[PATCH 5.10 78/79] hwmon: (mr75203) enable polling for all VM channels

Greg Kroah-Hartman
2022-09-13T14:49:56Z

From: Eliav Farber <farbere@amazon.com>

[ Upstream commit e43212e0f55dc2d6b15d6c174cc0a64b25fab5e7 ]

Configure ip-polling register to enable polling for all voltage monitor
channels.
This enables reading the voltage values for all inputs other than just
input 0.

Fixes: 9d823351a337 ("hwmon: Add hardware monitoring driver for Moortec MR75203 PVT controller")
Signed-off-by: Eliav Farber <farbere@amazon.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20220908152449.35457-7-farbere@amazon.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hwmon/mr75203.c | 13 +++++++++++++
1 file changed, 13 insertions(+)

diff --git a/drivers/hwmon/mr75203.c b/drivers/hwmon/mr75203.c
index 87a14713e1249..41e3d3b54baff 100644
--- a/drivers/hwmon/mr75203.c
+++ b/drivers/hwmon/mr75203.c
@@ -398,6 +398,19 @@ static int pvt_init(struct pvt_device *pvt)
if (ret)
return ret;

+ val = (BIT(pvt->c_num) - 1) | VM_CH_INIT |
+ IP_POLL << SDIF_ADDR_SFT | SDIF_WRN_W | SDIF_PROG;
+ ret = regmap_write(v_map, SDIF_W, val);
+ if (ret < 0)
+ return ret;
+
+ ret = regmap_read_poll_timeout(v_map, SDIF_STAT,
+ val, !(val & SDIF_BUSY),
+ PVT_POLL_DELAY_US,
+ PVT_POLL_TIMEOUT_US);
+ if (ret)
+ return ret;
+
val = CFG1_VOL_MEAS_MODE | CFG1_PARALLEL_OUT |
CFG1_14_BIT | IP_CFG << SDIF_ADDR_SFT |
SDIF_WRN_W | SDIF_PROG;
--
2.35.1