mfd: Move the mc13xxx-core spi specific code into a separate module

All spi specific code is moved into a new module. The mc13xxx struct
moves to a new local include file by necessity.

A new config choice selects the SPI bus type support and by default is
value of SPI_MASTER to remain compatible with existing configs.

Signed-off-by: Marc Reilly <marc@cpdesign.com.au>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 5 insertions, 143 deletions

diff --git a/drivers/mfd/mc13xxx-core.c b/drivers/mfd/mc13xxx-core.c
index d761a2e54b98..13a32b795615 100644
--- a/drivers/mfd/mc13xxx-core.c
+++ b/drivers/mfd/mc13xxx-core.c
@@ -15,36 +15,13 @@
 #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>
 #include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/of_gpio.h>
-#include <linux/regmap.h>
-#include <linux/err.h>
 
-enum mc13xxx_id {
-	MC13XXX_ID_MC13783,
-	MC13XXX_ID_MC13892,
-	MC13XXX_ID_INVALID,
-};
-
-struct mc13xxx {
-	struct regmap *regmap;
-
-	struct device *dev;
-	enum mc13xxx_id ictype;
-
-	struct mutex lock;
-	int irq;
-	int flags;
-
-	irq_handler_t irqhandler[MC13XXX_NUM_IRQ];
-	void *irqdata[MC13XXX_NUM_IRQ];
-
-	int adcflags;
-};
+#include "mc13xxx.h"
 
 #define MC13XXX_IRQSTAT0	0
 #define MC13XXX_IRQSTAT0_ADCDONEI	(1 << 0)
@@ -151,8 +128,6 @@ struct mc13xxx {
 
 #define MC13XXX_ADC2		45
 
-#define MC13XXX_NUMREGS 0x3f
-
 void mc13xxx_lock(struct mc13xxx *mc13xxx)
 {
 	if (!mutex_trylock(&mc13xxx->lock)) {
@@ -674,90 +649,7 @@ static inline int mc13xxx_probe_flags_dt(struct mc13xxx *mc13xxx)
 }
 #endif
 
-static const struct spi_device_id mc13xxx_device_id[] = {
-	{
-		.name = "mc13783",
-		.driver_data = MC13XXX_ID_MC13783,
-	}, {
-		.name = "mc13892",
-		.driver_data = MC13XXX_ID_MC13892,
-	}, {
-		/* sentinel */
-	}
-};
-MODULE_DEVICE_TABLE(spi, mc13xxx_device_id);
-
-static const struct of_device_id mc13xxx_dt_ids[] = {
-	{ .compatible = "fsl,mc13783", .data = (void *) MC13XXX_ID_MC13783, },
-	{ .compatible = "fsl,mc13892", .data = (void *) MC13XXX_ID_MC13892, },
-	{ /* sentinel */ }
-};
-MODULE_DEVICE_TABLE(of, mc13xxx_dt_ids);
-
-static struct regmap_config mc13xxx_regmap_spi_config = {
-	.reg_bits = 7,
-	.pad_bits = 1,
-	.val_bits = 24,
-
-	.max_register = MC13XXX_NUMREGS,
-
-	.cache_type = REGCACHE_NONE,
-};
-
-static int mc13xxx_common_init(struct mc13xxx *mc13xxx,
-		struct mc13xxx_platform_data *pdata, int irq);
-
-static void mc13xxx_common_cleanup(struct mc13xxx *mc13xxx);
-
-static int mc13xxx_spi_probe(struct spi_device *spi)
-{
-	const struct of_device_id *of_id;
-	struct spi_driver *sdrv = to_spi_driver(spi->dev.driver);
-	struct mc13xxx *mc13xxx;
-	struct mc13xxx_platform_data *pdata = dev_get_platdata(&spi->dev);
-	int ret;
-
-	of_id = of_match_device(mc13xxx_dt_ids, &spi->dev);
-	if (of_id)
-		sdrv->id_table = &mc13xxx_device_id[(enum mc13xxx_id) of_id->data];
-
-	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;
-
-	mc13xxx->dev = &spi->dev;
-	mutex_init(&mc13xxx->lock);
-
-	mc13xxx->regmap = regmap_init_spi(spi, &mc13xxx_regmap_spi_config);
-	if (IS_ERR(mc13xxx->regmap)) {
-		ret = PTR_ERR(mc13xxx->regmap);
-		dev_err(mc13xxx->dev, "Failed to initialize register map: %d\n",
-				ret);
-		dev_set_drvdata(&spi->dev, NULL);
-		kfree(mc13xxx);
-		return ret;
-	}
-
-	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(spi);
-		if (!devid || devid->driver_data != mc13xxx->ictype)
-			dev_warn(mc13xxx->dev,
-				"device id doesn't match auto detection!\n");
-	}
-
-	return ret;
-}
-
-static int mc13xxx_common_init(struct mc13xxx *mc13xxx,
+int mc13xxx_common_init(struct mc13xxx *mc13xxx,
 		struct mc13xxx_platform_data *pdata, int irq)
 {
 	int ret;
@@ -823,17 +715,9 @@ err_revision:
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(mc13xxx_common_init);
 
-static int __devexit mc13xxx_spi_remove(struct spi_device *spi)
-{
-	struct mc13xxx *mc13xxx = dev_get_drvdata(&spi->dev);
-
-	mc13xxx_common_cleanup(mc13xxx);
-
-	return 0;
-}
-
-static void mc13xxx_common_cleanup(struct mc13xxx *mc13xxx)
+void mc13xxx_common_cleanup(struct mc13xxx *mc13xxx)
 {
 	free_irq(mc13xxx->irq, mc13xxx);
 
@@ -843,29 +727,7 @@ static void mc13xxx_common_cleanup(struct mc13xxx *mc13xxx)
 
 	kfree(mc13xxx);
 }
-
-static struct spi_driver mc13xxx_spi_driver = {
-	.id_table = mc13xxx_device_id,
-	.driver = {
-		.name = "mc13xxx",
-		.owner = THIS_MODULE,
-		.of_match_table = mc13xxx_dt_ids,
-	},
-	.probe = mc13xxx_spi_probe,
-	.remove = __devexit_p(mc13xxx_spi_remove),
-};
-
-static int __init mc13xxx_init(void)
-{
-	return spi_register_driver(&mc13xxx_spi_driver);
-}
-subsys_initcall(mc13xxx_init);
-
-static void __exit mc13xxx_exit(void)
-{
-	spi_unregister_driver(&mc13xxx_spi_driver);
-}
-module_exit(mc13xxx_exit);
+EXPORT_SYMBOL_GPL(mc13xxx_common_cleanup);
 
 MODULE_DESCRIPTION("Core driver for Freescale MC13XXX PMIC");
 MODULE_AUTHOR("Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>");