/* * linux/drivers/pinctrl/pinmux-xway.c * based on linux/drivers/pinctrl/pinmux-pxa910.c * * 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 * publishhed by the Free Software Foundation. * * Copyright (C) 2012 John Crispin */ #include #include #include #include #include #include #include #include #include #include "pinctrl-lantiq.h" #include /* we have 3 1/2 banks of 16 bit each */ #define PINS 16 #define PORT3 3 #define PORT(x) (x / PINS) #define PORT_PIN(x) (x % PINS) /* we have 2 mux bits that can be set for each pin */ #define MUX_ALT0 0x1 #define MUX_ALT1 0x2 /* * each bank has this offset apart from the 1/2 bank that is mixed into the * other 3 ranges */ #define REG_OFF 0x30 /* these are the offsets to our registers */ #define GPIO_BASE(p) (REG_OFF * PORT(p)) #define GPIO_OUT(p) GPIO_BASE(p) #define GPIO_IN(p) (GPIO_BASE(p) + 0x04) #define GPIO_DIR(p) (GPIO_BASE(p) + 0x08) #define GPIO_ALT0(p) (GPIO_BASE(p) + 0x0C) #define GPIO_ALT1(p) (GPIO_BASE(p) + 0x10) #define GPIO_OD(p) (GPIO_BASE(p) + 0x14) #define GPIO_PUDSEL(p) (GPIO_BASE(p) + 0x1c) #define GPIO_PUDEN(p) (GPIO_BASE(p) + 0x20) /* the 1/2 port needs special offsets for some registers */ #define GPIO3_OD (GPIO_BASE(0) + 0x24) #define GPIO3_PUDSEL (GPIO_BASE(0) + 0x28) #define GPIO3_PUDEN (GPIO_BASE(0) + 0x2C) #define GPIO3_ALT1 (GPIO_BASE(PINS) + 0x24) /* macros to help us access the registers */ #define gpio_getbit(m, r, p) (!!(ltq_r32(m + r) & BIT(p))) #define gpio_setbit(m, r, p) ltq_w32_mask(0, BIT(p), m + r) #define gpio_clearbit(m, r, p) ltq_w32_mask(BIT(p), 0, m + r) #define MFP_XWAY(a, f0, f1, f2, f3) \ { \ .name = #a, \ .pin = a, \ .func = { \ XWAY_MUX_##f0, \ XWAY_MUX_##f1, \ XWAY_MUX_##f2, \ XWAY_MUX_##f3, \ }, \ } #define GRP_MUX(a, m, p) \ { .name = a, .mux = XWAY_MUX_##m, .pins = p, .npins = ARRAY_SIZE(p), } #define FUNC_MUX(f, m) \ { .func = f, .mux = XWAY_MUX_##m, } #define XWAY_MAX_PIN 32 #define XR9_MAX_PIN 56 enum xway_mux { XWAY_MUX_GPIO = 0, XWAY_MUX_SPI, XWAY_MUX_ASC, XWAY_MUX_PCI, XWAY_MUX_CGU, XWAY_MUX_EBU, XWAY_MUX_JTAG, XWAY_MUX_EXIN, XWAY_MUX_TDM, XWAY_MUX_STP, XWAY_MUX_SIN, XWAY_MUX_GPT, XWAY_MUX_NMI, XWAY_MUX_MDIO, XWAY_MUX_MII, XWAY_MUX_EPHY, XWAY_MUX_DFE, XWAY_MUX_SDIO, XWAY_MUX_NONE = 0xffff, }; static const struct ltq_mfp_pin xway_mfp[] = { /* pin f0 f1 f2 f3 */ MFP_XWAY(GPIO0, GPIO, EXIN, NONE, TDM), MFP_XWAY(GPIO1, GPIO, EXIN, NONE, NONE), MFP_XWAY(GPIO2, GPIO, CGU, EXIN, NONE), MFP_XWAY(GPIO3, GPIO, CGU, NONE, PCI), MFP_XWAY(GPIO4, GPIO, STP, NONE, ASC), MFP_XWAY(GPIO5, GPIO, STP, NONE, NONE), MFP_XWAY(GPIO6, GPIO, STP, GPT, ASC), MFP_XWAY(GPIO7, GPIO, CGU, PCI, NONE), MFP_XWAY(GPIO8, GPIO, CGU, NMI, NONE), MFP_XWAY(GPIO9, GPIO, ASC, SPI, EXIN), MFP_XWAY(GPIO10, GPIO, ASC, SPI, NONE), MFP_XWAY(GPIO11, GPIO, ASC, PCI, SPI), MFP_XWAY(GPIO12, GPIO, ASC, NONE, NONE), MFP_XWAY(GPIO13, GPIO, EBU, SPI, NONE), MFP_XWAY(GPIO14, GPIO, CGU, PCI, NONE), MFP_XWAY(GPIO15, GPIO, SPI, JTAG, NONE), MFP_XWAY(GPIO16, GPIO, SPI, NONE, JTAG), MFP_XWAY(GPIO17, GPIO, SPI, NONE, JTAG), MFP_XWAY(GPIO18, GPIO, SPI, NONE, JTAG), MFP_XWAY(GPIO19, GPIO, PCI, NONE, NONE), MFP_XWAY(GPIO20, GPIO, JTAG, NONE, NONE), MFP_XWAY(GPIO21, GPIO, PCI, EBU, GPT), MFP_XWAY(GPIO22, GPIO, SPI, NONE, NONE), MFP_XWAY(GPIO23, GPIO, EBU, PCI, STP), MFP_XWAY(GPIO24, GPIO, EBU, TDM, PCI), MFP_XWAY(GPIO25, GPIO, TDM, NONE, ASC), MFP_XWAY(GPIO26, GPIO, EBU, NONE, TDM), MFP_XWAY(GPIO27, GPIO, TDM, NONE, ASC), MFP_XWAY(GPIO28, GPIO, GPT, NONE, NONE), MFP_XWAY(GPIO29, GPIO, PCI, NONE, NONE), MFP_XWAY(GPIO30, GPIO, PCI, NONE, NONE), MFP_XWAY(GPIO31, GPIO, EBU, PCI, NONE), MFP_XWAY(GPIO32, GPIO, NONE, NONE, EBU), MFP_XWAY(GPIO33, GPIO, NONE, NONE, EBU), MFP_XWAY(GPIO34, GPIO, NONE, NONE, EBU), MFP_XWAY(GPIO35, GPIO, NONE, NONE, EBU), MFP_XWAY(GPIO36, GPIO, SIN, NONE, EBU), MFP_XWAY(GPIO37, GPIO, PCI, NONE, NONE), MFP_XWAY(GPIO38, GPIO, PCI, NONE, NONE), MFP_XWAY(GPIO39, GPIO, EXIN, NONE, NONE), MFP_XWAY(GPIO40, GPIO, NONE, NONE, NONE), MFP_XWAY(GPIO41, GPIO, NONE, NONE, NONE), MFP_XWAY(GPIO42, GPIO, MDIO, NONE, NONE), MFP_XWAY(GPIO43, GPIO, MDIO, NONE, NONE), MFP_XWAY(GPIO44, GPIO, NONE, NONE, SIN), MFP_XWAY(GPIO45, GPIO, NONE, NONE, SIN), MFP_XWAY(GPIO46, GPIO, NONE, NONE, EXIN), MFP_XWAY(GPIO47, GPIO, NONE, NONE, SIN), MFP_XWAY(GPIO48, GPIO, EBU, NONE, NONE), MFP_XWAY(GPIO49, GPIO, EBU, NONE, NONE), MFP_XWAY(GPIO50, GPIO, NONE, NONE, NONE), MFP_XWAY(GPIO51, GPIO, NONE, NONE, NONE), MFP_XWAY(GPIO52, GPIO, NONE, NONE, NONE), MFP_XWAY(GPIO53, GPIO, NONE, NONE, NONE), MFP_XWAY(GPIO54, GPIO, NONE, NONE, NONE), MFP_XWAY(GPIO55, GPIO, NONE, NONE, NONE), }; static const struct ltq_mfp_pin ase_mfp[] = { /* pin f0 f1 f2 f3 */ MFP_XWAY(GPIO0, GPIO, EXIN, MII, TDM), MFP_XWAY(GPIO1, GPIO, STP, DFE, EBU), MFP_XWAY(GPIO2, GPIO, STP, DFE, EPHY), MFP_XWAY(GPIO3, GPIO, STP, EPHY, EBU), MFP_XWAY(GPIO4, GPIO, GPT, EPHY, MII), MFP_XWAY(GPIO5, GPIO, MII, ASC, GPT), MFP_XWAY(GPIO6, GPIO, MII, ASC, EXIN), MFP_XWAY(GPIO7, GPIO, SPI, MII, JTAG), MFP_XWAY(GPIO8, GPIO, SPI, MII, JTAG), MFP_XWAY(GPIO9, GPIO, SPI, MII, JTAG), MFP_XWAY(GPIO10, GPIO, SPI, MII, JTAG), MFP_XWAY(GPIO11, GPIO, EBU, CGU, JTAG), MFP_XWAY(GPIO12, GPIO, EBU, MII, SDIO), MFP_XWAY(GPIO13, GPIO, EBU, MII, CGU), MFP_XWAY(GPIO14, GPIO, EBU, SPI, CGU), MFP_XWAY(GPIO15, GPIO, EBU, SPI, SDIO), MFP_XWAY(GPIO16, GPIO, NONE, NONE, NONE), MFP_XWAY(GPIO17, GPIO, NONE, NONE, NONE), MFP_XWAY(GPIO18, GPIO, NONE, NONE, NONE), MFP_XWAY(GPIO19, GPIO, EBU, MII, SDIO), MFP_XWAY(GPIO20, GPIO, EBU, MII, SDIO), MFP_XWAY(GPIO21, GPIO, EBU, MII, SDIO), MFP_XWAY(GPIO22, GPIO, EBU, MII, CGU), MFP_XWAY(GPIO23, GPIO, EBU, MII, CGU), MFP_XWAY(GPIO24, GPIO, EBU, NONE, MII), MFP_XWAY(GPIO25, GPIO, EBU, MII, GPT), MFP_XWAY(GPIO26, GPIO, EBU, MII, SDIO), MFP_XWAY(GPIO27, GPIO, EBU, NONE, MII), MFP_XWAY(GPIO28, GPIO, MII, EBU, SDIO), MFP_XWAY(GPIO29, GPIO, EBU, MII, EXIN), MFP_XWAY(GPIO30, GPIO, NONE, NONE, NONE), MFP_XWAY(GPIO31, GPIO, NONE, NONE, NONE), }; static const unsigned pins_jtag[] = {GPIO15, GPIO16, GPIO17, GPIO19, GPIO35}; static const unsigned pins_asc0[] = {GPIO11, GPIO12}; static const unsigned pins_asc0_cts_rts[] = {GPIO9, GPIO10}; static const unsigned pins_stp[] = {GPIO4, GPIO5, GPIO6}; static const unsigned pins_nmi[] = {GPIO8}; static const unsigned pins_mdio[] = {GPIO42, GPIO43}; static const unsigned pins_ebu_a24[] = {GPIO13}; static const unsigned pins_ebu_clk[] = {GPIO21}; static const unsigned pins_ebu_cs1[] = {GPIO23}; static const unsigned pins_ebu_a23[] = {GPIO24}; static const unsigned pins_ebu_wait[] = {GPIO26}; static const unsigned pins_ebu_a25[] = {GPIO31}; static const unsigned pins_ebu_rdy[] = {GPIO48}; static const unsigned pins_ebu_rd[] = {GPIO49}; static const unsigned pins_nand_ale[] = {GPIO13}; static const unsigned pins_nand_cs1[] = {GPIO23}; static const unsigned pins_nand_cle[] = {GPIO24}; static const unsigned pins_nand_rdy[] = {GPIO48}; static const unsigned pins_nand_rd[] = {GPIO49}; static const unsigned pins_exin0[] = {GPIO0}; static const unsigned pins_exin1[] = {GPIO1}; static const unsigned pins_exin2[] = {GPIO2}; static const unsigned pins_exin3[] = {GPIO39}; static const unsigned pins_exin4[] = {GPIO46}; static const unsigned pins_exin5[] = {GPIO9}; static const unsigned pins_spi[] = {GPIO16, GPIO17, GPIO18}; static const unsigned pins_spi_cs1[] = {GPIO15}; static const unsigned pins_spi_cs2[] = {GPIO21}; static const unsigned pins_spi_cs3[] = {GPIO13}; static const unsigned pins_spi_cs4[] = {GPIO10}; static const unsigned pins_spi_cs5[] = {GPIO9}; static const unsigned pins_spi_cs6[] = {GPIO11}; static const unsigned pins_gpt1[] = {GPIO28}; static const unsigned pins_gpt2[] = {GPIO21}; static const unsigned pins_gpt3[] = {GPIO6}; static const unsigned pins_clkout0[] = {GPIO8}; static const unsigned pins_clkout1[] = {GPIO7}; static const unsigned pins_clkout2[] = {GPIO3}; static const unsigned pins_clkout3[] = {GPIO2}; static const unsigned pins_pci_gnt1[] = {GPIO30}; static const unsigned pins_pci_gnt2[] = {GPIO23}; static const unsigned pins_pci_gnt3[] = {GPIO19}; static const unsigned pins_pci_gnt4[] = {GPIO38}; static const unsigned pins_pci_req1[] = {GPIO29}; static const unsigned pins_pci_req2[] = {GPIO31}; static const unsigned pins_pci_req3[] = {GPIO3}; static const unsigned pins_pci_req4[] = {GPIO37}; static const unsigned ase_pins_jtag[] = {GPIO7, GPIO8, GPIO9, GPIO10, GPIO11}; static const unsigned ase_pins_asc[] = {GPIO5, GPIO6}; static const unsigned ase_pins_stp[] = {GPIO1, GPIO2, GPIO3}; static const unsigned ase_pins_ephy[] = {GPIO2, GPIO3, GPIO4}; static const unsigned ase_pins_dfe[] = {GPIO1, GPIO2}; static const unsigned ase_pins_spi[] = {GPIO8, GPIO9, GPIO10}; static const unsigned ase_pins_spi_cs1[] = {GPIO7}; static const unsigned ase_pins_spi_cs2[] = {GPIO15}; static const unsigned ase_pins_spi_cs3[] = {GPIO14}; static const unsigned ase_pins_exin0[] = {GPIO6}; static const unsigned ase_pins_exin1[] = {GPIO29}; static const unsigned ase_pins_exin2[] = {GPIO0}; static const unsigned ase_pins_gpt1[] = {GPIO5}; static const unsigned ase_pins_gpt2[] = {GPIO4}; static const unsigned ase_pins_gpt3[] = {GPIO25}; static const struct ltq_pin_group xway_grps[] = { GRP_MUX("exin0", EXIN, pins_exin0), GRP_MUX("exin1", EXIN, pins_exin1), GRP_MUX("exin2", EXIN, pins_exin2), GRP_MUX("jtag", JTAG, pins_jtag), GRP_MUX("ebu a23", EBU, pins_ebu_a23), GRP_MUX("ebu a24", EBU, pins_ebu_a24), GRP_MUX("ebu a25", EBU, pins_ebu_a25), GRP_MUX("ebu clk", EBU, pins_ebu_clk), GRP_MUX("ebu cs1", EBU, pins_ebu_cs1), GRP_MUX("ebu wait", EBU, pins_ebu_wait), GRP_MUX("nand ale", EBU, pins_nand_ale), GRP_MUX("nand cs1", EBU, pins_nand_cs1), GRP_MUX("nand cle", EBU, pins_nand_cle), GRP_MUX("spi", SPI, pins_spi), GRP_MUX("spi_cs1", SPI, pins_spi_cs1), GRP_MUX("spi_cs2", SPI, pins_spi_cs2), GRP_MUX("spi_cs3", SPI, pins_spi_cs3), GRP_MUX("spi_cs4", SPI, pins_spi_cs4), GRP_MUX("spi_cs5", SPI, pins_spi_cs5), GRP_MUX("spi_cs6", SPI, pins_spi_cs6), GRP_MUX("asc0", ASC, pins_asc0), GRP_MUX("asc0 cts rts", ASC, pins_asc0_cts_rts), GRP_MUX("stp", STP, pins_stp), GRP_MUX("nmi", NMI, pins_nmi), GRP_MUX("gpt1", GPT, pins_gpt1), GRP_MUX("gpt2", GPT, pins_gpt2), GRP_MUX("gpt3", GPT, pins_gpt3), GRP_MUX("clkout0", CGU, pins_clkout0), GRP_MUX("clkout1", CGU, pins_clkout1), GRP_MUX("clkout2", CGU, pins_clkout2), GRP_MUX("clkout3", CGU, pins_clkout3), GRP_MUX("gnt1", PCI, pins_pci_gnt1), GRP_MUX("gnt2", PCI, pins_pci_gnt2), GRP_MUX("gnt3", PCI, pins_pci_gnt3), GRP_MUX("req1", PCI, pins_pci_req1), GRP_MUX("req2", PCI, pins_pci_req2), GRP_MUX("req3", PCI, pins_pci_req3), /* xrx only */ GRP_MUX("nand rdy", EBU, pins_nand_rdy), GRP_MUX("nand rd", EBU, pins_nand_rd), GRP_MUX("exin3", EXIN, pins_exin3), GRP_MUX("exin4", EXIN, pins_exin4), GRP_MUX("exin5", EXIN, pins_exin5), GRP_MUX("gnt4", PCI, pins_pci_gnt4), GRP_MUX("req4", PCI, pins_pci_gnt4), GRP_MUX("mdio", MDIO, pins_mdio), }; static const struct ltq_pin_group ase_grps[] = { GRP_MUX("exin0", EXIN, ase_pins_exin0), GRP_MUX("exin1", EXIN, ase_pins_exin1), GRP_MUX("exin2", EXIN, ase_pins_exin2), GRP_MUX("jtag", JTAG, ase_pins_jtag), GRP_MUX("stp", STP, ase_pins_stp), GRP_MUX("asc", ASC, ase_pins_asc), GRP_MUX("gpt1", GPT, ase_pins_gpt1), GRP_MUX("gpt2", GPT, ase_pins_gpt2), GRP_MUX("gpt3", GPT, ase_pins_gpt3), GRP_MUX("ephy", EPHY, ase_pins_ephy), GRP_MUX("dfe", DFE, ase_pins_dfe), GRP_MUX("spi", SPI, ase_pins_spi), GRP_MUX("spi_cs1", SPI, ase_pins_spi_cs1), GRP_MUX("spi_cs2", SPI, ase_pins_spi_cs2), GRP_MUX("spi_cs3", SPI, ase_pins_spi_cs3), }; static const char * const xway_pci_grps[] = {"gnt1", "gnt2", "gnt3", "req1", "req2", "req3"}; static const char * const xway_spi_grps[] = {"spi", "spi_cs1", "spi_cs2", "spi_cs3", "spi_cs4", "spi_cs5", "spi_cs6"}; static const char * const xway_cgu_grps[] = {"clkout0", "clkout1", "clkout2", "clkout3"}; static const char * const xway_ebu_grps[] = {"ebu a23", "ebu a24", "ebu a25", "ebu cs1", "ebu wait", "ebu clk", "nand ale", "nand cs1", "nand cle"}; static const char * const xway_exin_grps[] = {"exin0", "exin1", "exin2"}; static const char * const xway_gpt_grps[] = {"gpt1", "gpt2", "gpt3"}; static const char * const xway_asc_grps[] = {"asc0", "asc0 cts rts"}; static const char * const xway_jtag_grps[] = {"jtag"}; static const char * const xway_stp_grps[] = {"stp"}; static const char * const xway_nmi_grps[] = {"nmi"}; /* ar9/vr9/gr9 */ static const char * const xrx_mdio_grps[] = {"mdio"}; static const char * const xrx_ebu_grps[] = {"ebu a23", "ebu a24", "ebu a25", "ebu cs1", "ebu wait", "ebu clk", "nand ale", "nand cs1", "nand cle", "nand rdy", "nand rd"}; static const char * const xrx_exin_grps[] = {"exin0", "exin1", "exin2", "exin3", "exin4", "exin5"}; static const char * const xrx_pci_grps[] = {"gnt1", "gnt2", "gnt3", "gnt4", "req1", "req2", "req3", "req4"}; /* ase */ static const char * const ase_exin_grps[] = {"exin0", "exin1", "exin2"}; static const char * const ase_gpt_grps[] = {"gpt1", "gpt2", "gpt3"}; static const char * const ase_dfe_grps[] = {"dfe"}; static const char * const ase_ephy_grps[] = {"ephy"}; static const char * const ase_asc_grps[] = {"asc"}; static const char * const ase_jtag_grps[] = {"jtag"}; static const char * const ase_stp_grps[] = {"stp"}; static const char * const ase_spi_grps[] = {"spi", "spi_cs1", "spi_cs2", "spi_cs3"}; static const struct ltq_pmx_func danube_funcs[] = { {"spi", ARRAY_AND_SIZE(xway_spi_grps)}, {"asc", ARRAY_AND_SIZE(xway_asc_grps)}, {"cgu", ARRAY_AND_SIZE(xway_cgu_grps)}, {"jtag", ARRAY_AND_SIZE(xway_jtag_grps)}, {"exin", ARRAY_AND_SIZE(xway_exin_grps)}, {"stp", ARRAY_AND_SIZE(xway_stp_grps)}, {"gpt", ARRAY_AND_SIZE(xway_gpt_grps)}, {"nmi", ARRAY_AND_SIZE(xway_nmi_grps)}, {"pci", ARRAY_AND_SIZE(xway_pci_grps)}, {"ebu", ARRAY_AND_SIZE(xway_ebu_grps)}, }; static const struct ltq_pmx_func xrx_funcs[] = { {"spi", ARRAY_AND_SIZE(xway_spi_grps)}, {"asc", ARRAY_AND_SIZE(xway_asc_grps)}, {"cgu", ARRAY_AND_SIZE(xway_cgu_grps)}, {"jtag", ARRAY_AND_SIZE(xway_jtag_grps)}, {"exin", ARRAY_AND_SIZE(xrx_exin_grps)}, {"stp", ARRAY_AND_SIZE(xway_stp_grps)}, {"gpt", ARRAY_AND_SIZE(xway_gpt_grps)}, {"nmi", ARRAY_AND_SIZE(xway_nmi_grps)}, {"pci", ARRAY_AND_SIZE(xrx_pci_grps)}, {"ebu", ARRAY_AND_SIZE(xrx_ebu_grps)}, {"mdio", ARRAY_AND_SIZE(xrx_mdio_grps)}, }; static const struct ltq_pmx_func ase_funcs[] = { {"spi", ARRAY_AND_SIZE(ase_spi_grps)}, {"asc", ARRAY_AND_SIZE(ase_asc_grps)}, {"jtag", ARRAY_AND_SIZE(ase_jtag_grps)}, {"exin", ARRAY_AND_SIZE(ase_exin_grps)}, {"stp", ARRAY_AND_SIZE(ase_stp_grps)}, {"gpt", ARRAY_AND_SIZE(ase_gpt_grps)}, {"ephy", ARRAY_AND_SIZE(ase_ephy_grps)}, {"dfe", ARRAY_AND_SIZE(ase_dfe_grps)}, }; /* --------- pinconf related code --------- */ static int xway_pinconf_get(struct pinctrl_dev *pctldev, unsigned pin, unsigned long *config) { struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctldev); enum ltq_pinconf_param param = LTQ_PINCONF_UNPACK_PARAM(*config); int port = PORT(pin); u32 reg; switch (param) { case LTQ_PINCONF_PARAM_OPEN_DRAIN: if (port == PORT3) reg = GPIO3_OD; else reg = GPIO_OD(pin); *config = LTQ_PINCONF_PACK(param, !gpio_getbit(info->membase[0], reg, PORT_PIN(pin))); break; case LTQ_PINCONF_PARAM_PULL: if (port == PORT3) reg = GPIO3_PUDEN; else reg = GPIO_PUDEN(pin); if (!gpio_getbit(info->membase[0], reg, PORT_PIN(pin))) { *config = LTQ_PINCONF_PACK(param, 0); break; } if (port == PORT3) reg = GPIO3_PUDSEL; else reg = GPIO_PUDSEL(pin); if (!gpio_getbit(info->membase[0], reg, PORT_PIN(pin))) *config = LTQ_PINCONF_PACK(param, 2); else *config = LTQ_PINCONF_PACK(param, 1); break; default: dev_err(pctldev->dev, "Invalid config param %04x\n", param); return -ENOTSUPP; } return 0; } static int xway_pinconf_set(struct pinctrl_dev *pctldev, unsigned pin, unsigned long config) { struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctldev); enum ltq_pinconf_param param = LTQ_PINCONF_UNPACK_PARAM(config); int arg = LTQ_PINCONF_UNPACK_ARG(config); int port = PORT(pin); u32 reg; switch (param) { case LTQ_PINCONF_PARAM_OPEN_DRAIN: if (port == PORT3) reg = GPIO3_OD; else reg = GPIO_OD(pin); gpio_setbit(info->membase[0], reg, PORT_PIN(pin)); break; case LTQ_PINCONF_PARAM_PULL: if (port == PORT3) reg = GPIO3_PUDEN; else reg = GPIO_PUDEN(pin); if (arg == 0) { gpio_clearbit(info->membase[0], reg, PORT_PIN(pin)); break; } gpio_setbit(info->membase[0], reg, PORT_PIN(pin)); if (port == PORT3) reg = GPIO3_PUDSEL; else reg = GPIO_PUDSEL(pin); if (arg == 1) gpio_clearbit(info->membase[0], reg, PORT_PIN(pin)); else if (arg == 2) gpio_setbit(info->membase[0], reg, PORT_PIN(pin)); else dev_err(pctldev->dev, "Invalid pull value %d\n", arg); break; default: dev_err(pctldev->dev, "Invalid config param %04x\n", param); return -ENOTSUPP; } return 0; } int xway_pinconf_group_set(struct pinctrl_dev *pctldev, unsigned selector, unsigned long config) { struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctldev); int i, ret = 0; for (i = 0; i < info->grps[selector].npins && !ret; i++) ret = xway_pinconf_set(pctldev, info->grps[selector].pins[i], config); return ret; } static struct pinconf_ops xway_pinconf_ops = { .pin_config_get = xway_pinconf_get, .pin_config_set = xway_pinconf_set, .pin_config_group_set = xway_pinconf_group_set, }; static struct pinctrl_desc xway_pctrl_desc = { .owner = THIS_MODULE, .confops = &xway_pinconf_ops, }; static inline int xway_mux_apply(struct pinctrl_dev *pctrldev, int pin, int mux) { struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev); int port = PORT(pin); u32 alt1_reg = GPIO_ALT1(pin); if (port == PORT3) alt1_reg = GPIO3_ALT1; if (mux & MUX_ALT0) gpio_setbit(info->membase[0], GPIO_ALT0(pin), PORT_PIN(pin)); else gpio_clearbit(info->membase[0], GPIO_ALT0(pin), PORT_PIN(pin)); if (mux & MUX_ALT1) gpio_setbit(info->membase[0], alt1_reg, PORT_PIN(pin)); else gpio_clearbit(info->membase[0], alt1_reg, PORT_PIN(pin)); return 0; } static const struct ltq_cfg_param xway_cfg_params[] = { {"lantiq,pull", LTQ_PINCONF_PARAM_PULL}, {"lantiq,open-drain", LTQ_PINCONF_PARAM_OPEN_DRAIN}, }; static struct ltq_pinmux_info xway_info = { .desc = &xway_pctrl_desc, .apply_mux = xway_mux_apply, .params = xway_cfg_params, .num_params = ARRAY_SIZE(xway_cfg_params), }; /* --------- gpio_chip related code --------- */ static void xway_gpio_set(struct gpio_chip *chip, unsigned int pin, int val) { struct ltq_pinmux_info *info = dev_get_drvdata(chip->dev); if (val) gpio_setbit(info->membase[0], GPIO_OUT(pin), PORT_PIN(pin)); else gpio_clearbit(info->membase[0], GPIO_OUT(pin), PORT_PIN(pin)); } static int xway_gpio_get(struct gpio_chip *chip, unsigned int pin) { struct ltq_pinmux_info *info = dev_get_drvdata(chip->dev); return gpio_getbit(info->membase[0], GPIO_IN(pin), PORT_PIN(pin)); } static int xway_gpio_dir_in(struct gpio_chip *chip, unsigned int pin) { struct ltq_pinmux_info *info = dev_get_drvdata(chip->dev); gpio_clearbit(info->membase[0], GPIO_DIR(pin), PORT_PIN(pin)); return 0; } static int xway_gpio_dir_out(struct gpio_chip *chip, unsigned int pin, int val) { struct ltq_pinmux_info *info = dev_get_drvdata(chip->dev); gpio_setbit(info->membase[0], GPIO_DIR(pin), PORT_PIN(pin)); xway_gpio_set(chip, pin, val); return 0; } static int xway_gpio_req(struct gpio_chip *chip, unsigned offset) { int gpio = chip->base + offset; return pinctrl_request_gpio(gpio); } static void xway_gpio_free(struct gpio_chip *chip, unsigned offset) { int gpio = chip->base + offset; pinctrl_free_gpio(gpio); } static struct gpio_chip xway_chip = { .label = "gpio-xway", .direction_input = xway_gpio_dir_in, .direction_output = xway_gpio_dir_out, .get = xway_gpio_get, .set = xway_gpio_set, .request = xway_gpio_req, .free = xway_gpio_free, .base = -1, }; /* --------- register the pinctrl layer --------- */ static const unsigned xway_exin_pin_map[] = {GPIO0, GPIO1, GPIO2, GPIO39, GPIO46, GPIO9}; static const unsigned ase_exin_pins_map[] = {GPIO6, GPIO29, GPIO0}; static struct pinctrl_xway_soc { int pin_count; const struct ltq_mfp_pin *mfp; const struct ltq_pin_group *grps; unsigned int num_grps; const struct ltq_pmx_func *funcs; unsigned int num_funcs; const unsigned *exin; unsigned int num_exin; } soc_cfg[] = { /* legacy xway */ {XWAY_MAX_PIN, xway_mfp, xway_grps, ARRAY_SIZE(xway_grps), danube_funcs, ARRAY_SIZE(danube_funcs), xway_exin_pin_map, 3}, /* xway xr9 series */ {XR9_MAX_PIN, xway_mfp, xway_grps, ARRAY_SIZE(xway_grps), xrx_funcs, ARRAY_SIZE(xrx_funcs), xway_exin_pin_map, 6}, /* xway ase series */ {XWAY_MAX_PIN, ase_mfp, ase_grps, ARRAY_SIZE(ase_grps), ase_funcs, ARRAY_SIZE(ase_funcs), ase_exin_pins_map, 3}, }; static struct pinctrl_gpio_range xway_gpio_range = { .name = "XWAY GPIO", .gc = &xway_chip, }; static const struct of_device_id xway_match[] = { { .compatible = "lantiq,pinctrl-xway", .data = &soc_cfg[0]}, { .compatible = "lantiq,pinctrl-xr9", .data = &soc_cfg[1]}, { .compatible = "lantiq,pinctrl-ase", .data = &soc_cfg[2]}, {}, }; MODULE_DEVICE_TABLE(of, xway_match); static int pinmux_xway_probe(struct platform_device *pdev) { const struct of_device_id *match; const struct pinctrl_xway_soc *xway_soc; struct resource *res; int ret, i; /* get and remap our register range */ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) { dev_err(&pdev->dev, "Failed to get resource\n"); return -ENOENT; } xway_info.membase[0] = devm_request_and_ioremap(&pdev->dev, res); if (!xway_info.membase[0]) { dev_err(&pdev->dev, "Failed to remap resource\n"); return -ENOMEM; } match = of_match_device(xway_match, &pdev->dev); if (match) xway_soc = (const struct pinctrl_xway_soc *) match->data; else xway_soc = &soc_cfg[0]; /* find out how many pads we have */ xway_chip.ngpio = xway_soc->pin_count; /* load our pad descriptors */ xway_info.pads = devm_kzalloc(&pdev->dev, sizeof(struct pinctrl_pin_desc) * xway_chip.ngpio, GFP_KERNEL); if (!xway_info.pads) { dev_err(&pdev->dev, "Failed to allocate pads\n"); return -ENOMEM; } for (i = 0; i < xway_chip.ngpio; i++) { /* strlen("ioXY") + 1 = 5 */ char *name = devm_kzalloc(&pdev->dev, 5, GFP_KERNEL); if (!name) { dev_err(&pdev->dev, "Failed to allocate pad name\n"); return -ENOMEM; } snprintf(name, 5, "io%d", i); xway_info.pads[i].number = GPIO0 + i; xway_info.pads[i].name = name; } xway_pctrl_desc.pins = xway_info.pads; /* load the gpio chip */ xway_chip.dev = &pdev->dev; of_gpiochip_add(&xway_chip); ret = gpiochip_add(&xway_chip); if (ret) { dev_err(&pdev->dev, "Failed to register gpio chip\n"); return ret; } /* setup the data needed by pinctrl */ xway_pctrl_desc.name = dev_name(&pdev->dev); xway_pctrl_desc.npins = xway_chip.ngpio; xway_info.num_pads = xway_chip.ngpio; xway_info.num_mfp = xway_chip.ngpio; xway_info.mfp = xway_soc->mfp; xway_info.grps = xway_soc->grps; xway_info.num_grps = xway_soc->num_grps; xway_info.funcs = xway_soc->funcs; xway_info.num_funcs = xway_soc->num_funcs; xway_info.exin = xway_soc->exin; xway_info.num_exin = xway_soc->num_exin; /* register with the generic lantiq layer */ ret = ltq_pinctrl_register(pdev, &xway_info); if (ret) { dev_err(&pdev->dev, "Failed to register pinctrl driver\n"); return ret; } /* finish with registering the gpio range in pinctrl */ xway_gpio_range.npins = xway_chip.ngpio; xway_gpio_range.base = xway_chip.base; pinctrl_add_gpio_range(xway_info.pctrl, &xway_gpio_range); dev_info(&pdev->dev, "Init done\n"); return 0; } static struct platform_driver pinmux_xway_driver = { .probe = pinmux_xway_probe, .driver = { .name = "pinctrl-xway", .owner = THIS_MODULE, .of_match_table = xway_match, }, }; static int __init pinmux_xway_init(void) { return platform_driver_register(&pinmux_xway_driver); } core_initcall_sync(pinmux_xway_init);