From: Dirk Brandewie <[email protected]> With multiple I2C adapters possible in the system each running at (possibly) different speeds we need to move the controller configuration bit field to the adapter.
Signed-off-by: Dirk Brandewie <[email protected]> --- drivers/i2c/busses/i2c-designware-core.c | 4 ++-- drivers/i2c/busses/i2c-designware-core.h | 1 + drivers/i2c/busses/i2c-designware-pcidrv.c | 1 + drivers/i2c/busses/i2c-designware-platdrv.c | 2 ++ 4 files changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/i2c/busses/i2c-designware-core.c b/drivers/i2c/busses/i2c-designware-core.c index 0bb0d2b..8d911e8 100644 --- a/drivers/i2c/busses/i2c-designware-core.c +++ b/drivers/i2c/busses/i2c-designware-core.c @@ -151,7 +151,7 @@ static u32 i2c_dw_scl_lcnt(u32 ic_clk, u32 tLOW, u32 tf, int offset) int i2c_dw_init(struct dw_i2c_dev *dev) { u32 input_clock_khz; - u32 ic_con, hcnt, lcnt; + u32 hcnt, lcnt; u32 reg; input_clock_khz = i2c_dw_clk_get_rate(dev); @@ -209,7 +209,7 @@ int i2c_dw_init(struct dw_i2c_dev *dev) /* configure the i2c master */ ic_con = DW_IC_CON_MASTER | DW_IC_CON_SLAVE_DISABLE | DW_IC_CON_RESTART_EN | DW_IC_CON_SPEED_FAST; - dw_writel(dev, ic_con, DW_IC_CON); + dw_writel(dev, dev->master_cfg , DW_IC_CON); return 0; } diff --git a/drivers/i2c/busses/i2c-designware-core.h b/drivers/i2c/busses/i2c-designware-core.h index 88c5aa1..8d715b9 100644 --- a/drivers/i2c/busses/i2c-designware-core.h +++ b/drivers/i2c/busses/i2c-designware-core.h @@ -183,6 +183,7 @@ struct dw_i2c_dev { int swab; struct i2c_adapter adapter; u32 functionality; + u32 master_cfg; unsigned int tx_fifo_depth; unsigned int rx_fifo_depth; }; diff --git a/drivers/i2c/busses/i2c-designware-pcidrv.c b/drivers/i2c/busses/i2c-designware-pcidrv.c index 7db115c..f548064 100644 --- a/drivers/i2c/busses/i2c-designware-pcidrv.c +++ b/drivers/i2c/busses/i2c-designware-pcidrv.c @@ -205,6 +205,7 @@ const struct pci_device_id *id) I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA | I2C_FUNC_SMBUS_I2C_BLOCK; + dev->master_cfg = controller->bus_cfg; pci_set_drvdata(pdev, dev); diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c index 55f1ce4..964494e 100644 --- a/drivers/i2c/busses/i2c-designware-platdrv.c +++ b/drivers/i2c/busses/i2c-designware-platdrv.c @@ -97,6 +97,8 @@ static int __devinit dw_i2c_probe(struct platform_device *pdev) I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA | I2C_FUNC_SMBUS_I2C_BLOCK; + dev->master_cfg = DW_IC_CON_MASTER | DW_IC_CON_SLAVE_DISABLE | + DW_IC_CON_RESTART_EN | DW_IC_CON_SPEED_FAST; dev->base = ioremap(mem->start, resource_size(mem)); if (dev->base == NULL) { -- 1.7.3.4 -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
