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| author | Ed Tanous <ed.tanous@intel.com> | 2019-08-19 21:16:19 +0300 |
|---|---|---|
| committer | Ed Tanous <ed@tanous.net> | 2019-08-20 18:56:17 +0300 |
| commit | 35e295e2a161fcf146ea031de53431b2888521fa (patch) | |
| tree | a0c78943fef5c085f371aaa840d46edecc1f2e95 /meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/0069-i2c-aspeed-add-SLAVE_ADDR_RECEIVED_PENDING-interrupt.patch | |
| parent | 9856ac69064742544fafad307d3ee4544385ffa2 (diff) | |
| download | openbmc-35e295e2a161fcf146ea031de53431b2888521fa.tar.xz | |
Sync to internal 8-19-2019
Signed-off-by: Ed Tanous <ed.tanous@intel.com>
Diffstat (limited to 'meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/0069-i2c-aspeed-add-SLAVE_ADDR_RECEIVED_PENDING-interrupt.patch')
| -rw-r--r-- | meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/0069-i2c-aspeed-add-SLAVE_ADDR_RECEIVED_PENDING-interrupt.patch | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/0069-i2c-aspeed-add-SLAVE_ADDR_RECEIVED_PENDING-interrupt.patch b/meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/0069-i2c-aspeed-add-SLAVE_ADDR_RECEIVED_PENDING-interrupt.patch new file mode 100644 index 000000000..dc38c81f3 --- /dev/null +++ b/meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/0069-i2c-aspeed-add-SLAVE_ADDR_RECEIVED_PENDING-interrupt.patch @@ -0,0 +1,50 @@ +From 085bde1e91d85435c44a752bd59d38cf31465518 Mon Sep 17 00:00:00 2001 +From: Jae Hyun Yoo <jae.hyun.yoo@intel.com> +Date: Thu, 11 Jul 2019 14:04:39 -0700 +Subject: [PATCH] i2c: aspeed: add SLAVE_ADDR_RECEIVED_PENDING interrupt + handling + +If a peer master sends messages too quickly before it processes +previous slave DMA data handling, this indicator will be set. It's +just a indicator and driver can't recover this case so just ignore +it. + +Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com> +--- + drivers/i2c/busses/i2c-aspeed.c | 13 +++++++++++++ + 1 file changed, 13 insertions(+) + +diff --git a/drivers/i2c/busses/i2c-aspeed.c b/drivers/i2c/busses/i2c-aspeed.c +index d41f377de9dc..46de9a01a0eb 100644 +--- a/drivers/i2c/busses/i2c-aspeed.c ++++ b/drivers/i2c/busses/i2c-aspeed.c +@@ -86,6 +86,7 @@ + * These share bit definitions, so use the same values for the enable & + * status bits. + */ ++#define ASPEED_I2CD_INTR_SLAVE_ADDR_RECEIVED_PENDING BIT(30) + #define ASPEED_I2CD_INTR_SLAVE_INACTIVE_TIMEOUT BIT(15) + #define ASPEED_I2CD_INTR_SDA_DL_TIMEOUT BIT(14) + #define ASPEED_I2CD_INTR_BUS_RECOVER_DONE BIT(13) +@@ -353,6 +354,18 @@ static u32 aspeed_i2c_slave_irq(struct aspeed_i2c_bus *bus, u32 irq_status) + dev_dbg(bus->dev, "slave irq status 0x%08x, cmd 0x%08x\n", + irq_status, command); + ++ /* ++ * If a peer master sends messages too quickly before it processes ++ * previous slave DMA data handling, this indicator will be set. It's ++ * just a indicator and driver can't recover this case so just ignore ++ * it. ++ */ ++ if (unlikely(irq_status & ++ ASPEED_I2CD_INTR_SLAVE_ADDR_RECEIVED_PENDING)) { ++ dev_dbg(bus->dev, "A slave addr match interrupt is pending.\n"); ++ irq_handled |= ASPEED_I2CD_INTR_SLAVE_ADDR_RECEIVED_PENDING; ++ } ++ + /* Slave was sent something. */ + if (irq_status & ASPEED_I2CD_INTR_RX_DONE) { + if (bus->dma_buf && +-- +2.7.4 + |