[PATCH v5 5/6] i2c: at91: print hardware version

Cyrille Pitchen
2015-06-03T16:27:46Z

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 | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/i2c/busses/i2c-at91.c b/drivers/i2c/busses/i2c-at91.c
index 67b4f15..89a8e61 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;
@@ -908,7 +910,8 @@ static int at91_twi_probe(struct platform_device *pdev)
return rc;
}

- dev_info(dev->dev, "AT91 i2c bus driver.\n");
+ dev_info(dev->dev, "AT91 i2c bus driver (version: %#x).\n",
+ at91_twi_read(dev, AT91_TWI_VER));
return 0;
}

--
1.8.2.2