From: Tao Ren <rentao.bupt@xxxxxxxxx>
Add the driver to support BEL PFE3000 which is 3000 Wat AC to DC power
supply. The chip has 8 pages.
Signed-off-by: Tao Ren <rentao.bupt@xxxxxxxxx>
---
drivers/hwmon/pmbus/bel-pfe.c | 65 ++++++++++++++++++++++++++++++++++-
1 file changed, 64 insertions(+), 1 deletion(-)
diff --git a/drivers/hwmon/pmbus/bel-pfe.c b/drivers/hwmon/pmbus/bel-pfe.c
index 117f9af21bf3..7b6c90b056c9 100644
--- a/drivers/hwmon/pmbus/bel-pfe.c
+++ b/drivers/hwmon/pmbus/bel-pfe.c
@@ -10,9 +10,21 @@
#include <linux/init.h>
#include <linux/err.h>
#include <linux/i2c.h>
+#include <linux/pmbus.h>
+
#include "pmbus.h"
-enum chips {pfe1100};
+enum chips {pfe1100, pfe3000};
+
+/*
+ * Disable status check for pfe3000 devices, because some devices report
+ * communication error (invalid command) for VOUT_MODE command (0x20)
+ * although correct VOUT_MODE (0x16) is returned: it leads to incorrect
+ * exponent in linear mode.
+ */
+static struct pmbus_platform_data pfe3000_plat_data = {
+ .flags = PMBUS_SKIP_STATUS_CHECK,
+};
static struct pmbus_driver_info pfe_driver_info[] = {
[pfe1100] = {
@@ -34,6 +46,45 @@ static struct pmbus_driver_info pfe_driver_info[] = {
PMBUS_HAVE_STATUS_TEMP |
PMBUS_HAVE_FAN12,
},
+
+ [pfe3000] = {
+ .pages = 8,
+ .format[PSC_VOLTAGE_IN] = linear,
+ .format[PSC_VOLTAGE_OUT] = linear,
+ .format[PSC_CURRENT_IN] = linear,
+ .format[PSC_CURRENT_OUT] = linear,
+ .format[PSC_POWER] = linear,
+ .format[PSC_TEMPERATURE] = linear,
+ .format[PSC_FAN] = linear,
+
+ /* Page 0: V1. */
+ .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
+ PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT |
+ PMBUS_HAVE_POUT | PMBUS_HAVE_FAN12 |
+ PMBUS_HAVE_VIN | PMBUS_HAVE_IIN |
+ PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT |
+ PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP2 |
+ PMBUS_HAVE_TEMP3 | PMBUS_HAVE_STATUS_TEMP |
+ PMBUS_HAVE_VCAP,
+
+ /* Page 1: Vsb. */
+ .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
+ PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT |
+ PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT |
+ PMBUS_HAVE_POUT,
+
+ /*
+ * Page 2: V1 Ishare.
+ * Page 4: V1 Cathode.
+ * Page 5: Vsb Cathode.
+ * Page 6: V1 Sense.
+ * Page 3 and 7 are reserved.
+ */
+ .func[2] = PMBUS_HAVE_VOUT,
+ .func[4] = PMBUS_HAVE_VOUT,
+ .func[5] = PMBUS_HAVE_VOUT,
+ .func[6] = PMBUS_HAVE_VOUT,
+ },
};
static int pfe_pmbus_probe(struct i2c_client *client,
@@ -42,11 +93,23 @@ static int pfe_pmbus_probe(struct i2c_client *client,
int model;
model = (int)id->driver_data;
+
+ /*
+ * PFE3000-12-069RA devices may not stay in page 0 during device
+ * probe which leads to probe failure (read status word failed).
+ * So let's set the device to page 0 at the beginning.
+ */
+ if (model == pfe3000) {
+ client->dev.platform_data = &pfe3000_plat_data;
+ i2c_smbus_write_byte_data(client, PMBUS_PAGE, 0);
+ }
+
return pmbus_do_probe(client, id, &pfe_driver_info[model]);
}
static const struct i2c_device_id pfe_device_id[] = {
{"pfe1100", pfe1100},
+ {"pfe3000", pfe3000},
{}
};
--
2.17.1
