| Message ID | 20210304085710.7128-6-noltari@gmail.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | pinctrl: add BCM63XX pincontrol support | expand |
On Thu, Mar 4, 2021 at 10:57 AM Álvaro Fernández Rojas <noltari@gmail.com> wrote: > > Add a pincontrol driver for BCM6328. BCM628 supports muxing 32 pins as > GPIOs, as LEDs for the integrated LED controller, or various other > functions. Its pincontrol mux registers also control other aspects, like > switching the second USB port between host and device mode. ... > +static inline unsigned int bcm6328_mux_off(unsigned int pin) > +{ > + static const unsigned int bcm6328_mux[] = { > + BCM6328_MUX_LO_REG, > + BCM6328_MUX_HI_REG, > + BCM6328_MUX_OTHER_REG When it's not terminator add a comma, otherwise remove a comma. Also, why is it inside a function? It's anyway global and constant. > + }; ... > + regmap_update_bits(pc->regs, bcm6328_mux_off(pin), > + 3UL << ((pin % 16) * 2), 3UL => #define BLABLA GENMASK(1, 0) > + mux << ((pin % 16) * 2)); ... > +static const struct of_device_id bcm6328_pinctrl_match[] = { > + { .compatible = "brcm,bcm6328-pinctrl", }, > + { }, No comma. > +}; Above comments to all your patches.
Hi Andy, > El 4 mar 2021, a las 11:49, Andy Shevchenko <andy.shevchenko@gmail.com> escribió: > > On Thu, Mar 4, 2021 at 10:57 AM Álvaro Fernández Rojas > <noltari@gmail.com> wrote: >> >> Add a pincontrol driver for BCM6328. BCM628 supports muxing 32 pins as >> GPIOs, as LEDs for the integrated LED controller, or various other >> functions. Its pincontrol mux registers also control other aspects, like >> switching the second USB port between host and device mode. > > ... > >> +static inline unsigned int bcm6328_mux_off(unsigned int pin) >> +{ >> + static const unsigned int bcm6328_mux[] = { >> + BCM6328_MUX_LO_REG, >> + BCM6328_MUX_HI_REG, > >> + BCM6328_MUX_OTHER_REG > > When it's not terminator add a comma, otherwise remove a comma. … so you want me to add a comma or not? > > Also, why is it inside a function? It's anyway global and constant. Because this is only used by this function and I’m used to doing this to comply with MISRA C 2004 at work :) > >> + }; > > ... > >> + regmap_update_bits(pc->regs, bcm6328_mux_off(pin), >> + 3UL << ((pin % 16) * 2), > > 3UL => #define BLABLA GENMASK(1, 0) Ok, I will add a define for this. > >> + mux << ((pin % 16) * 2)); > > ... > >> +static const struct of_device_id bcm6328_pinctrl_match[] = { >> + { .compatible = "brcm,bcm6328-pinctrl", }, >> + { }, > > No comma. Ok, I will remove the comma. > >> +}; > > Above comments to all your patches. Ok, I will try to address all of this comments in v5. > > -- > With Best Regards, > Andy Shevchenko
On Thu, Mar 4, 2021 at 1:13 PM Álvaro Fernández Rojas <noltari@gmail.com> wrote: > > El 4 mar 2021, a las 11:49, Andy Shevchenko <andy.shevchenko@gmail.com> escribió: > > On Thu, Mar 4, 2021 at 10:57 AM Álvaro Fernández Rojas > > <noltari@gmail.com> wrote: ... > >> + static const unsigned int bcm6328_mux[] = { > >> + BCM6328_MUX_LO_REG, > >> + BCM6328_MUX_HI_REG, > > > >> + BCM6328_MUX_OTHER_REG > > > > When it's not terminator add a comma, otherwise remove a comma. > … so you want me to add a comma or not? Hmm... you tell me! If this is a list which covers all possible cases _and_ the last one is the kinda maximum value (aka terminator), then comma is not needed, otherwise add it (to me feels like the latter should be done here). > > Also, why is it inside a function? It's anyway global and constant. > > Because this is only used by this function and I’m used to doing this to comply with MISRA C 2004 at work :) It makes code a bit harder to read. > >> + };
> El 4 mar 2021, a las 13:12, Andy Shevchenko <andy.shevchenko@gmail.com> escribió: > > On Thu, Mar 4, 2021 at 1:13 PM Álvaro Fernández Rojas <noltari@gmail.com> wrote: >>> El 4 mar 2021, a las 11:49, Andy Shevchenko <andy.shevchenko@gmail.com> escribió: >>> On Thu, Mar 4, 2021 at 10:57 AM Álvaro Fernández Rojas >>> <noltari@gmail.com> wrote: > > ... > >>>> + static const unsigned int bcm6328_mux[] = { >>>> + BCM6328_MUX_LO_REG, >>>> + BCM6328_MUX_HI_REG, >>> >>>> + BCM6328_MUX_OTHER_REG >>> >>> When it's not terminator add a comma, otherwise remove a comma. > >> … so you want me to add a comma or not? > > Hmm... you tell me! If this is a list which covers all possible cases > _and_ the last one is the kinda maximum value (aka terminator), then > comma is not needed, otherwise add it (to me feels like the latter > should be done here). Well… Then it shouldn’t be needed, since this is a list which covers all possible cases and the last one is a terminator. > >>> Also, why is it inside a function? It's anyway global and constant. >> >> Because this is only used by this function and I’m used to doing this to comply with MISRA C 2004 at work :) > > It makes code a bit harder to read. Ok, I will make it global in the next version. > >>>> + }; > > -- > With Best Regards, > Andy Shevchenko
On Thu, Mar 4, 2021 at 2:25 PM Álvaro Fernández Rojas <noltari@gmail.com> wrote: > > El 4 mar 2021, a las 13:12, Andy Shevchenko <andy.shevchenko@gmail.com> escribió: > > On Thu, Mar 4, 2021 at 1:13 PM Álvaro Fernández Rojas <noltari@gmail.com> wrote: > >>> El 4 mar 2021, a las 11:49, Andy Shevchenko <andy.shevchenko@gmail.com> escribió: > >>> On Thu, Mar 4, 2021 at 10:57 AM Álvaro Fernández Rojas > >>> <noltari@gmail.com> wrote: ... > >>>> + BCM6328_MUX_LO_REG, > >>>> + BCM6328_MUX_HI_REG, > >>> > >>>> + BCM6328_MUX_OTHER_REG > >>> > >>> When it's not terminator add a comma, otherwise remove a comma. > > > >> … so you want me to add a comma or not? > > > > Hmm... you tell me! If this is a list which covers all possible cases > > _and_ the last one is the kinda maximum value (aka terminator), then > > comma is not needed, otherwise add it (to me feels like the latter > > should be done here). > > Well… Then it shouldn’t be needed, since this is a list which covers all possible cases and the last one is a terminator. Honestly the name suggests otherwise. And looking into the code there is no guarantee you won't split that _OTHER_ area to something with new compatible hardware. Renaming to BCM6328_MUX_MAX_REG will clear that this is terminator, but it means its value shouldn't be used except as to understand the amount of supported registers of this enumerator.
Hi Andy, > El 4 mar 2021, a las 16:25, Andy Shevchenko <andy.shevchenko@gmail.com> escribió: > > On Thu, Mar 4, 2021 at 2:25 PM Álvaro Fernández Rojas <noltari@gmail.com> wrote: >>> El 4 mar 2021, a las 13:12, Andy Shevchenko <andy.shevchenko@gmail.com> escribió: >>> On Thu, Mar 4, 2021 at 1:13 PM Álvaro Fernández Rojas <noltari@gmail.com> wrote: >>>>> El 4 mar 2021, a las 11:49, Andy Shevchenko <andy.shevchenko@gmail.com> escribió: >>>>> On Thu, Mar 4, 2021 at 10:57 AM Álvaro Fernández Rojas >>>>> <noltari@gmail.com> wrote: > > ... > >>>>>> + BCM6328_MUX_LO_REG, >>>>>> + BCM6328_MUX_HI_REG, >>>>> >>>>>> + BCM6328_MUX_OTHER_REG >>>>> >>>>> When it's not terminator add a comma, otherwise remove a comma. >>> >>>> … so you want me to add a comma or not? >>> >>> Hmm... you tell me! If this is a list which covers all possible cases >>> _and_ the last one is the kinda maximum value (aka terminator), then >>> comma is not needed, otherwise add it (to me feels like the latter >>> should be done here). >> >> Well… Then it shouldn’t be needed, since this is a list which covers all possible cases and the last one is a terminator. > > Honestly the name suggests otherwise. And looking into the code there > is no guarantee you won't split that _OTHER_ area to something with > new compatible hardware. Every BCM63XX device has its own specific pin controllers. It seems that on every new SoC created by Broadcom they decided that the previous pin controller approach was a bad decision or something xD. Therefore I don’t think there will be such “new compatible hardware”... > Renaming to BCM6328_MUX_MAX_REG will clear that this is terminator, > but it means its value shouldn't be used except as to understand the > amount of supported registers of this enumerator. No, I don’t think this is a good idea. Please, take a look at: https://github.com/jameshilliard/gfiber-gflt100/blob/b292e8c271addbda62104bece90e3c8018714194/shared/opensource/include/bcm963xx/6328_map_part.h#L410-L441 As you can see, BCM6328_MUX_LO_REG and BCM6328_MUX_HI_REG are used for specific GPIOs, but BCM6328_MUX_OTHER_REG is used for pins which lack a direct GPIO assignment. > > > -- > With Best Regards, > Andy Shevchenko Best regards, Álvaro.
On Thu, Mar 4, 2021 at 5:33 PM Álvaro Fernández Rojas <noltari@gmail.com> wrote: > > El 4 mar 2021, a las 16:25, Andy Shevchenko <andy.shevchenko@gmail.com> escribió: > > On Thu, Mar 4, 2021 at 2:25 PM Álvaro Fernández Rojas <noltari@gmail.com> wrote: > >>> El 4 mar 2021, a las 13:12, Andy Shevchenko <andy.shevchenko@gmail.com> escribió: > >>> On Thu, Mar 4, 2021 at 1:13 PM Álvaro Fernández Rojas <noltari@gmail.com> wrote: > >>>>> El 4 mar 2021, a las 11:49, Andy Shevchenko <andy.shevchenko@gmail.com> escribió: > >>>>> On Thu, Mar 4, 2021 at 10:57 AM Álvaro Fernández Rojas > >>>>> <noltari@gmail.com> wrote: > > > > ... > > > >>>>>> + BCM6328_MUX_LO_REG, > >>>>>> + BCM6328_MUX_HI_REG, > >>>>> > >>>>>> + BCM6328_MUX_OTHER_REG > >>>>> > >>>>> When it's not terminator add a comma, otherwise remove a comma. > >>> > >>>> … so you want me to add a comma or not? > >>> > >>> Hmm... you tell me! If this is a list which covers all possible cases > >>> _and_ the last one is the kinda maximum value (aka terminator), then > >>> comma is not needed, otherwise add it (to me feels like the latter > >>> should be done here). > >> > >> Well… Then it shouldn’t be needed, since this is a list which covers all possible cases and the last one is a terminator. > > > > Honestly the name suggests otherwise. And looking into the code there > > is no guarantee you won't split that _OTHER_ area to something with > > new compatible hardware. > > Every BCM63XX device has its own specific pin controllers. > It seems that on every new SoC created by Broadcom they decided that the previous pin controller approach was a bad decision or something xD. > Therefore I don’t think there will be such “new compatible hardware”... > > > Renaming to BCM6328_MUX_MAX_REG will clear that this is terminator, > > but it means its value shouldn't be used except as to understand the > > amount of supported registers of this enumerator. > > No, I don’t think this is a good idea. > Please, take a look at: > https://github.com/jameshilliard/gfiber-gflt100/blob/b292e8c271addbda62104bece90e3c8018714194/shared/opensource/include/bcm963xx/6328_map_part.h#L410-L441 > As you can see, BCM6328_MUX_LO_REG and BCM6328_MUX_HI_REG are used for specific GPIOs, but BCM6328_MUX_OTHER_REG is used for pins which lack a direct GPIO assignment. Understood. Thanks for elaboration. Go ahead with current approach, thanks!
diff --git a/drivers/pinctrl/bcm/Kconfig b/drivers/pinctrl/bcm/Kconfig index 882f19bdc243..d35e5d3fe26f 100644 --- a/drivers/pinctrl/bcm/Kconfig +++ b/drivers/pinctrl/bcm/Kconfig @@ -36,6 +36,14 @@ config PINCTRL_BCM63XX select PINCONF select PINMUX +config PINCTRL_BCM6328 + bool "Broadcom BCM6328 GPIO driver" + depends on (BMIPS_GENERIC || COMPILE_TEST) + select PINCTRL_BCM63XX + default BMIPS_GENERIC + help + Say Y here to enable the Broadcom BCM6328 GPIO driver. + config PINCTRL_IPROC_GPIO bool "Broadcom iProc GPIO (with PINCONF) driver" depends on OF_GPIO && (ARCH_BCM_IPROC || COMPILE_TEST) diff --git a/drivers/pinctrl/bcm/Makefile b/drivers/pinctrl/bcm/Makefile index 0e3cf9b15c65..57e5434a6db6 100644 --- a/drivers/pinctrl/bcm/Makefile +++ b/drivers/pinctrl/bcm/Makefile @@ -4,6 +4,7 @@ obj-$(CONFIG_PINCTRL_BCM281XX) += pinctrl-bcm281xx.o obj-$(CONFIG_PINCTRL_BCM2835) += pinctrl-bcm2835.o obj-$(CONFIG_PINCTRL_BCM63XX) += pinctrl-bcm63xx.o +obj-$(CONFIG_PINCTRL_BCM6328) += pinctrl-bcm6328.o obj-$(CONFIG_PINCTRL_IPROC_GPIO) += pinctrl-iproc-gpio.o obj-$(CONFIG_PINCTRL_CYGNUS_MUX) += pinctrl-cygnus-mux.o obj-$(CONFIG_PINCTRL_NS) += pinctrl-ns.o diff --git a/drivers/pinctrl/bcm/pinctrl-bcm6328.c b/drivers/pinctrl/bcm/pinctrl-bcm6328.c new file mode 100644 index 000000000000..b91238785290 --- /dev/null +++ b/drivers/pinctrl/bcm/pinctrl-bcm6328.c @@ -0,0 +1,403 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Driver for BCM6328 GPIO unit (pinctrl + GPIO) + * + * Copyright (C) 2021 Álvaro Fernández Rojas <noltari@gmail.com> + * Copyright (C) 2016 Jonas Gorski <jonas.gorski@gmail.com> + */ + +#include <linux/bits.h> +#include <linux/gpio/driver.h> +#include <linux/kernel.h> +#include <linux/of.h> +#include <linux/pinctrl/pinmux.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> + +#include "../pinctrl-utils.h" + +#include "pinctrl-bcm63xx.h" + +#define BCM6328_NUM_GPIOS 32 + +#define BCM6328_MODE_REG 0x18 +#define BCM6328_MUX_HI_REG 0x1c +#define BCM6328_MUX_LO_REG 0x20 +#define BCM6328_MUX_OTHER_REG 0x24 + +struct bcm6328_pingroup { + const char *name; + const unsigned * const pins; + const unsigned num_pins; +}; + +struct bcm6328_function { + const char *name; + const char * const *groups; + const unsigned num_groups; + + unsigned mode_val:1; + unsigned mux_val:2; +}; + +static const struct pinctrl_pin_desc bcm6328_pins[] = { + PINCTRL_PIN(0, "gpio0"), + PINCTRL_PIN(1, "gpio1"), + PINCTRL_PIN(2, "gpio2"), + PINCTRL_PIN(3, "gpio3"), + PINCTRL_PIN(4, "gpio4"), + PINCTRL_PIN(5, "gpio5"), + PINCTRL_PIN(6, "gpio6"), + PINCTRL_PIN(7, "gpio7"), + PINCTRL_PIN(8, "gpio8"), + PINCTRL_PIN(9, "gpio9"), + PINCTRL_PIN(10, "gpio10"), + PINCTRL_PIN(11, "gpio11"), + PINCTRL_PIN(12, "gpio12"), + PINCTRL_PIN(13, "gpio13"), + PINCTRL_PIN(14, "gpio14"), + PINCTRL_PIN(15, "gpio15"), + PINCTRL_PIN(16, "gpio16"), + PINCTRL_PIN(17, "gpio17"), + PINCTRL_PIN(18, "gpio18"), + PINCTRL_PIN(19, "gpio19"), + PINCTRL_PIN(20, "gpio20"), + PINCTRL_PIN(21, "gpio21"), + PINCTRL_PIN(22, "gpio22"), + PINCTRL_PIN(23, "gpio23"), + PINCTRL_PIN(24, "gpio24"), + PINCTRL_PIN(25, "gpio25"), + PINCTRL_PIN(26, "gpio26"), + PINCTRL_PIN(27, "gpio27"), + PINCTRL_PIN(28, "gpio28"), + PINCTRL_PIN(29, "gpio29"), + PINCTRL_PIN(30, "gpio30"), + PINCTRL_PIN(31, "gpio31"), + + /* + * No idea where they really are; so let's put them according + * to their mux offsets. + */ + PINCTRL_PIN(36, "hsspi_cs1"), + PINCTRL_PIN(38, "usb_p2"), +}; + +static unsigned gpio0_pins[] = { 0 }; +static unsigned gpio1_pins[] = { 1 }; +static unsigned gpio2_pins[] = { 2 }; +static unsigned gpio3_pins[] = { 3 }; +static unsigned gpio4_pins[] = { 4 }; +static unsigned gpio5_pins[] = { 5 }; +static unsigned gpio6_pins[] = { 6 }; +static unsigned gpio7_pins[] = { 7 }; +static unsigned gpio8_pins[] = { 8 }; +static unsigned gpio9_pins[] = { 9 }; +static unsigned gpio10_pins[] = { 10 }; +static unsigned gpio11_pins[] = { 11 }; +static unsigned gpio12_pins[] = { 12 }; +static unsigned gpio13_pins[] = { 13 }; +static unsigned gpio14_pins[] = { 14 }; +static unsigned gpio15_pins[] = { 15 }; +static unsigned gpio16_pins[] = { 16 }; +static unsigned gpio17_pins[] = { 17 }; +static unsigned gpio18_pins[] = { 18 }; +static unsigned gpio19_pins[] = { 19 }; +static unsigned gpio20_pins[] = { 20 }; +static unsigned gpio21_pins[] = { 21 }; +static unsigned gpio22_pins[] = { 22 }; +static unsigned gpio23_pins[] = { 23 }; +static unsigned gpio24_pins[] = { 24 }; +static unsigned gpio25_pins[] = { 25 }; +static unsigned gpio26_pins[] = { 26 }; +static unsigned gpio27_pins[] = { 27 }; +static unsigned gpio28_pins[] = { 28 }; +static unsigned gpio29_pins[] = { 29 }; +static unsigned gpio30_pins[] = { 30 }; +static unsigned gpio31_pins[] = { 31 }; + +static unsigned hsspi_cs1_pins[] = { 36 }; +static unsigned usb_port1_pins[] = { 38 }; + +#define BCM6328_GROUP(n) \ + { \ + .name = #n, \ + .pins = n##_pins, \ + .num_pins = ARRAY_SIZE(n##_pins), \ + } + +static struct bcm6328_pingroup bcm6328_groups[] = { + BCM6328_GROUP(gpio0), + BCM6328_GROUP(gpio1), + BCM6328_GROUP(gpio2), + BCM6328_GROUP(gpio3), + BCM6328_GROUP(gpio4), + BCM6328_GROUP(gpio5), + BCM6328_GROUP(gpio6), + BCM6328_GROUP(gpio7), + BCM6328_GROUP(gpio8), + BCM6328_GROUP(gpio9), + BCM6328_GROUP(gpio10), + BCM6328_GROUP(gpio11), + BCM6328_GROUP(gpio12), + BCM6328_GROUP(gpio13), + BCM6328_GROUP(gpio14), + BCM6328_GROUP(gpio15), + BCM6328_GROUP(gpio16), + BCM6328_GROUP(gpio17), + BCM6328_GROUP(gpio18), + BCM6328_GROUP(gpio19), + BCM6328_GROUP(gpio20), + BCM6328_GROUP(gpio21), + BCM6328_GROUP(gpio22), + BCM6328_GROUP(gpio23), + BCM6328_GROUP(gpio24), + BCM6328_GROUP(gpio25), + BCM6328_GROUP(gpio26), + BCM6328_GROUP(gpio27), + BCM6328_GROUP(gpio28), + BCM6328_GROUP(gpio29), + BCM6328_GROUP(gpio30), + BCM6328_GROUP(gpio31), + + BCM6328_GROUP(hsspi_cs1), + BCM6328_GROUP(usb_port1), +}; + +/* GPIO_MODE */ +static const char * const led_groups[] = { + "gpio0", + "gpio1", + "gpio2", + "gpio3", + "gpio4", + "gpio5", + "gpio6", + "gpio7", + "gpio8", + "gpio9", + "gpio10", + "gpio11", + "gpio12", + "gpio13", + "gpio14", + "gpio15", + "gpio16", + "gpio17", + "gpio18", + "gpio19", + "gpio20", + "gpio21", + "gpio22", + "gpio23", +}; + +/* PINMUX_SEL */ +static const char * const serial_led_data_groups[] = { + "gpio6", +}; + +static const char * const serial_led_clk_groups[] = { + "gpio7", +}; + +static const char * const inet_act_led_groups[] = { + "gpio11", +}; + +static const char * const pcie_clkreq_groups[] = { + "gpio16", +}; + +static const char * const ephy0_act_led_groups[] = { + "gpio25", +}; + +static const char * const ephy1_act_led_groups[] = { + "gpio26", +}; + +static const char * const ephy2_act_led_groups[] = { + "gpio27", +}; + +static const char * const ephy3_act_led_groups[] = { + "gpio28", +}; + +static const char * const hsspi_cs1_groups[] = { + "hsspi_cs1" +}; + +static const char * const usb_host_port_groups[] = { + "usb_port1", +}; + +static const char * const usb_device_port_groups[] = { + "usb_port1", +}; + +#define BCM6328_MODE_FUN(n) \ + { \ + .name = #n, \ + .groups = n##_groups, \ + .num_groups = ARRAY_SIZE(n##_groups), \ + .mode_val = 1, \ + } + +#define BCM6328_MUX_FUN(n, mux) \ + { \ + .name = #n, \ + .groups = n##_groups, \ + .num_groups = ARRAY_SIZE(n##_groups), \ + .mux_val = mux, \ + } + +static const struct bcm6328_function bcm6328_funcs[] = { + BCM6328_MODE_FUN(led), + BCM6328_MUX_FUN(serial_led_data, 2), + BCM6328_MUX_FUN(serial_led_clk, 2), + BCM6328_MUX_FUN(inet_act_led, 1), + BCM6328_MUX_FUN(pcie_clkreq, 2), + BCM6328_MUX_FUN(ephy0_act_led, 1), + BCM6328_MUX_FUN(ephy1_act_led, 1), + BCM6328_MUX_FUN(ephy2_act_led, 1), + BCM6328_MUX_FUN(ephy3_act_led, 1), + BCM6328_MUX_FUN(hsspi_cs1, 2), + BCM6328_MUX_FUN(usb_host_port, 1), + BCM6328_MUX_FUN(usb_device_port, 2), +}; + +static inline unsigned int bcm6328_mux_off(unsigned int pin) +{ + static const unsigned int bcm6328_mux[] = { + BCM6328_MUX_LO_REG, + BCM6328_MUX_HI_REG, + BCM6328_MUX_OTHER_REG + }; + + return bcm6328_mux[pin / 16]; +} + +static int bcm6328_pinctrl_get_group_count(struct pinctrl_dev *pctldev) +{ + return ARRAY_SIZE(bcm6328_groups); +} + +static const char *bcm6328_pinctrl_get_group_name(struct pinctrl_dev *pctldev, + unsigned group) +{ + return bcm6328_groups[group].name; +} + +static int bcm6328_pinctrl_get_group_pins(struct pinctrl_dev *pctldev, + unsigned group, const unsigned **pins, + unsigned *num_pins) +{ + *pins = bcm6328_groups[group].pins; + *num_pins = bcm6328_groups[group].num_pins; + + return 0; +} + +static int bcm6328_pinctrl_get_func_count(struct pinctrl_dev *pctldev) +{ + return ARRAY_SIZE(bcm6328_funcs); +} + +static const char *bcm6328_pinctrl_get_func_name(struct pinctrl_dev *pctldev, + unsigned selector) +{ + return bcm6328_funcs[selector].name; +} + +static int bcm6328_pinctrl_get_groups(struct pinctrl_dev *pctldev, + unsigned selector, + const char * const **groups, + unsigned * const num_groups) +{ + *groups = bcm6328_funcs[selector].groups; + *num_groups = bcm6328_funcs[selector].num_groups; + + return 0; +} + +static void bcm6328_rmw_mux(struct bcm63xx_pinctrl *pc, unsigned pin, + unsigned int mode, unsigned int mux) +{ + if (pin < BCM6328_NUM_GPIOS) + regmap_update_bits(pc->regs, BCM6328_MODE_REG, BIT(pin), + mode ? BIT(pin) : 0); + + regmap_update_bits(pc->regs, bcm6328_mux_off(pin), + 3UL << ((pin % 16) * 2), + mux << ((pin % 16) * 2)); +} + +static int bcm6328_pinctrl_set_mux(struct pinctrl_dev *pctldev, + unsigned selector, unsigned group) +{ + struct bcm63xx_pinctrl *pc = pinctrl_dev_get_drvdata(pctldev); + const struct bcm6328_pingroup *pg = &bcm6328_groups[group]; + const struct bcm6328_function *f = &bcm6328_funcs[selector]; + + bcm6328_rmw_mux(pc, pg->pins[0], f->mode_val, f->mux_val); + + return 0; +} + +static int bcm6328_gpio_request_enable(struct pinctrl_dev *pctldev, + struct pinctrl_gpio_range *range, + unsigned offset) +{ + struct bcm63xx_pinctrl *pc = pinctrl_dev_get_drvdata(pctldev); + + /* disable all functions using this pin */ + bcm6328_rmw_mux(pc, offset, 0, 0); + + return 0; +} + +static struct pinctrl_ops bcm6328_pctl_ops = { + .dt_free_map = pinctrl_utils_free_map, + .dt_node_to_map = pinconf_generic_dt_node_to_map_pin, + .get_group_name = bcm6328_pinctrl_get_group_name, + .get_group_pins = bcm6328_pinctrl_get_group_pins, + .get_groups_count = bcm6328_pinctrl_get_group_count, +}; + +static struct pinmux_ops bcm6328_pmx_ops = { + .get_function_groups = bcm6328_pinctrl_get_groups, + .get_function_name = bcm6328_pinctrl_get_func_name, + .get_functions_count = bcm6328_pinctrl_get_func_count, + .gpio_request_enable = bcm6328_gpio_request_enable, + .set_mux = bcm6328_pinctrl_set_mux, + .strict = true, +}; + +static const struct bcm63xx_pinctrl_soc bcm6328_soc = { + .ngpios = BCM6328_NUM_GPIOS, + .npins = ARRAY_SIZE(bcm6328_pins), + .pctl_ops = &bcm6328_pctl_ops, + .pins = bcm6328_pins, + .pmx_ops = &bcm6328_pmx_ops, +}; + +static int bcm6328_pinctrl_probe(struct platform_device *pdev) +{ + return bcm63xx_pinctrl_probe(pdev, &bcm6328_soc, NULL); +} + +static const struct of_device_id bcm6328_pinctrl_match[] = { + { .compatible = "brcm,bcm6328-pinctrl", }, + { }, +}; + +static struct platform_driver bcm6328_pinctrl_driver = { + .probe = bcm6328_pinctrl_probe, + .driver = { + .name = "bcm6328-pinctrl", + .of_match_table = bcm6328_pinctrl_match, + }, +}; + +builtin_platform_driver(bcm6328_pinctrl_driver);