| Message ID | 1361164358-5845-12-git-send-email-haojian.zhuang@linaro.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 02/18/13 07:12, Haojian Zhuang wrote: > Discard irq_base in struct pxa_gpio_chip. Use irq_domain instead. > > Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org> > --- > drivers/gpio/gpio-pxa.c | 91 +++++++++++++++++++++++------------------------ > 1 file changed, 44 insertions(+), 47 deletions(-) [...] > > diff --git a/drivers/gpio/gpio-pxa.c b/drivers/gpio/gpio-pxa.c > index 35cdb23..d45cb57 100644 > --- a/drivers/gpio/gpio-pxa.c > +++ b/drivers/gpio/gpio-pxa.c > @@ -66,8 +66,8 @@ int pxa_last_gpio; > > struct pxa_gpio_chip { > struct gpio_chip chip; > + struct irq_domain *domain; > void __iomem *regbase; > - unsigned int irq_base; > bool inverted; > bool gafr; > char label[10]; > @@ -147,17 +147,7 @@ static int pxa_gpio_to_irq(struct gpio_chip *gc, unsigned offset) > struct pxa_gpio_chip *chip = NULL; > > chip = container_of(gc, struct pxa_gpio_chip, chip); > - return chip->irq_base + offset; > -} > - > -int pxa_irq_to_gpio(struct irq_data *d) > -{ > - struct pxa_gpio_chip *chip; > - int gpio; > - > - chip = (struct pxa_gpio_chip *)d->domain->host_data; > - gpio = d->irq - chip->irq_base + chip->chip.base; > - return gpio; > + return irq_create_mapping(chip->domain, offset); > } You remove the pxa_irq_to_gpio() function here, but we still have: $ grep -nr pxa_irq_to_gpio * arch/arm/mach-pxa/pxa27x.c:368: int gpio = pxa_irq_to_gpio(d); arch/arm/mach-pxa/pxa25x.c:292: int gpio = pxa_irq_to_gpio(d); include/linux/gpio-pxa.h:16:extern int pxa_irq_to_gpio(struct irq_data *d); And this in turn breaks the compilation for example with error: arch/arm/mach-pxa/built-in.o: In function `pxa27x_set_wake': em-x270.c:(.text+0x1298): undefined reference to `pxa_irq_to_gpio' make[1]: *** [vmlinux] Error 1 make: *** [sub-make] Error 2
On 18 February 2013 18:10, Igor Grinberg <grinberg@compulab.co.il> wrote: > On 02/18/13 07:12, Haojian Zhuang wrote: >> Discard irq_base in struct pxa_gpio_chip. Use irq_domain instead. >> >> Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org> >> --- >> drivers/gpio/gpio-pxa.c | 91 +++++++++++++++++++++++------------------------ >> 1 file changed, 44 insertions(+), 47 deletions(-) > > [...] > >> >> diff --git a/drivers/gpio/gpio-pxa.c b/drivers/gpio/gpio-pxa.c >> index 35cdb23..d45cb57 100644 >> --- a/drivers/gpio/gpio-pxa.c >> +++ b/drivers/gpio/gpio-pxa.c >> @@ -66,8 +66,8 @@ int pxa_last_gpio; >> >> struct pxa_gpio_chip { >> struct gpio_chip chip; >> + struct irq_domain *domain; >> void __iomem *regbase; >> - unsigned int irq_base; >> bool inverted; >> bool gafr; >> char label[10]; >> @@ -147,17 +147,7 @@ static int pxa_gpio_to_irq(struct gpio_chip *gc, unsigned offset) >> struct pxa_gpio_chip *chip = NULL; >> >> chip = container_of(gc, struct pxa_gpio_chip, chip); >> - return chip->irq_base + offset; >> -} >> - >> -int pxa_irq_to_gpio(struct irq_data *d) >> -{ >> - struct pxa_gpio_chip *chip; >> - int gpio; >> - >> - chip = (struct pxa_gpio_chip *)d->domain->host_data; >> - gpio = d->irq - chip->irq_base + chip->chip.base; >> - return gpio; >> + return irq_create_mapping(chip->domain, offset); >> } > > You remove the pxa_irq_to_gpio() function here, but we still have: > $ grep -nr pxa_irq_to_gpio * > arch/arm/mach-pxa/pxa27x.c:368: int gpio = pxa_irq_to_gpio(d); > arch/arm/mach-pxa/pxa25x.c:292: int gpio = pxa_irq_to_gpio(d); > include/linux/gpio-pxa.h:16:extern int pxa_irq_to_gpio(struct irq_data *d); > > And this in turn breaks the compilation for example with error: > arch/arm/mach-pxa/built-in.o: In function `pxa27x_set_wake': > em-x270.c:(.text+0x1298): undefined reference to `pxa_irq_to_gpio' > make[1]: *** [vmlinux] Error 1 > make: *** [sub-make] Error 2 > > > -- > Regards, > Igor. Thank you. Please drop this patch (11/12) for your test. Whatever it's DT or non-DT mode, gpio driver should work without this patch. Regards Haojian
On 02/18/13 14:10, Haojian Zhuang wrote: > On 18 February 2013 18:10, Igor Grinberg <grinberg@compulab.co.il> wrote: >> On 02/18/13 07:12, Haojian Zhuang wrote: >>> Discard irq_base in struct pxa_gpio_chip. Use irq_domain instead. >>> >>> Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org> >>> --- >>> drivers/gpio/gpio-pxa.c | 91 +++++++++++++++++++++++------------------------ >>> 1 file changed, 44 insertions(+), 47 deletions(-) >> >> [...] >> >>> >>> diff --git a/drivers/gpio/gpio-pxa.c b/drivers/gpio/gpio-pxa.c >>> index 35cdb23..d45cb57 100644 >>> --- a/drivers/gpio/gpio-pxa.c >>> +++ b/drivers/gpio/gpio-pxa.c >>> @@ -66,8 +66,8 @@ int pxa_last_gpio; >>> >>> struct pxa_gpio_chip { >>> struct gpio_chip chip; >>> + struct irq_domain *domain; >>> void __iomem *regbase; >>> - unsigned int irq_base; >>> bool inverted; >>> bool gafr; >>> char label[10]; >>> @@ -147,17 +147,7 @@ static int pxa_gpio_to_irq(struct gpio_chip *gc, unsigned offset) >>> struct pxa_gpio_chip *chip = NULL; >>> >>> chip = container_of(gc, struct pxa_gpio_chip, chip); >>> - return chip->irq_base + offset; >>> -} >>> - >>> -int pxa_irq_to_gpio(struct irq_data *d) >>> -{ >>> - struct pxa_gpio_chip *chip; >>> - int gpio; >>> - >>> - chip = (struct pxa_gpio_chip *)d->domain->host_data; >>> - gpio = d->irq - chip->irq_base + chip->chip.base; >>> - return gpio; >>> + return irq_create_mapping(chip->domain, offset); >>> } >> >> You remove the pxa_irq_to_gpio() function here, but we still have: >> $ grep -nr pxa_irq_to_gpio * >> arch/arm/mach-pxa/pxa27x.c:368: int gpio = pxa_irq_to_gpio(d); >> arch/arm/mach-pxa/pxa25x.c:292: int gpio = pxa_irq_to_gpio(d); >> include/linux/gpio-pxa.h:16:extern int pxa_irq_to_gpio(struct irq_data *d); >> >> And this in turn breaks the compilation for example with error: >> arch/arm/mach-pxa/built-in.o: In function `pxa27x_set_wake': >> em-x270.c:(.text+0x1298): undefined reference to `pxa_irq_to_gpio' >> make[1]: *** [vmlinux] Error 1 >> make: *** [sub-make] Error 2 >> >> >> -- >> Regards, >> Igor. > > Thank you. > > Please drop this patch (11/12) for your test. Whatever it's DT or non-DT mode, > gpio driver should work without this patch. Nope... The IRQ is still broken even if I drop this patch.
On 18 February 2013 21:39, Igor Grinberg <grinberg@compulab.co.il> wrote: > > > On 02/18/13 14:10, Haojian Zhuang wrote: >> On 18 February 2013 18:10, Igor Grinberg <grinberg@compulab.co.il> wrote: >>> On 02/18/13 07:12, Haojian Zhuang wrote: >>>> Discard irq_base in struct pxa_gpio_chip. Use irq_domain instead. >>>> >>>> Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org> >>>> --- >>>> drivers/gpio/gpio-pxa.c | 91 +++++++++++++++++++++++------------------------ >>>> 1 file changed, 44 insertions(+), 47 deletions(-) >>> >>> [...] >>> >>>> >>>> diff --git a/drivers/gpio/gpio-pxa.c b/drivers/gpio/gpio-pxa.c >>>> index 35cdb23..d45cb57 100644 >>>> --- a/drivers/gpio/gpio-pxa.c >>>> +++ b/drivers/gpio/gpio-pxa.c >>>> @@ -66,8 +66,8 @@ int pxa_last_gpio; >>>> >>>> struct pxa_gpio_chip { >>>> struct gpio_chip chip; >>>> + struct irq_domain *domain; >>>> void __iomem *regbase; >>>> - unsigned int irq_base; >>>> bool inverted; >>>> bool gafr; >>>> char label[10]; >>>> @@ -147,17 +147,7 @@ static int pxa_gpio_to_irq(struct gpio_chip *gc, unsigned offset) >>>> struct pxa_gpio_chip *chip = NULL; >>>> >>>> chip = container_of(gc, struct pxa_gpio_chip, chip); >>>> - return chip->irq_base + offset; >>>> -} >>>> - >>>> -int pxa_irq_to_gpio(struct irq_data *d) >>>> -{ >>>> - struct pxa_gpio_chip *chip; >>>> - int gpio; >>>> - >>>> - chip = (struct pxa_gpio_chip *)d->domain->host_data; >>>> - gpio = d->irq - chip->irq_base + chip->chip.base; >>>> - return gpio; >>>> + return irq_create_mapping(chip->domain, offset); >>>> } >>> >>> You remove the pxa_irq_to_gpio() function here, but we still have: >>> $ grep -nr pxa_irq_to_gpio * >>> arch/arm/mach-pxa/pxa27x.c:368: int gpio = pxa_irq_to_gpio(d); >>> arch/arm/mach-pxa/pxa25x.c:292: int gpio = pxa_irq_to_gpio(d); >>> include/linux/gpio-pxa.h:16:extern int pxa_irq_to_gpio(struct irq_data *d); >>> >>> And this in turn breaks the compilation for example with error: >>> arch/arm/mach-pxa/built-in.o: In function `pxa27x_set_wake': >>> em-x270.c:(.text+0x1298): undefined reference to `pxa_irq_to_gpio' >>> make[1]: *** [vmlinux] Error 1 >>> make: *** [sub-make] Error 2 >>> >>> >>> -- >>> Regards, >>> Igor. >> >> Thank you. >> >> Please drop this patch (11/12) for your test. Whatever it's DT or non-DT mode, >> gpio driver should work without this patch. > > Nope... The IRQ is still broken even if I drop this patch. > > > -- > Regards, > Igor. Could you send the full log to me? Thanks Haojian
On Mon, Feb 18, 2013 at 6:12 AM, Haojian Zhuang <haojian.zhuang@linaro.org> wrote: > Discard irq_base in struct pxa_gpio_chip. Use irq_domain instead. > > Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org> (...) > + irq_base = 0; > + chips[i].domain = irq_domain_add_simple(pdev->dev.of_node, > + gc->ngpio, irq_base, > + &pxa_irq_domain_ops, > + &chips[i]); > + if (!chips[i].domain) Aha... so not at the end you fix it up :-) Acked-by: Linus Walleij <linus.walleij@linaro.org> Maybe I can ACK all the others too then, if I know it will end up like this. But I had a few other review comments. Yours, Linus Walleij
diff --git a/drivers/gpio/gpio-pxa.c b/drivers/gpio/gpio-pxa.c index 35cdb23..d45cb57 100644 --- a/drivers/gpio/gpio-pxa.c +++ b/drivers/gpio/gpio-pxa.c @@ -66,8 +66,8 @@ int pxa_last_gpio; struct pxa_gpio_chip { struct gpio_chip chip; + struct irq_domain *domain; void __iomem *regbase; - unsigned int irq_base; bool inverted; bool gafr; char label[10]; @@ -147,17 +147,7 @@ static int pxa_gpio_to_irq(struct gpio_chip *gc, unsigned offset) struct pxa_gpio_chip *chip = NULL; chip = container_of(gc, struct pxa_gpio_chip, chip); - return chip->irq_base + offset; -} - -int pxa_irq_to_gpio(struct irq_data *d) -{ - struct pxa_gpio_chip *chip; - int gpio; - - chip = (struct pxa_gpio_chip *)d->domain->host_data; - gpio = d->irq - chip->irq_base + chip->chip.base; - return gpio; + return irq_create_mapping(chip->domain, offset); } static int pxa_gpio_request(struct gpio_chip *gc, unsigned offset) @@ -270,18 +260,19 @@ static inline void update_edge_detect(struct pxa_gpio_chip *chip) static int pxa_gpio_irq_type(struct irq_data *d, unsigned int type) { - struct pxa_gpio_chip *chip; - int gpio = pxa_irq_to_gpio(d); - unsigned long gpdr, mask = GPIO_bit(gpio); + struct pxa_gpio_chip *chip = irq_data_get_irq_chip_data(d); + int offset = irqd_to_hwirq(d); + int gpio; + unsigned long gpdr, mask; - chip = gpio_to_pxachip(gpio); + mask = 1 << offset; + gpio = chip->chip.base + offset; if (type == IRQ_TYPE_PROBE) { /* Don't mess with enabled GPIOs using preconfigured edges or * GPIOs set to alternate function or to output during probe */ - if ((chip->irq_edge_rise | chip->irq_edge_fall) - & GPIO_bit(gpio)) + if ((chip->irq_edge_rise | chip->irq_edge_fall) & mask) return 0; if (__gpio_is_occupied(chip, gpio)) @@ -318,16 +309,15 @@ static int pxa_gpio_irq_type(struct irq_data *d, unsigned int type) static void pxa_gpio_demux_handler(unsigned int irq, struct irq_desc *desc) { struct pxa_gpio_chip *chip; - int loop, gpio, gpio_base, n; - unsigned long gedr; struct irq_chip *ic = irq_desc_get_chip(desc); + int n, gpio, loop; + unsigned long gedr; chained_irq_enter(ic, desc); do { loop = 0; for_each_gpio_chip(gpio, chip) { - gpio_base = chip->chip.base; gedr = readl_relaxed(chip->regbase + GEDR_OFFSET); gedr = gedr & chip->irq_mask; @@ -335,8 +325,8 @@ static void pxa_gpio_demux_handler(unsigned int irq, struct irq_desc *desc) for_each_set_bit(n, &gedr, BITS_PER_LONG) { loop = 1; - - generic_handle_irq(gpio_to_irq(gpio_base + n)); + generic_handle_irq(pxa_gpio_to_irq(&chip->chip, + n)); } } } while (loop); @@ -346,31 +336,35 @@ static void pxa_gpio_demux_handler(unsigned int irq, struct irq_desc *desc) static void pxa_ack_muxed_gpio(struct irq_data *d) { - int gpio = pxa_irq_to_gpio(d); - struct pxa_gpio_chip *chip = gpio_to_pxachip(gpio); + struct pxa_gpio_chip *chip = irq_data_get_irq_chip_data(d); + int offset = irqd_to_hwirq(d); - writel_relaxed(GPIO_bit(gpio), chip->regbase + GEDR_OFFSET); + writel_relaxed(1 << offset, chip->regbase + GEDR_OFFSET); } static void pxa_mask_muxed_gpio(struct irq_data *d) { - int gpio = pxa_irq_to_gpio(d); - struct pxa_gpio_chip *chip = gpio_to_pxachip(gpio); + struct pxa_gpio_chip *chip = irq_data_get_irq_chip_data(d); + int offset = irqd_to_hwirq(d); + int mask; uint32_t grer, gfer; - chip->irq_mask &= ~GPIO_bit(gpio); + mask = 1 << offset; + chip->irq_mask &= ~mask; - grer = readl_relaxed(chip->regbase + GRER_OFFSET) & ~GPIO_bit(gpio); - gfer = readl_relaxed(chip->regbase + GFER_OFFSET) & ~GPIO_bit(gpio); + grer = readl_relaxed(chip->regbase + GRER_OFFSET) & ~mask; + gfer = readl_relaxed(chip->regbase + GFER_OFFSET) & ~mask; writel_relaxed(grer, chip->regbase + GRER_OFFSET); writel_relaxed(gfer, chip->regbase + GFER_OFFSET); } static int pxa_gpio_set_wake(struct irq_data *d, unsigned int on) { - int gpio = pxa_irq_to_gpio(d); - struct pxa_gpio_chip *chip = gpio_to_pxachip(gpio); + struct pxa_gpio_chip *chip = irq_data_get_irq_chip_data(d); + int offset = irqd_to_hwirq(d); + int gpio; + gpio = chip->chip.base + offset; if (chip->set_wake) return chip->set_wake(gpio, on); else @@ -379,10 +373,10 @@ static int pxa_gpio_set_wake(struct irq_data *d, unsigned int on) static void pxa_unmask_muxed_gpio(struct irq_data *d) { - int gpio = pxa_irq_to_gpio(d); - struct pxa_gpio_chip *chip = gpio_to_pxachip(gpio); + struct pxa_gpio_chip *chip = irq_data_get_irq_chip_data(d); + int offset = irqd_to_hwirq(d); - chip->irq_mask |= GPIO_bit(gpio); + chip->irq_mask |= 1 << offset; update_edge_detect(chip); } @@ -395,12 +389,16 @@ static struct irq_chip pxa_muxed_gpio_chip = { .irq_set_wake = pxa_gpio_set_wake, }; -static int pxa_irq_domain_map(struct irq_domain *d, unsigned int irq, +static int pxa_irq_domain_map(struct irq_domain *d, unsigned int virq, irq_hw_number_t hw) { - irq_set_chip_and_handler(irq, &pxa_muxed_gpio_chip, - handle_edge_irq); - set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); + struct pxa_gpio_chip *chip = d->host_data; + + irq_set_chip_and_handler_name(virq, &pxa_muxed_gpio_chip, + handle_edge_irq, "gpio"); + irq_set_chip_data(virq, chip); + irq_set_irq_type(virq, IRQ_TYPE_NONE); + set_irq_flags(virq, IRQF_VALID | IRQF_PROBE); return 0; } @@ -483,13 +481,12 @@ static int pxa_init_gpio_chip(struct platform_device *pdev, int gpio_end, if (pdata->irq_base) irq_base = pdata->irq_base + gpio; else - irq_base = -1; - chips[i].irq_base = irq_alloc_descs(irq_base, 0, gc->ngpio, 0); - if (chips[i].irq_base < 0) - return -EINVAL; - if (!irq_domain_add_legacy(pdev->dev.of_node, gc->ngpio, - chips[i].irq_base, 0, - &pxa_irq_domain_ops, &chips[i])) + irq_base = 0; + chips[i].domain = irq_domain_add_simple(pdev->dev.of_node, + gc->ngpio, irq_base, + &pxa_irq_domain_ops, + &chips[i]); + if (!chips[i].domain) return -ENODEV; gc->base = gpio;
Discard irq_base in struct pxa_gpio_chip. Use irq_domain instead. Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org> --- drivers/gpio/gpio-pxa.c | 91 +++++++++++++++++++++++------------------------ 1 file changed, 44 insertions(+), 47 deletions(-)