diff options
| author | Andy Shevchenko | 2021-01-08 15:40:05 +0200 |
|---|---|---|
| committer | Andy Shevchenko | 2021-01-08 16:04:30 +0200 |
| commit | 91d898e51e603a703cd046ae8c5d8b7da2ce4831 (patch) | |
| tree | 5520b7a82839a3ae758e3a91eee81452d4da0600 /drivers/pinctrl | |
| parent | 998c49e8f8b7c99faefe9e7401022514fe3a7b10 (diff) | |
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>
Diffstat (limited to 'drivers/pinctrl')
| -rw-r--r-- | drivers/pinctrl/intel/pinctrl-intel.c | 41 | ||||
| -rw-r--r-- | drivers/pinctrl/intel/pinctrl-intel.h | 4 |
2 files changed, 42 insertions, 3 deletions
diff --git a/drivers/pinctrl/intel/pinctrl-intel.c b/drivers/pinctrl/intel/pinctrl-intel.c index 1a479112ed85..8085782cd8f9 100644 --- a/drivers/pinctrl/intel/pinctrl-intel.c +++ b/drivers/pinctrl/intel/pinctrl-intel.c @@ -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); diff --git a/drivers/pinctrl/intel/pinctrl-intel.h b/drivers/pinctrl/intel/pinctrl-intel.h index ad34b7a3f6ed..c4fef03b663f 100644 --- a/drivers/pinctrl/intel/pinctrl-intel.h +++ b/drivers/pinctrl/intel/pinctrl-intel.h @@ -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 |