From: Dirk Brandewie <dirk.brandewie@xxxxxxxxx>
The functionality of the adapter depends on the configuration of the
IP block at silicon compile time and is adapter specific.
Signed-off-by: Dirk Brandewie <dirk.brandewie@xxxxxxxxx>
---
drivers/i2c/busses/i2c-designware-core.c | 8 ++------
drivers/i2c/busses/i2c-designware-core.h | 1 +
drivers/i2c/busses/i2c-designware-pcidrv.c | 6 ++++++
drivers/i2c/busses/i2c-designware-platdrv.c | 8 ++++++++
4 files changed, 17 insertions(+), 6 deletions(-)
diff --git a/drivers/i2c/busses/i2c-designware-core.c b/drivers/i2c/busses/i2c-designware-core.c
index ba0683d..0bb0d2b 100644
--- a/drivers/i2c/busses/i2c-designware-core.c
+++ b/drivers/i2c/busses/i2c-designware-core.c
@@ -465,12 +465,8 @@ done:
u32 i2c_dw_func(struct i2c_adapter *adap)
{
- return I2C_FUNC_I2C |
- I2C_FUNC_10BIT_ADDR |
- I2C_FUNC_SMBUS_BYTE |
- I2C_FUNC_SMBUS_BYTE_DATA |
- I2C_FUNC_SMBUS_WORD_DATA |
- I2C_FUNC_SMBUS_I2C_BLOCK;
+ struct dw_i2c_dev *dev = i2c_get_adapdata(adap);
+ return dev->functionality;
}
static u32 i2c_dw_read_clear_intrbits(struct dw_i2c_dev *dev)
diff --git a/drivers/i2c/busses/i2c-designware-core.h b/drivers/i2c/busses/i2c-designware-core.h
index 596f069..88c5aa1 100644
--- a/drivers/i2c/busses/i2c-designware-core.h
+++ b/drivers/i2c/busses/i2c-designware-core.h
@@ -182,6 +182,7 @@ struct dw_i2c_dev {
int irq;
int swab;
struct i2c_adapter adapter;
+ u32 functionality;
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 7cef30a..7db115c 100644
--- a/drivers/i2c/busses/i2c-designware-pcidrv.c
+++ b/drivers/i2c/busses/i2c-designware-pcidrv.c
@@ -199,6 +199,12 @@ const struct pci_device_id *id)
dev->clk_khz = controller->clk_khz;
dev->base = base;
dev->dev = get_device(&pdev->dev);
+ dev->functionality =
+ I2C_FUNC_I2C |
+ I2C_FUNC_SMBUS_BYTE |
+ I2C_FUNC_SMBUS_BYTE_DATA |
+ I2C_FUNC_SMBUS_WORD_DATA |
+ I2C_FUNC_SMBUS_I2C_BLOCK;
pci_set_drvdata(pdev, dev);
diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c
index 9d10ae8..55f1ce4 100644
--- a/drivers/i2c/busses/i2c-designware-platdrv.c
+++ b/drivers/i2c/busses/i2c-designware-platdrv.c
@@ -90,6 +90,14 @@ static int __devinit dw_i2c_probe(struct platform_device *pdev)
}
clk_enable(dev->clk);
+ dev->functionality =
+ I2C_FUNC_I2C |
+ I2C_FUNC_10BIT_ADDR |
+ I2C_FUNC_SMBUS_BYTE |
+ I2C_FUNC_SMBUS_BYTE_DATA |
+ I2C_FUNC_SMBUS_WORD_DATA |
+ I2C_FUNC_SMBUS_I2C_BLOCK;
+
dev->base = ioremap(mem->start, resource_size(mem));
if (dev->base == NULL) {
dev_err(&pdev->dev, "failure mapping io resources\n");
--
1.7.3.4
--
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