diff options
Diffstat (limited to 'target/linux/ipq40xx/patches-4.14/088-0009-i2c-qup-change-completion-timeout-according-to-trans.patch')
| -rw-r--r-- | target/linux/ipq40xx/patches-4.14/088-0009-i2c-qup-change-completion-timeout-according-to-trans.patch | 61 |
1 files changed, 0 insertions, 61 deletions
diff --git a/target/linux/ipq40xx/patches-4.14/088-0009-i2c-qup-change-completion-timeout-according-to-trans.patch b/target/linux/ipq40xx/patches-4.14/088-0009-i2c-qup-change-completion-timeout-according-to-trans.patch deleted file mode 100644 index c95d20ec97..0000000000 --- a/target/linux/ipq40xx/patches-4.14/088-0009-i2c-qup-change-completion-timeout-according-to-trans.patch +++ /dev/null @@ -1,61 +0,0 @@ -From ecb6e1e5f4352055a5761b945a833a925d51bf8d Mon Sep 17 00:00:00 2001 -From: Abhishek Sahu <absahu@codeaurora.org> -Date: Mon, 12 Mar 2018 18:44:58 +0530 -Subject: [PATCH 09/13] i2c: qup: change completion timeout according to - transfer length - -Currently the completion timeout is being taken according to -maximum transfer length which is too high if SCL is operating in -high frequency. This patch calculates timeout on the basis of -one-byte transfer time and uses the same for completion timeout. - -Signed-off-by: Abhishek Sahu <absahu@codeaurora.org> -Reviewed-by: Andy Gross <andy.gross@linaro.org> -Signed-off-by: Wolfram Sang <wsa@the-dreams.de> ---- - drivers/i2c/busses/i2c-qup.c | 13 ++++++++++--- - 1 file changed, 10 insertions(+), 3 deletions(-) - ---- a/drivers/i2c/busses/i2c-qup.c -+++ b/drivers/i2c/busses/i2c-qup.c -@@ -121,8 +121,12 @@ - #define MX_TX_RX_LEN SZ_64K - #define MX_BLOCKS (MX_TX_RX_LEN / QUP_READ_LIMIT) - --/* Max timeout in ms for 32k bytes */ --#define TOUT_MAX 300 -+/* -+ * Minimum transfer timeout for i2c transfers in seconds. It will be added on -+ * the top of maximum transfer time calculated from i2c bus speed to compensate -+ * the overheads. -+ */ -+#define TOUT_MIN 2 - - /* Default values. Use these if FW query fails */ - #define DEFAULT_CLK_FREQ 100000 -@@ -163,6 +167,7 @@ struct qup_i2c_dev { - int in_blk_sz; - - unsigned long one_byte_t; -+ unsigned long xfer_timeout; - struct qup_i2c_block blk; - - struct i2c_msg *msg; -@@ -849,7 +854,7 @@ static int qup_i2c_bam_do_xfer(struct qu - dma_async_issue_pending(qup->brx.dma); - } - -- if (!wait_for_completion_timeout(&qup->xfer, TOUT_MAX * HZ)) { -+ if (!wait_for_completion_timeout(&qup->xfer, qup->xfer_timeout)) { - dev_err(qup->dev, "normal trans timed out\n"); - ret = -ETIMEDOUT; - } -@@ -1605,6 +1610,8 @@ nodma: - */ - one_bit_t = (USEC_PER_SEC / clk_freq) + 1; - qup->one_byte_t = one_bit_t * 9; -+ qup->xfer_timeout = TOUT_MIN * HZ + -+ usecs_to_jiffies(MX_TX_RX_LEN * qup->one_byte_t); - - dev_dbg(qup->dev, "IN:block:%d, fifo:%d, OUT:block:%d, fifo:%d\n", - qup->in_blk_sz, qup->in_fifo_sz, |