Hi Ivan, > -----Original Message----- > From: Ivan T. Ivanov [mailto:iivanov@xxxxxxxxxx] > Sent: Monday, July 20, 2015 4:53 PM > To: Sricharan R > Cc: devicetree@xxxxxxxxxxxxxxx; linux-arm-msm@xxxxxxxxxxxxxxx; > galak@xxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; linux- > i2c@xxxxxxxxxxxxxxx; agross@xxxxxxxxxxxxxx; dmaengine@xxxxxxxxxxxxxxx; > linux-arm-kernel@xxxxxxxxxxxxxxxxxxx > Subject: Re: [PATCH V4 4/7] i2c: qup: Transfer each i2c_msg in i2c_msgs > without a stop bit > > > Hi, > > On Thu, 2015-07-09 at 08:55 +0530, Sricharan R wrote: > > <snip> > > > #define ONE_BYTE 0x1 > > +#define QUP_I2C_MX_CONFIG_DURING_RUN BIT(31) > > > > struct qup_i2c_block { > > int count; > > @@ -121,6 +122,7 @@ struct qup_i2c_block { > > int rx_tag_len; > > int data_len; > > u8 tags[6]; > > + int config_run; > > This is not directly related to "block" control logic, right? > Could it made part of qup_i2c_dev structure? > Yes, can move it there. > > }; > > > > struct qup_i2c_dev { > > @@ -152,6 +154,10 @@ struct qup_i2c_dev { > > > > int (*qup_i2c_write_one)(struct qup_i2c_dev *qup, > > struct i2c_msg *msg); > > + /* Current i2c_msg in i2c_msgs */ > > + int cmsg; > > + /* total num of i2c_msgs */ > > + int num; > > I think it will be simpler with just "bool is_last" evaluated in main xfer loop. Hmm ok. Will change it that way. Set it one place and use it other places. > > <snip> > > > > > @@ -374,6 +383,9 @@ static void qup_i2c_get_blk_data(struct > qup_i2c_dev *qup, > > /* There are 2 tag bytes that are read in to fifo for every block */ > > if (msg->flags & I2C_M_RD) > > qup->blk.rx_tag_len = qup->blk.count * 2; > > + > > + if (qup->cmsg) > > + qup->blk.config_run = QUP_I2C_MX_CONFIG_DURING_RUN; > > This could be moved to qup_i2c_xfer_v2() to avoid repeatedly setting it. Ok, correct. Regards, Sricharan -- To unsubscribe from this list: send the line "unsubscribe dmaengine" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
