From: "Chai, Chong Yi" <chong.yi.c...@intel.com> These patches are for enabling I2C features in Baytrail. The patches are targeted to merge into Yocto-kernel-cache on branch yocto-3.14.
01/10 [ Author: Maurice Petallo Email: mauricex.r.peta...@intel.com Date: Tue, 17 Feb 2015 13:21:01 +0800 Subject: [PATCH 042/164] i2c: allow Designware I2C to be probed before SMBus for Baytrail When SMBus is enabled in Baytrail, it is being probed first before all the Designware I2C devices. This means SMBus will take the first available bus id which is 0 and then the I2C devices will take the next succeeding bus ids. This should be fine as long as the I2C devices bus ids are assigned dynamically. The problem arises when the I2C devices' bus ids are assigned statically and the SMBus is probed first. The kernel will fail to add the i2c adapter because something else, which in that case is the SMBus, has taken the bus id that the i2c adapter is trying to take. As mentioned in commit "i2c: designware-pci: use static bus num allocation for baytrail", it is required for I2C devices' bus ids to be assigned statically for LPE Audio to register the i2c properly. To resolve this, we either force the SMBus to take the next bus id after all the designware I2C devices or we allow all the I2C devices to be probed first before the SMBus. This patch implements the 2nd. Signed-off-by: Maurice Petallo <mauricex.r.peta...@intel.com> ] 02/10 [ Author: Wan Ahmad Zainie Email: wan.ahmad.zainie.wan.moha...@intel.com Date: Wed, 29 Jul 2015 18:13:56 +0800 Subject: [PATCH 121/164] i2c: designware: cleanup irq handler setting Disable irq and clear any pending interrupts both in PCI and platform driver, do so before setting interrupt handler. Signed-off-by: Wan Ahmad Zainie <wan.ahmad.zainie.wan.moha...@intel.com> ] 03/10 [ Author: Wan Ahmad Zainie Email: wan.ahmad.zainie.wan.moha...@intel.com Date: Wed, 29 Jul 2015 18:14:05 +0800 Subject: [PATCH 122/164] i2c: designware: use hardware-provided Rx/Tx FIFO depths i2c-designware module provides information about actual Rx/Tx FIFO depths in COMP_PARAM1 register. Current driver uses these hardware-provided values only in case of non-ACPI platform device. For all other cases (which includes all Bay Trail cases) hardcoded value of 32 is used instead - which leads to suboptimal FIFO use. This patch switches to using hardware-provided values in all cases. Signed-off-by: Wan Ahmad Zainie <wan.ahmad.zainie.wan.moha...@intel.com> ] 04/10 [ Author: Wan Ahmad Zainie From: wan.ahmad.zainie.wan.moha...@intel.com Date: Wed, 29 Jul 2015 18:14:14 +0800 Subject: [PATCH 123/164] i2c: designware: use symbolic names for command bits Signed-off-by: Wan Ahmad Zainie <wan.ahmad.zainie.wan.moha...@intel.com> ] 05/10 [ Author: Wan Ahmad Zainie From: wan.ahmad.zainie.wan.moha...@intel.com Date: Wed, 29 Jul 2015 18:14:25 +0800 Subject: [PATCH 124/164] i2c: designware: cleanup __i2c_dw_enable() - Do not write boolean value to register (and implicitly depend on match between boolean representation and register bit position). - Do not implicitly depend on same bit position of enable bit in Enable and Enable Status registers. Signed-off-by: Wan Ahmad Zainie <wan.ahmad.zainie.wan.moha...@intel.com> ] 06/10 [ Author: Wan Ahmad Zainie From: wan.ahmad.zainie.wan.moha...@intel.com Date: Wed, 29 Jul 2015 18:14:34 +0800 Subject: [PATCH 125/164] i2c: designware: explicitly abort running operation on disable Failure to disable causes hard device hangs in some situations involving timeouts. Signed-off-by: Wan Ahmad Zainie <wan.ahmad.zainie.wan.moha...@intel.com> ] 07/10 [ Author: Wan Ahmad Zainie From: wan.ahmad.zainie.wan.moha...@intel.com Date: Wed, 29 Jul 2015 18:14:43 +0800 Subject: [PATCH 126/164] i2c: designware: improve FIFO performance There is no need to catch interrupt after every byte transmitted or received, as driver currently does. Hardware has deep FIFOs that allow much less software intervention. This patch reworks FIFO handling such that up to 3/4 of FIFO depth is processed per one interrupt. This results into significant decrease of number of interrupts and increase of performance. Signed-off-by: Wan Ahmad Zainie <wan.ahmad.zainie.wan.moha...@intel.com> ] 08/10 [ Author: Wan Ahmad Zainie From: wan.ahmad.zainie.wan.moha...@intel.com Date: Wed, 29 Jul 2015 18:14:53 +0800 Subject: [PATCH 127/164] i2c: designware: add per-channel speed parameter and fast-plus speed option This patch allows the I2C transfer speed to be configured via module parameter for each channel available. This patch also enable the Fast-mode Plus. Signed-off-by: Wan Ahmad Zainie <wan.ahmad.zainie.wan.moha...@intel.com> ] 09/10 [ Author: Wan Ahmad Zainie From: wan.ahmad.zainie.wan.moha...@intel.com Date: Wed, 29 Jul 2015 18:15:01 +0800 Subject: [PATCH 128/164] i2c: designware: add i2c high-speed support This patch enable the High-speed mode. Signed-off-by: Wan Ahmad Zainie <wan.ahmad.zainie.wan.moha...@intel.com> ] 10/10 [ Author: Wan Ahmad Zainie From: wan.ahmad.zainie.wan.moha...@intel.com Date: Fri, 21 Aug 2015 12:21:20 +0800 Subject: [PATCH 155/164] i2c: designware: Fix checkpatch.pl warnings This commit is to fix the result of running scripts/checkpatch.pl against 0127-i2c-designware-add-per-channel-speed-parameter-and-f.patch Signed-off-by: Wan Ahmad Zainie <wan.ahmad.zainie.wan.moha...@intel.com> ] Chai, Chong Yi (1): i2c: allow Designware I2C to be probed before SMBus for Baytrail features/soc/baytrail/baytrail.scc | 10 + ...esignware-I2C-to-be-probed-before-SMBus-f.patch | 54 ++++ ...i2c-designware-Fix-checkpatch.pl-warnings.patch | 51 ++++ ...i2c-designware-add-i2c-high-speed-support.patch | 234 +++++++++++++++ ...are-add-per-channel-speed-parameter-and-f.patch | 331 +++++++++++++++++++++ .../i2c-designware-cleanup-__i2c_dw_enable.patch | 54 ++++ ...2c-designware-cleanup-irq-handler-setting.patch | 53 ++++ ...are-explicitly-abort-running-operation-on.patch | 70 +++++ .../i2c-designware-improve-FIFO-performance.patch | 137 +++++++++ ...are-use-hardware-provided-Rx-Tx-FIFO-dept.patch | 220 ++++++++++++++ ...nware-use-symbolic-names-for-command-bits.patch | 50 ++++ 11 files changed, 1264 insertions(+) create mode 100644 features/soc/baytrail/i2c-allow-Designware-I2C-to-be-probed-before-SMBus-f.patch create mode 100644 features/soc/baytrail/i2c-designware-Fix-checkpatch.pl-warnings.patch create mode 100644 features/soc/baytrail/i2c-designware-add-i2c-high-speed-support.patch create mode 100644 features/soc/baytrail/i2c-designware-add-per-channel-speed-parameter-and-f.patch create mode 100644 features/soc/baytrail/i2c-designware-cleanup-__i2c_dw_enable.patch create mode 100644 features/soc/baytrail/i2c-designware-cleanup-irq-handler-setting.patch create mode 100644 features/soc/baytrail/i2c-designware-explicitly-abort-running-operation-on.patch create mode 100644 features/soc/baytrail/i2c-designware-improve-FIFO-performance.patch create mode 100644 features/soc/baytrail/i2c-designware-use-hardware-provided-Rx-Tx-FIFO-dept.patch create mode 100644 features/soc/baytrail/i2c-designware-use-symbolic-names-for-command-bits.patch -- 1.9.1 -- _______________________________________________ linux-yocto mailing list linux-yocto@yoctoproject.org https://lists.yoctoproject.org/listinfo/linux-yocto
