On 5/10/2017 09:23, Phil Reid wrote:
This adds the required definitions for the mcp23018 which is the i2c
variant of the mcp23s18.
Signed-off-by: Phil Reid <preid@xxxxxxxxxxxxxxxxx>
---
drivers/gpio/gpio-mcp23s08.c | 15 ++++++++++++++-
1 file changed, 14 insertions(+), 1 deletion(-)
I've just noticed that this needs to be rebased as mcp23s08 driver has moved.
Other that the new location the patch is the same so far.
I have a couple of queries regarding the driver in another email, will wait for that first..
diff --git a/drivers/gpio/gpio-mcp23s08.c b/drivers/gpio/gpio-mcp23s08.c
index 2a57d024..92751e5 100644
--- a/drivers/gpio/gpio-mcp23s08.c
+++ b/drivers/gpio/gpio-mcp23s08.c
@@ -33,6 +33,7 @@
#define MCP_TYPE_008 2
#define MCP_TYPE_017 3
#define MCP_TYPE_S18 4
+#define MCP_TYPE_018 5
/* Registers are all 8 bits wide.
*
@@ -595,6 +596,13 @@ 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:
@@ -640,7 +648,7 @@ 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);
@@ -729,6 +737,10 @@ static int mcp23s08_probe_one(struct mcp23s08 *mcp, struct device *dev,
.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",
@@ -812,6 +824,7 @@ static int mcp230xx_remove(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);
--
Regards
Phil Reid
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