Messages in this thread |  | | | From | <> | | Date | Mon, 14 Mar 2011 16:59:53 +0200 | | Subject | RE: [PATCH] NFC: Driver for Inside Secure MicroRead NFC chip |
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Hi Arnd,
>Oh, I see you simply do > > ret = i2c_master_send(client, info->buf, len); > usleep_range(1000, 10000); > >and assume that the buffer can always be written within a >milisecond, so you just slow down output enough to never have >to worry about it, right? > >A nicer solution would be to have an interrupt driven output >so you know when the i2c buffers have been flushed.
Well, I get the idea of interrupt driven output, but as I have little linux kernel experience I'm not sure how to implement this. Can you extend you thoughts or if you know piont me a driver which uses that concept?
I'm not sure who should rise an interrupt when data has been flushed. I2c core or the chip itself? What's more, I guess the i2c_master_send is a synchronous call and when it returnes we know it flushed data. Right?
/Waldek
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