lkml.org 
[lkml]   [2016]   [May]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v8 3/3] gpio: move clps711x, moxart, ts4800 and gpio-ge into gpio-mmio
Date
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@mail.ru>
Cc: Julien Grossholtz <julien.grossholtz@savoirfairelinux.com>
Cc: Martyn Welch <martyn.welch@ge.com>
Cc: Jonas Jensen <jonas.jensen@gmail.com>
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
---
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@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_work@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.welch@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.welch@ge.com");
-MODULE_LICENSE("GPL");
diff --git a/drivers/gpio/gpio-mmio.c b/drivers/gpio/gpio-mmio.c
index 4b7b74c..d1a7666 100644
--- a/drivers/gpio/gpio-mmio.c
+++ b/drivers/gpio/gpio-mmio.c
@@ -587,10 +587,222 @@ 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;
+}
+
#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.jensen@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.grossholtz@savoirfairelinux.com>");
-MODULE_DESCRIPTION("TS4800 FPGA GPIO driver");
-MODULE_LICENSE("GPL v2");
--
2.8.1
\
 
 \ /
  Last update: 2016-05-08 15:41    [W:0.083 / U:0.292 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site