hwmon: (pmbus/bpa-rs600) Support BPD-RS600

The BPD-RS600 is the DC version of the BPA-RS600. The PMBUS interface is
the same between the two models. Keep the same compatible string but
accept either BPA-RS600 or BPD-RS600 in the PMBUS_MFR_MODEL.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Link: https://lore.kernel.org/r/20210708220618.23576-1-chris.packham@alliedtelesis.co.nz
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/drivers/hwmon/pmbus/bpa-rs600.c b/drivers/hwmon/pmbus/bpa-rs600.c
index 2be69fe..d205b41 100644 (file)
--- a/drivers/hwmon/pmbus/bpa-rs600.c
+++ b/drivers/hwmon/pmbus/bpa-rs600.c
@@ -21,6 +21,8 @@
 #define BPARS600_MFR_IOUT_MAX  0xa6
 #define BPARS600_MFR_POUT_MAX  0xa7
 
+enum chips { bpa_rs600, bpd_rs600 };
+
 static int bpa_rs600_read_byte_data(struct i2c_client *client, int page, int reg)
 {
        int ret;
@@ -146,11 +148,19 @@ static struct pmbus_driver_info bpa_rs600_info = {
        .read_word_data = bpa_rs600_read_word_data,
 };
 
+static const struct i2c_device_id bpa_rs600_id[] = {
+       { "bpa-rs600", bpa_rs600 },
+       { "bpd-rs600", bpd_rs600 },
+       {},
+};
+MODULE_DEVICE_TABLE(i2c, bpa_rs600_id);
+
 static int bpa_rs600_probe(struct i2c_client *client)
 {
        struct device *dev = &client->dev;
        u8 buf[I2C_SMBUS_BLOCK_MAX + 1];
        int ret;
+       const struct i2c_device_id *mid;
 
        if (!i2c_check_functionality(client->adapter,
                                     I2C_FUNC_SMBUS_READ_BYTE_DATA
@@ -164,7 +174,11 @@ static int bpa_rs600_probe(struct i2c_client *client)
                return ret;
        }
 
-       if (strncmp(buf, "BPA-RS600", 8)) {
+       for (mid = bpa_rs600_id; mid->name[0]; mid++) {
+               if (!strncasecmp(buf, mid->name, strlen(mid->name)))
+                       break;
+       }
+       if (!mid->name[0]) {
                buf[ret] = '\0';
                dev_err(dev, "Unsupported Manufacturer Model '%s'\n", buf);
                return -ENODEV;
@@ -173,12 +187,6 @@ static int bpa_rs600_probe(struct i2c_client *client)
        return pmbus_do_probe(client, &bpa_rs600_info);
 }
 
-static const struct i2c_device_id bpa_rs600_id[] = {
-       { "bpars600", 0 },
-       {},
-};
-MODULE_DEVICE_TABLE(i2c, bpa_rs600_id);
-
 static const struct of_device_id __maybe_unused bpa_rs600_of_match[] = {
        { .compatible = "blutek,bpa-rs600" },
        {},