OF: pinctrl: MIPS: lantiq: implement lantiq/xway pinctrl support
Implement support for pinctrl on lantiq/xway socs. The IO core found on these socs has the registers for pinctrl, pinconf and gpio mixed up in the same register range. As the gpio_chip handling is only a few lines, the driver also implements the gpio functionality. This obseletes the old gpio driver that was located in the arch/ folder. Signed-off-by: John Crispin <blogic@openwrt.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Cc: devicetree-discuss@lists.ozlabs.org Cc: linux-kernel@vger.kernel.org
This commit is contained in:
John Crispin
parent
30404aec4d
commit
3f8c50c9b1
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@ -241,6 +241,8 @@ config LANTIQ
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select HAVE_MACH_CLKDEV
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select CLKDEV_LOOKUP
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select USE_OF
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select PINCTRL
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select PINCTRL_LANTIQ
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config LASAT
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bool "LASAT Networks platforms"
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@ -2,6 +2,7 @@ if LANTIQ
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config SOC_TYPE_XWAY
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bool
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select PINCTRL_XWAY
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default n
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choice
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@ -1 +1 @@
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obj-y := prom.o sysctrl.o clk.o reset.o gpio.o dma.o gptu.o
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obj-y := prom.o sysctrl.o clk.o reset.o dma.o gptu.o
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@ -1,183 +0,0 @@
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/*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*
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* Copyright (C) 2010 John Crispin <blogic@openwrt.org>
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*/
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#include <linux/slab.h>
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#include <linux/export.h>
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#include <linux/platform_device.h>
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#include <linux/gpio.h>
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#include <linux/ioport.h>
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#include <linux/io.h>
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#include <lantiq_soc.h>
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#define LTQ_GPIO_OUT 0x00
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#define LTQ_GPIO_IN 0x04
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#define LTQ_GPIO_DIR 0x08
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#define LTQ_GPIO_ALTSEL0 0x0C
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#define LTQ_GPIO_ALTSEL1 0x10
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#define LTQ_GPIO_OD 0x14
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#define PINS_PER_PORT 16
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#define MAX_PORTS 3
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#define ltq_gpio_getbit(m, r, p) (!!(ltq_r32(m + r) & (1 << p)))
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#define ltq_gpio_setbit(m, r, p) ltq_w32_mask(0, (1 << p), m + r)
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#define ltq_gpio_clearbit(m, r, p) ltq_w32_mask((1 << p), 0, m + r)
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struct ltq_gpio {
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void __iomem *membase;
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struct gpio_chip chip;
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};
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static struct ltq_gpio ltq_gpio_port[MAX_PORTS];
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int ltq_gpio_request(unsigned int pin, unsigned int alt0,
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unsigned int alt1, unsigned int dir, const char *name)
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{
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int id = 0;
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if (pin >= (MAX_PORTS * PINS_PER_PORT))
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return -EINVAL;
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if (gpio_request(pin, name)) {
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pr_err("failed to setup lantiq gpio: %s\n", name);
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return -EBUSY;
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}
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if (dir)
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gpio_direction_output(pin, 1);
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else
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gpio_direction_input(pin);
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while (pin >= PINS_PER_PORT) {
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pin -= PINS_PER_PORT;
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id++;
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}
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if (alt0)
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ltq_gpio_setbit(ltq_gpio_port[id].membase,
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LTQ_GPIO_ALTSEL0, pin);
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else
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ltq_gpio_clearbit(ltq_gpio_port[id].membase,
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LTQ_GPIO_ALTSEL0, pin);
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if (alt1)
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ltq_gpio_setbit(ltq_gpio_port[id].membase,
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LTQ_GPIO_ALTSEL1, pin);
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else
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ltq_gpio_clearbit(ltq_gpio_port[id].membase,
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LTQ_GPIO_ALTSEL1, pin);
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return 0;
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}
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EXPORT_SYMBOL(ltq_gpio_request);
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static void ltq_gpio_set(struct gpio_chip *chip, unsigned int offset, int value)
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{
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struct ltq_gpio *ltq_gpio = container_of(chip, struct ltq_gpio, chip);
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if (value)
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ltq_gpio_setbit(ltq_gpio->membase, LTQ_GPIO_OUT, offset);
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else
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ltq_gpio_clearbit(ltq_gpio->membase, LTQ_GPIO_OUT, offset);
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}
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static int ltq_gpio_get(struct gpio_chip *chip, unsigned int offset)
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{
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struct ltq_gpio *ltq_gpio = container_of(chip, struct ltq_gpio, chip);
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return ltq_gpio_getbit(ltq_gpio->membase, LTQ_GPIO_IN, offset);
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}
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static int ltq_gpio_direction_input(struct gpio_chip *chip, unsigned int offset)
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{
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struct ltq_gpio *ltq_gpio = container_of(chip, struct ltq_gpio, chip);
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ltq_gpio_clearbit(ltq_gpio->membase, LTQ_GPIO_OD, offset);
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ltq_gpio_clearbit(ltq_gpio->membase, LTQ_GPIO_DIR, offset);
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return 0;
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}
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static int ltq_gpio_direction_output(struct gpio_chip *chip,
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unsigned int offset, int value)
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{
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struct ltq_gpio *ltq_gpio = container_of(chip, struct ltq_gpio, chip);
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ltq_gpio_setbit(ltq_gpio->membase, LTQ_GPIO_OD, offset);
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ltq_gpio_setbit(ltq_gpio->membase, LTQ_GPIO_DIR, offset);
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ltq_gpio_set(chip, offset, value);
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return 0;
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}
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static int ltq_gpio_req(struct gpio_chip *chip, unsigned offset)
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{
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struct ltq_gpio *ltq_gpio = container_of(chip, struct ltq_gpio, chip);
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ltq_gpio_clearbit(ltq_gpio->membase, LTQ_GPIO_ALTSEL0, offset);
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ltq_gpio_clearbit(ltq_gpio->membase, LTQ_GPIO_ALTSEL1, offset);
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return 0;
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}
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static int ltq_gpio_probe(struct platform_device *pdev)
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{
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struct resource *res;
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if (pdev->id >= MAX_PORTS) {
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dev_err(&pdev->dev, "invalid gpio port %d\n",
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pdev->id);
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return -EINVAL;
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}
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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if (!res) {
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dev_err(&pdev->dev, "failed to get memory for gpio port %d\n",
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pdev->id);
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return -ENOENT;
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}
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res = devm_request_mem_region(&pdev->dev, res->start,
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resource_size(res), dev_name(&pdev->dev));
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if (!res) {
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dev_err(&pdev->dev,
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"failed to request memory for gpio port %d\n",
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pdev->id);
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return -EBUSY;
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}
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ltq_gpio_port[pdev->id].membase = devm_ioremap_nocache(&pdev->dev,
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res->start, resource_size(res));
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if (!ltq_gpio_port[pdev->id].membase) {
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dev_err(&pdev->dev, "failed to remap memory for gpio port %d\n",
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pdev->id);
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return -ENOMEM;
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}
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ltq_gpio_port[pdev->id].chip.label = "ltq_gpio";
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ltq_gpio_port[pdev->id].chip.direction_input = ltq_gpio_direction_input;
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ltq_gpio_port[pdev->id].chip.direction_output =
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ltq_gpio_direction_output;
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ltq_gpio_port[pdev->id].chip.get = ltq_gpio_get;
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ltq_gpio_port[pdev->id].chip.set = ltq_gpio_set;
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ltq_gpio_port[pdev->id].chip.request = ltq_gpio_req;
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ltq_gpio_port[pdev->id].chip.base = PINS_PER_PORT * pdev->id;
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ltq_gpio_port[pdev->id].chip.ngpio = PINS_PER_PORT;
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platform_set_drvdata(pdev, <q_gpio_port[pdev->id]);
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return gpiochip_add(<q_gpio_port[pdev->id].chip);
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}
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static struct platform_driver
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ltq_gpio_driver = {
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.probe = ltq_gpio_probe,
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.driver = {
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.name = "ltq_gpio",
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.owner = THIS_MODULE,
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},
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};
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int __init ltq_gpio_init(void)
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{
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int ret = platform_driver_register(<q_gpio_driver);
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if (ret)
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pr_info("ltq_gpio : Error registering platform driver!");
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return ret;
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}
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postcore_initcall(ltq_gpio_init);
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@ -55,6 +55,12 @@ config PINCTRL_IMX6Q
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help
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Say Y here to enable the imx6q pinctrl driver
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config PINCTRL_LANTIQ
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bool
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depends on LANTIQ
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select PINMUX
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select PINCONF
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config PINCTRL_PXA3xx
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bool
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select PINMUX
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@ -147,6 +153,11 @@ config PINCTRL_COH901
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source "drivers/pinctrl/spear/Kconfig"
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config PINCTRL_XWAY
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bool
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depends on SOC_TYPE_XWAY
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depends on PINCTRL_LANTIQ
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endmenu
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endif
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@ -29,5 +29,7 @@ obj-$(CONFIG_PINCTRL_TEGRA20) += pinctrl-tegra20.o
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obj-$(CONFIG_PINCTRL_TEGRA30) += pinctrl-tegra30.o
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obj-$(CONFIG_PINCTRL_U300) += pinctrl-u300.o
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obj-$(CONFIG_PINCTRL_COH901) += pinctrl-coh901.o
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obj-$(CONFIG_PINCTRL_XWAY) += pinctrl-xway.o
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obj-$(CONFIG_PINCTRL_LANTIQ) += pinctrl-lantiq.o
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obj-$(CONFIG_PLAT_SPEAR) += spear/
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@ -0,0 +1,342 @@
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/*
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* linux/drivers/pinctrl/pinctrl-lantiq.c
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* based on linux/drivers/pinctrl/pinctrl-pxa3xx.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/module.h>
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#include <linux/device.h>
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#include <linux/io.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/of.h>
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#include "pinctrl-lantiq.h"
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static int ltq_get_group_count(struct pinctrl_dev *pctrldev)
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{
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struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
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return info->num_grps;
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}
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static const char *ltq_get_group_name(struct pinctrl_dev *pctrldev,
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unsigned selector)
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{
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struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
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if (selector >= info->num_grps)
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return NULL;
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return info->grps[selector].name;
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}
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static int ltq_get_group_pins(struct pinctrl_dev *pctrldev,
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unsigned selector,
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const unsigned **pins,
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unsigned *num_pins)
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{
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struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
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if (selector >= info->num_grps)
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return -EINVAL;
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*pins = info->grps[selector].pins;
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*num_pins = info->grps[selector].npins;
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return 0;
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}
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void ltq_pinctrl_dt_free_map(struct pinctrl_dev *pctldev,
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struct pinctrl_map *map, unsigned num_maps)
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{
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int i;
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for (i = 0; i < num_maps; i++)
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if (map[i].type == PIN_MAP_TYPE_CONFIGS_PIN)
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kfree(map[i].data.configs.configs);
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kfree(map);
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}
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static void ltq_pinctrl_pin_dbg_show(struct pinctrl_dev *pctldev,
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struct seq_file *s,
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unsigned offset)
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{
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seq_printf(s, " %s", dev_name(pctldev->dev));
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}
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static int ltq_pinctrl_dt_subnode_to_map(struct pinctrl_dev *pctldev,
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struct device_node *np,
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struct pinctrl_map **map)
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{
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struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctldev);
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unsigned long configs[3];
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unsigned num_configs = 0;
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struct property *prop;
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const char *group, *pin;
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const char *function;
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int ret, i;
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ret = of_property_read_string(np, "lantiq,function", &function);
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if (!ret) {
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of_property_for_each_string(np, "lantiq,groups", prop, group) {
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(*map)->type = PIN_MAP_TYPE_MUX_GROUP;
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(*map)->name = function;
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(*map)->data.mux.group = group;
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(*map)->data.mux.function = function;
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(*map)++;
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}
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if (of_find_property(np, "lantiq,pins", NULL))
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dev_err(pctldev->dev,
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"%s mixes pins and groups settings\n",
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np->name);
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return 0;
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}
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for (i = 0; i < info->num_params; i++) {
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u32 val;
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int ret = of_property_read_u32(np,
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info->params[i].property, &val);
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if (!ret)
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configs[num_configs++] =
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LTQ_PINCONF_PACK(info->params[i].param,
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val);
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}
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if (!num_configs)
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return -EINVAL;
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of_property_for_each_string(np, "lantiq,pins", prop, pin) {
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(*map)->data.configs.configs = kmemdup(configs,
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num_configs * sizeof(unsigned long),
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GFP_KERNEL);
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(*map)->type = PIN_MAP_TYPE_CONFIGS_PIN;
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(*map)->name = pin;
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(*map)->data.configs.group_or_pin = pin;
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(*map)->data.configs.num_configs = num_configs;
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(*map)++;
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}
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return 0;
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}
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static int ltq_pinctrl_dt_subnode_size(struct device_node *np)
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{
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int ret;
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ret = of_property_count_strings(np, "lantiq,groups");
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if (ret < 0)
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ret = of_property_count_strings(np, "lantiq,pins");
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return ret;
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}
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int ltq_pinctrl_dt_node_to_map(struct pinctrl_dev *pctldev,
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struct device_node *np_config,
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struct pinctrl_map **map,
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unsigned *num_maps)
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{
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struct pinctrl_map *tmp;
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struct device_node *np;
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int ret;
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*num_maps = 0;
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for_each_child_of_node(np_config, np)
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*num_maps += ltq_pinctrl_dt_subnode_size(np);
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*map = kzalloc(*num_maps * sizeof(struct pinctrl_map), GFP_KERNEL);
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if (!*map)
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return -ENOMEM;
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tmp = *map;
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for_each_child_of_node(np_config, np) {
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ret = ltq_pinctrl_dt_subnode_to_map(pctldev, np, &tmp);
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if (ret < 0) {
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ltq_pinctrl_dt_free_map(pctldev, *map, *num_maps);
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return ret;
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}
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}
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return 0;
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}
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static struct pinctrl_ops ltq_pctrl_ops = {
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.get_groups_count = ltq_get_group_count,
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.get_group_name = ltq_get_group_name,
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.get_group_pins = ltq_get_group_pins,
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.pin_dbg_show = ltq_pinctrl_pin_dbg_show,
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.dt_node_to_map = ltq_pinctrl_dt_node_to_map,
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.dt_free_map = ltq_pinctrl_dt_free_map,
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};
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static int ltq_pmx_func_count(struct pinctrl_dev *pctrldev)
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{
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struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
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return info->num_funcs;
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}
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static const char *ltq_pmx_func_name(struct pinctrl_dev *pctrldev,
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unsigned selector)
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{
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struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
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if (selector >= info->num_funcs)
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return NULL;
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return info->funcs[selector].name;
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}
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static int ltq_pmx_get_groups(struct pinctrl_dev *pctrldev,
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unsigned func,
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const char * const **groups,
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unsigned * const num_groups)
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{
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struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
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*groups = info->funcs[func].groups;
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*num_groups = info->funcs[func].num_groups;
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return 0;
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}
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/* Return function number. If failure, return negative value. */
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static int match_mux(const struct ltq_mfp_pin *mfp, unsigned mux)
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{
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int i;
|
||||
for (i = 0; i < LTQ_MAX_MUX; i++) {
|
||||
if (mfp->func[i] == mux)
|
||||
break;
|
||||
}
|
||||
if (i >= LTQ_MAX_MUX)
|
||||
return -EINVAL;
|
||||
return i;
|
||||
}
|
||||
|
||||
/* dont assume .mfp is linearly mapped. find the mfp with the correct .pin */
|
||||
static int match_mfp(const struct ltq_pinmux_info *info, int pin)
|
||||
{
|
||||
int i;
|
||||
for (i = 0; i < info->num_mfp; i++) {
|
||||
if (info->mfp[i].pin == pin)
|
||||
return i;
|
||||
}
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* check whether current pin configuration is valid. Negative for failure */
|
||||
static int match_group_mux(const struct ltq_pin_group *grp,
|
||||
const struct ltq_pinmux_info *info,
|
||||
unsigned mux)
|
||||
{
|
||||
int i, pin, ret = 0;
|
||||
for (i = 0; i < grp->npins; i++) {
|
||||
pin = match_mfp(info, grp->pins[i]);
|
||||
if (pin < 0) {
|
||||
dev_err(info->dev, "could not find mfp for pin %d\n",
|
||||
grp->pins[i]);
|
||||
return -EINVAL;
|
||||
}
|
||||
ret = match_mux(&info->mfp[pin], mux);
|
||||
if (ret < 0) {
|
||||
dev_err(info->dev, "Can't find mux %d on pin%d\n",
|
||||
mux, pin);
|
||||
break;
|
||||
}
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int ltq_pmx_enable(struct pinctrl_dev *pctrldev,
|
||||
unsigned func,
|
||||
unsigned group)
|
||||
{
|
||||
struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
|
||||
const struct ltq_pin_group *pin_grp = &info->grps[group];
|
||||
int i, pin, pin_func, ret;
|
||||
|
||||
if (!pin_grp->npins ||
|
||||
(match_group_mux(pin_grp, info, pin_grp->mux) < 0)) {
|
||||
dev_err(info->dev, "Failed to set the pin group: %s\n",
|
||||
info->grps[group].name);
|
||||
return -EINVAL;
|
||||
}
|
||||
for (i = 0; i < pin_grp->npins; i++) {
|
||||
pin = match_mfp(info, pin_grp->pins[i]);
|
||||
if (pin < 0) {
|
||||
dev_err(info->dev, "could not find mfp for pin %d\n",
|
||||
pin_grp->pins[i]);
|
||||
return -EINVAL;
|
||||
}
|
||||
pin_func = match_mux(&info->mfp[pin], pin_grp->mux);
|
||||
ret = info->apply_mux(pctrldev, pin, pin_func);
|
||||
if (ret) {
|
||||
dev_err(info->dev,
|
||||
"failed to apply mux %d for pin %d\n",
|
||||
pin_func, pin);
|
||||
return ret;
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void ltq_pmx_disable(struct pinctrl_dev *pctrldev,
|
||||
unsigned func,
|
||||
unsigned group)
|
||||
{
|
||||
/*
|
||||
* Nothing to do here. However, pinconf_check_ops() requires this
|
||||
* callback to be defined.
|
||||
*/
|
||||
}
|
||||
|
||||
static int ltq_pmx_gpio_request_enable(struct pinctrl_dev *pctrldev,
|
||||
struct pinctrl_gpio_range *range,
|
||||
unsigned pin)
|
||||
{
|
||||
struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
|
||||
int mfp = match_mfp(info, pin + (range->id * 32));
|
||||
int pin_func;
|
||||
|
||||
if (mfp < 0) {
|
||||
dev_err(info->dev, "could not find mfp for pin %d\n", pin);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
pin_func = match_mux(&info->mfp[mfp], 0);
|
||||
if (pin_func < 0) {
|
||||
dev_err(info->dev, "No GPIO function on pin%d\n", mfp);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
return info->apply_mux(pctrldev, mfp, pin_func);
|
||||
}
|
||||
|
||||
static struct pinmux_ops ltq_pmx_ops = {
|
||||
.get_functions_count = ltq_pmx_func_count,
|
||||
.get_function_name = ltq_pmx_func_name,
|
||||
.get_function_groups = ltq_pmx_get_groups,
|
||||
.enable = ltq_pmx_enable,
|
||||
.disable = ltq_pmx_disable,
|
||||
.gpio_request_enable = ltq_pmx_gpio_request_enable,
|
||||
};
|
||||
|
||||
/*
|
||||
* allow different socs to register with the generic part of the lanti
|
||||
* pinctrl code
|
||||
*/
|
||||
int ltq_pinctrl_register(struct platform_device *pdev,
|
||||
struct ltq_pinmux_info *info)
|
||||
{
|
||||
struct pinctrl_desc *desc;
|
||||
|
||||
if (!info)
|
||||
return -EINVAL;
|
||||
desc = info->desc;
|
||||
desc->pctlops = <q_pctrl_ops;
|
||||
desc->pmxops = <q_pmx_ops;
|
||||
info->dev = &pdev->dev;
|
||||
|
||||
info->pctrl = pinctrl_register(desc, &pdev->dev, info);
|
||||
if (!info->pctrl) {
|
||||
dev_err(&pdev->dev, "failed to register LTQ pinmux driver\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
platform_set_drvdata(pdev, info);
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -0,0 +1,194 @@
|
|||
/*
|
||||
* linux/drivers/pinctrl/pinctrl-lantiq.h
|
||||
* based on linux/drivers/pinctrl/pinctrl-pxa3xx.h
|
||||
*
|
||||
* 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>
|
||||
*/
|
||||
|
||||
#ifndef __PINCTRL_LANTIQ_H
|
||||
|
||||
#include <linux/clkdev.h>
|
||||
#include <linux/pinctrl/pinctrl.h>
|
||||
#include <linux/pinctrl/pinconf.h>
|
||||
#include <linux/pinctrl/pinmux.h>
|
||||
#include <linux/pinctrl/consumer.h>
|
||||
#include <linux/pinctrl/machine.h>
|
||||
|
||||
#include "core.h"
|
||||
|
||||
#define ARRAY_AND_SIZE(x) (x), ARRAY_SIZE(x)
|
||||
|
||||
#define LTQ_MAX_MUX 4
|
||||
#define MFPR_FUNC_MASK 0x3
|
||||
|
||||
#define LTQ_PINCONF_PACK(param, arg) ((param) << 16 | (arg))
|
||||
#define LTQ_PINCONF_UNPACK_PARAM(conf) ((conf) >> 16)
|
||||
#define LTQ_PINCONF_UNPACK_ARG(conf) ((conf) & 0xffff)
|
||||
|
||||
enum ltq_pinconf_param {
|
||||
LTQ_PINCONF_PARAM_PULL,
|
||||
LTQ_PINCONF_PARAM_OPEN_DRAIN,
|
||||
LTQ_PINCONF_PARAM_DRIVE_CURRENT,
|
||||
LTQ_PINCONF_PARAM_SLEW_RATE,
|
||||
};
|
||||
|
||||
struct ltq_cfg_param {
|
||||
const char *property;
|
||||
enum ltq_pinconf_param param;
|
||||
};
|
||||
|
||||
struct ltq_mfp_pin {
|
||||
const char *name;
|
||||
const unsigned int pin;
|
||||
const unsigned short func[LTQ_MAX_MUX];
|
||||
};
|
||||
|
||||
struct ltq_pin_group {
|
||||
const char *name;
|
||||
const unsigned mux;
|
||||
const unsigned *pins;
|
||||
const unsigned npins;
|
||||
};
|
||||
|
||||
struct ltq_pmx_func {
|
||||
const char *name;
|
||||
const char * const *groups;
|
||||
const unsigned num_groups;
|
||||
};
|
||||
|
||||
struct ltq_pinmux_info {
|
||||
struct device *dev;
|
||||
struct pinctrl_dev *pctrl;
|
||||
|
||||
/* we need to manage up to 5 pad controllers */
|
||||
void __iomem *membase[5];
|
||||
|
||||
/* the descriptor for the subsystem */
|
||||
struct pinctrl_desc *desc;
|
||||
|
||||
/* we expose our pads to the subsystem */
|
||||
struct pinctrl_pin_desc *pads;
|
||||
|
||||
/* the number of pads. this varies between socs */
|
||||
unsigned int num_pads;
|
||||
|
||||
/* these are our multifunction pins */
|
||||
const struct ltq_mfp_pin *mfp;
|
||||
unsigned int num_mfp;
|
||||
|
||||
/* a number of multifunction pins can be grouped together */
|
||||
const struct ltq_pin_group *grps;
|
||||
unsigned int num_grps;
|
||||
|
||||
/* a mapping between function string and id */
|
||||
const struct ltq_pmx_func *funcs;
|
||||
unsigned int num_funcs;
|
||||
|
||||
/* the pinconf options that we are able to read from the DT */
|
||||
const struct ltq_cfg_param *params;
|
||||
unsigned int num_params;
|
||||
|
||||
/* the pad controller can have a irq mapping */
|
||||
const unsigned *exin;
|
||||
unsigned int num_exin;
|
||||
|
||||
/* we need 5 clocks max */
|
||||
struct clk *clk[5];
|
||||
|
||||
/* soc specific callback used to apply muxing */
|
||||
int (*apply_mux)(struct pinctrl_dev *pctrldev, int pin, int mux);
|
||||
};
|
||||
|
||||
enum ltq_pin {
|
||||
GPIO0 = 0,
|
||||
GPIO1,
|
||||
GPIO2,
|
||||
GPIO3,
|
||||
GPIO4,
|
||||
GPIO5,
|
||||
GPIO6,
|
||||
GPIO7,
|
||||
GPIO8,
|
||||
GPIO9,
|
||||
GPIO10, /* 10 */
|
||||
GPIO11,
|
||||
GPIO12,
|
||||
GPIO13,
|
||||
GPIO14,
|
||||
GPIO15,
|
||||
GPIO16,
|
||||
GPIO17,
|
||||
GPIO18,
|
||||
GPIO19,
|
||||
GPIO20, /* 20 */
|
||||
GPIO21,
|
||||
GPIO22,
|
||||
GPIO23,
|
||||
GPIO24,
|
||||
GPIO25,
|
||||
GPIO26,
|
||||
GPIO27,
|
||||
GPIO28,
|
||||
GPIO29,
|
||||
GPIO30, /* 30 */
|
||||
GPIO31,
|
||||
GPIO32,
|
||||
GPIO33,
|
||||
GPIO34,
|
||||
GPIO35,
|
||||
GPIO36,
|
||||
GPIO37,
|
||||
GPIO38,
|
||||
GPIO39,
|
||||
GPIO40, /* 40 */
|
||||
GPIO41,
|
||||
GPIO42,
|
||||
GPIO43,
|
||||
GPIO44,
|
||||
GPIO45,
|
||||
GPIO46,
|
||||
GPIO47,
|
||||
GPIO48,
|
||||
GPIO49,
|
||||
GPIO50, /* 50 */
|
||||
GPIO51,
|
||||
GPIO52,
|
||||
GPIO53,
|
||||
GPIO54,
|
||||
GPIO55,
|
||||
|
||||
GPIO64,
|
||||
GPIO65,
|
||||
GPIO66,
|
||||
GPIO67,
|
||||
GPIO68,
|
||||
GPIO69,
|
||||
GPIO70,
|
||||
GPIO71,
|
||||
GPIO72,
|
||||
GPIO73,
|
||||
GPIO74,
|
||||
GPIO75,
|
||||
GPIO76,
|
||||
GPIO77,
|
||||
GPIO78,
|
||||
GPIO79,
|
||||
GPIO80,
|
||||
GPIO81,
|
||||
GPIO82,
|
||||
GPIO83,
|
||||
GPIO84,
|
||||
GPIO85,
|
||||
GPIO86,
|
||||
GPIO87,
|
||||
GPIO88,
|
||||
};
|
||||
|
||||
extern int ltq_pinctrl_register(struct platform_device *pdev,
|
||||
struct ltq_pinmux_info *info);
|
||||
extern int ltq_pinctrl_unregister(struct platform_device *pdev);
|
||||
#endif /* __PINCTRL_PXA3XX_H */
|
||||
|
|
@ -0,0 +1,781 @@
|
|||
/*
|
||||
* 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/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/module.h>
|
||||
#include <linux/io.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_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(port);
|
||||
*config = LTQ_PINCONF_PACK(param,
|
||||
!!gpio_getbit(info->membase[0], reg, PORT_PIN(port)));
|
||||
break;
|
||||
|
||||
case LTQ_PINCONF_PARAM_PULL:
|
||||
if (port == PORT3)
|
||||
reg = GPIO3_PUDEN;
|
||||
else
|
||||
reg = GPIO_PUDEN(port);
|
||||
if (!gpio_getbit(info->membase[0], reg, PORT_PIN(port))) {
|
||||
*config = LTQ_PINCONF_PACK(param, 0);
|
||||
break;
|
||||
}
|
||||
|
||||
if (port == PORT3)
|
||||
reg = GPIO3_PUDSEL;
|
||||
else
|
||||
reg = GPIO_PUDSEL(port);
|
||||
if (!gpio_getbit(info->membase[0], reg, PORT_PIN(port)))
|
||||
*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(port);
|
||||
gpio_setbit(info->membase[0], reg, PORT_PIN(port));
|
||||
break;
|
||||
|
||||
case LTQ_PINCONF_PARAM_PULL:
|
||||
if (port == PORT3)
|
||||
reg = GPIO3_PUDEN;
|
||||
else
|
||||
reg = GPIO_PUDEN(port);
|
||||
if (arg == 0) {
|
||||
gpio_clearbit(info->membase[0], reg, PORT_PIN(port));
|
||||
break;
|
||||
}
|
||||
gpio_setbit(info->membase[0], reg, PORT_PIN(port));
|
||||
|
||||
if (port == PORT3)
|
||||
reg = GPIO3_PUDSEL;
|
||||
else
|
||||
reg = GPIO_PUDSEL(port);
|
||||
if (arg == 1)
|
||||
gpio_clearbit(info->membase[0], reg, PORT_PIN(port));
|
||||
else if (arg == 2)
|
||||
gpio_setbit(info->membase[0], reg, PORT_PIN(port));
|
||||
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;
|
||||
}
|
||||
|
||||
struct pinconf_ops xway_pinconf_ops = {
|
||||
.pin_config_get = xway_pinconf_get,
|
||||
.pin_config_set = xway_pinconf_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 __devinit 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);
|
||||
Reference in New Issue