openwrt/target/linux/generic/hack-5.15/800-GPIO-add-named-gpio-exports.patch

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From cc809a441d8f2924f785eb863dfa6aef47a25b0b Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Tue, 12 Aug 2014 20:49:27 +0200
Subject: [PATCH 30/36] GPIO: add named gpio exports
Signed-off-by: John Crispin <blogic@openwrt.org>
--- a/drivers/gpio/gpiolib-of.c
+++ b/drivers/gpio/gpiolib-of.c
@@ -19,6 +19,8 @@
#include <linux/pinctrl/pinctrl.h>
#include <linux/slab.h>
#include <linux/gpio/machine.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
#include "gpiolib.h"
#include "gpiolib-of.h"
kernel: bump 5.15 to 5.15.62 Deleted following upstreamed patches: bcm27xx: 950-0006-drm-vc4-hdmi-Fix-HPD-GPIO-detection.patch bcm27xx: 950-0420-drm-vc4-Adopt-the-dma-configuration-from-the-HVS-or-.patch bcm27xx: 950-0425-drm-vc4-A-present-but-empty-dmas-disables-audio.patch bcm27xx: 950-0432-vc4-drm-Avoid-full-hdmi-audio-fifo-writes.patch bcm27xx: 950-0433-vc4-drm-vc4_plane-Remove-subpixel-positioning-check.patch bcm27xx: 950-0435-drm-vc4-Correct-pixel-order-for-DSI0.patch bcm27xx: 950-0436-drm-vc4-Register-dsi0-as-the-correct-vc4-encoder-typ.patch bcm27xx: 950-0437-drm-vc4-Fix-dsi0-interrupt-support.patch bcm27xx: 950-0438-drm-vc4-Add-correct-stop-condition-to-vc4_dsi_encode.patch bcm27xx: 950-0443-drm-vc4-Fix-timings-for-interlaced-modes.patch bcm27xx: 950-0445-drm-vc4-Fix-margin-calculations-for-the-right-bottom.patch bcm27xx: 950-0475-drm-vc4-Reset-HDMI-MISC_CONTROL-register.patch bcm27xx: 950-0476-drm-vc4-Release-workaround-buffer-and-DMA-in-error-p.patch bcm27xx: 950-0477-drm-vc4-Correct-DSI-divider-calculations.patch bcm27xx: 950-0664-drm-vc4-dsi-Correct-max-divider-to-255-not-7.patch bcm53xx: 072-next-ARM_dts_BCM53015-add-mr26.patch mediatek: 920-linux-next-dts-mt7622-bpi-r64-fix-wps-button.patch Manually rebased following patches: bcm27xx: 950-0004-drm-vc4-hdmi-Remove-the-DDC-probing-for-status-detec.patch bcm27xx: 950-0700-net-phy-lan87xx-Decrease-phy-polling-rate.patch bcm27xx: 950-0711-drm-vc4-Rename-bridge-to-out_bridge.patch bcm27xx: 950-0713-drm-vc4-Remove-splitting-the-bridge-chain-from-the-d.patch bcm27xx: 950-0715-drm-vc4-Convert-vc4_dsi-to-using-a-bridge-instead-of.patch bcm27xx: 950-0787-vc4-drm-vc4_plane-Keep-fractional-source-coords-insi.patch bcm27xx: 950-0914-mmc-block-Don-t-do-single-sector-reads-during-recove.patch Runtime tested on turris-omnia and glinet-b1300. Tested-by: John Audia <therealgraysky@proton.me> [bcm2711/RPi4B, mt7622/RT3200] Signed-off-by: Petr Štetiar <ynezz@true.cz>
2022-08-22 12:02:36 +00:00
@@ -1059,3 +1061,72 @@ void of_gpio_dev_init(struct gpio_chip *
else
gc->of_node = gdev->dev.of_node;
}
+
+#ifdef CONFIG_GPIO_SYSFS
+
+static struct of_device_id gpio_export_ids[] = {
+ { .compatible = "gpio-export" },
+ { /* sentinel */ }
+};
+
+static int of_gpio_export_probe(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ struct device_node *cnp;
+ u32 val;
+ int nb = 0;
+
+ for_each_child_of_node(np, cnp) {
+ const char *name = NULL;
+ int gpio;
+ bool dmc;
+ int max_gpio = 1;
+ int i;
+
+ of_property_read_string(cnp, "gpio-export,name", &name);
+
+ if (!name)
+ max_gpio = of_gpio_count(cnp);
+
+ for (i = 0; i < max_gpio; i++) {
+ unsigned flags = 0;
+ enum of_gpio_flags of_flags;
+
+ gpio = of_get_gpio_flags(cnp, i, &of_flags);
+ if (!gpio_is_valid(gpio))
+ return gpio;
+
+ if (of_flags == OF_GPIO_ACTIVE_LOW)
+ flags |= GPIOF_ACTIVE_LOW;
+
+ if (!of_property_read_u32(cnp, "gpio-export,output", &val))
+ flags |= val ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW;
+ else
+ flags |= GPIOF_IN;
+
+ if (devm_gpio_request_one(&pdev->dev, gpio, flags, name ? name : of_node_full_name(np)))
+ continue;
+
+ dmc = of_property_read_bool(cnp, "gpio-export,direction_may_change");
+ gpio_export_with_name(gpio, dmc, name);
+ nb++;
+ }
+ }
+
+ dev_info(&pdev->dev, "%d gpio(s) exported\n", nb);
+
+ return 0;
+}
+
+static struct platform_driver gpio_export_driver = {
+ .driver = {
+ .name = "gpio-export",
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(gpio_export_ids),
+ },
+ .probe = of_gpio_export_probe,
+};
+
+module_platform_driver(gpio_export_driver);
+
+#endif
--- a/include/asm-generic/gpio.h
+++ b/include/asm-generic/gpio.h
@@ -125,6 +125,12 @@ static inline int gpio_export(unsigned g
return gpiod_export(gpio_to_desc(gpio), direction_may_change);
}
+int __gpiod_export(struct gpio_desc *desc, bool direction_may_change, const char *name);
+static inline int gpio_export_with_name(unsigned gpio, bool direction_may_change, const char *name)
+{
+ return __gpiod_export(gpio_to_desc(gpio), direction_may_change, name);
+}
+
static inline int gpio_export_link(struct device *dev, const char *name,
unsigned gpio)
{
--- a/include/linux/gpio/consumer.h
+++ b/include/linux/gpio/consumer.h
kernel: bump 5.15 to 5.15.86 Removed upstreamed: pending-5.15/101-Use-stddefs.h-instead-of-compiler.h.patch[1] ipq806x/patches-5.15/122-01-clk-qcom-clk-krait-fix-wrong-div2-functions.patch[2] bcm27xx/patches-5.15/950-0198-drm-fourcc-Add-packed-10bit-YUV-4-2-0-format.patch[3] Manually rebased: ramips/patches-5.15/100-PCI-mt7621-Add-MediaTek-MT7621-PCIe-host-controller-.patch[4] Added patch/backported: ramips/patches-5.15/107-PCI-mt7621-Add-sentinel-to-quirks-table.patch[5] All other patches automatically rebased. 1. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.15.86&id=c160505c9b574b346031fdf2c649d19e7939ca11 2. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.15.86&id=a051e10bfc6906d29dae7a31f0773f2702edfe1b 3. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.15.86&id=ec1727f89ecd6f2252c0c75e200058819f7ce47a 4. Quilt gave this output when I applied the patch to rebase it: % quilt push -f Applying patch platform/100-PCI-mt7621-Add-MediaTek-MT7621-PCIe-host-controller-.patch patching file arch/mips/ralink/Kconfig patching file drivers/pci/controller/Kconfig patching file drivers/pci/controller/Makefile patching file drivers/staging/Kconfig patching file drivers/staging/Makefile patching file drivers/staging/mt7621-pci/Kconfig patching file drivers/staging/mt7621-pci/Makefile patching file drivers/staging/mt7621-pci/TODO patching file drivers/staging/mt7621-pci/mediatek,mt7621-pci.txt patching file drivers/staging/mt7621-pci/pci-mt7621.c Hunk #1 FAILED at 1. Not deleting file drivers/staging/mt7621-pci/pci-mt7621.c as content differs from patch 1 out of 1 hunk FAILED -- saving rejects to file drivers/staging/mt7621-pci/pci-mt7621.c.rej patching file drivers/pci/controller/pcie-mt7621.c Applied patch platform/100-PCI-mt7621-Add-MediaTek-MT7621-PCIe-host-controller-.patch (forced; needs refresh) Upon inspecting drivers/staging/mt7621-pci/pci-mt7621.c.rej, it seems that the original patch wants to delete drivers/staging/mt7621-pci/pci-mt7621.c but upstream's version was not an exact match. I opted to delete that file. 5. Suggestion by hauke: https://github.com/torvalds/linux/commit/19098934f910b4d47cb30251dd39ffa57bef9523 "This patch is in upstream kernel, but it was backported to the old staging driver in kernel 5.15." Build system: x86_64 Build-tested: bcm2711/RPi4B, filogic/xiaomi_redmi-router-ax6000-ubootmod Run-tested: bcm2711/RPi4B, filogic/xiaomi_redmi-router-ax6000-ubootmod Signed-off-by: John Audia <therealgraysky@proton.me>
2022-12-31 15:29:53 +00:00
@@ -712,6 +712,7 @@ static inline void devm_acpi_dev_remove_
#if IS_ENABLED(CONFIG_GPIOLIB) && IS_ENABLED(CONFIG_GPIO_SYSFS)
+int _gpiod_export(struct gpio_desc *desc, bool direction_may_change, const char *name);
int gpiod_export(struct gpio_desc *desc, bool direction_may_change);
int gpiod_export_link(struct device *dev, const char *name,
struct gpio_desc *desc);
kernel: bump 5.15 to 5.15.86 Removed upstreamed: pending-5.15/101-Use-stddefs.h-instead-of-compiler.h.patch[1] ipq806x/patches-5.15/122-01-clk-qcom-clk-krait-fix-wrong-div2-functions.patch[2] bcm27xx/patches-5.15/950-0198-drm-fourcc-Add-packed-10bit-YUV-4-2-0-format.patch[3] Manually rebased: ramips/patches-5.15/100-PCI-mt7621-Add-MediaTek-MT7621-PCIe-host-controller-.patch[4] Added patch/backported: ramips/patches-5.15/107-PCI-mt7621-Add-sentinel-to-quirks-table.patch[5] All other patches automatically rebased. 1. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.15.86&id=c160505c9b574b346031fdf2c649d19e7939ca11 2. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.15.86&id=a051e10bfc6906d29dae7a31f0773f2702edfe1b 3. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.15.86&id=ec1727f89ecd6f2252c0c75e200058819f7ce47a 4. Quilt gave this output when I applied the patch to rebase it: % quilt push -f Applying patch platform/100-PCI-mt7621-Add-MediaTek-MT7621-PCIe-host-controller-.patch patching file arch/mips/ralink/Kconfig patching file drivers/pci/controller/Kconfig patching file drivers/pci/controller/Makefile patching file drivers/staging/Kconfig patching file drivers/staging/Makefile patching file drivers/staging/mt7621-pci/Kconfig patching file drivers/staging/mt7621-pci/Makefile patching file drivers/staging/mt7621-pci/TODO patching file drivers/staging/mt7621-pci/mediatek,mt7621-pci.txt patching file drivers/staging/mt7621-pci/pci-mt7621.c Hunk #1 FAILED at 1. Not deleting file drivers/staging/mt7621-pci/pci-mt7621.c as content differs from patch 1 out of 1 hunk FAILED -- saving rejects to file drivers/staging/mt7621-pci/pci-mt7621.c.rej patching file drivers/pci/controller/pcie-mt7621.c Applied patch platform/100-PCI-mt7621-Add-MediaTek-MT7621-PCIe-host-controller-.patch (forced; needs refresh) Upon inspecting drivers/staging/mt7621-pci/pci-mt7621.c.rej, it seems that the original patch wants to delete drivers/staging/mt7621-pci/pci-mt7621.c but upstream's version was not an exact match. I opted to delete that file. 5. Suggestion by hauke: https://github.com/torvalds/linux/commit/19098934f910b4d47cb30251dd39ffa57bef9523 "This patch is in upstream kernel, but it was backported to the old staging driver in kernel 5.15." Build system: x86_64 Build-tested: bcm2711/RPi4B, filogic/xiaomi_redmi-router-ax6000-ubootmod Run-tested: bcm2711/RPi4B, filogic/xiaomi_redmi-router-ax6000-ubootmod Signed-off-by: John Audia <therealgraysky@proton.me>
2022-12-31 15:29:53 +00:00
@@ -719,6 +720,13 @@ void gpiod_unexport(struct gpio_desc *de
#else /* CONFIG_GPIOLIB && CONFIG_GPIO_SYSFS */
+static inline int _gpiod_export(struct gpio_desc *desc,
+ bool direction_may_change,
+ const char *name)
+{
+ return -ENOSYS;
+}
+
static inline int gpiod_export(struct gpio_desc *desc,
bool direction_may_change)
{
--- a/drivers/gpio/gpiolib-sysfs.c
+++ b/drivers/gpio/gpiolib-sysfs.c
@@ -564,7 +564,7 @@ static struct class gpio_class = {
*
* Returns zero on success, else an error.
*/
-int gpiod_export(struct gpio_desc *desc, bool direction_may_change)
+int __gpiod_export(struct gpio_desc *desc, bool direction_may_change, const char *name)
{
struct gpio_chip *chip;
struct gpio_device *gdev;
@@ -626,6 +626,8 @@ int gpiod_export(struct gpio_desc *desc,
offset = gpio_chip_hwgpio(desc);
if (chip->names && chip->names[offset])
ioname = chip->names[offset];
+ if (name)
+ ioname = name;
dev = device_create_with_groups(&gpio_class, &gdev->dev,
MKDEV(0, 0), data, gpio_groups,
@@ -647,6 +649,12 @@ err_unlock:
gpiod_dbg(desc, "%s: status %d\n", __func__, status);
return status;
}
+EXPORT_SYMBOL_GPL(__gpiod_export);
+
+int gpiod_export(struct gpio_desc *desc, bool direction_may_change)
+{
+ return __gpiod_export(desc, direction_may_change, NULL);
+}
EXPORT_SYMBOL_GPL(gpiod_export);
static int match_export(struct device *dev, const void *desc)