| Message ID | 1472046551-703-4-git-send-email-cw00.choi@samsung.com (mailing list archive) |
|---|---|
| State | Changes Requested |
| Headers | show |
Hi Chanwoo, 2016-08-24 22:49 GMT+09:00 Chanwoo Choi <cw00.choi@samsung.com>: > This patch supports the multiple IORESOURCE_MEM resources for one pin-bank. > In the pre-existing Exynos series, the registers of the gpio bank are included > in the one memory map. But, some gpio bank need to support the one more memory > map (IORESOURCE_MEM) because the registers of gpio bank are located in > the different memory map. Please see my comments inline. > diff --git a/Documentation/devicetree/bindings/pinctrl/samsung-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/samsung-pinctrl.txt > index 6db16b90873a..37bc692445d4 100644 > --- a/Documentation/devicetree/bindings/pinctrl/samsung-pinctrl.txt > +++ b/Documentation/devicetree/bindings/pinctrl/samsung-pinctrl.txt > @@ -94,6 +94,11 @@ Required Properties: > pin configuration should use the bindings listed in the "pinctrl-bindings.txt" > file. > > +Optional Properties: > +- reg: Second base address of the pin controller hardware module and length of > + the address space it occupies if the specific register of the pin controller > + are located in the different base address. > + I believe it should be required for certain controllers instead. So it should be moved to required properties and a list of compatible string and controller indices that need this second entry added. It should be also precisely stated what are the first and second entry supposed to point to for given controllers. > diff --git a/drivers/pinctrl/samsung/pinctrl-exynos.h b/drivers/pinctrl/samsung/pinctrl-exynos.h > index 0f0f7cedb2dc..865a84c32fdc 100644 > --- a/drivers/pinctrl/samsung/pinctrl-exynos.h > +++ b/drivers/pinctrl/samsung/pinctrl-exynos.h > @@ -56,7 +56,9 @@ > .pctl_offset = reg, \ > .nr_pins = pins, \ > .eint_type = EINT_TYPE_NONE, \ > - .name = id \ > + .name = id, \ > + .pctl_res_idx = 0, \ > + .eint_res_idx = 0 \ No need to explicitly initialize to 0. > } > > #define EXYNOS_PIN_BANK_EINTG(pins, reg, id, offs) \ > @@ -66,7 +68,9 @@ > .nr_pins = pins, \ > .eint_type = EINT_TYPE_GPIO, \ > .eint_offset = offs, \ > - .name = id \ > + .name = id, \ > + .pctl_res_idx = 0, \ > + .eint_res_idx = 0 \ Ditto. > } > > #define EXYNOS_PIN_BANK_EINTW(pins, reg, id, offs) \ > @@ -76,7 +80,44 @@ > .nr_pins = pins, \ > .eint_type = EINT_TYPE_WKUP, \ > .eint_offset = offs, \ > - .name = id \ > + .name = id, \ > + .pctl_res_idx = 0, \ > + .eint_res_idx = 0 \ Ditto. > + } > + > +#define EXYNOS_PIN_BANK_EINTN_EXT(pins, reg, id, pctl_idx, eint_idx) \ > + { \ > + .type = &bank_type_off, \ > + .pctl_offset = reg, \ > + .nr_pins = pins, \ > + .eint_type = EINT_TYPE_NONE, \ > + .name = id, \ > + .pctl_res_idx = pctl_idx, \ > + .eint_res_idx = eint_dix \ > + } Your patch 4/7 doesn't seem to use this one, so this is dead code for the time being. Please add when there is real need for it. Also it doesn't really make much sense to have index for both pctl and eint. Please define first entry of regs property as always pointing to pctl registers and by also eint registers for usual controllers. Then second regs entry would be eint registers for controllers with separate register blocks. Then there is only a need to have eint_res_idx in the driver and no need for pctl_res_idx, because it would be always 0. > + > +#define EXYNOS_PIN_BANK_EINTG_EXT(pins, reg, id, offs, pctl_idx, eint_idx) \ > + { \ > + .type = &bank_type_off, \ > + .pctl_offset = reg, \ > + .nr_pins = pins, \ > + .eint_type = EINT_TYPE_GPIO, \ > + .eint_offset = offs, \ > + .name = id, \ > + .pctl_res_idx = pctl_idx, \ > + .eint_res_idx = eint_idx \ > + } Ditto. > + > +#define EXYNOS_PIN_BANK_EINTW_EXT(pins, reg, id, offs, pctl_idx, eint_idx) \ > + { \ > + .type = &bank_type_alive, \ > + .pctl_offset = reg, \ > + .nr_pins = pins, \ > + .eint_type = EINT_TYPE_WKUP, \ > + .eint_offset = offs, \ > + .name = id, \ > + .pctl_res_idx = pctl_idx, \ > + .eint_res_idx = eint_idx \ > } > > /** > diff --git a/drivers/pinctrl/samsung/pinctrl-samsung.c b/drivers/pinctrl/samsung/pinctrl-samsung.c > index 513fe6b23248..f63f7608aef6 100644 > --- a/drivers/pinctrl/samsung/pinctrl-samsung.c > +++ b/drivers/pinctrl/samsung/pinctrl-samsung.c > @@ -338,6 +338,7 @@ static void pin_to_reg_bank(struct samsung_pinctrl_drv_data *drvdata, > struct samsung_pin_bank **bank) > { > struct samsung_pin_bank *b; > + unsigned int pctl_res_idx; > > b = drvdata->pin_banks; > > @@ -345,7 +346,8 @@ static void pin_to_reg_bank(struct samsung_pinctrl_drv_data *drvdata, > ((b->pin_base + b->nr_pins - 1) < pin)) > b++; > > - *reg = drvdata->virt_base + b->pctl_offset; > + pctl_res_idx = b->pctl_res_idx; > + *reg = drvdata->virt_base[pctl_res_idx] + b->pctl_offset; I suggested something slightly different. Instead of bank::pctl_res_idx, I proposed bank::pctl_base. bank_info::pctl_res_idx would be specified only in init driver data and bank::pctl_base would be calculated at probe time as drvdata->virt_base[bank_info->pctl_res_idx] + bank_info->pctl_offset. This would eliminate the need to do any indexing and adding further in the code and make things simpler. Taking my other comments above, pctl part would be unchanged and only eint addresses and offsets would be affected. > > + d->virt_base = devm_kzalloc(&pdev->dev, sizeof(void __iomem) * > + (ctrl->nr_ext_resources + 1), GFP_KERNEL); > + if (!d->virt_base) > + return NULL; Can we just define SAMSUNG_PiNCTRL_NUM_EXT_RESOURCES to 2 and have a static array? Also error code information is lost here by returning NULL. > + > + for (j = 0 ; j < ctrl->nr_ext_resources + 1; j++) { > + res = platform_get_resource(pdev, IORESOURCE_MEM, j); > + d->virt_base[j] = devm_ioremap_resource(&pdev->dev, res); > + if (IS_ERR(d->virt_base[j])) > + return NULL; This causes the error code information to be lost. Error > + } > + > + res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); > + if (res) > + d->irq = res->start; > + Also why all the code above was moved out of samsung_pinctrl_probe()? Best regards, Tomasz -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
2016-08-25 23:30 GMT+09:00 Tomasz Figa <tomasz.figa@gmail.com>: >> + } >> + >> +#define EXYNOS_PIN_BANK_EINTN_EXT(pins, reg, id, pctl_idx, eint_idx) \ >> + { \ >> + .type = &bank_type_off, \ >> + .pctl_offset = reg, \ >> + .nr_pins = pins, \ >> + .eint_type = EINT_TYPE_NONE, \ >> + .name = id, \ >> + .pctl_res_idx = pctl_idx, \ >> + .eint_res_idx = eint_dix \ >> + } > > Your patch 4/7 doesn't seem to use this one, so this is dead code for > the time being. Please add when there is real need for it. > > Also it doesn't really make much sense to have index for both pctl and > eint. Please define first entry of regs property as always pointing to > pctl registers and by also eint registers for usual controllers. Then > second regs entry would be eint registers for controllers with > separate register blocks. Then there is only a need to have > eint_res_idx in the driver and no need for pctl_res_idx, because it > would be always 0. Ah, sorry, I got confused again by which registers are where in these GPF banks. Let's make it the other way around and make DT contain eint registers in first regs entry and hardcode eint_res_idx to 0 for the time being. However it should be still beneficial to refactor the code and calculate per-bank eint_base to avoid adding the offset every time, similarly to pctl_base/offset, from my suggestion below. >> @@ -345,7 +346,8 @@ static void pin_to_reg_bank(struct samsung_pinctrl_drv_data *drvdata, >> ((b->pin_base + b->nr_pins - 1) < pin)) >> b++; >> >> - *reg = drvdata->virt_base + b->pctl_offset; >> + pctl_res_idx = b->pctl_res_idx; >> + *reg = drvdata->virt_base[pctl_res_idx] + b->pctl_offset; > > I suggested something slightly different. Instead of > bank::pctl_res_idx, I proposed bank::pctl_base. > bank_info::pctl_res_idx would be specified only in init driver data > and bank::pctl_base would be calculated at probe time as > drvdata->virt_base[bank_info->pctl_res_idx] + bank_info->pctl_offset. > This would eliminate the need to do any indexing and adding further in > the code and make things simpler. > > Taking my other comments above, pctl part would be unchanged and only > eint addresses and offsets would be affected. Ah, scratch this one sentence. I got confused with the register layout again, sorry. Please refactor both eint and pctl as I suggested in the upper paragraph. Best regards, Tomasz -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi Tomasz, I'm sorry for late reply. On 2016년 08월 25일 23:41, Tomasz Figa wrote: > 2016-08-25 23:30 GMT+09:00 Tomasz Figa <tomasz.figa@gmail.com>: >>> + } >>> + >>> +#define EXYNOS_PIN_BANK_EINTN_EXT(pins, reg, id, pctl_idx, eint_idx) \ >>> + { \ >>> + .type = &bank_type_off, \ >>> + .pctl_offset = reg, \ >>> + .nr_pins = pins, \ >>> + .eint_type = EINT_TYPE_NONE, \ >>> + .name = id, \ >>> + .pctl_res_idx = pctl_idx, \ >>> + .eint_res_idx = eint_dix \ >>> + } >> >> Your patch 4/7 doesn't seem to use this one, so this is dead code for >> the time being. Please add when there is real need for it. >> >> Also it doesn't really make much sense to have index for both pctl and >> eint. Please define first entry of regs property as always pointing to >> pctl registers and by also eint registers for usual controllers. Then >> second regs entry would be eint registers for controllers with >> separate register blocks. Then there is only a need to have >> eint_res_idx in the driver and no need for pctl_res_idx, because it >> would be always 0. > > Ah, sorry, I got confused again by which registers are where in these > GPF banks. Let's make it the other way around and make DT contain eint > registers in first regs entry and hardcode eint_res_idx to 0 for the > time being. I got with slight confusion. Do you mean that you want to remove the 'eint_res_idx' because it is always zero(0) as your comment. And do you agree to add 'pctl_res_idx'? Also, as you commented, the eint_res_idx for both GPA and GPFx is zero(0). Example: pinctrl_alive: pinctrl@10580000 { compatible = "samsung,exynos5433-pinctrl"; /* ALIVE domain , IMEM domain */ reg = <0x10580000 0x1a20>, <0x11090000 0x100>; wakeup-interrupt-controller { compatible = "samsung,exynos7-wakeup-eint"; interrupts = <GIC_SPI 16 0>; }; }; GPA's eint_res_idx is 0 GPA's pctl_res_idx is 0 GPFx's eint_res_idx is 0 GPFx's pctl_res_idx is 1 However it should be still beneficial to refactor the code > and calculate per-bank eint_base to avoid adding the offset every > time, similarly to pctl_base/offset, from my suggestion below. I agree. I'll modify it according to your comment. > >>> @@ -345,7 +346,8 @@ static void pin_to_reg_bank(struct samsung_pinctrl_drv_data *drvdata, >>> ((b->pin_base + b->nr_pins - 1) < pin)) >>> b++; >>> >>> - *reg = drvdata->virt_base + b->pctl_offset; >>> + pctl_res_idx = b->pctl_res_idx; >>> + *reg = drvdata->virt_base[pctl_res_idx] + b->pctl_offset; >> >> I suggested something slightly different. Instead of >> bank::pctl_res_idx, I proposed bank::pctl_base. >> bank_info::pctl_res_idx would be specified only in init driver data >> and bank::pctl_base would be calculated at probe time as >> drvdata->virt_base[bank_info->pctl_res_idx] + bank_info->pctl_offset. >> This would eliminate the need to do any indexing and adding further in >> the code and make things simpler. >> >> Taking my other comments above, pctl part would be unchanged and only >> eint addresses and offsets would be affected. > > Ah, scratch this one sentence. I got confused with the register layout > again, sorry. Please refactor both eint and pctl as I suggested in the > upper paragraph. > > Best regards, > Tomasz > -- > To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > > >
Hi Chanwoo, Sorry for late reply. Yours was quick compared to mine. ;( 2016-09-05 17:08 GMT+09:00 Chanwoo Choi <cw00.choi@samsung.com>: > Hi Tomasz, > > I'm sorry for late reply. > > On 2016년 08월 25일 23:41, Tomasz Figa wrote: >> 2016-08-25 23:30 GMT+09:00 Tomasz Figa <tomasz.figa@gmail.com>: >>>> + } >>>> + >>>> +#define EXYNOS_PIN_BANK_EINTN_EXT(pins, reg, id, pctl_idx, eint_idx) \ >>>> + { \ >>>> + .type = &bank_type_off, \ >>>> + .pctl_offset = reg, \ >>>> + .nr_pins = pins, \ >>>> + .eint_type = EINT_TYPE_NONE, \ >>>> + .name = id, \ >>>> + .pctl_res_idx = pctl_idx, \ >>>> + .eint_res_idx = eint_dix \ >>>> + } >>> >>> Your patch 4/7 doesn't seem to use this one, so this is dead code for >>> the time being. Please add when there is real need for it. >>> >>> Also it doesn't really make much sense to have index for both pctl and >>> eint. Please define first entry of regs property as always pointing to >>> pctl registers and by also eint registers for usual controllers. Then >>> second regs entry would be eint registers for controllers with >>> separate register blocks. Then there is only a need to have >>> eint_res_idx in the driver and no need for pctl_res_idx, because it >>> would be always 0. >> >> Ah, sorry, I got confused again by which registers are where in these >> GPF banks. Let's make it the other way around and make DT contain eint >> registers in first regs entry and hardcode eint_res_idx to 0 for the >> time being. > > I got with slight confusion. > Do you mean that you want to remove the 'eint_res_idx' because > it is always zero(0) as your comment. And do you agree to add 'pctl_res_idx'? > > Also, as you commented, the eint_res_idx for both GPA and GPFx is zero(0). > > Example: > pinctrl_alive: pinctrl@10580000 { > compatible = "samsung,exynos5433-pinctrl"; > /* ALIVE domain , IMEM domain */ > reg = <0x10580000 0x1a20>, <0x11090000 0x100>; > > wakeup-interrupt-controller { > compatible = "samsung,exynos7-wakeup-eint"; > interrupts = <GIC_SPI 16 0>; > }; > }; > > GPA's eint_res_idx is 0 > GPA's pctl_res_idx is 0 > > GPFx's eint_res_idx is 0 > GPFx's pctl_res_idx is 1 Yeah, that's right. I just want to avoid adding eint_res_idx until it is found to be really needed. > > > However it should be still beneficial to refactor the code >> and calculate per-bank eint_base to avoid adding the offset every >> time, similarly to pctl_base/offset, from my suggestion below. > > I agree. I'll modify it according to your comment. Thanks. Looking forward to the patch. Best regards, Tomasz -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/Documentation/devicetree/bindings/pinctrl/samsung-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/samsung-pinctrl.txt index 6db16b90873a..37bc692445d4 100644 --- a/Documentation/devicetree/bindings/pinctrl/samsung-pinctrl.txt +++ b/Documentation/devicetree/bindings/pinctrl/samsung-pinctrl.txt @@ -94,6 +94,11 @@ Required Properties: pin configuration should use the bindings listed in the "pinctrl-bindings.txt" file. +Optional Properties: +- reg: Second base address of the pin controller hardware module and length of + the address space it occupies if the specific register of the pin controller + are located in the different base address. + External GPIO and Wakeup Interrupts: The controller supports two types of external interrupts over gpio. The first @@ -305,6 +310,18 @@ Example 2: A pin-controller node with external wakeup interrupt controller node. }; }; + - A pin-controller node with multiple base address. + + pinctrl_0: pinctrl@10580000 { + compatible = "samsung,exynos5433-pinctrl"; + reg = <0x10580000 0x1a20>, <0x11090000 0x100>; + + wakeup-interrupt-controller { + compatible = "samsung,exynos7-wakeup-eint"; + interrupts = <0 16 0>; + }; + }; + Example 3: A uart client node that supports 'default' and 'flow-control' states. uart@13800000 { diff --git a/drivers/pinctrl/samsung/pinctrl-exynos.c b/drivers/pinctrl/samsung/pinctrl-exynos.c index 051b5bf701a8..12fa9d3f1113 100644 --- a/drivers/pinctrl/samsung/pinctrl-exynos.c +++ b/drivers/pinctrl/samsung/pinctrl-exynos.c @@ -65,12 +65,13 @@ static void exynos_irq_mask(struct irq_data *irqd) unsigned long reg_mask = our_chip->eint_mask + bank->eint_offset; unsigned long mask; unsigned long flags; + unsigned int eint_res_idx = bank->eint_res_idx; spin_lock_irqsave(&bank->slock, flags); - mask = readl(d->virt_base + reg_mask); + mask = readl(d->virt_base[eint_res_idx] + reg_mask); mask |= 1 << irqd->hwirq; - writel(mask, d->virt_base + reg_mask); + writel(mask, d->virt_base[eint_res_idx] + reg_mask); spin_unlock_irqrestore(&bank->slock, flags); } @@ -82,8 +83,9 @@ static void exynos_irq_ack(struct irq_data *irqd) struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(irqd); struct samsung_pinctrl_drv_data *d = bank->drvdata; unsigned long reg_pend = our_chip->eint_pend + bank->eint_offset; + unsigned int eint_res_idx = bank->eint_res_idx; - writel(1 << irqd->hwirq, d->virt_base + reg_pend); + writel(1 << irqd->hwirq, d->virt_base[eint_res_idx] + reg_pend); } static void exynos_irq_unmask(struct irq_data *irqd) @@ -95,6 +97,7 @@ static void exynos_irq_unmask(struct irq_data *irqd) unsigned long reg_mask = our_chip->eint_mask + bank->eint_offset; unsigned long mask; unsigned long flags; + unsigned int eint_res_idx = bank->eint_res_idx; /* * Ack level interrupts right before unmask @@ -109,9 +112,9 @@ static void exynos_irq_unmask(struct irq_data *irqd) spin_lock_irqsave(&bank->slock, flags); - mask = readl(d->virt_base + reg_mask); + mask = readl(d->virt_base[eint_res_idx] + reg_mask); mask &= ~(1 << irqd->hwirq); - writel(mask, d->virt_base + reg_mask); + writel(mask, d->virt_base[eint_res_idx] + reg_mask); spin_unlock_irqrestore(&bank->slock, flags); } @@ -125,6 +128,7 @@ static int exynos_irq_set_type(struct irq_data *irqd, unsigned int type) unsigned int shift = EXYNOS_EINT_CON_LEN * irqd->hwirq; unsigned int con, trig_type; unsigned long reg_con = our_chip->eint_con + bank->eint_offset; + unsigned int eint_res_idx = bank->eint_res_idx; switch (type) { case IRQ_TYPE_EDGE_RISING: @@ -152,10 +156,10 @@ static int exynos_irq_set_type(struct irq_data *irqd, unsigned int type) else irq_set_handler_locked(irqd, handle_level_irq); - con = readl(d->virt_base + reg_con); + con = readl(d->virt_base[eint_res_idx] + reg_con); con &= ~(EXYNOS_EINT_CON_MASK << shift); con |= trig_type << shift; - writel(con, d->virt_base + reg_con); + writel(con, d->virt_base[eint_res_idx] + reg_con); return 0; } @@ -169,6 +173,7 @@ static int exynos_irq_request_resources(struct irq_data *irqd) struct samsung_pinctrl_drv_data *d = bank->drvdata; unsigned int shift = EXYNOS_EINT_CON_LEN * irqd->hwirq; unsigned long reg_con = our_chip->eint_con + bank->eint_offset; + unsigned int eint_res_idx = bank->eint_res_idx; unsigned long flags; unsigned int mask; unsigned int con; @@ -188,10 +193,10 @@ static int exynos_irq_request_resources(struct irq_data *irqd) spin_lock_irqsave(&bank->slock, flags); - con = readl(d->virt_base + reg_con); + con = readl(d->virt_base[eint_res_idx] + reg_con); con &= ~(mask << shift); con |= EXYNOS_EINT_FUNC << shift; - writel(con, d->virt_base + reg_con); + writel(con, d->virt_base[eint_res_idx] + reg_con); spin_unlock_irqrestore(&bank->slock, flags); @@ -209,6 +214,7 @@ static void exynos_irq_release_resources(struct irq_data *irqd) struct samsung_pinctrl_drv_data *d = bank->drvdata; unsigned int shift = EXYNOS_EINT_CON_LEN * irqd->hwirq; unsigned long reg_con = our_chip->eint_con + bank->eint_offset; + unsigned int eint_res_idx = bank->eint_res_idx; unsigned long flags; unsigned int mask; unsigned int con; @@ -221,10 +227,10 @@ static void exynos_irq_release_resources(struct irq_data *irqd) spin_lock_irqsave(&bank->slock, flags); - con = readl(d->virt_base + reg_con); + con = readl(d->virt_base[eint_res_idx] + reg_con); con &= ~(mask << shift); con |= FUNC_INPUT << shift; - writel(con, d->virt_base + reg_con); + writel(con, d->virt_base[eint_res_idx] + reg_con); spin_unlock_irqrestore(&bank->slock, flags); @@ -272,9 +278,10 @@ static irqreturn_t exynos_eint_gpio_irq(int irq, void *data) { struct samsung_pinctrl_drv_data *d = data; struct samsung_pin_bank *bank = d->pin_banks; + unsigned int eint_res_idx = bank->eint_res_idx; unsigned int svc, group, pin, virq; - svc = readl(d->virt_base + EXYNOS_SVC_OFFSET); + svc = readl(d->virt_base[eint_res_idx] + EXYNOS_SVC_OFFSET); group = EXYNOS_SVC_GROUP(svc); pin = svc & EXYNOS_SVC_NUM_MASK; @@ -465,10 +472,11 @@ static void exynos_irq_demux_eint16_31(struct irq_desc *desc) for (i = 0; i < eintd->nr_banks; ++i) { struct samsung_pin_bank *b = eintd->banks[i]; - pend = readl(d->virt_base + b->irq_chip->eint_pend - + b->eint_offset); - mask = readl(d->virt_base + b->irq_chip->eint_mask - + b->eint_offset); + unsigned int eint_res_idx = b->eint_res_idx; + pend = readl(d->virt_base[eint_res_idx] + + b->irq_chip->eint_pend + b->eint_offset); + mask = readl(d->virt_base[eint_res_idx] + + b->irq_chip->eint_mask + b->eint_offset); exynos_irq_demux_eint(pend & ~mask, b->irq_domain); } @@ -585,7 +593,8 @@ static void exynos_pinctrl_suspend_bank( struct samsung_pin_bank *bank) { struct exynos_eint_gpio_save *save = bank->soc_priv; - void __iomem *regs = drvdata->virt_base; + unsigned int eint_res_idx = bank->eint_res_idx; + void __iomem *regs = drvdata->virt_base[eint_res_idx]; save->eint_con = readl(regs + EXYNOS_GPIO_ECON_OFFSET + bank->eint_offset); @@ -614,7 +623,8 @@ static void exynos_pinctrl_resume_bank( struct samsung_pin_bank *bank) { struct exynos_eint_gpio_save *save = bank->soc_priv; - void __iomem *regs = drvdata->virt_base; + unsigned int eint_res_idx = bank->eint_res_idx; + void __iomem *regs = drvdata->virt_base[eint_res_idx]; pr_debug("%s: con %#010x => %#010x\n", bank->name, readl(regs + EXYNOS_GPIO_ECON_OFFSET diff --git a/drivers/pinctrl/samsung/pinctrl-exynos.h b/drivers/pinctrl/samsung/pinctrl-exynos.h index 0f0f7cedb2dc..865a84c32fdc 100644 --- a/drivers/pinctrl/samsung/pinctrl-exynos.h +++ b/drivers/pinctrl/samsung/pinctrl-exynos.h @@ -56,7 +56,9 @@ .pctl_offset = reg, \ .nr_pins = pins, \ .eint_type = EINT_TYPE_NONE, \ - .name = id \ + .name = id, \ + .pctl_res_idx = 0, \ + .eint_res_idx = 0 \ } #define EXYNOS_PIN_BANK_EINTG(pins, reg, id, offs) \ @@ -66,7 +68,9 @@ .nr_pins = pins, \ .eint_type = EINT_TYPE_GPIO, \ .eint_offset = offs, \ - .name = id \ + .name = id, \ + .pctl_res_idx = 0, \ + .eint_res_idx = 0 \ } #define EXYNOS_PIN_BANK_EINTW(pins, reg, id, offs) \ @@ -76,7 +80,44 @@ .nr_pins = pins, \ .eint_type = EINT_TYPE_WKUP, \ .eint_offset = offs, \ - .name = id \ + .name = id, \ + .pctl_res_idx = 0, \ + .eint_res_idx = 0 \ + } + +#define EXYNOS_PIN_BANK_EINTN_EXT(pins, reg, id, pctl_idx, eint_idx) \ + { \ + .type = &bank_type_off, \ + .pctl_offset = reg, \ + .nr_pins = pins, \ + .eint_type = EINT_TYPE_NONE, \ + .name = id, \ + .pctl_res_idx = pctl_idx, \ + .eint_res_idx = eint_dix \ + } + +#define EXYNOS_PIN_BANK_EINTG_EXT(pins, reg, id, offs, pctl_idx, eint_idx) \ + { \ + .type = &bank_type_off, \ + .pctl_offset = reg, \ + .nr_pins = pins, \ + .eint_type = EINT_TYPE_GPIO, \ + .eint_offset = offs, \ + .name = id, \ + .pctl_res_idx = pctl_idx, \ + .eint_res_idx = eint_idx \ + } + +#define EXYNOS_PIN_BANK_EINTW_EXT(pins, reg, id, offs, pctl_idx, eint_idx) \ + { \ + .type = &bank_type_alive, \ + .pctl_offset = reg, \ + .nr_pins = pins, \ + .eint_type = EINT_TYPE_WKUP, \ + .eint_offset = offs, \ + .name = id, \ + .pctl_res_idx = pctl_idx, \ + .eint_res_idx = eint_idx \ } /** diff --git a/drivers/pinctrl/samsung/pinctrl-samsung.c b/drivers/pinctrl/samsung/pinctrl-samsung.c index 513fe6b23248..f63f7608aef6 100644 --- a/drivers/pinctrl/samsung/pinctrl-samsung.c +++ b/drivers/pinctrl/samsung/pinctrl-samsung.c @@ -338,6 +338,7 @@ static void pin_to_reg_bank(struct samsung_pinctrl_drv_data *drvdata, struct samsung_pin_bank **bank) { struct samsung_pin_bank *b; + unsigned int pctl_res_idx; b = drvdata->pin_banks; @@ -345,7 +346,8 @@ static void pin_to_reg_bank(struct samsung_pinctrl_drv_data *drvdata, ((b->pin_base + b->nr_pins - 1) < pin)) b++; - *reg = drvdata->virt_base + b->pctl_offset; + pctl_res_idx = b->pctl_res_idx; + *reg = drvdata->virt_base[pctl_res_idx] + b->pctl_offset; *offset = pin - b->pin_base; if (bank) *bank = b; @@ -524,9 +526,10 @@ static void samsung_gpio_set_value(struct gpio_chip *gc, struct samsung_pin_bank *bank = gpiochip_get_data(gc); const struct samsung_pin_bank_type *type = bank->type; void __iomem *reg; + unsigned int pctl_res_idx = bank->pctl_res_idx; u32 data; - reg = bank->drvdata->virt_base + bank->pctl_offset; + reg = bank->drvdata->virt_base[pctl_res_idx] + bank->pctl_offset; data = readl(reg + type->reg_offset[PINCFG_TYPE_DAT]); data &= ~(1 << offset); @@ -553,8 +556,9 @@ static int samsung_gpio_get(struct gpio_chip *gc, unsigned offset) u32 data; struct samsung_pin_bank *bank = gpiochip_get_data(gc); const struct samsung_pin_bank_type *type = bank->type; + unsigned int pctl_res_idx = bank->pctl_res_idx; - reg = bank->drvdata->virt_base + bank->pctl_offset; + reg = bank->drvdata->virt_base[pctl_res_idx] + bank->pctl_offset; data = readl(reg + type->reg_offset[PINCFG_TYPE_DAT]); data >>= offset; @@ -575,13 +579,15 @@ static int samsung_gpio_set_direction(struct gpio_chip *gc, struct samsung_pin_bank *bank; struct samsung_pinctrl_drv_data *drvdata; void __iomem *reg; + unsigned int pctl_res_idx; u32 data, mask, shift; bank = gpiochip_get_data(gc); type = bank->type; drvdata = bank->drvdata; + pctl_res_idx = bank->pctl_res_idx; - reg = drvdata->virt_base + bank->pctl_offset + + reg = drvdata->virt_base[pctl_res_idx] + bank->pctl_offset + type->reg_offset[PINCFG_TYPE_FUNC]; mask = (1 << type->fld_width[PINCFG_TYPE_FUNC]) - 1; @@ -979,7 +985,8 @@ samsung_pinctrl_get_soc_data(struct samsung_pinctrl_drv_data *d, const struct samsung_pin_bank_data *bdata; const struct samsung_pin_ctrl *ctrl; struct samsung_pin_bank *bank; - int i; + struct resource *res; + int i, j; id = of_alias_get_id(node, "pinctrl"); if (id < 0) { @@ -1008,6 +1015,8 @@ samsung_pinctrl_get_soc_data(struct samsung_pinctrl_drv_data *d, bank->eint_mask = bdata->eint_mask; bank->eint_offset = bdata->eint_offset; bank->name = bdata->name; + bank->pctl_res_idx = bdata->pctl_res_idx; + bank->eint_res_idx = bdata->eint_res_idx; spin_lock_init(&bank->slock); bank->drvdata = d; @@ -1015,6 +1024,22 @@ samsung_pinctrl_get_soc_data(struct samsung_pinctrl_drv_data *d, d->nr_pins += bank->nr_pins; } + d->virt_base = devm_kzalloc(&pdev->dev, sizeof(void __iomem) * + (ctrl->nr_ext_resources + 1), GFP_KERNEL); + if (!d->virt_base) + return NULL; + + for (j = 0 ; j < ctrl->nr_ext_resources + 1; j++) { + res = platform_get_resource(pdev, IORESOURCE_MEM, j); + d->virt_base[j] = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(d->virt_base[j])) + return NULL; + } + + res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); + if (res) + d->irq = res->start; + for_each_child_of_node(node, np) { if (!of_find_property(np, "gpio-controller", NULL)) continue; @@ -1038,7 +1063,6 @@ static int samsung_pinctrl_probe(struct platform_device *pdev) struct samsung_pinctrl_drv_data *drvdata; const struct samsung_pin_ctrl *ctrl; struct device *dev = &pdev->dev; - struct resource *res; int ret; if (!dev->of_node) { @@ -1060,15 +1084,6 @@ static int samsung_pinctrl_probe(struct platform_device *pdev) } drvdata->dev = dev; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - drvdata->virt_base = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(drvdata->virt_base)) - return PTR_ERR(drvdata->virt_base); - - res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); - if (res) - drvdata->irq = res->start; - ret = samsung_gpiolib_register(pdev, drvdata); if (ret) return ret; @@ -1102,12 +1117,13 @@ static int samsung_pinctrl_probe(struct platform_device *pdev) static void samsung_pinctrl_suspend_dev( struct samsung_pinctrl_drv_data *drvdata) { - void __iomem *virt_base = drvdata->virt_base; int i; for (i = 0; i < drvdata->nr_banks; i++) { struct samsung_pin_bank *bank = &drvdata->pin_banks[i]; - void __iomem *reg = virt_base + bank->pctl_offset; + unsigned int pctl_res_idx = bank->pctl_res_idx; + void __iomem *reg = + drvdata->virt_base[pctl_res_idx] + bank->pctl_offset; const u8 *offs = bank->type->reg_offset; const u8 *widths = bank->type->fld_width; enum pincfg_type type; @@ -1148,7 +1164,6 @@ static void samsung_pinctrl_suspend_dev( */ static void samsung_pinctrl_resume_dev(struct samsung_pinctrl_drv_data *drvdata) { - void __iomem *virt_base = drvdata->virt_base; int i; if (drvdata->resume) @@ -1156,7 +1171,9 @@ static void samsung_pinctrl_resume_dev(struct samsung_pinctrl_drv_data *drvdata) for (i = 0; i < drvdata->nr_banks; i++) { struct samsung_pin_bank *bank = &drvdata->pin_banks[i]; - void __iomem *reg = virt_base + bank->pctl_offset; + unsigned int pctl_res_idx = bank->pctl_res_idx; + void __iomem *reg = + drvdata->virt_base[pctl_res_idx] + bank->pctl_offset; const u8 *offs = bank->type->reg_offset; const u8 *widths = bank->type->fld_width; enum pincfg_type type; diff --git a/drivers/pinctrl/samsung/pinctrl-samsung.h b/drivers/pinctrl/samsung/pinctrl-samsung.h index cd31bfaf62cb..d2e4921cc2e5 100644 --- a/drivers/pinctrl/samsung/pinctrl-samsung.h +++ b/drivers/pinctrl/samsung/pinctrl-samsung.h @@ -132,6 +132,8 @@ struct samsung_pin_bank_data { u32 eint_mask; u32 eint_offset; const char *name; + unsigned int pctl_res_idx; + unsigned int eint_res_idx; }; /** @@ -164,6 +166,8 @@ struct samsung_pin_bank { u32 eint_mask; u32 eint_offset; const char *name; + unsigned int pctl_res_idx; + unsigned int eint_res_idx; u32 pin_base; void *soc_priv; @@ -190,6 +194,7 @@ struct samsung_pin_bank { struct samsung_pin_ctrl { const struct samsung_pin_bank_data *pin_banks; u32 nr_banks; + u32 nr_ext_resources; int (*eint_gpio_init)(struct samsung_pinctrl_drv_data *); int (*eint_wkup_init)(struct samsung_pinctrl_drv_data *); @@ -215,7 +220,7 @@ struct samsung_pin_ctrl { */ struct samsung_pinctrl_drv_data { struct list_head node; - void __iomem *virt_base; + void __iomem **virt_base; struct device *dev; int irq;
This patch supports the multiple IORESOURCE_MEM resources for one pin-bank. In the pre-existing Exynos series, the registers of the gpio bank are included in the one memory map. But, some gpio bank need to support the one more memory map (IORESOURCE_MEM) because the registers of gpio bank are located in the different memory map. For example, The both ALIVE and IMEM domain have the different memory base address. The GFP[1-5] of exynos5433 are composed as following: - ALIVE domain : WEINT_* registers - IMEM domain : CON/DAT/PUD/DRV/CONPDN/PUDPDN register Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Tomasz Figa <tomasz.figa@gmail.com> Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com> Cc: Sylwester Nawrocki <s.nawrocki@samsung.com> Cc: Kukjin Kim <kgene@kernel.org> Cc: linux-gpio@vger.kernel.org Suggested-by: Tomasz Figa <tomasz.figa@gmail.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> --- .../bindings/pinctrl/samsung-pinctrl.txt | 17 +++++++ drivers/pinctrl/samsung/pinctrl-exynos.c | 46 +++++++++++------- drivers/pinctrl/samsung/pinctrl-exynos.h | 47 ++++++++++++++++-- drivers/pinctrl/samsung/pinctrl-samsung.c | 55 ++++++++++++++-------- drivers/pinctrl/samsung/pinctrl-samsung.h | 7 ++- 5 files changed, 131 insertions(+), 41 deletions(-)