/* * Driver for the ST Microelectronics SPEAr310 pinmux * * Copyright (C) 2012 ST Microelectronics * Viresh Kumar <viresh.linux@gmail.com> * * This file is licensed under the terms of the GNU General Public * License version 2. This program is licensed "as is" without any * warranty of any kind, whether express or implied. */ #include <linux/err.h> #include <linux/init.h> #include <linux/module.h> #include <linux/of_device.h> #include <linux/platform_device.h> #include "pinctrl-spear3xx.h" #define DRIVER_NAME "spear310-pinmux" /* addresses */ #define PMX_CONFIG_REG 0x08 /* emi_cs_0_to_5_pins */ static const unsigned emi_cs_0_to_5_pins[] = { 45, 46, 47, 48, 49, 50 }; static struct spear_muxreg emi_cs_0_to_5_muxreg[] = { { .reg = PMX_CONFIG_REG, .mask = PMX_TIMER_0_1_MASK | PMX_TIMER_2_3_MASK, .val = 0, }, }; static struct spear_modemux emi_cs_0_to_5_modemux[] = { { .muxregs = emi_cs_0_to_5_muxreg, .nmuxregs = ARRAY_SIZE(emi_cs_0_to_5_muxreg), }, }; static struct spear_pingroup emi_cs_0_to_5_pingroup = { .name = "emi_cs_0_to_5_grp", .pins = emi_cs_0_to_5_pins, .npins = ARRAY_SIZE(emi_cs_0_to_5_pins), .modemuxs = emi_cs_0_to_5_modemux, .nmodemuxs = ARRAY_SIZE(emi_cs_0_to_5_modemux), }; static const char *const emi_cs_0_to_5_grps[] = { "emi_cs_0_to_5_grp" }; static struct spear_function emi_cs_0_to_5_function = { .name = "emi", .groups = emi_cs_0_to_5_grps, .ngroups = ARRAY_SIZE(emi_cs_0_to_5_grps), }; /* uart1_pins */ static const unsigned uart1_pins[] = { 0, 1 }; static struct spear_muxreg uart1_muxreg[] = { { .reg = PMX_CONFIG_REG, .mask = PMX_FIRDA_MASK, .val = 0, }, }; static struct spear_modemux uart1_modemux[] = { { .muxregs = uart1_muxreg, .nmuxregs = ARRAY_SIZE(uart1_muxreg), }, }; static struct spear_pingroup uart1_pingroup = { .name = "uart1_grp", .pins = uart1_pins, .npins = ARRAY_SIZE(uart1_pins), .modemuxs = uart1_modemux, .nmodemuxs = ARRAY_SIZE(uart1_modemux), }; static const char *const uart1_grps[] = { "uart1_grp" }; static struct spear_function uart1_function = { .name = "uart1", .groups = uart1_grps, .ngroups = ARRAY_SIZE(uart1_grps), }; /* uart2_pins */ static const unsigned uart2_pins[] = { 43, 44 }; static struct spear_muxreg uart2_muxreg[] = { { .reg = PMX_CONFIG_REG, .mask = PMX_TIMER_0_1_MASK, .val = 0, }, }; static struct spear_modemux uart2_modemux[] = { { .muxregs = uart2_muxreg, .nmuxregs = ARRAY_SIZE(uart2_muxreg), }, }; static struct spear_pingroup uart2_pingroup = { .name = "uart2_grp", .pins = uart2_pins, .npins = ARRAY_SIZE(uart2_pins), .modemuxs = uart2_modemux, .nmodemuxs = ARRAY_SIZE(uart2_modemux), }; static const char *const uart2_grps[] = { "uart2_grp" }; static struct spear_function uart2_function = { .name = "uart2", .groups = uart2_grps, .ngroups = ARRAY_SIZE(uart2_grps), }; /* uart3_pins */ static const unsigned uart3_pins[] = { 37, 38 }; static struct spear_muxreg uart3_muxreg[] = { { .reg = PMX_CONFIG_REG, .mask = PMX_UART0_MODEM_MASK, .val = 0, }, }; static struct spear_modemux uart3_modemux[] = { { .muxregs = uart3_muxreg, .nmuxregs = ARRAY_SIZE(uart3_muxreg), }, }; static struct spear_pingroup uart3_pingroup = { .name = "uart3_grp", .pins = uart3_pins, .npins = ARRAY_SIZE(uart3_pins), .modemuxs = uart3_modemux, .nmodemuxs = ARRAY_SIZE(uart3_modemux), }; static const char *const uart3_grps[] = { "uart3_grp" }; static struct spear_function uart3_function = { .name = "uart3", .groups = uart3_grps, .ngroups = ARRAY_SIZE(uart3_grps), }; /* uart4_pins */ static const unsigned uart4_pins[] = { 39, 40 }; static struct spear_muxreg uart4_muxreg[] = { { .reg = PMX_CONFIG_REG, .mask = PMX_UART0_MODEM_MASK, .val = 0, }, }; static struct spear_modemux uart4_modemux[] = { { .muxregs = uart4_muxreg, .nmuxregs = ARRAY_SIZE(uart4_muxreg), }, }; static struct spear_pingroup uart4_pingroup = { .name = "uart4_grp", .pins = uart4_pins, .npins = ARRAY_SIZE(uart4_pins), .modemuxs = uart4_modemux, .nmodemuxs = ARRAY_SIZE(uart4_modemux), }; static const char *const uart4_grps[] = { "uart4_grp" }; static struct spear_function uart4_function = { .name = "uart4", .groups = uart4_grps, .ngroups = ARRAY_SIZE(uart4_grps), }; /* uart5_pins */ static const unsigned uart5_pins[] = { 41, 42 }; static struct spear_muxreg uart5_muxreg[] = { { .reg = PMX_CONFIG_REG, .mask = PMX_UART0_MODEM_MASK, .val = 0, }, }; static struct spear_modemux uart5_modemux[] = { { .muxregs = uart5_muxreg, .nmuxregs = ARRAY_SIZE(uart5_muxreg), }, }; static struct spear_pingroup uart5_pingroup = { .name = "uart5_grp", .pins = uart5_pins, .npins = ARRAY_SIZE(uart5_pins), .modemuxs = uart5_modemux, .nmodemuxs = ARRAY_SIZE(uart5_modemux), }; static const char *const uart5_grps[] = { "uart5_grp" }; static struct spear_function uart5_function = { .name = "uart5", .groups = uart5_grps, .ngroups = ARRAY_SIZE(uart5_grps), }; /* fsmc_pins */ static const unsigned fsmc_pins[] = { 34, 35, 36 }; static struct spear_muxreg fsmc_muxreg[] = { { .reg = PMX_CONFIG_REG, .mask = PMX_SSP_CS_MASK, .val = 0, }, }; static struct spear_modemux fsmc_modemux[] = { { .muxregs = fsmc_muxreg, .nmuxregs = ARRAY_SIZE(fsmc_muxreg), }, }; static struct spear_pingroup fsmc_pingroup = { .name = "fsmc_grp", .pins = fsmc_pins, .npins = ARRAY_SIZE(fsmc_pins), .modemuxs = fsmc_modemux, .nmodemuxs = ARRAY_SIZE(fsmc_modemux), }; static const char *const fsmc_grps[] = { "fsmc_grp" }; static struct spear_function fsmc_function = { .name = "fsmc", .groups = fsmc_grps, .ngroups = ARRAY_SIZE(fsmc_grps), }; /* rs485_0_pins */ static const unsigned rs485_0_pins[] = { 19, 20, 21, 22, 23 }; static struct spear_muxreg rs485_0_muxreg[] = { { .reg = PMX_CONFIG_REG, .mask = PMX_MII_MASK, .val = 0, }, }; static struct spear_modemux rs485_0_modemux[] = { { .muxregs = rs485_0_muxreg, .nmuxregs = ARRAY_SIZE(rs485_0_muxreg), }, }; static struct spear_pingroup rs485_0_pingroup = { .name = "rs485_0_grp", .pins = rs485_0_pins, .npins = ARRAY_SIZE(rs485_0_pins), .modemuxs = rs485_0_modemux, .nmodemuxs = ARRAY_SIZE(rs485_0_modemux), }; static const char *const rs485_0_grps[] = { "rs485_0" }; static struct spear_function rs485_0_function = { .name = "rs485_0", .groups = rs485_0_grps, .ngroups = ARRAY_SIZE(rs485_0_grps), }; /* rs485_1_pins */ static const unsigned rs485_1_pins[] = { 14, 15, 16, 17, 18 }; static struct spear_muxreg rs485_1_muxreg[] = { { .reg = PMX_CONFIG_REG, .mask = PMX_MII_MASK, .val = 0, }, }; static struct spear_modemux rs485_1_modemux[] = { { .muxregs = rs485_1_muxreg, .nmuxregs = ARRAY_SIZE(rs485_1_muxreg), }, }; static struct spear_pingroup rs485_1_pingroup = { .name = "rs485_1_grp", .pins = rs485_1_pins, .npins = ARRAY_SIZE(rs485_1_pins), .modemuxs = rs485_1_modemux, .nmodemuxs = ARRAY_SIZE(rs485_1_modemux), }; static const char *const rs485_1_grps[] = { "rs485_1" }; static struct spear_function rs485_1_function = { .name = "rs485_1", .groups = rs485_1_grps, .ngroups = ARRAY_SIZE(rs485_1_grps), }; /* tdm_pins */ static const unsigned tdm_pins[] = { 10, 11, 12, 13 }; static struct spear_muxreg tdm_muxreg[] = { { .reg = PMX_CONFIG_REG, .mask = PMX_MII_MASK, .val = 0, }, }; static struct spear_modemux tdm_modemux[] = { { .muxregs = tdm_muxreg, .nmuxregs = ARRAY_SIZE(tdm_muxreg), }, }; static struct spear_pingroup tdm_pingroup = { .name = "tdm_grp", .pins = tdm_pins, .npins = ARRAY_SIZE(tdm_pins), .modemuxs = tdm_modemux, .nmodemuxs = ARRAY_SIZE(tdm_modemux), }; static const char *const tdm_grps[] = { "tdm_grp" }; static struct spear_function tdm_function = { .name = "tdm", .groups = tdm_grps, .ngroups = ARRAY_SIZE(tdm_grps), }; /* pingroups */ static struct spear_pingroup *spear310_pingroups[] = { SPEAR3XX_COMMON_PINGROUPS, &emi_cs_0_to_5_pingroup, &uart1_pingroup, &uart2_pingroup, &uart3_pingroup, &uart4_pingroup, &uart5_pingroup, &fsmc_pingroup, &rs485_0_pingroup, &rs485_1_pingroup, &tdm_pingroup, }; /* functions */ static struct spear_function *spear310_functions[] = { SPEAR3XX_COMMON_FUNCTIONS, &emi_cs_0_to_5_function, &uart1_function, &uart2_function, &uart3_function, &uart4_function, &uart5_function, &fsmc_function, &rs485_0_function, &rs485_1_function, &tdm_function, }; static const struct of_device_id spear310_pinctrl_of_match[] = { { .compatible = "st,spear310-pinmux", }, {}, }; static int spear310_pinctrl_probe(struct platform_device *pdev) { int ret; spear3xx_machdata.groups = spear310_pingroups; spear3xx_machdata.ngroups = ARRAY_SIZE(spear310_pingroups); spear3xx_machdata.functions = spear310_functions; spear3xx_machdata.nfunctions = ARRAY_SIZE(spear310_functions); pmx_init_addr(&spear3xx_machdata, PMX_CONFIG_REG); pmx_init_gpio_pingroup_addr(spear3xx_machdata.gpio_pingroups, spear3xx_machdata.ngpio_pingroups, PMX_CONFIG_REG); spear3xx_machdata.modes_supported = false; ret = spear_pinctrl_probe(pdev, &spear3xx_machdata); if (ret) return ret; return 0; } static int spear310_pinctrl_remove(struct platform_device *pdev) { return spear_pinctrl_remove(pdev); } static struct platform_driver spear310_pinctrl_driver = { .driver = { .name = DRIVER_NAME, .owner = THIS_MODULE, .of_match_table = spear310_pinctrl_of_match, }, .probe = spear310_pinctrl_probe, .remove = spear310_pinctrl_remove, }; static int __init spear310_pinctrl_init(void) { return platform_driver_register(&spear310_pinctrl_driver); } arch_initcall(spear310_pinctrl_init); static void __exit spear310_pinctrl_exit(void) { platform_driver_unregister(&spear310_pinctrl_driver); } module_exit(spear310_pinctrl_exit); MODULE_AUTHOR("Viresh Kumar <viresh.linux@gmail.com>"); MODULE_DESCRIPTION("ST Microelectronics SPEAr310 pinctrl driver"); MODULE_LICENSE("GPL v2"); MODULE_DEVICE_TABLE(of, spear310_pinctrl_of_match);