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openwrt/target/linux/ath25/patches-5.10/107-ar5312_gpio.patch
Sergey Ryazanov 5deb3996e2 ath25: add kernel 5.10 support 
Copy and refresh patches and config from 5.4 to 5.10. Most patches
require no more then automatic refresh. The only exception is the
Ethernet driver patch, which requires some more work:
* drop eth_change_mtu() usage since it was removed from the kernel,
  it anyway useless for drivers that utilizes alloc_etherdev();
* add the txqueue number argument to the .ndo_tx_timeout callback
  function;
* replace ioremap_nocache() which was finally removed from the kernel by
  the ioremap() with the same behaviour.

Switch target to the new kernel version.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
[use KERNEL_TESTING_PATCHVER for now]
Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
2021-12-27 16:00:21 +00:00

213 lines
5.7 KiB
Diff
Raw Blame History

--- a/arch/mips/ath25/Kconfig
+++ b/arch/mips/ath25/Kconfig
@@ -2,6 +2,7 @@
config SOC_AR5312
bool "Atheros AR5312/AR2312+ SoC support"
depends on ATH25
+ select GPIO_AR5312
default y
config SOC_AR2315
--- a/arch/mips/ath25/ar5312.c
+++ b/arch/mips/ath25/ar5312.c
@@ -23,6 +23,7 @@
#include <linux/platform_device.h>
#include <linux/mtd/physmap.h>
#include <linux/reboot.h>
+#include <linux/gpio.h>
#include <asm/bootinfo.h>
#include <asm/reboot.h>
#include <asm/time.h>
@@ -178,6 +179,22 @@ static struct platform_device ar5312_phy
.num_resources = 1,
};
+static struct resource ar5312_gpio_res[] = {
+ {
+ .name = "ar5312-gpio",
+ .flags = IORESOURCE_MEM,
+ .start = AR5312_GPIO_BASE,
+ .end = AR5312_GPIO_BASE + AR5312_GPIO_SIZE - 1,
+ },
+};
+
+static struct platform_device ar5312_gpio = {
+ .name = "ar5312-gpio",
+ .id = -1,
+ .resource = ar5312_gpio_res,
+ .num_resources = ARRAY_SIZE(ar5312_gpio_res),
+};
+
static void __init ar5312_flash_init(void)
{
void __iomem *flashctl_base;
@@ -245,6 +262,8 @@ void __init ar5312_init_devices(void)
platform_device_register(&ar5312_physmap_flash);
+ platform_device_register(&ar5312_gpio);
+
switch (ath25_soc) {
case ATH25_SOC_AR5312:
if (!ath25_board.radio)
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -142,6 +142,13 @@ config GPIO_AMDPT
driver for GPIO functionality on Promontory IOHub
Require ACPI ASL code to enumerate as a platform device.
+config GPIO_AR5312
+ bool "AR5312 SoC GPIO support"
+ default y if SOC_AR5312
+ depends on SOC_AR5312
+ help
+ Say yes here to enable GPIO support for Atheros AR5312/AR2312+ SoCs.
+
config GPIO_ASPEED
tristate "Aspeed GPIO support"
depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -32,6 +32,7 @@ obj-$(CONFIG_GPIO_ALTERA) += gpio-alt
obj-$(CONFIG_GPIO_AMD8111) += gpio-amd8111.o
obj-$(CONFIG_GPIO_AMD_FCH) += gpio-amd-fch.o
obj-$(CONFIG_GPIO_AMDPT) += gpio-amdpt.o
+obj-$(CONFIG_GPIO_AR5312) += gpio-ar5312.o
obj-$(CONFIG_GPIO_ARIZONA) += gpio-arizona.o
obj-$(CONFIG_GPIO_ASPEED) += gpio-aspeed.o
obj-$(CONFIG_GPIO_ASPEED_SGPIO) += gpio-aspeed-sgpio.o
--- /dev/null
+++ b/drivers/gpio/gpio-ar5312.c
@@ -0,0 +1,121 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2003 Atheros Communications, Inc., All Rights Reserved.
+ * Copyright (C) 2006 FON Technology, SL.
+ * Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org>
+ * Copyright (C) 2006-2009 Felix Fietkau <nbd@nbd.name>
+ * Copyright (C) 2012 Alexandros C. Couloumbis <alex@ozo.com>
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/gpio.h>
+
+#define DRIVER_NAME "ar5312-gpio"
+
+#define AR5312_GPIO_DO 0x00 /* output register */
+#define AR5312_GPIO_DI 0x04 /* intput register */
+#define AR5312_GPIO_CR 0x08 /* control register */
+
+#define AR5312_GPIO_CR_M(x) (1 << (x)) /* mask for i/o */
+#define AR5312_GPIO_CR_O(x) (0 << (x)) /* mask for output */
+#define AR5312_GPIO_CR_I(x) (1 << (x)) /* mask for input */
+#define AR5312_GPIO_CR_INT(x) (1 << ((x)+8)) /* mask for interrupt */
+#define AR5312_GPIO_CR_UART(x) (1 << ((x)+16)) /* uart multiplex */
+
+#define AR5312_GPIO_NUM 8
+
+static void __iomem *ar5312_mem;
+
+static inline u32 ar5312_gpio_reg_read(unsigned reg)
+{
+ return __raw_readl(ar5312_mem + reg);
+}
+
+static inline void ar5312_gpio_reg_write(unsigned reg, u32 val)
+{
+ __raw_writel(val, ar5312_mem + reg);
+}
+
+static inline void ar5312_gpio_reg_mask(unsigned reg, u32 mask, u32 val)
+{
+ ar5312_gpio_reg_write(reg, (ar5312_gpio_reg_read(reg) & ~mask) | val);
+}
+
+static int ar5312_gpio_get_val(struct gpio_chip *chip, unsigned gpio)
+{
+ return (ar5312_gpio_reg_read(AR5312_GPIO_DI) >> gpio) & 1;
+}
+
+static void ar5312_gpio_set_val(struct gpio_chip *chip, unsigned gpio, int val)
+{
+ u32 reg = ar5312_gpio_reg_read(AR5312_GPIO_DO);
+
+ reg = val ? reg | (1 << gpio) : reg & ~(1 << gpio);
+ ar5312_gpio_reg_write(AR5312_GPIO_DO, reg);
+}
+
+static int ar5312_gpio_dir_in(struct gpio_chip *chip, unsigned gpio)
+{
+ ar5312_gpio_reg_mask(AR5312_GPIO_CR, 0, 1 << gpio);
+ return 0;
+}
+
+static int ar5312_gpio_dir_out(struct gpio_chip *chip, unsigned gpio, int val)
+{
+ ar5312_gpio_reg_mask(AR5312_GPIO_CR, 1 << gpio, 0);
+ ar5312_gpio_set_val(chip, gpio, val);
+ return 0;
+}
+
+static struct gpio_chip ar5312_gpio_chip = {
+ .label = DRIVER_NAME,
+ .direction_input = ar5312_gpio_dir_in,
+ .direction_output = ar5312_gpio_dir_out,
+ .set = ar5312_gpio_set_val,
+ .get = ar5312_gpio_get_val,
+ .base = 0,
+ .ngpio = AR5312_GPIO_NUM,
+};
+
+static int ar5312_gpio_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct resource *res;
+ int ret;
+
+ if (ar5312_mem)
+ return -EBUSY;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ ar5312_mem = devm_ioremap_resource(dev, res);
+ if (IS_ERR(ar5312_mem))
+ return PTR_ERR(ar5312_mem);
+
+ ar5312_gpio_chip.parent = dev;
+ ret = gpiochip_add(&ar5312_gpio_chip);
+ if (ret) {
+ dev_err(dev, "failed to add gpiochip\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+static struct platform_driver ar5312_gpio_driver = {
+ .probe = ar5312_gpio_probe,
+ .driver = {
+ .name = DRIVER_NAME,
+ .owner = THIS_MODULE,
+ }
+};
+
+static int __init ar5312_gpio_init(void)
+{
+ return platform_driver_register(&ar5312_gpio_driver);
+}
+subsys_initcall(ar5312_gpio_init);
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -219,6 +219,7 @@ config ATH25
select CEVT_R4K
select CSRC_R4K
select DMA_NONCOHERENT
+ select GPIOLIB
select IRQ_MIPS_CPU
select IRQ_DOMAIN
select SYS_HAS_CPU_MIPS32_R1
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