forked from Minki/linux
Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c bugfixes from Wolfram Sang: "A few driver bugfixes for 3.18" * 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: i2c: omap: fix i207 errata handling i2c: designware: prevent early stop on TX FIFO empty i2c: omap: fix NACK and Arbitration Lost irq handling
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commit
ebcd241a63
@ -359,7 +359,7 @@ int i2c_dw_init(struct dw_i2c_dev *dev)
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}
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/* Configure Tx/Rx FIFO threshold levels */
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dw_writel(dev, dev->tx_fifo_depth - 1, DW_IC_TX_TL);
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dw_writel(dev, dev->tx_fifo_depth / 2, DW_IC_TX_TL);
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dw_writel(dev, 0, DW_IC_RX_TL);
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/* configure the i2c master */
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@ -922,14 +922,12 @@ omap_i2c_isr_thread(int this_irq, void *dev_id)
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if (stat & OMAP_I2C_STAT_NACK) {
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err |= OMAP_I2C_STAT_NACK;
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omap_i2c_ack_stat(dev, OMAP_I2C_STAT_NACK);
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break;
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}
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if (stat & OMAP_I2C_STAT_AL) {
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dev_err(dev->dev, "Arbitration lost\n");
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err |= OMAP_I2C_STAT_AL;
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omap_i2c_ack_stat(dev, OMAP_I2C_STAT_AL);
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break;
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}
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/*
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@ -954,11 +952,13 @@ omap_i2c_isr_thread(int this_irq, void *dev_id)
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if (dev->fifo_size)
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num_bytes = dev->buf_len;
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omap_i2c_receive_data(dev, num_bytes, true);
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if (dev->errata & I2C_OMAP_ERRATA_I207)
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if (dev->errata & I2C_OMAP_ERRATA_I207) {
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i2c_omap_errata_i207(dev, stat);
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num_bytes = (omap_i2c_read_reg(dev,
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OMAP_I2C_BUFSTAT_REG) >> 8) & 0x3F;
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}
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omap_i2c_receive_data(dev, num_bytes, true);
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omap_i2c_ack_stat(dev, OMAP_I2C_STAT_RDR);
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continue;
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}
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