diff options
author | Hans de Goede <hdegoede@redhat.com> | 2021-11-18 11:56:48 +0100 |
---|---|---|
committer | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2021-11-26 22:37:41 +0200 |
commit | bdfbef2d29dcdc79e2abf3085d4be6a844a06e34 (patch) | |
tree | 29c284277c1ac2462c534de1076fe00ee6ceb22c /drivers/pinctrl/intel | |
parent | 6b4542664c2d1fc7a770f0a4182ef5e36672d313 (diff) | |
download | linux-bdfbef2d29dcdc79e2abf3085d4be6a844a06e34.tar.bz2 |
pinctrl: cherryview: Don't use selection 0 to mark an interrupt line as unused
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>
Diffstat (limited to 'drivers/pinctrl/intel')
-rw-r--r-- | drivers/pinctrl/intel/pinctrl-cherryview.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/pinctrl/intel/pinctrl-cherryview.c b/drivers/pinctrl/intel/pinctrl-cherryview.c index 980099028cf8..978eddd89ea2 100644 --- a/drivers/pinctrl/intel/pinctrl-cherryview.c +++ b/drivers/pinctrl/intel/pinctrl-cherryview.c @@ -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; |