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pinctrl: intel: Make offset to interrupt status register configurable 

Some GPIO blocks have the interrupt status (GPI_IS) offset different
than it normally is, so make it configurable. If no offset is specified
we use the default.

While there remove two unused constants from the core driver.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
hifive-unleashed-5.1
Mika Westerberg 2017-10-23 15:40:25 +03:00 committed by Linus Walleij
parent 1396007286
commit cf769bd86b
2 changed files with 15 additions and 8 deletions
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20
drivers/pinctrl/intel/pinctrl-intel.c
View File

@ -30,8 +30,6 @@
#define PADBAR 0x00c
#define GPI_IS 0x100
#define GPI_GPE_STS 0x140
#define GPI_GPE_EN 0x160
#define PADOWN_BITS 4
#define PADOWN_SHIFT(p) ((p) % 8 * PADOWN_BITS)
@ -818,7 +816,7 @@ static void intel_gpio_irq_ack(struct irq_data *d)
community = intel_get_community(pctrl, pin);
if (community) {
const struct intel_padgroup *padgrp;
unsigned gpp, gpp_offset;
unsigned gpp, gpp_offset, is_offset;
padgrp = intel_community_get_padgroup(community, pin);
if (!padgrp)
@ -826,9 +824,10 @@ static void intel_gpio_irq_ack(struct irq_data *d)
gpp = padgrp->reg_num;
gpp_offset = padgroup_offset(padgrp, pin);
is_offset = community->is_offset + gpp * 4;
raw_spin_lock(&pctrl->lock);
writel(BIT(gpp_offset), community->regs + GPI_IS + gpp * 4);
writel(BIT(gpp_offset), community->regs + is_offset);
raw_spin_unlock(&pctrl->lock);
}
}
@ -843,7 +842,7 @@ static void intel_gpio_irq_enable(struct irq_data *d)
community = intel_get_community(pctrl, pin);
if (community) {
const struct intel_padgroup *padgrp;
unsigned gpp, gpp_offset;
unsigned gpp, gpp_offset, is_offset;
unsigned long flags;
u32 value;
@ -853,10 +852,11 @@ static void intel_gpio_irq_enable(struct irq_data *d)
gpp = padgrp->reg_num;
gpp_offset = padgroup_offset(padgrp, pin);
is_offset = community->is_offset + gpp * 4;
raw_spin_lock_irqsave(&pctrl->lock, flags);
/* Clear interrupt status first to avoid unexpected interrupt */
writel(BIT(gpp_offset), community->regs + GPI_IS + gpp * 4);
writel(BIT(gpp_offset), community->regs + is_offset);
value = readl(community->regs + community->ie_offset + gpp * 4);
value |= BIT(gpp_offset);
@ -991,7 +991,8 @@ static irqreturn_t intel_gpio_community_irq_handler(struct intel_pinctrl *pctrl,
const struct intel_padgroup *padgrp = &community->gpps[gpp];
unsigned long pending, enabled, gpp_offset;
pending = readl(community->regs + GPI_IS + padgrp->reg_num * 4);
pending = readl(community->regs + community->is_offset +
padgrp->reg_num * 4);
enabled = readl(community->regs + community->ie_offset +
padgrp->reg_num * 4);
@ -1241,6 +1242,9 @@ int intel_pinctrl_probe(struct platform_device *pdev,
community->regs = regs;
community->pad_regs = regs + padbar;
if (!community->is_offset)
community->is_offset = GPI_IS;
ret = intel_pinctrl_add_padgroups(pctrl, community);
if (ret)
return ret;
@ -1356,7 +1360,7 @@ static void intel_gpio_irq_init(struct intel_pinctrl *pctrl)
for (gpp = 0; gpp < community->ngpps; gpp++) {
/* Mask and clear all interrupts */
writel(0, base + community->ie_offset + gpp * 4);
writel(0xffff, base + GPI_IS + gpp * 4);
writel(0xffff, base + community->is_offset + gpp * 4);
}
}
}

3
drivers/pinctrl/intel/pinctrl-intel.h
View File

@ -73,6 +73,8 @@ struct intel_padgroup {
* @hostown_offset: Register offset of HOSTSW_OWN from @regs. If %0 then it
* is assumed that the host owns the pin (rather than
* ACPI).
* @is_offset: Register offset of GPI_IS from @regs. If %0 then uses the
* default (%0x100).
* @ie_offset: Register offset of GPI_IE from @regs.
* @pin_base: Starting pin of pins in this community
* @gpp_size: Maximum number of pads in each group, such as PADCFGLOCK,
@ -98,6 +100,7 @@ struct intel_community {
unsigned padown_offset;
unsigned padcfglock_offset;
unsigned hostown_offset;
unsigned is_offset;
unsigned ie_offset;
unsigned pin_base;
unsigned gpp_size;