| Message ID | 03bf4d8906d12a87fee7238764074bc5687972be.1433321260.git.cyrille.pitchen@atmel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Wed, Jun 03, 2015 at 11:04:26AM +0200, Cyrille Pitchen wrote: > The probe() function now prints the hardware version of the I2C > controller. > > Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com> Kernel has already very much printout, so I don't see the gain in adding another one. At least, combine it with the other printout we have already, but I wonder what new information will be in here? We should know from the compatible binding which version we serve? Is it really needed? Helpful for the user? > --- > drivers/i2c/busses/i2c-at91.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/drivers/i2c/busses/i2c-at91.c b/drivers/i2c/busses/i2c-at91.c > index 67b4f15..cbe6684 100644 > --- a/drivers/i2c/busses/i2c-at91.c > +++ b/drivers/i2c/busses/i2c-at91.c > @@ -85,6 +85,8 @@ > #define AT91_TWI_ACR_DATAL(len) ((len) & 0xff) > #define AT91_TWI_ACR_DIR BIT(8) > > +#define AT91_TWI_VER 0x00fc /* Version Register */ > + > struct at91_twi_pdata { > unsigned clk_max_div; > unsigned clk_offset; > @@ -872,6 +874,8 @@ static int at91_twi_probe(struct platform_device *pdev) > return rc; > } > > + dev_info(dev->dev, "version: %#x\n", at91_twi_read(dev, AT91_TWI_VER)); > + > rc = of_property_read_u32(dev->dev->of_node, "clock-frequency", > &bus_clk_rate); > if (rc) > -- > 1.8.2.2 >
diff --git a/drivers/i2c/busses/i2c-at91.c b/drivers/i2c/busses/i2c-at91.c index 67b4f15..cbe6684 100644 --- a/drivers/i2c/busses/i2c-at91.c +++ b/drivers/i2c/busses/i2c-at91.c @@ -85,6 +85,8 @@ #define AT91_TWI_ACR_DATAL(len) ((len) & 0xff) #define AT91_TWI_ACR_DIR BIT(8) +#define AT91_TWI_VER 0x00fc /* Version Register */ + struct at91_twi_pdata { unsigned clk_max_div; unsigned clk_offset; @@ -872,6 +874,8 @@ static int at91_twi_probe(struct platform_device *pdev) return rc; } + dev_info(dev->dev, "version: %#x\n", at91_twi_read(dev, AT91_TWI_VER)); + rc = of_property_read_u32(dev->dev->of_node, "clock-frequency", &bus_clk_rate); if (rc)
The probe() function now prints the hardware version of the I2C controller. Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com> --- drivers/i2c/busses/i2c-at91.c | 4 ++++ 1 file changed, 4 insertions(+)