837 lines
25 KiB
C
837 lines
25 KiB
C
/*
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* linux/drivers/pinctrl/pinmux-xway.c
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* based on linux/drivers/pinctrl/pinmux-pxa910.c
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* publishhed by the Free Software Foundation.
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*
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* Copyright (C) 2012 John Crispin <blogic@openwrt.org>
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*/
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#include <linux/err.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/of_platform.h>
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#include <linux/of_address.h>
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#include <linux/of_gpio.h>
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#include <linux/ioport.h>
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#include <linux/io.h>
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#include <linux/device.h>
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#include <linux/platform_device.h>
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#include "pinctrl-lantiq.h"
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#include <lantiq_soc.h>
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/* we have 3 1/2 banks of 16 bit each */
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#define PINS 16
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#define PORT3 3
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#define PORT(x) (x / PINS)
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#define PORT_PIN(x) (x % PINS)
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/* we have 2 mux bits that can be set for each pin */
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#define MUX_ALT0 0x1
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#define MUX_ALT1 0x2
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/*
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* each bank has this offset apart from the 1/2 bank that is mixed into the
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* other 3 ranges
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*/
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#define REG_OFF 0x30
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/* these are the offsets to our registers */
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#define GPIO_BASE(p) (REG_OFF * PORT(p))
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#define GPIO_OUT(p) GPIO_BASE(p)
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#define GPIO_IN(p) (GPIO_BASE(p) + 0x04)
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#define GPIO_DIR(p) (GPIO_BASE(p) + 0x08)
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#define GPIO_ALT0(p) (GPIO_BASE(p) + 0x0C)
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#define GPIO_ALT1(p) (GPIO_BASE(p) + 0x10)
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#define GPIO_OD(p) (GPIO_BASE(p) + 0x14)
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#define GPIO_PUDSEL(p) (GPIO_BASE(p) + 0x1c)
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#define GPIO_PUDEN(p) (GPIO_BASE(p) + 0x20)
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/* the 1/2 port needs special offsets for some registers */
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#define GPIO3_OD (GPIO_BASE(0) + 0x24)
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#define GPIO3_PUDSEL (GPIO_BASE(0) + 0x28)
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#define GPIO3_PUDEN (GPIO_BASE(0) + 0x2C)
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#define GPIO3_ALT1 (GPIO_BASE(PINS) + 0x24)
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/* macros to help us access the registers */
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#define gpio_getbit(m, r, p) (!!(ltq_r32(m + r) & BIT(p)))
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#define gpio_setbit(m, r, p) ltq_w32_mask(0, BIT(p), m + r)
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#define gpio_clearbit(m, r, p) ltq_w32_mask(BIT(p), 0, m + r)
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#define MFP_XWAY(a, f0, f1, f2, f3) \
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{ \
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.name = #a, \
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.pin = a, \
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.func = { \
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XWAY_MUX_##f0, \
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XWAY_MUX_##f1, \
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XWAY_MUX_##f2, \
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XWAY_MUX_##f3, \
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}, \
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}
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#define GRP_MUX(a, m, p) \
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{ .name = a, .mux = XWAY_MUX_##m, .pins = p, .npins = ARRAY_SIZE(p), }
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#define FUNC_MUX(f, m) \
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{ .func = f, .mux = XWAY_MUX_##m, }
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#define XWAY_MAX_PIN 32
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#define XR9_MAX_PIN 56
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enum xway_mux {
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XWAY_MUX_GPIO = 0,
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XWAY_MUX_SPI,
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XWAY_MUX_ASC,
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XWAY_MUX_PCI,
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XWAY_MUX_CGU,
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XWAY_MUX_EBU,
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XWAY_MUX_JTAG,
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XWAY_MUX_EXIN,
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XWAY_MUX_TDM,
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XWAY_MUX_STP,
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XWAY_MUX_SIN,
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XWAY_MUX_GPT,
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XWAY_MUX_NMI,
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XWAY_MUX_MDIO,
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XWAY_MUX_MII,
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XWAY_MUX_EPHY,
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XWAY_MUX_DFE,
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XWAY_MUX_SDIO,
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XWAY_MUX_GPHY,
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XWAY_MUX_NONE = 0xffff,
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};
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static const struct ltq_mfp_pin xway_mfp[] = {
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/* pin f0 f1 f2 f3 */
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MFP_XWAY(GPIO0, GPIO, EXIN, NONE, TDM),
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MFP_XWAY(GPIO1, GPIO, EXIN, NONE, NONE),
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MFP_XWAY(GPIO2, GPIO, CGU, EXIN, GPHY),
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MFP_XWAY(GPIO3, GPIO, CGU, NONE, PCI),
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MFP_XWAY(GPIO4, GPIO, STP, NONE, ASC),
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MFP_XWAY(GPIO5, GPIO, STP, NONE, GPHY),
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MFP_XWAY(GPIO6, GPIO, STP, GPT, ASC),
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MFP_XWAY(GPIO7, GPIO, CGU, PCI, GPHY),
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MFP_XWAY(GPIO8, GPIO, CGU, NMI, NONE),
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MFP_XWAY(GPIO9, GPIO, ASC, SPI, EXIN),
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MFP_XWAY(GPIO10, GPIO, ASC, SPI, NONE),
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MFP_XWAY(GPIO11, GPIO, ASC, PCI, SPI),
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MFP_XWAY(GPIO12, GPIO, ASC, NONE, NONE),
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MFP_XWAY(GPIO13, GPIO, EBU, SPI, NONE),
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MFP_XWAY(GPIO14, GPIO, CGU, PCI, NONE),
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MFP_XWAY(GPIO15, GPIO, SPI, JTAG, NONE),
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MFP_XWAY(GPIO16, GPIO, SPI, NONE, JTAG),
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MFP_XWAY(GPIO17, GPIO, SPI, NONE, JTAG),
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MFP_XWAY(GPIO18, GPIO, SPI, NONE, JTAG),
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MFP_XWAY(GPIO19, GPIO, PCI, NONE, NONE),
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MFP_XWAY(GPIO20, GPIO, JTAG, NONE, NONE),
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MFP_XWAY(GPIO21, GPIO, PCI, EBU, GPT),
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MFP_XWAY(GPIO22, GPIO, SPI, NONE, NONE),
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MFP_XWAY(GPIO23, GPIO, EBU, PCI, STP),
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MFP_XWAY(GPIO24, GPIO, EBU, TDM, PCI),
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MFP_XWAY(GPIO25, GPIO, TDM, NONE, ASC),
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MFP_XWAY(GPIO26, GPIO, EBU, NONE, TDM),
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MFP_XWAY(GPIO27, GPIO, TDM, NONE, ASC),
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MFP_XWAY(GPIO28, GPIO, GPT, NONE, NONE),
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MFP_XWAY(GPIO29, GPIO, PCI, NONE, NONE),
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MFP_XWAY(GPIO30, GPIO, PCI, NONE, NONE),
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MFP_XWAY(GPIO31, GPIO, EBU, PCI, NONE),
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MFP_XWAY(GPIO32, GPIO, NONE, NONE, EBU),
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MFP_XWAY(GPIO33, GPIO, NONE, NONE, EBU),
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MFP_XWAY(GPIO34, GPIO, NONE, NONE, EBU),
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MFP_XWAY(GPIO35, GPIO, NONE, NONE, EBU),
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MFP_XWAY(GPIO36, GPIO, SIN, NONE, EBU),
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MFP_XWAY(GPIO37, GPIO, PCI, NONE, NONE),
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MFP_XWAY(GPIO38, GPIO, PCI, NONE, NONE),
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MFP_XWAY(GPIO39, GPIO, EXIN, NONE, NONE),
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MFP_XWAY(GPIO40, GPIO, NONE, NONE, NONE),
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MFP_XWAY(GPIO41, GPIO, NONE, NONE, NONE),
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MFP_XWAY(GPIO42, GPIO, MDIO, NONE, NONE),
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MFP_XWAY(GPIO43, GPIO, MDIO, NONE, NONE),
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MFP_XWAY(GPIO44, GPIO, NONE, GPHY, SIN),
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MFP_XWAY(GPIO45, GPIO, NONE, GPHY, SIN),
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MFP_XWAY(GPIO46, GPIO, NONE, NONE, EXIN),
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MFP_XWAY(GPIO47, GPIO, NONE, GPHY, SIN),
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MFP_XWAY(GPIO48, GPIO, EBU, NONE, NONE),
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MFP_XWAY(GPIO49, GPIO, EBU, NONE, NONE),
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MFP_XWAY(GPIO50, GPIO, NONE, NONE, NONE),
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MFP_XWAY(GPIO51, GPIO, NONE, NONE, NONE),
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MFP_XWAY(GPIO52, GPIO, NONE, NONE, NONE),
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MFP_XWAY(GPIO53, GPIO, NONE, NONE, NONE),
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MFP_XWAY(GPIO54, GPIO, NONE, NONE, NONE),
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MFP_XWAY(GPIO55, GPIO, NONE, NONE, NONE),
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};
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static const struct ltq_mfp_pin ase_mfp[] = {
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/* pin f0 f1 f2 f3 */
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MFP_XWAY(GPIO0, GPIO, EXIN, MII, TDM),
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MFP_XWAY(GPIO1, GPIO, STP, DFE, EBU),
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MFP_XWAY(GPIO2, GPIO, STP, DFE, EPHY),
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MFP_XWAY(GPIO3, GPIO, STP, EPHY, EBU),
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MFP_XWAY(GPIO4, GPIO, GPT, EPHY, MII),
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MFP_XWAY(GPIO5, GPIO, MII, ASC, GPT),
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MFP_XWAY(GPIO6, GPIO, MII, ASC, EXIN),
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MFP_XWAY(GPIO7, GPIO, SPI, MII, JTAG),
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MFP_XWAY(GPIO8, GPIO, SPI, MII, JTAG),
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MFP_XWAY(GPIO9, GPIO, SPI, MII, JTAG),
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MFP_XWAY(GPIO10, GPIO, SPI, MII, JTAG),
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MFP_XWAY(GPIO11, GPIO, EBU, CGU, JTAG),
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MFP_XWAY(GPIO12, GPIO, EBU, MII, SDIO),
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MFP_XWAY(GPIO13, GPIO, EBU, MII, CGU),
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MFP_XWAY(GPIO14, GPIO, EBU, SPI, CGU),
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MFP_XWAY(GPIO15, GPIO, EBU, SPI, SDIO),
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MFP_XWAY(GPIO16, GPIO, NONE, NONE, NONE),
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MFP_XWAY(GPIO17, GPIO, NONE, NONE, NONE),
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MFP_XWAY(GPIO18, GPIO, NONE, NONE, NONE),
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MFP_XWAY(GPIO19, GPIO, EBU, MII, SDIO),
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MFP_XWAY(GPIO20, GPIO, EBU, MII, SDIO),
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MFP_XWAY(GPIO21, GPIO, EBU, MII, SDIO),
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MFP_XWAY(GPIO22, GPIO, EBU, MII, CGU),
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MFP_XWAY(GPIO23, GPIO, EBU, MII, CGU),
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MFP_XWAY(GPIO24, GPIO, EBU, NONE, MII),
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MFP_XWAY(GPIO25, GPIO, EBU, MII, GPT),
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MFP_XWAY(GPIO26, GPIO, EBU, MII, SDIO),
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MFP_XWAY(GPIO27, GPIO, EBU, NONE, MII),
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MFP_XWAY(GPIO28, GPIO, MII, EBU, SDIO),
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MFP_XWAY(GPIO29, GPIO, EBU, MII, EXIN),
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MFP_XWAY(GPIO30, GPIO, NONE, NONE, NONE),
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MFP_XWAY(GPIO31, GPIO, NONE, NONE, NONE),
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};
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static const unsigned pins_jtag[] = {GPIO15, GPIO16, GPIO17, GPIO19, GPIO35};
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static const unsigned pins_asc0[] = {GPIO11, GPIO12};
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static const unsigned pins_asc0_cts_rts[] = {GPIO9, GPIO10};
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static const unsigned pins_stp[] = {GPIO4, GPIO5, GPIO6};
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static const unsigned pins_nmi[] = {GPIO8};
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static const unsigned pins_mdio[] = {GPIO42, GPIO43};
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static const unsigned pins_gphy0_led0[] = {GPIO5};
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static const unsigned pins_gphy0_led1[] = {GPIO7};
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static const unsigned pins_gphy0_led2[] = {GPIO2};
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static const unsigned pins_gphy1_led0[] = {GPIO44};
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static const unsigned pins_gphy1_led1[] = {GPIO45};
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static const unsigned pins_gphy1_led2[] = {GPIO47};
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static const unsigned pins_ebu_a24[] = {GPIO13};
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static const unsigned pins_ebu_clk[] = {GPIO21};
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static const unsigned pins_ebu_cs1[] = {GPIO23};
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static const unsigned pins_ebu_a23[] = {GPIO24};
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static const unsigned pins_ebu_wait[] = {GPIO26};
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static const unsigned pins_ebu_a25[] = {GPIO31};
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static const unsigned pins_ebu_rdy[] = {GPIO48};
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static const unsigned pins_ebu_rd[] = {GPIO49};
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static const unsigned pins_nand_ale[] = {GPIO13};
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static const unsigned pins_nand_cs1[] = {GPIO23};
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static const unsigned pins_nand_cle[] = {GPIO24};
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static const unsigned pins_nand_rdy[] = {GPIO48};
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static const unsigned pins_nand_rd[] = {GPIO49};
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static const unsigned pins_exin0[] = {GPIO0};
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static const unsigned pins_exin1[] = {GPIO1};
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static const unsigned pins_exin2[] = {GPIO2};
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static const unsigned pins_exin3[] = {GPIO39};
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static const unsigned pins_exin4[] = {GPIO46};
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static const unsigned pins_exin5[] = {GPIO9};
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static const unsigned pins_spi[] = {GPIO16, GPIO17, GPIO18};
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static const unsigned pins_spi_cs1[] = {GPIO15};
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static const unsigned pins_spi_cs2[] = {GPIO21};
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static const unsigned pins_spi_cs3[] = {GPIO13};
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static const unsigned pins_spi_cs4[] = {GPIO10};
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static const unsigned pins_spi_cs5[] = {GPIO9};
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static const unsigned pins_spi_cs6[] = {GPIO11};
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static const unsigned pins_gpt1[] = {GPIO28};
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static const unsigned pins_gpt2[] = {GPIO21};
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static const unsigned pins_gpt3[] = {GPIO6};
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static const unsigned pins_clkout0[] = {GPIO8};
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static const unsigned pins_clkout1[] = {GPIO7};
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static const unsigned pins_clkout2[] = {GPIO3};
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static const unsigned pins_clkout3[] = {GPIO2};
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static const unsigned pins_pci_gnt1[] = {GPIO30};
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static const unsigned pins_pci_gnt2[] = {GPIO23};
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static const unsigned pins_pci_gnt3[] = {GPIO19};
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static const unsigned pins_pci_gnt4[] = {GPIO38};
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static const unsigned pins_pci_req1[] = {GPIO29};
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static const unsigned pins_pci_req2[] = {GPIO31};
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static const unsigned pins_pci_req3[] = {GPIO3};
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static const unsigned pins_pci_req4[] = {GPIO37};
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static const unsigned ase_pins_jtag[] = {GPIO7, GPIO8, GPIO9, GPIO10, GPIO11};
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static const unsigned ase_pins_asc[] = {GPIO5, GPIO6};
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static const unsigned ase_pins_stp[] = {GPIO1, GPIO2, GPIO3};
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static const unsigned ase_pins_ephy[] = {GPIO2, GPIO3, GPIO4};
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static const unsigned ase_pins_dfe[] = {GPIO1, GPIO2};
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static const unsigned ase_pins_spi[] = {GPIO8, GPIO9, GPIO10};
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static const unsigned ase_pins_spi_cs1[] = {GPIO7};
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static const unsigned ase_pins_spi_cs2[] = {GPIO15};
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static const unsigned ase_pins_spi_cs3[] = {GPIO14};
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static const unsigned ase_pins_exin0[] = {GPIO6};
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static const unsigned ase_pins_exin1[] = {GPIO29};
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static const unsigned ase_pins_exin2[] = {GPIO0};
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static const unsigned ase_pins_gpt1[] = {GPIO5};
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static const unsigned ase_pins_gpt2[] = {GPIO4};
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static const unsigned ase_pins_gpt3[] = {GPIO25};
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static const struct ltq_pin_group xway_grps[] = {
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GRP_MUX("exin0", EXIN, pins_exin0),
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GRP_MUX("exin1", EXIN, pins_exin1),
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GRP_MUX("exin2", EXIN, pins_exin2),
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GRP_MUX("jtag", JTAG, pins_jtag),
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GRP_MUX("ebu a23", EBU, pins_ebu_a23),
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GRP_MUX("ebu a24", EBU, pins_ebu_a24),
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GRP_MUX("ebu a25", EBU, pins_ebu_a25),
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GRP_MUX("ebu clk", EBU, pins_ebu_clk),
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GRP_MUX("ebu cs1", EBU, pins_ebu_cs1),
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GRP_MUX("ebu wait", EBU, pins_ebu_wait),
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GRP_MUX("nand ale", EBU, pins_nand_ale),
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GRP_MUX("nand cs1", EBU, pins_nand_cs1),
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GRP_MUX("nand cle", EBU, pins_nand_cle),
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GRP_MUX("spi", SPI, pins_spi),
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GRP_MUX("spi_cs1", SPI, pins_spi_cs1),
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GRP_MUX("spi_cs2", SPI, pins_spi_cs2),
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GRP_MUX("spi_cs3", SPI, pins_spi_cs3),
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GRP_MUX("spi_cs4", SPI, pins_spi_cs4),
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GRP_MUX("spi_cs5", SPI, pins_spi_cs5),
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GRP_MUX("spi_cs6", SPI, pins_spi_cs6),
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GRP_MUX("asc0", ASC, pins_asc0),
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GRP_MUX("asc0 cts rts", ASC, pins_asc0_cts_rts),
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GRP_MUX("stp", STP, pins_stp),
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GRP_MUX("nmi", NMI, pins_nmi),
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GRP_MUX("gpt1", GPT, pins_gpt1),
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GRP_MUX("gpt2", GPT, pins_gpt2),
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GRP_MUX("gpt3", GPT, pins_gpt3),
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GRP_MUX("clkout0", CGU, pins_clkout0),
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GRP_MUX("clkout1", CGU, pins_clkout1),
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GRP_MUX("clkout2", CGU, pins_clkout2),
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GRP_MUX("clkout3", CGU, pins_clkout3),
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GRP_MUX("gnt1", PCI, pins_pci_gnt1),
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GRP_MUX("gnt2", PCI, pins_pci_gnt2),
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GRP_MUX("gnt3", PCI, pins_pci_gnt3),
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GRP_MUX("req1", PCI, pins_pci_req1),
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GRP_MUX("req2", PCI, pins_pci_req2),
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GRP_MUX("req3", PCI, pins_pci_req3),
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/* xrx only */
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GRP_MUX("nand rdy", EBU, pins_nand_rdy),
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GRP_MUX("nand rd", EBU, pins_nand_rd),
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GRP_MUX("exin3", EXIN, pins_exin3),
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GRP_MUX("exin4", EXIN, pins_exin4),
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GRP_MUX("exin5", EXIN, pins_exin5),
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GRP_MUX("gnt4", PCI, pins_pci_gnt4),
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GRP_MUX("req4", PCI, pins_pci_gnt4),
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GRP_MUX("mdio", MDIO, pins_mdio),
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GRP_MUX("gphy0 led0", GPHY, pins_gphy0_led0),
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GRP_MUX("gphy0 led1", GPHY, pins_gphy0_led1),
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GRP_MUX("gphy0 led2", GPHY, pins_gphy0_led2),
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GRP_MUX("gphy1 led0", GPHY, pins_gphy1_led0),
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GRP_MUX("gphy1 led1", GPHY, pins_gphy1_led1),
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GRP_MUX("gphy1 led2", GPHY, pins_gphy1_led2),
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};
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static const struct ltq_pin_group ase_grps[] = {
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GRP_MUX("exin0", EXIN, ase_pins_exin0),
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GRP_MUX("exin1", EXIN, ase_pins_exin1),
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GRP_MUX("exin2", EXIN, ase_pins_exin2),
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GRP_MUX("jtag", JTAG, ase_pins_jtag),
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GRP_MUX("stp", STP, ase_pins_stp),
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GRP_MUX("asc", ASC, ase_pins_asc),
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GRP_MUX("gpt1", GPT, ase_pins_gpt1),
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GRP_MUX("gpt2", GPT, ase_pins_gpt2),
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GRP_MUX("gpt3", GPT, ase_pins_gpt3),
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GRP_MUX("ephy", EPHY, ase_pins_ephy),
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GRP_MUX("dfe", DFE, ase_pins_dfe),
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GRP_MUX("spi", SPI, ase_pins_spi),
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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 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 = gpiochip_generic_request,
|
|
.free = gpiochip_generic_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;
|
|
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) {
|
|
gpiochip_remove(&xway_chip);
|
|
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",
|
|
.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);
|