mfd: Add WM8321 support

The WM8321 is a PMIC for low power, high performance applications. From a
software point of view the device is identical to the WM8320, all the
differences between the two devices are visible only in hardware.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/mfd/wm831x-core.c b/drivers/mfd/wm831x-core.c
index 1a968f34d679..cb94e7e1e6ea 100644
--- a/drivers/mfd/wm831x-core.c
+++ b/drivers/mfd/wm831x-core.c
@@ -95,6 +95,7 @@ enum wm831x_parent {
         WM8311 = 0x8311,
         WM8312 = 0x8312,
         WM8320 = 0x8320,
+        WM8321 = 0x8321,
 };
 
 static int wm831x_reg_locked(struct wm831x *wm831x, unsigned short reg)
@@ -1533,6 +1534,12 @@ static int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq)
                 dev_info(wm831x->dev, "WM8320 revision %c\n", 'A' + rev);
                 break;
 
+        case WM8321:
+                parent = WM8321;
+                wm831x->num_gpio = 12;
+                dev_info(wm831x->dev, "WM8321 revision %c\n", 'A' + rev);
+                break;
+
         default:
                 dev_err(wm831x->dev, "Unknown WM831x device %04x\n", ret);
                 ret = -EINVAL;
@@ -1607,6 +1614,12 @@ static int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq)
                                       NULL, 0);
                 break;
 
+        case WM8321:
+                ret = mfd_add_devices(wm831x->dev, -1,
+                                      wm8320_devs, ARRAY_SIZE(wm8320_devs),
+                                      NULL, 0);
+                break;
+
         default:
                 /* If this happens the bus probe function is buggy */
                 BUG();
@@ -1779,6 +1792,7 @@ static const struct i2c_device_id wm831x_i2c_id[] = {
         { "wm8311", WM8311 },
         { "wm8312", WM8312 },
         { "wm8320", WM8320 },
+        { "wm8321", WM8321 },
         { }
 };
 MODULE_DEVICE_TABLE(i2c, wm831x_i2c_id);