From db9ef449aaa550389008c2020fba02e4440ce24b Mon Sep 17 00:00:00 2001 From: Alexander Shiyan Date: Sat, 14 Dec 2013 17:03:12 +0400 Subject: [PATCH] mfd: mc13xxx: Simplify probe() & remove() This patch simplifies probe() and remove() functions by moving some initialisation code out from the I2C/SPI init() and exit() functions and into the core driver. Signed-off-by: Alexander Shiyan Signed-off-by: Lee Jones --- drivers/mfd/mc13xxx-core.c | 36 +++++++++++++++++------------------- drivers/mfd/mc13xxx-i2c.c | 18 ++++-------------- drivers/mfd/mc13xxx-spi.c | 19 ++++++------------- drivers/mfd/mc13xxx.h | 6 ++---- 4 files changed, 29 insertions(+), 50 deletions(-) diff --git a/drivers/mfd/mc13xxx-core.c b/drivers/mfd/mc13xxx-core.c index b0c7cb04af85..06e64b6fcb89 100644 --- a/drivers/mfd/mc13xxx-core.c +++ b/drivers/mfd/mc13xxx-core.c @@ -636,42 +636,36 @@ static inline int mc13xxx_probe_flags_dt(struct mc13xxx *mc13xxx) } #endif -int mc13xxx_common_init(struct mc13xxx *mc13xxx, - struct mc13xxx_platform_data *pdata, int irq) +int mc13xxx_common_init(struct device *dev) { + struct mc13xxx_platform_data *pdata = dev_get_platdata(dev); + struct mc13xxx *mc13xxx = dev_get_drvdata(dev); int ret; u32 revision; - mc13xxx_lock(mc13xxx); + mc13xxx->dev = dev; ret = mc13xxx_reg_read(mc13xxx, MC13XXX_REVISION, &revision); if (ret) - goto err_revision; + return ret; mc13xxx->variant->print_revision(mc13xxx, revision); /* mask all irqs */ ret = mc13xxx_reg_write(mc13xxx, MC13XXX_IRQMASK0, 0x00ffffff); if (ret) - goto err_mask; + return ret; ret = mc13xxx_reg_write(mc13xxx, MC13XXX_IRQMASK1, 0x00ffffff); if (ret) - goto err_mask; + return ret; - ret = request_threaded_irq(irq, NULL, mc13xxx_irq_thread, + ret = request_threaded_irq(mc13xxx->irq, NULL, mc13xxx_irq_thread, IRQF_ONESHOT | IRQF_TRIGGER_HIGH, "mc13xxx", mc13xxx); - - if (ret) { -err_mask: -err_revision: - mc13xxx_unlock(mc13xxx); + if (ret) return ret; - } - - mc13xxx->irq = irq; - mc13xxx_unlock(mc13xxx); + mutex_init(&mc13xxx->lock); if (mc13xxx_probe_flags_dt(mc13xxx) < 0 && pdata) mc13xxx->flags = pdata->flags; @@ -707,13 +701,17 @@ err_revision: } EXPORT_SYMBOL_GPL(mc13xxx_common_init); -void mc13xxx_common_cleanup(struct mc13xxx *mc13xxx) +int mc13xxx_common_exit(struct device *dev) { + struct mc13xxx *mc13xxx = dev_get_drvdata(dev); + free_irq(mc13xxx->irq, mc13xxx); + mfd_remove_devices(dev); + mutex_destroy(&mc13xxx->lock); - mfd_remove_devices(mc13xxx->dev); + return 0; } -EXPORT_SYMBOL_GPL(mc13xxx_common_cleanup); +EXPORT_SYMBOL_GPL(mc13xxx_common_exit); MODULE_DESCRIPTION("Core driver for Freescale MC13XXX PMIC"); MODULE_AUTHOR("Uwe Kleine-Koenig "); diff --git a/drivers/mfd/mc13xxx-i2c.c b/drivers/mfd/mc13xxx-i2c.c index 898bd335cd8e..ae3addb153a2 100644 --- a/drivers/mfd/mc13xxx-i2c.c +++ b/drivers/mfd/mc13xxx-i2c.c @@ -10,7 +10,6 @@ #include #include #include -#include #include #include #include @@ -60,7 +59,6 @@ static int mc13xxx_i2c_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct mc13xxx *mc13xxx; - struct mc13xxx_platform_data *pdata = dev_get_platdata(&client->dev); int ret; mc13xxx = devm_kzalloc(&client->dev, sizeof(*mc13xxx), GFP_KERNEL); @@ -69,15 +67,13 @@ static int mc13xxx_i2c_probe(struct i2c_client *client, dev_set_drvdata(&client->dev, mc13xxx); - mc13xxx->dev = &client->dev; - mutex_init(&mc13xxx->lock); + mc13xxx->irq = client->irq; mc13xxx->regmap = devm_regmap_init_i2c(client, &mc13xxx_regmap_i2c_config); if (IS_ERR(mc13xxx->regmap)) { ret = PTR_ERR(mc13xxx->regmap); - dev_err(mc13xxx->dev, "Failed to initialize register map: %d\n", - ret); + dev_err(&client->dev, "Failed to initialize regmap: %d\n", ret); return ret; } @@ -89,18 +85,12 @@ static int mc13xxx_i2c_probe(struct i2c_client *client, mc13xxx->variant = (void *)id->driver_data; } - ret = mc13xxx_common_init(mc13xxx, pdata, client->irq); - - return ret; + return mc13xxx_common_init(&client->dev); } static int mc13xxx_i2c_remove(struct i2c_client *client) { - struct mc13xxx *mc13xxx = dev_get_drvdata(&client->dev); - - mc13xxx_common_cleanup(mc13xxx); - - return 0; + return mc13xxx_common_exit(&client->dev); } static struct i2c_driver mc13xxx_i2c_driver = { diff --git a/drivers/mfd/mc13xxx-spi.c b/drivers/mfd/mc13xxx-spi.c index cbcc86d9b6e7..38ab67829791 100644 --- a/drivers/mfd/mc13xxx-spi.c +++ b/drivers/mfd/mc13xxx-spi.c @@ -13,7 +13,6 @@ #include #include #include -#include #include #include #include @@ -129,26 +128,24 @@ static struct regmap_bus regmap_mc13xxx_bus = { 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 = devm_kzalloc(&spi->dev, sizeof(*mc13xxx), GFP_KERNEL); if (!mc13xxx) return -ENOMEM; - spi_set_drvdata(spi, mc13xxx); + dev_set_drvdata(&spi->dev, mc13xxx); + spi->mode = SPI_MODE_0 | SPI_CS_HIGH; - mc13xxx->dev = &spi->dev; - mutex_init(&mc13xxx->lock); + mc13xxx->irq = spi->irq; mc13xxx->regmap = devm_regmap_init(&spi->dev, ®map_mc13xxx_bus, &spi->dev, &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_err(&spi->dev, "Failed to initialize regmap: %d\n", ret); return ret; } @@ -163,16 +160,12 @@ static int mc13xxx_spi_probe(struct spi_device *spi) mc13xxx->variant = (void *)id_entry->driver_data; } - return mc13xxx_common_init(mc13xxx, pdata, spi->irq); + return mc13xxx_common_init(&spi->dev); } static int mc13xxx_spi_remove(struct spi_device *spi) { - struct mc13xxx *mc13xxx = spi_get_drvdata(spi); - - mc13xxx_common_cleanup(mc13xxx); - - return 0; + return mc13xxx_common_exit(&spi->dev); } static struct spi_driver mc13xxx_spi_driver = { diff --git a/drivers/mfd/mc13xxx.h b/drivers/mfd/mc13xxx.h index 460ec5c7b18c..ae7f1659f5d1 100644 --- a/drivers/mfd/mc13xxx.h +++ b/drivers/mfd/mc13xxx.h @@ -43,9 +43,7 @@ struct mc13xxx { int adcflags; }; -int mc13xxx_common_init(struct mc13xxx *mc13xxx, - struct mc13xxx_platform_data *pdata, int irq); - -void mc13xxx_common_cleanup(struct mc13xxx *mc13xxx); +int mc13xxx_common_init(struct device *dev); +int mc13xxx_common_exit(struct device *dev); #endif /* __DRIVERS_MFD_MC13XXX_H */ -- 2.34.1