^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /* MCP23S08 SPI GPIO driver */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) #include <linux/mod_devicetable.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <linux/property.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/regmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/spi/spi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include "pinctrl-mcp23s08.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #define MCP_MAX_DEV_PER_CS 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * A given spi_device can represent up to eight mcp23sxx chips
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * sharing the same chipselect but using different addresses
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * (e.g. chips #0 and #3 might be populated, but not #1 or #2).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * Driver data holds all the per-chip data.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) struct mcp23s08_driver_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) unsigned ngpio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) struct mcp23s08 *mcp[8];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) struct mcp23s08 chip[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) static int mcp23sxx_spi_write(void *context, const void *data, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) struct mcp23s08 *mcp = context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) struct spi_device *spi = to_spi_device(mcp->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) struct spi_message m;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) struct spi_transfer t[2] = { { .tx_buf = &mcp->addr, .len = 1, },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) { .tx_buf = data, .len = count, }, };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) spi_message_init(&m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) spi_message_add_tail(&t[0], &m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) spi_message_add_tail(&t[1], &m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) return spi_sync(spi, &m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) static int mcp23sxx_spi_gather_write(void *context,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) const void *reg, size_t reg_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) const void *val, size_t val_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) struct mcp23s08 *mcp = context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) struct spi_device *spi = to_spi_device(mcp->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) struct spi_message m;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) struct spi_transfer t[3] = { { .tx_buf = &mcp->addr, .len = 1, },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) { .tx_buf = reg, .len = reg_size, },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) { .tx_buf = val, .len = val_size, }, };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) spi_message_init(&m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) spi_message_add_tail(&t[0], &m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) spi_message_add_tail(&t[1], &m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) spi_message_add_tail(&t[2], &m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) return spi_sync(spi, &m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) static int mcp23sxx_spi_read(void *context, const void *reg, size_t reg_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) void *val, size_t val_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) struct mcp23s08 *mcp = context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) struct spi_device *spi = to_spi_device(mcp->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) u8 tx[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) if (reg_size != 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) tx[0] = mcp->addr | 0x01;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) tx[1] = *((u8 *) reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) return spi_write_then_read(spi, tx, sizeof(tx), val, val_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) static const struct regmap_bus mcp23sxx_spi_regmap = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) .write = mcp23sxx_spi_write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) .gather_write = mcp23sxx_spi_gather_write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) .read = mcp23sxx_spi_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) static int mcp23s08_spi_regmap_init(struct mcp23s08 *mcp, struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) unsigned int addr, unsigned int type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) const struct regmap_config *config;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) struct regmap_config *copy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) const char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) switch (type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) case MCP_TYPE_S08:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) mcp->reg_shift = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) mcp->chip.ngpio = 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) mcp->chip.label = devm_kasprintf(dev, GFP_KERNEL, "mcp23s08.%d", addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) config = &mcp23x08_regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) name = devm_kasprintf(dev, GFP_KERNEL, "%d", addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) case MCP_TYPE_S17:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) mcp->reg_shift = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) mcp->chip.ngpio = 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) mcp->chip.label = devm_kasprintf(dev, GFP_KERNEL, "mcp23s17.%d", addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) config = &mcp23x17_regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) name = devm_kasprintf(dev, GFP_KERNEL, "%d", addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) case MCP_TYPE_S18:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) mcp->reg_shift = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) mcp->chip.ngpio = 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) mcp->chip.label = "mcp23s18";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) config = &mcp23x17_regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) name = config->name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) dev_err(dev, "invalid device type (%d)\n", type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) copy = devm_kmemdup(dev, config, sizeof(*config), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) if (!copy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) copy->name = name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) mcp->regmap = devm_regmap_init(dev, &mcp23sxx_spi_regmap, mcp, copy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) if (IS_ERR(mcp->regmap))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) dev_err(dev, "regmap init failed for %s\n", mcp->chip.label);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) return PTR_ERR_OR_ZERO(mcp->regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) static int mcp23s08_probe(struct spi_device *spi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) struct device *dev = &spi->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) struct mcp23s08_driver_data *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) unsigned long spi_present_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) const void *match;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) unsigned int addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) unsigned int ngpio = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) int chips;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) int type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) u32 v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) match = device_get_match_data(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) if (match)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) type = (int)(uintptr_t)match;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) type = spi_get_device_id(spi)->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) ret = device_property_read_u32(dev, "microchip,spi-present-mask", &v);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) ret = device_property_read_u32(dev, "mcp,spi-present-mask", &v);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) dev_err(dev, "missing spi-present-mask");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) spi_present_mask = v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) if (!spi_present_mask || spi_present_mask >= BIT(MCP_MAX_DEV_PER_CS)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) dev_err(dev, "invalid spi-present-mask");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) chips = hweight_long(spi_present_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) data = devm_kzalloc(dev, struct_size(data, chip, chips), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) if (!data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) spi_set_drvdata(spi, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) for_each_set_bit(addr, &spi_present_mask, MCP_MAX_DEV_PER_CS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) data->mcp[addr] = &data->chip[--chips];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) data->mcp[addr]->irq = spi->irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) ret = mcp23s08_spi_regmap_init(data->mcp[addr], dev, addr, type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) data->mcp[addr]->pinctrl_desc.name = devm_kasprintf(dev, GFP_KERNEL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) "mcp23xxx-pinctrl.%d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) if (!data->mcp[addr]->pinctrl_desc.name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) ret = mcp23s08_probe_one(data->mcp[addr], dev, 0x40 | (addr << 1), type, -1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) ngpio += data->mcp[addr]->chip.ngpio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) data->ngpio = ngpio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) static const struct spi_device_id mcp23s08_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) { "mcp23s08", MCP_TYPE_S08 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) { "mcp23s17", MCP_TYPE_S17 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) { "mcp23s18", MCP_TYPE_S18 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) MODULE_DEVICE_TABLE(spi, mcp23s08_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) static const struct of_device_id mcp23s08_spi_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) .compatible = "microchip,mcp23s08",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) .data = (void *) MCP_TYPE_S08,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) .compatible = "microchip,mcp23s17",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) .data = (void *) MCP_TYPE_S17,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) .compatible = "microchip,mcp23s18",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) .data = (void *) MCP_TYPE_S18,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) /* NOTE: The use of the mcp prefix is deprecated and will be removed. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) .compatible = "mcp,mcp23s08",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) .data = (void *) MCP_TYPE_S08,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) .compatible = "mcp,mcp23s17",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) .data = (void *) MCP_TYPE_S17,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) MODULE_DEVICE_TABLE(of, mcp23s08_spi_of_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) static struct spi_driver mcp23s08_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) .probe = mcp23s08_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) .id_table = mcp23s08_ids,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) .name = "mcp23s08",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) .of_match_table = mcp23s08_spi_of_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) static int __init mcp23s08_spi_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) return spi_register_driver(&mcp23s08_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) * Register after SPI postcore initcall and before
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) * subsys initcalls that may rely on these GPIOs.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) subsys_initcall(mcp23s08_spi_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) static void mcp23s08_spi_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) spi_unregister_driver(&mcp23s08_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) module_exit(mcp23s08_spi_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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