On Mon, Feb 27, 2012 at 12:57 PM, Laxman Dewangan <ldewangan@xxxxxxxxxx> wrote: > On Monday 27 February 2012 12:51 PM, Shubhrajyoti Datta wrote: >> >> On Fri, Feb 24, 2012 at 5:01 PM, Viresh Kumar<viresh.kumar@xxxxxx> wrote: >>> >>> From: Vincenzo Frascino<vincenzo.frascino@xxxxxx> >>> >>> Add optional i2c_recover_bus() function to the Synopsys DesignWare I2C >>> adapter >>> driver that performs i2c bus recovery after timeout. The scope of this >>> routine >>> is to define i2c bus recovery procedure as specified in the i2c protocol >>> Rev. 03 >>> section 3.16 titled "Bus clear". >> >> What do you do in the function ? >> >> Could we have it in the driver file itself? >> > I think bus recovery mechanism is to send extra clock on SCL line by > toggling the pin (using gpio apis) You mean the SCL I didnt understand the gpio part? Why is gpio needed? and keep watching of sda line whether it > becomes high or not. > We can put this algorithms in the some common file (i2c/algos/) and so if > any i2c bus driver want to use, they can use it. > Little background: I am working on tegra i2c controller and we have similar > logic in tegra-i2c driver which we want to upstream. > If similar function is in common place, we can use this and need not to > duplicating it on every bus driver. > > -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
