/i2c/busses/i2c-mv64xxx.c b/drivers/i2c/busses/i2c-mv64xxx.c
new file mode 100644
index 0000000..324796a
--- /dev/null
+++ b/drivers/i2c/busses/i2c-mv64xxx.c
@@ -0,0 +1,687 @@
+/*
+ * Driver for the i2c controller on the Marvell line of host bridges
+ * (e.g, gt642[46]0, mv643[46]0, mv644[46]0, and Orion SoC family).
+ *
+ * This code was ported from linux-3.15 kernel by Antony Pavlov.
+ *
+ * Author: Mark A. Greer <mgreer@xxxxxxxxxx>
+ *
+ * 2005 (c) MontaVista, Software, Inc. This file is licensed under
+ * the terms of the GNU General Public License version 2. This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+#include <common.h>
+#include <driver.h>
+#include <init.h>
+#include <of.h>
+#include <malloc.h>
+#include <types.h>
+#include <xfuncs.h>
+#include <clock.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+
+#include <io.h>
+#include <i2c/i2c.h>
+#include <printk.h>
+
+#define MV64XXX_I2C_ADDR_ADDR(val) ((val & 0x7f) << 1)
+#define MV64XXX_I2C_BAUD_DIV_N(val) (val & 0x7)
+#define MV64XXX_I2C_BAUD_DIV_M(val) ((val & 0xf) << 3)
+
+#define MV64XXX_I2C_REG_CONTROL_ACK 0x00000004
+#define MV64XXX_I2C_REG_CONTROL_IFLG 0x00000008
+#define MV64XXX_I2C_REG_CONTROL_STOP 0x00000010
+#define MV64XXX_I2C_REG_CONTROL_START 0x00000020
+#define MV64XXX_I2C_REG_CONTROL_TWSIEN 0x00000040
+#define MV64XXX_I2C_REG_CONTROL_INTEN 0x00000080
Antony,
I'll have a look at the driver itself later, but your patch is full
of superfluous tabs like above between '#define' and 'MV64XXX_foo'.
Isn't checkpatch.pl complaining about it? Anyway, no need to resend
before I have tested the driver itself.
Sebastian
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