lkml.org 
[lkml]   [2015]   [Jun]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v4 5/6] i2c: at91: print hardware version
Date
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(+)

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


\
 
 \ /
  Last update: 2015-06-03 11:21    [W:0.076 / U:0.112 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site