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serial: sccnxp: Replace pdata.init/exit with regulator API

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Typical usage of pdata.init/exit is enable/disable power and/or toggle
reset for the target chip.
This patch replaces these callbacks with regulator API.

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 2013-04-13 08:46:58 +04:00 committed by Greg Kroah-Hartman
parent 289b8dd695
commit 31815c08fc
2 changed files with 15 additions and 10 deletions
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21
drivers/tty/serial/sccnxp.c
View File

@ -27,6 +27,7 @@
#include <linux/spinlock.h>
#include <linux/platform_device.h>
#include <linux/platform_data/serial-sccnxp.h>
#include <linux/regulator/consumer.h>
#define SCCNXP_NAME "uart-sccnxp"
#define SCCNXP_MAJOR 204
@ -131,6 +132,8 @@ struct sccnxp_port {
struct timer_list timer;
struct sccnxp_pdata pdata;
struct regulator *regulator;
};
static inline u8 sccnxp_raw_read(void __iomem *base, u8 reg, u8 shift)
@ -916,6 +919,16 @@ static int sccnxp_probe(struct platform_device *pdev)
goto err_out;
}
s->regulator = devm_regulator_get(&pdev->dev, "VCC");
if (!IS_ERR(s->regulator)) {
ret = regulator_enable(s->regulator);
if (ret) {
dev_err(&pdev->dev,
"Failed to enable regulator: %i\n", ret);
return ret;
}
}
membase = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(membase)) {
ret = PTR_ERR(membase);
@ -965,10 +978,6 @@ static int sccnxp_probe(struct platform_device *pdev)
s->imr = 0;
sccnxp_write(&s->port[0], SCCNXP_IMR_REG, 0);
/* Board specific configure */
if (s->pdata.init)
s->pdata.init();
if (!s->poll) {
ret = devm_request_threaded_irq(&pdev->dev, s->irq, NULL,
sccnxp_ist,
@ -1009,8 +1018,8 @@ static int sccnxp_remove(struct platform_device *pdev)
uart_unregister_driver(&s->uart);
platform_set_drvdata(pdev, NULL);
if (s->pdata.exit)
s->pdata.exit();
if (!IS_ERR(s->regulator))
return regulator_disable(s->regulator);
return 0;
}

4
include/linux/platform_data/serial-sccnxp.h
View File

@ -86,10 +86,6 @@ struct sccnxp_pdata {
const u32 mctrl_cfg[SCCNXP_MAX_UARTS];
/* Timer value for polling mode (usecs) */
const unsigned int poll_time_us;
/* Called during startup */
void (*init)(void);
/* Called before finish */
void (*exit)(void);
};
#endif