mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-29 10:08:59 +00:00
113 lines
3.4 KiB
Diff
113 lines
3.4 KiB
Diff
From 36301913195582a2398add6d60477be534d4f603 Mon Sep 17 00:00:00 2001
|
|
From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
|
|
Date: Fri, 26 Jun 2015 14:19:30 +0200
|
|
Subject: [PATCH 111/121] mailbox: bcm2835: Support ARCH_BCM270x
|
|
MIME-Version: 1.0
|
|
Content-Type: text/plain; charset=UTF-8
|
|
Content-Transfer-Encoding: 8bit
|
|
|
|
Make it possible to use bcm2835-mailbox without Device Tree.
|
|
Load driver early because of lacking support for deferred probing
|
|
in many drivers.
|
|
|
|
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
|
|
---
|
|
drivers/mailbox/Kconfig | 2 +-
|
|
drivers/mailbox/bcm2835-mailbox.c | 18 ++++++++++++++++--
|
|
drivers/mailbox/mailbox.c | 13 ++++++++++++-
|
|
3 files changed, 29 insertions(+), 4 deletions(-)
|
|
|
|
--- a/drivers/mailbox/Kconfig
|
|
+++ b/drivers/mailbox/Kconfig
|
|
@@ -69,7 +69,7 @@ config ALTERA_MBOX
|
|
|
|
config BCM2835_MBOX
|
|
tristate "BCM2835 Mailbox"
|
|
- depends on ARCH_BCM2835
|
|
+ depends on ARCH_BCM2835 || ARCH_BCM2708 || ARCH_BCM2709
|
|
help
|
|
An implementation of the BCM2385 Mailbox. It is used to invoke
|
|
the services of the Videocore. Say Y here if you want to use the
|
|
--- a/drivers/mailbox/bcm2835-mailbox.c
|
|
+++ b/drivers/mailbox/bcm2835-mailbox.c
|
|
@@ -51,12 +51,15 @@
|
|
#define MAIL1_WRT (ARM_0_MAIL1 + 0x00)
|
|
#define MAIL1_STA (ARM_0_MAIL1 + 0x18)
|
|
|
|
+/* On ARCH_BCM270x these come through <linux/interrupt.h> (arm_control.h ) */
|
|
+#ifndef ARM_MS_FULL
|
|
/* Status register: FIFO state. */
|
|
#define ARM_MS_FULL BIT(31)
|
|
#define ARM_MS_EMPTY BIT(30)
|
|
|
|
/* Configuration register: Enable interrupts. */
|
|
#define ARM_MC_IHAVEDATAIRQEN BIT(0)
|
|
+#endif
|
|
|
|
struct bcm2835_mbox {
|
|
void __iomem *regs;
|
|
@@ -151,7 +154,7 @@ static int bcm2835_mbox_probe(struct pla
|
|
return -ENOMEM;
|
|
spin_lock_init(&mbox->lock);
|
|
|
|
- ret = devm_request_irq(dev, irq_of_parse_and_map(dev->of_node, 0),
|
|
+ ret = devm_request_irq(dev, platform_get_irq(pdev, 0),
|
|
bcm2835_mbox_irq, 0, dev_name(dev), mbox);
|
|
if (ret) {
|
|
dev_err(dev, "Failed to register a mailbox IRQ handler: %d\n",
|
|
@@ -210,7 +213,18 @@ static struct platform_driver bcm2835_mb
|
|
.probe = bcm2835_mbox_probe,
|
|
.remove = bcm2835_mbox_remove,
|
|
};
|
|
-module_platform_driver(bcm2835_mbox_driver);
|
|
+
|
|
+static int __init bcm2835_mbox_init(void)
|
|
+{
|
|
+ return platform_driver_register(&bcm2835_mbox_driver);
|
|
+}
|
|
+arch_initcall(bcm2835_mbox_init);
|
|
+
|
|
+static void __init bcm2835_mbox_exit(void)
|
|
+{
|
|
+ platform_driver_unregister(&bcm2835_mbox_driver);
|
|
+}
|
|
+module_exit(bcm2835_mbox_exit);
|
|
|
|
MODULE_AUTHOR("Lubomir Rintel <lkundrak@v3.sk>");
|
|
MODULE_DESCRIPTION("BCM2835 mailbox IPC driver");
|
|
--- a/drivers/mailbox/mailbox.c
|
|
+++ b/drivers/mailbox/mailbox.c
|
|
@@ -304,13 +304,23 @@ struct mbox_chan *mbox_request_channel(s
|
|
unsigned long flags;
|
|
int ret;
|
|
|
|
- if (!dev || !dev->of_node) {
|
|
+ if (!dev) {
|
|
pr_debug("%s: No owner device node\n", __func__);
|
|
return ERR_PTR(-ENODEV);
|
|
}
|
|
|
|
mutex_lock(&con_mutex);
|
|
|
|
+ if (!dev->of_node) {
|
|
+ chan = NULL;
|
|
+ /* pick the first controller in the list */
|
|
+ list_for_each_entry(mbox, &mbox_cons, node) {
|
|
+ chan = &mbox->chans[0];
|
|
+ break;
|
|
+ }
|
|
+ goto skip_dt;
|
|
+ }
|
|
+
|
|
if (of_parse_phandle_with_args(dev->of_node, "mboxes",
|
|
"#mbox-cells", index, &spec)) {
|
|
dev_dbg(dev, "%s: can't parse \"mboxes\" property\n", __func__);
|
|
@@ -327,6 +337,7 @@ struct mbox_chan *mbox_request_channel(s
|
|
|
|
of_node_put(spec.np);
|
|
|
|
+skip_dt:
|
|
if (!chan || chan->cl || !try_module_get(mbox->dev->driver->owner)) {
|
|
dev_dbg(dev, "%s: mailbox not free\n", __func__);
|
|
mutex_unlock(&con_mutex);
|