ar71xx: drop target

This target has been mostly replaced by ath79 and won't be included
in the upcoming release anymore. Finally put it to rest.

This also removes all references in packages, tools, etc. as well as
the uboot-ar71xx and vsc73x5-ucode packages.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

1 files changed, 0 insertions, 430 deletions

diff --git a/target/linux/ar71xx/files/drivers/spi/spi-rb4xx.c b/target/linux/ar71xx/files/drivers/spi/spi-rb4xx.c
deleted file mode 100644
index 2d95e80495..0000000000
--- a/target/linux/ar71xx/files/drivers/spi/spi-rb4xx.c
+++ /dev/null
@@ -1,430 +0,0 @@
-/*
- * SPI controller driver for 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/clk.h>
-#include <linux/err.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/spinlock.h>
-#include <linux/workqueue.h>
-#include <linux/platform_device.h>
-#include <linux/spi/spi.h>
-
-#include <asm/mach-ath79/ar71xx_regs.h>
-#include <asm/mach-ath79/ath79.h>
-
-#define DRV_NAME	"rb4xx-spi"
-#define DRV_DESC	"Mikrotik RB4xx SPI controller driver"
-#define DRV_VERSION	"0.1.0"
-
-#define SPI_CTRL_FASTEST	0x40
-#define SPI_FLASH_HZ		33333334
-#define SPI_CPLD_HZ		33333334
-
-#define CPLD_CMD_READ_FAST	0x0b
-
-#undef RB4XX_SPI_DEBUG
-
-struct rb4xx_spi {
-	void __iomem		*base;
-	struct spi_master	*master;
-
-	unsigned		spi_ctrl_flash;
-	unsigned		spi_ctrl_fread;
-
-	struct clk		*ahb_clk;
-	unsigned long		ahb_freq;
-
-	spinlock_t		lock;
-	struct list_head	queue;
-	int			busy:1;
-	int			cs_wait;
-};
-
-static unsigned spi_clk_low = AR71XX_SPI_IOC_CS1;
-
-#ifdef RB4XX_SPI_DEBUG
-static inline void do_spi_delay(void)
-{
-	ndelay(20000);
-}
-#else
-static inline void do_spi_delay(void) { }
-#endif
-
-static inline void do_spi_init(struct spi_device *spi)
-{
-	unsigned cs = AR71XX_SPI_IOC_CS0 | AR71XX_SPI_IOC_CS1;
-
-	if (!(spi->mode & SPI_CS_HIGH))
-		cs ^= (spi->chip_select == 2) ? AR71XX_SPI_IOC_CS1 :
-						AR71XX_SPI_IOC_CS0;
-
-	spi_clk_low = cs;
-}
-
-static inline void do_spi_finish(void __iomem *base)
-{
-	do_spi_delay();
-	__raw_writel(AR71XX_SPI_IOC_CS0 | AR71XX_SPI_IOC_CS1,
-		     base + AR71XX_SPI_REG_IOC);
-}
-
-static inline void do_spi_clk(void __iomem *base, int bit)
-{
-	unsigned bval = spi_clk_low | ((bit & 1) ? AR71XX_SPI_IOC_DO : 0);
-
-	do_spi_delay();
-	__raw_writel(bval, base + AR71XX_SPI_REG_IOC);
-	do_spi_delay();
-	__raw_writel(bval | AR71XX_SPI_IOC_CLK, base + AR71XX_SPI_REG_IOC);
-}
-
-static void do_spi_byte(void __iomem *base, unsigned char byte)
-{
-	do_spi_clk(base, byte >> 7);
-	do_spi_clk(base, byte >> 6);
-	do_spi_clk(base, byte >> 5);
-	do_spi_clk(base, byte >> 4);
-	do_spi_clk(base, byte >> 3);
-	do_spi_clk(base, byte >> 2);
-	do_spi_clk(base, byte >> 1);
-	do_spi_clk(base, byte);
-
-	pr_debug("spi_byte sent 0x%02x got 0x%02x\n",
-	       (unsigned)byte,
-	       (unsigned char)__raw_readl(base + AR71XX_SPI_REG_RDS));
-}
-
-static inline void do_spi_clk_fast(void __iomem *base, unsigned bit1,
-				   unsigned bit2)
-{
-	unsigned bval = (spi_clk_low |
-			 ((bit1 & 1) ? AR71XX_SPI_IOC_DO : 0) |
-			 ((bit2 & 1) ? AR71XX_SPI_IOC_CS2 : 0));
-	do_spi_delay();
-	__raw_writel(bval, base + AR71XX_SPI_REG_IOC);
-	do_spi_delay();
-	__raw_writel(bval | AR71XX_SPI_IOC_CLK, base + AR71XX_SPI_REG_IOC);
-}
-
-static void do_spi_byte_fast(void __iomem *base, unsigned char byte)
-{
-	do_spi_clk_fast(base, byte >> 7, byte >> 6);
-	do_spi_clk_fast(base, byte >> 5, byte >> 4);
-	do_spi_clk_fast(base, byte >> 3, byte >> 2);
-	do_spi_clk_fast(base, byte >> 1, byte >> 0);
-
-	pr_debug("spi_byte_fast sent 0x%02x got 0x%02x\n",
-	       (unsigned)byte,
-	       (unsigned char) __raw_readl(base + AR71XX_SPI_REG_RDS));
-}
-
-static int rb4xx_spi_txrx(void __iomem *base, struct spi_transfer *t)
-{
-	const unsigned char *tx_ptr = t->tx_buf;
-	unsigned char *rx_ptr = t->rx_buf;
-	unsigned i;
-
-	pr_debug("spi_txrx len %u tx %u rx %u\n",
-	       t->len,
-	       (t->tx_buf ? 1 : 0),
-	       (t->rx_buf ? 1 : 0));
-
-	for (i = 0; i < t->len; ++i) {
-		unsigned char sdata = tx_ptr ? tx_ptr[i] : 0;
-
-		if (t->tx_nbits == SPI_NBITS_DUAL)
-			do_spi_byte_fast(base, sdata);
-		else
-			do_spi_byte(base, sdata);
-
-		if (rx_ptr)
-			rx_ptr[i] = __raw_readl(base + AR71XX_SPI_REG_RDS) & 0xff;
-	}
-
-	return i;
-}
-
-static int rb4xx_spi_msg(struct rb4xx_spi *rbspi, struct spi_message *m)
-{
-	struct spi_transfer *t = NULL;
-	void __iomem *base = rbspi->base;
-
-	m->status = 0;
-	if (list_empty(&m->transfers))
-		return -1;
-
-	__raw_writel(AR71XX_SPI_FS_GPIO, base + AR71XX_SPI_REG_FS);
-	__raw_writel(SPI_CTRL_FASTEST, base + AR71XX_SPI_REG_CTRL);
-	do_spi_init(m->spi);
-
-	list_for_each_entry(t, &m->transfers, transfer_list) {
-		int len;
-
-		len = rb4xx_spi_txrx(base, t);
-		if (len != t->len) {
-			m->status = -EMSGSIZE;
-			break;
-		}
-		m->actual_length += len;
-
-		if (t->cs_change) {
-			if (list_is_last(&t->transfer_list, &m->transfers)) {
-				/* wait for continuation */
-				return m->spi->chip_select;
-			}
-			do_spi_finish(base);
-			ndelay(100);
-		}
-	}
-
-	do_spi_finish(base);
-	__raw_writel(rbspi->spi_ctrl_flash, base + AR71XX_SPI_REG_CTRL);
-	__raw_writel(0, base + AR71XX_SPI_REG_FS);
-	return -1;
-}
-
-static void rb4xx_spi_process_queue_locked(struct rb4xx_spi *rbspi,
-					   unsigned long *flags)
-{
-	int cs = rbspi->cs_wait;
-
-	rbspi->busy = 1;
-	while (!list_empty(&rbspi->queue)) {
-		struct spi_message *m;
-
-		list_for_each_entry(m, &rbspi->queue, queue)
-			if (cs < 0 || cs == m->spi->chip_select)
-				break;
-
-		if (&m->queue == &rbspi->queue)
-			break;
-
-		list_del_init(&m->queue);
-		spin_unlock_irqrestore(&rbspi->lock, *flags);
-
-		cs = rb4xx_spi_msg(rbspi, m);
-		m->complete(m->context);
-
-		spin_lock_irqsave(&rbspi->lock, *flags);
-	}
-
-	rbspi->cs_wait = cs;
-	rbspi->busy = 0;
-
-	if (cs >= 0) {
-		/* TODO: add timer to unlock cs after 1s inactivity */
-	}
-}
-
-static int rb4xx_spi_transfer(struct spi_device *spi,
-			      struct spi_message *m)
-{
-	struct rb4xx_spi *rbspi = spi_master_get_devdata(spi->master);
-	unsigned long flags;
-
-	m->actual_length = 0;
-	m->status = -EINPROGRESS;
-
-	spin_lock_irqsave(&rbspi->lock, flags);
-	list_add_tail(&m->queue, &rbspi->queue);
-	if (rbspi->busy ||
-	    (rbspi->cs_wait >= 0 && rbspi->cs_wait != m->spi->chip_select)) {
-		/* job will be done later */
-		spin_unlock_irqrestore(&rbspi->lock, flags);
-		return 0;
-	}
-
-	/* process job in current context */
-	rb4xx_spi_process_queue_locked(rbspi, &flags);
-	spin_unlock_irqrestore(&rbspi->lock, flags);
-
-	return 0;
-}
-
-static int rb4xx_spi_setup(struct spi_device *spi)
-{
-	struct rb4xx_spi *rbspi = spi_master_get_devdata(spi->master);
-	unsigned long flags;
-
-	if (spi->mode & ~(SPI_CS_HIGH | SPI_TX_DUAL)) {
-		dev_err(&spi->dev, "mode %x not supported\n",
-			(unsigned) spi->mode);
-		return -EINVAL;
-	}
-
-	if (spi->bits_per_word != 8 && spi->bits_per_word != 0) {
-		dev_err(&spi->dev, "bits_per_word %u not supported\n",
-			(unsigned) spi->bits_per_word);
-		return -EINVAL;
-	}
-
-	spin_lock_irqsave(&rbspi->lock, flags);
-	if (rbspi->cs_wait == spi->chip_select && !rbspi->busy) {
-		rbspi->cs_wait = -1;
-		rb4xx_spi_process_queue_locked(rbspi, &flags);
-	}
-	spin_unlock_irqrestore(&rbspi->lock, flags);
-
-	return 0;
-}
-
-static unsigned get_spi_ctrl(struct rb4xx_spi *rbspi, unsigned hz_max,
-			     const char *name)
-{
-	unsigned div;
-
-	div = (rbspi->ahb_freq - 1) / (2 * hz_max);
-
-	/*
-	 * CPU has a bug at (div == 0) - first bit read is random
-	 */
-	if (div == 0)
-		++div;
-
-	if (name) {
-		unsigned ahb_khz = (rbspi->ahb_freq + 500) / 1000;
-		unsigned div_real = 2 * (div + 1);
-		pr_debug("rb4xx: %s SPI clock %u kHz (AHB %u kHz / %u)\n",
-		       name,
-		       ahb_khz / div_real,
-		       ahb_khz, div_real);
-	}
-
-	return SPI_CTRL_FASTEST + div;
-}
-
-static int rb4xx_spi_probe(struct platform_device *pdev)
-{
-	struct spi_master *master;
-	struct rb4xx_spi *rbspi;
-	struct resource *r;
-	int err = 0;
-
-	master = spi_alloc_master(&pdev->dev, sizeof(*rbspi));
-	if (master == NULL) {
-		dev_err(&pdev->dev, "no memory for spi_master\n");
-		err = -ENOMEM;
-		goto err_out;
-	}
-
-	master->bus_num = 0;
-	master->num_chipselect = 3;
-	master->mode_bits = SPI_TX_DUAL;
-	master->setup = rb4xx_spi_setup;
-	master->transfer = rb4xx_spi_transfer;
-
-	rbspi = spi_master_get_devdata(master);
-
-	rbspi->ahb_clk = clk_get(&pdev->dev, "ahb");
-	if (IS_ERR(rbspi->ahb_clk)) {
-		err = PTR_ERR(rbspi->ahb_clk);
-		goto err_put_master;
-	}
-
-	err = clk_prepare_enable(rbspi->ahb_clk);
-	if (err)
-		goto err_clk_put;
-
-	rbspi->ahb_freq = clk_get_rate(rbspi->ahb_clk);
-	if (!rbspi->ahb_freq) {
-		err = -EINVAL;
-		goto err_clk_disable;
-	}
-
-	platform_set_drvdata(pdev, rbspi);
-
-	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (r == NULL) {
-		err = -ENOENT;
-		goto err_clk_disable;
-	}
-
-	rbspi->base = ioremap(r->start, r->end - r->start + 1);
-	if (!rbspi->base) {
-		err = -ENXIO;
-		goto err_clk_disable;
-	}
-
-	rbspi->master = master;
-	rbspi->spi_ctrl_flash = get_spi_ctrl(rbspi, SPI_FLASH_HZ, "FLASH");
-	rbspi->spi_ctrl_fread = get_spi_ctrl(rbspi, SPI_CPLD_HZ, "CPLD");
-	rbspi->cs_wait = -1;
-
-	spin_lock_init(&rbspi->lock);
-	INIT_LIST_HEAD(&rbspi->queue);
-
-	err = spi_register_master(master);
-	if (err) {
-		dev_err(&pdev->dev, "failed to register SPI master\n");
-		goto err_iounmap;
-	}
-
-	return 0;
-
-err_iounmap:
-	iounmap(rbspi->base);
-err_clk_disable:
-	clk_disable_unprepare(rbspi->ahb_clk);
-err_clk_put:
-	clk_put(rbspi->ahb_clk);
-err_put_master:
-	platform_set_drvdata(pdev, NULL);
-	spi_master_put(master);
-err_out:
-	return err;
-}
-
-static int rb4xx_spi_remove(struct platform_device *pdev)
-{
-	struct rb4xx_spi *rbspi = platform_get_drvdata(pdev);
-
-	iounmap(rbspi->base);
-	clk_disable_unprepare(rbspi->ahb_clk);
-	clk_put(rbspi->ahb_clk);
-	platform_set_drvdata(pdev, NULL);
-	spi_master_put(rbspi->master);
-
-	return 0;
-}
-
-static struct platform_driver rb4xx_spi_drv = {
-	.probe		= rb4xx_spi_probe,
-	.remove		= rb4xx_spi_remove,
-	.driver		= {
-		.name	= DRV_NAME,
-		.owner	= THIS_MODULE,
-	},
-};
-
-static int __init rb4xx_spi_init(void)
-{
-	return platform_driver_register(&rb4xx_spi_drv);
-}
-subsys_initcall(rb4xx_spi_init);
-
-static void __exit rb4xx_spi_exit(void)
-{
-	platform_driver_unregister(&rb4xx_spi_drv);
-}
-
-module_exit(rb4xx_spi_exit);
-
-MODULE_DESCRIPTION(DRV_DESC);
-MODULE_VERSION(DRV_VERSION);
-MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
-MODULE_LICENSE("GPL v2");