| Message ID | 20220526143707.767490-8-krzysztof.kozlowski@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | pinctrl/arm: dt-bindings: deprecate header with register constants | expand |
On Thu, May 26, 2022 at 4:37 PM Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> wrote: > For convenience (less code duplication, some meaning added to raw > number), the pin controller pin configuration register values > were defined in the bindings header. These are not some IDs or other > abstraction layer but raw numbers used in the registers > > These constants do not fit the purpose of bindings. They do not provide > any abstraction, any hardware and driver independent ID. With minor > exceptions, the Linux drivers actually do not use the bindings header at > all. > > All of the constants were moved already to headers local to DTS > (residing in DTS directory), so remove any references to the bindings > header and add a warning tha tit is deprecated. > > Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> This looks like something that needs to be merged on top of the other patches so if you wanna merge this through ARM SoC: Reviewed-by: Linus Walleij <linus.wallej@linaro.org> Else just tell me a merging strategy and I'll use it! Yours, Linus Walleij
On 04/06/2022 00:20, Linus Walleij wrote: > On Thu, May 26, 2022 at 4:37 PM Krzysztof Kozlowski > <krzysztof.kozlowski@linaro.org> wrote: > >> For convenience (less code duplication, some meaning added to raw >> number), the pin controller pin configuration register values >> were defined in the bindings header. These are not some IDs or other >> abstraction layer but raw numbers used in the registers >> >> These constants do not fit the purpose of bindings. They do not provide >> any abstraction, any hardware and driver independent ID. With minor >> exceptions, the Linux drivers actually do not use the bindings header at >> all. >> >> All of the constants were moved already to headers local to DTS >> (residing in DTS directory), so remove any references to the bindings >> header and add a warning tha tit is deprecated. >> >> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> > > This looks like something that needs to be merged on top of the > other patches so if you wanna merge this through ARM SoC: > Reviewed-by: Linus Walleij <linus.wallej@linaro.org> > > Else just tell me a merging strategy and I'll use it! Thanks, actually I should split the bindings from driver changes and then the driver part could be applied independently. I'll send a v3 and then I can actually handle cross-tree dependencies between both of my Samsung tree - SoC and pinctrl. Best regards, Krzysztof
diff --git a/drivers/pinctrl/samsung/pinctrl-exynos.c b/drivers/pinctrl/samsung/pinctrl-exynos.c index 6d7ca1758292..a8212fc126bf 100644 --- a/drivers/pinctrl/samsung/pinctrl-exynos.c +++ b/drivers/pinctrl/samsung/pinctrl-exynos.c @@ -27,8 +27,6 @@ #include <linux/soc/samsung/exynos-pmu.h> #include <linux/soc/samsung/exynos-regs-pmu.h> -#include <dt-bindings/pinctrl/samsung.h> - #include "pinctrl-samsung.h" #include "pinctrl-exynos.h" @@ -173,7 +171,7 @@ static int exynos_irq_request_resources(struct irq_data *irqd) con = readl(bank->pctl_base + reg_con); con &= ~(mask << shift); - con |= EXYNOS_PIN_FUNC_EINT << shift; + con |= EXYNOS_PIN_CON_FUNC_EINT << shift; writel(con, bank->pctl_base + reg_con); raw_spin_unlock_irqrestore(&bank->slock, flags); @@ -196,7 +194,7 @@ static void exynos_irq_release_resources(struct irq_data *irqd) con = readl(bank->pctl_base + reg_con); con &= ~(mask << shift); - con |= EXYNOS_PIN_FUNC_INPUT << shift; + con |= PIN_CON_FUNC_INPUT << shift; writel(con, bank->pctl_base + reg_con); raw_spin_unlock_irqrestore(&bank->slock, flags); diff --git a/drivers/pinctrl/samsung/pinctrl-exynos.h b/drivers/pinctrl/samsung/pinctrl-exynos.h index bfad1ced8017..7bd6d82c9f36 100644 --- a/drivers/pinctrl/samsung/pinctrl-exynos.h +++ b/drivers/pinctrl/samsung/pinctrl-exynos.h @@ -16,6 +16,9 @@ #ifndef __PINCTRL_SAMSUNG_EXYNOS_H #define __PINCTRL_SAMSUNG_EXYNOS_H +/* Values for the pin CON register */ +#define EXYNOS_PIN_CON_FUNC_EINT 0xf + /* External GPIO and wakeup interrupt related definitions */ #define EXYNOS_GPIO_ECON_OFFSET 0x700 #define EXYNOS_GPIO_EFLTCON_OFFSET 0x800 diff --git a/drivers/pinctrl/samsung/pinctrl-samsung.c b/drivers/pinctrl/samsung/pinctrl-samsung.c index 26d309d2516d..4837bceb767b 100644 --- a/drivers/pinctrl/samsung/pinctrl-samsung.c +++ b/drivers/pinctrl/samsung/pinctrl-samsung.c @@ -26,8 +26,6 @@ #include <linux/of_device.h> #include <linux/spinlock.h> -#include <dt-bindings/pinctrl/samsung.h> - #include "../core.h" #include "pinctrl-samsung.h" @@ -614,7 +612,7 @@ static int samsung_gpio_set_direction(struct gpio_chip *gc, data = readl(reg); data &= ~(mask << shift); if (!input) - data |= EXYNOS_PIN_FUNC_OUTPUT << shift; + data |= PIN_CON_FUNC_OUTPUT << shift; writel(data, reg); return 0; diff --git a/drivers/pinctrl/samsung/pinctrl-samsung.h b/drivers/pinctrl/samsung/pinctrl-samsung.h index fc6f5199c548..9af93e3d8d9f 100644 --- a/drivers/pinctrl/samsung/pinctrl-samsung.h +++ b/drivers/pinctrl/samsung/pinctrl-samsung.h @@ -53,6 +53,14 @@ enum pincfg_type { #define PINCFG_UNPACK_TYPE(cfg) ((cfg) & PINCFG_TYPE_MASK) #define PINCFG_UNPACK_VALUE(cfg) (((cfg) & PINCFG_VALUE_MASK) >> \ PINCFG_VALUE_SHIFT) +/* + * Values for the pin CON register, choosing pin function. + * The basic set (input and output) are same between: S3C24xx, S3C64xx, S5PV210, + * Exynos ARMv7, Exynos ARMv8, Tesla FSD. + */ +#define PIN_CON_FUNC_INPUT 0x0 +#define PIN_CON_FUNC_OUTPUT 0x1 + /** * enum eint_type - possible external interrupt types. * @EINT_TYPE_NONE: bank does not support external interrupts diff --git a/include/dt-bindings/pinctrl/samsung.h b/include/dt-bindings/pinctrl/samsung.h index 950970634dfe..23e2ffcf6ab8 100644 --- a/include/dt-bindings/pinctrl/samsung.h +++ b/include/dt-bindings/pinctrl/samsung.h @@ -10,6 +10,9 @@ #ifndef __DT_BINDINGS_PINCTRL_SAMSUNG_H__ #define __DT_BINDINGS_PINCTRL_SAMSUNG_H__ +#warning "These bindings were deprecated, because they do not match the actual bindings but register values." \ + "Instead include the header in the DTS source directory." + #define EXYNOS_PIN_PULL_NONE 0 #define EXYNOS_PIN_PULL_DOWN 1 #define EXYNOS_PIN_PULL_UP 3
For convenience (less code duplication, some meaning added to raw number), the pin controller pin configuration register values were defined in the bindings header. These are not some IDs or other abstraction layer but raw numbers used in the registers These constants do not fit the purpose of bindings. They do not provide any abstraction, any hardware and driver independent ID. With minor exceptions, the Linux drivers actually do not use the bindings header at all. All of the constants were moved already to headers local to DTS (residing in DTS directory), so remove any references to the bindings header and add a warning tha tit is deprecated. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> --- drivers/pinctrl/samsung/pinctrl-exynos.c | 6 ++---- drivers/pinctrl/samsung/pinctrl-exynos.h | 3 +++ drivers/pinctrl/samsung/pinctrl-samsung.c | 4 +--- drivers/pinctrl/samsung/pinctrl-samsung.h | 8 ++++++++ include/dt-bindings/pinctrl/samsung.h | 3 +++ 5 files changed, 17 insertions(+), 7 deletions(-)