| /* |
| * 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 <blogic@openwrt.org> |
| */ |
| |
| #include <linux/err.h> |
| #include <linux/slab.h> |
| #include <linux/module.h> |
| #include <linux/of_platform.h> |
| #include <linux/of_address.h> |
| #include <linux/of_gpio.h> |
| #include <linux/ioport.h> |
| #include <linux/io.h> |
| #include <linux/device.h> |
| #include <linux/platform_device.h> |
| |
| #include "pinctrl-lantiq.h" |
| |
| #include <lantiq_soc.h> |
| |
| /* 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_GPHY, |
| 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, GPHY), |
| MFP_XWAY(GPIO3, GPIO, CGU, NONE, PCI), |
| MFP_XWAY(GPIO4, GPIO, STP, NONE, ASC), |
| MFP_XWAY(GPIO5, GPIO, STP, NONE, GPHY), |
| MFP_XWAY(GPIO6, GPIO, STP, GPT, ASC), |
| MFP_XWAY(GPIO7, GPIO, CGU, PCI, GPHY), |
| 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, GPHY, SIN), |
| MFP_XWAY(GPIO45, GPIO, NONE, GPHY, SIN), |
| MFP_XWAY(GPIO46, GPIO, NONE, NONE, EXIN), |
| MFP_XWAY(GPIO47, GPIO, NONE, GPHY, 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_gphy0_led0[] = {GPIO5}; |
| static const unsigned pins_gphy0_led1[] = {GPIO7}; |
| static const unsigned pins_gphy0_led2[] = {GPIO2}; |
| static const unsigned pins_gphy1_led0[] = {GPIO44}; |
| static const unsigned pins_gphy1_led1[] = {GPIO45}; |
| static const unsigned pins_gphy1_led2[] = {GPIO47}; |
| |
| 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), |
| GRP_MUX("gphy0 led0", GPHY, pins_gphy0_led0), |
| GRP_MUX("gphy0 led1", GPHY, pins_gphy0_led1), |
| GRP_MUX("gphy0 led2", GPHY, pins_gphy0_led2), |
| GRP_MUX("gphy1 led0", GPHY, pins_gphy1_led0), |
| GRP_MUX("gphy1 led1", GPHY, pins_gphy1_led1), |
| GRP_MUX("gphy1 led2", GPHY, pins_gphy1_led2), |
| }; |
| |
| 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_gphy_grps[] = {"gphy0 led0", "gphy0 led1", |
| "gphy0 led2", "gphy1 led0", |
| "gphy1 led1", "gphy1 led2"}; |
| 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)}, |
| {"gphy", ARRAY_AND_SIZE(xrx_gphy_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; |
| |
| case LTQ_PINCONF_PARAM_OUTPUT: |
| reg = GPIO_DIR(pin); |
| *config = LTQ_PINCONF_PACK(param, |
| gpio_getbit(info->membase[0], reg, PORT_PIN(pin))); |
| 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 *configs, |
| unsigned num_configs) |
| { |
| struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctldev); |
| enum ltq_pinconf_param param; |
| int arg; |
| int port = PORT(pin); |
| u32 reg; |
| int i; |
| |
| for (i = 0; i < num_configs; i++) { |
| param = LTQ_PINCONF_UNPACK_PARAM(configs[i]); |
| arg = LTQ_PINCONF_UNPACK_ARG(configs[i]); |
| |
| switch (param) { |
| case LTQ_PINCONF_PARAM_OPEN_DRAIN: |
| if (port == PORT3) |
| reg = GPIO3_OD; |
| else |
| reg = GPIO_OD(pin); |
| if (arg == 0) |
| gpio_setbit(info->membase[0], |
| reg, |
| PORT_PIN(pin)); |
| else |
| gpio_clearbit(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; |
| |
| case LTQ_PINCONF_PARAM_OUTPUT: |
| reg = GPIO_DIR(pin); |
| if (arg == 0) |
| gpio_clearbit(info->membase[0], |
| reg, |
| PORT_PIN(pin)); |
| else |
| gpio_setbit(info->membase[0], |
| reg, |
| PORT_PIN(pin)); |
| break; |
| |
| default: |
| dev_err(pctldev->dev, |
| "Invalid config param %04x\n", param); |
| return -ENOTSUPP; |
| } |
| } /* for each config */ |
| |
| return 0; |
| } |
| |
| int xway_pinconf_group_set(struct pinctrl_dev *pctldev, |
| unsigned selector, |
| unsigned long *configs, |
| unsigned num_configs) |
| { |
| 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], |
| configs, |
| num_configs); |
| |
| return ret; |
| } |
| |
| static const 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}, |
| {"lantiq,output", LTQ_PINCONF_PARAM_OUTPUT}, |
| }; |
| |
| 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); |
| xway_info.membase[0] = devm_ioremap_resource(&pdev->dev, res); |
| if (IS_ERR(xway_info.membase[0])) |
| return PTR_ERR(xway_info.membase[0]); |
| |
| 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); |
