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mailbox/omap: use of_device_get_match_data() to get match data 

The OMAP Mailbox driver is directly using an integer value as
match data for distinguishing the interrupt register layout
between OMAP2 and OMAP4+ SoCs. Introduce a dedicated structure
for storing this match data, and simplify the probe function by
using the of_device_get_match_data() function. This allows the
driver to scale for 64-bit platforms by eliminating the unnecessary
type-casting between a u32 and a void pointer types.

Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
This commit is contained in:
Suman Anna 2018-07-11 18:42:12 -05:00 committed by Jassi Brar
parent 2ad5157650
commit ea2ec1e80f
1 changed files with 14 additions and 7 deletions
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21
drivers/mailbox/omap-mailbox.c
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@ -69,6 +69,10 @@ struct omap_mbox_queue {
bool full;
};
struct omap_mbox_match_data {
u32 intr_type;
};
struct omap_mbox_device {
struct device *dev;
struct mutex cfg_lock;
@ -638,18 +642,21 @@ static const struct dev_pm_ops omap_mbox_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(omap_mbox_suspend, omap_mbox_resume)
};
static const struct omap_mbox_match_data omap2_data = { MBOX_INTR_CFG_TYPE1 };
static const struct omap_mbox_match_data omap4_data = { MBOX_INTR_CFG_TYPE2 };
static const struct of_device_id omap_mailbox_of_match[] = {
{
.compatible = "ti,omap2-mailbox",
.data = (void *)MBOX_INTR_CFG_TYPE1,
.data = &omap2_data,
},
{
.compatible = "ti,omap3-mailbox",
.data = (void *)MBOX_INTR_CFG_TYPE1,
.data = &omap2_data,
},
{
.compatible = "ti,omap4-mailbox",
.data = (void *)MBOX_INTR_CFG_TYPE2,
.data = &omap4_data,
},
{
/* end */
@ -692,7 +699,7 @@ static int omap_mbox_probe(struct platform_device *pdev)
struct omap_mbox_fifo *fifo;
struct device_node *node = pdev->dev.of_node;
struct device_node *child;
const struct of_device_id *match;
const struct omap_mbox_match_data *match_data;
u32 intr_type, info_count;
u32 num_users, num_fifos;
u32 tmp[3];
@ -704,10 +711,10 @@ static int omap_mbox_probe(struct platform_device *pdev)
return -ENODEV;
}
match = of_match_device(omap_mailbox_of_match, &pdev->dev);
if (!match)
match_data = of_device_get_match_data(&pdev->dev);
if (!match_data)
return -ENODEV;
intr_type = (u32)match->data;
intr_type = match_data->intr_type;
if (of_property_read_u32(node, "ti,mbox-num-users", &num_users))
return -ENODEV;