ath79: add Mikrotik rb4xx series drivers
This adds 3 Mikrotik rb4xx series drivers as follows: rb4xx-cpld: This is in the mfd subsystem, and is the parent CPLD device that interfaces between the SoC SPI bus and its two children below. rb4xx-gpio: This is the GPIO expander. rb4xx-nand: This is the NAND driver. The history of this code comes in three phases. 1. The first is a May 2015 attempt to push the equivalient ar71xx rb4xx drivers upstream. See https://lore.kernel.org/patchwork/patch/940880/. Module-author: Gabor Juhos <juhosg@openwrt.org> Module-author: Imre Kaloz <kaloz@openwrt.org> Module-author: Bert Vermeulen <bert@biot.com> 2. Next several ar71xx patches were applied bringing the code current. commitmaster7bbf4117c6Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> commitaf79fdbe4acommit889272d92dcommite21cb649a2commit7c09fa4a74Signed-off-by: Felix Fietkau <nbd@nbd.name> 3. Finally a heavy refactor to split the driver into the three new subsystems, and updated to work with the device tree configuration, plus updates and review feedback incorporated Reviewed-by: Thibaut VARÈNE <hacks@slashdirt.org> Signed-off-by: Christopher Hill <ch6574@gmail.com>
Christopher Hill
4 years ago
committed by
Adrian Schmutzler
parent
344e75eb2b
commit
fa70b3a4bb
@ -0,0 +1,172 @@
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* GPIO driver for the MikroTik RouterBoard 4xx series
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*
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* Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
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* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
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* Copyright (C) 2015 Bert Vermeulen <bert@biot.com>
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* Copyright (C) 2020 Christopher Hill <ch6574@gmail.com>
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*
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* This file was based on the driver for Linux 2.6.22 published by
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* MikroTik for their RouterBoard 4xx series devices.
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*
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* N.B. driver probe reports "DMA mask not set" warnings which are
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* an artifact of using a platform_driver as an MFD device child.
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* See conversation here https://lkml.org/lkml/2020/4/28/675
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*/
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#include <linux/platform_device.h>
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#include <linux/gpio/driver.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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#include <mfd/rb4xx-cpld.h>
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struct rb4xx_gpio {
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struct rb4xx_cpld *cpld;
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struct device *dev;
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struct gpio_chip chip;
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struct mutex lock;
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u16 values; /* bitfield of GPIO 0-8 current values */
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};
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static int rb4xx_gpio_cpld_set(struct rb4xx_gpio *gpio, unsigned int offset,
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int value)
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{
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struct rb4xx_cpld *cpld = gpio->cpld;
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u16 values;
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int ret;
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mutex_lock(&gpio->lock);
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values = gpio->values;
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if (value)
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values |= BIT(offset);
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else
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values &= ~(BIT(offset));
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if (values == gpio->values) {
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ret = 0;
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goto unlock;
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}
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if (offset < 8) {
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ret = cpld->gpio_set_0_7(cpld, values & 0xff);
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} else if (offset == 8) {
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ret = cpld->gpio_set_8(cpld, values >> 8);
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}
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if(likely(!ret))
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gpio->values = values;
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unlock:
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mutex_unlock(&gpio->lock);
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return ret;
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}
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static int rb4xx_gpio_get_direction(struct gpio_chip *chip, unsigned int offset)
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{
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return 0; /* All 9 GPIOs are out */
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}
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static int rb4xx_gpio_direction_input(struct gpio_chip *chip,
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unsigned int offset)
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{
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return -EOPNOTSUPP;
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}
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static int rb4xx_gpio_direction_output(struct gpio_chip *chip,
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unsigned int offset, int value)
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{
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return rb4xx_gpio_cpld_set(gpiochip_get_data(chip), offset, value);
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}
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static int rb4xx_gpio_get(struct gpio_chip *chip, unsigned int offset)
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{
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struct rb4xx_gpio *gpio = gpiochip_get_data(chip);
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int ret;
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mutex_lock(&gpio->lock);
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ret = (gpio->values >> offset) & 0x1;
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mutex_unlock(&gpio->lock);
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return ret;
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}
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static void rb4xx_gpio_set(struct gpio_chip *chip, unsigned int offset,
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int value)
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{
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rb4xx_gpio_cpld_set(gpiochip_get_data(chip), offset, value);
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}
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static int rb4xx_gpio_probe(struct platform_device *pdev)
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{
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struct device *dev = &pdev->dev;
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struct device *parent = dev->parent;
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struct rb4xx_gpio *gpio;
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u32 val;
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if (!parent)
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return -ENODEV;
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gpio = devm_kzalloc(dev, sizeof(*gpio), GFP_KERNEL);
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if (!gpio)
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return -ENOMEM;
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platform_set_drvdata(pdev, gpio);
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gpio->cpld = dev_get_drvdata(parent);
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gpio->dev = dev;
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gpio->values = 0;
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mutex_init(&gpio->lock);
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gpio->chip.label = "rb4xx-gpio";
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gpio->chip.parent = dev;
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gpio->chip.owner = THIS_MODULE;
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gpio->chip.get_direction = rb4xx_gpio_get_direction;
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gpio->chip.direction_input = rb4xx_gpio_direction_input;
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gpio->chip.direction_output = rb4xx_gpio_direction_output;
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gpio->chip.get = rb4xx_gpio_get;
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gpio->chip.set = rb4xx_gpio_set;
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gpio->chip.ngpio = 9;
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gpio->chip.base = -1;
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gpio->chip.can_sleep = 1;
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if (!of_property_read_u32(dev->of_node, "base", &val))
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gpio->chip.base = val;
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return gpiochip_add_data(&gpio->chip, gpio);
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}
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static int rb4xx_gpio_remove(struct platform_device *pdev)
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{
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struct rb4xx_gpio *gpio = platform_get_drvdata(pdev);
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gpiochip_remove(&gpio->chip);
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mutex_destroy(&gpio->lock);
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return 0;
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}
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static const struct platform_device_id rb4xx_gpio_id_table[] = {
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{ "mikrotik,rb4xx-gpio", },
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{ },
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};
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MODULE_DEVICE_TABLE(platform, rb4xx_gpio_id_table);
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static struct platform_driver rb4xx_gpio_driver = {
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.probe = rb4xx_gpio_probe,
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.remove = rb4xx_gpio_remove,
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.id_table = rb4xx_gpio_id_table,
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.driver = {
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.name = "rb4xx-gpio",
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},
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};
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module_platform_driver(rb4xx_gpio_driver);
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MODULE_DESCRIPTION("Mikrotik RB4xx GPIO driver");
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MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
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MODULE_AUTHOR("Imre Kaloz <kaloz@openwrt.org>");
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MODULE_AUTHOR("Bert Vermeulen <bert@biot.com>");
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MODULE_AUTHOR("Christopher Hill <ch6574@gmail.com");
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MODULE_LICENSE("GPL v2");
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@ -0,0 +1,182 @@
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* CPLD driver for the MikroTik RouterBoard 4xx series
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*
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* This driver provides access to a CPLD that interfaces between the SoC SPI bus
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* and other devices. Behind the CPLD there is a NAND flash chip and five LEDs.
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*
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* The CPLD supports SPI two-wire mode, in which two bits are transferred per
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* SPI clock cycle. The second bit is transmitted with the SoC's CS2 pin.
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*
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* The CPLD also acts as a GPIO expander.
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*
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* Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
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* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
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* Copyright (C) 2015 Bert Vermeulen <bert@biot.com>
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* Copyright (C) 2020 Christopher Hill <ch6574@gmail.com>
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*
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* This file was based on the driver for Linux 2.6.22 published by
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* MikroTik for their RouterBoard 4xx series devices.
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*/
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#include <linux/mfd/core.h>
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#include <linux/spi/spi.h>
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#include <linux/module.h>
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#include <linux/of_platform.h>
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#include <mfd/rb4xx-cpld.h>
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/* CPLD commands */
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#define CPLD_CMD_WRITE_NAND 0x08 /* send cmd, n x send data, send idle */
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#define CPLD_CMD_WRITE_CFG 0x09 /* send cmd, n x send cfg */
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#define CPLD_CMD_READ_NAND 0x0a /* send cmd, send idle, n x read data */
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#define CPLD_CMD_READ_FAST 0x0b /* send cmd, 4 x idle, n x read data */
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#define CPLD_CMD_GPIO8_HIGH 0x0c /* send cmd */
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#define CPLD_CMD_GPIO8_LOW 0x0d /* send cmd */
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static int rb4xx_cpld_write_nand(struct rb4xx_cpld *cpld, const void *tx_buf,
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unsigned int len)
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{
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struct spi_message m;
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static const u8 cmd = CPLD_CMD_WRITE_NAND;
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struct spi_transfer t[3] = {
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{
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.tx_buf = &cmd,
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.len = sizeof(cmd),
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}, {
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.tx_buf = tx_buf,
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.len = len,
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.tx_nbits = SPI_NBITS_DUAL,
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}, {
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.len = 1,
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.tx_nbits = SPI_NBITS_DUAL,
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},
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};
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spi_message_init(&m);
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spi_message_add_tail(&t[0], &m);
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spi_message_add_tail(&t[1], &m);
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spi_message_add_tail(&t[2], &m);
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return spi_sync(cpld->spi, &m);
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}
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static int rb4xx_cpld_read_nand(struct rb4xx_cpld *cpld, void *rx_buf,
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unsigned int len)
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{
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struct spi_message m;
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static const u8 cmd[2] = {
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CPLD_CMD_READ_NAND, 0
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};
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struct spi_transfer t[2] = {
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{
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.tx_buf = &cmd,
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.len = sizeof(cmd),
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}, {
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.rx_buf = rx_buf,
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.len = len,
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},
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};
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spi_message_init(&m);
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spi_message_add_tail(&t[0], &m);
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spi_message_add_tail(&t[1], &m);
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return spi_sync(cpld->spi, &m);
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}
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static int rb4xx_cpld_cmd(struct rb4xx_cpld *cpld, const void *tx_buf,
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unsigned int len)
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{
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struct spi_message m;
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struct spi_transfer t = {
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.tx_buf = tx_buf,
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.len = len,
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};
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spi_message_init(&m);
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spi_message_add_tail(&t, &m);
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return spi_sync(cpld->spi, &m);
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}
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static int rb4xx_cpld_gpio_set_0_7(struct rb4xx_cpld *cpld, u8 values)
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{
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/* GPIO 0-7 change can be sent via command + bitfield */
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u8 cmd[2] = {
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CPLD_CMD_WRITE_CFG, values
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};
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return rb4xx_cpld_cmd(cpld, &cmd, 2);
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}
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static int rb4xx_cpld_gpio_set_8(struct rb4xx_cpld *cpld, u8 value)
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{
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/* GPIO 8 uses dedicated high/low commands */
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u8 cmd = CPLD_CMD_GPIO8_HIGH | !!(value);
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return rb4xx_cpld_cmd(cpld, &cmd, 1);
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}
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static const struct mfd_cell rb4xx_cpld_cells[] = {
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{
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.name = "mikrotik,rb4xx-gpio",
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.of_compatible = "mikrotik,rb4xx-gpio",
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}, {
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.name = "mikrotik,rb4xx-nand",
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.of_compatible = "mikrotik,rb4xx-nand",
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},
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};
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static int rb4xx_cpld_probe(struct spi_device *spi)
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{
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struct device *dev = &spi->dev;
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struct rb4xx_cpld *cpld;
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int ret;
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cpld = devm_kzalloc(dev, sizeof(*cpld), GFP_KERNEL);
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if (!cpld)
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return -ENOMEM;
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dev_set_drvdata(dev, cpld);
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cpld->spi = spi;
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cpld->write_nand = rb4xx_cpld_write_nand;
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cpld->read_nand = rb4xx_cpld_read_nand;
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cpld->gpio_set_0_7 = rb4xx_cpld_gpio_set_0_7;
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cpld->gpio_set_8 = rb4xx_cpld_gpio_set_8;
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spi->mode = SPI_MODE_0 | SPI_TX_DUAL;
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ret = spi_setup(spi);
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if (ret)
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return ret;
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return devm_mfd_add_devices(dev, PLATFORM_DEVID_NONE,
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rb4xx_cpld_cells,
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ARRAY_SIZE(rb4xx_cpld_cells),
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NULL, 0, NULL);
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}
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static int rb4xx_cpld_remove(struct spi_device *spi)
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{
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return 0;
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}
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static const struct of_device_id rb4xx_cpld_dt_match[] = {
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{ .compatible = "mikrotik,rb4xx-cpld", },
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{ },
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};
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MODULE_DEVICE_TABLE(of, rb4xx_cpld_dt_match);
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static struct spi_driver rb4xx_cpld_driver = {
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.probe = rb4xx_cpld_probe,
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.remove = rb4xx_cpld_remove,
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.driver = {
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.name = "rb4xx-cpld",
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.bus = &spi_bus_type,
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.of_match_table = of_match_ptr(rb4xx_cpld_dt_match),
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},
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};
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module_spi_driver(rb4xx_cpld_driver);
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MODULE_DESCRIPTION("Mikrotik RB4xx CPLD driver");
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MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
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MODULE_AUTHOR("Imre Kaloz <kaloz@openwrt.org>");
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MODULE_AUTHOR("Bert Vermeulen <bert@biot.com>");
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MODULE_AUTHOR("Christopher Hill <ch6574@gmail.com");
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MODULE_LICENSE("GPL v2");
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@ -0,0 +1,297 @@
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* NAND driver for the MikroTik RouterBoard 4xx series
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*
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* Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
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* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
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* Copyright (C) 2015 Bert Vermeulen <bert@biot.com>
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* Copyright (C) 2020 Christopher Hill <ch6574@gmail.com>
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*
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* This file was based on the driver for Linux 2.6.22 published by
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* MikroTik for their RouterBoard 4xx series devices.
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*
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* N.B. driver probe reports "DMA mask not set" warnings which are
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* an artifact of using a platform_driver as an MFD device child.
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* See conversation here https://lkml.org/lkml/2020/4/28/675
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*/
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#include <linux/platform_device.h>
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#include <linux/mtd/rawnand.h>
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#include <linux/gpio/consumer.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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#include <linux/version.h>
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#include <mfd/rb4xx-cpld.h>
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struct rb4xx_nand {
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struct rb4xx_cpld *cpld;
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struct device *dev;
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struct nand_chip chip;
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struct gpio_desc *ale;
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struct gpio_desc *cle;
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struct gpio_desc *nce;
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struct gpio_desc *rdy;
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};
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static int rb4xx_ooblayout_ecc(struct mtd_info *mtd, int section,
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struct mtd_oob_region *oobregion)
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{
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switch (section) {
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case 0:
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oobregion->offset = 8;
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oobregion->length = 3;
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return 0;
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case 1:
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oobregion->offset = 13;
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oobregion->length = 3;
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return 0;
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default:
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return -ERANGE;
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}
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}
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static int rb4xx_ooblayout_free(struct mtd_info *mtd, int section,
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struct mtd_oob_region *oobregion)
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{
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switch (section) {
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case 0:
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oobregion->offset = 0;
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oobregion->length = 4;
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return 0;
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case 1:
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oobregion->offset = 4;
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oobregion->length = 1;
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return 0;
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case 2:
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oobregion->offset = 6;
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oobregion->length = 2;
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return 0;
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case 3:
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oobregion->offset = 11;
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oobregion->length = 2;
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return 0;
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default:
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return -ERANGE;
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}
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}
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static const struct mtd_ooblayout_ops rb4xx_nand_ecclayout_ops = {
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.ecc = rb4xx_ooblayout_ecc,
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.free = rb4xx_ooblayout_free,
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};
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#if LINUX_VERSION_CODE < KERNEL_VERSION(4,20,0)
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static uint8_t rb4xx_nand_read_byte(struct mtd_info *mtd)
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{
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struct rb4xx_nand *nand = mtd->priv;
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#else
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static u8 rb4xx_nand_read_byte(struct nand_chip *chip)
|
||||
{
|
||||
struct rb4xx_nand *nand = chip->priv;
|
||||
#endif
|
||||
struct rb4xx_cpld *cpld = nand->cpld;
|
||||
u8 data;
|
||||
int ret;
|
||||
|
||||
ret = cpld->read_nand(cpld, &data, 1);
|
||||
if (unlikely(ret))
|
||||
return 0xff;
|
||||
|
||||
return data;
|
||||
}
|
||||
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(4,20,0)
|
||||
static void rb4xx_nand_write_buf(struct mtd_info *mtd, const uint8_t *buf,
|
||||
int len)
|
||||
{
|
||||
struct rb4xx_nand *nand = mtd->priv;
|
||||
#else
|
||||
static void rb4xx_nand_write_buf(struct nand_chip *chip, const u8 *buf, int len)
|
||||
{
|
||||
struct rb4xx_nand *nand = chip->priv;
|
||||
#endif
|
||||
struct rb4xx_cpld *cpld = nand->cpld;
|
||||
|
||||
cpld->write_nand(cpld, buf, len);
|
||||
}
|
||||
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(4,20,0)
|
||||
static void rb4xx_nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
|
||||
{
|
||||
struct rb4xx_nand *nand = mtd->priv;
|
||||
#else
|
||||
static void rb4xx_nand_read_buf(struct nand_chip *chip, u8 *buf, int len)
|
||||
{
|
||||
struct rb4xx_nand *nand = chip->priv;
|
||||
#endif
|
||||
struct rb4xx_cpld *cpld = nand->cpld;
|
||||
|
||||
cpld->read_nand(cpld, buf, len);
|
||||
}
|
||||
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(4,20,0)
|
||||
static void rb4xx_nand_cmd_ctrl(struct mtd_info *mtd, int dat, unsigned int ctrl)
|
||||
{
|
||||
struct rb4xx_nand *nand = mtd->priv;
|
||||
#else
|
||||
static void rb4xx_nand_cmd_ctrl(struct nand_chip *chip, int dat,
|
||||
unsigned int ctrl)
|
||||
{
|
||||
struct rb4xx_nand *nand = chip->priv;
|
||||
#endif
|
||||
struct rb4xx_cpld *cpld = nand->cpld;
|
||||
u8 data = dat;
|
||||
|
||||
if (ctrl & NAND_CTRL_CHANGE) {
|
||||
gpiod_set_value_cansleep(nand->cle, !!(ctrl & NAND_CLE));
|
||||
gpiod_set_value_cansleep(nand->ale, !!(ctrl & NAND_ALE));
|
||||
gpiod_set_value_cansleep(nand->nce, !(ctrl & NAND_NCE));
|
||||
}
|
||||
|
||||
if (dat != NAND_CMD_NONE)
|
||||
cpld->write_nand(cpld, &data, 1);
|
||||
}
|
||||
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(4,20,0)
|
||||
static int rb4xx_nand_dev_ready(struct mtd_info *mtd)
|
||||
{
|
||||
struct rb4xx_nand *nand = mtd->priv;
|
||||
#else
|
||||
static int rb4xx_nand_dev_ready(struct nand_chip *chip)
|
||||
{
|
||||
struct rb4xx_nand *nand = chip->priv;
|
||||
#endif
|
||||
|
||||
return gpiod_get_value_cansleep(nand->rdy);
|
||||
}
|
||||
|
||||
static int rb4xx_nand_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct device *dev = &pdev->dev;
|
||||
struct device *parent = dev->parent;
|
||||
struct rb4xx_nand *nand;
|
||||
struct mtd_info *mtd;
|
||||
int ret;
|
||||
|
||||
if (!parent)
|
||||
return -ENODEV;
|
||||
|
||||
nand = devm_kzalloc(dev, sizeof(*nand), GFP_KERNEL);
|
||||
if (!nand)
|
||||
return -ENOMEM;
|
||||
|
||||
platform_set_drvdata(pdev, nand);
|
||||
nand->cpld = dev_get_drvdata(parent);
|
||||
nand->dev = dev;
|
||||
|
||||
nand->ale = devm_gpiod_get_index(dev, NULL, 0, GPIOD_OUT_LOW);
|
||||
if (IS_ERR(nand->ale))
|
||||
dev_err(dev, "missing gpio ALE: %ld\n", PTR_ERR(nand->ale));
|
||||
|
||||
nand->cle = devm_gpiod_get_index(dev, NULL, 1, GPIOD_OUT_LOW);
|
||||
if (IS_ERR(nand->cle))
|
||||
dev_err(dev, "missing gpio CLE: %ld\n", PTR_ERR(nand->cle));
|
||||
|
||||
nand->nce = devm_gpiod_get_index(dev, NULL, 2, GPIOD_OUT_LOW);
|
||||
if (IS_ERR(nand->nce))
|
||||
dev_err(dev, "missing gpio nCE: %ld\n", PTR_ERR(nand->nce));
|
||||
|
||||
nand->rdy = devm_gpiod_get_index(dev, NULL, 3, GPIOD_IN);
|
||||
if (IS_ERR(nand->rdy))
|
||||
dev_err(dev, "missing gpio RDY: %ld\n", PTR_ERR(nand->rdy));
|
||||
|
||||
if (IS_ERR(nand->ale) || IS_ERR(nand->cle) ||
|
||||
IS_ERR(nand->nce) || IS_ERR(nand->rdy))
|
||||
return -ENOENT;
|
||||
|
||||
gpiod_set_consumer_name(nand->ale, "mikrotik:nand:ALE");
|
||||
gpiod_set_consumer_name(nand->cle, "mikrotik:nand:CLE");
|
||||
gpiod_set_consumer_name(nand->nce, "mikrotik:nand:nCE");
|
||||
gpiod_set_consumer_name(nand->rdy, "mikrotik:nand:RDY");
|
||||
|
||||
mtd = nand_to_mtd(&nand->chip);
|
||||
mtd->priv = nand;
|
||||
mtd->owner = THIS_MODULE;
|
||||
mtd->dev.parent = dev;
|
||||
mtd_set_of_node(mtd, dev->of_node);
|
||||
|
||||
if (mtd->writesize == 512)
|
||||
mtd_set_ooblayout(mtd, &rb4xx_nand_ecclayout_ops);
|
||||
|
||||
nand->chip.ecc.mode = NAND_ECC_SOFT;
|
||||
nand->chip.ecc.algo = NAND_ECC_HAMMING;
|
||||
nand->chip.options = NAND_NO_SUBPAGE_WRITE;
|
||||
nand->chip.priv = nand;
|
||||
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(4,20,0)
|
||||
nand->chip.read_byte = rb4xx_nand_read_byte;
|
||||
nand->chip.write_buf = rb4xx_nand_write_buf;
|
||||
nand->chip.read_buf = rb4xx_nand_read_buf;
|
||||
nand->chip.cmd_ctrl = rb4xx_nand_cmd_ctrl;
|
||||
nand->chip.dev_ready = rb4xx_nand_dev_ready;
|
||||
nand->chip.chip_delay = 25;
|
||||
|
||||
ret = nand_scan(mtd, 1);
|
||||
#else
|
||||
nand->chip.legacy.read_byte = rb4xx_nand_read_byte;
|
||||
nand->chip.legacy.write_buf = rb4xx_nand_write_buf;
|
||||
nand->chip.legacy.read_buf = rb4xx_nand_read_buf;
|
||||
nand->chip.legacy.cmd_ctrl = rb4xx_nand_cmd_ctrl;
|
||||
nand->chip.legacy.dev_ready = rb4xx_nand_dev_ready;
|
||||
nand->chip.legacy.chip_delay = 25;
|
||||
|
||||
ret = nand_scan(&nand->chip, 1);
|
||||
#endif
|
||||
if (ret)
|
||||
return -ENXIO;
|
||||
|
||||
ret = mtd_device_register(mtd, NULL, 0);
|
||||
if (ret) {
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(4,20,0)
|
||||
nand_release(mtd);
|
||||
#else
|
||||
nand_release(&nand->chip);
|
||||
#endif
|
||||
return ret;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int rb4xx_nand_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct rb4xx_nand *nand = platform_get_drvdata(pdev);
|
||||
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(4,20,0)
|
||||
nand_release(nand_to_mtd(&nand->chip));
|
||||
#else
|
||||
nand_release(&nand->chip);
|
||||
#endif
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct platform_device_id rb4xx_nand_id_table[] = {
|
||||
{ "mikrotik,rb4xx-nand", },
|
||||
{ },
|
||||
};
|
||||
MODULE_DEVICE_TABLE(platform, rb4xx_nand_id_table);
|
||||
|
||||
static struct platform_driver rb4xx_nand_driver = {
|
||||
.probe = rb4xx_nand_probe,
|
||||
.remove = rb4xx_nand_remove,
|
||||
.id_table = rb4xx_nand_id_table,
|
||||
.driver = {
|
||||
.name = "rb4xx-nand",
|
||||
},
|
||||
};
|
||||
|
||||
module_platform_driver(rb4xx_nand_driver);
|
||||
|
||||
MODULE_DESCRIPTION("Mikrotik RB4xx NAND driver");
|
||||
MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
|
||||
MODULE_AUTHOR("Imre Kaloz <kaloz@openwrt.org>");
|
||||
MODULE_AUTHOR("Bert Vermeulen <bert@biot.com>");
|
||||
MODULE_AUTHOR("Christopher Hill <ch6574@gmail.com");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
@ -0,0 +1,25 @@
|
||||
// SPDX-License-Identifier: GPL-2.0-only
|
||||
/*
|
||||
* CPLD driver for the MikroTik RouterBoard 4xx series
|
||||
*
|
||||
* Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
|
||||
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
|
||||
* Copyright (C) 2015 Bert Vermeulen <bert@biot.com>
|
||||
* Copyright (C) 2020 Christopher Hill <ch6574@gmail.com>
|
||||
*
|
||||
* This file was based on the driver for Linux 2.6.22 published by
|
||||
* MikroTik for their RouterBoard 4xx series devices.
|
||||
*/
|
||||
#include <linux/spi/spi.h>
|
||||
|
||||
struct rb4xx_cpld {
|
||||
struct spi_device *spi;
|
||||
|
||||
int (*write_nand)(struct rb4xx_cpld *self, const void *tx_buf,
|
||||
unsigned int len);
|
||||
int (*read_nand)(struct rb4xx_cpld *self, void *rx_buf,
|
||||
unsigned int len);
|
||||
|
||||
int (*gpio_set_0_7)(struct rb4xx_cpld *self, u8 values);
|
||||
int (*gpio_set_8)(struct rb4xx_cpld *self, u8 value);
|
||||
};
|
||||
@ -0,0 +1,69 @@
|
||||
--- a/drivers/mfd/Kconfig
|
||||
+++ b/drivers/mfd/Kconfig
|
||||
@@ -1899,5 +1899,13 @@ config RAVE_SP_CORE
|
||||
Select this to get support for the Supervisory Processor
|
||||
device found on several devices in RAVE line of hardware.
|
||||
|
||||
+config MFD_RB4XX_CPLD
|
||||
+ tristate "CPLD driver for Mikrotik RB4xx series boards
|
||||
+ select MFD_CORE
|
||||
+ depends on ATH79 || COMPILE_TEST
|
||||
+ help
|
||||
+ Enables support for the CPLD chip (NAND & GPIO) on Mikrotik
|
||||
+ Routerboard RB4xx series.
|
||||
+
|
||||
endmenu
|
||||
endif
|
||||
--- a/drivers/mfd/Makefile
|
||||
+++ b/drivers/mfd/Makefile
|
||||
@@ -241,3 +241,4 @@ obj-$(CONFIG_MFD_SC27XX_PMIC) += sprd-sc
|
||||
obj-$(CONFIG_RAVE_SP_CORE) += rave-sp.o
|
||||
obj-$(CONFIG_MFD_ROHM_BD718XX) += rohm-bd718x7.o
|
||||
|
||||
+obj-$(CONFIG_MFD_RB4XX_CPLD) += rb4xx-cpld.o
|
||||
--- a/drivers/gpio/Kconfig
|
||||
+++ b/drivers/gpio/Kconfig
|
||||
@@ -1371,6 +1371,12 @@ config GPIO_XRA1403
|
||||
help
|
||||
GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
|
||||
|
||||
+config GPIO_RB4XX
|
||||
+ tristate "GPIO expander for Mikrotik RB4xx series boards"
|
||||
+ depends on MFD_RB4XX_CPLD
|
||||
+ help
|
||||
+ GPIO driver for Mikrotik Routerboard RB4xx series.
|
||||
+
|
||||
endmenu
|
||||
|
||||
menu "USB GPIO expanders"
|
||||
--- a/drivers/gpio/Makefile
|
||||
+++ b/drivers/gpio/Makefile
|
||||
@@ -159,3 +159,4 @@ obj-$(CONFIG_GPIO_ZEVIO) += gpio-zevio.o
|
||||
obj-$(CONFIG_GPIO_ZYNQ) += gpio-zynq.o
|
||||
obj-$(CONFIG_GPIO_ZX) += gpio-zx.o
|
||||
obj-$(CONFIG_GPIO_LOONGSON1) += gpio-loongson1.o
|
||||
+obj-$(CONFIG_GPIO_RB4XX) += gpio-rb4xx.o
|
||||
--- a/drivers/mtd/nand/raw/Kconfig
|
||||
+++ b/drivers/mtd/nand/raw/Kconfig
|
||||
@@ -569,4 +569,11 @@ config MTD_NAND_AR934X
|
||||
Enables support for NAND controller on Qualcomm Atheros SoCs.
|
||||
This controller is found on AR934x and QCA955x SoCs.
|
||||
|
||||
+config MTD_NAND_RB4XX
|
||||
+ tristate "Support for NAND driver for Mikrotik RB4xx series boards"
|
||||
+ depends on MFD_RB4XX_CPLD
|
||||
+ help
|
||||
+ Enables support for the NAND flash chip on Mikrotik Routerboard
|
||||
+ RB4xx series.
|
||||
+
|
||||
endif # MTD_NAND
|
||||
--- a/drivers/mtd/nand/raw/Makefile
|
||||
+++ b/drivers/mtd/nand/raw/Makefile
|
||||
@@ -58,6 +58,7 @@ obj-$(CONFIG_MTD_NAND_QCOM) += qcom_nan
|
||||
obj-$(CONFIG_MTD_NAND_MTK) += mtk_ecc.o mtk_nand.o
|
||||
obj-$(CONFIG_MTD_NAND_TEGRA) += tegra_nand.o
|
||||
obj-$(CONFIG_MTD_NAND_AR934X) += ar934x_nand.o
|
||||
+obj-$(CONFIG_MTD_NAND_RB4XX) += nand_rb4xx.o
|
||||
|
||||
nand-objs := nand_base.o nand_bbt.o nand_timings.o nand_ids.o
|
||||
nand-objs += nand_amd.o
|
||||
@ -0,0 +1,72 @@
|
||||
--- a/drivers/mfd/Kconfig
|
||||
+++ b/drivers/mfd/Kconfig
|
||||
@@ -2012,5 +2012,13 @@ config RAVE_SP_CORE
|
||||
Select this to get support for the Supervisory Processor
|
||||
device found on several devices in RAVE line of hardware.
|
||||
|
||||
+config MFD_RB4XX_CPLD
|
||||
+ tristate "CPLD driver for Mikrotik RB4xx series boards
|
||||
+ select MFD_CORE
|
||||
+ depends on ATH79 || COMPILE_TEST
|
||||
+ help
|
||||
+ Enables support for the CPLD chip (NAND & GPIO) on Mikrotik
|
||||
+ Routerboard RB4xx series.
|
||||
+
|
||||
endmenu
|
||||
endif
|
||||
--- a/drivers/mfd/Makefile
|
||||
+++ b/drivers/mfd/Makefile
|
||||
@@ -256,3 +256,4 @@ obj-$(CONFIG_MFD_ROHM_BD70528) += rohm-b
|
||||
obj-$(CONFIG_MFD_ROHM_BD718XX) += rohm-bd718x7.o
|
||||
obj-$(CONFIG_MFD_STMFX) += stmfx.o
|
||||
|
||||
+obj-$(CONFIG_MFD_RB4XX_CPLD) += rb4xx-cpld.o
|
||||
--- a/drivers/gpio/Kconfig
|
||||
+++ b/drivers/gpio/Kconfig
|
||||
@@ -1406,6 +1406,12 @@ config GPIO_SODAVILLE
|
||||
help
|
||||
Say Y here to support Intel Sodaville GPIO.
|
||||
|
||||
+config GPIO_RB4XX
|
||||
+ tristate "GPIO expander for Mikrotik RB4xx series boards"
|
||||
+ depends on MFD_RB4XX_CPLD
|
||||
+ help
|
||||
+ GPIO driver for Mikrotik Routerboard RB4xx series.
|
||||
+
|
||||
endmenu
|
||||
|
||||
menu "SPI GPIO expanders"
|
||||
--- a/drivers/gpio/Makefile
|
||||
+++ b/drivers/gpio/Makefile
|
||||
@@ -113,6 +113,7 @@ obj-$(CONFIG_GPIO_PL061) += gpio-pl061.
|
||||
obj-$(CONFIG_GPIO_PMIC_EIC_SPRD) += gpio-pmic-eic-sprd.o
|
||||
obj-$(CONFIG_GPIO_PXA) += gpio-pxa.o
|
||||
obj-$(CONFIG_GPIO_RASPBERRYPI_EXP) += gpio-raspberrypi-exp.o
|
||||
+obj-$(CONFIG_GPIO_RB4XX) += gpio-rb4xx.o
|
||||
obj-$(CONFIG_GPIO_RC5T583) += gpio-rc5t583.o
|
||||
obj-$(CONFIG_GPIO_RCAR) += gpio-rcar.o
|
||||
obj-$(CONFIG_GPIO_RDC321X) += gpio-rdc321x.o
|
||||
--- a/drivers/mtd/nand/raw/Kconfig
|
||||
+++ b/drivers/mtd/nand/raw/Kconfig
|
||||
@@ -552,4 +552,11 @@ config MTD_NAND_AR934X
|
||||
Enables support for NAND controller on Qualcomm Atheros SoCs.
|
||||
This controller is found on AR934x and QCA955x SoCs.
|
||||
|
||||
+config MTD_NAND_RB4XX
|
||||
+ tristate "Support for NAND driver for Mikrotik RB4xx series boards"
|
||||
+ depends on MFD_RB4XX_CPLD
|
||||
+ help
|
||||
+ Enables support for the NAND flash chip on Mikrotik Routerboard
|
||||
+ RB4xx series.
|
||||
+
|
||||
endif # MTD_RAW_NAND
|
||||
--- a/drivers/mtd/nand/raw/Makefile
|
||||
+++ b/drivers/mtd/nand/raw/Makefile
|
||||
@@ -58,6 +58,7 @@ obj-$(CONFIG_MTD_NAND_TEGRA) += tegra_n
|
||||
obj-$(CONFIG_MTD_NAND_STM32_FMC2) += stm32_fmc2_nand.o
|
||||
obj-$(CONFIG_MTD_NAND_MESON) += meson_nand.o
|
||||
obj-$(CONFIG_MTD_NAND_AR934X) += ar934x_nand.o
|
||||
+obj-$(CONFIG_MTD_NAND_RB4XX) += nand_rb4xx.o
|
||||
|
||||
nand-objs := nand_base.o nand_legacy.o nand_bbt.o nand_timings.o nand_ids.o
|
||||
nand-objs += nand_onfi.o
|
||||
Loading…
Reference in New Issue