mfd: da9063: Add support for production silicon variant code

Add the correct silicon variant code ID (0x5) to the driver. This
new code is the 'production' variant code ID for DA9063.

This patch will remove the older variant code ID which matches the
pre-production silicon ID (0x3) for the DA9063 chip.

There is also some small amount of correction done in this patch:
it splits the revision code and correctly names it according to
the hardware specification and moves the dev_info() call before
the variant ID test.

Signed-off-by: Opensource [Steve Twiss] <stwiss.opensource@diasemi.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

1 files changed, 14 insertions, 11 deletions

diff --git a/drivers/mfd/da9063-core.c b/drivers/mfd/da9063-core.c
index 26937cd01071..e70ae315abc7 100644
--- a/drivers/mfd/da9063-core.c
+++ b/drivers/mfd/da9063-core.c
@@ -110,7 +110,7 @@ static const struct mfd_cell da9063_devs[] = {
 int da9063_device_init(struct da9063 *da9063, unsigned int irq)
 {
         struct da9063_pdata *pdata = da9063->dev->platform_data;
-        int model, revision;
+        int model, variant_id, variant_code;
         int ret;
 
         if (pdata) {
@@ -141,23 +141,26 @@ int da9063_device_init(struct da9063 *da9063, unsigned int irq)
                 return -ENODEV;
         }
 
-        ret = regmap_read(da9063->regmap, DA9063_REG_CHIP_VARIANT, &revision);
+        ret = regmap_read(da9063->regmap, DA9063_REG_CHIP_VARIANT, &variant_id);
         if (ret < 0) {
-                dev_err(da9063->dev, "Cannot read chip revision id.\n");
+                dev_err(da9063->dev, "Cannot read chip variant id.\n");
                 return -EIO;
         }
-        revision >>= DA9063_CHIP_VARIANT_SHIFT;
-        if (revision != 3) {
-                dev_err(da9063->dev, "Unknown chip revision: %d\n", revision);
+
+        variant_code = variant_id >> DA9063_CHIP_VARIANT_SHIFT;
+
+        dev_info(da9063->dev,
+                 "Device detected (chip-ID: 0x%02X, var-ID: 0x%02X)\n",
+                 model, variant_id);
+
+        if (variant_code != PMIC_DA9063_BB) {
+                dev_err(da9063->dev, "Unknown chip variant code: 0x%02X\n",
+                                variant_code);
                 return -ENODEV;
         }
 
         da9063->model = model;
-        da9063->revision = revision;
-
-        dev_info(da9063->dev,
-                 "Device detected (model-ID: 0x%02X  rev-ID: 0x%02X)\n",
-                 model, revision);
+        da9063->variant_code = variant_code;
 
         ret = da9063_irq_init(da9063);
         if (ret) {