lkml.org 
[lkml]   [2018]   [Feb]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [1/2] ARM: irqchip: stm32: Optimizes and cleans up stm32-exti irq_domain
Hi Ludovic,
I have tested on stm32f429-disco and it works without a problem.
handle_edge_irq is not used in current implementation because it is
substituted by handle_simple_irq in an alloc callback either way which
causes that irq_ack callback is not invoked as well (acking is done in
chained handler).

2018-02-22 11:55 GMT+01:00 Ludovic BARRE <ludovic.barre@st.com>:
> Hi Radek
>
> I've tested your change on stm32h743i-eval.dts board
> and gpio-keys tests are not functional.
> No interrupt occurs when we push or release button
> (cat /proc/interrupt).
>
> Board: stm32h743i-eval.dts
> Test description: gpio-keys (gpioc 13 => exti 13), with gpio or interrupt
> property.
>
> comment below
>
>
> On 02/21/2018 02:50 PM, radek wrote:
>>
>> - allocates generic chip with handle_simple_irq
>> which simplifies irq_domain_ops.alloc callback
>> - removes ack register from generic chip which is not used for
>> handle_simple_irq as acking is done in a chained handler
>> - removes unneeded irq_domain_ops.xlate callback
>>
>> Signed-off-by: Radoslaw Pietrzyk <radoslaw.pietrzyk@gmail.com>
>> ---
>> drivers/irqchip/irq-stm32-exti.c | 10 +---------
>> 1 file changed, 1 insertion(+), 9 deletions(-)
>>
>> diff --git a/drivers/irqchip/irq-stm32-exti.c
>> b/drivers/irqchip/irq-stm32-exti.c
>> index 36f0fbe..42e74e3 100644
>> --- a/drivers/irqchip/irq-stm32-exti.c
>> +++ b/drivers/irqchip/irq-stm32-exti.c
>> @@ -176,16 +176,12 @@ static int stm32_irq_set_wake(struct irq_data *data,
>> unsigned int on)
>> static int stm32_exti_alloc(struct irq_domain *d, unsigned int virq,
>> unsigned int nr_irqs, void *data)
>> {
>> - struct irq_chip_generic *gc;
>> struct irq_fwspec *fwspec = data;
>> irq_hw_number_t hwirq;
>> hwirq = fwspec->param[0];
>> - gc = irq_get_domain_generic_chip(d, hwirq);
>> irq_map_generic_chip(d, virq, hwirq);
>> - irq_domain_set_info(d, virq, hwirq, &gc->chip_types->chip, gc,
>> - handle_simple_irq, NULL, NULL);
>> return 0;
>> }
>> @@ -200,7 +196,6 @@ static void stm32_exti_free(struct irq_domain *d,
>> unsigned int virq,
>> struct irq_domain_ops irq_exti_domain_ops = {
>> .map = irq_map_generic_chip,
>> - .xlate = irq_domain_xlate_onetwocell,
>> .alloc = stm32_exti_alloc,
>> .free = stm32_exti_free,
>> };
>> @@ -231,7 +226,7 @@ __init stm32_exti_init(const struct stm32_exti_bank
>> **stm32_exti_banks,
>> }
>> ret = irq_alloc_domain_generic_chips(domain, IRQS_PER_BANK, 1,
>> "exti",
>> - handle_edge_irq, clr, 0, 0);
>> + handle_simple_irq, clr, 0,
>> 0);
>
>
> EXTI hardware block is trigged on pulse event rising or failing edge.
> Why do you change to handle_simple_irq ?
>
>> if (ret) {
>> pr_err("%pOF: Could not allocate generic interrupt
>> chip.\n",
>> node);
>> @@ -246,13 +241,10 @@ __init stm32_exti_init(const struct stm32_exti_bank
>> **stm32_exti_banks,
>> gc->reg_base = base;
>> gc->chip_types->type = IRQ_TYPE_EDGE_BOTH;
>> - gc->chip_types->chip.irq_ack = irq_gc_ack_set_bit;
>> gc->chip_types->chip.irq_mask = irq_gc_mask_clr_bit;
>> gc->chip_types->chip.irq_unmask = irq_gc_mask_set_bit;
>> gc->chip_types->chip.irq_set_type = stm32_irq_set_type;
>> gc->chip_types->chip.irq_set_wake = stm32_irq_set_wake;
>> - gc->chip_types->regs.ack = stm32_bank->pr_ofst;
>> - gc->chip_types->regs.mask = stm32_bank->imr_ofst;
>> gc->private = (void *)stm32_bank;
>> /* Determine number of irqs supported */
>>
>
> BR
> Ludo

\
 
 \ /
  Last update: 2018-02-22 12:02    [W:0.068 / U:0.684 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site