kernel/drivers/pinctrl/pinctrl-amd.h, branch linux-5.1.y

pinctrl/amd: fix gpio irq level in debugfs

2018-07-29T20:20:15Z

According to the AMD BKDG, the GPIO ActiveLevel bits (10:9) map to: 00 Active High 01 Active Low 10 Active on both edges iff LevelTrig (bit 8) == 0 11 Reserved The current code has a bug where it interprets 00 => Active Low, and 01 => Active High. Fix the bug, restrict "Active on both" to just the edge trigger case, and refactor a bit to make the logic more readable. Signed-off-by: Daniel Kurtz Signed-off-by: Linus Walleij

pinctrl/amd: save pin registers over suspend/resume

2017-09-12T13:58:45Z

The touchpad in the Asus laptop models X505BA/BP and X542BA/BP is unresponsive after suspend/resume. The following error appears during resume: i2c_hid i2c-ELAN1300:00: failed to reset device. The problem here is that i2c_hid does not notice the interrupt being generated at this point, because the GPIO is no longer configured for interrupts. Fix this by saving pinctrl-amd pin registers during suspend and restoring them at resume time. Based on code from pinctrl-intel. Cc: stable@vger.kernel.org Signed-off-by: Daniel Drake Signed-off-by: Linus Walleij

pinctrl: amd: make use of raw_spinlock variants

2017-03-16T15:39:15Z

The amd pinctrl drivers currently implement an irq_chip for handling interrupts; due to how irq_chip handling is done, it's necessary for the irq_chip methods to be invoked from hardirq context, even on a a real-time kernel. Because the spinlock_t type becomes a "sleeping" spinlock w/ RT kernels, it is not suitable to be used with irq_chips. A quick audit of the operations under the lock reveal that they do only minimal, bounded work, and are therefore safe to do under a raw spinlock. Signed-off-by: Julia Cartwright Signed-off-by: Linus Walleij

pinctrl: amd: Add support for additional GPIO

2016-12-28T12:26:09Z

This patch adds support for new Bank and adds IRQCHIP_SKIP_SET_WAKE flag. Reviewed-by: S-k, Shyam-sundar Signed-off-by: Nehal Shah Signed-off-by: Linus Walleij

Fix inconsistent spinlock of AMD GPIO driver which can be

2015-04-07T09:36:49Z

recognized by static analysis tool smatch. Declare constant Variables with Sparse's suggestion. Signed-off-by: Ken Xue Signed-off-by: Linus Walleij

pinctrl: add AMD GPIO driver support.

2015-03-18T01:02:21Z

KERNCZ GPIO is a new IP from AMD. it can be implemented in both x86 and ARM. Current driver patch only support GPIO in x86. Signed-off-by: Ken Xue [Moved back to header] Signed-off-by: Linus Walleij