This patch moves all spi specific code into a new module. The mc13xxx
struct moves to the include file by necessity.
Signed-off-by: Marc Reilly <m...@cpdesign.com.au>
---
drivers/mfd/Makefile | 1 +
drivers/mfd/mc13xxx-core.c | 166 ------------------------------------------
drivers/mfd/mc13xxx-spi.c | 168 +++++++++++++++++++++++++++++++++++++++++++
include/linux/mfd/mc13xxx.h | 21 ++++++
4 files changed, 190 insertions(+), 166 deletions(-)
create mode 100644 drivers/mfd/mc13xxx-spi.c
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index f54b365..492e881 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -42,6 +42,7 @@ obj-$(CONFIG_TWL4030_CODEC) += twl4030-codec.o
obj-$(CONFIG_TWL6030_PWM) += twl6030-pwm.o
obj-$(CONFIG_MFD_MC13XXX) += mc13xxx-core.o
+obj-$(CONFIG_MFD_MC13XXX_SPI) += mc13xxx-spi.o
obj-$(CONFIG_MFD_CORE) += mfd-core.o
diff --git a/drivers/mfd/mc13xxx-core.c b/drivers/mfd/mc13xxx-core.c
index d1f1d7b..3201041 100644
--- a/drivers/mfd/mc13xxx-core.c
+++ b/drivers/mfd/mc13xxx-core.c
@@ -15,31 +15,9 @@
#include <linux/platform_device.h>
#include <linux/mutex.h>
#include <linux/interrupt.h>
-#include <linux/spi/spi.h>
#include <linux/mfd/core.h>
#include <linux/mfd/mc13xxx.h>
-enum mc13xxx_id {
- MC13XXX_ID_MC13783,
- MC13XXX_ID_MC13892,
- MC13XXX_ID_INVALID,
-};
-
-struct mc13xxx {
- struct spi_device *spidev;
-
- struct device *dev;
- enum mc13xxx_id ictype;
-
- struct mutex lock;
-
- int (*read_dev)(struct mc13xxx *, unsigned int, u32 *);
- int (*write_dev)(struct mc13xxx *, unsigned int, u32);
-
- irq_handler_t irqhandler[MC13XXX_NUM_IRQ];
- void *irqdata[MC13XXX_NUM_IRQ];
-};
-
struct mc13783 {
struct mc13xxx mc13xxx;
@@ -180,38 +158,6 @@ void mc13xxx_unlock(struct mc13xxx *mc13xxx)
}
EXPORT_SYMBOL(mc13xxx_unlock);
-#define MC13XXX_REGOFFSET_SHIFT 25
-static int mc13xxx_spi_reg_read(struct mc13xxx *mc13xxx,
- unsigned int offset, u32 *val)
-{
- struct spi_transfer t;
- struct spi_message m;
- int ret;
-
- *val = offset << MC13XXX_REGOFFSET_SHIFT;
-
- memset(&t, 0, sizeof(t));
-
- t.tx_buf = val;
- t.rx_buf = val;
- t.len = sizeof(u32);
-
- spi_message_init(&m);
- spi_message_add_tail(&t, &m);
-
- ret = spi_sync(mc13xxx->spidev, &m);
-
- /* error in message.status implies error return from spi_sync */
- BUG_ON(!ret && m.status);
-
- if (ret)
- return ret;
-
- *val &= 0xffffff;
-
- return 0;
-}
-
int mc13xxx_reg_read(struct mc13xxx *mc13xxx, unsigned int offset, u32 *val)
{
int ret;
@@ -228,35 +174,6 @@ int mc13xxx_reg_read(struct mc13xxx *mc13xxx, unsigned int
offset, u32 *val)
}
EXPORT_SYMBOL(mc13xxx_reg_read);
-static int mc13xxx_spi_reg_write(struct mc13xxx *mc13xxx, unsigned int offset,
- u32 val)
-{
- u32 buf;
- struct spi_transfer t;
- struct spi_message m;
- int ret;
-
- buf = 1 << 31 | offset << MC13XXX_REGOFFSET_SHIFT | val;
-
- memset(&t, 0, sizeof(t));
-
- t.tx_buf = &buf;
- t.rx_buf = &buf;
- t.len = sizeof(u32);
-
- spi_message_init(&m);
- spi_message_add_tail(&t, &m);
-
- ret = spi_sync(mc13xxx->spidev, &m);
-
- BUG_ON(!ret && m.status);
-
- if (ret)
- return ret;
-
- return 0;
-}
-
int mc13xxx_reg_write(struct mc13xxx *mc13xxx, unsigned int offset, u32 val)
{
BUG_ON(!mutex_is_locked(&mc13xxx->lock));
@@ -717,41 +634,6 @@ static int mc13xxx_add_subdevice(struct mc13xxx *mc13xxx,
const char *format)
return mc13xxx_add_subdevice_pdata(mc13xxx, format, NULL, 0);
}
-static int mc13xxx_probe(struct spi_device *spi)
-{
- struct mc13xxx *mc13xxx;
- struct mc13xxx_platform_data *pdata = dev_get_platdata(&spi->dev);
- int ret;
-
- mc13xxx = kzalloc(sizeof(*mc13xxx), GFP_KERNEL);
- if (!mc13xxx)
- return -ENOMEM;
-
- dev_set_drvdata(&spi->dev, mc13xxx);
- spi->mode = SPI_MODE_0 | SPI_CS_HIGH;
- spi->bits_per_word = 32;
- spi_setup(spi);
-
- mc13xxx->dev = &spi->dev;
- mc13xxx->spidev = spi;
- mc13xxx->read_dev = mc13xxx_spi_reg_read;
- mc13xxx->write_dev = mc13xxx_spi_reg_write;
-
- ret = mc13xxx_common_init(mc13xxx, pdata, spi->irq);
-
- if (ret) {
- dev_set_drvdata(&spi->dev, NULL);
- } else {
- const struct spi_device_id *devid =
- spi_get_device_id(mc13xxx->spidev);
- if (!devid || devid->driver_data != mc13xxx->ictype)
- dev_warn(mc13xxx->dev,
- "device id doesn't match auto detection!\n");
- }
-
- return ret;
-}
-
int mc13xxx_common_init(struct mc13xxx *mc13xxx,
struct mc13xxx_platform_data *pdata, int irq)
{
@@ -817,54 +699,6 @@ err_revision:
}
EXPORT_SYMBOL_GPL(mc13xxx_common_init);
-static int __devexit mc13xxx_remove(struct spi_device *spi)
-{
- struct mc13xxx *mc13xxx = dev_get_drvdata(&spi->dev);
-
- free_irq(mc13xxx->spidev->irq, mc13xxx);
-
- mfd_remove_devices(&spi->dev);
-
- kfree(mc13xxx);
-
- return 0;
-}
-
-static const struct spi_device_id mc13xxx_device_id[] = {
- {
- .name = "mc13783",
- .driver_data = MC13XXX_ID_MC13783,
- }, {
- .name = "mc13892",
- .driver_data = MC13XXX_ID_MC13892,
- }, {
- /* sentinel */
- }
-};
-
-static struct spi_driver mc13xxx_driver = {
- .id_table = mc13xxx_device_id,
- .driver = {
- .name = "mc13xxx",
- .bus = &spi_bus_type,
- .owner = THIS_MODULE,
- },
- .probe = mc13xxx_probe,
- .remove = __devexit_p(mc13xxx_remove),
-};
-
-static int __init mc13xxx_init(void)
-{
- return spi_register_driver(&mc13xxx_driver);
-}
-subsys_initcall(mc13xxx_init);
-
-static void __exit mc13xxx_exit(void)
-{
- spi_unregister_driver(&mc13xxx_driver);
-}
-module_exit(mc13xxx_exit);
-
MODULE_DESCRIPTION("Core driver for Freescale MC13XXX PMIC");
MODULE_AUTHOR("Uwe Kleine-Koenig <u.kleine-koe...@pengutronix.de>");
MODULE_LICENSE("GPL v2");
diff --git a/drivers/mfd/mc13xxx-spi.c b/drivers/mfd/mc13xxx-spi.c
new file mode 100644
index 0000000..d8ffff7
--- /dev/null
+++ b/drivers/mfd/mc13xxx-spi.c
@@ -0,0 +1,168 @@
+/*
+ * Copyright 2009-2010 Pengutronix
+ * Uwe Kleine-Koenig <u.kleine-koe...@pengutronix.de>
+ *
+ * loosely based on an earlier driver that has
+ * Copyright 2009 Pengutronix, Sascha Hauer <s.ha...@pengutronix.de>
+ *
+ * This program is free software; you can redistribute it and/or modify it
under
+ * the terms of the GNU General Public License version 2 as published by the
+ * Free Software Foundation.
+ */
+
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/mutex.h>
+#include <linux/interrupt.h>
+#include <linux/spi/spi.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/mc13xxx.h>
+
+#define MC13XXX_REGOFFSET_SHIFT 25
+static int mc13xxx_spi_reg_read(struct mc13xxx *mc13xxx,
+ unsigned int offset, u32 *val)
+{
+ struct spi_transfer t;
+ struct spi_message m;
+ int ret;
+
+ *val = offset << MC13XXX_REGOFFSET_SHIFT;
+
+ memset(&t, 0, sizeof(t));
+
+ t.tx_buf = val;
+ t.rx_buf = val;
+ t.len = sizeof(u32);
+
+ spi_message_init(&m);
+ spi_message_add_tail(&t, &m);
+
+ ret = spi_sync(mc13xxx->spidev, &m);
+
+ /* error in message.status implies error return from spi_sync */
+ BUG_ON(!ret && m.status);
+
+ if (ret)
+ return ret;
+
+ *val &= 0xffffff;
+
+ return 0;
+}
+
+static int mc13xxx_spi_reg_write(struct mc13xxx *mc13xxx, unsigned int offset,
+ u32 val)
+{
+ u32 buf;
+ struct spi_transfer t;
+ struct spi_message m;
+ int ret;
+
+ buf = 1 << 31 | offset << MC13XXX_REGOFFSET_SHIFT | val;
+
+ memset(&t, 0, sizeof(t));
+
+ t.tx_buf = &buf;
+ t.rx_buf = &buf;
+ t.len = sizeof(u32);
+
+ spi_message_init(&m);
+ spi_message_add_tail(&t, &m);
+
+ ret = spi_sync(mc13xxx->spidev, &m);
+
+ BUG_ON(!ret && m.status);
+
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int mc13xxx_spi_probe(struct spi_device *spi)
+{
+ struct mc13xxx *mc13xxx;
+ struct mc13xxx_platform_data *pdata = dev_get_platdata(&spi->dev);
+ int ret;
+
+ mc13xxx = kzalloc(sizeof(*mc13xxx), GFP_KERNEL);
+ if (!mc13xxx)
+ return -ENOMEM;
+
+ dev_set_drvdata(&spi->dev, mc13xxx);
+ spi->mode = SPI_MODE_0 | SPI_CS_HIGH;
+ spi->bits_per_word = 32;
+ spi_setup(spi);
+
+ mc13xxx->dev = &spi->dev;
+ mc13xxx->spidev = spi;
+ mc13xxx->read_dev = mc13xxx_spi_reg_read;
+ mc13xxx->write_dev = mc13xxx_spi_reg_write;
+
+ ret = mc13xxx_common_init(mc13xxx, pdata, spi->irq);
+
+ if (ret) {
+ dev_set_drvdata(&spi->dev, NULL);
+ } else {
+ const struct spi_device_id *devid =
+ spi_get_device_id(mc13xxx->spidev);
+ if (!devid || devid->driver_data != mc13xxx->ictype)
+ dev_warn(mc13xxx->dev,
+ "device id doesn't match auto detection!\n");
+ }
+
+ return ret;
+}
+
+static int __devexit mc13xxx_spi_remove(struct spi_device *spi)
+{
+ struct mc13xxx *mc13xxx = dev_get_drvdata(&spi->dev);
+
+ free_irq(mc13xxx->spidev->irq, mc13xxx);
+
+ mfd_remove_devices(&spi->dev);
+
+ kfree(mc13xxx);
+
+ return 0;
+}
+
+static const struct spi_device_id mc13xxx_device_id[] = {
+ {
+ .name = "mc13783",
+ .driver_data = MC13XXX_ID_MC13783,
+ }, {
+ .name = "mc13892",
+ .driver_data = MC13XXX_ID_MC13892,
+ }, {
+ /* sentinel */
+ }
+};
+
+static struct spi_driver mc13xxx_spi_driver = {
+ .id_table = mc13xxx_device_id,
+ .driver = {
+ .name = "mc13xxx",
+ .bus = &spi_bus_type,
+ .owner = THIS_MODULE,
+ },
+ .probe = mc13xxx_spi_probe,
+ .remove = __devexit_p(mc13xxx_spi_remove),
+};
+
+static int __init mc13xxx_spi_init(void)
+{
+ return spi_register_driver(&mc13xxx_spi_driver);
+}
+subsys_initcall(mc13xxx_spi_init);
+
+static void __exit mc13xxx_spi_exit(void)
+{
+ spi_unregister_driver(&mc13xxx_spi_driver);
+}
+module_exit(mc13xxx_spi_exit);
+
+MODULE_DESCRIPTION("Core driver for Freescale MC13XXX PMIC");
+MODULE_AUTHOR("Uwe Kleine-Koenig <u.kleine-koe...@pengutronix.de>");
+MODULE_LICENSE("GPL v2");
diff --git a/include/linux/mfd/mc13xxx.h b/include/linux/mfd/mc13xxx.h
index f5d277d..ab7deb3 100644
--- a/include/linux/mfd/mc13xxx.h
+++ b/include/linux/mfd/mc13xxx.h
@@ -66,6 +66,27 @@ int mc13xxx_get_flags(struct mc13xxx *mc13xxx);
#define MC13XXX_NUM_IRQ 46
+enum mc13xxx_id {
+ MC13XXX_ID_MC13783,
+ MC13XXX_ID_MC13892,
+ MC13XXX_ID_INVALID,
+};
+
+struct mc13xxx {
+ struct spi_device *spidev;
+
+ struct device *dev;
+ enum mc13xxx_id ictype;
+
+ struct mutex lock;
+
+ int (*read_dev)(struct mc13xxx *, unsigned int, u32 *);
+ int (*write_dev)(struct mc13xxx *, unsigned int, u32);
+
+ irq_handler_t irqhandler[MC13XXX_NUM_IRQ];
+ void *irqdata[MC13XXX_NUM_IRQ];
+};
+
struct regulator_init_data;
struct mc13xxx_regulator_init_data {
--
1.7.1
------------------------------------------------------------------------------
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