/* * Prepare controller for a transaction and call omap_i2c_xfer_msg * to do the work during IRQ processing. */ static int omap_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], int num) { struct omap_i2c_dev *dev = i2c_get_adapdata(adap); int i; int r; omap_i2c_enable_clocks(dev); /* REVISIT: initialize and use adap->retries. This is an optional * feature */ if ((r = omap_i2c_wait_for_bb(dev)) < 0) goto out; for (i = 0; i < num; i++) { r = omap_i2c_xfer_msg(adap, &msgs[i], (i == (num - 1))); if (r != 0) break; } if (r == 0) r = num; out: omap_i2c_disable_clocks(dev); return r; }
/* * Prepare controller for a transaction and call omap_i2c_xfer_msg * to do the work during IRQ processing. */ static int omap_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], int num) { struct omap_i2c_dev *dev = i2c_get_adapdata(adap); int i; int r; omap_i2c_enable_clocks(dev); if ((r = omap_i2c_wait_for_bb(dev)) < 0) goto out; for (i = 0; i < num; i++) { r = omap_i2c_xfer_msg(adap, &msgs[i], (i == (num - 1))); if (r != 0) break; } if (r == 0) r = num; out: omap_i2c_disable_clocks(dev); return r; }