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authorPhil Reid <preid@electromag.com.au>2017-10-06 13:08:07 +0800
committerLinus Walleij <linus.walleij@linaro.org>2017-10-19 10:23:36 +0200
commitff0f2ce71c200927dcc1d5626079533fafd85b2b (patch)
tree1800769585c0b31c298454080313b228de97bba1 /drivers/pinctrl
parent350bdb84fda89270703907fb4c4fb482e1edbc31 (diff)
downloadlinux-ff0f2ce71c200927dcc1d5626079533fafd85b2b.tar.bz2
gpio: mcp23s08: add support for mcp23018
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>
Diffstat (limited to 'drivers/pinctrl')
-rw-r--r--drivers/pinctrl/pinctrl-mcp23s08.c15
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/pinctrl/pinctrl-mcp23s08.c b/drivers/pinctrl/pinctrl-mcp23s08.c
index d3dbb644fa83..a7602be296a2 100644
--- a/drivers/pinctrl/pinctrl-mcp23s08.c
+++ b/drivers/pinctrl/pinctrl-mcp23s08.c
@@ -25,6 +25,7 @@
#define MCP_TYPE_008 2
#define MCP_TYPE_017 3
#define MCP_TYPE_S18 4
+#define MCP_TYPE_018 5
#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.label = "mcp23017";
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 */
default:
@@ -880,7 +888,7 @@ static int mcp23s08_probe_one(struct mcp23s08 *mcp, struct device *dev,
if (mirror)
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);
ret = mcp_write(mcp, MCP_IOCON, status);
@@ -961,6 +969,10 @@ static const struct of_device_id mcp23s08_i2c_of_match[] = {
.compatible = "microchip,mcp23017",
.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. */
{
.compatible = "mcp,mcp23008",
@@ -1010,6 +1022,7 @@ static int mcp230xx_probe(struct i2c_client *client,
static const struct i2c_device_id mcp230xx_id[] = {
{ "mcp23008", MCP_TYPE_008 },
{ "mcp23017", MCP_TYPE_017 },
+ { "mcp23018", MCP_TYPE_018 },
{ },
};
MODULE_DEVICE_TABLE(i2c, mcp230xx_id);