Skip to content

L
linux
Commit dc101086 authored by Tony Prisk's avatar Tony Prisk
Browse files
Options

gpio: vt8500: Remove arch-vt8500 gpio driver 

With the move to a combined pinctrl/gpio driver, the arch-vt8500
gpio driver is no longer required.
Signed-off-by: default avatarTony Prisk <linux@prisktech.co.nz>
Acked-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent eaa2bada
Hide whitespace changes
Inline Side-by-side
Showing with 0 additions and 386 deletions
Documentation/devicetree/bindings/gpio/gpio-vt8500.txt deleted 100644 → 0
View file @ eaa2bada
VIA/Wondermedia VT8500 GPIO Controller
-----------------------------------------------------
Required properties:
- compatible : "via,vt8500-gpio", "wm,wm8505-gpio"
or "wm,wm8650-gpio" depending on your SoC
- reg : Should contain 1 register range (address and length)
- #gpio-cells : should be <3>.
1) bank
2) pin number
3) flags - should be 0
Example:
gpio: gpio-controller@d8110000 {
compatible = "via,vt8500-gpio";
gpio-controller;
reg = <0xd8110000 0x10000>;
#gpio-cells = <3>;
};
vibrate {
gpios = <&gpio 0 1 0>; /* Bank 0, Pin 1, No flags */
};
drivers/gpio/Kconfig
View file @ dc101086
......@@ -227,12 +227,6 @@ config GPIO_TS5500
blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
LCD port.
config GPIO_VT8500
bool "VIA/Wondermedia SoC GPIO Support"
depends on ARCH_VT8500
help
Say yes here to support the VT8500/WM8505/WM8650 GPIO controller.
config GPIO_XILINX
bool "Xilinx GPIO support"
depends on PPC_OF || MICROBLAZE
......
drivers/gpio/Makefile
View file @ dc101086
......@@ -80,7 +80,6 @@ obj-$(CONFIG_GPIO_TWL6040) += gpio-twl6040.o
obj-$(CONFIG_GPIO_UCB1400) += gpio-ucb1400.o
obj-$(CONFIG_GPIO_VIPERBOARD) += gpio-viperboard.o
obj-$(CONFIG_GPIO_VR41XX) += gpio-vr41xx.o
obj-$(CONFIG_GPIO_VT8500) += gpio-vt8500.o
obj-$(CONFIG_GPIO_VX855) += gpio-vx855.o
obj-$(CONFIG_GPIO_WM831X) += gpio-wm831x.o
obj-$(CONFIG_GPIO_WM8350) += gpio-wm8350.o
......
drivers/gpio/gpio-vt8500.c deleted 100644 → 0
View file @ eaa2bada
/* drivers/gpio/gpio-vt8500.c
*
* Copyright (C) 2012 Tony Prisk <linux@prisktech.co.nz>
* Based on arch/arm/mach-vt8500/gpio.c:
* - Copyright (C) 2010 Alexey Charkov <alchark@gmail.com>
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <linux/module.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/gpio.h>
#include <linux/platform_device.h>
#include <linux/bitops.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/of_device.h>
/*
We handle GPIOs by bank, each bank containing up to 32 GPIOs covered
by one set of registers (although not all may be valid).
Because different SoC's have different register offsets, we pass the
register offsets as data in vt8500_gpio_dt_ids[].
A value of NO_REG is used to indicate that this register is not
supported. Only used for ->en at the moment.
*/
#define NO_REG 0xFFFF
/*
* struct vt8500_gpio_bank_regoffsets
* @en: offset to enable register of the bank
* @dir: offset to direction register of the bank
* @data_out: offset to the data out register of the bank
* @data_in: offset to the data in register of the bank
* @ngpio: highest valid pin in this bank
*/
struct vt8500_gpio_bank_regoffsets {
unsigned int en;
unsigned int dir;
unsigned int data_out;
unsigned int data_in;
unsigned char ngpio;
};
struct vt8500_gpio_data {
unsigned int num_banks;
struct vt8500_gpio_bank_regoffsets banks[];
};
#define VT8500_BANK(__en, __dir, __out, __in, __ngpio) \
{ \
.en = __en, \
.dir = __dir, \
.data_out = __out, \
.data_in = __in, \
.ngpio = __ngpio, \
}
static struct vt8500_gpio_data vt8500_data = {
.num_banks = 7,
.banks = {
VT8500_BANK(NO_REG, 0x3C, 0x5C, 0x7C, 9),
VT8500_BANK(0x00, 0x20, 0x40, 0x60, 26),
VT8500_BANK(0x04, 0x24, 0x44, 0x64, 28),
VT8500_BANK(0x08, 0x28, 0x48, 0x68, 31),
VT8500_BANK(0x0C, 0x2C, 0x4C, 0x6C, 19),
VT8500_BANK(0x10, 0x30, 0x50, 0x70, 19),
VT8500_BANK(0x14, 0x34, 0x54, 0x74, 23),
},
};
static struct vt8500_gpio_data wm8505_data = {
.num_banks = 10,
.banks = {
VT8500_BANK(0x64, 0x8C, 0xB4, 0xDC, 22),
VT8500_BANK(0x40, 0x68, 0x90, 0xB8, 8),
VT8500_BANK(0x44, 0x6C, 0x94, 0xBC, 32),
VT8500_BANK(0x48, 0x70, 0x98, 0xC0, 6),
VT8500_BANK(0x4C, 0x74, 0x9C, 0xC4, 16),
VT8500_BANK(0x50, 0x78, 0xA0, 0xC8, 25),
VT8500_BANK(0x54, 0x7C, 0xA4, 0xCC, 5),
VT8500_BANK(0x58, 0x80, 0xA8, 0xD0, 5),
VT8500_BANK(0x5C, 0x84, 0xAC, 0xD4, 12),
VT8500_BANK(0x60, 0x88, 0xB0, 0xD8, 16),
VT8500_BANK(0x500, 0x504, 0x508, 0x50C, 6),
},
};
/*
* No information about which bits are valid so we just make
* them all available until its figured out.
*/
static struct vt8500_gpio_data wm8650_data = {
.num_banks = 9,
.banks = {
VT8500_BANK(0x40, 0x80, 0xC0, 0x00, 32),
VT8500_BANK(0x44, 0x84, 0xC4, 0x04, 32),
VT8500_BANK(0x48, 0x88, 0xC8, 0x08, 32),
VT8500_BANK(0x4C, 0x8C, 0xCC, 0x0C, 32),
VT8500_BANK(0x50, 0x90, 0xD0, 0x10, 32),
VT8500_BANK(0x54, 0x94, 0xD4, 0x14, 32),
VT8500_BANK(0x58, 0x98, 0xD8, 0x18, 32),
VT8500_BANK(0x5C, 0x9C, 0xDC, 0x1C, 32),
VT8500_BANK(0x7C, 0xBC, 0xFC, 0x3C, 32),
VT8500_BANK(0x500, 0x504, 0x508, 0x50C, 6),
},
};
struct vt8500_gpio_chip {
struct gpio_chip chip;
const struct vt8500_gpio_bank_regoffsets *regs;
void __iomem *base;
};
struct vt8500_data {
struct vt8500_gpio_chip *chip;
void __iomem *iobase;
int num_banks;
};
#define to_vt8500(__chip) container_of(__chip, struct vt8500_gpio_chip, chip)
static int vt8500_gpio_request(struct gpio_chip *chip, unsigned offset)
{
u32 val;
struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip);
if (vt8500_chip->regs->en == NO_REG)
return 0;
val = readl_relaxed(vt8500_chip->base + vt8500_chip->regs->en);
val |= BIT(offset);
writel_relaxed(val, vt8500_chip->base + vt8500_chip->regs->en);
return 0;
}
static void vt8500_gpio_free(struct gpio_chip *chip, unsigned offset)
{
struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip);
u32 val;
if (vt8500_chip->regs->en == NO_REG)
return;
val = readl_relaxed(vt8500_chip->base + vt8500_chip->regs->en);
val &= ~BIT(offset);
writel_relaxed(val, vt8500_chip->base + vt8500_chip->regs->en);
}
static int vt8500_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
{
struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip);
u32 val = readl_relaxed(vt8500_chip->base + vt8500_chip->regs->dir);
val &= ~BIT(offset);
writel_relaxed(val, vt8500_chip->base + vt8500_chip->regs->dir);
return 0;
}
static int vt8500_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
int value)
{
struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip);
u32 val = readl_relaxed(vt8500_chip->base + vt8500_chip->regs->dir);
val |= BIT(offset);
writel_relaxed(val, vt8500_chip->base + vt8500_chip->regs->dir);
if (value) {
val = readl_relaxed(vt8500_chip->base +
vt8500_chip->regs->data_out);
val |= BIT(offset);
writel_relaxed(val, vt8500_chip->base +
vt8500_chip->regs->data_out);
}
return 0;
}
static int vt8500_gpio_get_value(struct gpio_chip *chip, unsigned offset)
{
struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip);
return (readl_relaxed(vt8500_chip->base + vt8500_chip->regs->data_in) >>
offset) & 1;
}
static void vt8500_gpio_set_value(struct gpio_chip *chip, unsigned offset,
int value)
{
struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip);
u32 val = readl_relaxed(vt8500_chip->base +
vt8500_chip->regs->data_out);
if (value)
val |= BIT(offset);
else
val &= ~BIT(offset);
writel_relaxed(val, vt8500_chip->base + vt8500_chip->regs->data_out);
}
static int vt8500_of_xlate(struct gpio_chip *gc,
const struct of_phandle_args *gpiospec, u32 *flags)
{
/* bank if specificed in gpiospec->args[0] */
if (flags)
*flags = gpiospec->args[2];
return gpiospec->args[1];
}
static int vt8500_add_chips(struct platform_device *pdev, void __iomem *base,
const struct vt8500_gpio_data *data)
{
struct vt8500_data *priv;
struct vt8500_gpio_chip *vtchip;
struct gpio_chip *chip;
int i;
int pin_cnt = 0;
priv = devm_kzalloc(&pdev->dev, sizeof(struct vt8500_data), GFP_KERNEL);
if (!priv) {
dev_err(&pdev->dev, "failed to allocate memory\n");
return -ENOMEM;
}
priv->chip = devm_kzalloc(&pdev->dev,
sizeof(struct vt8500_gpio_chip) * data->num_banks,
GFP_KERNEL);
if (!priv->chip) {
dev_err(&pdev->dev, "failed to allocate chip memory\n");
return -ENOMEM;
}
priv->iobase = base;
priv->num_banks = data->num_banks;
platform_set_drvdata(pdev, priv);
vtchip = priv->chip;
for (i = 0; i < data->num_banks; i++) {
vtchip[i].base = base;
vtchip[i].regs = &data->banks[i];
chip = &vtchip[i].chip;
chip->of_xlate = vt8500_of_xlate;
chip->of_gpio_n_cells = 3;
chip->of_node = pdev->dev.of_node;
chip->request = vt8500_gpio_request;
chip->free = vt8500_gpio_free;
chip->direction_input = vt8500_gpio_direction_input;
chip->direction_output = vt8500_gpio_direction_output;
chip->get = vt8500_gpio_get_value;
chip->set = vt8500_gpio_set_value;
chip->can_sleep = 0;
chip->base = pin_cnt;
chip->ngpio = data->banks[i].ngpio;
pin_cnt += data->banks[i].ngpio;
gpiochip_add(chip);
}
return 0;
}
static struct of_device_id vt8500_gpio_dt_ids[] = {
{ .compatible = "via,vt8500-gpio", .data = &vt8500_data, },
{ .compatible = "wm,wm8505-gpio", .data = &wm8505_data, },
{ .compatible = "wm,wm8650-gpio", .data = &wm8650_data, },
{ /* Sentinel */ },
};
static int vt8500_gpio_probe(struct platform_device *pdev)
{
int ret;
void __iomem *gpio_base;
struct resource *res;
const struct of_device_id *of_id =
of_match_device(vt8500_gpio_dt_ids, &pdev->dev);
if (!of_id) {
dev_err(&pdev->dev, "No matching driver data\n");
return -ENODEV;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(&pdev->dev, "Unable to get IO resource\n");
return -ENODEV;
}
gpio_base = devm_request_and_ioremap(&pdev->dev, res);
if (!gpio_base) {
dev_err(&pdev->dev, "Unable to map GPIO registers\n");
return -ENOMEM;
}
ret = vt8500_add_chips(pdev, gpio_base, of_id->data);
return ret;
}
static int vt8500_gpio_remove(struct platform_device *pdev)
{
int i;
int ret;
struct vt8500_data *priv = platform_get_drvdata(pdev);
struct vt8500_gpio_chip *vtchip = priv->chip;
for (i = 0; i < priv->num_banks; i++) {
ret = gpiochip_remove(&vtchip[i].chip);
if (ret)
dev_warn(&pdev->dev, "gpiochip_remove returned %d\n",
ret);
}
return 0;
}
static struct platform_driver vt8500_gpio_driver = {
.probe = vt8500_gpio_probe,
.remove = vt8500_gpio_remove,
.driver = {
.name = "vt8500-gpio",
.owner = THIS_MODULE,
.of_match_table = vt8500_gpio_dt_ids,
},
};
module_platform_driver(vt8500_gpio_driver);
MODULE_DESCRIPTION("VT8500 GPIO Driver");
MODULE_AUTHOR("Tony Prisk <linux@prisktech.co.nz>");
MODULE_LICENSE("GPL v2");
MODULE_DEVICE_TABLE(of, vt8500_gpio_dt_ids);
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7