From: Ming Huang <ming.huang@linaro.org>
To: leif.lindholm@linaro.org, linaro-uefi@lists.linaro.org,
edk2-devel@lists.01.org, graeme.gregory@linaro.org
Cc: ard.biesheuvel@linaro.org, michael.d.kinney@intel.com,
lersek@redhat.com, guoheyi@huawei.com, wanghuiqiang@huawei.com,
huangming23@huawei.com, zhangjinsong2@huawei.com,
huangdaode@hisilicon.com, john.garry@huawei.com,
xinliang.liu@linaro.org, Ming Huang <ming.huang@linaro.org>
Subject: [PATCH edk2-platforms v4 03/31] Silicon/Hisilicon: Fix I2CLib enable fail issue
Date: Fri, 24 Aug 2018 00:07:15 +0800 [thread overview]
Message-ID: <20180823160743.45638-4-ming.huang@linaro.org> (raw)
In-Reply-To: <20180823160743.45638-1-ming.huang@linaro.org>
I2C may enable failed in D06, so retry I2C enable while
enable failed.
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ming Huang <ming.huang@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
---
Silicon/Hisilicon/Library/I2CLib/I2CLib.c | 22 +++++++++++++-------
1 file changed, 14 insertions(+), 8 deletions(-)
diff --git a/Silicon/Hisilicon/Library/I2CLib/I2CLib.c b/Silicon/Hisilicon/Library/I2CLib/I2CLib.c
index 3cf5ff3d14..e3d9906135 100644
--- a/Silicon/Hisilicon/Library/I2CLib/I2CLib.c
+++ b/Silicon/Hisilicon/Library/I2CLib/I2CLib.c
@@ -86,6 +86,7 @@ I2C_Enable (
{
I2C0_ENABLE_U I2cEnableReg;
I2C0_ENABLE_STATUS_U I2cEnableStatusReg;
+ UINT32 TimeCnt = I2C_READ_TIMEOUT;
UINTN Base = GetI2cBase (Socket, Port);
@@ -93,13 +94,18 @@ I2C_Enable (
I2cEnableReg.bits.enable = 1;
I2C_REG_WRITE (Base + I2C_ENABLE_OFFSET, I2cEnableReg.Val32);
+ do {
+ // This is a empirical value for I2C delay. MemoryFence is no need here.
+ I2C_Delay (10000);
- I2C_REG_READ (Base + I2C_ENABLE_STATUS_OFFSET, I2cEnableStatusReg.Val32);
- if (I2cEnableStatusReg.bits.ic_en == 1) {
- return EFI_SUCCESS;
- } else {
- return EFI_DEVICE_ERROR;
- }
+ TimeCnt--;
+ I2C_REG_READ (Base + I2C_ENABLE_STATUS_OFFSET, I2cEnableStatusReg.Val32);
+ if (TimeCnt == 0) {
+ return EFI_DEVICE_ERROR;
+ }
+ } while (I2cEnableStatusReg.bits.ic_en == 0);
+
+ return EFI_SUCCESS;
}
VOID
@@ -252,7 +258,7 @@ CheckI2CTimeOut (
if (Transfer == I2CTx) {
Fifo = I2C_GetTxStatus (Socket, Port);
while (Fifo != 0) {
- // This is a empirical value for I2C delay. MemoryFance is no need here.
+ // This is a empirical value for I2C delay. MemoryFence is no need here.
I2C_Delay (2);
if (++Times > I2C_READ_TIMEOUT) {
(VOID)I2C_Disable (Socket, Port);
@@ -263,7 +269,7 @@ CheckI2CTimeOut (
} else {
Fifo = I2C_GetRxStatus (Socket, Port);
while (Fifo == 0) {
- // This is a empirical value for I2C delay. MemoryFance is no need here.
+ // This is a empirical value for I2C delay. MemoryFence is no need here.
I2C_Delay (2);
if (++Times > I2C_READ_TIMEOUT) {
(VOID)I2C_Disable (Socket, Port);
--
2.18.0
next prev parent reply other threads:[~2018-08-23 16:08 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-23 16:07 [PATCH edk2-platforms v4 00/31] Upload for D06 platform Ming Huang
2018-08-23 16:07 ` [PATCH edk2-platforms v4 01/31] Silicon/Hisilicon/Acpi: Move some macro to PlatformArch.h Ming Huang
2018-08-30 18:29 ` Leif Lindholm
2018-08-23 16:07 ` [PATCH edk2-platforms v4 02/31] Silicon/Hisilicon/D0x: Move RAS " Ming Huang
2018-08-30 18:29 ` Leif Lindholm
2018-08-23 16:07 ` Ming Huang [this message]
2018-08-23 16:07 ` [PATCH edk2-platforms v4 04/31] Silicon/Hisilicon: Add I2CLib delay for HNS auto config Ming Huang
2018-08-23 16:07 ` [PATCH edk2-platforms v4 05/31] Silicon/Hisilicon: Optimize I2CLib for HNS config CDR time Ming Huang
2018-08-23 16:07 ` [PATCH edk2-platforms v4 06/31] Hisilicon/D06: Add several base file for D06 Ming Huang
2018-08-30 18:14 ` Leif Lindholm
2018-08-23 16:07 ` [PATCH edk2-platforms v4 07/31] Platform/Hisilicon/D06: Add M41T83RealTimeClockLib Ming Huang
2018-08-30 19:00 ` Leif Lindholm
2018-08-23 16:07 ` [PATCH edk2-platforms v4 08/31] Platform/Hisilicon/D06: Add edk2-non-osi components for D06 Ming Huang
2018-08-30 18:59 ` Leif Lindholm
2018-08-23 16:07 ` [PATCH edk2-platforms v4 09/31] Hisilicon/D06: Add OemMiscLibD06 Ming Huang
2018-08-23 16:07 ` [PATCH edk2-platforms v4 10/31] Silicon/Hisilicon/D06: Wait for all disk ready Ming Huang
2018-08-30 16:51 ` Leif Lindholm
2018-08-23 16:07 ` [PATCH edk2-platforms v4 11/31] Silicon/Hisilicon/Acpi: Unify HisiAcpiPlatformDxe Ming Huang
2018-08-30 18:39 ` Leif Lindholm
2018-08-31 2:12 ` Ming
2018-08-23 16:07 ` [PATCH edk2-platforms v4 12/31] Hisilicon/D06: Add Debug Serial Port Init Driver Ming Huang
2018-08-23 16:07 ` [PATCH edk2-platforms v4 13/31] Hisilicon/D06: Add ACPI Tables for D06 Ming Huang
2018-08-23 16:07 ` [PATCH edk2-platforms v4 14/31] Hisilicon/D06: Add Hi1620OemConfigUiLib Ming Huang
2018-08-30 18:58 ` Leif Lindholm
2018-08-23 16:07 ` [PATCH edk2-platforms v4 15/31] Silicon/Hisilicon/D06: Stop watchdog Ming Huang
2018-08-23 16:07 ` [PATCH edk2-platforms v4 16/31] Silicon/Hisilicon/Setup: Add Setup Item "EnableGOP" Ming Huang
2018-08-30 18:41 ` Leif Lindholm
2018-08-23 16:07 ` [PATCH edk2-platforms v4 17/31] Hisilicon/Hi1620: Add ACPI PPTT table Ming Huang
2018-08-23 16:07 ` [PATCH edk2-platforms v4 18/31] Platform/Hisilicon/D06: Enable ACPI PPTT Ming Huang
2018-08-23 16:07 ` [PATCH edk2-platforms v4 19/31] Platform/Hisilicon/D06: Add OemNicLib Ming Huang
2018-08-30 18:45 ` Leif Lindholm
2018-08-23 16:07 ` [PATCH edk2-platforms v4 20/31] Platform/Hisilicon/D06: Add OemNicConfig2P Driver Ming Huang
2018-08-23 16:07 ` [PATCH edk2-platforms v4 21/31] Hisilicon/D0x: Update SMBIOS type9 info Ming Huang
2018-08-23 16:07 ` [PATCH edk2-platforms v4 22/31] Platform/Hisilicon/D06: Add EarlyConfigPeim peim Ming Huang
2018-08-23 16:07 ` [PATCH edk2-platforms v4 23/31] Platform/Hisilicon/D06: Add PciHostBridgeLib Ming Huang
2018-08-23 16:07 ` [PATCH edk2-platforms v4 24/31] Hisilicon/D06: add apei driver Ming Huang
2018-08-30 18:47 ` Leif Lindholm
2018-08-23 16:07 ` [PATCH edk2-platforms v4 25/31] Platform/Hisilicon/D06: Add capsule upgrade support Ming Huang
2018-08-30 18:49 ` Leif Lindholm
2018-08-23 16:07 ` [PATCH edk2-platforms v4 26/31] Silicon/Hisilicon: Modify for close slave core clock Ming Huang
2018-08-30 18:50 ` Leif Lindholm
2018-08-23 16:07 ` [PATCH edk2-platforms v4 27/31] Silicon/Hisilicon: Add I2C Bus Exception handle function Ming Huang
2018-08-30 18:51 ` Leif Lindholm
2018-08-23 16:07 ` [PATCH edk2-platforms v4 28/31] Silicon/Hisilicon/Setup: Support SPCR table switch Ming Huang
2018-08-30 18:52 ` Leif Lindholm
2018-08-23 16:07 ` [PATCH edk2-platforms v4 29/31] Silicon/Hisilicon/setup: Enable/disable SMMU Ming Huang
2018-08-30 18:55 ` Leif Lindholm
2018-08-23 16:07 ` [PATCH edk2-platforms v4 30/31] Hisilicon/D06: Add PciPlatformLib Ming Huang
2018-08-30 16:15 ` Leif Lindholm
2018-08-31 6:17 ` Ming
2018-08-23 16:07 ` [PATCH edk2-platforms v4 31/31] Platform/Hisilicon/D0x: Update version string to 18.08 Ming Huang
2018-08-30 20:20 ` [PATCH edk2-platforms v4 00/31] Upload for D06 platform Leif Lindholm
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