Re: [PATCH 2/2] gpio: mcp32s08: add support for mcp23018

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



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
--
To unsubscribe from this list: send the line "unsubscribe linux-gpio" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Linux SPI]     [Linux Kernel]     [Linux ARM (vger)]     [Linux ARM MSM]     [Linux Omap]     [Linux Arm]     [Linux Tegra]     [Fedora ARM]     [Linux for Samsung SOC]     [eCos]     [Linux Fastboot]     [Gcc Help]     [Git]     [DCCP]     [IETF Announce]     [Security]     [Linux MIPS]     [Yosemite Campsites]

  Powered by Linux