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path: root/drivers/mailbox/omap-mailbox.c
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Diffstat (limited to 'drivers/mailbox/omap-mailbox.c')
-rw-r--r--drivers/mailbox/omap-mailbox.c156
1 files changed, 132 insertions, 24 deletions
diff --git a/drivers/mailbox/omap-mailbox.c b/drivers/mailbox/omap-mailbox.c
index a27e00e63a8a..bcc7ee129276 100644
--- a/drivers/mailbox/omap-mailbox.c
+++ b/drivers/mailbox/omap-mailbox.c
@@ -31,6 +31,7 @@
#include <linux/err.h>
#include <linux/notifier.h>
#include <linux/module.h>
+#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/platform_data/mailbox-omap.h>
@@ -94,6 +95,18 @@ struct omap_mbox_device {
struct list_head elem;
};
+struct omap_mbox_fifo_info {
+ int tx_id;
+ int tx_usr;
+ int tx_irq;
+
+ int rx_id;
+ int rx_usr;
+ int rx_irq;
+
+ const char *name;
+};
+
struct omap_mbox {
const char *name;
int irq;
@@ -587,24 +600,118 @@ static int omap_mbox_unregister(struct omap_mbox_device *mdev)
return 0;
}
+static const struct of_device_id omap_mailbox_of_match[] = {
+ {
+ .compatible = "ti,omap2-mailbox",
+ .data = (void *)MBOX_INTR_CFG_TYPE1,
+ },
+ {
+ .compatible = "ti,omap3-mailbox",
+ .data = (void *)MBOX_INTR_CFG_TYPE1,
+ },
+ {
+ .compatible = "ti,omap4-mailbox",
+ .data = (void *)MBOX_INTR_CFG_TYPE2,
+ },
+ {
+ /* end */
+ },
+};
+MODULE_DEVICE_TABLE(of, omap_mailbox_of_match);
+
static int omap_mbox_probe(struct platform_device *pdev)
{
struct resource *mem;
int ret;
struct omap_mbox **list, *mbox, *mboxblk;
struct omap_mbox_pdata *pdata = pdev->dev.platform_data;
- struct omap_mbox_dev_info *info;
+ struct omap_mbox_dev_info *info = NULL;
+ struct omap_mbox_fifo_info *finfo, *finfoblk;
struct omap_mbox_device *mdev;
struct omap_mbox_fifo *fifo;
- u32 intr_type;
+ struct device_node *node = pdev->dev.of_node;
+ struct device_node *child;
+ const struct of_device_id *match;
+ u32 intr_type, info_count;
+ u32 num_users, num_fifos;
+ u32 tmp[3];
u32 l;
int i;
- if (!pdata || !pdata->info_cnt || !pdata->info) {
+ if (!node && (!pdata || !pdata->info_cnt || !pdata->info)) {
pr_err("%s: platform not supported\n", __func__);
return -ENODEV;
}
+ if (node) {
+ match = of_match_device(omap_mailbox_of_match, &pdev->dev);
+ if (!match)
+ return -ENODEV;
+ intr_type = (u32)match->data;
+
+ if (of_property_read_u32(node, "ti,mbox-num-users",
+ &num_users))
+ return -ENODEV;
+
+ if (of_property_read_u32(node, "ti,mbox-num-fifos",
+ &num_fifos))
+ return -ENODEV;
+
+ info_count = of_get_available_child_count(node);
+ if (!info_count) {
+ dev_err(&pdev->dev, "no available mbox devices found\n");
+ return -ENODEV;
+ }
+ } else { /* non-DT device creation */
+ info_count = pdata->info_cnt;
+ info = pdata->info;
+ intr_type = pdata->intr_type;
+ num_users = pdata->num_users;
+ num_fifos = pdata->num_fifos;
+ }
+
+ finfoblk = devm_kzalloc(&pdev->dev, info_count * sizeof(*finfoblk),
+ GFP_KERNEL);
+ if (!finfoblk)
+ return -ENOMEM;
+
+ finfo = finfoblk;
+ child = NULL;
+ for (i = 0; i < info_count; i++, finfo++) {
+ if (node) {
+ child = of_get_next_available_child(node, child);
+ ret = of_property_read_u32_array(child, "ti,mbox-tx",
+ tmp, ARRAY_SIZE(tmp));
+ if (ret)
+ return ret;
+ finfo->tx_id = tmp[0];
+ finfo->tx_irq = tmp[1];
+ finfo->tx_usr = tmp[2];
+
+ ret = of_property_read_u32_array(child, "ti,mbox-rx",
+ tmp, ARRAY_SIZE(tmp));
+ if (ret)
+ return ret;
+ finfo->rx_id = tmp[0];
+ finfo->rx_irq = tmp[1];
+ finfo->rx_usr = tmp[2];
+
+ finfo->name = child->name;
+ } else {
+ finfo->tx_id = info->tx_id;
+ finfo->rx_id = info->rx_id;
+ finfo->tx_usr = info->usr_id;
+ finfo->tx_irq = info->irq_id;
+ finfo->rx_usr = info->usr_id;
+ finfo->rx_irq = info->irq_id;
+ finfo->name = info->name;
+ info++;
+ }
+ if (finfo->tx_id >= num_fifos || finfo->rx_id >= num_fifos ||
+ finfo->tx_usr >= num_users || finfo->rx_usr >= num_users)
+ return -EINVAL;
+ }
+
mdev = devm_kzalloc(&pdev->dev, sizeof(*mdev), GFP_KERNEL);
if (!mdev)
return -ENOMEM;
@@ -615,41 +722,40 @@ static int omap_mbox_probe(struct platform_device *pdev)
return PTR_ERR(mdev->mbox_base);
/* allocate one extra for marking end of list */
- list = devm_kzalloc(&pdev->dev, (pdata->info_cnt + 1) * sizeof(*list),
+ list = devm_kzalloc(&pdev->dev, (info_count + 1) * sizeof(*list),
GFP_KERNEL);
if (!list)
return -ENOMEM;
- mboxblk = devm_kzalloc(&pdev->dev, pdata->info_cnt * sizeof(*mbox),
+ mboxblk = devm_kzalloc(&pdev->dev, info_count * sizeof(*mbox),
GFP_KERNEL);
if (!mboxblk)
return -ENOMEM;
- info = pdata->info;
- intr_type = pdata->intr_type;
mbox = mboxblk;
- for (i = 0; i < pdata->info_cnt; i++, info++) {
+ finfo = finfoblk;
+ for (i = 0; i < info_count; i++, finfo++) {
fifo = &mbox->tx_fifo;
- fifo->msg = MAILBOX_MESSAGE(info->tx_id);
- fifo->fifo_stat = MAILBOX_FIFOSTATUS(info->tx_id);
- fifo->intr_bit = MAILBOX_IRQ_NOTFULL(info->tx_id);
- fifo->irqenable = MAILBOX_IRQENABLE(intr_type, info->usr_id);
- fifo->irqstatus = MAILBOX_IRQSTATUS(intr_type, info->usr_id);
- fifo->irqdisable = MAILBOX_IRQDISABLE(intr_type, info->usr_id);
+ fifo->msg = MAILBOX_MESSAGE(finfo->tx_id);
+ fifo->fifo_stat = MAILBOX_FIFOSTATUS(finfo->tx_id);
+ fifo->intr_bit = MAILBOX_IRQ_NOTFULL(finfo->tx_id);
+ fifo->irqenable = MAILBOX_IRQENABLE(intr_type, finfo->tx_usr);
+ fifo->irqstatus = MAILBOX_IRQSTATUS(intr_type, finfo->tx_usr);
+ fifo->irqdisable = MAILBOX_IRQDISABLE(intr_type, finfo->tx_usr);
fifo = &mbox->rx_fifo;
- fifo->msg = MAILBOX_MESSAGE(info->rx_id);
- fifo->msg_stat = MAILBOX_MSGSTATUS(info->rx_id);
- fifo->intr_bit = MAILBOX_IRQ_NEWMSG(info->rx_id);
- fifo->irqenable = MAILBOX_IRQENABLE(intr_type, info->usr_id);
- fifo->irqstatus = MAILBOX_IRQSTATUS(intr_type, info->usr_id);
- fifo->irqdisable = MAILBOX_IRQDISABLE(intr_type, info->usr_id);
+ fifo->msg = MAILBOX_MESSAGE(finfo->rx_id);
+ fifo->msg_stat = MAILBOX_MSGSTATUS(finfo->rx_id);
+ fifo->intr_bit = MAILBOX_IRQ_NEWMSG(finfo->rx_id);
+ fifo->irqenable = MAILBOX_IRQENABLE(intr_type, finfo->rx_usr);
+ fifo->irqstatus = MAILBOX_IRQSTATUS(intr_type, finfo->rx_usr);
+ fifo->irqdisable = MAILBOX_IRQDISABLE(intr_type, finfo->rx_usr);
mbox->intr_type = intr_type;
mbox->parent = mdev;
- mbox->name = info->name;
- mbox->irq = platform_get_irq(pdev, info->irq_id);
+ mbox->name = finfo->name;
+ mbox->irq = platform_get_irq(pdev, finfo->tx_irq);
if (mbox->irq < 0)
return mbox->irq;
list[i] = mbox++;
@@ -657,8 +763,8 @@ static int omap_mbox_probe(struct platform_device *pdev)
mutex_init(&mdev->cfg_lock);
mdev->dev = &pdev->dev;
- mdev->num_users = pdata->num_users;
- mdev->num_fifos = pdata->num_fifos;
+ mdev->num_users = num_users;
+ mdev->num_fifos = num_fifos;
mdev->mboxes = list;
ret = omap_mbox_register(mdev);
if (ret)
@@ -684,6 +790,7 @@ static int omap_mbox_probe(struct platform_device *pdev)
if (ret < 0)
goto unregister;
+ devm_kfree(&pdev->dev, finfoblk);
return 0;
unregister:
@@ -708,6 +815,7 @@ static struct platform_driver omap_mbox_driver = {
.driver = {
.name = "omap-mailbox",
.owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(omap_mailbox_of_match),
},
};
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