From: Beniamino Galvani Date: Tue, 16 Aug 2016 09:49:49 +0000 (+0200) Subject: pinctrl: add driver for meson-gxbb pin controller X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=677b53580d5d86ca65737497829d581544ae71bf;p=u-boot.git pinctrl: add driver for meson-gxbb pin controller Add a pin controller driver for Meson GXBB adapted from Linux kernel. Signed-off-by: Beniamino Galvani Reviewed-by: Simon Glass --- diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig index 44b53b9abd..f8cfd4bb24 100644 --- a/drivers/pinctrl/Kconfig +++ b/drivers/pinctrl/Kconfig @@ -168,6 +168,7 @@ config PIC32_PINCTRL endif +source "drivers/pinctrl/meson/Kconfig" source "drivers/pinctrl/nxp/Kconfig" source "drivers/pinctrl/uniphier/Kconfig" source "drivers/pinctrl/exynos/Kconfig" diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile index c92ab8c341..f28b5c18f6 100644 --- a/drivers/pinctrl/Makefile +++ b/drivers/pinctrl/Makefile @@ -14,3 +14,4 @@ obj-$(CONFIG_PINCTRL_SANDBOX) += pinctrl-sandbox.o obj-$(CONFIG_PINCTRL_UNIPHIER) += uniphier/ obj-$(CONFIG_PIC32_PINCTRL) += pinctrl_pic32.o obj-$(CONFIG_PINCTRL_EXYNOS) += exynos/ +obj-$(CONFIG_PINCTRL_MESON) += meson/ diff --git a/drivers/pinctrl/meson/Kconfig b/drivers/pinctrl/meson/Kconfig new file mode 100644 index 0000000000..c3e6901b9a --- /dev/null +++ b/drivers/pinctrl/meson/Kconfig @@ -0,0 +1,11 @@ +if ARCH_MESON + +config PINCTRL_MESON + depends on PINCTRL_GENERIC + bool + +config PINCTRL_MESON_GXBB + bool "Amlogic Meson GXBB SoC pinctrl driver" + select PINCTRL_MESON + +endif diff --git a/drivers/pinctrl/meson/Makefile b/drivers/pinctrl/meson/Makefile new file mode 100644 index 0000000000..6dde4bcb68 --- /dev/null +++ b/drivers/pinctrl/meson/Makefile @@ -0,0 +1,6 @@ +# +# SPDX-License-Identifier: GPL-2.0+ +# + +obj-y += pinctrl-meson.o +obj-$(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 new file mode 100644 index 0000000000..a0a7de5f0f --- /dev/null +++ b/drivers/pinctrl/meson/pinctrl-meson-gxbb.c @@ -0,0 +1,432 @@ +/* + * (C) Copyright 2016 - Beniamino Galvani + * + * Based on code from Linux kernel: + * Copyright (C) 2016 Endless Mobile, Inc. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include + +#include "pinctrl-meson.h" + +#define EE_OFF 14 + +static const unsigned int emmc_nand_d07_pins[] = { + PIN(BOOT_0, EE_OFF), PIN(BOOT_1, EE_OFF), PIN(BOOT_2, EE_OFF), + PIN(BOOT_3, EE_OFF), PIN(BOOT_4, EE_OFF), PIN(BOOT_5, EE_OFF), + PIN(BOOT_6, EE_OFF), PIN(BOOT_7, EE_OFF), +}; +static const unsigned int emmc_clk_pins[] = { PIN(BOOT_8, EE_OFF) }; +static const unsigned int emmc_cmd_pins[] = { PIN(BOOT_10, EE_OFF) }; +static const unsigned int emmc_ds_pins[] = { PIN(BOOT_15, EE_OFF) }; + +static const unsigned int sdcard_d0_pins[] = { PIN(CARD_1, EE_OFF) }; +static const unsigned int sdcard_d1_pins[] = { PIN(CARD_0, EE_OFF) }; +static const unsigned int sdcard_d2_pins[] = { PIN(CARD_5, EE_OFF) }; +static const unsigned int sdcard_d3_pins[] = { PIN(CARD_4, EE_OFF) }; +static const unsigned int sdcard_cmd_pins[] = { PIN(CARD_3, EE_OFF) }; +static const unsigned int sdcard_clk_pins[] = { PIN(CARD_2, EE_OFF) }; + +static const unsigned int uart_tx_a_pins[] = { PIN(GPIOX_12, EE_OFF) }; +static const unsigned int uart_rx_a_pins[] = { PIN(GPIOX_13, EE_OFF) }; +static const unsigned int uart_cts_a_pins[] = { PIN(GPIOX_14, EE_OFF) }; +static const unsigned int uart_rts_a_pins[] = { PIN(GPIOX_15, EE_OFF) }; + +static const unsigned int uart_tx_b_pins[] = { PIN(GPIODV_24, EE_OFF) }; +static const unsigned int uart_rx_b_pins[] = { PIN(GPIODV_25, EE_OFF) }; +static const unsigned int uart_cts_b_pins[] = { PIN(GPIODV_26, EE_OFF) }; +static const unsigned int uart_rts_b_pins[] = { PIN(GPIODV_27, EE_OFF) }; + +static const unsigned int uart_tx_c_pins[] = { PIN(GPIOY_13, EE_OFF) }; +static const unsigned int uart_rx_c_pins[] = { PIN(GPIOY_14, EE_OFF) }; +static const unsigned int uart_cts_c_pins[] = { PIN(GPIOX_11, EE_OFF) }; +static const unsigned int uart_rts_c_pins[] = { PIN(GPIOX_12, EE_OFF) }; + +static const unsigned int eth_mdio_pins[] = { PIN(GPIOZ_0, EE_OFF) }; +static const unsigned int eth_mdc_pins[] = { PIN(GPIOZ_1, EE_OFF) }; +static const unsigned int eth_clk_rx_clk_pins[] = { PIN(GPIOZ_2, EE_OFF) }; +static const unsigned int eth_rx_dv_pins[] = { PIN(GPIOZ_3, EE_OFF) }; +static const unsigned int eth_rxd0_pins[] = { PIN(GPIOZ_4, EE_OFF) }; +static const unsigned int eth_rxd1_pins[] = { PIN(GPIOZ_5, EE_OFF) }; +static const unsigned int eth_rxd2_pins[] = { PIN(GPIOZ_6, EE_OFF) }; +static const unsigned int eth_rxd3_pins[] = { PIN(GPIOZ_7, EE_OFF) }; +static const unsigned int eth_rgmii_tx_clk_pins[] = { PIN(GPIOZ_8, EE_OFF) }; +static const unsigned int eth_tx_en_pins[] = { PIN(GPIOZ_9, EE_OFF) }; +static const unsigned int eth_txd0_pins[] = { PIN(GPIOZ_10, EE_OFF) }; +static const unsigned int eth_txd1_pins[] = { PIN(GPIOZ_11, EE_OFF) }; +static const unsigned int eth_txd2_pins[] = { PIN(GPIOZ_12, EE_OFF) }; +static const unsigned int eth_txd3_pins[] = { PIN(GPIOZ_13, EE_OFF) }; + +static const unsigned int uart_tx_ao_a_pins[] = { PIN(GPIOAO_0, 0) }; +static const unsigned int uart_rx_ao_a_pins[] = { PIN(GPIOAO_1, 0) }; +static const unsigned int uart_cts_ao_a_pins[] = { PIN(GPIOAO_2, 0) }; +static const unsigned int uart_rts_ao_a_pins[] = { PIN(GPIOAO_3, 0) }; +static const unsigned int uart_tx_ao_b_pins[] = { PIN(GPIOAO_0, 0) }; +static const unsigned int uart_rx_ao_b_pins[] = { PIN(GPIOAO_1, 0), + PIN(GPIOAO_5, 0) }; +static const unsigned int uart_cts_ao_b_pins[] = { PIN(GPIOAO_2, 0) }; +static const unsigned int uart_rts_ao_b_pins[] = { PIN(GPIOAO_3, 0) }; + +static const unsigned int i2c_sck_ao_pins[] = {PIN(GPIOAO_4, 0) }; +static const unsigned int i2c_sda_ao_pins[] = {PIN(GPIOAO_5, 0) }; +static const unsigned int i2c_slave_sck_ao_pins[] = {PIN(GPIOAO_4, 0) }; +static const unsigned int i2c_slave_sda_ao_pins[] = {PIN(GPIOAO_5, 0) }; + +static struct meson_pmx_group meson_gxbb_periphs_groups[] = { + GPIO_GROUP(GPIOZ_0, EE_OFF), + GPIO_GROUP(GPIOZ_1, EE_OFF), + GPIO_GROUP(GPIOZ_2, EE_OFF), + GPIO_GROUP(GPIOZ_3, EE_OFF), + GPIO_GROUP(GPIOZ_4, EE_OFF), + GPIO_GROUP(GPIOZ_5, EE_OFF), + GPIO_GROUP(GPIOZ_6, EE_OFF), + GPIO_GROUP(GPIOZ_7, EE_OFF), + GPIO_GROUP(GPIOZ_8, EE_OFF), + GPIO_GROUP(GPIOZ_9, EE_OFF), + GPIO_GROUP(GPIOZ_10, EE_OFF), + GPIO_GROUP(GPIOZ_11, EE_OFF), + GPIO_GROUP(GPIOZ_12, EE_OFF), + GPIO_GROUP(GPIOZ_13, EE_OFF), + GPIO_GROUP(GPIOZ_14, EE_OFF), + GPIO_GROUP(GPIOZ_15, EE_OFF), + + GPIO_GROUP(GPIOH_0, EE_OFF), + GPIO_GROUP(GPIOH_1, EE_OFF), + GPIO_GROUP(GPIOH_2, EE_OFF), + GPIO_GROUP(GPIOH_3, EE_OFF), + + GPIO_GROUP(BOOT_0, EE_OFF), + GPIO_GROUP(BOOT_1, EE_OFF), + GPIO_GROUP(BOOT_2, EE_OFF), + GPIO_GROUP(BOOT_3, EE_OFF), + GPIO_GROUP(BOOT_4, EE_OFF), + GPIO_GROUP(BOOT_5, EE_OFF), + GPIO_GROUP(BOOT_6, EE_OFF), + GPIO_GROUP(BOOT_7, EE_OFF), + GPIO_GROUP(BOOT_8, EE_OFF), + GPIO_GROUP(BOOT_9, EE_OFF), + GPIO_GROUP(BOOT_10, EE_OFF), + GPIO_GROUP(BOOT_11, EE_OFF), + GPIO_GROUP(BOOT_12, EE_OFF), + GPIO_GROUP(BOOT_13, EE_OFF), + GPIO_GROUP(BOOT_14, EE_OFF), + GPIO_GROUP(BOOT_15, EE_OFF), + GPIO_GROUP(BOOT_16, EE_OFF), + GPIO_GROUP(BOOT_17, EE_OFF), + + GPIO_GROUP(CARD_0, EE_OFF), + GPIO_GROUP(CARD_1, EE_OFF), + GPIO_GROUP(CARD_2, EE_OFF), + GPIO_GROUP(CARD_3, EE_OFF), + GPIO_GROUP(CARD_4, EE_OFF), + GPIO_GROUP(CARD_5, EE_OFF), + GPIO_GROUP(CARD_6, EE_OFF), + + GPIO_GROUP(GPIODV_0, EE_OFF), + GPIO_GROUP(GPIODV_1, EE_OFF), + GPIO_GROUP(GPIODV_2, EE_OFF), + GPIO_GROUP(GPIODV_3, EE_OFF), + GPIO_GROUP(GPIODV_4, EE_OFF), + GPIO_GROUP(GPIODV_5, EE_OFF), + GPIO_GROUP(GPIODV_6, EE_OFF), + GPIO_GROUP(GPIODV_7, EE_OFF), + GPIO_GROUP(GPIODV_8, EE_OFF), + GPIO_GROUP(GPIODV_9, EE_OFF), + GPIO_GROUP(GPIODV_10, EE_OFF), + GPIO_GROUP(GPIODV_11, EE_OFF), + GPIO_GROUP(GPIODV_12, EE_OFF), + GPIO_GROUP(GPIODV_13, EE_OFF), + GPIO_GROUP(GPIODV_14, EE_OFF), + GPIO_GROUP(GPIODV_15, EE_OFF), + GPIO_GROUP(GPIODV_16, EE_OFF), + GPIO_GROUP(GPIODV_17, EE_OFF), + GPIO_GROUP(GPIODV_19, EE_OFF), + GPIO_GROUP(GPIODV_20, EE_OFF), + GPIO_GROUP(GPIODV_21, EE_OFF), + GPIO_GROUP(GPIODV_22, EE_OFF), + GPIO_GROUP(GPIODV_23, EE_OFF), + GPIO_GROUP(GPIODV_24, EE_OFF), + GPIO_GROUP(GPIODV_25, EE_OFF), + GPIO_GROUP(GPIODV_26, EE_OFF), + GPIO_GROUP(GPIODV_27, EE_OFF), + GPIO_GROUP(GPIODV_28, EE_OFF), + GPIO_GROUP(GPIODV_29, EE_OFF), + + GPIO_GROUP(GPIOY_0, EE_OFF), + GPIO_GROUP(GPIOY_1, EE_OFF), + GPIO_GROUP(GPIOY_2, EE_OFF), + GPIO_GROUP(GPIOY_3, EE_OFF), + GPIO_GROUP(GPIOY_4, EE_OFF), + GPIO_GROUP(GPIOY_5, EE_OFF), + GPIO_GROUP(GPIOY_6, EE_OFF), + GPIO_GROUP(GPIOY_7, EE_OFF), + GPIO_GROUP(GPIOY_8, EE_OFF), + GPIO_GROUP(GPIOY_9, EE_OFF), + GPIO_GROUP(GPIOY_10, EE_OFF), + GPIO_GROUP(GPIOY_11, EE_OFF), + GPIO_GROUP(GPIOY_12, EE_OFF), + GPIO_GROUP(GPIOY_13, EE_OFF), + GPIO_GROUP(GPIOY_14, EE_OFF), + GPIO_GROUP(GPIOY_15, EE_OFF), + GPIO_GROUP(GPIOY_16, EE_OFF), + + GPIO_GROUP(GPIOX_0, EE_OFF), + GPIO_GROUP(GPIOX_1, EE_OFF), + GPIO_GROUP(GPIOX_2, EE_OFF), + GPIO_GROUP(GPIOX_3, EE_OFF), + GPIO_GROUP(GPIOX_4, EE_OFF), + GPIO_GROUP(GPIOX_5, EE_OFF), + GPIO_GROUP(GPIOX_6, EE_OFF), + GPIO_GROUP(GPIOX_7, EE_OFF), + GPIO_GROUP(GPIOX_8, EE_OFF), + GPIO_GROUP(GPIOX_9, EE_OFF), + GPIO_GROUP(GPIOX_10, EE_OFF), + GPIO_GROUP(GPIOX_11, EE_OFF), + GPIO_GROUP(GPIOX_12, EE_OFF), + GPIO_GROUP(GPIOX_13, EE_OFF), + GPIO_GROUP(GPIOX_14, EE_OFF), + GPIO_GROUP(GPIOX_15, EE_OFF), + GPIO_GROUP(GPIOX_16, EE_OFF), + GPIO_GROUP(GPIOX_17, EE_OFF), + GPIO_GROUP(GPIOX_18, EE_OFF), + GPIO_GROUP(GPIOX_19, EE_OFF), + GPIO_GROUP(GPIOX_20, EE_OFF), + GPIO_GROUP(GPIOX_21, EE_OFF), + GPIO_GROUP(GPIOX_22, EE_OFF), + + GPIO_GROUP(GPIOCLK_0, EE_OFF), + GPIO_GROUP(GPIOCLK_1, EE_OFF), + GPIO_GROUP(GPIOCLK_2, EE_OFF), + GPIO_GROUP(GPIOCLK_3, EE_OFF), + + GPIO_GROUP(GPIO_TEST_N, EE_OFF), + + /* Bank X */ + GROUP(uart_tx_a, 4, 13), + GROUP(uart_rx_a, 4, 12), + GROUP(uart_cts_a, 4, 11), + GROUP(uart_rts_a, 4, 10), + + /* Bank Y */ + GROUP(uart_cts_c, 1, 19), + GROUP(uart_rts_c, 1, 18), + GROUP(uart_tx_c, 1, 17), + GROUP(uart_rx_c, 1, 16), + + /* Bank Z */ + GROUP(eth_mdio, 6, 1), + GROUP(eth_mdc, 6, 0), + GROUP(eth_clk_rx_clk, 6, 13), + GROUP(eth_rx_dv, 6, 12), + GROUP(eth_rxd0, 6, 11), + GROUP(eth_rxd1, 6, 10), + GROUP(eth_rxd2, 6, 9), + GROUP(eth_rxd3, 6, 8), + GROUP(eth_rgmii_tx_clk, 6, 7), + GROUP(eth_tx_en, 6, 6), + GROUP(eth_txd0, 6, 5), + GROUP(eth_txd1, 6, 4), + GROUP(eth_txd2, 6, 3), + GROUP(eth_txd3, 6, 2), + + /* Bank DV */ + GROUP(uart_tx_b, 2, 29), + GROUP(uart_rx_b, 2, 28), + GROUP(uart_cts_b, 2, 27), + GROUP(uart_rts_b, 2, 26), + + /* Bank BOOT */ + GROUP(emmc_nand_d07, 4, 30), + GROUP(emmc_clk, 4, 18), + GROUP(emmc_cmd, 4, 19), + GROUP(emmc_ds, 4, 31), + + /* Bank CARD */ + GROUP(sdcard_d1, 2, 14), + GROUP(sdcard_d0, 2, 15), + GROUP(sdcard_d3, 2, 12), + GROUP(sdcard_d2, 2, 13), + GROUP(sdcard_cmd, 2, 10), + GROUP(sdcard_clk, 2, 11), +}; + +static struct meson_pmx_group meson_gxbb_aobus_groups[] = { + GPIO_GROUP(GPIOAO_0, 0), + GPIO_GROUP(GPIOAO_1, 0), + GPIO_GROUP(GPIOAO_2, 0), + GPIO_GROUP(GPIOAO_3, 0), + GPIO_GROUP(GPIOAO_4, 0), + GPIO_GROUP(GPIOAO_5, 0), + GPIO_GROUP(GPIOAO_6, 0), + GPIO_GROUP(GPIOAO_7, 0), + GPIO_GROUP(GPIOAO_8, 0), + GPIO_GROUP(GPIOAO_9, 0), + GPIO_GROUP(GPIOAO_10, 0), + GPIO_GROUP(GPIOAO_11, 0), + GPIO_GROUP(GPIOAO_12, 0), + GPIO_GROUP(GPIOAO_13, 0), + + /* bank AO */ + GROUP(uart_tx_ao_b, 0, 26), + GROUP(uart_rx_ao_b, 0, 25), + GROUP(uart_tx_ao_a, 0, 12), + GROUP(uart_rx_ao_a, 0, 11), + GROUP(uart_cts_ao_a, 0, 10), + GROUP(uart_rts_ao_a, 0, 9), + GROUP(uart_cts_ao_b, 0, 8), + GROUP(uart_rts_ao_b, 0, 7), + GROUP(i2c_sck_ao, 0, 6), + GROUP(i2c_sda_ao, 0, 5), + GROUP(i2c_slave_sck_ao, 0, 2), + GROUP(i2c_slave_sda_ao, 0, 1), +}; + +static const char * const gpio_periphs_groups[] = { + "GPIOZ_0", "GPIOZ_1", "GPIOZ_2", "GPIOZ_3", "GPIOZ_4", + "GPIOZ_5", "GPIOZ_6", "GPIOZ_7", "GPIOZ_8", "GPIOZ_9", + "GPIOZ_10", "GPIOZ_11", "GPIOZ_12", "GPIOZ_13", "GPIOZ_14", + "GPIOZ_15", + + "GPIOH_0", "GPIOH_1", "GPIOH_2", "GPIOH_3", + + "BOOT_0", "BOOT_1", "BOOT_2", "BOOT_3", "BOOT_4", + "BOOT_5", "BOOT_6", "BOOT_7", "BOOT_8", "BOOT_9", + "BOOT_10", "BOOT_11", "BOOT_12", "BOOT_13", "BOOT_14", + "BOOT_15", "BOOT_16", "BOOT_17", + + "CARD_0", "CARD_1", "CARD_2", "CARD_3", "CARD_4", + "CARD_5", "CARD_6", + + "GPIODV_0", "GPIODV_1", "GPIODV_2", "GPIODV_3", "GPIODV_4", + "GPIODV_5", "GPIODV_6", "GPIODV_7", "GPIODV_8", "GPIODV_9", + "GPIODV_10", "GPIODV_11", "GPIODV_12", "GPIODV_13", "GPIODV_14", + "GPIODV_15", "GPIODV_16", "GPIODV_17", "GPIODV_18", "GPIODV_19", + "GPIODV_20", "GPIODV_21", "GPIODV_22", "GPIODV_23", "GPIODV_24", + "GPIODV_25", "GPIODV_26", "GPIODV_27", "GPIODV_28", "GPIODV_29", + + "GPIOY_0", "GPIOY_1", "GPIOY_2", "GPIOY_3", "GPIOY_4", + "GPIOY_5", "GPIOY_6", "GPIOY_7", "GPIOY_8", "GPIOY_9", + "GPIOY_10", "GPIOY_11", "GPIOY_12", "GPIOY_13", "GPIOY_14", + "GPIOY_15", "GPIOY_16", + + "GPIOX_0", "GPIOX_1", "GPIOX_2", "GPIOX_3", "GPIOX_4", + "GPIOX_5", "GPIOX_6", "GPIOX_7", "GPIOX_8", "GPIOX_9", + "GPIOX_10", "GPIOX_11", "GPIOX_12", "GPIOX_13", "GPIOX_14", + "GPIOX_15", "GPIOX_16", "GPIOX_17", "GPIOX_18", "GPIOX_19", + "GPIOX_20", "GPIOX_21", "GPIOX_22", + + "GPIO_TEST_N", +}; + +static const char * const emmc_groups[] = { + "emmc_nand_d07", "emmc_clk", "emmc_cmd", "emmc_ds", +}; + +static const char * const sdcard_groups[] = { + "sdcard_d0", "sdcard_d1", "sdcard_d2", "sdcard_d3", + "sdcard_cmd", "sdcard_clk", +}; + +static const char * const uart_a_groups[] = { + "uart_tx_a", "uart_rx_a", "uart_cts_a", "uart_rts_a", +}; + +static const char * const uart_b_groups[] = { + "uart_tx_b", "uart_rx_b", "uart_cts_b", "uart_rts_b", +}; + +static const char * const uart_c_groups[] = { + "uart_tx_c", "uart_rx_c", "uart_cts_c", "uart_rts_c", +}; + +static const char * const eth_groups[] = { + "eth_mdio", "eth_mdc", "eth_clk_rx_clk", "eth_rx_dv", + "eth_rxd0", "eth_rxd1", "eth_rxd2", "eth_rxd3", + "eth_rgmii_tx_clk", "eth_tx_en", + "eth_txd0", "eth_txd1", "eth_txd2", "eth_txd3", +}; + +static const char * const gpio_aobus_groups[] = { + "GPIOAO_0", "GPIOAO_1", "GPIOAO_2", "GPIOAO_3", "GPIOAO_4", + "GPIOAO_5", "GPIOAO_6", "GPIOAO_7", "GPIOAO_8", "GPIOAO_9", + "GPIOAO_10", "GPIOAO_11", "GPIOAO_12", "GPIOAO_13", +}; + +static const char * const uart_ao_groups[] = { + "uart_tx_ao_a", "uart_rx_ao_a", "uart_cts_ao_a", "uart_rts_ao_a", +}; + +static const char * const uart_ao_b_groups[] = { + "uart_tx_ao_b", "uart_rx_ao_b", "uart_cts_ao_b", "uart_rts_ao_b", +}; + +static const char * const i2c_ao_groups[] = { + "i2c_sdk_ao", "i2c_sda_ao", +}; + +static const char * const i2c_slave_ao_groups[] = { + "i2c_slave_sdk_ao", "i2c_slave_sda_ao", +}; + +static struct meson_pmx_func meson_gxbb_periphs_functions[] = { + FUNCTION(gpio_periphs), + FUNCTION(emmc), + FUNCTION(sdcard), + FUNCTION(uart_a), + FUNCTION(uart_b), + FUNCTION(uart_c), + FUNCTION(eth), +}; + +static struct meson_pmx_func meson_gxbb_aobus_functions[] = { + FUNCTION(gpio_aobus), + FUNCTION(uart_ao), + FUNCTION(uart_ao_b), + FUNCTION(i2c_ao), + FUNCTION(i2c_slave_ao), +}; + +struct meson_pinctrl_data meson_gxbb_periphs_pinctrl_data = { + .name = "periphs-banks", + .pin_base = 14, + .groups = meson_gxbb_periphs_groups, + .funcs = meson_gxbb_periphs_functions, + .num_pins = 120, + .num_groups = ARRAY_SIZE(meson_gxbb_periphs_groups), + .num_funcs = ARRAY_SIZE(meson_gxbb_periphs_functions), +}; + +struct meson_pinctrl_data meson_gxbb_aobus_pinctrl_data = { + .name = "aobus-banks", + .pin_base = 0, + .groups = meson_gxbb_aobus_groups, + .funcs = meson_gxbb_aobus_functions, + .num_pins = 14, + .num_groups = ARRAY_SIZE(meson_gxbb_aobus_groups), + .num_funcs = ARRAY_SIZE(meson_gxbb_aobus_functions), +}; + +static const struct udevice_id meson_gxbb_pinctrl_match[] = { + { + .compatible = "amlogic,meson-gxbb-periphs-pinctrl", + .data = (ulong)&meson_gxbb_periphs_pinctrl_data, + }, + { + .compatible = "amlogic,meson-gxbb-aobus-pinctrl", + .data = (ulong)&meson_gxbb_aobus_pinctrl_data, + }, + { /* sentinel */ } +}; + +U_BOOT_DRIVER(meson_gxbb_pinctrl) = { + .name = "meson-gxbb-pinctrl", + .id = UCLASS_PINCTRL, + .of_match = of_match_ptr(meson_gxbb_pinctrl_match), + .probe = meson_pinctrl_probe, + .priv_auto_alloc_size = sizeof(struct meson_pinctrl), + .ops = &meson_pinctrl_ops, +}; diff --git a/drivers/pinctrl/meson/pinctrl-meson.c b/drivers/pinctrl/meson/pinctrl-meson.c new file mode 100644 index 0000000000..d21a3dd755 --- /dev/null +++ b/drivers/pinctrl/meson/pinctrl-meson.c @@ -0,0 +1,179 @@ +/* + * (C) Copyright 2016 - Beniamino Galvani + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include +#include +#include +#include + +#include "pinctrl-meson.h" + +DECLARE_GLOBAL_DATA_PTR; + +static const char *meson_pinctrl_dummy_name = "_dummy"; + +static int meson_pinctrl_get_groups_count(struct udevice *dev) +{ + struct meson_pinctrl *priv = dev_get_priv(dev); + + return priv->data->num_groups; +} + +static const char *meson_pinctrl_get_group_name(struct udevice *dev, + unsigned selector) +{ + struct meson_pinctrl *priv = dev_get_priv(dev); + + if (!priv->data->groups[selector].name) + return meson_pinctrl_dummy_name; + + return priv->data->groups[selector].name; +} + +static int meson_pinmux_get_functions_count(struct udevice *dev) +{ + struct meson_pinctrl *priv = dev_get_priv(dev); + + return priv->data->num_funcs; +} + +static const char *meson_pinmux_get_function_name(struct udevice *dev, + unsigned selector) +{ + struct meson_pinctrl *priv = dev_get_priv(dev); + + return priv->data->funcs[selector].name; +} + +static void meson_pinmux_disable_other_groups(struct meson_pinctrl *priv, + unsigned int pin, int sel_group) +{ + struct meson_pmx_group *group; + void __iomem *addr; + int i, j; + + for (i = 0; i < priv->data->num_groups; i++) { + group = &priv->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 */ + debug("pinmux: disabling %s\n", group->name); + addr = priv->reg_mux + group->reg * 4; + writel(readl(addr) & ~BIT(group->bit), addr); + } + } + } +} + +static int meson_pinmux_group_set(struct udevice *dev, + unsigned group_selector, + unsigned func_selector) +{ + struct meson_pinctrl *priv = dev_get_priv(dev); + const struct meson_pmx_group *group; + const struct meson_pmx_func *func; + void __iomem *addr; + int i; + + group = &priv->data->groups[group_selector]; + func = &priv->data->funcs[func_selector]; + + debug("pinmux: set group %s func %s\n", group->name, func->name); + + /* + * Disable groups using the same pins. + * The selected group is not disabled to avoid glitches. + */ + for (i = 0; i < group->num_pins; i++) { + meson_pinmux_disable_other_groups(priv, + group->pins[i], + group_selector); + } + + /* Function 0 (GPIO) doesn't need any additional setting */ + if (func_selector) { + addr = priv->reg_mux + group->reg * 4; + writel(readl(addr) | BIT(group->bit), addr); + } + + return 0; +} + +const struct pinctrl_ops meson_pinctrl_ops = { + .get_groups_count = meson_pinctrl_get_groups_count, + .get_group_name = meson_pinctrl_get_group_name, + .get_functions_count = meson_pinmux_get_functions_count, + .get_function_name = meson_pinmux_get_function_name, + .pinmux_group_set = meson_pinmux_group_set, + .set_state = pinctrl_generic_set_state, +}; + +static fdt_addr_t parse_address(int offset, const char *name, int na, int ns) +{ + int index, len = 0; + const fdt32_t *reg; + + index = fdt_find_string(gd->fdt_blob, offset, "reg-names", name); + if (index < 0) + return FDT_ADDR_T_NONE; + + reg = fdt_getprop(gd->fdt_blob, offset, "reg", &len); + if (!reg || (len <= (index * sizeof(fdt32_t) * (na + ns)))) + return FDT_ADDR_T_NONE; + + reg += index * (na + ns); + + return fdt_translate_address((void *)gd->fdt_blob, offset, reg); +} + +int meson_pinctrl_probe(struct udevice *dev) +{ + struct meson_pinctrl *priv = dev_get_priv(dev); + fdt_addr_t addr; + int node, gpio = -1, len; + int na, ns; + + na = fdt_address_cells(gd->fdt_blob, dev->parent->of_offset); + if (na < 1) { + debug("bad #address-cells\n"); + return -EINVAL; + } + + ns = fdt_size_cells(gd->fdt_blob, dev->parent->of_offset); + if (ns < 1) { + debug("bad #size-cells\n"); + return -EINVAL; + } + + fdt_for_each_subnode(gd->fdt_blob, node, dev->of_offset) { + if (fdt_getprop(gd->fdt_blob, node, "gpio-controller", &len)) { + gpio = node; + break; + } + } + + if (!gpio) { + debug("gpio node not found\n"); + return -EINVAL; + } + + addr = parse_address(gpio, "mux", na, ns); + if (addr == FDT_ADDR_T_NONE) { + debug("mux not found\n"); + return -EINVAL; + } + + priv->reg_mux = (void __iomem *)addr; + priv->data = (struct meson_pinctrl_data *)dev_get_driver_data(dev); + + return 0; +} diff --git a/drivers/pinctrl/meson/pinctrl-meson.h b/drivers/pinctrl/meson/pinctrl-meson.h new file mode 100644 index 0000000000..4127a60f48 --- /dev/null +++ b/drivers/pinctrl/meson/pinctrl-meson.h @@ -0,0 +1,74 @@ +/* + * (C) Copyright 2016 - Beniamino Galvani + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef __PINCTRL_MESON_H__ +#define __PINCTRL_MESON_H__ + +#include + +struct meson_pmx_group { + const char *name; + const unsigned int *pins; + unsigned int num_pins; + bool is_gpio; + unsigned int reg; + unsigned int bit; +}; + +struct meson_pmx_func { + const char *name; + const char * const *groups; + unsigned int num_groups; +}; + +struct meson_pinctrl_data { + const char *name; + struct meson_pmx_group *groups; + struct meson_pmx_func *funcs; + unsigned int pin_base; + unsigned int num_pins; + unsigned int num_groups; + unsigned int num_funcs; +}; + +struct meson_pinctrl { + struct meson_pinctrl_data *data; + void __iomem *reg_mux; +}; + +#define PIN(x, b) (b + x) + +#define GROUP(grp, r, b) \ + { \ + .name = #grp, \ + .pins = grp ## _pins, \ + .num_pins = ARRAY_SIZE(grp ## _pins), \ + .reg = r, \ + .bit = b, \ + } + +#define GPIO_GROUP(gpio, b) \ + { \ + .name = #gpio, \ + .pins = (const unsigned int[]){ PIN(gpio, b) }, \ + .num_pins = 1, \ + .is_gpio = true, \ + } + +#define FUNCTION(fn) \ + { \ + .name = #fn, \ + .groups = fn ## _groups, \ + .num_groups = ARRAY_SIZE(fn ## _groups), \ + } + +#define MESON_PIN(x, b) PINCTRL_PIN(PIN(x, b), #x) + +extern const struct pinctrl_ops meson_pinctrl_ops; + +int meson_pinctrl_probe(struct udevice *dev); + +#endif /* __PINCTRL_MESON_H__ */