Re: [PATCH 1/1] i2c: designware: add support of platform data to set I2C mode
On Wed, Sep 03, 2014 at 10:41:38AM +0800, Raymond Tan wrote: > From: "Tan, Raymond" > > Use the platform data to set the clk_freq when there is no DT configuration > available. The clk_freq in turn will determine the I2C speed mode. > > In Quark, there is currently no other configuration mechanism other than > board files. > > Signed-off-by: Raymond Tan > Reviewed-by: Mika Westerberg > Reviewed-by: Hock Leong Kweh Applied to for-next, thanks! signature.asc Description: Digital signature
Re: [PATCH 1/1] i2c: designware: add support of platform data to set I2C mode
On Wed, Sep 03, 2014 at 10:41:38AM +0800, Raymond Tan wrote: From: Tan, Raymond raymond@intel.com Use the platform data to set the clk_freq when there is no DT configuration available. The clk_freq in turn will determine the I2C speed mode. In Quark, there is currently no other configuration mechanism other than board files. Signed-off-by: Raymond Tan raymond@intel.com Reviewed-by: Mika Westerberg mika.westerb...@linux.intel.com Reviewed-by: Hock Leong Kweh hock.leong.k...@intel.com Applied to for-next, thanks! signature.asc Description: Digital signature
[PATCH 1/1] i2c: designware: add support of platform data to set I2C mode
From: "Tan, Raymond"
Use the platform data to set the clk_freq when there is no DT configuration
available. The clk_freq in turn will determine the I2C speed mode.
In Quark, there is currently no other configuration mechanism other than
board files.
Signed-off-by: Raymond Tan
Reviewed-by: Mika Westerberg
Reviewed-by: Hock Leong Kweh
---
drivers/i2c/busses/i2c-designware-platdrv.c |6 ++
include/linux/platform_data/i2c-designware.h | 21 +
2 files changed, 27 insertions(+)
create mode 100644 include/linux/platform_data/i2c-designware.h
diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c
b/drivers/i2c/busses/i2c-designware-platdrv.c
index b543fe1..ce3f779 100644
--- a/drivers/i2c/busses/i2c-designware-platdrv.c
+++ b/drivers/i2c/busses/i2c-designware-platdrv.c
@@ -41,6 +41,7 @@
#include
#include
#include
+#include
#include "i2c-designware-core.h"
static struct i2c_algorithm i2c_dw_algo = {
@@ -121,6 +122,7 @@ static int dw_i2c_probe(struct platform_device *pdev)
struct dw_i2c_dev *dev;
struct i2c_adapter *adap;
struct resource *mem;
+ struct dw_i2c_platform_data *pdata;
int irq, r;
u32 clk_freq;
@@ -181,6 +183,10 @@ static int dw_i2c_probe(struct platform_device *pdev)
dev_err(>dev, "Only 100kHz and 400kHz supported");
return -EINVAL;
}
+ } else {
+ pdata = dev_get_platdata(>dev);
+ if (pdata)
+ clk_freq = pdata->i2c_scl_freq;
}
dev->functionality =
diff --git a/include/linux/platform_data/i2c-designware.h
b/include/linux/platform_data/i2c-designware.h
new file mode 100644
index 000..7a61fb2
--- /dev/null
+++ b/include/linux/platform_data/i2c-designware.h
@@ -0,0 +1,21 @@
+/*
+ * Copyright(c) 2014 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ */
+
+#ifndef I2C_DESIGNWARE_H
+#define I2C_DESIGNWARE_H
+
+struct dw_i2c_platform_data {
+ unsigned int i2c_scl_freq;
+};
+
+#endif
--
1.7.9.5
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[PATCH 1/1] i2c: designware: add support of platform data to set I2C mode
From: Tan, Raymond raymond@intel.com
Use the platform data to set the clk_freq when there is no DT configuration
available. The clk_freq in turn will determine the I2C speed mode.
In Quark, there is currently no other configuration mechanism other than
board files.
Signed-off-by: Raymond Tan raymond@intel.com
Reviewed-by: Mika Westerberg mika.westerb...@linux.intel.com
Reviewed-by: Hock Leong Kweh hock.leong.k...@intel.com
---
drivers/i2c/busses/i2c-designware-platdrv.c |6 ++
include/linux/platform_data/i2c-designware.h | 21 +
2 files changed, 27 insertions(+)
create mode 100644 include/linux/platform_data/i2c-designware.h
diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c
b/drivers/i2c/busses/i2c-designware-platdrv.c
index b543fe1..ce3f779 100644
--- a/drivers/i2c/busses/i2c-designware-platdrv.c
+++ b/drivers/i2c/busses/i2c-designware-platdrv.c
@@ -41,6 +41,7 @@
#include linux/io.h
#include linux/slab.h
#include linux/acpi.h
+#include linux/platform_data/i2c-designware.h
#include i2c-designware-core.h
static struct i2c_algorithm i2c_dw_algo = {
@@ -121,6 +122,7 @@ static int dw_i2c_probe(struct platform_device *pdev)
struct dw_i2c_dev *dev;
struct i2c_adapter *adap;
struct resource *mem;
+ struct dw_i2c_platform_data *pdata;
int irq, r;
u32 clk_freq;
@@ -181,6 +183,10 @@ static int dw_i2c_probe(struct platform_device *pdev)
dev_err(pdev-dev, Only 100kHz and 400kHz supported);
return -EINVAL;
}
+ } else {
+ pdata = dev_get_platdata(pdev-dev);
+ if (pdata)
+ clk_freq = pdata-i2c_scl_freq;
}
dev-functionality =
diff --git a/include/linux/platform_data/i2c-designware.h
b/include/linux/platform_data/i2c-designware.h
new file mode 100644
index 000..7a61fb2
--- /dev/null
+++ b/include/linux/platform_data/i2c-designware.h
@@ -0,0 +1,21 @@
+/*
+ * Copyright(c) 2014 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ */
+
+#ifndef I2C_DESIGNWARE_H
+#define I2C_DESIGNWARE_H
+
+struct dw_i2c_platform_data {
+ unsigned int i2c_scl_freq;
+};
+
+#endif
--
1.7.9.5
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