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serial: sccnxp: Add DT support

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Add DT support to the SCCNCP serial driver.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alexander Shiyan 2013-07-31 14:55:45 +04:00 • committed by Greg Kroah-Hartman
parent ea4c39beac
commit 85c9969074
3 changed files with 93 additions and 12 deletions
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46
drivers/tty/serial/sccnxp.c
View file

@ -20,6 +20,8 @@
#include <linux/module.h>
#include <linux/device.h>
#include <linux/console.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/serial_core.h>
#include <linux/serial.h>
#include <linux/io.h>
@ -853,10 +855,25 @@ static const struct platform_device_id sccnxp_id_table[] = {
};
MODULE_DEVICE_TABLE(platform, sccnxp_id_table);
static const struct of_device_id sccnxp_dt_id_table[] = {
{ .compatible = "nxp,sc2681", .data = &sc2681, },
{ .compatible = "nxp,sc2691", .data = &sc2691, },
{ .compatible = "nxp,sc2692", .data = &sc2692, },
{ .compatible = "nxp,sc2891", .data = &sc2891, },
{ .compatible = "nxp,sc2892", .data = &sc2892, },
{ .compatible = "nxp,sc28202", .data = &sc28202, },
{ .compatible = "nxp,sc68681", .data = &sc68681, },
{ .compatible = "nxp,sc68692", .data = &sc68692, },
{ }
};
MODULE_DEVICE_TABLE(of, sccnxp_dt_id_table);
static int sccnxp_probe(struct platform_device *pdev)
{
struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
struct sccnxp_pdata *pdata = dev_get_platdata(&pdev->dev);
const struct of_device_id *of_id =
of_match_device(sccnxp_dt_id_table, &pdev->dev);
int i, ret, uartclk;
struct sccnxp_port *s;
void __iomem *membase;
@ -875,7 +892,22 @@ static int sccnxp_probe(struct platform_device *pdev)
spin_lock_init(&s->lock);
s->chip = (struct sccnxp_chip *)pdev->id_entry->driver_data;
if (of_id) {
s->chip = (struct sccnxp_chip *)of_id->data;
of_property_read_u32(pdev->dev.of_node, "poll-interval",
&s->pdata.poll_time_us);
of_property_read_u32(pdev->dev.of_node, "reg-shift",
&s->pdata.reg_shift);
of_property_read_u32_array(pdev->dev.of_node,
"nxp,sccnxp-io-cfg",
s->pdata.mctrl_cfg, s->chip->nr);
} else {
s->chip = (struct sccnxp_chip *)pdev->id_entry->driver_data;
if (pdata)
memcpy(&s->pdata, pdata, sizeof(struct sccnxp_pdata));
}
s->regulator = devm_regulator_get(&pdev->dev, "vcc");
if (!IS_ERR(s->regulator)) {
@ -906,16 +938,11 @@ static int sccnxp_probe(struct platform_device *pdev)
goto err_out;
}
if (pdata)
memcpy(&s->pdata, pdata, sizeof(struct sccnxp_pdata));
if (s->pdata.poll_time_us) {
dev_info(&pdev->dev, "Using poll mode, resolution %u usecs\n",
s->pdata.poll_time_us);
s->poll = 1;
}
if (!s->poll) {
} else {
s->irq = platform_get_irq(pdev, 0);
if (s->irq < 0) {
dev_err(&pdev->dev, "Missing irq resource data\n");
@ -1016,8 +1043,9 @@ static int sccnxp_remove(struct platform_device *pdev)
static struct platform_driver sccnxp_uart_driver = {
.driver = {
.name = SCCNXP_NAME,
.owner = THIS_MODULE,
.name = SCCNXP_NAME,
.owner = THIS_MODULE,
.of_match_table = sccnxp_dt_id_table,
},
.probe = sccnxp_probe,
.remove = sccnxp_remove,