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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Re: [PATCH v9 2/2] gpio: move clps711x, moxart, ts4800 and gpio-ge into gpio-mmio
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- Subject: Re: [PATCH v9 2/2] gpio: move clps711x, moxart, ts4800 and gpio-ge into gpio-mmio
- From: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>
- Date: Wed, 11 May 2016 15:19:58 +0300
- In-reply-to: <85c74586dbd0023306f012764b85d6aa168b4ae7.1462911225.git.chunkeey@googlemail.com>
- References:
- [PATCH v9 0/2] gpio: add DT support for memory-mapped GPIOs
- From: Christian Lamparter
- [PATCH v9 2/2] gpio: move clps711x, moxart, ts4800 and gpio-ge into gpio-mmio
- From: Christian Lamparter
- [PATCH v9 0/2] gpio: add DT support for memory-mapped GPIOs
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