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authorLinus Torvalds <torvalds@linux-foundation.org>2014-12-03 17:27:07 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2014-12-03 17:27:07 -0500
commitebcd241a635c868b1f89abbfb4dd176ca5f81eba (patch)
treeecdfe92e5bcc5a8d0c104d9f57f6744ccca7f585
parent5dc626358f76e32c4f111904f165bb28e2b447c0 (diff)
parentccfc866356674cb3a61829d239c685af6e85f197 (diff)
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
-rw-r--r--drivers/i2c/busses/i2c-designware-core.c2
-rw-r--r--drivers/i2c/busses/i2c-omap.c10
2 files changed, 6 insertions, 6 deletions
diff --git a/drivers/i2c/busses/i2c-designware-core.c b/drivers/i2c/busses/i2c-designware-core.c
index edca99dbba23..23628b7bfb8d 100644
--- a/drivers/i2c/busses/i2c-designware-core.c
+++ b/drivers/i2c/busses/i2c-designware-core.c
@@ -359,7 +359,7 @@ int i2c_dw_init(struct dw_i2c_dev *dev)
359 } 359 }
360 360
361 /* Configure Tx/Rx FIFO threshold levels */ 361 /* Configure Tx/Rx FIFO threshold levels */
362 dw_writel(dev, dev->tx_fifo_depth - 1, DW_IC_TX_TL); 362 dw_writel(dev, dev->tx_fifo_depth / 2, DW_IC_TX_TL);
363 dw_writel(dev, 0, DW_IC_RX_TL); 363 dw_writel(dev, 0, DW_IC_RX_TL);
364 364
365 /* configure the i2c master */ 365 /* configure the i2c master */
diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
index 26942c159de1..277a2288d4a8 100644
--- a/drivers/i2c/busses/i2c-omap.c
+++ b/drivers/i2c/busses/i2c-omap.c
@@ -922,14 +922,12 @@ omap_i2c_isr_thread(int this_irq, void *dev_id)
922 if (stat & OMAP_I2C_STAT_NACK) { 922 if (stat & OMAP_I2C_STAT_NACK) {
923 err |= OMAP_I2C_STAT_NACK; 923 err |= OMAP_I2C_STAT_NACK;
924 omap_i2c_ack_stat(dev, OMAP_I2C_STAT_NACK); 924 omap_i2c_ack_stat(dev, OMAP_I2C_STAT_NACK);
925 break;
926 } 925 }
927 926
928 if (stat & OMAP_I2C_STAT_AL) { 927 if (stat & OMAP_I2C_STAT_AL) {
929 dev_err(dev->dev, "Arbitration lost\n"); 928 dev_err(dev->dev, "Arbitration lost\n");
930 err |= OMAP_I2C_STAT_AL; 929 err |= OMAP_I2C_STAT_AL;
931 omap_i2c_ack_stat(dev, OMAP_I2C_STAT_AL); 930 omap_i2c_ack_stat(dev, OMAP_I2C_STAT_AL);
932 break;
933 } 931 }
934 932
935 /* 933 /*
@@ -954,11 +952,13 @@ omap_i2c_isr_thread(int this_irq, void *dev_id)
954 if (dev->fifo_size) 952 if (dev->fifo_size)
955 num_bytes = dev->buf_len; 953 num_bytes = dev->buf_len;
956 954
957 omap_i2c_receive_data(dev, num_bytes, true); 955 if (dev->errata & I2C_OMAP_ERRATA_I207) {
958
959 if (dev->errata & I2C_OMAP_ERRATA_I207)
960 i2c_omap_errata_i207(dev, stat); 956 i2c_omap_errata_i207(dev, stat);
957 num_bytes = (omap_i2c_read_reg(dev,
958 OMAP_I2C_BUFSTAT_REG) >> 8) & 0x3F;
959 }
961 960
961 omap_i2c_receive_data(dev, num_bytes, true);
962 omap_i2c_ack_stat(dev, OMAP_I2C_STAT_RDR); 962 omap_i2c_ack_stat(dev, OMAP_I2C_STAT_RDR);
963 continue; 963 continue;
964 } 964 }