[PATCH 1/8] SH: intc: Add support OF for INTC
Simon Horman
horms+renesas at verge.net.au
Wed Jan 9 01:30:00 EST 2013
From: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj at renesas.com>
This provides OF support of SH/INTC.
The SH/INTC driver is used by SuperH and ARM/SH-MOBILE.
At the moment, SuperH does not have the plan corresponding to DT.
DT of SH/INTC has taken the form where the table data of the C
is managed by DT, in order to maintain compatibility.
Cc: Magnus Damm <damm at opensource.se>
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj at renesas.com>
Signed-off-by: Simon Horman <horms+renesas at verge.net.au>
---
v9
* As suggested by Mark Rutland
- Update compatible string to use '-' instead of '_'
- Enhance documentation
- Remove group_size, it can be calculated
- Allow missing traling reg
* Add intc_groups and remove group_size.
The number of groups can be calculated by
containing them in a intc_groups node.
v8
* Squash "SH: intc: Add support OF of IRQ" into this patch
* Change patch title from "ARM: shmobile: Add support OF for INTC of shmobile"
to "SH: intc: Add support OF for INTC"
v7
* Delete "renesas,sh_intcs" and "renesas,sh_intca_irq_pins" as compatible.
Update their documentation.
* Remove of_sh_intc_get_meminfo() and of_sh_intc_get_pint and
of_sh_intc_get_intc(). They are not used.
v2 - v6
* No change
---
Documentation/devicetree/bindings/sh/intc.txt | 191 ++++++++
drivers/sh/intc/Makefile | 1 +
drivers/sh/intc/core.c | 2 +-
drivers/sh/intc/internals.h | 3 +-
drivers/sh/intc/irqdomain.c | 6 +-
drivers/sh/intc/of_intc.c | 577 +++++++++++++++++++++++++
include/linux/sh_intc.h | 56 +++
7 files changed, 831 insertions(+), 5 deletions(-)
create mode 100644 Documentation/devicetree/bindings/sh/intc.txt
create mode 100644 drivers/sh/intc/of_intc.c
diff --git a/Documentation/devicetree/bindings/sh/intc.txt b/Documentation/devicetree/bindings/sh/intc.txt
new file mode 100644
index 0000000..eb605ce
--- /dev/null
+++ b/Documentation/devicetree/bindings/sh/intc.txt
@@ -0,0 +1,191 @@
+* Renesas SuperH / SH-MOBILE Interrupt Controller
+
+The SH/INTC driver is used by SuperH and ARM/SH-MOBILE.
+At the moment, SuperH does not have the plan corresponding to DT.
+DT of SH/INTC has taken the form where the table data of the C
+is managed by DT, in order to maintain compatibility.
+
+The main node requires the following properties:
+
+- compatible : "renesas,sh-intc"
+
+- interrupt-controller : Identifies the node as an interrupt controller
+- #interrupt-cells : Must be 1
+- #address-cells : Must be 1
+- #size-cells : Must be 1
+- ranges : Empty as we have a 1-1 mapping to parent's
+ address space
+- reg : Specifies base physical address(s) and size of
+ the INTC registers
+- intsrc* : Interrupt source
+ Associate an interrupt source with its vector
+
+- *_registers : These describe the vector table, mask, priority, ack,
+ and sense registers. It must contain the following:
+
+ -- intc_vectors : This describes the interrupt sources
+ This node requires the following property:
+ *vector_table : List of interrupt sources
+
+ -- intc_mask_registers : This specifies the contents of the mask registers
+ This node requires the following properties:
+ * address-cells : Must be 1
+ * size-cells : Must be 1
+ * ranges : Empty as we have a 1-1 mapping to parent's
+ address space
+ * intc_mask* : A mask register
+ This node requires the following properties:
+ ** reg : This specifies the address of mask registers.
+ The first entry specifies the mask register and
+ the second entry specifies the mask clear
+ register. The first cell is the register's
+ address, and the second cell is the register's size
+ which must be 1, 2 or 4 bytes.
+ ** reginfo : This specifies the interrupt sources controlled by
+ the mask. The list entries correspond to bits of
+ the mask from most to least significant. A value
+ of 0 may be used for unused bits in the mask.
+ Trailing list entries may be omitted in which
+ case they will be treated as 0.
+
+ -- intc_prio_registers : This sets up the contents of the priority registers
+ This node requires the following properties:
+ * address-cells : Must be 1
+ * size-cells : Must be 1
+ * ranges : Empty as we have a 1-1 mapping to parent's
+ address space
+ * intc_prio* : A sense register
+ This node requires the following properties:
+ ** reg : This specifies the address of the priority register.
+ The first entry specifies the priority set
+ register and the second entry specifies priority
+ clear register. The first cell is the register's
+ address, and the second cell is the register's
+ size which must be 1, 2 or 4 bytes. If there is
+ not priority clear register then they entry may
+ be omitted or 0 used as the register's address.
+ ** field-width: Width of each group in the register in bits.
+ A group contains the priority for a single
+ interrupt vector. Thus a 16 bit register with
+ a field-width of 4 may control the priority for
+ 4 (16 / 4) interrupt sources.
+ ** reginfo : This specifies the interrupt sources or interrupt
+ source groups controlled by the priority register.
+ The list entries correspond to the groups of the
+ priority register from least to most significant.
+ A value of 0 may be used for unused groups.
+ Trailing list entries may be omitted in which
+ case they will be treated as 0.
+
+ -- intc_sense_registers : This sets up the contents of the sense registers
+ This node requires the following properties:
+ * address-cells : Must be 1
+ * size-cells : Must be 1
+ * ranges : Empty as we have a 1-1 mapping to parent's
+ address space
+ * intc_prio* : A sense register
+ This node requires the following properties:
+ ** reg : This specifies the address of the sense register.
+ The first cell is the register's address, and the
+ second cell is the register's size which must be
+ 1, 2 or 4 bytes.
+ ** field-width: Width of each group in the register in bits.
+ A group contains the priority for a single
+ interrupt vector. Thus a 16 bit register with
+ a field-width of 4 may control the priority for
+ 4 (16 / 4) interrupt sources.
+ ** reginfo : This specifies the interrupt sources controlled by
+ the sense register. The list entries correspond
+ to the groups of the priority register from least
+ to most significant. A value of 0 may be used
+ for unused groups. Trailing list entries may be
+ omitted in which case they will be treated as 0.
+
+ -- intc_ack_registers : This sets up the contents of the ACK registers
+ This node requires the following properties:
+ * address-cells : Must be 1
+ * size-cells : Must be 1
+ * ranges : Empty as we have a 1-1 mapping to parent's
+ address space
+ * intc_ack* : An ACK registers
+ This node requires the following properties:
+ ** reg : This specifies the address of the ACK register.
+ The first cell is the register's address, and the
+ second cell is the register's size which must be
+ 1, 2 or 4 bytes.
+ ** reginfo : This specifies the interrupt sources controlled by
+ the ACK register. The list entries correspond to
+ bits of the ACK register from most to least
+ significant. A value of 0 may be used for unused
+ bits in the mask. Trailing list entries may be
+ omitted in which case they will be treated as 0.
+
+Optional:
+
+- intc_groups : The interrupt source groups
+ Interrupt sources may be grouped with a group
+ sharing the same bits of an interrupt priority
+ register.
+ This node requires the following property:
+ * intc_group* : An interrupt source group
+ This node requires the following property:
+ ** group : The list of interrupt sources that
+ belong to the group.
+
+- intc_intevtsa : This sets up the contents of INTEVTSA.
+ This node requires the following properties:
+ * vector : This specifies the interrupt source
+
+Example:
+
+ intca: interrupt-controller at 0 {
+ compatible = "renesas,sh_intc";
+ interrupt-controller;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ #interrupt-cells = <1>;
+ ranges;
+
+ reg = <0xe6940000 0x200>, <0xe6950000 0x200>;
+ group_size = <19>;
+
+ DIRC: intsrc1 { vector = <0x0560>; };
+ ATAPI: intsrc2 { vector = <0x05E0>; };
+ ....
+
+ DMAC1_1: intc_group0 { group = <&DMAC1_1_DEI0 &DMAC1_1_DEI1
+ &DMAC1_1_DEI2 &DMAC1_1_DEI3>; };
+ DMAC1_2: intc_group1 { group = <&DMAC1_2_DEI4 &DMAC1_2_DEI5
+ &DMAC1_2_DADERR>; };
+ ....
+ intc_vectors {
+ vector_table = <&DIRC &ATAPI &IIC1_ALI &IIC1_TACKI &IIC1_WAITI,
+ ....
+ };
+
+ intc_mask_registers {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ intc_mask0 {
+ reg = <0xe6940080 1>, <0xe69400c0 1>;
+ reginfo = <&DMAC2_1_DEI3 &DMAC2_1_DEI2 &DMAC2_1_DEI1
+ &DMAC2_1_DEI0 0 0 &AP_ARM_COMMTX &AP_ARM_COMMRX>;
+ };
+ ....
+ };
+
+ intc_prio_registers {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ intc_prio0 {
+ reg = <0xe6940000 2>;
+ field-width = <4>;
+ reginfo = <&DMAC3_1 &DMAC3_2 &CMT2 &ICBS0>;
+ };
+ ....
+ };
+ };
diff --git a/drivers/sh/intc/Makefile b/drivers/sh/intc/Makefile
index 54ec2a0..b53ab7e 100644
--- a/drivers/sh/intc/Makefile
+++ b/drivers/sh/intc/Makefile
@@ -3,3 +3,4 @@ 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
obj-$(CONFIG_INTC_MAPPING_DEBUG) += virq-debugfs.o
+obj-$(CONFIG_OF) += of_intc.o
diff --git a/drivers/sh/intc/core.c b/drivers/sh/intc/core.c
index 8f32a13..3963af3 100644
--- a/drivers/sh/intc/core.c
+++ b/drivers/sh/intc/core.c
@@ -311,7 +311,7 @@ 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);
+ intc_irq_domain_init(d, hw, desc->of_node);
/* register the vectors one by one */
for (i = 0; i < hw->nr_vectors; i++) {
diff --git a/drivers/sh/intc/internals.h b/drivers/sh/intc/internals.h
index 7dff08e..e6f64bf 100644
--- a/drivers/sh/intc/internals.h
+++ b/drivers/sh/intc/internals.h
@@ -190,7 +190,8 @@ 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);
+void intc_irq_domain_init(struct intc_desc_int *d, struct intc_hw_desc *hw,
+ struct device_node *of_node);
/* virq.c */
void intc_subgroup_init(struct intc_desc *desc, struct intc_desc_int *d);
diff --git a/drivers/sh/intc/irqdomain.c b/drivers/sh/intc/irqdomain.c
index 3968f1c..c56c736 100644
--- a/drivers/sh/intc/irqdomain.c
+++ b/drivers/sh/intc/irqdomain.c
@@ -42,7 +42,7 @@ static const struct irq_domain_ops intc_evt_ops = {
};
void __init intc_irq_domain_init(struct intc_desc_int *d,
- struct intc_hw_desc *hw)
+ struct intc_hw_desc *hw, struct device_node *np)
{
unsigned int irq_base, irq_end;
@@ -59,10 +59,10 @@ void __init intc_irq_domain_init(struct intc_desc_int *d,
* 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,
+ d->domain = irq_domain_add_linear(np, hw->nr_vectors,
&intc_evt_ops, NULL);
else
- d->domain = irq_domain_add_tree(NULL, &intc_evt_ops, NULL);
+ d->domain = irq_domain_add_tree(np, &intc_evt_ops, NULL);
BUG_ON(!d->domain);
}
diff --git a/drivers/sh/intc/of_intc.c b/drivers/sh/intc/of_intc.c
new file mode 100644
index 0000000..1d5f47e
--- /dev/null
+++ b/drivers/sh/intc/of_intc.c
@@ -0,0 +1,577 @@
+/*
+ * OF helpers for SH intc
+ *
+ * Copyright (C) 2012 Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj at renesas.com>
+ * Copyright (C) 2012 Renesas Solutions Corp.
+ *
+ * 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; version 2 of the License.
+ *
+ * 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 St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/string.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+#include <linux/sh_intc.h>
+#include <linux/of.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+#include <linux/of_address.h>
+
+static int __init of_sh_intc_get_reg_addrs(struct device_node *np,
+ unsigned long *set_reg, unsigned long *clr_reg,
+ unsigned long *reg_width,
+ unsigned long *field_width)
+{
+ struct resource res;
+ int err;
+
+ if (set_reg) {
+ err = of_address_to_resource(np, 0, &res);
+ if (err)
+ return err;
+ *set_reg = res.start;
+ }
+
+ if (resource_size(&res) && reg_width)
+ *reg_width = resource_size(&res) * 8; /* byte */
+
+ if (clr_reg) {
+ err = of_address_to_resource(np, 1, &res);
+ /* It is ok for this to be missing */
+ if (err != -EINVAL) {
+ if (err)
+ return err;
+ *clr_reg = res.start;
+ }
+ }
+
+ if (field_width) {
+ u32 width;
+ err = of_property_read_u32(np, "field-width", &width);
+ if (err)
+ return err;
+ *field_width = width;
+ }
+
+ return 0;
+}
+
+static int of_sh_intc_parse_vector(struct device_node *np, uint32_t *vect)
+{
+ return of_property_read_u32(np, "vector", vect);
+}
+
+static int of_sh_intc_parse_group(struct device_node *np,
+ struct intc_group *grp)
+{
+ const __be32 *list, *list_end;
+ int size, ret = 0, count = 0;
+ phandle phandle;
+
+ /* Retrieve the phandle list property */
+ list = of_get_property(np, "group", &size);
+ if (!list)
+ return -ENOENT;
+
+ list_end = list + size / sizeof(*list);
+
+ grp->enum_id = np->phandle;
+ /* Loop over the phandles until all the requested entry is found */
+ while (list < list_end) {
+ /* If phandle is 0, then it is an empty entry with
+ no arguments. */
+ phandle = be32_to_cpup(list);
+ if (phandle)
+ grp->enum_ids[count] = phandle;
+ list++;
+ count++;
+ }
+
+ pr_debug("%d:[", grp->enum_id);
+ for (size = 0 ; size < count ; size++)
+ pr_debug(" %d ", grp->enum_ids[size]);
+
+ pr_debug("]\n");
+
+ return ret;
+}
+
+static int of_sh_intc_parse_vectortbl(struct device_node *np,
+ struct intc_vect **vect, int *tbl_size)
+{
+ const __be32 *list, *list_end;
+ int size, ret = 0, count = 0;
+ struct device_node *node = NULL;
+ phandle phandle;
+
+ /* Retrieve the phandle list property */
+ list = of_get_property(np, "vector_table", &size);
+ if (!list)
+ return -ENOENT;
+
+ *tbl_size = size / sizeof(*list);
+
+ pr_debug("vector table size: %d\n", *tbl_size);
+
+ *vect = kzalloc(sizeof(struct intc_vect) * *tbl_size,
+ GFP_KERNEL);
+ if (!*vect)
+ return -ENOMEM;
+
+ list_end = list + *tbl_size;
+
+ /* Loop over the phandles until all the requested entry is found */
+ while (list < list_end) {
+ /* If phandle is 0, then it is an empty entry with
+ no arguments. */
+ phandle = be32_to_cpup(list);
+ if (phandle) {
+ uint32_t vector_id;
+
+ (*vect)[count].enum_id = phandle;
+ node = of_find_node_by_phandle(phandle);
+
+ ret = of_sh_intc_parse_vector(node, &vector_id);
+ if (ret)
+ return ret;
+
+ (*vect)[count].vect = vector_id;
+ pr_debug("id %d : vector 0x%x\n",
+ (*vect)[count].enum_id, (*vect)[count].vect);
+ } else {
+ ret = -EINVAL;
+ goto error;
+ }
+ list++;
+ count++;
+ }
+ return ret;
+
+error:
+ kfree(*vect);
+
+ return ret;
+}
+
+static int of_sh_intc_parse_reginfo(struct device_node *np,
+ struct intc_mask_reg *mask,
+ struct intc_prio_reg *prio,
+ struct intc_sense_reg *sense)
+{
+ const __be32 *list, *list_end;
+ int size, id, ret = 0, count = 0;
+ phandle phandle;
+
+ /* Retrieve the phandle list property */
+ list = of_get_property(np, "reginfo", &size);
+ if (!list)
+ return -ENOENT;
+
+ list_end = list + size / sizeof(*list);
+
+ /* Loop over the phandles until all the requested entry is found */
+ while (list < list_end) {
+ /* If phandle is 0, then it is an empty entry with
+ no arguments. */
+ phandle = be32_to_cpup(list);
+ if (phandle)
+ id = phandle;
+ else
+ id = 0;
+
+ if (mask)
+ mask->enum_ids[count] = id;
+ if (prio)
+ prio->enum_ids[count] = id;
+ if (sense)
+ sense->enum_ids[count] = id;
+
+ pr_debug("reg: [%d] %d\n", count, id);
+ list++;
+ count++;
+ }
+
+ return ret;
+}
+
+static struct device_node *
+__init of_sh_intc_check_base_node(struct device_node *np,
+ const char *node_name, int *tbl_size)
+{
+ struct device_node *node;
+
+ node = of_find_node_by_name(np, node_name);
+ if (!node) {
+ pr_err("%s table not found\n", node_name);
+ return NULL;
+ }
+
+ pr_debug("%s\n", node->full_name);
+
+ *tbl_size = of_get_child_count(node);
+
+ pr_debug("Size of %s: %d\n", node_name, *tbl_size);
+
+ return node;
+}
+
+static int __init of_sh_intc_get_mask_ack(struct device_node *np,
+ struct intc_mask_reg **masks, int *tbl_size,
+ const char *base_name, const char *reg_name)
+{
+ struct device_node *intc_node, *reg_node;
+ int i, ret;
+ char node_name[13]; /* intc_mask + 999 */
+
+ intc_node = of_sh_intc_check_base_node(np, base_name, tbl_size);
+ if (!intc_node)
+ return -ENOENT;
+
+ *masks = kzalloc(sizeof(struct intc_mask_reg) * *tbl_size, GFP_KERNEL);
+ if (!*masks)
+ return -ENOMEM;
+
+ for (i = 0 ; i < *tbl_size; i++) {
+ memset(node_name, 0, sizeof(node_name));
+ snprintf(node_name, sizeof(node_name), "%s%d", reg_name, i);
+
+ pr_debug("intc node[%d]: name: %s\n", i, node_name);
+
+ reg_node = of_find_node_by_name(intc_node, node_name);
+ if (!reg_node) {
+ pr_warn("%s not found\n", node_name);
+ ret = -EINVAL;
+ goto error;
+ }
+
+ ret = of_sh_intc_get_reg_addrs(reg_node, &(*masks)[i].set_reg,
+ &(*masks)[i].clr_reg,
+ &(*masks)[i].reg_width, NULL);
+ if (ret)
+ goto error;
+
+#ifdef CONFIG_INTC_BALANCING
+ of_property_read_u32(reg_node, "dist_reg",
+ &(*masks)[i].dist_reg);
+#endif
+#ifdef CONFIG_SMP
+ of_property_read_u32(reg_node, "smp",
+ (u32 *)&(*masks)[i].smp);
+#endif
+
+ pr_debug("set reg: 0x%lx clr reg: 0x%lx reg_width: %ld\n",
+ (*masks)[i].set_reg, (*masks)[i].clr_reg,
+ (*masks)[i].reg_width);
+
+ ret = of_sh_intc_parse_reginfo(reg_node, &(*masks)[i], NULL,
+ NULL);
+ if (ret)
+ goto error;
+ }
+
+ return ret;
+
+error:
+ kfree(*masks);
+ return ret;
+}
+
+static int __init of_sh_intc_get_vector(struct device_node *np,
+ struct intc_vect **vectors, int *tbl_size)
+{
+ struct device_node *intc_node;
+
+ /* Get INTCA vector register info */
+ intc_node = of_find_node_by_name(np, "intc_vectors");
+ if (!intc_node) {
+ pr_err("Get INTC vector table not found\n");
+ return -ENOENT;
+ }
+
+ return of_sh_intc_parse_vectortbl(intc_node, vectors, tbl_size);
+}
+
+static int __init of_sh_intc_get_prio(struct device_node *np,
+ struct intc_prio_reg **prios, int *tbl_size)
+{
+ struct device_node *intc_node, *reg_node;
+ int i, ret;
+ char node_name[13]; /* intc_prio + 999 */
+
+ intc_node = of_sh_intc_check_base_node(np, "intc_prio_registers",
+ tbl_size);
+ if (!intc_node)
+ return -ENOENT;
+
+ *prios = kzalloc(sizeof(struct intc_prio_reg) * *tbl_size, GFP_KERNEL);
+ if (!*prios)
+ return -ENOMEM;
+
+ /* Get INTC priority register info */
+ for (i = 0 ; i < *tbl_size; i++) {
+ memset(node_name, 0, sizeof(node_name));
+ snprintf(node_name, sizeof(node_name), "intc_prio%d", i);
+
+ pr_debug("INTC node name: %s\n", node_name);
+
+ reg_node = of_find_node_by_name(intc_node, node_name);
+
+ if (!intc_node) {
+ pr_err("INTC prio register not found\n");
+ ret = -EINVAL;
+ goto error;
+ }
+
+ ret = of_sh_intc_get_reg_addrs(reg_node, &(*prios)[i].set_reg,
+ &(*prios)[i].clr_reg, &(*prios)[i].reg_width,
+ &(*prios)[i].field_width);
+ if (ret)
+ goto error;
+
+ pr_debug("\tset reg: 0x%lx clr reg: 0x%lx\n",
+ (*prios)[i].set_reg, (*prios)[i].clr_reg);
+ pr_debug("\treg_width: %ld field_width: %ld\n",
+ (*prios)[i].reg_width, (*prios)[i].field_width);
+
+ ret = of_sh_intc_parse_reginfo(reg_node, NULL, &(*prios)[i],
+ NULL);
+ if (ret)
+ goto error;
+ }
+
+ return ret;
+
+error:
+ kfree(*prios);
+ return ret;
+}
+
+static int __init of_sh_intc_get_sense(struct device_node *np,
+ struct intc_sense_reg **senses, int *tbl_size)
+{
+ struct device_node *intc_node, *reg_node;
+ int i, ret;
+ char node_name[14]; /* intc_sense + 999 */
+
+ intc_node = of_sh_intc_check_base_node(np, "intc_sense_registers",
+ tbl_size);
+ if (!intc_node)
+ return -ENOENT;
+
+ *senses = kzalloc(sizeof(struct intc_sense_reg) * *tbl_size,
+ GFP_KERNEL);
+ if (!*senses)
+ return -ENOMEM;
+
+ /* Get INTC priority register info */
+ for (i = 0 ; i < *tbl_size; i++) {
+ memset(node_name, 0, sizeof(node_name));
+ snprintf(node_name, sizeof(node_name), "intc_sense%d", i);
+
+ pr_debug("INTC node name: %s\n", node_name);
+
+ reg_node = of_find_node_by_name(intc_node, node_name);
+
+ if (!intc_node) {
+ pr_err("INTC senses register not found\n");
+ ret = -EINVAL;
+ goto error;
+ }
+
+ ret = of_sh_intc_get_reg_addrs(reg_node, &(*senses)[i].reg,
+ NULL, &(*senses)[i].reg_width,
+ &(*senses)[i].field_width);
+ if (ret)
+ goto error;
+
+ pr_debug("\tset reg: 0x%lx\n", (*senses)[i].reg);
+ pr_debug("\treg_width: %ld field_width: %ld\n",
+ (*senses)[i].reg_width,
+ (*senses)[i].field_width);
+
+ ret = of_sh_intc_parse_reginfo(reg_node, NULL, NULL,
+ &(*senses)[i]);
+ if (ret)
+ goto error;
+ }
+
+ return ret;
+
+error:
+ kfree(*senses);
+ return ret;
+}
+
+static int __init of_sh_intc_get_ack(struct device_node *np,
+ struct intc_mask_reg **masks, int *tbl_size)
+{
+ return of_sh_intc_get_mask_ack(np, masks, tbl_size,
+ "intc_ack_registers", "intc_ack");
+}
+
+static int __init of_sh_intc_get_mask(struct device_node *np,
+ struct intc_mask_reg **masks, int *tbl_size)
+{
+ return of_sh_intc_get_mask_ack(np, masks, tbl_size,
+ "intc_mask_registers", "intc_mask");
+}
+
+static int __init of_sh_intc_get_group(struct device_node *np,
+ struct intc_group **groups, int *tbl_size)
+{
+ struct device_node *node;
+ int i, ret, size;
+ const __be32 *list;
+ struct device_node *grp_node;
+ char node_name[15]; /* intc_group at 999 */
+
+ node = of_sh_intc_check_base_node(np, "intc_groups", tbl_size);
+ if (!node || !*tbl_size)
+ return -ENOENT;
+
+ *groups = kzalloc(sizeof(struct intc_group) * *tbl_size, GFP_KERNEL);
+ if (!*groups)
+ return -ENOMEM;
+
+ /* Get INTCA node info */
+ for (i = 0 ; i < *tbl_size; i++) {
+ memset(node_name, 0, sizeof(node_name));
+ snprintf(node_name, sizeof(node_name), "intc_group%d", i);
+
+ pr_debug("intc group[%d]: name: %s\n", i, node_name);
+
+ grp_node = of_find_node_by_name(np, node_name);
+ if (!grp_node) {
+ pr_warn("%s not found\n", node_name);
+ ret = -EINVAL;
+ goto error;
+ }
+
+ list = of_get_property(np, node_name, &size);
+ ret = of_sh_intc_parse_group(grp_node, &(*groups)[i]);
+ if (ret) {
+ pr_err("intc group not found\n");
+ goto error;
+ }
+ }
+
+ return ret;
+
+error:
+ kfree(*groups);
+ return ret;
+}
+
+int __init of_sh_intc_get_intevtsa_vect(struct device_node *np,
+ unsigned short *vect)
+{
+ int size;
+ const __be32 *list;
+ struct device_node *node;
+ phandle phandle;
+
+ node = of_find_node_by_name(np, "intc_intevtsa");
+ if (!node)
+ return -ENOENT;
+
+ /* Retrieve the phandle list property */
+ list = of_get_property(node, "vector", &size);
+ if (!list)
+ return -ENOENT;
+
+ phandle = be32_to_cpup(list);
+ if (phandle) {
+ uint32_t tmp;
+ struct device_node *vect_node =
+ of_find_node_by_phandle(phandle);
+
+ if (!of_sh_intc_parse_vector(vect_node, &tmp))
+ *vect = tmp;
+ else
+ return -ENOENT;
+ } else {
+ pr_debug("intc_intevtsa data not found\n");
+ return -ENOENT;
+ }
+ return 0;
+}
+
+static int of_sh_intc_get_force_flags(struct device_node *np,
+ const char *node_name)
+{
+ int size;
+ const __be32 *list = of_get_property(np, node_name, &size);
+ if (list)
+ return be32_to_cpup(list);
+
+ return 0;
+}
+
+void __init of_sh_intc_get_force_enable(struct device_node *np,
+ struct intc_desc *d)
+{
+ d->force_enable = of_sh_intc_get_force_flags(np, "force_enable");
+}
+
+void __init of_sh_intc_get_force_disable(struct device_node *np,
+ struct intc_desc *d)
+{
+ d->force_disable = of_sh_intc_get_force_flags(np, "force_disable");
+}
+
+void __init of_sh_intc_get_skip_syscore_suspend(struct device_node *np,
+ struct intc_desc *d)
+{
+ if (of_find_property(np, "skip_syscore_suspend", NULL))
+ d->skip_syscore_suspend = true;
+ else
+ d->skip_syscore_suspend = false;
+}
+
+int __init of_sh_intc_get_intc(struct device_node *np, struct intc_desc *d)
+{
+ int ret = of_sh_intc_get_vector(np, &d->hw.vectors, &d->hw.nr_vectors);
+ if (ret)
+ return ret;
+
+ ret = of_sh_intc_get_group(np, &d->hw.groups, &d->hw.nr_groups);
+ /* INTC may not need groups. */
+ if (ret && ret != -ENOENT)
+ return ret;
+
+ ret = of_sh_intc_get_mask(np, &d->hw.mask_regs, &d->hw.nr_mask_regs);
+ if (ret)
+ return ret;
+
+ ret = of_sh_intc_get_prio(np, &d->hw.prio_regs, &d->hw.nr_prio_regs);
+ if (ret)
+ return ret;
+
+ ret = of_sh_intc_get_sense(np, &d->hw.sense_regs, &d->hw.nr_sense_regs);
+ /* INTC may not need Sense register. */
+ if (ret && ret != -ENOENT)
+ return ret;
+
+ ret = of_sh_intc_get_ack(np, &d->hw.ack_regs, &d->hw.nr_ack_regs);
+ /* INTC may not need Ack register. */
+ if (ret && ret != -ENOENT)
+ return ret;
+
+ d->of_node = np;
+
+ return 0;
+}
diff --git a/include/linux/sh_intc.h b/include/linux/sh_intc.h
index 3238328..c7954ee 100644
--- a/include/linux/sh_intc.h
+++ b/include/linux/sh_intc.h
@@ -2,6 +2,10 @@
#define __SH_INTC_H
#include <linux/ioport.h>
+#include <linux/of.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+#include <linux/of_address.h>
#ifdef CONFIG_SUPERH
#define INTC_NR_IRQS 512
@@ -114,6 +118,7 @@ struct intc_desc {
intc_enum force_disable;
bool skip_syscore_suspend;
struct intc_hw_desc hw;
+ struct device_node *of_node;
};
#define DECLARE_INTC_DESC(symbol, chipname, vectors, groups, \
@@ -146,4 +151,55 @@ static inline int register_intc_userimask(unsigned long addr)
}
#endif
+/*
+ * of_sh_initc_get_intc() - Get INTC table.
+ * @np: device node to get INTC from
+ * @d: a pointer of intc table
+ *
+ * Return: one of the errno value on the error condition
+ */
+int of_sh_intc_get_intc(struct device_node *np, struct intc_desc *d);
+
+/*
+ * of_sh_intc_get_force_enable - Get and set force_enable vector in
+ * struct intc_desc.
+ * @np: device node to get INTC from
+ * @d: a pointer of struct intc_desc
+ *
+ * Return: none
+ */
+void of_sh_intc_get_force_enable(struct device_node *np,
+ struct intc_desc *d);
+
+/*
+ * of_sh_intc_get_force_disable - Get and set force_disable vector in
+ * struct intc_desc.
+ * @np: device node to get INTC from
+ * @d: a pointer of struct intc_desc
+ *
+ * Return: none
+ */
+void of_sh_intc_get_force_disable(struct device_node *np,
+ struct intc_desc *d);
+
+/*
+ * of_sh_intc_get_skip_syscore_suspend - Get and set skip_syscore_suspend
+ * flag in struct intc_desc.
+ * @np: device node to get INTC from
+ * @d: a pointer of struct intc_desc
+ *
+ * Return: none
+ */
+void of_sh_intc_get_skip_syscore_suspend(struct device_node *np,
+ struct intc_desc *d);
+
+/*
+ * of_sh_intc_get_intevtsa_vect - Get using vector by intevtsa
+ * @np: device node to get INTC from
+ * @vect:a pointer of value for vector
+ *
+ * Return: one of the errno value on the error condition
+ */
+int of_sh_intc_get_intevtsa_vect(struct device_node *np, unsigned short *vect);
+
#endif /* __SH_INTC_H */
--
1.7.10.4
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