[PATCH] hwmon: (nct6775) Add support for 18 IN readings for nct6799

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nct6799 supports 18 voltage readings where this driver stops at 16.

- Add additional VIN/IN_MIN/IN_MAX register values
- Update ALARM bits for the 16 supported values only as support
  for IN > 16 requires rebasing all other ALARM bits for other

Signed-off-by: Ahmad Khalifa <ahmad@xxxxxxxxxx>
---
 drivers/hwmon/nct6775-core.c | 33 +++++++++++++++++++++++++++++----
 drivers/hwmon/nct6775.h      |  4 ++--
 2 files changed, 31 insertions(+), 6 deletions(-)

diff --git a/drivers/hwmon/nct6775-core.c b/drivers/hwmon/nct6775-core.c
index 7163a2473fa0..1006765d8483 100644
--- a/drivers/hwmon/nct6775-core.c
+++ b/drivers/hwmon/nct6775-core.c
@@ -82,14 +82,16 @@ static const char * const nct6775_device_names[] = {
 
 /* Common and NCT6775 specific data */
 
-/* Voltage min/max registers for nr=7..14 are in bank 5 */
+/* Voltage min/max registers for nr=7..14 are in bank 5
+ * 15-17 for NCT6799 only
+ */
 
 static const u16 NCT6775_REG_IN_MAX[] = {
 	0x2b, 0x2d, 0x2f, 0x31, 0x33, 0x35, 0x37, 0x554, 0x556, 0x558, 0x55a,
-	0x55c, 0x55e, 0x560, 0x562 };
+	0x55c, 0x55e, 0x560, 0x562, 0x564, 0x570, 0x572 };
 static const u16 NCT6775_REG_IN_MIN[] = {
 	0x2c, 0x2e, 0x30, 0x32, 0x34, 0x36, 0x38, 0x555, 0x557, 0x559, 0x55b,
-	0x55d, 0x55f, 0x561, 0x563 };
+	0x55d, 0x55f, 0x561, 0x563, 0x565, 0x571, 0x573 };
 static const u16 NCT6775_REG_IN[] = {
 	0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x550, 0x551, 0x552
 };
@@ -340,9 +342,15 @@ static const u16 NCT6776_REG_TSI_TEMP[] = {
 
 /* NCT6779 specific data */
 
+/* 15-17 for NCT6799 only, register labels are:
+ *      CPUVC,  VIN1,  AVSB,  3VCC,  VIN0,  VIN8,  VIN4, 3VSB
+ *       VBAT,   VTT,  VIN5,  VIN6,  VIN2,  VIN3,  VIN7, VIN9
+ *       VHIF, VIN10
+ */
 static const u16 NCT6779_REG_IN[] = {
 	0x480, 0x481, 0x482, 0x483, 0x484, 0x485, 0x486, 0x487,
-	0x488, 0x489, 0x48a, 0x48b, 0x48c, 0x48d, 0x48e };
+	0x488, 0x489, 0x48a, 0x48b, 0x48c, 0x48d, 0x48e, 0x48f,
+	0x470, 0x471};
 
 static const u16 NCT6779_REG_ALARM[NUM_REG_ALARM] = {
 	0x459, 0x45A, 0x45B, 0x568 };
@@ -697,6 +705,21 @@ static const char *const nct6799_temp_label[] = {
 #define NCT6799_TEMP_MASK	0xbfff2ffe
 #define NCT6799_VIRT_TEMP_MASK	0x80000c00
 
+/* NCT6799 layout of alarm bits is indexed by the REG_VIN
+ * order, which is
+ *      CPUVC,  VIN1,  AVSB,  3VCC,  VIN0,  VIN8,  VIN4, 3VSB
+ *       VBAT,   VTT,  VIN5,  VIN6,  VIN2,  VIN3,  VIN7, VIN9
+ * no space for 16-17: VHIF, VIN10 (bits 31, -1)
+ */
+static const s8 NCT6799_ALARM_BITS[] = {
+	0, 1, 2, 3, 8, -1, 20, 16,	/* in0.. in7 */
+	17, 24, 25, 26, 27, 28, 29,	/* in8..in14 */
+	30,				/* in15 */
+	6, 7, 11, 10, 23, 33,		/* fan1..fan6 */
+	-1, -1,				/* unused */
+	4, 5, 13, -1, -1, -1,		/* temp1..temp6 */
+	12, 9 };			/* intrusion0, intrusion1 */
+
 /* NCT6102D/NCT6106D specific data */
 
 #define NCT6106_REG_VBAT	0x318
@@ -3972,6 +3995,8 @@ int nct6775_probe(struct device *dev, struct nct6775_data *data,
 		case nct6797:
 		case nct6798:
 		case nct6799:
+			data->in_num = 18;
+			data->ALARM_BITS = NCT6799_ALARM_BITS;
 			data->REG_TSI_TEMP = NCT6796_REG_TSI_TEMP;
 			num_reg_tsi_temp = ARRAY_SIZE(NCT6796_REG_TSI_TEMP);
 			break;
diff --git a/drivers/hwmon/nct6775.h b/drivers/hwmon/nct6775.h
index 44f79c5726a9..0607db9d1415 100644
--- a/drivers/hwmon/nct6775.h
+++ b/drivers/hwmon/nct6775.h
@@ -97,7 +97,7 @@ struct nct6775_data {
 	/* Register values */
 	u8 bank;		/* current register bank */
 	u8 in_num;		/* number of in inputs we have */
-	u8 in[15][3];		/* [0]=in, [1]=in_max, [2]=in_min */
+	u8 in[18][3];		/* [0]=in, [1]=in_max, [2]=in_min */
 	unsigned int rpm[NUM_FAN];
 	u16 fan_min[NUM_FAN];
 	u8 fan_pulses[NUM_FAN];
@@ -165,7 +165,7 @@ struct nct6775_data {
 	u16 have_temp;
 	u16 have_temp_fixed;
 	u16 have_tsi_temp;
-	u16 have_in;
+	u32 have_in;		/* upgrade to 32 as 6799 needs 18 */
 
 	/* Remember extra register values over suspend/resume */
 	u8 vbat;

base-commit: 06c2afb862f9da8dc5efa4b6076a0e48c3fbaaa5
prerequisite-patch-id: 36e3467bd9ea72cb3ad2bef638a8389a9537d111
prerequisite-patch-id: 85db508f68cabb50472c0cc5ef3953fc46bee3b1
-- 
2.39.2




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