diff options
Diffstat (limited to 'drivers/gpio/gpio-mcp23s08.c')
| -rw-r--r-- | drivers/gpio/gpio-mcp23s08.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/drivers/gpio/gpio-mcp23s08.c b/drivers/gpio/gpio-mcp23s08.c index f8d4abcff573..971915830d7f 100644 --- a/drivers/gpio/gpio-mcp23s08.c +++ b/drivers/gpio/gpio-mcp23s08.c @@ -31,6 +31,7 @@ #define MCP_TYPE_S17 1 #define MCP_TYPE_008 2 #define MCP_TYPE_017 3 +#define MCP_TYPE_S18 4 /* Registers are all 8 bits wide. * @@ -617,6 +618,12 @@ static int mcp23s08_probe_one(struct mcp23s08 *mcp, struct device *dev, mcp->chip.ngpio = 16; mcp->chip.label = "mcp23s17"; break; + + case MCP_TYPE_S18: + mcp->ops = &mcp23s17_ops; + mcp->chip.ngpio = 16; + mcp->chip.label = "mcp23s18"; + break; #endif /* CONFIG_SPI_MASTER */ #if IS_ENABLED(CONFIG_I2C) @@ -657,8 +664,7 @@ static int mcp23s08_probe_one(struct mcp23s08 *mcp, struct device *dev, of_property_read_bool(mcp->chip.parent->of_node, "microchip,irq-active-high"); - if (type == MCP_TYPE_017) - mirror = pdata->mirror; + mirror = pdata->mirror; } if ((status & IOCON_SEQOP) || !(status & IOCON_HAEN) || mirror || @@ -735,6 +741,10 @@ static const struct of_device_id mcp23s08_spi_of_match[] = { .compatible = "microchip,mcp23s17", .data = (void *) MCP_TYPE_S17, }, + { + .compatible = "microchip,mcp23s18", + .data = (void *) MCP_TYPE_S18, + }, /* NOTE: The use of the mcp prefix is deprecated and will be removed. */ { .compatible = "mcp,mcp23s08", @@ -971,8 +981,8 @@ static int mcp23s08_probe(struct spi_device *spi) goto fail; if (pdata->base != -1) - pdata->base += (type == MCP_TYPE_S17) ? 16 : 8; - ngpio += (type == MCP_TYPE_S17) ? 16 : 8; + pdata->base += data->mcp[addr]->chip.ngpio; + ngpio += data->mcp[addr]->chip.ngpio; } data->ngpio = ngpio; @@ -1014,6 +1024,7 @@ static int mcp23s08_remove(struct spi_device *spi) static const struct spi_device_id mcp23s08_ids[] = { { "mcp23s08", MCP_TYPE_S08 }, { "mcp23s17", MCP_TYPE_S17 }, + { "mcp23s18", MCP_TYPE_S18 }, { }, }; MODULE_DEVICE_TABLE(spi, mcp23s08_ids); |