This patch integrates these GPIO drivers into gpio-mmio.

Signed-off-by: Christian Lamparter <chunk...@googlemail.com>
---
 drivers/gpio/Kconfig         |  43 ++--------
 drivers/gpio/Makefile        |   4 -
 drivers/gpio/gpio-clps711x.c |  91 ---------------------
 drivers/gpio/gpio-ge.c       | 114 --------------------------
 drivers/gpio/gpio-mmio.c     | 190 +++++++++++++++++++++++++++++++++++++++++++
 drivers/gpio/gpio-moxart.c   |  84 -------------------
 drivers/gpio/gpio-ts4800.c   |  81 ------------------
 7 files changed, 198 insertions(+), 409 deletions(-)
 delete mode 100644 drivers/gpio/gpio-clps711x.c
 delete mode 100644 drivers/gpio/gpio-ge.c
 delete mode 100644 drivers/gpio/gpio-moxart.c
 delete mode 100644 drivers/gpio/gpio-ts4800.c

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index f73f26b..df6ca48 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -152,13 +152,6 @@ config GPIO_BRCMSTB
        help
          Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
 
-config GPIO_CLPS711X
-       tristate "CLPS711X GPIO support"
-       depends on ARCH_CLPS711X || COMPILE_TEST
-       select GPIO_GENERIC
-       help
-         Say yes here to support GPIO on CLPS711X SoCs.
-
 config GPIO_DAVINCI
        bool "TI Davinci/Keystone GPIO support"
        default y if ARCH_DAVINCI
@@ -194,22 +187,18 @@ config GPIO_ETRAXFS
        help
          Say yes here to support the GPIO controller on Axis ETRAX FS SoCs.
 
-config GPIO_GE_FPGA
-       bool "GE FPGA based GPIO"
-       depends on GE_FPGA
-       select GPIO_GENERIC
-       help
-         Support for common GPIO functionality provided on some GE Single Board
-         Computers.
-
-         This driver provides basic support (configure as input or output, read
-         and write pin state) for GPIO implemented in a number of GE single
-         board computers.
-
 config GPIO_GENERIC_PLATFORM
        tristate "Generic memory-mapped GPIO controller support (MMIO platform 
device)"
        select GPIO_GENERIC
        help
+         Select this to support many generic memory-mapped GPIO controllers.
+
+         This driver also includes support for the following GPIOs:
+           CLPS711X SoCs
+           MOXA ART SoC
+           TS-4800 FPGA DIO blocks and compatibles.
+           GPIOs found on some GE Single Board Computers.
+
          Say yes here to support basic platform_device memory-mapped GPIO 
controllers.
 
 config GPIO_GRGPIO
@@ -286,14 +275,6 @@ config GPIO_MM_LANTIQ
          (EBU) found on Lantiq SoCs. The gpios are output only as they are
          created by attaching a 16bit latch to the bus.
 
-config GPIO_MOXART
-       bool "MOXART GPIO support"
-       depends on ARCH_MOXART || COMPILE_TEST
-       select GPIO_GENERIC
-       help
-         Select this option to enable GPIO driver for
-         MOXA ART SoC devices.
-
 config GPIO_MPC5200
        def_bool y
        depends on PPC_MPC52xx
@@ -405,14 +386,6 @@ config GPIO_TEGRA
        default y
        depends on ARCH_TEGRA || COMPILE_TEST
 
-config GPIO_TS4800
-       tristate "TS-4800 DIO blocks and compatibles"
-       depends on OF_GPIO
-       depends on SOC_IMX51 || COMPILE_TEST
-       select GPIO_GENERIC
-       help
-         This driver support TS-4800 FPGA GPIO controllers.
-
 config GPIO_TZ1090
        bool "Toumaz Xenif TZ1090 GPIO support"
        depends on SOC_TZ1090
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index 991598e..d8d63ae 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -31,7 +31,6 @@ obj-$(CONFIG_GPIO_ATH79)      += gpio-ath79.o
 obj-$(CONFIG_GPIO_BCM_KONA)    += gpio-bcm-kona.o
 obj-$(CONFIG_GPIO_BRCMSTB)     += gpio-brcmstb.o
 obj-$(CONFIG_GPIO_BT8XX)       += gpio-bt8xx.o
-obj-$(CONFIG_GPIO_CLPS711X)    += gpio-clps711x.o
 obj-$(CONFIG_GPIO_CS5535)      += gpio-cs5535.o
 obj-$(CONFIG_GPIO_CRYSTAL_COVE)        += gpio-crystalcove.o
 obj-$(CONFIG_GPIO_DA9052)      += gpio-da9052.o
@@ -43,7 +42,6 @@ obj-$(CONFIG_GPIO_EM)         += gpio-em.o
 obj-$(CONFIG_GPIO_EP93XX)      += gpio-ep93xx.o
 obj-$(CONFIG_GPIO_ETRAXFS)     += gpio-etraxfs.o
 obj-$(CONFIG_GPIO_F7188X)      += gpio-f7188x.o
-obj-$(CONFIG_GPIO_GE_FPGA)     += gpio-ge.o
 obj-$(CONFIG_GPIO_GRGPIO)      += gpio-grgpio.o
 obj-$(CONFIG_GPIO_ICH)         += gpio-ich.o
 obj-$(CONFIG_GPIO_IOP)         += gpio-iop.o
@@ -68,7 +66,6 @@ obj-$(CONFIG_GPIO_MC9S08DZ60) += gpio-mc9s08dz60.o
 obj-$(CONFIG_GPIO_MCP23S08)    += gpio-mcp23s08.o
 obj-$(CONFIG_GPIO_ML_IOH)      += gpio-ml-ioh.o
 obj-$(CONFIG_GPIO_MM_LANTIQ)   += gpio-mm-lantiq.o
-obj-$(CONFIG_GPIO_MOXART)      += gpio-moxart.o
 obj-$(CONFIG_GPIO_MPC5200)     += gpio-mpc5200.o
 obj-$(CONFIG_GPIO_MPC8XXX)     += gpio-mpc8xxx.o
 obj-$(CONFIG_GPIO_MSIC)                += gpio-msic.o
@@ -107,7 +104,6 @@ obj-$(CONFIG_GPIO_TPS65218) += gpio-tps65218.o
 obj-$(CONFIG_GPIO_TPS6586X)    += gpio-tps6586x.o
 obj-$(CONFIG_GPIO_TPS65910)    += gpio-tps65910.o
 obj-$(CONFIG_GPIO_TPS65912)    += gpio-tps65912.o
-obj-$(CONFIG_GPIO_TS4800)      += gpio-ts4800.o
 obj-$(CONFIG_GPIO_TS5500)      += gpio-ts5500.o
 obj-$(CONFIG_GPIO_TWL4030)     += gpio-twl4030.o
 obj-$(CONFIG_GPIO_TWL6040)     += gpio-twl6040.o
diff --git a/drivers/gpio/gpio-clps711x.c b/drivers/gpio/gpio-clps711x.c
deleted file mode 100644
index 5a69025..0000000
--- a/drivers/gpio/gpio-clps711x.c
+++ /dev/null
@@ -1,91 +0,0 @@
-/*
- *  CLPS711X GPIO driver
- *
- *  Copyright (C) 2012,2013 Alexander Shiyan <shc_w...@mail.ru>
- *
- * 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 Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-
-#include <linux/err.h>
-#include <linux/module.h>
-#include <linux/gpio/driver.h>
-#include <linux/platform_device.h>
-
-static int clps711x_gpio_probe(struct platform_device *pdev)
-{
-       struct device_node *np = pdev->dev.of_node;
-       void __iomem *dat, *dir;
-       struct gpio_chip *gc;
-       struct resource *res;
-       int err, id = np ? of_alias_get_id(np, "gpio") : pdev->id;
-
-       if ((id < 0) || (id > 4))
-               return -ENODEV;
-
-       gc = devm_kzalloc(&pdev->dev, sizeof(*gc), GFP_KERNEL);
-       if (!gc)
-               return -ENOMEM;
-
-       res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-       dat = devm_ioremap_resource(&pdev->dev, res);
-       if (IS_ERR(dat))
-               return PTR_ERR(dat);
-
-       res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
-       dir = devm_ioremap_resource(&pdev->dev, res);
-       if (IS_ERR(dir))
-               return PTR_ERR(dir);
-
-       switch (id) {
-       case 3:
-               /* PORTD is inverted logic for direction register */
-               err = bgpio_init(gc, &pdev->dev, 1, dat, NULL, NULL,
-                                NULL, dir, 0);
-               break;
-       default:
-               err = bgpio_init(gc, &pdev->dev, 1, dat, NULL, NULL,
-                                dir, NULL, 0);
-               break;
-       }
-
-       if (err)
-               return err;
-
-       switch (id) {
-       case 4:
-               /* PORTE is 3 lines only */
-               gc->ngpio = 3;
-               break;
-       default:
-               break;
-       }
-
-       gc->base = id * 8;
-       gc->owner = THIS_MODULE;
-       platform_set_drvdata(pdev, gc);
-
-       return devm_gpiochip_add_data(&pdev->dev, gc, NULL);
-}
-
-static const struct of_device_id __maybe_unused clps711x_gpio_ids[] = {
-       { .compatible = "cirrus,clps711x-gpio" },
-       { }
-};
-MODULE_DEVICE_TABLE(of, clps711x_gpio_ids);
-
-static struct platform_driver clps711x_gpio_driver = {
-       .driver = {
-               .name           = "clps711x-gpio",
-               .of_match_table = of_match_ptr(clps711x_gpio_ids),
-       },
-       .probe  = clps711x_gpio_probe,
-};
-module_platform_driver(clps711x_gpio_driver);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Alexander Shiyan <shc_w...@mail.ru>");
-MODULE_DESCRIPTION("CLPS711X GPIO driver");
-MODULE_ALIAS("platform:clps711x-gpio");
diff --git a/drivers/gpio/gpio-ge.c b/drivers/gpio/gpio-ge.c
deleted file mode 100644
index 8650b29..0000000
--- a/drivers/gpio/gpio-ge.c
+++ /dev/null
@@ -1,114 +0,0 @@
-/*
- * Driver for GE FPGA based GPIO
- *
- * Author: Martyn Welch <martyn.we...@ge.com>
- *
- * 2008 (c) GE Intelligent Platforms Embedded Systems, Inc.
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2.  This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
- */
-
-/* TODO
- *
- * Configuration of output modes (totem-pole/open-drain)
- * Interrupt configuration - interrupts are always generated the FPGA relies on
- * the I/O interrupt controllers mask to stop them propergating
- */
-
-#include <linux/kernel.h>
-#include <linux/io.h>
-#include <linux/slab.h>
-#include <linux/of_device.h>
-#include <linux/of_gpio.h>
-#include <linux/of_address.h>
-#include <linux/module.h>
-#include <linux/gpio/driver.h>
-
-#define GEF_GPIO_DIRECT                0x00
-#define GEF_GPIO_IN            0x04
-#define GEF_GPIO_OUT           0x08
-#define GEF_GPIO_TRIG          0x0C
-#define GEF_GPIO_POLAR_A       0x10
-#define GEF_GPIO_POLAR_B       0x14
-#define GEF_GPIO_INT_STAT      0x18
-#define GEF_GPIO_OVERRUN       0x1C
-#define GEF_GPIO_MODE          0x20
-
-static const struct of_device_id gef_gpio_ids[] = {
-       {
-               .compatible     = "gef,sbc610-gpio",
-               .data           = (void *)19,
-       }, {
-               .compatible     = "gef,sbc310-gpio",
-               .data           = (void *)6,
-       }, {
-               .compatible     = "ge,imp3a-gpio",
-               .data           = (void *)16,
-       },
-       { }
-};
-MODULE_DEVICE_TABLE(of, gef_gpio_ids);
-
-static int __init gef_gpio_probe(struct platform_device *pdev)
-{
-       const struct of_device_id *of_id =
-               of_match_device(gef_gpio_ids, &pdev->dev);
-       struct gpio_chip *gc;
-       void __iomem *regs;
-       int ret;
-
-       gc = devm_kzalloc(&pdev->dev, sizeof(*gc), GFP_KERNEL);
-       if (!gc)
-               return -ENOMEM;
-
-       regs = of_iomap(pdev->dev.of_node, 0);
-       if (!regs)
-               return -ENOMEM;
-
-       ret = bgpio_init(gc, &pdev->dev, 4, regs + GEF_GPIO_IN,
-                        regs + GEF_GPIO_OUT, NULL, NULL,
-                        regs + GEF_GPIO_DIRECT, BGPIOF_BIG_ENDIAN_BYTE_ORDER);
-       if (ret) {
-               dev_err(&pdev->dev, "bgpio_init failed\n");
-               goto err0;
-       }
-
-       /* Setup pointers to chip functions */
-       gc->label = devm_kstrdup(&pdev->dev, pdev->dev.of_node->full_name,
-                                    GFP_KERNEL);
-       if (!gc->label) {
-               ret = -ENOMEM;
-               goto err0;
-       }
-
-       gc->base = -1;
-       gc->ngpio = (u16)(uintptr_t)of_id->data;
-       gc->of_gpio_n_cells = 2;
-       gc->of_node = pdev->dev.of_node;
-
-       /* This function adds a memory mapped GPIO chip */
-       ret = devm_gpiochip_add_data(&pdev->dev, gc, NULL);
-       if (ret)
-               goto err0;
-
-       return 0;
-err0:
-       iounmap(regs);
-       pr_err("%s: GPIO chip registration failed\n",
-                       pdev->dev.of_node->full_name);
-       return ret;
-};
-
-static struct platform_driver gef_gpio_driver = {
-       .driver = {
-               .name           = "gef-gpio",
-               .of_match_table = gef_gpio_ids,
-       },
-};
-module_platform_driver_probe(gef_gpio_driver, gef_gpio_probe);
-
-MODULE_DESCRIPTION("GE I/O FPGA GPIO driver");
-MODULE_AUTHOR("Martyn Welch <martyn.we...@ge.com");
-MODULE_LICENSE("GPL");
diff --git a/drivers/gpio/gpio-mmio.c b/drivers/gpio/gpio-mmio.c
index 1cfb70a..f116786 100644
--- a/drivers/gpio/gpio-mmio.c
+++ b/drivers/gpio/gpio-mmio.c
@@ -610,10 +610,200 @@ static int bgpio_basic_mmio_parse_dt(struct 
platform_device *pdev,
        return 0;
 }
 
+static int clps711x_parse_dt(struct platform_device *pdev,
+                            struct bgpio_pdata *pdata,
+                            unsigned long *flags)
+{
+       struct device_node *np = pdev->dev.of_node;
+       struct resource *res;
+       const char *dir_reg_name;
+       int id = np ? of_alias_get_id(np, "gpio") : pdev->id;
+
+       if ((id < 0) || (id > 4))
+               return -ENODEV;
+
+       /* PORTE is 3 lines only */
+       pdata->ngpio = (id == 4) ? 3 : /* determined by register width */ 0;
+
+       /* PORTD is inverted logic for direction register */
+       dir_reg_name = (id == 3) ? "dirin" : "dirout",
+
+       pdata->base = id * 8;
+
+       res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+       if (!res)
+               return -EINVAL;
+       if (!res->name || strcmp("dat", res->name))
+               res->name = devm_kstrdup(&pdev->dev, "dat", GFP_KERNEL);
+
+       res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+       if (!res)
+               return -EINVAL;
+       if (!res->name || strcmp(dir_reg_name, res->name))
+               res->name = devm_kstrdup(&pdev->dev, dir_reg_name, GFP_KERNEL);
+
+       return 0;
+}
+
+static int ge_dt_cb(struct platform_device *pdev,
+                   struct bgpio_pdata *pdata,
+                   unsigned long *flags)
+{
+       struct device_node *np = pdev->dev.of_node;
+
+       pdata->label = devm_kstrdup(&pdev->dev, np->full_name, GFP_KERNEL);
+       if (!pdata->label)
+               return -ENOMEM;
+
+       return 0;
+}
+
+static int moxart_dt_cb(struct platform_device *pdev,
+                       struct bgpio_pdata *pdata,
+                       unsigned long *flags)
+{
+       pdata->base = 0;
+       pdata->label = "moxart-gpio";
+       return 0;
+}
+
+
+static int ts4800_dt_cb(struct platform_device *pdev,
+                       struct bgpio_pdata *pdata,
+                       unsigned long *flags)
+{
+       int err;
+
+       err = of_property_read_u32(pdev->dev.of_node, "ngpios", &pdata->ngpio);
+       if (err == -EINVAL) {
+               pdata->ngpio = 16;
+               err = 0;
+       }
+       return err;
+}
+
+struct compat_gpio_device_data {
+       unsigned int expected_resource_size;
+       unsigned int ngpio;
+       resource_size_t register_width;
+       unsigned long flags;
+       int (*call_back)(struct platform_device *pdev,
+                        struct bgpio_pdata *pdata,
+                        unsigned long *flags);
+       struct resource_replacement {
+               resource_size_t start_offset;
+               const char *name;
+       } resources[5];
+};
+
+#define ADD_COMPAT_REGISTER(_name, _offset)    \
+       { .name = (_name), .start_offset = (_offset) }
+
+#define ADD_COMPAT_GPIO(_comp, _sz, _ngpio, _width, _cb, _f, _res...)  \
+       { .compatible = (_comp),                                        \
+         .data = &(struct compat_gpio_device_data) {                   \
+               .expected_resource_size = (_sz),                        \
+               .ngpio = (_ngpio),                                      \
+               .register_width = (_width),                             \
+               .flags = (_f),                                          \
+               .call_back = (_cb),                                     \
+               .resources = { _res },                                  \
+       }                                                               \
+}
+
+#define ADD_COMPAT_GE_GPIO(_name, _ngpio)                              \
+       ADD_COMPAT_GPIO(_name, 0x24, _ngpio, 0x4, ge_dt_cb,             \
+                BGPIOF_BIG_ENDIAN_BYTE_ORDER,                          \
+                ADD_COMPAT_REGISTER("dat", 0x04),                      \
+                ADD_COMPAT_REGISTER("set", 0x08),                      \
+                ADD_COMPAT_REGISTER("dirin", 0x00))                    \
+
+static const struct of_device_id compat_gpio_devices[] = {
+       ADD_COMPAT_GE_GPIO("ge,imp3a-gpio", 16),
+       ADD_COMPAT_GE_GPIO("gef,sbc310-gpio", 6),
+       ADD_COMPAT_GE_GPIO("gef,sbc610-gpio", 19),
+       ADD_COMPAT_GPIO("moxa,moxart-gpio", 0xc, 0, 0x4, moxart_dt_cb,
+                BGPIOF_READ_OUTPUT_REG_SET,
+                ADD_COMPAT_REGISTER("dat", 0x04),
+                ADD_COMPAT_REGISTER("set", 0x00),
+                ADD_COMPAT_REGISTER("dirout", 0x08)),
+       ADD_COMPAT_GPIO("technologic,ts4800-gpio", 0x6, 16, 0x2, ts4800_dt_cb,
+                0, ADD_COMPAT_REGISTER("dat", 0x00),
+                ADD_COMPAT_REGISTER("set", 0x02),
+                ADD_COMPAT_REGISTER("dirout", 0x04)),
+};
+
+#undef ADD_COMPAT_GE_GPIO
+#undef ADD_COMPAT_GPIO
+#undef ADD_COMPAT_REGISTER
+
+static int compat_parse_dt(struct platform_device *pdev,
+                          struct bgpio_pdata *pdata,
+                          unsigned long *flags)
+{
+       const struct device_node *node = pdev->dev.of_node;
+       const struct compat_gpio_device_data *entry;
+       const struct of_device_id *of_id;
+       struct resource *res;
+       int err;
+
+       of_id = of_match_node(compat_gpio_devices, node);
+       if (!of_id)
+               return -ENODEV;
+
+       entry = of_id->data;
+       if (!entry || !entry->resources[0].name)
+               return -EINVAL;
+
+       res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+       if (!res)
+               return -EINVAL;
+
+       if (!res->name || strcmp(entry->resources[0].name, res->name)) {
+               struct resource nres[ARRAY_SIZE(entry->resources)];
+               int i;
+
+               if (resource_size(res) != entry->expected_resource_size)
+                       return -EINVAL;
+
+               for (i = 0; i < ARRAY_SIZE(entry->resources); i++) {
+                       if (!entry->resources[i].name)
+                               continue;
+
+                       nres[i].name = devm_kstrdup(&pdev->dev,
+                               entry->resources[i].name, GFP_KERNEL);
+                       nres[i].start = res->start +
+                               entry->resources[i].start_offset;
+                       nres[i].end = nres[i].start +
+                               entry->register_width - 1;
+                       nres[i].flags = IORESOURCE_MEM;
+               }
+
+               err = platform_device_add_resources(pdev, nres, i);
+               if (err)
+                       return err;
+       }
+
+       pdata->base = -1;
+       pdata->ngpio = entry->ngpio;
+       *flags = entry->flags;
+
+       if (entry->call_back)
+               err = entry->call_back(pdev, pdata, flags);
+
+       return err;
+}
+
 #define ADD(_name, _func) { .compatible = _name, .data = _func }
 
 static const struct of_device_id bgpio_of_match[] = {
        ADD("wd,mbl-gpio", bgpio_basic_mmio_parse_dt),
+       ADD("cirrus,clps711x-gpio", clps711x_parse_dt),
+       ADD("ge,imp3a-gpio", compat_parse_dt),
+       ADD("gef,sbc310-gpio", compat_parse_dt),
+       ADD("gef,sbc610-gpio", compat_parse_dt),
+       ADD("moxa,moxart-gpio", compat_parse_dt),
+       ADD("technologic,ts4800-gpio", compat_parse_dt),
        { }
 };
 #undef ADD
diff --git a/drivers/gpio/gpio-moxart.c b/drivers/gpio/gpio-moxart.c
deleted file mode 100644
index d58d389..0000000
--- a/drivers/gpio/gpio-moxart.c
+++ /dev/null
@@ -1,84 +0,0 @@
-/*
- * MOXA ART SoCs GPIO driver.
- *
- * Copyright (C) 2013 Jonas Jensen
- *
- * Jonas Jensen <jonas.jen...@gmail.com>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2.  This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-
-#include <linux/err.h>
-#include <linux/init.h>
-#include <linux/irq.h>
-#include <linux/io.h>
-#include <linux/platform_device.h>
-#include <linux/of_address.h>
-#include <linux/of_gpio.h>
-#include <linux/pinctrl/consumer.h>
-#include <linux/delay.h>
-#include <linux/timer.h>
-#include <linux/bitops.h>
-#include <linux/gpio/driver.h>
-
-#define GPIO_DATA_OUT          0x00
-#define GPIO_DATA_IN           0x04
-#define GPIO_PIN_DIRECTION     0x08
-
-static int moxart_gpio_probe(struct platform_device *pdev)
-{
-       struct device *dev = &pdev->dev;
-       struct resource *res;
-       struct gpio_chip *gc;
-       void __iomem *base;
-       int ret;
-
-       gc = devm_kzalloc(dev, sizeof(*gc), GFP_KERNEL);
-       if (!gc)
-               return -ENOMEM;
-
-       res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-       base = devm_ioremap_resource(dev, res);
-       if (IS_ERR(base))
-               return PTR_ERR(base);
-
-       ret = bgpio_init(gc, dev, 4, base + GPIO_DATA_IN,
-                        base + GPIO_DATA_OUT, NULL,
-                        base + GPIO_PIN_DIRECTION, NULL,
-                        BGPIOF_READ_OUTPUT_REG_SET);
-       if (ret) {
-               dev_err(&pdev->dev, "bgpio_init failed\n");
-               return ret;
-       }
-
-       gc->label = "moxart-gpio";
-       gc->request = gpiochip_generic_request;
-       gc->free = gpiochip_generic_free;
-       gc->base = 0;
-       gc->owner = THIS_MODULE;
-
-       ret = devm_gpiochip_add_data(dev, gc, NULL);
-       if (ret) {
-               dev_err(dev, "%s: gpiochip_add failed\n",
-                       dev->of_node->full_name);
-               return ret;
-       }
-
-       return ret;
-}
-
-static const struct of_device_id moxart_gpio_match[] = {
-       { .compatible = "moxa,moxart-gpio" },
-       { }
-};
-
-static struct platform_driver moxart_gpio_driver = {
-       .driver = {
-               .name           = "moxart-gpio",
-               .of_match_table = moxart_gpio_match,
-       },
-       .probe  = moxart_gpio_probe,
-};
-builtin_platform_driver(moxart_gpio_driver);
diff --git a/drivers/gpio/gpio-ts4800.c b/drivers/gpio/gpio-ts4800.c
deleted file mode 100644
index 0c144a7..0000000
--- a/drivers/gpio/gpio-ts4800.c
+++ /dev/null
@@ -1,81 +0,0 @@
-/*
- * GPIO driver for the TS-4800 board
- *
- * Copyright (c) 2016 - Savoir-faire Linux
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-
-#include <linux/gpio/driver.h>
-#include <linux/of_address.h>
-#include <linux/of_device.h>
-#include <linux/platform_device.h>
-
-#define DEFAULT_PIN_NUMBER      16
-#define INPUT_REG_OFFSET        0x00
-#define OUTPUT_REG_OFFSET       0x02
-#define DIRECTION_REG_OFFSET    0x04
-
-static int ts4800_gpio_probe(struct platform_device *pdev)
-{
-       struct device_node *node;
-       struct gpio_chip *chip;
-       struct resource *res;
-       void __iomem *base_addr;
-       int retval;
-       u32 ngpios;
-
-       chip = devm_kzalloc(&pdev->dev, sizeof(struct gpio_chip), GFP_KERNEL);
-       if (!chip)
-               return -ENOMEM;
-
-       res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-       base_addr = devm_ioremap_resource(&pdev->dev, res);
-       if (IS_ERR(base_addr))
-               return PTR_ERR(base_addr);
-
-       node = pdev->dev.of_node;
-       if (!node)
-               return -EINVAL;
-
-       retval = of_property_read_u32(node, "ngpios", &ngpios);
-       if (retval == -EINVAL)
-               ngpios = DEFAULT_PIN_NUMBER;
-       else if (retval)
-               return retval;
-
-       retval = bgpio_init(chip, &pdev->dev, 2, base_addr + INPUT_REG_OFFSET,
-                           base_addr + OUTPUT_REG_OFFSET, NULL,
-                           base_addr + DIRECTION_REG_OFFSET, NULL, 0);
-       if (retval) {
-               dev_err(&pdev->dev, "bgpio_init failed\n");
-               return retval;
-       }
-
-       chip->ngpio = ngpios;
-
-       platform_set_drvdata(pdev, chip);
-
-       return devm_gpiochip_add_data(&pdev->dev, chip, NULL);
-}
-
-static const struct of_device_id ts4800_gpio_of_match[] = {
-       { .compatible = "technologic,ts4800-gpio", },
-       {},
-};
-
-static struct platform_driver ts4800_gpio_driver = {
-       .driver = {
-                  .name = "ts4800-gpio",
-                  .of_match_table = ts4800_gpio_of_match,
-                  },
-       .probe = ts4800_gpio_probe,
-};
-
-module_platform_driver_probe(ts4800_gpio_driver, ts4800_gpio_probe);
-
-MODULE_AUTHOR("Julien Grossholtz <julien.grossho...@savoirfairelinux.com>");
-MODULE_DESCRIPTION("TS4800 FPGA GPIO driver");
-MODULE_LICENSE("GPL v2");
-- 
2.8.1

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