diff options
Diffstat (limited to 'drivers/pinctrl/pinctrl-single.c')
| -rw-r--r-- | drivers/pinctrl/pinctrl-single.c | 34 |
1 files changed, 32 insertions, 2 deletions
diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c index 829b98c5c66..2960557bfed 100644 --- a/drivers/pinctrl/pinctrl-single.c +++ b/drivers/pinctrl/pinctrl-single.c @@ -525,12 +525,18 @@ static void pcs_disable(struct pinctrl_dev *pctldev, unsigned fselector, for (i = 0; i < func->nvals; i++) { struct pcs_func_vals *vals; unsigned long flags; - unsigned val; + unsigned val, mask; vals = &func->vals[i]; raw_spin_lock_irqsave(&pcs->lock, flags); val = pcs->read(vals->reg); - val &= ~pcs->fmask; + + if (pcs->bits_per_mux) + mask = vals->mask; + else + mask = pcs->fmask; + + val &= ~mask; val |= pcs->foff << pcs->fshift; pcs->write(val, vals->reg); raw_spin_unlock_irqrestore(&pcs->lock, flags); @@ -656,6 +662,7 @@ static int pcs_pinconf_get(struct pinctrl_dev *pctldev, break; case PIN_CONFIG_DRIVE_STRENGTH: case PIN_CONFIG_SLEW_RATE: + case PIN_CONFIG_LOW_POWER_MODE: default: *config = data; break; @@ -693,6 +700,7 @@ static int pcs_pinconf_set(struct pinctrl_dev *pctldev, case PIN_CONFIG_INPUT_SCHMITT: case PIN_CONFIG_DRIVE_STRENGTH: case PIN_CONFIG_SLEW_RATE: + case PIN_CONFIG_LOW_POWER_MODE: shift = ffs(func->conf[i].mask) - 1; data &= ~func->conf[i].mask; data |= (arg << shift) & func->conf[i].mask; @@ -802,6 +810,7 @@ static const struct pinconf_ops pcs_pinconf_ops = { static int pcs_add_pin(struct pcs_device *pcs, unsigned offset, unsigned pin_pos) { + struct pcs_soc_data *pcs_soc = &pcs->socdata; struct pinctrl_pin_desc *pin; struct pcs_name *pn; int i; @@ -813,6 +822,18 @@ static int pcs_add_pin(struct pcs_device *pcs, unsigned offset, return -ENOMEM; } + if (pcs_soc->irq_enable_mask) { + unsigned val; + + val = pcs->read(pcs->base + offset); + if (val & pcs_soc->irq_enable_mask) { + dev_dbg(pcs->dev, "irq enabled at boot for pin at %lx (%x), clearing\n", + (unsigned long)pcs->res->start + offset, val); + val &= ~pcs_soc->irq_enable_mask; + pcs->write(val, pcs->base + offset); + } + } + pin = &pcs->pins.pa[i]; pn = &pcs->names[i]; sprintf(pn->name, "%lx.%d", @@ -1095,6 +1116,7 @@ static int pcs_parse_pinconf(struct pcs_device *pcs, struct device_node *np, { "pinctrl-single,drive-strength", PIN_CONFIG_DRIVE_STRENGTH, }, { "pinctrl-single,slew-rate", PIN_CONFIG_SLEW_RATE, }, { "pinctrl-single,input-schmitt", PIN_CONFIG_INPUT_SCHMITT, }, + { "pinctrl-single,low-power-mode", PIN_CONFIG_LOW_POWER_MODE, }, }; struct pcs_conf_type prop4[] = { { "pinctrl-single,bias-pullup", PIN_CONFIG_BIAS_PULL_UP, }, @@ -1312,6 +1334,14 @@ static int pcs_parse_bits_in_pinctrl_entry(struct pcs_device *pcs, mask_pos = ((pcs->fmask) << (bit_pos - 1)); val_pos = val & mask_pos; submask = mask & mask_pos; + + if ((mask & mask_pos) == 0) { + dev_err(pcs->dev, + "Invalid mask for %s at 0x%x\n", + np->name, offset); + break; + } + mask &= ~mask_pos; if (submask != mask_pos) { |