hwmon: (it87) Add controls for chips with only 4 PWMs

Add feature and support for chips with only 4 PWMs.

Signed-off-by: Frank Crawford <frank@crawford.emu.id.au>
Link: https://lore.kernel.org/r/20230429115205.1547251-3-frank@crawford.emu.id.au
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c
index bd9a249..d5482c6 100644 (file)
--- a/drivers/hwmon/it87.c
+++ b/drivers/hwmon/it87.c
@@ -318,6 +318,7 @@ struct it87_devices {
  */
 #define FEAT_CONF_NOEXIT       BIT(19) /* Chip should not exit conf mode */
 #define FEAT_FOUR_FANS         BIT(20) /* Supports four fans */
+#define FEAT_FOUR_PWM          BIT(21) /* Supports four fan controls */
 
 static const struct it87_devices it87_devices[] = {
        [it87] = {
@@ -518,8 +519,11 @@ static const struct it87_devices it87_devices[] = {
 #define has_vid(data)          ((data)->features & FEAT_VID)
 #define has_in7_internal(data) ((data)->features & FEAT_IN7_INTERNAL)
 #define has_avcc3(data)                ((data)->features & FEAT_AVCC3)
-#define has_five_pwm(data)     ((data)->features & (FEAT_FIVE_PWM \
-                                                    | FEAT_SIX_PWM))
+#define has_four_pwm(data)     ((data)->features & (FEAT_FOUR_PWM | \
+                                                    FEAT_FIVE_PWM | \
+                                                    FEAT_SIX_PWM))
+#define has_five_pwm(data)     ((data)->features & (FEAT_FIVE_PWM | \
+                                                    FEAT_SIX_PWM))
 #define has_six_pwm(data)      ((data)->features & FEAT_SIX_PWM)
 #define has_pwm_freq2(data)    ((data)->features & FEAT_PWM_FREQ2)
 #define has_six_temp(data)     ((data)->features & FEAT_SIX_TEMP)
@@ -2734,8 +2738,10 @@ static int __init it87_find(int sioaddr, unsigned short *address,
        else
                sio_data->skip_in |= BIT(9);
 
-       if (!has_five_pwm(config))
+       if (!has_four_pwm(config))
                sio_data->skip_pwm |= BIT(3) | BIT(4) | BIT(5);
+       else if (!has_five_pwm(config))
+               sio_data->skip_pwm |= BIT(4) | BIT(5);
        else if (!has_six_pwm(config))
                sio_data->skip_pwm |= BIT(5);