mirror of
https://github.com/torvalds/linux.git
synced 2024-11-21 11:35:45 +00:00
aeca17561d
pcim_iomap_regions() and pcim_iomap_table() have been deprecated in
commit e354bb84a4 ("PCI: Deprecate pcim_iomap_table(),
pcim_iomap_regions_request_all()"). Replace these functions with
pcim_iomap_region().
In order to match the rest of the code in idio_16_probe(), utilize
dev_err_probe() to handle error for pcim_enable_device().
Signed-off-by: William Breathitt Gray <wbg@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20241101-pci_iomap_region_gpio_acces-v1-1-26eb1dc93e45@kernel.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
116 lines
3.6 KiB
C
116 lines
3.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* GPIO driver for the ACCES PCI-IDIO-16
|
|
* Copyright (C) 2017 William Breathitt Gray
|
|
*/
|
|
#include <linux/bits.h>
|
|
#include <linux/device.h>
|
|
#include <linux/err.h>
|
|
#include <linux/irq.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/regmap.h>
|
|
#include <linux/types.h>
|
|
|
|
#include "gpio-idio-16.h"
|
|
|
|
static const struct regmap_range idio_16_wr_ranges[] = {
|
|
regmap_reg_range(0x0, 0x2), regmap_reg_range(0x3, 0x4),
|
|
};
|
|
static const struct regmap_range idio_16_rd_ranges[] = {
|
|
regmap_reg_range(0x1, 0x2), regmap_reg_range(0x5, 0x6),
|
|
};
|
|
static const struct regmap_range idio_16_precious_ranges[] = {
|
|
regmap_reg_range(0x2, 0x2),
|
|
};
|
|
static const struct regmap_access_table idio_16_wr_table = {
|
|
.yes_ranges = idio_16_wr_ranges,
|
|
.n_yes_ranges = ARRAY_SIZE(idio_16_wr_ranges),
|
|
};
|
|
static const struct regmap_access_table idio_16_rd_table = {
|
|
.yes_ranges = idio_16_rd_ranges,
|
|
.n_yes_ranges = ARRAY_SIZE(idio_16_rd_ranges),
|
|
};
|
|
static const struct regmap_access_table idio_16_precious_table = {
|
|
.yes_ranges = idio_16_precious_ranges,
|
|
.n_yes_ranges = ARRAY_SIZE(idio_16_precious_ranges),
|
|
};
|
|
static const struct regmap_config idio_16_regmap_config = {
|
|
.reg_bits = 8,
|
|
.reg_stride = 1,
|
|
.val_bits = 8,
|
|
.io_port = true,
|
|
.wr_table = &idio_16_wr_table,
|
|
.rd_table = &idio_16_rd_table,
|
|
.volatile_table = &idio_16_rd_table,
|
|
.precious_table = &idio_16_precious_table,
|
|
.cache_type = REGCACHE_FLAT,
|
|
.use_raw_spinlock = true,
|
|
};
|
|
|
|
/* Only input lines (GPIO 16-31) support interrupts */
|
|
#define IDIO_16_REGMAP_IRQ(_id) \
|
|
[16 + _id] = { \
|
|
.mask = BIT(2), \
|
|
.type = { .types_supported = IRQ_TYPE_EDGE_BOTH }, \
|
|
}
|
|
|
|
static const struct regmap_irq idio_16_regmap_irqs[] = {
|
|
IDIO_16_REGMAP_IRQ(0), IDIO_16_REGMAP_IRQ(1), IDIO_16_REGMAP_IRQ(2), /* 0-2 */
|
|
IDIO_16_REGMAP_IRQ(3), IDIO_16_REGMAP_IRQ(4), IDIO_16_REGMAP_IRQ(5), /* 3-5 */
|
|
IDIO_16_REGMAP_IRQ(6), IDIO_16_REGMAP_IRQ(7), IDIO_16_REGMAP_IRQ(8), /* 6-8 */
|
|
IDIO_16_REGMAP_IRQ(9), IDIO_16_REGMAP_IRQ(10), IDIO_16_REGMAP_IRQ(11), /* 9-11 */
|
|
IDIO_16_REGMAP_IRQ(12), IDIO_16_REGMAP_IRQ(13), IDIO_16_REGMAP_IRQ(14), /* 12-14 */
|
|
IDIO_16_REGMAP_IRQ(15), /* 15 */
|
|
};
|
|
|
|
static int idio_16_probe(struct pci_dev *pdev, const struct pci_device_id *id)
|
|
{
|
|
struct device *const dev = &pdev->dev;
|
|
int err;
|
|
const size_t pci_bar_index = 2;
|
|
struct idio_16_regmap_config config = {};
|
|
void __iomem *regs;
|
|
struct regmap *map;
|
|
|
|
err = pcim_enable_device(pdev);
|
|
if (err)
|
|
return dev_err_probe(dev, err, "Failed to enable PCI device\n");
|
|
|
|
regs = pcim_iomap_region(pdev, pci_bar_index, pci_name(pdev));
|
|
if (IS_ERR(regs))
|
|
return dev_err_probe(dev, PTR_ERR(regs), "Unable to map PCI I/O addresses\n");
|
|
|
|
map = devm_regmap_init_mmio(dev, regs, &idio_16_regmap_config);
|
|
if (IS_ERR(map))
|
|
return dev_err_probe(dev, PTR_ERR(map), "Unable to initialize register map\n");
|
|
|
|
config.parent = dev;
|
|
config.map = map;
|
|
config.regmap_irqs = idio_16_regmap_irqs;
|
|
config.num_regmap_irqs = ARRAY_SIZE(idio_16_regmap_irqs);
|
|
config.irq = pdev->irq;
|
|
config.filters = true;
|
|
|
|
return devm_idio_16_regmap_register(dev, &config);
|
|
}
|
|
|
|
static const struct pci_device_id idio_16_pci_dev_id[] = {
|
|
{ PCI_DEVICE(0x494F, 0x0DC8) }, { 0 }
|
|
};
|
|
MODULE_DEVICE_TABLE(pci, idio_16_pci_dev_id);
|
|
|
|
static struct pci_driver idio_16_driver = {
|
|
.name = "pci-idio-16",
|
|
.id_table = idio_16_pci_dev_id,
|
|
.probe = idio_16_probe
|
|
};
|
|
|
|
module_pci_driver(idio_16_driver);
|
|
|
|
MODULE_AUTHOR("William Breathitt Gray <vilhelm.gray@gmail.com>");
|
|
MODULE_DESCRIPTION("ACCES PCI-IDIO-16 GPIO driver");
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_IMPORT_NS(GPIO_IDIO_16);
|