1 files changed, 0 insertions, 162 deletions

diff --git a/target/linux/brcm63xx/patches-3.8/001-spi-bcm63xx-reject-transfers-unable-to-transfer.patch b/target/linux/brcm63xx/patches-3.8/001-spi-bcm63xx-reject-transfers-unable-to-transfer.patch
deleted file mode 100644
index 8726b19..0000000
--- a/target/linux/brcm63xx/patches-3.8/001-spi-bcm63xx-reject-transfers-unable-to-transfer.patch
+++ /dev/null
@@ -1,162 +0,0 @@
-From 243970ea035623f70431a80ece802f572cd446be Mon Sep 17 00:00:00 2001
-From: Jonas Gorski <jogo@openwrt.org>
-Date: Sun, 9 Dec 2012 00:10:00 +0100
-Subject: [PATCH V2 1/2] spi/bcm63xx: reject transfers unable to transfer
-
-The hardware does not support keeping CS asserted after sending one
-FIFO buffer worth of data, so reject transfers requiring CS being kept
-asserted, either between transers or for a certain time after it,
-or exceeding the FIFO size.
-
-Signed-off-by: Jonas Gorski <jogo@openwrt.org>
----
- drivers/spi/spi-bcm63xx.c |   91 +++++++++++++++++++++------------------------
- 1 file changed, 42 insertions(+), 49 deletions(-)
-
---- a/drivers/spi/spi-bcm63xx.c
-+++ b/drivers/spi/spi-bcm63xx.c
-@@ -49,16 +49,10 @@ struct bcm63xx_spi {
- 	unsigned int		msg_type_shift;
- 	unsigned int		msg_ctl_width;
- 
--	/* Data buffers */
--	const unsigned char	*tx_ptr;
--	unsigned char		*rx_ptr;
--
- 	/* data iomem */
- 	u8 __iomem		*tx_io;
- 	const u8 __iomem	*rx_io;
- 
--	int			remaining_bytes;
--
- 	struct clk		*clk;
- 	struct platform_device	*pdev;
- };
-@@ -175,24 +169,13 @@ static int bcm63xx_spi_setup(struct spi_
- 	return 0;
- }
- 
--/* Fill the TX FIFO with as many bytes as possible */
--static void bcm63xx_spi_fill_tx_fifo(struct bcm63xx_spi *bs)
--{
--	u8 size;
--
--	/* Fill the Tx FIFO with as many bytes as possible */
--	size = bs->remaining_bytes < bs->fifo_size ? bs->remaining_bytes :
--		bs->fifo_size;
--	memcpy_toio(bs->tx_io, bs->tx_ptr, size);
--	bs->remaining_bytes -= size;
--}
--
--static unsigned int bcm63xx_txrx_bufs(struct spi_device *spi,
--					struct spi_transfer *t)
-+static int bcm63xx_txrx_bufs(struct spi_device *spi, struct spi_transfer *t)
- {
- 	struct bcm63xx_spi *bs = spi_master_get_devdata(spi->master);
- 	u16 msg_ctl;
- 	u16 cmd;
-+	u8 rx_tail;
-+	unsigned int timeout = 0;
- 
- 	/* Disable the CMD_DONE interrupt */
- 	bcm_spi_writeb(bs, 0, SPI_INT_MASK);
-@@ -200,14 +183,8 @@ static unsigned int bcm63xx_txrx_bufs(st
- 	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;
--
--	if (t->tx_buf) {
--		bs->remaining_bytes = t->len;
--		bcm63xx_spi_fill_tx_fifo(bs);
--	}
-+	if (t->tx_buf)
-+		memcpy_toio(bs->tx_io, t->tx_buf, t->len);
- 
- 	init_completion(&bs->done);
- 
-@@ -239,7 +216,18 @@ static unsigned int bcm63xx_txrx_bufs(st
- 	/* Enable the CMD_DONE interrupt */
- 	bcm_spi_writeb(bs, SPI_INTR_CMD_DONE, SPI_INT_MASK);
- 
--	return t->len - bs->remaining_bytes;
-+	timeout = wait_for_completion_timeout(&bs->done, HZ);
-+	if (!timeout)
-+		return -ETIMEDOUT;
-+
-+	/* read out all data */
-+	rx_tail = bcm_spi_readb(bs, SPI_RX_TAIL);
-+
-+	/* Read out all the data */
-+	if (rx_tail)
-+		memcpy_fromio(t->rx_ptr, bs->rx_io, rx_tail);
-+
-+	return 0;
- }
- 
- static int bcm63xx_spi_prepare_transfer(struct spi_master *master)
-@@ -267,36 +255,41 @@ static int bcm63xx_spi_transfer_one(stru
- 	struct spi_transfer *t;
- 	struct spi_device *spi = m->spi;
- 	int status = 0;
--	unsigned int timeout = 0;
- 
- 	list_for_each_entry(t, &m->transfers, transfer_list) {
--		unsigned int len = t->len;
--		u8 rx_tail;
--
- 		status = bcm63xx_spi_check_transfer(spi, t);
- 		if (status < 0)
- 			goto exit;
- 
-+		/* we can only transfer one fifo worth of data */
-+		if (t->len > bs->fifo_size) {
-+			dev_err(&spi->dev, "unable to do transfers larger than FIFO size (%i > %i)\n",
-+				t->len, bs->fifo_size);
-+			status = -EINVAL;
-+			goto exit;
-+		}
-+
-+		/* CS will be deasserted directly after transfer */
-+		if (t->delay_usecs) {
-+			dev_err(&spi->dev, "unable to keep CS asserted after transfer\n");
-+			status = -EINVAL;
-+			goto exit;
-+		}
-+
-+		if (!t->cs_change &&
-+		    !list_is_last(&t->transfer_list, &m->transfers)) {
-+			dev_err(&spi->dev, "unable to keep CS asserted between transfers\n");
-+			status = -EINVAL;
-+			goto exit;
-+		}
-+
- 		/* configure adapter for a new transfer */
- 		bcm63xx_spi_setup_transfer(spi, t);
- 
--		while (len) {
--			/* send the data */
--			len -= bcm63xx_txrx_bufs(spi, t);
--
--			timeout = wait_for_completion_timeout(&bs->done, HZ);
--			if (!timeout) {
--				status = -ETIMEDOUT;
--				goto exit;
--			}
--
--			/* read out all data */
--			rx_tail = bcm_spi_readb(bs, SPI_RX_TAIL);
--
--			/* Read out all the data */
--			if (rx_tail)
--				memcpy_fromio(bs->rx_ptr, bs->rx_io, rx_tail);
--		}
-+		/* send the data */
-+		status = bcm63xx_txrx_bufs(spi, t);
-+		if (status)
-+			goto exit;
- 
- 		m->actual_length += t->len;
- 	}