[PATCH] gpio: omap: Fix regression for MPUIO interrupts

[PATCH] gpio: omap: Fix regression for MPUIO interrupts

[Tony Lindgren]

At some point with all the GPIO clean-up we've broken the
MPUIO interrupts. Those are just a little bit different from
the GPIO interrupts, so we can fix it up just by setting
different irqchip functions for it. And then we can just
remove all old code trying to do the same.

Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Javier Martinez Canillas <javier@dowhile0.org>
Cc: Grygorii Strashko <grygorii.strashko@linaro.org>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Cc: Nishanth Menon <nm@ti.com>
Cc: Santosh Shilimkar <ssantosh@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
---
 drivers/gpio/gpio-omap.c | 48 +++++++++---------------------------------------
 1 file changed, 9 insertions(+), 39 deletions(-)

diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c
index 6553361..b59c3ca 100644
--- a/drivers/gpio/gpio-omap.c
+++ b/drivers/gpio/gpio-omap.c
@@ -1023,38 +1023,8 @@ static void omap_gpio_mod_init(struct gpio_bank *bank)
 		dev_err(bank->dev, "Could not get gpio dbck\n");
 }
 
-static void
-omap_mpuio_alloc_gc(struct gpio_bank *bank, unsigned int irq_start,
-		    unsigned int num)
-{
-	struct irq_chip_generic *gc;
-	struct irq_chip_type *ct;
-
-	gc = irq_alloc_generic_chip("MPUIO", 1, irq_start, bank->base,
-				    handle_simple_irq);
-	if (!gc) {
-		dev_err(bank->dev, "Memory alloc failed for gc\n");
-		return;
-	}
-
-	ct = gc->chip_types;
-
-	/* NOTE: No ack required, reading IRQ status clears it. */
-	ct->chip.irq_mask = irq_gc_mask_set_bit;
-	ct->chip.irq_unmask = irq_gc_mask_clr_bit;
-	ct->chip.irq_set_type = omap_gpio_irq_type;
-
-	if (bank->regs->wkup_en)
-		ct->chip.irq_set_wake = omap_gpio_wake_enable;
-
-	ct->regs.mask = OMAP_MPUIO_GPIO_INT / bank->stride;
-	irq_setup_generic_chip(gc, IRQ_MSK(num), IRQ_GC_INIT_MASK_CACHE,
-			       IRQ_NOREQUEST | IRQ_NOPROBE, 0);
-}
-
 static int omap_gpio_chip_init(struct gpio_bank *bank, struct irq_chip *irqc)
 {
-	int j;
 	static int gpio;
 	int irq_base = 0;
 	int ret;
@@ -1101,6 +1071,15 @@ static int omap_gpio_chip_init(struct gpio_bank *bank, struct irq_chip *irqc)
 	}
 #endif
 
+	/* MPUIO is a bit different, reading IRQ status clears it */
+	if (bank->is_mpuio) {
+		irqc->irq_ack = dummy_irq_chip.irq_ack;
+		irqc->irq_mask = irq_gc_mask_set_bit;
+		irqc->irq_unmask = irq_gc_mask_clr_bit;
+		if (!bank->regs->wkup_en)
+			irqc->irq_set_wake = NULL;
+	}
+
 	ret = gpiochip_irqchip_add(&bank->chip, irqc,
 				   irq_base, omap_gpio_irq_handler,
 				   IRQ_TYPE_NONE);
@@ -1114,15 +1093,6 @@ static int omap_gpio_chip_init(struct gpio_bank *bank, struct irq_chip *irqc)
 	gpiochip_set_chained_irqchip(&bank->chip, irqc,
 				     bank->irq, omap_gpio_irq_handler);
 
-	for (j = 0; j < bank->width; j++) {
-		int irq = irq_find_mapping(bank->chip.irqdomain, j);
-		if (bank->is_mpuio) {
-			omap_mpuio_alloc_gc(bank, irq, bank->width);
-			irq_set_chip_and_handler(irq, NULL, NULL);
-			set_irq_flags(irq, 0);
-		}
-	}
-
 	return 0;
 }
 
-- 
2.1.4

[PATCH] gpio: omap: Fix regression for MPUIO interrupts

[Grygorii.Strashko@linaro.org]

On 04/24/2015 02:54 AM, Tony Lindgren wrote:
> At some point with all the GPIO clean-up we've broken the
> MPUIO interrupts. Those are just a little bit different from
> the GPIO interrupts, so we can fix it up just by setting
> different irqchip functions for it. And then we can just
> remove all old code trying to do the same.

Reviewed-by: Grygorii Strashko <grygorii.strashko@linaro.org>

>
> Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
> Cc: Felipe Balbi <balbi@ti.com>
> Cc: Javier Martinez Canillas <javier@dowhile0.org>
> Cc: Grygorii Strashko <grygorii.strashko@linaro.org>
> Cc: Kevin Hilman <khilman@deeprootsystems.com>
> Cc: Nishanth Menon <nm@ti.com>
> Cc: Santosh Shilimkar <ssantosh@kernel.org>
> Signed-off-by: Tony Lindgren <tony@atomide.com>
> ---
>   drivers/gpio/gpio-omap.c | 48 +++++++++---------------------------------------
>   1 file changed, 9 insertions(+), 39 deletions(-)
>
> diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c
> index 6553361..b59c3ca 100644
> --- a/drivers/gpio/gpio-omap.c
> +++ b/drivers/gpio/gpio-omap.c
> @@ -1023,38 +1023,8 @@ static void omap_gpio_mod_init(struct gpio_bank *bank)
>   		dev_err(bank->dev, "Could not get gpio dbck\n");
>   }
>
> -static void
> -omap_mpuio_alloc_gc(struct gpio_bank *bank, unsigned int irq_start,
> -		    unsigned int num)
> -{
> -	struct irq_chip_generic *gc;
> -	struct irq_chip_type *ct;
> -
> -	gc = irq_alloc_generic_chip("MPUIO", 1, irq_start, bank->base,
> -				    handle_simple_irq);
> -	if (!gc) {
> -		dev_err(bank->dev, "Memory alloc failed for gc\n");
> -		return;
> -	}
> -
> -	ct = gc->chip_types;
> -
> -	/* NOTE: No ack required, reading IRQ status clears it. */
> -	ct->chip.irq_mask = irq_gc_mask_set_bit;
> -	ct->chip.irq_unmask = irq_gc_mask_clr_bit;
> -	ct->chip.irq_set_type = omap_gpio_irq_type;
> -
> -	if (bank->regs->wkup_en)
> -		ct->chip.irq_set_wake = omap_gpio_wake_enable;
> -
> -	ct->regs.mask = OMAP_MPUIO_GPIO_INT / bank->stride;
> -	irq_setup_generic_chip(gc, IRQ_MSK(num), IRQ_GC_INIT_MASK_CACHE,
> -			       IRQ_NOREQUEST | IRQ_NOPROBE, 0);
> -}
> -
>   static int omap_gpio_chip_init(struct gpio_bank *bank, struct irq_chip *irqc)
>   {
> -	int j;
>   	static int gpio;
>   	int irq_base = 0;
>   	int ret;
> @@ -1101,6 +1071,15 @@ static int omap_gpio_chip_init(struct gpio_bank *bank, struct irq_chip *irqc)
>   	}
>   #endif
>
> +	/* MPUIO is a bit different, reading IRQ status clears it */
> +	if (bank->is_mpuio) {
> +		irqc->irq_ack = dummy_irq_chip.irq_ack;
> +		irqc->irq_mask = irq_gc_mask_set_bit;
> +		irqc->irq_unmask = irq_gc_mask_clr_bit;
> +		if (!bank->regs->wkup_en)
> +			irqc->irq_set_wake = NULL;
> +	}
> +
>   	ret = gpiochip_irqchip_add(&bank->chip, irqc,
>   				   irq_base, omap_gpio_irq_handler,
>   				   IRQ_TYPE_NONE);
> @@ -1114,15 +1093,6 @@ static int omap_gpio_chip_init(struct gpio_bank *bank, struct irq_chip *irqc)
>   	gpiochip_set_chained_irqchip(&bank->chip, irqc,
>   				     bank->irq, omap_gpio_irq_handler);
>
> -	for (j = 0; j < bank->width; j++) {
> -		int irq = irq_find_mapping(bank->chip.irqdomain, j);
> -		if (bank->is_mpuio) {
> -			omap_mpuio_alloc_gc(bank, irq, bank->width);
> -			irq_set_chip_and_handler(irq, NULL, NULL);
> -			set_irq_flags(irq, 0);
> -		}
> -	}
> -
>   	return 0;
>   }
>
>


-- 
regards,
-grygorii

[PATCH] gpio: omap: Fix regression for MPUIO interrupts

[santosh shilimkar]

On 4/23/2015 4:54 PM, Tony Lindgren wrote:
> At some point with all the GPIO clean-up we've broken the
> MPUIO interrupts. Those are just a little bit different from
> the GPIO interrupts, so we can fix it up just by setting
> different irqchip functions for it. And then we can just
> remove all old code trying to do the same.
>
> Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
> Cc: Felipe Balbi <balbi@ti.com>
> Cc: Javier Martinez Canillas <javier@dowhile0.org>
> Cc: Grygorii Strashko <grygorii.strashko@linaro.org>
> Cc: Kevin Hilman <khilman@deeprootsystems.com>
> Cc: Nishanth Menon <nm@ti.com>
> Cc: Santosh Shilimkar <ssantosh@kernel.org>
> Signed-off-by: Tony Lindgren <tony@atomide.com>
> ---
Acked-by: Santosh Shilimkar <ssantosh@kernel.org>

[PATCH] gpio: omap: Fix regression for MPUIO interrupts

[Felipe Balbi]

On Thu, Apr 23, 2015 at 04:54:17PM -0700, Tony Lindgren wrote:
> At some point with all the GPIO clean-up we've broken the
> MPUIO interrupts. Those are just a little bit different from
> the GPIO interrupts, so we can fix it up just by setting
> different irqchip functions for it. And then we can just
> remove all old code trying to do the same.
> 
> Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
> Cc: Felipe Balbi <balbi@ti.com>
> Cc: Javier Martinez Canillas <javier@dowhile0.org>
> Cc: Grygorii Strashko <grygorii.strashko@linaro.org>
> Cc: Kevin Hilman <khilman@deeprootsystems.com>
> Cc: Nishanth Menon <nm@ti.com>
> Cc: Santosh Shilimkar <ssantosh@kernel.org>
> Signed-off-by: Tony Lindgren <tony@atomide.com>

Reviewed-by: Felipe Balbi <balbi@ti.com>

> ---
>  drivers/gpio/gpio-omap.c | 48 +++++++++---------------------------------------
>  1 file changed, 9 insertions(+), 39 deletions(-)
> 
> diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c
> index 6553361..b59c3ca 100644
> --- a/drivers/gpio/gpio-omap.c
> +++ b/drivers/gpio/gpio-omap.c
> @@ -1023,38 +1023,8 @@ static void omap_gpio_mod_init(struct gpio_bank *bank)
>  		dev_err(bank->dev, "Could not get gpio dbck\n");
>  }
>  
> -static void
> -omap_mpuio_alloc_gc(struct gpio_bank *bank, unsigned int irq_start,
> -		    unsigned int num)
> -{
> -	struct irq_chip_generic *gc;
> -	struct irq_chip_type *ct;
> -
> -	gc = irq_alloc_generic_chip("MPUIO", 1, irq_start, bank->base,
> -				    handle_simple_irq);
> -	if (!gc) {
> -		dev_err(bank->dev, "Memory alloc failed for gc\n");
> -		return;
> -	}
> -
> -	ct = gc->chip_types;
> -
> -	/* NOTE: No ack required, reading IRQ status clears it. */
> -	ct->chip.irq_mask = irq_gc_mask_set_bit;
> -	ct->chip.irq_unmask = irq_gc_mask_clr_bit;
> -	ct->chip.irq_set_type = omap_gpio_irq_type;
> -
> -	if (bank->regs->wkup_en)
> -		ct->chip.irq_set_wake = omap_gpio_wake_enable;
> -
> -	ct->regs.mask = OMAP_MPUIO_GPIO_INT / bank->stride;
> -	irq_setup_generic_chip(gc, IRQ_MSK(num), IRQ_GC_INIT_MASK_CACHE,
> -			       IRQ_NOREQUEST | IRQ_NOPROBE, 0);
> -}
> -
>  static int omap_gpio_chip_init(struct gpio_bank *bank, struct irq_chip *irqc)
>  {
> -	int j;
>  	static int gpio;
>  	int irq_base = 0;
>  	int ret;
> @@ -1101,6 +1071,15 @@ static int omap_gpio_chip_init(struct gpio_bank *bank, struct irq_chip *irqc)
>  	}
>  #endif
>  
> +	/* MPUIO is a bit different, reading IRQ status clears it */
> +	if (bank->is_mpuio) {
> +		irqc->irq_ack = dummy_irq_chip.irq_ack;
> +		irqc->irq_mask = irq_gc_mask_set_bit;
> +		irqc->irq_unmask = irq_gc_mask_clr_bit;
> +		if (!bank->regs->wkup_en)
> +			irqc->irq_set_wake = NULL;
> +	}
> +
>  	ret = gpiochip_irqchip_add(&bank->chip, irqc,
>  				   irq_base, omap_gpio_irq_handler,
>  				   IRQ_TYPE_NONE);
> @@ -1114,15 +1093,6 @@ static int omap_gpio_chip_init(struct gpio_bank *bank, struct irq_chip *irqc)
>  	gpiochip_set_chained_irqchip(&bank->chip, irqc,
>  				     bank->irq, omap_gpio_irq_handler);
>  
> -	for (j = 0; j < bank->width; j++) {
> -		int irq = irq_find_mapping(bank->chip.irqdomain, j);
> -		if (bank->is_mpuio) {
> -			omap_mpuio_alloc_gc(bank, irq, bank->width);
> -			irq_set_chip_and_handler(irq, NULL, NULL);
> -			set_irq_flags(irq, 0);
> -		}
> -	}
> -
>  	return 0;
>  }
>  
> -- 
> 2.1.4
> 

-- 
balbi
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[PATCH] gpio: omap: Fix regression for MPUIO interrupts

[Linus Walleij]

On Fri, Apr 24, 2015 at 1:54 AM, Tony Lindgren <tony@atomide.com> wrote:

> At some point with all the GPIO clean-up we've broken the
> MPUIO interrupts. Those are just a little bit different from
> the GPIO interrupts, so we can fix it up just by setting
> different irqchip functions for it. And then we can just
> remove all old code trying to do the same.
>
> Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
> Cc: Felipe Balbi <balbi@ti.com>
> Cc: Javier Martinez Canillas <javier@dowhile0.org>
> Cc: Grygorii Strashko <grygorii.strashko@linaro.org>
> Cc: Kevin Hilman <khilman@deeprootsystems.com>
> Cc: Nishanth Menon <nm@ti.com>
> Cc: Santosh Shilimkar <ssantosh@kernel.org>
> Signed-off-by: Tony Lindgren <tony@atomide.com>

Patch applied for fixes with the ACKs etc,

Yours,
Linus Walleij

[PATCH] gpio: omap: Fix regression for MPUIO interrupts

[Tony Lindgren]

* Linus Walleij <linus.walleij@linaro.org> [150506 06:22]:
> On Fri, Apr 24, 2015 at 1:54 AM, Tony Lindgren <tony@atomide.com> wrote:
> 
> > At some point with all the GPIO clean-up we've broken the
> > MPUIO interrupts. Those are just a little bit different from
> > the GPIO interrupts, so we can fix it up just by setting
> > different irqchip functions for it. And then we can just
> > remove all old code trying to do the same.
> >
> > Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
> > Cc: Felipe Balbi <balbi@ti.com>
> > Cc: Javier Martinez Canillas <javier@dowhile0.org>
> > Cc: Grygorii Strashko <grygorii.strashko@linaro.org>
> > Cc: Kevin Hilman <khilman@deeprootsystems.com>
> > Cc: Nishanth Menon <nm@ti.com>
> > Cc: Santosh Shilimkar <ssantosh@kernel.org>
> > Signed-off-by: Tony Lindgren <tony@atomide.com>
> 
> Patch applied for fixes with the ACKs etc,

Thanks. Yes this should go in during the -rc cycle as a regresion
fix. Sorry I could not exactly pinpoint where we've broken the
MPUIO interrupts with all the clean-up.

Also the omap1 SPARSE_IRQ changes I recently posted have a
dependency to this one so that's another reason to get this
one out of the way.

No rush with the other ones, those should be OK for v4.2.

Regards,

Tony