Integrate upstream patches to add interrupt support for X-Gene Standby GPIO. This will help support for features that require GPIO pin to be configured as interrupt pin like power/reset button.
Signed-off-by: Duc Dang dhdang@apm.com --- ...Enable-X-Gene-standby-GPIO-as-interrupt-c.patch | 366 +++++++++++++++++++++ ...enirq-Export-IRQ-functions-for-module-use.patch | 110 +++++++ SPECS/kernel-aarch64.spec | 9 +- 3 files changed, 484 insertions(+), 1 deletion(-) create mode 100644 SOURCES/1021-gpio-xgene-Enable-X-Gene-standby-GPIO-as-interrupt-c.patch create mode 100644 SOURCES/1022-genirq-Export-IRQ-functions-for-module-use.patch
diff --git a/SOURCES/1021-gpio-xgene-Enable-X-Gene-standby-GPIO-as-interrupt-c.patch b/SOURCES/1021-gpio-xgene-Enable-X-Gene-standby-GPIO-as-interrupt-c.patch new file mode 100644 index 0000000..08fd49b --- /dev/null +++ b/SOURCES/1021-gpio-xgene-Enable-X-Gene-standby-GPIO-as-interrupt-c.patch @@ -0,0 +1,366 @@ +From c67c646945a8681c2d8bc06086394de3874ae9e1 Mon Sep 17 00:00:00 2001 +From: Quan Nguyen qnguyen@apm.com +Date: Wed, 17 Feb 2016 20:15:07 +0700 +Subject: [PATCH 1021/1027] gpio: xgene: Enable X-Gene standby GPIO as + interrupt controller + +Enable X-Gene standby GPIO controller as interrupt controller to provide +its own resources. This avoids ambiguity where GIC interrupt resource is +use as X-Gene standby GPIO interrupt resource in user driver. + +Signed-off-by: Y Vo yvo@apm.com +Signed-off-by: Quan Nguyen qnguyen@apm.com +Acked-by: Marc Zyngier marc.zyngier@arm.com +Signed-off-by: Linus Walleij linus.walleij@linaro.org +--- + drivers/gpio/gpio-xgene-sb.c | 265 +++++++++++++++++++++++++++++++++++++------ + 1 file changed, 233 insertions(+), 32 deletions(-) + +diff --git a/drivers/gpio/gpio-xgene-sb.c b/drivers/gpio/gpio-xgene-sb.c +index 282004d..b993b86 100644 +--- a/drivers/gpio/gpio-xgene-sb.c ++++ b/drivers/gpio/gpio-xgene-sb.c +@@ -2,8 +2,9 @@ + * AppliedMicro X-Gene SoC GPIO-Standby Driver + * + * Copyright (c) 2014, Applied Micro Circuits Corporation +- * Author: Tin Huynh tnhuynh@apm.com. +- * Y Vo yvo@apm.com. ++ * Author: Tin Huynh tnhuynh@apm.com. ++ * Y Vo yvo@apm.com. ++ * Quan Nguyen qnguyen@apm.com. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the +@@ -28,9 +29,14 @@ + + #include "gpiolib.h" + +-#define XGENE_MAX_GPIO_DS 22 +-#define XGENE_MAX_GPIO_DS_IRQ 6 ++/* Common property names */ ++#define XGENE_NIRQ_PROPERTY "apm,nr-irqs" ++#define XGENE_NGPIO_PROPERTY "apm,nr-gpios" ++#define XGENE_IRQ_START_PROPERTY "apm,irq-start" + ++#define XGENE_DFLT_MAX_NGPIO 22 ++#define XGENE_DFLT_MAX_NIRQ 6 ++#define XGENE_DFLT_IRQ_START_PIN 8 + #define GPIO_MASK(x) (1U << ((x) % 32)) + + #define MPA_GPIO_INT_LVL 0x0290 +@@ -39,19 +45,32 @@ + #define MPA_GPIO_IN_ADDR 0x02a4 + #define MPA_GPIO_SEL_LO 0x0294 + ++#define GPIO_INT_LEVEL_H 0x000001 ++#define GPIO_INT_LEVEL_L 0x000000 ++ + /** + * struct xgene_gpio_sb - GPIO-Standby private data structure. + * @gc: memory-mapped GPIO controllers. +- * @irq: Mapping GPIO pins and interrupt number +- * nirq: Number of GPIO pins that supports interrupt ++ * @regs: GPIO register base offset ++ * @irq_domain: GPIO interrupt domain ++ * @irq_start: GPIO pin that start support interrupt ++ * @nirq: Number of GPIO pins that supports interrupt ++ * @parent_irq_base: Start parent HWIRQ + */ + struct xgene_gpio_sb { + struct gpio_chip gc; +- u32 *irq; +- u32 nirq; ++ void __iomem *regs; ++ struct irq_domain *irq_domain; ++ u16 irq_start; ++ u16 nirq; ++ u16 parent_irq_base; + }; + +-static void xgene_gpio_set_bit(struct gpio_chip *gc, void __iomem *reg, u32 gpio, int val) ++#define HWIRQ_TO_GPIO(priv, hwirq) ((hwirq) + (priv)->irq_start) ++#define GPIO_TO_HWIRQ(priv, gpio) ((gpio) - (priv)->irq_start) ++ ++static void xgene_gpio_set_bit(struct gpio_chip *gc, ++ void __iomem *reg, u32 gpio, int val) + { + u32 data; + +@@ -63,23 +82,170 @@ static void xgene_gpio_set_bit(struct gpio_chip *gc, void __iomem *reg, u32 gpio + gc->write_reg(reg, data); + } + +-static int apm_gpio_sb_to_irq(struct gpio_chip *gc, u32 gpio) ++static int xgene_gpio_sb_irq_set_type(struct irq_data *d, unsigned int type) ++{ ++ struct xgene_gpio_sb *priv = irq_data_get_irq_chip_data(d); ++ int gpio = HWIRQ_TO_GPIO(priv, d->hwirq); ++ int lvl_type = GPIO_INT_LEVEL_H; ++ ++ switch (type & IRQ_TYPE_SENSE_MASK) { ++ case IRQ_TYPE_EDGE_RISING: ++ case IRQ_TYPE_LEVEL_HIGH: ++ lvl_type = GPIO_INT_LEVEL_H; ++ break; ++ case IRQ_TYPE_EDGE_FALLING: ++ case IRQ_TYPE_LEVEL_LOW: ++ lvl_type = GPIO_INT_LEVEL_L; ++ break; ++ default: ++ break; ++ } ++ ++ xgene_gpio_set_bit(&priv->gc, priv->regs + MPA_GPIO_SEL_LO, ++ gpio * 2, 1); ++ xgene_gpio_set_bit(&priv->gc, priv->regs + MPA_GPIO_INT_LVL, ++ d->hwirq, lvl_type); ++ ++ /* Propagate IRQ type setting to parent */ ++ if (type & IRQ_TYPE_EDGE_BOTH) ++ return irq_chip_set_type_parent(d, IRQ_TYPE_EDGE_RISING); ++ else ++ return irq_chip_set_type_parent(d, IRQ_TYPE_LEVEL_HIGH); ++} ++ ++static struct irq_chip xgene_gpio_sb_irq_chip = { ++ .name = "sbgpio", ++ .irq_eoi = irq_chip_eoi_parent, ++ .irq_mask = irq_chip_mask_parent, ++ .irq_unmask = irq_chip_unmask_parent, ++ .irq_set_type = xgene_gpio_sb_irq_set_type, ++}; ++ ++static int xgene_gpio_sb_to_irq(struct gpio_chip *gc, u32 gpio) + { + struct xgene_gpio_sb *priv = gpiochip_get_data(gc); ++ struct irq_fwspec fwspec; ++ ++ if ((gpio < priv->irq_start) || ++ (gpio > HWIRQ_TO_GPIO(priv, priv->nirq))) ++ return -ENXIO; ++ ++ if (gc->parent->of_node) ++ fwspec.fwnode = of_node_to_fwnode(gc->parent->of_node); ++ else ++ fwspec.fwnode = gc->parent->fwnode; ++ fwspec.param_count = 2; ++ fwspec.param[0] = GPIO_TO_HWIRQ(priv, gpio); ++ fwspec.param[1] = IRQ_TYPE_NONE; ++ return irq_create_fwspec_mapping(&fwspec); ++} ++ ++static void xgene_gpio_sb_domain_activate(struct irq_domain *d, ++ struct irq_data *irq_data) ++{ ++ struct xgene_gpio_sb *priv = d->host_data; ++ u32 gpio = HWIRQ_TO_GPIO(priv, irq_data->hwirq); ++ ++ if (gpiochip_lock_as_irq(&priv->gc, gpio)) { ++ dev_err(priv->gc.parent, ++ "Unable to configure XGene GPIO standby pin %d as IRQ\n", ++ gpio); ++ return; ++ } ++ ++ xgene_gpio_set_bit(&priv->gc, priv->regs + MPA_GPIO_SEL_LO, ++ gpio * 2, 1); ++} ++ ++static void xgene_gpio_sb_domain_deactivate(struct irq_domain *d, ++ struct irq_data *irq_data) ++{ ++ struct xgene_gpio_sb *priv = d->host_data; ++ u32 gpio = HWIRQ_TO_GPIO(priv, irq_data->hwirq); ++ ++ gpiochip_unlock_as_irq(&priv->gc, gpio); ++ xgene_gpio_set_bit(&priv->gc, priv->regs + MPA_GPIO_SEL_LO, ++ gpio * 2, 0); ++} ++ ++static int xgene_gpio_sb_domain_translate(struct irq_domain *d, ++ struct irq_fwspec *fwspec, ++ unsigned long *hwirq, ++ unsigned int *type) ++{ ++ struct xgene_gpio_sb *priv = d->host_data; + +- if (priv->irq[gpio]) +- return priv->irq[gpio]; ++ if ((fwspec->param_count != 2) || ++ (fwspec->param[0] >= priv->nirq)) ++ return -EINVAL; ++ *hwirq = fwspec->param[0]; ++ *type = fwspec->param[1]; ++ return 0; ++} ++ ++static int xgene_gpio_sb_domain_alloc(struct irq_domain *domain, ++ unsigned int virq, ++ unsigned int nr_irqs, void *data) ++{ ++ struct irq_fwspec *fwspec = data; ++ struct irq_fwspec parent_fwspec; ++ struct xgene_gpio_sb *priv = domain->host_data; ++ irq_hw_number_t hwirq; ++ unsigned int i; ++ ++ hwirq = fwspec->param[0]; ++ for (i = 0; i < nr_irqs; i++) ++ irq_domain_set_hwirq_and_chip(domain, virq + i, hwirq + i, ++ &xgene_gpio_sb_irq_chip, priv); ++ ++ parent_fwspec.fwnode = domain->parent->fwnode; ++ if (is_of_node(parent_fwspec.fwnode)) { ++ parent_fwspec.param_count = 3; ++ parent_fwspec.param[0] = 0;/* SPI */ ++ /* Skip SGIs and PPIs*/ ++ parent_fwspec.param[1] = hwirq + priv->parent_irq_base - 32; ++ parent_fwspec.param[2] = fwspec->param[1]; ++ } else if (is_fwnode_irqchip(parent_fwspec.fwnode)) { ++ parent_fwspec.param_count = 2; ++ parent_fwspec.param[0] = hwirq + priv->parent_irq_base; ++ parent_fwspec.param[1] = fwspec->param[1]; ++ } else ++ return -EINVAL; ++ ++ return irq_domain_alloc_irqs_parent(domain, virq, nr_irqs, ++ &parent_fwspec); ++} ++ ++static void xgene_gpio_sb_domain_free(struct irq_domain *domain, ++ unsigned int virq, ++ unsigned int nr_irqs) ++{ ++ struct irq_data *d; ++ unsigned int i; + +- return -ENXIO; ++ for (i = 0; i < nr_irqs; i++) { ++ d = irq_domain_get_irq_data(domain, virq + i); ++ irq_domain_reset_irq_data(d); ++ } + } + ++static const struct irq_domain_ops xgene_gpio_sb_domain_ops = { ++ .translate = xgene_gpio_sb_domain_translate, ++ .alloc = xgene_gpio_sb_domain_alloc, ++ .free = xgene_gpio_sb_domain_free, ++ .activate = xgene_gpio_sb_domain_activate, ++ .deactivate = xgene_gpio_sb_domain_deactivate, ++}; ++ + static int xgene_gpio_sb_probe(struct platform_device *pdev) + { + struct xgene_gpio_sb *priv; +- u32 ret, i; +- u32 default_lines[] = {0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D}; ++ u32 ret; + struct resource *res; + void __iomem *regs; ++ struct irq_domain *parent_domain = NULL; ++ struct fwnode_handle *fwnode; ++ u32 val32; + + priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) +@@ -90,6 +256,18 @@ static int xgene_gpio_sb_probe(struct platform_device *pdev) + if (IS_ERR(regs)) + return PTR_ERR(regs); + ++ priv->regs = regs; ++ ++ ret = platform_get_irq(pdev, 0); ++ if (ret > 0) { ++ priv->parent_irq_base = irq_get_irq_data(ret)->hwirq; ++ parent_domain = irq_get_irq_data(ret)->domain; ++ } ++ if (!parent_domain) { ++ dev_err(&pdev->dev, "unable to obtain parent domain\n"); ++ return -ENODEV; ++ } ++ + ret = bgpio_init(&priv->gc, &pdev->dev, 4, + regs + MPA_GPIO_IN_ADDR, + regs + MPA_GPIO_OUT_ADDR, NULL, +@@ -97,30 +275,51 @@ static int xgene_gpio_sb_probe(struct platform_device *pdev) + if (ret) + return ret; + +- priv->gc.to_irq = apm_gpio_sb_to_irq; +- priv->gc.ngpio = XGENE_MAX_GPIO_DS; ++ priv->gc.to_irq = xgene_gpio_sb_to_irq; + +- priv->nirq = XGENE_MAX_GPIO_DS_IRQ; ++ /* Retrieve start irq pin, use default if property not found */ ++ priv->irq_start = XGENE_DFLT_IRQ_START_PIN; ++ if (!device_property_read_u32(&pdev->dev, ++ XGENE_IRQ_START_PROPERTY, &val32)) ++ priv->irq_start = val32; + +- priv->irq = devm_kzalloc(&pdev->dev, sizeof(u32) * XGENE_MAX_GPIO_DS, +- GFP_KERNEL); +- if (!priv->irq) +- return -ENOMEM; ++ /* Retrieve number irqs, use default if property not found */ ++ priv->nirq = XGENE_DFLT_MAX_NIRQ; ++ if (!device_property_read_u32(&pdev->dev, XGENE_NIRQ_PROPERTY, &val32)) ++ priv->nirq = val32; + +- for (i = 0; i < priv->nirq; i++) { +- priv->irq[default_lines[i]] = platform_get_irq(pdev, i); +- xgene_gpio_set_bit(&priv->gc, regs + MPA_GPIO_SEL_LO, +- default_lines[i] * 2, 1); +- xgene_gpio_set_bit(&priv->gc, regs + MPA_GPIO_INT_LVL, i, 1); +- } ++ /* Retrieve number gpio, use default if property not found */ ++ priv->gc.ngpio = XGENE_DFLT_MAX_NGPIO; ++ if (!device_property_read_u32(&pdev->dev, XGENE_NGPIO_PROPERTY, &val32)) ++ priv->gc.ngpio = val32; ++ ++ dev_info(&pdev->dev, "Support %d gpios, %d irqs start from pin %d\n", ++ priv->gc.ngpio, priv->nirq, priv->irq_start); + + platform_set_drvdata(pdev, priv); + +- ret = gpiochip_add_data(&priv->gc, priv); +- if (ret) +- dev_err(&pdev->dev, "failed to register X-Gene GPIO Standby driver\n"); ++ if (pdev->dev.of_node) ++ fwnode = of_node_to_fwnode(pdev->dev.of_node); + else +- dev_info(&pdev->dev, "X-Gene GPIO Standby driver registered\n"); ++ fwnode = pdev->dev.fwnode; ++ ++ priv->irq_domain = irq_domain_create_hierarchy(parent_domain, ++ 0, priv->nirq, fwnode, ++ &xgene_gpio_sb_domain_ops, priv); ++ if (!priv->irq_domain) ++ return -ENODEV; ++ ++ priv->gc.irqdomain = priv->irq_domain; ++ ++ ret = gpiochip_add_data(&priv->gc, priv); ++ if (ret) { ++ dev_err(&pdev->dev, ++ "failed to register X-Gene GPIO Standby driver\n"); ++ irq_domain_remove(priv->irq_domain); ++ return ret; ++ } ++ ++ dev_info(&pdev->dev, "X-Gene GPIO Standby driver registered\n"); + + if (priv->nirq > 0) { + /* Register interrupt handlers for gpio signaled acpi events */ +@@ -138,6 +337,8 @@ static int xgene_gpio_sb_remove(struct platform_device *pdev) + acpi_gpiochip_free_interrupts(&priv->gc); + } + ++ irq_domain_remove(priv->irq_domain); ++ + gpiochip_remove(&priv->gc); + return 0; + } +-- +1.8.3.1 + diff --git a/SOURCES/1022-genirq-Export-IRQ-functions-for-module-use.patch b/SOURCES/1022-genirq-Export-IRQ-functions-for-module-use.patch new file mode 100644 index 0000000..443022a --- /dev/null +++ b/SOURCES/1022-genirq-Export-IRQ-functions-for-module-use.patch @@ -0,0 +1,110 @@ +From a726c3a7d7841388f2cb232b2d91d0f9cdc90af3 Mon Sep 17 00:00:00 2001 +From: Quan Nguyen qnguyen@apm.com +Date: Thu, 3 Mar 2016 21:56:52 +0700 +Subject: [PATCH 1022/1027] genirq: Export IRQ functions for module use + +Export irq_chip_*_parent(), irq_domain_create_hierarchy(), +irq_domain_set_hwirq_and_chip(), irq_domain_reset_irq_data(), +irq_domain_alloc/free_irqs_parent() + +So gpio drivers can be built as modules. First user: gpio-xgene-sb + +Signed-off-by: Quan Nguyen qnguyen@apm.com +Acked-by: Linus Walleij linus.walleij@linaro.org +Cc: Phong Vo pvo@apm.com +Cc: Marc Zyngier marc.zyngier@arm.com +Cc: patches@apm.com +Cc: Loc Ho lho@apm.com +Cc: Keyur Chudgar kchudgar@apm.com +Cc: Jiang Liu jiang.liu@linux.intel.com +Link: https://lists.01.org/pipermail/kbuild-all/2016-February/017914.html +Link: http://lkml.kernel.org/r/1457017012-10628-1-git-send-email-qnguyen@apm.com +Signed-off-by: Thomas Gleixner tglx@linutronix.de +--- + kernel/irq/chip.c | 4 ++++ + kernel/irq/irqdomain.c | 5 +++++ + 2 files changed, 9 insertions(+) + +diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c +index 5797909..2f9f2b0 100644 +--- a/kernel/irq/chip.c ++++ b/kernel/irq/chip.c +@@ -961,6 +961,7 @@ void irq_chip_mask_parent(struct irq_data *data) + data = data->parent_data; + data->chip->irq_mask(data); + } ++EXPORT_SYMBOL_GPL(irq_chip_mask_parent); + + /** + * irq_chip_unmask_parent - Unmask the parent interrupt +@@ -971,6 +972,7 @@ void irq_chip_unmask_parent(struct irq_data *data) + data = data->parent_data; + data->chip->irq_unmask(data); + } ++EXPORT_SYMBOL_GPL(irq_chip_unmask_parent); + + /** + * irq_chip_eoi_parent - Invoke EOI on the parent interrupt +@@ -981,6 +983,7 @@ void irq_chip_eoi_parent(struct irq_data *data) + data = data->parent_data; + data->chip->irq_eoi(data); + } ++EXPORT_SYMBOL_GPL(irq_chip_eoi_parent); + + /** + * irq_chip_set_affinity_parent - Set affinity on the parent interrupt +@@ -1016,6 +1019,7 @@ int irq_chip_set_type_parent(struct irq_data *data, unsigned int type) + + return -ENOSYS; + } ++EXPORT_SYMBOL_GPL(irq_chip_set_type_parent); + + /** + * irq_chip_retrigger_hierarchy - Retrigger an interrupt in hardware +diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c +index 4ec3149..5798a43 100644 +--- a/kernel/irq/irqdomain.c ++++ b/kernel/irq/irqdomain.c +@@ -913,6 +913,7 @@ struct irq_domain *irq_domain_create_hierarchy(struct irq_domain *parent, + + return domain; + } ++EXPORT_SYMBOL_GPL(irq_domain_create_hierarchy); + + static void irq_domain_insert_irq(int virq) + { +@@ -1063,6 +1064,7 @@ int irq_domain_set_hwirq_and_chip(struct irq_domain *domain, unsigned int virq, + + return 0; + } ++EXPORT_SYMBOL_GPL(irq_domain_set_hwirq_and_chip); + + /** + * irq_domain_set_info - Set the complete data for a @virq in @domain +@@ -1096,6 +1098,7 @@ void irq_domain_reset_irq_data(struct irq_data *irq_data) + irq_data->chip = &no_irq_chip; + irq_data->chip_data = NULL; + } ++EXPORT_SYMBOL_GPL(irq_domain_reset_irq_data); + + /** + * irq_domain_free_irqs_common - Clear irq_data and free the parent +@@ -1293,6 +1296,7 @@ int irq_domain_alloc_irqs_parent(struct irq_domain *domain, + nr_irqs, arg); + return -ENOSYS; + } ++EXPORT_SYMBOL_GPL(irq_domain_alloc_irqs_parent); + + /** + * irq_domain_free_irqs_parent - Free interrupts from parent domain +@@ -1310,6 +1314,7 @@ void irq_domain_free_irqs_parent(struct irq_domain *domain, + irq_domain_free_irqs_recursive(domain->parent, irq_base, + nr_irqs); + } ++EXPORT_SYMBOL_GPL(irq_domain_free_irqs_parent); + + /** + * irq_domain_activate_irq - Call domain_ops->activate recursively to activate +-- +1.8.3.1 + diff --git a/SPECS/kernel-aarch64.spec b/SPECS/kernel-aarch64.spec index 88a35a6..2034cd0 100644 --- a/SPECS/kernel-aarch64.spec +++ b/SPECS/kernel-aarch64.spec @@ -12,7 +12,7 @@ Summary: The Linux kernel
%define rpmversion 4.5.0 %define pkgrelease 15.el7 -%define centupdate 17.el7 +%define centupdate 18.el7
# allow pkg_release to have configurable %{?dist} tag %define specrelease %%SPECRELEASE%% @@ -345,6 +345,8 @@ Patch1017: 1017-drivers-net-xgene-fix-Coalescing-values-for-v2-hardw.patch Patch1018: 1018-ACPI-PCI-fix-GIC-irq-model-default-PCI-IRQ-polarity.patch Patch1019: 1019-i2c-designware-Implement-support-for-SMBus-block-rea.patch Patch1020: 1020-hwmon-xgene-access-mailbox-as-RAM.patch +Patch1021: 1021-gpio-xgene-Enable-X-Gene-standby-GPIO-as-interrupt-c.patch +Patch1022: 1022-genirq-Export-IRQ-functions-for-module-use.patch
# QDF2400 Patches Patch4000: 4000-arm64-Define-Qualcomm-Technologies-ARMv8-CPU.patch @@ -700,6 +702,8 @@ git am %{PATCH1017} git am %{PATCH1018} git am %{PATCH1019} git am %{PATCH1020} +git am %{PATCH1021} +git am %{PATCH1022}
# Apply QDF2400 patches git am %{PATCH4000} @@ -1478,6 +1482,9 @@ fi %kernel_variant_files %{with_debug} kernel-debug debug
%changelog +* Thu Nov 17 2016 Duc Dang dhdang@apm.com [4.5.0-18.el7] +- Integrate upstream patch to add interrupt support for X-Gene Standby GPIO + * Thu Nov 10 2016 Duc Dang dhdang@apm.com [4.5.0-17.el7] - Integrate upstream fix to make X-Gene HWmon access mailbox as RAM and avoid eror when built as module - Integrated posted patch to support SMBus block read/write for Designware I2C