Re: [PATCH 3/7] i2c-eg20t: delete 10bit access processing

From: Tomoya MORINAGA
Date: Mon Sep 26 2011 - 20:05:24 EST


(2011/09/23 2:49), Jeffrey (Sheng-Hui) Chu wrote:
The device is BCM20791. Please contact Aaron Smith (aarons@xxxxxxxxxxxx) for evaluation.
Though googling the device, I can't find the device.
Broadcom website too.


By the way, the existing handling of 10-bit address in the patch you intended to delete does not work. You'll need to fix that before you can test with the device successfully.

For the write operation, it's a easy fix:

@@ -410,25 +408,16 @@ static s32 pch_i2c_writebytes(struct i2c_adapter *i2c_adap,
}

if (msgs->flags& I2C_M_TEN) {
- addr_2_msb = ((addr& I2C_MSB_2B_MSK)>> 7);
+ addr_2_msb = ((addr& I2C_MSB_2B_MSK)>> 7)& 0x06;


For the read operation, static s32 pch_i2c_readbytes(), you'll need to do a write followed by a restart and a read... please refer to the i2c spec...

Regards,

Thank you for your indication.
We will update this after supporting 10bit access.

Thanks,
tomoya
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