Re: [PATCH v9 2/2] gpio: move clps711x, moxart, ts4800 and gpio-ge into gpio-mmio

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On Wed, May 11, 2016 at 12:34 PM, Christian Lamparter
<chunkeey@xxxxxxxxxxxxxx> wrote:
> This patch integrates the GPIO drivers for the following
> boards, SoCs, etc. into gpio-mmio:
>  - CLPS711X SoCs
>  - MOXA ART SoC
>  - TS-4800 FPGA DIO blocks and compatibles
>  - GPIO controllers found on some GE Single Board Computers
>
> Cc: Alexander Shiyan <shc_work@xxxxxxx>
> Cc: Julien Grossholtz <julien.grossholtz@xxxxxxxxxxxxxxxxxxxx>
> Cc: Martyn Welch <martyn.welch@xxxxxx>
> Cc: Jonas Jensen <jonas.jensen@xxxxxxxxx>
> Signed-off-by: Christian Lamparter <chunkeey@xxxxxxxxxxxxxx>

FWIW:
Reviewed-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>


> ---
>  drivers/gpio/Kconfig         |  16 +++-
>  drivers/gpio/Makefile        |   4 -
>  drivers/gpio/gpio-clps711x.c |  91 -------------------
>  drivers/gpio/gpio-ge.c       | 114 -----------------------
>  drivers/gpio/gpio-mmio.c     | 212 +++++++++++++++++++++++++++++++++++++++++++
>  drivers/gpio/gpio-moxart.c   |  84 -----------------
>  drivers/gpio/gpio-ts4800.c   |  81 -----------------
>  7 files changed, 224 insertions(+), 378 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 a68d838..e4d1065 100644
> --- a/drivers/gpio/Kconfig
> +++ b/drivers/gpio/Kconfig
> @@ -154,7 +154,7 @@ config GPIO_BRCMSTB
>  config GPIO_CLPS711X
>         tristate "CLPS711X GPIO support"
>         depends on ARCH_CLPS711X || COMPILE_TEST
> -       select GPIO_GENERIC
> +       select GPIO_GENERIC_PLATFORM
>         help
>           Say yes here to support GPIO on CLPS711X SoCs.
>
> @@ -196,7 +196,7 @@ config GPIO_ETRAXFS
>  config GPIO_GE_FPGA
>         bool "GE FPGA based GPIO"
>         depends on GE_FPGA
> -       select GPIO_GENERIC
> +       select GPIO_GENERIC_PLATFORM
>         help
>           Support for common GPIO functionality provided on some GE Single Board
>           Computers.
> @@ -209,6 +209,14 @@ 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
> @@ -288,7 +296,7 @@ config GPIO_MM_LANTIQ
>  config GPIO_MOXART
>         bool "MOXART GPIO support"
>         depends on ARCH_MOXART || COMPILE_TEST
> -       select GPIO_GENERIC
> +       select GPIO_GENERIC_PLATFORM
>         help
>           Select this option to enable GPIO driver for
>           MOXA ART SoC devices.
> @@ -408,7 +416,7 @@ config GPIO_TS4800
>         tristate "TS-4800 DIO blocks and compatibles"
>         depends on OF_GPIO
>         depends on SOC_IMX51 || COMPILE_TEST
> -       select GPIO_GENERIC
> +       select GPIO_GENERIC_PLATFORM
>         help
>           This driver support TS-4800 FPGA GPIO controllers.
>
> 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_work@xxxxxxx>
> - *
> - * 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_work@xxxxxxx>");
> -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.welch@xxxxxx>
> - *
> - * 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.welch@xxxxxx");
> -MODULE_LICENSE("GPL");
> diff --git a/drivers/gpio/gpio-mmio.c b/drivers/gpio/gpio-mmio.c
> index f72e40e..1de9172 100644
> --- a/drivers/gpio/gpio-mmio.c
> +++ b/drivers/gpio/gpio-mmio.c
> @@ -586,8 +586,220 @@ 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;
> +
> +       switch (id) {
> +       case 0:
> +       case 1:
> +       case 2:
> +               pdata->ngpio = 0; /* determined by register width */
> +               dir_reg_name = "dirout";
> +               break;
> +       case 3:
> +               pdata->ngpio = 0; /* determined by register width */
> +               /* PORTD is inverted logic for direction register */
> +               dir_reg_name = "dirin";
> +               break;
> +       case 4:
> +               pdata->ngpio = 3; /* PORTE is 3 lines only */
> +               dir_reg_name = "dirout";
> +               break;
> +       default:
> +               return -ENODEV;
> +       }
> +
> +       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;
> +               return 0;
> +       }
> +
> +       return err;
> +}
> +
> +/*
> + * bgpio_init() needs up to five named mmio register resources.
> + * These currently are dat, set, clr, [dirout | dirin]. There
> + * is no particular order or predefined place for the entries.
> + * However, dirout and dirin are mutually exclusive.
> + */
> +#define __NUM_COMPAT_OVERRIDE_MMIO_RESOURCES 4
> +
> +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[__NUM_COMPAT_OVERRIDE_MMIO_RESOURCES];
> +};
> +#undef __NUM_COMPAT_OVERRIDE_MMIO_RESOURCES
> +
> +#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)];
> +               size_t 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;
> +}
> +
>  static const struct of_device_id bgpio_of_match[] = {
>         { .compatible = "wd,mbl-gpio", .data = bgpio_basic_mmio_parse_dt },
> +       { .compatible = "cirrus,clps711x-gpio", .data = clps711x_parse_dt },
> +       { .compatible = "ge,imp3a-gpio", .data = compat_parse_dt },
> +       { .compatible = "gef,sbc310-gpio", .data = compat_parse_dt },
> +       { .compatible = "gef,sbc610-gpio", .data = compat_parse_dt },
> +       { .compatible = "moxa,moxart-gpio", .data = compat_parse_dt },
> +       { .compatible = "technologic,ts4800-gpio", .data = compat_parse_dt },
>         { }
>  };
>  MODULE_DEVICE_TABLE(of, bgpio_of_match);
> 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.jensen@xxxxxxxxx>
> - *
> - * 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.grossholtz@xxxxxxxxxxxxxxxxxxxx>");
> -MODULE_DESCRIPTION("TS4800 FPGA GPIO driver");
> -MODULE_LICENSE("GPL v2");
> --
> 2.8.1
>



-- 
With Best Regards,
Andy Shevchenko
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