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authorCyrille Pitchen <cyrille.pitchen@atmel.com>2015-06-09 19:22:18 +0300
committerWolfram Sang <wsa@the-dreams.de>2015-06-10 15:54:53 +0300
commit6ce461ea504b0c5eb011b1acccd38fdc28e812ad (patch)
tree48498eed01b830b5336098c8d91160f1014a630e /drivers/i2c
parent0ef6f3213dac48bbc71c98b5a2752db556f3e649 (diff)
downloadlinux-6ce461ea504b0c5eb011b1acccd38fdc28e812ad.tar.xz
i2c: at91: print hardware version
The probe() function now prints the hardware version of the I2C controller. Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com> [wsa: s/version/hw version/] for clarity] Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c')
-rw-r--r--drivers/i2c/busses/i2c-at91.c5
1 files changed, 4 insertions, 1 deletions
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;
}