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pinctrl: intel: Convert capability list to features 

Communities can have features provided in the capability list.
Traverse the list and convert to respective features.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
This commit is contained in:
Andy Shevchenko 2021-01-08 15:40:05 +02:00
parent 998c49e8f8
commit 91d898e51e
2 changed files with 42 additions and 3 deletions
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41
drivers/pinctrl/intel/pinctrl-intel.c
View File

@ -29,6 +29,16 @@
#define REVID_SHIFT 16
#define REVID_MASK GENMASK(31, 16)
#define CAPLIST 0x004
#define CAPLIST_ID_SHIFT 16
#define CAPLIST_ID_MASK GENMASK(23, 16)
#define CAPLIST_ID_GPIO_HW_INFO 1
#define CAPLIST_ID_PWM 2
#define CAPLIST_ID_BLINK 3
#define CAPLIST_ID_EXP 4
#define CAPLIST_NEXT_SHIFT 0
#define CAPLIST_NEXT_MASK GENMASK(15, 0)
#define PADBAR 0x00c
#define PADOWN_BITS 4
@ -1472,7 +1482,7 @@ static int intel_pinctrl_probe(struct platform_device *pdev,
for (i = 0; i < pctrl->ncommunities; i++) {
struct intel_community *community = &pctrl->communities[i];
void __iomem *regs;
u32 padbar;
u32 offset;
u32 value;
*community = pctrl->soc->communities[i];
@ -1488,11 +1498,36 @@ static int intel_pinctrl_probe(struct platform_device *pdev,
community->features |= PINCTRL_FEATURE_1K_PD;
}
/* Determine community features based on the capabilities */
offset = CAPLIST;
do {
value = readl(regs + offset);
switch ((value & CAPLIST_ID_MASK) >> CAPLIST_ID_SHIFT) {
case CAPLIST_ID_GPIO_HW_INFO:
community->features |= PINCTRL_FEATURE_GPIO_HW_INFO;
break;
case CAPLIST_ID_PWM:
community->features |= PINCTRL_FEATURE_PWM;
break;
case CAPLIST_ID_BLINK:
community->features |= PINCTRL_FEATURE_BLINK;
break;
case CAPLIST_ID_EXP:
community->features |= PINCTRL_FEATURE_EXP;
break;
default:
break;
}
offset = (value & CAPLIST_NEXT_MASK) >> CAPLIST_NEXT_SHIFT;
} while (offset);
dev_dbg(&pdev->dev, "Community%d features: %#08x\n", i, community->features);
/* Read offset of the pad configuration registers */
padbar = readl(regs + PADBAR);
offset = readl(regs + PADBAR);
community->regs = regs;
community->pad_regs = regs + padbar;
community->pad_regs = regs + offset;
if (community->gpps)
ret = intel_pinctrl_add_padgroups_by_gpps(pctrl, community);

4
drivers/pinctrl/intel/pinctrl-intel.h
View File

@ -143,6 +143,10 @@ struct intel_community {
/* Additional features supported by the hardware */
#define PINCTRL_FEATURE_DEBOUNCE BIT(0)
#define PINCTRL_FEATURE_1K_PD BIT(1)
#define PINCTRL_FEATURE_GPIO_HW_INFO BIT(2)
#define PINCTRL_FEATURE_PWM BIT(3)
#define PINCTRL_FEATURE_BLINK BIT(4)
#define PINCTRL_FEATURE_EXP BIT(5)
/**
* PIN_GROUP - Declare a pin group