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@xxxxxxx>
---
drivers/tty/serial/sccnxp.c | 21 +++++++++++++++------
include/linux/platform_data/serial-sccnxp.h | 4 ----
2 files changed, 15 insertions(+), 10 deletions(-)
diff --git a/drivers/tty/serial/sccnxp.c b/drivers/tty/serial/sccnxp.c
index b1d04aa..c773041 100644
--- a/drivers/tty/serial/sccnxp.c
+++ b/drivers/tty/serial/sccnxp.c
@@ -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;
}
diff --git a/include/linux/platform_data/serial-sccnxp.h b/include/linux/platform_data/serial-sccnxp.h
index 215574d..bdc510d 100644
--- a/include/linux/platform_data/serial-sccnxp.h
+++ b/include/linux/platform_data/serial-sccnxp.h
@@ -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
--
1.8.1.5
--
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