On Tuesday, September 13, 2011 18:26:19 Marek Vasut wrote: > +int spi_claim_bus(struct spi_slave *slave) > +{ > + struct mxs_spi_slave *mxs_slave = to_mxs_slave(slave); > + struct mx28_ssp_regs *ssp_regs = mxs_slave->regs; > + uint32_t reg = 0; > + > + mx28_reset_block(&ssp_regs->hw_ssp_ctrl0_reg); > + > + writel(SSP_CTRL0_BUS_WIDTH_ONE_BIT, &ssp_regs->hw_ssp_ctrl0); > + > + reg = SSP_CTRL1_SSP_MODE_SPI | SSP_CTRL1_WORD_LENGTH_EIGHT_BITS; > + reg |= (mxs_slave->mode & SPI_CPOL) ? SSP_CTRL1_POLARITY : 0; > + reg |= (mxs_slave->mode & SPI_CPHA) ? SSP_CTRL1_PHASE : 0; > + writel(reg, &ssp_regs->hw_ssp_ctrl1); > + > + writel(0, &ssp_regs->hw_ssp_cmd0); > + > + mx28_set_ssp_busclock(slave->bus, mxs_slave->max_khz);
this turns on the hardware ... > +void spi_release_bus(struct spi_slave *slave) > +{ > +} ... so shouldn't this turn it off ? i dont have the datasheet for the controller, so i have no idea :) -mike
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