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i2c: designware: Move configuration routines to respective modules 

Move configuration routines to respective modules, i.e. master and slave.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
This commit is contained in:
Andy Shevchenko 2020-04-25 16:44:45 +03:00 committed by Wolfram Sang
parent 188fe480cd
commit 3ebe40ed1c
4 changed files with 48 additions and 37 deletions
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12
drivers/i2c/busses/i2c-designware-core.h
View File

@ -314,13 +314,25 @@ static inline void __i2c_dw_disable_nowait(struct dw_i2c_dev *dev)
void __i2c_dw_disable(struct dw_i2c_dev *dev);
extern void i2c_dw_configure_master(struct dw_i2c_dev *dev);
extern int i2c_dw_probe(struct dw_i2c_dev *dev);
#if IS_ENABLED(CONFIG_I2C_DESIGNWARE_SLAVE)
extern void i2c_dw_configure_slave(struct dw_i2c_dev *dev);
extern int i2c_dw_probe_slave(struct dw_i2c_dev *dev);
#else
static inline void i2c_dw_configure_slave(struct dw_i2c_dev *dev) { }
static inline int i2c_dw_probe_slave(struct dw_i2c_dev *dev) { return -EINVAL; }
#endif
static inline void i2c_dw_configure(struct dw_i2c_dev *dev)
{
if (i2c_detect_slave_mode(dev->dev))
i2c_dw_configure_slave(dev);
else
i2c_dw_configure_master(dev);
}
#if IS_ENABLED(CONFIG_I2C_DESIGNWARE_BAYTRAIL)
extern int i2c_dw_probe_lock_support(struct dw_i2c_dev *dev);
#else

24
drivers/i2c/busses/i2c-designware-master.c
View File

@ -657,6 +657,30 @@ static irqreturn_t i2c_dw_isr(int this_irq, void *dev_id)
return IRQ_HANDLED;
}
void i2c_dw_configure_master(struct dw_i2c_dev *dev)
{
struct i2c_timings *t = &dev->timings;
dev->functionality = I2C_FUNC_10BIT_ADDR | DW_IC_DEFAULT_FUNCTIONALITY;
dev->master_cfg = DW_IC_CON_MASTER | DW_IC_CON_SLAVE_DISABLE |
DW_IC_CON_RESTART_EN;
dev->mode = DW_IC_MASTER;
switch (t->bus_freq_hz) {
case I2C_MAX_STANDARD_MODE_FREQ:
dev->master_cfg |= DW_IC_CON_SPEED_STD;
break;
case I2C_MAX_HIGH_SPEED_MODE_FREQ:
dev->master_cfg |= DW_IC_CON_SPEED_HIGH;
break;
default:
dev->master_cfg |= DW_IC_CON_SPEED_FAST;
}
}
EXPORT_SYMBOL_GPL(i2c_dw_configure_master);
static void i2c_dw_prepare_recovery(struct i2c_adapter *adap)
{
struct dw_i2c_dev *dev = i2c_get_adapdata(adap);

38
drivers/i2c/busses/i2c-designware-platdrv.c
View File

@ -184,39 +184,6 @@ static inline int dw_i2c_of_configure(struct platform_device *pdev)
}
#endif
static void i2c_dw_configure_master(struct dw_i2c_dev *dev)
{
struct i2c_timings *t = &dev->timings;
dev->functionality = I2C_FUNC_10BIT_ADDR | DW_IC_DEFAULT_FUNCTIONALITY;
dev->master_cfg = DW_IC_CON_MASTER | DW_IC_CON_SLAVE_DISABLE |
DW_IC_CON_RESTART_EN;
dev->mode = DW_IC_MASTER;
switch (t->bus_freq_hz) {
case I2C_MAX_STANDARD_MODE_FREQ:
dev->master_cfg |= DW_IC_CON_SPEED_STD;
break;
case I2C_MAX_HIGH_SPEED_MODE_FREQ:
dev->master_cfg |= DW_IC_CON_SPEED_HIGH;
break;
default:
dev->master_cfg |= DW_IC_CON_SPEED_FAST;
}
}
static void i2c_dw_configure_slave(struct dw_i2c_dev *dev)
{
dev->functionality = I2C_FUNC_SLAVE | DW_IC_DEFAULT_FUNCTIONALITY;
dev->slave_cfg = DW_IC_CON_RX_FIFO_FULL_HLD_CTRL |
DW_IC_CON_RESTART_EN | DW_IC_CON_STOP_DET_IFADDRESSED;
dev->mode = DW_IC_SLAVE;
}
static void dw_i2c_plat_pm_cleanup(struct dw_i2c_dev *dev)
{
pm_runtime_disable(dev->dev);
@ -319,10 +286,7 @@ static int dw_i2c_plat_probe(struct platform_device *pdev)
if (ret)
goto exit_reset;
if (i2c_detect_slave_mode(&pdev->dev))
i2c_dw_configure_slave(dev);
else
i2c_dw_configure_master(dev);
i2c_dw_configure(dev);
/* Optional interface clock */
dev->pclk = devm_clk_get_optional(&pdev->dev, "pclk");

11
drivers/i2c/busses/i2c-designware-slave.c
View File

@ -241,6 +241,17 @@ static const struct i2c_algorithm i2c_dw_algo = {
.unreg_slave = i2c_dw_unreg_slave,
};
void i2c_dw_configure_slave(struct dw_i2c_dev *dev)
{
dev->functionality = I2C_FUNC_SLAVE | DW_IC_DEFAULT_FUNCTIONALITY;
dev->slave_cfg = DW_IC_CON_RX_FIFO_FULL_HLD_CTRL |
DW_IC_CON_RESTART_EN | DW_IC_CON_STOP_DET_IFADDRESSED;
dev->mode = DW_IC_SLAVE;
}
EXPORT_SYMBOL_GPL(i2c_dw_configure_slave);
int i2c_dw_probe_slave(struct dw_i2c_dev *dev)
{
struct i2c_adapter *adap = &dev->adapter;