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>
diff --git a/drivers/mfd/mc13xxx-core.c b/drivers/mfd/mc13xxx-core.c
index d761a2e..13a32b7 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 @@
#define MC13XXX_ADC2 45
-#define MC13XXX_NUMREGS 0x3f
-
void mc13xxx_lock(struct mc13xxx *mc13xxx)
{
if (!mutex_trylock(&mc13xxx->lock)) {
@@ -674,90 +649,7 @@
}
#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 @@
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 @@
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>");