diff options
| author |   Phil Reid <preid@electromag.com.au> | 2017-11-02 10:40:25 +0800 |
|---|---|---|
| committer |   Wolfram Sang <wsa@the-dreams.de> | 2017-11-27 18:39:22 +0100 |
| commit | a34a0b6da22540d19e578131bbb60994892473d3 (patch) | |
| tree | 068d5c5fb1edf42aa33a1f4cd2402682a8dc7ee5 /drivers/i2c | |
| parent | i2c: Switch to using gpiod interface for gpio bus recovery (diff) | |
| download | linux-dev-a34a0b6da22540d19e578131bbb60994892473d3.tar.xz linux-dev-a34a0b6da22540d19e578131bbb60994892473d3.zip | |
i2c: designware: move i2c_dw_plat_prepare_clk to common
Move the i2c_dw_plat_prepare_clk funciton to common file in preparation
for its use also by the master driver.
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Phil Reid <preid@electromag.com.au>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-designware-common.c | 13 | ||||
| -rw-r--r-- | drivers/i2c/busses/i2c-designware-core.h | 1 | ||||
| -rw-r--r-- | drivers/i2c/busses/i2c-designware-platdrv.c | 12 |
3 files changed, 14 insertions, 12 deletions
diff --git a/drivers/i2c/busses/i2c-designware-common.c b/drivers/i2c/busses/i2c-designware-common.c index d1a69372432f..b79f34245930 100644 --- a/drivers/i2c/busses/i2c-designware-common.c +++ b/drivers/i2c/busses/i2c-designware-common.c @@ -21,6 +21,7 @@ * ---------------------------------------------------------------------------- * */ +#include <linux/clk.h> #include <linux/delay.h> #include <linux/export.h> #include <linux/errno.h> @@ -185,6 +186,18 @@ unsigned long i2c_dw_clk_rate(struct dw_i2c_dev *dev) return dev->get_clk_rate_khz(dev); } +int i2c_dw_plat_prepare_clk(struct dw_i2c_dev *i_dev, bool prepare) +{ + if (IS_ERR(i_dev->clk)) + return PTR_ERR(i_dev->clk); + + if (prepare) + return clk_prepare_enable(i_dev->clk); + + clk_disable_unprepare(i_dev->clk); + return 0; +} + int i2c_dw_acquire_lock(struct dw_i2c_dev *dev) { int ret; diff --git a/drivers/i2c/busses/i2c-designware-core.h b/drivers/i2c/busses/i2c-designware-core.h index 21bf619a86c5..e80a14c40347 100644 --- a/drivers/i2c/busses/i2c-designware-core.h +++ b/drivers/i2c/busses/i2c-designware-core.h @@ -301,6 +301,7 @@ u32 i2c_dw_scl_lcnt(u32 ic_clk, u32 tLOW, u32 tf, int offset); void __i2c_dw_enable(struct dw_i2c_dev *dev, bool enable); void __i2c_dw_enable_and_wait(struct dw_i2c_dev *dev, bool enable); unsigned long i2c_dw_clk_rate(struct dw_i2c_dev *dev); +int i2c_dw_plat_prepare_clk(struct dw_i2c_dev *i_dev, bool prepare); int i2c_dw_acquire_lock(struct dw_i2c_dev *dev); void i2c_dw_release_lock(struct dw_i2c_dev *dev); int i2c_dw_wait_bus_not_busy(struct dw_i2c_dev *dev); diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c index 293f586d78d2..6a3fd8d7c273 100644 --- a/drivers/i2c/busses/i2c-designware-platdrv.c +++ b/drivers/i2c/busses/i2c-designware-platdrv.c @@ -203,18 +203,6 @@ static void i2c_dw_configure_slave(struct dw_i2c_dev *dev) dev->mode = DW_IC_SLAVE; } -static int i2c_dw_plat_prepare_clk(struct dw_i2c_dev *i_dev, bool prepare) -{ - if (IS_ERR(i_dev->clk)) - return PTR_ERR(i_dev->clk); - - if (prepare) - return clk_prepare_enable(i_dev->clk); - - clk_disable_unprepare(i_dev->clk); - return 0; -} - static void dw_i2c_set_fifo_size(struct dw_i2c_dev *dev, int id) { u32 param, tx_fifo_depth, rx_fifo_depth; |