diff options
Diffstat (limited to 'kernel/drivers/pinctrl/spear/pinctrl-spear310.c')
-rw-r--r-- | kernel/drivers/pinctrl/spear/pinctrl-spear310.c | 432 |
1 files changed, 432 insertions, 0 deletions
diff --git a/kernel/drivers/pinctrl/spear/pinctrl-spear310.c b/kernel/drivers/pinctrl/spear/pinctrl-spear310.c new file mode 100644 index 000000000..31ede51e8 --- /dev/null +++ b/kernel/drivers/pinctrl/spear/pinctrl-spear310.c @@ -0,0 +1,432 @@ +/* + * 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, + .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); |