Merge tag 'pinctrl-v4.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control updates from Linus Walleij:
 "This is the bulk of pin control changes for the v4.12 cycle.

  The extra week before the merge window actually resulted in some of
  the type of fixes that usually arrive after the merge window already
  starting to trickle in from eager developers using -next, I'm
  impressed.

  I have recruited a Samsung subsubsystem maintainer (Krzysztof) to deal
  with the onset of Samsung patches. It works great.

  Apart from that it is a boring round, just incremental updates and
  fixes all over the place, no serious core changes or anything exciting
  like that. The most pleasing to see is Julia Cartwrights work to audit
  the irqchip-providing drivers for realtime locking compliance. It's
  one of those "I should really get around to looking into that" things
  that have been on my TODO list since forever.

  Summary:

  Core changes:

   - add bi-directional and output-enable pin configurations to the
     generic bindings and generic pin controlling core.

  New drivers or subdrivers:

   - Armada 37xx SoC pin controller and GPIO support.

   - Axis ARTPEC-6 SoC pin controller support.

   - AllWinner A64 R_PIO controller support, and opening up the
     AllWinner sunxi driver for ARM64 use.

   - Rockchip RK3328 support.

   - Renesas R-Car H3 ES2.0 support.

   - STM32F469 support in the STM32 driver.

   - Aspeed G4 and G5 pin controller support.

  Improvements:

   - a whole slew of realtime improvements to drivers implementing
     irqchips: BCM, AMD, SiRF, sunxi, rockchip.

   - switch meson driver to get the GPIO ranges from the device tree.

   - input schmitt trigger support on the Rockchip driver.

   - enable the sunxi (AllWinner) driver to also be used on ARM64
     silicon.

   - name the Qualcomm QDF2xxx GPIO lines.

   - support GMMR GPIO regions on the Intel Cherryview. This fixes a
     serialization problem on these platforms.

   - pad retention support for the Samsung Exynos 5433.

   - handle suspend-to-ram in the AT91-pio4 driver.

   - pin configuration support in the Aspeed driver.

  Cleanups:

   - the final name of Rockchip RK1108 was RV1108 so rename the driver
     and variables to stay consistent"

* tag 'pinctrl-v4.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (80 commits)
  pinctrl: mediatek: Add missing pinctrl bindings for mt7623
  pinctrl: artpec6: Fix return value check in artpec6_pmx_probe()
  pinctrl: artpec6: Remove .owner field for driver
  pinctrl: tegra: xusb: Silence sparse warnings
  ARM: at91/at91-pinctrl documentation: fix spelling mistake: "contoller" -> "controller"
  pinctrl: make artpec6 explicitly non-modular
  pinctrl: aspeed: g5: Add pinconf support
  pinctrl: aspeed: g4: Add pinconf support
  pinctrl: aspeed: Add core pinconf support
  pinctrl: aspeed: Document pinconf in devicetree bindings
  pinctrl: Add st,stm32f469-pinctrl compatible to stm32-pinctrl
  pinctrl: stm32: Add STM32F469 MCU support
  Documentation: dt: Remove ngpios from stm32-pinctrl binding
  pinctrl: stm32: replace device_initcall() with arch_initcall()
  pinctrl: stm32: add possibility to use gpio-ranges to declare bank range
  pinctrl: armada-37xx: Add gpio support
  pinctrl: armada-37xx: Add pin controller support for Armada 37xx
  pinctrl: dt-bindings: Add documentation for Armada 37xx pin controllers
  pinctrl: core: Make pinctrl_init_controller() static
  pinctrl: generic: Add bi-directional and output-enable
  ...

1 files changed, 47 insertions, 0 deletions

diff --git a/drivers/pinctrl/intel/pinctrl-cherryview.c b/drivers/pinctrl/intel/pinctrl-cherryview.c
index 9ff790174906..2debba62fac9 100644
--- a/drivers/pinctrl/intel/pinctrl-cherryview.c
+++ b/drivers/pinctrl/intel/pinctrl-cherryview.c
@@ -149,6 +149,7 @@ struct chv_community {
 	size_t ngpio_ranges;
 	size_t ngpios;
 	size_t nirqs;
+	acpi_adr_space_type acpi_space_id;
 };
 
 struct chv_pin_context {
@@ -405,6 +406,7 @@ static const struct chv_community southwest_community = {
 	 * trigger GPEs.
 	 */
 	.nirqs = 8,
+	.acpi_space_id = 0x91,
 };
 
 static const struct pinctrl_pin_desc north_pins[] = {
@@ -494,6 +496,7 @@ static const struct chv_community north_community = {
 	 * GPEs.
 	 */
 	.nirqs = 8,
+	.acpi_space_id = 0x92,
 };
 
 static const struct pinctrl_pin_desc east_pins[] = {
@@ -537,6 +540,7 @@ static const struct chv_community east_community = {
 	.ngpio_ranges = ARRAY_SIZE(east_gpio_ranges),
 	.ngpios = ARRAY_SIZE(east_pins),
 	.nirqs = 16,
+	.acpi_space_id = 0x93,
 };
 
 static const struct pinctrl_pin_desc southeast_pins[] = {
@@ -663,6 +667,7 @@ static const struct chv_community southeast_community = {
 	.ngpio_ranges = ARRAY_SIZE(southeast_gpio_ranges),
 	.ngpios = ARRAY_SIZE(southeast_pins),
 	.nirqs = 16,
+	.acpi_space_id = 0x94,
 };
 
 static const struct chv_community *chv_communities[] = {
@@ -1608,11 +1613,34 @@ static int chv_gpio_probe(struct chv_pinctrl *pctrl, int irq)
 	return 0;
 }
 
+static acpi_status chv_pinctrl_mmio_access_handler(u32 function,
+	acpi_physical_address address, u32 bits, u64 *value,
+	void *handler_context, void *region_context)
+{
+	struct chv_pinctrl *pctrl = region_context;
+	unsigned long flags;
+	acpi_status ret = AE_OK;
+
+	raw_spin_lock_irqsave(&chv_lock, flags);
+
+	if (function == ACPI_WRITE)
+		chv_writel((u32)(*value), pctrl->regs + (u32)address);
+	else if (function == ACPI_READ)
+		*value = readl(pctrl->regs + (u32)address);
+	else
+		ret = AE_BAD_PARAMETER;
+
+	raw_spin_unlock_irqrestore(&chv_lock, flags);
+
+	return ret;
+}
+
 static int chv_pinctrl_probe(struct platform_device *pdev)
 {
 	struct chv_pinctrl *pctrl;
 	struct acpi_device *adev;
 	struct resource *res;
+	acpi_status status;
 	int ret, irq, i;
 
 	adev = ACPI_COMPANION(&pdev->dev);
@@ -1668,11 +1696,29 @@ static int chv_pinctrl_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
+	status = acpi_install_address_space_handler(adev->handle,
+					pctrl->community->acpi_space_id,
+					chv_pinctrl_mmio_access_handler,
+					NULL, pctrl);
+	if (ACPI_FAILURE(status))
+		dev_err(&pdev->dev, "failed to install ACPI addr space handler\n");
+
 	platform_set_drvdata(pdev, pctrl);
 
 	return 0;
 }
 
+static int chv_pinctrl_remove(struct platform_device *pdev)
+{
+	struct chv_pinctrl *pctrl = platform_get_drvdata(pdev);
+
+	acpi_remove_address_space_handler(ACPI_COMPANION(&pdev->dev),
+					  pctrl->community->acpi_space_id,
+					  chv_pinctrl_mmio_access_handler);
+
+	return 0;
+}
+
 #ifdef CONFIG_PM_SLEEP
 static int chv_pinctrl_suspend_noirq(struct device *dev)
 {
@@ -1780,6 +1826,7 @@ MODULE_DEVICE_TABLE(acpi, chv_pinctrl_acpi_match);
 
 static struct platform_driver chv_pinctrl_driver = {
 	.probe = chv_pinctrl_probe,
+	.remove = chv_pinctrl_remove,
 	.driver = {
 		.name = "cherryview-pinctrl",
 		.pm = &chv_pinctrl_pm_ops,