diff options
| author | Luis Oliveira <Luis.Oliveira@synopsys.com> | 2017-06-14 13:43:22 +0300 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2017-06-19 19:24:25 +0300 |
| commit | 89a1e1bd7ba9a6711908bb79af0af6cbdf4a7e79 (patch) | |
| tree | 83f9c7ead1a29d7d490980428b196ad38c5a0254 /drivers/i2c/busses/i2c-designware-platdrv.c | |
| parent | e393f674c5fedced24432138a8fc40c3d7a628b8 (diff) | |
| download | linux-89a1e1bd7ba9a6711908bb79af0af6cbdf4a7e79.tar.xz | |
i2c: designware: refactoring of the i2c-designware
- Factor out all _master() part of code from i2c-designware-core
and i2c-designware-platdrv to separate functions.
- Standardize all code related with MASTER mode.
- I have to take off DW_IC_INTR_TX_EMPTY from DW_IC_INTR_DEFAULT_MASK
because it is master specific.
The purpose of this is to prepare the controller to have is I2C MASTER
flow in a separate driver. To do this first all the
functions/definitions related to the MASTER flow were identified.
Signed-off-by: Luis Oliveira <lolivei@synopsys.com>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c/busses/i2c-designware-platdrv.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-designware-platdrv.c | 31 |
1 files changed, 18 insertions, 13 deletions
diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c index 613dfb88307f..fd14b410369e 100644 --- a/drivers/i2c/busses/i2c-designware-platdrv.c +++ b/drivers/i2c/busses/i2c-designware-platdrv.c @@ -172,6 +172,23 @@ static inline int dw_i2c_acpi_configure(struct platform_device *pdev) } #endif +static void i2c_dw_configure_master(struct dw_i2c_dev *dev) +{ + dev->master_cfg = DW_IC_CON_MASTER | DW_IC_CON_SLAVE_DISABLE | + DW_IC_CON_RESTART_EN; + + switch (dev->clk_freq) { + case 100000: + dev->master_cfg |= DW_IC_CON_SPEED_STD; + break; + case 3400000: + dev->master_cfg |= DW_IC_CON_SPEED_HIGH; + break; + default: + dev->master_cfg |= DW_IC_CON_SPEED_FAST; + } +} + static int i2c_dw_plat_prepare_clk(struct dw_i2c_dev *i_dev, bool prepare) { if (IS_ERR(i_dev->clk)) @@ -287,19 +304,7 @@ static int dw_i2c_plat_probe(struct platform_device *pdev) 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; - - switch (dev->clk_freq) { - case 100000: - dev->master_cfg |= DW_IC_CON_SPEED_STD; - break; - case 3400000: - dev->master_cfg |= DW_IC_CON_SPEED_HIGH; - break; - default: - dev->master_cfg |= DW_IC_CON_SPEED_FAST; - } + i2c_dw_configure_master(dev); dev->clk = devm_clk_get(&pdev->dev, NULL); if (!i2c_dw_plat_prepare_clk(dev, true)) { |