From 6ce461ea504b0c5eb011b1acccd38fdc28e812ad Mon Sep 17 00:00:00 2001 From: Cyrille Pitchen Date: Tue, 9 Jun 2015 18:22:18 +0200 Subject: [PATCH] i2c: at91: print hardware version The probe() function now prints the hardware version of the I2C controller. Signed-off-by: Cyrille Pitchen [wsa: s/version/hw version/] for clarity] Acked-by: Ludovic Desroches Signed-off-by: Wolfram Sang --- 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 817ae69cd1fb..abd93f3a05a0 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 (hw version: %#x).\n", + at91_twi_read(dev, AT91_TWI_VER)); return 0; }