Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a0832798c05241f15e793805b6024919c07b8292
Commit: a0832798c05241f15e793805b6024919c07b8292
Parent: 60ce1c20068ec2c138cdf9e5cbe583cc60883c62
Author: Tzachi Perelstein <[EMAIL PROTECTED]>
AuthorDate: Mon Nov 12 19:38:51 2007 +0200
Committer: Russell King <[EMAIL PROTECTED]>
CommitDate: Sat Jan 26 15:03:59 2008 +0000
[I2C] Split mv643xx I2C platform support
The motivation for this change is to allow other chips, like the
Marvell Orion ARM SoC family, to use the existing i2c-mv64xxx driver.
Signed-off-by: Tzachi Perelstein <[EMAIL PROTECTED]>
Acked-by: Nicolas Pitre <[EMAIL PROTECTED]>
Acked-by: Dale Farnsworth <[EMAIL PROTECTED]>
Acked-by: Mark A. Greer <[EMAIL PROTECTED]>
Acked-by: Jean Delvare <[EMAIL PROTECTED]>
---
drivers/i2c/busses/Kconfig | 2 +-
drivers/i2c/busses/i2c-mv64xxx.c | 31 +++++++++++++++++--------------
include/linux/mv643xx.h | 10 +---------
include/linux/mv643xx_i2c.h | 23 +++++++++++++++++++++++
4 files changed, 42 insertions(+), 24 deletions(-)
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index c466c6c..b148bf0 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -648,7 +648,7 @@ config I2C_PCA_ISA
config I2C_MV64XXX
tristate "Marvell mv64xxx I2C Controller"
- depends on MV64X60 && EXPERIMENTAL
+ depends on (MV64X60 || ARCH_ORION) && EXPERIMENTAL
help
If you say yes to this option, support will be included for the
built-in I2C interface on the Marvell 64xxx line of host bridges.
diff --git a/drivers/i2c/busses/i2c-mv64xxx.c b/drivers/i2c/busses/i2c-mv64xxx.c
index bb7bf68..cdd1ef9 100644
--- a/drivers/i2c/busses/i2c-mv64xxx.c
+++ b/drivers/i2c/busses/i2c-mv64xxx.c
@@ -1,6 +1,6 @@
/*
- * Driver for the i2c controller on the Marvell line of host bridges for MIPS
- * and PPC (e.g, gt642[46]0, mv643[46]0, mv644[46]0).
+ * 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).
*
* Author: Mark A. Greer <[EMAIL PROTECTED]>
*
@@ -14,7 +14,7 @@
#include <linux/spinlock.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
-#include <linux/mv643xx.h>
+#include <linux/mv643xx_i2c.h>
#include <linux/platform_device.h>
#include <asm/io.h>
@@ -86,6 +86,7 @@ struct mv64xxx_i2c_data {
u32 cntl_bits;
void __iomem *reg_base;
u32 reg_base_p;
+ u32 reg_size;
u32 addr1;
u32 addr2;
u32 bytes_left;
@@ -463,17 +464,20 @@ static int __devinit
mv64xxx_i2c_map_regs(struct platform_device *pd,
struct mv64xxx_i2c_data *drv_data)
{
- struct resource *r;
+ int size;
+ struct resource *r = platform_get_resource(pd, IORESOURCE_MEM, 0);
- if ((r = platform_get_resource(pd, IORESOURCE_MEM, 0)) &&
- request_mem_region(r->start, MV64XXX_I2C_REG_BLOCK_SIZE,
- drv_data->adapter.name)) {
+ if (!r)
+ return -ENODEV;
- drv_data->reg_base = ioremap(r->start,
- MV64XXX_I2C_REG_BLOCK_SIZE);
- drv_data->reg_base_p = r->start;
- } else
- return -ENOMEM;
+ size = r->end - r->start + 1;
+
+ if (!request_mem_region(r->start, size, drv_data->adapter.name))
+ return -EBUSY;
+
+ drv_data->reg_base = ioremap(r->start, size);
+ drv_data->reg_base_p = r->start;
+ drv_data->reg_size = size;
return 0;
}
@@ -483,8 +487,7 @@ mv64xxx_i2c_unmap_regs(struct mv64xxx_i2c_data *drv_data)
{
if (drv_data->reg_base) {
iounmap(drv_data->reg_base);
- release_mem_region(drv_data->reg_base_p,
- MV64XXX_I2C_REG_BLOCK_SIZE);
+ release_mem_region(drv_data->reg_base_p, drv_data->reg_size);
}
drv_data->reg_base = NULL;
diff --git a/include/linux/mv643xx.h b/include/linux/mv643xx.h
index d2ae618..69327b7 100644
--- a/include/linux/mv643xx.h
+++ b/include/linux/mv643xx.h
@@ -15,6 +15,7 @@
#include <asm/types.h>
#include <linux/mv643xx_eth.h>
+#include <linux/mv643xx_i2c.h>
/****************************************/
/* Processor Address Space */
@@ -863,7 +864,6 @@
/* I2C Registers */
/****************************************/
-#define MV64XXX_I2C_CTLR_NAME "mv64xxx_i2c"
#define MV64XXX_I2C_OFFSET 0xc000
#define MV64XXX_I2C_REG_BLOCK_SIZE 0x0020
@@ -968,14 +968,6 @@ struct mpsc_pdata {
u32 brg_clk_freq;
};
-/* i2c Platform Device, Driver Data */
-struct mv64xxx_i2c_pdata {
- u32 freq_m;
- u32 freq_n;
- u32 timeout; /* In milliseconds */
- u32 retries;
-};
-
/* Watchdog Platform Device, Driver Data */
#define MV64x60_WDT_NAME "mv64x60_wdt"
diff --git a/include/linux/mv643xx_i2c.h b/include/linux/mv643xx_i2c.h
new file mode 100644
index 0000000..adb629b
--- /dev/null
+++ b/include/linux/mv643xx_i2c.h
@@ -0,0 +1,23 @@
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#ifndef _MV64XXX_I2C_H_
+#define _MV64XXX_I2C_H_
+
+#include <linux/types.h>
+
+#define MV64XXX_I2C_CTLR_NAME "mv64xxx_i2c"
+
+/* i2c Platform Device, Driver Data */
+struct mv64xxx_i2c_pdata {
+ u32 freq_m;
+ u32 freq_n;
+ u32 timeout; /* In milliseconds */
+ u32 retries;
+};
+
+#endif /*_MV64XXX_I2C_H_*/
-
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