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authorThomas Gleixner <tglx@linutronix.de>2018-08-06 12:45:42 +0200
committerThomas Gleixner <tglx@linutronix.de>2018-08-06 12:45:42 +0200
commit9e90c7985229430428dc9ba0ec7fe422901b456d (patch)
treecae2072feba8cc433a32d96568bbcf36070bd6e5 /drivers/input/rmi4/rmi_driver.c
parentgenirq/irqchip: Remove MULTI_IRQ_HANDLER as it's now obselete (diff)
parentirqchip/gic-v3-its: Make its_lock a raw_spin_lock_t (diff)
downloadlinux-9e90c7985229430428dc9ba0ec7fe422901b456d.tar.xz
linux-9e90c7985229430428dc9ba0ec7fe422901b456d.zip
Merge tag 'irqchip-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core
Pull irqchip updates from Marc Zyngier: - GICv3 ITS LPI allocation revamp - GICv3 support for hypervisor-enforced LPI range - GICv3 ITS conversion to raw spinlock
Diffstat (limited to 'drivers/input/rmi4/rmi_driver.c')
-rw-r--r--drivers/input/rmi4/rmi_driver.c52
1 files changed, 20 insertions, 32 deletions
diff --git a/drivers/input/rmi4/rmi_driver.c b/drivers/input/rmi4/rmi_driver.c
index 7d29053dfb0f..fc3ab93b7aea 100644
--- a/drivers/input/rmi4/rmi_driver.c
+++ b/drivers/input/rmi4/rmi_driver.c
@@ -21,6 +21,7 @@
#include <linux/pm.h>
#include <linux/slab.h>
#include <linux/of.h>
+#include <linux/irqdomain.h>
#include <uapi/linux/input.h>
#include <linux/rmi.h>
#include "rmi_bus.h"
@@ -127,28 +128,11 @@ static int rmi_driver_process_config_requests(struct rmi_device *rmi_dev)
return 0;
}
-static void process_one_interrupt(struct rmi_driver_data *data,
- struct rmi_function *fn)
-{
- struct rmi_function_handler *fh;
-
- if (!fn || !fn->dev.driver)
- return;
-
- fh = to_rmi_function_handler(fn->dev.driver);
- if (fh->attention) {
- bitmap_and(data->fn_irq_bits, data->irq_status, fn->irq_mask,
- data->irq_count);
- if (!bitmap_empty(data->fn_irq_bits, data->irq_count))
- fh->attention(fn, data->fn_irq_bits);
- }
-}
-
static int rmi_process_interrupt_requests(struct rmi_device *rmi_dev)
{
struct rmi_driver_data *data = dev_get_drvdata(&rmi_dev->dev);
struct device *dev = &rmi_dev->dev;
- struct rmi_function *entry;
+ int i;
int error;
if (!data)
@@ -173,16 +157,8 @@ static int rmi_process_interrupt_requests(struct rmi_device *rmi_dev)
*/
mutex_unlock(&data->irq_mutex);
- /*
- * It would be nice to be able to use irq_chip to handle these
- * nested IRQs. Unfortunately, most of the current customers for
- * this driver are using older kernels (3.0.x) that don't support
- * the features required for that. Once they've shifted to more
- * recent kernels (say, 3.3 and higher), this should be switched to
- * use irq_chip.
- */
- list_for_each_entry(entry, &data->function_list, node)
- process_one_interrupt(data, entry);
+ for_each_set_bit(i, data->irq_status, data->irq_count)
+ handle_nested_irq(irq_find_mapping(data->irqdomain, i));
if (data->input)
input_sync(data->input);
@@ -1001,9 +977,13 @@ EXPORT_SYMBOL_GPL(rmi_driver_resume);
static int rmi_driver_remove(struct device *dev)
{
struct rmi_device *rmi_dev = to_rmi_device(dev);
+ struct rmi_driver_data *data = dev_get_drvdata(&rmi_dev->dev);
rmi_disable_irq(rmi_dev, false);
+ irq_domain_remove(data->irqdomain);
+ data->irqdomain = NULL;
+
rmi_f34_remove_sysfs(rmi_dev);
rmi_free_function_list(rmi_dev);
@@ -1035,7 +1015,8 @@ int rmi_probe_interrupts(struct rmi_driver_data *data)
{
struct rmi_device *rmi_dev = data->rmi_dev;
struct device *dev = &rmi_dev->dev;
- int irq_count;
+ struct fwnode_handle *fwnode = rmi_dev->xport->dev->fwnode;
+ int irq_count = 0;
size_t size;
int retval;
@@ -1046,7 +1027,6 @@ int rmi_probe_interrupts(struct rmi_driver_data *data)
* being accessed.
*/
rmi_dbg(RMI_DEBUG_CORE, dev, "%s: Counting IRQs.\n", __func__);
- irq_count = 0;
data->bootloader_mode = false;
retval = rmi_scan_pdt(rmi_dev, &irq_count, rmi_count_irqs);
@@ -1058,6 +1038,15 @@ int rmi_probe_interrupts(struct rmi_driver_data *data)
if (data->bootloader_mode)
dev_warn(dev, "Device in bootloader mode.\n");
+ /* Allocate and register a linear revmap irq_domain */
+ data->irqdomain = irq_domain_create_linear(fwnode, irq_count,
+ &irq_domain_simple_ops,
+ data);
+ if (!data->irqdomain) {
+ dev_err(&rmi_dev->dev, "Failed to create IRQ domain\n");
+ return -ENOMEM;
+ }
+
data->irq_count = irq_count;
data->num_of_irq_regs = (data->irq_count + 7) / 8;
@@ -1080,10 +1069,9 @@ int rmi_init_functions(struct rmi_driver_data *data)
{
struct rmi_device *rmi_dev = data->rmi_dev;
struct device *dev = &rmi_dev->dev;
- int irq_count;
+ int irq_count = 0;
int retval;
- irq_count = 0;
rmi_dbg(RMI_DEBUG_CORE, dev, "%s: Creating functions.\n", __func__);
retval = rmi_scan_pdt(rmi_dev, &irq_count, rmi_create_function);
if (retval < 0) {