Messages in this thread | | | From | Denis Efremov <> | Subject | [PATCH v3 0/4] Simplify PCIe hotplug indicator control | Date | Mon, 19 Aug 2019 19:06:39 +0300 |
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PCIe defines two optional hotplug indicators: a Power indicator and an Attention indicator. Both are controlled by the same register, and each can be on, off or blinking. The current interfaces (pciehp_green_led_{on,off,blink}() and pciehp_set_attention_status()) are non-uniform and require two register writes in many cases where we could do one.
This patchset introduces the new function pciehp_set_indicators(). It allows one to set two indicators with a single register write. All calls to previous interfaces (pciehp_green_led_* and pciehp_set_attention_status()) are replaced with a new one. Thus, the amount of duplicated code for setting indicators is reduced.
Changes in v3: - Changed pciehp_set_indicators() to work with existing PCI_EXP_SLTCTL_* macros - Reworked the inputs validation in pciehp_set_indicators() - Removed pciehp_set_attention_status() and pciehp_green_led_*() completely
Denis Efremov (4): PCI: pciehp: Add pciehp_set_indicators() to jointly set LED indicators PCI: pciehp: Switch LED indicators with a single write PCI: pciehp: Remove pciehp_set_attention_status() PCI: pciehp: Remove pciehp_green_led_{on,off,blink}()
drivers/pci/hotplug/pciehp.h | 5 +- drivers/pci/hotplug/pciehp_core.c | 7 ++- drivers/pci/hotplug/pciehp_ctrl.c | 31 +++++++----- drivers/pci/hotplug/pciehp_hpc.c | 82 ++++++++++--------------------- include/uapi/linux/pci_regs.h | 3 ++ 5 files changed, 54 insertions(+), 74 deletions(-)
-- 2.21.0
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