update kernels

1 files changed, 548 insertions, 0 deletions

diff --git a/target/mips/mikrotik-rb4xx/patches/3.14.22/0007-spi-add-rb4xx-cpld-driver.patch b/target/mips/mikrotik-rb4xx/patches/3.14.22/0007-spi-add-rb4xx-cpld-driver.patch
new file mode 100644
index 000000000..452f2e761
--- /dev/null
+++ b/target/mips/mikrotik-rb4xx/patches/3.14.22/0007-spi-add-rb4xx-cpld-driver.patch
@@ -0,0 +1,548 @@
+From bb8d2a4ebf63bc2f04f15a28c92652700416ff83 Mon Sep 17 00:00:00 2001
+From: Phil Sutter <phil@nwl.cc>
+Date: Tue, 13 May 2014 00:20:04 +0200
+Subject: [PATCH] spi: add rb4xx cpld driver
+
+---
+ arch/mips/include/asm/mach-ath79/rb4xx_cpld.h |  48 +++
+ drivers/spi/Kconfig                           |   7 +
+ drivers/spi/Makefile                          |   1 +
+ drivers/spi/spi-rb4xx-cpld.c                  | 441 ++++++++++++++++++++++++++
+ 4 files changed, 497 insertions(+)
+ create mode 100644 arch/mips/include/asm/mach-ath79/rb4xx_cpld.h
+ create mode 100644 drivers/spi/spi-rb4xx-cpld.c
+
+diff --git a/arch/mips/include/asm/mach-ath79/rb4xx_cpld.h b/arch/mips/include/asm/mach-ath79/rb4xx_cpld.h
+new file mode 100644
+index 0000000..5b17e94
+--- /dev/null
++++ b/arch/mips/include/asm/mach-ath79/rb4xx_cpld.h
+@@ -0,0 +1,48 @@
++/*
++ * SPI driver definitions for the CPLD chip on the Mikrotik RB4xx boards
++ *
++ * Copyright (C) 2010 Gabor Juhos <juhosg@openwrt.org>
++ *
++ * This file was based on the patches for Linux 2.6.27.39 published by
++ * MikroTik for their RouterBoard 4xx series devices.
++ *
++ * 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 published
++ * by the Free Software Foundation.
++ */
++
++#define CPLD_GPIO_nLED1		0
++#define CPLD_GPIO_nLED2		1
++#define CPLD_GPIO_nLED3		2
++#define CPLD_GPIO_nLED4		3
++#define CPLD_GPIO_FAN		4
++#define CPLD_GPIO_ALE		5
++#define CPLD_GPIO_CLE		6
++#define CPLD_GPIO_nCE		7
++#define CPLD_GPIO_nLED5		8
++
++#define CPLD_NUM_GPIOS		9
++
++#define CPLD_CFG_nLED1		BIT(CPLD_GPIO_nLED1)
++#define CPLD_CFG_nLED2		BIT(CPLD_GPIO_nLED2)
++#define CPLD_CFG_nLED3		BIT(CPLD_GPIO_nLED3)
++#define CPLD_CFG_nLED4		BIT(CPLD_GPIO_nLED4)
++#define CPLD_CFG_FAN		BIT(CPLD_GPIO_FAN)
++#define CPLD_CFG_ALE		BIT(CPLD_GPIO_ALE)
++#define CPLD_CFG_CLE		BIT(CPLD_GPIO_CLE)
++#define CPLD_CFG_nCE		BIT(CPLD_GPIO_nCE)
++#define CPLD_CFG_nLED5		BIT(CPLD_GPIO_nLED5)
++
++struct rb4xx_cpld_platform_data {
++	unsigned	gpio_base;
++};
++
++extern int rb4xx_cpld_change_cfg(unsigned mask, unsigned value);
++extern int rb4xx_cpld_read(unsigned char *rx_buf,
++			   const unsigned char *verify_buf,
++			   unsigned cnt);
++extern int rb4xx_cpld_read_from(unsigned addr,
++				unsigned char *rx_buf,
++				const unsigned char *verify_buf,
++				unsigned cnt);
++extern int rb4xx_cpld_write(const unsigned char *buf, unsigned count);
+diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
+index 721f3a7..dbd7e98 100644
+--- a/drivers/spi/Kconfig
++++ b/drivers/spi/Kconfig
+@@ -577,6 +577,13 @@ config SPI_TLE62X0
+ 	  sysfs interface, with each line presented as a kind of GPIO
+ 	  exposing both switch control and diagnostic feedback.
+ 
++config SPI_RB4XX_CPLD
++	tristate "MikroTik RB4XX CPLD driver"
++	depends on ATH79_MACH_RB4XX
++	help
++	  SPI driver for the Xilinx CPLD chip present on the
++	  MikroTik RB4xx boards.
++
+ #
+ # Add new SPI protocol masters in alphabetical order above this line
+ #
+diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile
+index e738c7a..50913ae 100644
+--- a/drivers/spi/Makefile
++++ b/drivers/spi/Makefile
+@@ -60,6 +60,7 @@ spi-pxa2xx-platform-$(CONFIG_SPI_PXA2XX_DMA)	+= spi-pxa2xx-dma.o
+ obj-$(CONFIG_SPI_PXA2XX)		+= spi-pxa2xx-platform.o
+ obj-$(CONFIG_SPI_PXA2XX_PCI)		+= spi-pxa2xx-pci.o
+ obj-$(CONFIG_SPI_RB4XX)			+= spi-rb4xx.o
++obj-$(CONFIG_SPI_RB4XX_CPLD)		+= spi-rb4xx-cpld.o
+ obj-$(CONFIG_SPI_RSPI)			+= spi-rspi.o
+ obj-$(CONFIG_SPI_S3C24XX)		+= spi-s3c24xx-hw.o
+ spi-s3c24xx-hw-y			:= spi-s3c24xx.o
+diff --git a/drivers/spi/spi-rb4xx-cpld.c b/drivers/spi/spi-rb4xx-cpld.c
+new file mode 100644
+index 0000000..a8d5282
+--- /dev/null
++++ b/drivers/spi/spi-rb4xx-cpld.c
+@@ -0,0 +1,441 @@
++/*
++ * SPI driver for the CPLD chip on the Mikrotik RB4xx boards
++ *
++ * Copyright (C) 2010 Gabor Juhos <juhosg@openwrt.org>
++ *
++ * This file was based on the patches for Linux 2.6.27.39 published by
++ * MikroTik for their RouterBoard 4xx series devices.
++ *
++ * 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 published
++ * by the Free Software Foundation.
++ */
++
++#include <linux/types.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/init.h>
++#include <linux/module.h>
++#include <linux/device.h>
++#include <linux/bitops.h>
++#include <linux/spi/spi.h>
++#include <linux/gpio.h>
++#include <linux/slab.h>
++
++#include <asm/mach-ath79/rb4xx_cpld.h>
++
++#define DRV_NAME	"spi-rb4xx-cpld"
++#define DRV_DESC	"RB4xx CPLD driver"
++#define DRV_VERSION	"0.1.0"
++
++#define CPLD_CMD_WRITE_NAND	0x08 /* send cmd, n x send data, send indle */
++#define CPLD_CMD_WRITE_CFG	0x09 /* send cmd, n x send cfg */
++#define CPLD_CMD_READ_NAND	0x0a /* send cmd, send idle, n x read data */
++#define CPLD_CMD_READ_FAST	0x0b /* send cmd, 4 x idle, n x read data */
++#define CPLD_CMD_LED5_ON	0x0c /* send cmd */
++#define CPLD_CMD_LED5_OFF	0x0d /* send cmd */
++
++struct rb4xx_cpld {
++	struct spi_device	*spi;
++	struct mutex		lock;
++	struct gpio_chip	chip;
++	unsigned int		config;
++};
++
++static struct rb4xx_cpld *rb4xx_cpld;
++
++static inline struct rb4xx_cpld *gpio_to_cpld(struct gpio_chip *chip)
++{
++	return container_of(chip, struct rb4xx_cpld, chip);
++}
++
++static int rb4xx_cpld_write_cmd(struct rb4xx_cpld *cpld, unsigned char cmd)
++{
++	struct spi_transfer t[1];
++	struct spi_message m;
++	unsigned char tx_buf[1];
++	int err;
++
++	spi_message_init(&m);
++	memset(&t, 0, sizeof(t));
++
++	t[0].tx_buf = tx_buf;
++	t[0].len = sizeof(tx_buf);
++	spi_message_add_tail(&t[0], &m);
++
++	tx_buf[0] = cmd;
++
++	err = spi_sync(cpld->spi, &m);
++	return err;
++}
++
++static int rb4xx_cpld_write_cfg(struct rb4xx_cpld *cpld, unsigned char config)
++{
++	struct spi_transfer t[1];
++	struct spi_message m;
++	unsigned char cmd[2];
++	int err;
++
++	spi_message_init(&m);
++	memset(&t, 0, sizeof(t));
++
++	t[0].tx_buf = cmd;
++	t[0].len = sizeof(cmd);
++	spi_message_add_tail(&t[0], &m);
++
++	cmd[0] = CPLD_CMD_WRITE_CFG;
++	cmd[1] = config;
++
++	err = spi_sync(cpld->spi, &m);
++	return err;
++}
++
++static int __rb4xx_cpld_change_cfg(struct rb4xx_cpld *cpld, unsigned mask,
++				   unsigned value)
++{
++	unsigned int config;
++	int err;
++
++	config = cpld->config & ~mask;
++	config |= value;
++
++	if ((cpld->config ^ config) & 0xff) {
++		err = rb4xx_cpld_write_cfg(cpld, config);
++		if (err)
++			return err;
++	}
++
++	if ((cpld->config ^ config) & CPLD_CFG_nLED5) {
++		err = rb4xx_cpld_write_cmd(cpld, (value) ? CPLD_CMD_LED5_ON :
++							   CPLD_CMD_LED5_OFF);
++		if (err)
++			return err;
++	}
++
++	cpld->config = config;
++	return 0;
++}
++
++int rb4xx_cpld_change_cfg(unsigned mask, unsigned value)
++{
++	int ret;
++
++	if (rb4xx_cpld == NULL)
++		return -ENODEV;
++
++	mutex_lock(&rb4xx_cpld->lock);
++	ret = __rb4xx_cpld_change_cfg(rb4xx_cpld, mask, value);
++	mutex_unlock(&rb4xx_cpld->lock);
++
++	return ret;
++}
++EXPORT_SYMBOL_GPL(rb4xx_cpld_change_cfg);
++
++int rb4xx_cpld_read_from(unsigned addr, unsigned char *rx_buf,
++			 const unsigned char *verify_buf, unsigned count)
++{
++	const unsigned char cmd[5] = {
++		CPLD_CMD_READ_FAST,
++		(addr >> 16) & 0xff,
++		(addr >> 8) & 0xff,
++		 addr & 0xff,
++		 0
++	};
++	struct spi_transfer t[2] = {
++		{
++			.tx_buf = &cmd,
++			.len = 5,
++		},
++		{
++			.tx_buf = verify_buf,
++			.rx_buf = rx_buf,
++			.len = count,
++			.verify = (verify_buf != NULL),
++		},
++	};
++	struct spi_message m;
++
++	if (rb4xx_cpld == NULL)
++		return -ENODEV;
++
++	spi_message_init(&m);
++	m.fast_read = 1;
++	spi_message_add_tail(&t[0], &m);
++	spi_message_add_tail(&t[1], &m);
++	return spi_sync(rb4xx_cpld->spi, &m);
++}
++EXPORT_SYMBOL_GPL(rb4xx_cpld_read_from);
++
++#if 0
++int rb4xx_cpld_read(unsigned char *buf, unsigned char *verify_buf,
++		    unsigned count)
++{
++	struct spi_transfer t[2];
++	struct spi_message m;
++	unsigned char cmd[2];
++
++	if (rb4xx_cpld == NULL)
++		return -ENODEV;
++
++	spi_message_init(&m);
++	memset(&t, 0, sizeof(t));
++
++	/* send command */
++	t[0].tx_buf = cmd;
++	t[0].len = sizeof(cmd);
++	spi_message_add_tail(&t[0], &m);
++
++	cmd[0] = CPLD_CMD_READ_NAND;
++	cmd[1] = 0;
++
++	/* read data */
++	t[1].rx_buf = buf;
++	t[1].len = count;
++	spi_message_add_tail(&t[1], &m);
++
++	return spi_sync(rb4xx_cpld->spi, &m);
++}
++#else
++int rb4xx_cpld_read(unsigned char *rx_buf, const unsigned char *verify_buf,
++		    unsigned count)
++{
++	static const unsigned char cmd[2] = { CPLD_CMD_READ_NAND, 0 };
++	struct spi_transfer t[2] = {
++		{
++			.tx_buf = &cmd,
++			.len = 2,
++		}, {
++			.tx_buf = verify_buf,
++			.rx_buf = rx_buf,
++			.len = count,
++			.verify = (verify_buf != NULL),
++		},
++	};
++	struct spi_message m;
++
++	if (rb4xx_cpld == NULL)
++		return -ENODEV;
++
++	spi_message_init(&m);
++	spi_message_add_tail(&t[0], &m);
++	spi_message_add_tail(&t[1], &m);
++	return spi_sync(rb4xx_cpld->spi, &m);
++}
++#endif
++EXPORT_SYMBOL_GPL(rb4xx_cpld_read);
++
++int rb4xx_cpld_write(const unsigned char *buf, unsigned count)
++{
++#if 0
++	struct spi_transfer t[3];
++	struct spi_message m;
++	unsigned char cmd[1];
++
++	if (rb4xx_cpld == NULL)
++		return -ENODEV;
++
++	memset(&t, 0, sizeof(t));
++	spi_message_init(&m);
++
++	/* send command */
++	t[0].tx_buf = cmd;
++	t[0].len = sizeof(cmd);
++	spi_message_add_tail(&t[0], &m);
++
++	cmd[0] = CPLD_CMD_WRITE_NAND;
++
++	/* write data */
++	t[1].tx_buf = buf;
++	t[1].len = count;
++	spi_message_add_tail(&t[1], &m);
++
++	/* send idle */
++	t[2].len = 1;
++	spi_message_add_tail(&t[2], &m);
++
++	return spi_sync(rb4xx_cpld->spi, &m);
++#else
++	static const unsigned char cmd = CPLD_CMD_WRITE_NAND;
++	struct spi_transfer t[3] = {
++		{
++			.tx_buf = &cmd,
++			.len = 1,
++		}, {
++			.tx_buf = buf,
++			.len = count,
++			.fast_write = 1,
++		}, {
++			.len = 1,
++			.fast_write = 1,
++		},
++	};
++	struct spi_message m;
++
++	if (rb4xx_cpld == NULL)
++		return -ENODEV;
++
++	spi_message_init(&m);
++	spi_message_add_tail(&t[0], &m);
++	spi_message_add_tail(&t[1], &m);
++	spi_message_add_tail(&t[2], &m);
++	return spi_sync(rb4xx_cpld->spi, &m);
++#endif
++}
++EXPORT_SYMBOL_GPL(rb4xx_cpld_write);
++
++static int rb4xx_cpld_gpio_get(struct gpio_chip *chip, unsigned offset)
++{
++	struct rb4xx_cpld *cpld = gpio_to_cpld(chip);
++	int ret;
++
++	mutex_lock(&cpld->lock);
++	ret = (cpld->config >> offset) & 1;
++	mutex_unlock(&cpld->lock);
++
++	return ret;
++}
++
++static void rb4xx_cpld_gpio_set(struct gpio_chip *chip, unsigned offset,
++				int value)
++{
++	struct rb4xx_cpld *cpld = gpio_to_cpld(chip);
++
++	mutex_lock(&cpld->lock);
++	__rb4xx_cpld_change_cfg(cpld, (1 << offset), !!value << offset);
++	mutex_unlock(&cpld->lock);
++}
++
++static int rb4xx_cpld_gpio_direction_input(struct gpio_chip *chip,
++					   unsigned offset)
++{
++	return -EOPNOTSUPP;
++}
++
++static int rb4xx_cpld_gpio_direction_output(struct gpio_chip *chip,
++					    unsigned offset,
++					    int value)
++{
++	struct rb4xx_cpld *cpld = gpio_to_cpld(chip);
++	int ret;
++
++	mutex_lock(&cpld->lock);
++	ret = __rb4xx_cpld_change_cfg(cpld, (1 << offset), !!value << offset);
++	mutex_unlock(&cpld->lock);
++
++	return ret;
++}
++
++static int rb4xx_cpld_gpio_init(struct rb4xx_cpld *cpld, unsigned int base)
++{
++	int err;
++
++	/* init config */
++	cpld->config = CPLD_CFG_nLED1 | CPLD_CFG_nLED2 | CPLD_CFG_nLED3 |
++		       CPLD_CFG_nLED4 | CPLD_CFG_nCE;
++	rb4xx_cpld_write_cfg(cpld, cpld->config);
++
++	/* setup GPIO chip */
++	cpld->chip.label = DRV_NAME;
++
++	cpld->chip.get = rb4xx_cpld_gpio_get;
++	cpld->chip.set = rb4xx_cpld_gpio_set;
++	cpld->chip.direction_input = rb4xx_cpld_gpio_direction_input;
++	cpld->chip.direction_output = rb4xx_cpld_gpio_direction_output;
++
++	cpld->chip.base = base;
++	cpld->chip.ngpio = CPLD_NUM_GPIOS;
++	cpld->chip.can_sleep = 1;
++	cpld->chip.dev = &cpld->spi->dev;
++	cpld->chip.owner = THIS_MODULE;
++
++	err = gpiochip_add(&cpld->chip);
++	if (err)
++		dev_err(&cpld->spi->dev, "adding GPIO chip failed, err=%d\n",
++			err);
++
++	return err;
++}
++
++static int rb4xx_cpld_probe(struct spi_device *spi)
++{
++	struct rb4xx_cpld *cpld;
++	struct rb4xx_cpld_platform_data *pdata;
++	int err;
++
++	pdata = spi->dev.platform_data;
++	if (!pdata) {
++		dev_dbg(&spi->dev, "no platform data\n");
++		return -EINVAL;
++	}
++
++	cpld = kzalloc(sizeof(*cpld), GFP_KERNEL);
++	if (!cpld) {
++		dev_err(&spi->dev, "no memory for private data\n");
++		return -ENOMEM;
++	}
++
++	mutex_init(&cpld->lock);
++	cpld->spi = spi_dev_get(spi);
++	dev_set_drvdata(&spi->dev, cpld);
++
++	spi->mode = SPI_MODE_0;
++	spi->bits_per_word = 8;
++	err = spi_setup(spi);
++	if (err) {
++		dev_err(&spi->dev, "spi_setup failed, err=%d\n", err);
++		goto err_drvdata;
++	}
++
++	err = rb4xx_cpld_gpio_init(cpld, pdata->gpio_base);
++	if (err)
++		goto err_drvdata;
++
++	rb4xx_cpld = cpld;
++
++	return 0;
++
++err_drvdata:
++	dev_set_drvdata(&spi->dev, NULL);
++	kfree(cpld);
++
++	return err;
++}
++
++static int rb4xx_cpld_remove(struct spi_device *spi)
++{
++	struct rb4xx_cpld *cpld;
++
++	rb4xx_cpld = NULL;
++	cpld = dev_get_drvdata(&spi->dev);
++	dev_set_drvdata(&spi->dev, NULL);
++	kfree(cpld);
++
++	return 0;
++}
++
++static struct spi_driver rb4xx_cpld_driver = {
++	.driver = {
++		.name		= DRV_NAME,
++		.bus		= &spi_bus_type,
++		.owner		= THIS_MODULE,
++	},
++	.probe		= rb4xx_cpld_probe,
++	.remove		= rb4xx_cpld_remove,
++};
++
++static int __init rb4xx_cpld_init(void)
++{
++	return spi_register_driver(&rb4xx_cpld_driver);
++}
++module_init(rb4xx_cpld_init);
++
++static void __exit rb4xx_cpld_exit(void)
++{
++	spi_unregister_driver(&rb4xx_cpld_driver);
++}
++module_exit(rb4xx_cpld_exit);
++
++MODULE_DESCRIPTION(DRV_DESC);
++MODULE_VERSION(DRV_VERSION);
++MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
++MODULE_LICENSE("GPL v2");
+-- 
+1.8.5.3
+