summaryrefslogtreecommitdiffstats
path: root/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'drivers')
-rw-r--r--drivers/dma/sh/shdma-base.c9
-rw-r--r--drivers/dma/sh/shdma.c12
-rw-r--r--drivers/sh/intc/Kconfig4
-rw-r--r--drivers/sh/intc/Makefile2
-rw-r--r--drivers/sh/intc/core.c11
-rw-r--r--drivers/sh/intc/internals.h5
-rw-r--r--drivers/sh/intc/irqdomain.c68
-rw-r--r--drivers/sh/pfc/pinctrl.c34
-rw-r--r--drivers/tty/serial/sh-sci.c5
9 files changed, 124 insertions, 26 deletions
diff --git a/drivers/dma/sh/shdma-base.c b/drivers/dma/sh/shdma-base.c
index 27f5c781fd7..f4cd946d259 100644
--- a/drivers/dma/sh/shdma-base.c
+++ b/drivers/dma/sh/shdma-base.c
@@ -483,6 +483,7 @@ static struct shdma_desc *shdma_add_desc(struct shdma_chan *schan,
new->mark = DESC_PREPARED;
new->async_tx.flags = flags;
new->direction = direction;
+ new->partial = 0;
*len -= copy_size;
if (direction == DMA_MEM_TO_MEM || direction == DMA_MEM_TO_DEV)
@@ -644,6 +645,14 @@ static int shdma_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
case DMA_TERMINATE_ALL:
spin_lock_irqsave(&schan->chan_lock, flags);
ops->halt_channel(schan);
+
+ if (ops->get_partial && !list_empty(&schan->ld_queue)) {
+ /* Record partial transfer */
+ struct shdma_desc *desc = list_first_entry(&schan->ld_queue,
+ struct shdma_desc, node);
+ desc->partial = ops->get_partial(schan, desc);
+ }
+
spin_unlock_irqrestore(&schan->chan_lock, flags);
shdma_chan_ld_cleanup(schan, true);
diff --git a/drivers/dma/sh/shdma.c b/drivers/dma/sh/shdma.c
index 027c9be9765..f41bcc5267f 100644
--- a/drivers/dma/sh/shdma.c
+++ b/drivers/dma/sh/shdma.c
@@ -381,6 +381,17 @@ static bool sh_dmae_chan_irq(struct shdma_chan *schan, int irq)
return true;
}
+static size_t sh_dmae_get_partial(struct shdma_chan *schan,
+ struct shdma_desc *sdesc)
+{
+ struct sh_dmae_chan *sh_chan = container_of(schan, struct sh_dmae_chan,
+ shdma_chan);
+ struct sh_dmae_desc *sh_desc = container_of(sdesc,
+ struct sh_dmae_desc, shdma_desc);
+ return (sh_desc->hw.tcr - sh_dmae_readl(sh_chan, TCR)) <<
+ sh_chan->xmit_shift;
+}
+
/* Called from error IRQ or NMI */
static bool sh_dmae_reset(struct sh_dmae_device *shdev)
{
@@ -632,6 +643,7 @@ static const struct shdma_ops sh_dmae_shdma_ops = {
.start_xfer = sh_dmae_start_xfer,
.embedded_desc = sh_dmae_embedded_desc,
.chan_irq = sh_dmae_chan_irq,
+ .get_partial = sh_dmae_get_partial,
};
static int __devinit sh_dmae_probe(struct platform_device *pdev)
diff --git a/drivers/sh/intc/Kconfig b/drivers/sh/intc/Kconfig
index c88cbccc62b..a305731742a 100644
--- a/drivers/sh/intc/Kconfig
+++ b/drivers/sh/intc/Kconfig
@@ -1,3 +1,7 @@
+config SH_INTC
+ def_bool y
+ select IRQ_DOMAIN
+
comment "Interrupt controller options"
config INTC_USERIMASK
diff --git a/drivers/sh/intc/Makefile b/drivers/sh/intc/Makefile
index 44f006d0947..54ec2a0643d 100644
--- a/drivers/sh/intc/Makefile
+++ b/drivers/sh/intc/Makefile
@@ -1,4 +1,4 @@
-obj-y := access.o chip.o core.o handle.o virq.o
+obj-y := access.o chip.o core.o handle.o irqdomain.o virq.o
obj-$(CONFIG_INTC_BALANCING) += balancing.o
obj-$(CONFIG_INTC_USERIMASK) += userimask.o
diff --git a/drivers/sh/intc/core.c b/drivers/sh/intc/core.c
index 7e562ccb699..2374468615e 100644
--- a/drivers/sh/intc/core.c
+++ b/drivers/sh/intc/core.c
@@ -25,6 +25,7 @@
#include <linux/stat.h>
#include <linux/interrupt.h>
#include <linux/sh_intc.h>
+#include <linux/irqdomain.h>
#include <linux/device.h>
#include <linux/syscore_ops.h>
#include <linux/list.h>
@@ -310,6 +311,8 @@ int __init register_intc_controller(struct intc_desc *desc)
BUG_ON(k > 256); /* _INTC_ADDR_E() and _INTC_ADDR_D() are 8 bits */
+ intc_irq_domain_init(d, hw);
+
/* register the vectors one by one */
for (i = 0; i < hw->nr_vectors; i++) {
struct intc_vect *vect = hw->vectors + i;
@@ -319,8 +322,8 @@ int __init register_intc_controller(struct intc_desc *desc)
if (!vect->enum_id)
continue;
- res = irq_alloc_desc_at(irq, numa_node_id());
- if (res != irq && res != -EEXIST) {
+ res = irq_create_identity_mapping(d->domain, irq);
+ if (unlikely(res)) {
pr_err("can't get irq_desc for %d\n", irq);
continue;
}
@@ -340,8 +343,8 @@ int __init register_intc_controller(struct intc_desc *desc)
* IRQ support, each vector still needs to have
* its own backing irq_desc.
*/
- res = irq_alloc_desc_at(irq2, numa_node_id());
- if (res != irq2 && res != -EEXIST) {
+ res = irq_create_identity_mapping(d->domain, irq2);
+ if (unlikely(res)) {
pr_err("can't get irq_desc for %d\n", irq2);
continue;
}
diff --git a/drivers/sh/intc/internals.h b/drivers/sh/intc/internals.h
index f034a979a16..7dff08e2a07 100644
--- a/drivers/sh/intc/internals.h
+++ b/drivers/sh/intc/internals.h
@@ -1,5 +1,6 @@
#include <linux/sh_intc.h>
#include <linux/irq.h>
+#include <linux/irqdomain.h>
#include <linux/list.h>
#include <linux/kernel.h>
#include <linux/types.h>
@@ -66,6 +67,7 @@ struct intc_desc_int {
unsigned int nr_sense;
struct intc_window *window;
unsigned int nr_windows;
+ struct irq_domain *domain;
struct irq_chip chip;
bool skip_suspend;
};
@@ -187,6 +189,9 @@ unsigned long intc_get_ack_handle(unsigned int irq);
void intc_enable_disable_enum(struct intc_desc *desc, struct intc_desc_int *d,
intc_enum enum_id, int enable);
+/* irqdomain.c */
+void intc_irq_domain_init(struct intc_desc_int *d, struct intc_hw_desc *hw);
+
/* virq.c */
void intc_subgroup_init(struct intc_desc *desc, struct intc_desc_int *d);
void intc_irq_xlate_set(unsigned int irq, intc_enum id, struct intc_desc_int *d);
diff --git a/drivers/sh/intc/irqdomain.c b/drivers/sh/intc/irqdomain.c
new file mode 100644
index 00000000000..3968f1c3c5c
--- /dev/null
+++ b/drivers/sh/intc/irqdomain.c
@@ -0,0 +1,68 @@
+/*
+ * IRQ domain support for SH INTC subsystem
+ *
+ * Copyright (C) 2012 Paul Mundt
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#define pr_fmt(fmt) "intc: " fmt
+
+#include <linux/irqdomain.h>
+#include <linux/sh_intc.h>
+#include <linux/export.h>
+#include "internals.h"
+
+/**
+ * intc_irq_domain_evt_xlate() - Generic xlate for vectored IRQs.
+ *
+ * This takes care of exception vector to hwirq translation through
+ * by way of evt2irq() translation.
+ *
+ * Note: For platforms that use a flat vector space without INTEVT this
+ * basically just mimics irq_domain_xlate_onecell() by way of a nopped
+ * out evt2irq() implementation.
+ */
+static int intc_evt_xlate(struct irq_domain *d, struct device_node *ctrlr,
+ const u32 *intspec, unsigned int intsize,
+ unsigned long *out_hwirq, unsigned int *out_type)
+{
+ if (WARN_ON(intsize < 1))
+ return -EINVAL;
+
+ *out_hwirq = evt2irq(intspec[0]);
+ *out_type = IRQ_TYPE_NONE;
+
+ return 0;
+}
+
+static const struct irq_domain_ops intc_evt_ops = {
+ .xlate = intc_evt_xlate,
+};
+
+void __init intc_irq_domain_init(struct intc_desc_int *d,
+ struct intc_hw_desc *hw)
+{
+ unsigned int irq_base, irq_end;
+
+ /*
+ * Quick linear revmap check
+ */
+ irq_base = evt2irq(hw->vectors[0].vect);
+ irq_end = evt2irq(hw->vectors[hw->nr_vectors - 1].vect);
+
+ /*
+ * Linear domains have a hard-wired assertion that IRQs start at
+ * 0 in order to make some performance optimizations. Lamely
+ * restrict the linear case to these conditions here, taking the
+ * tree penalty for linear cases with non-zero hwirq bases.
+ */
+ if (irq_base == 0 && irq_end == (irq_base + hw->nr_vectors - 1))
+ d->domain = irq_domain_add_linear(NULL, hw->nr_vectors,
+ &intc_evt_ops, NULL);
+ else
+ d->domain = irq_domain_add_tree(NULL, &intc_evt_ops, NULL);
+
+ BUG_ON(!d->domain);
+}
diff --git a/drivers/sh/pfc/pinctrl.c b/drivers/sh/pfc/pinctrl.c
index 0802b6c0d65..2804eaae804 100644
--- a/drivers/sh/pfc/pinctrl.c
+++ b/drivers/sh/pfc/pinctrl.c
@@ -276,7 +276,6 @@ static int sh_pfc_pinconf_set(struct pinctrl_dev *pctldev, unsigned pin,
unsigned long config)
{
struct sh_pfc_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
- struct sh_pfc *pfc = pmx->pfc;
/* Validate the new type */
if (config >= PINMUX_FLAG_TYPE)
@@ -326,20 +325,6 @@ static struct pinctrl_desc sh_pfc_pinctrl_desc = {
.confops = &sh_pfc_pinconf_ops,
};
-int sh_pfc_register_pinctrl(struct sh_pfc *pfc)
-{
- sh_pfc_pmx = kzalloc(sizeof(struct sh_pfc_pinctrl), GFP_KERNEL);
- if (unlikely(!sh_pfc_pmx))
- return -ENOMEM;
-
- spin_lock_init(&sh_pfc_pmx->lock);
-
- sh_pfc_pmx->pfc = pfc;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(sh_pfc_register_pinctrl);
-
static inline void __devinit sh_pfc_map_one_gpio(struct sh_pfc *pfc,
struct sh_pfc_pinctrl *pmx,
struct pinmux_gpio *gpio,
@@ -481,7 +466,6 @@ static int __devexit sh_pfc_pinctrl_remove(struct platform_device *pdev)
{
struct sh_pfc_pinctrl *pmx = platform_get_drvdata(pdev);
- pinctrl_remove_gpio_range(pmx->pctl, &sh_pfc_gpio_range);
pinctrl_unregister(pmx->pctl);
platform_set_drvdata(pdev, NULL);
@@ -507,7 +491,7 @@ static struct platform_device sh_pfc_pinctrl_device = {
.id = -1,
};
-static int __init sh_pfc_pinctrl_init(void)
+static int sh_pfc_pinctrl_init(void)
{
int rc;
@@ -521,10 +505,22 @@ static int __init sh_pfc_pinctrl_init(void)
return rc;
}
+int sh_pfc_register_pinctrl(struct sh_pfc *pfc)
+{
+ sh_pfc_pmx = kzalloc(sizeof(struct sh_pfc_pinctrl), GFP_KERNEL);
+ if (unlikely(!sh_pfc_pmx))
+ return -ENOMEM;
+
+ spin_lock_init(&sh_pfc_pmx->lock);
+
+ sh_pfc_pmx->pfc = pfc;
+
+ return sh_pfc_pinctrl_init();
+}
+EXPORT_SYMBOL_GPL(sh_pfc_register_pinctrl);
+
static void __exit sh_pfc_pinctrl_exit(void)
{
platform_driver_unregister(&sh_pfc_pinctrl_driver);
}
-
-subsys_initcall(sh_pfc_pinctrl_init);
module_exit(sh_pfc_pinctrl_exit);
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index d4d8c9453cd..9be296cf729 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -25,6 +25,7 @@
#include <linux/module.h>
#include <linux/errno.h>
+#include <linux/sh_dma.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/tty.h>
@@ -1410,8 +1411,8 @@ static void work_fn_rx(struct work_struct *work)
/* Handle incomplete DMA receive */
struct tty_struct *tty = port->state->port.tty;
struct dma_chan *chan = s->chan_rx;
- struct sh_desc *sh_desc = container_of(desc, struct sh_desc,
- async_tx);
+ struct shdma_desc *sh_desc = container_of(desc,
+ struct shdma_desc, async_tx);
unsigned long flags;
int count;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-26 02:55:50 +0000