diff options
| -rw-r--r-- | drivers/pinctrl/meson/Kconfig | 7 | ||||
| -rw-r--r-- | drivers/pinctrl/meson/Makefile | 1 | ||||
| -rw-r--r-- | drivers/pinctrl/meson/pinctrl-meson-gxbb.c | 3 | ||||
| -rw-r--r-- | drivers/pinctrl/meson/pinctrl-meson-gxl.c | 3 | ||||
| -rw-r--r-- | drivers/pinctrl/meson/pinctrl-meson.c | 96 | ||||
| -rw-r--r-- | drivers/pinctrl/meson/pinctrl-meson.h | 31 | ||||
| -rw-r--r-- | drivers/pinctrl/meson/pinctrl-meson8-pmx.c | 108 | ||||
| -rw-r--r-- | drivers/pinctrl/meson/pinctrl-meson8-pmx.h | 48 | ||||
| -rw-r--r-- | drivers/pinctrl/meson/pinctrl-meson8.c | 3 | ||||
| -rw-r--r-- | drivers/pinctrl/meson/pinctrl-meson8b.c | 3 |
10 files changed, 194 insertions, 109 deletions
diff --git a/drivers/pinctrl/meson/Kconfig b/drivers/pinctrl/meson/Kconfig index 2795a31eb04a..1a51778759ea 100644 --- a/drivers/pinctrl/meson/Kconfig +++ b/drivers/pinctrl/meson/Kconfig @@ -14,21 +14,28 @@ if PINCTRL_MESON config PINCTRL_MESON8 bool "Meson 8 SoC pinctrl driver" depends on ARM + select PINCTRL_MESON8_PMX default y config PINCTRL_MESON8B bool "Meson 8b SoC pinctrl driver" depends on ARM + select PINCTRL_MESON8_PMX default y config PINCTRL_MESON_GXBB bool "Meson gxbb SoC pinctrl driver" depends on ARM64 + select PINCTRL_MESON8_PMX default y config PINCTRL_MESON_GXL bool "Meson gxl SoC pinctrl driver" depends on ARM64 + select PINCTRL_MESON8_PMX default y +config PINCTRL_MESON8_PMX + bool + endif diff --git a/drivers/pinctrl/meson/Makefile b/drivers/pinctrl/meson/Makefile index dc3b73f8039a..cbd47bb74549 100644 --- a/drivers/pinctrl/meson/Makefile +++ b/drivers/pinctrl/meson/Makefile @@ -1,4 +1,5 @@ obj-$(CONFIG_PINCTRL_MESON) += pinctrl-meson.o +obj-$(CONFIG_PINCTRL_MESON8_PMX) += pinctrl-meson8-pmx.o obj-$(CONFIG_PINCTRL_MESON8) += pinctrl-meson8.o obj-$(CONFIG_PINCTRL_MESON8B) += pinctrl-meson8b.o obj-$(CONFIG_PINCTRL_MESON_GXBB) += pinctrl-meson-gxbb.o diff --git a/drivers/pinctrl/meson/pinctrl-meson-gxbb.c b/drivers/pinctrl/meson/pinctrl-meson-gxbb.c index a87bdb17414b..9079020259c5 100644 --- a/drivers/pinctrl/meson/pinctrl-meson-gxbb.c +++ b/drivers/pinctrl/meson/pinctrl-meson-gxbb.c @@ -14,6 +14,7 @@ #include <dt-bindings/gpio/meson-gxbb-gpio.h> #include "pinctrl-meson.h" +#include "pinctrl-meson8-pmx.h" static const struct pinctrl_pin_desc meson_gxbb_periphs_pins[] = { MESON_PIN(GPIOZ_0), @@ -834,6 +835,7 @@ static struct meson_pinctrl_data meson_gxbb_periphs_pinctrl_data = { .num_groups = ARRAY_SIZE(meson_gxbb_periphs_groups), .num_funcs = ARRAY_SIZE(meson_gxbb_periphs_functions), .num_banks = ARRAY_SIZE(meson_gxbb_periphs_banks), + .pmx_ops = &meson8_pmx_ops, }; static struct meson_pinctrl_data meson_gxbb_aobus_pinctrl_data = { @@ -846,6 +848,7 @@ static struct meson_pinctrl_data meson_gxbb_aobus_pinctrl_data = { .num_groups = ARRAY_SIZE(meson_gxbb_aobus_groups), .num_funcs = ARRAY_SIZE(meson_gxbb_aobus_functions), .num_banks = ARRAY_SIZE(meson_gxbb_aobus_banks), + .pmx_ops = &meson8_pmx_ops, }; static const struct of_device_id meson_gxbb_pinctrl_dt_match[] = { diff --git a/drivers/pinctrl/meson/pinctrl-meson-gxl.c b/drivers/pinctrl/meson/pinctrl-meson-gxl.c index 088ac94f76b0..b3786cde963d 100644 --- a/drivers/pinctrl/meson/pinctrl-meson-gxl.c +++ b/drivers/pinctrl/meson/pinctrl-meson-gxl.c @@ -14,6 +14,7 @@ #include <dt-bindings/gpio/meson-gxl-gpio.h> #include "pinctrl-meson.h" +#include "pinctrl-meson8-pmx.h" static const struct pinctrl_pin_desc meson_gxl_periphs_pins[] = { MESON_PIN(GPIOZ_0), @@ -819,6 +820,7 @@ static struct meson_pinctrl_data meson_gxl_periphs_pinctrl_data = { .num_groups = ARRAY_SIZE(meson_gxl_periphs_groups), .num_funcs = ARRAY_SIZE(meson_gxl_periphs_functions), .num_banks = ARRAY_SIZE(meson_gxl_periphs_banks), + .pmx_ops = &meson8_pmx_ops, }; static struct meson_pinctrl_data meson_gxl_aobus_pinctrl_data = { @@ -831,6 +833,7 @@ static struct meson_pinctrl_data meson_gxl_aobus_pinctrl_data = { .num_groups = ARRAY_SIZE(meson_gxl_aobus_groups), .num_funcs = ARRAY_SIZE(meson_gxl_aobus_functions), .num_banks = ARRAY_SIZE(meson_gxl_aobus_banks), + .pmx_ops = &meson8_pmx_ops, }; static const struct of_device_id meson_gxl_pinctrl_dt_match[] = { diff --git a/drivers/pinctrl/meson/pinctrl-meson.c b/drivers/pinctrl/meson/pinctrl-meson.c index 525e8b17d471..29a458da78db 100644 --- a/drivers/pinctrl/meson/pinctrl-meson.c +++ b/drivers/pinctrl/meson/pinctrl-meson.c @@ -31,10 +31,6 @@ * In some cases the register ranges for pull enable and pull * direction are the same and thus there are only 3 register ranges. * - * Every pinmux group can be enabled by a specific bit in the first - * register range; when all groups for a given pin are disabled the - * pin acts as a GPIO. - * * For the pull and GPIO configuration every bank uses a contiguous * set of bits in the register sets described above; the same register * can be shared by more banks with different offsets. @@ -148,94 +144,24 @@ static const struct pinctrl_ops meson_pctrl_ops = { .pin_dbg_show = meson_pin_dbg_show, }; -/** - * meson_pmx_disable_other_groups() - disable other groups using a given pin - * - * @pc: meson pin controller device - * @pin: number of the pin - * @sel_group: index of the selected group, or -1 if none - * - * The function disables all pinmux groups using a pin except the - * selected one. If @sel_group is -1 all groups are disabled, leaving - * the pin in GPIO mode. - */ -static void meson_pmx_disable_other_groups(struct meson_pinctrl *pc, - unsigned int pin, int sel_group) -{ - struct meson_pmx_group *group; - int i, j; - - for (i = 0; i < pc->data->num_groups; i++) { - group = &pc->data->groups[i]; - if (group->is_gpio || i == sel_group) - continue; - - for (j = 0; j < group->num_pins; j++) { - if (group->pins[j] == pin) { - /* We have found a group using the pin */ - regmap_update_bits(pc->reg_mux, - group->reg * 4, - BIT(group->bit), 0); - } - } - } -} - -static int meson_pmx_set_mux(struct pinctrl_dev *pcdev, unsigned func_num, - unsigned group_num) -{ - struct meson_pinctrl *pc = pinctrl_dev_get_drvdata(pcdev); - struct meson_pmx_func *func = &pc->data->funcs[func_num]; - struct meson_pmx_group *group = &pc->data->groups[group_num]; - int i, ret = 0; - - dev_dbg(pc->dev, "enable function %s, group %s\n", func->name, - group->name); - - /* - * Disable groups using the same pin. - * The selected group is not disabled to avoid glitches. - */ - for (i = 0; i < group->num_pins; i++) - meson_pmx_disable_other_groups(pc, group->pins[i], group_num); - - /* Function 0 (GPIO) doesn't need any additional setting */ - if (func_num) - ret = regmap_update_bits(pc->reg_mux, group->reg * 4, - BIT(group->bit), BIT(group->bit)); - - return ret; -} - -static int meson_pmx_request_gpio(struct pinctrl_dev *pcdev, - struct pinctrl_gpio_range *range, - unsigned offset) -{ - struct meson_pinctrl *pc = pinctrl_dev_get_drvdata(pcdev); - - meson_pmx_disable_other_groups(pc, offset, -1); - - return 0; -} - -static int meson_pmx_get_funcs_count(struct pinctrl_dev *pcdev) +int meson_pmx_get_funcs_count(struct pinctrl_dev *pcdev) { struct meson_pinctrl *pc = pinctrl_dev_get_drvdata(pcdev); return pc->data->num_funcs; } -static const char *meson_pmx_get_func_name(struct pinctrl_dev *pcdev, - unsigned selector) +const char *meson_pmx_get_func_name(struct pinctrl_dev *pcdev, + unsigned selector) { struct meson_pinctrl *pc = pinctrl_dev_get_drvdata(pcdev); return pc->data->funcs[selector].name; } -static int meson_pmx_get_groups(struct pinctrl_dev *pcdev, unsigned selector, - const char * const **groups, - unsigned * const num_groups) +int meson_pmx_get_groups(struct pinctrl_dev *pcdev, unsigned selector, + const char * const **groups, + unsigned * const num_groups) { struct meson_pinctrl *pc = pinctrl_dev_get_drvdata(pcdev); @@ -245,14 +171,6 @@ static int meson_pmx_get_groups(struct pinctrl_dev *pcdev, unsigned selector, return 0; } -static const struct pinmux_ops meson_pmx_ops = { - .set_mux = meson_pmx_set_mux, - .get_functions_count = meson_pmx_get_funcs_count, - .get_function_name = meson_pmx_get_func_name, - .get_function_groups = meson_pmx_get_groups, - .gpio_request_enable = meson_pmx_request_gpio, -}; - static int meson_pinconf_set(struct pinctrl_dev *pcdev, unsigned int pin, unsigned long *configs, unsigned num_configs) { @@ -609,7 +527,7 @@ int meson_pinctrl_probe(struct platform_device *pdev) pc->desc.name = "pinctrl-meson"; pc->desc.owner = THIS_MODULE; pc->desc.pctlops = &meson_pctrl_ops; - pc->desc.pmxops = &meson_pmx_ops; + pc->desc.pmxops = pc->data->pmx_ops; pc->desc.confops = &meson_pinconf_ops; pc->desc.pins = pc->data->pins; pc->desc.npins = pc->data->num_pins; diff --git a/drivers/pinctrl/meson/pinctrl-meson.h b/drivers/pinctrl/meson/pinctrl-meson.h index 284157d43612..183b6e471635 100644 --- a/drivers/pinctrl/meson/pinctrl-meson.h +++ b/drivers/pinctrl/meson/pinctrl-meson.h @@ -32,9 +32,7 @@ struct meson_pmx_group { const char *name; const unsigned int *pins; unsigned int num_pins; - bool is_gpio; - unsigned int reg; - unsigned int bit; + const void *data; }; /** @@ -109,6 +107,7 @@ struct meson_pinctrl_data { unsigned int num_funcs; struct meson_bank *banks; unsigned int num_banks; + const struct pinmux_ops *pmx_ops; }; struct meson_pinctrl { @@ -124,23 +123,6 @@ struct meson_pinctrl { struct device_node *of_node; }; -#define GROUP(grp, r, b) \ - { \ - .name = #grp, \ - .pins = grp ## _pins, \ - .num_pins = ARRAY_SIZE(grp ## _pins), \ - .reg = r, \ - .bit = b, \ - } - -#define GPIO_GROUP(gpio) \ - { \ - .name = #gpio, \ - .pins = (const unsigned int[]){ gpio }, \ - .num_pins = 1, \ - .is_gpio = true, \ - } - #define FUNCTION(fn) \ { \ .name = #fn, \ @@ -166,5 +148,14 @@ struct meson_pinctrl { #define MESON_PIN(x) PINCTRL_PIN(x, #x) +/* Common pmx functions */ +int meson_pmx_get_funcs_count(struct pinctrl_dev *pcdev); +const char *meson_pmx_get_func_name(struct pinctrl_dev *pcdev, + unsigned selector); +int meson_pmx_get_groups(struct pinctrl_dev *pcdev, + unsigned selector, + const char * const **groups, + unsigned * const num_groups); + /* Common probe function */ int meson_pinctrl_probe(struct platform_device *pdev); diff --git a/drivers/pinctrl/meson/pinctrl-meson8-pmx.c b/drivers/pinctrl/meson/pinctrl-meson8-pmx.c new file mode 100644 index 000000000000..b93b058c8a07 --- /dev/null +++ b/drivers/pinctrl/meson/pinctrl-meson8-pmx.c @@ -0,0 +1,108 @@ +/* + * First generation of pinmux driver for Amlogic Meson SoCs + * + * Copyright (C) 2014 Beniamino Galvani <b.galvani@gmail.com> + * Copyright (C) 2017 Jerome Brunet <jbrunet@baylibre.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +/* For this first generation of pinctrl driver every pinmux group can be + * enabled by a specific bit in the first register range. When all groups for + * a given pin are disabled the pin acts as a GPIO. + */ +#include <linux/device.h> +#include <linux/regmap.h> +#include <linux/pinctrl/pinctrl.h> +#include <linux/pinctrl/pinmux.h> + +#include "pinctrl-meson.h" +#include "pinctrl-meson8-pmx.h" + +/** + * meson8_pmx_disable_other_groups() - disable other groups using a given pin + * + * @pc: meson pin controller device + * @pin: number of the pin + * @sel_group: index of the selected group, or -1 if none + * + * The function disables all pinmux groups using a pin except the + * selected one. If @sel_group is -1 all groups are disabled, leaving + * the pin in GPIO mode. + */ +static void meson8_pmx_disable_other_groups(struct meson_pinctrl *pc, + unsigned int pin, int sel_group) +{ + struct meson_pmx_group *group; + struct meson8_pmx_data *pmx_data; + int i, j; + + for (i = 0; i < pc->data->num_groups; i++) { + group = &pc->data->groups[i]; + pmx_data = (struct meson8_pmx_data *)group->data; + if (pmx_data->is_gpio || i == sel_group) + continue; + + for (j = 0; j < group->num_pins; j++) { + if (group->pins[j] == pin) { + /* We have found a group using the pin */ + regmap_update_bits(pc->reg_mux, + pmx_data->reg * 4, + BIT(pmx_data->bit), 0); + } + } + } +} + +static int meson8_pmx_set_mux(struct pinctrl_dev *pcdev, unsigned func_num, + unsigned group_num) +{ + struct meson_pinctrl *pc = pinctrl_dev_get_drvdata(pcdev); + struct meson_pmx_func *func = &pc->data->funcs[func_num]; + struct meson_pmx_group *group = &pc->data->groups[group_num]; + struct meson8_pmx_data *pmx_data = + (struct meson8_pmx_data *)group->data; + int i, ret = 0; + + dev_dbg(pc->dev, "enable function %s, group %s\n", func->name, + group->name); + + /* + * Disable groups using the same pin. + * The selected group is not disabled to avoid glitches. + */ + for (i = 0; i < group->num_pins; i++) + meson8_pmx_disable_other_groups(pc, group->pins[i], group_num); + + /* Function 0 (GPIO) doesn't need any additional setting */ + if (func_num) + ret = regmap_update_bits(pc->reg_mux, pmx_data->reg * 4, + BIT(pmx_data->bit), + BIT(pmx_data->bit)); + + return ret; +} + +static int meson8_pmx_request_gpio(struct pinctrl_dev *pcdev, + struct pinctrl_gpio_range *range, + unsigned offset) +{ + struct meson_pinctrl *pc = pinctrl_dev_get_drvdata(pcdev); + + meson8_pmx_disable_other_groups(pc, offset, -1); + + return 0; +} + +const struct pinmux_ops meson8_pmx_ops = { + .set_mux = meson8_pmx_set_mux, + .get_functions_count = meson_pmx_get_funcs_count, + .get_function_name = meson_pmx_get_func_name, + .get_function_groups = meson_pmx_get_groups, + .gpio_request_enable = meson8_pmx_request_gpio, +}; diff --git a/drivers/pinctrl/meson/pinctrl-meson8-pmx.h b/drivers/pinctrl/meson/pinctrl-meson8-pmx.h new file mode 100644 index 000000000000..47293c28f913 --- /dev/null +++ b/drivers/pinctrl/meson/pinctrl-meson8-pmx.h @@ -0,0 +1,48 @@ +/* + * First generation of pinmux driver for Amlogic Meson SoCs + * + * Copyright (C) 2014 Beniamino Galvani <b.galvani@gmail.com> + * Copyright (C) 2017 Jerome Brunet <jbrunet@baylibre.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +struct meson8_pmx_data { + bool is_gpio; + unsigned int reg; + unsigned int bit; +}; + +#define PMX_DATA(r, b, g) \ + { \ + .reg = r, \ + .bit = b, \ + .is_gpio = g, \ + } + +#define GROUP(grp, r, b) \ + { \ + .name = #grp, \ + .pins = grp ## _pins, \ + .num_pins = ARRAY_SIZE(grp ## _pins), \ + .data = (const struct meson8_pmx_data[]){ \ + PMX_DATA(r, b, false), \ + }, \ + } + +#define GPIO_GROUP(gpio) \ + { \ + .name = #gpio, \ + .pins = (const unsigned int[]){ gpio }, \ + .num_pins = 1, \ + .data = (const struct meson8_pmx_data[]){ \ + PMX_DATA(0, 0, true), \ + }, \ + } + +extern const struct pinmux_ops meson8_pmx_ops; diff --git a/drivers/pinctrl/meson/pinctrl-meson8.c b/drivers/pinctrl/meson/pinctrl-meson8.c index 68b345fc105a..49c7ce03547b 100644 --- a/drivers/pinctrl/meson/pinctrl-meson8.c +++ b/drivers/pinctrl/meson/pinctrl-meson8.c @@ -13,6 +13,7 @@ #include <dt-bindings/gpio/meson8-gpio.h> #include "pinctrl-meson.h" +#include "pinctrl-meson8-pmx.h" static const struct pinctrl_pin_desc meson8_cbus_pins[] = { MESON_PIN(GPIOX_0), @@ -1054,6 +1055,7 @@ static struct meson_pinctrl_data meson8_cbus_pinctrl_data = { .num_groups = ARRAY_SIZE(meson8_cbus_groups), .num_funcs = ARRAY_SIZE(meson8_cbus_functions), .num_banks = ARRAY_SIZE(meson8_cbus_banks), + .pmx_ops = &meson8_pmx_ops, }; static struct meson_pinctrl_data meson8_aobus_pinctrl_data = { @@ -1066,6 +1068,7 @@ static struct meson_pinctrl_data meson8_aobus_pinctrl_data = { .num_groups = ARRAY_SIZE(meson8_aobus_groups), .num_funcs = ARRAY_SIZE(meson8_aobus_functions), .num_banks = ARRAY_SIZE(meson8_aobus_banks), + .pmx_ops = &meson8_pmx_ops, }; static const struct of_device_id meson8_pinctrl_dt_match[] = { diff --git a/drivers/pinctrl/meson/pinctrl-meson8b.c b/drivers/pinctrl/meson/pinctrl-meson8b.c index 4d61df09bc3f..5bd808dc81e1 100644 --- a/drivers/pinctrl/meson/pinctrl-meson8b.c +++ b/drivers/pinctrl/meson/pinctrl-meson8b.c @@ -14,6 +14,7 @@ #include <dt-bindings/gpio/meson8b-gpio.h> #include "pinctrl-meson.h" +#include "pinctrl-meson8-pmx.h" static const struct pinctrl_pin_desc meson8b_cbus_pins[] = { MESON_PIN(GPIOX_0), @@ -914,6 +915,7 @@ static struct meson_pinctrl_data meson8b_cbus_pinctrl_data = { .num_groups = ARRAY_SIZE(meson8b_cbus_groups), .num_funcs = ARRAY_SIZE(meson8b_cbus_functions), .num_banks = ARRAY_SIZE(meson8b_cbus_banks), + .pmx_ops = &meson8_pmx_ops, }; static struct meson_pinctrl_data meson8b_aobus_pinctrl_data = { @@ -926,6 +928,7 @@ static struct meson_pinctrl_data meson8b_aobus_pinctrl_data = { .num_groups = ARRAY_SIZE(meson8b_aobus_groups), .num_funcs = ARRAY_SIZE(meson8b_aobus_functions), .num_banks = ARRAY_SIZE(meson8b_aobus_banks), + .pmx_ops = &meson8_pmx_ops, }; static const struct of_device_id meson8b_pinctrl_dt_match[] = { |