summaryrefslogtreecommitdiff
path: root/drivers/tty
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2014-10-18 18:11:04 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-10-18 18:11:04 -0700
commit52d589a01d4545ce1dc5c3892bb8c7b55edfe714 (patch)
tree864858dae5d01aae411497e926679cf92392b4f6 /drivers/tty
parent0a582821d4f8edf41d9b56ae057ee2002fc275f0 (diff)
parent6b997bab20448cfe85456e4789d5d9222ab6b830 (diff)
Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma
Pull slave-dmaengine updates from Vinod Koul: "For dmaengine contributions we have: - designware cleanup by Andy - my series moving device_control users to dmanegine_xxx APIs for later removal of device_control API - minor fixes spread over drivers mainly mv_xor, pl330, mmp, imx-sdma etc" * 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (60 commits) serial: atmel: add missing dmaengine header dmaengine: remove FSLDMA_EXTERNAL_START dmaengine: freescale: remove FSLDMA_EXTERNAL_START control method carma-fpga: move to fsl_dma_external_start() carma-fpga: use dmaengine_xxx() API dmaengine: freescale: add and export fsl_dma_external_start() dmaengine: add dmaengine_prep_dma_sg() helper video: mx3fb: use dmaengine_terminate_all() API serial: sh-sci: use dmaengine_terminate_all() API net: ks8842: use dmaengine_terminate_all() API mtd: sh_flctl: use dmaengine_terminate_all() API mtd: fsmc_nand: use dmaengine_terminate_all() API V4L2: mx3_camer: use dmaengine_pause() API dmaengine: coh901318: use dmaengine_terminate_all() API pata_arasan_cf: use dmaengine_terminate_all() API dmaengine: edma: check for echan->edesc => NULL in edma_dma_pause() dmaengine: dw: export probe()/remove() and Co to users dmaengine: dw: enable and disable controller when needed dmaengine: dw: always export dw_dma_{en,dis}able dmaengine: dw: introduce dw_dma_on() helper ...
Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/serial/8250/8250.h6
-rw-r--r--drivers/tty/serial/8250/8250_dw.c7
-rw-r--r--drivers/tty/serial/8250/8250_pci.c78
-rw-r--r--drivers/tty/serial/atmel_serial.c1
-rw-r--r--drivers/tty/serial/sh-sci.c2
5 files changed, 73 insertions, 21 deletions
diff --git a/drivers/tty/serial/8250/8250.h b/drivers/tty/serial/8250/8250.h
index 1bcb4b2141a6..cb51be55989e 100644
--- a/drivers/tty/serial/8250/8250.h
+++ b/drivers/tty/serial/8250/8250.h
@@ -16,13 +16,13 @@
#include <linux/dmaengine.h>
struct uart_8250_dma {
+ /* Filter function */
dma_filter_fn fn;
+
+ /* Parameter to the filter function */
void *rx_param;
void *tx_param;
- int rx_chan_id;
- int tx_chan_id;
-
struct dma_slave_config rxconf;
struct dma_slave_config txconf;
diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c
index 57d9df84ce5d..beea6ca73ee5 100644
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -216,10 +216,7 @@ out:
static bool dw8250_dma_filter(struct dma_chan *chan, void *param)
{
- struct dw8250_data *data = param;
-
- return chan->chan_id == data->dma.tx_chan_id ||
- chan->chan_id == data->dma.rx_chan_id;
+ return false;
}
static void dw8250_setup_port(struct uart_8250_port *up)
@@ -399,8 +396,6 @@ static int dw8250_probe(struct platform_device *pdev)
if (!IS_ERR(data->rst))
reset_control_deassert(data->rst);
- data->dma.rx_chan_id = -1;
- data->dma.tx_chan_id = -1;
data->dma.rx_param = data;
data->dma.tx_param = data;
data->dma.fn = dw8250_dma_filter;
diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
index 4f1cd296f1b1..beb9d71cd47a 100644
--- a/drivers/tty/serial/8250/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c
@@ -25,6 +25,9 @@
#include <asm/byteorder.h>
#include <asm/io.h>
+#include <linux/dmaengine.h>
+#include <linux/platform_data/dma-dw.h>
+
#include "8250.h"
/*
@@ -1349,6 +1352,9 @@ ce4100_serial_setup(struct serial_private *priv,
#define PCI_DEVICE_ID_INTEL_BYT_UART1 0x0f0a
#define PCI_DEVICE_ID_INTEL_BYT_UART2 0x0f0c
+#define PCI_DEVICE_ID_INTEL_BSW_UART1 0x228a
+#define PCI_DEVICE_ID_INTEL_BSW_UART2 0x228c
+
#define BYT_PRV_CLK 0x800
#define BYT_PRV_CLK_EN (1 << 0)
#define BYT_PRV_CLK_M_VAL_SHIFT 1
@@ -1414,7 +1420,13 @@ byt_set_termios(struct uart_port *p, struct ktermios *termios,
static bool byt_dma_filter(struct dma_chan *chan, void *param)
{
- return chan->chan_id == *(int *)param;
+ struct dw_dma_slave *dws = param;
+
+ if (dws->dma_dev != chan->device->dev)
+ return false;
+
+ chan->private = dws;
+ return true;
}
static int
@@ -1422,35 +1434,57 @@ byt_serial_setup(struct serial_private *priv,
const struct pciserial_board *board,
struct uart_8250_port *port, int idx)
{
+ struct pci_dev *pdev = priv->dev;
+ struct device *dev = port->port.dev;
struct uart_8250_dma *dma;
+ struct dw_dma_slave *tx_param, *rx_param;
+ struct pci_dev *dma_dev;
int ret;
- dma = devm_kzalloc(port->port.dev, sizeof(*dma), GFP_KERNEL);
+ dma = devm_kzalloc(dev, sizeof(*dma), GFP_KERNEL);
if (!dma)
return -ENOMEM;
- switch (priv->dev->device) {
+ tx_param = devm_kzalloc(dev, sizeof(*tx_param), GFP_KERNEL);
+ if (!tx_param)
+ return -ENOMEM;
+
+ rx_param = devm_kzalloc(dev, sizeof(*rx_param), GFP_KERNEL);
+ if (!rx_param)
+ return -ENOMEM;
+
+ switch (pdev->device) {
case PCI_DEVICE_ID_INTEL_BYT_UART1:
- dma->rx_chan_id = 3;
- dma->tx_chan_id = 2;
+ case PCI_DEVICE_ID_INTEL_BSW_UART1:
+ rx_param->src_id = 3;
+ tx_param->dst_id = 2;
break;
case PCI_DEVICE_ID_INTEL_BYT_UART2:
- dma->rx_chan_id = 5;
- dma->tx_chan_id = 4;
+ case PCI_DEVICE_ID_INTEL_BSW_UART2:
+ rx_param->src_id = 5;
+ tx_param->dst_id = 4;
break;
default:
return -EINVAL;
}
- dma->rxconf.slave_id = dma->rx_chan_id;
+ rx_param->src_master = 1;
+ rx_param->dst_master = 0;
+
dma->rxconf.src_maxburst = 16;
- dma->txconf.slave_id = dma->tx_chan_id;
+ tx_param->src_master = 1;
+ tx_param->dst_master = 0;
+
dma->txconf.dst_maxburst = 16;
+ dma_dev = pci_get_slot(pdev->bus, PCI_DEVFN(PCI_SLOT(pdev->devfn), 0));
+ rx_param->dma_dev = &dma_dev->dev;
+ tx_param->dma_dev = &dma_dev->dev;
+
dma->fn = byt_dma_filter;
- dma->rx_param = &dma->rx_chan_id;
- dma->tx_param = &dma->tx_chan_id;
+ dma->rx_param = rx_param;
+ dma->tx_param = tx_param;
ret = pci_default_setup(priv, board, port, idx);
port->port.iotype = UPIO_MEM;
@@ -1893,6 +1927,20 @@ static struct pci_serial_quirk pci_serial_quirks[] __refdata = {
.subdevice = PCI_ANY_ID,
.setup = pci_default_setup,
},
+ {
+ .vendor = PCI_VENDOR_ID_INTEL,
+ .device = PCI_DEVICE_ID_INTEL_BSW_UART1,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .setup = byt_serial_setup,
+ },
+ {
+ .vendor = PCI_VENDOR_ID_INTEL,
+ .device = PCI_DEVICE_ID_INTEL_BSW_UART2,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .setup = byt_serial_setup,
+ },
/*
* ITE
*/
@@ -5192,6 +5240,14 @@ static struct pci_device_id serial_pci_tbl[] = {
PCI_ANY_ID, PCI_ANY_ID,
PCI_CLASS_COMMUNICATION_SERIAL << 8, 0xff0000,
pbn_byt },
+ { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BSW_UART1,
+ PCI_ANY_ID, PCI_ANY_ID,
+ PCI_CLASS_COMMUNICATION_SERIAL << 8, 0xff0000,
+ pbn_byt },
+ { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BSW_UART2,
+ PCI_ANY_ID, PCI_ANY_ID,
+ PCI_CLASS_COMMUNICATION_SERIAL << 8, 0xff0000,
+ pbn_byt },
/*
* Intel Quark x1000
diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
index d7d4584549a5..edde3eca055d 100644
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -37,6 +37,7 @@
#include <linux/of_device.h>
#include <linux/of_gpio.h>
#include <linux/dma-mapping.h>
+#include <linux/dmaengine.h>
#include <linux/atmel_pdc.h>
#include <linux/atmel_serial.h>
#include <linux/uaccess.h>
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index 3081e46085ce..eb17c7124e72 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -1403,7 +1403,7 @@ static void work_fn_rx(struct work_struct *work)
unsigned long flags;
int count;
- chan->device->device_control(chan, DMA_TERMINATE_ALL, 0);
+ dmaengine_terminate_all(chan);
dev_dbg(port->dev, "Read %zu bytes with cookie %d\n",
sh_desc->partial, sh_desc->cookie);