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pinctrl: cherryview: Don't use selection 0 to mark an interrupt line as unused

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The selection 0 is a perfectly valid, so stop using it to have
the special meaning of interrupt line not used in the intr_lines.

Instead introduce a special CHV_INVALID_HWIRQ value, derived
from INVALID_HWIRQ. which is never a valid selection and use
that to indicate unused interrupt lines.

Cc: Yauhen Kharuzhy <jekhor@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
This commit is contained in:
Hans de Goede 2021-11-18 11:56:48 +01:00 committed by Andy Shevchenko
parent 6b4542664c
commit bdfbef2d29
1 changed files with 16 additions and 2 deletions
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18
drivers/pinctrl/intel/pinctrl-cherryview.c
View file

@ -73,6 +73,8 @@ struct intel_pad_context {
u32 padctrl1;
};
#define CHV_INVALID_HWIRQ ((unsigned int)INVALID_HWIRQ)
/**
* struct intel_community_context - community context for Cherryview
* @intr_lines: Mapping between 16 HW interrupt wires and GPIO offset (in GPIO number space)
@ -812,7 +814,7 @@ static int chv_gpio_request_enable(struct pinctrl_dev *pctldev,
/* Reset the interrupt mapping */
for (i = 0; i < ARRAY_SIZE(cctx->intr_lines); i++) {
if (cctx->intr_lines[i] == offset) {
cctx->intr_lines[i] = 0;
cctx->intr_lines[i] = CHV_INVALID_HWIRQ;
break;
}
}
@ -1319,7 +1321,7 @@ static unsigned chv_gpio_irq_startup(struct irq_data *d)
else
handler = handle_edge_irq;
if (!cctx->intr_lines[intsel]) {
if (cctx->intr_lines[intsel] == CHV_INVALID_HWIRQ) {
irq_set_handler_locked(d, handler);
cctx->intr_lines[intsel] = pin;
}
@ -1412,6 +1414,12 @@ static void chv_gpio_irq_handler(struct irq_desc *desc)
unsigned int offset;
offset = cctx->intr_lines[intr_line];
if (offset == CHV_INVALID_HWIRQ) {
dev_err(pctrl->dev, "interrupt on unused interrupt line %u\n",
intr_line);
continue;
}
generic_handle_domain_irq(gc->irq.domain, offset);
}
@ -1617,11 +1625,13 @@ static acpi_status chv_pinctrl_mmio_access_handler(u32 function,
static int chv_pinctrl_probe(struct platform_device *pdev)
{
const struct intel_pinctrl_soc_data *soc_data;
struct intel_community_context *cctx;
struct intel_community *community;
struct device *dev = &pdev->dev;
struct acpi_device *adev = ACPI_COMPANION(dev);
struct intel_pinctrl *pctrl;
acpi_status status;
unsigned int i;
int ret, irq;
soc_data = intel_pinctrl_get_soc_data(pdev);
@ -1663,6 +1673,10 @@ static int chv_pinctrl_probe(struct platform_device *pdev)
if (!pctrl->context.communities)
return -ENOMEM;
cctx = &pctrl->context.communities[0];
for (i = 0; i < ARRAY_SIZE(cctx->intr_lines); i++)
cctx->intr_lines[i] = CHV_INVALID_HWIRQ;
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return irq;