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-rw-r--r--drivers/spi/Kconfig18
-rw-r--r--drivers/spi/Makefile5
-rw-r--r--drivers/spi/amba-pl022.c56
-rw-r--r--drivers/spi/atmel_spi.c6
-rw-r--r--drivers/spi/dw_spi.c55
-rw-r--r--drivers/spi/dw_spi_mid.c223
-rw-r--r--drivers/spi/dw_spi_pci.c20
-rw-r--r--drivers/spi/mpc52xx_psc_spi.c35
-rw-r--r--drivers/spi/spi_imx.c30
-rw-r--r--drivers/spi/spi_nuc900.c2
-rw-r--r--drivers/spi/spi_topcliff_pch.c8
-rw-r--r--drivers/spi/xilinx_spi.c133
-rw-r--r--drivers/spi/xilinx_spi.h32
-rw-r--r--drivers/spi/xilinx_spi_of.c133
-rw-r--r--drivers/spi/xilinx_spi_pltfm.c102
15 files changed, 446 insertions, 412 deletions
diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
index a32796e0bdc..6efac5fd439 100644
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -356,7 +356,6 @@ config SPI_XILINX
tristate "Xilinx SPI controller common module"
depends on HAS_IOMEM && EXPERIMENTAL
select SPI_BITBANG
- select SPI_XILINX_OF if (XILINX_VIRTEX || MICROBLAZE)
help
This exposes the SPI controller IP from the Xilinx EDK.
@@ -365,19 +364,6 @@ config SPI_XILINX
Or for the DS570, see "XPS Serial Peripheral Interface (SPI) (v2.00b)"
-config SPI_XILINX_OF
- tristate "Xilinx SPI controller OF device"
- depends on SPI_XILINX && (XILINX_VIRTEX || MICROBLAZE)
- help
- This is the OF driver for the SPI controller IP from the Xilinx EDK.
-
-config SPI_XILINX_PLTFM
- tristate "Xilinx SPI controller platform device"
- depends on SPI_XILINX
- help
- This is the platform driver for the SPI controller IP
- from the Xilinx EDK.
-
config SPI_NUC900
tristate "Nuvoton NUC900 series SPI"
depends on ARCH_W90X900 && EXPERIMENTAL
@@ -399,6 +385,10 @@ config SPI_DW_PCI
tristate "PCI interface driver for DW SPI core"
depends on SPI_DESIGNWARE && PCI
+config SPI_DW_MID_DMA
+ bool "DMA support for DW SPI controller on Intel Moorestown platform"
+ depends on SPI_DW_PCI && INTEL_MID_DMAC
+
config SPI_DW_MMIO
tristate "Memory-mapped io interface driver for DW SPI core"
depends on SPI_DESIGNWARE && HAVE_CLK
diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile
index 8bc1a5abac1..7ec375b6c0c 100644
--- a/drivers/spi/Makefile
+++ b/drivers/spi/Makefile
@@ -17,7 +17,8 @@ obj-$(CONFIG_SPI_BUTTERFLY) += spi_butterfly.o
obj-$(CONFIG_SPI_COLDFIRE_QSPI) += coldfire_qspi.o
obj-$(CONFIG_SPI_DAVINCI) += davinci_spi.o
obj-$(CONFIG_SPI_DESIGNWARE) += dw_spi.o
-obj-$(CONFIG_SPI_DW_PCI) += dw_spi_pci.o
+obj-$(CONFIG_SPI_DW_PCI) += dw_spi_midpci.o
+dw_spi_midpci-objs := dw_spi_pci.o dw_spi_mid.o
obj-$(CONFIG_SPI_DW_MMIO) += dw_spi_mmio.o
obj-$(CONFIG_SPI_EP93XX) += ep93xx_spi.o
obj-$(CONFIG_SPI_GPIO) += spi_gpio.o
@@ -43,8 +44,6 @@ obj-$(CONFIG_SPI_TEGRA) += spi_tegra.o
obj-$(CONFIG_SPI_TOPCLIFF_PCH) += spi_topcliff_pch.o
obj-$(CONFIG_SPI_TXX9) += spi_txx9.o
obj-$(CONFIG_SPI_XILINX) += xilinx_spi.o
-obj-$(CONFIG_SPI_XILINX_OF) += xilinx_spi_of.o
-obj-$(CONFIG_SPI_XILINX_PLTFM) += xilinx_spi_pltfm.o
obj-$(CONFIG_SPI_SH_SCI) += spi_sh_sci.o
obj-$(CONFIG_SPI_SH_MSIOF) += spi_sh_msiof.o
obj-$(CONFIG_SPI_STMP3XXX) += spi_stmp.o
diff --git a/drivers/spi/amba-pl022.c b/drivers/spi/amba-pl022.c
index fb3d1b31772..a2a5921c730 100644
--- a/drivers/spi/amba-pl022.c
+++ b/drivers/spi/amba-pl022.c
@@ -253,11 +253,6 @@
#define STATE_ERROR ((void *) -1)
/*
- * Queue State
- */
-#define QUEUE_RUNNING (0)
-#define QUEUE_STOPPED (1)
-/*
* SSP State - Whether Enabled or Disabled
*/
#define SSP_DISABLED (0)
@@ -344,7 +339,7 @@ struct vendor_data {
* @lock: spinlock to syncronise access to driver data
* @workqueue: a workqueue on which any spi_message request is queued
* @busy: workqueue is busy
- * @run: workqueue is running
+ * @running: workqueue is running
* @pump_transfers: Tasklet used in Interrupt Transfer mode
* @cur_msg: Pointer to current spi_message being processed
* @cur_transfer: Pointer to current spi_transfer
@@ -369,8 +364,8 @@ struct pl022 {
struct work_struct pump_messages;
spinlock_t queue_lock;
struct list_head queue;
- int busy;
- int run;
+ bool busy;
+ bool running;
/* Message transfer pump */
struct tasklet_struct pump_transfers;
struct spi_message *cur_msg;
@@ -782,9 +777,9 @@ static void *next_transfer(struct pl022 *pl022)
static void unmap_free_dma_scatter(struct pl022 *pl022)
{
/* Unmap and free the SG tables */
- dma_unmap_sg(&pl022->adev->dev, pl022->sgt_tx.sgl,
+ dma_unmap_sg(pl022->dma_tx_channel->device->dev, pl022->sgt_tx.sgl,
pl022->sgt_tx.nents, DMA_TO_DEVICE);
- dma_unmap_sg(&pl022->adev->dev, pl022->sgt_rx.sgl,
+ dma_unmap_sg(pl022->dma_rx_channel->device->dev, pl022->sgt_rx.sgl,
pl022->sgt_rx.nents, DMA_FROM_DEVICE);
sg_free_table(&pl022->sgt_rx);
sg_free_table(&pl022->sgt_tx);
@@ -917,7 +912,7 @@ static int configure_dma(struct pl022 *pl022)
};
unsigned int pages;
int ret;
- int sglen;
+ int rx_sglen, tx_sglen;
struct dma_chan *rxchan = pl022->dma_rx_channel;
struct dma_chan *txchan = pl022->dma_tx_channel;
struct dma_async_tx_descriptor *rxdesc;
@@ -956,7 +951,7 @@ static int configure_dma(struct pl022 *pl022)
tx_conf.dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
break;
case WRITING_U32:
- tx_conf.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;;
+ tx_conf.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
break;
}
@@ -991,20 +986,20 @@ static int configure_dma(struct pl022 *pl022)
pl022->cur_transfer->len, &pl022->sgt_tx);
/* Map DMA buffers */
- sglen = dma_map_sg(&pl022->adev->dev, pl022->sgt_rx.sgl,
+ rx_sglen = dma_map_sg(rxchan->device->dev, pl022->sgt_rx.sgl,
pl022->sgt_rx.nents, DMA_FROM_DEVICE);
- if (!sglen)
+ if (!rx_sglen)
goto err_rx_sgmap;
- sglen = dma_map_sg(&pl022->adev->dev, pl022->sgt_tx.sgl,
+ tx_sglen = dma_map_sg(txchan->device->dev, pl022->sgt_tx.sgl,
pl022->sgt_tx.nents, DMA_TO_DEVICE);
- if (!sglen)
+ if (!tx_sglen)
goto err_tx_sgmap;
/* Send both scatterlists */
rxdesc = rxchan->device->device_prep_slave_sg(rxchan,
pl022->sgt_rx.sgl,
- pl022->sgt_rx.nents,
+ rx_sglen,
DMA_FROM_DEVICE,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
if (!rxdesc)
@@ -1012,7 +1007,7 @@ static int configure_dma(struct pl022 *pl022)
txdesc = txchan->device->device_prep_slave_sg(txchan,
pl022->sgt_tx.sgl,
- pl022->sgt_tx.nents,
+ tx_sglen,
DMA_TO_DEVICE,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
if (!txdesc)
@@ -1040,10 +1035,10 @@ err_txdesc:
txchan->device->device_control(txchan, DMA_TERMINATE_ALL, 0);
err_rxdesc:
rxchan->device->device_control(rxchan, DMA_TERMINATE_ALL, 0);
- dma_unmap_sg(&pl022->adev->dev, pl022->sgt_tx.sgl,
+ dma_unmap_sg(txchan->device->dev, pl022->sgt_tx.sgl,
pl022->sgt_tx.nents, DMA_TO_DEVICE);
err_tx_sgmap:
- dma_unmap_sg(&pl022->adev->dev, pl022->sgt_rx.sgl,
+ dma_unmap_sg(rxchan->device->dev, pl022->sgt_rx.sgl,
pl022->sgt_tx.nents, DMA_FROM_DEVICE);
err_rx_sgmap:
sg_free_table(&pl022->sgt_tx);
@@ -1460,8 +1455,8 @@ static void pump_messages(struct work_struct *work)
/* Lock queue and check for queue work */
spin_lock_irqsave(&pl022->queue_lock, flags);
- if (list_empty(&pl022->queue) || pl022->run == QUEUE_STOPPED) {
- pl022->busy = 0;
+ if (list_empty(&pl022->queue) || !pl022->running) {
+ pl022->busy = false;
spin_unlock_irqrestore(&pl022->queue_lock, flags);
return;
}
@@ -1475,7 +1470,7 @@ static void pump_messages(struct work_struct *work)
list_entry(pl022->queue.next, struct spi_message, queue);
list_del_init(&pl022->cur_msg->queue);
- pl022->busy = 1;
+ pl022->busy = true;
spin_unlock_irqrestore(&pl022->queue_lock, flags);
/* Initial message state */
@@ -1507,8 +1502,8 @@ static int __init init_queue(struct pl022 *pl022)
INIT_LIST_HEAD(&pl022->queue);
spin_lock_init(&pl022->queue_lock);
- pl022->run = QUEUE_STOPPED;
- pl022->busy = 0;
+ pl022->running = false;
+ pl022->busy = false;
tasklet_init(&pl022->pump_transfers,
pump_transfers, (unsigned long)pl022);
@@ -1529,12 +1524,12 @@ static int start_queue(struct pl022 *pl022)
spin_lock_irqsave(&pl022->queue_lock, flags);
- if (pl022->run == QUEUE_RUNNING || pl022->busy) {
+ if (pl022->running || pl022->busy) {
spin_unlock_irqrestore(&pl022->queue_lock, flags);
return -EBUSY;
}
- pl022->run = QUEUE_RUNNING;
+ pl022->running = true;
pl022->cur_msg = NULL;
pl022->cur_transfer = NULL;
pl022->cur_chip = NULL;
@@ -1566,7 +1561,8 @@ static int stop_queue(struct pl022 *pl022)
if (!list_empty(&pl022->queue) || pl022->busy)
status = -EBUSY;
- else pl022->run = QUEUE_STOPPED;
+ else
+ pl022->running = false;
spin_unlock_irqrestore(&pl022->queue_lock, flags);
@@ -1684,7 +1680,7 @@ static int pl022_transfer(struct spi_device *spi, struct spi_message *msg)
spin_lock_irqsave(&pl022->queue_lock, flags);
- if (pl022->run == QUEUE_STOPPED) {
+ if (!pl022->running) {
spin_unlock_irqrestore(&pl022->queue_lock, flags);
return -ESHUTDOWN;
}
@@ -1693,7 +1689,7 @@ static int pl022_transfer(struct spi_device *spi, struct spi_message *msg)
msg->state = STATE_START;
list_add_tail(&msg->queue, &pl022->queue);
- if (pl022->run == QUEUE_RUNNING && !pl022->busy)
+ if (pl022->running && !pl022->busy)
queue_work(pl022->workqueue, &pl022->pump_messages);
spin_unlock_irqrestore(&pl022->queue_lock, flags);
diff --git a/drivers/spi/atmel_spi.c b/drivers/spi/atmel_spi.c
index 154529aacc0..a067046c9da 100644
--- a/drivers/spi/atmel_spi.c
+++ b/drivers/spi/atmel_spi.c
@@ -352,8 +352,12 @@ atmel_spi_dma_map_xfer(struct atmel_spi *as, struct spi_transfer *xfer)
xfer->tx_dma = xfer->rx_dma = INVALID_DMA_ADDRESS;
if (xfer->tx_buf) {
+ /* tx_buf is a const void* where we need a void * for the dma
+ * mapping */
+ void *nonconst_tx = (void *)xfer->tx_buf;
+
xfer->tx_dma = dma_map_single(dev,
- (void *) xfer->tx_buf, xfer->len,
+ nonconst_tx, xfer->len,
DMA_TO_DEVICE);
if (dma_mapping_error(dev, xfer->tx_dma))
return -ENOMEM;
diff --git a/drivers/spi/dw_spi.c b/drivers/spi/dw_spi.c
index 90439314cf6..497ecb3ab83 100644
--- a/drivers/spi/dw_spi.c
+++ b/drivers/spi/dw_spi.c
@@ -164,20 +164,23 @@ static inline void mrst_spi_debugfs_remove(struct dw_spi *dws)
static void wait_till_not_busy(struct dw_spi *dws)
{
- unsigned long end = jiffies + 1 + usecs_to_jiffies(1000);
+ unsigned long end = jiffies + 1 + usecs_to_jiffies(5000);
while (time_before(jiffies, end)) {
if (!(dw_readw(dws, sr) & SR_BUSY))
return;
+ cpu_relax();
}
dev_err(&dws->master->dev,
- "DW SPI: Status keeps busy for 1000us after a read/write!\n");
+ "DW SPI: Status keeps busy for 5000us after a read/write!\n");
}
static void flush(struct dw_spi *dws)
{
- while (dw_readw(dws, sr) & SR_RF_NOT_EMPT)
+ while (dw_readw(dws, sr) & SR_RF_NOT_EMPT) {
dw_readw(dws, dr);
+ cpu_relax();
+ }
wait_till_not_busy(dws);
}
@@ -285,8 +288,10 @@ static void *next_transfer(struct dw_spi *dws)
*/
static int map_dma_buffers(struct dw_spi *dws)
{
- if (!dws->cur_msg->is_dma_mapped || !dws->dma_inited
- || !dws->cur_chip->enable_dma)
+ if (!dws->cur_msg->is_dma_mapped
+ || !dws->dma_inited
+ || !dws->cur_chip->enable_dma
+ || !dws->dma_ops)
return 0;
if (dws->cur_transfer->tx_dma)
@@ -338,7 +343,7 @@ static void int_error_stop(struct dw_spi *dws, const char *msg)
tasklet_schedule(&dws->pump_transfers);
}
-static void transfer_complete(struct dw_spi *dws)
+void dw_spi_xfer_done(struct dw_spi *dws)
{
/* Update total byte transfered return count actual bytes read */
dws->cur_msg->actual_length += dws->len;
@@ -353,6 +358,7 @@ static void transfer_complete(struct dw_spi *dws)
} else
tasklet_schedule(&dws->pump_transfers);
}
+EXPORT_SYMBOL_GPL(dw_spi_xfer_done);
static irqreturn_t interrupt_transfer(struct dw_spi *dws)
{
@@ -384,7 +390,7 @@ static irqreturn_t interrupt_transfer(struct dw_spi *dws)
if (dws->tx_end > dws->tx)
spi_umask_intr(dws, SPI_INT_TXEI);
else
- transfer_complete(dws);
+ dw_spi_xfer_done(dws);
}
return IRQ_HANDLED;
@@ -413,12 +419,13 @@ static void poll_transfer(struct dw_spi *dws)
{
while (dws->write(dws))
dws->read(dws);
+ /*
+ * There is a possibility that the last word of a transaction
+ * will be lost if data is not ready. Re-read to solve this issue.
+ */
+ dws->read(dws);
- transfer_complete(dws);
-}
-
-static void dma_transfer(struct dw_spi *dws, int cs_change)
-{
+ dw_spi_xfer_done(dws);
}
static void pump_transfers(unsigned long data)
@@ -600,7 +607,7 @@ static void pump_transfers(unsigned long data)
}
if (dws->dma_mapped)
- dma_transfer(dws, cs_change);
+ dws->dma_ops->dma_transfer(dws, cs_change);
if (chip->poll_mode)
poll_transfer(dws);
@@ -896,11 +903,17 @@ int __devinit dw_spi_add_host(struct dw_spi *dws)
master->setup = dw_spi_setup;
master->transfer = dw_spi_transfer;
- dws->dma_inited = 0;
-
/* Basic HW init */
spi_hw_init(dws);
+ if (dws->dma_ops && dws->dma_ops->dma_init) {
+ ret = dws->dma_ops->dma_init(dws);
+ if (ret) {
+ dev_warn(&master->dev, "DMA init failed\n");
+ dws->dma_inited = 0;
+ }
+ }
+
/* Initial and start queue */
ret = init_queue(dws);
if (ret) {
@@ -925,6 +938,8 @@ int __devinit dw_spi_add_host(struct dw_spi *dws)
err_queue_alloc:
destroy_queue(dws);
+ if (dws->dma_ops && dws->dma_ops->dma_exit)
+ dws->dma_ops->dma_exit(dws);
err_diable_hw:
spi_enable_chip(dws, 0);
free_irq(dws->irq, dws);
@@ -933,7 +948,7 @@ err_free_master:
exit:
return ret;
}
-EXPORT_SYMBOL(dw_spi_add_host);
+EXPORT_SYMBOL_GPL(dw_spi_add_host);
void __devexit dw_spi_remove_host(struct dw_spi *dws)
{
@@ -949,6 +964,8 @@ void __devexit dw_spi_remove_host(struct dw_spi *dws)
dev_err(&dws->master->dev, "dw_spi_remove: workqueue will not "
"complete, message memory not freed\n");
+ if (dws->dma_ops && dws->dma_ops->dma_exit)
+ dws->dma_ops->dma_exit(dws);
spi_enable_chip(dws, 0);
/* Disable clk */
spi_set_clk(dws, 0);
@@ -957,7 +974,7 @@ void __devexit dw_spi_remove_host(struct dw_spi *dws)
/* Disconnect from the SPI framework */
spi_unregister_master(dws->master);
}
-EXPORT_SYMBOL(dw_spi_remove_host);
+EXPORT_SYMBOL_GPL(dw_spi_remove_host);
int dw_spi_suspend_host(struct dw_spi *dws)
{
@@ -970,7 +987,7 @@ int dw_spi_suspend_host(struct dw_spi *dws)
spi_set_clk(dws, 0);
return ret;
}
-EXPORT_SYMBOL(dw_spi_suspend_host);
+EXPORT_SYMBOL_GPL(dw_spi_suspend_host);
int dw_spi_resume_host(struct dw_spi *dws)
{
@@ -982,7 +999,7 @@ int dw_spi_resume_host(struct dw_spi *dws)
dev_err(&dws->master->dev, "fail to start queue (%d)\n", ret);
return ret;
}
-EXPORT_SYMBOL(dw_spi_resume_host);
+EXPORT_SYMBOL_GPL(dw_spi_resume_host);
MODULE_AUTHOR("Feng Tang <feng.tang@intel.com>");
MODULE_DESCRIPTION("Driver for DesignWare SPI controller core");
diff --git a/drivers/spi/dw_spi_mid.c b/drivers/spi/dw_spi_mid.c
new file mode 100644
index 00000000000..c91c966e071
--- /dev/null
+++ b/drivers/spi/dw_spi_mid.c
@@ -0,0 +1,223 @@
+/*
+ * dw_spi_mid.c - special handling for DW core on Intel MID platform
+ *
+ * Copyright (c) 2009, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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 St - Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <linux/dma-mapping.h>
+#include <linux/dmaengine.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/dw_spi.h>
+
+#ifdef CONFIG_SPI_DW_MID_DMA
+#include <linux/intel_mid_dma.h>
+#include <linux/pci.h>
+
+struct mid_dma {
+ struct intel_mid_dma_slave dmas_tx;
+ struct intel_mid_dma_slave dmas_rx;
+};
+
+static bool mid_spi_dma_chan_filter(struct dma_chan *chan, void *param)
+{
+ struct dw_spi *dws = param;
+
+ return dws->dmac && (&dws->dmac->dev == chan->device->dev);
+}
+
+static int mid_spi_dma_init(struct dw_spi *dws)
+{
+ struct mid_dma *dw_dma = dws->dma_priv;
+ struct intel_mid_dma_slave *rxs, *txs;
+ dma_cap_mask_t mask;
+
+ /*
+ * Get pci device for DMA controller, currently it could only
+ * be the DMA controller of either Moorestown or Medfield
+ */
+ dws->dmac = pci_get_device(PCI_VENDOR_ID_INTEL, 0x0813, NULL);
+ if (!dws->dmac)
+ dws->dmac = pci_get_device(PCI_VENDOR_ID_INTEL, 0x0827, NULL);
+
+ dma_cap_zero(mask);
+ dma_cap_set(DMA_SLAVE, mask);
+
+ /* 1. Init rx channel */
+ dws->rxchan = dma_request_channel(mask, mid_spi_dma_chan_filter, dws);
+ if (!dws->rxchan)
+ goto err_exit;
+ rxs = &dw_dma->dmas_rx;
+ rxs->hs_mode = LNW_DMA_HW_HS;
+ rxs->cfg_mode = LNW_DMA_PER_TO_MEM;
+ dws->rxchan->private = rxs;
+
+ /* 2. Init tx channel */
+ dws->txchan = dma_request_channel(mask, mid_spi_dma_chan_filter, dws);
+ if (!dws->txchan)
+ goto free_rxchan;
+ txs = &dw_dma->dmas_tx;
+ txs->hs_mode = LNW_DMA_HW_HS;
+ txs->cfg_mode = LNW_DMA_MEM_TO_PER;
+ dws->txchan->private = txs;
+
+ dws->dma_inited = 1;
+ return 0;
+
+free_rxchan:
+ dma_release_channel(dws->rxchan);
+err_exit:
+ return -1;
+
+}
+
+static void mid_spi_dma_exit(struct dw_spi *dws)
+{
+ dma_release_channel(dws->txchan);
+ dma_release_channel(dws->rxchan);
+}
+
+/*
+ * dws->dma_chan_done is cleared before the dma transfer starts,
+ * callback for rx/tx channel will each increment it by 1.
+ * Reaching 2 means the whole spi transaction is done.
+ */
+static void dw_spi_dma_done(void *arg)
+{
+ struct dw_spi *dws = arg;
+
+ if (++dws->dma_chan_done != 2)
+ return;
+ dw_spi_xfer_done(dws);
+}
+
+static int mid_spi_dma_transfer(struct dw_spi *dws, int cs_change)
+{
+ struct dma_async_tx_descriptor *txdesc = NULL, *rxdesc = NULL;
+ struct dma_chan *txchan, *rxchan;
+ struct dma_slave_config txconf, rxconf;
+ u16 dma_ctrl = 0;
+
+ /* 1. setup DMA related registers */
+ if (cs_change) {
+ spi_enable_chip(dws, 0);
+ dw_writew(dws, dmardlr, 0xf);
+ dw_writew(dws, dmatdlr, 0x10);
+ if (dws->tx_dma)
+ dma_ctrl |= 0x2;
+ if (dws->rx_dma)
+ dma_ctrl |= 0x1;
+ dw_writew(dws, dmacr, dma_ctrl);
+ spi_enable_chip(dws, 1);
+ }
+
+ dws->dma_chan_done = 0;
+ txchan = dws->txchan;
+ rxchan = dws->rxchan;
+
+ /* 2. Prepare the TX dma transfer */
+ txconf.direction = DMA_TO_DEVICE;
+ txconf.dst_addr = dws->dma_addr;
+ txconf.dst_maxburst = LNW_DMA_MSIZE_16;
+ txconf.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+ txconf.dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
+
+ txchan->device->device_control(txchan, DMA_SLAVE_CONFIG,
+ (unsigned long) &txconf);
+
+ memset(&dws->tx_sgl, 0, sizeof(dws->tx_sgl));
+ dws->tx_sgl.dma_address = dws->tx_dma;
+ dws->tx_sgl.length = dws->len;
+
+ txdesc = txchan->device->device_prep_slave_sg(txchan,
+ &dws->tx_sgl,
+ 1,
+ DMA_TO_DEVICE,
+ DMA_PREP_INTERRUPT | DMA_COMPL_SKIP_DEST_UNMAP);
+ txdesc->callback = dw_spi_dma_done;
+ txdesc->callback_param = dws;
+
+ /* 3. Prepare the RX dma transfer */
+ rxconf.direction = DMA_FROM_DEVICE;
+ rxconf.src_addr = dws->dma_addr;
+ rxconf.src_maxburst = LNW_DMA_MSIZE_16;
+ rxconf.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+ rxconf.src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
+
+ rxchan->device->device_control(rxchan, DMA_SLAVE_CONFIG,
+ (unsigned long) &rxconf);
+
+ memset(&dws->rx_sgl, 0, sizeof(dws->rx_sgl));
+ dws->rx_sgl.dma_address = dws->rx_dma;
+ dws->rx_sgl.length = dws->len;
+
+ rxdesc = rxchan->device->device_prep_slave_sg(rxchan,
+ &dws->rx_sgl,
+ 1,
+ DMA_FROM_DEVICE,
+ DMA_PREP_INTERRUPT | DMA_COMPL_SKIP_DEST_UNMAP);
+ rxdesc->callback = dw_spi_dma_done;
+ rxdesc->callback_param = dws;
+
+ /* rx must be started before tx due to spi instinct */
+ rxdesc->tx_submit(rxdesc);
+ txdesc->tx_submit(txdesc);
+ return 0;
+}
+
+static struct dw_spi_dma_ops mid_dma_ops = {
+ .dma_init = mid_spi_dma_init,
+ .dma_exit = mid_spi_dma_exit,
+ .dma_transfer = mid_spi_dma_transfer,
+};
+#endif
+
+/* Some specific info for SPI0 controller on Moorestown */
+
+/* HW info for MRST CLk Control Unit, one 32b reg */
+#define MRST_SPI_CLK_BASE 100000000 /* 100m */
+#define MRST_CLK_SPI0_REG 0xff11d86c
+#define CLK_SPI_BDIV_OFFSET 0
+#define CLK_SPI_BDIV_MASK 0x00000007
+#define CLK_SPI_CDIV_OFFSET 9
+#define CLK_SPI_CDIV_MASK 0x00000e00
+#define CLK_SPI_DISABLE_OFFSET 8
+
+int dw_spi_mid_init(struct dw_spi *dws)
+{
+ u32 *clk_reg, clk_cdiv;
+
+ clk_reg = ioremap_nocache(MRST_CLK_SPI0_REG, 16);
+ if (!clk_reg)
+ return -ENOMEM;
+
+ /* get SPI controller operating freq info */
+ clk_cdiv = (readl(clk_reg) & CLK_SPI_CDIV_MASK) >> CLK_SPI_CDIV_OFFSET;
+ dws->max_freq = MRST_SPI_CLK_BASE / (clk_cdiv + 1);
+ iounmap(clk_reg);
+
+ dws->num_cs = 16;
+ dws->fifo_len = 40; /* FIFO has 40 words buffer */
+
+#ifdef CONFIG_SPI_DW_MID_DMA
+ dws->dma_priv = kzalloc(sizeof(struct mid_dma), GFP_KERNEL);
+ if (!dws->dma_priv)
+ return -ENOMEM;
+ dws->dma_ops = &mid_dma_ops;
+#endif
+ return 0;
+}
diff --git a/drivers/spi/dw_spi_pci.c b/drivers/spi/dw_spi_pci.c
index 1f52755dc87..49ec3aa1219 100644
--- a/drivers/spi/dw_spi_pci.c
+++ b/drivers/spi/dw_spi_pci.c
@@ -1,5 +1,5 @@
/*
- * mrst_spi_pci.c - PCI interface driver for DW SPI Core
+ * dw_spi_pci.c - PCI interface driver for DW SPI Core
*
* Copyright (c) 2009, Intel Corporation.
*
@@ -26,8 +26,8 @@
#define DRIVER_NAME "dw_spi_pci"
struct dw_spi_pci {
- struct pci_dev *pdev;
- struct dw_spi dws;
+ struct pci_dev *pdev;
+ struct dw_spi dws;
};
static int __devinit spi_pci_probe(struct pci_dev *pdev,
@@ -72,9 +72,17 @@ static int __devinit spi_pci_probe(struct pci_dev *pdev,
dws->parent_dev = &pdev->dev;
dws->bus_num = 0;
dws->num_cs = 4;
- dws->max_freq = 25000000; /* for Moorestwon */
dws->irq = pdev->irq;
- dws->fifo_len = 40; /* FIFO has 40 words buffer */
+
+ /*
+ * Specific handling for Intel MID paltforms, like dma setup,
+ * clock rate, FIFO depth.
+ */
+ if (pdev->device == 0x0800) {
+ ret = dw_spi_mid_init(dws);
+ if (ret)
+ goto err_unmap;
+ }
ret = dw_spi_add_host(dws);
if (ret)
@@ -140,7 +148,7 @@ static int spi_resume(struct pci_dev *pdev)
#endif
static const struct pci_device_id pci_ids[] __devinitdata = {
- /* Intel Moorestown platform SPI controller 0 */
+ /* Intel MID platform SPI controller 0 */
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0800) },
{},
};
diff --git a/drivers/spi/mpc52xx_psc_spi.c b/drivers/spi/mpc52xx_psc_spi.c
index 983fbbfce76..8a904c1c848 100644
--- a/drivers/spi/mpc52xx_psc_spi.c
+++ b/drivers/spi/mpc52xx_psc_spi.c
@@ -363,7 +363,7 @@ static irqreturn_t mpc52xx_psc_spi_isr(int irq, void *dev_id)
}
/* bus_num is used only for the case dev->platform_data == NULL */
-static int __init mpc52xx_psc_spi_do_probe(struct device *dev, u32 regaddr,
+static int __devinit mpc52xx_psc_spi_do_probe(struct device *dev, u32 regaddr,
u32 size, unsigned int irq, s16 bus_num)
{
struct fsl_spi_platform_data *pdata = dev->platform_data;
@@ -450,22 +450,7 @@ free_master:
return ret;
}
-static int __exit mpc52xx_psc_spi_do_remove(struct device *dev)
-{
- struct spi_master *master = dev_get_drvdata(dev);
- struct mpc52xx_psc_spi *mps = spi_master_get_devdata(master);
-
- flush_workqueue(mps->workqueue);
- destroy_workqueue(mps->workqueue);
- spi_unregister_master(master);
- free_irq(mps->irq, mps);
- if (mps->psc)
- iounmap(mps->psc);
-
- return 0;
-}
-
-static int __init mpc52xx_psc_spi_of_probe(struct platform_device *op,
+static int __devinit mpc52xx_psc_spi_of_probe(struct platform_device *op,
const struct of_device_id *match)
{
const u32 *regaddr_p;
@@ -495,9 +480,19 @@ static int __init mpc52xx_psc_spi_of_probe(struct platform_device *op,
irq_of_parse_and_map(op->dev.of_node, 0), id);
}
-static int __exit mpc52xx_psc_spi_of_remove(struct platform_device *op)
+static int __devexit mpc52xx_psc_spi_of_remove(struct platform_device *op)
{
- return mpc52xx_psc_spi_do_remove(&op->dev);
+ struct spi_master *master = dev_get_drvdata(&op->dev);
+ struct mpc52xx_psc_spi *mps = spi_master_get_devdata(master);
+
+ flush_workqueue(mps->workqueue);
+ destroy_workqueue(mps->workqueue);
+ spi_unregister_master(master);
+ free_irq(mps->irq, mps);
+ if (mps->psc)
+ iounmap(mps->psc);
+
+ return 0;
}
static const struct of_device_id mpc52xx_psc_spi_of_match[] = {
@@ -510,7 +505,7 @@ MODULE_DEVICE_TABLE(of, mpc52xx_psc_spi_of_match);
static struct of_platform_driver mpc52xx_psc_spi_of_driver = {
.probe = mpc52xx_psc_spi_of_probe,
- .remove = __exit_p(mpc52xx_psc_spi_of_remove),
+ .remove = __devexit_p(mpc52xx_psc_spi_of_remove),
.driver = {
.name = "mpc52xx-psc-spi",
.owner = THIS_MODULE,
diff --git a/drivers/spi/spi_imx.c b/drivers/spi/spi_imx.c
index 55a38e2c6c1..9010ef0385a 100644
--- a/drivers/spi/spi_imx.c
+++ b/drivers/spi/spi_imx.c
@@ -66,7 +66,6 @@ enum spi_imx_devtype {
SPI_IMX_VER_0_5,
SPI_IMX_VER_0_7,
SPI_IMX_VER_2_3,
- SPI_IMX_VER_AUTODETECT,
};
struct spi_imx_data;
@@ -720,9 +719,6 @@ static void spi_imx_cleanup(struct spi_device *spi)
static struct platform_device_id spi_imx_devtype[] = {
{
- .name = DRIVER_NAME,
- .driver_data = SPI_IMX_VER_AUTODETECT,
- }, {
.name = "imx1-cspi",
.driver_data = SPI_IMX_VER_IMX1,
}, {
@@ -802,30 +798,8 @@ static int __devinit spi_imx_probe(struct platform_device *pdev)
init_completion(&spi_imx->xfer_done);
- if (pdev->id_entry->driver_data == SPI_IMX_VER_AUTODETECT) {
- if (cpu_is_mx25() || cpu_is_mx35())
- spi_imx->devtype_data =
- spi_imx_devtype_data[SPI_IMX_VER_0_7];
- else if (cpu_is_mx25() || cpu_is_mx31() || cpu_is_mx35())
- spi_imx->devtype_data =
- spi_imx_devtype_data[SPI_IMX_VER_0_4];
- else if (cpu_is_mx27() || cpu_is_mx21())
- spi_imx->devtype_data =
- spi_imx_devtype_data[SPI_IMX_VER_0_0];
- else if (cpu_is_mx1())
- spi_imx->devtype_data =
- spi_imx_devtype_data[SPI_IMX_VER_IMX1];
- else
- BUG();
- } else
- spi_imx->devtype_data =
- spi_imx_devtype_data[pdev->id_entry->driver_data];
-
- if (!spi_imx->devtype_data.intctrl) {
- dev_err(&pdev->dev, "no support for this device compiled in\n");
- ret = -ENODEV;
- goto out_gpio_free;
- }
+ spi_imx->devtype_data =
+ spi_imx_devtype_data[pdev->id_entry->driver_data];
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
diff --git a/drivers/spi/spi_nuc900.c b/drivers/spi/spi_nuc900.c
index dff63be0d0a..d5be18b3078 100644
--- a/drivers/spi/spi_nuc900.c
+++ b/drivers/spi/spi_nuc900.c
@@ -449,7 +449,7 @@ err_iomap:
release_mem_region(hw->res->start, resource_size(hw->res));
kfree(hw->ioarea);
err_pdata:
- spi_master_put(hw->master);;
+ spi_master_put(hw->master);
err_nomem:
return err;
diff --git a/drivers/spi/spi_topcliff_pch.c b/drivers/spi/spi_topcliff_pch.c
index 58e187f45ec..56b758847c0 100644
--- a/drivers/spi/spi_topcliff_pch.c
+++ b/drivers/spi/spi_topcliff_pch.c
@@ -267,7 +267,7 @@ static void pch_spi_handler_sub(struct pch_spi_data *data, u32 reg_spsr_val,
if (reg_spsr_val & SPSR_FI_BIT) {
/* disable FI & RFI interrupts */
pch_spi_setclr_reg(data->master, PCH_SPCR, 0,
- SPCR_FIE_BIT | SPCR_TFIE_BIT);
+ SPCR_FIE_BIT | SPCR_RFIE_BIT);
/* transfer is completed;inform pch_spi_process_messages */
data->transfer_complete = true;
@@ -679,11 +679,11 @@ static void pch_spi_set_ir(struct pch_spi_data *data)
if ((data->bpw_len) > PCH_MAX_FIFO_DEPTH) {
/* set receive threhold to PCH_RX_THOLD */
pch_spi_setclr_reg(data->master, PCH_SPCR,
- PCH_RX_THOLD << SPCR_TFIC_FIELD,
- ~MASK_TFIC_SPCR_BITS);
+ PCH_RX_THOLD << SPCR_RFIC_FIELD,
+ ~MASK_RFIC_SPCR_BITS);
/* enable FI and RFI interrupts */
pch_spi_setclr_reg(data->master, PCH_SPCR,
- SPCR_RFIE_BIT | SPCR_TFIE_BIT, 0);
+ SPCR_RFIE_BIT | SPCR_FIE_BIT, 0);
} else {
/* set receive threhold to maximum */
pch_spi_setclr_reg(data->master, PCH_SPCR,
diff --git a/drivers/spi/xilinx_spi.c b/drivers/spi/xilinx_spi.c
index 80f2db5bcfd..7adaef62a99 100644
--- a/drivers/spi/xilinx_spi.c
+++ b/drivers/spi/xilinx_spi.c
@@ -1,26 +1,27 @@
/*
- * xilinx_spi.c
- *
* Xilinx SPI controller driver (master mode only)
*
* Author: MontaVista Software, Inc.
* source@mvista.com
*
- * 2002-2007 (c) MontaVista Software, Inc. This file is licensed under the
- * terms of the GNU General Public License version 2. This program is licensed
- * "as is" without any warranty of any kind, whether express or implied.
+ * Copyright (c) 2010 Secret Lab Technologies, Ltd.
+ * Copyright (c) 2009 Intel Corporation
+ * 2002-2007 (c) MontaVista Software, Inc.
+
+ * 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/module.h>
#include <linux/init.h>
#include <linux/interrupt.h>
-
+#include <linux/of.h>
+#include <linux/platform_device.h>
#include <linux/spi/spi.h>
#include <linux/spi/spi_bitbang.h>
-#include <linux/io.h>
-
-#include "xilinx_spi.h"
#include <linux/spi/xilinx_spi.h>
+#include <linux/io.h>
#define XILINX_SPI_NAME "xilinx_spi"
@@ -350,19 +351,22 @@ static irqreturn_t xilinx_spi_irq(int irq, void *dev_id)
return IRQ_HANDLED;
}
+#ifdef CONFIG_OF
+static const struct of_device_id xilinx_spi_of_match[] = {
+ { .compatible = "xlnx,xps-spi-2.00.a", },
+ { .compatible = "xlnx,xps-spi-2.00.b", },
+ {}
+};
+MODULE_DEVICE_TABLE(of, xilinx_spi_of_match);
+#endif
+
struct spi_master *xilinx_spi_init(struct device *dev, struct resource *mem,
- u32 irq, s16 bus_num)
+ u32 irq, s16 bus_num, int num_cs, int little_endian, int bits_per_word)
{
struct spi_master *master;
struct xilinx_spi *xspi;
- struct xspi_platform_data *pdata = dev->platform_data;
int ret;
- if (!pdata) {
- dev_err(dev, "No platform data attached\n");
- return NULL;
- }
-
master = spi_alloc_master(dev, sizeof(struct xilinx_spi));
if (!master)
return NULL;
@@ -389,21 +393,21 @@ struct spi_master *xilinx_spi_init(struct device *dev, struct resource *mem,
}
master->bus_num = bus_num;
- master->num_chipselect = pdata->num_chipselect;
+ master->num_chipselect = num_cs;
#ifdef CONFIG_OF
master->dev.of_node = dev->of_node;
#endif
xspi->mem = *mem;
xspi->irq = irq;
- if (pdata->little_endian) {
+ if (little_endian) {
xspi->read_fn = xspi_read32;
xspi->write_fn = xspi_write32;
} else {
xspi->read_fn = xspi_read32_be;
xspi->write_fn = xspi_write32_be;
}
- xspi->bits_per_word = pdata->bits_per_word;
+ xspi->bits_per_word = bits_per_word;
if (xspi->bits_per_word == 8) {
xspi->tx_fn = xspi_tx8;
xspi->rx_fn = xspi_rx8;
@@ -462,6 +466,97 @@ void xilinx_spi_deinit(struct spi_master *master)
}
EXPORT_SYMBOL(xilinx_spi_deinit);
+static int __devinit xilinx_spi_probe(struct platform_device *dev)
+{
+ struct xspi_platform_data *pdata;
+ struct resource *r;
+ int irq, num_cs = 0, little_endian = 0, bits_per_word = 8;
+ struct spi_master *master;
+ u8 i;
+
+ pdata = dev->dev.platform_data;
+ if (pdata) {
+ num_cs = pdata->num_chipselect;
+ little_endian = pdata->little_endian;
+ bits_per_word = pdata->bits_per_word;
+ }
+
+#ifdef CONFIG_OF
+ if (dev->dev.of_node) {
+ const __be32 *prop;
+ int len;
+
+ /* number of slave select bits is required */
+ prop = of_get_property(dev->dev.of_node, "xlnx,num-ss-bits",
+ &len);
+ if (prop && len >= sizeof(*prop))
+ num_cs = __be32_to_cpup(prop);
+ }
+#endif
+
+ if (!num_cs) {
+ dev_err(&dev->dev, "Missing slave select configuration data\n");
+ return -EINVAL;
+ }
+
+
+ r = platform_get_resource(dev, IORESOURCE_MEM, 0);
+ if (!r)
+ return -ENODEV;
+
+ irq = platform_get_irq(dev, 0);
+ if (irq < 0)
+ return -ENXIO;
+
+ master = xilinx_spi_init(&dev->dev, r, irq, dev->id, num_cs,
+ little_endian, bits_per_word);
+ if (!master)
+ return -ENODEV;
+
+ if (pdata) {
+ for (i = 0; i < pdata->num_devices; i++)
+ spi_new_device(master, pdata->devices + i);
+ }
+
+ platform_set_drvdata(dev, master);
+ return 0;
+}
+
+static int __devexit xilinx_spi_remove(struct platform_device *dev)
+{
+ xilinx_spi_deinit(platform_get_drvdata(dev));
+ platform_set_drvdata(dev, 0);
+
+ return 0;
+}
+
+/* work with hotplug and coldplug */
+MODULE_ALIAS("platform:" XILINX_SPI_NAME);
+
+static struct platform_driver xilinx_spi_driver = {
+ .probe = xilinx_spi_probe,
+ .remove = __devexit_p(xilinx_spi_remove),
+ .driver = {
+ .name = XILINX_SPI_NAME,
+ .owner = THIS_MODULE,
+#ifdef CONFIG_OF
+ .of_match_table = xilinx_spi_of_match,
+#endif
+ },
+};
+
+static int __init xilinx_spi_pltfm_init(void)
+{
+ return platform_driver_register(&xilinx_spi_driver);
+}
+module_init(xilinx_spi_pltfm_init);
+
+static void __exit xilinx_spi_pltfm_exit(void)
+{
+ platform_driver_unregister(&xilinx_spi_driver);
+}
+module_exit(xilinx_spi_pltfm_exit);
+
MODULE_AUTHOR("MontaVista Software, Inc. <source@mvista.com>");
MODULE_DESCRIPTION("Xilinx SPI driver");
MODULE_LICENSE("GPL");
diff --git a/drivers/spi/xilinx_spi.h b/drivers/spi/xilinx_spi.h
deleted file mode 100644
index d211accf68d..00000000000
--- a/drivers/spi/xilinx_spi.h
+++ /dev/null
@@ -1,32 +0,0 @@
-/*
- * Xilinx SPI device driver API and platform data header file
- *
- * Copyright (c) 2009 Intel Corporation
- *
- * 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.
- *
- * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#ifndef _XILINX_SPI_H_
-#define _XILINX_SPI_H_
-
-#include <linux/spi/spi.h>
-#include <linux/spi/spi_bitbang.h>
-
-#define XILINX_SPI_NAME "xilinx_spi"
-
-struct spi_master *xilinx_spi_init(struct device *dev, struct resource *mem,
- u32 irq, s16 bus_num);
-
-void xilinx_spi_deinit(struct spi_master *master);
-#endif
diff --git a/drivers/spi/xilinx_spi_of.c b/drivers/spi/xilinx_spi_of.c
deleted file mode 100644
index b66c2dbf20a..00000000000
--- a/drivers/spi/xilinx_spi_of.c
+++ /dev/null
@@ -1,133 +0,0 @@
-/*
- * Xilinx SPI OF device driver
- *
- * Copyright (c) 2009 Intel Corporation
- *
- * 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.
- *
- * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-/* Supports:
- * Xilinx SPI devices as OF devices
- *
- * Inspired by xilinx_spi.c, 2002-2007 (c) MontaVista Software, Inc.
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/slab.h>
-
-#include <linux/of_address.h>
-#include <linux/of_platform.h>
-#include <linux/of_device.h>
-#include <linux/of_spi.h>
-
-#include <linux/spi/xilinx_spi.h>
-#include "xilinx_spi.h"
-
-
-static int __devinit xilinx_spi_of_probe(struct platform_device *ofdev,
- const struct of_device_id *match)
-{
- struct spi_master *master;
- struct xspi_platform_data *pdata;
- struct resource r_mem;
- struct resource r_irq;
- int rc = 0;
- const u32 *prop;
- int len;
-
- rc = of_address_to_resource(ofdev->dev.of_node, 0, &r_mem);
- if (rc) {
- dev_warn(&ofdev->dev, "invalid address\n");
- return rc;
- }
-
- rc = of_irq_to_resource(ofdev->dev.of_node, 0, &r_irq);
- if (rc == NO_IRQ) {
- dev_warn(&ofdev->dev, "no IRQ found\n");
- return -ENODEV;
- }
-
- ofdev->dev.platform_data =
- kzalloc(sizeof(struct xspi_platform_data), GFP_KERNEL);
- pdata = ofdev->dev.platform_data;
- if (!pdata)
- return -ENOMEM;
-
- /* number of slave select bits is required */
- prop = of_get_property(ofdev->dev.of_node, "xlnx,num-ss-bits", &len);
- if (!prop || len < sizeof(*prop)) {
- dev_warn(&ofdev->dev, "no 'xlnx,num-ss-bits' property\n");
- return -EINVAL;
- }
- pdata->num_chipselect = *prop;
- pdata->bits_per_word = 8;
- master = xilinx_spi_init(&ofdev->dev, &r_mem, r_irq.start, -1);
- if (!master)
- return -ENODEV;
-
- dev_set_drvdata(&ofdev->dev, master);
-
- return 0;
-}
-
-static int __devexit xilinx_spi_remove(struct platform_device *ofdev)
-{
- xilinx_spi_deinit(dev_get_drvdata(&ofdev->dev));
- dev_set_drvdata(&ofdev->dev, 0);
- kfree(ofdev->dev.platform_data);
- ofdev->dev.platform_data = NULL;
- return 0;
-}
-
-static int __exit xilinx_spi_of_remove(struct platform_device *op)
-{
- return xilinx_spi_remove(op);
-}
-
-static const struct of_device_id xilinx_spi_of_match[] = {
- { .compatible = "xlnx,xps-spi-2.00.a", },
- { .compatible = "xlnx,xps-spi-2.00.b", },
- {}
-};
-
-MODULE_DEVICE_TABLE(of, xilinx_spi_of_match);
-
-static struct of_platform_driver xilinx_spi_of_driver = {
- .probe = xilinx_spi_of_probe,
- .remove = __exit_p(xilinx_spi_of_remove),
- .driver = {
- .name = "xilinx-xps-spi",
- .owner = THIS_MODULE,
- .of_match_table = xilinx_spi_of_match,
- },
-};
-
-static int __init xilinx_spi_of_init(void)
-{
- return of_register_platform_driver(&xilinx_spi_of_driver);
-}
-module_init(xilinx_spi_of_init);
-
-static void __exit xilinx_spi_of_exit(void)
-{
- of_unregister_platform_driver(&xilinx_spi_of_driver);
-}
-module_exit(xilinx_spi_of_exit);
-
-MODULE_AUTHOR("Mocean Laboratories <info@mocean-labs.com>");
-MODULE_DESCRIPTION("Xilinx SPI platform driver");
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/spi/xilinx_spi_pltfm.c b/drivers/spi/xilinx_spi_pltfm.c
deleted file mode 100644
index 24debac646a..00000000000
--- a/drivers/spi/xilinx_spi_pltfm.c
+++ /dev/null
@@ -1,102 +0,0 @@
-/*
- * Support for Xilinx SPI platform devices
- * Copyright (c) 2009 Intel Corporation
- *
- * 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.
- *
- * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-/* Supports:
- * Xilinx SPI devices as platform devices
- *
- * Inspired by xilinx_spi.c, 2002-2007 (c) MontaVista Software, Inc.
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/platform_device.h>
-
-#include <linux/spi/spi.h>
-#include <linux/spi/spi_bitbang.h>
-#include <linux/spi/xilinx_spi.h>
-
-#include "xilinx_spi.h"
-
-static int __devinit xilinx_spi_probe(struct platform_device *dev)
-{
- struct xspi_platform_data *pdata;
- struct resource *r;
- int irq;
- struct spi_master *master;
- u8 i;
-
- pdata = dev->dev.platform_data;
- if (!pdata)
- return -ENODEV;
-
- r = platform_get_resource(dev, IORESOURCE_MEM, 0);
- if (!r)
- return -ENODEV;
-
- irq = platform_get_irq(dev, 0);
- if (irq < 0)
- return -ENXIO;
-
- master = xilinx_spi_init(&dev->dev, r, irq, dev->id);
- if (!master)
- return -ENODEV;
-
- for (i = 0; i < pdata->num_devices; i++)
- spi_new_device(master, pdata->devices + i);
-
- platform_set_drvdata(dev, master);
- return 0;
-}
-
-static int __devexit xilinx_spi_remove(struct platform_device *dev)
-{
- xilinx_spi_deinit(platform_get_drvdata(dev));
- platform_set_drvdata(dev, 0);
-
- return 0;
-}
-
-/* work with hotplug and coldplug */
-MODULE_ALIAS("platform:" XILINX_SPI_NAME);
-
-static struct platform_driver xilinx_spi_driver = {
- .probe = xilinx_spi_probe,
- .remove = __devexit_p(xilinx_spi_remove),
- .driver = {
- .name = XILINX_SPI_NAME,
- .owner = THIS_MODULE,
- },
-};
-
-static int __init xilinx_spi_pltfm_init(void)
-{
- return platform_driver_register(&xilinx_spi_driver);
-}
-module_init(xilinx_spi_pltfm_init);
-
-static void __exit xilinx_spi_pltfm_exit(void)
-{
- platform_driver_unregister(&xilinx_spi_driver);
-}
-module_exit(xilinx_spi_pltfm_exit);
-
-MODULE_AUTHOR("Mocean Laboratories <info@mocean-labs.com>");
-MODULE_DESCRIPTION("Xilinx SPI platform driver");
-MODULE_LICENSE("GPL v2");
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-04 16:40:01 +0000