1 files changed, 0 insertions, 445 deletions
diff --git a/target/linux/brcm63xx/files/drivers/spi/bcm63xx_spi.c b/target/linux/brcm63xx/files/drivers/spi/bcm63xx_spi.c
deleted file mode 100644
index a20de302d..000000000
--- a/target/linux/brcm63xx/files/drivers/spi/bcm63xx_spi.c
+++ /dev/null
@@ -1,445 +0,0 @@
-/*
- * Broadcom BCM63xx SPI controller support
- *
- * Copyright (C) 2009 Florian Fainelli <florian@openwrt.org>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/clk.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/delay.h>
-#include <linux/interrupt.h>
-#include <linux/spi/spi.h>
-#include <linux/spi/spi_bitbang.h>
-#include <linux/gpio.h>
-#include <linux/completion.h>
-#include <linux/err.h>
-
-#include <bcm63xx_io.h>
-#include <bcm63xx_regs.h>
-#include <bcm63xx_dev_spi.h>
-
-#define PFX 		KBUILD_MODNAME
-#define DRV_VER		"0.1.2"
-
-struct bcm63xx_spi {
-	/* bitbang has to be first */
-        struct spi_bitbang	bitbang;
-        struct completion	done;
-
-        void __iomem		*regs;
-        int			irq;
-
-	/* Platform data */
-        u32			speed_hz;
-	unsigned		fifo_size;
-
-	/* Data buffers */
-	const unsigned char	*tx_ptr;
-	unsigned char		*rx_ptr;
-	int			remaining_bytes;
-
-	struct clk		*clk;
-	struct resource		*ioarea;
-	struct platform_device	*pdev;
-};
-
-static void bcm63xx_spi_chipselect(struct spi_device *spi, int is_on)
-{
-	struct bcm63xx_spi *bs = spi_master_get_devdata(spi->master);
-	u16 val;
-
-	val = bcm_spi_readw(bs->regs, SPI_CMD);
-	if (is_on == BITBANG_CS_INACTIVE)
-		val |= SPI_CMD_NOOP;
-	else if (is_on == BITBANG_CS_ACTIVE)
-		val |= (1 << spi->chip_select << SPI_CMD_DEVICE_ID_SHIFT);
-		
-	bcm_spi_writew(val, bs->regs, SPI_CMD);
-}
-
-static int bcm63xx_spi_setup_transfer(struct spi_device *spi,
-					struct spi_transfer *t)
-{
-	u8 bits_per_word;
-	u8 clk_cfg;
-	u32 hz;
-	unsigned int div;
-
-	struct bcm63xx_spi *bs = spi_master_get_devdata(spi->master);
-
-	bits_per_word = (t) ? t->bits_per_word : spi->bits_per_word;
-	hz = (t) ? t->speed_hz : spi->max_speed_hz;
-	if (bits_per_word != 8) {
-		dev_err(&spi->dev, "%s, unsupported bits_per_word=%d\n",
-			__func__, bits_per_word);
-		return -EINVAL;
-        }
-
-	if (spi->chip_select > spi->master->num_chipselect) {
-		dev_err(&spi->dev, "%s, unsupported slave %d\n",
-			__func__, spi->chip_select);
-		return -EINVAL;
-	}
-
-	/* Check clock setting */
-	div = (bs->speed_hz / hz);
-	switch (div) {
-	case 2:
-		clk_cfg = SPI_CLK_25MHZ;
-		break;
-	case 4:
-		clk_cfg = SPI_CLK_12_50MHZ;
-		break;
-	case 8:
-		clk_cfg = SPI_CLK_6_250MHZ;
-		break;
-	case 16:
-		clk_cfg = SPI_CLK_3_125MHZ;
-		break;
-	case 32:
-		clk_cfg = SPI_CLK_1_563MHZ;
-		break;
-	case 128:
-		clk_cfg = SPI_CLK_0_781MHZ;
-		break;
-	case 64:
-	default:
-		/* Set to slowest mode for compatibility */
-		clk_cfg = SPI_CLK_0_781MHZ;
-		break;
-	}
-
-	bcm_spi_writeb(clk_cfg, bs->regs, SPI_CLK_CFG);
-	dev_dbg(&spi->dev, "Setting clock register to %d (hz %d, cmd %02x)\n",
-								div, hz, clk_cfg);
-	
-	return 0;
-}
-
-/* the spi->mode bits understood by this driver: */
-#define MODEBITS (SPI_CPOL | SPI_CPHA)
-
-static int bcm63xx_spi_setup(struct spi_device *spi)
-{
-	struct spi_bitbang *bitbang;
-	struct bcm63xx_spi *bs;
-	int retval;
-
-	bs = spi_master_get_devdata(spi->master);
-	bitbang = &bs->bitbang;
-
-	if (!spi->bits_per_word)
-		spi->bits_per_word = 8;
-
-	if (spi->mode & ~MODEBITS) {
-		dev_err(&spi->dev, "%s, unsupported mode bits %x\n",
-			__func__, spi->mode & ~MODEBITS);
-		return -EINVAL;
-	}
-
-	retval = bcm63xx_spi_setup_transfer(spi, NULL);
-	if (retval < 0) {
-		dev_err(&spi->dev, "setup: unsupported mode bits %x\n",
-			spi->mode & ~MODEBITS);
-		return retval;
-	}
-
-	dev_dbg(&spi->dev, "%s, mode %d, %u bits/w, %u nsec/bit\n",
-		__func__, spi->mode & MODEBITS, spi->bits_per_word, 0);
-
-	return 0;
-}
-
-/* Fill the TX FIFO with as many bytes as possible */
-static void bcm63xx_spi_fill_tx_fifo(struct bcm63xx_spi *bs)
-{
-        u8 tail;
-
-        /* Fill the Tx FIFO with as many bytes as possible */
-	tail = bcm_spi_readb(bs->regs, SPI_MSG_TAIL);
-        while ((tail < bs->fifo_size) && (bs->remaining_bytes > 0)) {
-                if (bs->tx_ptr)
-                        bcm_spi_writeb(*bs->tx_ptr++, bs->regs, SPI_MSG_DATA);
-		else
-			bcm_spi_writeb(0, bs->regs, SPI_MSG_DATA); 
-                bs->remaining_bytes--;
-		tail = bcm_spi_readb(bs->regs, SPI_MSG_TAIL);
-        }
-}
-
-static int bcm63xx_txrx_bufs(struct spi_device *spi, struct spi_transfer *t)
-{
-	struct bcm63xx_spi *bs = spi_master_get_devdata(spi->master);
-	u8 msg_ctl;
-	u16 cmd;
-
-	dev_dbg(&spi->dev, "txrx: tx %p, rx %p, len %d\n",
-				t->tx_buf, t->rx_buf, t->len);
-
-	/* Transmitter is inhibited */
-	bs->tx_ptr = t->tx_buf;
-	bs->rx_ptr = t->rx_buf;
-	bs->remaining_bytes = t->len;
-	init_completion(&bs->done);
-
-	bcm63xx_spi_fill_tx_fifo(bs);
-
-	/* Enable the command done interrupt which
-	 * we use to determine completion of a command */
-	bcm_spi_writeb(SPI_INTR_CMD_DONE, bs->regs, SPI_INT_MASK);
-	
-	/* Fill in the Message control register */
-	msg_ctl = bcm_spi_readb(bs->regs, SPI_MSG_CTL);
-	msg_ctl |= (t->len << SPI_BYTE_CNT_SHIFT);
-	msg_ctl |= (SPI_FD_RW << SPI_MSG_TYPE_SHIFT);
-	bcm_spi_writeb(msg_ctl, bs->regs, SPI_MSG_CTL);
-	
-	/* Issue the transfer */
-	cmd = bcm_spi_readb(bs->regs, SPI_CMD);
-	cmd |= SPI_CMD_START_IMMEDIATE;
-	cmd |= (0 << SPI_CMD_PREPEND_BYTE_CNT_SHIFT);
-	bcm_spi_writeb(cmd, bs->regs, SPI_CMD);
-
-	wait_for_completion(&bs->done);	
-
-	/* Disable the CMD_DONE interrupt */
-	bcm_spi_writeb(~(SPI_INTR_CMD_DONE), bs->regs, SPI_INT_MASK);
-
-	return t->len - bs->remaining_bytes;
-}
-
-/* This driver supports single master mode only. Hence 
- * CMD_DONE is the only interrupt we care about
- */
-static irqreturn_t bcm63xx_spi_interrupt(int irq, void *dev_id)
-{
-	struct spi_master *master = (struct spi_master *)dev_id;
-	struct bcm63xx_spi *bs = spi_master_get_devdata(master);
-	u8 intr;
-	u16 cmd;
-
-	/* Read interupts and clear them immediately */
-	intr = bcm_spi_readb(bs->regs, SPI_INT_STATUS);
-	bcm_spi_writeb(SPI_INTR_CLEAR_ALL, bs->regs, SPI_INT_MASK);
-
-	/* A tansfer completed */
-	if (intr & SPI_INTR_CMD_DONE) {
-		u8 rx_empty;
-	
-		rx_empty = bcm_spi_readb(bs->regs, SPI_ST);
-		/* Read out all the data */
-		while ((rx_empty & SPI_RX_EMPTY) == 0) {
-			u8 data;
-		
-			data = bcm_spi_readb(bs->regs, SPI_RX_DATA);
-			if (bs->rx_ptr)
-				*bs->rx_ptr++ = data;
-
-			rx_empty = bcm_spi_readb(bs->regs, SPI_RX_EMPTY);
-		}
-
-		/* See if there is more data to send */
-		if (bs->remaining_bytes > 0) {
-			bcm63xx_spi_fill_tx_fifo(bs);
-
-			/* Start the transfer */
-			cmd = bcm_spi_readb(bs->regs, SPI_CMD);
-			cmd |= SPI_CMD_START_IMMEDIATE;
-			cmd |= (0 << SPI_CMD_PREPEND_BYTE_CNT_SHIFT);
-			bcm_spi_writeb(cmd, bs->regs, SPI_CMD);
-		} else
-			complete(&bs->done);
-	}
-
-	return IRQ_HANDLED;
-}
-
-
-static int __init bcm63xx_spi_probe(struct platform_device *pdev)
-{
-	struct resource *r;
-	struct bcm63xx_spi_pdata *pdata = pdev->dev.platform_data;
-	int irq;
-	struct spi_master *master;
-	struct clk *clk;
-	struct bcm63xx_spi *bs;
-	int ret;
-
-	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!r) {
-		ret = -ENXIO;
-		goto out;
-	}
-
-	irq = platform_get_irq(pdev, 0);
-	if (irq < 0) {
-		ret = -ENXIO;
-		goto out;
-	}
-
-	clk = clk_get(&pdev->dev, "spi");
-	if (IS_ERR(clk)) {
-		dev_err(&pdev->dev, "No clock for device\n");
-		ret = -ENODEV;
-		goto out;
-	}
-	
-	master = spi_alloc_master(&pdev->dev, sizeof(struct bcm63xx_spi));
-	if (!master) {
-		ret = -ENOMEM;
-		goto out_free;
-	}
-
-	bs = spi_master_get_devdata(master);
-	bs->bitbang.master = spi_master_get(master);
-	bs->bitbang.chipselect = bcm63xx_spi_chipselect;
-	bs->bitbang.setup_transfer = bcm63xx_spi_setup_transfer;
-	bs->bitbang.txrx_bufs = bcm63xx_txrx_bufs;
-	bs->bitbang.master->setup = bcm63xx_spi_setup;
-	init_completion(&bs->done);
-	
-	platform_set_drvdata(pdev, master);
-        bs->pdev = pdev;
-
-	if (!request_mem_region(r->start,
-			r->end - r->start, PFX)) {
-		ret = -ENXIO;
-		goto out_free;
-	}
-
-        bs->regs = ioremap_nocache(r->start, r->end - r->start);
-	if (!bs->regs) {
-		printk(KERN_ERR PFX " unable to ioremap regs\n");
-		ret = -ENOMEM;
-		goto out_free;
-	}
-	bs->irq = irq;
-	bs->clk = clk;
-	bs->fifo_size = pdata->fifo_size;
-
-	ret = request_irq(irq, bcm63xx_spi_interrupt, 0,
-				pdev->name, master);
-	if (ret) {
-		printk(KERN_ERR PFX " unable to request irq\n");
-		goto out_unmap;
-	}
-
-	master->bus_num = pdata->bus_num;
-	master->num_chipselect = pdata->num_chipselect;
-	bs->speed_hz = pdata->speed_hz;
-	
-	/* Initialize hardware */
-	clk_enable(bs->clk);
-	bcm_spi_writeb(SPI_INTR_CLEAR_ALL, bs->regs, SPI_INT_MASK);
-	
-	dev_info(&pdev->dev, " at 0x%08x (irq %d, FIFOs size %d) v%s\n",
-				r->start, irq, bs->fifo_size, DRV_VER);
-
-	ret = spi_bitbang_start(&bs->bitbang);
-	if (ret) {
-		dev_err(&pdev->dev, "spi_bitbang_start FAILED\n");
-		goto out_reset_hw;
-	}
-
-	return ret;
-
-out_reset_hw:
-	clk_disable(clk);
-	free_irq(irq, master);
-out_unmap:
-	iounmap(bs->regs);
-out_free:
-	clk_put(clk);
-	spi_master_put(master);
-out:
-	return ret;
-}
-
-static int __exit bcm63xx_spi_remove(struct platform_device *pdev)
-{
-	struct spi_master	*master = platform_get_drvdata(pdev);
-	struct bcm63xx_spi	*bs = spi_master_get_devdata(master);
-
-	spi_bitbang_stop(&bs->bitbang);
-	clk_disable(bs->clk);
-	clk_put(bs->clk);
-	free_irq(bs->irq, master);
-	iounmap(bs->regs);
-	platform_set_drvdata(pdev, 0);
-	spi_master_put(bs->bitbang.master);
-
-	return 0;
-}
-
-#ifdef CONFIG_PM
-static int bcm63xx_spi_suspend(struct platform_device *pdev, pm_message_t mesg)
-{
-	struct spi_master	*master = platform_get_drvdata(pdev);
-	struct bcm63xx_spi	*bs = spi_master_get_devdata(master);
-
-        clk_disable(bs->clk);
-        
-	return 0;
-}
-
-static int bcm63xx_spi_resume(struct platform_device *pdev)
-{
-	struct bcm63xx_spi	*bs = spi_master_get_devdata(master);
-	struct bcm63xx_spi	*bs = spi_master_get_devdata(master);
-
-	clk_enable(bs->clk);
-
-	return 0;
-}
-#else
-#define bcm63xx_spi_suspend	NULL
-#define bcm63xx_spi_resume	NULL
-#endif
-
-static struct platform_driver bcm63xx_spi_driver = {
-	.driver = {
-		.name	= "bcm63xx-spi",
-		.owner	= THIS_MODULE,
-	},
-	.probe		= bcm63xx_spi_probe,
-	.remove		= bcm63xx_spi_remove,
-	.suspend	= bcm63xx_spi_suspend,
-	.resume		= bcm63xx_spi_resume,
-};
-
-
-static int __init bcm63xx_spi_init(void)
-{
-	return platform_driver_register(&bcm63xx_spi_driver);
-}
-
-static void __exit bcm63xx_spi_exit(void)
-{
-	platform_driver_unregister(&bcm63xx_spi_driver);
-}
-
-module_init(bcm63xx_spi_init);
-module_exit(bcm63xx_spi_exit);
-
-MODULE_ALIAS("platform:bcm63xx_spi");
-MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
-MODULE_DESCRIPTION("Broadcom BCM63xx SPI Controller driver");
-MODULE_LICENSE("GPL");
-MODULE_VERSION(DRV_VER);