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i2c: designware: Cleanup bus lock handling 

Now that most of the special Bay- / Cherry-Trail bus lock handling has
been moved to the iosf_mbi code we can simplify the remaining code a bit.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Tested-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Hans de Goede 2018-10-11 16:29:11 +02:00 committed by Rafael J. Wysocki
parent 3c670dba86
commit 8afb46804d
4 changed files with 6 additions and 27 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/i2c/busses/i2c-designware-baytrail.c
View File

@ -12,16 +12,6 @@
#include "i2c-designware-core.h"
static int baytrail_i2c_acquire(struct dw_i2c_dev *dev)
{
return iosf_mbi_block_punit_i2c_access();
}
static void baytrail_i2c_release(struct dw_i2c_dev *dev)
{
iosf_mbi_unblock_punit_i2c_access();
}
int i2c_dw_probe_lock_support(struct dw_i2c_dev *dev)
{
acpi_status status;
@ -46,13 +36,9 @@ int i2c_dw_probe_lock_support(struct dw_i2c_dev *dev)
return -EPROBE_DEFER;
dev_info(dev->dev, "I2C bus managed by PUNIT\n");
dev->acquire_lock = baytrail_i2c_acquire;
dev->release_lock = baytrail_i2c_release;
dev->acquire_lock = iosf_mbi_block_punit_i2c_access;
dev->release_lock = iosf_mbi_unblock_punit_i2c_access;
dev->pm_disabled = true;
return 0;
}
void i2c_dw_remove_lock_support(struct dw_i2c_dev *dev)
{
}

4
drivers/i2c/busses/i2c-designware-common.c
View File

@ -267,7 +267,7 @@ int i2c_dw_acquire_lock(struct dw_i2c_dev *dev)
if (!dev->acquire_lock)
return 0;
ret = dev->acquire_lock(dev);
ret = dev->acquire_lock();
if (!ret)
return 0;
@ -279,7 +279,7 @@ int i2c_dw_acquire_lock(struct dw_i2c_dev *dev)
void i2c_dw_release_lock(struct dw_i2c_dev *dev)
{
if (dev->release_lock)
dev->release_lock(dev);
dev->release_lock();
}
/*

9
drivers/i2c/busses/i2c-designware-core.h
View File

@ -10,7 +10,6 @@
*/
#include <linux/i2c.h>
#include <linux/pm_qos.h>
#define DW_IC_DEFAULT_FUNCTIONALITY (I2C_FUNC_I2C | \
I2C_FUNC_SMBUS_BYTE | \
@ -209,7 +208,6 @@
* @fp_lcnt: fast plus LCNT value
* @hs_hcnt: high speed HCNT value
* @hs_lcnt: high speed LCNT value
* @pm_qos: pm_qos_request used while holding a hardware lock on the bus
* @acquire_lock: function to acquire a hardware lock on the bus
* @release_lock: function to release a hardware lock on the bus
* @pm_disabled: true if power-management should be disabled for this i2c-bus
@ -262,9 +260,8 @@ struct dw_i2c_dev {
u16 fp_lcnt;
u16 hs_hcnt;
u16 hs_lcnt;
struct pm_qos_request pm_qos;
int (*acquire_lock)(struct dw_i2c_dev *dev);
void (*release_lock)(struct dw_i2c_dev *dev);
int (*acquire_lock)(void);
void (*release_lock)(void);
bool pm_disabled;
void (*disable)(struct dw_i2c_dev *dev);
void (*disable_int)(struct dw_i2c_dev *dev);
@ -317,8 +314,6 @@ static inline int i2c_dw_probe_slave(struct dw_i2c_dev *dev) { return -EINVAL; }
#if IS_ENABLED(CONFIG_I2C_DESIGNWARE_BAYTRAIL)
extern int i2c_dw_probe_lock_support(struct dw_i2c_dev *dev);
extern void i2c_dw_remove_lock_support(struct dw_i2c_dev *dev);
#else
static inline int i2c_dw_probe_lock_support(struct dw_i2c_dev *dev) { return 0; }
static inline void i2c_dw_remove_lock_support(struct dw_i2c_dev *dev) {}
#endif

2
drivers/i2c/busses/i2c-designware-platdrv.c
View File

@ -388,8 +388,6 @@ static int dw_i2c_plat_remove(struct platform_device *pdev)
if (!IS_ERR_OR_NULL(dev->rst))
reset_control_assert(dev->rst);
i2c_dw_remove_lock_support(dev);
return 0;
}