redonkable/alistair23-linux
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gpio: mcp23s08: add support for mcp23018

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This adds the required definitions for the mcp23018 which is the i2c
variant of the mcp23s18.

Signed-off-by: Phil Reid <preid@electromag.com.au>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Phil Reid 2017-10-06 13:08:07 +08:00 committed by Linus Walleij
parent 350bdb84fd
commit ff0f2ce71c
1 changed files with 14 additions and 1 deletions
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15
drivers/pinctrl/pinctrl-mcp23s08.c
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@ -25,6 +25,7 @@
#define MCP_TYPE_008 2 #define MCP_TYPE_008 2
#define MCP_TYPE_017 3 #define MCP_TYPE_017 3
#define MCP_TYPE_S18 4 #define MCP_TYPE_S18 4
#define MCP_TYPE_018 5
#define MCP_MAX_DEV_PER_CS 8 #define MCP_MAX_DEV_PER_CS 8
@ -834,6 +835,13 @@ static int mcp23s08_probe_one(struct mcp23s08 *mcp, struct device *dev,
mcp->chip.ngpio = 16; mcp->chip.ngpio = 16;
mcp->chip.label = "mcp23017"; mcp->chip.label = "mcp23017";
break; break;
case MCP_TYPE_018:
mcp->regmap = devm_regmap_init_i2c(data, &mcp23x17_regmap);
mcp->reg_shift = 1;
mcp->chip.ngpio = 16;
mcp->chip.label = "mcp23018";
break;
#endif /* CONFIG_I2C */ #endif /* CONFIG_I2C */
default: default:
@ -880,7 +888,7 @@ static int mcp23s08_probe_one(struct mcp23s08 *mcp, struct device *dev,
if (mirror) if (mirror)
status |= IOCON_MIRROR | (IOCON_MIRROR << 8); status |= IOCON_MIRROR | (IOCON_MIRROR << 8);
if (type == MCP_TYPE_S18) if (type == MCP_TYPE_S18 || type == MCP_TYPE_018)
status |= IOCON_INTCC | (IOCON_INTCC << 8); status |= IOCON_INTCC | (IOCON_INTCC << 8);
ret = mcp_write(mcp, MCP_IOCON, status); ret = mcp_write(mcp, MCP_IOCON, status);
@ -961,6 +969,10 @@ static const struct of_device_id mcp23s08_i2c_of_match[] = {
.compatible = "microchip,mcp23017", .compatible = "microchip,mcp23017",
.data = (void *) MCP_TYPE_017, .data = (void *) MCP_TYPE_017,
}, },
{
.compatible = "microchip,mcp23018",
.data = (void *) MCP_TYPE_018,
},
/* NOTE: The use of the mcp prefix is deprecated and will be removed. */ /* NOTE: The use of the mcp prefix is deprecated and will be removed. */
{ {
.compatible = "mcp,mcp23008", .compatible = "mcp,mcp23008",
@ -1010,6 +1022,7 @@ static int mcp230xx_probe(struct i2c_client *client,
static const struct i2c_device_id mcp230xx_id[] = { static const struct i2c_device_id mcp230xx_id[] = {
{ "mcp23008", MCP_TYPE_008 }, { "mcp23008", MCP_TYPE_008 },
{ "mcp23017", MCP_TYPE_017 }, { "mcp23017", MCP_TYPE_017 },
{ "mcp23018", MCP_TYPE_018 },
{ }, { },
}; };
MODULE_DEVICE_TABLE(i2c, mcp230xx_id); MODULE_DEVICE_TABLE(i2c, mcp230xx_id);