From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- drivers/gpio/gpio-104-idio-16.c | 129 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 129 insertions(+) create mode 100644 drivers/gpio/gpio-104-idio-16.c (limited to 'drivers/gpio/gpio-104-idio-16.c') diff --git a/drivers/gpio/gpio-104-idio-16.c b/drivers/gpio/gpio-104-idio-16.c new file mode 100644 index 0000000000..f03ccd0f53 --- /dev/null +++ b/drivers/gpio/gpio-104-idio-16.c @@ -0,0 +1,129 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * GPIO driver for the ACCES 104-IDIO-16 family + * Copyright (C) 2015 William Breathitt Gray + * + * This driver supports the following ACCES devices: 104-IDIO-16, + * 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, and 104-IDO-8. + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "gpio-idio-16.h" + +#define IDIO_16_EXTENT 8 +#define MAX_NUM_IDIO_16 max_num_isa_dev(IDIO_16_EXTENT) + +static unsigned int base[MAX_NUM_IDIO_16]; +static unsigned int num_idio_16; +module_param_hw_array(base, uint, ioport, &num_idio_16, 0); +MODULE_PARM_DESC(base, "ACCES 104-IDIO-16 base addresses"); + +static unsigned int irq[MAX_NUM_IDIO_16]; +static unsigned int num_irq; +module_param_hw_array(irq, uint, irq, &num_irq, 0); +MODULE_PARM_DESC(irq, "ACCES 104-IDIO-16 interrupt line numbers"); + +static const struct regmap_range idio_16_wr_ranges[] = { + regmap_reg_range(0x0, 0x2), regmap_reg_range(0x4, 0x4), +}; +static const struct regmap_range idio_16_rd_ranges[] = { + regmap_reg_range(0x1, 0x2), regmap_reg_range(0x5, 0x5), +}; +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(_id), \ + .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 device *dev, unsigned int id) +{ + const char *const name = dev_name(dev); + struct idio_16_regmap_config config = {}; + void __iomem *regs; + struct regmap *map; + + if (!devm_request_region(dev, base[id], IDIO_16_EXTENT, name)) { + dev_err(dev, "Unable to lock port addresses (0x%X-0x%X)\n", + base[id], base[id] + IDIO_16_EXTENT); + return -EBUSY; + } + + regs = devm_ioport_map(dev, base[id], IDIO_16_EXTENT); + if (!regs) + return -ENOMEM; + + 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 = irq[id]; + config.no_status = true; + + return devm_idio_16_regmap_register(dev, &config); +} + +static struct isa_driver idio_16_driver = { + .probe = idio_16_probe, + .driver = { + .name = "104-idio-16" + }, +}; + +module_isa_driver_with_irq(idio_16_driver, num_idio_16, num_irq); + +MODULE_AUTHOR("William Breathitt Gray "); +MODULE_DESCRIPTION("ACCES 104-IDIO-16 GPIO driver"); +MODULE_LICENSE("GPL v2"); +MODULE_IMPORT_NS(GPIO_IDIO_16); -- cgit v1.2.3